JP4636477B2 - Method of assembling tire annular reinforcement - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for assembling an annular reinforcing body that reinforces a bead portion or a sidewall portion of a tire.
[0002]
[Prior art]
In order to ensure appropriate rigidity, the bead portion or the side wall portion of the tire may be configured to form an annular reinforcing body by continuously winding a cord along the surface of the bead filler or the side wall.
[0003]
In that case, conventionally, a cord is wound around the surface of the bead filler or side wall to integrally form an annular reinforcing body, and the bead filler or side wall integrated with the annular reinforcing body is pasted to the raw tire. It was.
[0004]
[Problems to be solved by the invention]
However, since the bead filler or the side wall around which the cord is wound must have an appropriate hardness and be capable of forming an annular reinforcing body, the material of the rubber is limited.
[0005]
Even if the bead filler or side wall is made of a material suitable for winding the cord, if the cord is wound around the bead filler or side wall and stored in a state where an annular reinforcement is formed integrally, the effect of deformation or shrinkage of the rubber member will occur. There is a risk that the annular reinforcing body is easily deformed.
Therefore, it is necessary to manage the date of rubber.
In addition, the molding order is restricted.
[0006]
The present invention has been made in view of such points. The object of the present invention is that the material of the tire constituent member is not limited and can be easily stored without being affected by the rubber member. It is in the point which provides the assembly | attachment method of the annular reinforcement body which does not receive a restriction | limiting.
[0007]
[Means for solving the problems and effects]
In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that an annular reinforcing body is formed by continuously winding a cord around a winding forming machine to form an annular reinforcing body, and the annular reinforcing body formed on the winding forming machine. The annular reinforcement is transferred from the winding molding machine to the conveyance disk by transferring it to the conveyance disk, and the conveyance disk conveys the annular reinforcement to the raw tire molding machine and sets it on the raw tire molding machine. The annular reinforcing body is bonded to the green tire, and the annular reinforcing body is transferred from the transport disk to the raw tire and transferred .
[0008]
Since the annular reinforcing body is formed by continuously wrapping and winding the cord on the winding molding machine, the material of the tire constituent member such as the bead filler is not limited.
Further, the molded annular reinforcing body can be stored regardless of the tire constituent member, and can be easily stored without being affected by deformation or shrinkage of the rubber member.
[0009]
Furthermore, since the formed annular reinforcement is conveyed to a raw tire molding machine and the annular reinforcement is transferred to the raw tire set on the raw tire molding machine, there is no restriction on the molding order of the raw tires.
[0013]
The annular reinforcing body formed on the winding forming disk can be easily stored in a state where it is transferred to the conveying disk.
[0014]
According to the second aspect of the present invention, the transport disk is mounted on the winding forming disk, the cord is continuously stacked on the mounted transport disk and wound to form an annular reinforcing body, and the transport disk is combined with the annular reinforcing body. The annular reinforcement is removed from the winding molding machine, transported to the green tire molding machine the annular reinforcing body formed with the transport disk, and bonded to the green tire set on the green tire molding machine. A method of assembling an annular reinforcing body, wherein the body is transferred from the transport disk to a green tire and transferred .
[0015]
Since the annular reinforcing body is formed by continuously wrapping and winding the cord on the conveying disk mounted on the winding forming disk, the transfer process of the annular reinforcing body to the conveying disk can be omitted, and the annular reinforcing body can be efficiently Assembly work can be performed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment according to the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 3, the winding molding machine 10 has a shape in which a disc portion 10b is developed from the flat cylindrical portion 10a to the outer periphery, and a vacuum cup 11 is arranged on the disc portion 10b. .
[0017]
The cord 1 is a rubber-coated cord, and the material of the cord itself may be steel or an organic fiber such as nylon.
The cord 1 is supplied by the cord supply device 5 and is delivered to the winding forming machine 10 from the grooved roll 16 that is pivotally supported at the tip of the L-shaped arm 15.
[0018]
The L-shaped arm 15 is pivotally supported and has a grooved roll 16 at one end, and a rod of the air cylinder 17 is bound to the other end, and one grooved roll 16 is wound by driving the air cylinder 17. It can be pressed against the disk portion 10b of the auxiliary molding machine 10.
[0019]
The L-shaped arm 15 can move in a radial direction along the disk portion 10b integrally with the air cylinder 17, and moves at a predetermined speed in synchronization with the rotational speed of the winding molding machine 10. To do.
[0020]
2, the cutter 6 and the feed roller 7 are arranged on the upstream side of the grooved roll 16 as shown in FIG. 2, and the guide tube 8 and the cutter 6 are arranged between the feed roller 7 and the cutter 6. A trumpet tube 9 is provided between the grooved roll 16.
[0021]
The cord 1 fed between the upper and lower feed rollers 7 as shown in FIG. 2 (1) is guided by the guide tube 8 and enters the trumpet tube 9, and as shown in FIG. 16, and is pressed against the disk portion 10 b of the winding molding machine 10 by the grooved roll 16 as shown in FIG.
[0022]
When a predetermined amount of the cord 1 is supplied, it is cut by the cutter 6 as shown in FIG.
Thereafter, when the cord 1 is fed again by the feeding roller 7, the tip of the cord 1 enters the trumpet tube 9 and is fed to the bottom of the grooved roll 16, and the winding of the cord 1 starts.
[0023]
The cord 1 sent out in this way is first fixed at the inner peripheral edge of the disk part 10b by a mechanical chuck and is positioned by the grooved roll 16 while being pulled out by the rotation of the winding molding machine 10, and the disk part. It is pressed against 10b and adsorbed by the vacuum cup 11.
An electromagnet may be used instead of the vacuum cup 11.
[0024]
Since the grooved roll 16 gradually moves in the centrifugal direction with respect to the rotation of the disk portion 10b, the cord 1 supplied from the grooved roll 16 as shown in FIG. 1 follows the surface of the disk portion 10b. The annular reinforcing body 2 is formed by continuously overlapping and winding, and is adsorbed and supported by the vacuum cup 11.
[0025]
When the annular reinforcing member 2 is thus formed on the winding molding machine 10, the conveying disk 20 is opposed to the annular reinforcing member 2 as shown in FIG. 4, and the suction of the vacuum cup 11 is released and the annular reinforcing member 2 is wound. Transfer from the attached molding machine 10 to the transport disk 20 (see FIG. 5).
Since the transfer surface of the transfer disk 20 is polished and polished with chrome plating and the covering rubber of the annular reinforcing member 2 is easily bonded, the annular reinforcing member 2 can be transferred from the winding forming disk 10.
[0026]
Note that a vacuum cup or an electromagnet may be provided on the transport disk 20 side to hold the annular reinforcing member 2 by suction.
The annular reinforcing body 2 can be stored in a state supported by the transport disk 20, and the annular reinforcing body 2 seems to be deformed due to the deformation and contraction of the rubber component of the tire as in the prior art. There is nothing wrong.
[0027]
The annular reinforcing member 2 supported by the transport disk 20 is disposed to face one side surface of the green tire T supported by the forming drum 21 (see FIG. 6), and is transferred to the outer surface of the bead filler or the side wall. Further, the annular reinforcing member 2 is opposed to the other side surface of the raw tire T (see FIG. 7), and the transfer is performed as shown in FIG.
[0028]
After the transfer, the top of the annular reinforcing member 2 is pressed by a stitcher to firmly fix the annular reinforcing member 2 to the green tire.
[0029]
In this way, the annular reinforcing body 2 can be attached to the bead portion and the side wall portion on both side surfaces of the green tire T. After that, when the tire is formed by vulcanization molding, the bead portion and the side wall portion have appropriate rigidity. It can be configured, and the strength and durability of the tire can be improved.
[0030]
As described above, the cord 1 is continuously overlapped and wound around the winding molding machine 10 to form the annular reinforcing body 2 regardless of the tire constituent member such as the bead filler. The material of the tire constituent member such as the bead filler is not limited.
[0031]
Further, since the formed annular reinforcing body 2 is transported to the forming drum 21 and the annular reinforcing body 2 is transferred to the raw tire T set on the forming drum 21, the forming order of the raw tire T is not limited.
[0032]
Since the annular reinforcing body 2 is molded in a process separate from the tire production line, it is advantageous in terms of productivity and occupies the molding station only for the time to transfer the annular reinforcing body to the raw tire, thus improving productivity. Can be made.
[0033]
The winding forming machine 10 may be configured to directly transfer the annular reinforcing body to the green tire. With this structure, the conveying disk is not necessary and the number of processes can be reduced.
[0034]
In the winding molding machine 10, the side surface of the disk part 10 b has a flat surface. However, in the embodiment shown in FIG. 9, the side surface of the winding molding machine 30 forms a conical surface, and the annular reinforcing body 32. Is formed into a conical shape (see FIG. 9 (1)).
[0035]
Accordingly, the transport disk 31 for transporting the annular reinforcement 32 also has a conical shape, and the annular reinforcement 32 is transferred from the winding molding machine 30 (see FIG. 9 (2)).
When the vicinity of the bead portion of the green tire is tapered in a conical shape, the circular reinforcing body 32 formed in such a conical shape is used, and the transfer to the green tire is smoothly and reliably performed.
[0036]
Another embodiment will be described with reference to FIG.
In the present embodiment, the transport disk 41 is combined with the winding forming disk 40 in advance, and the annular reinforcing body 42 is formed along the transport disk 41 (see FIG. 10 (1)).
[0037]
The formed annular reinforcing body 42 is removed from the winding molding machine 40 while being supported by the conveyance disk 41 (see FIG. 10 (2)), and is conveyed and transferred to the green tire of the molding drum.
The transfer step of the annular reinforcing member from the winding forming disk to the transport disk performed in the above embodiment is omitted in this embodiment.
[0038]
In the above embodiment, the annular reinforcing members are respectively attached to both side surfaces of the green tire, and if the beads are attached to the bead filler, the outer surface of the green tire after the bead filler has already been provided integrally with the green tire. An annular reinforcing body was attached to the front.
[0039]
However, as shown in FIG. 11, the annular reinforcing member 50 is attached before the bead filler B is attached to the green tire T, and the annular reinforcing member 50 is provided inside the bead filler B so that the bead filler B is provided thereon. It may be buried.
[0040]
Further, as shown in FIG. 12, an annular reinforcing body 50 may be embedded inside the bead filler B, and an annular reinforcing body 51 may be additionally provided outside the bead filler B.
[0041]
In the above embodiment, the cord has already been used with a cord coated with rubber. However, an annular reinforcing body is formed only with a cord made of steel or nylon, transferred to a raw tire, and a rubber sheet is placed thereon. You may make it coat | cover.
[Brief description of the drawings]
FIG. 1 is a perspective view of a winding forming machine and a code guide device according to an embodiment of the present invention.
FIG. 2 is a schematic side view of a cord supply device.
FIG. 3 is a cross-sectional view of a winding forming machine and an annular reinforcement.
FIG. 4 is a perspective view showing one state of a winding molding machine, an annular reinforcing body, and a transport disk.
FIG. 5 is a cross-sectional view showing another state of the winding forming machine, the annular reinforcing member, and the conveying disk.
FIG. 6 is a perspective view showing a molding drum, a green tire, an annular reinforcing member, and a transport disk.
FIG. 7 is a partially sectional side view showing another state of the forming drum, the green tire, the annular reinforcing member, and the transport disk.
FIG. 8 is a side view with a partial cross section showing another state of the forming drum, the green tire, and the annular reinforcing member.
FIG. 9 is a cross-sectional view of a winding forming machine and a transport disk according to another embodiment.
FIG. 10 is a cross-sectional view of a winding forming machine and a transport disk according to another embodiment.
FIG. 11 is a cross-sectional view showing a state where an annular reinforcing body is attached to a green tire in another embodiment.
FIG. 12 is a cross-sectional view showing a state where an annular reinforcing body is attached to a green tire according to another embodiment.
[Explanation of symbols]
1 ... cord, 2 ... annular reinforcement,
5 ... Cord supply device, 6 ... Cutter, 7 ... Feed roller, 8 ... Guide tube, 9 ... Trumpet tube,
10 ... winding machine, 11 ... vacuum cup, 15 ... L-arm, 16 ... grooved roll, 17 ... air cylinder,
20 ... conveying disk, 21 ... molding drum,
30 ... winding machine, 31 ... transport disk, 32 ... annular reinforcement,
40 ... winding machine, 41 ... transport disk, 42 ... annular reinforcement,
50, 51 ... annular reinforcement,
T: Raw tire, B: Bead filler.

Claims (2)

A cord is continuously stacked on a winding molding machine and wound to form an annular reinforcement.
Transferring and transferring the annular reinforcing body from the winding forming disk to the conveying disk by bonding the annular reinforcing body formed on the winding forming disk to the conveying disk,
The transport disk transports the annular reinforcement to a green tire molding machine;
The annular reinforcing body is transferred to the raw tire by transferring the annular reinforcing body to the raw tire by adhering the annular reinforcing body to the raw tire set in the raw tire molding machine. How to attach. Attach the transport disk to the winding molding machine
An annular reinforcement is formed by continuously wrapping and winding the cord around the installed transport disk,
Removing the transport disk together with the annular reinforcement from the winding molding machine;
The annular reinforcing body formed with the transport disk is transported to a raw tire molding machine
A method for assembling an annular reinforcing member, comprising: transferring the annular reinforcing member from a conveying disk to a raw tire and transferring the adhesive by attaching the annular reinforcing member to a raw tire set in a raw tire molding machine.

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