CN212822160U

CN212822160U - Prevent cold stamping forming mould of via hole skew

Info

Publication number: CN212822160U
Application number: CN202021574210.9U
Authority: CN
Inventors: 高小齐
Original assignee: Jiangsu Luoyuan Intelligent Equipment Co ltd
Current assignee: Jiangsu Luoyuan Industrial Technology Co.,Ltd.
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-30
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a cold stamping forming die capable of preventing via hole deviation, which can prevent via hole deviation and improve the product yield, and comprises a stamping device and a supporting device, wherein the stamping device comprises an upper splint, a fixed plate for fixing the upper splint and a punch head fixed at the bottom end of the upper splint, the supporting device comprises a base, a lower die corresponding to the upper splint and a lower die seat, the lower die is fixed with the base through the lower die seat, the cold stamping forming die further comprises a limiting device, the limiting device comprises a plurality of limiting columns, limiting grooves corresponding to the limiting columns, bending inserts, a plurality of inserts and limiting blocks, the limiting columns are fixed at the bottom end edge of the upper splint, the limiting grooves are arranged at the top end of the lower die, the bending inserts and the inserts are distributed at the top end of the lower die, the bending inserts are matched with parts, the bending inserts correspond to the punch head, the outer side of the limiting grooves is provided with the limiting blocks, the top end of the limiting block corresponds to the bottom end edge of the upper clamping plate.

Description

Prevent cold stamping forming mould of via hole skew

Technical Field

The utility model relates to a stamping forming mould technical field specifically is a prevent cold stamping forming mould of via hole skew.

Background

Press forming refers to a process of forming a work piece into a desired shape and size by applying pressure to a plate material by a press and a die to plastically deform or separate the plate material. The conventional common stamping forming mode comprises cold stamping, wherein stamping operation is mainly carried out at room temperature, and a common die is a cold stamping die which is special process equipment for processing materials into parts in cold stamping processing. Current cold stamping forming mould lacks stop device for in the mould punching process, the press stroke is unstable, can produce certain skew at punching press perforation in-process, leads to stamping forming's product yielding, and the size also has great error, has seriously influenced the promotion of product yields.

SUMMERY OF THE UTILITY MODEL

In the punching press perforation process to existence among the prior art, stamping forming mould can produce certain skew, leads to the problem that the product yields is low, the utility model provides a prevent cold stamping forming mould of via hole skew, it can prevent the via hole skew, improves the product yields.

A cold stamping forming die for preventing via hole deviation comprises a stamping device and a supporting device, wherein the stamping device comprises an upper clamping plate, a fixing plate for fixing the upper clamping plate and a punch head fixed at the bottom end of the upper clamping plate, the supporting device comprises a base, a lower die and a lower die seat, the lower die corresponds to the upper clamping plate, the lower die is fixed with the base through the lower die seat, the cold stamping forming die is characterized by further comprising a limiting device, the limiting device comprises a plurality of limiting columns, limiting grooves corresponding to the limiting columns, bending inserts, a plurality of inserts and limiting blocks, the limiting columns are fixed at the edge of the bottom end of the upper clamping plate, the limiting grooves are formed in the top end of the lower die, the bending inserts and the inserts are distributed at the top end of the lower die, the bending inserts and the inserts are matched with parts, the bending inserts correspond to the punch head, the limiting blocks are arranged on the outer side of the limiting grooves, the bottom of stopper with the lower mould is fixed, the top of stopper with the bottom edge of punch holder corresponds.

It is further characterized in that the method further comprises the steps of,

the middle part of the bottom end of the punch is provided with a material ejecting pin;

each limiting column is sleeved with a spring;

the insert and the bent insert are connected with the lower die through clearance fit and are fixed with the lower die through screws respectively, the number of the inserts is four, and the four inserts are distributed in a rectangular shape and correspond to the edges of the parts;

the number of the limiting columns is four, the four limiting columns are distributed in a rectangular shape, and the number of the limiting grooves is consistent with that of the limiting columns;

one end of the limiting column and one end of the punch respectively penetrate through the upper clamping plate and are fixed with the fixing plate;

the top end of the fixing plate is provided with a first threaded hole, and the limiting column and the punch are fixed in the first threaded hole through a first bolt;

the limiting blocks comprise at least two limiting blocks, the middle part of each limiting block is provided with a second threaded hole which penetrates through the middle part, the top end of the lower die is provided with a third threaded hole which corresponds to the second threaded hole, and the limiting blocks are fixed in the second threaded holes and the third threaded holes through second bolts;

the base is fixed with a lathe of the press machine through a third bolt.

Adopt the above structure of the utility model can reach following beneficial effect: the utility model can make the die more stable in the stamping process by matching the limiting post with the limiting hole; the bending insert and the insert limit the parts, so that the offset of the parts in the process of punching the via holes is effectively reduced, and the yield of products is improved; the upper clamping plate is limited by the limiting block, so that the stroke change of the press in the stamping process is reduced, the problem that the product is deformed or unqualified in size due to the stroke change of the press is avoided, and the product yield is further improved.

Drawings

FIG. 1 is a schematic sectional view of the main view of the present invention;

FIG. 2 is a front view of the mold opening of the present invention;

fig. 3 is a top view of the lower mold of the present invention.

Detailed Description

Referring to fig. 1 to 3, the cold stamping forming die for preventing via hole deviation comprises a stamping device, a supporting device and a limiting device, wherein the stamping device comprises an upper clamping plate 1, a fixing plate 2 for fixing the upper clamping plate 1 and a punch 3 which is fixed at the bottom end of the upper clamping plate 1 and is matched with a part in shape, one end of the punch 3 penetrates through the upper clamping plate 1 and is fixed with the fixing plate 2, the punch 3 is fixed in a first threaded hole of the fixing plate 2 through a first bolt 11, and a material ejecting pin 31 is arranged in the middle of the bottom end of the punch 3;

the supporting device comprises a base 3, a lower die 4 and a lower die seat 5, wherein the lower die 4 corresponds to the upper clamping plate 1, the lower die 4 is fixed with the base 3 through the lower die seat 5, and the base 3 is fixed with a lathe (not shown in the figure) of the press machine through a third bolt 13;

the limiting device comprises four limiting columns 6 which are distributed in a rectangular shape, four limiting grooves 7 corresponding to the limiting columns 6, a bending insert 8, four inserts 9 and two limiting blocks 10, wherein the limiting columns 6 penetrate through the upper clamping plate 1 and are fixed in first threaded holes of the fixing plate 2 through first bolts 11, each limiting column 6 is sleeved with a spring 61, and the limiting grooves 7 are arranged at the top ends of the lower dies 4;

the bending insert 8 is arranged in the middle of the top end of the lower die 4, the insert 9 is distributed around the bending insert 8, the bending insert 8 and the insert 9 are matched with a part 14, the bending insert 8 corresponds to the punch 3, the insert 9 and the bending insert 8 are connected with the lower die 4 through clearance fit and are fixed with the lower die 4 through screws, the insert 9 comprises four inserts 8, the four inserts 8 are distributed in a rectangular shape and correspond to the edges of the part, the heights of the bending insert 8 and the insert 9 in the lower die 4 are adjustable, the bending insert 8 and the insert 9 can be adjusted in the radial direction according to the bending requirement of the part to be processed, and the bending insert 8 and the insert 9 are fixed with the lower die base through screws after adjustment; the insert 9 and the bent insert 8 are connected with the lower die 4 through clearance fit, so that the insert 9 and the bent insert 8 can be effectively prevented from displacing in the stamping process, and the deviation of parts in the stamping process is further avoided;

stopper 10 includes two, and two stopper 10 distribute in the outside of spacing groove 7, and the bottom and the lower mould of stopper 10 are fixed, and the top of stopper 10 corresponds with the bottom edge of punch holder 1, and the second screw hole that has run through is opened respectively at the middle part of every stopper 10, and open on 4 tops of lower mould has the third screw hole that corresponds with the second screw hole, and stopper 10 is fixed in second screw hole, third screw hole through second bolt 12.

The specific working principle is as follows: the forming die is applied to a lathe of a press machine, a part 14 is placed in a lower die 4, the part 14 is positioned through a bending insert 8 and an insert 9, and the part 14 is bent under the action of the bending insert 8 and the insert 9 simultaneously in the process that a punch 3 downwards punches a through hole; when the punch 3 moves downwards under the driving action of the driving device, the limit of the punching device is realized through the matching of the limit column 10 and the limit groove 7, the spring is sleeved on the limit column 10 and is extruded and reset through the spring, so that the rapid reset of the die is facilitated, and the production efficiency of the die is improved; the upper pressure plate is further limited by the limiting block 10 in the stamping process, the stroke change of the press in the stamping process is reduced, the problem that the product is deformed or unqualified in size due to the stroke change of the press is avoided, and the product yield is further improved.

What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.

Claims

1. A cold stamping forming die for preventing via hole deviation comprises a stamping device and a supporting device, wherein the stamping device comprises an upper clamping plate, a fixing plate for fixing the upper clamping plate and a punch head fixed at the bottom end of the upper clamping plate, the supporting device comprises a base, a lower die and a lower die seat, the lower die corresponds to the upper clamping plate, the lower die is fixed with the base through the lower die seat, the cold stamping forming die is characterized by further comprising a limiting device, the limiting device comprises a plurality of limiting columns, limiting grooves corresponding to the limiting columns, bending inserts, a plurality of inserts and limiting blocks, the limiting columns are fixed at the edge of the bottom end of the upper clamping plate, the limiting grooves are formed in the top end of the lower die, the bending inserts and the inserts are distributed at the top end of the lower die, the bending inserts and the inserts are matched with parts, the bending inserts correspond to the punch head, the limiting blocks are arranged on the outer side of the limiting grooves, the bottom of stopper with the lower mould is fixed, the top of stopper with the bottom of punch holder corresponds.

2. The cold stamping forming die for preventing the via hole from shifting as claimed in claim 1, wherein: and the middle part of the bottom end of the punch is provided with a material ejecting pin.

3. The cold stamping forming die for preventing the via hole from shifting as claimed in claim 1, wherein: and each limiting column is sleeved with a spring.

4. The cold stamping forming die for preventing the via hole from shifting as claimed in claim 1, wherein: go into son, bend go into the son pass through clearance fit with the lower mould is connected to respectively through the screw with the lower mould is fixed, bend go into the son with the middle part of part corresponds, go into the son including four, four go into the son and be the rectangle distribution, and with the edge of part corresponds.

5. The cold stamping forming die for preventing the via hole from shifting as claimed in claim 1, wherein: the limiting columns comprise four limiting columns which are distributed in a rectangular mode, and the number of the limiting grooves is consistent with that of the limiting columns.