JP2003295936A - Production managing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To produce products of various variations by changing product numbers till the products are completed and also enable the production histories of the final products to be noticed. <P>SOLUTION: A two-dimension code 21 is stuck on a substrate 11 of component state, and a reflow process and a flow process are carried out in accordance with manufacturing conditions stipulated by the two-dimension code 21. Then, in order to produce the products of various variations in response to required quantities, in a connector installing process (subsequent odd-form process), a new two-dimension code 22 which represents a subsequent manufacturing condition while inheriting the two-dimension code 21 already stuck is stuck on the connector 12, and then a subsequent process is carried out in accordance with the manufacturing conditions stipulated by the two-dimension code 22 newly stuck. Then, in a packaging process, a case is installed in the substrate 11 and a name label 23 is stuck on the case 13. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a production control method for performing production control using a two-dimensional code.

[0002]

2. Description of the Related Art Conventionally, various production management methods have been proposed in which a two-dimensional code is assigned to each of the parts to be manufactured and the production is controlled by the two-dimensional code.

According to this method, since a two-dimensional code is used, it is possible to give sufficient information with a smaller area than a one-dimensional code such as a bar code, and to secure a sufficient area to give such a code. It is very effective for products that cannot be manufactured, for example, assembled products that require integration. In addition, since the two-dimensional code is assigned not for each lot but for each component, it is possible to manage each product.

[0004]

In the above-mentioned conventional production control method, all production control is performed by one two-dimensional code. However, depending on the product, there are cases in which it is desired to change the product number to reach various final product variations. For example, in the production of a large number of small quantities, there are cases where it is desired to make products that have been manufactured with common parts (having the same product number) up to the middle of the products into various variations according to the required quantity. The conventional production management system does not anticipate such a case, and thus has a problem that it cannot cope with such a case. Further, in the above-described case, if the manufacturing history of the manufacturing conditions of the final product is known, it can be useful for defect analysis and the like.

The present invention has been made in view of the above problems, and an object of the present invention is to change the product number to reach a final product so that various variations can be obtained and the manufacturing history of the final product can be known. .

[0006]

In order to achieve the above object, in the invention described in claim 1, a two-dimensional code including a product number is given to each unit from a part to a final product, and the two-dimensional code is given. It is a production management method that performs production management by code, and is characterized by changing the product number by assigning a new two-dimensional code while inheriting the two-dimensional code previously assigned during manufacturing. .

Since the product number is changed by adding a new two-dimensional code in the course of manufacturing as described above, it is possible to change the product number before the final product to obtain various variations.

Further, in this case, since the previously given two-dimensional code is inherited, the manufacturing history can be known in the final product by the two-dimensional code and the new two-dimensional code. be able to.

The new two-dimensional code can be added to a portion different from the previously given two-dimensional code as in the second aspect of the invention. In this case, when it is not necessary to change the product number as in the invention according to claim 3, the same two-dimensional code as the previously given two-dimensional code is added to the different portion to change the product number. If necessary, if a new two-dimensional code is added to the different part, if the product number changes,
It is possible to deal with any case where it does not change.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIG. 1, an outline of a production control method according to an embodiment of the present invention will be described.
An example will be described in which an electronic control device is manufactured by mounting electronic components on a substrate. In this embodiment, the two-dimensional code includes the product number / lot / serial ID.
The QR code (registered trademark) is used as the two-dimensional code.

First, the two-dimensional code 21 is attached in the form of a label on the substrate 11 in the component state. After that, according to the manufacturing conditions according to the two-dimensional code 21, a reflow process,
A flow process is performed. In the steps up to this point, they are manufactured as common parts (having the same part number).

Thereafter, in the process of assembling the connector (post-deformation process), the two-dimensional code 21 previously attached is inherited in order to make various variations of the product according to the required quantity, and the subsequent manufacturing is performed. A new two-dimensional code 22 indicating the condition is attached in the form of a label to a mounting unused portion (for example, on the connector 12).

Then, the newly attached two-dimensional code 2
A soldering process, a board inspection process, and the like are performed according to the manufacturing conditions of 2. And in the packaging process,
The case 13 is assembled to the substrate 11, and the name label 23 is attached to the case 13. In this case, a two-dimensional code indicating the final product may be newly provided in or near the name label 23.

After that, an inspection process such as a temperature inspection is performed, and the product is shipped as a final product.

In the above example, the above-mentioned two-dimensional code 21 is changed to the new two-dimensional code 22 once, but it may be changed two or more times if necessary.

The above production management is carried out using a computer network. A specific example will be described below.

FIG. 2 shows an outline of the production line in the factory. Each of the above steps is performed in a line called a cell. There are multiple lines in each cell,
A cell controller is provided for each line. Each cell controller is connected to a production management computer, and this production management computer performs overall production management.
Each cell controller is configured to have a computer, and functions as an interface that controls data exchange between a facility and a production management computer, which will be described later, in each cell. Further, if necessary, a block computer that manages the cell controller in block units may be provided between the cell controller and the production management computer.

When manufacturing the above-mentioned electronic control unit, first, the two-dimensional code is attached to each substrate by the code attaching machine 30. Then, each processing (processing, inspection, etc.) is performed in each cell according to the manufacturing condition by the two-dimensional code.

A plurality of equipments 31 to 37 are provided in one cell as shown in FIG. 3, and these equipments 31 to 37 are provided.
Then, the two-dimensional code is read and data is exchanged with the production management computer 50 via the cell controller 40, so that the processing in the equipment is performed according to the manufacturing conditions by the two-dimensional code.

Specifically, first, the entrance facility 3 for the cell entrance
In step 1, the two-dimensional code is read, and whether or not work can be performed is determined by the production control computer 50 via the cell controller 40.
Contact us. If the product number included in the two-dimensional code matches the one specified in advance, OK is returned, and if the product number does not match or the state is abnormal, NG is returned to the entrance facility. Those that become NG are removed. When the result is OK, the process is performed according to the production instruction from the production management computer 50. After that, the two-dimensional code is similarly read in each of the equipments 32 to 36, and the production management computer 50
Each processing is performed according to the production instruction from. Then, the equipment 37 at the cell exit reads the two-dimensional codes of all the non-defective products dispensed, and the production management computer 5
Reported to 0.

Further, in the rear variant cell, a process of attaching a new two-dimensional code 22 on the assembled connector 12 is performed. For this reason, some equipment in the rear irregular-shaped cell has a code pasting machine for pasting the two-dimensional code 22, and performs the process of pasting the two-dimensional code 22.
FIG. 4 shows the processing executed by the computer in the equipment in this case.

First, on the equipment side, the two-dimensional code 21 attached to the substrate 11 is read (step 101).
It is determined whether or not it indicates a product whose product number is changed (step 102). The production management computer 50 notifies the product of which the product number is changed in advance, and the above-described determination is performed based on the notification. If the product is not the product for which the product number is changed, the code pasting machine is controlled so that the two-dimensional code (that is, the same two-dimensional code as before) 22 without changing the product number is printed and pasted on the connector 12 (steps 103 and 104).

If the product is a product whose product number is changed,
The production control computer 50 is inquired of that effect via the cell controller 40 (step 105). The production management computer 50 retrieves the changed product number (step 106) and notifies the equipment side of the product number via the cell controller 40 (step 107). On the equipment side, the code pasting machine is controlled so that the two-dimensional code 22 changed to the notified product number is printed and pasted on the connector 12 (steps 108 and 104).

With the two-dimensional code 22 newly attached in this way, the soldering cell, the substrate inspection cell, the package cell, and the temperature inspection cell are subjected to respective processings according to the manufacturing conditions.

In the inspection process, the inspection equipment differs depending on the newly attached two-dimensional code 22. For this reason, by mixing the same transport routes and picking each one at the next facility,
The inspection method of the mixed work (board or product) is changed. In that case, a work picking robot is used to move the work. In addition, if one of the cells was removed as a defective product, repair and repair
It is revived as a good product and returned to the original cell. Also in this case, according to the instruction from the production management computer 50 that a special inspection different from the others is performed in the inspection process,
The inspection is carried out at the equipment corresponding to it.

As described above, according to the above-described embodiment, the two-dimensional code including the product number, lot, and serial ID is attached from the substrate in the component state, and the equipment reads the two-dimensional code, so that all the final products can be obtained. Achieves automatic setup production. In addition, by attaching a new 2D code during manufacturing, it is possible to change to another product as required by design, and the 2D code before replacement is left on the product. Even if you switch to, the succession of manufacturing can be grasped in kind.

The manufacturing history of each product is recorded and managed in the database of the production management computer 50. Therefore, the manufacturing history can be retrieved only by reading the actual two-dimensional code, and it can be useful information when performing a failure analysis on the product returned from the market.

In the above embodiment, the two-dimensional code is attached, but laser marking may be used instead of the attachment. In short, it may be performed in a form in which a two-dimensional code is added. In addition, when adding a new 2D code, the new 2D code is added while inheriting the previous 2D code, but this is the state that you can see if you look at the previous 2D code. It means to add a new two-dimensional code in the state of remaining in the final product, and it is possible to attach a new two-dimensional code at a place different from the previous two-dimensional code as in the above embodiment. In addition, it also includes a case where a new two-dimensional code is pasted on the previous two-dimensional code.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an outline of a production management method according to an embodiment of the present invention.

FIG. 2 is a diagram showing an outline of a production line in a factory to which a production management method according to an embodiment of the present invention is applied.

FIG. 3 is a diagram showing an equipment configuration in one cell in FIG.

FIG. 4 is a flowchart showing a process for pasting a two-dimensional code, which is executed by a certain equipment, in the rear variant cell in FIG.

[Explanation of symbols]

11 ... Board, 12 ... Connector, 13 ... Case, 21, 2
2 ... Two-dimensional code, 23 ... Name label.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Norio Takeshima             1-1, Showa-cho, Kariya city, Aichi stock market             Inside the company DENSO F term (reference) 3C100 AA29 AA57 BB33 DD03 DD14                       DD22 DD23 EE07

Claims (3)

[Claims] 1. From each part to the final product,
It is a production management method that assigns a two-dimensional code including a product number and performs production control by using the two-dimensional code. A production control method characterized by giving and changing a product number. 2. The production control method according to claim 1, wherein the new two-dimensional code is added to a portion different from the previously given two-dimensional code. 3. In the step of assigning the new two-dimensional code, if it is not necessary to change the product number, the same two-dimensional code as the previously assigned two-dimensional code is applied to the different portion, and the product number is changed. The production management method according to claim 2, wherein the new two-dimensional code is added to the different portion when the change of is necessary.