| A mould-set for a quad stayer machine of rigid box, which is used for forming a deployment paper as an inside paper having a housing space part by bending four side edges of the deployment paper using the quad stayer machine, comprising: a first to fourth bending moulds, the bending moulds are arranged on each corner of four sides of a rectangular shape, size of the rectangular shape can be adjusted variably by enlarging/decreasing distances between the bending moulds, and the bending moulds can press the corners of the housing space of the deployment papers; a first moving shaft, both tip ends of which are inserted into the first and second bending moulds to enlarge or decrease a relative distance between the first and second bending mould; a second moving shaft, both tip ends of which are inserted into the third and fourth bending moulds to enlarge or decrease a relative distance between the third and fourth bending moulds; a third moving shaft, both tip ends of which are inserted into the second and third bending moulds to enlarge or decrease a relative distance between the second and third bending moulds; a fourth moving shaft, both tip ends of which are inserted into the first and fourth bending moulds to enlarge or decrease a relative distance between the first and fourth bending moulds; a plurality of first moving blocks assembled through vertically to respective central part of the first and second moving shafts; a plurality of second moving blocks assembled through vertically to respective central part of the third and fourth moving shafts; a first adjustment shaft, which is assembled through to the respective upper end of the first moving block, both tip ends of which are placed orthogonally to the first and second moving shafts, and which adjusts relative distances between the first and fourth bending moulds and between the second and third bending moulds simultaneously by sliding the first moving block; a first support shaft, which is assembled through to the respective lower end of the first moving block, both tip ends of which are placed orthogonally to the first and second moving shafts; a second adjustment shaft, which is assembled through to the respective upper end of the second moving block, both tip ends of which are placed orthogonal to the third and fourth moving shafts, and which adjusts relative distances between the first and second bending moulds and between the third and fourth bending moulds simultaneously by sliding the second moving block; a second support shaft, which is assembled through to the respective lower end of the second moving block, both tip ends of which are placed orthogonally to the third and fourth moving shafts; and a support column block which is provided vertically on central intersection of the first and second adjustment shafts and the first and second support shafts, and which is assembled to the quad stayer machine. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 1, wherein the first to fourth bending moulds are made with a metal plate bent as a form of "L", respectively, for bending easily the edges of the housing space part of the deployment paper, wherein a upper fastening arm and lower fastening arm are formed integrally which are protruded orthogonally from both inner sides of respective bending moulds and each protruded tip ends of which are stacked up and down, and wherein a first and a second insertion holes are formed on vertical surfaces of the tip ends of the upper and lower fastening arms through which an insertion connection and insertion depth of tip ends of the first to fourth moving shafts to the first to fourth bending moulds can be adjusted. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 1, wherein the support column block includes a support column member through which the first and second adjustment shafts and the first and second support shafts are inserted and connected, and a bracket in a plate form tightly assembled to a bottom surface of a press unit of the quad stayer machine, wherein a plurality of third through holes into which the first adjustment shaft and the first support shaft are inserted are formed on the upper and lower ends of one side of the support column member, and wherein a plurality of fourth through holes into which the second adjustment shaft and the second support shaft are inserted orthogonally to the first adjustment shaft and the first support shaft are formed on the upper and lower ends of the other side of the support column. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 1, wherein moving prevention grooves in semi-arc shapes are formed surroundingly on outer peripheral surfaces on the middle parts of the first and second adjustment shafts, and wherein right-handed screw and left-handed screw threads are formed from the moving prevention grooves to tip ends of the first and second adjustment shafts. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 1, wherein rack screw threads are formed continuously along predetermined ranges of outer peripheral surfaces of the first and second adjustment bolts, wherein through holes are formed on the respective surface of the first and second moving blocks across a predetermined range of the respective upper part of the first and second adjustment shafts, and wherein pinion bolts are inserted into the through holes and geared with the rack screw threads. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 1, wherein grooves bent inwardly from the bottoms of the first and second moving blocks are formed thereon respectively, and wherein locking blocks fitted into the grooves are provided to press the outer part peripheral surfaces of the first and second support shafts for stopping and controlling the first to fourth bending moulds. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 1, wherein enlargement plates are further adhered to the respective outer surface of the first to fourth bending moulds to form additional enlargement size from a maximum distance between the respective first to fourth bending mould. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 3, wherein a bearing bolt is provided on outer surface of one side of the support column member, which is inserted into a moving prevention grooves formed inwardly surrounding the outer surface of the central part of the first and second adjustment shafts. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 4, wherein wrench grooves are formed on vertical surfaces of one side of the first and second adjustment shafts so that a separate tool is fitted thereinto and then is rotated in a clockwise/counter clockwise to move the first and second moving blocks using the right and left threads. |
| The mould-set for a quad stayer machine of rigid box accordng to claim 6, wherein shaft pressing holes having the same diameter as the first and second support shafts inserted into the lower ends of the first and second moving blocks are formed one side of the locking block, wherein gaps are formed from the shaft pressing holes to the outer surface of the locking block, and wherein tightening bolts are joined to the gaps to decrease diameter of the shaft pressing holes. |
The present invention relates to a mould-set for a quad stayer machine of rigid box, and more particularly, to a mould-set for a quad stayer machine in which adjustments of the mould-set front ward, rear ward, left, right, and in width for pressing edges of the housing space part and bending four sides edges are performed so that a bending process of the four side edges for various deployment paper having various sizes is performed promptly and precisely.
Generally, a wrapping paper box (hereinafter, referred to as "rigid box") refers to a kind of carton box naming all containers made with paper wherein it refers to a pasteboard fabric box formed by bonding outer paper (front paper) enclosing outer faces of inside paper (board paper).
Referring to the wrapping paper box, the contents therein is safely protected through rigid inside paper while a printing effect of the wrapping paper box faces with the outer paper is maximized, and the wrapping paper box typically has been used to package medicines, cosmetic products, cameras or highly level quality of printing papers, etc., which are probably damaged.
In an early time of fabrication the wrapping paper box, a box is mainly made with a yellow board paper of 200-600 g/m 2 and then an art paper is bonded thereover with a boding agent; however, recently for fabricating the wrapping paper box a various processed board papers has been adopted to have a printability, moisture resistance, and fat resistance, etc.
Meanwhile, before a bonding process of outer papers, a forming process first is performed with inside paper such that four side edges of previously processed deployment papers to be met a box size requested by a customer are vertically bent and assembled and bonded to form a housing space. For this purpose, a quad stayer machine using a press construction method has been used.
Fig. 1 is a front view illustrating schematically an overall configuration of a quad stayer machine for a package box, and Fig. 2 is a perspective view illustrating a conventional wooden pattern for bending edges of a package box, and Fig. 3 is a view illustrating procedures of folding deployment paper for a package box.
As shown in Fig. 1, the conventional quad stayer machine 900 includes a main body 910 provided with a control box 911 for operating the machine with external power source and controlling process procedures, a bending means 920 having a pressing unit 921 and a lifting shaft 922 provided over the main body 911 for pressing a housing space part p-1 of the previously supplied deployment paper p through a repeated lifting operation thereof and bending vertically four edges of the deployment paper, a supplying means having a plurality of paper supplying rolls 931 for stacking a large amount of the deployment paper p and supplying the lowest individual paper among the large amount stacked deployment paper p to the power part of the bending means 920, a tape roll 940 wound with adhesive tapes in a rolling manner for being used to bond each adjoined edge of the four side edges bent vertically by the bending means 920, and a conveyor 950 for receiving the inside paper (deployment paper) in a shape of a box, which is dropped down after finishing a bending process and a bonding process through the bending means 920 and the tape roll 940, respectively, and conveying it to a subsequent process such as a process of adhering outer paper to a outer face thereof.
Additionally, a side supporter 960 for supporting and placing the deployment paper p on the lower part of the bending means 920 in an air floating manner when the deployment paper p is supplied using the paper supplying rolls 931, and a bending piece 970 for bending vertically the four side edges of the deployment paper p which are pressured by being connected vertically from the side supporter 960 to the conveyor 950 are further provided.
Furthermore, a wooden pattern A-1 as a mould-set is further provided on the bending means 920, which is connected integrally to the lower end of the pressing unit 921 and through which the edges of the housing space part p-1 except for the four side edges of the deployment paper p are pressed when the deployment paper is dropped downward to bend vertically the four side edges.
According to the conventional quad stayer machine 900, with an operation of the machine through a control of the control box 911, the lowest deployment paper among a large amount of deployment paper p loaded on the supplying means 930 is supplied individually and the individual deployment paper p supplied in aforementioned manner is displaced adjacently on the lower part of the bending means 920 in an air floating manner through the side supporter 960.
Subsequently, when the lift shaft 922 of the bending means 920 is moved downward through a separate operation device (not shown), the press unit 921 and the wooden pattern A-1 are lowered together to compress the upper surface of the deployment paper p.
As a result, as shown in Fig. 3, the four side edges which are not affected by the wooden pattern A-1 are bent vertically by the bending piece 970 and then the outer face of each edge is surrounded adhered by a adhesive tape of a predetermined length to complete a rigid inside paper (deployment paper) formation as a box configuration.
Finally, as a result of performing repeatedly a supplying process of the deployment paper p, a bending process of the four side edges and a bonding process, the inside paper configured as a box form is dropped on one upper end of the conveyor 950 and then is conveyed to a subsequent process for adhering outer paper along the inside paper.
However, since a size of the aforementioned package box is limited to the housing space part p-1 for products and the sizes of the package boxes are different individually depending on each customer of requesting a production and a supplement of the package boxes, it is impossible to bend various kinds of the four side edges of the deployment paper p using only the wooden pattern A-1.
Accordingly, the wooden pattern A-1 has to be fabricated separately in order to meet the size requirements of the package box whenever the customer requests to produce and further whenever the woolen patterns A-1 are fabricated differently, the wooden pattern A-1 has to be replaced and connected to the pressing unit 921 for assembling thereto, causing inconvenience.
As a result, a company for manufacturing a package box, a industrial field of which considers to be 3D (meaning Difficulty, Dirty and Dangerous), can not shorten a manufacturing period of products, which is imposed as most prior target on it, and save manufacturing cost increased with incidental expenses which are necessary in a manufacturing process, causing poor profit.
Additionally, when the wooden patterns A-1 additionally fabricated whenever the sizes of the package boxes are different as aforementioned has to be stored for reusing in a later bending process of the deployment paper p of same size, and thus a separate space for storing the wooden pattern has to be prepared, which needs additional space for increased stored volume narrows a working place, leading manufacturing environment to be deteriorated.
The present invention has been proposed to solve the above drawbacks, and the object of the present invention is to provide a mould-set for bending the edges of a package box, which is configured to include a plurality of "L" letter type-bending moulds variable in positions of enlargement/decrease from four side edges using the adjustment shafts, support shafts, and a plurality of moving shafts so that four side edges of various deployment paper having various sizes is bent vertically promptly and precisely.
To achieve the above object of the present invention, A mould-set for a quad stayer machine of rigid box, which is used for forming a deployment paper as an inside paper having a housing space part by bending four side edges of the deployment paper using the quad stayer machine, comprising: a first to fourth bending moulds, the bending moulds are arranged on each corner of four sides of a rectangular shape, size of the rectangular shape can be adjusted variably by enlarging/decreasing distances between the bending moulds, and the bending moulds can press the corners of the housing space of the deployment papers; a first moving shaft, both tip ends of which are inserted into the first and second bending moulds to enlarge or decrease a relative distance between the first and second bending mould; a second moving shaft, both tip ends of which are inserted into the third and fourth bending moulds to enlarge or decrease a relative distance between the third and fourth bending moulds; a third moving shaft, both tip ends of which are inserted into the second and third bending moulds to enlarge or decrease a relative distance between the second and third bending moulds; a fourth moving shaft, both tip ends of which are inserted into the first and fourth bending moulds to enlarge or decrease a relative distance between the first and fourth bending moulds; a plurality of first moving blocks assembled through vertically to respective central part of the first and second moving shafts; a plurality of second moving blocks assembled through vertically to respective central part of the third and fourth moving shafts; a first adjustment shaft, which is assembled through to the respective upper end of the first moving block, both tip ends of which are placed orthogonally to the first and second moving shafts, and which adjusts relative distances between the first and fourth bending moulds and between the second and third bending moulds simultaneously by sliding the first moving block; a first support shaft, which is assembled through to the respective lower end of the first moving block, both tip ends of which are placed orthogonally to the first and second moving shafts; a second adjustment shaft, which is assembled through to the respective upper end of the second moving block, both tip ends of which are placed orthogonal to the third and fourth moving shafts, and which adjusts relative distances between the first and second bending moulds and between the third and fourth bending moulds simultaneously by sliding the second moving block; a second support shaft, which is assembled through to the respective lower end of the second moving block, both tip ends of which are placed orthogonally to the third and fourth moving shafts; and a support column block which is provided vertically on central intersection of the first and second adjustment shafts and the first and second support shafts, and which is assembled to the quad stayer machine.
It is clear as aforementioned, the mould-set for bending the edges of a package box has advantageous effects such that the respective mould of the plurality of the first to fourth bending moulds arranged on four edges thereof to form a rectangular shape is spaced or is adjacent by the first and second adjustment shafts and the first to fourth moving shafts to vary a total area of the mould-set so that even a case of various deployment papers having various sizes only the edges of the corresponding housing space part is pressed to perform promptly and precisely.
Additionally, the mould-set the total area of which can be varied is provided so that a wooden patter as a conventional mould-set which needs to be fabricated separately at every times according to the sizes of the deployment papers can be omitted and further difficulties caused from separation of the wooden pattern from a quad stayer machine and replacement of defect components can be decreased. Meanwhile, additional expense necessary for fabricating wooden pattern and working time can be decreased and a storage space for reusing the wooden patter is not necessary to save cost.
Further objects and advantages of the invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings in which:
Fig. 1 is a front view illustrating schematically an overall configuration of a quad stayer mochine of rigid box;
Fig. 2 is a perspective view illustrating a conventional wooden pattern of a quad stayer machine of rigid box;
Fig. 3 is a view illustrating procedures of folding deployment paper for a rigid box;
Fig. 4 is a perspective view illustrating an overall configuration of the mould-set for a quad stayer machine of rigid box according to the present invention;
Fig. 5 is an exploded perspective view illustrating a fabrication relation of the mould-set for a quad stayer machine of rigid box according to the present invention;
Fig. 6 and 7 are plain views illustrating an operational relation of the mould-set for for a quad stayer machine of rigid box according to the present invention;
Fig. 8 is a view illustrating an application example of the mould-set for a quad stayer machine of rigid box according to the present invention;
Fig. 9 is a perspective view illustrating the mould-set for for a quad stayer machine of rigid box according to another embodiment of the present invention; and
Fig. 10 is exploded perspective view illustrating a bending mould of the mould-set for for a quad stayer machine of rigid box according to the present invention.
The preferred embodiments of the present invention will be hereafter described in detail with reference to the accompanying drawings.
Among the accompanying drawings, Fig. 4 is a perspective view illustrating an overall configuration of the mould-set for a quad stayer machine of rigid box according to the present invention, Fig. 5 is an exploded perspective view illustrating a fabrication relation of the mould-set for a quad stayer machine of rigid box according to the present invention. Fig. 6 and 7 are plain views illustrating an operational relation of the mould-set for a quad stayer machine of rigid box according to the present invention, Fig. 8 is a view illustrating an application example of the mould-set for a quad stayer machine of rigid box according to the present invention, Fig. 9 is a perspective view illustrating the mould-set for a quad stayer machine of rigid box according to another embodiment of the present invention, and Fig. 10 is exploded perspective view illustrating a bending mould of the mould-set for a quad stayer machine of rigid box according to the present invention.
As shown in Figs. 4 and 5, the mould-set A for a quad stayer machine of rigid box according to the present invention includes a plurality of first to fourth bending moulds 1, 1-1, 1-2, 1-3, which are arranged on each four corners of the mould-set to form a rectangular shape and a distance between the bending moulds in an arrangement state is variable such as being enlarged or reduced, and thus a size adjustment of the arrangement is possible to press only the corners of a housing space part p-1 of a various kinds of deployment paper p in different sizes.
The bending moulds 1, 1-1, 1-2, 1-3 are made with metal plates bent as "L" character to press easily the edges of the housing space part p-1 of the deployment paper p, and further include an upper fastening arm 11 and a lower fastening arm 12, which are protruded orthogonally from both inner sides of respective bending moulds 1, 1-1, 1-2, 1-3 and each protruded tip end thereof is stacked up and down, and formed integrally.
Additionally, a first and a second insertion holes 11a, 12a passing through an outer surface of the moulds are formed on vertical surfaces of the tip ends of the upper and lower fastening arms 11, 12, respectively, through which an insertion connection of tip ends of a first to fourth moving shafts later to be described and depths thereof can be adjusted.
Here, a first shaft 2 is provided both tip ends of which are inserted into the respective insertion hole 11a of the first and second bending moulds 1, 1-1 arranged on a long side of the deployment paper p among the four bending moulds 1, 1-1, 1-2, 1-3 and thus through which relative distance of the first and second bending moulds 1, 1-1 can be widened or narrowed. Meanwhile, a second moving shaft 2-1 may be further provided both tip ends of which are inserted into the first insertion hole 11a of the first fastening arm 11 of the third and fourth bending moulds 1-1, 1-3 in the same way.
Furthermore, first moving blocks 21 in a vertical form is provided on a middle part of the respective first and second moving shafts 2, 2-1 in order to adjust the relative distance between the first and second bending moulds 1, 1-1 and the third and fourth bending moulds 1-2, 1-3.
In addition, a first through hole 21a is formed horizontally on one side middle end of the first moving blocks 21, into which the first and second moving shafts 2, 2-1 are inserted, and a second through holes 21b are provided on upper and lower ends of the other side of the first moving block, respectively, into which tip ends of a first adjustment shaft and a first support shaft are orthogonally in a spaced relation, which will be described later.
Meanwhile, a third and a fourth moving shafts 3, 3-1 are provided to construct the first to fourth moving shafts 1, 1-1, 1-2, 1-3 as one configuration, which are inserted into the second insertion holes 12a of the lower fastening arm 12, which are opposed to each other between the first and second bending moulds 1, 1-2 made as one configuration through the first moving shaft 2, and the third and fourth bending moulds 1-2, 1-3 made as one configuration through the second moving shaft 2-1, respectively.
That is, both tip ends of the third moving shaft 3 are inserted into the second insertion hole 11a of the upper fastening arm 11 of the second bending mould 1-1, and the second insertion hole 11a of the upper fastening arm 11 of the third bending mould 1-2, respectively, and further both tip ends of the fourth moving shaft 3-1 are into the second insertion hole 11a of the upper fastening arm 11 of the first bending mould 1, and the second insertion hole 11a of the upper fastening arm 11 of the fourth bending mould 1-3, respectively.
In addition, second moving blocks 31 in a vertical shape are provided on the middle parts of the plural of the third and fourth moving shafts 3, 3-1 to adjust a relative distance between the first and third bending moulds 1, 1-2, and the second and fourth bending moulds 1-1, 1-3.
Meanwhile, a through hole 31a is formed on the middle part of one side on each second moving blocks 31, into which the third and fourth moving shafts 3, 3-1 are inserted until the middle parts thereof, respectively, and further a second through hole 31b is formed on the upper and lower ends of the other side orthogonally in a spaced relation with the first through holes 21a, 31a.
A first adjustment shaft 4 is inserted continuously through the second through holes 21b on the respective upper end of first moving blocks 21 and further a fist support shaft 5 is inserted continuously through the second through holes 21b on the respective lower ends thereof.
Here, both tip ends of a second adjustment shaft 6, which is shorter than the first adjustment shaft 4, is inserted through the second through holes 31b on the respective upper end of the third and fourth moving blocks 3, 3-1, and further both tip ends of a second support shaft 7, which is shorter than the first support shaft 6, are inserted through the second through holes 31b on the respective lower end thereof.
Accordingly, the first adjustment shaft 4 and the first support shaft 5 are arranged up and down in a same direction and further the second adjustment shaft 6 and the second support shaft 7 are arranged orthogonally with the first adjustment shaft 4 and the first support shaft 5 and placed on close lower side thereto.
Meanwhile, a support column block 8 is provided on the respective middle orthogonally part of the first and second adjustment shafts 4, 6, and the first and second support shafts 5, 7.
The support column block 8, as shown in Fig. 8, is configured for the first to fourth edge bending moulds 1, 1-1, 1-2, 1-3 to be assembled to the lower side of a pressing unit 921 of a bending means 920 of a conventional quad stayer machine 900 as a one construction wherein the support column block 8 includes a support column member 81 through which the first and second adjustment shafts 4, 5, and the first and second support shafts 6, 7 are inserted and connected, and a bracket 82 in a plate form tightly assembled to the bottom surface of the press unit 921.
A plurality of third through holes 81a into which the first adjustment shaft 4 and the first support shaft 5 are inserted are formed on the upper and lower ends of one side of the support column member 81, and further a plurality of fourth through holes 81b into which the second adjustment shaft 6 and the second support shaft 7 are inserted orthogonally respectively with the first adjustment shaft 4 and the first support shaft 5 are formed on the other side.
The first and second adjustment shafts 4, 6 is configured for variable arrangement of the quad stayer machines such that they move the first and second moving blocks 21, 31 front ward or rear ward to enlarge or narrow the relative distances of the first to fourth bending moulds 1, 1-1, 1-2, 1-3, and further moving prevention grooves 4a, 6a in semi-arc shapes are formed on outer peripheral surfaces on the middle parts thereof and right-handed screw threads 41, 61 and left-handed screw threads 42, 62 running from the moving prevention grooves 4a, 6a to tip ends thereof are formed on the adjustment shafts 4, 6.
Therefore, as shown in Figs. 6, 7, the plurality of first moving blocks 21 assembled to the tip ends of the first adjustment shaft 4, respectively can be moved through the right-handed screw thread 41 and the left-handed screw thread 41, and the second moving block 31 can be traveled front ward and rear ward through the right-handed screw thread 61 and the left-handed screw thread 62 of the second adjustment shaft 6.
Meanwhile, moving front ward and rear ward of the first and second moving blocks 21, 31 using the right-handed screw threads 41, 61 and the left-handed screw threads 42, 62 can be made by using separate tools (L wrench) which can be inserted into wrench grooves 4b, 6b formed on vertical surfaces of one side of the first and second adjustment shafts 4, 6.
Furthermore, a busing b in a ring shape is provided to prevent abrasions of the first and second insertion holes 11a, 12a of the respective upper and lower fastening arms 11, 12 of the first to fourth bending moulds 1, 1-1, 1-2, 103, and the first and second through holes 21a, 21b, which are occurred pursuant to slidings or rotations of the first and second moving shafts 2, 2-1, third and fourth moving shafts 3, 3-1, and the first and second adjustment shafts 4, 6, and the third and fourth adjustment shafts 5, 7. Here, the bushing is helpful for a precise assembling.
And also, a bolt hole 81c is formed through orthogonally to the third and fourth through holes 81a, 81b from an outer surface thereof horizontally to support column member 81 of the support column block 8, and further a bearing bolt v-1 is provided on the support column member 81 of the support column block 8, which is inserted to the bolt hole 81c and a ball bearing on the tip end of which is inserted into the moving prevention grooves 4a, 6a and thus the adjustment shafts 4, 6 would not to be inclined toward one side and departed from.
Additionally, grooves 21c, 31c which are bent inwardly from the bottoms of the first and second moving blocks 21, 31 are formed thereon, respectively, and further locking blocks 21-1, 31-1 are formed which are fitted into the grooves 21c, 31c to press the outer peripheral surfaces of the first and second support shafts 5, 7 for stopping and controlling the first to fourth bending moulds 1, 1-1, 1-2, 1-3.
Here, shaft pressing holes 21-1a, 31-1a which have the same positions and sizes as the second through holes 21b, 31b formed on the lower ends of the first and second moving blocks 21, 31 are formed through the locking blocks 21-1, 31-1, respectively, and further gaps 21-1b, 31-1b are cut and formed across from the outer surfaces of the locking blocks 21-1, 31-1 to the shaft pressing holes 21-1a, 31-1a. Additionally, tightening bolts v-2 which are joined from bottom surfaces on which the spaced-gap 21-b, 31-b are positioned such that the tightening bolts v-2 can narrow the spaced-gaps 21-b, 31-b and then decrease inner diameter of the shaft pressing holes 21-1a, 31-1a to press one outer peripheral part of the first and second support shafts 5, 7, respectively.
Meanwhile, Fig. 9 is a perspective view illustrating the mould-set for a quad stayer machine of rigid box according to another embodiment of the present invention. As shown in Fig. 9, first and second adjustment bolts 4', 6' on upper ends of which rack threads 4'-1, 6'-1 are formed continuously along predetermined ranges of outer peripheral surfaces thereof, differently from the right-handed screw threads 41, 61 and the left-handed screw threads 42, 62, and through holes 21d, 31d are formed orthogonally to the second through holes 21b, 31b on the upper sides of the first and second moving blocks 21, 31. Additionally, pinion bolts v-3 are provided which are inserted into the through holes 21d, 31d and geared with the rack threads 4'-1, 6'-1 to be rotated. According to this embodiment as shown in Fig. 9, even though it is configured differently from the embodiments as aforementioned, the first and second moving blocks 21, 31 can be moved.
Additionally, Fig. 10 is exploded perspective view illustrating a bending mould of the mould-set for a quad stayer machine of rigid box according to the present invention. According to the configuration as shown in Fig. 10, enlargeable plate 13 is provided which is attachable to the respective outer surface of the first to fourth bending moulds 1. 1-1, 1-2, 1-3 such that the first to fourth bending moulds 1, 1-1, 1-2, 1-3 can be enlarged additionally from the respective maximum distance between each bending mould through an addition of the enlarged plate.
Reference number 821 with no description thereof refers to a plurality of through holes which pass through vertically the edges of the bracket plate 82 and assemble the column blocks to the bending means of quad stayer machine using separate screw bolts.
Hereinafter, detailed operation of the mould-set for a quad stayer machine of rigid box will be described.
First, as shown in Fig. 8, an upper surface of the bracket plate 82 is contacted closely with the bottom surface of the pressing unit 921 of the bending means 920 of a conventional quad stayer machine 900, and then assembled simply thereto using a separate screw (not shown).
As a result, the quad stayer machine 900 is operated and then the lowest deployment paper p among a plurality of deployment paper p loaded on the supplying means 930 is supplied with each sheet through the paper supply roll 931. After that, the bending means 920 is operated and then the mould-set A of the present invention assembled to the bottom surface of the bending means together with the pressing unit 921, is lifted repeatedly up and down during which the edges of the housing space part p-1 for the deployment paper p are pressed by a load induced from a down movement of the mould-set A.
Meanwhile, the four edges except for the housing space p-1 of the deployment paper p are lifted up by the bending piece 970 of the quad stayer machine 900 and bent vertically without being affected by the mould-set A which is moved downward and then the tape roll 940 closes the outer surfaces of the tip ends of each edge contacted closely to joint them, thereby completing a formation process of the inside paper for a package box, as shown in Fig. 3.
Through this bending process performed continuously, the formed inside paper is pushed downward by a subsequent inside paper and then dropped and loaded on a conveyor 950 of the quad stayer machine 900 to be conveyed for a subsequent process. Accordingly, the inside paper bent completely is further performed through a bonding process to close the outer surface thereof with outer paper to complete a fabricating process of the package box.
At this time, the total area of the mould-set A is changed variably according to the size of the package box requested by a customer so that fabricating difficulty caused from manufacturing a separate wooden pattern pursuant to the requested size can be solved and the incidental expense thereof can be reduced.
Subsequently, an operation of the mould-set A according to the present invention a total area of which can be changed variably to meet the housing space part p-1 of the package box in a various sizes will be described in detail.
As shown in Fig. 6, the respective position of the first to fourth bending moulds 1, 1-1, 1-2, 1-3 can be changed variably to achieve an enlargement of the total area of the mould-set A of the present invention wherein first a known separate tool (L wrench) is fitted into the wrench groove 41 of the first adjustment shaft 4 and then is rotated in a clockwise.
At this time, the central part of the first adjustment shaft 4 being rotated as aforementioned cannot be changed by the bearing bolt v-1 assembled through one side of the support column 81.
As a result, the plurality of the first moving blocks 21 is slid outward by the right-handed screw thread 41 and the left-handed screw thread 42 and the instances between the first and second bending moulds 1, 1-1 and between the third and fourth bending moulds 1-2, 1-3 are increased, and thus the both side edges of the housing space part p-1 of the corresponding deployment paper p for a bending process and the outer sectional surface of the first to fourth bending moulds 1, 1-1, 1-2, 1-3 become same.
After that, the tightening bolt v-2 is tightend to decrease minutely a diameter of the shaft pressing hole 21-1a of the locking block 21-1 and thus the inner diameter surface of the shaft pressing hole 21-1a presses one outer peripheral surface of the first support shaft 5, thereby fixing the first moving block 21.
Continuously, as shown in Fig. 7, the second adjustment shaft 6 is rotated in a clockwise to move the plurality of second moving blocks 31 in an opposing direction outward so that the first to fourth bending moulds 1, 1-1, 1-2, 1-3 are met with the edges of the housing space part p-1 of the deployment paper p-1 by the first to fourth moving shafts 2, 2-1, 3, 3-1, thereby completing the enlargement of the total area of the mould-set A.
Finally, the tightening bolt v-2 of the second moving block 31 is tightened such that the variable positions of the first to fourth bending moulds 1, 1-1, 1-2, 1-3 cannot be deformed by an external pressure from the aforementioned bending process.
Through the above processes the mould-set A according to the present invention can be applied to a various deployment paper p of variable sizes and thus the edge bending process of the deployment paper p is performed efficiently by pressing precisely the edges of the corresponding housing space part p-1.
For reference, as shown in Fig. 10, when the area of the corresponding housing space part p-1 of various deployment paper p for a bending process as aforementioned is not departed much from a maximum of the enlargement range of the mould-set A, the enlargement plate 13 can be adhered to the respective outer surface of the first to fourth bending moulds 1, 1-1, 1-2, 1-3.
Although the present invention has been described with reference to several exemplary embodiments, the description is illustrative of the invention and is not to be construed as limiting the invention. Various modifications and variations may occur to those skilled in the art, without departing from the spirit and scope of the invention, as defined by the appended claims .