Multi-wire saw with wire end clamping function

Abstract

The application discloses a multi-wire cutting machine with a wire end clamping function, and a clamping device is arranged on a wire cutting machine shell, the clamping device comprises a mandrel, elastic clamping pieces, a pneumatic cylinder and a dust cover, one end of the elastic clamping pieces is fixedly connected with the mandrel, the dust cover is located outside the elastic clamping pieces, and the pneumatic cylinder is arranged at one end of the mandrel; the compressed air pipe is communicated with the pneumatic cylinder and an air outlet, on one hand, the pneumatic cylinder can drive the elastic clamping pieces to clamp the steel wire, and on the other hand, the steel wire end at the fixed position of the elastic clamping pieces is cleaned to keep the steel wire end clean; the device can effectively solve the problem that the steel wire end is easy to fall off and difficult to operate when the wire wheel is replaced in the existing wire cutting machine, can effectively and conveniently fix the steel wire end, is convenient for on-site personnel to operate, and has the advantages of improving work efficiency and the like.

Description

Technical Field

[0001] This invention relates to the field of wire cutting machine technology, specifically to a multi-wire cutting machine with a wire end clamping function. Background Technology

[0002] Multi-wire cutting is a new type of cutting process that uses the high-speed reciprocating motion of metal wires to bring abrasive particles into the semiconductor processing area for grinding, simultaneously cutting hard and brittle materials such as semiconductors into hundreds of thin wafers in one operation. CNC multi-wire cutting machines have gradually replaced traditional internal circular cutting and become the main method for silicon wafer cutting.

[0003] In the wiring device of a wire EDM machine, the wire on the take-up reel needs to be replaced after use or when the wire on the pay-off reel is over-wound. When replacing it, the old wire connected to the tension arm needs to be cut off, a new wire reel needs to be installed, and the wire end on the new reel needs to be reconnected to the wire end on the tension arm. Since there is no place to fix the wire end on the wire EDM machine, the operator can only use tape to stick the wire end to the outer shell of the wire EDM machine. After the new wire reel is installed, the wire ends are removed and connected to each other.

[0004] Patent CN105269697B discloses a pulley for a multi-wire cutting machine. The pulley provided has a support part on the protruding post, and a wheel body is sleeved on the support part. A limiting part located on the outer cover limits the wheel body between the pulley body and the outer cover. A rotating ring fixed on the sleeve part is connected to the operating part on the positioning member through a flexible wire. Rotating the rotating ring can drive all the positioning members to rotate, thereby causing the limiting part to retract into the groove and lose its limiting function on the wheel body. This solves the problem of the difficulty in replacing the wheel body in the pulley device used in the multi-wire cutting machine in the prior art.

[0005] The aforementioned patent addresses the difficulty of disassembling and assembling wire reels, but it doesn't solve the problem of securing the wire ends when replacing reels. Furthermore, existing wire cutting machines lack a designated place to secure the wire ends, relying solely on tape. This approach presents several problems: First, tape must be prepared for each reel replacement, and dust on the work surface and wire ends can render the tape ineffective, causing the wire ends to fall off. These fallen ends then slide off the tension arm and guide wheel, requiring rewiring. Second, the operation is inconvenient. Each replacement requires preparing and cutting tape, then cutting the wire before attaching the ends. Workers wear gloves during this process, further complicating operations and impacting efficiency. Additionally, adhesive residue from the tape easily remains on the outer casing, necessitating cleaning. Summary of the Invention

[0006] In view of this, the present invention provides a multi-wire cutting machine with a wire-clamping function to solve the problem that the wire ends are not easy to fix when changing the wire wheel in existing multi-wire cutting machines, and are easy to slip off.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows:

[0008] A multi-wire cutting machine with wire clamping function includes a cutting device, a wiring device, a gas device, a cooling device, a slurry tank, and a housing. A clamping device is provided on the housing of the wire cutting machine located on one side of the wiring device. The clamping device is detachably connected to the wire cutting machine by bolts. The clamping device includes a mandrel arranged in the horizontal direction, an elastic clamping piece arranged in the vertical direction on the mandrel, a cylinder for pushing the elastic clamping piece, and a dust cover for dust prevention. One end of the elastic clamping piece is fixedly connected to the mandrel, and the other end is slidably connected to the mandrel. The dust cover consists of an outer dust cover and an inner dust cover and is located outside the elastic clamping piece. The outer dust cover is fixedly connected to the fixed side of the elastic clamping piece, and the inner dust cover is connected to the movable side of the elastic clamping piece. The outer dust cover is sleeved on the outside of the inner dust cover and slidably connected to it. The dust cover has a window for inserting steel wire.

[0009] The cylinder is located at one end of the mandrel, and the output end of the cylinder is fixedly connected to one side of the inner dust cover. The other end of the mandrel is provided with an air inlet. The air inlet is connected to a compressed air pipe through a first air inlet pipe. A valve is provided on the compressed air pipe, and the compressed air pipe is connected to the gas device on the wire cutting machine. The cylinder is connected to the compressed air pipe through a second air inlet pipe. An air outlet is provided on the elastic clamp at the steel wire clamping point. The air outlet and the air inlet are connected through an air outlet pipe.

[0010] As can be seen from the above technical solution, the present invention provides a multi-wire cutting machine with wire end clamping function, and its advantages over the prior art are:

[0011] This invention connects a compressed air pipe to both a cylinder and an air outlet. On one hand, the pipe connects to the cylinder, enabling it to clamp the steel wire with an elastic clamp. On the other hand, the pipe connects to the air outlet on the elastic clamp, cleaning the wire end at the clamping point and keeping it clean for easy connection to new wire ends. A dust cover isolates most external dust, reducing dust accumulation at the clamping point. The clamping device is secured to the wire cutting machine housing with bolts, allowing for quick disassembly and installation during maintenance or replacement. Connecting the compressed air pipe to the gas device on the wire cutting machine provides compressed air, saving energy. This device effectively solves the problem of wire ends easily falling off and being difficult to operate when using tape to secure the wire reel during replacement in existing wire cutting machines. It provides convenient and efficient wire end securing, facilitating on-site operation and improving work efficiency. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the appearance of the present invention.

[0013] Figure 2 This is a schematic diagram of the internal structure of the protective cover of the present invention.

[0014] Figure 3 This is a schematic diagram showing the connection relationship between the opening cover and the spring of the present invention.

[0015] Figure 4 This is a schematic diagram of the installation position of the clamping device of the present invention on a multi-wire cutting machine.

[0016] Figure 5 This is a schematic diagram showing the valve installation positions on the first and second air intake pipes of the present invention.

[0017] In the diagram: 1-Mandrel, 11-First air inlet pipe, 12-Second air inlet pipe, 2-Elastic clamping plate, 21-V groove, 3-Cylinder, 4-Dust cover, 41-Outer dust cover, 42-Inner dust cover, 421-Opening, 43-Opening cover, 44-Scraper, 45-Spring, 5-Collection bag, 6-Clamping device, 7-Housing, 8-Tension arm, 9-Spindle, 91-Steel wire. Detailed Implementation

[0018] The technical solutions and effects of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Please refer to Figure 1 , 4 This invention provides a multi-wire cutting machine with wire clamping function, including a cutting device, a wiring device, a gas device, a cooling device, a mortar tank, and a housing 7. A clamping device 6 is provided on the housing 7 of the wire cutting machine located on one side of the wiring device. The clamping device 6 is detachably connected to the wire cutting machine by bolts. The clamping device 6 includes a mandrel 1 arranged in the horizontal direction, an elastic clamp 2 arranged in the vertical direction on the mandrel 1, a cylinder 3 for pushing the elastic clamp 2, and a dust cover 4 for dust prevention. One end of the elastic clamp 2 is fixedly connected to the mandrel 1, and the other end is slidably connected to the mandrel 1. The dust cover 4 is composed of an outer dust cover 41 and an inner dust cover 42, and is located outside the elastic clamp 2. The outer dust cover 41 is fixedly connected to the fixed side of the elastic clamp 2, and the inner dust cover 42 is connected to the movable side of the elastic clamp 2. The outer dust cover 41 is sleeved on the outside of the inner dust cover 42 and slidably connected to it. The dust cover 4 is provided with a window for inserting steel wire 91.

[0020] The cylinder 3 is located at one end of the mandrel 1. The output end of the cylinder 3 is fixedly connected to one side of the inner dust cover 42. The other end of the mandrel 1 is provided with an air inlet. The air inlet is connected to the compressed air pipe through the first air inlet pipe 11. The compressed air pipe is provided with a valve and is connected to the gas device on the wire cutting machine. The cylinder 3 is connected to the compressed air pipe through the second air inlet pipe 12. The elastic clamp 2 at the steel wire clamp 91 is provided with an air outlet. The air outlet and the air inlet are connected through an air outlet pipe.

[0021] In this embodiment, the wire cutting machine is equipped with a clamping device, which can fix the cut end of the steel wire 91 when replacing the wire reel 9, thereby preventing the wire end from falling off and requiring rewiring. When replacing the wire reel 9, the old wire reel 9 and the steel wire 91 on the tension arm 8 are cut off. The end of the steel wire 91 on the tension arm 8 is placed in the elastic clamp 2. Then, the valve is opened to allow compressed air from the gas device to enter the first air inlet pipe 11 and the second air inlet pipe 12. The compressed air in the first air inlet pipe 11 passes through the air inlet of the mandrel 1 to the air outlet of the elastic clamp 2, cleaning the end of the steel wire 91 in the elastic clamp 2, making the end of the steel wire 91 clean, easy to fix, and easy to connect with the new wire reel 9. The compressed air in the second air inlet pipe 12 enters the cylinder 3. The output end of the cylinder 3 pushes the inner dust cover 42 to move to the outer dust cover 41. The inner dust cover 42 moves and squeezes the elastic clamp 2. The elastic clamp 2 is squeezed and clamps the end of the steel wire 91. After the new wire wheel 9 is installed, the end of the wire in the clamping device 6 is taken out and connected to the end of the new wire wheel 9. After the connection is completed, the steel wire 91 is tightened by rotating the installed wire wheel 9. Finally, the valve is closed and the cylinder 3 drives the inner dust cover 42 to reset.

[0022] In one embodiment, please refer to Figure 1 The elastic clip 2 includes several truncated cones made of elastic material. These truncated cones are arranged axially along the horizontal direction on the spindle 1. The truncated cones are connected by large circular faces to large circular faces and small circular faces to small circular faces. The steel wire 91 has a V-groove 21 formed between the small circular faces of two adjacent truncated cones at the wire end.

[0023] The elastic clip 2 is hollow inside and is provided with a spring post to assist the elastic clip 2 in rebounding.

[0024] In this embodiment, when the clamping device 6 is fixing the wire end, the wire end is placed in the V groove 21, the valve is opened, and the output end of the cylinder 3 pushes the inner dust cover 42 to move towards the outer dust cover 41. The inner dust cover 42 moves and squeezes the elastic clamp 2. The V groove 21 of the elastic clamp 2 is squeezed and clamps the wire end of the steel wire 91. After the new wire wheel 9 is installed, the wire end in the clamping device 6 is taken out and connected to the wire end of the new wire wheel 9. Finally, the valve is closed, the cylinder 3 drives the inner dust cover 42 to reset, and the elastic clamp 2 resets through its own and the spring column's rebound. The V groove 21 in the elastic clamp 2 fixes the steel wire 91. The cylinder 3 squeezes the elastic clamp 2, which also squeezes the V groove 21 and clamps the wire end of the steel wire 91 on it, making the fixation more secure and preventing the wire end from falling off. This makes it easier for the operator to operate. The spring column can assist the elastic clamp 2 to reset after use, preparing for the next wire clamping action.

[0025] In one embodiment, please refer to Figure 2 , 3 The inner dust cover 42 is provided with a brush for cleaning dust on its top surface, and a collection bag 5 for collecting dust is provided at the bottom of the dust cover 4. Both the inner dust cover 42 and the outer dust cover 41 are provided with openings 421 for dust to fall into the collection bag 5.

[0026] The collection bag 5 is connected to the opening 421 of the outer dust cover 41. The outer dust cover 41 contains an opening cover 43 for covering the opening 421, a spring 45 for resetting the opening cover 43, and a scraper 44 for removing dust from the opening cover 43. One end of the spring 45 is fixedly connected to the inner wall of the outer dust cover 41, and the other end is fixedly connected to one side of the opening cover 43. The opening cover 43 is located above the opening 421 and is slidably connected to the inner bottom surface of the outer dust cover 41. The scraper 44... 4 is located above the spring 45 and the opening cover 43, and one end of the scraper 44 is fixedly connected to the inner wall of the outer dust cover 41; the inlet diameter of the collection bag 5 gradually changes as the inner dust cover 42 moves. When the elastic clip 2 works, the inner dust cover 42 pushes the opening cover 43 to change the size of the opening 421. When the opening 421 of the inner dust cover 42 coincides with the opening 421 of the outer dust cover 41, the inlet diameter of the collection bag 5 is at its maximum, and the dust blown down and swept down falls into the collection bag 5 for collection.

[0027] The dust cover 4 located below the elastic clip 2 has two downward-sloping baffles, which allow the falling dust to fall as high as possible above the collection bag 5, making it easier for subsequent cleaning.

[0028] In this embodiment, when cylinder 3 is activated, the inner dust cover 42 moves closer to the outer dust cover 41. The bottom of the inner dust cover 42 pushes the opening cover 43 to the right, gradually opening the opening 421 of the outer dust cover 41. Simultaneously, dust on the opening cover 43 is pushed into the collection bag 5 by the scraper 44. When the opening 421 of the inner dust cover 42 coincides with the opening 421 of the outer dust cover 41, the dust blown and swept away falls into the collection bag 5 through the opening 421. When no winding is performed, the opening cover 43 closes the opening 421 of the outer dust cover 41 to prevent the collection bag 5 from being accidentally touched. This causes the dust in the collection bag 5 to drift into the dust cover. At the same time, the brush on the inner dust cover 42 sweeps the upper part of the elastic clip 2, and the dust falls into the collection bag 5 below. The brush can also press down on the top of the steel wire 91 in the V groove 21 to prevent the steel wire 91 from slipping off the V groove 21, further improving the stability of the clamping. The brush on the inner dust cover 42 moves with the inner dust cover 42 to sweep the elastic clip 2 within the range of the path. The swept dust falls to the lower part of the dust cover 4 and enters the collection bag 5, where the dust is collected and centrally processed.

[0029] Please refer to Figure 5 In one embodiment, valves are provided on both the first air intake pipe 11 and the second air intake pipe 12.

[0030] In this embodiment, by individually controlling the opening amount of the valve on the first air inlet pipe 11 or the second air inlet pipe 12, the gas flow rate entering the regulating cylinder 3 or the air outlet pipe can be adjusted. This facilitates the individual adjustment of the tightness of the elastic clamp 2 clamping the wire end and the individual adjustment of the air output of the air outlet. According to actual needs, the clamping device 6 can meet a variety of operating conditions.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A multi-wire cutting machine with wire end clamping function, comprising a cutting device, a wiring device, a gas device, a cooling device, a slurry tank, and a housing, characterized in that, A clamping device is provided on the wire cutting machine housing located on one side of the wiring device. The clamping device is detachably connected to the wire cutting machine by bolts. The clamping device includes a mandrel arranged in the horizontal direction, an elastic clamping piece arranged in the vertical direction on the mandrel, a cylinder for pushing the elastic clamping piece, and a dust cover for dust prevention. One end of the elastic clamping piece is fixedly connected to the mandrel, and the other end of the elastic clamping piece is slidably connected to the mandrel. The dust cover consists of an outer dust cover and an inner dust cover, and is located outside the elastic clamping piece. The outer dust cover is fixedly connected to the fixed side of the elastic clamping piece, and the inner dust cover is fixedly connected to the movable side of the elastic clamping piece. The outer dust cover is sleeved on the outside of the inner dust cover and slidably connected to it. The dust cover is provided with a window for inserting steel wire. The cylinder is located at one end of the mandrel, and the output end of the cylinder is fixedly connected to one side of the inner dust cover. The other end of the mandrel is provided with an air inlet. The air inlet is connected to a compressed air pipe through a first air inlet pipe. A valve is provided on the compressed air pipe, and the compressed air pipe is connected to the gas device on the wire cutting machine. The cylinder is connected to the compressed air pipe through a second air inlet pipe. An air outlet is provided on the elastic clamp at the steel wire clamping point. The air outlet and the air inlet are connected through an air outlet pipe. The inner dust cover has a brush for cleaning dust on its top surface, and the outer dust cover has a collection bag for collecting dust at its bottom. Both the inner and outer dust covers have openings for dust to fall into the collection bag. The collection bag is connected to the opening of the outer dust cover. The outer dust cover has an opening cover for covering the opening, a spring for resetting the opening cover, and a scraper for removing dust from the opening cover. One end of the spring is fixedly connected to the inner wall of the outer dust cover, and the other end of the spring is fixedly connected to one side of the opening cover. The opening cover is located above the opening and is slidably connected to the inner bottom surface of the outer dust cover. The scraper is located above the spring and the opening cover, and one end of the scraper is fixedly connected to the inner wall of the outer dust cover.

2. The multi-wire cutting machine with wire end clamping function as described in claim 1, characterized in that, The elastic clamping piece includes several truncated cones made of elastic material. These truncated cones are arranged on the mandrel in a horizontal axial direction. The truncated cones are connected by large circular faces to large circular faces and small circular faces to small circular faces. The clamping point for the steel wire is a V-groove formed between the small circular faces of two adjacent truncated cones.

3. The multi-wire cutting machine with wire end clamping function as described in claim 1, characterized in that, The elastic clip is hollow inside and is provided with a spring post to assist the elastic clip in rebounding.

4. The multi-wire cutting machine with wire end clamping function as described in claim 1, characterized in that, Both the first and second air intake pipes are equipped with valves.

5. The multi-wire cutting machine with wire end clamping function as described in claim 1, characterized in that, Two downward-sloping baffles are provided on the inner wall of the dust cover located below the elastic clip.

Images