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Method for handling and transporting workpieces

A workpiece and movement technology, applied in the field of equipment that implements the method, can solve problems such as inaccurate grasping, production interruption, inaccurate workpieces, etc., achieve the effects of low cost, improved product quality, and guaranteed functionality

Active Publication Date: 2013-07-17
WITTMANN TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with older injection molding machines is that the opening stroke (?ffnungshub) is not implemented without tolerance, which makes it difficult to grasp the workpiece with a clamp
Inaccurate gripping of workpieces can lead to production defects or production interruptions
Inaccurate gripping when handling injection molded parts via suction nozzles, for example when unloading buffer stacks, also leads to disturbances in the production process

Method used

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  • Method for handling and transporting workpieces
  • Method for handling and transporting workpieces

Examples

Experimental program
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Embodiment Construction

[0021] FIG. 1 shows an injection molding machine 1 with open mold halves 2 , 3 . The robot 4 moves into the opened mold halves 2 , 3 for removal of the workpiece 5 . Position A of the robot 4 is entry into the open mould.

[0022] In position B, the robot 4 is in the region of the workpiece 5 .

[0023] The robot 4 is moved by means of a drive which can be loaded via a programmable control and regulation unit. The robot 4 is provided with grippers 6 and has a suction nozzle 7 with an air line. A pressure gauge 8 is arranged in the air line of the suction nozzle.

[0024] The suction nozzle 7 is activated when it approaches the workpiece 5 . The negative pressure -p increases as the suction nozzle 7 gets closer to the workpiece. The negative pressure -p is measured continuously, ie constantly, and the forward movement of the robot 4 is stopped, preferably during braking, when an adjustable or defined threshold value for the negative pressure -p is reached. If the suction ...

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Abstract

The invention relates to a method for handling and transporting workpieces (5), in particular for removing injection-moulded articles from an injection-moulding machine. Handling is carried out with a handling machine (4) which has a programmable control and regulating unit and at least one suction nozzle (7). In order to grasp or suck up the workpiece (5), use is made of a negative pressure (-p) generated via the suction nozzle (7) arranged on the handling machine (4), if appropriate via a gripper (6). When the suction nozzle (7) approaches the workpiece (5), the suction nozzle (7) is activated. The negative pressure (-p) is measured continuously or permanently. When a settable or determined threshold value of the negative pressure (-p) is reached, the forward movement of the handling machine (4) is stopped, preferably by a braking operation. The workpiece (5) is sucked up carefully and precisely by the suction nozzle (7).

Description

technical field [0001] The invention relates to a method with a robot with a programmable control and regulation unit and at least one suction nozzle for transfer or for handling and transporting workpieces, in particular for removing injection moldings from an injection molding machine, In this case, a negative pressure generated by a suction nozzle arranged on the robot, possibly via a gripper, is used for gripping or suctioning the workpiece. Furthermore, the invention also relates to a device for carrying out the method. Background technique [0002] The problems that arise when removing workpieces from injection molds have been frequently mentioned. It is therefore known from EP 0 729 405 B1 to remove the disc from the injection mold by means of negative pressure. In this publication document the main focus is on reducing the processing time, wherein a reduction in mass and a shortening of the path for the robot arm is aimed at. [0003] Furthermore, a control device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/42B25J15/06B65G47/91B29C45/76
CPCB29C2945/76598B29C2945/76795B65G47/917B29C45/7626B29C2945/76946B29C2945/76334B29C2945/76006B29C2945/76899B29C2945/76421B29C45/4225B29C2945/76575B25J15/0616
Inventor E.班纳克J.普莱耶J.雷拉
Owner WITTMANN TECH GMBH