CN217512793U - Female die structure for cold header - Google Patents

Abstract

The utility model belongs to the technical field of rivet processing equipment and specifically relates to a female die structure for cold heading machine is related to, including the bed die, the shaping downthehole interpolation of bed die is equipped with towards the needle, and it includes the fixed part and sets up the drift portion in fixed part one end to dash the needle, the drift portion is the round platform form, the interval evenly is provided with a plurality of strengthening rib strip in the drift portion, and this application has the effect of being convenient for towards needle centering.

Description

Female die structure for cold header

Technical Field

The application relates to the field of rivet processing equipment, in particular to a female die structure for a cold header.

Background

The rivet is a part which is connected with a riveted part by utilizing self deformation or interference in riveting, is used as a common fixed connecting part and is fixed by a special hand riveter, and has convenient operation and wide application range.

The rivet usually comprises nail core and nail body, and the nail core needs to utilize bed die and the towards needle on the cold heading machine to punch a hole to the nail core before the combination with the nail body, and the round shaping of bed die is downthehole in towards the needle plug promptly, and the nail core is held down the fast impact and is gone into in the bed die and towards the needle collision outside manipulator, and then realizes offering of guiding groove, carries out deep groove and hem operation at last again.

At present, a punch head part of a punching needle is generally in a conical shape, and is difficult to center during punching, so that a hole is inclined when a nail core is punched, the quality of a rivet is unqualified easily, and a part to be improved exists.

SUMMERY OF THE UTILITY MODEL

In order to facilitate towards needle centering, the application provides a female die structure for cold heading machine.

The application provides a pair of female die structure for cold heading machine adopts following technical scheme:

the utility model provides a female die structure for cold heading machine, includes the bed die, and the shaping downthehole interpolation of bed die is equipped with towards the needle, dashes the needle and includes fixed part and the drift portion of setting in fixed part one end, the drift portion is the round platform form, the interval evenly is provided with a plurality of strengthening rib strip in the drift portion.

Through adopting above-mentioned technical scheme, a plurality of strengthening rib in the drift portion has improved the structural strength of drift portion, sets the drift portion of towards the needle to the round platform form, has increased the area of contact of drift portion with the nail core when towards the needle and has dashed when establishing, has reduced towards the needle and has dashed the possibility that takes place the skew slope between the needle core when establishing, and then the centering when being convenient for towards the needle and dashed and establish.

Optionally, the fixed part is towards the one end of drift portion has seted up a plurality of installation draw-in groove, be provided with on the drift portion with the joint spare of installation draw-in groove looks adaptation, the joint spare with installation draw-in groove adopts interference fit.

Through adopting above-mentioned technical scheme, set up a plurality of installation draw-in groove on the fixed part, set up on the drift portion with the joint spare of installation draw-in groove looks adaptation, through the grafting cooperation between joint spare and installation draw-in groove, realized the fixed part and fixed dismantled between the drift portion, the cost has been practiced thrift in the change of the drift portion of being convenient for. The interference fit improves the centering performance of the punch head and the fixing part, and simultaneously improves the bearing capacity of the punch pin.

Optionally, the clamping piece extends into the outer wall of one end in the mounting clamping groove and is provided with a plurality of arc-shaped grooves, and the inner wall of the mounting clamping groove is provided with arc-shaped blocks abutted to the arc-shaped grooves.

Through adopting above-mentioned technical scheme, through the arc wall on the joint spare and the joint cooperation of arc piece in the installation slot, produced impact force plays the dispersion when punching a hole to the punch head portion, and then has improved the bearing capacity and the life of punch head portion.

Optionally, an included angle between a generatrix of the punch part and an axis of the punch part is alpha degree, and alpha is 45 degrees.

By adopting the technical scheme, if the included angle between the bus of the punching head part and the punching needle is too small, the situation that the centering is difficult to occur during punching of the punching needle can still occur; if the angle is too large, the situation that a hole cannot be punched can occur, so that the included angle alpha between the bus of the punch head and the axis of the punch head is preferably controlled within the range of 30-60 degrees, the included angle alpha is set to be 45 degrees, common angles are used, the punch is convenient to process, meanwhile, the punch can be realized, and the practicability and the adaptability of the female die structure are improved.

Optionally, the female die is provided with a plurality of guide assemblies coaxially on the inner wall of one end of the punch part, the guide assemblies are uniformly arranged at intervals along the length direction of the female die, and the punch needle penetrates through the guide assemblies.

By adopting the technical scheme, the punching needle is arranged in the female die forming hole in a penetrating manner through the guide assembly, the guide limiting effect is exerted on the punching needle through the guide assembly, the punching needle and the female die forming hole are arranged coaxially all the time as far as possible, and the centering of the punching needle is facilitated.

Optionally, the direction subassembly includes coaxial setting at the downthehole guide ring of bed die shaping and evenly sets up the connecting plate between guide ring outer wall and the downthehole wall of shaping along shaping hole axial interval, evenly be provided with a plurality of sliding part along axial interval on the guide ring inner wall, the fixed part outer wall with sliding part butt.

By adopting the technical scheme, when the punching needle is inserted, if the aperture of the guide ring is larger, the punching needle is easy to deviate and rock; if the guide ring aperture is smaller, the punching needle is difficult to insert, the punching efficiency is reduced, and the sliding pieces are axially arranged at intervals on the guide ring, so that the inserting of the punching needle and the centering of the punching needle can be facilitated, and the punching machine is convenient and fast.

Optionally, the inner wall of the molding hole of the female die, which deviates from one side of the guide assembly, is detachably provided with an anti-collision sleeve.

Through adopting above-mentioned technical scheme, the nail core can bump the friction with bed die shaping downthehole wall towards establishing the in-process, and bed die shaping downthehole wall takes place wearing and tearing in the long-term use, and the nail core can take place the circumstances of skew decentraction when getting into the shaping downthehole, through dismantling the anticollision cover that sets up on bed die shaping downthehole wall, can change after anticollision cover wearing and tearing, has reduced bed die shaping downthehole wearing and tearing and have caused the nail core possibility of the skew that punches a hole.

Optionally, the anti-collision sleeve is a tungsten steel anti-collision sleeve.

By adopting the technical scheme, the tungsten steel has the characteristics of high hardness, high strength, corrosion resistance and high temperature resistance, the service life of the tungsten steel is dozens of times or even dozens of times of that of common steel, the service life of the female die structure is further prolonged, and the cost is saved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the structural strength of the punch part is improved through the plurality of reinforcing ribs in the punch part, the punch part of the punching needle is arranged to be in a round table shape, the contact area of the punch part and the nail core is increased when the punching needle is punched, the possibility of offset and inclination between the punch part and the nail core when the punching needle is punched is reduced, and then the punching needle is convenient to center when the punching needle is punched.

2. The punching needle is guided and limited through the guide assembly and the sliding piece, the axis of the punching needle is ensured to be positioned at the same position as far as possible when the punching needle is inserted and arranged, and then the needle core is convenient to center when punching.

Drawings

Fig. 1 is a schematic diagram of an axis measurement of a die structure overall structure mainly embodying a cold header in an embodiment of the present application.

Fig. 2 is a schematic full-section view mainly showing the internal structure of the female die and the punch pin in the embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is an exploded view of the connection between the anti-collision sleeve and the female die in the embodiment of the present application.

Reference numerals are as follows: 1. a female die; 11. punching a hole part; 12. an installation part; 2. forming holes; 3. punching a needle; 31. a fixed part; 32. punching the head part; 4. a guide assembly; 41. a guide ring; 42. a connecting plate; 5. a groove; 6. a sliding member; 7. a clamping piece; 8. installing a clamping groove; 9. an arc-shaped slot; 10. an arc-shaped block; 13. an anti-collision sleeve; 14. inserting grooves; 15. a bump; 16. and reinforcing ribs.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses female die structure for cold heading machine.

Referring to fig. 1, a female die structure for cold heading machine, including female die 1 and drift 3, female die 1 includes drift 11 and installation department 12, in this embodiment, drift 11 and installation department 12 all are cylindricly, and drift 11 sets up with the coaxial integrated into one piece of installation department 12, drift 11 and installation department 12 have run through along the axis direction and have seted up shaping hole 2, installation department 12 is used for the location installation of female die 1 with the cold heading machine, drift 11 is used for carrying out the operation of punching a hole of nook closing, drift 3 inserts and establishes in shaping hole 2, the realization is punched a hole to the nook closing.

Referring to fig. 1 and 2, a plurality of guide assemblies 4 are uniformly installed on the inner wall of the forming hole 2 of the female die 1 on one side of the installation portion 12 along the axial direction of the female die 1 at intervals, in the embodiment, two sets of guide assemblies 4 are installed, each guide assembly 4 comprises a guide ring 41 and a connecting plate 42, the guide rings 41 are coaxially arranged with the forming hole 2 of the female die 1, the guide rings 41 are fixed with the inner wall of the forming hole 2 of the female die 1 through the connecting plates 42, and the connecting plates 42 are integrally arranged with the guide rings 41 and the female die 1.

Evenly seted up a plurality of recess 5 along self axial interval on the 41 inner walls of guide ring, the embedded slide 6 that is equipped with of recess 5, dash needle 3 pass guide ring 41 and with 6 outer wall butts of slide, in this embodiment, recess 5 has seted up threely, slide 6 is the ball, through direction subassembly 4 to dash needle 3 lead spacing be convenient for dash centering of needle 3, and be convenient for dash inserting of needle 3 through slide 6 in the guide ring 41 and establish, improve the convenience.

Referring to fig. 2 and 3, towards needle 3 includes fixed part 31 and drift portion 32, fixed part 31 is inserted and is established in direction subassembly 4, actually dashing to hold through outside apparatus when establishing fixedly, drift portion 32 inserts through a plurality of joint spare 7 fixed mounting on the one end terminal surface of establishing in bed die 1 is inserted to fixed part 31, and there is certain change clearance between drift portion 32 and the fixed part 31, be convenient for towards the change of head portion 32, set up the installation card groove 8 with 7 looks adaptations of joint spare on the fixed part 31 terminal surface, joint spare 7 adopts interference fit with installation card groove 8, interference fit has improved the centering nature of drift portion 32 and fixed part 31 spare, the bearing capacity of towards needle 3 has been improved simultaneously.

One end that joint spare 7 stretched into in the installation slot 8 has seted up a plurality of arc 9, in this embodiment, joint spare 7 is cylindrical joint post, two have been seted up around joint spare 7 axial interval to arc 9, integrated into one piece has the arc piece 10 with 9 looks joint adaptations of arc on the 8 inner walls of installation slot, through the joint cooperation of arc piece 10 in arc 9 on the joint spare 7 and the installation slot 8, produced impact force plays the dispersion when punching a hole to bluff head portion 32, can improve bluff head portion 32's bearing capacity and life.

Referring to fig. 3, an included angle α is formed between the generatrix of the punch head portion 32 and the axis of the punch head portion, in this embodiment, α is 45 degrees, and the included angle α is set to be 45 degrees, so that a common angle is used, the punch head is convenient to process, meanwhile, the punch holes can be realized, and the practicability and the adaptability of the structure of the female die 1 are improved.

Refer to fig. 4, but bed die 1 is located demountable installation has crashproof cover 13 on 2 inner walls in shaping hole of 11 one ends of punching part, crashproof cover 13 adopts the tungsten steel material, 11 one end shaping hole 2 internal walls that deviate from installation department 12 of punching part have seted up a plurality of inserting groove 14 around the 1 axial of bed die, integrated into one piece has the lug 15 with 14 looks adaptations of inserting groove on the crashproof cover 13 outer wall, and then realize the demountable installation of crashproof cover 13 through the grafting cooperation of lug 15 with inserting groove 14, anticollision cover 13 through demountable installation, 2 inner walls in 1 shaping hole of bed die in the long-term use process of bed die 1 take place wearing and tearing have been reduced, make the nail core towards the possibility that self takes place the skew and is difficult to the centering when establishing.

Referring to fig. 2 and 3, a plurality of reinforcing ribs 16 are uniformly arranged in the punch part 32 of the punch pin 3 at intervals, the reinforcing ribs 16 are embedded when the punch part 32 is formed, the structural strength of the punch part 32 is improved by the plurality of reinforcing ribs 16, and a better punching effect can be obtained when punching.

The implementation principle of the female film structure for the cold header is as follows: before punching the nail core, inserting the punching needle 3 into the forming hole 2 of the female die 1 through the guide assembly 4 in the female die 1 to realize the coaxial arrangement of the punching needle 3 and the female die 1; when punching is carried out, the contact area between the circular truncated cone-shaped punch head 32 and the needle core is large, deviation is not easy to occur, and the centering difficulty of the punching needle 3 is further reduced. The tungsten steel anti-collision sleeve 13 in the forming hole 2 reduces the possibility of impact abrasion in the long-term use process of the female die 1 and reduces the possibility of deviation in the punching process of the needle core.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a female die structure for cold heading machine which characterized in that: including bed die (1), the shaping hole (2) interpolation of bed die (1) is equipped with towards needle (3), and towards needle (3) including fixed part (31) and punch head portion (32) of setting in fixed part (31) one end, punch head portion (32) are the round platform form, evenly be provided with a plurality of strengthening rib strip (16) at the interval in punch head portion (32).

2. The female die structure for a cold header as claimed in claim 1, wherein: fixed part (31) orientation a plurality of installation slot (8) have been seted up to the one end of drift portion (32), be provided with on drift portion (32) with joint spare (7) of installation slot (8) looks adaptation, joint spare (7) with installation slot (8) adopt interference fit.

3. The female die structure for a cold header as claimed in claim 2, wherein: the clamping piece (7) stretches into a plurality of arc-shaped grooves (9) are formed in the outer wall of one end in the mounting clamping groove (8), and arc-shaped blocks (10) which are connected with the arc-shaped grooves (9) in an abutting mode are arranged on the inner wall of the mounting clamping groove (8).

4. The female die structure for a cold header as claimed in claim 1, wherein: the included angle between the generatrix of the punch head part (32) and the axis of the punch head part is alpha degree, and alpha is 45 degrees.

5. The female die structure for a cold header as claimed in claim 1, wherein: the female die (1) deviates from a plurality of guide assemblies (4) are coaxially arranged on the inner wall of one end forming hole (2) of the punch part (32), the guide assemblies (4) are evenly arranged along the length direction of the female die (1) at intervals, and the punch needle (3) penetrates through the guide assemblies (4).

6. The female die structure for a cold header as claimed in claim 5, wherein: guide assembly (4) are including coaxial guide ring (41) of setting in bed die (1) shaping hole (2) and along shaping hole (2) axial interval evenly set up connecting plate (42) between guide ring (41) outer wall and shaping hole (2) inner wall, evenly be provided with a plurality of sliding member (6) along axial interval on guide ring (41) inner wall, fixed part (31) outer wall with sliding member (6) butt.

7. The female die structure for a cold header as claimed in claim 5, wherein: the forming hole (2) of the female die (1) deviates from the inner wall of one side of the guide assembly (4) and is detachably provided with an anti-collision sleeve (13).

8. The female die structure for a cold header according to claim 7, wherein: the anti-collision sleeve (13) is a tungsten steel anti-collision sleeve (13).

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