JPS60229735A - Method and apparatus for cutting and joining of rubberized cloth - Google Patents

Abstract

PURPOSE:To raise the productivity of rubberized chlothes by preventing the joining bias of rubberized clothes by a method in which rubberized clothes cut at a given angle are moved by a slight amount while being lowered and joined with the rear portions of the rubberized clothes cut in the previous stage. CONSTITUTION:A rubberized cloth 6a is sent out by a material sender 1 and held by holders 17 and 16. A supporting base 2 is raised, the grooved part 36 of a cutter 3 is lowered, and a blade 32 is reciprocally moved to cut the cloth 6a to form given rubberized clothes 6b. By leaving the holding state of the holder 16 intact, the holder 17 is released and slightly moved toward the direction of separating the holders 16 and 17. In this case, the rear end of the initial cloth 6c is raised by the downward movement of a rear end raiser 43, and the tip of the cloth 6b is lapped under the cloth 6c. The rear end of the cloth 6c is joined with the tip of the cloth 6b by a clamper 5. These operations are repeated to manufacture long rubberized clothes with good efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is applicable to rubberized fabrics used in belts, tires, and other rubber products, such as elongated rubberized bias fabrics or fabricated in a similar direction. The present invention relates to a method for cutting and splicing rubberized cloth, which is applied to the production of carcass ply materials for radial tires, and an apparatus used in the method.

<Prior art> To manufacture a long rubberized bias cloth, a given fabric is rubberized, the long rubberized cloth is pulled out from one end and placed on a supply conveyor, and this supply conveyor is used for cutting. Each time the cloth is moved a certain distance, it is cut at a constant angle to obtain a piece of rubberized cloth with a constant size and angle, and the worker manually transfers this piece from the supply conveyor to a splicing table, where the selvedge part of the original rubberized cloth is cut. Join each other at the edges that were.

There are about 1m or more, and the thickness is l8
m or less, therefore, it has extremely poor rigidity and is highly adhesive. In addition, what is important in terms of quality for spliced rubberized fabric is that the overlap at the spliced portion is small and within the required accuracy, and that the cut lines are aligned in a straight line when splicing. In addition, the fabric must not be twisted or wrinkled, and if these requirements are not met, the quality of belts, tires, etc. will be adversely affected and the fabric cannot be put to practical use.

Due to the characteristics and quality requirements of the rubberized fabric described above, the production of the seamed rubberized fabric requires a considerable amount of manual labor, resulting in low efficiency. For this reason, many proposals have been made to mechanize the process. For example, some devices utilize vacuum suction or a vibrating feeder to transfer the cut rubberized fabric pieces from a supply conveyor to a splicing table. According to these, it takes time to transfer, and the large rubberized cloth pieces make the device large.
There were problems such as the need for repositioning by transferring. Concepts that eliminate the need for repositioning among these problems have been previously proposed. For example, Japanese Patent Publication No. 46-18611, Japanese Patent Publication No. 46-18611,
6-42216, etc. However, there are problems in splicing accuracy and efficiency. That is, even after the rubberized fabrics are cut on the supply conveyor, they are fed horizontally by the upper neck of the jointer/veyor and then spliced.

<Problems to be Solved by the Invention> This invention aims to improve splicing accuracy and efficiency by eliminating the need for movement.

Means to Solve the Problem> The cutting and splicing method of rubber-coated fabric of the present invention involves feeding a raw material band-shaped rubber-coated fabric a predetermined length in the longitudinal direction from one end, stopping the end, and moving the rubber-coated fabric in the feeding direction. On the other hand, a first step of sequentially cutting pieces of rubberized cloth at a predetermined width into pieces of rubberized cloth of a predetermined width, and cutting the pieces of rubberized cloth along the cutting direction from a lowered position where the pieces of rubberized cloth are lowered below the above-mentioned stopping position. The second part is moved by a distance approximately corresponding to the length and stopped so that the rear end edge in the moving direction is located at a position corresponding to the predetermined splicing position.
and between the first and second steps, the trailing edge of the rubberized cloth piece that has completed the second step is at the first position or the lowered position of the rubberized cloth that has completed the first step. and a third step of joining the front edge of the rubberized cloth piece in the direction of movement in the second step, and the feeding of the first step and the movement of the second step are performed temporally overlapping. It is characterized by

Cutting the rubberized fabric of the invention used to carry out this method -
The splicing device includes a material delivery device that is driven forward and backward along a predetermined horizontal delivery direction, and has a grip portion that grips the leading end edge of a raw material band-like rubberized cloth and sends it to a predetermined position while moving in the delivery direction; a support stand disposed at a lower position in the advancing/retreating section of the gripping part, the support stand having an elevating drive part and provided to support the fed-out portion of the band-like rubberized fabric in the raised position; A cutting device is provided on the support stand to cut the band-shaped rubberized fabric at a predetermined angle with respect to the feeding direction, and the piece of rubberized fabric cut on the support stand by the cutting device is cut by the cutting device when the support stand is lowered. State C corresponds to a moving device that moves the piece of rubberized cloth on the support stand by a distance that substantially corresponds to the cutting length along the cutting direction, and a front edge position in the moving direction of +ii+ of the movement of the rubberized cloth piece on the support stand by the moving device. It consists of a vertical pressure bonding device installed in the vertical direction.

Function> In the device of the present invention for carrying out the method of the present invention, the gripping portion of the material delivery device grips one end of the rubber band 4 of the raw material, pulls it out to a predetermined position, and supports the pulled out portion. The table rises to support it, is displaced downward by the cutting wave, and is moved by the moving device by a distance that substantially corresponds to the cutting length along the cutting direction, and then stops. The material delivery device performs a delivery operation overlapping the operating time of the moving device. Following this, the support platform is raised and the cutting device is activated. Next, from the rubberized fabric piece that has been cut, press the rubberized fabric piece at the first position or at the position where the support has been lowered, that is, at a position where the rubberized fabric piece does not move horizontally after being cut. The apparatus connects the trailing edge of the rubberized fabric piece that moved first to the front edge of the piece that moves next. Then, it is moved in the horizontal direction by a moving device along with the previous rubberized cloth piece by a distance approximately corresponding to the cutting length in the same manner as described above.

<Example> In FIGS. 1 to 3, reference numeral U indicates a material delivery device, 2 a support stand, 3 a cutting device, 4 a moving device, and 5 a pressure bonding device.

The material delivery device 1 is provided following a material supply section 7 consisting of a conventionally well-known liner separation section and festoon, etc., which are pulled out from a cloth roll wound with a liner so that a long rubberized cloth 6a does not adhere. A horizontal and parallel rail 12.13 supported on the frame 10 via a rail stand 11, and a tilting slide stand 14.15 movable along the rail 12 and the unit 3 are provided to hold the grip part 16. .1
'7 and dual stroke air cylinders 1B and 19 attached to the frame 10 are combined. The grip part 16 holds and releases the rubberized cloth 6a that passes through the gap formed between the square bar-shaped upper member 16a and the lower member 16b by the operation of air cylinders 20 and 21 provided at both ends. It is supposed to be done. As shown in FIG. 4, the upper and lower members 16a and 16b are hollow inside, and one member 168 slightly protrudes from the inside to the clamping surface and is supported by a coil spring 22, so that when the clamping action is performed, the coil The member 16a elastically contacts the drawing cloth 6a.
A large number of pins 23 that are displaced inward are provided at predetermined intervals. This is to ensure that the edge of the rubberized cloth 6a is held over its entire length. The other grip part 17 is also the grip part 16
The configuration is the same as that of the first embodiment, and the illustrations of the components other than the members 17a and 17b and the air cylinders 20' and 21' are omitted. In addition, 24.25 in FIG. 1 is the grip part 16, l' when changing the cutting angle.
This is an angle adjustment unit that can change the angle of 7, and the figure shows a state in which the cutting angle is adjusted to 45 degrees with respect to the delivery direction.

The support base 2 is formed to have a width corresponding to the width of the section in which the grip portion 16, l'i' moves forward and backward, that is, the width of the rubberized cloth 6a cut to become the rubberized cloth piece 6b. An air cylinder 30 is provided at a lower position of the section so as to intersect with the delivery direction of the delivery device 1, and as shown in FIG.
It is supported by and moves up and down. The top surface of support stand 2 is the third
As seen in the figure, when the material is raised, the height is just enough to support the lower surface of the portion of the rubberized fabric 6a fed out by the material feeding device 1. A part of the upper surface thereof is formed as a belt conveyor 31 which is a part of the moving device 4 described later. Support stand 2
The lowering distance is such that it forms a space in which the gripping parts 16, 17 can move forward and backward at the upper position.

The cutting device 3 is provided along the edge of the support base 2 on the material supply section γ side, and includes a blade 32 that protrudes and runs on two sides of the support base 2, and a cable sill 33 that drives the blade 32.
, a rail 34, a slide bearing 35, a groove-like member 36 supported by the grip part 16 and holding down the rubber-coated cloth 6a on the support base 2 on both sides of the running position of the plate 32, and an air cylinder for raising and lowering the groove-like member 36. There is.

The moving device 4 includes a belt conveyor 3 provided on the support base 2 described above, and a winding device 38 for winding the spliced rubberized cloth 6C.
The belt conveyor 31 follows or interlocks with the winding device 38, and the seamed rubberized fabric 6
The rear edge of C is moved at a predetermined position, that is, the crimping position 1, and the amount of movement is controlled by the rear edge detection sensor 39 of the rubberized cloth 6C. Note that the winding device 38 includes a well-known feed roll, festoon, liner supply section, winding reel, and the like.

The pressure bonding device 5 includes a fixing plate 40 provided on the support base 2,
A clamping section includes a movable plate 41 provided on the frame 1O, an air cylinder 42 that drives the movable plate up and down, and a rubberized cloth cut piece 6b that connects the rear end edge of the spliced rubberized cloth 6C before the clamping operation. It is composed of an overlapping pressing member 45 on the front end lifting side, a driving cylinder 46 thereof, and the like. The above fixed plate 40
and the facing surface of the movable plate 41 is made of Teflon,
In addition to this, there is a rubberized cloth 6a.

Prevent this from happening in areas where 6b and 6c tend to stick.'5
It is coated with Teflon. The rear edge raising member 43 lifts the rear edge of the rubberized fabric 6C, which is disposed at the front side of the fixed plate 40, that is, at the front position in the movement direction of the spliced rubberized fabric 6C and is stopped, from the T-side. It is rotated by the air cylinder 44 around the pivot 47 as shown in FIG.

This rubberized fabric cutting and splicing device operates as follows. In FIG. 1, the gripping part 16.1 of the material delivery device 1
7 are in a state where they are separated from each other on both sides, that is, the gripping part 16 is in a backward state with respect to the feeding direction of the rubber-coated cloth 6tL of the material shown by the arrow 50, and the gripping part 17 is in a state in which it is advanced forward. The support base 2 is in the lowered position and the blade 3 of the cutting device 3
2 is at the cutting start end. First, the tip of the rubberized cloth 6a is inserted into the gap between the upper and lower members 16 of the gripping part 16 and the xab so that it protrudes a little, and then removed, and the support base 2 is lowered. This makes the tip of the rubberized cloth 6a oblique at a predetermined angle.

From this state, operations are performed sequentially as shown in the time chart of FIG. First, the material delivery device 1 delivers the rubberized cloth 6a. That is, the gripping portion 16 grips the rubberized cloth 6a with a slight margin left at the leading edge in the feeding direction, and the gripping portion 16
and 17 are close to each other and the gripping parts 17a, 1 are in an open state.
The tip edge of the rubberized cloth 6a enters between 7b and both stop, the gripping portion 17 performs a gripping operation, the gripping portion 16 performs a releasing operation,
Subsequently, the gripping parts 16 and 17 move away from each other,
It stops at a predetermined stop position, and the gripping portion 16 performs a gripping operation. Next, the support base 2 is raised, the groove-shaped member 36 of the cutting device 3 is lowered, and the blade 32 moves forward to cut the rubberized cloth 6a into a predetermined piece of rubberized cloth 6b. Then, while the grip part 16 remains in the grip state, the grip part 17 operates to release, and the grip part 16.
17 move a small amount in the direction away from each other. Subsequently, the rear edge raising member 43 of the clamping pressure bonding device fR5 moves down and the movable plate 41 descends and rises, but in the case of the first rubberized cloth piece 6b, there is no preceding rubberized cloth, so If it is connected to a winding lead member (not shown) in advance, it is connected to that lead member. The rubberized cloth piece 6b connected to the lead member is moved along the cutting direction when the support base 2 is lowered, the presser member 45 is raised, and the cloth presser member 45 is raised. The winding device 38 is moved, and the rear end in the moving direction is detected by the sensor 39, and the winding device 38 stops at a predetermined stop position.
While the winding operation is being performed, the aforementioned material feeding device l
operates to feed out the rubberized cloth 6a to be cut next. The rear edge position of the first rubberized cloth piece 6b is maintained at a fixed position by lowering the cloth presser member 45, and the next rear edge raising member 4
3, and rises so as not to come into contact with the ears of the rubberized cloth 6a that has already been sent out when the support stand 2 rises.

Then, by the subsequent operation of the cutting device 3, the next rubberized cloth piece 6b is cut.
is formed, and at the same position where the rubberized cloth piece 6b was cut, the rear edge of the rubberized cloth piece 6b that has been moved by the previous winding operation is raised at the leading edge in the next moving direction. They are overlapped by the downward movement of the member 43, and pressed and bonded by the downward and upward movements of the +iJ moving plate 41, resulting in the spliced rubberized fabric 6c.

Thereafter, in the same manner as described above, the rubberized cloth 6c is moved, the rubberized cloth 6a is sent out, and the rubberized cloth pieces 6b are formed by cutting.
The piecing is repeated.

<Effects of the Invention> According to the method and apparatus of the present invention, a piece of rubberized fabric cut at a predetermined angle is cut at the -11 position where it was cut or at a position downwardly displaced from the cut position. Since it is spliced with a rubberized fabric, the rubberized fabric that precedes it is displaced in the vertical direction, but in terms of plane it is only moved in the cutting direction, so the movement distance between the two pieces of fabric to be spliced is is the minimum. Therefore, positional deviations caused by the movement of the rubberized fabric are small, and the splicing accuracy is higher than in the past, and this high accuracy can be easily achieved. In addition, the feeding of the rubberized fabric to the cutting position and the movement (winding) of the spliced rubberized fabric are performed simultaneously, and the splicing is then performed, which improves efficiency compared to conventional methods. .

In the above embodiment, the pieces of rubberized fabric were spliced at the same positions as they were cut, but in some cases, substantially the same effect can be obtained by moving the pieces downward after cutting and then splicing them.

In the embodiment described above, the tip of the raw material rubberized cloth was transferred from one gripping part of the material delivery device to the other gripping part at the middle part of both gripping parts, but this was for the purpose of speeding up the process.
If the time required for feeding is short compared to the time required for moving the spliced rubberized fabric, the same effect can be obtained even if the feeding operation is performed by only one gripping section.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of the main parts of one embodiment of the device of the present invention, and FIG. 2 is a diagram showing A--A in FIG.
FIG. 3 is an enlarged partial sectional view taken along the line B-B in FIG. 1 with the support platform raised; FIG. 4 is an enlarged cross-sectional view taken at right angles to the longitudinal direction of the grip; is a time chart of the operation of each part of the device of the same embodiment. J...Material delivery device, 2...Supporting stand, 3...Cutting device, 4...Moving device, 5...Press bonding device, 16
, l'7...Gripping part, 32...Blade, 37...Groove member, 38...Winding device, 41...Movable plate, 45...
...Fabric presser member, 43...Rear edge raising member. Figure 3 No. 4 2 No. 50

Claims (2)

[Claims] (1) A first step in which a strip of rubberized cloth as a raw material is fed out in a predetermined length in the longitudinal direction from one end, and the end is stopped and cut at a predetermined angle with respect to the feeding direction to sequentially produce pieces of rubberized cloth with a predetermined width. and moving the rubberized cloth piece from the lowered position below the stopping position by a distance approximately corresponding to the cutting length along the cutting direction so that the trailing edge in the moving direction is spliced to a predetermined position. a second step of stopping the rubberized cloth piece at a position corresponding to the position; and a first step of following the trailing edge of the rubberized cloth piece that has completed the second step between the first and second steps. and a third step of splicing the front end edge of the rubberized cloth piece in the direction of movement in the second step of the piece of rubberized cloth that is in the same position or in the above-mentioned lowered position after the completion of the first step. A method for cutting and splicing rubberized fabric, characterized in that steps are performed overlappingly in time. (2) A material delivery device having a gripping part that is driven forward and backward along a predetermined horizontal delivery direction and grips the leading end edge of a raw material band-like rubberized cloth while moving in the delivery direction and delivers it to a predetermined position, and the gripping part a support stand disposed at the F side position of the advancing/retreating section and having an elevating drive unit and supporting the fed-out portion of the band-like rubberized fabric in the raised position; A cutting device is installed on the support stand to cut the fabric at a predetermined angle with respect to the feeding direction, and the piece of rubberized cloth cut by the cutting device on the support stand is cut by the cutting device when the support stand is lowered. a moving device for moving the piece of rubberized fabric on the support stand by a distance substantially corresponding to the length of the cut along the cutting direction; A cutting and splicing device for rubberized fabric, consisting of a vertical pressure bonding device.