JPH0660086A - Product quality control system - Google Patents

Abstract

PURPOSE:To timely feedback the problem of a product quality to a manufacturing and designing part by adhering a label in which a manufacture lot number is bar code-converted to each product at the time of assembling the product, registering the manufacture lot number and the defective code of the product in a quality history data base by making them to correspond each other, and recognizing the situation of the quality of the product by reading the bar code before an inspecting operation. CONSTITUTION:At the time of assembling a product A8, a bar code label 9 in which the manufacture lot number is bar code-converted is adhered. In an inspecting process, the bar code label 9 is read by a bar code reader 7. When the content of the bar code label 9 is a 'name of product A' and a 'manufacture lot number 1', a quality check module 4 reads the number of the defectives of the 'quality A' or the number of the defectives of the 'manufacture lot number 1' from a quality history data base 2, collates it to a quality reference value 5 preliminarily registered from a terminal 6 through the quality check module 4, and judges whether or not it is within the quality reference value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quality control system which promptly finds a manufacturing quality defect during a product inspection operation and gives a manufacturing interruption instruction and defect cause investigation support.

[0002]

2. Description of the Related Art In the conventional quality control of products, in the inspection work process of high-mix low-volume products, product defects are collected, the results are summarized and statistically analyzed manually by hand, and product defect countermeasures are implemented at a later date. Was there.

[0003]

In the conventional quality control of products, since the same product is not put into the process in large quantity in the inspection work of a large number of products in small quantities, it is possible to detect similar defects in the same product. There is a drawback in that it is not possible to accurately detect when a defect is repeated in the product of the same manufacturing lot number, the countermeasure for the quality defect is delayed, and the number of treatment steps is large.

The object of the present invention is to collect and centrally manage the quality data generated during the inspection work of a product, collate the quality situation with a reference value, and improve the quality when the quality of the product exceeds the reference value. To provide a product quality control system that directs.

[0005]

The product quality control system of the present invention is to attach a bar coded label of a product name and a manufacturing lot number to a product, and to use this to collect and code defective contents of the product. The quality collection means for registering the quality history database in units of manufacturing lot numbers, the quality standard registration means for pre-registering the non-defective product judgment reference value of each product, and the bar code label attached to the product at the time of product inspection. The product name and manufacturing lot number, the history data of the quality history database and the quality standard value of the quality standard registration means are collated, and if the number of defects of the product exceeds the quality standard value, an instruction to suspend the inspection work is given. It has a quality check means and the quality history database for centrally managing quality defects in units of manufacturing lot numbers.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing the structure of quality history data.

In the embodiment of the present invention shown in FIG. 1, a product such as an electronic circuit package is attached with a label in which a manufacturing lot number is bar-coded, and the product is used to collect the product quality in units of the manufacturing lot number. A collection module 3, a quality check module 4 for determining an instruction to suspend inspection work from a quality history in units of manufacturing lot numbers, a quality history database 2 for centrally managing quality defects in units of manufacturing lot numbers, and a quality reference value 5. Prepared for the computer 1.

At the time of assembling the product A8, a bar code label 9 in which the manufacturing lot number is bar coded is attached. In the inspection process, the barcode label 9 of the product A8 is read by the barcode reader 7. In the quality check module 4, the contents of the barcode label 9 are "Product name A" and "Production lot number 1".
At this time, the number of defects of "quality A" or the number of defects of manufacturing lot number 1 is read from the quality history database 2 via the quality check module 4, and the quality reference value is registered in advance via the quality check module 4 from the terminal 6. It is checked whether it is within the quality standard value by collating with 5.

When the number of defects of "product name A" exceeds the quality standard value, the computer 1 sends the "product name A" to the terminal 6.
Instructs to interrupt the inspection work due to frequent occurrence of quality defects, and requests the cause investigation request from the manufacturing department or the design department. If the number of defects in the manufacturing lot number 1 exceeds the reference value, the computer 1 requests the terminal 6 to perform an intensive check of the inspection work of the "manufacturing serial 1". As a result of collation with the quality reference value 5, if the quality reference value is not exceeded, inspection work is performed. As a result, if a defect is found, the defect code corresponding to the defective item is input from the terminal 6 and the quality collection module 3 is set. Via the quality history database 2. The non-defective product 10 for which the inspection work has been completed is moved to the non-defective product area, and the defective 1 code product 8 and the defective 2 code product 11 are moved to the defective product area.

FIG. 2 shows the structure of the quality history database 2.
In the product name A, 5 out of 100 total inspection quantity are defective quantity, of which 1 defective quantity is 3 and the breakdown is manufacturing lot number 1.
00 is one at 9:00 on October 1, 1991, manufacturing lot number 90 is one at 9:10 on September 1, 1991, and manufacturing lot number 81 is 9:05 on August 1, 1991. The number of defective products with a defective 2 code is 1 and it is 9
The defective production lot number 98 is shown at 10:00 on the 20th of each month.

[0011]

As described above, according to the present invention, in order to control the quality of the product during the inspection work, a label in which the production lot number is bar-coded is attached to each product at the time of assembly, and the production lot number is attached. Since the product and the defective code of the product are registered in the quality history database in correspondence with each other, if the barcode of the product is read before the inspection work, the quality status of the same product and the quality status of the product can be known, and the preset quality As a result of the comparison with the reference value, the content of the work interruption is displayed on the terminal, and the quality problem can be fed back to the manufacturing department and the design department in a timely manner. Moreover, since the quality history is centrally managed, it is not necessary to manage the ledger by a person.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a quality history database of the present embodiment.

[Explanation of symbols]

 1 Computer 2 Quality History Database 3 Quality Collection Module 4 Quality Check Module 5 Quality Standard 6 Terminal 7 Bar Code Reader 8 Product A 9 Bar Code Label 10 Product B 11 Product C

Claims (1)

[Claims] 1. A quality collection in which a label in which a product name and a manufacturing lot number are bar-coded is attached to a product, the contents of defects of the product are collected and coded by using the label, and registered in a quality history database for each manufacturing lot number. Means, and quality standard registration means for pre-registering a non-defective judgment reference value for each product,
The product name and manufacturing lot number of the barcode label attached to the product at the time of product inspection, the history data of the quality history database and the quality standard value of the quality standard registration means are collated, and the number of defective products is A product quality management system comprising: a quality check means for instructing interruption of inspection work when the quality standard value is exceeded, and the quality history database for centrally managing quality defects in units of manufacturing lot numbers.