CN219443320U - High-efficient press riveting die - Google Patents

Abstract

The utility model relates to the technical field of dies, in particular to a high-efficiency riveting die which comprises an upper die holder, a lower die holder, a stamping plate, a lower die plate, a riveting discharging cavity and a plurality of rivet clamping mechanisms, wherein each rivet clamping mechanism comprises a lifting driving module, an embedded sleeve, a plurality of lifting inclined grooves and a plurality of lifting clamping blocks; when the bottom end of the stop inclined surface is abutted against the stop surface, the lifting clamping blocks are close to each other; when the top end of the stop inclined surface abuts against the stop surface, the plurality of lifting clamp blocks are opened mutually. According to the riveting clamp, the lifting clamp blocks are closed or opened to clamp or loosen the rivet, so that the position accuracy and stability of the rivet are improved, the rivet is convenient to take and place, and the quality and efficiency of riveting are improved.

Description

High-efficient press riveting die

Technical Field

The utility model relates to the technical field of dies, in particular to a high-efficiency riveting die.

Background

The prior method for pressing and riveting the rivet on the workpiece by the pressing and riveting die mainly comprises the steps of firstly placing the rivet in a positioning hole of a lower die, then placing the pressing and riveting position of the workpiece on the rivet, and then pressing downwards by an upper die to press and rivet the workpiece and the rivet together. In the process of riveting, if the gap between the positioning hole and the rivet is too loose, the positioning of the rivet is inaccurate, and the problems of non-verticality of the rivet or poor position degree of the rivet can be generated; if the gap between the positioning hole and the rivet is too tight, the rivet cannot be taken out well after the product is riveted, and the rivet is easily pulled loose due to overlarge force during taking out, even the rivet is enabled to fall off, and defective products are caused. In the prior art, patent document with application number of CN201822225418.9 discloses a die for realizing quick production of riveting bolts, when a stamping equipment sliding block drives a tubular punch to descend, the lower plane of the tubular punch is impacted on the upper plane of a die core, the die core is forced to shrink inwards due to the reverse supporting effect of the taper of an inner hole of a bottom die, and the working surface of the inner hole of the die core extrudes the tail part of a riveting sleeve of a riveting bolt, so that the riveting sleeve is plastically deformed and tightly held on the bolt. According to the patent document, the mold core is forced to shrink inwards under the reverse supporting action of the taper of the inner hole of the bottom mold so as to clamp the tail part of the riveting sleeve of the rivet bolt, and the mold core is elastically opened so as to loosen the tail part of the riveting sleeve of the rivet bolt; when the die core works for a long time, once the elasticity of the die core fails, the die core cannot normally loosen the tail of the clamping rivet bolt riveting sleeve, and the die core is easy to damage and short in service life.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a high-efficiency riveting die.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the high-efficiency riveting die comprises an upper die holder, a lower die holder positioned below the upper die holder, a stamping plate arranged on the bottom surface of the upper die holder, a lower die plate arranged on the top surface of the lower die holder, a riveting discharging cavity concavely arranged on the lower die plate and a plurality of rivet clamping mechanisms arranged on the lower die plate, wherein the rivet clamping mechanisms are distributed on the outer side of the riveting discharging cavity and comprise a lifting driving module embedded in the lower die holder, an embedding sleeve embedded in the lower die plate, a plurality of lifting inclined slots arranged in the embedding sleeve and a plurality of lifting clamping blocks respectively in sliding connection with the lifting inclined slots, the lifting inclined slots are distributed on the inner wall of the embedding sleeve in an annular array, the lifting clamping blocks are surrounded to form clamping holes, the inner wall of the lifting inclined slots is provided with a stop surface, the outer side wall of each lifting clamping block is provided with a stop inclined surface in abutting fit with the stop inclined surface, each stop inclined surface is obliquely arranged from top to bottom far away from the central axis of the embedding sleeve, each lifting inclined slot is obliquely arranged from top to bottom towards the central axis close to the embedding sleeve, and the lifting end of each lifting driving module is used for driving the lifting clamping blocks to lift relatively to the embedding sleeve; when the bottom end of the stop inclined surface is abutted against the stop surface, the lifting clamping blocks are close to each other; when the top end of the stop inclined surface abuts against the stop surface, the plurality of lifting clamp blocks are opened mutually.

Further, the lifting driving module comprises a plurality of lifting driving components arranged in the lower die holder, and lifting ends of the lifting driving components respectively collide with the bottom surfaces of the lifting clamping blocks in a one-to-one correspondence manner.

Further, the lifting driving assembly comprises a mounting hole formed in the lower die holder, a lifting rod arranged in the mounting hole in a sliding manner and an elastic piece arranged in the mounting hole, wherein two ends of the elastic piece respectively abut against the bottom wall of the mounting hole and the bottom end surface of the lifting rod, and the top end surface of the lifting rod abuts against the bottom surface of the corresponding lifting clamping block.

Further, the lifting driving assembly further comprises a sealing head detachably arranged at the bottom end of the mounting hole, and the bottom end of the elastic piece is abutted against the sealing head.

Further, the included angle between the lifting chute and the central axis of the embedded sleeve is 3-5 degrees.

Further, the included angle between the lifting chute and the central axis of the embedded sleeve is 5 degrees.

Further, the lower template is provided with an embedded hole, and the embedded sleeve is embedded in the embedded hole.

Further, the inner wall of the embedded hole is provided with a first positioning surface, the outer side wall of the embedded sleeve is provided with a second positioning surface, and the first positioning surface is used for being in interference fit with the second positioning surface.

Further, the side walls of the lifting clamp blocks close to each other are concavely provided with L-shaped clamp grooves, and the clamp grooves of the lifting clamp blocks are surrounded to form clamp holes.

Further, the rivet clamping mechanism further comprises a supporting column arranged in the embedded sleeve, the lifting clamping blocks are distributed in the circumferential direction of the supporting column in an annular array mode, and the supporting column is located at the center of the clamping hole.

The utility model has the beneficial effects that: in practical application, when the die is opened between the upper die holder and the lower die holder, the lifting driving module drives the lifting clamping blocks to lift, so that the bottom ends of the stop inclined planes on the lifting clamping blocks are in the highest positions and open, at the moment, the rivets with the required number are placed in the clamping holes of the rivet clamping mechanisms, the workpiece is placed in the rivet pressing and discharging cavity, the rivet pressing side edges of the workpiece are respectively positioned on the rivets, then the upper die holder and the lower die holder are clamped, the stamping plate applies downward stamping force to the workpiece, the rivets and the rivet clamping mechanisms, the lifting driving module drives the lifting clamping blocks to descend along the lifting inclined grooves respectively, and the lifting inclined grooves are obliquely arranged from top to bottom towards the central axis close to the embedded sleeve, so that the lifting clamping blocks can be mutually close to each other in the downward movement process, the rivet is clamped by the lifting clamping blocks, and the position precision and stability of the rivet are ensured, and the rivet is accurately pressed on the workpiece when the upper die holder and the lower die holder are completely clamped. After the press riveting is completed, the upper die holder and the lower die holder are opened, the lifting driving module drives the lifting clamping blocks to lift and restore to the initial position, so that the lifting clamping blocks are opened to loosen the rivet after the press riveting, the rivet after the press riveting is conveniently taken out, the next rivet is conveniently placed in the clamping hole, and the rivet is convenient and efficient to take and place. The lifting clamping blocks are stable in lifting, and the plurality of lifting clamping blocks are mutually closed or opened to clamp or loosen the rivet, so that the position precision and stability of the rivet in the riveting process are improved, the rivet is conveniently taken and placed, and the riveting quality and efficiency are greatly improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model in a closed state.

Fig. 2 is a schematic structural view of the present utility model in a use state after the upper die holder and the stamping plate are hidden.

FIG. 3 is a cross-sectional view of the present utility model after concealing the upper die base and the stamping plate.

Fig. 4 is a schematic partial structure of the lifting clamp blocks in an open state.

Fig. 5 is a schematic partial structure of a plurality of lifting clamp blocks in a closed state.

Fig. 6 is a schematic perspective view of a rivet clamping mechanism of the present utility model.

Fig. 7 is a schematic perspective view of the rivet clamping mechanism of the present utility model after the embedded sleeve is hidden.

Fig. 8 is a schematic perspective view of the insert pocket of the present utility model.

Reference numerals illustrate:

1. an upper die holder; 2. a lower die holder; 3. a stamping plate; 4. a lower template; 6. a rivet clamping mechanism; 7. a lifting driving module; 8. embedding a sleeve; 9. a lifting chute; 10. lifting the clamping blocks; 11. clamping holes; 12. a stop surface; 13. a stop ramp; 14. a lifting driving assembly; 15. a mounting hole; 16. a lifting rod; 17. an elastic member; 18. a sealing head; 19. embedding holes; 20. a first positioning surface; 21. a second positioning surface; 23. a workpiece; 24. and (5) a rivet.

Detailed Description

The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.

Embodiment one.

As shown in fig. 1 to 8, the high-efficiency riveting die provided by the utility model comprises an upper die holder 1, a lower die holder 2 positioned below the upper die holder 1, a stamping plate 3 arranged on the bottom surface of the upper die holder 1, a lower die plate 4 arranged on the top surface of the lower die holder 2, a riveting discharging cavity concavely arranged on the lower die plate 4 and a plurality of rivet clamping mechanisms 6 arranged on the lower die plate 4, wherein the rivet clamping mechanisms 6 are distributed on the outer side of the riveting discharging cavity, each rivet clamping mechanism 6 comprises a lifting driving module 7 embedded on the lower die holder 2, an embedding sleeve 8 embedded on the lower die plate 4, a plurality of lifting inclined grooves 9 arranged on the embedding sleeve 8 and a plurality of lifting clamping blocks 10 respectively connected with the lifting inclined grooves 9 in a sliding manner, the lifting inclined grooves 9 are distributed on the inner wall of the embedding sleeve 8 in an annular array, the plurality of lifting clamping blocks 10 are surrounded into clamping holes 11, a stop surface 12 is arranged on the inner wall of the lifting inclined grooves 9, a stop inclined surface 13 is arranged on the outer side wall of the lifting clamping blocks 10 and is matched with the stop inclined surface 13, the inclined surface 13 is in a manner and is inclined towards the central axis 8 from the upper side and the lower side and is far away from the central axis 8 and is arranged towards the lifting driving module 8 and is used for driving the lifting clamping sleeve to be inclined towards the lifting clamping sleeve 8; when the bottom end of the stop inclined surface 13 is abutted against the stop surface 12, the plurality of lifting clamp blocks 10 are close to each other; when the tip of the stop slope 13 collides with the stop surface 12, the plurality of lifting clamp blocks 10 are opened to each other.

In practical application, when the die is opened between the upper die holder 1 and the lower die holder 2 at the beginning, the lifting driving module 7 drives the lifting clamping blocks 10 to lift up, so that the bottom ends of the stop inclined planes 13 on the lifting clamping blocks 10 are in the highest positions and open, at the moment, the rivets 24 with required quantity are placed in the clamping holes 11 of the rivet clamping mechanisms 6, then the workpiece 23 is placed in the rivet pressing and discharging cavity, so that the riveting sides of the workpiece 23 are respectively positioned on the rivets 24, then the upper die holder 1 and the lower die holder 2 are clamped, the stamping plate 3 applies downward stamping force to the workpiece 23, the rivets 24 and the rivet clamping mechanisms 6, the lifting driving module 7 drives the lifting clamping blocks 10 to descend along the lifting chute 9, and the lifting clamping blocks 10 are respectively moved downwards along the lifting chute 9. After the press riveting is completed, the upper die holder 1 and the lower die holder 2 are opened, the lifting driving module 7 drives the lifting clamping blocks 10 to lift and restore to the initial position, so that the lifting clamping blocks 10 are opened to loosen the rivet 24 after the press riveting, the product after the press riveting is convenient to take out materials, the next rivet 24 is convenient to place in the clamping hole 11, and the rivet 24 is convenient and efficient to take and place. The lifting clamp splice 10 is stable in lifting, and the plurality of lifting clamp splice 10 are closed or opened to clamp or loosen the rivet 24, so that the position precision and stability of the rivet 24 in the riveting process are improved, the rivet 24 is conveniently taken and placed, and the riveting quality and efficiency are greatly improved.

In this embodiment, the lifting driving module 7 includes a plurality of lifting driving assemblies 14 disposed in the lower die holder 2, and lifting ends of the plurality of lifting driving assemblies 14 respectively abut against bottom surfaces of the plurality of lifting clamping blocks 10 in a one-to-one correspondence. The plurality of lifting driving assemblies 14 respectively drive the plurality of lifting clamping blocks 10 to lift, thereby improving the lifting stability of the lifting clamping blocks 10.

In this embodiment, the lifting driving assembly 14 includes a mounting hole 15 formed in the lower die holder 2, a lifting rod 16 slidably disposed in the mounting hole 15, and an elastic member 17 disposed in the mounting hole 15, wherein two ends of the elastic member 17 respectively abut against a bottom wall of the mounting hole 15 and a bottom end surface of the lifting rod 16, and a top end surface of the lifting rod 16 abuts against a bottom surface of the corresponding lifting clamp block 10; preferably, the elastic member 17 employs a spring. When the lifting clamp block 10 is at the highest position, the elastic piece 17 is in an extended state, and the plurality of lifting clamp blocks 10 are opened; when the lifting clamp block 10 is at the lowest position, the elastic member 17 is in a compressed state, and the plurality of lifting clamp blocks 10 are close to each other. The lifting driving assembly 14 adopts an elastic mode to realize lifting of the lifting clamping blocks 10, which is beneficial to the mutual closing or opening of a plurality of lifting clamping blocks 10, plays a role in buffering protection for the die assembly of the upper die holder 1 and the lower die holder 2, avoids the excessively hard impact collision between the stamping plate 3 and the workpiece 23 and the like when the die assembly of the upper die holder 1 and the lower die holder 2 is carried out, and can realize automatic resetting of the lifting clamping blocks 10.

In this embodiment, the lifting driving assembly 14 further includes a sealing head 18 detachably mounted at the bottom end of the mounting hole 15, and the bottom end of the elastic member 17 abuts against the sealing head 18. The arrangement of the sealing head 18 facilitates the disassembly and maintenance of the elastic member 17 and the lifting rod 16.

In this embodiment, the angle between the lifting chute 9 and the central axis of the insert sleeve 8 is 3 ° to 5 °. The angular setting of the included angle improves the efficiency of the plurality of lifting clamp blocks 10 being drawn together or opened apart from one another on the basis of facilitating the removal of rivets 24. Preferably, the angle between the lifting chute 9 and the central axis of the insert sleeve 8 is 5 °, which angle is set to the optimum effect of clamping or unclamping the rivet 24.

In the embodiment, the lower template 4 is provided with an embedded hole 19, the embedded sleeve 8 is embedded in the embedded hole 19, and the top surface of the embedded sleeve 8 is not higher than the top surface of the lower template 4; the structure design is convenient for the disassembly and assembly of the embedded sleeve 8, so that the structure of the embedded sleeve 8 and the lower template 4 is compact.

In this embodiment, the inner wall of the embedding hole 19 is provided with a first positioning surface 20, the outer side wall of the embedding sleeve 8 is provided with a second positioning surface 21, and the first positioning surface 20 is used for being in interference fit with the second positioning surface 21. When the embedded sleeve 8 is assembled with the lower template 4, the second positioning surface 21 is matched with the first positioning surface 20 in a positioning way, so that the embedded sleeve 8 and the lower template 4 can be accurately installed, the position accuracy and stability of the embedded sleeve 8 on the lower template 4 are improved, and the embedded sleeve 8 and the embedded hole 19 of the lower template 4 are prevented from rotating relatively.

In this embodiment, the side walls of the lifting clamp blocks 10 close to each other are concavely provided with L-shaped clamp grooves, and the clamp grooves of the lifting clamp blocks 10 are surrounded to form clamp holes 11. By means of the structural design, when the rivet 24 is located in the clamping hole 11, the bottom wall of the clamping groove can support the rivet 24, and stability of the rivet 24 in the clamping hole 11 is further improved.

Embodiment two.

The present embodiment differs from the first embodiment in that: the rivet clamping mechanism 6 further comprises a supporting column arranged in the embedded sleeve 8, a plurality of lifting clamping blocks 10 are distributed in the circumferential direction of the supporting column in an annular array, and the supporting column is positioned at the center of the clamping hole 11. By means of the structural design, when the rivet 24 is located in the clamping hole 11, the rivet 24 can be supported by the bearing column, and stability of the rivet 24 in the clamping hole 11 is further improved.

The other structures of the present embodiment are the same as those of the first embodiment, and the same structure adopts the analysis of the first embodiment, which is not described herein.

The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.

Claims (10)

1. The utility model provides a high-efficient riveting mould which characterized in that: comprises an upper die holder (1), a lower die holder (2) positioned below the upper die holder (1), a stamping plate (3) arranged on the bottom surface of the upper die holder (1), a lower die plate (4) arranged on the top surface of the lower die holder (2), a press riveting discharging cavity concavely arranged on the lower die plate (4) and a plurality of rivet clamping mechanisms (6) arranged on the lower die plate (4), wherein the rivet clamping mechanisms (6) are distributed on the outer side of the press riveting discharging cavity, the rivet clamping mechanisms (6) comprise a lifting driving die set (7) embedded on the lower die holder (2), an embedded sleeve (8) embedded on the lower die plate (4), a plurality of lifting chute (9) arranged on the embedded sleeve (8) and a plurality of lifting clamping blocks (10) respectively connected with the lifting chute (9) in a sliding mode, the lifting chute (9) are distributed on the inner wall of the embedded sleeve (8) in an annular array, the plurality of lifting clamping blocks (10) are enclosed into clamping holes (11), a stop surface (12) is arranged on the inner wall of the lifting chute (9), the outer side wall of the lifting clamping blocks (10) is provided with a slope (13) which is inclined towards the upper slope (13) and is arranged away from the lower slope (13) and is inclined towards the upper slope (13) and is far away from the lower slope (13) and is arranged, the lifting end of the lifting driving module (7) is used for driving the lifting clamping blocks (10) to lift relative to the embedded sleeve (8); when the bottom end of the stop inclined surface (13) is in contact with the stop surface (12), the lifting clamp blocks (10) are close to each other; when the top end of the stop inclined surface (13) is abutted against the stop surface (12), the plurality of lifting clamp blocks (10) are opened mutually.

2. The efficient press riveting die of claim 1, wherein: the lifting driving module (7) comprises a plurality of lifting driving assemblies (14) arranged in the lower die holder (2), and lifting ends of the lifting driving assemblies (14) are respectively in one-to-one correspondence with the bottom surfaces of the lifting clamping blocks (10).

3. The high-efficiency press riveting die as claimed in claim 2, wherein: the lifting drive assembly (14) comprises a mounting hole (15) formed in the lower die holder (2), a lifting rod (16) arranged in the mounting hole (15) in a sliding manner, and an elastic piece (17) arranged in the mounting hole (15), wherein two ends of the elastic piece (17) respectively abut against the bottom wall of the mounting hole (15) and the bottom end surface of the lifting rod (16), and the top end surface of the lifting rod (16) abuts against the bottom surface of the corresponding lifting clamp block (10).

4. A high efficiency clinching die as claimed in claim 3, wherein: the lifting driving assembly (14) further comprises a sealing head (18) detachably arranged at the bottom end of the mounting hole (15), and the bottom end of the elastic piece (17) is abutted against the sealing head (18).

5. The efficient press riveting die of claim 1, wherein: the included angle between the lifting chute (9) and the central axis of the embedded sleeve (8) is 3-5 degrees.

6. The efficient press riveting die as defined in claim 5, wherein: the included angle between the lifting chute (9) and the central axis of the embedded sleeve (8) is 5 degrees.

7. The efficient press riveting die of claim 1, wherein: the lower template (4) is provided with an embedded hole (19), and the embedded sleeve (8) is embedded in the embedded hole (19).

8. The high-efficiency press riveting die as defined in claim 7 wherein: the inner wall of the embedded hole (19) is provided with a first positioning surface (20), the outer side wall of the embedded sleeve (8) is provided with a second positioning surface (21), and the first positioning surface (20) is used for being in interference fit with the second positioning surface (21).

9. A high efficiency clinching die as claimed in any one of claims 1 to 8, wherein: the side walls of the lifting clamp blocks (10) close to each other are concavely provided with L-shaped clamp grooves, and the clamp grooves of the lifting clamp blocks (10) are surrounded to form clamp holes (11).

10. A high efficiency clinching die as claimed in any one of claims 1 to 8, wherein: the rivet clamping mechanism (6) further comprises a supporting column arranged in the embedded sleeve (8), the lifting clamping blocks (10) are distributed in the circumferential direction of the supporting column in an annular array mode, and the supporting column is located at the center of the clamping hole (11).