JP3853075B2 - Method and apparatus for supplying strip material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for supplying a belt-shaped material, and more specifically, the supply of a belt-shaped material that can reduce the stock space and the edge length of the belt-shaped raw material and can efficiently produce a variety of products in small quantities. The present invention relates to a method and an apparatus.
[0002]
[Prior art]
In general, the carcass material of a pneumatic tire is a calender material having a fixed width and a dip treatment process in which the cord surface is covered with an adhesive layer that improves the adhesion between the cord and rubber, and then the calender material is coated with unvulcanized rubber. There is a processing step and a cutting step in which the calendered material is cut into a width to be used and wound around a drum. The strip-shaped raw material that has been wound up and stocked is unwound from the drum during use, supplied to the forming drum, cut into substantially the same length as the peripheral length of the forming drum, and wound around the forming drum.
[0003]
However, since the carcass material formed and supplied as described above has different widths and lengths depending on the tire size, it is necessary to stock strip-shaped original fabrics having different dimensions for each tire specification. Therefore, since a very wide variety of original fabrics are prepared, there is a problem that a large stock space is required. Further, since it cannot be diverted to a carcass material of another tire specification, there is a problem in that an edge scale is generated in the belt-shaped raw material for each tire specification in the tire production process, and the material is wasted or requires processing man-hours. Furthermore, in the case of multi-product low-volume production, there is a problem that it is necessary to frequently perform a setup change operation for exchanging a drum around which a long strip-shaped raw material is wound every time the tire specification is changed.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a method and an apparatus for supplying a belt-shaped material such as a carcass material that can reduce the stock space and the edge length of the belt-shaped original fabric and can efficiently produce a variety of products in small quantities.
[0005]
[Means for Solving the Problems]
The method for supplying a strip-shaped material of the present invention that achieves the above-described object includes a step of cutting the unrolled wide strip-shaped raw material into a first strip-shaped material having a length corresponding to the size width, and the first strip-shaped material in advance. Joining the stored strips of strip material having the same width to form a second strip material longer than the winding length of the forming drum, and forming a second strip material having a winding length of the forming drum And a step of supplying the third belt-like material to a forming drum.
[0006]
In addition, the belt-shaped material supply device of the present invention includes a feed conveyor that transports the wide belt-shaped raw material unwound from the supply unit for each length corresponding to the size width, and a length corresponding to the size width of the belt-shaped raw material. A cutting device for cutting the first strip-shaped material, a transfer device for transferring the first strip-shaped material, a transport conveyor for transporting the transferred first strip-shaped material, and the first on the transport conveyor A splicing device that joins the ends of the belt-shaped material having the same width stored in the belt-shaped material to form a second belt-shaped member that is longer than the winding length of the molding drum, and a second splicing device that has the molding drum winding length. 3 cut in a strip material and the edge material, the third material web provided with a precut conveyor for conveying the molding drum side, the second strip-shaped material receiving position of the second strip-shaped material delivery position and the pre-cut conveyor of said conveyor When And wherein said end member that they have installed several storage conveyors storing rotational movably between.
[0007]
The wide belt-shaped raw material unrolled in this way is cut into a first belt-shaped material having a length corresponding to the size width, and the end material of the same width stored in advance in the first belt-shaped material is joined and molded. A second strip material longer than the drum winding length is molded, and the second strip material is cut into a third strip material having a molding drum winding length and then supplied to the molding drum. By changing it, it becomes possible to form the belt-like materials having different sizes from the same belt-like raw material, so that it is not necessary to stock the belt-like raw materials having different dimensions for each size, and the stock space can be reduced.
[0008]
In addition, strip-shaped original fabrics with different dimensions for each size are not required, and the end materials are stored and joined to form the strip material, greatly reducing the waste of the end measure and the labor of processing, Furthermore, high-mix low-volume production can be carried out very efficiently without performing a setup change operation in which a drum wound with a belt-shaped raw material is changed for each size having different specifications.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an explanatory view of a strip-shaped material supply device of the present invention. 1 is a let-off (supply unit) for supplying a wide belt-shaped raw fabric N, 2 is a feed conveyor for transferring the belt-shaped raw fabric N, 3 is a cutting device for cutting the strip-shaped raw fabric N into a first strip material N1, and 4 is a first 1 is a conveyor for conveying the strip material N1, 5 is a splicing device for joining the end strip M to the first strip material N1 to form the second strip member N2, 6 is a storage conveyor for storing the end strip M, and 7 is a first conveyor. A pre-cut conveyor 10 that cuts the second belt-like material N2 into the third belt-like material N3 and the end material M, and conveys the third belt-like material N3 to the forming drum D side, 10 is a transfer that transfers the first belt-like material N1 to the conveyor 4 Mounting device.
[0010]
The let-off 1 includes a take-up drum 1a around which a long sheet-shaped strip-shaped original fabric N is wound, and the strip-shaped original fabric N can be continuously drawn out from the drum 1a. The width of the strip-shaped original fabric N is shorter than the circumferential length of the forming drum D. A feed conveyor 2 is connected to the letoff 1.
The feed conveyor 2 is configured to transfer the wide belt-shaped raw fabric N by a length corresponding to each size width to the conveyance direction X1 side indicated by an arrow on the conveyor belt 2a. By this transfer, the strip-shaped original fabric N is unwound from the let-off 1, and the feed conveyor 2 is also configured to function as an unwinding conveyor. A transfer device 10 is connected to the feed conveyor 2 via a cutting device 3.
[0011]
The cutting device 3 travels in the original fabric width direction orthogonal to the conveying direction X1 by the length corresponding to the size width by the feed conveyor 2 from the cutting position of the belt-shaped original fabric N conveyed to the transfer device 10 side. Cutting is performed by the cutter 3a. Thereby, the front-end | tip part of the strip | belt-shaped original fabric N is cut | disconnected by the 1st strip | belt-shaped material N1 which has the length W according to size width, and is isolate | separated on the conveyor belt 10a of the transfer apparatus 10. FIG.
[0012]
The transfer device 10 includes a transfer conveyor 10A connected to the feed conveyor 2, and when the first belt-like material N1 cut on the conveyor belt 10a of the transfer conveyor 10A is conveyed to the transfer position, the transfer device 10 is not illustrated. The first belt-like material N1 is sucked and held by the sucking means, and is transferred onto the conveyor 4 connected to the transfer device 10.
[0013]
The transport conveyor 4 is disposed so that its transport direction X2 is changed by 90 ° with respect to the transport direction X1 of the feed conveyor 2, and as shown in FIG. 2, the first transport conveyor 4A and the second transport conveyor 4B. The first transport conveyor 4A transfers the first belt-like material N1 on the conveyor belt 4a in the transport direction X2, but the second transport conveyor 4B can transport the conveyor belt 4b back and forth in the transport direction X2. A splice device 5 is installed between the first conveyor 4A and the second conveyor 4B, and a storage conveyor 6 is provided on the conveyor side of the second conveyor 4B.
[0014]
The splicing device 5 butt-joins the rear end of the end material M stocked on the conveyor belt 6a of the storage conveyor 6 and the front end of the first strip material N1. The first belt-like material N1 is conveyed to the joining position below the splice device 5 on the conveyor belt 4a of the first conveyor 4A, and the end material M on the conveyor belt 6a of the storage conveyor 6 is the conveyor belt of the second conveyor 4B. When the rear end of the end material M and the front end of the first strip-shaped material N1 are brought into contact with each other, the second strip-shaped material longer than the winding length of the forming drum is joined. N2 is molded.
[0015]
A plurality of storage conveyors 6 are installed, and in the figure, an example in which six storage conveyors are installed in three rows and two rows is shown. The plurality of storage conveyors 6 are installed so as to be rotatable as indicated by arrows in FIG. 3, and can be moved to the second belt-shaped material delivery position P of the transport conveyor 4 and the second belt-shaped material receiving position Q of the pre-cut conveyor 7. It is like that. Each storage conveyor 6 is configured such that the conveyor belt 6a can be conveyed in the front-rear direction of the conveyance direction X2, convey the end material M toward the rear side in the conveyance direction, and convey the second strip material N2 toward the conveyance direction X2. Transport toward. A pre-cut conveyor 7 is connected to the storage conveyor 6.
[0016]
The pre-cut conveyor 7 includes a first transfer conveyor 7A, a second transfer conveyor 7B, and a cutting device 7C. The second transfer conveyor 7B is connected to the first transfer conveyor 7A, and the cutting device 7C is installed therebetween. Yes. The first conveyor 7A can convey the conveyor belt 7a around the conveyance direction X2, and the second conveyor 7B can convey the conveyor belt 7b toward the conveyance direction X2. When the second belt-shaped material N2 longer than the winding length of the forming drum is carried from the storage conveyor 6 to the precut conveyor 7 as shown by the one-dot chain line in FIG. 1, the cutter 7c of the cutting device 7C is in a direction orthogonal to the conveyance direction X2. After traveling and cutting the second belt-like material N2 into the third belt-like material N3 and the end material M having the winding length of the molding drum, the third belt-like material N3 is molded on the conveyor belt 7b of the second conveyor 7B. The end material M is conveyed to the drum D side, conveyed on the conveyor belt 7a of the first conveyance conveyor 7A to the rear in the conveyance direction X2, and returned to the storage conveyor 6. The second strip material receiving position Q of the pre-cut conveyor 7 is shifted from the second strip material delivery position P of the transport conveyor 4 to the rotational movement side of the storage conveyor 6 by two movements.
[0017]
Hereinafter, a method for supplying the band-like material having different size widths to the forming drum D by the above-described apparatus will be described.
First, an end material M made of a strip-like material having a different size width is prepared in advance on the storage conveyor 6. When the apparatus is operated from the initial state where there is no end material, the unrolled strip-shaped raw fabric N is cut into strip-shaped materials having different size widths by the cutting device 3, and these are transferred from the conveyor 4 to the storage conveyor 6. And stocked as storage material on the storage conveyor 6. In this way, the supply is started in a state in which the scrap material is provided in the storage conveyor 6.
[0018]
The same size as the end material N stored in the storage conveyor 6 where the leading end portion of the wide strip-shaped raw material N unwound from the let-off 1 by the feed conveyor 2 is at the second strip-shaped material delivery position P by the cutting device 3 The first band-shaped material N1 having a length corresponding to the width is cut. The first belt-like material N is placed on the conveyor belt 4a of the first transport conveyor 4A by the transfer device 10 and is transported in the transport direction X2 on the conveyor belt 4a so that the tip thereof is a joining position below the splice device 5. It is conveyed to.
[0019]
Before the cutting and transporting, the end material M is transported from the storage conveyor 6 at the second belt-shaped material delivery position P of the transport conveyor 4 to the joining position of the second transport conveyor 4B. 1 and the tip of the first belt-like material N1 are in contact with each other as shown by a one-dot chain line in FIG. 1, and the first belt-like material N1 and the edge material M are joined by the splice device 5 and longer than the winding length of the forming drum. A two-band material N2 is formed. After the molding, the conveyor 4 and the storage conveyor 6 are operated to transfer the second belt-like material N2 onto the conveyor belt 6a of the storage conveyor 6.
[0020]
When the second belt-like material N2 is transferred onto the conveyor belt 6a, each storage conveyor 6 is rotated by one movement. The next storage conveyor 6 sequentially moves to the second belt-shaped material transfer position P of the conveyor 4 to form the second belt material in the same manner as described above, and conveys the second belt-shaped material onto the conveyor belt 6a of the storage conveyor 6. To do.
On the other hand, when the storage conveyor 6 comes to the second belt-shaped material receiving position Q of the precut conveyor 7, the second belt material N2 is transferred from the storage conveyor 6 to the precut conveyor 7, and the cutting device 7C has a length around which the forming drum is wound. The three-band material N3 and the end material M are cut.
[0021]
The third strip material N3 is transported to the forming drum D side on the conveyor belt 7b of the second transporting conveyor 7B and supplied to the forming drum D. The forming drum D moves when the belt-shaped material N3 is wound, and another forming drum comes and waits. On the other hand, the end material M ′ is conveyed rearward in the conveying direction on the conveyor belt 7a of the first conveying conveyor 7A, transferred to the storage conveyor 6, and stored on the conveyor belt 6a. The stored end material M is used when the above-described second strip material N2 is formed. When the length of the end material M on the storage conveyor 6 is insufficient, the unrolled strip-shaped raw material N is cut so as to have the size width, and it is matched with the end material M on the conveyor 4 by the splicing device 5. Join and store again on the storage conveyor 6. In the apparatus having the six storage conveyors described above, by storing the end materials M having different size widths in the respective storage conveyors, it is possible to cope with six kinds of belt-shaped materials having different widths.
[0022]
In this way, in the present invention, the unrolled wide strip-shaped raw fabric N is cut into the first strip-shaped material N1 having a length corresponding to the size width and has the same width stored in the first strip-shaped material N1 in advance. The end material M is joined to form a second belt-like material N2 longer than the winding length of the forming drum, and the second belt-like material N2 is cut into a third belt-like material N3 having a winding length of the forming drum. Since it is supplied, by changing the cutting length of the strip-shaped original fabric N, various types of strip-shaped materials having different sizes can be formed from the same strip-shaped original fabric N. Therefore, it is not necessary to have a large space for stocking the raw material for each type. In addition, strips with different dimensions for each size are not required, and the end material M is stored and joined to form the strip material, greatly reducing the waste of the end measure and the labor of processing. In addition, since it is not necessary to perform a setup change operation for exchanging the drum wound with the belt-shaped raw material for each size having different specifications, it is possible to carry out high-mix low-volume production very efficiently.
[0023]
In the present invention, in the above-described embodiment, six storage conveyors 6 can be used to form six types of belt-shaped materials and supply them to the forming drum D. However, the number of storage conveyors 6 is increased. Thus, it is possible to form and supply more types of belt-shaped materials, and it is sufficient that the number of storage conveyors 6 is at least the number of types to be supplied. Alternatively, six storage conveyors 6 may be used, and fewer types, for example, two types or three types of belt-shaped materials may be formed and supplied to the forming drum D. As a matter of course, the above-described apparatus can also form the same type of band material and supply it to the forming drum D.
[0024]
The second strip material receiving position Q of the pre-cut conveyor 7 is to increase the production efficiency by simultaneously performing the step of forming the second strip material N2 on the conveyor 4 and the step of forming the third strip material on the pre-cut conveyor 7. The position is shifted by two movements from the second belt-shaped material delivery position P of the conveyor 4 to the rotational movement side of the storage conveyor 6, but it is sufficient to shift it by at least one movement, and if it is not necessary to carry out simultaneously. , Positions Q and P can be provided at the same opposing position.
[0025]
Moreover, although the said embodiment demonstrated the case where the width | variety of the strip | belt-shaped original fabric N was shorter than the circumference of the shaping | molding drum D, the width | variety may be longer than the circumference of the shaping | molding drum D. In that case, the end measure M becomes gradually longer and exceeds the circumference of the forming drum D. When this is detected on the storage conveyor 6 by the sensor, the first strip material N1 and the end measure M What is necessary is just to stop joining once and supply the end measure M which became the length exceeding the circumference of the shaping | molding drum D to the pre-cut conveyor 7, and it should just make it the same as the above. The amount left on the storage conveyor 6 should be secured at least 500 mm in order to avoid troubles during conveyance between conveyors.
[0026]
The present invention can be suitably used to supply a carcass material for a pneumatic tire that is formed by cutting and forming a strip-shaped raw material in which an unreinforced rubber is impregnated in a draw-up reinforcing cord, but is not limited thereto. Any material may be used as long as it can form strip materials having different size widths from the same wide strip-shaped original fabric and supply them to the molding drum.
[0027]
【The invention's effect】
As described above, the present invention cuts the unrolled wide strip into a first strip material having a length corresponding to the size width, and uses the same width of the end material stored in advance in the first strip material. After joining and forming a second strip material longer than the winding length of the forming drum, and cutting the second strip material into a third strip material having a winding length of the forming drum, the third strip material is supplied to the forming drum. By changing the cutting length of the belt-shaped raw fabric, various types of strip-shaped materials can be molded and supplied from the same raw fabric, eliminating the need for a wide space for stocking the raw fabric. It is possible to reduce the amount of scale and to efficiently produce a variety of products in small quantities.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an example of a belt-shaped material supply device of the present invention.
FIG. 2 is a view taken along arrow YY excluding the cutting device of FIG. 1;
FIG. 3 is an explanatory diagram of a storage conveyor as viewed from the direction of arrows ZZ in FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Let-off (supply part) 2 Feeding conveyor 3 Cutting apparatus 4 Conveying conveyor 4A 1st conveying conveyor 4B 2nd conveying conveyor 5 Splice apparatus 6 Storage conveyor 7 Pre-cut conveyor 7A 1st conveying conveyor 7B 2nd conveying conveyor 7C Cutting apparatus 10 Transfer Device 10A Transfer conveyor D Forming drum M End material N Strip material N1 First strip material N2 Second strip material N3 Third strip material P Second strip material delivery position Q of the transport conveyor Second strip material reception of the pre-cut conveyor position

Claims (2)

A feed conveyor that transports a wide strip of raw material unwound from the supply unit for each length according to the size width; and a cutting device that cuts the strip into a first strip material having a length according to the size width; , A transfer device for transferring the first strip material, a transport conveyor for transporting the transferred first strip material, and a strip material having the same width stored in the first strip material on the transport conveyor A splicing device that joins the end materials of the second member to form a second strip-shaped member longer than the winding length of the forming drum, and cuts the second strip-shaped material into a third strip-shaped material having a winding length of the forming drum and the end material. A plurality of pre-cut conveyors for conveying the three-band material to the forming drum side, and storing the end material between the second band-shaped material delivery position of the conveyor and the second band-material receiving position of the pre-cut conveyor Storage Rotation movable feeder of the installed material band bare. 2. The belt-shaped material supply device according to claim 1, wherein the second belt-shaped material receiving position of the pre-cut conveyor is shifted from the second belt-shaped material delivery position of the transport conveyor by at least one movement toward the rotational movement side of the storage conveyor.

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