High-precision indexing cutting device

Abstract

The utility model provides a high-precision indexing cutting device which comprises an upper die plate, a lower die plate, a shaft seat, a first ratchet wheel, a cam, a cam shaft, a lower fixing plate and a shifting block, the shaft seat is fixed below the upper die plate, the cam shaft rotationally connected with the shaft seat is inserted in the shaft seat, the cam is fixed at one end, located in the shaft seat, of the cam shaft, and the first ratchet wheel is fixed at the other end of the cam shaft. Convex teeth are arranged on the outer portion of the cam and matched with a driving rod arranged on the shaft seat. The lower fixing plate is arranged on the lower template, a shifting block elastically connected with the lower fixing plate is arranged on the lower fixing plate, and a driving part for driving the ratchet wheel I to rotate is arranged on the shifting block; a retaining mechanism is further arranged on the upper die plate, when the upper die plate moves downwards, the shifting block drives the first ratchet wheel to rotate by an angle, when the upper die plate moves upwards, the shifting block resets, and the first ratchet wheel does not rotate through the retaining mechanism. According to the utility model, the fixed-length and cut-off actions are synchronously completed through the reciprocating action of the punching equipment, the same drive is adopted, the structure is simple, the manufacturing cost is reduced, and the punching precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of punching and cutting technology, and in particular to a high-precision indexing and cutting device. Background Technology

[0002] In the manufacturing of conductor frames, stamping is generally used to roll or cut sheet metal. Conductor frames come in a wide variety of lengths and widths, requiring cutting to a fixed length or distance according to the dimensions of the conductor frame. Currently, the fixed-length structure and forming structure in conventional stamping forming equipment use different drives, resulting in errors that affect processing accuracy. Furthermore, the complex structure increases manufacturing costs. Utility Model Content

[0003] The present invention aims to provide a high-precision indexing and cutting device to overcome the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a high-precision indexing and cutting device, including an upper template, a lower template, a shaft seat, a ratchet, a cam, a camshaft, a lower fixed plate, and a lever. The shaft seat is fixed below the upper template, and a camshaft rotatably connected to it is inserted inside. One end of the camshaft located inside the shaft seat is fixed with a cam, and the other end located outside the shaft seat is fixed with a ratchet. The cam has teeth on its exterior, and the teeth cooperate with a drive rod located on the shaft seat. The number of teeth on the ratchet is an integer multiple of the number of teeth on the teeth. The lower fixed plate is located on the lower template, and a lever is elastically connected to it. The lever has a drive part that drives the ratchet to rotate. The upper template is also provided with a backstop mechanism. When the upper template moves downward, the lever drives the ratchet to rotate by an angle. When the upper template moves upward, the lever is elastically reset, and the ratchet does not rotate due to the backstop mechanism.

[0005] Furthermore, in the aforementioned high-precision indexing and cutting device, the lever is elastically connected to the lower fixed plate via a tension spring. The upper end of the lever is hinged to the lower fixed plate via a rotating shaft, and the lower end is fixed with a tension spring rod connected to one end of the tension spring. The other end of the tension spring is connected to the tension spring rod fixed on the lower fixed plate.

[0006] Furthermore, in the aforementioned high-precision indexing and cutting device, a limiting rod is also provided on the lower fixed plate. The limiting rod is located below the driving part of the dial block and is used to limit the reset angle of the dial block.

[0007] Furthermore, in the aforementioned high-precision indexing and cutting device, the cam is integrally formed with the camshaft, and the convex tooth is arc-shaped.

[0008] Furthermore, in the aforementioned high-precision indexing and cutting device, the anti-reverse mechanism includes a fixed block and a push rod. The fixed block is fixed on the upper template, and one end of the push rod is inserted into the fixed block, while the other end abuts against the ratchet teeth of the ratchet.

[0009] Furthermore, in the aforementioned high-precision indexing and cutting device, the push rod one elastically abuts against the ratchet one, the fixing block is provided with an insertion hole one for inserting the push rod one, the insertion hole one is provided with a spring one, one end of the spring one abuts against the push rod one, and the other end abuts against the plug nut that seals the insertion hole one.

[0010] Furthermore, in the aforementioned high-precision indexing and cutting device, the anti-reverse mechanism also includes a second ratchet and a second push rod. The second ratchet is fixed on the camshaft and abuts against the side of the first ratchet near the cam. The second ratchet has a tooth groove with the same number of teeth as the first ratchet. One end of the second push rod is inserted into the fixed block, and the other end abuts against the tooth groove of the second ratchet.

[0011] Furthermore, in the aforementioned high-precision indexing and cutting device, the second push rod also elastically abuts against the second ratchet. The fixing block is provided with a second insertion hole for inserting the second push rod. A second spring is provided inside the second insertion hole. One end of the second spring abuts against the second push rod, and the other end abuts against the plug nut that seals the second insertion hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the fixed length structure and the forming structure of this utility model complete the fixed length and cutting actions synchronously through the reciprocating motion of the stamping equipment, adopt the same drive, have a simple structure, reduce manufacturing costs, and improve stamping accuracy. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the high-precision indexing and cutting device of this utility model;

[0015] Figure 2 This is a partial structural diagram of the high-precision indexing and cutting device of this utility model. Figure 1 ;

[0016] Figure 3 This is a partial structural diagram of the high-precision indexing and cutting device of this utility model. Figure 2 ;

[0017] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at section A;

[0018] Figure 5 for Figure 3 A schematic diagram of the B-section structure;

[0019] In the diagram: 1. Upper template; 2. Lower template; 3. Shaft seat; 4. Ratchet 1; 5. Cam; 51. Convex tooth; 6. Camshaft; 7. Lower fixed plate; 8. Pulley; 81. Drive unit; 9. Drive rod; 10. Tension spring; 11. Rotating shaft; 12. Limit rod; 13. Fixed block; 14. Push rod 1; 15. Spring 1; 16. Ratchet 2; 17. Push rod 2; 18. Spring 2. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] like Figure 1-5 As shown, a high-precision indexing and cutting device includes an upper template 1, a lower template 2, a bearing 3, a ratchet 4, a cam 5, a camshaft 6, a lower fixed plate 7, and a lever 8. The bearing 3 is fixed below the upper template 1, and a camshaft 6 is rotatably connected to it inserted inside. One end of the camshaft 6 located inside the bearing 3 is fixed with the cam 5, and the other end located outside the bearing 3 is fixed with the ratchet 4. The ratchet 4 is connected to a length-fixing structure for positioning the workpiece. The cam 5 and the camshaft 6 are integrally formed, resulting in a simple structure and low manufacturing cost. The cam 5 has an arc-shaped tooth 51 on its exterior, which cooperates with a drive rod 9 located on the bearing 3. The drive rod 9 is connected to the stamping plate... The structure is connected in a type, and the number of ratchet teeth on ratchet 4 is an integer multiple of the number of teeth on convex tooth 5. The number of teeth on ratchet 4 and convex tooth 51 is set according to the fixed length distance of punching. In this embodiment, ratchet 4 has 10 teeth and convex tooth 51 has 2 teeth. The lower fixed plate 7 is provided on the lower template 2, and a lever block 8 is provided on it and is elastically connected to it. The lever block 8 is provided with a driving part 81 for driving ratchet 4 to rotate. The upper template 1 is also provided with a backstop mechanism. When the upper template 1 moves downward, the lever block 8 drives ratchet 4 to rotate by an angle, which is the angle of one ratchet tooth. When the upper template 1 moves upward, the lever block 8 is elastically reset, and ratchet 4 does not rotate due to the backstop mechanism.

[0023] like Figure 1As shown, the lever 8 is elastically connected to the lower fixed plate 7 via a tension spring 10. The upper end of the lever 8 is hinged to the lower fixed plate 7 via a rotating shaft 11, and the lower end is fixed with a tension spring rod connected to one end of the tension spring 10. The other end of the tension spring 10 is connected to a tension spring rod fixed on the lower fixed plate 7. The lower fixed plate 7 is also provided with a limiting rod 12, which is located below the driving part 81 of the lever and is used to limit the reset angle of the lever 8, so that the lever 8 abuts against the side of the limiting rod 12 in the reset state, maintaining a vertically set state.

[0024] Example 2

[0025] Based on the structure of Example 1, such as Figure 3-4 As shown, the anti-reverse mechanism includes a fixed block 13 and a push rod 14. The fixed block 13 is fixed to the upper template 1. One end of the push rod 14 is inserted into the fixed block 13, and the other end abuts against the ratchet teeth of the ratchet wheel 4. The push rod 14 elastically abuts against the ratchet wheel 4. The fixed block 13 has a socket for inserting the push rod 14. A spring 15 is installed in the socket. One end of the spring 15 abuts against the push rod 14, and the other end abuts against a plug nut that seals the socket. When the upper template 1 moves downward, the ratchet wheel 4 rotates clockwise, and the push rod 14 does not prevent the ratchet wheel 4 from rotating. When the upper template 1 moves upward, the push rod 14 abuts against the ratchet teeth of the ratchet wheel 4 to prevent the ratchet wheel 4 from rotating, and the spring 15 ensures the clamping force of the push rod 14.

[0026] To further ensure that ratchet 4 does not retract, such as Figure 3-5 As shown, the anti-reverse mechanism also includes a second ratchet 16 and a second push rod 17. The second ratchet 16 is fixed on the camshaft 6 and abuts against the side of the first ratchet 4 near the cam 5. The second ratchet 16 has a tooth groove with the same number of teeth as the first ratchet 4. One end of the second push rod 17 is inserted into the fixing block 13, and the other end abuts against the tooth groove of the second ratchet 16. The second push rod 17 also elastically abuts against the second ratchet 16. The fixing block 13 has a second insertion hole for inserting the second push rod 17. A second spring 18 is provided in the second insertion hole. One end of the second spring 18 abuts against the second push rod 17, and the other end abuts against the plug nut sealing the second insertion hole. The second ratchet 16 is fixedly connected to the camshaft 6, and the second ratchet 16 has the same number of teeth as the first ratchet 4 and rotates synchronously with the first ratchet 4. The second push rod 17 can synchronously prevent the second ratchet 16 from retracting, thereby improving the anti-reverse effect.

[0027] The working principle of this utility model is as follows: During stamping, the upper die plate 1 descends, and the driving part 81 of the lever 8 collides with the ratchet teeth of the ratchet wheel 4. The driving part 81 will drive the ratchet wheel 4 to rotate by an angle, thereby driving the cam 5 fixed on the camshaft 6 to rotate synchronously, forcing the driving rod 9 to move a distance, driving the punching and forming structure connected to the driving rod 9 to approach or partially shear the workpiece, so that the fixed length structure and the forming structure are synchronized. After completing one action, the upper die plate 1 rises and returns, the lever 8 is reset under the action of the tension spring 10, and the ratchet wheel 4 does not rotate under the action of the anti-reverse mechanism. After the upper die moves back and forth several times, in this embodiment 5 times, which is equal to the multiple of the number of ratchet teeth and the number of convex teeth of the ratchet wheel 4, the ratchet wheel 4 rotates to the set angle to reach the punching length. At the same time, the convex teeth 51 of the cam 5 rotate to the highest point, forcing the driving rod 9 to move, thereby driving the punching and forming structure connected to it to complete the cutting action, realizing synchronous cutting of indexed fixed length. In summary, the fixed-length structure and forming structure of this utility model complete the fixed-length and cutting actions synchronously through the reciprocating motion of the stamping equipment. They adopt the same drive (stamping equipment), have a simple structure, reduce manufacturing costs, and improve stamping accuracy.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision indexing and cutting device, characterized in that: The assembly includes an upper template, a lower template, a bearing seat, a ratchet, a cam, a camshaft, a lower fixed plate, and a lever. The bearing seat is fixed below the upper template and has a camshaft rotatably connected to it inserted inside. One end of the camshaft, located inside the bearing seat, is fixed with a cam, and the other end, located outside the bearing seat, is fixed with a ratchet. The cam has protruding teeth that engage with a drive rod on the bearing seat, and the number of teeth on the ratchet is an integer multiple of the number of protruding teeth. The lower fixed plate is located on the lower template and has a lever elastically connected to it. The lever has a drive unit that drives the ratchet to rotate. The upper template also has a backstop mechanism. When the upper template moves downward, the lever drives the ratchet to rotate by an angle. When the upper template moves upward, the lever is elastically reset, and the ratchet does not rotate due to the backstop mechanism.

2. The high-precision indexing and cutting device according to claim 1, characterized in that: The lever is elastically connected to the lower fixed plate via a tension spring. The upper end of the lever is hinged to the lower fixed plate via a rotating shaft, and the lower end is fixed with a tension spring rod connected to one end of the tension spring. The other end of the tension spring is connected to the tension spring rod fixed on the lower fixed plate.

3. The high-precision indexing and cutting device according to claim 2, characterized in that: The lower fixing plate is also provided with a limiting rod, which is located below the driving part of the toggle block and is used to limit the reset angle of the toggle block.

4. The high-precision indexing and cutting device according to claim 1, characterized in that: The cam is integrally formed with the camshaft.

5. The high-precision indexing and cutting device according to claim 1, characterized in that: The anti-reverse mechanism includes a fixed block and a push rod. The fixed block is fixed on the upper template, and one end of the push rod is inserted into the fixed block, while the other end abuts against the ratchet teeth of the ratchet.

6. The high-precision indexing and cutting device according to claim 5, characterized in that: The push rod 1 elastically abuts against the ratchet 1. The fixing block is provided with a socket 1 for inserting the push rod 1. A spring 1 is provided in the socket 1. One end of the spring 1 abuts against the push rod 1, and the other end abuts against the plug nut that seals the socket 1.

7. The high-precision indexing and cutting device according to claim 5, characterized in that: The anti-reverse mechanism also includes a second ratchet and a second push rod. The second ratchet is fixed on the camshaft and abuts against the side of the first ratchet near the cam. The second ratchet has a tooth groove with the same number of teeth as the first ratchet. One end of the second push rod is inserted into the fixed block, and the other end abuts against the tooth groove of the second ratchet.

8. The high-precision indexing and cutting device according to claim 7, characterized in that: The second push rod also elastically abuts against the second ratchet. The fixing block is provided with a second insertion hole for inserting the second push rod. A second spring is provided in the second insertion hole. One end of the second spring abuts against the second push rod, and the other end abuts against the plug nut that seals the second insertion hole.

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