JPH05104658A - Method and apparatus for supplying tire-constitutional belt-like material - Google Patents

Abstract

PURPOSE:To bond correctly the tip end and rear end of a belt-like material without making any alteration at all times by suck-holding the lower surface side of tip end and rear end of a belt-like material that is cut into a regular size, and transferring it to the bonding position of a tire forming drum to thereby bond the tip end and rear end of the belt like material. CONSTITUTION:When a tire constitutional belt-like material W starts to be wound round a tire forming drum 1, the brake system of a first grasp-pressing unit 15 is released. Otherwise, a second grasp-pressing unit 15 suction-holds the rear end part Wb of the tire constitutional belt-like material and in keeping this state, it moves to the side of the tire forming drum 1 in conjunction with a transporting conveyer 2. The vacuum suction pad 34 of the second grasp- pressing unit 15 is in a state of holding the rear end part Wb of the belt-like material W. As a result, the tip end part Wa and rear end part Wb of the tire constitutional belt-like material W can be bonded accurately without deformation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for supplying a belt material for tire components, and more particularly to a band pulley of a tire molding machine for deforming front and rear end portions of a belt material for tire components such as side treads. The present invention relates to a method and an apparatus for supplying a belt-shaped material constituting a tire that can be accurately wound.

[0002]

2. Description of the Related Art Conventionally, as a device for supplying and pasting a tire-constituting strip-shaped material, which has been cut to a predetermined length substantially corresponding to the circumferential length of a tire-forming drum, to the tire-forming drum, for example, JP-A-63-256430. Is disclosed in. In this strip material sticking device, the top surface of the tip end of the supplied strip material is sucked and held by a sandwiching means provided with a sandwiching pad, conveyed to a forming drum, and is stuck and crimped by a crimping means. When winding the strip-shaped material, the sandwiching means provided with the sandwiching pad sucks and holds the strip-shaped material up to the vicinity of the completion of winding the strip-shaped material in a state where the upper surface of the rear end of the strip-shaped material is sucked and held.

[0003]

By the way, in the pasting device for the strip-shaped material as described above, when supplying the front end and the rear end of the strip-shaped material to the forming drum, the upper surface of the front end and the rear end of the strip-shaped material is sandwiched by a sandwiching pad. Since it was supplied while alternately holding and adsorbing by one sandwiching means equipped with, there is a problem that the control for supplying is extremely complicated and the work efficiency is poor, and the leading end and the rear end of the strip-shaped material are Since the part is not held to the position where the forming drum is attached, there is a problem that the front end and the rear end of the band-shaped material may be deformed, and it is difficult to abut and attach with high accuracy.

The present invention has been devised in view of the above-mentioned conventional problems, and the lower surface side of the front end and the rear end of the band-shaped material cut to a fixed length is adsorbed and held and transferred to the attachment position of the tire forming drum. However, since the front end and the rear end of the strip-shaped material are attached at this position, the method and apparatus for supplying the tire-constituting strip-shaped material capable of always attaching the strip-shaped material with high accuracy without deforming the front end and the rear end of the strip-shaped material are provided. The purpose is to do.

[0005]

In order to achieve the above object, the present invention conveys a belt-shaped material constituting a tire, which has been cut to a predetermined length, below a tire forming drum so as to substantially correspond to the circumferential length of the tire forming drum. A conveyer is installed, and a tip end side of the conveyer conveyor is provided with a crimping elevating means for raising and lowering toward the tire forming drum side, and the conveyer conveyor can be moved or stopped together with the conveyer conveyor. The gist of the present invention is to provide a first gripping and crimping unit that sucks and holds the tip lower surface of the tire constituent strip-shaped material and a second gripping crimping unit that sucks and holds the rear end lower surface of the tire constituent strip-shaped material. ..

[0006]

The present invention is constructed as described above, and is capable of moving along the conveying conveyor the lower end of the tip end of the tire-constituting strip-shaped material, which is cut to a length corresponding to the circumferential length of the tire forming drum. And a step of adsorbing and holding it by the first gripping and crimping unit disposed on the tire forming drum of the tire forming drum by driving the conveying conveyor to suck the tip end portion of the tire-constituting strip-shaped material that is adsorbed and held by the first gripping and crimping unit. The step of conveying to the lower pressure-bonding position, and the state in which the lower surface of the rear end of the belt material of the tire is adsorbed and held by the second gripping pressure-bonding unit that can move together with the transportation conveyor, and the tip side of the transportation conveyor is raised. The step of crimping the tip end portion of the tire-constituting strip-shaped material onto the tire forming drum and the state where the rear end lower surface of the tire-constituting strip-shaped material is adsorbed and held by the second grip crimping unit, The tire forming drum comprises a step of sequentially winding the constituent strip-shaped materials and joining the front end and the rear end of the tire constituent strip-shaped material, and sucking and holding the lower surface side of the front end and the rear end of the strip-shaped material cut into a standard length. Since the front end and the rear end of the strip-shaped material are adhered at this position, the front end and the rear end of the strip-shaped material can be always adhered with high accuracy without being deformed.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of a supply device for supplying a tire-constituting strip-shaped material W such as a side tread according to the present invention to a tire forming drum 1, and FIG. 2 is a half sectional view taken along the line AA of FIG. The feeding device is provided below the tire building drum 1 with a carrying conveyor 2 for carrying the tire-constituting strip-shaped material W that has been cut into a predetermined length in a manner substantially corresponding to the circumferential length of the tire building drum 1.

The toothed conveyor belt 3 of the conveying conveyor 2 is endlessly wound around a head pulley 5a, a drive pulley 5b and a plurality of guide pulleys 5c arranged in front of and behind the conveyor frame 4. , Drive pulley 5b
Is driven to rotate by the drive motor 6. The conveyor frame 4 is mounted on the base frame 8 via a plurality of guide rails 7 arranged in a direction orthogonal to the longitudinal direction of the transport conveyor 2 as shown in FIG. The conveyor frame 4 is a conveyor conveyor 2
It can move in a direction orthogonal to the longitudinal direction of the.

The base frame 8 is installed on a rocking base 11 mounted on a frame 9, and the rocking base 11 is mounted on the rocking base 11.
The base end portion 11a of the swing base 11 is rotatably supported by a support shaft 12 provided on the pedestal 9, and the tip end portion 1 of the swing base 11 is
1b is connected to a rod 13a of an oscillating cylinder 13, which is a pressure-bonding lifting means attached to a gantry 9. Therefore, the tip side of the transport conveyor 2 has a swing cylinder 13
By the expansion and contraction operation of (1), it is possible to move up and down with respect to the tire building drum 1.

A first gripping and crimping unit 14 that can move or stop together with the transport conveyor 2 and that adsorbs and holds the tip lower surface Wa of the tire-constituting strip-shaped material W, and a tire-constituting strip-shaped member. A second gripping and crimping unit 15 for sucking and holding the rear end lower surface Wb of the material W is provided. Since the first gripping and crimping unit 14 and the second gripping and crimping unit 15 have exactly the same configuration, the configuration of the first gripping and crimping unit 14 will be described, and the description of the second gripping and crimping unit 15 will be omitted. Omit it.

As shown in FIGS. 2 and 3, the first gripping and crimping unit 14 has slide rails 16a and 16b parallel to each other on the conveyor frame 4 installed at the opposite positions on the base frame 8. The slide rails 16a, 16b are installed on the slide blocks 17a, 1
Support frames 19a and 19b in which vertical support plates 18a and 18b are suspended to face each other via 7b are slidably mounted. Support plates 18a, 1 facing each other
Two shafts 20a and 20b are rotatably supported on the upper portion of 8b via a bearing member 20 at predetermined intervals and in parallel. The shafts 20a and 20b are provided with urethane flanges 21a and 21b at both ends. Pulley 22 provided with
a and 22b are fixed via a collar 21 and a key 23.

A support plate 18 supported by the frame 10 below the center between the shafts 20a and 20b.
A shaft 25 is rotatably supported by a and 18b via a bearing 24, and a toothed pulley 27 is fixed to the shaft 25 by a key 26. Brake devices 28a and 28b for stopping the rotation of the toothed pulley 27 and free rotation are fixed to both ends of the shaft 25 protruding from the support plates 18a and 18b.

Adsorption holding means 30 for adsorbing and holding the tip lower surface Wa of the belt-shaped material W constituting the tire is arranged substantially in the center between the shafts 20a and 20b.
Is an ascending / descending means 31a, 31b such as an ascending / descending cylinder fixed to the upper side surfaces of the support plates 18a, 18b.
And a mounting plate 33 mounted on the rods 32 of the elevating means 31a and 31b, and a vacuum suction pad 34 mounted on the mounting plate 33 at a predetermined interval. The upper end of 34 is a belt-shaped material W constituting the tire conveyed on the toothed conveyor belt 3.
It is located near the lower surface of.

Further, in FIG. 2, 35 and 36 are flanges provided on the pulleys 22a and 22b and the toothed pulley 27, respectively. Next, a method for supplying the tire-constituting strip-shaped material W to the tire building drum 1 will be described with reference to FIGS. 4 to 7. First, the first grip crimping unit 14,
In the state where the vacuum suction pad 34 with the second gripping / bonding unit 15 is not operating, the tire constituent strip material W, which is cut to a predetermined length corresponding to the circumferential length of the tire forming drum 1, is provided on the transport conveyor 2. Is supplied to the plurality of vacuum suction pads 3 of the first gripping pressure bonding unit 14 as shown in FIG.
4 acts to adsorb the tip lower surface Wa of the tire-constituting strip-shaped material W. Then, the brake device 28 of the shaft 25 provided with the toothed pulley 27 of the first grip crimping unit 14
a and 28b act to lock the toothed pulley 27, the plurality of vacuum suction pads 34 of the second gripping and crimping unit 15 are not actuated, and the brake device (not shown) is also actuated. There is no state. Therefore, the toothed pulley of the second grip crimping unit 15 is in a free state.

In this state, when the transport motor 2 is rotationally driven by the drive motor 6, as shown in FIG.
The first gripping pressure bonding unit 14 that holds the tip lower surface Wa of the tire-constituting strip-shaped material W by suction moves along with the movement of the transport conveyor 2 by a distance corresponding to the circumferential length of the tire forming drum 1. After that, the plurality of vacuum suction pads 34 of the second grip pressure bonding unit 15 act to suck the rear end lower surface Wb of the tire-constituting strip-shaped material W, and the brake device also operates to bring the toothed pulley into a locked state. The first grip crimping unit 14 and the second grip crimping unit 15 are
Tip lower surface Wa and rear end lower surface Wb of the tire-constituting strip-shaped material W
While transporting the conveyor 2 while holding the
The tire forming drum 1 is moved to the lower pressure-bonding position.

From this state, with respect to the tire forming drum 1 which is rotationally driven in a predetermined direction, the tip end side of the conveying conveyor 2 is actuated by the rocking cylinder 13 to be raised, and the tip end of the belt material W constituting the tire. Stick the parts by pressure. Figure 6
As shown in FIG. 1, when the belt material W constituting the tire is started to be wound around the tire forming drum 1, the first gripping pressure bonding unit 1
No. 4 brake device 28a, 28b is unlocked, the toothed pulley 27 is free, while the second grip crimping unit 15 suction-holds the rear end Wb of the tire-constituting strip-shaped material W. In this state, it moves toward the tire building drum 1 side as the transport conveyor 2 moves.

Then, as shown in FIG. 7, in the vacuum suction pad 34 of the second gripping and crimping unit 15, the rear end portion Wb of the belt material W constituting the tire is completely wound around the tire forming drum 1, and therefore, The rear end portion Wb of the tire constituent strip material W is held until the front end and the rear end of the tire constituent strip material W are abutted against each other. As a result, the front end portion Wa and the rear end portion Wb of the tire-constituting strip-shaped material W can be attached with high precision without deformation.

Further, when the winding of the tire-constituting strip-shaped material W is completed, the braking devices 28a and 28b of the first gripping and crimping unit 14 and the second gripping and crimping unit 15 are operated to operate the toothed pulleys 27. When the drive motor 6 is driven in the reverse direction, the transport conveyor 2
At the same time, the first gripping and crimping unit 14 and the second gripping and crimping unit 15 return to the positions shown in FIG. 4 and stand by until the next tire constituent strip material W is supplied.

By repeating the above-described operation, the tire-constituting strip-shaped material W can be accurately attached to the tire forming drum 1 without deforming the front end portion and the rear end portion.

[0020]

According to the present invention, which is constructed as described above, the lower surface side of the front end and the rear end of the band-shaped material, which has been cut to a constant length, is adsorbed and held, and is transferred to the attaching position of the tire forming drum, and at this position. Since the front and rear ends of the band-shaped material are pasted, it is possible to always automatically and accurately past the band-shaped material without deforming the front and back ends of the band-shaped material, which significantly improves workability and productivity and is highly accurate. There is an effect that the pasting work can be performed.

[Brief description of drawings]

FIG. 1 is a front view of a supply device for supplying a tire-constituting strip-shaped material such as a ride tread according to the present invention to a tire forming drum.

FIG. 2 is a half sectional view taken along the line AA of FIG.

3 is an enlarged view of a portion X in FIG. 1, and is a cross-sectional view taken along the line BB of FIG.

FIG. 4 is an explanatory view showing a state in which the lower surface of the tip end of the belt-shaped material constituting the tire is suction-held by the first grip pressure-bonding unit.

FIG. 5 is an explanatory view showing a state in which the lower surface of the tip end of the tire-constituting strip-shaped material is sucked and held by the first gripping and crimping unit and moved to the lower crimping position of the tire forming drum.

FIG. 6 is an explanatory diagram showing a state in which a tire-constituting strip-shaped material is wound around a tire building drum.

FIG. 7 is an explanatory diagram showing a state in which winding of the tire-constituting strip-shaped material has been completed on the tire building drum.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tire forming drum 2 Conveyor conveyor 13 Crimping raising / lowering means 14 First gripping and crimping unit 15 Second gripping and crimping unit W Tire constituent strip material Wa Wa tire constituent strip material tip lower surface Wb Tire constituent strip material lower surface

Claims (2)

[Claims] 1. A first gripping pressure bonding unit in which a lower surface of a tip end of a tire-constituting band-shaped material, which is cut to a length substantially corresponding to a circumference of a tire forming drum, is movably arranged along a conveyor conveyor. The step of adsorbing and holding with, and the tip portion of the tire-constituting strip-shaped material that is adsorbed and held by the first grip pressure bonding unit,
A step of transporting to the lower pressure-bonding position of the tire forming drum by driving the transport conveyor, and a state in which the lower end of the rear end of the tire-constituting band-shaped material is suction-held by a second gripping pressure-bonding unit movable with the transport conveyor. Then, the step of raising the tip side of the transport conveyor to crimp the tip portion of the tire-constituting strip-shaped material to the tire forming drum, and the state in which the rear end lower surface of the tire-constituting strip-shaped material is adsorbed and held by the second grip crimping unit. 2. A method for supplying a tire-constituting strip-shaped material, comprising the steps of sequentially winding the tire-constituting strip-shaped material around a tire forming drum and joining the front end and the rear end of the tire-constituting strip-shaped material. 2. A conveyor conveyor is provided below the tire forming drum to convey the tire-constituting strip-shaped material cut to a fixed length in a manner substantially corresponding to the circumference of the tire forming drum, and the tip of the conveyor conveyor. A first lifting and lowering means for lifting and lowering the side toward the tire forming drum side, capable of moving or stopping together with the transport conveyor to the transport conveyor, and sucking and holding the tip lower surface of the belt material constituting the tire. And a second gripping and crimping unit for sucking and holding the rear end lower surface of the tire constituent strip-shaped material.