JPH10128869A - Method and apparatus for sticking band-like material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve productivity by simplifying and automating an apparatus wherein a band-like material in which a reinforcing cord is laminated by crossing is supplied and stuck. SOLUTION: When a band-like material is stuck onto a forming drum F via a sticking conveyor 3 so that band-like materials on which reinforcing cord is laminated crossing each other, the bandlike materials W1, W2 to be crossed are stuck onto the forming drum by reversing a rotary direction of the forming drum F to each other, and the band-like material W1 is fixed by pressure onto the forming drum F side by transferring the sticking conveyor 3 to the forming drum F side. The band-like material W2 is transferred to the molding drum F side by holding a tip part with a tip holding means 5. Thereafter, by fixing by pressure successively the band-like material W2 onto the forming drum F with a pressure fixing roll 61 of a pressure fixing means 6, the band-like material W2 is automatically stuck onto the forming drum F.

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 attaching a strip material, and more particularly, to a method for supplying and attaching one piece of material, the reinforcing cord between the laminated strip materials is used. The present invention relates to a method and an apparatus for attaching a band-shaped material to be attached on a forming drum so as to intersect.

[0002]

2. Description of the Related Art For example, in a process of manufacturing a tire, there is a step of attaching a bead reinforcing material having reinforcing cords arranged so as to be inclined with respect to the circumferential direction of a tire on a rubber sheet wound on a forming drum. . For example, the chafer of a heavy-duty pneumatic tire used as the bead portion reinforcing material has at least two layers of reinforcing material crossed by an inclined reinforcing cord in order to sufficiently function as a reinforcing layer of the bead portion. I am trying to install it.

[0003] In the pasting of the reinforcing material as described above, a pair of supply sections for supplying a long strip-shaped material in which the inclination direction of the reinforcing cord is reversed is provided separately from that for the normal direction, The reinforcing material was stuck on the forming drum via each sticking conveyor. As described above, conventionally, it is necessary to provide a device for supplying and attaching each of the belt-shaped materials in which the inclination of the reinforcing cord is opposite to the normal direction,
Therefore, a large space for installing it is necessary,
In addition, equipment costs have also increased, and improvements have been strongly demanded.

As a countermeasure against this, Japanese Patent Laid-Open No.
No. 89344 has been proposed. Although the same belt-shaped material is used and the drum is rotated in the normal and reverse directions to simplify the equipment, the end of the belt-shaped material is fixed in accordance with the rotation direction. Positioning on the drum could only be done by hand, resulting in poor workability and little improvement in productivity. Further, in order to avoid overlapping of both side edges due to the same band-shaped material, it has been impossible to paste them with being shifted in the width direction.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method in which a band-shaped material is supplied to one of each of a plurality of band-shaped materials in which reinforcing cords are stacked so as to intersect each other. An object of the present invention is to provide a method and an apparatus for attaching a strip-shaped material, which enables automatic attachment by an attaching apparatus, thereby reducing installation space and equipment costs and improving productivity. is there.

[0006]

In order to achieve the above object, the present invention provides a method of attaching a band-like material, wherein a reinforcing cord is arranged obliquely with respect to a longitudinal direction while rotating a forming drum. When pasting on a forming drum via a pasting conveyer so that the reinforcing cords intersect with each other, the same cord is used, and the intersecting strips are In addition to pasting on the forming drum with the rotation direction of the forming drum reversed,
One band-shaped material is pressed against the forming drum by moving the pasting conveyor toward the forming drum, and the other crossed band-shaped material is held at the tip end of the band-shaped material by tip holding means, and After that, the tip of the strip-shaped material is sequentially pressed on a forming drum by a pressing roll of a pressing unit, so that the material is automatically attached to the forming drum.

Further, in the strip material sticking apparatus of the present invention, a sticking conveyor for sticking the strip material to the forming drum is provided so as to be able to advance and retreat with respect to the forming drum, and the forming drum can be rotated in both forward and reverse directions. On the other hand, the upper end of the belt-shaped material conveyed at the transport-side front end of the pasting conveyer is configured so that the upper surface of the conveyed belt-shaped material can be pasted on the forming drum side. A tip holding means movably provided with a holding portion capable of holding a tip portion of the belt-shaped material conveyed to a position facing the attaching conveyor and a position facing the forming drum, and a rotating forming drum. A crimping means having a crimping roll capable of sequentially crimping the belt-shaped material is provided.

[0008] While the upper end of the conveyed belt-shaped material is made to be on the forming drum side at the front end of the conveyer on the conveying side as described above, the conveyer can be pasted on the upper side of the conveyer. Holding means capable of holding the leading end of the strip-shaped material moved to a position facing the conveyor and a position facing the forming drum, and a tip of the strip-shaped material held by the holding portion on the forming drum. In this case, a crimping means for crimping on the forming drum is provided, and the rotating direction of the forming drum is reversed between the intersecting band-shaped materials so as to be stuck on the forming drum. It is not necessary to provide a device for supplying and attaching the material to the belt, just by installing one supply and pasting device, etc., and stack the strip material on the forming drum so that the reinforcing cords intersect. Can be pasted automatically Te. Therefore, the installation space and equipment cost of the apparatus can be greatly reduced, and the productivity can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows an example of a band-like material sticking apparatus according to the present invention. The attaching device includes a supply unit 1 for supplying a long strip material W in which reinforcing cords are arranged obliquely to a longitudinal direction, a festoon 2 for suspending the strip material W unloaded from the supply unit 1, A pasting conveyor 3 for pasting the band-shaped material W conveyed through the festoon 2 onto the forming drum F, and a lower surface of the band-shaped material W conveyed on the pasting conveyor 3 are formed while holding the leading end thereof. A tip holding means 5 for pressing on the drum F, a pressing means 6 for sequentially pressing the band material on the rotating forming drum F, and a fixed length corresponding to the peripheral length of the forming drum F; Cutting means 7 for cutting into pieces
And the strip-shaped material W conveyed on the pasting conveyor 3
And a tip detector 8 for detecting the tip of the target.

The supply section 1 includes a rotatable driving unwind shaft 12 for unwinding a long strip-shaped material W wound on a winding core 11. A take-up core 11 on which a long strip of material W is taken up is attached to the take-out shaft 12, and a take-up shaft 16, which will be described later, is rotated at a constant speed by a motor (not shown). The shaft 12 is rotated to feed the long strip-shaped material W.

On the transport side (forward side of transport) of the supply section 1, a long strip-shaped material W unwound from the winding core 11 is provided.
The two guide rolls 13 and 14 for guiding to the festoon 2 are arranged in front and rear. 15 is a strip material W
Is a liner winding core provided in the case of an unvulcanized reinforcing material or the like in which a reinforcing cord is inclinedly arranged on an unvulcanized rubber used as a tire constituent member.
Is removably attached to a liner winding shaft 16 disposed below.

The rotation of the liner winding shaft 16 causes
The liner 17 interposed between the reinforcing members sent to the liner winding core 15 is collected. Below the guide rolls 13 and 14, one separate roll 18 for separating the liner 17 is provided. The festoon 2 installed between the supply unit 1 and the bonding conveyor 3 has a feeding length (speed) of the band material W unwound from the supply unit 1 and the band material W conveyed by the bonding conveyor 3. A space 21 is provided to absorb the difference and suspends the belt-shaped material W to be conveyed in a U-shaped manner.

The sticking conveyor 3 connected to the festoon 2 includes a drive pulley 32 at a rear end of a long body frame 31 and a driven pulley 33 at a front end of the frame.
And A bracket 34 projecting obliquely downward and forward is provided on the front side of the body frame 31. Guide pulleys 35 and 36 are attached to the front lower end and the rear lower end of the bracket 34, respectively.

A guide pulley 35 provided at the front lower end of the bracket 34 is closer to the forming drum F (conveying side) than the driven pulley 33, and is connected to the driving pulley 32, the driven pulley 33, and the guide pulleys 35 and 36. An endless conveyor belt 37 is wound, and the drive pulley 32 is driven to rotate by a drive motor (not shown) so that the belt-shaped material W is conveyed from the drive pulley 32 through the driven pulley 33 to the guide pulley 35. It has become.

As the adhering conveyor 3 advances, the conveyor belt 3 between the driven pulley 33 and the guide pulley 35
7 can be pressure-bonded to the forming drum F, so that the upper end of the conveyed band-shaped material W on the conveying-side front end of the attaching conveyor 3 can be attached to the forming drum. Has become. On the lower side of the body frame 31, a moving means 40 for moving the pasting conveyor 3
Are arranged. The moving means 40 has a moving member 43 which can reciprocate in the conveying direction of the attaching conveyor 3 via a pair of left and right guide rails 42 extending in the conveying direction on the base frame 41 erected. 43
A leg 38 projecting below the body frame 31 is slidably mounted on the upper side via a pair of front and rear guide rails 44 extending in a direction perpendicular to the conveying direction, and is attached by a drive motor (not shown). Numeral 3 can reciprocate in the transport direction and also in the direction perpendicular to the transport direction (the rotation axis direction of the forming drum).

The tip holding means 5 includes a body frame 31.
Has a rotating shaft 52 horizontally arranged between support members 51 erected on both sides of the front end of the shaft. At the center of the rotating shaft 52, a lifting cylinder 53 is suspended via a bracket 59. And a cylinder rod 5 extending downward.
At the lower end of 3a, there is provided a holding portion 54 for sucking and holding the tip of the band-shaped material W.

The holding portion 54 includes a suction main body portion 54a formed in a block shape and a rotatable free roll 54b connected to the rear side thereof.
A plurality of suction holes 55 are formed, and the other ends of the suction holes 55 are connected to a vacuum source (not shown). An elevating cylinder (elevating means) 53 fixed to a bracket 59 whose upper end is rotatably connected to a pivot shaft 52 has a pivot shaft 5
2 is mounted so as to be swingable back and forth in the conveying direction of the band-shaped material with the pivot shaft 2. To the rear end of the bracket 59, the front end of a telescopic rod 56a of a first oscillating cylinder (first oscillating means) 56, which is provided horizontally in the front and rear direction of the belt-shaped material W, is connected.

The rear end of the swinging cylinder 56 is connected to a bracket 58 projecting on a supporting frame 57 provided at the center of the conveyer 3 so as to straddle over the conveyor belt 37, By the operation of the swing cylinder 56, as shown in FIG. 2, the holding portion 54 can reciprocate between a position facing the conveyor belt 37 and a position facing the forming drum F.

The crimping means 6 has a crimping roll 61 disposed above the front end of the bonding conveyor 3 so as to face the forming drum F. The pressure roll 61 is rotatably supported by a distal end of an arm 62 that is pivotally connected to the rotation shaft 52. At the base end of the arm 62, a bracket 63 protrudes downward so as to intersect with the direction in which the arm 62 extends, and a second swing cylinder laterally provided at the protruding end in the front-rear direction of the belt-shaped material W. (Second swinging means) The distal end of a rod 64a that expands and contracts is connected.

The rear end of the oscillating cylinder 64 is connected to a bracket 65 projecting from the supporting frame 57,
By the operation of the swing cylinder 64, as shown in FIG. 2, the pressing roll 61 comes into contact with the forming drum F to press the band-shaped material W onto the forming drum F, and a standby position separated from the forming drum F. And can be moved back and forth. The crimping means 6 and the tip holding means 5 can move forward and backward and move left and right together with the adhering conveyor 3.

The cutting means 7 is installed at the rear side of the adhering conveyor 3, and a cutting blade (not shown) travels along the reinforcing cord of the strip material so as to cross the strip material W.
Is cut into a fixed length corresponding to the circumference of the forming drum F. The tip detector 8 is located above the conveyor belt 37 of the pasting conveyor 3,
7 protrudes from the rear end. Reference numeral 9 denotes left and right centering guides for centering the belt-shaped material W conveyed on the conveyor belt 37.

Hereinafter, taking the reinforcing material in which the liner 17 is adhered to the strip material W as an example, the attaching method of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. First, a long strip-shaped material W in which the reinforcing cords are arranged in an inclined manner only on one side in the longitudinal direction is sent out from the winding core 11 of the supply unit 1, and the leading end is passed to the adhering conveyor 3 side. As shown in FIG. 12, the festoon 2 is suspended. In this state, a drive motor (not shown) of the supply unit 1 and the adhering conveyor 3 is operated to convey the conveyor belt 37 of the adhering conveyor 3 and pulleys of the conveyor 3 projecting obliquely downward as shown in FIG. The leading end of the band-shaped material W is transported to the lower attachment position of the front side surface between 33 and 35. Meanwhile, the liner 17 adhered to one surface of the band-shaped material W
Are sequentially wound around the winding core 15.

When the belt-like material W comes to the sticking position, the conveyance of the belt-like material W is stopped, and by the operation of the moving means 40, the sticking conveyor 3 moves forward toward the forming drum F as shown by the arrow in FIG. The tip of W is pressed against the surface of the forming drum F. Next, in synchronization with the clockwise rotation of the forming drum F, the belt-shaped material W is attached to the conveyor belt 3 of the conveyer 3.
7 and the front end of the long strip-shaped material W starts to be attached to the forming drum F.

When the leading end of the band-shaped material W passes through the detection point of the leading end detector 8 and is transported by a length corresponding to the circumferential length of the forming drum F, the transport is temporarily stopped as shown in FIG. The tip of the long strip-shaped material W is cut to a fixed size by the means 7. When the strip-shaped material W (absorbed by the tip suction unit not shown) upstream of the cutting line is separated upward from the pasting conveyor 3, the conveyor of the pasting conveyor 3 is synchronized with the clockwise rotation of the forming drum F. The belt 37 is run, and the band-shaped material W1 cut to a fixed size as shown in FIG.

Next, as shown by the arrow in FIG. 8, the pasting conveyor 3 is retracted to the original standby position, and the long strip material W is returned to the original position. Subsequently, the adhering conveyor 3 is operated, and the leading end of the long strip-shaped material W is transported on the conveyor belt 37 to the upper adhering position on the front end side near the pulley 33 as shown in FIG. After the conveyance is stopped, the elevating cylinder 53 of the tip holding means 5 is operated, and the rod 5
3a is extended, and the holding portion 54 that has been lowered is brought into contact with the front end portion of the belt-shaped material W on the conveyor belt 37, and the front end portion is suction-held. After the holding section is raised, the swing cylinder 56 is extended, and the holding section 54 moves to the facing position indicated by the two-dot chain line in FIG.

Subsequently, by the operation of the moving means 40, the bonding conveyor 3 moves the forming drum F as shown by the arrow in FIG.
The belt-like material W is moved forward by a predetermined amount in the direction of the rotation axis of the forming drum that is orthogonal to the side, and then the leading end of the band-shaped material W held by the holding portion 54 is pressed against the forming drum F.
The swing cylinder 64 of the crimping means 6 is operated, and the rod 6
Due to the reduction of 4a, the pressing roll 61 is moved from the standby position indicated by the solid line in FIG. 2 to the pressing position indicated by the alternate long and two short dashes line, and the front end of the band-shaped material W held by the holding portion 54 is pressed against the forming drum F. I do.

When the pressing roll 61 presses and holds the leading end of the belt-shaped material W, the suction holding by the holding section 54 is released.
The rod 53a of the lifting cylinder 53 contracts,
4 is separated from the belt-shaped member W. The forming drum F and the adhering conveyor 3 are operated in synchronization with each other in a state of being pressed by the pressing roll 61. At this time, the forming drum F rotates counterclockwise opposite to the above clockwise rotation. As shown in FIG. 10, the leading end of the band-shaped material W is pasted in a reverse direction to the lower fixed-length band-shaped material W1. Therefore, in the belt-shaped material in which the reinforcing cords are arranged inclined with respect to the longitudinal direction, the reinforcing cords intersect between the laminated inner and outer belt-shaped materials.

In the same manner as described above, when the leading end of the band-shaped material W passes through the detection point of the leading end detector 8 and is transported by the length corresponding to the circumferential length of the forming drum F, the transport is temporarily stopped. Then, the leading end of the long strip-shaped material W is cut to a fixed size by the cutting means 7. The strip-shaped material W2 cut to the fixed size is shifted in the width direction from the strip-shaped material W1 by the synchronous operation of the forming drum F and the attaching conveyor 3, and as shown in FIG. W1
It is pasted one round while being pressed on the pressure roll 61.

When the sticking is completed, the pressing means 6 returns the pressing roll 61 to the standby position by the operation of the swing cylinder 64, and the tip holding means 5 reduces the rod 56a of the swing cylinder 56, and Conveyor 3 pasting 54
To return to the position facing. Pasting conveyor 3,
Retreat as shown in FIG. Thus, in the present invention,
While rotating the forming drum F, the reinforcing cords were arranged obliquely with respect to the longitudinal direction via the conveyor 3 attached to the forming drum F, and the strip-shaped materials W1 and W2 cut to a fixed size were laminated with the reinforcing cords. When the band-shaped materials W1 and W2 are pasted so as to cross each other, the tip of the band-shaped material W is automatically supplied to the forming drum F and cut into a predetermined length.
Since the rotating direction of the forming drum F is applied to the forming drums F with the band materials W1 and W2 to be laminated, the apparatus is configured to supply and apply one of the band materials W to the forming drum F. Can be attached on the forming drum F. Therefore, it is possible to significantly reduce the installation space and the equipment cost and to improve the productivity.

In the present invention, in the above-described embodiment, the length of the adhering conveyor 3 is shortened to further reduce the space. Is cut after the start of sticking to the forming drum F, so-called run-cut type cutting method,
As shown in FIG. 13, the transport distance of the attaching conveyor 3 is ensured to be longer than the lengths of the strip-shaped materials W1 and W2 of the fixed-size cutting, and before the tip of the long strip-shaped material W is attached to the forming drum F. Alternatively, the fixed length cutting may be performed on the attaching conveyor 3.

Further, in the above embodiment, after the forming drum F is rotated clockwise and the band-shaped material is attached, the forming drum F is rotated counterclockwise by the tip holding means and the pressing means to form two layers. Although the belt-like material is attached so that the reinforcing cords intersect, the reverse may be applied. The present invention, in particular,
An unvulcanized rubber used as a tire component is laminated with a bead reinforcing material (for example, a chafer disposed on a bead portion of a heavy-duty pneumatic tire) in which reinforcing cords are aligned in one direction and buried obliquely. It can be suitably used when pasting on a forming drum.

[0032]

As described above, according to the present invention, when the strip-shaped material is pasted on the forming drum so that the reinforcing cords intersect with each other, the strip-shaped material is attached to each one.
Since it can be automatically pasted on the forming drum by a device that supplies and pastes the table, the installation space and equipment cost of the device can be significantly reduced, and the productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a front explanatory view schematically showing an example of a band-like material sticking apparatus according to the present invention.

FIG. 2 is an enlarged front view of a main part of FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an explanatory front view showing a method for attaching a belt-shaped material according to the present invention.

FIG. 5 is an explanatory front view showing a method of attaching a belt-shaped material according to the present invention.

FIG. 6 is an explanatory front view showing a method for attaching a belt-shaped material according to the present invention.

FIG. 7 is an explanatory front view showing a method for attaching a belt-shaped material according to the present invention.

FIG. 8 is an explanatory front view showing a method of attaching a belt-shaped material according to the present invention.

FIG. 9 is an explanatory front view showing a method for attaching a belt-shaped material according to the present invention.

FIG. 10 is an explanatory front view showing a method for attaching a belt-shaped material according to the present invention.

FIG. 11 is an explanatory front view showing a method of attaching a belt-shaped material according to the present invention.

FIG. 12 is an explanatory front view showing a method for attaching a belt-shaped material according to the present invention.

FIG. 13 is an explanatory front view schematically showing another example of the band-like material sticking apparatus of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Supply part 2 Festoon 3 Sticking conveyor 5 Tip holding means 6 Crimping means 7 Cutting means 8 Tip detector 37 Conveyor belt 40 Moving means 53 Lifting cylinder 54 Holding part 55 Suction hole 56 First swing cylinder 61 Crimping roll 64 First 2 Swing cylinder F Forming drum W, W1, W2 Strip material

Claims (6)

[Claims] 1. A belt-shaped material cut to a fixed size is wound while rotating a forming drum so that reinforcing cords are arranged obliquely with respect to a longitudinal direction, and the reinforcing cords intersect with each other. At the time of pasting on the forming drum via the pasting conveyer, using the same material, the direction of rotation of the forming drum is reversed between the intersecting strip-shaped materials, The material is pressed to the forming drum side by moving the pasting conveyor to the forming drum side, and the other intersecting band-like material is moved to the forming drum side while holding the leading end of the band-like material by tip holding means. After that, the tip end of the band-shaped material is sequentially pressed on a forming drum by a pressing roll of a pressing means, so that the band-shaped material is automatically pasted on the forming drum. Method. 2. A sticking conveyor for sticking a band-shaped material to a forming drum is provided so as to be able to advance and retreat with respect to the forming drum.
The forming drum is configured to be rotatable in both forward and reverse directions, and the upper surface of the belt-shaped material conveyed from the conveying-side front end of the adhering conveyor is configured to be stuck on the forming drum side so that the conveyer can be conveyed. Above the side front end, a holding portion capable of holding the leading end of the band-shaped material conveyed on the pasting conveyor is provided so as to be movable between a position facing the pasting conveyor and a position facing the forming drum. An apparatus for attaching a strip-shaped material, comprising a tip holding means and a pressure-bonding means having a pressure-bonding roll capable of sequentially pressing the strip-shaped material onto a rotating forming drum. 3. The apparatus according to claim 2, wherein said tip holding means and said pressure bonding means are movable forward and backward together with said attaching conveyor. 4. The apparatus according to claim 2, wherein the attaching conveyor is provided so as to be movable in a rotation axis direction of the forming drum. 5. The apparatus according to claim 2, further comprising a cutting means for cutting the band-shaped material into a fixed length at a rear end side of the conveyance of the pasting conveyor. 6. A sticking apparatus for a strip-shaped material according to claim 2, wherein a supply section for supplying a long strip-shaped material is connected to said sticking conveyor via a festoon for suspending the strip-shaped material. .