Quick-change module stamping die

Abstract

This utility model discloses a quick-change modular stamping die, relating to the field of stamping die technology. It includes a lower die and an upper die. Several lower dies are mounted on fixed frames, which are arranged in an array on a rotating rod. Several upper dies are mounted on the upper end of a support frame. A displacement mechanism is provided at the bottom of the support frame. Each upper die has a quick-connect mechanism inside. This utility model, by fixing several fixed frames on the rotating rod and mounting several lower dies on different fixed frames, allows for quick switching of different lower dies when switching between them. The support frame and moving frame are also provided, with the upper dies placed on the upper end of the support frame and each upper die having a quick-connect mechanism inside, facilitating rapid switching of the upper dies.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically to a quick-change modular stamping die. Background Technology

[0002] Stamping dies are core process equipment in metal plastic forming, widely used in many manufacturing fields such as automobiles, aerospace, home appliances, electronic communications, and hardware products. Their core function is to use the upper and lower dies mounted on a press to separate or plastically deform metal sheets or strips placed within the die cavity under strong mechanical pressure, thereby efficiently, precisely, and in large quantities producing metal parts or products with specific shapes, dimensions, and properties.

[0003] However, when faced with the demands of multi-variety, small-batch, and highly customized stamping production, the limitations of traditional integral stamping dies are becoming increasingly apparent. After completing the production of a specific product, when switching to a product of a different shape or size, it is usually necessary to completely disassemble the currently used upper and lower dies from the press, then install and precisely adjust the new complete set of dies. Each die changeover process often takes tens of minutes or even hours, during which the equipment is completely shut down. For scenarios with small production batches and frequent product changes, this inefficient die changeover method has become a major bottleneck restricting the improvement of production efficiency.

[0004] Based on this, we now offer quick-change modular stamping dies, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a quick-change modular stamping die to solve the problem of inconvenience in quickly changing dies in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A quick-change modular stamping die includes a lower die and an upper die. Several lower dies are mounted on a fixed frame, and the fixed frames are arranged in an array on a rotating rod. The rotating rod is rotatably mounted inside a base box. A first electric cylinder is located above the rotating rod and is fixedly mounted in a mounting hole at the upper end of a roof. The roof is fixedly mounted at the upper end of the base box. Several upper dies are mounted on a support frame. The bottom end of the support frame is provided with a displacement mechanism to facilitate the movement of the upper dies to below the first electric cylinder for switching. Each upper die is equipped with a quick-connect mechanism for rapid installation and connection with the first electric cylinder.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative embodiment: an extension shaft is fixedly provided at one end of the rotating rod, a worm gear is fixedly provided on the extension shaft, a worm is meshed on the worm gear, a first rotating plate is rotatably provided on the rotating shafts at both ends of the worm, the first rotating plate is fixedly provided on one side of the base box, one end of the worm is fixedly connected to the output end of a first motor, the first motor is fixedly provided on one side of the base box, a protective box is fixedly provided on one side of the base box at a position corresponding to the worm gear and the worm, the first motor is electrically connected to a control component, and the control component is fixedly provided on one side of the base box.

[0010] In one alternative embodiment: the displacement mechanism includes a movable frame, with symmetrically arranged traveling frames at the bottom of the movable frame. Each traveling frame is symmetrically equipped with rollers, which are in close contact with the upper end of the base box. First guide rods are symmetrically arranged on the inner side of the movable frame, and support frames are symmetrically slidably arranged on the two first guide rods. The support frames are symmetrically arranged at the bottom of the support frame, and each support frame has a threaded hole in its center. The support frames are mounted on threaded rods through the threaded holes. The threaded rods are rotatably disposed within rotating holes on the inner side of the movable frame. One end of the threaded rod is fixedly connected to the output end of a second motor. The second motor is fixedly disposed on one side of the movable frame. The movable frame is fixedly disposed at the output end of a second electric cylinder. The second electric cylinder is fixedly disposed at the upper end of the base box. Positioning grooves are provided at the upper end of the support frame corresponding to the position of the lower mold.

[0011] In one alternative embodiment: the quick-connect mechanism includes a connector, the output end of the first electric cylinder is fixedly provided with the connector, the connector is symmetrically provided with limiting rods, the upper end of the upper mold is provided with grooves corresponding to the positions of the connector and the limiting rods, the upper mold is symmetrically provided with stop rods, both ends of the stop rods are slidably provided with second guide slide rods, the second guide slide rods are all fixedly provided in the mounting grooves inside the upper mold, a plurality of first return springs are fixedly provided between one side of the stop rod and one side of the mounting groove, and a fixing pin is fixedly provided at one end of each stop rod. The fixed pins extend to the outside of the upper mold. Each fixed pin is hinged with a connecting rod, and the other end of each connecting rod is hinged to a hinge frame. The hinge frame is slidably disposed inside the mounting box, which is fixedly disposed on one side of the upper mold. A third guide slide rod is slidably disposed in the middle of the hinge frame, and the third guide slide rod is fixedly disposed inside the mounting box. A second return spring is disposed between the bottom end of the mounting box and the bottom end of the hinge frame. A pressure rod is fitted to the upper end of each hinge frame, and the pressure rod is fixedly disposed at the output end of a third electric cylinder. The third electric cylinder is fixedly disposed in the mounting hole at the upper end of the bearing frame.

[0012] In one alternative: a limiting frame is fixedly provided on one side of the mounting box, and a limiting block is slidably provided inside the limiting frame, with the limiting block fixedly provided on the upper end of the pressure rod.

[0013] In one alternative: a fixed seat is fixedly provided on one side of the rotating rod.

[0014] In one alternative embodiment: symmetrical baffles are symmetrically attached to the upper inner side of the base box, and guide plates are fixedly mounted on the bottom ends of the baffles. One end of the guide plate is located at the bottom end of the fixing frame. Collection boxes are symmetrically arranged inside the base box. Sliding blocks and threaded holes are fixedly mounted on both ends of the baffles. The sliding blocks are slidably mounted on a fourth guide rod. The fourth guide rod is fixedly mounted inside the base box. The threaded holes are all mounted on a bidirectional screw. The bidirectional screw is rotatably mounted in the mounting hole inside the base box. One end of the bidirectional screw is fixedly connected to the output end of a third motor. The third motor is fixedly mounted on one side of the base box.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model features several fixed frames fixed on a rotating rod, and several lower dies mounted on different fixed frames. When switching lower dies, the rotating rod drives the lower dies to rotate, allowing for quick switching between different lower dies. A support frame and a moving frame are also provided, with the upper die placed on the upper part of the support frame. Each upper die has a quick-connect mechanism inside, facilitating rapid switching. This makes the invention suitable for small-batch, multi-variety stamping production, thus increasing the practicality of stamping dies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the bottom box of this utility model.

[0019] Figure 3 This is a schematic diagram of the installation of the fixing frame and fixing base of this utility model.

[0020] Figure 4 This is a schematic diagram of the installation of the worm gear and worm of this utility model.

[0021] Figure 5 This is a schematic diagram of the connector structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the internal structure of the lower mold of this utility model.

[0023] Figure 7 This is a schematic diagram of the limiting frame and pressure bar structure of this utility model.

[0024] Figure reference numerals: 11 Lower mold, 12 Fixed frame, 13 Rotating rod, 14 Worm gear, 15 Worm, 16 First motor, 17 Base box, 18 Upper mold, 19 First electric cylinder, 20 Connector, 21 Limiting rod, 22 Stopping rod, 23 First return spring, 24 Connecting rod, 25 Hinge frame, 26 Mounting box, 27 Second return spring, 28 Bearing frame, 29 Moving frame, 30 Second electric cylinder, 31 Threaded rod, 32 Second motor, 33 Limiting frame, 34 Pressure rod, 35 Third electric cylinder, 36 Baffle, 37 Guide plate, 38 Collection box, 39 Bidirectional screw, 40 Third motor, 41 Fixed seat, 42 Control components. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] In one embodiment, such as Figures 1-7 As shown, the quick-change modular stamping die includes a lower die 11 and an upper die 18. Several lower dies 11 are mounted on a fixed frame 12. Several fixed frames 12 are arranged in an array on a rotating rod 13. The rotating rod 13 is rotatably mounted inside a base box 17. A first electric cylinder 19 is provided above the rotating rod 13. The first electric cylinder 19 is fixedly mounted in a mounting hole at the upper end of the top. The top is fixedly mounted at the upper end of the base box 17. Several upper dies 18 are mounted on the upper end of a support frame 28. The bottom end of the support frame 28 is provided with a displacement mechanism to facilitate the movement of the upper dies 18 to below the first electric cylinder 19 for switching. Each upper die 18 is provided with a quick-connect mechanism for quick installation and connection with the first electric cylinder 19. The displacement mechanism drives several upper dies 18 to move to below the first electric cylinder 19, thereby enabling the switching of different upper dies 18. The quick-connect mechanism facilitates the quick disassembly of the upper die 18 from the first electric cylinder 19.

[0028] One end of the rotating rod 13 is fixedly provided with an extension shaft, on which a worm gear 14 is fixedly provided. A worm 15 is meshed on the worm gear 14. First rotating plates are rotatably provided on the rotating shafts at both ends of the worm 15. The first rotating plates are fixedly provided on one side of the base box 17. One end of the worm 15 is fixedly connected to the output end of a first motor 16. The first motor 16 is fixedly provided on one side of the base box 17. A protective box is fixedly provided on one side of the base box 17 at a position corresponding to the positions of the worm gear 14 and the worm 15. The first motor 16 and the control unit... The control component 42 is electrically connected to the bottom box 17. In use, when performing small-batch multi-type stamping production, multiple lower dies are installed on several fixed frames 12 respectively. When it is necessary to switch the lower die, the control component 42 controls the first motor 16 to start. The first motor 16 drives the worm wheel 14 to rotate through the worm 15. The worm wheel 14 drives the rotating rod 13 to rotate. The rotating rod 13 drives the lower die 11 to rotate, so that the lower die 11 to be used is rotated directly below the first electric cylinder 19.

[0029] The displacement mechanism includes a movable frame 29, with symmetrically arranged traveling frames at the bottom end of the movable frame 29. Each traveling frame is symmetrically equipped with rollers, which are in close contact with the upper end of the base box 17. First guide rods are symmetrically arranged on the inner side of the movable frame 29, and support frames are symmetrically slidably arranged on the two first guide rods. The support frames are symmetrically arranged at the bottom end of the bearing frame 28, and each support frame has a threaded hole in its center. The support frames are mounted on threaded rods 31 through the threaded holes. The threaded rods 31 are rotatably disposed within a rotating hole inside the movable frame 29. One end of the threaded rod 31 is fixedly connected to the output end of a second motor 32, which is fixedly mounted on one side of the movable frame 29. The movable frame 29 is fixedly mounted on the output end of a second electric cylinder 30, which is fixedly mounted on the upper end of the base box 17. Positioning grooves are provided at the upper end of the bearing frame 28 corresponding to the position of the lower mold 11. In use, when it is necessary to switch the upper mold 18, the control unit 42 controls the second electric cylinder 30 to start, so that the output end of the second electric cylinder 30 drives the moving frame 29 to move. The moving frame 29 drives several upper molds 18 to move. When the upper mold 18 moves to below the first electric cylinder 19, the second electric cylinder 30 stops, and at the same time the second motor 32 starts. Under the action of the thread, the support frame 28 slides, so that the positioning groove where the upper mold 18 is not placed is aligned with the upper mold 18 at the working end of the first electric cylinder 19. Then the upper mold 18 on the output end of the first electric cylinder 19 is unloaded and placed on the upper end of the support frame 28. Then the second motor 32 is started again, so that the upper mold 18 to be used is aligned with the output end of the first electric cylinder 19. After the upper mold 18 is installed on the output end of the first electric cylinder 19, the second electric cylinder 30 drives the moving frame 29 back to the initial position.

[0030] The quick-connect mechanism includes a connector 20. The output end of the first electric cylinder 19 is fixedly provided with the connector 20. The connector 20 is symmetrically provided with limiting rods 21. The upper end of the upper mold 18 is provided with grooves corresponding to the positions of the connector 20 and the limiting rods 21. The upper mold 18 is symmetrically provided with stop rods 22. The two ends of the stop rods 22 are slidably provided with second guide slides. The second guide slides are fixedly provided in the mounting grooves inside the upper mold 18. A plurality of first return springs 23 are fixedly provided between one side of the stop rod 22 and one side of the mounting groove. Each component is fixedly equipped with a fixing pin, which extends to the outside of the upper mold 18. A connecting rod 24 is hinged to each fixing pin, and the other end of each connecting rod 24 is hinged to a hinge frame 25. The hinge frame 25 is slidably disposed inside the mounting box 26, which is fixedly disposed on one side of the upper mold 18. A third guide rod is slidably disposed in the middle of the hinge frame 25, and the third guide rod is fixedly disposed inside the mounting box 26. A second return spring 27 is disposed between the bottom end of the mounting box 26 and the bottom end of the hinge frame 25. A pressure rod 34 is fitted onto the upper end of each hinge frame 25. 4. Fixed at the output end of the third electric cylinder 35, the third electric cylinder 35 is fixed in the mounting hole at the upper end of the support frame 28. In use, when it is necessary to separate the upper mold 18 from the connector 20, the upper end of the support frame 28 is made to be in close contact with the bottom end of the upper mold 18, and the hinge frame 25 is positioned below the pressure rod 34. Then, the corresponding third electric cylinder 35 is activated. The output end of the third electric cylinder 35 drives the pressure rod 34 to move, and the pressure rod 34 drives the hinge frame 25 to slide, so that the hinge frame 25 drives the stop rod 22 to slide through the connecting rod 24. When the stop rod 22 separates from the limit rod 21, the first electric cylinder 19... The output end drives the connector 20 to rise and disengage from the upper mold 18, thereby quickly separating the upper mold 18 from the connector 20. When it is necessary to install the upper mold 18, the upper groove of the upper mold 18 is aligned with the connector 20. Then, the output end of the first electric cylinder 19 drives the connector 20 to descend, and the limit rod 21 pushes the stop rod 22 to slide. When the bottom end of the connector 20 is in close contact with the bottom end of the groove, the first return spring 23 causes the stop rod 22 to return to its initial position, so that the bottom end of the stop rod 22 is in close contact with the upper end of the limit rod 21, thereby completing the installation of the upper mold 18.

[0031] Each side of the mounting box 26 is fixedly provided with a limiting frame 33, and each limiting frame 33 is slidably provided with a limiting block. The limiting block is fixedly provided on the upper end of the pressure rod 34. When the upper mold 18 is placed on the upper end of the support frame 28 and not in use, the third electric cylinder 35 drives the pressure rod 34 to rise, so that the upper end of the pressure rod 34 is in close contact with the bottom end of the limiting frame 33, and at the same time the limiting block is in close contact with the inner side of the limiting frame 33, thereby fixing the upper mold 18 and preventing the upper mold 18 from falling off the upper end of the support frame 28 during the movement.

[0032] A fixed base 41 is fixedly provided on one side of the rotating rod 13. When in use, the fixed base 41 can support the upper mold 18 after it is removed from the upper end of the support frame 28, which facilitates the replacement of the upper mold 18.

[0033] Example 2

[0034] The difference from Embodiment 1 is that: Symmetrical baffles 36 are closely attached to the upper inner side of the bottom box 17; guide plates 37 are fixedly mounted on the bottom ends of the baffles 36; one end of the guide plate 37 is located at the bottom end of the fixing frame 12; collection boxes 38 are symmetrically arranged inside the bottom box 17; sliding blocks and threaded holes are fixedly mounted on both ends of the baffles 36; the sliding blocks are slidably mounted on a fourth guide rod; the fourth guide rod is fixedly mounted inside the bottom box 17; the threaded holes are all located on a bidirectional screw 39; the bidirectional screw 39 is rotatably mounted in the mounting hole inside the bottom box 17; the bidirectional screw 39... One end of the screw 39 is fixedly connected to the output end of the third motor 40, which is fixedly mounted on one side of the base box 17. In use, when the lower mold 11 is working, the third motor 40 drives the bidirectional screw 39 to rotate. Under the action of the screw, the two baffles 36 and the guide plate 37 move simultaneously in opposite directions. When the baffle 36 is in close contact with the fixed frame 12, the baffle 36 stops moving. At the same time, one end of the two guide plates 37 is in close contact, and the guide plates 37 are located below the fixed frame 12, so that the stamping waste can be guided into the collection box 38 during stamping.

[0035] The above embodiments disclose quick-change modular stamping dies. In small-batch, multi-variety stamping production, multiple lower dies are mounted on several fixed frames 12, and upper dies 18 are placed on the upper end of a support frame 28. When switching lower dies is required, the control component 42 controls the first motor 16 to start. The first motor 16 drives the worm wheel 14 to rotate via the worm gear 15. The worm wheel 14 drives the rotating rod 13 to rotate, which in turn drives the lower die 11 to rotate, positioning it directly below the first electric cylinder 19. When switching upper dies 18 is required, the control component 42 controls the second electric cylinder 30 to start, causing the output end of the second electric cylinder 30 to move the moving frame 29. The moving frame 29 then moves several upper dies 18. When the upper die 18 moves below the first electric cylinder 19, the second electric cylinder 30 stops, and the second motor 32 starts. Under the action of the screw thread, the support frame 28 slides, aligning the positioning groove where the upper die 18 is not placed with the working end of the first electric cylinder 19. For alignment, when separating the upper mold 18 from the connector 20, the upper end of the support frame 28 should be tightly against the bottom end of the upper mold 18, and the hinge frame 25 should be positioned below the pressure rod 34. Then, the corresponding third electric cylinder 35 is activated. The output end of the third electric cylinder 35 drives the pressure rod 34 to move, and the pressure rod 34 drives the hinge frame 25 to slide. This causes the hinge frame 25 to drive the stop rod 22 to slide via the connecting rod 24. When the stop rod 22 separates from the limit rod 21, the output end of the first electric cylinder 19 drives the connector 20 to rise and disengage from the upper mold 18. This causes the upper mold 18 to separate quickly from the connector 20. Then, the second motor 32 is started again, aligning the upper groove of the upper mold 18 with the connector 20. Then, the output end of the first electric cylinder 19 drives the connector 20 to descend. The limit rod 21 pushes the stop rod 22 to slide. When the bottom end of the connector 20 is in close contact with the bottom end of the groove, the first return spring 23 causes the stop rod 22 to return to its initial position, so that the bottom end of the stop rod 22 is in close contact with the upper end of the limit rod 21, thereby completing the installation of the upper mold 18.

[0036] Simultaneously, the third electric cylinder 35 drives the pressure rod 34 to rise, so that the upper end of the pressure rod 34 is in close contact with the bottom end of the limiting frame 33, and the limiting block is in close contact with the inner side of the limiting frame 33, thereby fixing the upper mold 18 and preventing the upper mold 18 from falling off the upper end of the support frame 28 during the movement. The second electric cylinder 30 drives the moving frame 29 back to the initial position. When the lower mold 11 is working, the third motor 40 drives the bidirectional screw 39 to rotate. Under the action of the screw, the two baffles 36 and the guide plate 37 move simultaneously and in opposite directions. When the baffle 36 is in close contact with the fixed frame 12, the baffle 36 stops moving. At the same time, one end of the two guide plates 37 is in close contact and the guide plates 37 are located below the fixed frame 12, so that the stamping waste can be guided into the collection box 38 during stamping.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A quick-change die stamping die, comprising a lower die (11) and an upper die (18), a plurality of said lower dies (11) are each mounted on a fixed frame (12), characterized in that, Several fixed frames (12) are arranged in an array on a rotating rod (13), which is rotatably mounted inside a base box (17). A first electric cylinder (19) is provided above the rotating rod (13), and the first electric cylinder (19) is fixedly mounted in the mounting hole at the upper end of the ceiling. The ceiling is fixedly mounted at the upper end of the base box (17). Several upper molds (18) are mounted on the upper end of a support frame (28). The bottom end of the support frame (28) is provided with a displacement mechanism to facilitate the movement of the upper molds (18) to the area below the first electric cylinder (19) for switching. Each upper mold (18) is provided with a quick-connect mechanism for rapid installation and connection with the first electric cylinder (19).

2. The quick change die set of claim 1, wherein, One end of the rotating rod (13) is fixedly provided with an extension shaft, and a worm gear (14) is fixedly provided on the extension shaft. A worm (15) is meshed on the worm gear (14). A first rotating plate is rotatably provided on the rotating shafts at both ends of the worm (15). The first rotating plate is fixedly provided on one side of the base box (17). One end of the worm (15) is fixedly connected to the output end of the first motor (16). The first motor (16) is fixedly provided on one side of the base box (17). A protective box is fixedly provided on one side of the base box (17) at the position corresponding to the worm gear (14) and the worm (15). The first motor (16) is electrically connected to the control component (42). The control component (42) is fixedly provided on one side of the base box (17).

3. The quick change die set of claim 2, wherein, The displacement mechanism includes a movable frame (29), with a walking frame symmetrically arranged at the bottom of the movable frame (29). Rollers are symmetrically arranged on each of the walking frames, and the rollers are in close contact with the upper end of the base box (17). First guide slide rods are symmetrically arranged on the inner side of the movable frame (29), and support frames are symmetrically slidably arranged on the two first guide slide rods. The support frames are symmetrically arranged at the bottom of the bearing frame (28). Each support frame has a threaded hole in the middle, and the support frames are all arranged on the threaded rod (31) through the threaded hole. The threaded rod (31) is rotatably arranged in the rotating hole inside the movable frame (29). One end of the threaded rod (31) is fixedly connected to the output end of the second motor (32). The second motor (32) is fixedly arranged on one side of the movable frame (29). The movable frame (29) is fixedly arranged at the output end of the second electric cylinder (30). The second electric cylinder (30) is fixedly arranged on the upper end of the base box (17). Positioning grooves are provided at the upper end of the bearing frame (28) corresponding to the position of the lower mold (11).

4. The quick change die set of claim 3, wherein, The quick-connect mechanism includes a connector (20). The connector (20) is fixedly provided at the output end of the first electric cylinder (19). Limiting rods (21) are symmetrically provided on the connector (20). Grooves are provided at the upper end of the upper mold (18) at positions corresponding to the connector (20) and the limiting rods (21). Stopping rods (22) are symmetrically provided inside the upper mold (18). Second guide slides are slidably provided at both ends of the stop rods (22). The second guide slides are fixedly provided in the mounting grooves inside the upper mold (18). Several first return springs (23) are fixedly provided between one side of the stop rod (22) and one side of the mounting groove. A fixing pin is fixedly provided at one end of the stop rod (22). The fixing pin extends to the upper mold (18). Externally, each of the fixed pins is hinged with a connecting rod (24), and the other end of each connecting rod (24) is hinged to a hinge frame (25). The hinge frame (25) is slidably disposed inside the mounting box (26). The mounting box (26) is fixedly disposed on one side of the upper mold (18). A third guide slide rod is slidably disposed in the middle of the hinge frame (25). The third guide slide rod is fixedly disposed inside the mounting box (26). A second return spring (27) is disposed between the bottom end of the mounting box (26) and the bottom end of the hinge frame (25). A pressure rod (34) is fitted on the upper end of each hinge frame (25). The pressure rod (34) is fixedly disposed at the output end of the third electric cylinder (35). The third electric cylinder (35) is fixedly disposed in the mounting hole at the upper end of the bearing frame (28).

5. The quick change die set of claim 4, wherein, Each of the mounting boxes (26) is fixedly provided with a limiting frame (33) on one side, and a limiting block is slidably provided inside the limiting frame (33), and the limiting block is fixedly provided on the pressure rod (34).

6. The quick change die set of claim 1, wherein, A fixed seat (41) is fixedly provided on one side of the rotating rod (13).

7. The quick change die set of claim 1, wherein, The bottom box (17) is symmetrically fitted with baffles (36) on the upper inner side. Each baffle (36) is fixed with a guide plate (37) at the bottom. One end of the guide plate (37) is located at the bottom of the fixing frame (12). The bottom box (17) is symmetrically fitted with collection boxes (38). Each baffle (36) is fixed with a sliding block and a threaded hole at both ends. Each sliding block is slidably mounted on a fourth guide rod. The fourth guide rod is fixed inside the bottom box (17). Each threaded hole is mounted on a bidirectional screw (39). The bidirectional screw (39) is rotatably mounted in the mounting hole inside the bottom box (17). One end of the bidirectional screw (39) is fixedly connected to the output end of a third motor (40). The third motor (40) is fixedly mounted on one side of the bottom box (17).

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