JP6316544B2 - Tire marking device - Google Patents

Description

  The present invention relates to a tire marking device for marking a surface of a raw cover.

  In the tire manufacturing process, in order to distinguish the type, size, etc. of the tire, it is generally performed to mark the surface of the raw cover, and various apparatuses and methods therefor have been proposed (for example, Patent Document 1).

  Conventionally, for example, a tire marking device shown in FIG. 5 is used as such a tire marking device. FIG. 5 is a diagram schematically illustrating a main part of the tire marking device.

  As shown in FIG. 5, the tire marking device includes a lifting cylinder 104 that can move a traverse cylinder 102 in a horizontal direction. Then, a plurality of marking pieces 106 (four in FIG. 5) in which marks such as letters and numbers corresponding to a predetermined marking are engraved on the lower surface are attached to the tip of the lifting shaft of the lifting cylinder 104. . Reference numeral 108 denotes an ink tank. The ink tank 108 stores ink 120, and is configured to replenish the transfer roller 110 that rotates in the direction of the arrow.

  When the elevating cylinder 104 and the marking piece 106 move horizontally in the direction of the arrow and the marking piece 106 contacts the transfer roller 110, ink is transferred from the transfer roller 110 to the lower surface of the marking piece 106 (FIG. 5A). reference).

  The elevating cylinder 104 and the marking piece 106 are further moved horizontally to the position just above the raw cover T supported by the raw cover support member 112, and then the elevating shaft of the elevating cylinder 104 is lowered so that the lower surface of the marking piece 106 is covered with the low cover T. Press on. Thereby, predetermined marking is given to the surface of raw cover T (refer to Drawing 5 (b)).

JP 2002-36692 A

  However, in the above-described conventional tire marking device, the upper surface of the ink tank 108 is opened to dispose the transfer roller 110, and the ink 120 is scattered to easily contaminate the tire marking device and its surroundings. . In addition, since the ink 120 is likely to dry, it is necessary to always replenish the ink tank 108 with a thinning liquid, resulting in an extra cost.

  Therefore, in order to solve such a problem, the present applicant has considered supplying ink to the marking surface by using an ink pot in which ink is sealed in place of the ink tank.

  That is, by enclosing the ink in an ink pot and supplying an appropriate amount of ink to the engraved portion of the plate, the ink does not scatter and the occurrence of contamination around the apparatus and the apparatus is reduced. In addition, it was considered that it is possible to suppress the generation of extra cost because it is not necessary to replenish the diluting liquid and the amount of ink used can be reduced.

  However, it has been found that when such a tire marking device is used, the following problems may newly occur.

  That is, by using an ink pot for marking, it is possible to reduce the amount of ink used, but it is difficult to identify marks marked on the raw cover, such as numbers (see FIG. 6) and characters represented by lines. It has been found that there is a risk of problems.

  Specifically, for example, as shown in FIG. 7A, although a plate marked “8” is used (on the left side), the dotted line portion is missing or blurred during marking ( (Right side), “8” may not be identified. Further, as shown in FIG. 7B, when water-soluble ink is used, ink bleeding may occur during marking, and there is a possibility that “8” cannot be identified.

  Therefore, in view of the above, the present invention provides a tire for tires that can sufficiently identify the marking content by suppressing the occurrence of chipping, fading, bleeding, etc. in the marked mark in the marking using the ink pot. It is an object to provide a marking device.

The invention described in claim 1
A tire marking device for marking a surface of a raw cover,
A plate having a marking surface on which a predetermined mark corresponding to a mark to be marked on the raw cover surface is stamped;
An ink pot sealed with ink and arranged to supply the ink to the marking surface;
The mark engraved on the plate is represented by dots ,
The mark to be marked is a number, alphabet, kana or symbol,
The tire marking device, wherein the dots are visible .

  According to the present invention, in a marking using an ink pot, a marking device for a tire that can sufficiently identify a marking content by suppressing occurrence of chipping, fading, bleeding, etc. in the marked mark is provided. can do.

It is a figure showing typically the principal part of the marking device for tires concerning the present invention. It is a figure which shows one Embodiment of the plate used for the marking device for tires which concerns on this invention, (a) is a top view, (b) is a right view. It is an enlarged view which shows one Embodiment of the dot character stamped on the marking surface of a plate. It is an enlarged view showing a state where ink is blurred. It is a figure which shows typically the principal part of the conventional marking device for tires. It is explanatory drawing for demonstrating the line character currently formed in the marking surface of the conventional plate. It is explanatory drawing for demonstrating the problem of the conventional version.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a tire marking device according to the present invention will be described with reference to the drawings.

1. Configuration of Tire Marking Device First, the tire marking device in the present embodiment will be described. FIG. 1 is a diagram schematically showing the main part of a tire marking device according to the present invention. The tire marking device in the present embodiment has a marking surface 10 on which a predetermined mark is stamped on the upper surface side. A plate P, an ink pot 31 arranged to supply the ink 17 to the marking portion 15 of the marking surface 10 with the ink 17 enclosed therein, and a pad 61 having a transfer surface 12 to which the ink 17 is transferred. I have.

  Ink 17 is sealed inside the ink pot 31 and the ink supply surface is provided at the lower portion, so that an appropriate amount of ink 17 is supplied to the marking portion 15 so that the ink surface 11 is formed. It is configured.

  On the upper surface side of the plate P, a marking surface 10 having a marking portion 15 in which a predetermined mark is stamped is provided, and an appropriate amount of ink 17 is supplied to the concave portion of the marking portion 15.

  A transfer surface 12 is provided on the surface of the pad 61 so that the ink 17 supplied to the engraved portion 15 is transferred, and the transferred ink 17 is further transferred to the raw cover T.

2. Next, the plate used in the above-described tire marking device will be described. FIG. 2 is a view showing an example of a plate used in the tire marking device according to the present invention, in which (a) is a plan view and (b) is a right side view.

  As shown in FIG. 2, the plate P is made of a rectangular plate and has a marking surface 10 on the upper surface. On the marking surface 10, a rectangular portion indicated by diagonal lines is a marking portion 15, and a predetermined mark is expressed by dots.

  For example, when the mark is a number, for example, as shown in FIG. 3, the characters “0” to “9” are typically expressed from five dots arranged horizontally and seven dots vertically. preferable. Similarly, in the case of alphabets, kana, symbols, and the like, it is also preferable that the characters are expressed in an identifiable manner from dots arranged appropriately in the vertical and horizontal directions according to the respective characteristics.

  As described above, when the mark is expressed by dots, even when the amount of ink is small, there is no unevenness in the supply of ink to the engraved portion 15 and the above-described transfer is performed twice. Also, the occurrence of chipping and blurring can be sufficiently suppressed.

  Further, since the amount of ink supplied to the dots can be reduced as compared with the case where the ink is not expressed by dots, the amount of ink used can be further reduced.

  By expressing the mark with dots, even if bleeding occurs using water-soluble ink, the bleeding occurs almost equally in each dot as shown in FIG. Less disturbed.

3. Operation of Tire Marking Device Finally, the operation of the tire marking device will be described.

  First, the ink supply surface is pressed against the marking portion 15 of the marking surface 10 of the plate P, whereby the ink 17 is supplied from the ink pot 31 to the concave portion of the marking portion 15. At this time, ink is supplied to the dots representing the characters on the plate 15. Thereafter, the plate P to which the ink 17 has been supplied is conveyed to below the pad 61.

  Next, the pad 61 is lowered and the transfer surface 12 is pressed against the marking portion 15, whereby the ink 17 is transferred from the concave portion of the marking portion 15 to the transfer surface 12. At this time, the ink supplied to the dots representing the characters on the plate 15 is transferred to the transfer surface 12. Thereafter, the pad 61 to which the ink 17 has been transferred is conveyed to above the raw cover T.

  Next, the raw cover T is raised and the surface of the raw cover T is pressed against the transfer surface 12, whereby the ink 17 is transferred from the transfer surface 12 to the surface of the raw cover T, and the raw cover T is marked.

  At this time, as described above, since the mark is expressed by dots, the occurrence of chipping, fading, bleeding, etc. is suppressed, and the marking contents can be sufficiently identified.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above-described embodiments within the same and equivalent scope as the present invention.

DESCRIPTION OF SYMBOLS 10 Marking surface 11 Ink surface 12 Transfer surface 15 Marking part 16 Dot 17, 120 Ink 31 Ink pot 61 Pad 102 Traverse cylinder 104 Lifting cylinder 106 Marking piece 108 Ink tank 110 Transfer roller 112 Low cover support member P plate T Low cover

Claims (1)

A tire marking device for marking a surface of a raw cover,
A plate having a marking surface on which a predetermined mark corresponding to a mark to be marked on the raw cover surface is stamped;
An ink pot sealed with ink and arranged to supply the ink to the marking surface;
The mark engraved on the plate is represented by dots ,
The mark to be marked is a number, alphabet, kana or symbol,
The tire marking device, wherein the dots are visible .

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