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Patent Searching and Data


Title:
WRAPPING WHEEL OF AN AUTOMATIC BUTTON SHANK WRAPPING MACHINE AND AUTOMATIC BUTTON SHANK WRAPPING MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/095106
Kind Code:
A1
Abstract:
A wrapping wheel of an automatic button shank wrapping machine comprises: a thread guide tube (10), wherein one end of the thread guide tube is provided with a disc (20). A middle part of the disc is provided with a first thread guide hole (30) connected to the thread guide tube, wherein an outer diameter of the disc is larger than that of the thread guide tube. A side edge of the disc facing away from the thread guide tube is provided with a raised portion (40), wherein the raised portion is provided with a second thread guide hole (50). Such wrapping wheel is stable and not prone to deformation, and causes no vibration, thus cutting the equipment maintenance cost.

Inventors:
SCHÄRER PIERRE ANDRÉ (CH)
Application Number:
IB2019/001193
Publication Date:
May 14, 2020
Filing Date:
November 05, 2019
Export Citation:
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Assignee:
ASCOLITE SHENZHEN TRADING CO LTD (CN)
International Classes:
D05B43/00
Foreign References:
CN209098946U2019-07-12
JPH06254278A1994-09-13
JPH06254278A1994-09-13
EP0923655A11999-06-23
DE202016002195U12016-07-06
CN206127621U2017-04-26
CN204491186U2015-07-22
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Claims:
CLAIMS:

1. A wrapping wheel of an automatic button shank wrapping machine, comprising a thread guide tube (10), wherein one end of the thread guide tube (10) is provided with a disc (20), a middle part of the disc (20) being provided with a first thread guide hole (30) connected to the thread guide tube (10) , wherein an outer diameter of the disc (20) is larger than that of the thread guide tube (10), and wherein a side edge of the disc (20) facing away from the thread guide tube (10) is provided with a raised portion (40) , and the raised portion (40) is provided with a second thread guide hole (50) .

2. The wrapping wheel according to claim 1, wherein the raised portion (40) is a vertical wall protruding from a side edge of the disc (20) facing away from the thread guide tube (10) .

3. The wrapping wheel according to claim 2, wherein an annular edge (60) protrudes at the side edge of the disc (20) in a direction deviating from the thread guide tube (10), and the annular edge (60) is connected to the vertical wall.

4. The wrapping wheel according to claim 3, wherein the annular edge (60), the vertical wall and the disc (20) form an accommodating recess (70), the wrapping wheel further comprising a protection cover (80) which is arranged in the accommodating recess (70), and is provided with a thread guide groove (801), through which the thread guide tube (10) is connected to the second thread guide hole (50) .

5. The wrapping wheel according to any one of the claims 2 to 4, wherein the vertical wall is provided with a connection hole (401) extending from a free end of the vertical wall through the vertical wall and the disc (20) to accommodate a tension device (90) of the automatic button shank wrapping machine.

6. The wrapping wheel according to any one of the preceding claims, wherein a connection between a side surface of the disc (20) deviating from the direction of the thread guide tube (10) and a hole wall of the first thread guide hole (30) is formed with a smooth transition.

7. The wrapping wheel according to any one of the preceding claims, wherein a circumferential wall of the disc (20) is provided with a clearance groove (100) for accessing fixation screws of the automatic button shank wrapping machine.

8. The wrapping wheel according to any one of the preceding claims, wherein a first reinforcement wall (101) is provided around one end of the thread tube wall of the thread guide tube (10) close to the disc (20) , wherein the first reinforcement wall (101) is connected to the disc (20) .

9. The wrapping wheel according to claim 8, wherein a second reinforcement wall (102) is provided around one end of the thread tube wall of the thread guide tube (10) close to the first reinforcement wall (101), wherein the second reinforcement wall (102) is connected to the first reinforcement wall (101), and wherein a wall thickness of the first reinforcement wall (101) is larger than that of the second reinforcement wall (102) .

10. An automatic button shank wrapping machine, wherein the machine comprises the wrapping wheel according to any one of the preceding claims.

Description:
WRAPPING WHEEL OF AN AUTOMATIC BUTTON SHANK WRAPPING MACHINE AND AUTOMATIC BUTTON SHANK WRAPPING MACHINE

TECHNICAL FIELD OF THE INVENTION

The present invention relates to the field of an automatic button shank wrapping machine, particularly, to a wrapping wheel of an automatic button shank wrapping machine and an automatic button shank wrapping machine comprising such wrapping wheel.

BACKGROUND OF THE INVENTION AND PRIOR ART

In existing automatic button shank wrapping machines, as are known from, e.g., document EP 0 923 655 B1 (Fig. 1), the yarn is winded by a Z-shaped or S-shaped winding thread tube, which is prone to bending and loss due to the pull force of the yarn or external acting forces. During actual production, it is necessary to freguently change deformed thread tubes, resulting in high maintenance cost.

OBJECT OF THE INVENTION

The object of the present invention is to propose a wrapping wheel of an automatic button shank wrapping machine and an automatic button shank wrapping machine including such wrapping wheel, capable of reducing the consumption of thread tubes and thus cutting eguipment maintenance cost.

SUMMARY OF THE INVENTION

The above object is solved by the features specified in claims 1 and 10, respectively. Advantageous and appropriate developments of the invention form the subject matter of claims 2 to 9.

According to the present invention a wrapping wheel of an automatic button shank wrapping machine comprises a thread guide tube, wherein one end of the thread guide tube is provided with a disc, a middle part of the disc being provided with a first thread guide hole connected to the thread guide tube, wherein an outer diameter of the disc is larger than that of the thread guide tube, and wherein a side edge of the disc facing away from the thread guide tube is provided with a raised portion, and the raised portion is provided with a second thread guide hole.

Optionally, the raised portion is a vertical wall protruding from a side edge of the disc facing away from the thread guide tube .

Optionally, an annular edge protrudes at the side edge of the disc in a direction deviating from the thread guide tube, and the annular edge is connected to the vertical wall.

Optionally, the annular edge, the vertical wall and the disc form an accommodating recess, the wrapping wheel further comprising a protection cover which is arranged in the accommodating recess, and is provided with a thread guide groove, through which the thread guide tube is connected to the second thread guide hole.

Optionally, the vertical wall is provided with a connection hole extending from a free end of the vertical wall through the vertical wall and the disc to accommodate a tension device of the automatic button shank wrapping machine. Optionally, a connection between a side surface of the disc deviating from the direction of the thread guide tube and a hole wall of the first thread guide hole is formed with a smooth transition.

Optionally, a circumferential wall of the disc is provided with a clearance groove for accessing fixation screws of the automatic button shank wrapping machine.

Optionally, a first reinforcement wall is provided around one end of the thread tube wall of the thread guide tube close to the disc, wherein the first reinforcement wall is connected to the disc.

Optionally, a second reinforcement wall is provided around one end of the thread tube wall of the thread guide tube close to the first reinforcement wall, wherein the second reinforcement wall is connected to the first reinforcement wall, and wherein a wall thickness of the first reinforcement wall is larger than that of the second reinforcement wall.

The present invention also provides an automatic button shank wrapping machine, comprising the wrapping wheel as described above. As to the structure of the wrapping wheel of the automatic button shank wrapping machine, it can be referred to the above description, so as to avoid repetitions here. Optionally, in a twin design, the automatic button shank wrapping machine may comprise two wrapping wheels as described above, each assigned to one of two V-shaped openings in a whipping plate of the automatic button shank wrapping machine. In such design the automatic button shank wrapping machine is capable of simultaneously securing two buttons at once.

In the technical solution described above, the commonly-used thread tube is replaced by a wrapping wheel to change the structure of the winding thread tube. Thus, yarn can be directly inserted from a middle cavity at one end of the wrapping wheel, and be fed out from a front hole at the other end of the wrapping wheel. The wrapping wheel structure, which is more stable than the thread tube structure, is not deformed by the pull force of the yarn or other external acting forces, making the machine durable while ensuring consistent winding and high wrapping quality.

By replacing the thread tube with a wrapping wheel, it is not necessary to irregularly replace the thread tube during production, thus cutting the equipment maintenance cost. In addition, the wrapping wheel is fixed and connected by a mounting hole, which is convenient for disassembly as well as recovery and reuse, thereby cutting actual assembly cost of the machine .

In the prior art, to keep the thread tube stable, it is necessary to connect the thread tube to a plurality of parts in the machine, resulting in low disassembly efficiency and inconvenient maintenance. However, according to the present invention, the wrapping wheel is simply connected to other parts, and facilitates disassembly.

Finally, the simple and stable structure of the wrapping wheel of the automatic button shank wrapping machine causes no vibration during rotation, which ensures normal rotation of the motor connected to the wrapping wheel, and further protects the motors from damage.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinbelow, the invention will be explained in more detail on the basis of a preferred example of embodiment and with reference to the appended, schematic drawings. In the drawings: FIG. 1 is a perspective front view of a wrapping wheel structure of an automatic button shank wrapping machine according to the present invention;

FIG. 2 is a perspective rear view of the wrapping wheel structure of the automatic button shank wrapping machine according to the present invention;

FIG. 3 is a perspective back view of a protection cover for the wrapping wheel structure of the automatic button shank wrapping machine according to the present invention;

FIG. 4 is an assembly drawing of the wrapping wheel structure of the automatic button shank wrapping machine according to the present invention; and

FIG. 5 is an exploded view of the wrapping wheel structure of the automatic button shank wrapping machine according to the present invention.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION

The technical solution of an embodiment of the present invention will be clearly and completely described with reference to the accompanying drawings. Apparently, the embodiment in the following description is merely an example, but is not the only way to carry out the technical teaching claimed in the appended claims.

It should be noted that directional indications (such as upper, lower, left, right, front, and rear) are to be understood with respect to the relative positional relationship and movement of each component under a particular angle of view (as shown in the drawings). The directional indications shall change when the particular angle of view is changed.

In addition, the terms "first" and "second" in the documents at hand are used solely for simpler description, and should not be understood as an indication or implication of relative importance or the number of technical features specified. Therefore, features specified with "first" and "second" can indicate or imply at least one such feature. In addition, the technical features of the embodiment may be combined with each other in any way, provided that such combination can be realized by persons skilled in the art. When the combination is contradictory or cannot be realized, it should be understood that such combination does not exist, and is not within the protection scope of the appended claims.

Figures 1 and 2 show a wrapping wheel structure of an automatic button shank wrapping machine, which can be used in the automatic button shank wrapping machine. In general, the wrapping wheel of the automatic button shank wrapping machine comprises a thread guide tube 10, wherein one end of the thread guide tube 10 is provided with a disc 20. A middle part of the disc 20 is provided with a first thread guide hole 30 connected to the thread guide tube 10, wherein an outer diameter of the disc 20 is larger than that of the thread guide tube 10. A side edge of the disc 20 facing away from the thread guide tube 10 is provided with a raised portion 40, and the raised portion 40 is provided with a second thread guide hole 50.

The yarn is inserted from one end of the thread guide tube 10 remote from the disc 20, and is passed out from the first thread guide hole 30, via which the thread guide tube 10 is connected to an upper side of the disc 20. The yarn is then led out from the second thread guide hole 50 in the raised portion 40, and is connected to a tension device 90. In the above-referenced prior art the thread tube corner is subject to a pulling force due to a direction change of the yarn, so that the thread tube is prone to deformation and scraping as the thread tube wall is generally thin. In the present design, however, the turning point of the thread is arranged on the disc 20 of the wrapping wheel. The thickness of the material of the disc 20 is far beyond the thickness of the known thread tube corner. Therefore, a normal pull force of yarn cannot possibly lead to deformation of the disc 20, thus ensuring that the entire wrapping wheel is durable.

Replacing the known thread tube with the present wrapping wheel can improve the wrapping quality, and reduce the maintenance effort previously involved because of the required frequent thread tube changes due to deformation of the thread tube, which finally cuts equipment maintenance cost.

Finally, as the wall thickness of the wrapping wheel of the automatic button shank wrapping machine is large, the structure is simpler and more stable, causing no vibration during rotation, which ensures normal rotation of the motor connected to the wrapping wheel, and further protects the motor from damage. In addition, the wrapping is consistent and the wrapping quality is improved.

In this embodiment, the raised portion 40 is a vertical wall or vertical arm protruding from a side edge at a side surface of the disc 20 deviating from the thread guide tube 10. The vertical wall is provided with a connection hole 401 extending from a free end or the top of the vertical wall through the vertical wall and the disc 20 to accommodate the tension device 90 of the wrapping wheel of the automatic button shank wrapping machine (see Fig. 4). In the embodiment shown (see Figures 1 and 4), an annular edge 60 protrudes at the side edge of the disc 20 in a direction deviating from the thread guide tube 10, and the annular edge 60 is connected to the vertical wall. Specifically, the annular edge 60 can be provided along the side edge at the side wall of the disc 20, wherein the annular edge 60 connects to the vertical wall to stiffen the vertical wall.

In the aforesaid embodiment, the annular edge 60, the vertical wall and the disc 20 form an accommodating recess 70. The wrapping wheel of the automatic button shank wrapping machine also comprises a protection cover 80 shown in Fig. 3. The protection cover 80 is arranged in the accommodating recess 70. Further, the protection cover 80 is provided with a thread guide groove 801, through which the thread guide tube 10 is connected to the second thread guide hole 50. As the annular edge 60 is provided along the side edge of the disc 20, the accommodating recess 70 can be naturally formed.

When the protection cover 80 is placed in the accommodating recess 70, the thread is entirely covered without blocking the running of the thread, thus protecting the thread from pollution or other external effects. In addition, holes can be set on corresponding positions of the protection cover 80 and the disc 20 to enable aligned mounting. When the protection cover 80 is closed, a fixed connection can be kept between the protection cover 80 and the wrapping wheel of the automatic button shank wrapping machine by bolt boring or other fixing methods .

In the embodiment shown, the connection between the side surface of the disc 20 deviating from the direction of the thread guide tube 10 and the hole wall of the first thread guide hole 30 is formed with a smooth transition. The smooth transition for the thread corner ensures that the thread can smoothly change the running direction while passing through this position, without causing thread layer wear.

In the embodiment shown (cf. Figures 1 and 4), the circumferential wall of the disc 20 is provided with a clearance groove 100 for accessing other screws of the automatic button shank wrapping machine. When the wrapping wheel is connected to other parts of the automatic button shank wrapping machine, the clearance groove 100 provides access to screw positions of another component of the automatic button shank wrapping machine, thus facilitating assembly.

In the embodiment shown (see Fig. 2), a first reinforcement wall 101 is provided around the circumference at one end of the thread tube wall of the thread guide tube 10 close to the disc 20, wherein the first reinforcement wall 101 is connected to the disc 20. By providing the first reinforcement wall 101 on the thread guide tube 10 close to the disc 20, the binding force between the disc 20 and the thread guide tube 10 can be enhanced, and the thickness of the wrapping wheel of the automatic button shank wrapping machine can be increased, making the wrapping wheel of the automatic button shank wrapping machine less prone to deformation, again serving a better control of maintenance cost.

In the aforesaid embodiment, further, a stiffener is provided on the outer surface where the disc 20 is connected to the first reinforcement wall 101. The stiffener can provide a better connection between the disc 20 and the thread guide tube 10, making the wrapping wheel of the automatic button shank wrapping machine more stable.

In the aforesaid embodiment, a second reinforcement wall 102 is provided around one end of the thread tube wall of the thread guide tube 10 close to the first reinforcement wall 101. The second reinforcement wall 102 is connected to the first reinforcement wall 101, wherein the wall thickness of the first reinforcement wall 101 is larger than that of the second reinforcement wall 102. Therefore, at the thread guide tube 10, reinforcement walls 101, 102 of different sizes are provided, so that the thread guide tube 10 has a "step" shape and the thread guide tube 10 can be fitted with associated driving, flange and sensor parts 110, 120, 130 of the automatic button shank wrapping machine, as shown in Figures 4 and 5.

The present invention also provides for an automatic button shank wrapping machine, which comprises the above described wrapping wheel structure. The detailed structure and function of the wrapping wheel of the automatic button shank wrapping machine have been described above already, this is why the related description is not repeated here. The free end of the thread guide tube 10 is connected to a pulley as driving part 110 of the automatic button shank wrapping machine. A socket flange 120 of the automatic button shank wrapping machine is connected between the second reinforcement wall 102 and the free end of the thread guide tube 10, wherein the second reinforcement wall 102 is supported by bearing parts of the automatic button shank wrapping machine.

It remains to be noted here that the present wrapping wheel, when mounted to the automatic button shank wrapping machine, may interact with a yarn catcher assembly that is the subject of a parallel, i.e. filed on the same application date, International Application PCT/EP2019/XXXXXX with the title "yarn catcher assembly of an automatic button shank wrapping machine and automatic button shank wrapping machine", to which at this point express reference is made with regard to the structure and function thereof for avoidance of repetitions. The above embodiment is merely a preferred embodiment of the present invention, and should not be understood to limit in any way the present invention as defined by the appended claims. A wrapping wheel of an automatic button shank wrapping machine comprises: a thread guide tube, wherein one end of the thread guide tube is provided with a disc. A middle part of the disc is provided with a first thread guide hole connected to the thread guide tube, wherein an outer diameter of the disc is larger than that of the thread guide tube. A side edge of the disc facing away from the thread guide tube is provided with a raised portion, wherein the raised portion is provided with a second thread guide hole. Such wrapping wheel is stable and not prone to deformation, and causes no vibration, thus cutting the equipment maintenance cost.

LIST OF REFERENCE NUMERALS thread guide tube

disc

first thread guide hole

raised portion

second thread guide hole

annular edge

accommodating recess

protection cover

tension device

clearance groove

first reinforcement wall

second reinforcement wall

driving part

socket flange

sensor part

connection hole

thread guide groove