JPH04176706A - Manufacture of solid tire for industrial vehicle - Google Patents

Abstract

PURPOSE:To facilitate the assembly of a metal screen, etc., in shaping a solid tire for a fork-lift truck, etc., by embedding an annular ring having the slightly larger diameter than a base band in concentric form on a rubber trunk body and erecting the metal screen, etc., in radial form by a member which is installed outside the ring and has a U-shaped section. CONSTITUTION:A metal screen 6 is cut according to the sectional shape of a rubber trunk body 1'. One edge of the metal screen 6 is inserted into the groove part 4' of an installation member 4 having a U-section and supported in erection state. The installation members 4 on which the metal screen 6 is installed are laid at a certain interval along the outer peripheral surfaces of a pair of rings 3 and 3, and welded onto the rings 3 and 3. Then, the ring 3 is set in a metal mold, positioned in concentric circular form for a base band 2, and the liquid rubber such as urethane rubber is poured, and then vulcanization is carried out.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to solid tires used for industrial vehicles such as forklift trucks, and more particularly to a method for manufacturing solid tires in which a wire mesh, wire, etc. for anti-slip are embedded. .

[Conventional technology]

Solid type tires are commonly used on industrial vehicles, especially forklift trucks. Since solid tires are usually used under high load and low speed conditions, they are relatively hard and are molded as plain tires with no tread pattern using materials such as urethane rubber. In a work environment that is prone to slipping, there is a problem in that the grip of the tires on the frozen floor surface is reduced. Conventionally, as a solution to this problem, a method has been proposed in which a wire mesh, wire, etc. for anti-slip purposes is buried within the rubber body of the tire.
The following two methods have been disclosed as burying methods.

■ It is installed so that it is embedded and molded with one end of wire mesh, wire, etc. attached to the baseband side of the wheel.

That is, the wire mesh, wire, etc. are positioned by the base band,
A method of installing the baseband by extending it between the outer peripheral surface of the baseband and the inner peripheral surface of a mold formed into a ring shape.

■ It is installed so that one end of wire mesh, wire, etc. is attached to the inner circumferential surface of the mold and the mold is embedded. That is, a method in which wire mesh, wire, etc. are positioned on the mold side.

[Problem to be solved by the invention]

However, in the above-mentioned method of burying wire mesh, wire, etc., special processing is applied to the baseband side, and the wire mesh, wire, etc. is set while accurately aligning, or a flexible band-shaped body is used. It is necessary to plant wire mesh, wire, etc. in the tire, and after embedding and molding, cut the tire skin to remove the band-like part.
Assembling wire mesh, wire, etc. to the mold during vulcanization molding is a work process.
In particular, there is a problem in that the alignment is troublesome.

The present invention is an attempt to improve the above-mentioned problems, and an object of the present invention is to enable easy embedding of wire mesh, etc., without impairing the cushioning properties of the tire. It is in. That is, the installation is characterized by providing a separate ring with a wire mesh or the like extending radially through the member, and embedding the tire material between the ring and the base band, The specific means are as follows.

[Means to solve the problem]

(2) For installation in which a groove is formed into a strip with a U-shaped cross section, a member is provided and a wire mesh or metal wire (wire, etc.) is planted in the groove.

■ A ring formed in an annular shape with a slightly larger diameter than the baseband is provided, and the above-mentioned mounting member is arranged on the outer peripheral surface of the ring in the axial direction so that the groove opens outward. Fix it at regular intervals.

■ The above ring is buried in the rubber body of the solid tire so that there is an appropriate distance between the ring and the baseband and the tip of the wire mesh or metal wire is on the same plane as the tread surface. . That is, the ring is provided so as to be arranged concentrically with respect to the baseband, and the wire mesh or metal wire is provided so as to extend over the outer peripheral surface of the ring and the surface of the tread portion.

〔Example〕

Specific embodiments of the present invention will be described below with reference to illustrative drawings.

1 is a solid tire, 1' is a rubber body constituting the solid tire 1, and 2 is a base band of a wheel.

Reference numeral 3 denotes a ring made of a metal material and formed into an annular shape with a diameter slightly larger than that of the base band 2 and a width smaller than that of the base band 2, and the ring 3 has a rubber body. 1' are buried in concentric circles with the baseband 2, respectively, in the vicinity of both side surfaces of the baseband 2'. That is, the same ring 3
is buried with an appropriate distance from the baseband 2.

Reference numeral 4 denotes a member for attaching a wire mesh 6, which will be described later, and the member 4 has a length slightly smaller than the width of the base band 2 and has a substantially U-shaped cross section. That is, for this attachment, the member 4 is constituted by a pair of rising pieces formed at both ends in the width direction, and a groove 4' formed between the rising pieces. In this attachment, both lengthwise ends of the member 4 are fixed at regular intervals along the outer peripheral surfaces of the pair of rings 3, 3 described above. More specifically, the member 4 is installed in such a manner that the member 4 is arranged in the axial direction of the ring 3 so that its groove 4' opens toward the tread portion 5 of the solid tire 1.

Reference numeral 6 denotes the aforementioned wire mesh, and the wire mesh 6 is cut into a substantially rectangular shape and has dimensions slightly smaller than the cross-sectional shape of the rubber body 1'. The wire mesh 6 is then attached to the member 4 in the above-mentioned manner. More specifically, the wire mesh 6 is attached by inserting one end thereof into a groove 4' formed in the member 4 and sandwiching it between two rising pieces forming the groove 4'. or.

The wire mesh 6 is embedded in the rubber body 1' so as to extend along the member 4 in the axial direction and radial direction of the ring 3, and its tip is flush with the surface of the tread portion 5. It is set up as far as possible.

Next, the manufacturing method will be explained.

The wire mesh 6 is cut to match the cross-sectional shape of the rubber body 1', and a groove 4' having a substantially U-shaped cross-section is provided, and a member 4 is provided for attachment. One end of the wire mesh 6 is inserted vertically. With the wire mesh 6 inserted into the groove 4' in this way, by bending both rising pieces inward in the direction of closing the groove 4', the wire mesh 6 is inserted between the two rising pieces. A state in which one end is clamped is obtained.

In addition, in this way, with one end of the wire mesh 6 sandwiched between the two rising pieces of the member 4, the member 4 is mounted horizontally at regular intervals along the outer peripheral surfaces of the pair of rings 3, 3. let me,
By welding both ends to both rings 3.degree. 3, a state is obtained in which the wire mesh 6 is disposed in the axial direction of the ring 3 via the member 4. That is, a state is obtained in which the wire mesh 6 extends radially outward from the outer peripheral surface of the ring 3.

In addition, with the wire mesh 6 extending in the radial direction from the outer circumferential surface of the ring 3 in this way, the ring 3 is placed in a metal mesh so that the ring 3 is positioned concentrically with respect to the baseband 2. By setting it in the mold, the baseband 2
An appropriate gap is formed between the wire mesh 6 and the ring 3, and a state is obtained in which the tip of the wire mesh 6 comes into contact with the inner peripheral surface of the mold.

Therefore, by filling a mold with liquid rubber such as urethane and vulcanizing it, a solid tire 1 in which a wire mesh 6 is embedded can be obtained.

In this embodiment, the wire mesh 6 is used, but the wire mesh 6 is not limited thereto, and metal wires such as wire may also be used. Furthermore, the number of rings 3 is not limited to two,
For example, it is possible to use one wheel or three wheels.

〔Effect of the invention〕

The present invention is constructed as described above, and as described above, a member is provided for attaching a wire mesh or the like formed in a band shape having a groove portion having a U-shaped cross section, and the wire mesh is attached to the groove portion of the member. etc., and this installation was done by arranging the members in the axial direction along the outer circumferential surface of a ring formed in an annular shape, such as wire mesh etc. extending radially, and fixing them at regular intervals. It has now become possible to assemble a buried member for preventing slipping through a simple process. In this way, by providing a separate buried member for slip prevention, and setting the buried member in the tire mold and embedding it in the rubber body, slip resistance can be easily achieved. It has now become possible to mold a solid tire. In other words, there is no need to perform special processing on the base bund or cut it after embedding molding, which was the case in the past. etc. can be set accurately in the buried position.

In addition, in the present invention, the ring constituting the buried member has a diameter slightly larger than that of the baseband and is buried concentrically within the rubber body, so that the impact on the ground surface is absorbed by the ring. This is a solid tire that can be cushioned by the rubber material interposed between the baseband, and has superior cushioning properties compared to the conventional method of embedded molding with one end of wire mesh, wire, etc. attached to the baseband. I was able to obtain the following.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a solid tire according to the present invention, FIG. 2 is a cross-sectional view of the same side, and FIG. 3 is a structure showing the attachment of a wire mesh. 1...Solid tire, 1'...Rubber body, 2...
・Baseband, 3...Ring, 4・Installation is a component, 4
′...Groove portion, 5...Tread portion, 6...Wire mesh. Patent applicant: Aichi Taiani Gyo Co., Ltd. −− Agent: Patent attorney Toshio Tamakoshi −
2-1,-

Claims (1)

[Claims] (1) A ring formed in an annular shape, with a diameter slightly larger than that of the baseband, is buried concentrically within the rubber body, and a groove with a U-shaped cross section is formed on the outer peripheral surface of the ring. Attachment members formed in a band shape are arranged in the axial direction so that the grooves open outward and are fixed at regular intervals, while wire mesh or metal wires are attached to the grooves with their tips touching the tread surface. A method for manufacturing a solid tire for an industrial vehicle, which is made to extend in a radial direction so as to face the solid tire.