A knife grinding mold

Abstract

This application discloses a grinding mold, relating to the field of tool processing equipment, including a mounting base and a worktable mounted on the mounting base. The mounting base is used to fix the grinding equipment. The worktable includes a base and a movable base. The base is mounted on the mounting base, and the movable base is slidably mounted on the base. A clamp is slidably connected to the movable base for mounting the tool. The clamp is used to mount the tool. The base has a guide groove adapted to the cutting edge path direction of the tool. The clamp is provided with a guide rod for inserting into the guide groove. The base has a drive assembly for driving the movable base to slide. The movable base slides so that the cutting edge sidewall of the tool mounted on the clamp can sequentially contact the outer wall of the grinding wheel of the grinding equipment along its own path direction. Through the cooperation of the guide groove and the guide rod, this application enables the clamp to generate relative movement while following the movement of the movable base, which facilitates the grinding wheel to completely grind irregularly shaped cutting edges.

Description

Technical Field

[0001] This application relates to the field of cutting tool processing equipment, and in particular to a grinding die. Background Technology

[0002] Some electronic scales are equipped with a label cutter. After the scale weighs the goods, it will dispense a label of a specific size, which is then cut by the cutter.

[0003] Cutting tools can be categorized into straight-edged and V-edged blades. Over time, these tools become dull and require sharpening. Sharpening equipment typically uses a grinding wheel. In operation, the tool is mounted on a mold with its cutting edge against the outer wall of the grinding wheel. A drive mechanism on the mold moves the tool horizontally, and a motor rotates the grinding wheel, thus sharpening the straight-edged blade. However, for V-edged blades, the blade's direction changes constantly during sharpening, preventing some of the cutting edge from contacting the outer wall of the grinding wheel. This results in incomplete sharpening of the V-edged blade, requiring secondary processing, which is more complicated. Summary of the Invention

[0004] To facilitate the sharpening of irregularly shaped blades (such as V-shaped blades) by the sharpening wheel, this application provides a sharpening mold.

[0005] This application provides a grinding mold, which adopts the following technical solution:

[0006] A sharpening mold includes a mounting base and a worktable mounted on the mounting base. The mounting base is used to fix the tool to a sharpening device. The worktable includes a base and a movable base. The base is mounted on the mounting base, and the movable base is slidably mounted on the base. A clamping platform is slidably connected to the movable base for mounting a cutting tool. The base has a guide groove adapted to the cutting edge path direction of the cutting tool. The clamping platform has a guide rod for inserting into the guide groove. The base has a driving assembly for driving the movable base to slide. The movable base slides so that the cutting edge sidewall of the cutting tool mounted on the clamping platform can sequentially contact the outer wall of the sharpening wheel of the sharpening device along its own path direction.

[0007] By adopting the above technical solution, when grinding irregularly shaped cutting edges, such as V-shaped cutting edges, the cutting edge is first installed on the clamping table, then the guide rod is inserted into the guide groove, and then the moving seat is driven to slide by the drive assembly. Due to the cooperation between the guide rod and the guide groove, the clamping table can move with the moving seat while also making relative movement itself. The direction of the guide groove is adapted to the direction of the cutting edge of the tool, so that the cutting edge can always be in contact with the outer wall of the grinding wheel during the process of passing through the grinding wheel, so that the grinding wheel can grind the cutting edge. The whole process is simple and convenient. No secondary processing is required for grinding irregularly shaped cutting edges, which makes it easy for the grinding wheel to completely grind irregularly shaped cutting edges.

[0008] Optionally, the guide grooves may be multiple and have different shapes.

[0009] By adopting the above technical solution and setting multiple guide grooves of different shapes, different shaped cutting edges can be processed on a single mold, enhancing the mold's adaptability.

[0010] Optionally, the guide rod is provided as one, and the clamping platform has multiple through holes for the guide rod to pass through and be inserted into the guide groove. The guide rod can pass through different through holes to be inserted into different guide grooves.

[0011] By adopting the above technical solution, for different shaped cutting edges, the corresponding guide groove is selected, and then the guide rod is inserted into the corresponding guide groove through the corresponding hole to realize the guiding movement of the clamp. Different shaped cutting edges can be processed through a single guide rod.

[0012] Optionally, there are multiple guide rods, and each guide rod corresponds to a guide groove. The guide rods can move on the clamping platform, and the movement of the guide rods can insert into or disengage from the guide grooves.

[0013] By adopting the above technical solution, a technical solution is provided to achieve the processing of cutting edges of different shapes using multiple guide rods. During the processing of the cutting edge, guide rods are inserted into the corresponding guide grooves, and other guide rods are disengaged from the corresponding guide grooves.

[0014] Optionally, the clamping platform is provided with a positioning mechanism for positioning the cutting tool.

[0015] By adopting the above technical solution, the positioning mechanism can ensure the stability of the cutting tool and prevent the cutting edge from shaking, thus affecting the processing effect.

[0016] Optionally, the positioning mechanism includes a clamping assembly, which includes a clamping block and a locking bolt. The clamping block has a slot, and the locking bolt passes through the slot and is threaded onto the clamping block. The cutting tool is limited between the clamping block and the clamping table.

[0017] By adopting the above technical solution, when positioning the tool, first make the tool fit against the surface of the clamping table, then rotate the clamping block to the tool position, and then rotate the locking bolt until the clamping block clamps the tool; the positioning mechanism has a simple structure and is easy to operate.

[0018] Optionally, the positioning mechanism further includes a positioning block, which is fixed to the surface of the clamping table, and the cutting tool has a positioning hole through which the positioning block passes.

[0019] By adopting the above technical solution, when positioning the cutting tool, the positioning block passes through the positioning hole, which can further prevent the cutting tool from shaking.

[0020] Optionally, the base is rotatably connected to the mounting base, and the mounting base is provided with a positioning element for positioning the angle of the base.

[0021] By adopting the above technical solution, it is easy to adjust the angle of the tool, and when machining tools of different shapes, the cutting edge of the tool can abut against the outer wall of the grinding wheel.

[0022] In summary, this application has the following beneficial technical effects:

[0023] 1. This application, through the cooperation of guide groove and guide rod, enables the clamp to generate relative movement while following the movement of the moving seat, so that the cutting edge can always be in contact with the outer wall of the grinding wheel during the process of passing through the grinding wheel, which is convenient for the grinding wheel to completely grind irregular cutting edges.

[0024] 2. This application, by setting multiple guide grooves, enables the processing of cutting tools of different shapes on a single mold, and also provides a technical solution for processing cutting edges of different shapes using multiple guide rods. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a grinding mold according to Embodiment 1 of this application applied to a grinding equipment;

[0026] Figure 2 This is a side view of the overall structure of a grinding mold embodiment 1 disclosed in this application;

[0027] Figure 3 This is a schematic diagram of the overall structure of a grinding mold according to Embodiment 1 of this application;

[0028] Figure 4 This is a schematic diagram of the overall structure of a grinding mold according to embodiment 2 disclosed in this application;

[0029] Figure 5 yes Figure 4 Cross-section Figure 1 ;

[0030] Figure 6 yes Figure 4 A partial sectional view;

[0031] Figure 7 yes Figure 6 Enlarged view of region A in the middle;

[0032] Figure 8 yes Figure 5 yes Figure 4 Cross-section Figure 2 ;

[0033] Figure 9 yes Figure 4 A partial structural cross-sectional view.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Mounting base; 2. Worktable; 3. Machine body; 4. Grinding wheel; 5. Base; 6. Moving seat; 7. Nut; 8. Rotating shaft; 9. Side plate; 10. Fixing frame; 11. Polishing rod; 12. Slider; 13. Handle; 14. Lead screw; 15. Clamping platform; 16. Slide groove; 17. Guide groove; 18. Guide rod; 19. Through hole; 20. Locking bolt; 21. Clamping block; 22. Positioning block; 23. Positioning 24. Hole; 25. Sealing cavity; 26. Spring; 27. Rack; 28. Gear; 29. ​​Bevel gear one; 30. Bevel gear two; 31. Screw; 32. Handle; 33. Connecting rod; 34. Sliding groove; 35. Air cavity; 36. Take-up roller; 37. Pull rope; 38. Piston; 39. Air passage; 40. Cavity; 41. Rotating rod; 42. Changing groove; 43. Insert rod; 44. Guide block; 45. Strip groove. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0037] This application discloses a grinding mold.

[0038] Example 1;

[0039] Reference Figure 1 and Figure 2 A grinding mold includes a mounting base 1 and a worktable 2 disposed on the mounting base 1. The mounting base 1 is used to fix it to a grinding device. The grinding device includes a body 3 and a grinding wheel 4. The mounting base 1 is fixed to the body 3 by screws. The grinding wheel 4 is rotatably connected to the body 3 and is driven by a motor.

[0040] Reference Figure 2 and Figure 3The workbench 2 includes a base 5 and a movable seat 6. The base 5 is rotatably connected to the mounting seat 1. The rotation axis of the base 5 is set along the length of the machine body 3. The mounting seat 1 is provided with a positioning component for positioning the angle of the base 5. The positioning component includes a nut 7. A rotating shaft 8 is fixedly connected to the mounting seat 1. A side plate 9 is integrally formed on the base 5. The side plate 9 is sleeved on the rotating shaft 8. The nut 7 is threaded on the rotating shaft 8 and is located outside the side plate 9. By rotating the nut 7, the nut 7 is pressed against the side plate 9, thereby restricting the rotation of the base 5.

[0041] In another embodiment, the positioning element can also be a cylinder, which drives the base 5 to rotate. The cylinder can not only drive the base 5 to rotate, but also position the angle of the base 5.

[0042] Reference Figure 2 and Figure 3 In this embodiment, there are not many frequently used cutting tools. In actual work, different base 5 angles can be used to process different cutting tools. Therefore, angle scale lines are marked on the outer wall of the side plate 9, and corresponding indicator blocks are fixed on the mounting base 1. When processing cutting tools, the base 5 can be directly adjusted to the corresponding angle.

[0043] The movable seat 6 is slidably mounted on the base 5. The sliding direction of the movable seat 6 is set along the length direction of the body 3. The base 5 is provided with a drive assembly for driving the movable seat 6 to slide. A fixed frame 10 is fixedly connected to the base 5. The length direction of the fixed frame 10 is set along the length direction of the body 3. Two light rods 11 are fixedly connected to the fixed frame 10. The length direction of the light rods 11 is set along the length direction of the fixed frame 10 of the body 3. A slider 12 is fixedly connected to the movable seat 6. Both light rods 11 pass through the slider 12. The drive assembly includes a handle 13 and a lead screw 14. The length direction of the lead screw 14 is set along the length direction of the fixed frame 10. The lead screw 14 passes through the slider 12 and is threadedly connected to the slider 12. One end of the lead screw 14 passes through the fixed frame 10 and is fixedly connected to the handle 13 so that the handle 13 drives the lead screw 14 to rotate.

[0044] In another embodiment, the drive component can also be electrically driven, such as using electricity to drive the lead screw 14 to rotate, or using a cylinder to drive the slider 12 to slide, etc.

[0045] Reference Figure 2 and Figure 3In this embodiment, a clamping platform 15 is slidably connected to the movable base 6. The cutting tool is mounted on the clamping platform 15 through a positioning mechanism. When the movable base 6 is horizontally positioned, the clamping platform 15 can slide in the horizontal direction, and the sliding direction of the clamping platform 15 is perpendicular to the sliding direction of the movable base 6. The movable base 6 is Y-shaped, and the clamping platform 15 is slidably connected between two opposite side walls of the movable base 6. The two opposite side walls of the movable base 6 are provided with sliding grooves 16 for the clamping platform 15 to slide. The base 5 is provided with a guide groove 17 adapted to the cutting edge path direction of the cutting tool. The clamping platform 15 is provided with a guide rod 18 for inserting into the guide groove 17. The movable base 6 slides so that the cutting edge side wall of the cutting tool mounted on the clamping platform 15 can sequentially contact the outer wall of the grinding wheel 4 of the grinding equipment along its own path direction.

[0046] Reference Figure 2 and Figure 3 Multiple guide grooves 17 are provided. Since the commonly used cutting tools in actual production are straight-edged cutting tools and V-shaped cutting tools, in this embodiment, two guide grooves 17 are provided. One guide groove 17 is straight, and the path direction of the guide groove 17 is set along the sliding direction of the moving seat 6 to process straight-edged cutting tools. The other guide groove 17 is inverted V-shaped, which is adapted to the direction of the V-shaped cutting edge to process V-shaped cutting tools. When processing the V-shaped cutting tool, the guide rod 18 is inserted into the guide groove 17 for processing the V-shaped cutting edge. When the guide rod 18 is at the highest point of the guide groove 17, the lowest point of the V-shaped cutting edge is located at the outer wall of the contact grinding wheel 4. Thus, during the sliding process of the moving seat 6, due to the change of the direction of the V-shaped guide groove 17, the side wall of the V-shaped cutting edge can always contact the outer wall of the grinding wheel 4 of the grinding equipment along its own path direction to process the V-shaped cutting tool.

[0047] In this embodiment, there is one guide rod 18. The clamping platform 15 has multiple through holes 19 for the guide rod 18 to pass through and be inserted into the guide groove 17. The number of through holes 19 is matched with the number of guide grooves 17 and corresponds one-to-one. The guide rod 18 can pass through different through holes 19 to be inserted into different guide grooves 17.

[0048] Reference Figure 2 and Figure 3 To enhance the stability of the guide rod 18, the guide rod 18 may be provided with external threads, and the inner wall of the through hole 19 may be provided with internal threads, so that the guide rod 18 can be engaged with the thread on the inner wall of the through hole 19.

[0049] The positioning mechanism includes a clamping assembly, which includes a clamping block 21 and a locking bolt 20. The clamping block 21 has a strip groove 44, and the locking bolt 20 passes through the strip groove 44 and is threaded onto the clamping block 21. The tool is limited between the clamping block 21 and the outer surface of the clamping table 15.

[0050] In actual use, since the cutting edge of the tool needs to be sharpened, after the clamping assembly clamps the tool, the cutting edge of the tool needs to be partially located outside the clamping table 15.

[0051] Reference Figure 2 and Figure 3 The positioning mechanism also includes multiple sets of positioning parts, each set of positioning parts including multiple positioning blocks 22. The positioning blocks 22 are fixed on the surface of the clamping table 15, and the cutting tool is provided with positioning holes 23 for the positioning blocks 22 to pass through. In this embodiment, there are two positioning parts, one of which is used to position the cutting tool with a straight cutting edge, and the other is used to position the cutting tool with a V-shaped cutting edge. The positioning blocks 22 have a certain elasticity and can be interference-fitted with the positioning holes 23 to enhance the stability of the cutting tool.

[0052] The implementation principle of the grinding mold embodiment 1 of this application is as follows: When in use, the tool to be ground is installed on the clamping table 15, and the tool is positioned and locked by the clamping block 21 and the positioning block 22. Then, the angle of the base 5 is adjusted so that the cutting edge of the tool can abut against the outer wall of the grinding wheel 4. Different guide grooves 17 are selected for different shaped tools, and the guide rod 18 is inserted into the corresponding guide groove 17. Then, the handle 13 is turned to drive the lead screw 14 to rotate, thereby driving the moving seat 6 to move. With the cooperation of the guide rod 18 and the guide groove 17, the clamping table 15 moves, so that the cutting edge of the tool can always abut against the outer wall of the grinding wheel 4.

[0053] Example 2;

[0054] Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that multiple guide rods 18 are provided, and the number of guide rods 18 and the number of guide grooves 17 are matched and correspond one-to-one. When there are two guide grooves 17, there are two guide rods 18. The guide rods 18 are slidably connected in the clamping platform 15 along the thickness direction. A sealing cavity 24 is provided in the clamping platform 15 for the guide rods 18 to slide. The guide rods 18 and the inner wall of the sealing cavity 24 are sealed. A spring 25 is fixedly connected in the sealing cavity 24 along the sliding direction of the guide rods 18. The spring 25 and the guide rods 18 are fixedly connected. A driving mechanism for driving the guide rods 18 to slide is provided on the clamping platform 15.

[0055] In this embodiment, a driving mechanism is used to make the two guide rods 18 move in opposite directions at the same time. That is, when one guide rod 18 is inserted into the corresponding guide groove 17, the other guide rod 18 is disengaged from the guide groove 17 and moves away from the guide groove 17.

[0056] Reference Figure 5 and Figure 6The drive mechanism includes racks 26 and gears 27. There are two gears 27 and two racks 26. The racks 26 are slidably connected in the clamping platform 15. The clamping platform 15 has a sliding groove 33 for the racks 26 to slide. The length direction and sliding direction of the racks 26 are both set along the sliding direction of the clamping platform 15. A connecting rod 32 is fixedly connected between the two racks 26 so that the two racks 26 keep moving synchronously.

[0057] Reference Figure 6 and Figure 7 The clamping platform 15 has a cavity 39. A screw 30 is rotatably connected inside the clamping platform 15. One end of the screw 30 passes through the rack 26 and is threadedly connected to the rack 26. The other end of the screw 30 is coaxially fixedly connected to a bevel gear 27-1. The bevel gear 27-1 is located inside the cavity 39. A bevel gear 27-2 is rotatably connected inside the cavity 39. The bevel gear 27-1 and the bevel gear 27-2 are meshed. A handle 31 for driving the bevel gear 27-2 to rotate is rotatably connected inside the clamping platform 15.

[0058] Reference Figure 6 and Figure 8 Gear 27 is rotatably connected to clamp 15. Two gears 27 are respectively meshed with two racks 26. A take-up roller 35 is coaxially fixedly connected to gear 27. The take-up roller 35 is rotatably connected to clamp 15. Two air chambers 34 are opened in clamp 15. A movable piston 37 is provided in air chamber 34. The outer wall of piston 37 and the inner wall of air chamber 34 are sealed. A pull rope 36 is wound and fixedly connected to take-up roller 35. The other end of pull rope 36 is fixedly connected to piston 37. One air chamber 34 and sealing chamber 24 are connected through air passage 38. The other air chamber 34 and sealing chamber 24 are connected through another air passage 38.

[0059] In the initial position, both guide rods 18 are located within the sealed cavity 24, and the spring 25 deforms. During use, by rotating the handle 13, the two racks 26 move, thereby driving the gear 27 to move. The movement of the gear 27 drives the take-up roller 35 to rotate, winding or unwinding the pull rope 36, thereby driving the two pistons 37 to move. One take-up roller 35 winds up, evacuating air from one of the sealed cavities 24. Under the action of air pressure, the guide rods 18 in the sealed cavity 24 move away from the guide groove 17, while the other take-up roller 35 unwinds. The pistons 37 are temporarily unrestrained, and the spring 25 has a tendency to recover its deformation, causing the guide rods 18 in the sealed cavity 24 to insert into the guide groove 17.

[0060] In this embodiment, by controlling the winding direction of the pull rope 36 or controlling the rotation of the two gears 27, it is possible to achieve that when one guide rod 18 is inserted into the corresponding guide groove 17, the other guide rod 18 disengages from the guide groove 17 and moves away from the guide groove 17.

[0061] Reference Figure 4 and Figure 9 In order to enable the clamping block 21 to automatically clamp the tool during the change of guide rod 18, the clamping assembly in this embodiment no longer uses locking bolt 20. Instead, two clamping blocks 21 are used, which are integrally formed and L-shaped. A rotating rod 40 is coaxially fixedly connected to the take-up roller 35. The rotating rod 40 is located on the outer surface of the clamping platform 15 and passes through the intersection of the two clamping blocks 21. The cross-section of the rotating rod 40 is rectangular, allowing the two clamping blocks 21 to move along the length of the rotating rod 40. A change groove 41 is provided on the upper surface of the clamping platform 15 to allow the clamping blocks 21 to move vertically. The change groove 41 is arranged circumferentially around the rotating rod 40. An insert rod 42 is fixedly connected to one of the clamping blocks 21. A guide block 43 is fixedly connected to the lower end of 42. The guide block 43 is in the shape of a round rod. The cross-section of the transformation groove 41 is T-shaped. The guide block 43 is inserted into the transformation groove 41. By changing the depth of the transformation groove 41, the clamping block 21 can move vertically. In this embodiment, the bottom surface of the transformation groove 41 has a highest point and a lowest point. When the rotating rod 40 rotates forward or backward by 180 degrees, the guide block 43 can move from the highest point to the lowest point. In the initial position, the two springs 25 are in a deformed state. The guide block 43 is located at the highest point of the transformation groove 41. When clamping a straight-edged tool, the rotating rod 40 rotates forward by 180 degrees to clamp the straight-edged tool. When clamping a V-shaped tool, the rotating rod 40 rotates backward by 180 degrees to clamp the V-shaped tool.

[0062] The implementation principle of the grinding mold embodiment 2 of this application is as follows: In use, rotating the rotating wheel drives the screw 30 to rotate through bevel gear 27-1 and bevel gear 27-2, thereby driving the two racks 26 to slide, which in turn drives the two gears 27 to rotate. The rotation of the gears 27 drives the winding roller 35 to rotate, and the rotation of the winding roller 35 drives the piston 37 to move, thereby cooperating with the spring 25 to realize the movement of the guide rod 18. When one guide rod 18 is inserted into the corresponding guide groove 17, the other guide rod 18 disengages from the guide groove 17 and moves away from the guide groove 17, so as to realize the change of different guide grooves 17 according to different blade shapes. During this process, the winding roller 35 rotates, driving the rotating rod 40 to rotate. Under the action of the changing groove 41, the clamping block 21 rotates and clamps the knife.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A grinding mold, comprising a mounting base (1) and a worktable (2) disposed on the mounting base (1), the mounting base (1) being used to fix it on a grinding device, characterized in that: The workbench (2) includes a base (5) and a movable seat (6). The base (5) is mounted on the mounting base (1). The movable seat (6) is slidably mounted on the base (5). A clamp (15) is slidably connected to the movable seat (6). The clamp (15) is used to mount the cutting tool. The base (5) has a guide groove (17) adapted to the cutting edge path direction of the cutting tool. The clamp (15) has a guide rod (18) for inserting into the guide groove (17). The base (5) has a drive assembly for driving the movable seat (6) to slide. The movable seat (6) slides so that the cutting edge sidewall of the cutting tool mounted on the clamp (15) can sequentially contact the outer wall of the grinding wheel (4) of the grinding equipment along its own path direction. Two guide grooves (17) are provided, one guide groove (17) is straight and the other guide groove (17) is inverted V-shaped; two guide rods (18) are provided, the guide rods (18) are slidably connected in the clamping platform (15) along the thickness direction of the clamping platform (15), a sealing cavity (24) is provided in the clamping platform (15) for the guide rods (18) to slide, the guide rods (18) and the inner wall of the sealing cavity (24) are sealed, a spring (25) is fixedly connected in the sealing cavity (24) along the sliding direction of the guide rods (18), the spring (25) and the guide rods (18) are fixedly connected, and a driving mechanism for driving the guide rods (18) to slide is provided on the clamping platform (15); The drive mechanism includes a rack (26) and gears (27). There are two gears (27) and two racks (26). The racks (26) are slidably connected in a clamp (15). A sliding groove (33) is provided in the clamp (15) for the racks (26) to slide. The length direction and sliding direction of the racks (26) are both set along the sliding direction of the clamp (15). A connecting rod (32) is fixedly connected between the two racks (26) to make the two racks... (26) Maintain synchronous movement; a cavity (39) is provided inside the clamping platform (15), and a screw (30) is rotatably connected inside the clamping platform (15). One end of the screw (30) passes through the rack (26) and is threadedly connected to the rack (26). The other end of the screw (30) is coaxially fixedly connected to a bevel gear (28). The bevel gear (28) is located inside the cavity (39). A bevel gear (29) is rotatably connected inside the cavity (39). The gear (27) is rotatably connected to the bevel gear (29), and a handle (31) for driving the bevel gear (29) to rotate is rotatably connected inside the clamp (15); the gear (27) is rotatably connected inside the clamp (15), and the two gears (27) are respectively meshed with two racks (26). A take-up roller (35) is coaxially fixedly connected to the gear (27), and the take-up roller (35) is rotatably connected inside the clamp (15). Two air-operated pneumatic tubes are provided inside the clamp (15). The cavity (34) is equipped with a movable piston (37). The outer wall of the piston (37) and the inner wall of the air cavity (34) are sealed. A pull rope (36) is wound and fixedly connected on the take-up roller (35). The other end of the pull rope (36) is fixedly connected to the piston (37). One air cavity (34) and the sealed cavity (24) are connected through an air passage (38). The other air cavity (34) and the sealed cavity (24) are connected through another air passage (38). Two clamping blocks (21) are provided, and the two clamping blocks (21) are integrally formed. The two clamping blocks (21) are L-shaped. A rotating rod (40) is coaxially fixedly connected to the winding roller (35). The rotating rod (40) is located on the outer surface of the clamping platform (15). The rotating rod (40) passes through the intersection of the two clamping blocks (21). The cross-section of the rotating rod (40) is rectangular, allowing the two clamping blocks (21) to move along the length of the rotating rod (40). A conversion groove (41) is provided on the upper surface of the clamping platform (15) to allow the clamping blocks (21) to move vertically. The conversion groove (41) is arranged circumferentially around the rotating rod (40). A plug rod (42) is fixedly connected to one of the clamping blocks (21). A guide block (43) is fixedly connected to the lower end of the plug rod (42). The guide block (43) is round. The cross-section of the conversion groove (41) is T-shaped. The guide block (43) is inserted into the conversion groove (41). The clamping block (21) can be made to move vertically by changing the depth of the changing groove (41). The bottom surface of the changing groove (41) has a highest point and a lowest point. When the rotating rod (40) rotates forward or backward by 180 degrees, the guide block (43) can move from the highest point to the lowest point. In the initial position, the two springs (25) are in a deformed state, and the guide block (43) is located at the highest point of the changing groove (41). When clamping the straight-edged cutting tool, the rotating rod (40) rotates forward by 180 degrees to clamp the straight-edged cutting tool. When clamping the V-shaped cutting tool, the rotating rod (40) rotates backward by 180 degrees to clamp the V-shaped cutting tool.

2. The grinding mold according to claim 1, characterized in that: The base (5) is rotatably connected to the mounting base (1), and the mounting base (1) is provided with a positioning element for positioning the angle of the base (5).

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