JP3427219B2 - Weft removal device of blind fabric for topping sheet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weft removing device for a blind fabric for a topping sheet, which is woven with a large number of parallel warps and wefts.

[0002]

2. Description of the Related Art Conventionally, as a tire constituent material such as a carcass and a belt of a tire and other industrial materials such as an air spring, an interwoven fabric as shown in FIG. 6, that is, a fiber cord. A thin weft (3) that plays a role of a binder for maintaining a uniform distribution of the warp between weaving and rubber-making at a required interval in the longitudinal direction of a large number of warp (2) A so-called interwoven fabric (1), which is woven by being roughly struck as compared with warp, is generally used. After being subjected to heat treatment, adhesive treatment, etc., at least one side, usually both sides, of this blind cloth is covered with rubber and used as a so-called topping sheet.

By the way, when such a topping sheet is used as a tire constituent material, the weft yarn (3) in the above-mentioned interwoven fabric does not play any effective role in reinforcing the tire, and the presence of the weft yarn (3) exists. Therefore, there is a drawback that the performance of the tire is deteriorated.

That is, rubber (R) is added to the blind fabric (1).
The sheet topped with is widened in the tire molding-vulcanization process. As a result, the carcass material is expanded from the minimum 0% in the vicinity of the tire bead portion to a maximum of 80% in the vicinity of the tire crown center portion with respect to the original fabric, but the stress at each extension point of the weft yarn is large, so that the carcass material is widened. The wefts are stretched, and the warp cords are pushed up and down at the intersecting portion, so that the warp cords are not arranged in one plane, but in a zigzag arrangement as shown in FIG. Therefore, if it is attempted to keep the thickness (g) of the surface layer of the topping rubber (R) constant, a step (d) due to the zigzag arrangement of the warp (2) is produced.
It requires extra rubber, increases the amount of rubber used, and is an obstacle to weight reduction.

Further, the presence of the weft yarn (3) hinders uniform inflation during tire molding and vulcanization, and the parallel pitch (p) of the warp yarns (2) tends to be non-uniform, which causes poor tire uniformity. . Further, when the material of the weft thread (3) has poor adhesion to rubber, there is a problem that separation easily occurs from the weft thread (3). Also, when using a topping sheet as an industrial material such as an air spring, the same problem as in the above case used as a tire constituent material occurs.

Therefore, recently, a large number of warp yarns are arranged in parallel without a weft yarn to form a sheet, and a topping sheet without a weft yarn having at least one surface thereof covered with rubber is often used as a tire constituent material or the like. Has become.

As a method for producing this topping sheet without weft, there is a method in which a large number of warp cords, not a woven fabric, are arranged in parallel and supplied to a topping step by a calendar to coat rubber. In this case, However, the warp tends to move in the process before pulling out the dust and troubles such as cord breakage may occur, or the warp may be unevenly distributed.
In order to prevent this, there is a drawback that productivity is poor because only relatively small speed processing can be performed.

[0008] Therefore, using a similar blind fabric,
A method has also been proposed in which the weft yarns are removed before the rubber is drawn while the blind fabric is sent to a topping step using a calendar, and only the remaining warp yarn group is supplied to a calender roll to coat the rubber. In particular, from the viewpoint of productivity, the method using the interwoven fabric is preferable.

[0009] In this method, as means for removing the weft yarn from the bamboo blind fabric, for example, Japanese Patent Laid-Open No. 61-113877.
The means proposed in Japanese Patent Laid-Open Publication No. 2003-121242 is such that two pieces of split rings, which are fitted to each other in a staggered manner, are provided by moving the weaving fabric in the longitudinal direction and shifting the position of the weft thread by the shifting means to release the fixation by the adhesive treatment. The weft is finely divided by passing it between the roll type dividing means, and a large number of the divided wefts are separated by a separating means consisting of a rotating brush, and the separated weft is sucked and collected and removed. There is.

That is, the above-mentioned apparatus is only one in which weft shifting means, dividing means, and separating means are arranged in series as one set. As a result, missed wefts may be missed, and the wefts that could not be removed may become entangled in the reeds in front of the calendar and break, or weft debris may enter the groove of the grooved roll and cause the cord to derail from the grooved roll. There was a risk of hindering the homogenization of the array pitch.

The applicant of the present invention also utilizes the warp yarns on both side ends (ears) of the interwoven fabric in order to easily remove the weft from the above interwoven fabric with a simple device and equipment. Method for removing weft (Japanese Patent Application No. 4-12961)
No.) is proposed.

However, even in such a method of removing the weft, the weft may remain. That is, in weaving a blind fabric, wefts are not added (unconnected) because wefts are regularly replenished and weaved.
There is a portion regularly, and the weft of this portion remains without being pulled out, and there is a possibility that the same trouble as in the case of the above-described method of dividing and removing may occur.

In view of the above, the present invention arranges a plurality of weft removing means having different removal methods so as to allow the weft to remain as a weft removing device particularly when the interwoven fabric is used for a topping sheet without a weft. The present invention provides a weft removing device that can be reliably removed.

[0014]

SUMMARY OF THE INVENTION According to the present invention, a weft yarn is folded back at both side end portions of a large number of warp yarns at required intervals in the longitudinal direction.
Are implanted with a device for removing the weft cord fabric was woven, in order to solve the above problems, in the middle Okugyo of cord fabric supplied to the calender roll, it becomes by arranging a plurality of weft removing means, the first weft removing means removing hands stage sampling method, in order of Okugyo direction, subsequent at least one of the weft removing means is a removing means having different removal method from the first removal means, said first Weft
The removing means is the weft yarn of the above-mentioned interwoven fabric that moves in the longitudinal direction.
Equipped with a cutter that cuts the fabric at one middle part in the fabric width direction
Along with the weft cutting position by the cutter,
On both sides of the front, on both sides of the interwoven fabric
The warp yarns on both sides at the front outer side of the part that guides the ends
Nip and forcibly separate it from the main body of the remaining blind fabric
Equipped with a roller as a take-off means that pulls it outward
The cut weft threads are separated by the separating action of the warp threads on both ends.
It is characterized in that it is configured to be pulled out from the main body portion .

In the above description, it is preferable that at least one subsequent weft removing means is a removing means of a type in which the weft is finely divided and separated and removed.

In the above-mentioned first weft removing means, the warp yarns at the selvages at both ends are slightly separated from the take-off and separation position.
At the front, the warp spreads in the main body of the remaining blind fabric.
Clamping the main body from above and below so as to regulate
Place guide rollers on the rollers or on both sides of the main unit.
Which was formed by are preferred.

[0017]

According to the above-mentioned weft removing device of the present invention, the weaving fabric supplied to the calender roll is not missed because it passes through a plurality of weft removing means of different withdrawing methods during the transportation. The weft is removed.

That is, when the interwoven fabric first passes through the portion of the weft removing means of the first extracting method ,
After the weft yarn is cut in the middle portion one place, the side ears ends warp
Is clamped by rollers on the outer side in front of the guides at both ends.
When it is held, forcibly separated and pulled outward,
After the cutting, it is locked to the warp of
The weft is also pulled out to the side along with the separating action of the warp.
And will be removed from the remaining body .
In particular, it is more
And spread the warp threads of the main body of the remaining blind fabric in the
A clamping row that clamps the body from above and below so as to regulate it.
Or guide rollers on both sides of the main unit.
By doing so, it is possible to regulate the spread of warp threads on the main
It is possible to further improve the withdrawal efficiency of the weft after breaking. Also <br/>, when the weft withdrawal, in a portion where the weft is not coupled to the replenishment of the weft, also it there may remain without being drawn off weft, subsequent different in removal method By continuing to pass through the weft removing means, the remaining weft is also removed. For example, according to the weft removing means of the second aspect, the remaining weft is further finely divided and removed without omission.

Therefore, the weft yarns of the interwoven fabric are completely removed and supplied to the subsequent calender.

[0020]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a process diagram of a calendar line for producing a topping sheet (T) used for a tire constituent material such as a carcass of a radial tire.

As shown in FIG. 2, the interwoven fabric (1) used as the core material of the topping sheet (T) is composed of a large number of warp yarns (2) made of fiber cords and the like, and the lengthwise required distance between them is relatively large. It is woven with a fine weft thread (3) which is punched in with a coarse punch density and connects each warp thread (2). In particular, the weft thread (3) is usually folded back and continuously driven into the outer side of both ends of the weave thread (1), but in order to replenish the weft thread (3), the weft thread (3) is regularly provided in the longitudinal direction of the weave thread (3). In, there is a part that is not connected (not connected).

As the weft yarn (3), spun yarn such as cotton or rayon, or various kinds of yarn such as synthetic fiber yarn can be used, but the strength that can be pulled out by the first weft removing device described later. Use a thread with.

The above-mentioned blind fabric (1) is subjected to heat treatment and adhesive treatment as usual and wound up on a supply device, and is pulled out from the supply device as shown in FIG. 1 to obtain a tension controller (4). And weft removing step (1
After passing through 0), the weft is removed and then fed to the roll calender (5) in the topping step. Then, through the reed (51) and the grooved roll (52) for holding the warp group from which the weft has been removed in parallel, the calender roll (5
3) Passing between (54), rubber (R) is topped on the front and back of the sheet-like material only of the warp from which the weft is removed.
(6) is the cooling drum following the calendar (5),
(7) is an accumulator, and (8) is a winder for the topping sheet (T).

In the weft removing step (10), two types of weft removing means (10a) and (10b) having different removing methods are arranged in parallel in the feeding direction as weft removing devices.

As shown in FIG. 2 and FIG. 3, the first weft removing means (11) is arranged in the order of the traveling direction of the interwoven fabric (1). It is equipped with a rotary blade type cutter (11) for cutting the weft (3), and is folded back by the cutter (11) at both ends at the end as the blind fabric (1) moves. The weft (3) that has been driven in is cut. The cutter (11) is not limited to the rotary blade type as shown in the drawing, but may be one that moves up and down to cut the weft (3).

Slightly ahead of the weft cutting position in the feeding direction, the weave fabrics (1) on both sides of the weave fabric (1) to be fed.
Guide rollers for extraction for guiding the both side ends of the object (1
2) is arranged, and one or several warp threads (2a) at both ends are diagonally clamped outward from the guide portion , and as a take-up means for forcibly pulling them apart outward and pulling them out. Rollers (13) and (14) are arranged so that the warp yarns (2a) at the both ends can be laterally separated from the main body of the remaining blind fabric (1).

In this way, the warp yarns (2
Separating a) laterally, are implanted sequentially is folded in side ears ends, wherein the weft (3) which is cut in the central portion as in, the side ears ends with the folded portion warp ( Since it is locked to the warp yarns (2a), it is accompanied by the warp yarns (2a) at the both end portions and pulled out laterally, and is removed from the remaining group of warp yarns (2). (15) is a container for collecting the drawn warp (2a) and weft (3).

The warp yarns (2a) at the both ends are
At the time of pulling out the weft yarn (3) by the take-off and separating action , the residual warp yarn (2) in the main body portion becomes wider as the pull-out action is caused by the adhesive force or frictional force by the adhesive treatment of the warp yarn (2) and the weft yarn (3). to regulate a wide want to be flexed in the direction
As described above , it is desirable to dispose the sandwiching rolls (16) for sandwiching the main body part from above and below as shown by the chain line in FIG. 2, and to dispose the guide rollers (17) on both side parts. Thereby, the extraction efficiency can be further improved.

Further, it is desirable to provide, before the above-mentioned weft removing means (10a), means for fixing the weft (3) to the warp (2) by means of a roller for removing the fixation.

The second weft removing means (10b) following the above weft removing means (10a) is, as shown in FIG. 4 and FIG. 5, a dividing means (distributed means) arranged at the feeding portion of the blind fabric (1). 20) and separation / collection means (21) arranged thereafter.
Consists of.

The dividing means (20) is provided with two dividing rolls (24) (25) provided with dividing rings (22) (23) which are fitted alternately. (26) is the rotation driving means. The blind roll (1) is divided into the rolls (2)
4) By passing between (25), the weft (3) can be finely divided. This dividing means (20)
Alternatively, other cutting means such as a roll cutter can be used.

The separating / collecting means (21) arranged after the dividing means (20) has a rotating brush (28) rotated by an appropriate driving means (27), and has a large number of finely divided weft yarns. Can be separated by brushing them off with a rotating brush (28). Further, in the case of the figure, the weft that has been dislodged is sucked through the duct (29) so as to be collected and removed.

Therefore, the blind weave (1) passes through the second weft removing means (10b) following the first weft removing means (10a), whereby the first weft removing means (10a) is obtained. The weft thread (3) that has not been removed by the step (24) of the separation and recovery means (21) is retained.
After being finely divided by (25), it is separated and collected by the rotating brush (28).

Therefore, the above weft removing means (10a)
By passing the weaving fabric (1) through the weft removing device equipped with (10b), the wefts (3) can be completely removed without dropping, and only the remaining warp (2) group is supplied to the calender, and the topping sheet is obtained. Can be manufactured.

[0036]

As described above, according to the weft removing device of the present invention, the removing means for removing the weft and the removing means having a different removing method, for example, the weft is separated and removed. With the removing means of the above method, the weft yarns of the interwoven fabric supplied to the calender can be completely removed without missing the defects of the respective removing methods.

Therefore, by supplying the blind fabric to the calenderer line as in the conventional case, there is no possibility of causing troubles due to the remaining wefts, and it is easy to prepare a topping sheet from a sheet-like material made of only warps without wefts. In addition, high speed operation becomes possible and productivity can be improved.

[Brief description of drawings]

FIG. 1 is a schematic process drawing of a calendar line for manufacturing a topping sheet made of a blind fabric without wefts.

FIG. 2 is an enlarged schematic plan view of a weft removing device of a pulling-out method.

FIG. 3 is an enlarged schematic side view of the above.

FIG. 4 is a schematic plan view showing a weft removing means of a separation and separation system.

FIG. 5 is a schematic side view of the above.

FIG. 6 is a perspective view of a part illustrating a woven fabric.

FIG. 7 is an enlarged cross-sectional view of a part of a conventional topping sheet made of a blind cloth.

[Explanation of symbols]

(1) Sudare fabric (2) Warp (2a) Warp yarns on both ends (3) Weft (5) Calendar (10) Weft removal process (10a) First weft removing means (10b) Subsequent second weft removing means (11) Cutter (12) Guide roller for removal (13) (14) Roller of take-up means (20) Cutting means (21) Separation and collection means (22) (23) Dividing ring (28) Rotating brush

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 61-113877 (JP, A) JP 61-63718 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) D06H 7/00-7/14

Claims (3)

(57) [Claims] 1. A device for removing wefts from a weaving fabric woven by weaving a plurality of warp yarns at required intervals in the longitudinal direction while folding back the weft yarns at both ends of the weft yarns. in the course Okugyo made by arranging a plurality of weft removing means removing the hand stage of the first weft removing means sampling method, in order of Okugyo direction, and the subsequent at least one of the weft removing means and said first removal means The first weft removing means is a removing means having a different removing method , and the first weft removing means moves in the longitudinal direction.
Cutter that cuts the weft of the weave fabric at one place in the middle of the fabric width direction
And a weft cutting position by the cutter
On both sides slightly forward of the
Both sides of the weaving fabric should be on the outer side of the front of the guide.
The warp of the side selvage is clamped to force the remaining blind fabric.
As a take-off means that separates from the main body and pulls it outward
Equipped with a roller for cutting the weft thread on both sides
It is constructed so that it can be pulled out from the main body by the separating action.
Be Te weft removing device cord fabric for topping sheet according to claim. 2. At least one subsequent weft removing means comprises:
2. The weft removing device for a blind fabric for a topping sheet according to claim 1, which is a removing means of a system in which the weft is finely divided and separated and removed. 3. The take-up / separation position of the warp yarns at the both end portions
A little further to the front, the warp of the main body of the residual blind fabric
Hold the main body from above and below to regulate the spread of the yarn
Pinch rollers or guide rollers on both sides of the main unit.
Topping sheet cord fabric weft removing device according to claim 1 or 2 formed by arranging la.