Elastic sheet punching and shearing device

Abstract

The utility model provides an elastic sheet punching and shearing device which solves the technical problems that an automatic punching and shearing device special for a triangular elastic sheet does not exist in an existing punching and shearing device, manual assistance is needed in the using process, and the inclined cutting efficiency is low, and can be widely applied to the field of motor part machining. The pre-pressing device specifically comprises a bottom plate, a movable frame and a pre-pressing mechanism are arranged on the bottom plate, the pre-pressing mechanism comprises a pre-pressing motor, an output shaft of the pre-pressing motor is connected with a pre-pressing block, the end of the pre-pressing block is provided with a guide inclined face, and the pre-pressing block is matched with the movable frame so that when the pre-pressing block moves along with an output shaft of a pre-pressing air cylinder, the guide inclined face can move along with the output shaft of the pre-pressing air cylinder. The movable frame can be driven to move in the vertical direction due to the height difference of the guide inclined surfaces; and a shearing motor is further arranged on the bottom plate, an output shaft of the shearing motor is connected with a shearing block, a notch is formed in the middle of the shearing block, and the notch is matched with the pre-pressing block, so that the pre-pressing block can move along the interior of the notch of the shearing block.

Description

Technical Field

[0001] This utility model belongs to the field of motor parts processing technology, and specifically relates to a spring sheet punching and shearing device. Background Technology

[0002] After the central shaft assembly process is completed, triangular springs are installed on the motor gearbox to facilitate the subsequent installation of the micro-motor rotor. Currently, for ease of transportation, the triangular springs produced on the production line are arrayed on the conveyor belt, requiring them to be cut off. However, existing punching and shearing equipment lacks a dedicated automatic punching and shearing device for these triangular springs, necessitating manual assistance and resulting in low cutting efficiency.

[0003] For example, Chinese utility model patent CN216989417U discloses a metal spring punching die, including a base and an upper support. The base has a motor inside and two pushing components for loading and unloading. The upper end of the base has two templates for placing the metal springs to be processed. The lower end of the upper support has two punching machines for punching the metal springs. The motor drives the two pushing components to move horizontally relative to each other through a transmission component. At the same time, the motor drives the two punching machines to move vertically relative to each other through the transmission component. The motor drives the two pushing components and the two punching machines to move relative to each other simultaneously through the transmission component. The motor drives the right pushing component to push inward, pushing the metal spring to be processed onto the front template. At the same time, the motor drives the punching machine to descend and contact the metal spring for punching.

[0004] Although the above-mentioned device can meet the basic requirements of punching and shearing, operations such as determining the cutting position and continuous feeding at the punching and shearing station are still done manually. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned technology and provide a spring clipping and shearing device.

[0006] Therefore, this utility model provides a spring clipping and shearing device, including a base plate, a movable frame on the base plate, and a pre-pressing mechanism on the base plate. The pre-pressing mechanism includes a pre-pressing motor, a pre-pressing block connected to the output shaft of the pre-pressing motor, and a guide slope at the end of the pre-pressing block. The pre-pressing block cooperates with the movable frame so that when the pre-pressing block moves with the output shaft of the pre-pressing cylinder, the movable frame will move vertically due to the height difference of the guide slope.

[0007] Furthermore, a shearing motor is also provided on the base plate, and a shearing block is connected to the output shaft of the shearing motor. A slot is opened in the middle of the shearing block, and the slot is adapted to the pre-compression block, so that the pre-compression block can move along the inside of the slot of the shearing block.

[0008] Furthermore, the movable frame is equipped with rollers that abut against the guide arc surface. When the height of the rollers at the contact point with the guide arc surface changes, the rollers drive the movable frame to move in the vertical direction.

[0009] Furthermore, a lower punch is connected to the movable frame, and a pre-compression column is also provided on the lower punch. The distance between the pre-compression column and the center hole of the triangular spring is equal to the height difference of the guide slope in the vertical direction, so that after the pre-compression block drives the movable frame to rise, the pre-compression column can be inserted into the center hole of the triangular spring.

[0010] Furthermore, an upper support is also provided on the base plate, and a first cylinder is provided on the upper support. The first cylinder provides the driving force for horizontal movement. A transverse plate is connected to the output shaft of the first cylinder, and a second cylinder is connected to the transverse plate. The second cylinder provides the driving force for vertical movement. A lifting plate is connected to the output shaft of the second cylinder, and a positioning pin is provided on the lifting plate. Through the vertical output of the second cylinder, the positioning pin can be inserted into the material strip hole. Through the horizontal output of the first cylinder, the positioning pin can drive the material strip to move towards the punching and shearing station after being inserted into the material strip hole.

[0011] Furthermore, a material feed chute is provided on the upper support, and a pressure plate is provided on one side of the material feed chute. The pressure plate presses the material strip onto the side of the material feed chute, so that the triangular spring can be suspended inside the material feed chute.

[0012] This utility model provides a spring clip punching and shearing device, which has the following beneficial effects:

[0013] The positioning and transportation of the material strip are achieved through the cooperation of the first and second cylinders; the pre-compression and shearing of the material strip are achieved through the cooperation of the pre-compression cylinder and the shearing cylinder, completing the punching and shearing of the triangular spring strip in a fully mechanized manner with high cutting efficiency. By setting rollers on the movable frame, when the pre-compression block or shearing block is lifted, the rotation of the rollers reduces the friction on the pre-compression block or shearing block, so that most of the horizontal driving force of the cylinder is converted into the vertical upward movement of the movable frame, resulting in high energy conversion efficiency. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention;

[0015] Figure 2 This is a structural diagram of the front of the support plate of this utility model;

[0016] Figure 3 This is a structural diagram of the back of the support plate of this utility model;

[0017] Figure 4 This is a structural diagram of the top surface surrounding the support plate of this utility model;

[0018] Figure 5This is a structural diagram of the area surrounding the upper tool holder of this utility model;

[0019] Figure 6 This is a structural diagram of the preload column of this utility model;

[0020] Figure 7 This is a structural diagram of the surrounding area of ​​the movable frame of this utility model;

[0021] Figure 8 This is a structural diagram of the area surrounding the guide block of this utility model;

[0022] The markings in the diagram are: 1. Base plate; 2. Column; 3. Upper support plate; 4. Support plate; 5. First cylinder; 6. Horizontal movement plate; 7. Second cylinder; 8. Lifting plate; 9. Mounting plate; 10. Positioning column; 11. Pressure plate; 12. Material strip; 13. Material strip hole; 14. Triangular spring; 15. Pre-compression cylinder; 16. Pre-compression block; 17. Guide slope; 18. Guide block; 19. Guide groove; 20. Movable frame; 21. Guide column; 22. Lower punch; 23. Upper punch; 24. Roller; 25. Pre-compression column; 26. Shearing cylinder; 27. Shearing block; 28. Guide arc surface; 29. ​​First slide rail; 30. First slider; 31. Second slide rail; 32. Second slider; 33. Material passage groove; 34. Upper knife holder; 35. Lower knife holder. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] like Figure 1 As shown, this utility model provides a spring sheet punching and shearing device, including a base plate 1, four columns 2 are fixedly connected to the middle of the base plate 1, the four columns 2 are distributed in a rectangular shape, and an upper support plate 4 is fixedly connected to the top of the columns 2.

[0025] like Figure 2 As shown, a support plate 5 is fixedly connected to the side wall of the upper support plate 4. The support plate 5 is perpendicular to the support plate 4. A first cylinder 5 is connected to the upper support plate 4. The output shaft of the first cylinder 5 outputs a driving force for horizontal movement. A transverse plate 6 is fixedly connected to the output shaft of the first cylinder 5. The transverse plate 6 is a right-angled plate. The side plate of the transverse plate 6, which is not connected to the output shaft of the first cylinder 5, slides horizontally parallel to the side wall of the first cylinder 5. Figure 3 As shown, the first cylinder 5 is not connected to the support plate 5 and has two first slide rails 29 protruding from the side wall. The transverse plate 6 is in contact with the first cylinder 5 and has two first sliders 30. The first sliders 30 are engaged with the first slide rails 29 and move horizontally along the first slide rails 29.

[0026] like Figure 4 As shown, a second cylinder 7 is connected to the side wall of the transverse plate 6 that is not in contact with the first cylinder 5. The output shaft of the second cylinder 7 outputs a driving force for vertical movement. A lifting plate 8 is fixedly connected to the output shaft of the second cylinder 5. The lifting plate 8 is a right-angle plate, and the side plate of the lifting plate 8 that is not connected to the output shaft of the second cylinder 7 slides vertically parallel to the side wall of the second cylinder 7. A second slide rail 31 is provided on the side wall of the second cylinder 7 that is not connected to the transverse plate 6. A second slider 32 is provided on the side wall of the lifting plate 8 that is in contact with the second cylinder 7. The second slider 32 engages with the second slide rail 29 and moves vertically along the second slide rail 29.

[0027] like Figure 2 As shown, a mounting plate 9 is horizontally connected to the bottom surface of the lifting plate 8, and a positioning post 10 is vertically connected to the bottom surface of the mounting plate 9. The positioning post 10 is used to pass through the material belt hole 13 on the material belt 12 to provide precise positioning for the subsequent punching and shearing action of the material belt 12.

[0028] like Figure 5 As shown, the upper support plate 3 is rectangular, and a material passage 33 is formed at the midpoint of the short side of the rectangle, penetrating the upper support plate 3. The width of the material passage 33 is greater than the width of the strip 12, ensuring that the strip 12 is not obstructed by the wall of the material passage 33 when it moves along the material passage 33. A pressure plate 11 is connected to the side of the material passage 33 near the strip hole 13. The side wall of the pressure plate 11 near the material passage 33 is on the same vertical plane as the wall of the material passage 33. The pressure plate 11 is used to press and release the strip with the strip hole 13, so that the triangular spring 14 connected to the strip 12 is suspended in the material passage 33, facilitating subsequent punching and shearing operations on the strip 12.

[0029] like Figure 7 As shown, one end of the base plate 1 is connected to a pre-compression cylinder 15, and the other end is connected to a shearing cylinder 26. The output shafts of the pre-compression cylinder 15 and the shearing cylinder 26 are arranged facing each other. Figure 8 As shown, a guide block 18 is connected to the base plate 1 between the pre-compression cylinder 15 and the shearing cylinder 26, and below the upper support plate 3. The guide block 18 is rectangular, and a guide groove 19 is formed at the midpoint of the short side of the rectangle, penetrating both ends of the guide block 18. A pre-compression block 16 is connected to the output shaft of the pre-compression cylinder 15, and a shearing block 27 is connected to the output shaft of the shearing cylinder 26. The shearing block 27 is adapted to the guide groove 19, allowing it to move along the inside of the guide groove 19. A slot is formed in the middle of the shearing block 27, which is adapted to the pre-compression block 16, allowing the pre-compression block 16 to move along the inside of the slot of the shearing block 27.

[0030] like Figure 7As shown, guide posts 21 are connected to both sides of the top surface of guide block 18, and a movable frame 20 that can be raised and lowered is fitted on the guide posts 21. Rollers 24 are provided on the bottom surface of the movable frame 20. The rollers 24 correspond to the slots of the shearing block 27 in the vertical direction, and the thickness of the rollers 24 is greater than the width of the slots of the shearing block 27. A lower blade holder 35 is connected to the top surface of the movable frame 20, and a lower punch 22 is connected to the lower blade holder 35. The lower punch 22 is in the shape of a quadrangular prism. In the conveying direction of the material belt 12, behind the positioning post 10, a through slot is also provided on the upper support plate 3, which runs through both the upper and lower surfaces of the upper support plate 3. The position of the through slot corresponds to the movable frame 20, so that the movable frame 20 can be raised and lowered within the through slot.

[0031] like Figure 6 As shown, on the side corresponding to and away from the lower punch 22, an upper blade holder 34 is connected to the feed chute 33. An upper punch 23 is mounted at the end of the upper blade holder 34. The two opposing surfaces of the upper punch 23 and the lower punch 22 are located on the same vertical plane, creating a shearing force when the upper punch 23 contacts the lower punch 22, cutting the triangular spring 14 from the material strip 12. A pre-pressure column 25 is connected to the top surface of the lower punch 22. The pre-pressure column 25 passes through the center hole of the triangular spring 14, ensuring that the upper punch 23 and the lower punch 22 can complete the shearing action normally.

[0032] like Figure 8 As shown, one end of the pre-compression block 16 is provided with a downwardly inclined guide slope 17, and one end of the shearing block 27 is provided with an inwardly concave guide arc surface 28. The guide arc surface 28 covers the shearing process of the lower punch 22 and the upper punch 23 in the vertical direction change area, so that when the roller 24 passes through the vertical direction change area of ​​the guide arc surface 28, the inclination of the guide arc surface 28 continuously increases, the rising speed of the movable frame 20 will be accelerated, and thus the punching and shearing action of the lower punch 22 and the upper punch 23 will be faster, the punching and shearing cut of the triangular spring 14 will be smoother, and the finished product qualification rate of the triangular spring 14 will be greatly improved. The top surface height of the pre-compression block 16 is between the highest and lowest top surfaces of the shearing block 27, so that after the pre-compression block 16 initially raises the height of the movable frame 20, the shearing block 27 can further raise the height of the movable frame 20.

[0033] In the initial state, the strip 12 is placed along the feed trough 33 and below the pressure plate 11, so that the triangular spring 14 is suspended inside the feed trough 33; the center hole of the first triangular spring 14 on the strip 12 to be punched and sheared is located directly above the pre-pressing column 25. At this time, the output shaft of the first cylinder 5 is in a shorter state, and the positioning column 10 is located directly above the strip hole 13; the movable frame 4 is at the lowest point, and the roller 24 is in contact with the guide arc surface 28.

[0034] During punching and shearing, the output shaft of the second cylinder 7 extends, driving the lifting plate 8 to move closer to the material strip 12, so that the positioning pin 10 is inserted into the material strip hole 13 to position the material strip 12. Then, the output shaft of the pre-pressure cylinder 15 extends, driving the pre-pressure block 16 to move closer to the roller 24. When the roller 24 contacts the guide inclined surface 17, the movable frame 20 rises evenly, and the pre-pressure pin 16 enters the center hole of the triangular spring piece 14, ensuring that the upper punch 23 and the lower punch 22 can complete the punching and shearing action. Afterward, the output shaft of the shearing cylinder 26 extends, driving the shearing block 27 to move closer to the roller 24. When the roller 24 contacts the vertical change area of ​​the guide arc surface 28, the rising speed of the movable frame 20 gradually increases, and the lower punch 22 and the upper punch 23 cooperate to quickly punch and shear, cutting the triangular spring piece 14 from the material strip 12. Then, the cut triangular spring piece 14 is removed by other clamping devices. Then the output shafts of the pre-compression cylinder 15 and the shearing cylinder 26 shorten, and the movable frame 20 falls back to its initial state under its own gravity; finally, the output shaft of the first cylinder 7 extends, and the positioning column 10 drives the material belt 12 to move towards the upper punch 23. When the center hole of the next triangular spring piece 14 to be sheared moves above the pre-compression column 25, the first cylinder 7 stops extending and prepares for the next round of punching and shearing.

[0035] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A spring clipping and shearing device, comprising a base plate, wherein a movable frame is provided on the base plate, characterized in that, The base plate is also equipped with a pre-compression mechanism, which includes a pre-compression motor. A pre-compression block is connected to the output shaft of the pre-compression motor. A guide slope is provided at the end of the pre-compression block. The pre-compression block cooperates with the movable frame so that when the pre-compression block moves with the output shaft of the pre-compression cylinder, the movable frame will move vertically due to the height difference of the guide slope.

2. The spring-loaded punching and shearing device according to claim 1, characterized in that, The base plate is also equipped with a shearing motor, and a shearing block is connected to the output shaft of the shearing motor. A slot is opened in the middle of the shearing block, and the slot is adapted to the pre-compression block, so that the pre-compression block can move along the inside of the slot of the shearing block.

3. The spring clipping and shearing device according to claim 1 or 2, characterized in that, The movable frame is equipped with rollers that abut against the guide arc surface. When the height of the rollers changes at the contact point with the guide arc surface, the rollers drive the movable frame to move in the vertical direction.

4. The spring clipping and shearing device according to claim 3, characterized in that, The movable frame is connected to a lower punch, and a pre-compression column is also provided on the lower punch. The distance between the pre-compression column and the center hole of the triangular spring is equal to the height difference of the guide slope in the vertical direction, so that after the pre-compression block drives the movable frame to rise, the pre-compression column can be inserted into the center hole of the triangular spring.

5. The spring-loaded punching and shearing device according to claim 3, characterized in that, The base plate is also equipped with an upper support, on which a first cylinder is mounted, providing the driving force for horizontal movement. A transverse plate is connected to the output shaft of the first cylinder, and a second cylinder is connected to the transverse plate, providing the driving force for vertical movement. A lifting plate is connected to the output shaft of the second cylinder, and a positioning pin is mounted on the lifting plate. The vertical output of the second cylinder allows the positioning pin to be inserted into the strip hole. The horizontal output of the first cylinder allows the positioning pin to drive the strip towards the punching and shearing station after it is inserted into the strip hole.

6. The spring-loaded punching and shearing device according to claim 1, characterized in that, The upper support also has a material feed chute, and a pressure plate is set on one side of the material feed chute. The pressure plate presses the material strip onto the side of the material feed chute, so that the triangular spring can be suspended inside the material feed chute.

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