Cutting device for amorphous composite strip

Abstract

The utility model discloses a cutting device for amorphous composite strip, including support, the upper end fixed mounting of support has the support plate, and the side end of support plate is equipped with the feed port, the upper end fixed mounting of support plate close to feed port has the guide rail, and the both ends of guide rail are provided with positive iron sheet and negative iron sheet, and the outer wall of support plate is slidably installed with the fixing frame, and the side end of fixing frame is slidably installed with the upper tool rest, and the one end rotationally installed of upper tool rest away from fixing frame has the sliding block, and the inner wall fixed mounting of sliding block has the adjusting motor, the utility model discloses through positive electromagnet and negative electromagnet and transmit the magnetic force to the iron sheet, and the material is adsorbed through the magnetic force, and the electromagnet is opened and closed through the movement control of electric board, and the force that the cutting tool received when cutting raw materials is alleviated through pneumatic damping device, make the material keep steady state, when conveying and shearing to different width material, avoided the deviation of material, made material pass rate improve.

Description

Technical Field

[0001] This utility model relates to the technical field of amorphous alloy material processing equipment, specifically a cutting device for amorphous composite strips. Background Technology

[0002] Amorphous composite ribbon is a special alloy material prepared by ultra-rapid cooling technology. As a new type of metallic material, it has shown unparalleled advantages over traditional materials in many fields due to its unique atomic arrangement structure. Unlike the long-range ordered structure of crystalline materials, the atoms inside amorphous ribbon are randomly distributed. This special microscopic feature endows it with excellent magnetic properties, mechanical properties and corrosion resistance, making it an important driving force for the upgrading of modern industry.

[0003] A search revealed that prior art publication number CN215698329U discloses an adjustable cross-cutting machine for cold-rolled stainless steel sheets. The machine includes a fixed plate with a conveyor belt on one side, a shearing assembly, and a receiving assembly. The shearing assembly is located inside the fixed plate, along with a connecting plate inside the fixed plate and a control cabinet on the outer surface of the fixed plate. The receiving assembly is located on one side of the conveyor belt and includes a support plate on one side of the conveyor belt, a support shaft at one end of the support plate, and a torsion spring on the outer surface of the support shaft. The control cabinet controls the start of a stepper motor, and the operating frequency of the stepper motor is adjusted as needed. The stepper motor then controls the connecting plate to rotate semi-circularly via its output shaft. When the steel sheet moves between the connecting plate and the crossbeam, the connecting plate drives the cutter to cut the steel sheet. After cutting, the steel sheet is conveyed to the next step via the conveyor belt, facilitating the cutting of cold steel.

[0004] The existing equipment has a fixed width during shearing, and changing product specifications requires stopping the machine to adjust the blades, which reduces production efficiency. In actual production, when feeding and shearing materials of different widths, the materials are prone to skew, resulting in edge cracking, burrs, and stress deformation. Therefore, based on the above research and in combination with the existing problems, a cutting device for amorphous composite strip is provided. Utility Model Content

[0005] The purpose of this invention is to provide a cutting device for amorphous composite strips to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cutting device for amorphous composite strip, comprising a bracket, a support plate fixedly mounted on the upper end of the bracket, a feed inlet on the side end of the support plate, a guide rail fixedly mounted on the upper end of the support plate near the feed inlet, a pneumatic pressure plate on the side end of the feed inlet away from the guide rail, a pressure plate on the lower end of the pneumatic pressure plate near the feed inlet, a positive iron plate and a negative iron plate on both ends of the guide rail, a fixed frame slidably mounted on the outer wall of the support plate, an upper blade holder slidably mounted on the side end of the fixed frame, a sliding block rotatably mounted on the end of the upper blade holder away from the fixed frame, and an adjusting motor fixedly mounted on the inner wall of the sliding block.

[0007] Furthermore, lead screws are symmetrically installed at both ends of the guide rail. A transmission motor is fixedly installed on the side of the lead screw near the feed inlet. An electric plate is fixedly installed on the upper end of the lead screw. A positive electromagnet is fixedly installed on the upper end of the electric plate, and the output end of the positive electromagnet is fixedly connected to the positive iron plate. A negative electromagnet is fixedly installed on the upper end of the electric plate away from the positive electromagnet, and the output end of the negative electromagnet is fixedly connected to the negative iron plate. A starting rod is fixedly installed on the upper end of the lead screw near the electric plate. A closing rod is fixedly installed on the upper end of the lead screw away from the electric plate. A start switch is fixedly installed on the upper end of the electric plate near the start rod. A close switch is fixedly installed on the upper end of the electric plate near the close rod.

[0008] Furthermore, a lifting motor is fixedly installed at the upper end of the upper tool holder, a worm gear is fixedly installed at the output end of the lifting motor, a lifting gear is rotatably installed at the end of the worm gear away from the upper tool holder, a lifting rack is fixedly installed at the end of the sliding block near the lifting gear, an adjusting gear is fixedly installed at the output end of the adjusting motor, a driven gear is rotatably installed at the upper end of the adjusting gear, a connecting column is fixedly installed at the end of the driven gear away from the sliding block, a cutting motor is fixedly installed at the end of the connecting column away from the sliding block, and an upper tool is fixedly installed at the output end of the cutting motor.

[0009] Furthermore, a lower tool holder is fixedly installed at the end of the lead screw away from the guide rail, a sliding block is slidably installed at the upper end of the lower tool holder, a tool motor is fixedly installed at the side end of the sliding block near the lead screw, a lower tool is fixedly installed at the output end of the tool motor, and a pneumatic shock absorber is fixedly installed between the tool motor and the lower tool.

[0010] Furthermore, an outlet is fixedly installed at the end of the guide rail away from the feed inlet, a detection plate is fixedly installed at the side end of the outlet, a controller is fixedly installed at the upper end of the detection plate, a control line is fixedly connected to the input end of the controller, and a thickness scanner is fixedly connected to the other end of the control line.

[0011] Furthermore, a detection motor is fixedly installed at the output end of the controller, a turntable is fixedly installed at the output end of the detection motor, an impact block is fixedly installed at the end of the turntable away from the detection motor, a fixing ring is fixedly installed at the upper end of the detection plate away from the detection motor, a sliding rod is slidably installed on the inner wall of the fixing ring, a protrusion is fixedly installed at the end of the sliding rod near the impact block, a return spring is fixedly connected at the end of the sliding rod near the fixing ring, a push plate is fixedly installed at the side end of the sliding rod near the detection plate, and a lower tool holder is fixedly installed at the side end of the detection plate away from the push plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model transmits magnetic force to an iron plate through positive and negative electromagnets, attracting materials through magnetic force. The movement of the electric plate controls the opening and closing of the electromagnets. The pneumatic damping device reduces the force on the cutting tool when cutting the raw material. The dynamic damping reduces the force on the lower cutting tool when cutting, keeping the material stable. When conveying and shearing materials of different widths, it avoids material deviation and improves the material qualification rate. 2. This utility model adjusts the motor to drive the spur gear to rotate, which in turn works with the driven gear to rotate the upper cutter to adjust the cutting angle. This eliminates the need to change cutters when cutting materials of different widths, thus improving production efficiency.

[0013] 3. This utility model adopts a servo drive module in conjunction with a high-precision linear guide rail to precisely control the shearing stroke and strip reference positioning. The intelligent control system consists of a laser thickness gauge, a PLC parameter calculation module, and a touch screen human-machine interface. After the material parameters are input on the touch screen, the system automatically sets the shearing gap, tool tilt angle, and clamping force based on the strip thickness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the transmission structure of this utility model; Figure 3 This is a schematic diagram of the material adsorption structure of this utility model; Figure 4 This is a schematic diagram of the lower cutting tool structure of this utility model; Figure 5 This is a schematic diagram of the upper cutting tool structure of this utility model; Figure 6 This is an exploded view of the upper cutting tool structure of this utility model; Figure 7 This is a schematic diagram of the detection structure of this utility model; Figure 8 This is an exploded schematic diagram of the detection structure of this utility model.

[0015] In the diagram: 1. Bracket; 2. Support plate; 3. Feed inlet; 4. Pneumatic pressure plate; 5. Guide rail; 6. Lead screw; 7. Fixing frame; 8. Upper tool holder; 9. Conveyor motor; 10. Positive electromagnet; 11. Electric plate; 12. Start switch; 13. Stop switch; 14. Start lever; 15. Positive iron plate; 16. Stop lever; 17. Lower tool holder; 18. Sliding block; 19. Tool motor; 20. Pneumatic shock absorber; 21. Lower tool; 22. Worm gear; 23. Lifting gear; 24. Cutting motor; 2 5. Upper cutter; 26. Discharge port; 27. Detection plate; 28. Controller; 29. ​​Detection motor; 30. Control line; 31. Thickness scanner; 32. Turntable; 33. Sliding rod; 34. Return spring; 35. Fixing ring; 36. Push plate; 37. Impact block; 38. Protrusion block; 39. Negative electromagnet; 40. Pressure plate; 41. Negative iron plate; 42. Adjusting motor; 43. Adjusting gear; 44. Driven gear; 45. Lifting rack; 46. Connecting column; 47. Lifting motor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Please refer to Figures 1 to 8 A cutting device for amorphous composite strip includes a bracket 1. A support plate 2 is fixedly installed on the upper end of the bracket 1. A feed inlet 3 is opened on the side end of the support plate 2. A guide rail 5 is fixedly installed on the upper end of the support plate 2 near the feed inlet 3. A pneumatic pressure plate 4 is provided on the side end of the feed inlet 3 away from the guide rail 5. A pressure plate 40 is provided on the lower end of the pneumatic pressure plate 4 near the feed inlet 3. A positive electrode plate 15 and a negative electrode plate 41 are provided at both ends of the guide rail 5 to ensure the flatness of the material. A fixed frame 7 is slidably installed on the outer wall of the support plate 2. An upper blade holder 8 is slidably installed on the side end of the fixed frame 7. A sliding block is rotatably installed on the end of the upper blade holder 8 away from the fixed frame 7. 18. An adjusting motor 42 for adjusting the blade angle is fixedly installed on the inner wall of the sliding block 18. The pneumatic pressure plate 4 is existing technology and will not be described in detail here. When processing materials, the pressure plate 40 flexibly presses the material passing through the feed port 3 to prevent the strip from deviating. When the material reaches the guide rail 5, the positive iron plate 15 attracts the material through positive magnetic force, and the negative iron plate 41 attracts the material more firmly to the positive iron plate 15 through negative magnetic force, so that the material remains stable during cutting. The adjusting motor 42 on the inner wall of the upper blade holder 8 drives the blade to rotate and adjust the angle, so that it does not need to change the blade when cutting materials of different widths.

[0018] Please see Figures 1-3 A lead screw 6 is symmetrically installed at both ends of the guide rail 5. A conveyor motor 9 is fixedly installed on the side end of the lead screw 6 near the feed inlet 3. An electric plate 11 is fixedly installed on the upper end of the lead screw 6. A positive electromagnet 10 is fixedly installed on the upper end of the electric plate 11, and the output end of the positive electromagnet 10 is fixedly connected to a positive iron plate 15. A negative electromagnet 39 is fixedly installed on the upper end of the electric plate 11 away from the positive electromagnet 10, and the output end of the negative electromagnet 39 is fixedly connected to a negative iron plate 41. A starting rod 14 is fixedly installed on the upper end of the lead screw 6 near the electric plate 11, and a closing rod 16 is fixedly installed on the upper end of the lead screw 6 away from the electric plate 11. A start switch 12 is fixedly installed on the upper end of the electric plate 11 near the start rod 14, and a closing switch 13 is fixedly installed on the upper end of the electric plate 11 near the closing rod 16. When the material reaches the guide rail 5, the positive electromagnet 1... The positive magnetic force is transmitted to the positive iron plate 15, which attracts the material. The negative electromagnet 39 transmits the negative magnetic force to the negative iron plate 41, which makes the material more firmly attracted to the positive iron plate 15. After the conveyor motor 9 starts, the electric plate 11 moves, which moves the material toward the cutter. When the electric plate 11 reaches the end of the lead screw 6, the switch 13 closes and strikes the closing rod 16, causing the positive electromagnet 10 and the negative electromagnet 39 to close and lose their magnetic force. The positive iron plate 15 and the negative iron plate 41 stop attracting the material and transport the material to the next process. When the conveyor motor 9 returns the electric plate 11 to the initial position, the start switch 12 strikes the start rod 14, which turns on the positive electromagnet 10 and the negative electromagnet 39 and restores their magnetic force. The positive iron plate 15 and the negative iron plate 41 continue to attract the material.

[0019] Please see Figures 4-6A lifting motor 47 is fixedly installed at the upper end of the upper tool holder 8. A worm gear 22 is fixedly installed at the output end of the lifting motor 47. A lifting gear 23 is rotatably installed at the end of the worm gear 22 away from the upper tool holder 8, and the worm gear 22 and the lifting gear 23 are meshed. A lifting rack 45 is fixedly installed at the end of the sliding block 18 near the lifting gear 23, and the lifting rack 45 is meshed with the lifting gear 23. An adjusting gear 43 is fixedly installed at the output end of the adjusting motor 42. A driven gear 44 is rotatably installed at the upper end of the adjusting gear 43, and the adjusting gear 43 and the driven gear 44 are meshed. A connecting post 46 is fixedly installed at the end of the driven gear 44 away from the sliding block 18. A cutting motor 24 is fixedly installed at one end of the moving block 18, and an upper cutter 25 is fixedly installed at the output end of the cutting motor 24. When the material moves to the bottom of the upper cutter holder 8, the lifting motor 47 starts to rotate the worm gear 22. The worm gear 22 drives the lifting gear 23 to rotate, which in turn drives the lifting rack 45 to move the sliding block 18 downward. The cutting motor 24 starts to rotate the upper cutter 25, which then cuts the material. The adjusting motor 42 starts to rotate the adjusting gear 43, which in turn drives the driven gear 44 to rotate. The driven gear 44 drives the cutting motor 24 and the upper cutter 25 to rotate through the connecting column 46, thus adjusting the cutting angle of the upper cutter 25 so that it can cut materials of different widths without changing the cutter.

[0020] Please see Figures 4-6 A lower blade holder 17 is fixedly installed at the end of the lead screw 6 away from the guide rail 5. A sliding block 18 is slidably installed at the upper end of the lower blade holder 17. A blade motor 19 is fixedly installed at the side end of the sliding block 18 near the lead screw 6. A lower blade 21 is fixedly installed at the output end of the blade motor 19. A pneumatic damper 20 is fixedly installed between the blade motor 19 and the lower blade 21. The pneumatic damper 20 is existing technology and will not be described in detail here. When the material moves to the lower blade holder 17, the blade motor 19 starts to make the lower blade 21 rotate to cut the material. When the upper blade 25 moves downward to cut the material, the force generated causes the material at one end of the lower blade 21 to bounce up. The pneumatic damper 20 reduces the force on the lower blade 21 and keeps the material in a stable state.

[0021] Please see Figure 7 , Figure 8 A discharge port 26 is fixedly installed at the end of the guide rail 5 away from the feed port 3. A detection plate 27 is fixedly installed at the side end of the discharge port 26. A controller 28 is fixedly installed at the upper end of the detection plate 27. A control line 30 is fixedly connected to the input end of the controller 28. A thickness scanner 31 is fixedly connected to the other end of the control line 30. The thickness scanner 31 and the controller 28 are existing technologies and will not be described in detail here. After the material is cut, the material moves to the discharge port 26 and the thickness scanner 31 detects it. If the size does not meet the requirements, the thickness scanner 31 transmits the information to the controller 28 through the control line 30.

[0022] Please see Figure 7 , Figure 8 A detection motor 29 is fixedly installed at the output end of the controller 28. A turntable 32 is fixedly installed at the output end of the detection motor 29. An impact block 37 is fixedly installed at the end of the turntable 32 away from the detection motor 29. A fixing ring 35 is fixedly installed at the upper end of the detection plate 27 away from the detection motor 29. A sliding rod 33 is slidably installed on the inner wall of the fixing ring 35. A protrusion 38 is fixedly installed at the end of the sliding rod 33 near the impact block 37. A return spring 34 is fixedly connected to the end of the sliding rod 33 near the fixing ring 35, and the other end of the return spring 34 is fixedly connected to... A push plate 36 is fixedly installed on the side end of the sliding rod 33 near the detection plate 27, and a lower knife holder 17 is fixedly installed on the side end of the detection plate 27 away from the push plate 36. When the controller 28 receives the information, the controller 28 starts the detection motor 29 to drive the turntable 32 and the impact block 37 to rotate one revolution, so that the impact block 37 hits the protrusion block 38. The protrusion block 38 is subjected to force, which causes the sliding rod 33 to move and the return spring 34 to shorten. The sliding rod 33 drives the push plate 36 to push the unqualified product to the lower knife holder 17 and send the material to the isolation area.

[0023] It should be noted that the control system of this device operates by using a servo drive module in conjunction with a high-precision linear guide to precisely control the shearing stroke and strip reference positioning. The intelligent control system consists of a laser thickness gauge, a PLC parameter calculation module, and a touch screen human-machine interface. After the material parameters are input on the touch screen, the system automatically sets the shearing gap, tool tilt angle, and clamping force based on the strip thickness.

[0024] Working principle: When processing materials, the materials reach the guide rail 5 through the feed inlet 3. The positive electromagnet 10 transmits positive magnetic force to the positive iron plate 15, which attracts the materials. The negative electromagnet 39 transmits negative magnetic force to the negative iron plate 41, which makes the materials more firmly attracted to the positive iron plate 15. After the conveyor motor 9 starts, it moves the electric plate 11, which moves the materials towards the cutter. When the electric plate 11 reaches the wire... When the lever 6 reaches its end, the switch 13 closes and strikes the closing lever 16, causing the positive electromagnet 10 and the negative electromagnet 39 to close and lose their magnetic force. The positive iron plate 15 and the negative iron plate 41 stop adsorbing the material and transport the material to the next process. When the conveyor motor 9 returns the electric plate 11 to its initial position, the start switch 12 strikes the start lever 14, causing the positive electromagnet 10 and the negative electromagnet 39 to open and regain their magnetic force. The positive iron plate 15 and the negative iron plate 41 continue to adsorb and transport the material.

[0025] When the material moves to below the upper blade holder 8, the lifting motor 47 starts, causing the worm gear 22 to rotate. The worm gear 22 drives the lifting gear 23 to rotate, causing the lifting rack 45 to move the sliding block 18 downward. The cutting motor 24 starts, driving the upper blade 25 to rotate, so that the upper blade 25 cuts the material. The adjusting motor 42 starts, causing the adjusting gear 43 to rotate, which drives the driven gear 44 to rotate. The driven gear 44 drives the cutting motor 24 and the upper blade 25 to rotate through the connecting column 46, adjusting the cutting angle of the upper blade 25 so that it does not need to change the blade when cutting materials of different widths. When the material moves to the lower blade holder 17, the blade motor 19 starts, causing the lower blade 21 to rotate and cut the material. When the upper blade 25 moves downward to cut the material, the force generated causes the material at one end of the lower blade 21 to bounce up. The pneumatic damping 20 reduces the force on the lower blade 21, keeping the material in a stable state.

[0026] After the material is cut, it moves to the discharge port 26. The thickness scanner 31 inspects it. If the size does not meet the requirements, the thickness scanner 31 transmits the information to the controller 28 through the control line 30. The controller 28 starts the detection motor 29 to drive the turntable 32 and the impact block 37 to rotate one revolution, so that the impact block 37 hits the protrusion block 38. The protrusion block 38 is subjected to force, which causes the sliding rod 33 to move and the return spring 34 to shorten. The sliding rod 33 drives the push plate 36 to push the unqualified product to the lower cutter holder 17 and send the material to the isolation area.

[0027] 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 scope of the technology 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 cutting device for amorphous composite strip, comprising a support (1), characterized in that: A support plate (2) is fixedly installed on the upper end of the bracket (1). A feed inlet (3) is opened on the side end of the support plate (2). A guide rail (5) is fixedly installed on the upper end of the support plate (2) near the feed inlet (3). A pneumatic pressure plate (4) is provided on the side end of the feed inlet (3) away from the guide rail (5). A pressure plate (40) is provided on the lower end of the pneumatic pressure plate (4) near the feed inlet (3). A positive iron plate (15) and a negative iron plate (41) are provided at both ends of the guide rail (5). A fixed frame (7) is slidably installed on the outer wall of the support plate (2). An upper knife holder (8) is slidably installed on the side end of the fixed frame (7). A sliding block (18) is rotatably installed on the end of the upper knife holder (8) away from the fixed frame (7). An adjusting motor (42) is fixedly installed on the inner wall of the sliding block (18).

2. The cutting device for amorphous composite strip according to claim 1, characterized in that: The guide rail (5) is symmetrically equipped with lead screws (6) at both ends. A transmission motor (9) is fixedly installed on the side end of each lead screw (6) near the feed inlet (3). An electric plate (11) is fixedly installed on the upper end of each lead screw (6). A positive electromagnet (10) is fixedly installed on the upper end of the electric plate (11), and the output end of the positive electromagnet (10) is fixedly connected to the positive iron plate (15). A negative electromagnet (39) is fixedly installed on the upper end of the electric plate (11) away from the positive electromagnet (10). The output end of the negative electromagnet (39) is fixedly connected to the negative iron plate (41). The upper end of the lead screw (6) near the electric plate (11) is fixedly equipped with a starting rod (14). The upper end of the lead screw (6) away from the electric plate (11) is fixedly equipped with a closing rod (16). The upper end of the electric plate (11) near the starting rod (14) is fixedly equipped with a starting switch (12). The upper end of the electric plate (11) near the closing rod (16) is fixedly equipped with a closing switch (13).

3. The cutting device for amorphous composite strip according to claim 2, characterized in that: A lifting motor (47) is fixedly installed at the upper end of the upper tool holder (8). A worm gear (22) is fixedly installed at the output end of the lifting motor (47). A lifting gear (23) is rotatably installed at the end of the worm gear (22) away from the upper tool holder (8). A lifting rack (45) is fixedly installed at the end of the sliding block (18) near the lifting gear (23). An adjusting gear (43) is fixedly installed at the output end of the adjusting motor (42). A driven gear (44) is rotatably installed at the upper end of the adjusting gear (43). A connecting column (46) is fixedly installed at the end of the driven gear (44) away from the sliding block (18). A cutting motor (24) is fixedly installed at the end of the connecting column (46) away from the sliding block (18). An upper tool (25) is fixedly installed at the output end of the cutting motor (24).

4. The cutting device for amorphous composite strip according to claim 3, characterized in that: The lower tool holder (17) is fixedly installed at the end of the lead screw (6) away from the guide rail (5). A sliding block (18) is slidably installed at the upper end of the lower tool holder (17). A tool motor (19) is fixedly installed at the side end of the sliding block (18) near the lead screw (6). A lower tool (21) is fixedly installed at the output end of the tool motor (19). A pneumatic shock absorber (20) is fixedly installed between the tool motor (19) and the lower tool (21).

5. The cutting device for amorphous composite strip according to claim 4, characterized in that: The guide rail (5) is fixedly installed with an outlet (26) at one end away from the feed inlet (3). A detection plate (27) is fixedly installed on the side end of the outlet (26). A controller (28) is fixedly installed on the upper end of the detection plate (27). A control line (30) is fixedly connected to the input end of the controller (28). A thickness scanner (31) is fixedly connected to the other end of the control line (30).

6. The cutting device for amorphous composite strip according to claim 5, characterized in that: A detection motor (29) is fixedly installed at the output end of the controller (28). A turntable (32) is fixedly installed at the output end of the detection motor (29). An impact block (37) is fixedly installed at the end of the turntable (32) away from the detection motor (29). A fixing ring (35) is fixedly installed at the upper end of the detection plate (27) away from the detection motor (29). A sliding rod (33) is slidably installed on the inner wall of the fixing ring (35). A protrusion (38) is fixedly installed at the end of the sliding rod (33) near the impact block (37). A reset spring (34) is fixedly connected at the end of the sliding rod (33) near the fixing ring (35). A push plate (36) is fixedly installed at the side end of the sliding rod (33) near the detection plate (27). A lower tool holder (17) is fixedly installed at the side end of the detection plate (27) away from the push plate (36).

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