JPH04126838U - Rubber product mold - Google Patents

Abstract

(57) [Summary] [Purpose] To improve efficiency in the use of molds by easily and quickly manufacturing marking plates and attaching/replacing them to molds without damaging the appearance of rubber products. [Configuration] Mark plate fitting recess on the side of mold 1, etc.
4, and a mark plate 3 is replaceably fitted into the recess 4 via a packing 8 made of rubber or synthetic resin, and a gap is created between the recess 4 and the mark plate 3. I have made sure that there is no such thing.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention applies to tires and other rubber-based rubber (including synthetic rubber, mixed rubber, etc.). This relates to molds for molding products.

0002

[Conventional technology]

Generally, rubber products, such as tires, have sidewalls during the molding process. Marks such as various letters, numbers, symbols, identification bars, etc. that can be visually identified by humans are engraved on the main part. has been done. Conventionally, when stamping the above mark, the side surface (sidewall part) of the tire mold ), make a counterbore to an arbitrary depth to form a recess for fitting the mark plate, and then After engraving or engraving a mark on a plate made to match the actual part, the recessed part is How to fit the plate into Insert the engraved mark plate into the recessed or non-recessed part of the mold with a screw, etc. A method of fixing is used.

0003

[Problem that the idea aims to solve]

By the way, in the former of the above conventional techniques, the mark plate and the recess of the mold Although the appearance is good with no overspew or other rubber protruding into the gaps, the actual Since plates are manufactured by matching, processing is also required when adding marking plates. The mold is required during the period, the mold usage time is limited, and the mold is stuck in the mold recess. If the plate is stuck, it will be difficult to remove the plate when replacing it, and you may have to remove it by force. There are problems such as the plate deforming and becoming unusable. Also, after the conventional technology If you are a manufacturer, you can manufacture the mark plate separately from the mold, and you can attach it to the mold. The work is relatively easy as it does not require actual alignment, but the marking plate is It does not fit perfectly with the mold, and due to long-term use, it becomes deformed and the marking plate Problems such as rubber protruding from the gap between the molds, causing poor appearance of the tire. There is.

0004 This invention was made in view of the above-mentioned circumstances, and its purpose is to , it is easy to manufacture the mark plate and attach it to the mold, and it takes less time to attach it to the mold. We aim to make the use of molds more efficient by minimizing the amount of damage that occurs, and the work of replacing marking plates is reduced. Rubber product manufacturing that is easy and quick and does not damage the appearance of the rubber product. We provide molds and molds.

[0005]

[Means to solve the problem]

In order to achieve the above object, the present invention takes the following technical measures. In other words, the present invention is a rubber product with a mark plate replaceably attached to the side surface, etc. In the mold, the outer peripheral edge of the mark plate is made of rubber or synthetic resin material. It is characterized by the inclusion of a packing.

[0006]

[Effect]

According to the present invention, there is a rubber or composite material between the outer peripheral edge of the marking plate and the mold surface. Since a packing made of plastic material is interposed, there is no space between the plate and the mold. There are no gaps, rubber, etc. do not protrude, and the appearance of the product is not impaired. Also, The mark plate fitting recess is machined to be slightly larger than the mark plate size. As a result, the mark plate can be manufactured separately from the mold, and can be manufactured separately from the mold. There is no need for actual matching work. Furthermore, when replacing the mark plate, Marking can be done by loosening and removing the fixing screw that fixes the marking plate to the mold. The replacement plate can be easily removed without deforming the replacement plate. You can make and prepare them individually.

[0007]

【Example】

Hereinafter, embodiments of the present invention will be described based on the drawings. Figure 1 shows an example in which the present invention is applied to a tire molding mold. The split tire molding part 2 is formed, and the mark molding part, that is, the sidewall There is a plate fitting recess in which the mark plate 3 (template) is buried flush. 4 is formed. (See Figures 2, 3, and 4) This plate fitting recess 4 The depth is the same as the thickness of rate 3 (approximately 1.5 to 3.0 mm), and its length and width are determined by the thickness of the plate. The length and width of G3 are slightly larger (approximately 1.0 to 3.0 mm each).

[0008] The plate 3 is made of a steel plate or a stencil plate with a thickness of 1.5 to 3.0 mm with the required marking. Mark 5 is carved from various letters, numbers, symbols, identification bars, etc. As a result, many necessary items of the same shape and size are prepared and can be replaced as necessary. Fixing screw holes 6 are provided at both lengthwise ends. And the play The outer peripheral edge 7 of the plate 3 is chamfered toward the back side, and the thickness of the front side is 1.0 mm. Rubber (for example, compound rubber) so that the outer circumferential surface is approximately perpendicular to the surface at a distance of ~3.0 mm. A packing 8 made of aluminum or soft synthetic resin material is attached. In addition, the packing The pin 8 is designed so that a protrusion 8A of 0.5 mm or less is formed from the back surface of the plate 3. Ru. Therefore, the mark plate 3 is placed in the plate fitting recess 4 of the molding die 1. , insert the fixing screw 9 into the screw hole 6, and tighten and fix the plate 3. , the protruding part 8A of the packing 8 is located in front of the mold 1 due to the chamfered part of the outer peripheral edge 7 of the plate. The recessed portion 4 is pressed against the peripheral wall and elastically deforms, and the recessed portion 4 is pressed against the peripheral wall and the outer peripheral end of the plate. The packing 8 is in close contact with the edge 7, and the gap 10 between the two 3 and 4 is completely closed.

[0009] Therefore, when replacing the mark plate 3, use a separately manufactured plate in advance. Prepare the plate 3 and screw it into the mark plate fitting recess 4 of the tire mold 1. When the fixing screw 9 is loosened and removed, the plate 3 will be slightly lifted due to the elasticity of the packing 8. Plate 3 can be easily removed, and the plate 3 to be replaced can be All you have to do is fit it into the recess 4 and fix it to the tire mold 1 with the fixing screw 9. It can be easily and quickly replaced, and the time required to replace the marking plate 3 is short, making it easier to mold the tire. The downtime of mold 1 can be significantly reduced.

0010 In the above embodiment, the packing 8 is attached to the outer peripheral edge 7 of the marking plate 3. However, the packing 8 is fitted to the peripheral wall of the plate fitting recess 4 provided in the tire mold 1. (adhesion or insertion only), and the same effect as the above example can be expected. I can do that. In addition, instead of the above embodiment, as shown in FIGS. 6, 7, and 8, the plate 3 and plate There is no gap 10 between the sides of the plate fitting recess 4, and the plate 3 is inserted into the plate fitting recess 4. A close-fitting structure may also be used, or a plug-in structure may be used as shown in FIGS. 9, 10, and 11. Attaching the mark plate 3 directly to the mold surface without forming the rate fitting recess 4 be able to.

[0011] The present invention is not limited to the above-mentioned embodiments, but includes, for example, tire molding molds, etc. It can also be used in molds for molding other synthetic resin products.

0012

[Effect of the idea]

As mentioned above, the present invention is based on a rubber plate with a mark plate attached to the side surface etc. in a replaceable manner. In a mold for molding a product, the space between the outer peripheral edge of the marking plate and the mold surface. It is characterized by having a packing made of rubber or synthetic resin interposed between the Because of this, the appearance of the molded product is not spoiled by protruding rubber, etc., and the marking plate is Perform work such as attaching, removing, and replacing plates easily, quickly, and accurately. Since the marking plate can be manufactured separately from the mold, the marking plate can be manufactured separately from the mold. It can significantly reduce mold down time, improve usage efficiency, and reduce mold markings. It is relatively easy to perform mark processing work, and when replacing the mark plate, it is possible to It does not deform the plate.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG. 1;

FIG. 3 is an enlarged plan view of the mark plate of the first embodiment.

FIG. 4 is a sectional view taken along line BB in FIG. 3;

FIG. 5 is a sectional view taken along line CC in FIG. 3;

FIG. 6 is an enlarged plan view of a marking plate according to a second embodiment of the present invention.

7 is a sectional view taken along line DD in FIG. 6. FIG.

8 is a cross-sectional view taken along the line E-E in FIG. 6. FIG.

FIG. 9 is an enlarged plan view of a mark plate according to a third embodiment of the present invention.

FIG. 10 is a sectional view taken along line FF in FIG. 9;

11 is a sectional view taken along line GG in FIG. 9. FIG.

[Explanation of symbols]

1 Tire mold 3 Mark plate 7 Outer edge of plate 8 Packing

──────────────────────────────────────────────── ─── Continued from front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location B29L 30:00 4F

Claims (1)

[Scope of utility model registration request] 1. A mold for molding a rubber product having a mark plate replaceably attached to the side surface, etc., characterized in that a packing made of rubber or synthetic resin is interposed on the outer peripheral edge of the mark plate. A mold for molding rubber products.