A laser cutting machine clamp with an anti-scratch mechanism

Abstract

This invention provides a laser cutting machine fixture with an anti-scratch mechanism, relating to the field of laser cutting processing technology. The laser cutting machine fixture with an anti-scratch mechanism includes a housing, within which a cleaning component, an electric guide rail, a guide groove, and a rack are disposed. The cleaning component includes a connecting frame, a mounting frame, rollers, a spur gear, a sprocket, a transmission chain, a mounting column, an inclined scraper, and a collection box. The connecting frame is driven to move by the electric guide rail, thereby moving the mounting frame. Simultaneously, the rollers roll within the guide groove, causing the mounting frame to move upwards relative to the connecting frame, and the spur gear meshes with the rack. Driven by the sprocket and transmission chain, the mounting column begins to rotate. The inclined scraper on the circumference of the mounting column scrapes away metal slag from the grid plate. The rotating inclined scraper effectively pushes the scraped metal slag, causing it to fall into the collection box, thus achieving efficient cleaning of metal slag from the grid plate and ensuring the surface quality of the processed product.

Description

Technical Field

[0001] This invention relates to the field of laser cutting processing technology, specifically to a laser cutting machine fixture with an anti-scratch mechanism. Background Technology

[0002] Laser cutting is a processing method that uses a high-energy-density laser beam as a heat source to cut materials. In laser cutting, the laser cutting machine fixture plays a crucial role. It can stably fix the workpiece on the worktable, thereby ensuring cutting accuracy. When cutting precision parts such as metal casings or circuit boards of electronic devices, these parts have extremely high requirements for surface quality and cannot have scratches. Fixtures with anti-scratch mechanisms can not only ensure that the parts are firmly fixed during the cutting process, but also protect the surface of the parts from damage, thereby ensuring the appearance and performance of the product.

[0003] During laser cutting of metal sheets, some molten metal is blown away from the cutting area by the force of the assist gas (such as oxygen or nitrogen). However, this molten metal splashes onto the support grid below the metal sheet, where it cools and solidifies, adhering to the grid. Because these solidified metal slags have a rough surface, they easily scratch the surface of the metal sheet, negatively impacting the product's processing quality. Currently, manual cleaning is commonly used. However, this method has many drawbacks. Its cleaning efficiency is very slow, causing the laser cutting machine to be idle for extended periods, unable to operate normally. Furthermore, if the cleaning frequency is fixed, it is difficult to promptly remove the metal slag adhering to the support grid, thus affecting the smoothness of the entire processing flow and the stability of product quality.

[0004] To address this, we have developed a new type of laser cutting machine fixture with an anti-scratch mechanism. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a laser cutting machine fixture with an anti-scratch mechanism, which solves the problems in existing technologies where the low efficiency of manual cleaning of the support fence leads to prolonged downtime of the laser cutting machine and the impact on product quality due to untimely cleaning.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution: a laser cutting machine fixture with an anti-scratch mechanism, comprising a housing, wherein a clamping assembly is fixedly installed inside the housing, the clamping assembly comprising two crossbeams fixedly installed inside the housing, and a plurality of fence plates are fixedly installed in a linear array between the two crossbeams;

[0009] A cleaning component is fixedly installed inside the housing below the clamping assembly. The cleaning component includes a mounting frame. Several mounting columns are rotatably mounted in a linear array on the top of the mounting frame. Several oblique scrapers are fixedly mounted in a circular array on the sides of the mounting columns. The oblique scrapers on the sides of adjacent mounting columns have opposite inclination directions. A collection box is fixedly embedded in the top of the mounting frame.

[0010] Preferably, the cleaning assembly further includes electric guide rails fixedly installed on two opposite inner sides of the housing, a connecting frame fixedly installed between the two electric guide rails, and two symmetrical connecting columns fixedly connected to the bottom of the mounting frame, both of which slide in cooperation with the connecting frame.

[0011] Preferably, the mounting frame is fixedly connected to two outer sides with connecting rods, one end of which is rotatably fitted with a roller, and the housing is fixedly installed with guide grooves on two inner sides above the electric guide rail, the guide grooves slidingly fitting with the rollers.

[0012] Preferably, the top of the mounting frame is rotatably fitted with several sprockets, the mounting column is fixedly connected to the sprockets, and a transmission chain is sleeved on the circumferential side of the several sprockets.

[0013] Preferably, a spur gear is fixedly connected to one end of each of the two sprockets, and a rack is fixedly installed on the two inner sides of the housing, the rack meshing with the spur gear.

[0014] Preferably, a screw is rotatably fitted inside the crossbeam, and the screw has a first external thread and a second external thread respectively on its circumferential side, with the first external thread and the second external thread having opposite helical directions.

[0015] Preferably, a groove is provided on the top outer side of the crossbeam, and two symmetrical connecting plates are threadedly connected to the peripheral side of the screw, with the connecting plates slidingly engaging with the groove.

[0016] Preferably, a side plate is fixedly connected to one side of the connecting plate, a trapezoidal slot is opened through one side of the side plate, a trapezoidal plate is slidably fitted in the trapezoidal slot, a clamping plate is fixedly connected between the two trapezoidal plates, a buffer plate is fixedly installed on one side of the clamping plate, and a spring is fixedly connected between the clamping plate and the connecting plate.

[0017] Preferably, a first bevel gear is fixedly connected to one end of the screw, a second bevel gear is rotatably fitted to the circumferential side of the first bevel gear, a rotating shaft is fixedly connected to one end of the second bevel gear, a dual-axis motor is fixedly connected between the two rotating shafts, and the dual-axis motor is fixedly connected to the housing.

[0018] (III) Beneficial Effects

[0019] This invention provides a laser cutting machine fixture with an anti-scratch mechanism, which has the following beneficial effects:

[0020] 1. This laser cutting machine fixture with anti-scratch mechanism, by setting a polyurethane buffer plate on the clamping surface of the clamping plate, avoids the clamping plate directly clamping the two sides of the metal plate, which plays a certain buffering role, while also increasing friction and improving clamping stability. In addition, by setting a spring between the clamping plate and the connecting plate, the metal plate can be deformed due to excessive clamping force of the clamping plate.

[0021] 2. This laser cutting machine fixture with an anti-scratch mechanism, through the design of a cleaning component, enables the electric guide rail to drive the connecting frame to move, thereby moving the mounting frame. Simultaneously, rollers roll within the guide groove, causing the mounting frame to move upwards relative to the connecting frame. This allows the spur gear and rack to mesh, and through the transmission chain via sprockets, the mounting columns begin to rotate, with adjacent mounting columns rotating in opposite directions. This utilizes the inclined scrapers on the periphery of the mounting columns to scrape away the metal slag adhering to the grid plate. Furthermore, the inclined scrapers on the periphery of adjacent mounting columns are tilted in opposite directions, ensuring that the scraped metal slag falls smoothly into the collection box under the pushing force of the inclined scrapers. Through this series of coordinated movements, efficient cleaning of the metal slag on the grid plate is achieved, effectively preventing scratches on the metal plate surface and ensuring the surface quality of the product during laser cutting. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a top view of the present invention;

[0024] Figure 3 This is a sectional side view of the present invention;

[0025] Figure 4 A structural diagram of the cleaning component;

[0026] Figure 5 This is a schematic diagram of the sprocket, chain, and mounting post.

[0027] Figure 6 This is a schematic diagram of the clamping assembly.

[0028] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0029] Figure 8 This is a schematic diagram of the screw structure.

[0030] The components are as follows: 1. Housing; 2. Clamping assembly; 3. Crossbeam; 4. Fence plate; 5. Cleaning assembly; 6. Mounting frame; 7. Mounting column; 8. Slanted scraper; 9. Collection box; 10. Electric guide rail; 11. Connecting frame; 12. Connecting column; 13. Connecting rod; 14. Roller; 15. Guide groove; 16. Sprocket; 17. Transmission chain; 18. Spur gear; 19. Rack; 20. Screw; 21. First external thread; 22. Second external thread; 23. Slide groove; 24. Connecting plate; 25. Side plate; 26. Trapezoidal slot; 27. Trapezoidal plate; 28. Clamping plate; 29. ​​Spring; 30. First bevel gear; 31. Second bevel gear; 32. Rotating shaft; 33. Dual-axis motor; 34. Buffer plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Examples, such as Figure 1 - Figure 8 As shown, this embodiment of the invention provides a laser cutting machine fixture with an anti-scratch mechanism, including a housing 1, a clamping assembly 2 fixedly installed inside the housing 1, and a cleaning assembly 5 fixedly installed below the clamping assembly 2 inside the housing 1.

[0033] Specifically, the clamping assembly 2 includes two crossbeams 3 fixedly installed inside the housing 1, and several fence plates 4 are fixedly installed in a linear array between the two crossbeams 3, which provide support for the bottom of the metal plate.

[0034] A screw 20 is rotatably fitted inside the crossbeam 3. The screw 20 has a first external thread 21 and a second external thread 22 on its circumferential side. The helical directions of the first external thread 21 and the second external thread 22 are opposite. A groove 23 is provided on the top of the crossbeam 3. The groove 23 provides guidance and constraint for the movement of subsequent components. Two symmetrical connecting plates 24 are threadedly connected to the circumferential side of the screw 20. The first external thread 21 and the second external thread 22 are respectively matched with the threaded holes on the two connecting plates 24. The connecting plates 24 are slidably fitted with the groove 23. The two connecting plates 24 can be slidably moved within the groove 23 by rotating the screw 20, so that the two connecting plates 24 move away from or closer to each other, thereby adjusting the distance between the two connecting plates 24.

[0035] A side plate 25 is fixedly connected to one side of the connecting plate 24. A trapezoidal slot 26 is formed through one side of the side plate 25, and a trapezoidal plate 27 is slidably fitted within the trapezoidal slot 26. A clamping plate 28 is fixedly connected between the two trapezoidal plates 27. A buffer plate 34 is fixedly installed on one side of the clamping plate 28. The buffer plate 34 can be made of polyurethane material. In actual operation, when the clamping plate 28 clamps the metal plate, the buffer plate 34 effectively buffers the clamping force applied by the clamping plate 28 to the metal plate due to its elastic properties, avoiding damage to the metal plate due to excessive clamping force and ensuring the integrity of the metal plate during the clamping process. At the same time, the surface of the polyurethane material has a certain roughness, which is a special feature. The buffer plate 34 increases the friction between the two when it comes into contact with the metal plate, thereby significantly improving the stability of the clamping and effectively preventing the metal plate from shifting or shaking during laser cutting. A spring 29 is fixedly connected between the clamping plate 28 and the connecting plate 24. When the connecting plate 24 slides in the groove 23 on the top of the crossbeam 3 and moves closer to each other, the two clamping plates 28 gradually move closer to the metal plate. As the clamping action proceeds, when the two buffer plates 34 make close contact with the two sides of the metal plate and begin to apply clamping force, if the two clamping plates 28 move excessively, the spring 29 will be compressed, thereby preventing the clamping plates 28 from excessively squeezing the two sides of the metal plate, which would cause the metal plate to bend and deform.

[0036] A first bevel gear 30 is fixedly connected to one end of the screw 20. A second bevel gear 31 is rotatably fitted to the circumferential side of the first bevel gear 30. A rotating shaft 32 is fixedly connected to one end of the second bevel gear 31. A dual-axis motor 33 is fixedly connected between the two rotating shafts 32. The dual-axis motor 33 is fixedly connected to the housing 1. By starting the dual-axis motor 33, the two rotating shafts 32 are driven to rotate. The two rotating shafts 32 drive the second bevel gear 31 to rotate. The second bevel gear 31 then drives the first bevel gear 30 to rotate, thereby controlling the rotation of the two screws 20.

[0037] Specifically, the cleaning component 5 includes a mounting frame 6. Several mounting columns 7 are linearly arrayed and rotated around the top of the mounting frame 6. Several inclined scrapers 8 are fixedly installed in a circular array around the sides of the mounting columns 7. The inclined scrapers 8 on the sides of adjacent mounting columns 7 are inclined in opposite directions. A collection box 9 is fixedly embedded in the top of the mounting frame 6. By controlling the two mounting columns 7 to rotate on both sides of the fence plate 4, the inclined scrapers 8 on the sides of the mounting columns 7 scrape away the metal slag attached to the fence plate 4. At the same time, the inclined scrapers 8 can push the scraped metal slag down and fall smoothly into the collection box 9 along the inclined direction of the scrapers 8.

[0038] The cleaning component 5 also includes electric guide rails 10 fixedly installed on the two opposite inner sides of the housing 1. A connecting frame 11 is fixedly installed between the two electric guide rails 10. Two symmetrical connecting posts 12 are fixedly connected to the bottom of the mounting frame 6. Both connecting posts 12 are slidably engaged with the connecting frame 11. The electric guide rails 10 drive the connecting frame 11 to move to one side, and the connecting frame 11 drives the mounting frame 6 to move to one side through the two connecting posts 12. This results in mounting posts 7 being distributed on both sides of each fence panel 4. When the mounting posts 7 rotate, the inclined scraper 8 on the periphery of the mounting posts 7 can scrape off the metal shavings attached to both sides of the fence panel 4.

[0039] The mounting frame 6 is fixedly connected to two outer sides with connecting rods 13. One end of the connecting rod 13 is rotatably fitted with a roller 14. The housing 1 is fixedly installed with guide grooves 15 on two inner sides above the electric guide rail 10. The guide grooves 15 and rollers 14 are slidably fitted. When the mounting frame 6 moves to one side, the rollers 14 on both sides of the mounting frame 6 will roll in the guide grooves 15 at the same time. When the rollers 14 roll from the horizontal groove to the inclined groove in the guide groove 15, the rollers 14 will start to roll obliquely upward. At the same time, the rollers 14 drive the mounting frame 6 to move obliquely upward through the connecting rods 13. The two connecting posts 12 below the mounting frame 6 will slide in the connecting frame 11, so that the mounting posts 7 can avoid the crossbeam 3 and avoid the crossbeam 3 interfering with the cleaning action.

[0040] The top of the mounting frame 6 is fitted with several sprockets 16 that rotate. The mounting post 7 is fixedly connected to the sprockets 16. A transmission chain 17 is sleeved on the circumference of the sprockets 16. Figure 5 As shown, when the entire sprocket and chain system begins to move, for a linearly arranged sprocket group, the rotation directions of two adjacent sprockets 16 are opposite. A spur gear 18 is fixedly connected to one end of each sprocket 16. This spur gear 18 acts as the driving element to drive the sprocket and chain system. A rack 19 is fixedly mounted on the two inner sides of the spur gear 18 housing 1. The rack 19 meshes with the spur gear 18. When the roller 14 rolls from the inclined groove in the guide groove 15 to another horizontal groove, the mounting frame 6 continues to move to one side. Simultaneously, mounting posts 7 are distributed on both sides of each fence plate 4, and the mounting frame 6 continues to move... When moving to one side, the spur gear 18 will begin to mesh with the rack 19. Since the rack 19 is fixed, this will cause the spur gear 18 to start rotating. The spur gear 18 will then drive the sprocket 16 fixedly connected to it to rotate. The sprocket 16 will then drive the transmission chain 17 to start moving, thereby driving the other sprockets 16 to rotate, and causing the mounting post 7 fixedly connected to the sprocket 16 to start rotating. Since the rotation directions of the two adjacent mounting posts 7 are opposite, the inclined scraper 8 on the periphery of the two adjacent mounting posts 7 can more effectively scrape off the metal shavings attached to the fence plate 4 and guide these metal shavings to fall into the collection box 9.

[0041] Working principle: When it is necessary to fix the metal plate to be processed, first place the metal plate on the fence plate 4, then start the dual-shaft motor 33, so that the two rotating shafts 32 start to rotate. The two rotating shafts 32 drive the second bevel gear 31 to rotate, the second bevel gear 31 drives the first bevel gear 30 to rotate, the first bevel gear 30 drives the screw 20 to rotate, and the screw 20 drives the two connecting plates 24 to slide in the slide groove 23, so that the two connecting plates 24 move closer to each other, thereby causing the clamping plate 28 to move closer to both sides of the metal plate and clamp and fix the metal plate on both sides.

[0042] When it is necessary to clean the metal shavings attached to the fence panel 4, the dual-axis motor 33 is started and reversed, causing the two clamping plates 28 to move away from each other until they return to their initial position. The electric guide rail 10 then moves the connecting frame 11 to one side, which in turn moves the mounting frame 6 to one side via the two connecting posts 12. Simultaneously, the rollers 14 on both sides of the mounting frame 6 begin to roll within the guide groove 15. When the rollers 14 roll from the horizontal groove to the inclined groove in the guide groove 15, they begin to roll diagonally upwards. At the same time, the rollers 14 move the mounting frame 6 diagonally upwards via the connecting rod 13. Simultaneously, the two connecting posts 12 below the mounting frame 6 slide within the connecting frame 11. When the rollers 14 roll from the inclined groove to another horizontal groove in the guide groove 15, the mounting frame... 6 then begins to move to one side. At this time, mounting posts 7 are distributed on both sides of the fence plate 4, and the spur gear 18 begins to mesh with the rack 19, causing the spur gear 18 to start rotating. The spur gear 18 will drive the sprocket 16 fixedly connected to it to rotate, and the sprocket 16 will drive the transmission chain 17 to start moving, thereby driving the other sprockets 16 to rotate, and causing the mounting posts 7 to start rotating. Since the rotation directions of two adjacent mounting posts 7 are opposite, and the inclined scrapers 8 on the periphery of two adjacent mounting posts 7 are inclined in opposite directions, the inclined scrapers 8 on the periphery of the mounting posts 7 can more effectively scrape off the metal slag attached to the fence plate 4. Under the pushing action of the inclined scrapers 8, the scraped metal slag falls smoothly into the collection box 9 along the inclined direction of the inclined scrapers 8.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting machine fixture with an anti-scratch mechanism, comprising a housing (1), characterized in that: A clamping assembly (2) is fixedly installed inside the housing (1). The clamping assembly (2) includes two crossbeams (3) fixedly installed inside the housing (1). Several fence plates (4) are fixedly installed in a linear array between the two crossbeams (3). A cleaning component (5) is fixedly installed inside the housing (1) below the clamping component (2). The cleaning component (5) includes a mounting frame (6). A number of mounting posts (7) are rotatably mounted in a linear array on the top of the mounting frame (6). A number of oblique scrapers (8) are fixedly mounted in a circular array on the sides of the mounting posts (7). The oblique scrapers (8) on the sides of two adjacent mounting posts (7) are inclined in opposite directions. A collection box (9) is fixedly embedded on the top of the mounting frame (6). The cleaning component (5) also includes electric guide rails (10) fixedly installed on the two opposite inner sides of the housing (1), a connecting frame (11) fixedly installed between the two electric guide rails (10), and two symmetrical connecting columns (12) fixedly connected to the bottom of the mounting frame (6), and both connecting columns (12) slidingly engaging with the connecting frame (11). The crossbeam (3) is rotatably fitted with a screw (20). The screw (20) has a first external thread (21) and a second external thread (22) respectively on its circumferential side. The first external thread (21) and the second external thread (22) have opposite helical directions. The top of the crossbeam (3) has a sliding groove (23). The screw (20) has two symmetrical connecting plates (24) threadedly connected to its circumferential side. The connecting plates (24) and the sliding groove (23) are in sliding fit. A side plate (25) is fixedly connected to one side of the connecting plate (24). A trapezoidal slot (26) is provided through one side of the side plate (25). A trapezoidal plate (27) is slidably fitted in the trapezoidal slot (26). A clamping plate (28) is fixedly connected between the two trapezoidal plates (27). A buffer plate (34) is fixedly installed on one side of the clamping plate (28). A spring (29) is fixedly connected between the clamping plate (28) and the connecting plate (24). One end of the screw (20) is fixedly connected to a first bevel gear (30), and the circumferential side of the first bevel gear (30) is rotatably fitted with a second bevel gear (31). One end of the second bevel gear (31) is fixedly connected to a rotating shaft (32), and a dual-axis motor (33) is fixedly connected between the two rotating shafts (32). The dual-axis motor (33) is fixedly connected to the housing (1).

2. A laser cutting machine fixture with an anti-scratch mechanism according to claim 1, characterized in that: The mounting frame (6) is fixedly connected to two outer sides with connecting rods (13), and one end of the connecting rod (13) is rotatably fitted with a roller (14). The housing (1) is fixedly installed with guide grooves (15) on two inner sides above the electric guide rail (10), and the guide grooves (15) are slidably fitted with the rollers (14).

3. A laser cutting machine fixture with an anti-scratch mechanism according to claim 2, characterized in that: The top of the mounting frame (6) is rotatably fitted with several sprockets (16), the mounting column (7) is fixedly connected to the sprockets (16), and a transmission chain (17) is sleeved on the circumferential side of several sprockets (16).

4. A laser cutting machine fixture with an anti-scratch mechanism according to claim 3, characterized in that: One end of each of the two sprockets (16) is fixedly connected to a spur gear (18), and a rack (19) is fixedly installed on the two inner sides of the housing (1), and the rack (19) meshes with the spur gear (18).

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