CN108296357B

CN108296357B - Continuous die

Info

Publication number: CN108296357B
Application number: CN201810074282.8A
Authority: CN
Inventors: 赵现枫; 李玉乾
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2018-01-25
Filing date: 2018-01-25
Publication date: 2020-03-06
Anticipated expiration: 2038-01-25
Also published as: CN108296357A

Abstract

The invention relates to the technical field of dies, and aims to provide a continuous die which can prevent a material belt from becoming soft and being incapable of being straightened, can accurately and smoothly feed and straighten the material belt and has a simple structure. The continuous die comprises an upper die, a lower die and a material belt guide structure, wherein a material belt is arranged on the lower die, and reinforcing ribs are arranged on two sides of the material belt; the material belt guide structure comprises a guide groove and a guide pin, the guide groove is arranged on the reinforcing rib, the guide pin is fixedly arranged on each station of the lower die and matched with the guide groove to guide the movement of the material belt.

Description

Continuous die

Technical Field

The invention relates to the technical field of molds, in particular to a continuous mold.

Background

At present, structural components such as an air conditioner partition plate, a motor bracket, a right side plate and the like are produced by using a progressive die so as to improve the production efficiency and reduce the processing cost. The progressive die is different from a process die, a common process die needs a plurality of punching machines to process according to steps, each punching machine needs to be manually responsible, and semi-finished products finished in the previous process need to be transferred. After the continuous die scheme is used, all working procedures can be processed on a single large-tonnage device, meanwhile, the continuous production of sheet metal parts can be realized by using an automatic punching machine, and the production efficiency is improved by tens of times. In the modulus of continuity production process, when artifical or automatic conveying material area, because large-scale modulus of continuity generally more than 3m, the initial position pay-off has little error, is enlargied when later process is processed, leads to material area and spacing post to interfere and appears the card material problem, even do not have the card material also can be because leading just bad messenger processingquality is bad, appear reporting the waste product even, influenced production efficiency and caused unnecessary loss. How to solve the problems of guiding and feeding of the large-scale progressive die is a key problem of promoting continuous production of large-scale sheet metal parts and improving production efficiency.

Disclosure of Invention

Based on the above, the technical problem to be solved by the invention is to provide a continuous die which can prevent a material belt from becoming soft and being incapable of guiding, is accurate in feeding and guiding, is smooth in feeding and has a simple structure.

A continuous die comprises an upper die, a lower die and a material belt guide structure, wherein a material belt is arranged on the lower die, and reinforcing ribs are arranged on two sides of the material belt; the material belt guide structure comprises a guide groove and a guide pin, the guide groove is arranged on the reinforcing rib, the guide pin is fixedly arranged on each station of the lower die and matched with the guide groove to guide the movement of the material belt.

In one embodiment, the continuous die further comprises a positioning structure, wherein the positioning structure comprises a plurality of positioning holes formed in the material belt and positioning columns arranged on each station of the lower die, and the positioning columns can be ejected out to be matched and fixed with the positioning holes so as to position each step of the continuous die.

In one embodiment, the positioning holes are arranged at the connecting positions of the two steps of the material belt and are close to the inner sides of the reinforcing ribs on the two sides; the material belt close to the inner side of the positioning hole is provided with a T-shaped process hole.

In one embodiment, the pilot pin is arranged at the joint of the two-step process on the lower die.

In one embodiment, the lower die is further provided with a guide stop block for initially guiding the material belt to limit the initial position of the material belt.

In one embodiment, a floating stop block is fixedly arranged on the lower die.

In one embodiment, the aperture of the locating hole is >1.5 mm.

In one embodiment, the progressive die includes a rebar punch for stamping the rebar into the rebar, the rebar punch located at a first process location of the progressive die; the groove formed by stamping the reinforcing rib is the guide groove.

In the continuous die, the reinforcing ribs are added on the material belt, the guide grooves are formed in the reinforcing ribs 310, so that the material belt can move forwards under the limitation of the guide pins, and the guide pins are arranged at each step, so that the material belt is prevented from deviating; meanwhile, reinforcing ribs are added on the two sides of the material belt, so that the strength of the material belt is guaranteed, the reinforcing ribs are added to prevent the material belt from becoming soft, and feeding is smoother; the material belt guide structure is matched with the reinforcing ribs, so that the feeding guide accuracy of the continuous die is guaranteed, the feeding is smooth, the forming quality is high, and the requirement of continuous production is met.

Drawings

FIG. 1 is a schematic view of a continuous mold according to the present invention;

FIG. 2 is a process diagram for the production of a continuous mold according to the present invention;

FIG. 3 is an enlarged view taken at I in FIG. 2;

description of reference numerals:

an upper die 100; a fixing plate 110; an upper stripper plate 120;

a lower die 200; a lower die plate 210; a lower pad 220; a positive guide stopper 230; a rising stopper 240;

a strip of material 300; a reinforcing rib 310;

a pilot pin 410; a pilot groove 420;

positioning holes 500;

t-shaped process holes 600.

Detailed Description

Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings, but which can be embodied in many different forms and varied in the manner defined and covered by the claims.

Referring to fig. 1, a continuous mold in one embodiment of the present invention includes an upper mold 100, a lower mold 200, and a strip guide structure. The tape 300 is disposed on the lower mold 200. The upper mold 100 includes a fixing plate 110 and an upper stripper plate 120, and the lower mold 200 includes a lower mold plate 210 and a lower bolster plate 220. As shown in fig. 2 and 3, the strip 300 has reinforcing ribs 310 at the edge width and the connecting portion. The material belt guiding structure comprises a guiding groove 420 and a guiding pin 410, wherein the guiding groove 420 is arranged on the reinforcing rib 310, and the guiding pin 410 is fixedly arranged on each station of the lower die 200. The guide pin 410 is inserted into the guide groove 420, and is matched with the guide groove 420 to guide and limit the movement of the material tape 300.

In the continuous mold, the reinforcing ribs 310 are added on the strip 300, and the guide grooves 420 are arranged at the reinforcing ribs 310, so that the strip 300 moves forward under the limitation of the guide pins 410, and each step is provided with the guide pins 410, thereby ensuring that the strip 300 does not deviate; meanwhile, reinforcing ribs 310 are added on two sides of the material belt 300, the reinforcing ribs 310 ensure the strength of the material belt 300, and the reinforcing ribs 310 are added to prevent the material belt 300 from becoming soft, so that feeding is smoother; the material belt guide structure is matched with the reinforcing ribs 310, so that accurate feeding guide of the continuous die is guaranteed, feeding is smooth, forming quality is high, and the requirement of continuous production is met.

The progressive die generally has errors due to the feeding distance of the feeding machine, and accumulated errors are generated after the progressive die is rapidly punched for multiple times. Therefore, the continuous die is further provided with a positioning structure, the positioning structure comprises a plurality of positioning holes 500 arranged on the material belt 300 and positioning columns (not shown) arranged on each station of the lower die 200, the positioning columns can be ejected out to be matched and fixed with the positioning holes 500, each step of the continuous die is positioned, and the accuracy of the feeding distance is corrected. The positioning holes 500 are disposed on both sides of the material belt 300, and if there are available round holes on the punched product as the positioning holes 500, the holes on the punched product can also be used as the positioning holes 500. The error correction of the feeding distance is carried out during feeding every time, so that the feeding accumulated error is avoided, and the aim of accurate feeding is fulfilled. The positioning hole 500 is preferably a circular hole, and the diameter of the positioning hole 500 is determined according to the feeding distance and the width of the material tape 300. In the present embodiment, the aperture of the positioning hole 500 is preferably set to be a multiple of 0.5mm and larger than 1.5 mm. The auxiliary positioning holes 500 may be provided according to the requirement of the post-manufacturing.

Specifically, the positioning hole 500 is disposed at the joint of the two steps on the material tape 300, and is disposed near the inner sides of the two side reinforcing ribs 310; the material belt 300 close to the inner side of the positioning hole 500 is provided with a T-shaped fabrication hole 600. The positioning hole 500 of the material tape 300 is located at the outer side of the T-shaped process hole 600, and the arrangement of the T-shaped process hole 600 protects the positioning hole 500 at the outer side from deforming in the stamping process, so that the positioning column of the lower template 210 in each process can be accurately aligned with the material tape 300.

Specifically, the pilot pin 410 is provided at the junction of the two-step process on the lower die 200.

Further, the lower mold 200 is further provided with a guide stopper 230 for initially guiding the tape 300 to define an initial position of the tape 300. The side portion of the positive stop 230 is used for horizontal direction guiding.

Further, a floating stop 240 is fixedly disposed on the lower mold 200 for demolding.

Specifically, the progressive die includes a rebar 310 punch for punching the rebar 310, the rebar 310 punch being located at a first process location of the progressive die. In this embodiment, when the strip 300 is in the first process position, the ribs 310 are formed by stamping, and the grooves formed by stamping the ribs 310 become the pilot grooves. In other embodiments, the strip of material 300 may also be formed with the ribs 310 and the guide grooves 420 on other molds in advance.

The following description will be given of the production steps by taking a continuous mold for producing structural members of air conditioners as an example.

As shown in fig. 2, the whole process flow of the continuous mold is divided into 8 steps in total:

s1, tearing, namely stamping a positioning hole 500 and reinforcing ribs 310 for reinforcing the strength of the material belt 300, wherein the reinforcing ribs 310 are reinforcing ribs;

s2, tearing and trimming: stamping the outline of the workpiece, and forming the outline of the workpiece;

s3, drawing the convex hull: stamping a plurality of convex hulls of a workpiece;

s4, trimming: further stamping the features of the article to remove excess dimensions of the strip 300;

s5, trimming and sprouting: further stamping the features of the workpiece, removing the redundant size of the material belt 300, and punching the feature circular holes of the workpiece;

s6, folding upwards: bending the workpiece;

s7, flattening and folding downwards: bending the workpiece;

s8, forming and discharging: and finally, carrying out local characteristic processing on the workpiece.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A continuous die is characterized by comprising an upper die, a lower die and a material belt guide structure, wherein a material belt is arranged on the lower die, and continuous reinforcing ribs are arranged on the edges of two sides of the material belt and the part for connecting the material belt; the material belt guide structure comprises a guide groove and a guide pin, the guide groove is arranged on the reinforcing rib, the guide pin is fixedly arranged on each station of the lower die and matched with the guide groove to guide the movement of the material belt.

2. The progressive die of claim 1 further comprising a positioning structure, wherein the positioning structure comprises a plurality of positioning holes disposed on the material belt and positioning posts disposed on each station of the lower die, and the positioning posts can be ejected to be matched and fixed with the positioning holes to position each process of the progressive die.

3. The continuous die of claim 2, wherein the positioning holes are formed at the connection of the two steps of the material belt and are arranged close to the inner sides of the reinforcing ribs on the two sides; the material belt close to the inner side of the positioning hole is provided with a T-shaped process hole.

4. The progressive die of claim 1 wherein the pilot pin is disposed on the lower die at the junction of the two-step process.

5. The continuous mold of claim 1, wherein the lower mold further comprises a guide stop for initially guiding the strip of material to define an initial position of the strip of material.

6. The continuous mold of claim 1, wherein a lift stop is further fixedly disposed on the lower mold.

7. Continuous die according to claim 2 or 3, characterised in that the aperture of the pilot holes is >1.5 mm.

8. The progressive die of claim 1 including a reinforcement bar punch for stamping to form the reinforcement bar, the reinforcement bar punch being located at a first process position of the progressive die; the groove formed by stamping the reinforcing rib is the guide groove.