CN114682680B

CN114682680B - Stamping die changing method

Info

Publication number: CN114682680B
Application number: CN202210229754.9A
Authority: CN
Inventors: 李承璋; 查向阳; 赵雷; 唐小龙
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2024-06-04
Anticipated expiration: 2042-03-10
Also published as: CN114682680A

Abstract

The invention discloses a stamping die changing method, which comprises two first lifting travelling cranes and second lifting travelling cranes which are arranged in parallel, and a multi-working-station workbench, wherein the multi-working-station workbench is arranged on a plurality of tracks and is divided into a left-side workbench and a right-side workbench; the method also comprises an outer die changing procedure, wherein the first crane carries out outer die changing on the workbench at the left side interval every time, the second crane carries out outer die changing on the workbench at the right side interval every time, the first crane and the second crane act on different rails to change the die at the same time; and after the die replacement of all the work tables on the left side and the right side is completed, uniformly carrying out inner die replacement. The invention can reduce single batch production, stock quantity and stock funds; the investment of vehicle-type station appliances is saved, and the occupation of stamping part warehouse sites is reduced.

Description

Stamping die changing method

Technical Field

The invention relates to the technical field of single-batch small-batch production of automobile stamping, in particular to a stamping die changing method.

Background

At present, parts produced in a stamping workshop of an automobile main machine factory are generally large-scale covering parts and large-scale structural parts, and are produced by a five-order large-scale stamping automation line. The traditional stamping external die changing process design has the advantages that the external die changing of the five-sequence die is completed by sequentially lifting five times on the same crane, the external die changing time is generally about 65 minutes, the stamping line is required to continuously produce for about 65 minutes on the premise of not wasting the productivity, and the single batch production is large. For example: the production takt of the high-speed automatic stamping line is calculated according to 13.5SPM, the continuous production is carried out for 65 minutes, the single batch production quantity is about 878 pieces, the larger the single batch production quantity is, the larger the stock quantity is, and the stock fund occupation is large.

On the premise of not wasting productivity, the time of external die change determines the continuous production time of the stamping line and determines the production quantity of single batch. The industry continuously researches an external die changing mode, shortens the external die changing time and realizes a small-batch production mode. The novel stamping external die change process design well solves the problems.

Disclosure of Invention

The invention aims to provide a stamping die changing method.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

A stamping die change method comprises two first crane cranes and second crane cranes which are arranged in parallel, and a multi-working-station workbench which is arranged on a plurality of tracks and is divided into a left-side workbench and a right-side workbench;

The method also comprises an outer die changing procedure, wherein the first crane carries out outer die changing on the workbench at the left side interval every time, the second crane carries out outer die changing on the workbench at the right side interval every time, the first crane and the second crane act on different rails to change the die at the same time;

and after the die replacement of all the work tables on the left side and the right side is completed, uniformly carrying out inner die replacement.

Preferably, the device comprises a stamping factory building, wherein the stamping factory building is of a two-span structure and comprises a first span and a second span, and lifting cranes are arranged on the first span and the second span;

The arrangement of the rails extends from the first bay into the second bay for the work table adjacent the second bay to open to the second bay for die change.

Preferably, the spacing between the two columns crossing the boundary of the factory building is a single-time press spacing or a double-time press spacing.

Preferably, the multi-working-stage is a five-working-stage or a four-working-stage.

Preferably, the front sections of the first and second spans each store a mold.

Preferably, the second span encloses the area outside the track and stores the mould.

Preferably, the outer die changing process comprises the steps that two crane cranes change dies simultaneously, wherein the first crane is used for changing dies of the left-side No.1, no. 3 and No. 5 working tables, the second crane is used for changing dies of the right-side No. 2 and No. 4 working tables, and the outer crane cranes reciprocate in a crossed mode until all the working tables are used for outer die changing.

The beneficial effects are that: the invention mainly shortens the external die changing time of the stamping line, thereby shortening the mass production time, reducing the mass production quantity and bringing the following advantages:

1. The single batch production is reduced, the stock quantity is reduced, and the stock funds are reduced;

2. The investment of vehicle-type station appliances is saved, and the occupation of stamping part warehouse sites is reduced.

Drawings

Fig. 1 is an overall construction diagram of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

A stamping die change method is disclosed, the overall plant layout is shown in FIG. 1, the stamping plant is of a two-span structure and comprises a first span and a second span, and the dies are placed at the front end positions of the two spans. The first span and the second span are provided with lifting cranes, in particular a first lifting crane 5 and a second lifting crane 3;

And a multi-process table 2, the multi-process table 2 being mounted on a plurality of rails, the tables being divided into a left-side table and a right-side table, as shown in the drawing with reference to the figure, the multi-process table being exemplified by five-process tables.

The table is mounted on rails which are arranged to extend from the first bay into the second bay, as shown with reference to the figures, in order to allow the left table to enter the second bay via the rails for a mould change operation by the first crane 5. The factory building column spacing is designed to avoid that the workbench is opened to another span, and the distance between adjacent columns 4 in the region of the workbench is a single-time distance between presses or a double-time distance between presses.

Referring to the drawings, five-sequence tables are numbered, namely, left side 1-5 tables and right side 1-5 tables.

In particular, when the outer die change is implemented, two crane cranes change the dies simultaneously, and the workbench on the left side and the workbench on the right side are opened in a crossing way.

The method comprises the following steps: the left side 1,3, 5 work tables are opened to the second cross die changing station along the rails, the right side 2, 4 work tables are opened to the first cross right die changing station, and at the moment, the left side 2, 4 work tables and the right side 1,3, 5 work tables are kept in production in the stamping line. And then the first crane 5 carries out die change on the left-side tables 1,3 and 5, and the second crane 3 carries out die change on the right-side tables 2 and 4. After the first die change is completed, the left and right work tables are switched out again to change the dies, and after the outer die change is completed on all the work tables on the left and right sides, the inner die change is uniformly performed. In the concrete implementation, compared with the traditional process design, the outer die change (the die of the 1 stamping line is sequentially changed for 5 times in a way of hoisting by a crane), the 5-order outer die change time is saved by 40%, the 4-order outer die change time is saved by 50%, the production time can be shortened by 40% -50%, and the production batch is greatly reduced.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The stamping die-changing method is characterized by comprising two first lifting travelling cranes and second lifting travelling cranes which are arranged in parallel, and a multi-working-station workbench which is arranged on a plurality of tracks and is divided into a left-side workbench and a right-side workbench, namely a left-side workbench 1-5 and a right-side workbench 1-5;

the device comprises a stamping factory building, wherein the stamping factory building is of a two-span structure and comprises a first span and a second span, and lifting cranes are arranged on the first span and the second span;

The arrangement of the rails extends into the second span from the first span so as to enable a workbench close to the second span to be opened to the second span for die changing;

The method also comprises an outer die changing process, wherein the first crane carries out outer die changing on the left workbench at intervals every time, the second crane carries out outer die changing on the right workbench at intervals every time, the first crane and the second crane act on different rails to change the die at the same time;

The method comprises the steps that a No.1, a No. 3 and a No. 5 workbench of a left workbench are opened to a die changing station of a second span along a track, a No. 2 and a No. 4 workbench of a right workbench are opened to a right die changing station of a first span, at this time, the No. 2 and the No. 4 workbench of the left workbench and the No.1, the No. 3 and the No. 5 workbench of the right workbench are kept in production in a stamping line, then a first crane is used for die changing the No.1, the No. 3 and the No. 5 workbench of the left workbench, a second crane is used for die changing the No. 2 and the No. 4 workbench of the right workbench, after the first die changing is completed, the left and the right workbench is switched out again to be subjected to die changing, and after all the workbench at the left and the right sides are subjected to outer die changing, inner die changing is unified;

the front sections of the first span and the second span are respectively stored with a die, and the second span is surrounded by a region outside the track and is stored with a die.

2. The method of claim 1, wherein the spacing between the columns of the stamping plant across the boundary is a single press spacing or a double press spacing.