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Stamping die for supporting pipe of windscreen wiper

A support tube and wiper technology, which is applied in the field of wiper support tube punching riveting die, can solve the problems of inconvenient maintenance and replacement of punches, reduced position accuracy of finished products, and high cost of die production, and achieves easy maintenance and replacement, and improves position accuracy. Molds make up simple effects

Active Publication Date: 2020-11-13
SICHUAN FUJI ELECTRIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to ensure the position accuracy after stamping connection, the joint needs to be positioned and clamped during stamping. The existing positioning methods are as follows: Figure 11 As shown, the joint is positioned and clamped by screw compression, and the screw needs to be disassembled every time a support tube is produced, so the production efficiency is low; and the operator puts his hand into the middle of the mold for a long time to disassemble and assemble There is a high risk in the operation; when the screw is rotated for compression, it is easy to drive the wiper joint to rotate together, which will change the position of the wiper joint and the pipe fittings, reducing the positional accuracy of the finished product
[0004] and if Figure 11 As shown, the main body of the existing stamping die is made of four pressing plates, the middle two pressing plates are used to install the clamping block, and the two outer pressing plates are used to install the punch, so that the punch passes through the clamping block and the middle The two plates of the support tube are connected by stamping. The position of the mold clamping block and the punch of this structure is fixed, which can only correspond to the production of a support tube of one structure, and the mold is large in size and heavy in weight, which is not easy to replace. The head is also inconvenient to maintain and replace, and the overall production cost of the mold is relatively high

Method used

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  • Stamping die for supporting pipe of windscreen wiper
  • Stamping die for supporting pipe of windscreen wiper
  • Stamping die for supporting pipe of windscreen wiper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1-11 As shown, a riveting die for a wiper support tube includes an upper template 11 , a lower template 12 , a clamping mechanism 20 and a stamping assembly 30 .

[0048] Concretely, the opposite surfaces of the upper template 11 and the lower template 12 are all processed with chute, the overall structure of the upper template 11 and the lower template 12 and the structure of the chute are all the same, the chute is a T-shaped groove structure, along the upper template 11 or the lower template The length direction of the template 12 is set, and the axis of the pipe fitting 4 is parallel to the chute when the wiper support pipe is placed;

[0049] Specifically, the clamping mechanism 20 is provided with a pair. The clamping mechanism 20 includes a fixed seat 21 and a pressing block 22. The fixed seat 21 is slidably arranged in the chute of the lower template 12. The fixed shaft 211 and the anti-rotation shaft 212, the commonly used wiper connector 1 are...

Embodiment 2

[0056] Here, the structure and working principle of the stamping assembly will be further described in conjunction with the accompanying drawings. The elastic element 34 is a pressure spring, and the joint surface of the component bottom plate 33 and the guide block 31 is processed with a spring seat hole 35, the elastic element 34 is arranged in the spring seat hole 35, and the bottom of the spring seat hole 35 of the guide block 31 is coaxially processed with threads The hole 313, the spring seat hole 35 of the component bottom plate 33 is coaxially processed with a counterbore 331, and the through-axis between the counterbore 331 and the spring seat hole 35 is processed with a bottom plate through hole 332, and the guide screw 36 passes through the counterbore 331 and the bottom plate in turn. The through hole 332 and the elastic element 34 are connected to the threaded hole 313. Only the part where the front end of the guide screw 36 cooperates with the threaded hole 313 is...

Embodiment 3

[0058] Such as Figure 4 As shown, the fixing base 21 includes a connecting plate 213, the connecting plate 213 is provided with a connecting block 214, the connecting block 241 can be designed as a rectangular structure or a cylindrical structure, the top surface of the connecting block 214 is used to support the wiper joint 1, and the fixed shaft 211 It is detachably arranged on the top of the connecting block 214, and the fixed shaft 211 is connected with the connecting block 241 through a threaded connection. In order to facilitate the rotation of the fixed shaft 211, a notch plane parallel to each other is processed on the peripheral side of the fixed shaft 211, which is convenient to use a wrench to rotate The shaft 211 is fixed.

[0059] The connecting block 214 is provided with a rectangular hole 2141 perpendicular to the direction of the fixed shaft 211. The rectangular hole 2141 is parallel to the chute of the lower template 12. A rectangular bar 215 is slid inside t...

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PUM

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Abstract

The invention discloses a stamping die for a supporting pipe of a windscreen wiper. Sliding grooves are processed in opposite surfaces of a lower die plate and an upper die plate. According to clamping mechanisms, fixed seats are arranged in the sliding grooves of the lower die plate in a sliding mode, the fixed seats are provided with fixed shafts and anti-rotation shafts which are perpendicularto the lower die plate, and the distances between the fixed shafts and the anti-rotation shafts are adjustable; and pressing blocks are arranged on the sliding grooves of the upper die plate in a sliding mode, projections of the pressing blocks along axes of the fixed shafts cover the fixed shafts, and the pressing blocks can move along the axes of the fixed shafts. A pair of stamping assemblies are arranged corresponding to the clamping mechanisms, the stamping assemblies comprise that semicircular holes are processed on bottom surfaces of guide blocks, a plurality of guide holes are processed perpendicular to the bottom surface, and the projections of the guide holes on the bottom surface of the guide blocks are positioned in a main semicircular holes; and stamping heads are arranged onassembly bottom plates, the stamping heads penetrate through the guide holes, elastic elements are arranged between the assembly bottom plates and the guide blocks, front ends of the stamping heads are inserted into the semicircular holes during tamping, and the front ends of the stamping heads are hidden in the guide holes during non-working state. The stamping die is simple in structure, high inclamping efficiency and precision, and can be used for punching and riveting of various supporting pipes.

Description

technical field [0001] The invention belongs to the field of wiper production, in particular to a punching and riveting die for a support tube of a wiper. Background technique [0002] Commonly used wiper support tubes are usually designed in two parts in order to reduce weight while taking into account structural features and strength, such as Figure 10 As shown, the middle part adopts thin-walled pipe fittings, and the two ends adopt casting joints with better molding strength, and then the pipe fittings and joints are connected by stamping. [0003] In order to ensure the position accuracy after stamping connection, the joint needs to be positioned and clamped during stamping. The existing positioning methods are as follows: Figure 11 As shown, the joint is positioned and clamped by screw compression, and the screw needs to be disassembled every time a support tube is produced, so the production efficiency is low; and the operator puts his hand into the middle of the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/00B21D37/10B21D43/00B21D53/88
CPCB21D39/00B21D37/10B21D43/003B21D53/88
Inventor 范成志张家海李发友刘锷瞿金强杨旭东
Owner SICHUAN FUJI ELECTRIC MOTOR