Elastic sheet punching and shearing device

Abstract

The invention 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 use, and the inclined cutting efficiency is low, and can be widely applied to the field of motor part machining. The device specifically comprises a bottom plate, an upper support is arranged on the bottom plate, an upper stamping knife is arranged on the upper support, a shearing mechanism is further arranged on the bottom plate, the shearing mechanism comprises a movable frame, a lower stamping knife is arranged on the movable frame, the lower stamping knife synchronously moves along with the movable frame, and the end face of the upper stamping knife and the end face of the lower stamping knife are matched to form a scissor-shaped structure to punch and shear a material belt. The shearing mechanism further comprises a shearing air cylinder, an output shaft of the shearing air cylinder is connected with a shearing block, a guide arc face is arranged at the end of the shearing block, and the shearing block is matched with the movable frame, so that when the shearing block moves along with the output shaft of the shearing air cylinder, the movable frame can be driven to move in the vertical direction due to the height difference of the guide arc face.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor part processing, and particularly relates to a shrapnel punching and shearing device. Background Art

[0002] After the motor reduction box completes the central shaft assembly process, a triangular shrapnel is installed on the central shaft for subsequent installation of the micro-motor rotor. Currently, for convenient transportation, the triangular shrapnels produced by the production line are arranged in an array on the tape, and the triangular shrapnels need to be cut from the tape. In the existing punching and shearing devices, there is no dedicated automatic punching and shearing device for triangular shrapnels, and manual assistance is required during use, resulting in low cutting efficiency.

[0003] For example, the Chinese utility model patent with the publication number CN216989417U discloses a metal shrapnel punching die, which includes a base and an upper support seat. A motor is arranged inside the base, and two pushing components for feeding and discharging are arranged on the base. Two templates for placing the metal shrapnels to be processed are arranged at the upper end of the base. Two punching machines for punching and processing the metal shrapnels are arranged at the lower end of the upper support seat. 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. The motor drives the right pushing component to push inward, pushing the metal shrapnel to be processed onto the front template. At the same time, the motor drives the punching machine to descend through the transmission component to contact the metal shrapnel for punching and processing.

[0004] Although the above 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 completed manually. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical deficiencies and provide a shrapnel punching and shearing device.

[0006] To this end, the present invention provides a shrapnel punching and shearing device, which includes a bottom plate. An upper support is arranged on the bottom plate, and an upper punching knife is arranged on the upper support. A shearing mechanism is also arranged on the bottom plate. The shearing mechanism includes a movable frame, and a lower punching knife is arranged on the movable frame. The lower punching knife moves synchronously with the movable frame. The end faces of the upper punching knife and the lower punching knife cooperate to form a scissor-shaped structure for punching and shearing the tape.

[0007] Further, the shearing mechanism further includes a shearing cylinder. A shearing block is connected to the output shaft of the shearing cylinder. A guiding arc surface is arranged at the end of the shearing block. The shearing block cooperates with the movable frame, so that when the shearing block moves along with the output shaft of the shearing cylinder, the movable frame will drive the movable frame to move in the vertical direction due to the height difference of the guiding arc surface.

[0008] Furthermore, the changing area of the guiding arc surface in the vertical direction covers the shearing process of the lower punching knife and the upper punching knife, making the shearing process faster.

[0009] Furthermore, a preloading mechanism is also provided on the bottom plate. The preloading mechanism includes a preloading motor. A preloading block is connected to the output shaft of the preloading motor. A guiding inclined surface is provided at the end of the preloading block. The preloading block cooperates with the movable frame, so that when the preloading block follows the output shaft of the preloading cylinder to move, the movable frame will drive the movable frame to move in the vertical direction due to the height difference of the guiding inclined surface.

[0010] Furthermore, a notch is formed in the middle of the shearing block. The notch is adapted to the preloading block, so that the preloading block can move along the inside of the notch of the shearing block.

[0011] Furthermore, rollers are provided on the movable frame. The rollers are in contact with the guiding arc surface. When there is a height change at the contact position between the rollers and the guiding arc surface, the rollers drive the movable frame to move in the vertical direction.

[0012] Furthermore, a preloading column is also provided on the lower punching knife. The distance between the preloading column and the central hole of the triangular elastic piece is equal to the height difference of the guiding inclined surface in the vertical direction, so that after the preloading block drives the movable frame to rise, the preloading column can be inserted into the central hole of the triangular elastic piece.

[0013] Furthermore, a first cylinder is also provided on the upper bracket. The first cylinder provides the driving force for horizontal movement; a cross-moving plate is connected to the output shaft of the first cylinder. A second cylinder is connected to the cross-moving plate. The second cylinder provides the driving force for vertical movement; the output shaft of the second cylinder is connected to a lifting plate. Positioning columns are provided on the lifting plate. Through the vertical output of the second cylinder, the positioning columns can be inserted into the material tape holes; through the horizontal output of the first cylinder, after the positioning columns are inserted into the material tape holes, they can drive the material tape to move towards the punching and shearing station.

[0014] Furthermore, a material passing groove is also formed on the upper bracket. A pressing plate is provided on one side of the material passing groove. The pressing plate presses the material tape on the side of the material passing groove, so that the triangular elastic piece can be suspended inside the material passing groove.

[0015] The present invention provides a device for punching and shearing elastic pieces, which has the following beneficial effects:

[0016] Through the cooperation of the first cylinder and the second cylinder, the positioning and transportation of the material tape are realized; through the cooperation of the preloading cylinder and the shearing cylinder, the preloading and shearing of the material tape are realized, and the punching and shearing of the material tape of the triangular elastic piece are completed fully mechanized, with high cutting efficiency. By providing rollers on the movable frame, when the preloading block or the shearing block jacks up the movable frame, the self-rotation of the rollers can reduce the friction force received by the preloading block or the shearing block, so that most of the horizontal driving force of the cylinder is converted into the upward movement of the movable frame in the vertical direction, and the energy conversion efficiency is high. Description of the Drawings

[0017] Figure 1 is the structural diagram of the present invention;

[0018] Figure 2 is the structural diagram of the front side around the support plate of the present invention;

[0019] Figure 3 is the structural diagram of the back side around the support plate of the present invention;

[0020] Figure 4 is the structural diagram of the top side around the support plate of the present invention;

[0021] Figure 5 is the structural diagram around the upper tool rest of the present invention;

[0022] Figure 6 is the structural diagram around the preloading column of the present invention;

[0023] Figure 7 is the structural diagram around the movable frame of the present invention;

[0024] Figure 8 is the structural diagram around the guide block of the present invention;

[0025] Markings in the figure: 1, bottom plate; 2, column; 3, upper support plate; 4, support plate; 5, first cylinder; 6, transverse movement plate; 7, second cylinder; 8, lifting plate; 9, mounting plate; 10, positioning column; 11, pressing plate; 12, strip; 13, strip hole; 14, triangular elastic sheet; 15, preloading cylinder; 16, preloading block; 17, guiding inclined surface; 18, guide block; 19, guiding groove; 20, movable frame; 21, guide post; 22, lower punching knife; 23, upper punching knife; 24, roller; 25, preloading column; 26, shearing cylinder; 27, shearing block; 28, guiding arc surface; 29, first slide rail; 30, first slider; 31, second slide rail; 32, second slider; 33, material passing groove; 34, upper tool rest; 35, lower tool rest. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0027] As Figure 1 shown, the present invention provides a elastic sheet punching and shearing device, including a bottom plate 1, four columns 2 are fixedly connected to the middle of the bottom plate 1, the four columns 2 are distributed in a rectangle, and an upper support plate 4 is fixedly connected to the top of the columns 2.

[0028] As Figure 2As shown in the figure, 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, and the output shaft of the first cylinder 5 outputs a driving force for horizontal movement. A cross-moving plate 6 is fixedly connected to the output shaft of the first cylinder 5. The cross-moving plate 6 is a right-angle plate, and the side plate of the cross-moving plate 6 that is not connected to the output shaft of the first cylinder 5 slides horizontally and parallelly on the side wall of the first cylinder 5. As Figure 3 shown, two first sliding rails 29 protruding from the side wall are provided on the side wall of the first cylinder 5 that is not connected to the support plate 5. Two first sliders 30 are provided on the side wall of the cross-moving plate 6 that contacts the first cylinder 5. The first sliders 30 are engaged with the first sliding rails 29 and move horizontally along the first sliding rails 29.

[0029] As Figure 4 shown, a second cylinder 7 is connected to the side wall of the cross-moving plate 6 that does not contact 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 and parallelly on the side wall of the second cylinder 7. A second sliding rail 31 is provided on the side wall of the second cylinder 7 that is not connected to the cross-moving plate 6. A second slider 32 is provided on the side wall of the lifting plate 8 that contacts the second cylinder 7. The second slider 32 is engaged with the second sliding rail 29 and moves vertically along the second sliding rail 29.

[0030] As Figure 2 shown, an installation plate 9 is horizontally connected to the bottom surface of the lifting plate 8, and a positioning column 10 is vertically connected to the bottom surface of the installation plate 9. The positioning column 10 is used to pass through the tape holes 13 on the tape 12 to provide precise positioning for the subsequent punching and shearing operations on the tape 12.

[0031] As Figure 5 shown, the upper support plate 3 is rectangular, and a material passing slot 33 penetrating the upper support plate 3 is opened at the midpoint of the short side of the rectangle. The width of the material passing slot 33 is greater than the width of the tape 12 to ensure that the tape 12 will not be obstructed by the slot wall of the material passing slot 33 when moving along the material passing slot 33. On the side of the material passing slot 33 close to the tape hole 13, a pressing plate 11 is connected to the upper support plate 4. The side wall of the pressing plate 11 close to the material passing slot 33 and the slot wall of the material passing slot 33 are located in the same vertical plane. The pressing plate 11 is used to press and release the strip with the tape holes 13, so that the triangular elastic pieces 14 connected to the tape 12 are suspended in the material passing slot 33, facilitating the subsequent punching and shearing operations on the tape 12.

[0032] As Figure 7 shown, a pre-pressing cylinder 15 is connected to one end of the bottom plate 1, and a shearing cylinder 26 is connected to the other end. The output shafts of the pre-pressing cylinder 15 and the shearing cylinder 26 are arranged facing each other. As Figure 8As shown, it is located between the preloading cylinder 15 and the shearing cylinder 26 and below the upper support plate 3. A guide block 18 is also connected to the bottom plate 1. The guide block 18 is rectangular, and a guide groove 19 penetrating both ends of the guide block 18 is provided at the midpoint of the short side of the rectangle. A preloading block 16 is connected to the output shaft of the preloading 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, enabling the shearing block 27 to move along the inside of the guide groove 19. A notch is provided in the middle of the shearing block 27, and the notch is adapted to the preloading block 16, enabling the preloading block 16 to move along the inside of the notch of the shearing block 27.

[0033] As Figure 7 shown, guide posts 21 are also connected to both sides of the top surface of the guide block 18, and a liftable movable frame 20 is sleeved on the guide posts 21. A roller 24 is provided on the bottom surface of the movable frame 20. The roller 24 corresponds to the notch position of the shearing block 27 in the vertical direction, and the thickness of the roller 24 is greater than the width of the notch of the shearing block 27. A lower tool holder 35 is connected to the top surface of the movable frame 20, and a lower punching knife 22 is connected to the lower tool holder 35. The lower punching knife 22 is in the shape of a quadrangular prism. In the conveying direction of the strip 12, behind the positioning post 10, a through groove penetrating the upper and lower surfaces of the upper support plate 3 is also provided on the upper support plate 3. The position of the through groove corresponds to the movable frame 20, enabling the movable frame 20 to lift in the through groove.

[0034] As Figure 6 shown, on the side corresponding to the position of the lower punching knife 22 and away from the lower punching knife 22, an upper tool holder 34 is connected to the material passing groove 33. An upper punching knife 23 is provided at the end of the upper tool holder 34. The two facing vertical surfaces of the upper punching knife 23 and the lower punching knife 22 are in the same vertical plane, so that when the upper punching knife 23 contacts the lower punching knife 22, a punching shear force is formed to cut the triangular elastic piece 14 from the strip 12. A preloading post 25 is connected to the top surface of the lower punching knife 22. The preloading post 25 is used to pass through the central hole of the triangular elastic piece 14 to ensure that the upper punching knife 23 and the lower punching knife 22 can complete the punching and shearing action normally.

[0035] As Figure 8 shown, one end of the preloading block 16 is provided with a downward inclined guiding slope 17, and one end of the shearing block 27 is provided with an inwardly concave guiding arc surface 28. The vertical change area of the guiding arc surface 28 covers the shearing process of the lower punching knife 22 and the upper punching knife 23. When the roller 24 passes through the vertical change area of the guiding arc surface 28, the inclination degree of the guiding arc surface 28 continuously increases, and the rising speed of the movable frame 20 will accelerate. Furthermore, the punching and shearing action when the lower punching knife 22 and the upper punching knife 23 cooperate is more rapid, and the punching shear cut of the triangular elastic piece 14 is more flat, greatly improving the qualified rate of the finished product of the triangular elastic piece 14. The top surface height of the preloading block 16 is between the highest top surface and the lowest top surface of the shearing block 27, so that after the preloading block 16 initially lifts the height of the movable frame 20, the shearing block 27 can further lift the height of the movable frame 20.

[0036] In the initial state, the strip 12 is placed along the material passing groove 33, and the strip 12 is placed under the pressing plate 11, so that the triangular elastic piece 14 is suspended inside the material passing groove 33; the center hole of the first triangular elastic piece 14 to be punched and sheared on the strip 12 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 position, and the roller 24 is in contact with the guiding arc surface 28.

[0037] When punching and shearing, the output shaft of the second cylinder 7 extends, driving the lifting plate 8 to move towards the strip 12, so that the positioning column 10 is inserted into the strip hole 13 to position the strip 12; then the output shaft of the pre-pressing cylinder 15 extends, driving the pre-pressing block 16 to move towards the roller 24. When the roller 24 contacts the guiding inclined surface 17, the movable frame 20 rises evenly, and the pre-pressing column 16 enters the center hole of the triangular elastic piece 14 to ensure that the upper punching knife 23 and the lower punching knife 22 can complete the punching and shearing action. After that, the output shaft of the shearing cylinder 26 extends, driving the shearing block 27 to move towards the roller 24. When the roller 24 contacts the vertical change area of the guiding arc surface 28, the rising speed of the movable frame 20 gradually becomes faster, and the lower punching knife 22 and the upper punching knife 23 cooperate to quickly punch and shear, cutting the triangular elastic piece 14 from the strip 12, and then taking away the cut triangular elastic piece 14 through other clamping devices. Then the output shafts of the pre-pressing cylinder 15 and the shearing cylinder 26 shorten, and the movable frame 20 falls back to the initial state under the action of its own gravity; finally, the output shaft of the first cylinder 7 extends, and the positioning column 10 drives the strip 12 to move towards the upper punching knife 23. When the center hole of the next triangular elastic piece 14 to be sheared moves above the pre-pressing column 25, the first cylinder 7 stops extending, and prepares for the next round of punching and shearing action.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0039] However, the above are only specific embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the present invention patent, should still fall within the scope covered by the claims of the present invention.

Claims

1. A shrapnel punching and shearing device, comprising a bottom plate, an upper bracket is arranged on the bottom plate, and an upper punching knife is arranged on the upper bracket, characterized in that, A shearing mechanism is also provided on the bottom plate. The shearing mechanism includes a movable frame, and a lower punching knife is arranged on the movable frame. The lower punching knife moves synchronously with the movable frame. The end faces of the upper punching knife and the lower punching knife cooperate to form a scissor-shaped structure for punching and shearing the strip.

2. The shrapnel punching and shearing device according to claim 1, wherein The shearing mechanism further includes a shearing cylinder. A shearing block is connected to the output shaft of the shearing cylinder. A guiding arc surface is arranged at the end of the shearing block. The shearing block cooperates with the movable frame so that when the shearing block moves along with the output shaft of the shearing cylinder, the movable frame will drive the movable frame to move in the vertical direction due to the height difference of the guiding arc surface.

3. The shrapnel punching and shearing device according to claim 2, wherein The changing area of the guiding arc surface in the vertical direction covers the shearing process of the lower punching knife and the upper punching knife, making the shearing process faster.

4. The shrapnel punching and shearing device according to any one of claims 1-3, characterized in that, A pre-pressing mechanism is also provided on the bottom plate. The pre-pressing mechanism includes a pre-pressing motor. A pre-pressing block is connected to the output shaft of the pre-pressing motor. A guiding inclined surface is arranged 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 along with the output shaft of the pre-pressing cylinder, the movable frame will drive the movable frame to move in the vertical direction due to the height difference of the guiding inclined surface.

5. The shrapnel punching and shearing device according to claim 2, characterized in that, A notch is formed in the middle of the shearing block, and the notch is adapted to the pre-pressing block so that the pre-pressing block can move along the inside of the notch of the shearing block.

6. The shrapnel punching and shearing device according to claim 5, wherein Rollers are arranged on the movable frame. The rollers are abutted against the guiding arc surface. When the height changes at the abutting position of the rollers and the guiding arc surface, the rollers drive the movable frame to move in the vertical direction.

7. The shrapnel punching and shearing device according to claim 4, wherein, Pre-pressing columns are also arranged on the lower punching knife. The distance between the pre-pressing columns and the center hole of the triangular elastic piece is equal to the height difference of the guiding inclined surface in the vertical direction, so that after the pre-pressing block drives the movable frame to rise, the pre-pressing columns can be inserted into the center hole of the triangular elastic piece.

8. The shrapnel punching and shearing device according to claim 2, characterized in that, A first cylinder is also arranged on the upper support. The first cylinder provides the driving force for horizontal movement; a transverse movement plate is connected to the output shaft of the first cylinder, and a second cylinder is connected to the transverse movement plate. The second cylinder provides the driving force for vertical movement; the output shaft of the second cylinder is connected to a lifting plate, and positioning columns are arranged on the lifting plate. Through the vertical output of the second cylinder, the positioning columns can be inserted into the strip holes; through the horizontal output of the first cylinder, the positioning columns can drive the strip to move towards the punching and shearing station after being inserted into the strip holes.

9. The shrapnel punching and shearing device according to claim 1, wherein A strip passing groove is also formed on the upper support. A pressing plate is arranged on one side of the strip passing groove. The pressing plate presses the strip on the side edge of the strip passing groove so that the triangular elastic piece can hang inside the strip passing groove.

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