JP2020090053A - Apparatus for manufacturing tire rubber member - Google Patents

Abstract

To provide an apparatus for manufacturing a tire rubber member which can control positional deviation of a rubber strip in a transportation direction.SOLUTION: The invention is an apparatus for manufacturing a tire rubber member. It includes a roller 5 capable of rolling to a length of a rubber strip. A convex portion 10 protruding radially outward of the roller 5 is provided on an outer peripheral surface 5a of the roller 5. The convex portion 10 includes a first convex section 11 having a vertex 11t on a width centerline 5c of the outer peripheral surface 5a. The first convex section 11 includes a first portion 13 extending from the vertex 11t to one 5e side in the width direction of the outer peripheral surface 5a so as to incline to one side in a circumferential direction and a second portion 14 extending from the vertex 11t to the other 5i side of the outer peripheral surface 5a in the width direction so as to incline to one side in the circumferential direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to an apparatus for manufacturing a rubber member for tire.

The following Patent Document 1 describes a method for manufacturing a rubber member for a tire. The rubber member for a tire is formed by stacking rubber strips on a molding drum. On the surface of the rubber strip, a plurality of exhaust grooves extending in a direction intersecting the length direction of the rubber strip are arranged in parallel. Such an exhaust groove discharges air between the rubber strips that are superposed on each other, and enhances tire quality such as uniformity.

The exhaust groove is formed by a calendar roller that molds the rubber strip. The calendar roller is arranged on the upstream side of the forming drum, and a convex rib for forming the exhaust groove is provided on the outer peripheral surface thereof. The convex rib extends in a direction intersecting the length direction of the rubber strip.

Then, the exhaust groove is formed by the rubber strip passing on the outer peripheral surface of the calendar roller. As described above, in the manufacturing method of Patent Document 1 below, the exhaust groove is formed during conveyance to the forming drum.

JP, 2006-51711, A

However, in the manufacturing method of Patent Document 1, when the rubber strip separates from the calendar roller, a lateral force is generated in the rubber strip by the convex rib extending in the intersecting direction. For this reason, there is a problem that the rubber strip is transported while being displaced from the transport direction on the downstream side of the calendar roller.

The present invention has been devised in view of the above situation, and a main object of the present invention is to provide an apparatus for manufacturing a rubber member for a tire, which is capable of suppressing the displacement of the rubber strip in the conveying direction.

The present invention is an apparatus for manufacturing a rubber member for a tire, wherein a long rubber strip is wound on a drum to form a rubber member for a tire, which is a wound body of the rubber strip. The roller includes a roller capable of rolling in the length direction, the outer peripheral surface of the roller is provided with a convex portion protruding outward in the radial direction of the roller, and the convex portion has an apex on the width center line of the outer peripheral surface. And a first portion that extends from the apex toward one end in the width direction of the outer peripheral surface and inclines to one side in the circumferential direction, and extends from the apex to the other end side in the width direction of the outer peripheral surface. And a first ridge portion including a second portion that extends obliquely to one side in the circumferential direction.

In the tire rubber member manufacturing apparatus according to the present invention, it is preferable that the first ridge portion is formed in a substantially V shape or a substantially U shape.

In the tire rubber member manufacturing apparatus according to the present invention, it is desirable that a plurality of the first ridges be arranged in the circumferential direction.

In the tire rubber member manufacturing apparatus according to the present invention, it is preferable that the convex portion has a second convex portion that connects between the first convex portions that are adjacent to each other in the circumferential direction.

In the manufacturing apparatus for a rubber member for a tire according to the present invention, the second ridge portion is inclined toward the other side in the circumferential direction from the apex of the first ridge portion toward the one end side of the outer peripheral surface. It is desirable to include a third portion that extends and a fourth portion that extends from the apex toward the other end side of the outer peripheral surface while inclining to the other side in the circumferential direction.

In the tire rubber member manufacturing apparatus according to the present invention, it is desirable that the third portion and the fourth portion extend to both ends in the width direction of the outer peripheral surface.

In the tire rubber member manufacturing apparatus according to the present invention, the third portion and the fourth portion are from the apex of the first ridge portion to the first ridge portion adjacent on the other side in the circumferential direction. It is desirable to extend and terminate.

In the apparatus for manufacturing a rubber member for a tire according to the present invention, it is desirable that the first ridge portion be continuous with both ends of the outer peripheral surface in the width direction.

In the tire rubber member manufacturing apparatus according to the present invention, it is preferable that the convex portion is line-symmetric with respect to the width center line.

The tire rubber member manufacturing apparatus according to the present invention includes the convex portion, a pair of outer portions arranged on both sides in the width direction of the outer peripheral surface, and an inner portion sandwiched between the pair of outer portions, The protrusion height of the inner portion is preferably smaller than the protrusion height of the pair of outer portions.

In the apparatus for manufacturing a rubber member for a tire according to the present invention, it is desirable that the angle between the first portion and the second portion of the first ridge portion is 15 to 45 degrees.

In the apparatus for manufacturing a rubber member for a tire according to the present invention, it is preferable that the protrusion height of the convex portion is 0.5 to 1.5 times the thickness of the rubber strip.

In the tire rubber member manufacturing apparatus according to the present invention, the width of the convex portion is preferably 0.5 to 1.5 times the protrusion height of the convex portion.

An apparatus for manufacturing a rubber member for a tire according to the present invention includes a roller capable of rolling in the length direction of a rubber strip. The outer peripheral surface of the roller is provided with a convex portion that projects outward in the radial direction of the roller. The convex portion has a vertex on the width center line of the outer peripheral surface, and a first portion extending from the vertex toward one side in the circumferential direction toward one end side in the width direction of the outer peripheral surface, and the first portion, It includes a first ridge portion including a second portion that extends from the apex toward the other side in the width direction of the outer peripheral surface while inclining to one side in the circumferential direction.

As a result, in the rubber strip separated from the roller, lateral forces in opposite directions caused by the first portion and the second portion are generated, and these lateral forces are offset. Therefore, in the tire rubber member manufacturing apparatus of the present invention, it is possible to suppress the displacement of the rubber strip.

It is a perspective view of a manufacturing device of a rubber member for tires showing one embodiment of the present invention. It is a left half sectional view of the tire formed by the present invention. It is a perspective view of a rubber strip. It is a perspective view of the roller of this embodiment. It is a development view of the outer peripheral surface of the roller of the present embodiment. 5A is a cross-sectional view taken along the line AA of FIG. 5, and FIG. 6B is a cross-sectional view of a roller of another embodiment. It is a development view of the outer peripheral surface of the roller of other embodiment. It is a development view of the outer peripheral surface of the roller of further another embodiment.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of an apparatus 1 for manufacturing a rubber member for a tire (hereinafter, sometimes simply referred to as “manufacturing apparatus”) 1 according to the present embodiment. As shown in FIG. 1, the manufacturing apparatus 1 forms a rubber member G1 for a tire including a wound body of the rubber strip G by spirally winding and pasting the rubber strip G on the drum 4. Is. Such a manufacturing apparatus 1 constitutes, for example, a part of a production line for manufacturing a pneumatic tire (hereinafter, simply referred to as “tire”) T.

FIG. 2 is a sectional view of the tire T. As shown in FIG. 2, in addition to the cord layers such as the carcass A1 and the belt A2, the tire T includes a plurality of types of inner liner rubber Ga, sidewall rubber Gb, chafer rubber Gc, cushion rubber Gd, tread rubber Ge, and the like. It is composed of a rubber member. In the present embodiment, the tire rubber member G1 includes at least one kind of these rubber members.

As shown in FIG. 1, the manufacturing apparatus 1 includes, for example, a cylindrical drum 4 and a roller 5 that can roll in the length direction of the rubber strip G. Further, in the present embodiment, the manufacturing apparatus 1 further includes a rubber strip supply means 6 that sequentially supplies the rubber strip G while extrusion-molding it, and an applicator 7 that sends the rubber strip G to the drum 4 and attaches it. ..

The rubber strip supply means 6 of the present embodiment includes a rubber extruder 6a, upper and lower calendar rollers 6b and 6c disposed on the discharge side of the rubber extruder 6a, and downstream side of the upper and lower calendar rollers 6b and 6c. The guide roller 6d is provided. The rubber strip G is finished into a desired size by passing between the upper and lower calendar rollers 6b and 6c. The guide roller 6d guides the rubber strip G sent from the upper and lower calendar rollers 6b and 6c to the applicator 7, for example.

The applicator 7 of the present embodiment includes a plurality of guide rollers 7a and a conveyor belt 7b which is guided by the guide rollers 7a so as to be able to rotate. The applicator 7 receives the rubber strip G from the rubber strip supply means 6 on the conveyor belt 7b and attaches it to the outer peripheral surface of the drum 4. The drum 4, the rubber strip supply means 6 and the applicator 7 are not limited to such an aspect, and various known structures are adopted.

FIG. 3 is a perspective view of the rubber strip G. As shown in FIG. 3, the rubber strip G of the present embodiment is in the form of a long tape made of unvulcanized rubber, and its cross-sectional shape is line-symmetric with respect to the center line c in the width direction. It has a trapezoidal shape. In the present embodiment, the rubber strip G has a trapezoidal cross section in which the width of the lower surface (not shown) is larger than the width of the upper surface Gt. Such a rubber strip G can reduce the positional deviation on the applicator 7 in the conveying direction (the same as the length direction of the rubber strip G). The cross-sectional shape of the rubber strip G may be rectangular or have an arcuate upper surface as long as it is line-symmetrical as described above. In this specification, the lower surface of the rubber strip G is the surface of the applicator 7 that is in contact with the conveyor belt 7b, and the upper surface Gt is the surface that faces the opposite side of the lower surface.

Although not particularly limited, the rubber strip G preferably has a thickness t of 0.5 to 3.0 mm and a lower surface width w of about 5 to 25 mm.

As shown in FIG. 1, the roller 5 of the present embodiment is arranged on the conveyor belt 7 b of the applicator 7. The roller 5 is held movably up and down by an actuator such as an air cylinder (not shown). When the rubber strip G is conveyed on the conveyor belt 7b, the roller 5 is lowered by the actuator, and the outer peripheral surface 5a of the roller 5 and the upper surface Gt of the rubber strip G come into contact with each other.

In this embodiment, the roller 5 has a width W1 larger than the width w of the rubber strip G. The width W1 of the roller 5 is preferably about 1.1 to 2.5 times the width w of the rubber strip G.

In the present embodiment, the roller 5 is provided with a convex portion 10 that protrudes outward in the radial direction of the roller 5 on the outer peripheral surface 5a. As a result, on the upper surface Gt of the rubber strip G, the groove 30 (shown in FIG. 3) which is an inverted pattern of the convex portion 10 is formed. The groove 30 discharges the air in the tire rubber member G1 to improve the tire quality such as uniformity.

FIG. 4 is a perspective view of the roller 5. FIG. 5 is a development view of the outer peripheral surface 5 a of the roller 5. As shown in FIGS. 4 and 5, the protrusion 10 of the present embodiment includes the first protrusion 11 having the apex 11t on the width center line 5c of the outer peripheral surface 5a. The first ridge portion 11 of this embodiment includes a first portion 13 and a second portion 14. For convenience, the first ridge portion 11 is clearly indicated by a hatch.

In the present embodiment, the first portion 13 extends from the apex 11t toward the one end 5e in the width direction of the outer peripheral surface 5a while being inclined to one side in the circumferential direction (lower side in FIG. 5). In the present embodiment, the second portion 14 extends from the apex 11t toward the other end 5i in the width direction of the outer peripheral surface 5a while being inclined to one side in the circumferential direction. As a result, in the rubber strip G separated from the roller 5, lateral forces in opposite directions caused by the first portion 13 and the second portion 14 are generated, and these lateral forces are offset. For this reason, in the manufacturing apparatus 1 of the present embodiment, it is possible to suppress the displacement of the rubber strip G. Further, for example, when the first ridge portion 11 extends parallel to the width direction of the outer peripheral surface 5a, the groove 30 formed in the rubber strip G extends in the direction orthogonal to the length direction (conveying direction) of the rubber strip G. Formed (not shown). Such a groove 30 reduces the rigidity of the rubber strip G in the length direction. Further, the rubber strip G largely shrinks in the length direction. Therefore, when the first ridge portion 11 extends parallel to the width direction of the outer peripheral surface 5a, cracks or chips starting from the groove 30 are generated. In this respect, as in the present embodiment, the convex portion 10 including the inclined first portion 13 and the inclined second portion 14 suppresses the decrease in the rigidity of the rubber strip G in the lengthwise direction, and thus the rubber strip G is shrunk. Suppress cracks and chips. The first portion 13 may extend, for example, from the apex 11t toward the one end 5e in the width direction of the outer peripheral surface 5a toward the other side (upper side in FIG. 5) in the circumferential direction. Similarly, the second portion 14 may extend, for example, from the apex 11t toward the other end 5i in the width direction of the outer peripheral surface 5a while being inclined toward the other side in the circumferential direction. That is, the inclination direction of the first ridge portion 11 is not particularly limited with respect to the rotation direction of the roller 5.

In the present embodiment, the first ridge portion 11 is formed in a substantially V shape in which the first portion 13 and the second portion 14 extend linearly (the angle with respect to the width direction of the roller 5 is the same). Such a first ridge portion 11 serves to reduce the length of the groove 30 and smoothly discharge the air therein. The first ridge portion 11 has a substantially U-shape in which the first portion 13 and the second portion 14 each have a gradually decreasing angle with respect to the width direction from the one end 5e side or the other end 5i side toward the width center line 5c. It may be formed. Such a first ridge portion 11 enhances the rigidity of the apex 11t.

In the present embodiment, a plurality of first ridge portions 11 are arranged in the circumferential direction. The pitch P of the first ridges 11 is preferably about 10 to 30 mm, for example. Thereby, the air in the tire rubber member G1 can be effectively discharged.

The angle θ formed by the first portion 13 and the second portion 14 is preferably 15 to 45 degrees. If the angle θ is less than 15 degrees, the length of the groove 30 formed in the rubber strip G becomes large, and the air therein may not be smoothly discharged. If the angle θ exceeds 45 degrees, there is a possibility that cracks or chips starting from the groove 30 due to the shrinkage are likely to occur. From such a viewpoint, it is more preferable that the angle θ formed by the first portion 13 and the second portion 14 is 20 to 30 degrees.

The absolute value |θ1-θ2| of the difference between the angle θ1 of the first portion 13 with respect to the circumferential direction and the angle θ2 of the second portion 14 with respect to the circumferential direction is preferably 10 degrees or less, and more preferably 5 degrees or less. , And more preferably 0 degree. As a result, the lateral forces in the opposite directions caused by the first portion 13 and the second portion 14 are effectively canceled out, so that the displacement of the rubber strip G on the applicator 7 is further suppressed.

The first ridge portion 11 is connected to, for example, both ends 5e and 5i in the width direction of the outer peripheral surface 5a. Thereby, since the groove can be formed over the entire width of the rubber strip G, the air can be effectively discharged. In the present embodiment, the first portion 13 is connected to the one end 5e. The second portion 14 is connected to the other end 5i in the present embodiment.

In this embodiment, the convex portion 10 has a second convex portion 12 that joins between the first convex portions 11 that are adjacent to each other in the circumferential direction. The 2nd ridge part 12 raises the exhaust effect of the air in the rubber member G1 for tires.

The second ridge 12 of the present embodiment includes a third portion 15 and a fourth portion 16. The third portion 15 of the present embodiment extends from the apex 11t of the first ridge 11 toward the one end 5e side of the outer peripheral surface 5a inclining to the other side (upper side in FIG. 5) in the circumferential direction. The fourth portion 16 of the present embodiment extends from the apex 11t toward the other end 5i of the outer peripheral surface 5a while being inclined toward the other side in the circumferential direction. As described above, the third portion 15 and the fourth portion 16 extend from the apex 11t on the width center line 5c from which air is hard to be discharged, so that the air in the tire rubber member G1 can be effectively discharged. it can.

In the present embodiment, the third portion 15 and the fourth portion 16 extend from the apex 11t of the first ridge portion 11 to the adjacent first ridge portion 11 on the other side in the circumferential direction and terminate. As a result, the air in the groove 30 formed by the third portion 15 and the fourth portion 16 is discharged from the grooves 30 formed by the first ridge portions 11 on both sides of the groove 30. The air is discharged more effectively.

The convex portion 10 is line-symmetric with respect to the width center line 5c. As a result, the displacement of the rubber strip G is further suppressed. In this embodiment, the first portion 13 and the second portion 14 are line-symmetric with respect to the width center line 5c, and the third portion 15 and the fourth portion 16 are line-symmetric with respect to the width center line 5c. .. In the present embodiment, the third portion 15 is linearly connected to the second portion 14. In the present embodiment, the fourth portion 16 is linearly connected to the first portion 13.

FIG. 6A is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 6A, the convex portion 10 is sandwiched by, for example, a pair of outer portions 19 and 19 arranged on both sides of the outer peripheral surface 5 a in the width direction and a pair of outer portions 19 and 19. It is formed to include the inner portion 20. The protrusion height h2 of the inner portion 20 is preferably smaller than the protrusion height h1 of each outer portion 19. When the groove 30 is formed in the rubber strip G using the roller 5 as in the present embodiment, the width center line 5c side of the roller 5 has a larger pressing force on the rubber strip G than the both ends 5e, 5i side. Therefore, the depth of the groove 30 tends to increase. Therefore, by making the protruding height h2 of the inner portion 20 smaller than the protruding height h1 of each outer portion 19, the depth of the groove 30 can be made uniform in the width direction of the rubber strip G.

In the present embodiment, the outer portion 19 is formed of a portion of the first portion 13 on the one end 5e side and a portion of the second portion 14 on the other end 5i side. In the present embodiment, the inner portion 20 is formed of a portion of the first portion 13 on the width center line 5c side, a portion of the second portion 14 on the width center line 5c side, the third portion 15 and the fourth portion 16. The outer portion 19 and the inner portion 20 are not limited to such an aspect.

In order to effectively exhibit the above-mentioned action, it is preferable that the protrusion height h2 of the inner portion 20 of the present embodiment is 60% to 80% of the protrusion height h1 of each outer portion 19. Similarly, the width W2 of the outer portion 19 of the present embodiment in the width direction is preferably 15% to 40% of the width W1 of the roller 5.

The convex portion 10 includes an intermediate portion 21 between the outer portion 19 and the inner portion 20, the protruding height of which gradually decreases from the outer portion 19 toward the inner portion 20. Such an intermediate portion 21 serves to make the depth of the groove 30 more uniform.

The protruding height h of the convex portion 10 is preferably 0.5 to 1.5 times the thickness t of the rubber strip G. Thereby, the groove 30 having an appropriate depth can be formed in the rubber strip G while ensuring the rigidity of the rubber strip G, and the air of the tire rubber member G1 can be smoothly discharged. From such a viewpoint, it is more preferable that the protruding height h of the convex portion 10 is 0.75 to 1.3 times the thickness t of the rubber strip G. The protrusion height h of the convex portion 10 is the protrusion height h1 of the outer portion 19 which is the maximum height in the present embodiment.

The width Wa (shown in FIG. 5) of the convex portion 10 is preferably 0.5 to 1.5 times the protrusion height h of the convex portion 10. Thereby, the groove 30 having an appropriate width can be formed in the rubber strip G while ensuring the rigidity of the rubber strip G, and the air of the tire rubber member G1 can be smoothly discharged. From such a viewpoint, it is more preferable that the width Wa of the convex portion 10 is 1.0 to 1.5 times the thickness t of the rubber strip G.

In the present embodiment, the convex portion 10 has a substantially rectangular cross section. The cross-sectional shape of the convex portion 10 may be various known shapes such as a substantially U shape and a substantially V shape (not shown).

As shown in FIG. 6B, the protrusion 10 may have the same protrusion height h in the width direction. In such a mode, the groove 30 has a groove depth that is larger on the center line c side in the width direction of the rubber strip G than on both sides in the width direction. As a result, the air on the side of the center line c of the rubber strip G that is difficult to be discharged can be effectively discharged.

As shown in FIGS. 4 and 5, in the roller 5 of this embodiment, the convex portion 10 does not have a portion that is discontinuous in the circumferential direction of the roller 5. That is, the convex portion 10 is formed at any position in the circumferential direction of the roller 5 and at any position in the width direction thereof. As a result, when the outer peripheral surface 5a of the roller 5 and the rubber strip G come into contact with each other, the rubber strip G comes into contact with the convex portion 10 in either the lengthwise direction or the widthwise direction of the rubber strip G. Vibration is suppressed. Therefore, the roller 5 of the present embodiment suppresses the amount of vibration and reduces the occurrence of rattling, wear and the like of the bearings and the like constituting the manufacturing apparatus 1.

FIG. 7 is a development view of the outer peripheral surface 5a of the roller 5 according to another embodiment. The same components as those of the present embodiment shown in FIGS. 4 to 6 are designated by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 7, in the convex portion 10 of this embodiment, the third portion 15 and the fourth portion 16 respectively extend to the first convex streak portion 11 which is separated by two to the other side in the circumferential direction. There is. Such a roller 5 can more effectively discharge the air on the side of the center line c of the rubber strip G.

FIG. 8 is a development view of the outer peripheral surface 5a of the roller 5 according to still another embodiment. The same components as those of the present embodiment shown in FIGS. 4 to 6 are designated by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 8, in this embodiment, the third portion 15 extends from the apex 11t to one end 5e in the width direction of the outer peripheral surface 5a. In this embodiment, the fourth portion 16 extends from the apex 11t to the widthwise other end 5i of the outer peripheral surface 5a. The roller 5 of such an embodiment also suppresses the displacement of the rubber strip G.

Although the particularly preferred embodiments of the present invention have been described above in detail, the present invention is not limited to the illustrated embodiments and can be modified into various modes.

In order to confirm the effect of the present invention, an inner liner rubber, a tread rubber, and a sidewall rubber of a tire were formed using the manufacturing apparatus shown in FIG. 1, and a tire was manufactured including these. Then, the vibration amount of the roller at the time of manufacturing and the number of defects generated due to insufficient exhaust of air from the tire were obtained. The common specifications and test method are as follows.
Tire size: 245/45R18
Inner liner rubber rubber strip (width x thickness): 20 mm x 0.7 mm
Rubber strip of tread rubber (width x thickness): 14 mm x 1.2 mm
Sidewall rubber strip (width x thickness): 12mm x 0.9mm
Pitch of first ridge: 16mm
Convex part of Comparative Example 1: Only the first ridge part that joins both ends of the roller and is inclined at an angle of 25 degrees with respect to the width direction Convex part of Comparative Example 2: Joins both ends of the roller and an angle with respect to the width direction Only the first ridge having a 0 degree Comparative Example 3: No ridge

<Number of defective products>
100 tires were manufactured by using rollers each having a different protrusion angle θ. The tester visually confirmed the cross section and outer surface of each tire, and measured the number of defects due to air remaining inside the tire and the number of defects due to rubber flow on the outer surface of the tire. The results are shown by the number of lines, and the smaller the number, the better.

<Roller vibration amount>
The vibration (amplitude (mm)) of the roller at the time of manufacturing the tire was measured by a laser displacement meter. The result is shown as an average of 100 tires, and the smaller the value, the better.
The results are shown in Table 1.

As a result of the test, it can be confirmed that the number of defectives produced by the molding method of the example is smaller than that of the molding method of the comparative example. Even if the tire is measured as defective, the quality of the tire may be ensured.

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus 5 Roller 5a Outer peripheral surface 5c Width center line 5e One end 5i Other end 10 Convex portion 11 First convex ridge portion 11t Vertex 13 First portion 14 Second portion G Rubber strip G1 Tire rubber member

Claims (13)

A long rubber strip, a device for manufacturing a tire rubber member for forming a tire rubber member comprising a wound body of the rubber strip by winding on a drum,
Including a roller capable of rolling in the length direction of the rubber strip,
The outer peripheral surface of the roller is provided with a convex portion that projects outward in the radial direction of the roller,
The convex portion has a vertex on the width center line of the outer peripheral surface, and a first portion extending from the apex toward one end side in the width direction of the outer peripheral surface to be inclined to one side in the circumferential direction, A first ridge portion including a second portion extending from the apex toward the other end side in the width direction of the outer peripheral surface inclining to one side in the circumferential direction,
Equipment for manufacturing rubber components for tires. The apparatus for manufacturing a rubber member for a tire according to claim 1, wherein the first ridge portion is formed in a substantially V shape or a substantially U shape. The apparatus for manufacturing a rubber member for a tire according to claim 1, wherein a plurality of the first ridges are arranged in the circumferential direction. The said convex part is a manufacturing apparatus of the rubber member for tires of Claim 3 which has a 2nd convex part which connects between the said 1st convex part which adjoins in the circumferential direction. The second ridge portion has a third portion extending from the apex of the first ridge portion toward the other end in the circumferential direction toward the one end side of the outer peripheral surface and a third portion extending from the apex to the outer peripheral surface. The device for manufacturing a rubber member for a tire according to claim 4, further comprising a fourth portion that extends toward the other end side while being inclined toward the other side in the circumferential direction. The device for manufacturing a rubber member for a tire according to claim 5, wherein the third portion and the fourth portion extend to both ends in the width direction of the outer peripheral surface. The rubber for tires according to claim 5, wherein the third portion and the fourth portion extend from the apex of the first ridge portion to the first ridge portions adjacent to each other on the other side in the circumferential direction and terminate. Equipment for manufacturing components. The said 1st convex line|part is a manufacturing apparatus of the rubber member for tires in any one of Claim 1 thru|or 7 which follows the width direction both ends of the said outer peripheral surface. The said convex part is a manufacturing apparatus of the rubber member for tires in any one of Claim 1 thru|or 8 which is line symmetrical with respect to the said width centerline. The convex portion includes a pair of outer portions arranged on both sides in the width direction of the outer peripheral surface, and an inner portion sandwiched between the pair of outer portions,
The apparatus for manufacturing a rubber member for a tire according to claim 1, wherein a protrusion height of the inner portion is smaller than a protrusion height of the pair of outer portions. The said 1st convex part is a manufacturing apparatus of the rubber member for tires in any one of Claim 1 thru|or 10 with which the angle which the said 1st part and the said 2nd part make is 15-45 degrees. The apparatus for manufacturing a rubber member for a tire according to any one of claims 1 to 11, wherein the protruding height of the convex portion is 0.5 to 1.5 times the thickness of the rubber strip. 13. The tire rubber member manufacturing apparatus according to claim 1, wherein a width of the convex portion is 0.5 to 1.5 times a protruding height of the convex portion.

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