JP2002225151A - Method for manufacturing tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a tire by which the tire can be manufactured at a low cost, considering the non-necessity to form a tire forming mold in a round annular shape because of its high manufacturing cost and also form a new mold each time the outside diameter of a wheel differs. SOLUTION: A straight line tire forming member 24 of a continuous length is formed using an almost straight line mold of a continuous length and then is cut to the specified length. In addition, the ends are joined together to form the tire 5 of a specified outside diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a rice transplanter,
The present invention relates to a method of manufacturing a tire used for a wheel (agricultural wheel) used for an agricultural machine such as a tractor, a cultivator, and a transplanter.

[0002]

2. Description of the Related Art In an agricultural wheel, a spoke protrudes radially outward from a boss at the center of the wheel, and is formed in a circular ring shape with a pipe material on the radially outer end side of the spoke. There is one in which a rim is fixed and a tire made of a solid rubber tire is fixed to the rim. In this agricultural wheel, a mold for forming a tire is constituted by a circular annular split mold, a rim is inserted into the mold, and a rubber material is injected into a cavity in the mold to add the rim. Sulfuration fixes the tire to the rim.

[0003]

In the agricultural wheel, since the tire is formed of rubber and the rim is formed of metal (iron), when the used wheel is discarded, the tire and the rim are not disposed. However, in the conventional wheel, since the tire is firmly bonded to the rim by baking, it is difficult to separate the two, it cannot be discarded, and the used wheel is Left unstacked,
It is becoming an environmental problem. Therefore, in order to solve this problem, while forming the rim in an annular shape, a tire is formed separately from the rim, and the rim covering portion of the tire, which covers the rim, is circumferentially attached to the rim covering portion. The rim storage hole formed over the rim is divided into two by a dividing surface along the circumferential direction so as to be divided into two, and the rim is arranged between the dividing surfaces of the rim covering portion, and the divided surfaces are overlapped. ,
It has been considered that the rim is accommodated in the rim storage hole in a non-adhesive state, thereby facilitating separation of the used wheel from the tire and the rim.

[0004] Incidentally, a circular annular mold has a problem that the production cost per surface is high, and if the tire is formed by vulcanization molding with a circular annular mold, the production cost is high. In addition, a plurality of wheels having different outer diameters are formed depending on the size of a vehicle body of a machine to be used, and the like. When a wheel is formed by a circular annular mold, one mold is required for each different wheel outer diameter. For example, taking a wheel used as a front wheel of a riding type rice transplanter as an example, the outer diameter of the wheel is 500 mm, 550 mm, 600 m
m, 620 mm or 650 mm, 5 mold surfaces are required.

[0005] Further, since one side of the mold is expensive, manufacturing a mold for molding a tire one by one for each wheel outer diameter has a problem that the manufacturing cost is high.
The present invention has been made in view of the above circumstances, and has as its object to provide a method of manufacturing a tire having a low manufacturing cost.

[0006]

The technical means taken by the present invention to solve the technical problem is to form a long and substantially linear tire forming member, and connect the end portions of the tire forming member to each other. A tire having a predetermined outer diameter is formed by joining. Also, other technical means,
Forming a long ended tire forming member, cutting the tire forming member to a predetermined length, and joining end portions together to form a tire having a predetermined outer diameter. I do.

Another technical means is to provide a tire forming member having a predetermined length by adding a base metal die having a substantially linear shape, and adding a base metal die having an appropriate length to the base metal die. A tire having a predetermined outer diameter is formed by joining end portions of a tire forming member formed by the mold. Another technical means is characterized in that a plurality of short tire components are formed, and the tire components are joined together to form a tire. Further, the joining portions may be joined by adhesion.

[0008] In addition, the method for producing a tire includes:
A rim covering portion for covering the rim is formed in a divided shape by divided surfaces along the circumferential direction, and a storage recess for accommodating the rim is formed in each divided surface to hold the rim between the divided surfaces. It is good to use for the method of manufacturing the tire which has.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 2, 3 and 4, 1
Is a wheel (agricultural wheel) used for an agricultural machine such as a rice transplanter, a tractor, a cultivator, and the like.
It is mainly composed of a wheel main body 2 on the outer peripheral side of the wheel 1, a wheel main body 3 on the inner peripheral side, and a connecting means 4 for connecting the wheel main body 2 to the wheel main body 3. The wheel body 2 includes a circular annular rim 6 and a circular annular tire 5 (solid rubber tire) formed of a rubber-like elastic body that covers (embeds) the rim 6 over the entire circumference. The rim 6 is provided buried in the tire 5 and is used as a core material of the tire 5.

The rim 6 is formed by forming a pipe made of metal or hard resin having a circular cross section into a circular ring shape. The rim 6 may be a non-circular pipe material such as a square pipe material, a solid rod material, or the like. Tire 5 has rim 6
Is provided as a buried state, and a circumferential rib 8 and a grounding lug 9 are integrally provided to protrude radially outward from an outer peripheral side (ground surface side) of the tire main body 7. ing.

The tire 5 may be provided with a blade lug which protrudes relatively largely outward in the left-right direction. The wheel body 3 is disposed at the center of the wheel 1 and is mounted on an axle of a rice transplanter or the like, and a plurality of spokes (supports) radially projecting radially outward from the boss 14. And a reinforcing plate 16 fixed to the spokes 15 and the bosses 14 by welding or the like. Note that the wheel body 3 may include a boss 14 and a disk (support) extending outward from the boss 14 in the wheel radial direction.

The spokes 15 are made of a pipe material, and as shown in FIG. 5, the outside of the spokes is crushed so as to be flat, and a mounting stay 17 is provided on a side surface of the flat portion 15a. It is fixed by welding or the like so as to protrude radially outward from the flat portion 15a. As shown in FIGS. 4 to 6, a rim storage hole 11 having a circular cross section substantially matching the cross sectional outer shape of the rim 6 is provided in (closer to the inner periphery of) the tire main body 8.
Is formed along the circumferential direction and over the entire circumference, and the rim 6 is housed in the rim housing hole 11 in a state where the rim 6 is not bonded to the elastic body constituting the tire 5 (non-bonded state). Thus, the wheel main body 2 is configured.

The wheel main body 2 is formed as follows. The tire 5 is formed separately from the rim 6. To form the tire 5, first, as shown in FIG. 1A, a long, substantially linear mold 27, which will be described later, is used. A linear tire forming member 24 is formed. Next, as shown in FIG.
Is cut to a predetermined length, and thereafter, as shown in FIG. 1 (c), the end portions of the tire forming member 24 cut to a predetermined length are joined together or formed by a mold 27. By joining the end portions of the tire forming member 24 having the same length, a circular annular tire 5 having a predetermined outer diameter is formed.

The end portions (joining portions 26) of the tire forming member 24 are adhered to each other by, for example, an adhesive. Further, the joining portion 26 may be joined using a joining member / joining device made of metal or resin or the like, for example, by a joining device 25 having a turnbuckle structure as shown in FIG. In FIG. 11, the joining device 25 includes a joint member 43 having a left-hand thread 41 and a right-hand thread 42, a tubular body 45 having a screw hole 44 screwed into the left-hand thread 41, and a right-hand thread 42. And one cylinder 45 is inserted into one end of the tire forming member 24, and the other cylinder 47 is inserted into the other end of the tire forming member 24. Inserted at the end.

In the case of this joining device 25, the mold 27
This is adopted when the end portions of the tire forming member 24 are joined with the length taken out from the tire. Further, the joining device 25 is not limited to this structure. In the tire 5 formed as described above, the rim covering portion 10 covering the rim 6 of the tire main body 8 is formed on the rim covering portion 10 as shown in the sectional view of FIG. The rim housing hole 11 is formed so as to be divided by dividing surfaces 12A and 12B along the circumferential direction so as to be divided into two.

In the tire 5 according to the embodiment shown in FIGS. 1 to 7, the rim covering portion 10 is orthogonal to the rotation axis O (lateral direction) of the wheel 1 and the axis of the rim storage hole 11. It is formed so as to be divided into two by dividing surfaces 12A and 12B passing through X, but is not limited to this. For example, as shown in FIG. The plane may be divided by a plane 13 inclined with respect to a plane perpendicular to O. The inner diameter of the storage hole 11 for storing the rim 5 is:
The rim 5 is preferably formed in a circular hole having a diameter substantially equal to or slightly smaller than the outer diameter of the pipe material.

In the stage before the rim 6 is stored, the tire 5 (the divided surfaces 12A and 12B of the left and right components 10A and 10B constituting the rim covering portion 10).
Is continuous on the radially outer side (one end side) and separated on the radially inner side (other end side),
The interval between the divided surfaces 12A and 12B is formed so as to become gradually larger toward the inner side in the radial direction.
The rim 6 is formed so as to be easily inserted between the division surfaces 12A and 12B. In other words, in other words, the configuration of the rim covering portion 10 is configured such that storage recesses 11A, 11B having a semicircular cross section are formed in the respective dividing surfaces 12A, 12B of the rim covering portion 10 along the circumferential direction. By overlapping 12B, the pair of storage recesses 11A and 11B are combined to form the rim storage hole 11.

Then, as shown by a virtual line in FIG. 7B, the rim 6 is arranged (inserted) between the storage recesses 11A and 11B between the divided surfaces 12A and 12B of the rim covering portion 10, and thereafter, as shown in FIG. As shown in (c), by dividing the divided surfaces 12A and 12B into close contact with each other (the divided surfaces 12A and 12B).
B is closed) so that the rim 6 can be received in the rim receiving hole 11 in a non-adhered state.
The wheel body 2 is formed by holding between A and 12B. In this state, the division surfaces 12A, 1A
When the force for aligning 2B is released, the left and right components 10A, 1A constituting the covering portion 10 are formed by the elastic restoring force of the elastic body.
2B, the left and right components 10A, 10B constituting the covering portion 10 are held by holding stays 18 which sandwich the covering portion 10 from both right and left sides, as shown in FIGS. Is kept closed.

It should be noted that the portions other than the storage recesses 11A and 11B of the divided surfaces 12A and 12B may be adhered over the entire surface or at appropriate locations with an adhesive. The holding stay 18 includes a pair of left and right holding plates 18A,
18B, and a plurality thereof are provided in the circumferential direction of the tire 5. Further, in the example shown in FIG. 2, the spokes 15 are arranged at the outer ends in the wheel radial direction of the spokes 15. However, as shown in FIG. 14, the holding stay 18 is arranged between the spokes 15 adjacent in the circumferential direction. You may.

The inner sides of the left and right holding plates 18A, 18B in the wheel radial direction are overlapped and arranged so as to abut against the outer ends of the spokes 15 in the wheel radial direction. The mounting stay 17 and the left and right holding plates 18 are arranged in a superposed state.
The holding stay 18 is detachably attached to the mounting stay 17 by a bolt 19 penetrating through the bolts A and 18B and a nut 20 screwed to the bolt 19, and the left and right holding plates 18A, 1
By tightening the inner side in the wheel radial direction of 8B, the rim covering portion 10 is tightened from the left and right sides on the outer side in the wheel radial direction of the left and right holding plates 18A, 18B.

As shown in FIG. 2, one holding stay 18 of the plurality of holding stays 18
0 is pinched at the joint portion 26. In the present embodiment, the connecting means 4 for connecting the wheel main body 2 to the wheel main body 3 is constituted by the mounting stay 17, the holding stay 18, the bolt 19 and the nut 20. The right and left holding plates 18A and 18B are attached to the mounting stays 17 using rivets or the like instead of the bolts 19 and the nuts 20.
May be fixed.

The left and right holding plates 18A, 18B
The outer side in the wheel radial direction is formed so as to follow the side surface shape of the rim covering portion 10. That is, the outer sides in the wheel radial direction of the left and right holding plates 18A, 18B are formed in a curved shape so as to move outward in the left-right direction and then inward in the left-right direction as going outward in the wheel radial direction. The distance between the left and right holding plates 18A, 18B is
It is formed so as to be wide at an intermediate portion in the wheel radial direction and narrow at the inner end side and the outer end side in the wheel radial direction.

Further, as described above, the interval between the left and right holding plates 18A and 18B on the outer end side in the wheel radial direction is formed so as to be smaller than the interval on the intermediate portion in the wheel radial direction. The outer ends 23 of the holding plates 18A, 18B in the wheel radial direction are formed with the axis X of the rim 6 (the pipe material constituting the rim 6) (in the present embodiment, the axis of the rim 6 and the rim storage hole 1).
1 coincides with the axial center of the tire), the rim covering portion 10 of the tire 5 easily comes out of the holding stay 18 between the left and right holding plates 18A, 18B. Not configured.

The fastening of the rim covering portion 10 by the holding plates 18A and 18B is performed by the left and right holding plates 1.
8A and 18B may be designed to be strongest at the outer end 23 in the wheel radial direction. In the wheel body 2 having the above-described configuration, when the divided surfaces 12A and 12B are not bonded, when the bonding portion is not continuous in the circumferential direction, when the adhesive is deteriorated, and the like, the wheel diameter between the divided surfaces 12A and 12B is reduced. When water, mud, or the like enters the rim storage hole 11 from the inner end in the direction and reaches the rim storage hole 11, the rim 6 is rusted. To prevent rusting), and to prevent the split surfaces 12A and 12B from opening easily (to prevent the rim covering portion 10 from opening radially inside), the rim covering portion 10
The split surface 12 on the inner side in the wheel radial direction from the rim storage hole 11
A, 12B has a convex portion 21 on one surface thereof, and a divided surface 12A, 1B.
A concave portion 22 fitted to the convex portion 21 is formed on the other surface of 2B.
Each is formed over the entire circumference of the tire 5 in the circumferential direction.

The sectional shapes of the convex portions 21 and the concave portions 22 are not limited to those of the above-described embodiment.
For example, as shown in FIG. 17, the cross-sectional shape of the convex portion 21 may be trapezoidal (therefore, the cross-sectional shape of the concave portion 22 is a shape matching this trapezoidal shape). Also, the protrusion 21
The number of fitting portions between the and the concave portion 22 is not limited to one, and a plurality of fitting portions may be provided. For example, as shown in FIG. 18, the projections 2 are provided on both of the divided surfaces 12A and 12B.
1 and the concave portion 22 may be provided.

A plurality of (for example, two) convex portions 21 are formed on one of the divided surfaces 12A and 12B,
The number (two) of the concave portions 22 corresponding to the convex portions 21 may be formed on the other surface of 12B. In the tire 5 having the above-described configuration, for example, as shown in FIGS. 8 and 9, the above-described tire forming member 24 is vulcanized and formed separately from the rim 6 by using a tire molding die 27. This mold 27
A pair of upper and lower dies (molding dies) 28 and 29 which are formed in a substantially linear shape and are divided in a vertical direction perpendicular to the longitudinal direction;
The rim is provided in a cavity 30 between the upper and lower dies 28 and 29, and is provided with a core 31 for forming the rim covering portion 10 in a divided shape.

Therefore, the outer surface of the tire 5 is formed by the inner surfaces of the cavities 30 of the upper and lower dies 28, 29, and the core 31 is used to divide the rim covering portion 10 into the divided surfaces 12A, 12B.
Is formed. Thus, in forming the tire 5,
By using the substantially linear mold 27, the manufacturing cost per mold surface is significantly reduced as compared with the case of using a circular annular mold. Further, when forming the tire 5, the above-described substantially linear mold 27 may be manufactured every time the wheel outer diameter is different, but this increases the manufacturing cost of the tire 5.

Therefore, the length L of the mold 27 is set to a length (for example, 1200 mm to 25 mm) that can form the tire 5 having the largest outer diameter among the plurality of wheels 1 having different outer diameters.
00 mm), and the tire forming member 24 formed by the mold 27 is cut into appropriate lengths to obtain the tire forming member 24 having a predetermined length. A plurality of tires 5 having different diameters can be formed, and an expensive mold does not have to be formed for each different wheel outer diameter.
The tire 5 can be manufactured at low cost. In addition, you may make it shape | mold with a curved metal mold | die in order to shape | mold the long end tire forming member 24.

As shown in FIGS. 8 and 10, the core 31 is orthogonal to the longitudinal direction between the upper and lower dies 28 and 29 between the forming part 32 for forming the divided surfaces 12A and 12B of the rim covering part 10. And a supported portion 33 supported in a pinched manner at one end in the lateral direction.
A pair of storage recess forming portions 34 for forming 1A and 11B;
A projection 35 forming the recess 22 and a recess 36 forming the projection 21 are provided. Furthermore, core 31
Is formed with a convex portion forming side 37 for forming the convex portion 21 and a concave portion 22 so that the convex portion 21 can be satisfactorily extracted from the tire 5 which is vulcanized and molded in the mold 27 and taken out from the upper and lower dies 28 and 29. It is divided vertically into a concave part forming side 38.

The tire 5 is provided with an unvulcanized rubber material 39 on the outer side of the cavity 30 of the lower mold 29, as shown by a virtual line in FIG. While heating the material 39, the material 39 is crushed by the upper and lower dies 28 and 29 and injected into the cavity 30, whereby vulcanization molding is performed. Note that an unvulcanized rubber material may be arranged in the cavity 30. After the vulcanization molding, as shown in FIG. 10, first, the upper and lower dies 28 and 29 are released from the molded tire 5 and then the core 31 is extracted.

When extracting the core 31, if the concave portion forming side 38 of the core 31 is extracted before the convex portion forming side 37, the protrusion 35 of the core 31 is caught by the concave portion 22 of the tire 5 and Therefore, the convex portion forming side 37 of the core 31 is drawn out earlier than the concave portion forming side 38. In the case of the wheel 1 having the above-described configuration, when the wheel 1 is discarded, the bolts 19 and the nuts 20 are loosened, the holding stay 18 is removed from the tire 5, and the divided surface 1 is removed.
The rim 6 can be taken out from the rim housing hole 11 of the tire 5 by opening 2A and 12B, so that the tire 5 formed of a rubber-like elastic body and the rim 6 formed of metal or the like can be easily separated and separated. In addition, the used wheel 1 can be easily discarded, and it is not necessary to take much labor and cost to separate the tire 5 from the rim 6.

Further, in a conventional tire in which a tire is vulcanized and bonded to a rim, when the tire is deteriorated or damaged, the tire alone cannot be replaced, and the entire wheel is not replaced. It is uneconomical because it has to be replaced,
In the case of the present embodiment (the present invention), when the tire 5 is damaged or the like, only the tire 5 can be replaced. When the divided surfaces 12A and 12B are adhered to each other, the rim covering portion 10 is cut by a cutting means such as a cutter along the circumferential direction of the tire 5 and up to the rim storage hole 11, and this cutting is performed. Remove the rim 6 from the part.

In order to cure and bond the tire to the rim,
Although a shot blasting process and an adhesive application process are required, such a process is not required in the present invention. FIG. 12 shows a mold 27 according to another manufacturing method of the tire 5.
The basic mold 27A has predetermined dimensions (for example, at least a length capable of molding the tire 5 having the smallest outer diameter among the wheels 1 of the same type), and the basic mold 27A. The base mold 27A is composed of a plurality of protruding dies 27B, 27C, and 27D that can be connected to each other and can be connected to each other.
The tire forming member 24 having a predetermined length is obtained by adding 27D.

In the example shown in FIG. 12, the length L1 of the basic mold 27A is formed to a length capable of forming the tire 5 having a wheel outer diameter of 500 mm, and the extension mold 27B is connected to the basic mold 27. The length L2 of the tire 5 is a tire 5
Can be formed, and the foot mold 27 is added to the basic mold 27.
B and 27C are connected to each other, and the length L3 is the wheel outer diameter 6
The length L4 of the base mold 27 to which the tread dies 27B, 27C, and 27D are connected is a length capable of forming the tire 5 having a wheel outer diameter of 650 mm. I have.

In this embodiment, a plurality of tires 5 having different outer diameters can be formed by attaching the stepping molds 27B, 27C, and 27D to the basic mold 27A. The tire 5 does not have to be formed every time the wheel outer diameter is different, and the tire 5 can be manufactured at low cost. Also, when molding a tire with a circular annular mold,
In the case of forming tires having different outer diameters, it is necessary to change the mold to the press machine. However, in the above embodiment, the basic mold 27A is attached to the press machine, It is only necessary to attach or detach 27B, 27C, 27D, and there is little loss during production.

FIG. 13 shows a tire 5 formed by still another manufacturing method. The tire 5 is formed by vulcanizing a plurality of tires (for example, 200 to 500 mm in length) by vulcanization. For example, five to ten tire components 49 are provided, and the tire components 49 are sequentially fitted to the rim 6 and the tire components 49 adjacent to each other in the circumferential direction are joined by means such as bonding. Thus, the tire 5 is formed. In this embodiment, a tire component 49 forming one tire 5 is provided.
Are all of the same size, or most of the same size. By changing the number of tire components 49, it is possible to form a plurality of tires 5 having different wheel outer diameters, and to use an expensive mold. The tire 5 does not have to be formed every time the wheel outer diameter is different, and the tire 5 can be manufactured at low cost.

FIG. 16 is a sectional view of a tire 5 according to another embodiment. A cord 50 such as a steel cord embedded in the tire 5 over the entire circumference in the tire 5 is provided.
A plurality of tensile members 51 are provided in parallel in the radial direction. When the ends of the tire forming member 24 are joined by the joining device 25, the ends of the cord 50 are preferably connected to the cylinders 45 and 47. Further, the present invention is not limited to the above embodiment, and can be appropriately changed in design.

[0038]

According to the present invention described in detail above, a tire having a predetermined outer diameter is formed by forming a long and substantially linear tire forming member and joining the ends of the tire forming member together. Therefore, the mold for forming the tire does not need to be formed in a circular ring shape, and a long and substantially linear mold may be used, so that the manufacturing cost per mold surface is greatly reduced. . Further, in another invention, a long end-formed tire forming member is formed, and the tire forming member is cut into a predetermined length,
By joining the ends, a tire with a predetermined outer diameter is formed, so there is no need to form a large die on one side for each different wheel outer diameter, reducing manufacturing costs. Can be.

Further, in another invention, a substantially linear basic mold is provided, and a mold for forming a tire-forming member having a predetermined length is formed by adding a basic length mold to an appropriate length of extension mold. A mold is formed, and a tire having a predetermined outer diameter is formed by joining end portions of a tire forming member molded by the mold. There is no need to do this, and since a substantially linear mold is sufficient, the manufacturing cost per mold surface is significantly reduced,
It is not necessary to form an expensive mold on one side every time the wheel outer diameter is different, so that the manufacturing cost can be reduced. Further, when the tire is formed by a circular annular mold, tires having different outer diameters are used. In the case of forming, it is necessary to replace the mold with the press machine, but in the case of the present invention, the base mold is still attached to the press machine, and the extension mold is attached or removed, Good, low production loss.

Still further, in another invention, a plurality of short tire components are formed, and the tire components are joined to form a tire. Therefore, the number of short tire components is changed. Thereby, tires having different outer diameters can be formed, and it is not necessary to form an expensive mold on one surface every time the outer diameter of the wheel is different, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a process chart showing a tire manufacturing method according to an embodiment of the present invention.

FIG. 2 is an overall side view of a wheel.

FIG. 3 is a developed plan view of an outer peripheral side of the tire.

FIG. 4 is a sectional view taken along the line GG of FIG. 2;

FIG. 5 is an enlarged sectional view of a main part.

FIG. 6 is a sectional view taken along line HH of FIG. 2;

FIG. 7 is a cross-sectional view showing a step of storing the rim in a tire.

FIG. 8 is a sectional view taken along the line JJ of FIG. 9;

FIG. 9 is a side view of a mold.

FIG. 10 is a cross-sectional view showing a state where the tire is taken out of the upper and lower molds of the mold.

FIG. 11 is a cross-sectional view showing an example of a joining means of a tire forming member.

FIG. 12 is a side view of a mold according to another method for manufacturing a tire.

FIG. 13 is a side view of a tire formed by still another manufacturing method.

FIG. 14 is a side view of a wheel according to another embodiment.

FIG. 15 is a cross-sectional view of a wheel main body according to another embodiment.

FIG. 16 is a sectional view of a wheel main body according to another embodiment.

FIG. 17 is a cross-sectional view showing another example of the uneven fitting portion of the split surface of the tire.

FIG. 18 is a cross-sectional view showing still another example of the concave-convex fitting portion of the split surface of the tire.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wheel 5 tire 6 rim 10 rim covering portion 11A rim storage concave portion 11B rim storage concave portion 12A division surface 12B division surface 24 tire forming member 25 joint portion 26 joint portion 27A basic mold 27B joint foot mold 27C joint mold 27D joint Foot mold 49 Tire components

Claims (6)

[Claims] 1. A tire characterized in that a tire having a predetermined outer diameter is formed by forming a long, substantially linear tire forming member and joining end portions of the tire forming member together. Manufacturing method. 2. A long and ended tire forming member is formed,
A method for manufacturing a tire, characterized in that a tire having a predetermined outer diameter is formed by cutting the tire forming member to a predetermined length and joining end portions together. 3. A mold for forming a tire forming member having a predetermined length by adding a substantially linear basic mold, and adding a proper length of an extension foot mold to the basic mold. A tire manufacturing method, wherein a tire having a predetermined outer diameter is formed by joining end portions of a tire forming member formed by the mold. 4. A method for manufacturing a tire, wherein the tire is constituted by a plurality of short tire constituent members, and the tire constituent members are joined to form a tire. 5. The method for producing a tire according to claim 1, wherein the joining portions are joined by adhesion. 6. A rim covering portion for covering a rim of a tire is formed in a divided shape by divided surfaces along a circumferential direction, and a rim is provided on each divided surface to hold the rim between the divided surfaces. The method for producing a tire according to any one of claims 1 to 5, wherein the method is a method for producing a tire in which a storage recess for storing the tire is formed.