JPS6367447B2 - - Google Patents

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 bar code on the side wall of a tire and use this bar code 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. Nakatsuta.
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 since the magnetic sheet part deforms due to rubber flow during vulcanization, Previous data could not be displayed on the cured product.

This invention provides a data display method that can successfully display pre-vulcanization information together with vulcanization information on a vulcanized product, and allows pre-vulcanization information such as material information and molding information to be displayed on a vulcanized product. A single record is recorded on a magnetic sheet portion integrally formed on a desired part of the semi-finished product to be vulcanized, and the record is read immediately before vulcanization.
This pre-vulcanization information and vulcanization information are re-recorded as an uneven barcode on a desired part of the product during vulcanization, and/or as a magnetic record on the magnetic sheet portion of the product in the later stages of vulcanization or after vulcanization. It is characterized by Embodiments of the present invention will be described below, taking tires 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 on a known writing means (for example, a writing head). Then record it in this section. This green tire is suspended by 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, it is suspended by a loader. At this time, the data recorded on the magnetic sheet section is read by a known reading head, and the pre-vulcanization information and vulcanization information are recorded as a concavo-convex barcode during vulcanization, and/or
Alternatively, it is recorded again 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.

Figure 1 shows the barcode forming mechanism built into the mold used in the vulcanization process.This mechanism (forming part of the upper or lower mold)
1 includes a base body 3 having a plurality of pores 2, 2, . . . and forming a part of the inner surface of the mold, and cores 4, 4, . It will be equipped with
The core 4 is moved up and down by a solenoid 5, and at its upper position, its upper end surface is flush with the upper surface 3a of the base 3, and at its lower position, it is pulled out from the upper surface 3a of the base 3 by the amount by which the barcode 6 protrudes. It becomes a crowded state. That is, the pores 2 are for barcode molding, and this mechanism 1 allows the tire 7 to be formed during vulcanization.
A convex barcode 6 in a desired arrangement is formed on the surface of the barcode. 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 sheet section in which data before vulcanization is recorded. If it is on the "pull" side, the rubber surface will have a convex side. 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. Note that the barcode of the vulcanization data may be formed at an arbitrary position adjacent to or apart from the barcode of the pre-vulcanization data. In FIG. 1, A indicates a pre-vulcanization data barcode forming area, and B indicates a vulcanization data barcode forming area. Reading 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 it is also possible to read the data recorded on the green tire. It may also be carried out at the stage of mounting within the mold, in which case the reading head would be mounted within the mold.

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

In addition to converting and forming 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 the barcode groove on the mold. Of course, it is also possible to form it. With magnetic recording, there is a risk that the information may be disturbed by the presence of magnetic items or other tires that have been similarly magnetically recorded, so barcodes formed in the uneven shape are used to record and display information. It is most desirable to use it as a 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 the practical effect is extremely high. It became.

[Brief explanation of drawings]

Figure 1 is a sectional view of the barcode forming mechanism, Figure 2
The figure is a schematic diagram of a tire, and FIG. 3 is a block diagram showing one embodiment of the present invention. 1... Barcode forming mechanism, 2... Pore, 3...
... Base body, 4 ... Core, 5 ... Solenoid, 6 ...
Barcode, 7... Tire, 9... Reading head, 10... Computer, 11... Writing head, 12... Magnetic sheet portion, 13... Tire before vulcanization, 14... Tire after vulcanization.

Claims (1)

[Claims] 1 Record necessary information before vulcanization, such as material information and molding information, on a magnetic sheet integrally formed on a desired part of an unvulcanized rubber semi-finished product, and read the record immediately before vulcanization. This pre-vulcanization information and vulcanization information are recorded as an uneven bar code on a desired part of the product during vulcanization, and/or as a magnetic record on a magnetic sheet portion of the product in the later stages of vulcanization or after vulcanization. A method for displaying data on rubber products characterized by their ability to be repaired.