JP3662375B2 - Method and apparatus for feeding strip material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for supplying a belt-like material, and more specifically, a sheet-like belt-like material previously molded to a width corresponding to the circumferential length of the molding drum is cut according to the width of the molding drum. The belt-shaped material that has been cut into regular lengths is conveyed using a transfer roll and automatically rewound onto the forming drum, so that the belt-shaped material does not become wrinkles and does not cause air accumulation or the like. The present invention relates to a method and apparatus for supplying a belt-shaped material that can be efficiently supplied together.
[0002]
[Prior art]
Conventionally, in a tire molding process, when a plurality of sheet-like strip materials (for example, a carcass material, an inner liner, etc.) as tire constituent materials are stacked and pasted on a tire molding drum, The belt-shaped material was transferred and pasted onto the molding drum with a transfer roll interposed between the molding drum and the molding drum.
[0003]
As the method and apparatus for supplying the belt-like material, for example, as disclosed in JP-A-55-30987 and JP-A-62-59664, it is cut into a regular size and conveyed to the front end of the conveyor. A method has been proposed in which the belt-shaped material that has come is sucked and held by a transfer roll, transferred to the molding drum side, and wound.
[0004]
[Problems to be solved by the invention]
However, all of the above-mentioned supply methods are methods in which the transfer roll is wound in contact with the pulley of the multi-stage transport conveyor and fixed while the belt-shaped material is transported by the conveyor. It is difficult to maintain the exact positional relationship and contact pressure, and troubles such as wrinkles and meandering are likely to occur, and it is difficult to apply with high precision. Therefore, there is a problem that it takes a lot of time and labor to change the belt-shaped material, and a large space is required for the supply device, which makes it difficult to improve productivity and workability.
[0005]
The present invention has been devised by paying attention to such a conventional problem. When the belt-shaped material is transported to the molding drum side, the belt-shaped material can be accurately wound around the molding drum without using a conveyor or the like. An object of the present invention is to provide a method and an apparatus for supplying a belt-like material, which can be made, and can eliminate the need for a changeover operation of the belt-like material accompanying a change in molding size, and can significantly improve workability and productivity. To do.
[0006]
[Means for Solving the Problems]
The method for supplying the belt-like material of the present invention that achieves the above object is to provide a sheet-like belt-like material that has been previously molded to a width corresponding to the circumferential length of the molding drum at a predetermined interval from several locations parallel to the axis of the molding drum. In the method for supplying the strip-shaped material, the strip-shaped material is unwound and cut in accordance with the width of the molding drum. A regular conveyor that unwinds and conveys a sheet-like strip material that is arranged in parallel with the axis of the drum and that has been previously formed to a width corresponding to the circumference of the molding drum, and the width of the molding drum. A plurality of belt-shaped material supply means comprising a cutting device for cutting in accordance with the cutting belt material and a take-up conveyor for picking up the cut belt-shaped material, and the molding drum by reciprocating in the drum width center line direction of the molding drum. A transfer roll that is movably installed between several belt-like material supply means and that can be moved up and down and rotated is used. While moving in the direction, each strip material cut by the cutting means corresponding to the width of the forming drum and taken on the take-up conveyor is sequentially shifted by a predetermined interval in a state where the take-up conveyor is stopped. After the winding roll is wound on the outer peripheral surface of the transfer roll, the transfer roll wound with the belt-like material is moved to the molding drum side to bring the belt-like material laminated on the molding drum into contact with the molding drum, The gist of the invention is to roll up the laminated band-like material while rotating the transfer roll and wind it around the forming drum .
[0007]
The belt-shaped material supply device according to the present invention is provided with a molding drum for winding the cut belt-shaped material, and arranged in parallel with the axis of the molding drum, and previously molded to a width corresponding to the circumferential length of the molding drum. A plurality of belt-shaped belts, each of which is composed of a standard conveyor for unwinding and transporting the sheet-like belt-shaped material, a cutting device for cutting the belt-shaped material according to the width of the forming drum, and a take-up conveyor for picking up the cut belt-shaped material. Transfer that is movably installed between the forming drum and a plurality of belt-shaped material supplying means by reciprocating in the direction of the drum width center line of the forming drum, and capable of moving up and down and rotating. The transfer roll is rotated and moved in one direction in the direction of the drum width center line of the forming drum, and is drawn on a take-up conveyor of a plurality of belt-shaped material supply means. Each strip-shaped material is wound so that the front end position is sequentially shifted by a predetermined interval in a state where the take-up conveyor is stopped, and is laminated on the outer peripheral surface of the transfer roll, and then moved to the molding drum side, The gist is that the belt-like material is rewound on the molding drum.
The transfer roll guide frame may be configured to be movable in a direction parallel to the axis of the forming drum and in the direction of the center line of the forming drum, and a plurality of transfer rolls may be attached.
Furthermore, it is possible to install one set of the supply means and provide two or more forming drums.
[0008]
The present invention is configured as described above, and a belt-shaped material cut in accordance with the width of the molding drum can be reciprocated in the direction of the center line of the molding drum, and can be moved up and down, and can be moved up and down. The transfer roll wound with the belt-like material is moved to the forming drum side while being rotated and transferred to the forming drum side, and brought into contact with the belt, and the belt-like material is rewound onto the forming drum by rotating the forming drum. As in the past, it is possible to wind a belt-shaped material around a molding drum with high accuracy without using a conveyor, etc., and it is possible to eliminate the need for a belt material change-over operation due to a change in molding size. Productivity can be remarkably improved.
[0009]
Further, the belt-shaped material is unwound at a predetermined interval from at least several places parallel to the axis of the molding drum, and the belt-shaped material is cut in accordance with the width of the molding drum, and then the circumferential surface of the transfer roll. The front end position is shifted while being rotated and transferred while being shifted by a predetermined interval, and then the transfer roll is moved to the molding drum side and brought into contact with the molding drum by rotating the molding drum and the transfer roll. A similar effect can be expected by rewinding the belt-like material.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an overall perspective view of a belt-shaped material supply device according to the present invention, FIG. 2 is a side view of a transfer roll, and FIGS. 3A to 3L are explanatory diagrams illustrating a winding process of the belt-shaped material.
As shown in FIG. 1, the supply device for the band-shaped material W is installed between the supply unit 2 for the band-shaped material W and the forming drum 1, and with respect to the drum width center line PP direction of the forming drum 1. The transfer roll 3 can be moved back and forth and can be moved up and down and rotated.
[0011]
The supply means 2 is disposed in parallel with the axis XX of the drum shaft 4 of the molding drum 1 and has a width L corresponding to the circumference of the molding drum 1 in advance (actually the circumference of the molding drum 1+ The sheet-like belt-shaped material W formed into a lapping cost) is unrolled from the original roll 5 and conveyed, and the belt-shaped material W is made to have a material width H corresponding to the width of the molding drum 1. The cutting device 7 is configured to cut correspondingly, and a take-up conveyor 8 that picks up the cut strip-shaped material Wa. In this embodiment, the supply means 2 is parallel to the axis XX of the drum shaft 4 of the forming drum 1. Two units are installed, and are configured to cut and supply the carcass material Wx as the strip-shaped material W and the inner liner Wy.
[0012]
The number of supply means 2 is not limited to two depending on the material or type of the strip-like material W, and one or three or more can be installed.
The regular conveyor 6 and the take-up conveyor 8 are driven separately, and the belt-like material W (Wx, Wy) unwound from the raw fabric roll 5 is sent to the take-up conveyor 8 side through the cutting device 7, and at that position. The band-shaped material W (Wx, Wy) is cut at a fixed length by a cutting device 7 installed between the fixed length conveyor 6 and the take-up conveyor 8.
[0013]
Further, the transfer roll 3 includes suction suction means (not shown) for sucking and holding the end portion of the belt-like rubber material W (Wx, Wy), and with respect to the drum width center line PP of the molding drum 1. Two guide rails 9a and 9b are installed, and a guide frame 10 movable along the guide rails 9a and 9b is provided with a lifting means 11 such as a cylinder and a roll support member 12 (two guide rods 12a and a bearing member). 12b), both end shaft portions 3a are rotatably supported.
[0014]
The guide frame 10 is reciprocated between the supply means 2 and the forming drum 1 by a moving means 13 such as a ball screw and a servo motor, whereby the transfer roll 3 supported by the guide frame 10 is transferred to the forming drums 1 and 2. It can move between the take-up conveyor 8 of the supply means 2 of the table. The transfer roll 3 that can be rotated and moved up and down is crimped and rotated from the direction orthogonal to the strip-shaped material W (Wx, Wy) on the take-up conveyor 8 that has been cut and transported in a fixed size, and then transferred. The belt-shaped material W is wound around the outer peripheral surface of the sheet .
[0015]
The outer peripheral surface of the axis XX of the forming drum 1 is in contact with the center of the transfer roll 3 at the transfer terminal portion of the transfer roll 3, and the belt-like material W (Wx, Wy) wound around the outer peripheral surface of the transfer roll 3. ) Is rewound onto the outer peripheral surface of the forming drum 1 and the transfer roll 3 while being rotationally driven.
That is, in the embodiment of the present invention, since the two supply means 2 are installed, the two laminated belt-like materials W (Wx, Wy) are rotated while driving the molding drum 1 and the transfer roll 3. It is intended to be rewound onto the outer peripheral surface.
[0016]
Next, the winding process of the band-shaped material W (Wx, Wy) of the above embodiment will be described with reference to FIGS.
First, as shown in FIG. 3 (a), the belt-shaped material Wx (for example, carcass material) of the first supply means 2 is wound on the take-up conveyor 8 by a fixed length as shown in FIG. When the strip-shaped material Wx is supplied and stopped at a fixed position, the transfer roll 3 positioned at the standby position is lowered to the winding position via the lifting means 11 (see FIG. 3B), and the transfer roll 3 is not shown. The terminal portion of the strip-shaped material Wx is sucked and held by the suction suction means.
[0017]
Then, as shown in FIG. 3 (c) , the transfer roll 3 is rotated via the moving means 13 and the rotation by the servo motor is synchronized to rotate the transfer roll 3 and the drum width center line of the forming drum 1. While the belt-shaped material Wx cut in a fixed length is wound around the outer peripheral surface of the transfer roll 3 while being moved in one direction, the transfer roll 3 wound with the belt-shaped material Wx is lifted through the lifting means 11 ( FIG. 3 (d)).
The transfer roll 3 wound with the raised belt-like material Wx moves to the standby position on the second supply means 2 side via the moving means 13, and on the take-up conveyor 8 as shown in FIG. 3 (e). It descends from the strip-shaped material Wy (for example, inner liner) that has been cut at a fixed position.
[0018]
Then, the front end position of the band-shaped material Wy that has been cut in a predetermined length is shifted by a predetermined distance to the band-shaped material Wx wound around the transfer roll 3 (FIG. 3 (f)).
Since the belt-like material Wx and the belt-like material Wy are both in an unvulcanized state, when the transfer roll 3 is lowered and the belt-like material Wx is pressure-bonded to the belt-like material Wy, the belt-like material Wx and the belt-like material Wy are easily brought into close contact with each other. As shown in g), the feed roll 3 was fed through the moving means 13 and the rotation by the servo motor was synchronized, and was cut on the belt-like material Wx wound around the outer peripheral surface of the transfer roll 3. After winding the belt-shaped material Wy, the transfer roll 3 wound with the belt-shaped material Wx, Wy is lifted through the lifting / lowering means 11 (FIG. 3 (h)).
[0019]
As shown in FIG. 3 (i), the transfer roll 3 wound with the raised belt-like materials Wx and Wy moves to the vicinity of the forming drum 1, and the transfer roll 3 is moved as shown in FIG. 3 (j). Then, the shaft center of the forming drum 1 and the shaft center of the transfer roll 3 are lowered to the position where they substantially coincide with each other through the lifting / lowering means 11, and the transfer roll 3 is moved to the forming drum 1 side via the moving means 13 at this position. The belt-shaped materials Wx and Wy thus laminated are pressed against the forming drum 1 (FIG. 3 (k)).
[0020]
Then, the belt-like material Wy, that is, the belt-like material Wx made of the carcass material with the inner liner facing down, is rotated while the rotational driving of the molding drum 1 and the rotation of the transfer roll 3 in the pressure-bonded state are synchronously rotated. One cycle is completed by winding on the surface.
By repeating the above steps, the belt-shaped material can be accurately wound around the forming drum 1 without using a conveyor or the like, and the steps of the belt-shaped materials Wx and Wy accompanying the change of the molding size can be performed. Replacement work can be made unnecessary, and workability and productivity can be remarkably improved.
[0021]
Further, in the above embodiment, the two supply means 2 for the belt-like materials Wx and Wy are installed on the opposite side with respect to the drum width center line PP direction of the forming drum 1, but are installed on the same side. It is also possible.
Further, the guide frame 10 of the transfer roll 3 is configured to be movable in the direction parallel to the axis of the forming drum 1 and the drum width center line direction PP of the forming drum 1, and a plurality of transfer rolls 3 are attached. It is also possible to install one set of supply means 2 and provide two or more molding drums 1 (two molding machines). In the embodiment of FIG. 1, there is one set of the supply means 2 for one molding drum 1, and this configuration can reduce the cost.
[0022]
In addition, since the sheet-like belt-shaped material constituting the tire includes a carcass material, an inner liner, etc., two types of supply devices 2 are required, and for the inner liner, two sheets of butyl rubber and tie rubber are bonded together. In the case where these are bonded separately, three supply devices 2 are required. In the case of a two-ply tire, two carcass may be required.
[0023]
Therefore, depending on the type of tire, it is possible to install a plurality of supply means 2 in the drum width center line direction PP of the forming drum 1 in parallel with the axis of the forming drum 1 and at a predetermined interval. .
The guide frame 10 of the transfer roll 3 is configured to be movable in a direction parallel to the axis of the forming drum 1 and in the drum width center line direction PP of the forming drum 1, and a plurality of transfer rolls 3 are attached. Thus, for example, while the transfer roll 3 is wound around the forming drum 1, the other transfer rolls 3 can wind up the band-shaped material, and the cycle time can be shortened. It is possible.
[0024]
【The invention's effect】
Since the present invention is configured as described above, the belt-shaped material can be wound around the molding drum accurately and efficiently without using a conveyor or the like that transports the belt-shaped material to the vicinity of the molding drum as in the prior art. In addition, it is possible to eliminate the need to change the band-shaped material when the molding size is changed, and the workability and productivity can be remarkably improved.
[0025]
In addition, since the belt-shaped material is not wound around the transfer roll using a transport conveyor or the like, a large space is not necessary and the equipment cost can be reduced.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a belt-shaped material supply device according to the present invention.
FIG. 2 is a side view of a transfer roll showing a winding state of belt-like materials Wx and Wy.
FIGS. 3A to 3L are explanatory views showing a step of winding a belt-shaped material.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Molding drum 2 Supply means 3 Transfer roll 4 Drum axis | shaft 5 Original fabric roll 6 Fixed length conveyor 7 Cutting device 8 Take-out conveyor 9a, 9b Guide rail 10 Guide frame 11 Lifting means 12 Roll support member 12a Guide rod 12b Bearing member 13 Moving means W Strip material (Wx, Wy)
PP PP Drum width center line XX Drum shaft center L Length corresponding to the circumference of the forming drum H Material width corresponding to the forming drum width Wx Carcass material Wy Inner liner

Claims (4)

A sheet-like band-shaped material that has been previously molded to a width corresponding to the circumferential length of the molding drum is unwound at a predetermined interval from several places parallel to the axis of the molding drum, and the band-shaped material is made to the width of the molding drum. In the method of supplying the strip-shaped material to be wound around the molding drum after being cut correspondingly, supplied from the drum width center line direction of the molding drum,
A regular conveyor that unwinds and conveys a sheet-like belt-like material that is arranged in parallel with the axis of the molding drum and that has been previously formed to a width corresponding to the circumferential length of the molding drum, and the belt-like material. A plurality of strip material supply means comprising a cutting device for cutting in accordance with the width of the sheet, a take-up conveyor for picking up the cut strip material, and the molding by reciprocating in the drum width center line direction of the molding drum Using transfer rolls that are movably installed between a drum and a take-up conveyor of a plurality of belt-shaped material supply means, and that can be moved up and down and rotated,
While the transfer roll rotates and moves in one direction in the drum width center line direction of the forming drum, each strip-like material cut by the cutting means corresponding to the width of the forming drum and taken up on the take-up conveyor is taken up by the take-up conveyor. In this state, the front end position is sequentially shifted by a predetermined interval and wound so as to be laminated on the outer peripheral surface of the transfer roll, and then the transfer roll wound with the belt-like material is moved to the molding drum side. A belt-shaped material supply method comprising: bringing a belt-shaped material laminated on the forming drum into contact with each other ; and rotating the molding drum and the transfer roll to unwind the laminated belt-shaped material from the transfer roll and winding the material on the molding drum . A forming drum for winding the cut strip-shaped material, and a sheet-shaped strip-shaped material that is arranged in parallel with the axis of the molding drum and is previously formed to a width corresponding to the circumferential length of the forming drum is unwound and conveyed. A plurality of belt-shaped material supply means comprising a fixed-length conveyor, a cutting device that cuts the belt-shaped material according to the width of the molding drum, and a take-up conveyor for picking up the cut belt-shaped material, and the drum width of the molding drum The transfer roll comprises a transfer roll that is movably installed between the forming drum and a plurality of belt-shaped material supply means by reciprocating in the direction of the center line, and can be moved up and down and rotated. At the same time, while moving in one direction along the drum width center line of the forming drum, the take-up conveyor is stopped for each of the strip-like materials that have been cut on the take-up conveyor of the feeding means of the plurality of belt-like materials. In this state, the front end position is sequentially shifted by a predetermined interval and wound so as to be laminated on the outer peripheral surface of the transfer roll, and then moved to the forming drum side so that the belt-like material is rewound on the forming drum. A belt-shaped material supply device, characterized in that it is configured. 3. The belt-shaped material according to claim 2, wherein the guide frame of the transfer roll is configured to be movable in a direction parallel to the axis of the forming drum and a drum width center line direction of the forming drum, and a plurality of transfer rolls are attached. Feeding device. The belt-shaped material supply device according to claim 2 or 3, wherein two or more forming drums are provided .

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