Component pickup rate calculating system for a component mounter

Patent metadata

Field	Value
Publication number	US-10667446-B2
Application number	US-201515564012-A
Country	US
Kind code	B2
Filing date	Apr 8, 2015
Priority date	Apr 8, 2015
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

A production management computer totals the data of the component pickup operation quantity of the suction nozzle and the pickup error quantity sent from control device of each component mounter for each type of component, and calculates the ratio of the pickup quantity or the ratio of the pickup error quantity with respect to the component pickup operation quantity of the suction nozzle for each type of component as a component pickup rate. Here, production management computer separately calculates an after-feeder-setting component pickup rate, a main component pickup rate, a near-tape-trailing-end component pickup rate, and an after-splicing component pickup rate as component pickup rates for each type of component.

First claim

The invention claimed is:

1. A component pickup rate calculating system for a component mounter that picks up components supplied by a tape feeder and mounts the components on a circuit board, the system comprising:
a control device comprising:
a first counter configured to count a component pickup operation quantity of a suction nozzle during operation of the component mounter, and
a second counter configured to count a pickup error rate representing cases in which the suction nozzle could not pick up the component, or a pickup rate representing cases in which the suction nozzle could pick up a component; and
a production management computer configured to calculate a ratio of the pickup rate or a ratio of the pickup error rate with respect to the component pickup operation quantity of the suction nozzle as a component pickup rate based on a count value of the first control device and a count value of the second control device, wherein
the production management computer is configured to:
calculate separate component pickup rates, the separate component pickup rates being a component pickup rate for a region until a specified quantity of component pickup operations immediately after the tape feeder is set on the component mounter or a region until a feeding length of component supply tape set on the tape feeder is a specified length as an after-feeder setting component pickup rate, and a component pickup rate after the region has passed as a main component pickup rate, and
determine when one of the component pickup rates reaches a notification or warning level, the production management computer displaying a list of component pickup rates with the notification or warning when the level is reached.

2. The component pickup rate calculating system for a component mounter according to claim 1 , wherein
the production management computer is configured to calculate a component pickup rate during initial component pickup operations immediately after the tape feeder is set on the component mounter as the after-feeder-setting component pickup rate, and in a case of performing a recovery pickup operation when the pickup error occurs with the initial component pickup operation, the component pickup rate during the recovery pickup operation is included in the after-feeder-setting component pickup rate but not included in the main component pickup rate.

3. The component pickup rate calculating system for a component mounter according to claim 1 , wherein
the first counter is configured to total the component pickup operation quantity of the suction nozzle for each type of component supplied by the tape feeder,
the second counter is configured to total the pickup error quantity or the pickup quantity for each type of component supplied by the tape feeder, and
the production management computer is configured to calculate the after-feeder-setting component pickup rate and the main component pickup rate based on a total value of the first counter and a total value of the second counter for each type of component supplied by the tape feeder.

4. The component pickup rate calculating system for a component mounter according to claim 1 , wherein
the production management computer is configured to set a region for calculating the main component pickup rate as a region from after the region for calculating the after-feeding-setting component pickup rate has passed until a remaining length of the component supply tape loaded on the tape feeder, or until a component remaining quantity has reached a specified value, and then calculate a component pickup rate of after reaching the remaining length of the component supply tape or of the component remaining quantity reaching the specified value as a near-tape-trailing-end component pickup rate.

5. The component pickup rate calculating system for a component mounter according to claim 1 , wherein
the production management computer is configured to, in a case in which splicing is performed to connect a new component supply tape to the trailing end of the component supply tape set on the tape feeder, calculate a component pickup rate of a region within a specified length from a tape connecting position as an after-splicing component pickup rate.

Assignees

• Fuji Machine Mfg
• Fuji Corp

Inventors

• Murano Yoichi

Classifications

• H05K13/02 Primary

  Feeding of components · CPC title

• H05K13/0215

  Interconnecting of containers, e.g. splicing of tapes · CPC title

• H05K13/0895

  Maintenance systems or processes, e.g. indicating need for maintenance · CPC title

• H05K13/0419

  tape feeders · CPC title

• H05K13/083

  Quality monitoring using results from monitoring devices, e.g. feedback loops (H05K13/084 takes precedence) · CPC title