DE19934618A1 - Stacker for press for forming of motor vehicle body parts has two conveyor belts positioned in a V-shaped, with associated stacking robots and turntables for stacking containers - Google Patents

Abstract

The stacker incorporates height and position-adjustable conveyor belts, with stacking stations and associated stacking robots. Two conveyor belts (4,5) are positioned in a V-shape at a relative angle of 70-110 deg , and begin at the press. Stacking robots (8,9) with component-adjusted suction tools are located between the conveyor belts. Each robot has an associated turntable (14) for two stacking containers (12,13). Each belt has one or more stacking sites (6,7), each with a robot on the inside, and there may be alternative manual stacking sites on the outside of the belts.

Description

The invention relates to a stacking system for presses Sheet metal forming, especially for stacking body parts for motor vehicles or other large sheet metal parts, with the Press starting position and height adjustable conveyor belts, which are driven in the work cycle of the press and with the stacking stations arranged and assigned to the conveyor belts stacking robots and centering stations according to patent applications Exercise 198 26 270.1.

By solving the main patent application, a stack became created that is universal for a large number of Use workpieces and technological manufacturing processes bar and the empty stacking container in automatic mode provides and removed full stacking container. For the Manufacturing the stacking system is an economic effort required.

Due to the parallel arranged conveyor belts and the Longitudinal exchange places for the empty and filled stacking container becomes proportionate in the longitudinal direction requires a lot of space that is not always available.

It is an object of the invention to solve the main patent applications to improve 198 26 270.1 so that the Platzbe may be significantly reduced in the longitudinal direction.

The object is achieved by the features of Claim 1 solved. Describe the subclaims Embodiments of the invention, which is an advantageous adaptation allow for different spatial conditions.

Due to the V-shaped arrangement of the two conveyor belts which is included by an appropriate choice of the Angle possible, the space requirement from the longitudinal direction in the Width to lay. This creates better adaptability  to the spatial conditions. The V-shaped arrangement continues to create space to rotate the stacking robot tables between the two conveyor belts. This means that there is no need to extend the conveyor belts for Manual stacking places. These can now be found on the outside of the Conveyor belts can be arranged. Instead of the turntables are at certain space conditions advantageous two-day linear Stacking container feed lines can be used.

In the drawing, the invention is in one embodiment game explained.

The drawing shows a schematic floor plan of the stack investment.

Between side stands of a large-capacity press, not shown, a tray 1 is arranged, on which the finished pressed parts are placed. On both sides of the tray 1 , an industrial robot 2 is set up, on the hands of which workpiece-adapted suction spiders are easily exchangeably attached. The swivel circles 3 of the industrial robots 2 cover the tray 1 and the initial areas of two conveyor belts 4 ; 5 .

These two conveyor belts 4 ; 5 are arranged in a V-shape with respect to one another and form an angle of preferably 90 degrees. Your front pulleys are located in the immediate vicinity of the tray 1 . Both conveyor belts 4 ; 5 are driven in the longitudinal direction by means of an NC drive in the work cycle of the large capacity stage press. On each conveyor belt 4 ; 5 are two stacking stations 6 one after the other; 7 arranged. There are under the conveyor belt 4 ; 5 each a centering station for the pressed parts to be removed. Each stacking station 6 ; 7 is a stacking robot 8 ; 9 assigned, on the hand a workpiece-adapted suction spider is quickly replaceable attached. The swing circle 10 ; 11 of the stacking robot 8 ; 9 covers the stacking station 6 ; 7 on the conveyor belt 4 ; 5 and a front stack container 12 , which is parked together with a rear stack container 13 on a turntable 14 . The turntable 14 is such between the conveyor belts 4 ; 5 and the second stacking station 7 arranged that the rear stacking container 13 removed by a stacking vehicle and then an empty stacking container 13 can be placed on the turntable 14 . After the second stacking station 7 , the conveyor belt 4 ; 5 extended a little to be able to discharge faulty pressed parts there.

On the outside of the conveyor belts 4 ; 5 are in the area of the stacking stations 6 ; 7 stacking container 15 set up, in the event of need of the conveyor belts 4 ; 5 pressed parts can be stacked by hand. In the center between the conveyor belts 4 ; 5 , a number of switch cabinets 16 are set up, which, among other things, accommodate the robot controls and the controls for the NC drives.

Depending on the existing spatial conditions at the site, the spatial need can be changed by changing the included angle between the conveyor belts 4 ; 5 vary in the course of project planning. Although all angles up to 180 degrees can be realized, an angle range of 70 to 110 degrees has proven to be advantageous in practice.

Furthermore, the stacking container 12 ; 13 to the turntable 14 an unillustrated two-day linear stacking container feed path an alternative that can be used in accordance with the existing company transport organization.

According to the required stacking capacity, the stack system with two or more stacking places 6 ; 7 executable.

The stacking system works as follows:

The embodiment is based on two unequal pressed parts from being made at the same time and placed on the shelf become.

Alternately, the two industrial robots 2 take a press part and place it on the conveyor belt 4 assigned to them; 5 from. This promotes the pressing parts lying on it in alternation to the first or second stacking place 6 in the work cycle of the step press; 7 . There the respective centering station lifts the pressed part, the stacking robot 8 ; 9 detects the pressed part with the suction spider, lifts it from the centering station and pivots it over the stacking container 12 . There he places it in the desired position. After filling the front stacking container 12 , the turntable 14 is rotated by 180 degrees, so that an empty stacking container 13 is brought into the front position. The filled stacking container 12 is exchanged for an empty stacking container 13 by means of a forklift in the rear position of the turntable 14 .

The removal of faulty pressed parts and manual stacking take place in the same way as in the main patent application already described.  

List of reference numbers

1

Filing

2nd

Industrial robots

3rd

Swing circle

4th

Conveyor belt

5

Conveyor belt

6

Stacking station

7

Stacking station

8th

Stacking robot

9

Stacking robot

10th

Swing circle

11

Swing circle

12th

front stacking bin

13

rear stacking container

14

Turntable

15

Stacking container

16

Control cabinets

Claims (6)

1. Stacking system for presses for sheet metal forming, in particular for stacking body parts for motor vehicles or other large sheet metal parts; with position and height-adjustable conveyor belts beginning at the press, which are driven in the work cycle of the press and with stacking stations and assigned stacking robots arranged on the conveyor belts and centering stations according to patent application 19826270.1, characterized by the following features:

• - two conveyor belts ( 4 ; 5 ) which are arranged in a V-shape with respect to one another and start at the press,
• - spin between the conveyor belts ( 4 ; 5 ) on these stacking robots ( 8 ; 9 ) with workpiece-adapted suction cups,
• - Each stacking robot ( 8 ; 9 ) assigned rotary table ( 14 ) for two stacking containers ( 12 ; 13 ).

2. Stacking plant according to claim 1, characterized in that the two conveyor belts ( 4 ; 5 ) are arranged in a U-shape at an angle of 70 to 110 degrees to each other. 3. Stacking system according to claims 1 and 2, characterized in that one or more stacking stations ( 6 ; 7 ) are present on each conveyor belt ( 4 ; 5 ) and for each stacking station ( 6 ; 7 ) on the inside of the conveyor belts ( 4 ; 5 ) a stacking robot ( 8 ; 9 ) with a turntable ( 14 ) for two stacking containers ( 13 ; 14 ) is assigned. 4. Stacking system according to claims 1 to 3, characterized in that on the outside of each conveyor belt ( 4 ; 5 ) alternative hand stacking stations are arranged. 5. Stacking system according to claims 1 to 4, characterized in that a discharge point is provided at the free end of each conveyor belt ( 4 ; 5 ). 6. Stacking system according to claims 1 to 3, characterized in that two-day linear stack container feed paths are assigned in place of the rotary tables ( 14 ).