JP2000141510A - Ply forming apparatus and tire forming apparatus using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably reduce size by excluding a special purpose transfer implement and a second conveyor in a ply forming apparatus. SOLUTION: The ply forming apparatus comprises a top texture cutting means 9 for cutting a top texture T0 on a feeding conveyor 7 rewound from a top texture roll holding means 6 at a cutting position Q, a drawing conveyor 10 independently driven and drawing a cut piece T of the position Q to a center reference position of coupling by extending one non-cutting edge Te from a conveyor side edge 10e, and a coupling means 11 for superposing the non-cutting edge Pe of a waiting coupled tire ply P on the piece T of the center reference position and pressurizing the superposed part to couple the part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ply forming apparatus for forming a belt-like tire ply from a top counter and a tire forming apparatus using the same.

[0002]

2. Description of the Related Art Conventionally, in the tire forming process, when a carcass ply piece is wound around a tire forming drum, a long belt-shaped tire ply which is previously wound up in a roll shape and stored is used, and this tire ply is formed into a drum circumferential length. The material is supplied to the tire building drum while being sequentially cut into corresponding lengths.

On the other hand, the ply forming apparatus for a tire ply generally holds a top anti-T0 roll-shaped body Tr in which cords are arranged in parallel in a longitudinal direction, as shown in FIG. The top counter T0 unwound from the roll Tr is cut into cut pieces T having a length L1 at a cutting position b on the first conveyor a. The cut piece T on the first conveyor a is, for example, a suction tool c such as a vacuum.
1 is transferred to the second conveyor d by a dedicated transfer tool c using the first transfer tool c. The second conveyor d conveys the transferred cut piece T to the position overlapping with the non-cut edge Pe of the connected tire ply P that has been standby in advance on the downstream side. Transported downstream in the direction. The non-cut edges Pe and Te overlapping each other are connected to each other by pressing them together, and the tire plies P sequentially connected are wound up and stored as a roll-shaped body Pr through the festoon f. Has been put into the tire molding process.

As described above, since the conventional ply forming apparatus is positioned as a dedicated machine for mass-producing tire plies, it is necessary to increase the productivity. For example, the top ply is required to be 50 to 70 m / min. Rewinds at a relatively high speed and the top used is 1400-1600 in width.
The apparatus itself is also large and has high performance, for example, a device having a length of 400 to 800 m / mm and a length of 400 to 800 m is used. Therefore, there is an advantage that a tire ply can be supplied to a plurality of tire building drums.

[0005]

However, on the other hand, in order to operate this ply forming apparatus efficiently, it is necessary to install a plurality of tire building drums per ply forming apparatus. There is a problem that the scale of the tire production plant becomes large.

[0006] Further, as described above, it is necessary to supply the tire ply to each tire building drum once after winding it on a roll-shaped body. The ply width (length L1) varies depending on the cross-sectional shape and cross-sectional size of the ply.
Therefore, when molding tires, it is necessary to prepare and store in advance various types and a large number of rolls of tire plies, resulting in a significant increase in intermediate stock, impairing the effective use of materials and storage. There is also a problem that the space is expanded and management work is increased.

Therefore, one object of the present invention is to form a first conveyor of a conventional apparatus by a transitable and independently driven delivery conveyor and a drawer conveyor, and to cut one side of one side edge of the drawer conveyor. It is an object of the present invention to provide a ply forming apparatus which can eliminate a dedicated transfer tool and a second conveyor in a conventional apparatus, respectively, and can achieve a significant miniaturization, based on protruding a non-cut edge of the ply.

Another object of the present invention is to form a band-shaped tire ply sequentially from the top in accordance with the operating condition of the tire building drum, based on the fact that the miniaturized ply forming apparatus is provided in parallel with each tire building drum. It is possible to supply the tires directly to the tire building drum while preventing the production of intermediate stocks in the form of rolls, greatly reducing the storage space and management work, and reducing the size of the tire production plant. It is an object of the present invention to provide a tire forming apparatus that can solve the above-described problems, for example, can suppress the problem.

[0009]

In order to achieve the above object, the invention of the ply forming apparatus according to the first aspect of the present invention is directed to a ply forming apparatus in which a long ply for forming a tire ply, in which cords arranged in parallel are coated with rubber, is provided with a predetermined length. A cut piece cut at a length L1 is
A ply forming apparatus that forms a belt-shaped tire ply by connecting the non-cut edges of the cut pieces to form a belt-like tire ply, wherein the top anti-roll holding means holds the top counter so as to be rewound. A feeding conveyor for rewinding and feeding back the top sheet, and cutting the fed top sheet in the width direction at a cutting position to obtain a predetermined length L
1, the top anti-cutting means for forming the cut piece, the cut piece at the cutting position is arranged so as to be able to be connected to the delivery conveyor and can be driven independently, and the one non-cut edge of the cut piece is A draw-out conveyor that protrudes from the side edge of the conveyor and pulls out to the center reference position for connection.
Along with the one non-cutting edge of the cut piece at the center reference position, the non-cutting edge of the connected tire ply that is made to stand by facing the non-cutting edge is overlapped, and the overlapping portion is pressed. And connecting means for connecting to each other.

According to a second aspect of the present invention, the tire forming apparatus and the tire ply formed by the ply forming apparatus are cut into carcass ply pieces having a length corresponding to the circumference of the tire forming drum. Ply cutting means;
And a tire forming drum around which the cut carcass ply piece is wound.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a tire forming apparatus 1 of the second invention configured using the ply forming apparatus 2 of the first invention.

In FIG. 1, a tire forming apparatus 1 includes a ply forming apparatus 2 and a tire ply P formed by the ply forming apparatus 2 formed into a carcass ply piece P1 having a length corresponding to the circumferential length of a tire forming drum 3. It has a ply cutting means 4 for cutting and the tire building drum 3 around which the cut carcass ply piece P1 is wound.

The ply forming apparatus 2 cuts a long top anti-T0 made of rubber coated cords arranged in parallel in the length direction at a predetermined length L1. The band-shaped tire ply P is formed by connecting the cut edges Te to each other.

The ply forming apparatus 2 includes a top anti-roll holding means 6, a delivery conveyor 7, a top anti-cutting means 9, a draw-out conveyor 10, and a connecting means 11.

The top anti-roll holding means 6 has a supporting portion 13 for rotatably supporting a core of a roll Tr formed by winding the top anti-T0 with a peeling liner 12 therebetween. The top anti-T0 can be rewound from the roll Tr by rotating the core. The support 13
In this example, the installation location H under the delivery conveyor 7
It is provided on a movable trolley 15 that can travel along a guide rail extending between a storage place (not shown) for the roll-shaped body Tr.

Here, since the ply forming device 2 only needs to form the tire ply P in accordance with the tire forming speed of one tire forming drum 3, the forming speed can be kept low. It is possible to use a top anti-T0 that is as narrow and short as about 700 mm, which is about half or less of the conventional one. As a result, the roll-shaped body Tr itself becomes small and lightweight, and the installation location H is changed to the conveyor 7.
It is possible to set the lower vacant space, and furthermore, the belt width of each of the conveyors 7 and 10 can be reduced by half according to the width of the top anti-T0, so that the occupied area of the ply forming device 2 can be reduced.

The feed-out conveyor 7 is a belt conveyor connected from the lower top anti-roll holding means 6 via a festoon 16, and feeds out the rewinded top anti-T0 downstream in the transport direction.

The top anti-cutting means 9 is provided at a cutting position Q near the downstream end of the delivery conveyor 7,
The cut-out piece T having a predetermined length L1 is formed by cutting the fed top counter-T0 in the width direction.

As shown in FIG. 2, in this embodiment, the top anti-cutting means 9 comprises a cutter receiver 17 for allowing the top anti-T0 to float from the conveying surface and passing the same, and a cutting blade 19 such as a roller cutter in the width direction. And a cutting tool 20 which is held so as to be able to run freely. The cutter receiver 17 has a substantially triangular cross-section having a bottom surface arranged along the conveying surface, guides the top anti-T0 along two slopes, and has a groove at the top of which the cutting edge of the cutting blade 19 passes. 17A is recessed. Further, the cutting tool 20 is provided with a guide 21 that straddles the delivery conveyor 7.
And a traveling body 22 that can be guided and guided by this guide 21
The cutting blade 19 is attached to the traveling body 22. Further, the traveling body 22 is provided with a cutter presser 23 for pressing the top counter T0 against the cutter receiver 17.

The draw-out conveyer 10 is a belt conveyer which can be connected to the feed-out conveyer 7, and is driven in the same conveying direction as the feed-out conveyer 7 and independently of each other. Therefore, by driving the drawer conveyor 10, as shown in FIGS. 3A and 3B, only the cut piece T at the cutting position Q can be independently moved away from the top counter T0. This cut piece T
To the center reference position J of the connection. At this time, at the center reference position J, the cut piece T needs to have one non-cutting edge Te protruding from the conveyor side edge 10e of the drawer conveyor 10, whereby the drawer conveyor 10 Thus, the function corresponding to the conventional transfer tool c and the second conveyor d is exhibited. The protruding portion 25A of the cut piece T constitutes an overlapping portion 25 for connection.

Here, the "center reference position J" means a position through which the center line of the drum width of the tire forming drum 3 passes, and "pulling out the cut piece T to the connection center reference position J" means cutting. This means that the piece T is pulled out to a position where the center line Jt in the length direction coincides with the center reference position J. Therefore, in the drawer conveyer 10, among the cut pieces T of the required size, the cut piece T having the maximum value of the length L1
If the conveyor has at least a conveyor length that exceeds the total length (L1), it is possible to pull out to the center reference position J. That is, the drawer conveyor 10 can be designed to be compact.
The sum of the conveyor lengths of 0 and the feed-out conveyor 7 can be reduced to the length of the conventional first conveyor a (shown in FIG. 7).

Next, the connecting means 11 is provided on one non-cut edge Te of the cut piece T at the center reference position J,
The non-cut edges Pe of the connected tire plies P that are made to stand by facing the non-cut edges Te are overlapped, and the overlap portions 25 are pressurized and connected to each other.

This connecting means 11 is shown in FIGS. 4 (A) and 4 (B).
As shown in FIGS. 6A and 6B, the support table 26 having the receiving surface 26S for receiving the lower surface of the protruding portion 25A of the cut piece T, and the tire ply P on standby are placed on the upstream side (the cut piece T). Back feed device 2 that forms the overlapped portion 25 by moving back by a small distance K to the side facing the
7 and a crimping 29 tool that presses the overlapping portions 25 and connects them together.

The back feeder 27 has a guide plate 30 which can slide upstream on the support table 26 to a position close to the non-cutting edge Te. The guide plate 30 has an upper surface. Tire ply P is cut into pieces
An inclined guide surface 30S for guiding upward is formed at the upstream end.

The back feeder 27 includes upper and lower holding plates 31U and 31 which can hold the tire ply P vertically.
L, and the slidable tire ply P can be returned by sliding to the upstream side independently of the guide plate 30. At this time, the end guide 32 descends in advance on the protruding portion 25A, abuts on the tire ply P returning, and positions the non-cut edge Pe thereof. The lower holding plate 31L is disposed on the guide plate 30, and the tire ply P passes along the upper surface thereof. The upper holding plate 31U is held so as to be able to move up and down, and holds the tire ply P at its lowered position.

Further, the crimping 29 tool is provided with the non-cut edge Pe.
Having a press plate 33 descending in the positioning state of
By pressing the overlapping portion 25 between the press plate 33 and the receiving surface 26S, the both are connected to each other. In this example, the press plate 33 is provided with the end guide 32.
And move up and down along the downstream side surface.

FIGS. 4A and 4B show the sliding state of the guide plate 30. FIG. FIG. 5
(A) and (B) show that the tire ply P is guided on the cut piece T and the non-cut edge Pe is determined by the operation of the holding plates 31U and 31L, and the press plate 3
3 shows a state in which the overlapping portion 25 is connected by the lowering of the position 3. FIGS. 6A and 6B show a state in which the guide plate 30 and the holding plates 31U and 31L return as the press plate 33 rises, and the connected tire ply P is transferred to the downstream side. I have.

A transport conveyor 34 for transporting the connected tire plies downstream is provided downstream of the connecting means 11.
However, in this example, the drive roll 35 and the festoon 36
Is provided via

A ply cutter 4 is provided on the conveyor 34, and the car ply piece P1 having a length corresponding to the circumference of the tire forming drum 3 is provided.
Cut into pieces. The ply cutting tool 4 has substantially the same configuration as the top anti-cutting tool 20, and has a cutter receiver 17 for allowing the tire ply P to float from the conveying surface and pass therethrough, and a cutting tool for holding the cutting blade 19 so as to be able to travel in the width direction. 20.

When the next tire ply P is transported to the cutting position, the transport conveyor 34 can also send out the already cut carcass ply piece P1 from the end of the conveyor to the tire forming drum 3, and also functions as a ply servicer. . As the tire building drum 3, a drum having the same structure as that of the related art can be used, and the carcass ply piece P1 sent out is wound by the rotation thereof.

As described above, the ply forming apparatus 2 is provided with a drawer conveyor 10 which is driven independently of the feed conveyor 7 and can be connected and connected. The side edge 10e is formed inside so that the non-cutting edge Te of T protrudes. Accordingly, by independently driving the drawer conveyor 10, a function corresponding to the conventional transfer tool c and the second conveyor d, that is, separating the cut piece T from the top counter T0 and transferring the cut piece T to the connection position. You can do it.

Further, the drawer distance to the center reference position J, which is the connection position, can be set short, so that the conveyor length of the drawer conveyor 10 itself can be reduced. Therefore, the ply forming device 2 can be significantly reduced in size, in combination with the elimination of the conventional transfer tool c and the second conveyor d. Further, as described above, when the ply forming device 2 is incorporated into the tire forming device 1, a narrow and short top anti-T0 can be used, so that the belt width of each of the conveyors 7, 10 can be reduced. Thus, the occupied area of the ply forming device 2 can be further reduced, and the size of the tire production factory can be reduced.

Further, since only the necessary amount can be directly supplied to the tire building drum 3 while being sequentially formed from the top, the occurrence of intermediate stock in the tire ply P can be prevented. Therefore, the liner, the storage cart, the storage space, the storage management work, and the like related to the intermediate stock are not required, and the related cost can be significantly reduced.

The ply forming device 2 is provided with connecting means 11, for example, on both sides of the drawer conveyor 10, and has a length L1.
It is also possible to adopt a configuration in which two types of cut pieces T, which are cut by changing the length, are alternately drawn to the center reference position J. At this time, a tire ply to which one type of cut piece T is connected can be formed from one side edge side, and a tire ply to which another type of cut piece T is connected can be formed from the other side edge side.

[0035]

According to the ply forming apparatus of the first aspect of the present invention, a drawer conveyor that can be connected and driven independently is connected to the downstream side of the feed conveyor, and one of the cut pieces is cut from one side edge of the drawer conveyor. Since the non-cutting edge protrudes from the top, the cut piece can be separated from the top and transferred to a predetermined connecting position, eliminating the need for the conventional transfer device and the second conveyor, greatly reducing the size and weight. Can be achieved.

In the tire forming apparatus according to the second aspect of the present invention, since the miniaturized ply forming apparatus is provided alongside the tire forming drum, only the required amount of the tire ply is formed sequentially from the top side. Can be supplied directly to the drum. Therefore, the intermediate stock of the tire ply is not required, and the liner, the storage cart, the storage space, the storage management work, and the like related thereto can be eliminated, and the size of the tire production factory can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a top anti-cutting means.

FIGS. 3A and 3B are plan views showing a state in which a cut piece is pulled out.

FIGS. 4A and 4B are cross-sectional views illustrating a series of operations of each component in a connecting unit.

FIGS. 5A and 5B are cross-sectional views illustrating a series of operations of each component in the connecting means.

FIGS. 6A and 6B are cross-sectional views illustrating a series of operations of each component in the connecting means.

FIG. 7 is a schematic plan view illustrating a conventional ply forming apparatus.

[Explanation of symbols]

 1. Tire forming device 2. Ply forming device. REFERENCE SIGNS LIST 3 tire forming drum 4 ply cutting means 6 top anti-roll holding means 7 sending-out conveyor 9 top anti-cutting means 10 drawer conveyor 10 e conveyor side edge 11 connecting means 25 overlapping portion J center reference position P tire ply P1 carcass ply piece Q cutting position T0 Top anti-T Cut piece Te Non-cut edge of cut piece

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F212 AA45 AC03 AH20 VA11 VA12 VD16 VL02 VM02 VM03 VM06 VP28

Claims (2)

[Claims] 1. A cut piece obtained by cutting a long top of a parallel-arranged cord covered with rubber for forming a tire ply at a predetermined length L1 is connected to each other at a non-cut edge of the cut piece. A ply forming apparatus for forming a belt-like tire ply, comprising: a top anti-roll holding means for holding the top counter so that the top counter can be rewound; a feeding conveyor for rewinding and feeding the top counter from the top counter roll holding means; A top anti-cutting means for forming the cut piece of a predetermined length L1 by cutting the cut top in the width direction at a cutting position, which is arranged so as to be able to connect to the delivery conveyor and can be driven independently. A cutting piece for pulling out the cut piece at the cutting position to a center reference position of connection by causing one non-cut edge of the cut piece to protrude from the side edge of the conveyor. Bear, and the one non-cutting edge of the cut piece at the center reference position, while overlapping the non-cutting edge of the connected tire ply that is made to stand by facing the non-cutting edge, and A ply forming apparatus comprising: connecting means for connecting to each other by applying pressure. 2. A ply forming apparatus according to claim 1, ply cutting means for cutting a tire ply formed by the ply forming apparatus into carcass ply pieces having a length corresponding to the circumference of a tire forming drum, and the cutting. A tire forming drum for winding the obtained carcass ply piece.