JPS62299413A - Slip stopper for vehicle tire and manufacture thereof - Google Patents

Abstract

PURPOSE:To improve the anti-slip performance and the durability, by crossing two U-shaped metals perpendicularly and combining reversely into a double U-shaped burrying anti-slip metal then fitting a rubber string having a reinforcing fiber core and vulcanizing integrally. CONSTITUTION:A double U-shaped burrying anti-slip metal 5 is formed by bending a steel rod into an oval ring then bending furthermore into a U-shape. Thereafter, non-vulcanized rubber strings 3 having reinforcing fiber cores 4 are fitted between semi-circular upward projections (a), (a') and between semi-circular downward projections (b), (b') and crossed while holding the anti-slip metal 5 between them thus forming a non-vulcanization mesh rubber band having a cross section. Then it is placed in a vulcanization metal mold and vulcanized. With such arrangement, the anti-slip metal 5 can be prevented from falling out during travel resulting in the improvement of the anti-slip performance and the durability.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention The present invention relates to an anti-slip device for automobile tires and a method for manufacturing the same, for preventing automobile tires from slipping on snowy, frozen, muddy, etc. road surfaces. It is something.

In other words, in order to prevent noise and damage to the road surface, anti-slip devices made of rubber or plastic for automobile tires are used instead of the conventional metal chains.
It has excellent effects on compacted snow. However, on a frozen road surface, the vehicle may slip, which is dangerous, so nail-shaped spikes or other anti-slip metal fittings are attached to improve this anti-slip performance.

In particular, the present invention aims to improve this anti-slip fitting to improve its anti-slip performance and durability, and to provide a simple and inexpensive anti-slip fitting for automobile tires and a method for manufacturing the same.

Conventionally, the following types of spikes or anti-slip fittings have been used and proposed as anti-slip devices for automobile tires made of rubber or plastic.

Conventional method 1. (Utility Model Publication No. 59-14247): A thumbtack-shaped spike is attached to each intersection of a mesh mold, a string-like core material is stretched inside the mold to form a mesh, and A coating material such as synthetic rubber is filled on the mesh, and at the same time it is press-molded, it is vulcanized and molded to create an anti-slip device for automobile tires with spikes fixed to the intersections and protruding from the mesh core material. obtain.

Conventional method 2: Nail-like spikes or the like are buried in the intersections or between the intersections of the elastic mesh bands in a mold at the same time as the molding, to obtain a protruding anti-slip device for automobile tires.

Conventional method 3. (Utility Model Application No. 52-102607): A hole is made at the intersection of the meshes, passing through from the front to the back, and a nail-like spike is inserted into this hole from the back to the front to protrude, and is fixed to an automobile tire. What to get the anti-slip device for.

Conventional method 4: The same nail-like spikes as used for spiked tires are used in the same manner, that is, holes with the desired diameter and depth are drilled from the surface at the intersections of the mesh rubber bands or in the rubber between the intersections, and a spike driving machine is inserted into these holes. This is an anti-slip device for automobile tires that uses embedded spikes to protrude.

Conventional method 5. (Japanese Patent Application Laid-Open No. 51-64207): A non-slip device for automobile tires in which the diagonal line in one direction of the intersection of mesh bands is wrapped in an oval shape and a non-slip metal fitting made of steel wire is caulked. .

However, the conventional methods proposed and implemented have the following drawbacks.

Conventional method 1. In , it is difficult to fix the spikes in accurate positions in a vulcanization mold with a length of about 2 m at high temperatures while assembling a core material with a length of 15 to 20 m in a mesh, and on top of this mesh, Furthermore, the coating is inefficient due to the labor involved in filling it with rubber. In addition, in order to efficiently perform mesh assembly work,
When an unvulcanized rubber cord containing a reinforcing core material is used, there are disadvantages such as the spikes not being fixed to the core material and the disadvantages that if the spike position is even slightly shifted, the product will be defective and the mold will be damaged.

Conventional method 2. If the spikes are not placed in the correct position within the mold, the mold will be damaged, and the elastic body will stretch while the car is running, causing the spikes to fall off.

Conventional method 3. The drawback is that while the car is running, the spikes are squeezed out by the pressure of the tires and the road surface and fall off from the back side.

Conventional method 4. Spikes for spiked tires have a height of 10.5 mm to prevent them from falling off. However, this has the disadvantage that the thickness of the mesh band becomes excessively large, and that the spikes may fall off unless the area where the spikes are to be driven is excessively reinforced.

The nail-shaped hard spikes used in Conventional Methods 1 to 4 are effective only on hard, smooth road surfaces, that is, frozen road surfaces. Furthermore, since it is hard and has a small cross-sectional area, it acts as a point load on the road surface, causing significant wear and tear on the road surface. In addition, in order to bury a nail-like object in an elastic body so that it does not fall off, it is difficult to bury the nail-like object in the elastic body. There is a drawback that you will not be able to grasp the road surface.

Conventional method 5. It has the advantages of being easy to install, having a high anti-slip effect, causing little damage to the road surface, and not falling off even when subjected to excessive stress.However, if soft metal is used, it will wear out quickly and fall off. If a hard metal is used, the strain caused by bending it into an elliptical shape will cause metal fatigue, and this will overlap with the metal fatigue due to repeated stress during running, causing it to fall off quickly. Even if you select a metal with appropriate hardness, it will only reach 150k on a dry road surface.
It has the disadvantage that it falls off at m~25Qkm.

The present invention improves the drawbacks of the conventional method, and provides an automobile tire that is inexpensive with less effort, does not fall off during running, has excellent wear resistance, is durable, and has an anti-slip metal fitting that has an excellent anti-slip effect. The present invention aims to provide a non-slip device and a method for manufacturing the same.

Noting that the conventional method has the above-mentioned drawbacks, the present inventors completed the present invention as a result of intensive research.

As an embodiment of the present invention can be seen in the drawings, the present invention provides a mesh rubber band having a circumferential length approximately of the tire to be mounted, and a through hole at the end of each mesh on both side edges of the mesh rubber band. Or, in the anti-slip device for automobile tires, comprising a rope for each tightening for attaching and fixing the mesh rubber band along the circumference of the tire through a through hole of a metal fitting attached to the end part, On the surface of the mesh intersection of the mesh rubber band, there are two upward semicircular protrusions formed by bending approximately half of an oval ring itself formed by bending round steel into a U shape, and two downward semicircular protrusions perpendicular to these. A rubber cord with a reinforcing fiber core is fitted vertically orthogonally to a double U-shaped embedded anti-slip metal fitting having two semicircular protrusions, and the two semicircular protrusions of the anti-slip metal fitting are integrally vulcanized and molded. It is characterized by the provision of rubber protrusions each containing a built-in rubber protrusion. That is, first, the intersections forming the mesh of the mesh rubber band, which is the base of the anti-slip device for automobile tires, are coated with the lines shown in FIG. 1a.
It is obtained by bending a round steel having a diameter of 2 to 4 mm as shown in FIG. 1b to form an oval ring, and further bending this into a U-shape.

The greatest feature is that slips on frozen road surfaces are prevented by using the anti-slip fitting 5 having two upward semicircular protrusions ga and a' and two downward semicircular protrusions perpendicular to these protrusions b'. This is what I did.

In addition, as shown in FIGS. 2 and 6, between the upward semicircular protrusions a and a' of the anti-slip fitting 5, and between the downward semicircular protrusions a and a',
An unvulcanized rubber cord 3 containing a reinforcing fiber core 4 is fitted between b' and an unvulcanized mesh rubber band is prepared in advance, having an intersecting part with a non-slip fitting 5 interposed from above and below. Next, this is placed into a curved rubber band vulcanization mold which has a recessed part from which the heads of the semicircular protrusions a and a' of the anti-slip fitting 5 protrude at one of the mesh intersections of the vulcanization mold. Then fit together and vulcanize.

As shown in FIGS. 3a, 3b, and 4, the anti-slip metal fittings 5 are embedded in the vulcanized rubber 2 to surround the intersecting reinforcing fiber cores 4 from above and below at the intersecting parts of the mesh to prevent slipping. Rubber protrusion 6 that incorporates the heads of semicircular protrusions a and a' of metal fitting 5
To manufacture an anti-slip device for automobile tires, which has a mesh rubber band as a base material.

That is, the present invention also provides a mesh rubber band having approximately the circumference length of the tire to be mounted, and metal fittings attached to the through holes or ends of each mesh on both side edges of the mesh rubber band. A method for manufacturing an anti-slip device for automobile tires comprising: a rope for attaching and fixing the mesh rubber band along the circumference of the tire through a through hole; and an oval ring made of round steel; Forms a double U-shaped embedded non-slip fitting having two upward semicircular protrusions formed by bending itself approximately in half into a U-shape, and two downward semicircular protrusions at right angles thereto. Then, using an unvulcanized rubber cord with a reinforcing fiber core extruded using an extruder equipped with a crosshead, use a preparation mold and a medium vulcanization mold to insert it between the two semicircular protrusions on the top and bottom of the anti-slip fitting. The intersecting portions of the band-like mesh are formed by sandwiching them approximately in a criss-cross shape, and then, using a pair of upper and lower vulcanization molds, the semicircular protrusions of the mesh intersecting portions are embedded and rubber protrusions are formed.
It is characterized by heat vulcanization molding of the entire band-like mesh and the side edge through holes.

Since the anti-slip fitting 5 used in the present invention is made of round steel, the molding yield is good, and the manufacturing method is simple and the mass production method has been established, so it is inexpensive.

Since there are many types of round steel, it is possible to freely select a material that is suitable for quenching to make it highly hard and wear resistant after being formed into a metal fitting. In addition, since it is a semicircular protrusion even if it is hard,
Less damage to the road surface.

Furthermore, since the two reinforcing fiber cores 4 intersecting with the anti-slip metal fittings 5 have a structure in which they surround each other, they will not fall off due to strong stress when the car is running. Therefore, the designed thickness of the mesh rubber band can be reduced, so that the running stability of the vehicle is not impaired.

In addition, in the process of preliminary preparing the mesh rubber band, the unvulcanized rubber string 3
are fitted at predetermined positions between the semicircular protrusions a and a' and between the semicircular protrusions a and b' of the anti-slip fitting 5, so that the mesh rubber band with the anti-slip fitting 5 can be manufactured with less effort and at low cost. As described above, the present invention has many advantages.

The rubber used in the present invention may be either natural rubber or synthetic rubber. Rubber chemicals such as vulcanizing agents are mixed and used. In particular, a crushed rubber compound containing a reinforcing agent such as carbon black and having good strength, abrasion resistance, weather resistance, and cold resistance is used.

Reinforcement [The core material may be any natural or synthetic fiber, but polyamide, polyester, and aramid fibers, which have excellent heat resistance and strength, are preferred, and in order to improve adhesion to rubber, they may be treated with resorcin, formalin, or latex. The ones that have been tested are particularly good.

An efficient method for producing an unvulcanized rubber string with a reinforcing fiber core is to use an extruder to extrude the compounded rubber into a string of a desired shape, and simultaneously extrude the reinforcing fiber core into the center of the string.

The fixing rope that is passed through the string passing holes at both edges of the rubber band is a natural or synthetic fiber braid, a metal wire coated with synthetic lit fat, or a rubber string.

The round steel used in the present invention has a diameter of 2 to 4 mm, and is made of a material that can be hardened to obtain desired hardness and wear resistance.

In order to prevent rust and improve adhesion to rubber, it may be plated with brass or galvanized, or it is preferable to use a metal-rubber adhesive, such as the product name Chemiloc, coated and dried. Get results.

The present invention will be explained below with reference to Examples and drawings.

Example 1 Step 1 As shown in FIGS. 1a and 1b, a spring steel wire having a diameter of 3 mm is bent to form an oval ring, which is then further bent into a U-shape.

A non-slip fitting 5 is formed having two upward semicircular projections a and a' and two downward semicircular projections b' at right angles thereto. This is hardened to a Picchus hardness of approximately 650. Next, after degreasing this surface, undercoat the product name Chemilock 205 with a rubber-to-metal adhesive and dry it.
Top coat with Chemiloc 220 and dry.

The second step is to knead a compounded rubber with high strength, wear resistance, and cold resistance.
This is rolled into a ribbon that is fed to an extruder.

3rd step: The ribbon-shaped compounded rubber is supplied to the screw of an extruder equipped with a crosshead, and at the same time, a nylon core treated with resorcinol, formalin, and latex is supplied from the crosshead to obtain a reinforcing fiber core of a predetermined shape and size. A vulcanized rubber string 3 is molded.

Fourth step: A preparation die 10 shown in a partially perspective view in FIG. 6 is used, which has approximately the length of the outer circumference of the tire. The mesh-like groove of the preparation mold 10 has sufficient dimensions in both depth and width so as to loosely accommodate the unvulcanized rubber string 3. A medium vulcanization mold 10 consisting of a core metal support part 9 to which a core metal 8 is fixed and an outer frame 7 is placed around the outer periphery of the preparation mold 11, and a mesh-like concave groove is formed at one end of the preparation mold 11. The above-mentioned unvulcanized rubber string 3 is attached and fitted inside, and the ends of both edges are hooked onto the core bar 8 of the medium vulcanization mold 10, turned over, and attached into the continuation groove. This is repeated in sequence, and when it moves back and forth twice over the surface of the preparation mold 11, an unvulcanized mesh rubber band of a predetermined shape is knitted.

During this work, the non-slip fitting 5 is attached after the unvulcanized rubber cord 3 passes through the designated intersection for the first time, and the downward semicircular projection of the non-slip fitting 5 is made at this specified intersection, b' are attached by holding the unvulcanized rubber string 5 between them so that they fit together. Also, when the unvulcanized rubber cord 3 crosses this intersection for the second time, the two upward protrusions a of the anti-slip fitting 5 that have already been attached.

The unvulcanized rubber string 3 is pushed from above and fitted between a' and passed through.

In this way, each intersection of the mesh rubber band with the non-slip metal fittings 5 knitted into the concave groove of the preparation mold 10 is brought into close contact with a crimping machine having claws for crimping, and then removed from the preparation mold 11. An unvulcanized mesh rubber band with anti-slip fittings 5 attached to a vulcanization mold 10 at predetermined intersections is knitted.

This unvulcanized mesh rubber band is prepared in advance. In this process, the middle vulcanization mold IO can be used for the upper and lower pairs of upper and lower molds used in the next vulcanization molding process, and by holding multiple pieces or more during the preforming process, the work can be done more efficiently. .

5th step A band-shaped mesh, a concave groove forming the rope passage hole 13' on both edges of the mesh, a recess for accommodating the semicircular protrusion of the anti-slip fitting 5 at the predetermined intersection, and medium vulcanization. A lower vulcanization mold having a groove for accommodating the core metal 8 of the mold 10 and the core support part 9, and a pair of grooves forming the rope passage holes 13' on both edges of the mesh. and an upper vulcanization mold having a groove for accommodating the core metal of the middle vulcanization mold 10 and the core support part.

The lower vulcanization mold is surrounded by the outer frame 7 of the middle vulcanization mold 10 with the unvulcanized rubber mesh rubber band preformed in the previous step, and the unvulcanized mesh rubber band, the core bar 8 and the core metal support are placed. 9 and are respectively arranged and fitted into the grooves of the lower vulcanization mold.

Next, an upper vulcanization mold is placed on top of this, fitted, and vulcanized by applying pressure and heating.

After vulcanization molding in the pre-sixth step, the upper and lower vulcanization molds are opened and the vulcanized mesh rubber band 1 is removed from the middle vulcanization mold 10 with the vulcanized mesh rubber band 1 attached. The mesh rubber band 1 shown in the partial perspective view has a rope passage hole 13 and a connecting fitting passage hole 15 at both edges of the mesh, and a third
As shown in Figures a, 3b, and 4, a non-slip metal fitting 5 is attached to the mesh intersection with a rubber protrusion 6 incorporating two semicircular protrusions of the anti-slip metal fitting 5 at the mesh intersection. To obtain a non-slip device for an automobile tire, the mesh rubber band 1 of the present invention is integrally embedded.

As a result, it is possible to efficiently and inexpensively manufacture an anti-slip device for automobile tires in which an anti-slip metal fitting with excellent functions not found in conventional products is embedded integrally in the rubber at mesh intersections.

As shown in FIG. 5, the anti-slip device for automobile tires made of a mesh rubber band according to the present invention is tightened by a rope 14, a coupling insertion fitting 16, a coupling hook fitting 17, and the like, as shown in FIG. It can be easily attached to the tire 20 using the rope hook fitting 18 and the rubber rope 19.

The present invention has the following effects.

(1) Since the anti-slip metal fittings are made by bending round steel, the yield of steel material is high, and since the mass production method has been established for making metal chains, it can be obtained at low cost.

(2) Since there are many types of round steel materials, it is possible to increase the hardness and improve wear resistance by quenching after forming into metal fittings.

(3) The anti-slip metal fittings and the crossed reinforcing fiber cores have a structure in which they surround each other, and are embedded in strong rubber and strongly bonded to the rubber, so they can withstand severe stress while the car is running. , never fall off.

(4) Since the anti-slip metal fittings are strongly bonded to the rubber and embedded in the rubber, there is little wear. Furthermore, even if the semicircular protrusions are worn out, they act as four nail-like spike metal fittings, exhibiting an anti-slip effect, and will not fall off.

(5) Since the anti-slip metal fittings are semicircular protrusions, they are less likely to damage the road surface like nail-like spikes.

(6) From effects (3) and (4), the design height of the mesh rubber band can be lowered, so cars equipped with this have good running stability.

(7) In the process of preforming the mesh rubber band, it is attached to the unvulcanized rubber string at the predetermined intersections by fitting the semicircular protrusions a, a', and b' of the non-slip fitting. , Installation requires less man-hours and can be manufactured at low cost. In this way, it has many excellent effects not found in conventional products.

[Brief explanation of the drawing]

FIG. 1a is a perspective view showing a non-slip fitting used in an embodiment of the present invention, FIGS. 1b and 1c are sectional views of FIG. 1a, and FIG. FIG. 3a is a perspective view showing a main part of an unvulcanized mesh rubber band, FIG. 3b is a sectional view of FIG. 3a, and FIG. FIG. 5 is a perspective view showing a part of a mesh rubber band obtained according to an embodiment of the present invention, FIG. 5 is a perspective view of a product according to an embodiment of the present invention mounted on an automobile tire, and FIG. FIG. 2 is a partial perspective view showing the structure of a pre-formed unvulcanized mesh rubber band in one embodiment. 1... Vulcanized mesh rubber band 2... Vulcanized rubber 3... Unvulcanized rubber string 4.
... Reinforcement fiber core 5 ... Anti-slip fitting, aa'bb' semicircular protrusion 6
...Rubber protrusion 7 with built-in semicircular protrusion of anti-slip fitting
... Outer frame 8 ... Core metal 9 ... Core metal support part 10 ... Medium vulcanization mold 11 ... Preparation mold
12... U-shaped entwined part 13... Rope passing hole 13'... Rope passing hole part 14... Tightening with rope 15... Connecting fitting passing hole 16...
Connection insertion fitting 17... Connection hook fitting 18...
Rope hook fitting 19...Rubber rope 20...Tire Figure 1a Figure 1b Figure 1c Figure 3a Figure 3b Figure 6 [) Letter of amendment to the Drop Proceedings September 16, 1988 Commissioner of the Patent Office Black 1) Ming a Hit 1, Indication of the case Patent Application No. 141357 of 1988 2, Name of the invention Anti-slip device for automobile tires and its manufacturing method 3, Person making the amendment Relationship with the case Patent applicant Hayakawa Rubber Co., Ltd. 4. Agent 1, correct the space between lines 4 on page 1 to 9 on page 3 of the specification as follows. [2.Claim 1, a mesh rubber band having approximately the circumference length of the tire to be mounted, and a mesh rubber band attached to the through holes or ends of the ends of each rope on both side edges of the mesh rubber band. A non-slip device for an automobile tire comprising a rope for attaching and fixing the mesh rubber band along the circumference of the tire through a hole in the metal fitting, and a mesh intersecting rope of the mesh rubber band. On the surface of the ring, there are two upward semicircular protrusions formed by bending the oval ring itself, which is formed by bending round steel, into a U-shape, and two downward semicircular protrusions that are perpendicular to these. A double U-shaped embedded anti-slip metal fitting having a double U-shaped embedded anti-slip metal fitting is integrally vulcanized and molded by fitting rubber strings with a reinforcing fiber core vertically perpendicularly to each other, and incorporating two semicircular protrusions of the anti-slip metal fitting. An anti-slip device for automobile tires characterized by having protrusions. 2. The anti-slip tool for automobile tires according to claim 1, wherein the round steel has a diameter of 2 to 4 sx. 3. Through a mesh rubber band having approximately the circumference length of the tire to be installed, and through holes at the ends of each mesh on both sides of the mesh rubber band or through holes in metal fittings attached to the ends, In the method for manufacturing an anti-slip device for automobile tires, which consists of ropes for each tightening rope for attaching and fixing the mesh rubber band along the circumference of the tire, the oval ring itself made of round steel is cut in half. A double U-shaped embedded non-slip fitting is formed, which has two upward semicircular protrusions bent into a U-shape and two downward semicircular protrusions at right angles to the semicircular protrusions, and is equipped with a cross head. Using an unvulcanized rubber cord with a reinforcing fiber core extruded in an extruder, use it to sandwich it in a roughly crisscross pattern between the two semicircular protrusions on the upper and lower sides of the anti-slip fitting. A belt with a part. month]≦El molding, and then heat radiation vulcanization molding of the entire band-like mesh together with the rubber protrusions embedded in the semicircular protrusions at the mesh intersections is performed using a pair of upper and lower vulcanization molds. A method for manufacturing an anti-slip device for automobile tires. 4. The method for manufacturing an anti-slip device for automobile tires according to claim 3, wherein the diameter of the round steel is 2 to 4 mm. "2, Specification page 10, lines 16 to 17
Delete "and middle vulcanization mold" in the line. 3. In lines 18 to 19 of page 10, ``forming the intersections of the band-like meshes'' is corrected to ``preparing and forming the band-like meshes having the crossed intersections.'' 4. Delete "and side edge through hole" in the second line of page 11. 5, page 17, line 12 [Can be constructed. ], add the following. ``Furthermore, in the above-mentioned embodiment, since the mesh rubber band has rope through holes 13 and connecting fitting through holes 15 on both edges of the mesh rubber band, the medium vulcanization mold 10 is used. Preparation and vulcanization are carried out almost in accordance with the above process using a preparation mold and upper and lower vulcanization molds without using a sulfur mold, and later the rope fittings etc. are attached to a mesh rubber band. It goes without saying that by attaching the anti-slip metal fittings to both edges of the line, it is possible to efficiently and inexpensively manufacture an anti-slip fitting for automobile tires in which the anti-slip metal fittings are integrally embedded in the rubber at the line intersection.

Claims (1)

[Scope of Claims] 1. A mesh rubber band having approximately the circumference of the tire to be mounted, and a mesh rubber band attached to the through holes or ends of the ends of each mesh on both side edges of the mesh rubber band. An anti-slip device for automobile tires comprising respective tightening ropes for attaching and fixing the mesh rubber band along the circumference of the tire through the through holes of the metal fitting, wherein the mesh rubber band is attached to the surface of the mesh intersection of the mesh rubber band. , having two upward semicircular protrusions formed by bending an oval ring itself formed by bending round steel into a U-shape, and two downward semicircular protrusions at right angles thereto. The heavy U-shaped embedded anti-slip metal fitting is provided with rubber protrusions that are vertically perpendicular to the top and bottom and are integrally vulcanized and molded by fitting rubber cords with reinforcing fiber core into them, each incorporating the two semicircular protrusions of the anti-slip metal fitting. An anti-slip device for automobile tires characterized by: 2. The anti-slip tool for automobile tires according to claim 1, wherein the round steel has a diameter of 2 to 4 mm. 3. Through a mesh rubber band having approximately the circumference length of the tire to be installed, and through holes at the ends of each mesh on both sides of the mesh rubber band or through holes in metal fittings attached to the ends, In the method for manufacturing an anti-slip device for automobile tires, which comprises the above-mentioned mesh rubber band and respective tightening ropes for attaching and fixing the mesh rubber band along the circumference of the tire, the oval ring itself made of round steel is cut into approximately half U. A double U-shaped embedded non-slip fitting is formed, which has two upward semicircular protrusions bent into a letter shape and two downward semicircular protrusions at right angles to the semicircular protrusions, and an extruder with a crosshead. An unvulcanized rubber cord with a reinforcing fiber core extruded in the mold is sandwiched in a roughly crisscross pattern between the two semicircular protrusions on the top and bottom of the anti-slip fitting using a preparation mold and a medium vulcanization mold. Then, using a pair of upper and lower vulcanization molds, the semicircular protrusions of the mesh intersections are formed with rubber protrusions embedded therein.
A method for manufacturing an anti-slip tool for automobile tires, which comprises heating and vulcanizing the entire band-shaped mesh and side edge through-holes. 4. The method for manufacturing an anti-slip device for automobile tires according to claim 3, wherein the diameter of the round steel is 2 to 4 mm.