TIDEI AGOSTINO (IT)
US3297014A | 1967-01-10 | |||
US4097246A | 1978-06-27 | |||
JPH04348811A | 1992-12-03 |
CLAIMS
1) The machine for realization of the "abrasive threads" used in cutting machines which are employed in block of marble cutting in a quarry or in a unworked marble yard processing is characterized in that it comprises: • a "loader body" (1) on which are implemented one or more leading pipes (2) which provide a suitable cross section in order to enable relative annular components (3) introduction and following threading in the metal cable (4);
• one or more cylindrical drums (6) that are inserted in the "loading body" (1) and they can rotate the respective cylindrical housings
(5) around an horizontal axis (X) which intersects vertical axis (Z) of the relative leading pipes (2); number of cylindrical drums is the same of the leading pipes (2);
• a loop duct (7) obtained in the "loader body" (1) on horizontal axis (Y) which intersects axes (X, Z) and constituted by a proper circular cross section in order to allow annular components (3) sliding on it;
• a couple of pliers (8a and 8b) having different distances from "loader body" (1), in particular, pliers (8a) result more near than pliers (8b); the distance between said couple of pliers (8a and
8b) is at least as total length adding of every length of the cylindrical housings (5); said couple of pliers (8a and 8b) are providβ by jaws which can tighten the metal cable (4) when they are closed;
• a sliding trolley (9) mounts the said couple of pliers (8a and 8b) and it be able to achieve horizontal moving which are aligned to (Y) axis;
• a third pliers (10) that is positioned between said couple of pliers (8a and 8b) and mounted on sliding trolley (11) which can achieve horizontal moving on (Y) axis; pliers (10) can't completely tighten the metal cable (4) either when jaws are closed;
• a threading bar (12) is situated on other side of the "loader body" (1) respect said pliers (8a, 8b, and 10) and it is a cylindrical pipe aligned on horizontal axis (Y) 1 coaxial at the loop duct (7); said threading bar (12) is characterized by an external diameter lower than diameter of the loop duct (7) and higher than diameter of the metal cable (4); said threading bar (12) implements a total length higher than length of the loop duct (7);
• a electronic control system which is assigned to achieve automatic assembly of the said annular components (3) along with the metal cable (4), according to operations cycle which is below explained from the starting conditions where the annular components (3) are arrived, through said leading pipes (2), into relative cylindrical housings (5) which are oriented on vertical axis (Z), aligned to superior leading pipes (2): a) every cylindrical drums (6) turn on 90° to displace cylindrical housings (5) on horizontal configuration and coaxial at the loop duct (7); b) sliding trolley (9) translates to insert the end (4a) of the metal cable (4) inside hole of the first annular component (3) in the loop duct (7); c) wile pliers (8a) is opening, threading bar (12) moves inside the loop duct (7) until its working extremity is displaced over opened jaws of the pliers (10); every annular components (3) are ejected from the "loader body" (1) and all together are threaded into the metal cable (4); d) threading bar (12) moves back from the loop duct (7), pliers (8a) is tighten and pliers (10) is closed; e) sliding trolley (9) and (11) move back in order to extract end (4a) of the metal cable (4) from loop duct (7); f) pliers (8b) opens its jaws; g) sliding trolley (11) moves back until every threaded annular components (3) are displaced over the pliers (8b).
2) The machine for realization of "abrasive treads", as claimed in claim 1), is characterized in that diameter of the each leading pipe (2) is equivalent at diameter of the associated cylindrical housing (5) in the cylindrical drum (6).
3) The machine for realization of "abrasive treads", as claimed in claim 2), is characterized in that every cross section of the loop duct (7) is locally constant and it has the same diameter of the associated leading pipes (2).
4) The machine for realization of "abrasive treads", as claimed in claim 2), is characterized in that the loop duct (7) provide a variable by step cross sections; each tract of the loop duct (7) has a diameter equivalent at diameter of the cylindrical housing (5) in the cylindrical drum (6) which are displaced in said tract. |
MACHINE FOR REALIZATION OF ABRASIVE THREADS USED IN CUTTER MACHINES
CUTTER MACHINES
DESCRIPTION
The object about present request for industrial invention is a machine for realization of the "abrasive threads" used in cutting machines which are employed in block of marble cutting in a quarry or in a unworked marble yard processing.
TECHNICAL FIELD
Mentioned machines execute marble cutting through a particular "abrasive threads" dragged in rotation by flywheel of the electronic cutting machine.
The mentioned "abrasive threads" consists by a metal cable, which is characterized by ends tied together and threaded annular components.
Said threaded components may be: spacer rings, coil springs, or abrasive pearls, in accordance with a periodic sequence all over in length of the metal cable.
In order to carry out block of marble gradual cutting, the mentioned cutting machine moving back along a sliding rails, while its "abrasive threads" is rolling up around the block that should be cut. Cutting action is caused by
abrasive surfaces of the "abrasive threads".
Above-mentioned machines allows to make vertical, horizontal, or tilt cutting through an hydraulic translation system for cutting machine moving.
BACKGROUND ART
Actually, the "abrasive threads" is made only manually; said components, which have abrasive surface or not, are threaded in a metal cable following a required sequence.
DISCLOSURE OF INVENTION
Purpose of this invention is to achieve a machine for automatic assembly of the "abrasive threads"; in meaning to thread every said annular components in a metal cable.
Said machine comprises a "loader-body" which is a loader for some types of annular components. Leading pipes on vertical axis guide annular components into cylindrical housings which are obtained inside a cylindrical drums. Above "loader-body" lodges said drums that are revolving on horizontal axis.
Mentioned cylindrical housings consist by diametral loop holes which are executed on lateral surfaces of the said drums. Above cylindrical drums can rotate on horizontal axis in order to modify cylindrical housings alignment from vertical to horizontal axis.
Said "loader-body" implements a loop duct on horizontal axis that intersects vertical axis of the leading pipes, and horizontal axis of
cylindrical drums which is aligned on perpendicular direction. When above cylindrical housings is oriented on vertical axis, they are aligned to leading pipes. When said cylindrical drums turn on 90°, above cylindrical housings become oriented on horizontal axis and they are perfectly aligned to said loop duct into the "loader-body".
Above-mentioned machine comprises, aligned at loop duct of the "loader body", a couple of pliers moving together on horizontal axis by sliding trolley, and a third pliers independent moving on the same side and on the same direction by another sliding trolley. Said couple of pliers are designed to support and translate metal cable which should be kept coaxial at loop duct of the "loader body". After said annular components threading, above third pliers translates them on metal cable, in order to enable another threading cycle. Mentioned machine comprises, aligned at loop duct of the "loader body" and on other side respect said pliers, a threading bar which is constituted by a cylindrical pipe that can be translated on alternative moving in order to thread annular components. Above threading bar have an external diameter lower than diameter of the loop duct in the "loader body", and an internal dimeter higher than diameter of the metal cable. After manually positioning of metal cable between said couple of pliers, mentioned machine implements automatic assembly, it musts to execute a synchronized movements sequence. Every said elements of the above machine follow a correct cycle in order to thread annular components all over in length of metal cable.
Mentioned annular components arrive from leading pipes into cylindrical housings, then relative cylindrical drums rotate on 90° in order to align said annular components on horizontal axis of the loop duct into the "loader body". In next stage, said couple of pliers move toward loop duct of the "loader body" to insert an end of metal cable into first annular component of the group that should be threaded.
Said threading bar moves inside loop duct of the "loader body" from other side to thread a group of annular components on metal cable and to thrust outside of the "loader body" said annular components. In this stage inserted end of metal cable doesn't operate any movement and it is lodged into internal hole of threading bar.
On next stage said third pliers move away from the "loader body" to allow group of annular components sliding on metal cable further on above couple of pliers. Inserted end of metal cable becomes free by previous threaded group of annular components and ready to thread next groups. Tanks to the machine, according to the invention, it becomes possible to increase speed of the said "abrasive threads" realization and to decrease production costs through reducing of otherwise necessary manpower.
BRIEF DESCRIPTION OF DRAWINGS
The invention will now be explained by reference to the annexed schematic drawings which have illustrative purpose only. Figure 1 shows, by axonometric schematic representation, said "loader
body", threading bar, and an end of the metal cable.
Figures from 2 to 10 show, by section on vertical plan H-Il of fig. 1 , the consecutive configurations that said elements of the mentioned machine are getting on threading cycle. Related to fig. 1 the machine according to the invention implements the "loader body" (1), on parallelepiped shape, which comprises two leading pipes (2) on vertical axis (Z). Cross section of the leading pipes (2) allows to guide every associate annular components (3) which are designed to be threaded on the metal cable (4). Every leading pipes (2) arrive into corresponding cylindrical housings (5) obtained on lateral surfaces of the cylindrical drums (6) which are inserted into the "loader body" (1) and can rotate on horizontal axis (X). Vertical axis (Z) of the leading pipes (2) intersects horizontal axis (X) of the cylindrical drums (6). Loop duct (7) passes through said "loader body" (1) on horizontal axis (Y) which intersects above-mentioned (X) and (Z) axes. Every said annular components (3) cross into circular section of the loop duct (7) which implements a suitable diameter. Leading pipes (2), cylindrical housings (5), and loop duct (7) of the "loader body" (1 ) having the same diameter. Said cylindrical drums (6) interrupt material continuity of the loop duct (7) until they turn on 90° on (X) axis in order to align above cylindrical housings (5) on said horizontal loop duct (7) on (Y) axis. Related to fig. from 2 to 10, the above-mentioned machine implements a couple of pliers (8a and 8b) and a third pliers (10) which are displaced on
one side respect at the "loader body" (1), where the metal cable (4) is situated.
Said couple of pliers (8a and 8b) are mounted together on sliding trolley
(9) and they can translate on horizontal axis (Y). Above pliers (8a) is more near to the "loader body" (1 ) than pliers (8b), distance between said couple of pliers (8a and 8b) is at least as total length adding of every length of the cylindrical housings (5).
Above third pliers (10) is positioned between said couple of pliers (8a and 8b), it is mounted on sliding trolley (11) and it can translates, independent of said couple of pliers (8a and 8b), on (Y) axis.
Said couple of pliers (8a and 8b) are provide by jaws which can tighten the metal cable (4) which is supported and translated for manually positioning and to carry out threading cycle. Mentioned third pliers (10) can't quite tighten the metal cable (4) by its jaws so that it implements annular components (3) sliding after threading stage.
When said pliers (8a, 8b, and 10) are opened every annular components (3) can slid along the metal cable (4).
Both sliding trolley (9) and (11) be able to achieve moving to or away march from the "loader body" (1). When the machine, according to the invention, is stopped before threading cycle starting, the end (4a) of the metal cable (4) is displaced out side of the pliers (8a) in order to thread the first of annular components (3) in the loop duct (7) after the sliding trolley (9) has been completed moving to the "loader body" (1).
Above-mentioned machine provides a threading bar (12) on other side of the "loader body" (1) respect said pliers (8a, 8b, and 10). Mentioned threading bar (12) is a cylindrical pipe aligned to horizontal (Y) axis, coaxial at loop duct (7) of the "loader body" (1) and it is characterized by an external diameter lower than diameter of the loop duct (7) and an internal diameter higher than diameter of the metal cable (4). Said threading bar (12) has a total length higher than length of the loop duct (7) and it can move inside the loop duct (7), on (Y) axis, in order to thrust the annular components (3), which are lodged in the loop duct (7), out of the "loader body" (1).
When the said machine is stopped before threading cycle starting, the above threading bar (12) is configured with its working extremity situated on entering of the loop duct (7). The machine, according to the invention, provides a electronic control system which is designed to activate and monitor every operating device on correct sequence in order to achieve automatic assembly of the annular components (3) along with the metal cable (4).
BEST MODE FOR CARRYNG OUT THE INVENTION Will now be delineated an operation cycle of the said machine. Initial conditions are showed in fig. 3:
• the annular components (3) are arrived into relative cylindrical housings (5), which are oriented on vertical axis (Z), from leading pipes (2);
• the threading bar (12) are positioned on one entering of the loop duct (7) of the "loader body" (1 );
• the end (4a) of the metal cable (4) are situated near to other entering of the loop duct (7);
• the couple of pliers (8a and 8b) are tightened to keep the metal cable (4) and they are on back position respect the "loader body"
(1);
• the third pliers (10) are opened and on advance position respect the "loader body" (1). From above conditions, consecutive stages of the operation cycle are: a) every cylindrical drum (6) turns on 90° to displace cylindrical housings (5) on horizontal configuration and coaxial at the loop duct (7), as showed in fig. 4; b) sliding trolley (9) translates to move the couple of pliers (8a and 8b) in advance position and to insert end (4a) of the metal cable (4) inside hole of the first annular component (3) in the loop duct (7), as showed in fig. 5; c) wile pliers (8a) is opening, threading bar (12) moves inside the loop duct (7) until its working extremity is displaced over the opened jaws of the pliers (10); every annular components (3) are ejected from the "loader body" (1) and all together are threaded into metal cable (4), as showed in fig. 6; d) threading bar (12) moves back from the loop duct (7), pliers (8a) is tighten and pliers (10) is closed, as showed in fig. 7;
e) sliding trolley (9) and (11) move back in order to extract end (4a) of the metal cable (4) from the loop duct (7), as showed in fig. 8; f) pliers (8b) open its jaws, as showed in fig. 9; g) sliding trolley (11) moves back until every threaded annular components (3) are displaced over the pliers (8b), as showed in fig.10.
Said annular components (3) may be on different external or internal diameters and length, according to used metal cable (4) and "abrasive threads" which would to be realized. In above-mentioned case the diameters of the leading pipes (2) must be different for every annular components that should be loaded, the same for the associated cylindrical housings (5). In the said case the loop duct (7) of the "loader body" mustn't be on constant diameter but it should be divided on consecutive sections with different diameters which are increasing on out put direction of the annular components. Every said section of the loop duct (7) should be associated at each cylindrical housing (5) and it have the same diameter.