Punching positioning mechanism

Abstract

The utility model discloses a punching positioning mechanism which comprises a working table. The clamping assembly is located on the working table top and comprises a fixed clamping part and a movable clamping part which are used in cooperation, the fixed clamping part and the movable clamping part each comprise an arc-shaped clamping face matched with the side face of the product in shape, and a clamping cavity used for containing the product is jointly formed between all the arc-shaped clamping faces; the punching assembly is located on the working table top and comprises a lifting driving piece, a lifting plate, a punching part and a positioning part; the lifting plate can ascend and descend in the direction away from or close to the clamping cavity under the action of the lifting driving piece. The positioning part is located on the lifting plate and can flexibly abut against the product; the punching part is located on the lifting plate and used for punching inclined holes in the side faces of the products. According to the utility model, the positioning effect on the tubular workpiece can be improved, and the accuracy of the punching position is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a punching positioning mechanism. Background Art

[0002] Punching is a common machining process for workpieces. During operation, the workpiece is first clamped by a positioning fixture, and then the punch is used to penetrate the surface of the workpiece. For tubular workpieces, due to their shape, existing positioning fixtures are not effective. This is especially true when punching oblique holes on the side of a tubular workpiece, which can easily cause the workpiece to move, resulting in a misaligned punching position. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a punching positioning mechanism that can improve the positioning effect of the tubular workpiece and thereby ensure the accuracy of the punching position.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a punching positioning mechanism, including

[0005] work surfaces;

[0006] A clamping assembly is located on the work surface and includes a fixed clamping portion and a movable clamping portion used in conjunction with each other. The fixed clamping portion and the movable clamping portion each include an arc-shaped clamping surface that matches the side shape of the product. All of the arc-shaped clamping surfaces together form a clamping cavity for accommodating the product.

[0007] The punching assembly is located on the work surface and includes a lifting drive member, a lifting plate, a punching portion, and a positioning portion; the lifting plate can be lifted and moved in a direction away from or close to the clamping cavity under the action of the lifting drive member; the positioning portion is located on the lifting plate and can flexibly abut against the product; the punching portion is located on the lifting plate and is used to punch oblique holes on the side of the product;

[0008] When the product is located in the clamping cavity, the area to be punched on the side of the product can be exposed in the clamping cavity; and when the lifting drive member drives the lifting plate to descend, the positioning part can abut against the product before the punching part; as the lifting plate continues to descend, the punching part can be aligned with the area to be punched on the side of the product.

[0009] The beneficial effects of the punching positioning mechanism of the utility model are:

[0010] During operation, the product is placed vertically into the clamping cavity, and the area to be punched on the side of the product is located outside the clamping cavity; then the lifting drive is started, and the lifting plate drives the punching part and the positioning part to move downward synchronously until the positioning part contacts the upper end of the product; the lifting plate continues to move downward, and the positioning part is then flexibly pressed against the product, and the punching part continues to move downward until the punching part moves down to the area to be punched that is aligned with the side of the product; the lifting plate stops moving, and the punching part then performs a punching operation on the area to be punched.

[0011] First, the side of the product can be positioned and clamped by the clamping assembly, and then the upper and lower ends of the product can be positioned by cooperating with the work surface through the positioning part; to ensure that when the punching part is operated, all sides of the product can be positioned, thereby avoiding movement of the product during the punching process and ensuring the stability of the punching position.

[0012] It should be noted that the punching positioning mechanism of the present application is suitable for punching operations on the side of the end of a tubular product. The clamping assembly is clamped in the non-punching area of ​​the surface to be punched of the tubular product. Therefore, when designing, the height of the clamping cavity should be smaller than the height of the product so that the area to be punched on the side of the product can be exposed in the clamping cavity, which facilitates the punching operation of the punching assembly.

[0013] Specifically, the punching unit includes a mounting base, a punching driver, and a punching head. The mounting base is fixed to the lifting plate and is provided with an inclined plate perpendicular to the direction of the inclined hole. The punching driver is mounted on the inclined plate and is capable of driving the punching head to move back and forth along the direction of the inclined hole. The inclined plate ensures that the punching driver and punching head maintain the same inclination as the desired inclined hole.

[0014] Furthermore, the punching unit further includes a guide plate connected to the punching drive, the guide plate extending through the lifting plate and provided with a guide rod fixedly connected to the tilting plate; the punching head is mounted on the guide plate. The guide rod guides the movement of the guide plate, thereby improving the accuracy of the punching position of the punching head.

[0015] Furthermore, the positioning portion includes a positioning pressure plate, the upper end of which is connected to the lifting plate through an elastic member, and the lower end of which faces the clamping cavity.

[0016] Specifically, the lift drive comprises a lift cylinder secured to the work surface, the piston rod of the lift cylinder being provided with a cylindrical connector. The lift plate is provided with a connector seat that engages with the cylindrical connector. The cooperation between the cylindrical connector and the connector seat facilitates rapid assembly and disassembly of the lift drive and the lift plate.

[0017] Furthermore, the cylindrical connector includes an upper cylinder and a lower cylinder that are coaxially arranged. The upper cylinder is connected to the lifting cylinder, and its outer diameter is smaller than the outer diameter of the lower cylinder.

[0018] Furthermore, the connecting seat includes a base, on which two inverted "L"-shaped plates are symmetrically arranged, and a storage space for accommodating the lower column is formed between the two plates, and the distance between the upper ends of the two plates is smaller than the outer diameter of the lower column and larger than the outer diameter of the upper column.

[0019] When the lifting cylinder drives the cylindrical connecting head downward, the lower column can push the base downward, thereby driving the connecting seat and the lifting plate downward; when the lifting cylinder drives the cylindrical connecting head upward, the lower column can push the plate upward, thereby driving the connecting seat and the lifting plate upward.

[0020] Specifically, the fixed clamping portion includes a clamping base fixed to the work surface. The clamping base is integrally provided with a plurality of fixed plates arranged around the clamping cavity. The curved clamping surface is provided on the side of each fixed plate facing the clamping cavity, and a movable gap is provided between adjacent fixed plates. The combination of the multiple fixed plates and the curved clamping surface allows for preliminary positioning of the product, and the movable clamping portion then further positions the product.

[0021] Furthermore, a guide notch is provided at the upper end of the arc-shaped clamping surface of the fixed clamping portion to facilitate the product to enter the clamping cavity.

[0022] Specifically, the movable clamping portion includes a movable plate disposed around the clamping cavity and corresponding to each of the plurality of movable gaps. The movable plate is positioned within the corresponding movable gap, and the curved clamping surface is provided on the side facing the clamping cavity. The other end of the movable plate is connected to a clamping cylinder fixed to the work surface. The clamping cylinder drives the movable plate toward the clamping cavity so that the curved clamping surface on the movable plate can abut against the product, thereby achieving product positioning. Positioning the movable plate within the movable gap allows the two adjacent fixed plates to guide its movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the punching positioning mechanism according to an embodiment of the present utility model;

[0024] Figure 2 This is a structural diagram of the punching assembly of an embodiment of the utility model installed on a lifting plate;

[0025] Figure 3 This is a structural diagram of the lifting plate of an embodiment of the utility model;

[0026] Figure 4This is a schematic structural diagram of a punching assembly according to an embodiment of the present utility model;

[0027] Figure 5 This is a schematic structural diagram of the clamping assembly according to an embodiment of the present utility model.

[0028] In the picture:

[0029] 1-Work surface;

[0030] 2-clamping assembly; 21-arc-shaped clamping surface; 211-guide notch; 22-fixed plate; 23-movable plate; 24-clamping cylinder;

[0031] 3-punching assembly; 31-lifting drive member; 311-column connector; 32-lifting plate; 321-connecting seat; 33-punching part; 331-mounting seat; 332-punching drive member; 333-punching head; 334-guide plate; 335-guide rod; 34-positioning part; 341-pressing plate; 342-elastic member. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0033] Example

[0034] In the existing technology, the positioning fixture is usually clamped on the non-punching surface of the product. However, when punching oblique holes on the side of the end of a tubular product, the side of the product (arc-shaped surface) is the punching surface, and the end surface (flat surface) of the product is the non-punching surface. When the positioning fixture is clamped on the end surface of the product, the punching position is close to the end surface of the product, and the positioning fixture is likely to interfere with the punching operation; and when the positioning fixture is clamped on the side of the product, the position of the product will be offset during the punching process due to insufficient clamping force, affecting the punching accuracy.

[0035] Based on this, see Appendix Figure 1-3As shown, a punching positioning mechanism of the present invention includes a work surface 1, a clamping assembly 2, and a punching assembly 3. The clamping assembly 2 is located on the work surface 1, and includes a fixed clamping part and a movable clamping part used in conjunction with each other. The fixed clamping part and the movable clamping part both include an arc-shaped clamping surface 21 that matches the side shape of the product, and all the arc-shaped clamping surfaces 21 together form a clamping cavity for accommodating the product. The punching assembly 3 is located on the work surface 1, and includes a lifting drive member 31, a lifting plate 32, a punching part 33, and a positioning part 34. The lifting plate 32 can be lifted and moved in a direction away from or close to the clamping cavity under the action of the lifting drive member 31; the positioning part 34 is located on the lifting plate 32, and can flexibly abut against the product; the punching part 33 is located on the lifting plate 32, and is used to punch oblique holes on the side of the product. When the product is located in the clamping cavity, the area to be punched on the side of the product can be exposed in the clamping cavity; and when the lifting drive 31 drives the lifting plate 32 to descend, the positioning portion 34 can abut against the product before the punching portion 33; as the lifting plate 32 continues to descend, the punching portion 33 can be aligned with the area to be punched on the side of the product.

[0036] During operation, the product is placed in the clamping cavity in the vertical direction, and the area to be punched on the side of the product is located outside the clamping cavity; then the lifting drive 31 is started, and the lifting plate 32 drives the punching part 33 and the positioning part 34 to move downward synchronously until the positioning part 34 contacts the upper end of the product; the lifting plate 32 continues to move downward, and the positioning part 34 is then flexibly pressed on the product, and the punching part 33 continues to move downward until the punching part 33 moves down to the area to be punched that is aligned with the side of the product; the lifting plate 32 stops moving, and the punching part 33 immediately performs a punching operation on the area to be punched.

[0037] It should be noted that the punching positioning mechanism of the present application is suitable for punching operations on the side of the end of a tubular product. The clamping assembly is clamped in the non-punching area of ​​the surface to be punched of the tubular product. Therefore, when designing, the height of the clamping cavity should be smaller than the height of the product so that the area to be punched on the side of the product can be exposed in the clamping cavity, which facilitates the punching operation of the punching assembly.

[0038] In some embodiments, see Appendix Figure 2-4 As shown, the punching unit 33 includes a mounting base 331, a punching driver 332, and a punch head 333. The mounting base 331 is fixed to the lifting plate 32, on which is mounted an inclined plate perpendicular to the direction of the inclined hole. The punching driver 332 (e.g., a cylinder) is mounted on the inclined plate and can drive the punch head 333 to move back and forth along the direction of the inclined hole. The inclined plate allows the punching driver 332 and the punch head 333 to maintain the same inclination as the desired inclined hole.

[0039] When the punch head 333 contacts the product, its subsequent punching movement is susceptible to positional displacement due to product resistance. Therefore, in some embodiments, the punching unit 33 also includes a guide plate 334 connected to the punching driver 332. The guide plate 334 extends through the lifting plate 32 and is provided with a guide rod 335 fixed to the inclined plate. The punch head 333 is mounted on the guide plate 334. The guide rod 335 guides the movement direction of the guide plate 334, thereby improving the accuracy of the punching position of the punch head 333.

[0040] In some embodiments, see Appendix Figure 3 As shown, the positioning portion 34 includes a positioning pressure plate 341. The upper end of the positioning pressure plate 341 is connected to the lifting plate 32 via an elastic member 342, and the lower end faces the clamping cavity. For example, the elastic member 342 can be a spring. Furthermore, to guide the spring, a guide rod can be mounted on the pressure plate 341 and passed through the lifting plate 32. In this case, the spring is mounted on the guide rod, with its ends abutting the lifting plate 32 and the pressure plate 341, respectively.

[0041] In some embodiments, the lift drive 31 comprises a lift cylinder fixed to the work surface 1, with a cylindrical connector 311 disposed on the piston rod of the lift cylinder. The lift plate 32 is provided with a connector seat 321 that engages with the cylindrical connector 311. The cooperation between the cylindrical connector and the connector seat facilitates rapid assembly and disassembly of the lift drive and the lift plate.

[0042] Specifically, the cylindrical connector 311 comprises a coaxially arranged upper and lower cylinders. The upper cylinder is connected to the lifting cylinder and has an outer diameter smaller than that of the lower cylinder. The connector base 321 comprises a base fixed to the lifting plate. Two inverted L-shaped plates are symmetrically mounted on the base. The two plates together form a space for accommodating the lower cylinder. The spacing between the upper ends of the two plates is smaller than the outer diameter of the lower cylinder and larger than the outer diameter of the upper cylinder.

[0043] When the lifting cylinder drives the cylindrical connector 311 downward, the lower column can push the base downward, thereby driving the connecting seat 321 and the lifting plate 32 downward; when the lifting cylinder drives the cylindrical connector upward, the lower column can push the plate upward, thereby driving the connecting seat 321 and the lifting plate 32 upward.

[0044] In some embodiments, see Appendix Figure 5As shown, the fixed clamping portion includes a clamping base fixedly connected to the work surface 1. The clamping base is integrally provided with a plurality of fixed plates 22 arranged around the clamping cavity. The side of the fixed plate 22 facing the clamping cavity is provided with an arc-shaped clamping surface 21. A movable gap is left between two adjacent fixed plates 22. The movable clamping portion includes a movable plate 23 arranged around the clamping cavity and corresponding to the multiple movable gaps. The movable plate 23 is located in the corresponding movable gap. The side of the movable plate 23 facing the clamping cavity is provided with an arc-shaped clamping surface 21, and the other end is connected to the clamping cylinder 24 fixed to the work surface 1.

[0045] First, the product is initially positioned by the cooperation of multiple fixed plates 22 and the arc-shaped clamping surface 21. Then, the clamping cylinder 24 drives the movable plate 23 toward the clamping cavity so that the arc-shaped clamping surface 21 on the movable plate 23 can abut against the product, achieving further positioning of the product. By placing the movable plate 23 in the movable gap, the two adjacent fixed plates 22 can guide the movement of the movable plate 23.

[0046] Furthermore, a guide notch 211 is provided at the upper end of the arc-shaped clamping surface 21 of the fixed clamping portion to facilitate the product to enter the clamping cavity.

[0047] The above implementation methods are only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A punching positioning mechanism, characterized in that: include Work surfaces; A clamping assembly, located on the work surface, comprising a fixed clamping part and a movable clamping part for use together, wherein the fixed clamping part and the movable clamping part both comprise an arc-shaped clamping surface matching the side shape of the product, and all the arc-shaped clamping surfaces together form a clamping cavity for accommodating the product; The punching assembly is located on the work surface and includes a lifting drive, a lifting plate, a punching part, and a positioning part; the lifting plate can be lifted and moved in a direction away from or close to the clamping cavity under the action of the lifting drive; the positioning part is located on the lifting plate and can be flexibly abutted against the product; the punching part is located on the lifting plate and is used to punch oblique holes on the side of the product; When the product is located in the clamping cavity, the area to be punched on the side of the product can be exposed in the clamping cavity; and when the lifting drive member drives the lifting plate to descend, the positioning part can abut against the product before the punching part; as the lifting plate continues to descend, the punching part can be aligned with the area to be punched on the side of the product.

2. The punching positioning mechanism according to claim 1, characterized in that: The punching part includes a mounting seat, a punching drive, and a punching head. The mounting seat is fixedly connected to the lifting plate and is provided with an inclined plate perpendicular to the direction of the inclined hole. The punching drive is installed on the inclined plate and can drive the punching head to reciprocate along the direction of the inclined hole.

3. The punching positioning mechanism according to claim 2, characterized in that: The punching part also includes a guide plate connected to the punching drive member, the guide plate is arranged through the lifting plate, and a guide rod fixedly connected to the inclined plate is passed through the guide plate; the punching head is installed on the guide plate.

4. The punching positioning mechanism according to claim 1, characterized in that: The positioning portion comprises a positioning pressing plate, the upper end of which is connected to the lifting plate through an elastic member, and the lower end of which faces the clamping cavity.

5. The punching positioning mechanism according to claim 1, characterized in that: The lifting drive member comprises a lifting cylinder fixedly connected to the work surface, the piston rod of the lifting cylinder is provided with a columnar connector; the lifting plate is provided with a connecting seat which can be snapped onto the columnar connector.

6. The punching positioning mechanism according to claim 5, characterized in that: The cylindrical connector includes an upper cylinder and a lower cylinder which are coaxially arranged. The upper cylinder is connected to the lifting cylinder and has an outer diameter which is smaller than that of the lower cylinder.

7. The punching positioning mechanism according to claim 6, characterized in that: The connecting seat includes a base, on which two inverted "L"-shaped plates are symmetrically arranged, and a receiving space for accommodating the lower column is formed between the two plates, and the distance between the upper ends of the two plates is smaller than the outer diameter of the lower column and larger than the outer diameter of the upper column.

8. The punching positioning mechanism according to claim 1, characterized in that: The fixed clamping part includes a clamping base fixedly connected to the work surface, and a plurality of fixing plates arranged around the clamping cavity are integrally arranged on the clamping base. The arc-shaped clamping surface is arranged on the side of the fixing plate facing the clamping cavity; and a movable gap is left between two adjacent fixing plates.

9. The punching positioning mechanism according to claim 8, characterized in that: A guide notch is provided at the upper end of the arc-shaped clamping surface of the fixed clamping part.

10. The punching positioning mechanism according to claim 8, characterized in that: The movable clamping part includes a movable plate arranged around the clamping cavity and arranged one by one corresponding to the multiple movable gaps. The movable plate is located in the corresponding movable gap, and the arc-shaped clamping surface is provided on the side facing the clamping cavity, and the other end is connected to the clamping cylinder fixedly connected to the work table.

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