JPS5993338A - Displaying method of data on rubber product - Google Patents

Abstract

PURPOSE:To display information before vulcanization with information of vulcanization on a rubber product, e.g., tire, etc., by a method in which information before vulcanization is recorded on an unvulcanized magnetic sheet, and the information before vulcanization with information of vulcanization are rerecorded on an uneven bar code part and/or the magnetic sheet during the vulcanization period. CONSTITUTION:Necessary information before vulcanization, e.g., information on materials and molding, is once recorded on a magnetic sheet 12 integrally formed on a given position of an unvulcanized rubber product (e.g., unvulcanized tire, etc.). The recording is read out immediately before vulcanization, and the information before vulcanization and information of vulcanization are rerecorded as an uneven bar code 6 on a given position of the product 7 during the vulcanization, and/or rerecorded as magnetic recording on the magnetic sheet 12 of the product 14 in the later period of vulcanization or after the vulcanization. By these methods, data are displayed on the rubber products. The bar code 6 of an uneven form is formed on the surface of the rubber product 7, e.g., tire, etc., by vertically moving a core piece 4 according to information by a solenoid 5 by means of a molding mechanism built in the molds.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data display method for rubber products such as tires.

A known method is to form an uneven barcode on the side wall of a tire and use this barcode to display data such as the type and dimensions of the tire. However, since barcodes are formed using a mold during tire vulcanization, information during the vulcanization process can be recorded, but material information and molding information before the vulcanization process cannot be recorded. . On the other hand, there is a method of magnetically recording data on a magnetic sheet part that is integrally formed on a desired part of an unvulcanized rubber product, but the magnetic sheet part deforms due to rubber flow during vulcanization. Pre-vulcanization data could not be displayed on the cured product.

This invention provides a data display method that allows pre-vulcanization information to be displayed on a vulcanized product together with vulcanization information. This pre-vulcanization information and vulcanization information are recorded once on a magnetic sheet integrally formed on a desired part of an unvulcanized semi-finished product, and read the record immediately before vulcanization. As an uneven barcode on the desired part of the product, and/
Alternatively, it is characterized in that it is re-recorded as a magnetic record on the magnetic sheet portion of the product at a later stage of vulcanization or after vulcanization. Embodiments of the present invention will be described below, taking a tire as an example.

First, a magnetic sheet made of an unvulcanized rubber sheet containing magnetic powder is attached to the green tire that has undergone the molding process, and necessary information such as material information and molding information is written using a known writing means (for example, a writing head). Record in this section.

This green tire is suspended on a loader and fed into the mold of a vulcanizer, where it is cured and becomes a product. During this vulcanization process, when the green tire is on standby, for example, In this state, the data recorded on the magnetic sheet section is read by a known reading head, and the pre-vulcanization information and vulcanization information are read as a concave-convex barcode during vulcanization, and/or , it is redisplayed as a new magnetic record in the later stages of vulcanization or after vulcanization. This is to prevent data previously written there from becoming unreadable later due to rubber flow in the magnetic sheet portion during vulcanization.

FIG. 1 shows a barcode forming mechanism built into a mold used in the vulcanization process.
... and forms a part of the inner surface of the mold,
Cores 4, 4. which are slidably fitted into the pores 2 of the base.・・・
・It will be equipped with the following. The core 4 is moved up and down by a solenoid 5, and at its upper position, its upper end surface is in contact with the base 3.
The bar code 6 is flush with the upper surface 3a, and at the lower position is retracted from the upper surface 3a of the base 3 by the amount of barcode 6 protruding. That is, the pores 2 are for forming barcodes, and this mechanism 1 forms convex barcodes 6 in a desired arrangement on the surface of the tire 70 during vulcanization.

The solenoid 5 that moves the core 4 up and down operates in accordance with an electric signal from a reading head 9 that reads the recorded contents (1, 0, etc.) of the magnetic track section in which data before vulcanization is recorded. is on the “pull” side;
'The convex side will stick to the surface. The pre-vulcanization data is converted into a barcode in this way, but for the vulcanization data, a barcode groove corresponding to the vulcanization data is engraved directly on the mold in advance, or By attaching a barcode forming stencil to a mold, a desired barcode can be formed on the tire surface. In addition,
This barcode of vulcanization data may be formed at any position adjacent to or apart from the barcode of pre-vulcanization data. Figure 1 Chunin is the data barcode formation area before vulcanization, B
indicates the vulcanization data barcode forming area. The reading of the data recorded on the green tire needs to be done just before the actual vulcanization, so it may be done with the green tire suspended on the loader as described above, but This may be done at the stage of being installed in the mold; in this case, the reading head will be installed in the mold.

Instead of converting and forming both pre-vulcanization data and vulcanization data into barcodes as described above, as shown in FIG. The reading head 9 reads the data from the section 12 and temporarily stores it in the microcomputer 10, and the pre-vulcanization data and the vulcanization data are read out again in the vulcanized tire 14 in the later stage of vulcanization or immediately after vulcanization. The magnetic sheet portion 12 may be rewritten using the write head 11.

In addition to converting the pre-vulcanization data and vulcanization data into barcodes as described above, or rewriting them magnetically, the pre-vulcanization data can be read and temporarily stored just before the tire is vulcanized. While the vulcanization data is stored and rewritten in the later stages of vulcanization or after vulcanization, the desired barcode can be written onto the tire using a barcode forming stencil or by directly imprinting a barcode groove on the mold. Of course, it is also possible to form it. magnetic recording is
The information may be disturbed by the presence of magnetic objects or other tires that are also magnetically recorded.
It is most desirable to use the barcode formed in the uneven shape as a recording/displaying means.

Since this invention is constructed as described above, it is possible to effectively and appropriately record the pre-vulcanization information of the rubber product together with the vulcanization information at a desired position of the vulcanized finished product, and it has extremely high practical effects. It became a thing.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a barcode forming mechanism, FIG. 2 is a schematic diagram of a tire, and FIG. 3 is a block diagram showing one embodiment of the present invention. ■... Barcode forming mechanism, 2... Pore, 3...
Base, 4... Core, 5... Solenoid, 6... Barcode, 7... Tire, 9... Reading head, 1
o...Computer, 11...Writing head, 1
2... Magnetic sheet portion, 13... Tire before vulcanization, 14
・・Tire after vulcanization. Patent applicant Sumitomo Rubber Industries Co., Ltd. Agent Patent attorney Hiroshi Sugawara Figure 1

Claims (1)

[Claims] (1) Necessary information before vulcanization, such as material information and molding information, is recorded on a magnetic sheet integrally formed on a desired part of an unvulcanized rubber semi-finished product, and the information is recorded immediately before vulcanization. This pre-vulcanization information and vulcanization information are then applied to a desired part of the product as a barcode on the desired part of the product during vulcanization, and/or
A method for displaying data on rubber products, characterized by re-recording data on a magnetic sheet part of the product as a magnetic record in the late stage of vulcanization or after vulcanization.