JP2639761B2 - Method and apparatus for supplying strip material for tire construction - Google Patents

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 a tire, and more particularly, to a band pulley of a tire forming machine in which front and rear ends of a belt material for a tire such as a side tread are deformed. The present invention relates to a method and an apparatus for supplying a belt-shaped material for a tire, which can be accurately wound without using the same.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for supplying a belt-shaped material for a tire, which is cut to a fixed length substantially corresponding to the circumference of the tire building drum, to the tire building drum, for example, Japanese Patent Application Laid-Open No. 63-256430 is disclosed. Is disclosed. In this band material sticking apparatus, the top surface of the supplied band material is conveyed to the forming drum while being held by suction by a holding means provided with a holding pad, and is then stuck and pressed by a pressing means. When winding the band-shaped material, the holding means provided with the holding pad holds the rear end upper surface of the band-shaped material by suction while holding the upper surface of the band-shaped material in the vicinity of completion of winding.

[0003]

However, in the above-described apparatus for attaching a band-shaped material, when the leading end and the rear end of the band-shaped material are supplied to a forming drum, the upper surfaces of the leading end and the rear end of the band-shaped material are sandwiched by a pad. Since the supply is performed while being alternately sucked and held by one holding means provided with, the supply control is extremely complicated, there is a problem that the working efficiency is poor, and the leading end and the trailing end of the band-shaped material Since the portion is not held to the position where the forming drum is attached, the leading end and the rear end of the band-shaped material may be deformed, and there is a problem that it is difficult to abut with high accuracy.

The present invention was devised in view of such a conventional problem, and the lower end side of the leading end and the trailing end of a band-shaped material cut to a fixed size is suction-held and transferred to a tire forming drum attaching position. Since the leading and trailing ends of the band-shaped material are attached at this position, a method and apparatus for supplying a tire-constituting band-shaped material that can always be adhered with high accuracy without deforming the leading and trailing ends of the band-shaped material are provided. It is intended to do so.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention conveys, below a tire building drum, a tire-constituting strip-shaped material cut to a fixed length substantially corresponding to the circumference of the tire building drum. A conveyor is installed, and a crimp elevating means for raising and lowering the tip side of the conveyor toward the tire forming drum side is provided, and the conveyor can be moved or stopped together with the conveyor, and the lower surface of the tip of the tire-constituting strip-shaped material. The first bundle that sucks and holds
The gist is that a holding unit and a second gripping unit that sucks and holds the rear end lower surface of the tire-constituting strip-shaped material are provided.

[0006]

According to the present invention, the lower surface of the front end of the tire-constituting strip-shaped material, which is constituted as described above and is cut to a fixed length substantially corresponding to the circumference of the tire forming drum, is movably arranged along the conveyor. A step of adsorbing and holding the first gripping unit provided , and a step of driving the tip of the tire-constituting strip-shaped material sucked and held by the first gripping unit by driving the transport conveyor.
In conjunction attracting and holding the second gripping unit can move a step of a predetermined distance conveyed to the tire building drum side, the rear end lower surface of the tire component material band with the transport conveyor and
Process and a conveyor for transporting the first and second gripping units
The tip of the belt-shaped material in the tire
A step of conveying to the lower crimping position of the forming drum, to increase the tip end side of the transport conveyor, the tire constituent material web in a tire molding drum and tip delivery to step a, the lower surface of the second rear end of the tire component material band while holding adsorbed by the gripping unit, with applying sequential around the tire building drum in conjunction with the driving of the conveyance conveyor consists of a step of joining the leading and trailing ends of the tire structure strip material, which is fixed size cut The lower and upper surfaces of the front and rear ends of the band-shaped material are suction-held and transferred to the tire forming drum application position, and the front and rear ends of the band-shaped material are pasted at this position, so the front and rear ends of the band-shaped material are deformed. It can always be attached with high accuracy without doing so.

[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 forming belt material W such as a side tread to a tire building drum 1 according to the present invention, and FIG. 2 is a half sectional view taken along the line AA of FIG. In the supply device, a conveyor 2 that conveys a tire-constituting belt-shaped material W that has been cut to a predetermined length substantially corresponding to the circumference of the tire forming drum 1 is provided below the tire forming drum 1.

The toothed conveyor belt 3 of the conveyor 2 is endlessly wrapped around a head pulley 5a, a driving pulley 5b, and a plurality of guide pulleys 5c disposed before and after the conveyor frame 4, and the driving pulley 5b.
Are rotationally driven by the drive motor 6. The conveyor frame 4 is placed on a base frame 8 via a plurality of guide rails 7 arranged in a direction orthogonal to the longitudinal direction of the conveyor 2 as shown in FIG. , Conveyor 2
Can be moved in a direction perpendicular to the longitudinal direction of.

The base frame 8 is mounted on a swing base 11 installed on a gantry 9,
Is pivotally supported by a support shaft 12 provided on a gantry 9, and the distal end 1 a of the swing base 11 is
1b is connected to a rod 13a of a swing cylinder 13 which is a crimping elevating means attached to the gantry 9. Therefore, the tip side of the transport conveyor 2 is
Can be moved up and down with respect to the tire building drum 1 by the expansion and contraction operation.

[00010] The in transport conveyor 2 is moved or can stop with transport conveyor 2, and a first gripping Uni for attracting and holding the leading end lower surface Wa of the tire component material web W
And Tsu bets 14, the second gripping unit 15 is provided for attracting and holding the rear end lower surface Wb of the tire component material band W. Note that the first gripping unit 14, the second gripping Uni
Since the configuration is exactly the same as that of the first grip unit 15,
Description of the second gripping unit 15 describes the structure of Tsu DOO 14 is omitted.

As shown in FIGS. 2 and 3, the first gripping unit 14 has slide rails 16a and 16b installed in parallel on a conveyor frame 4 installed at opposing positions on a base frame 8. The slide rails 16a, 16b have slide blocks 17a, 17
The supporting frames 19a and 19b, which vertically suspend the vertical supporting plates 18a and 18b via the b, are slidably mounted. Opposing support plates 18a, 18
b, two shafts 2 via a bearing member 20
The shafts 20a and 20b are rotatably supported at predetermined intervals and in parallel, and the shafts 20a and 20b are provided with pulleys 22a and 21b provided with urethane flanges 21a and 21b at both ends.
22 b is fixed via the collar 21 and the key 23.

A support plate 1 supported on a frame 10 substantially below the center between the shafts 20a and 20b.
A shaft 25 is rotatably supported on the shafts 8 a and 18 b via a bearing 24, and a toothed pulley 27 is fixed to the shaft 25 via a key 26. Brake devices 28a and 28b for stopping rotation of the toothed pulley 27 and for free rotation are fixed to both ends of the shaft 25 protruding from the support plates 18a and 18b.

At substantially the center between the shafts 20a and 20b, suction holding means 30 for suction holding the front lower surface Wa of the belt material W is provided.
Reference numeral 0 denotes elevating means 31a, 31 such as elevating cylinders fixed to upper side surfaces of the support plates 18a, 18b, respectively.
b, a mounting plate 33 mounted on the rod 32 of the lifting / lowering means 31a, 31b, and a vacuum suction pad 34 mounted on the mounting plate 33 at a predetermined interval. The upper end of the pad 34 is located in the vicinity of the lower surface of the tire-shaped belt-shaped material W conveyed on the toothed conveyor belt 3.

In FIG. 2, 35 and 36 are
These are flanges provided on the pulleys 22a and 22b and the toothed pulley 27. Next, a method of supplying the tire-constituting strip material W to the tire building drum 1 will be described with reference to FIGS. First, in a state where the vacuum suction pads 34 of the first gripping unit 14 and the second gripping unit 15 are not acting, a tire-shaped belt-like shape cut to a fixed length substantially corresponding to the circumference of the tire forming drum 1. When the material W is supplied onto the conveyor 2, the first material W is supplied to the first conveyor as shown in FIG.
The plurality of vacuum suction pads 34 of the grip unit 14 act to suction the lower end surface Wa of the tire-constituting strip-shaped material W. Then, the brake devices 28a and 28b of the shaft 25 provided with the toothed pulley 27 of the first gripping unit 14 act to lock the toothed pulley 27, and the plurality of vacuums of the second gripping unit 15 are locked. The suction pad 34 is not operating, and the brake device (not shown) is not operating. Thus, the second of the bunch
The toothed pulley of the holding unit 15 is in a free state.

In this state, when the conveyor 2 is driven to rotate by the drive motor 6, as shown in FIG. 5, the first gripping unit 14 that holds the tip lower surface Wa of the tire-constituting strip-shaped material W is attracted and held. With the movement of the conveyor 2, it moves by a distance corresponding to the circumference of the tire building drum 1. Thereafter, the plurality of vacuum suction pads 34 of the second gripping unit 15 act, and the tire-constituting strip-shaped material W
And the brake device is operated to lock the toothed pulley, and the first grip unit is locked.
The unit 14 and the second gripping unit 15 move to the lower pressure bonding position of the tire building drum 1 with the movement of the transport conveyor 2 in a state in which the front lower surface Wa and the rear lower surface Wb of the tire-constituting strip-shaped material W are sucked and held. .

From this state, the tip side of the conveyor 2 is raised by operating the swing cylinder 13 with respect to the tire building drum 1 which is rotatingly driven in a predetermined direction, and the tip end of the tire-constituting strip-shaped material W is moved. Press and paste. As shown in FIG. 6, when the tire-constituting belt-shaped material W starts to be wound around the tire building drum 1, the first gripping unit 14
Of the brake devices 28a and 28b are released, and the toothed pulley 27 is in a free state, while the second gripping unit 15 sucks and holds the rear end Wb of the tire-constituting strip-shaped material W. It moves toward the tire building drum 1 along with the movement of the conveyor 2.

[00017] Then, as shown in FIG. 7, the second gripping
The vacuum suction pad 34 of the unit 15 is in a state in which the rear end Wb of the tire-constituting band-shaped material W is completely wound around the tire building drum 1 and, therefore, the front end and the rear end of the tire-constituting band-shaped material W abut against each other. This means that the rear end portion Wb of the tire-constituting strip-shaped material W is held. As a result, the front end portion Wa and the rear end portion Wb of the tire-constituting strip-shaped material W can be accurately attached without being deformed.

[00018] Further, at the stage where the winding of the tire constituting band-shaped material W is completed, the first gripping unit 14 and the second bunch
When each of the toothed pulleys 27 is locked by operating the brake devices 28a and 28b of the holding unit 15, and the drive motor 6 is driven in reverse rotation, the first holding unit 14 and the second holding Unit 1
5 returns to the position shown in FIG. 4 and waits until the next tire-constituting belt-shaped material W is supplied.

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

[00020]

According to the present invention, the lower end side of the front end and the rear end of the band-shaped material cut to the fixed length is sucked and held and transferred to the tire forming drum attaching position. Since the front and rear ends of the band-shaped material are pasted, the band-shaped material can be automatically pasted with high precision without deforming the front and rear ends of the band-shaped material. There is an effect that the pasting operation can be performed.

[Brief description of the drawings]

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

FIG. 2 is a half sectional view taken on line AA of FIG. 1;

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. 2;

FIG. 4 is a diagram showing a first grip of a lower surface of a front end of a tire-constituting strip-shaped material.
FIG. 4 is an explanatory diagram showing a state where the unit is suction-held.

FIG. 5 is a diagram showing a state in which the front end lower surface of the tire-constituting strip-shaped material is held by a first holding unit;
It is an explanatory view showing the state where it moved to the lower press-fitting position of the tire building drum in the state where it was adsorbed and held by the knit .

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

FIG. 7 is an explanatory view showing a state where winding of a tire-constituting belt-shaped material around a tire building drum is completed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tire forming drum 2 Conveyor 13 Crimping raising / lowering means 14 First handle
Holding unit 15 Second gripping unit W Tire-constituting strip-shaped material Wa Lower surface of front end of tire-constituting strip-shaped material Wb Rear lower surface of tire-constituting strip-shaped material

Claims (2)

(57) [Claims] 1. A first gripping unit movably disposed along a transport conveyor on a lower surface of a front end of a tire-constituting strip-shaped material cut to a fixed length substantially corresponding to a circumferential length of a tire forming drum.
Given a step of holding suction knit, the tip of the suction holding tire construction material web at first gripping unit, in conjunction with the driving of the transport conveyor to the tire building drum side
A second gripping unit capable of moving a rear end lower surface of the tire-constituting strip-shaped material together with a conveyor.
A step of holding suction Time and first and second gripping units
The belt-shaped material constituting the tire in conjunction with the drive of the conveyor
To the crimping position below the tire building drum
That process and, to increase the tip end side of the transport conveyor, the transfer to step the leading end of the tire constituting band-shaped material to a tire molding drum, a rear end lower surface of the tire component material web of the second gripping unit
While holding adsorbed bets, interlocking with the driving of the conveyance conveyor
And with attaching sequential around the tire building drum, the method of supplying the tire component strip material characterized by comprising a step of joining the front end and the rear end of the tire component material band. 2. A conveyor for transporting a tire-constituting belt-shaped material cut to a fixed length substantially corresponding to the circumference of the tire building drum is provided below the tire building drum. crimping elevating means for elevating toward the forming drum provided on the side, on the transfer conveyor, can be moved or stopped together with the conveying conveyor, and a first bunch for attracting and holding the leading end lower surface of the tire component material band
And lifting unit, feeder tire component material band, characterized in that the rear end lower surface of the tire component material band is provided and a second gripping units for holding suction.