High-efficiency positioning tool for precise punching of stainless steel mesh

Abstract

The utility model relates to stainless steel net production and processing technical field especially relates to a kind of high-efficiency positioning tool of stainless steel net precision punching, including machine base, fixedly connected with workstation on machine base, slidingly connected with placing plate on workstation, placing groove is opened in the outer wall of placing plate, and hole carrier plate is arranged in placing groove, the bottom of hole carrier plate is fixedly connected with silica gel buffer plate, and the lower array distribution of silica gel buffer plate has several support blocks, and the end of support block is connected with compression spring. The mechanical locking of the edge of stainless steel net plate is implemented by the clamping groove driven by positioning screw, the risk of stamping vibration displacement caused by only relying on self-weight in traditional is eliminated, the abutment plate is first pressed before punching, the micron gap between net plate and hole carrier plate is eliminated, the relative position precision of the edge of net plate and punching area is ensured, the punch directly contacts net plate, the instantaneous slip caused by vibration in the moment of punch contact is avoided.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel mesh production and processing technology, and in particular to a high-efficiency positioning tool for precision punching of stainless steel mesh. Background Technology

[0002] Stainless steel perforated mesh is a type of metal mesh made by CNC punching stainless steel plates according to certain hole patterns and molds. Due to its high-precision filtration and high-strength support characteristics, stainless steel mesh is widely used in aerospace, medical devices, precision manufacturing and other fields. The positioning accuracy, flatness of the mesh plate and the punching quality of the perforation process directly determine the product performance.

[0003] In existing devices for punching stainless steel mesh, such as the "punching device for processing stainless steel mesh" disclosed in patent announcement number CN 217550901U, the mesh plate is directly placed on a perforated carrier plate. Due to the lack of a targeted clamping and positioning structure, the mesh plate only adheres to the carrier plate by its own weight. During punching, it is prone to displacement deviation due to punching vibration, resulting in large tolerances for the punched holes. At the same time, the instantaneous punching force generated by the downward movement of the punch acts directly on the local area of ​​the mesh plate. Due to the lack of reverse elastic support, the mesh plate is easily subjected to impact and plastic deformation, resulting in an uneven mesh surface. As a result, the rigid carrier plate cannot dampen the vibration, leading to a high wire breakage rate and an increased scrap rate. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a highly efficient positioning fixture for precision punching of stainless steel mesh.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-efficiency positioning fixture for precision punching of stainless steel mesh includes a base, a worktable fixedly connected to the base, a placement plate slidably connected to the worktable, a placement groove formed on the outer wall of the placement plate, a perforated carrier plate placed in the placement groove, a silicone buffer plate fixedly connected to the bottom of the perforated carrier plate, and several support blocks arranged in an array below the silicone buffer plate. A compression spring is connected to the end of each support block, and one end of the compression spring is fixedly connected to the inner bottom of the placement groove through a spring washer. A limit ring is engaged with the side of the compression spring near the spring washer.

[0007] Preferably, the outer wall of the placement plate is fixedly connected to three sets of fixing seats. The outer wall of the fixing seat is provided with threaded holes, and a positioning screw is provided in the threaded holes. One end of the positioning screw extends to the top of the perforated carrier plate and is fixedly connected to a positioning plate. A snap-fit ​​groove is provided on one side of the positioning plate, and a drive handle is fixedly connected to the end of the positioning screw away from the positioning plate.

[0008] Preferably, two rectangular frames are fixedly connected to the bottom of the placement plate, and a connecting seat is fixedly connected to the bottom of the rectangular frames. A circular hole is opened in the middle of the connecting seat, and a threaded section is provided on the inner wall of the circular hole. A speed-regulating motor is provided on one side of the inner wall of the worktable, and a transmission screw is connected to the output end of the speed-regulating motor. The transmission screw passes through the circular hole and is connected to the inner wall of the other side of the worktable. A support seat for supporting the transmission screw is also fixedly connected to the inner bottom of the worktable.

[0009] Preferably, a stamping platform is fixedly connected to the middle of the outer wall of the workbench, a stamping cylinder is provided on the top of the stamping platform, the output end of the stamping cylinder extends into the interior of the stamping platform and is fixedly connected to a connecting plate, a support plate is fixedly connected to the middle of the workbench, a stamping plate is fixedly connected to the support plate, a plurality of through holes are provided on the outer wall of the stamping plate, and a telescopic connecting rod is connected between the connecting plate and the stamping plate.

[0010] Preferably, a protruding template is fixedly connected to the bottom of the connecting plate, and an abutment plate is connected to the bottom of the protruding template via a buffer spring. A punch is also fixedly connected to the bottom of the protruding template, and a shaft hole is provided on the abutment plate for the punch to pass through.

[0011] Preferably, the inner walls of the workbench are fixedly connected to sliding rails on both sides, and the bottom of the rectangular frame is fixedly connected to a sliding block that cooperates with the sliding rails.

[0012] Preferably, a control switch and an operation display screen are respectively provided on the base and on the side wall of the workbench, and a controller is provided inside the control switch.

[0013] The beneficial effects of this utility model are:

[0014] The stainless steel mesh plate edges are mechanically locked by a locking groove driven by a positioning screw, eliminating the risk of stamping vibration displacement caused by the traditional method of relying solely on self-weight bonding. Before punching, the abutment plate presses the mesh plate first, eliminating the micron-level gap between the mesh plate and the perforated carrier plate, ensuring that the punch contacts the mesh plate perpendicularly. This avoids instantaneous slippage caused by vibration at the moment of punch contact, ensuring the relative positional accuracy of the mesh plate edge and the punching area, avoiding assembly failure caused by hole offset due to positioning deviation, and reducing hole tolerance during punching.

[0015] By utilizing compression springs to absorb part of the peak punching force, silicone buffer plates to reduce high-frequency vibration, and pre-compression of the compression springs when the stainless steel mesh falls, the support blocks are ensured to fit snugly against the stainless steel mesh, preventing warping from the source. The support blocks and punches form an upper and lower top-to-lower constraint, providing rigid reaction force during punching and reducing the collapse area of ​​the stainless steel mesh. The array of support blocks distributes the concentrated load to adjacent support points, reducing local pressure and mesh tearing rate. Limiting retainers prevent compression springs from overloading and failing, thereby comprehensively improving the service life of the tooling and reducing the scrap rate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency positioning fixture for precision punching of stainless steel mesh proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the placement plate structure of a high-efficiency positioning fixture for precision punching of stainless steel mesh proposed in this utility model.

[0018] Figure 3 A schematic diagram of the connection structure between the perforated carrier plate and the silicone buffer plate of a high-efficiency positioning fixture for precision punching of stainless steel mesh proposed in this utility model.

[0019] Figure 4 This utility model proposes a high-efficiency positioning fixture for precision punching of stainless steel mesh. Figure 3 A magnified structural diagram of point A in the middle;

[0020] Figure 5 A schematic diagram of the connection structure between the worktable and the stamping cylinder of a high-efficiency positioning fixture for precision punching of stainless steel mesh proposed in this utility model.

[0021] Figure 6 This is a schematic diagram of the connection structure between the stamping cylinder and the abutment plate of a high-efficiency positioning fixture for precision punching of stainless steel mesh proposed in this utility model.

[0022] In the picture:

[0023] 1. Machine base; 2. Workbench; 3. Placement plate; 4. Perforated carrier plate; 401. Silicone buffer plate; 402. Support block; 403. Compression spring; 404. Spring washer; 405. Limiting ring; 5. Fixed seat; 501. Positioning screw; 502. Positioning plate; 503. Snap-fit ​​groove; 504. Drive handle; 6. Rectangular frame block; 601. Connecting seat; 602. Speed-regulating motor; 603. Transmission screw; 604. Support seat; 7. Stamping table; 701. Stamping cylinder; 702. Connecting plate; 703. Support plate; 704. Stamping plate; 705. Telescopic connecting rod; 8. Protruding template; 801. Buffer spring; 802. Abutment plate; 803. Punch; 9. Sliding rail; 901. Sliding block; 10. Control switch; 11. Operation display screen. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0027] Example:

[0028] Reference Figures 1-6 A high-efficiency positioning fixture for precision punching of stainless steel mesh includes a base 1, a worktable 2 fixedly connected to the base 1, a placement plate 3 slidably connected to the worktable 2, a placement groove on the outer wall of the placement plate 3, a perforated carrier plate 4 placed in the placement groove, a silicone buffer plate 401 fixedly connected to the bottom of the perforated carrier plate 4, several support blocks 402 arranged in an array below the silicone buffer plate 401, a compression spring 403 connected to the end of the support block 402, one end of the compression spring 403 being fixedly connected to the inner bottom of the placement groove through a spring washer 404, and a limit ring 405 engaging the side of the compression spring 403 near the spring washer 404.

[0029] Three sets of fixing seats 5 are fixedly connected to the outer wall of the placement plate 3. The outer wall of the fixing seat 5 is provided with threaded holes. A positioning screw 501 is provided in the threaded holes. One end of the positioning screw 501 extends to the top of the perforated carrier plate 4 and is fixedly connected to a positioning plate 502. A snap-fit ​​groove 503 is provided on one side of the positioning plate 502. A drive handle 504 is fixedly connected to the end of the positioning screw 501 away from the positioning plate 502.

[0030] Two rectangular frames 6 are fixedly connected to the bottom of the placement plate 3. A connecting seat 601 is fixedly connected to the bottom of the rectangular frame 6. A circular hole is opened in the middle of the connecting seat 601. A threaded section is provided on the inner wall of the circular hole. A speed-regulating motor 602 is provided on one side of the inner wall of the worktable 2. A transmission screw 603 is connected to the output end of the speed-regulating motor 602. The transmission screw 603 passes through the circular hole and is connected to the inner wall of the other side of the worktable 2. A support seat 604 that can support the transmission screw 603 is also fixedly connected to the bottom of the inner wall of the worktable 2.

[0031] A stamping table 7 is fixedly connected to the middle of the outer wall of the workbench 2. A stamping cylinder 701 is provided on the top of the outer side of the stamping table 7. The output end of the stamping cylinder 701 extends into the interior of the stamping table 7 and is fixedly connected to a connecting plate 702. A support plate 703 is fixedly connected to the middle of the workbench 2. A stamping plate 704 is fixedly connected to the support plate 703. Several through holes are opened on the outer wall of the stamping plate 704. A telescopic connecting rod 705 is connected between the connecting plate 702 and the stamping plate 704.

[0032] A protruding template 8 is fixedly connected to the bottom of the connecting plate 702. The bottom of the protruding template 8 is connected to an abutment plate 802 via a buffer spring 801. A punch 803 is also fixedly connected to the bottom of the protruding template 8. A shaft hole is provided on the abutment plate 802 for the punch 803 to pass through.

[0033] The inner walls of the workbench 2 are fixedly connected to the two sides of the sliding horizontal rails 9, and the bottom of the rectangular frame block 6 is fixedly connected to the sliding block 901 that cooperates with the sliding horizontal rails 9.

[0034] A control switch 10 and an operation display screen 11 are respectively installed on the base 1 and on the side wall of the workbench 2. The control switch 10 contains a controller.

[0035] In this embodiment, when punching the stainless steel mesh, the stainless steel mesh is first placed on the perforated carrier plate 4. Then, the drive handle 504 is manually rotated in sequence. When the drive handle 504 rotates, it drives the positioning screw 501 to move downward. When the positioning screw 501 moves downward, it drives the positioning clamping plate 502 to move downward until the locking groove 503 on one side of the positioning clamping plate 502 is engaged with the edge of the stainless steel mesh, thereby clamping the edge of the stainless steel mesh and preventing displacement during subsequent punching. After the stainless steel mesh is positioned and clamped on the perforated carrier plate 4, it falls naturally onto the silicone buffer plate 401 by gravity. At this time, the compression spring 403 is slightly pre-compressed by the weight of the stainless steel mesh. The pre-tightening force of the compression spring 403 ensures that the surface of the stainless steel mesh is flat and without warping, providing a stable reference for subsequent punching.

[0036] Specifically, after the stainless steel mesh is clamped, the control switch 10 is operated to start the speed-regulating motor 602. The speed-regulating motor 602 drives the transmission screw 603 to rotate. When the transmission screw 603 rotates, it engages with the threaded section of the circular hole in the connecting seat 601, causing the connecting seat 601 to move axially along the trajectory of the transmission screw 603. As the connecting seat 601 moves, it drives the rectangular frame block 6 and the placement plate 3 to gradually move towards the center of the worktable 2. When the placement plate 3 moves the perforated carrier plate 4 and the stainless steel mesh to the stamping table... When the inside of 7 is above the stamping plate 704, the stamping cylinder 701 is activated. When the stamping cylinder 701 runs, it sequentially drives the connecting plate 702, the protruding plate 8, the abutment plate 802 and the punch 803 to descend. When the abutment plate 802 descends and moves to the surface of the stainless steel mesh, the abutment plate 802 first abuts against the surface of the stainless steel mesh, thereby pressing the stainless steel mesh tightly onto the silicone buffer plate 401, eliminating the small gap between the stainless steel mesh and the perforated carrier plate 4, and avoiding the instantaneous displacement of the stainless steel mesh caused by vibration when the punch 803 descends.

[0037] Furthermore, when the abutting plate 802 abuts against the surface of the stainless steel mesh, the continuous operation of the stamping cylinder 701 drives the convex plate 8 to descend. When the convex plate 8 descends, it compresses the buffer spring 801. When the buffer spring 801 is compressed, the punch 803 passes through the shaft hole of the abutting plate 802. At this time, the punch 803 continues to press down to punch holes in the stainless steel mesh on the perforated carrier plate 4. The punching force generated by the punch 803 as it descends is transmitted to the stainless steel mesh, causing the stainless steel mesh to sink locally under force, pushing the support block 402 to move down synchronously. When the support block 402 moves down, it compresses the compression spring 403. At this time, the compression spring 403 absorbs part of the impact energy through elastic deformation, and the silicone buffer plate 401 further attenuates the high-frequency vibration. To prevent plastic deformation of the stainless steel mesh due to instantaneous impact, when the punch 803 passes through the hole in the perforated carrier plate 4, the punching process of the stainless steel mesh is completed. At this time, the support block 402 and the compression spring 403 provide rigid reaction force, forming an upper and lower constraint with the punch 803, ensuring that there are no burrs or collapses at the punching edge. The array of support blocks 402 disperses the concentrated force to several adjacent support points, avoiding tearing of the stainless steel mesh caused by excessive force at a single point, and preventing local dents in the stainless steel mesh. During the compression of the compression spring 403, the limiting ring 405 limits the maximum compression of the compression spring 403, preventing the compression spring 403 from losing its elasticity due to excessive compression.

[0038] Furthermore, after the punching is completed, the punching cylinder 701 is restarted, causing the abutment plate 802 and the punch 803 to move upward and away from the stainless steel mesh plate. At this time, the compression spring 403 releases its elastic potential energy, pushing the support block 402 to gradually return to its initial position, preparing for the next punching.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency positioning fixture for precision punching of stainless steel mesh, comprising a base (1), characterized in that, A workbench (2) is fixedly connected to the base (1), and a placement plate (3) is slidably connected to the workbench (2). A placement groove is provided on the outer wall of the placement plate (3), and a perforated carrier plate (4) is provided in the placement groove. A silicone buffer plate (401) is fixedly connected to the bottom of the perforated carrier plate (4). Several support blocks (402) are arranged in an array below the silicone buffer plate (401). A compression spring (403) is connected to the end of the support block (402). One end of the compression spring (403) is fixedly connected to the bottom of the placement groove through a spring washer (404). A limit ring (405) is engaged on the side of the compression spring (403) near the spring washer (404).

2. The high-efficiency positioning fixture for precision punching of stainless steel mesh according to claim 1, characterized in that, The outer wall of the placement plate (3) is fixedly connected to three sets of fixing seats (5). The outer wall of the fixing seat (5) is provided with threaded holes. A positioning screw (501) is provided in the threaded holes. One end of the positioning screw (501) extends to the top of the perforated carrier plate (4) and is fixedly connected to a positioning plate (502). A snap-fit ​​groove (503) is provided on one side of the positioning plate (502). A drive handle (504) is fixedly connected to the end of the positioning screw (501) away from the positioning plate (502).

3. The high-efficiency positioning fixture for precision punching of stainless steel mesh according to claim 1, characterized in that, Two rectangular frames (6) are fixedly connected to the bottom of the placement plate (3). A connecting seat (601) is fixedly connected to the bottom of the rectangular frame (6). A circular hole is opened in the middle of the connecting seat (601). A threaded section is provided on the inner wall of the circular hole. A speed-regulating motor (602) is provided on one side of the inner wall of the workbench (2). A transmission screw (603) is connected to the output end of the speed-regulating motor (602). The transmission screw (603) passes through the circular hole and is connected to the inner wall of the other side of the workbench (2). A support seat (604) that can support the transmission screw (603) is also fixedly connected to the inner bottom of the workbench (2).

4. The high-efficiency positioning fixture for precision punching of stainless steel mesh according to claim 1, characterized in that, A stamping table (7) is fixedly connected to the middle of the outer wall of the workbench (2). A stamping cylinder (701) is provided on the top of the outer side of the stamping table (7). The output end of the stamping cylinder (701) extends into the interior of the stamping table (7) and is fixedly connected to a connecting plate (702). A support plate (703) is fixedly connected to the middle of the workbench (2). A stamping plate (704) is fixedly connected to the support plate (703). Several through holes are opened on the outer wall of the stamping plate (704). A telescopic connecting rod (705) is connected between the connecting plate (702) and the stamping plate (704).

5. The high-efficiency positioning fixture for precision punching of stainless steel mesh according to claim 4, characterized in that, The bottom of the connecting plate (702) is fixedly connected to a protruding template (8), and the bottom of the protruding template (8) is connected to an abutment plate (802) via a buffer spring (801). The bottom of the protruding template (8) is also fixedly connected to a punch (803), and the abutment plate (802) has a shaft hole through which the punch (803) can pass.

6. The high-efficiency positioning fixture for precision punching of stainless steel mesh according to claim 3, characterized in that, The inner walls of the workbench (2) are fixedly connected to sliding rails (9) on both sides, and the bottom of the rectangular frame (6) is fixedly connected to a sliding block (901) that cooperates with the sliding rails (9).

7. The high-efficiency positioning fixture for precision punching of stainless steel mesh according to claim 1, characterized in that, A control switch (10) and an operation display screen (11) are respectively provided on the base (1) and on the side wall of the workbench (2). The control switch (10) contains a controller.

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