JP3181615B2 - How to rubberize tire cords - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention relates to how to rubber pulling the large number tire cord made of synthetic fibers.

[0002]

2. Description of the Related Art As a method for rubberizing a large number of tire cords made of synthetic fibers, the above-mentioned tire cords are used for warp yarns, and a composite yarn formed by wrapping a cotton yarn on a cotton yarn or a polyester undrawn yarn is used for a weft yarn. Weaving a weft with a large warp density and a small weft density, fixing the spacing between the warps with wefts, then guiding the blind weave to a calendar, rubberizing both sides, and then cooling. ing. It is known that an adhesive treatment is performed before or after weaving the tire cord in order to improve the adhesion of the tire cord to rubber.

[0003]

Conventionally, weft yarns are used to maintain the warp tire cords at a predetermined arrangement pitch. Therefore, a weaving process is required. In this weaving process, weft yarns are shut down one by one. , And the warp is wound up by a fixed distance at each time of the driving, so that there is a problem that productivity is low. In addition, since the cotton yarn used as the weft or the cotton yarn on the composite yarn surface has low adhesion to rubber,
The above-mentioned cotton yarn was the starting point of the tire peeling.

Further, since the tire cord of the warp is wavyly curved due to the intersection of the warp and the weft during weaving, it is necessary to rubberize the rubber cord so as to be thicker by the amplitude due to the above-mentioned curvature. And the rubberized cord became heavier. Furthermore, since the weft is thinner and lower in density than the warp, the fabric width is narrowed by the tension applied in the length direction between weaving and rubberization. Since the ear side portion is easily narrowed, the warp density of the ear portion becomes larger than that of the center portion, and there is a problem that the arrangement pitch of the tire cords becomes non-uniform.

[0005] In order to solve the above-mentioned drawbacks, attempts have been made to omit the weaving step and rubberize only the warp tire cords. It was difficult to maintain the spacing and guide it to the rubberized calendar, and to maintain the above spacing during the rubberizing operation.

[0006] What the present invention, by omitting the weaving process, which eliminates the various disadvantages associated with the weaving, and provides a rubber pull Way Method capable of holding the array pitch of the tire cord in a predetermined distance It is.

[0007]

According to the method for rubberizing a tire cord according to the present invention, a large number of tire cords made of synthetic fibers are arranged in parallel and wound into a beam, and the tire cord is wound at the end of the winding end. Attaching an end stop member for fixing the arrangement order of a large number of tire cords, pulling out the tire cord from the beam by this end stop member ,
It is led to a grooved roller whose position can be adjusted back and forth, and a plurality of circumferential grooves provided at a predetermined pitch on the surface of the grooved roller are adjacent to the grooved roller and the grooved roller.
In a state where the space between it and the calendar to separate one by one the tire cord insert that connects the tire cord that is held in the predetermined intervals in the guiding cloth or prior rubberized cord calendars side, after accordingly Groove roller close to calendar
It is rubberized and cooled.

The cord-wound beam used in the above-mentioned rubber-pulling method is a cord-wound beam obtained by arranging a large number of tire cords made of synthetic fibers in parallel and winding them into beams. An end stop member for fixing the arrangement order of a large number of tire cords is attached to the end of the winding. In addition, the above-mentioned cord winding beam arranges a large number of bobbins around which tire cords are wound on a creel, passes a large number of tire cords drawn from each bobbin through a reed and holds them at equal intervals. It is manufactured by connecting the tip of the cord to a beam by hanging it on a hook previously fixed to the beam, or by gluing the cord to a wrapping cloth, and rotating the beam to take up the tire cord. The adhesive treatment on the tire cord can be performed when the tire cord is wound around a bobbin or a beam.

A reed can be used as the end stop member, and one tire cord is inserted into each reed. Also, instead of the reed, a ribbon-shaped member can be bonded from both front and back surfaces with a large number of tire cords interposed therebetween. In addition, as a ribbon-shaped member,
Examples thereof include a paper or cloth tape coated with an adhesive, and a hot-melt thin plate made of a thermoplastic resin. Further, as the end stop member, a clip capable of sandwiching all the tire cords can be used,
In addition, weft yarns can be woven into the ends of the tire cord to form end stoppers. Further, two reeds described above can be used, or a reed and a ribbon-shaped member can be used in combination.

[0010]

[Action] A beam in which many tire cords are wound up,
That is, by pulling out the tire cord from the cord winding beam using the end stop member, the tire cord can be easily and accurately inserted into the circumferential groove of the grooved roller. When the operation of the calendar is started, the tire cord is separated one by one by the groove of the grooved roller and goes to the calendar roll, so that the tire cord is rubberized while being maintained at a predetermined interval. Therefore, in the obtained rubberized cord, straight tire cords having no weft are arranged in parallel at a predetermined pitch.
And the distance between the grooved roller and the calendar roller was increased.
Insert the tire cord into the circumferential groove in the
Operation becomes easier and the grooved roller can be calendared.
The distance between tire cords is further
Maintained uniformly.

When a reed is used as an end stop member, the reed can be removed and reused after the end of the tire cord is connected to a conductive cloth or the like, and a grooved roller and a calendar roll can be used. It can be used for maintaining the interval of the tire cord together with the grooved roller. Also, when a ribbon-shaped member is used as the end stop member,
After connecting the winding end of the tire cord to conductive cloth, etc.,
The hard ribbon-shaped member having a large thickness can be removed, and the soft member having a small thickness can be fed forward while being connected to a conductive cloth or the like. When the reed is removed, a reed in which one of the upper and lower crosspieces is detachably formed with respect to the reed feather can be used.

[0012]

FIG. 1 shows an example of a rubberizing device used in the present invention. The beam 1 shown at the left end is composed of a cylindrical beam barrel 1a and flanges 1b fixed to both ends thereof as shown in FIG. 2, and a number of tire cords T are wound in parallel on the beam barrel 1a. Cord wound beam 2
Is formed. Then, a reed 3 used at the time of winding is detached from the winding device and attached to the end of winding of the tire cord T of the cord winding beam 2,
Further, a ribbon-shaped member 4 formed by applying an adhesive to a ribbon-shaped paper is adhered and fixed. The reed 3 is composed of a pair of upper and lower bars 3a, 3b and a number of wings 3c supported therebetween, and one of the bars can be detachably formed.

In FIG. 1, a large number of tire cords T drawn from the cord winding beam 2 are supplied to a grooved roller 9 via a plurality of guide rollers 5, a tension controller 6, a pull-out roller 7 and a guide roller 8. Be guided. This grooved roller 9 is, as shown in FIG.
A large number of circumferential grooves 9a are cut on the surface at a predetermined interval, and one tire cord T is inserted into one circumferential groove so that all the tire cords contact or cross each other. The guide is maintained at a predetermined interval so as not to be guided, and is installed so that the position can be adjusted back and forth.

A Z-type calendar 10 is provided in front of the grooved roller 9. The Z-type calendar 10 has four rolls 11, 12, 13, and 14, a first roll 11, a second roll 12, a third roll 13, and a fourth roll 14, arranged in a Z-shape. Upper surface of contact portion between roll 11 and second roll 12, and third roll 13 and fourth roll 1
The rubber composition G is placed on the upper surface of the contact portion of No. 4 and the front side of the tire cord T is rubberized by the rubber composition G on the first and second rolls 11 and 12, and the third and fourth rolls 13 and 14 are rubberized. The rubber composition G on the upper surface rubberizes the rear surface of the tire cord T.

The tire cord T rubberized by the Z-type calendar 10, that is, the rubberized cord TG, is wound around a plurality of cooling drums 16 arranged in a staggered manner via an upper guide roller 15 and cooled. Lower guide roller 17 fixed in position and upper guide roller 1 that can move up and down
8 and a plurality of guide rollers 20, and is guided to a winding device 21 and wound alternately around two winding cores 22 and 23.

Prior to starting the operation of the above-mentioned rubberizing device,
By picking up the reed 3 and the ribbon-like member 4 from the cord winding beam 2 placed on the supply side, the tire cord T
Is pulled out, and the reed 3 and the ribbon-shaped member 4 are sequentially passed through a plurality of guide rollers 5, a tension controller 6, a pull-out roller 7, a guide roller 8, and a grooved roller 9, whereby a large number of tire cords T are formed. It is passed through the guide roller 5 or the grooved roller 9 without disturbing the arrangement.

Next, the reed 3 is fixed between the grooved roller 9 and the guide roller 8 on the rear side, and the grooved roller 9 is retracted to widen the gap between the Z-type calendar 10 and the third roll 13. Then, the ribbon-shaped member 4 is lifted up from below, and the tire cords T between the reed 3 and the ribbon-shaped member 4 are inserted one by one into the groove 9a of the grooved roller 9 in order, and the ribbon-shaped member 4 is After the grooved roller 9 is connected to the end of the conductive cloth protruding from the roll 13 and the grooved roller 9 is brought close to the third roll 13, the operation of the rubberizing device is started.

[0018]

According to the first aspect of the present invention, a tire cord is cut from a beam on which a large number of tire cords are wound by using an end stop member attached to a winding end of the tire cord. Since the tire cords are separated and inserted one by one into the circumferential grooves of the pull-out and grooved rollers, the above-mentioned insertion can be easily and accurately performed without disturbing the arrangement of the tire cords wound on the beam. Can be. During the operation of the calendar, the tire cords are maintained at intervals by the grooves of the grooved rollers and rubberized in this state, so that linear tire cords having no weft are arranged in parallel at a predetermined pitch. A rubberized cord is manufactured.

Further, when a rubberized cord is manufactured using a synthetic fiber cord, a weaving step which has been required so far is omitted, and productivity is improved. And, only the warp tire cord is present in the obtained rubberized cord and no weft is present, so that the adhesion to rubber is improved and the peeling of the tire is reduced. Further, since there is no weft as described above, the tire cords of the warp are linearly arranged without waving up and down, so that the thickness of the rubberized cord can be reduced and the weight can be reduced.

According to the second aspect of the present invention , since the reed is used as the end stop member, the reed is removed after connecting the winding end of the tire cord to a conductive cloth or the like. And can be used for maintaining the intervals between tire cords. According to the third aspect of the present invention, a ribbon-shaped member is attached as an end stop member.
Its installation is easy.

[Brief description of the drawings]

FIG. 1 is a side view of an example of a rubberizing device used in the present invention.

FIG. 2 is a perspective view of a beam.

FIG. 3 is a perspective view of a grooved roller.

[Explanation of symbols]

 T: tire cord G: rubber TG: rubberized cord 1: beam 2: cord wound beam 3: reed (end stopper member) 4: ribbon-shaped member (end stopper member) 6: tension controller 9: grooved roller 9a: circumference Direction groove 10: Z-type calendar 11: First roll 12: Second roll 13: Third roll 14: Fourth roll 16: Cooling drum 19: Accumulator 21: Winding device 22: Winding core 23: Winding core

Claims (3)

(57) [Claims] An end stop member for arranging a large number of tire cords made of synthetic fibers in parallel and winding them up into a beam, and fixing the arrangement order of the large number of tire cords to a winding end of the tire cord. Then, pull out the tire cord from the above beam with this end stop member , and
To the grooved roller whose position can be adjusted, and a plurality of circumferential grooves provided at a predetermined pitch on the surface of the grooved roller.
Insert in a state where the space between it and the dust are separated one by one to said tire cord, connecting the tire cord that is held in the predetermined intervals in the guiding cloth or prior rubberized cord calendars side, later accordingly groove A method of rubberizing a tire cord, comprising: bringing a roller with a rubber close to a calendar, rubberizing the rubber, and cooling the rubber. 2. The end stop member is a reed, and each end is tied.
The tire core according to claim 1, wherein one tire cord is inserted.
How to rubberize the card . 3. A plurality of end stop members arranged in parallel.
Revolver bonded from both front and back with tire code interposed
Rubberized tire cord of claim 1, wherein a down-like member
How .