CN216801404U

CN216801404U - Press riveting jig

Info

Publication number: CN216801404U
Application number: CN202123155906.5U
Authority: CN
Inventors: 谭朝建
Original assignee: Suzhou Boyu Technology Co ltd
Current assignee: Suzhou Boyu Technology Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-06-24
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a press riveting jig, which relates to the field of hardware press riveting and comprises an upper die base, a cup, a shaft, a positioning needle, an elastic component, a lower die fixing base and a lower die base; the upper die base is positioned above the lower die base, and a supporting component is arranged between the upper die base and the lower die base; a T-shaped groove is formed in the lower die base, the lower die fixing base is installed in the horizontal portion at the upper end of the T-shaped groove, the elastic component is arranged in the vertical portion at the lower end of the T-shaped groove, and the positioning needle is installed in the elastic component; the lower die fixing seat is provided with the lower end part of a shaft, the upper end part of the shaft is fixedly connected with the cup, and the lower end part of the shaft is contacted with the positioning needle; an upper die base is arranged above the cup, and a supporting component is arranged around the cup. In the utility model, because the contact surface between the shaft and the cup is increased, the stability of the formed cup shaft is higher, the lateral impact resistance is higher, and the stability of the impeller is increased.

Description

Press riveting jig

Technical Field

The utility model relates to the technical field of hardware press riveting, in particular to a press riveting jig.

Background

In the technical field of processing, the demand on a die is more and more large, the connection between hardware is particularly important in the processing and production process of the impeller, and if the connection is poor, the defective rate is increased, so that the production cost is increased, and certain loss is caused to enterprises; and cup and interconnect of axle are mostly welding methods in traditional impeller production hardware, and its shortcoming leads to the product dynamic balance bad for the axle warp easily when radial atress. There is a continuing need for improvements in order to reduce the amount of wheel deformation when the wheel is radially stressed.

Chinese patent CN205270707U relates to a press riveting device for riveting a blind rivet nut on a plate. The pressure riveting device comprises: the first fixing seat is fixed on the rack; the base die is fixed on the first fixed seat; the elastic structure comprises a first end and a second end which are opposite, the first end is fixed on the base die, a first through hole which is communicated with the first end and the second end is formed in the elastic structure, and the first through hole is used for accommodating the rivet nut; and the opening of the movable sleeve faces the base die, the movable sleeve is sleeved outside the elastic structure, the second end of the movable sleeve props against the bottom of the movable sleeve, a second through hole is formed in the bottom of the movable sleeve, and the second through hole is aligned to the first through hole. Above-mentioned device is riveted to pressure adopts the mould pressure to rivet, and the rivet nut can not skid, and the pressure is riveted not only the fastening is pleasing to the eye, does not damage the screw thread again.

Chinese patent CN203778677U relates to a punching riveting die. The utility model provides a punching press riveting die, includes upper die base, die holder, layer board, pad foot, its characterized in that: a fixing plate is arranged below the upper die base, and riveting punching pins are distributed below the fixing plate; the lower die base is provided with a flat pressing plate matched with the riveting component, the flat pressing plate is also provided with a positioning needle corresponding to the riveting punching needle, and the lower part of the positioning needle is provided with a spring. The lower die base is provided with the flat pressing plate, the riveting accessories and the riveting main body parts can be assembled between the flat pressing plate and the lower die base, and the fixing plate arranged below the upper die base can be provided with the riveting punching pins according to riveting requirements, so that a plurality of riveting processes are combined into one step, and the positioning pins on the flat pressing plate avoid multiple alignment of multiple steps of processes, thereby improving the riveting precision.

Chinese patent CN201227891 and a riveting device on a punching and binding machine. The lower end of a lower die is connected with a lower fixing plate, the upper end of the lower die is provided with a guide rail, the upper end of the guide rail is connected with an upper die, the outer side of the upper die is provided with a heating block, the upper end of the heating block is provided with a pressing block, the pressing block is connected with a rack through a screw, the rack is matched with a press riveting motor gear, and the press riveting motor gear is arranged on a press riveting motor; set up the through-hole on briquetting, last mould, the guide rail, wear to put the pilot pin in the through-hole, its characterized in that: the outer wall of the positioning needle is sleeved with a clamp spring and a spring, the clamp spring is positioned at the lower end of the spring, and the clamp spring and the spring are arranged between the upper die and the pressing block; and an alarm device is arranged at the upper end of the positioning needle. The utility model realizes the purposes of simple structure, good use effect and prolonging the service life of the punching and binding machine.

Chinese patent CN111715793A discloses a rotary deep drawing forming die for a thin-wall cup-shaped piece, which comprises a punch, a forming female die and a lower die plate, wherein the forming female die is coaxially provided with a composite cavity for placing a blank, and the end surface of the punch, which is in contact with the blank, is a conical boss die surface; the composite cavity is formed by compounding a V-shaped cavity at the upper part and a rectangular cavity at the lower part, the two sides of the joint of the V-shaped cavity and the rectangular cavity are respectively provided with a multi-pass arc convex surface platform which is contacted with a blank, and the multi-pass arc convex surface platform consists of a plurality of convex surface platforms which are sequentially arranged from the top to the bottom and have sequentially increased arc radiuses; the number of the arc convex surface platforms on one side is one more than that of the arc convex surface platforms on the other side, so that the forming female die is an asymmetric annular revolving body, and the more arc convex surface platforms are arranged at the highest position of the side. The scheme can effectively improve the formability of steel materials, improve the comprehensive mechanical property of formed components and overcome the defect that the strength difference of the traditional thin-wall cup-shaped components formed by thinning and drawing is large.

However, the above-mentioned patents have a problem that welding of the product is unstable due to the amount of deformation when the product is subjected to radial impact when welded.

SUMMERY OF THE UTILITY MODEL

The utility model provides a press riveting jig, aiming at solving the problem that products are unstable in welding due to impact during welding in the prior art.

In order to realize the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

a press riveting jig comprises an upper die base, a cup, a shaft, a positioning pin, an elastic component, a lower die fixing base and a lower die base;

the upper die seat is positioned above the lower die seat, and a support assembly is arranged between the upper die seat and the lower die seat;

the lower die base is provided with a T-shaped groove, the lower die fixing base is installed in the upper end horizontal part of the T-shaped groove, the elastic part is arranged in the lower end vertical part of the T-shaped groove, and the positioning needle is installed in the elastic part;

the lower die fixing seat is provided with a lower end part of a shaft, the upper end part of the shaft is fixedly connected with the cup, and the lower end part of the shaft is contacted with the positioning needle;

an upper die base is arranged above the cup, and a supporting component is arranged around the cup.

Further, the die comprises an upper die for forming, wherein a groove is formed in the lower end face of the upper die base, and the upper die for forming is installed in the groove.

Furthermore, through holes are formed in the upper die base and the lower die base, the through holes of the upper die base correspond to the through holes of the lower die base up and down, and the supporting assemblies penetrate through the through holes corresponding to the upper die base and the lower die base up and down.

The cup forming device further comprises a forming lower die, a central hole is formed in the upper end face of the forming lower die, the chamfer end of the shaft is installed in the central hole, and a cup is sleeved on the upper end of the shaft.

Furthermore, the fit clearance between the lower forming die and the cup is smaller than 0.015mm, and the concentricity of the central hole of the lower forming die and the outer diameter of the cup is smaller than 0.01.

Furthermore, the outer diameter of the shaft and the inner diameter of the cup flanging hole are in interference fit, the fit tolerance of the outer diameter of the shaft and the inner diameter of the cup flanging hole is 0.02-0.03mm, and the fit of the shaft and the central hole of the lower forming die is in clearance fit with the diameter of less than 0.01 mm.

Further, the elastic member includes a spring.

Furthermore, the supporting component is a cylinder which is suitable for through holes formed in the upper die base and the lower die base.

Compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model adopts the cup shaft combined pressure riveting structure, which can reduce the deformation of the impeller after being formed when the impeller is impacted in the radial direction to the maximum extent, thereby keeping the stability of the product;

(2) in the utility model, because the contact surface between the shaft and the cup is increased, the stability of the formed cup shaft is higher, the lateral impact resistance is higher, and the stability of the impeller is improved.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a front view of the present invention;

the reference numbers are as follows: 1. an upper die holder; 2. forming an upper die; 3. a cup; 4. forming a lower die; 5. a shaft; 6. a lower die fixing seat; 7. a positioning pin; 8. a spring; 9. a lower die holder; 10. a support assembly.

Detailed Description

In order to make the purpose and technical solution of the present invention clearer, the following will clearly and completely describe the technical solution of the present invention with reference to the embodiments.

Example 1

The press riveting jig shown in fig. 1-3 comprises an upper die holder 1, a cup 3, a shaft 5, a positioning needle 7, an elastic component, a lower die fixing seat 6 and a lower die holder 9; the upper die holder 1 is positioned above the lower die holder 9, and a support assembly 10 is arranged between the upper die holder 1 and the lower die holder 9; a T-shaped groove is formed in the lower die base 9, the lower die fixing base 6 is installed in the upper end horizontal portion of the T-shaped groove, the elastic component is arranged in the lower end vertical portion of the T-shaped groove, the positioning pin 7 is installed in the elastic component, and specifically, the elastic component can select a spring 8; the lower end part of the shaft 5 is arranged on the lower die fixing seat 6, the upper end part of the shaft 5 is fixedly connected with the cup 3, and the lower end part of the shaft 5 is contacted with the positioning needle 7; an upper die base 1 is arranged above the cup 3, a supporting component 10 is arranged around the cup 3, and specifically, the supporting component 10 can be selected to be a cylinder which is suitable for through holes formed in the upper die base 1 and the lower die base 9.

Still including mould 2 and shaping lower mould 4 in the shaping, a recess has been seted up on the lower terminal surface of upper die base 1, install mould 2 in the shaping in the recess. Through holes are formed in the upper die base 1 and the lower die base 9, the through holes of the upper die base 1 correspond to the through holes of the lower die base 9 up and down, and the supporting component 10 penetrates through the through holes corresponding to the upper die base 1 and the lower die base 9 up and down. The upper end surface of the lower forming die 4 is provided with a central hole, the chamfer end of the shaft 5 is arranged in the central hole, and the upper end of the shaft 5 is sleeved with a cup 3. And the cup 3 is sleeved on the lower forming die 4 and is flatly attached to the lower forming die 4, when the upper forming die moves downwards, the upper forming die 2 is contacted with the cup 3 and the lower forming die 4, the upper die continues to move downwards to compress the spring 8 below the lower forming die 4, and meanwhile, the cup 3 moves downwards. And when the downward distance of the upper die reaches 5mm, the inner hole of the cup 3 is contacted with the end part of the shaft 5, the press riveting is started, the upper die continues to move downward, the shaft 5 is completely pressed into the central turning hole of the cup 3, and the press riveting operation is completed.

Specifically, the fit clearance between the lower forming die 4 and the cup 3 is less than 0.015mm, and the concentricity of the central hole of the lower forming die 4 and the outer diameter of the cup 3 is less than 0.01. The outer diameter of the shaft 5 and the inner diameter of the hole flanging of the cup 3 are in interference fit, the fit tolerance between the outer diameter of the shaft 5 and the inner diameter of the hole flanging of the cup 3 is 0.02-0.03mm, and the fit between the shaft 5 and the central hole of the lower forming die 4 is in clearance fit with the diameter smaller than 0.01 mm.

Specifically, axle 5 is put into shaping lower mould 4 until with the location contact of bottom, and pilot pin 7 is fixed on die holder 9, and when the lower pressure riveting of cope match-plate pattern, pilot pin 7 and axle 5 do not remove along with shaping lower mould 4, and when the pressure riveting is accomplished the back, the upper end of axle 5 has been impressed in the central turned hole of cup 3, because the cooperation of axle 5 and cup 3 is interference fit this moment, and axle 5 can be gone upward under the effect of spring 8 along with cup 3 and shaping upper mould 2, and the tip can break away from the contact with pilot pin 7 under axle 5 this moment.

The above are merely embodiments of the present invention, which are described in detail and with particularity, and therefore should not be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are within the scope of the present invention.

Claims

1. A press riveting jig is characterized by comprising an upper die base, a cup, a shaft, a positioning needle, an elastic part, a lower die fixing base and a lower die base;

2. The press riveting jig according to claim 1, further comprising an upper forming die, wherein a groove is formed in the lower end surface of the upper die holder, and the upper forming die is mounted in the groove.

3. The press riveting jig according to claim 1, wherein the upper die holder and the lower die holder are respectively provided with a through hole, the through hole of the upper die holder and the through hole of the lower die holder correspond to each other up and down, and the support assembly penetrates through the through holes of the upper die holder and the lower die holder which correspond to each other up and down.

4. The press riveting jig according to claim 1, further comprising a lower forming die, wherein a central hole is formed in the upper end surface of the lower forming die, the chamfered end of the shaft is installed in the central hole, and a cup is sleeved outside the upper end of the shaft.

5. The squeeze riveting jig according to claim 4, wherein the fit clearance between the lower forming die and the cup is less than 0.015mm, and the concentricity of the central hole of the lower forming die and the outer diameter of the cup is less than 0.01.

6. The squeeze riveting jig according to claim 4, wherein the outer diameter of the shaft and the inner diameter of the hole flanging of the cup are in interference fit, the fit tolerance between the outer diameter of the shaft and the inner diameter of the hole flanging of the cup is 0.02-0.03mm, the shaft and the central hole of the lower forming die are in clearance fit, and the fit tolerance between the shaft and the central hole of the lower forming die is less than 0.01 mm.

7. The clinch jig of claim 1, wherein the resilient member comprises a spring.

8. The squeeze riveting jig according to claim 1, wherein the support component is a cylinder adapted to a through hole formed in the upper die base and the lower die base.