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Vacuum suction unit

A vacuum suction and vacuum technology, applied in the direction of electrical components, electrical components, conveyor objects, etc., can solve the problems of increased negative pressure of the suction device, etc., and achieve the effect of stable vacuum fixed judgment and reliable vacuum fixed judgment

Inactive Publication Date: 2009-07-29
KOGANEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This judgment method utilizes the phenomenon that if the workpiece is vacuum-fixed to the suction port of the suction device, no outside air will be sucked in from the suction port, thereby increasing the negative pressure in the suction device

Method used

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  • Vacuum suction unit
  • Vacuum suction unit
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Examples

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Embodiment Construction

[0018] Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

[0019] Figure 1A and 1B is a circuit diagram showing an air pressure circuit of a vacuum suction unit according to an embodiment of the present invention, wherein, Figure 1A shows the switching position in the case of vacuum supply, while Figure 1B The switching position is shown in a vacuum cut-off situation. As shown in FIG. 1, the vacuum suction unit 10 is connected with a vacuum supply source 11 having a vacuum pump as a vacuum generating source and a positive pressure supply source 12 having a compression pump as a positive pressure generating source, and the vacuum suction unit 10 has a Attachment / detachment flow path 14 to which a suction device 13 such as a vacuum pad is connected. By supplying negative-pressure gas from the vacuum supply source 11 to the attaching / detaching flow passage 14 , the workpiece W is vacuum-adsorb...

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PUM

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Abstract

A removable channel (14) is connected with a sucker (13) for vacuum sucking a work (W). Negative pressure air is supplied from a vacuum supply source (11) to the removable channel (14) through a vacuum supply control valve (15). The vacuum supply control valve (15) is switched between a suction position for supplying negative pressure air to the removable channel (14) and a rest position for stopping negative pressure air supply. The removable channel (14) is connected with a flow sensor (29) for detecting air flow in the removable channel (14). A decision is made that the work (W) is sucked if the detection value of the flow sensor (29) is not higher than a specified criterion.

Description

technical field [0001] The invention relates to a vacuum suction unit provided with a suction device capable of vacuum fixing a workpiece. Background technique [0002] When mounting workpieces such as ICs or LSIs on inspection boards or mounting workpieces that have been inspected on printed circuit boards, conveying devices for conveying workpieces to be set in trays or the like are used. [0003] Among the conveying devices described above, there is a device in which a suction device capable of moving in the Z direction is attached to a transfer head capable of moving in the X and Y directions, and the workpiece is fixed to the suction device under vacuum. The case is transported to the predetermined location. Among the suction devices described above, there is a device capable of supplying a negative pressure in the device and vacuum-fixing a workpiece by a pressure difference between atmospheric pressure and the negative pressure. The opening portion of the airflow pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J15/06H01L21/68H05K13/02H05K13/08B65G47/91H01L21/677H01L21/683H05K13/04
CPCB65G47/917H05K13/0408H01L21/6838H05K13/0409
Inventor 藤原辉彦
Owner KOGANEI