CN214290626U - Composite die holder for thermal correction of edge cutting and punching belt of fractured connecting rod - Google Patents

Abstract

The utility model discloses a composite die holder for thermal correction of a trimming and punching belt of an expansion-breaking connecting rod, belonging to the field of metal part processing, and the composite die holder for thermal correction of the trimming and punching belt of the expansion-breaking connecting rod comprises an upper die and a lower die; the upper die comprises an upper die base, a punch clamp and an edge cutting punch connected with the punch clamp; the lower die comprises a lower die base, a trimming punching die base is arranged above the lower die base, nitrogen springs are arranged on two sides of the trimming punching die base, a transverse plate is arranged at the tops of the nitrogen springs, a die plate is arranged on the transverse plate, and trimming female dies are arranged in the die plate. The utility model discloses a compound die holder for bloated disconnected connecting rod side cut punching belt thermal correction utilizes a closed single-point press, adopts special compound die holder to realize getting rid of the remaining overlap of bloated disconnected connecting rod and when even skin to ensure that the forging does not produce the technological method who warp.

Description

Composite die holder for thermal correction of edge cutting and punching belt of fractured connecting rod

Technical Field

The utility model relates to a metal parts machining field especially relates to a compound die holder that is used for broken connecting rod side cut punching tape thermal correction.

Background

After the forging is pressed, residual metal (flash and connecting skin) is required to be removed to meet the shape and size requirements of the forging, however, when the long-rod type forging is trimmed and punched, the forging is easy to deform, particularly, products with higher precision requirements, such as a fractured connecting rod, are easy to deform after trimming and punching, and the precision requirements of the forging can be met only by adding thermal correction or cold correction. The process flow has the following defects: 1. the number of the moulds is large, and the manufacturing cost of the moulds is high; 2. the process is more, the equipment is more, the production efficiency is lower, and the energy consumption cost of a single piece is higher; 3. the number of the working procedures of trimming, punching and hot correction or cold correction is more, which reaches 4, and the labor cost of a single piece is higher.

With the continuous rising of labor cost and the development of equipment integration and intellectualization, in the forging process, the equipment investment is reduced, the personnel operation is reduced, the operation is simple, the production is intelligentized, and therefore the reduction of the manufacturing cost is the future development trend. In view of this, it is one of the main directions to adopt procedure combination and procedure simplification in the forging process, reduce personnel and equipment investment to reduce manufacturing cost, and improve enterprise competitiveness.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a composite die holder for bursting connecting rod trimming and punching with thermal correction is provided utilizes a closed single-point press, adopts special composite die holder to realize getting rid of the residual overlap of the bursting connecting rod and the process method who links the skin to ensure that the forging does not produce the deformation.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a composite die holder for thermal correction of an edge cutting and punching belt of an expansion-breaking connecting rod, which comprises an upper die and a lower die; the upper die comprises an upper die base, a punch clamp positioned below the upper die base and an edge cutting punch connected to the punch clamp; the lower die comprises a lower die seat, a trimming and punching die seat is arranged above the lower die seat, nitrogen springs are arranged on two sides of the trimming and punching die seat, a transverse plate is arranged at the top of each nitrogen spring, a template is arranged on each transverse plate, a trimming female die is arranged in each template, and a forging piece is arranged in each trimming female die; the lower die further comprises a small-hole punch seat and a large-hole punch seat, and a small-hole punch and a large-hole punch are respectively arranged in the small-hole punch seat and the large-hole punch seat.

Preferably, the trimming punch is connected with the punch clamp and the upper die holder through bolts.

Preferably, the upper side and the lower side of the bottom of the lower die base are provided with n-shaped depressions.

The utility model has the advantages that:

the upper sliding block drives the trimming punch to move downwards, the trimming punch contacts the connecting rod forge piece, the sliding block and the trimming punch press the forge piece to continuously move downwards, meanwhile, the transverse plate of the lower die holder and the ejector arranged on the transverse plate support the connecting rod forge piece to move along with the connecting rod forge piece, the transverse plate transmits acting force to the nitrogen spring, the trimming punch and the punching punch respectively cut off residual flash and connecting skin along with the continuous downward movement of the sliding block to a bottom dead center, the nitrogen spring, the transverse plate, the ejector and the trimming punch still interact with the forge piece along with the upward return stroke of the upper sliding block, when the ejection stroke reaches the top dead center, the trimming punch leaves the forge piece, the interaction force disappears, the rear sliding block continuously moves upwards to complete a return stroke, trimming and punching can be realized through the composite die holder and have the thermal correction function, compared with the original production process, 1-2 workers can be reduced, the process is combined and simplified, the process flow is shortened, the production takt and the production efficiency are improved, the production equipment is reduced, the equipment investment and the energy consumption are reduced, and the size of the forged piece is not changed when the overlap and the connecting skin of the expansion-fracture connecting rod forged piece are cut off.

Drawings

Fig. 1 is a front view of a composite die holder for thermal correction of a fractured connecting rod trimming and punching strip according to an embodiment of the present invention;

fig. 2 is a sectional view taken along a line a-a of the composite die holder for thermal correction of the fractured connecting rod trimming and punching strip according to the embodiment of the present invention;

fig. 3 is a left side view of the composite die holder for thermal correction of the fractured connecting rod trimming and punching strip according to the embodiment of the present invention.

In the figure:

1. an upper die holder; 2. punching head clips; 3. flashing; 4. trimming the female die; 5. a template; 6. a transverse plate; 7. a lower die holder; 8. a nitrogen spring; 9. trimming and punching die holders; 10. trimming punches; 11. forging; 12. punching a small hole; 13. a small hole punch seat; 14. a large-hole punch; 15. a large-hole punch seat.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 3, the composite die holder for thermal correction of the connecting rod trimming and punching strip provided in the embodiment includes an upper die and a lower die: the upper die comprises an upper die base 1, a punch clamp 2 positioned below the upper die base 1 and an edge cutting punch 10 connected to the punch clamp 2; the lower die comprises a lower die seat 7, a trimming and punching die seat 9 is arranged above the lower die seat 7, nitrogen springs 8 are arranged on two sides of the trimming and punching die seat 9, a transverse plate 6 is arranged at the top of each nitrogen spring 8, a template 5 is arranged on each transverse plate 6, a trimming female die 4 is arranged in each template 5, and a forging piece 11 is arranged in each trimming female die 4; the lower die also comprises a small-hole punch seat 13 and a large-hole punch seat 15, wherein the small-hole punch seat 13 and the large-hole punch seat 15 are respectively provided with a small-hole punch 12 and a large-hole punch 14, in the actual use process, the connecting rod forged piece after finish forging is placed in a special composite die seat, the forged piece 11 is positioned by utilizing the shape of the cutting edge of a female die and the cavity of an ejector, then, a press switch is started, an upper die seat 1 drives an edge cutting punch 10 to move downwards, the edge cutting punch 10 is in contact with the connecting rod forged piece, a sliding block and the edge cutting punch 10 press the forged piece 11 to continue to move downwards, meanwhile, a transverse plate 6 of a lower die seat 7 and the ejector arranged on the transverse plate support the connecting rod forged piece to move along with the transverse plate 6, acting force is transmitted to a nitrogen spring 8, the residual flash 3 and a connecting skin are respectively cut off by the edge cutting punch 10 and the punching punch as the sliding block continues to move downwards to a lower dead center, and then, and (3) with the upward return stroke of the upper sliding block, the nitrogen spring 8, the transverse plate 6, the ejector and the trimming punch 10 still interact with the forged piece 11, when the ejection stroke reaches the top dead center, namely the trimming punch 10 leaves the forged piece 11, the interaction force disappears, the rear sliding block continues to move upwards to complete a return stroke, finally, the flash 3 and the connecting sheet are taken out and placed in a waste box, the connecting rod forged piece is taken out and placed on an air cooling line and transferred to a blank box, and the trimming and punching belt thermal correction process is completed.

For the convenience of connection, the trimming punch 10 is further connected with the punch holder 2 and the upper die base 1 through bolts.

In order to limit the position of the composite die, n-shaped depressions are further arranged on the upper side and the lower side of the bottom of the lower die holder 7.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims (3)

1. The utility model provides a compound die holder that is used for bloated disconnected connecting rod side cut punched tape thermal correction which characterized in that, includes mould and lower mould:

the upper die comprises an upper die base (1), a punch clamp (2) positioned below the upper die base (1) and an edge cutting punch (10) connected to the punch clamp (2);

the lower die comprises a lower die seat (7), a trimming and punching die holder (9) is arranged above the lower die seat (7), nitrogen springs (8) are arranged on two sides of the trimming and punching die holder (9), a transverse plate (6) is arranged at the top of each nitrogen spring (8), a die plate (5) is arranged on each transverse plate (6), a trimming female die (4) is placed in each die plate (5), and a forging piece (11) is placed in each trimming female die (4);

the lower die further comprises a small-hole punch seat (13) and a large-hole punch seat (15), and the small-hole punch seat (13) and the large-hole punch seat (15) are internally provided with a small-hole punch (12) and a large-hole punch (14) respectively.

2. The compound die holder for thermal correction of a fractured connecting rod trimming punch strip of claim 1, wherein:

the trimming punch (10) is connected with the punch clamp (2) and the upper die holder (1) through bolts.

3. The compound die holder for thermal correction of a fractured connecting rod trimming punch strip of claim 1, wherein:

the upper side and the lower side of the bottom of the lower die seat (7) are provided with n-shaped depressions.

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