JP2004249512A - Tire molding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire molding machine capable of enhancing productivity. <P>SOLUTION: The tire molding machine is equipped with a supply means 1 for supplying a tire constituent member m', an expansible and contractible molding drum 2 for taking up the tire constituent member m' supplied from the supply means 1 to mold the same, a press-bonding means 3 for bonding both end joints m'1 and m'2 of the tire constituent member m' taken up by the molding drum 2 under pressure to join them, a moving means 4 for moving the member assembly X molded on the molding drum 2 to a next process and a drum support means 5 for supporting the molding drum 2 rotatably to move the same to the standby position of the moving means 4. The press-bonding means 3 is constituted so as to bond both end joints m'1 and m'2 of the tire constituent member m' taken up by the molding drum 2 under pressure during the movement of the drum support means 5 toward the standby position of the moving means 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tire molding machine, and more particularly, to a tire molding machine with improved productivity.
[0002]
[Prior art]
In general, a tire forming machine in which a sheet-shaped tire component is wound around a forming drum to form a member assembly is provided with a supply unit for supplying the tire component, and a tire component supplied from the supply unit is wound and formed. Expandable / reducible forming drum, crimping means for pressing and joining both end seams of the tire component wound around the forming drum, moving means for moving the member assembly formed on the forming drum to the next step, and Drum supporting means rotatably supporting the forming drum and movable to a standby position of the moving means is provided (for example, see Patent Documents 1 and 2).
[0003]
In such a tire molding machine, when the tire component supplied from the supply unit is wound around the outer peripheral surface of the molding drum, the pressing unit moves in the width direction of the molding drum, and the both ends of the tire component on the molding drum are moved. The seam is crimped and joined. This pressure bonding step is performed each time each tire component is wound around a forming drum.
[0004]
When the crimping step is completed and the member assembly is formed on the forming drum, the drum supporting means moves the forming drum to a standby position of the moving means, where the moving means grips the member assembly on the forming drum. It moves to the next step.
[0005]
[Patent Document 1]
JP-A-61-297129 [Patent Document 2]
JP-A-3-281331
[Problems to be solved by the invention]
By the way, with the intensification of competition in the tire industry in recent years, further cost reduction is required. To achieve this, it has become essential to improve the production efficiency in the tire manufacturing process.
[0007]
An object of the present invention is to provide a tire molding machine capable of improving productivity.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a supply unit for supplying a tire component, a scalable forming drum for winding and forming the tire component supplied from the supply unit, and the tire wound on the forming drum. Crimping means for crimping and joining the joints at both ends of the constituent member, moving means for moving the member assembly formed on the forming drum to the next step, rotatably supporting the forming drum and the moving means And a drum supporting means movable to a standby position of the tire forming member, wherein the press-fitting means comprises a tire component wound around the forming drum while the drum supporting means moves toward the standby position. It is characterized in that a configuration is adopted in which the joints at both ends are crimped.
[0009]
According to the above configuration, since the pressing step by the pressing means and the moving step of the forming drum by the drum supporting means can be performed simultaneously, the manufacturing time can be shortened and the productivity can be improved.
[0010]
In addition, since the joints at both ends of the tire component can be press-bonded by the press-fitting means using the movement by the drum supporting means, a mechanism or an operating device for reciprocating the press-fitting means in the width direction of the forming drum as in the related art. There is no need to install. Therefore, the cost of the tire forming machine can be reduced, and the cost of the tire can be further reduced.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
[0012]
FIG. 1 shows an example of a tire forming machine according to the present invention, in which 1 is a supply unit for supplying a tire component, 2 is a forming drum for winding and forming the tire component supplied from the supply unit 1, and 3 is a forming drum 2. Means for crimping and joining the joints at both ends of the tire component wound around the member, 4 means for moving the member assembly formed on the forming drum 2 to the next step, 5 means the forming drum 2 can be rotated And a drum supporting means that can be moved to a standby position of the moving means 4.
[0013]
As shown in FIG. 2, the supply unit 1 unwinds a long sheet-shaped tire component m wound up through a liner n for preventing adhesion to the winding drum 11 (three in the figure). An unwinding device 12 and a plurality (three in the figure) of transporting the tire component m unwound from the unwinding device 12 into tire component members m ′ having a predetermined length and transporting them to the forming drum 2 It has a device 13.
[0014]
Each unwinding device 12 unwinds the tire component m from the winding drum 11 by an unwinding motor 14 installed near the winding drum 11, and sends the unwound tire component m to the transport device 13. The liner n is wound around a roll 15 provided below the winding drum 11.
[0015]
Each transport device 13 has a servicer rack 17 around which a conveyor belt 16 for transporting tire components is wound, and the conveyor belt 16 is operated by a transport motor 18 installed near the servicer rack 17 so that the tire configuration is adjusted. The members can be conveyed to the forming drum 2 side.
[0016]
In the servicer rack 17, a long sheet-shaped tire component m unwound by a cutting device (not shown) is cut, and a tire component m ′ having a predetermined length suitable for the length wound around the forming drum 2. Is formed.
[0017]
The forming drum 2 is configured to be able to expand and contract in the radial direction, and is rotatably supported by drum supporting means 5. When the tip of the tire component member m ′ is pressed against the outer peripheral surface 21 of the forming drum 2, the forming drum 2 rotates and the tire component m ′ can be wound around the outer peripheral surface 21 to form a member assembly. I have.
[0018]
A plurality of (three in the figure, the same number as the unwinding devices 12 of the supply means 1) are provided on the gate-shaped frame 6 erected on the base B at one end side (moving direction side) of the forming drum 2. Have been. The plurality of crimping means 3 are dispersedly arranged in the circumferential direction of the forming drum 2, and one crimping means 3 </ b> A is fixedly installed on the side 6 a of the frame 6. The remaining two crimping means 3B and 3C are installed so as to engage with an arc-shaped (concentric arc with the forming drum 2) guide elongated hole 6c formed in the upper portion 6b of the frame 6, and the guide elongated hole 6c It is possible to move along.
[0019]
Each of the crimping means 3 includes a crimping roll 31 for crimping both end joints m′1 and m′2 (see FIG. 6) of the tire constituent member m ′, and a cylinder 32 for moving the crimping roll 31.
[0020]
As shown in detail in FIG. 5, the cylinder 32 is fixed to the frame 6 via the bolt 7, and the pressure roll 31 is rotatably attached to the tip of the rod 32 a of the cylinder 32 via the bracket 33. The pressure roll 31 is disposed so as to face the outer peripheral surface 21 of the forming drum 2, and can be advanced and retracted toward the outer peripheral surface 21 by the operation of the cylinder 32.
[0021]
A plate-like guide member 34 extending in the longitudinal direction of the cylinder 32 is fixed to one side of the cylinder 32, and a slide member 35 is slidably engaged with the guide member 34. The distal end of the slide member 35 is fixed to the distal end of the rod 32a, and is guided by the guide member 34 via the slide member 35 when the rod 32a expands and contracts. Thereby, the pressure bonding roll 31 can be pressure-bonded to the joints m′1 and m′2 with high accuracy.
[0022]
As shown in FIG. 5, the crimping means 3B, 3C, which engages with the guide elongated hole 6c by the bolt 7, allows the operator to move along the guide elongated hole 6c by loosening the bolt 7 to change the crimping position. It has become.
[0023]
The moving means 4 is installed adjacent to one end of the forming drum 2 on a pair of guide rails 8 laid below the forming drum 2 and extending in the width direction of the forming drum 2 (the left-right direction in FIG. 1). Have been. The guide rail 8 is provided on a base table 9 provided on the base B.
[0024]
As shown in FIG. 4, the moving means 4 is provided with an octagonal transfer frame 43 on a moving body 42 mounted on a guide rail 8 via a bearing 41. Inside the transfer frame 43, a plurality of arc-shaped holding segments 44 for holding the member assembly X (see FIG. 6) formed on the forming drum 2 are arranged. Each gripping segment 44 is attached to a guided cylinder 45 fixed to the transfer frame 43, and is expanded and contracted by the operation of the guided cylinder 45.
[0025]
The drum support means 5 has a drum support frame 53 erected on a slide plate 52 slidably mounted on a guide rail 8 via a bearing 51, and a main shaft 54 is rotatably mounted on the drum support frame 53. It has a horizontal structure. The forming drum 2 is supported at one end of a main shaft 54 projecting from one end of the drum support frame 53 so as to be able to expand and contract. A pulley 55 is fixed to the other end of the main shaft 54.
[0026]
A drive motor 56 is installed at a lower portion in the drum support frame 53, and a belt 58 is wound between a pulley 57 fixed to a rotating shaft 56 a and a pulley 55 of the main shaft 54. The operation of the drive motor 56 rotates the forming drum 2 via the belt 58 and the main shaft 54.
[0027]
A rodless cylinder 59 is provided on the base 9 between the guide rails 8. The movable portion 59a of the rodless cylinder 59 is attached to the lower surface of the slide plate 52, and the drum support means 5 moves on the guide rail 8 by the operation of the rodless cylinder 59, and the forming drum 2 is formed into a solid line shown in FIG. A reciprocating movement can be made between the position and the standby position of the moving means 4 indicated by a two-dot chain line.
[0028]
In the above-described tire forming machine, the long sheet-shaped tire component m unwound from the first unwinding device 12 is cut into a tire component m ′ having a predetermined length by the transport device 13 and formed. When transported to the drum 2, the forming drum 2 rotates, and the tire constituent member m 'is wound around the outer peripheral surface 21 such that the seam portions m'1 and m'2 at both ends overlap.
[0029]
Similarly, a long sheet-shaped tire component m is unwound from the second unwinding device 12 and the third unwinding device 12, and a tire component m ′ cut to a predetermined length is obtained. It is sequentially wound on the forming drum 2.
[0030]
When the winding of the tire constituent member m 'is completed, the crimping rolls 31 of the crimping means 3A, 3B, 3C which have been positioned in advance advance, and as shown in FIG. Press m'1 and m'2.
[0031]
In this state, the drum supporting means 5 moves on the guide rail 8 toward the standby position of the moving means 4. Thereby, the press roll 31 sequentially presses and presses the joints m'1 and m'2 at both ends of each tire constituent member m '. This crimping operation is completed while the drum supporting means 5 moves toward the standby position, and the joints m′1 and m′2 at both ends of each tire component m ′ wound around the forming drum 2 are crimped. The member assembly X is formed.
[0032]
When the forming drum 2 reaches the standby position, the gripping segment 44 of the moving means 4 is reduced in diameter, and grips the member assembly X from the outer peripheral side where the seam portions m′1 and m′2 have been completely pressed. When the diameter of the forming drum 2 is reduced, the moving means 4 holding the member assembly X moves on the guide rail 8, and moves the member assembly X to the next step.
[0033]
According to the present invention, the pressure bonding means 3 is connected to both end seams m'1 and m'2 of each tire component m 'wound around the forming drum 2 while the drum supporting means 5 moves toward the standby position. And the step of moving the forming drum 2 by the pressing means 3 and the step of moving the forming drum 2 by the drum supporting means 5 are performed simultaneously without performing separately, so that the manufacturing time can be reduced. In addition, since both end joints m'1 and m'2 of the plurality of tire constituent members m 'are pressed at the same time, the time required for the pressing step can be significantly reduced. Therefore, productivity can be improved.
[0034]
Further, the crimping means 3 crimps the joints m'1 and m'2 at both ends of the tire constituent member m 'by utilizing the moving step of the forming drum 2 by the drum supporting means 5, so that the crimping means is conventionally used. A mechanism and an operating device for reciprocating in the width direction of the forming drum become unnecessary, and the device can be made inexpensive. As a result, it further contributes to the reduction of the cost for manufacturing the tire.
[0035]
In the above embodiment, the example in which three (plural) tire constituent members m ′ are wound around the forming drum 2 to form the member assembly X has been described, but one tire constituent member m ′ is formed. Even when it is wound around the drum 2 to form a member assembly, it can be suitably used.
[0036]
【The invention's effect】
As described above, the present invention is configured such that the pressure bonding means presses both end seams of the tire component wound around the forming drum while the drum supporting means moves toward the standby position of the moving means, Since the pressing step by the pressing means and the moving step of the forming drum by the drum supporting means can be performed at the same time, the manufacturing time can be reduced and the productivity can be improved.
[0037]
Further, since the joint at both ends of the tire component can be crimped by the crimping means using the movement of the forming drum by the drum supporting means, a mechanism and an operating device for reciprocating the crimping means in the width direction of the forming drum can be provided. This makes it possible to reduce the cost of the tire by making the device cheaper.
[Brief description of the drawings]
FIG. 1 is an explanatory plan view showing an example of a tire molding machine of the present invention.
FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;
FIG. 3 is an explanatory front view of FIG. 1 omitting a supply unit.
4 is an explanatory side view of the moving means as viewed from the direction of arrows CC in FIG. 3;
FIG. 5A is an enlarged view of a crimping means that engages with a guide elongated hole, and FIG. 5B is a view taken in the direction of the arrow DD in FIG.
FIG. 6 is an explanatory view showing a step of crimping a joint at both ends of a tire constituent member wound on a forming drum.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Supply means 2 Forming drum 3, 3A, 3B, 3C Crimping means 4 Moving means 5 Drum support means 11 Winding drum 12 Unwinding device 13 Transport device 17 Servicer rack 21 Outer peripheral surface 31 Crimping roll 32 Cylinder 43 Transfer frame 44 Grasping segment 53 Drum support frame 54 Main shaft X member assembly m 'Tire constituent member m'1, m'2 Joint at both ends

Claims (4)

Supply means for supplying a tire component, an expandable and contractible forming drum for winding and forming the tire component supplied from the supply means, and press-fitting both end seams of the tire component wound on the forming drum. Pressurizing means for joining by pressing, a moving means for moving the member assembly formed on the forming drum to the next step, and a drum support for rotatably supporting the forming drum and movable to a standby position of the moving means And a tire molding machine comprising:
A tire forming machine, wherein the pressing unit presses a joint at both ends of a tire component wound around the forming drum while the drum supporting unit moves toward the standby position. 2. The tire molding machine according to claim 1, wherein a plurality of the crimping units are provided around the forming drum, and one crimping unit is fixedly installed, and the remaining crimping units are installed so as to be movable in a circumferential direction of the forming drum. . 3. The tire molding machine according to claim 2, wherein the plurality of pressure-bonding units are dispersedly arranged in a circumferential direction of the molding drum. 4. The crimping means according to claim 1, 2, or 3, wherein the crimping means has a crimping roll for crimping a joint at both ends of the tire constituent member, and the crimping roll is opposed to the outer peripheral surface of the forming drum so as to be able to advance and retreat. Tire molding machine.

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