JP4205449B2 - Tire molding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tire molding machine, and more particularly to a tire molding machine that improves productivity.
[0002]
[Prior art]
In general, a tire molding machine that forms a member assembly by winding a sheet-like tire constituent member around a forming drum includes a supply unit that supplies the tire constituent member, and the tire constituent member supplied from the supply unit is wound and formed An expandable / contractable molding drum, a crimping means for crimping and joining the joints at both ends of the tire constituent member wound around the molding drum, a moving means for moving the member assembly molded on the molding drum to the next step, and Drum support means that rotatably supports the forming drum and is 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 constituent member supplied from the supply means is wound around the outer peripheral surface of the molding drum, both ends of the tire constituent member on the molding drum are moved while the crimping means moves in the width direction of the molding drum. The joint is joined by crimping. This crimping process is performed every time each tire constituent member is wound on the forming drum.
[0004]
When the member assembly is formed on the forming drum after the crimping process is completed, the drum support means moves the forming drum to the standby position of the moving means, where the moving means grips the member assembly on the forming drum. It moves to the next process.
[0005]
[Patent Document 1]
JP 61-297129 A [Patent Document 2]
Japanese Patent Laid-Open No. 3-281331
[Problems to be solved by the invention]
By the way, with the recent intensification of competition in the tire industry, further cost reduction is required. In order to achieve this, improvement in production efficiency in the tire manufacturing process has become indispensable.
[0007]
An object of the present invention is to provide a tire molding machine capable of improving productivity.
[0008]
[Means for Solving the Problems]
The present invention that achieves the above object includes a supply means for supplying a tire constituent member, an expandable / contractible forming drum for winding and forming the tire constituent member supplied from the supply means, and the tire wound around the forming drum. Crimping means for crimping and joining the joints at both ends of the component member, moving means for moving the member assembly molded on the molding drum to the next process, and supporting the molding drum rotatably and the moving means A drum supporting means that is movable to a standby position of the tire, wherein the pressure-bonding means is a tire constituting member wound around the forming drum while the drum supporting means moves toward the standby position. A feature is that the joint portions at both ends are crimped.
[0009]
According to the said structure, since the crimping | compression-bonding process by a crimping | compression-bonding means and the movement process of the forming drum by a drum support means can be performed simultaneously, manufacturing time can be shortened and productivity can be improved.
[0010]
Moreover, since the joints at both ends of the tire constituent member can be crimped by the crimping means by using the movement by the drum support means, a mechanism and an operating device for reciprocating the crimping means in the width direction of the molding drum as in the prior art. There is no need to install. For this reason, the tire molding machine can be made inexpensive, which can further contribute to the cost reduction of the tire.
[0011]
DETAILED DESCRIPTION OF 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 molding machine according to the present invention, in which 1 is a supply means for supplying tire constituent members, 2 is a forming drum for winding and forming tire constituent members supplied from the supply means 1, and 3 is a forming drum 2 Crimping means for crimping and joining the joints at both ends of the tire constituent members wound around 4, moving means for moving the member assembly molded on the molding drum 2 to the next process, and 5 for rotating the molding drum 2 It is a drum supporting means that can be supported by the moving means 4 and can move to a standby position of the moving means 4.
[0013]
As shown in FIG. 2, the supply means 1 has a plurality (three in the figure) of unwinding a long sheet-like tire constituent member m wound up via a liner n that prevents adhesion to the winding drum 11. Unwinding device 12 and a plurality (three in the figure) of conveying the tire constituent member m unwound from the unwinding device 12 into a tire constituent member m ′ having a predetermined length and conveying it to the forming drum 2 A device 13 is included.
[0014]
Each unwinding device 12 unwinds the tire constituent member m from the winding drum 11 by the unwinding motor 14 installed in the vicinity of the winding drum 11 and sends the unwound tire constituent member m to the conveying 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 constituent members is wound, and the conveyor belt 16 is operated by a transport motor 18 installed in the vicinity of the servicer rack 17, thereby forming a tire structure. The member can be conveyed to the molding drum 2 side.
[0016]
Further, the servicer rack 17 cuts the long sheet-like tire constituent member m unwound by a cutting device (not shown), and the tire constituent member m ′ having a predetermined length suitable for the length wound around the forming drum 2. It is comprised so that it may shape | mold.
[0017]
The forming drum 2 is configured to be expandable / contractable in the radial direction, and is rotatably supported by the drum support means 5. When the tip of the tire constituent member m ′ is crimped to the outer peripheral surface 21 of the molding drum 2, the molding drum 2 rotates, and the tire constituent member m ′ can be wound around the outer peripheral surface 21 to form a member assembly. Yes.
[0018]
A plurality of crimping means 3 are provided on the one end side (moving direction side) of the forming drum 2 on the gate-shaped frame 6 erected on the base B (in the figure, three as many as the unwinding device 12 of the supply means 1). It has been. The plurality of crimping means 3 are distributed in the circumferential direction of the molding drum 2, and one crimping means 3 </ b> A is fixedly installed on the side portion 6 a of the frame 6. The remaining two crimping means 3B, 3C are installed so as to engage with arcuate guide holes 6c formed in the upper part 6b of the frame 6 (arcs concentric with the forming drum 2). It is possible to move along.
[0019]
Each crimping means 3 includes a crimping roll 31 that crimps the joints m′1 and m′2 (see FIG. 6) at both ends of the tire component m ′, and a cylinder 32 that moves the crimping roll 31.
[0020]
As shown in detail in FIG. 5, the cylinder 32 is fixed to the frame 6 via a bolt 7, and the pressure-bonding roll 31 is rotatably attached to the tip of a rod 32 a of the cylinder 32 via a bracket 33. The pressure roll 31 is disposed so as to face the outer peripheral surface 21 of the forming drum 2, and can advance and retreat toward the outer peripheral surface 21 by the operation of the cylinder 32.
[0021]
A plate-shaped guide member 34 extending in the longitudinal direction of the cylinder 32 is fixed to one side portion of the cylinder 32, and a slide member 35 is slidably engaged with the guide member 34. The distal end portion of the slide member 35 is fixed to the distal end portion 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 crimping | compression-bonding roll 31 is crimped | bonded to the seam part m'1, m'2 with sufficient precision.
[0022]
As shown in FIG. 5, the crimping means 3B, 3C engaged with the guide long hole 6c by the bolt 7 allows the operator to move along the guide long hole 6c and change the crimping position by loosening the bolt 7. It is like that.
[0023]
The moving means 4 is installed adjacent to one end side of the molding drum 2 on a pair of guide rails 8 laid under the molding drum 2 and extending in the width direction of the molding drum 2 (left-right direction in FIG. 1). Has been. The guide rail 8 is disposed 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 placed on a guide rail 8 via a bearing 41. A plurality of arc-shaped gripping segments 44 that grip the member assembly X (see FIG. 6) molded on the molding drum 2 are arranged inside the transfer frame 43. Each gripping segment 44 is attached to a cylinder 45 with a guide fixed to the transfer frame 43, and is expanded or contracted by the operation of the cylinder 45 with a guide.
[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 rotatable on the drum support frame 53. It has a horizontal structure. The forming drum 2 is supported on one end side of the main shaft 54 protruding from one end side of the drum support frame 53 so as to be expandable and contractible. 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 the rotation shaft 56a and a pulley 55 of the main shaft 54. By the operation of the drive motor 56, the forming drum 2 is rotated 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 sliding 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 by the solid line shown in FIG. It can be reciprocated between the position and the standby position of the moving means 4 indicated by a two-dot chain line.
[0028]
In the tire molding machine described above, the long sheet-shaped tire constituent member m unwound from the first unwinding device 12 is cut into a tire constituent member m ′ having a predetermined length by the conveying device 13 and molded. When the drum 2 is conveyed, the forming drum 2 rotates, and the tire constituent member m ′ is wound around the outer peripheral surface 21 so that the seam portions m′1 and m′2 at both ends overlap each other.
[0029]
Similarly, a long sheet-like tire constituent member m is unwound from the second unwinding device 12 and the third unwinding device 12, and a tire constituent member m ′ cut to a predetermined length is obtained. It is wound around the forming drum 2 sequentially.
[0030]
When the winding of the tire constituent member m ′ is completed, the crimping rolls 31 of the crimping means 3A, 3B, 3C that have been aligned in advance move forward, and as shown in FIG. Press m'1 and m'2.
[0031]
In this state, the drum support means 5 moves on the guide rail 8 toward the standby position of the moving means 4. As a result, the pressure-bonding roll 31 sequentially presses and presses the both-end joints m′1 and m′2 of each tire constituent member m ′. This crimping operation is completed while the drum support means 5 moves toward the standby position, and the joint portions m′1, m′2 of the tire constituent members m ′ wound around the molding drum 2 are crimped. The member assembly X is molded.
[0032]
When the forming drum 2 reaches the standby position, the gripping segment 44 of the moving means 4 is reduced in diameter, and the member assembly X in which the joint portions m′1 and m′2 have been crimped is gripped from the outer peripheral side. When the diameter of the forming drum 2 is reduced, the moving means 4 that holds 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 both end seams m′1, m′2 of the respective tire constituent members m ′ wound around the forming drum 2 while the drum supporting means 5 moves toward the standby position. Since the pressure bonding process by the pressure bonding means 3 and the movement process of the forming drum 2 by the drum support means 5 are performed simultaneously without performing separately as in the prior art, the manufacturing time can be shortened. In addition, since the joints m′1 and m′2 at both ends of the plurality of tire constituent members m ′ are crimped simultaneously, the time required for the crimping process can be greatly shortened. Therefore, productivity can be improved.
[0034]
Further, since the both end joints m′1 and m′2 of the tire constituent member m ′ are pressure-bonded by the pressure-bonding means 3 by using the moving process of the forming drum 2 by the drum support means 5, the pressure-bonding means is used as in the prior art. A mechanism or an operating device that reciprocates in the width direction of the forming drum is not required, 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, an example in which the member assembly X is formed by winding three (plural) tire constituent members m ′ around the forming drum 2 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 such that the crimping means crimps both end seams of the tire constituent member wound around the forming drum while the drum support means moves toward the standby position of the moving means. Since the crimping process by the crimping means and the forming drum moving process by the drum supporting means can be performed simultaneously, the manufacturing time can be shortened and the productivity can be improved.
[0037]
Further, since the joint of both ends of the tire constituent member can be crimped by the crimping means by using the movement of the molding drum by the drum support means, a mechanism and an operating device for reciprocating the crimping means in the width direction of the molding drum can be provided. Therefore, the apparatus can be made cheaper and the tire cost can be further reduced.
[Brief description of the drawings]
FIG. 1 is an explanatory plan view showing an example of a tire molding machine according to the present invention.
FIG. 2 is a view taken in the direction of arrows AA in FIG.
FIG. 3 is a front explanatory view showing the supply unit omitted in FIG. 1;
4 is an explanatory side view of the moving means as seen from the direction of arrows CC in FIG. 3; FIG.
5A is an enlarged view of a pressure-bonding means that engages with a guide long hole, and FIG. 5B is a DD arrow view of FIG. 5A.
FIG. 6 is an explanatory view showing a step of crimping the joint portions at both ends of the tire constituent member wound around the forming drum.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Supply means 2 Molding drum 3, 3A, 3B, 3C Crimping means 4 Moving means 5 Drum support means 11 Winding drum 12 Unwinding device 13 Conveying device 17 Servicer rack 21 Outer peripheral surface 31 Crimping roll 32 Cylinder 43 Transfer frame 44 Grip segment 53 Drum support frame 54 Spindle X Member assembly m 'Tire component m'1, m'2

Claims (4)

A supply means for supplying a tire constituent member, an expandable / contractible forming drum for winding and forming the tire constituent member supplied from the supply means, and a seam portion at both ends of the tire constituent member wound around the forming drum. Pressure bonding means for joining, a moving means for moving a member assembly formed on the forming drum to the next process, and a drum support for rotatably supporting the forming drum and moving to a standby position of the moving means A tire forming machine comprising:
The tire molding machine which comprised the said crimping | compression-bonding structure to crimp | bond the both-ends seam part of the tire structural member wound around the said forming drum, while the said drum support means moves toward the said stand-by position. The tire molding machine according to claim 1, wherein a plurality of the crimping means are provided around the molding drum, and one crimping means is fixedly installed, while the remaining crimping means is installed so as to be movable in the circumferential direction of the molding drum. . The tire molding machine according to claim 2, wherein the plurality of pressure-bonding means are distributed in the circumferential direction of the molding drum. The said crimping | compression-bonding means has a crimping | compression-bonding roll which crimps | bonds the both-ends seam part of the said tire structural member, and this crimping | compression-bonding roll was provided facing the outer peripheral surface of the said forming drum so that advancement / retraction was possible. Tire molding machine.

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