JP2017206366A - Winding device of rubber tape, winding method and manufacturing apparatus of rubber tape composite - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding device capable of improving the working efficiency of winding by suppressing curl in a separating direction from a reel at the tip part a rubber tape.SOLUTION: A winding device 10 winding a rubber tape G around a reel R comprises: a feed section 11 feeding the rubber tape G in the vicinity of the reel R; an air feeding section 12 blowing air to the tip part G10 of the rubber tape G; and a winding section 13 winding the rubber tape G passing the air feeding section 12 around the reel R. The winding by the reel R is made easy since the tip part G10 is close to the reel R by that the air feeding section 12 blows air to the tip part G10 of the rubber tape G.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for winding an unvulcanized rubber tape around a reel.

  Conventionally, various rubber tapes have been used as constituent members of tires (see, for example, Patent Document 1). In the tire manufacturing process, the rubber tape is usually stored in a state of being wound on a reel.

  In recent years, rubber tape having a smaller thickness tends to be used in order to increase the manufacturing accuracy of the tire.

  However, since the thin rubber tape described above has a low bending rigidity, it needs to be handled with care. For example, in the step of winding the rubber tape around the reel, the tip of the rubber tape may curl in a direction away from the reel. In this case, it is necessary to wind the curled rubber tape around the reel while correcting the tip portion of the curled rubber tape, resulting in a reduction in work efficiency.

  The curl at the tip of the rubber tape is particularly noticeable in a rubber tape composite in which a liner is bonded to the first surface facing the reel of the rubber tape. The reason is that the shrinkage of the rubber tape is suppressed on the first surface where the liner is bonded.

JP 2012-220774 A

  The present invention has been devised in view of the actual situation as described above, and provides a winding device that can suppress curling of the front end portion of the rubber tape in a direction away from the reel and increase the work efficiency of winding. The main purpose is to do.

  A first aspect of the present invention is an apparatus for winding a rubber tape around a reel, wherein a supply portion that supplies the rubber tape to the vicinity of the reel, and air is blown onto a front end portion of the rubber tape, and the front end portion is moved to the reel. And a winding unit for winding the rubber tape that has passed through the blowing unit around the reel.

  In the rubber tape winding device according to the present invention, the air blowing section blows air in a thickness direction of the rubber tape from a second surface opposite to the first surface facing the reel of the tip portion. desirable.

  In the rubber tape winding device according to the present invention, it is preferable that a liner is bonded to the first surface of the rubber tape.

  In the rubber tape winding device according to the present invention, it is preferable that the winding portion includes a pressing portion that presses the rubber tape against the reel.

  In the rubber tape winding device according to the present invention, it is preferable that the pressing portion is provided on a side opposite to the air blowing portion with respect to the reel.

  In the rubber tape winding device according to the present invention, it is preferable that the pressing portion includes an endless belt.

  According to a second aspect of the present invention, there is provided a rubber tape winding device according to claim 3, an extrusion device for continuously extruding the unvulcanized rubber tape, and a liner bonded to the first surface of the extruded rubber tape. It is characterized by comprising a bonding device.

  The rubber tape manufacturing apparatus according to the present invention preferably further includes a cutting device for cutting the rubber tape together with the liner.

  A third invention of the present invention is a method of winding an unvulcanized rubber tape around a reel, the first step of supplying the rubber tape to the vicinity of the reel, and blowing air to the tip of the rubber tape, The method includes a second step of bringing the tip portion close to the reel, and a third step of winding the rubber tape that has passed the second step around the reel.

  The winding device according to the first aspect of the present invention includes a supply unit that supplies rubber tape to the vicinity of the reel, a blowing unit that blows air onto the tip of the rubber tape, and a winding unit that winds the rubber tape that has passed through the blowing unit onto the reel. With. The tip of the rubber tape that has received the wind pressure of the air blown from the blower is curled toward the reel and approaches the reel. Thereby, it becomes possible to wind around the outer peripheral surface of a reel easily, and the work efficiency of winding is improved. Further, bending of the rubber tape during winding is suppressed, and a rubber tape having a uniform thickness can be obtained.

  The production apparatus of the second invention of the present invention comprises the above-mentioned rubber tape winding device, an extrusion device for continuously extruding the unvulcanized rubber tape, and a laminating device for bonding a liner to the second surface of the rubber tape. Therefore, it is possible to efficiently manufacture a rubber tape composite in which a rubber tape and a liner are bonded together.

  The winding method of the second invention of the present invention includes a first step of supplying a rubber tape to the vicinity of the reel, a second step of blowing air to the tip of the rubber tape, and a step of winding the rubber tape that has passed through the second step onto the reel. 3 steps. In the second step, air is blown to the front end portion of the rubber tape, and the front end portion is curled toward the reel so as to approach the reel. Thereby, it becomes possible to wind around the outer peripheral surface of a reel easily, and the work efficiency of winding is improved. Further, bending of the rubber tape during winding is suppressed, and a rubber tape having a uniform thickness can be obtained.

It is a side view of the winding apparatus of the rubber tape which concerns on one Embodiment of this invention. It is a side view which shows operation | movement of the winding apparatus of FIG. 1 in time series. FIG. 3 is a side view showing the operation of the winding device in chronological order following FIG. 2. FIG. 4 is a side view showing the operation of the winding device in chronological order following FIG. 3. FIG. 5 is a side view showing the operation of the winding device in chronological order following FIG. 4. It is a side view of the manufacturing apparatus of the rubber tape composite which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a side view of an embodiment of the winding device of the first invention of the present invention. The winding device 10 is a device that winds the rubber tape G around the reel R in a spiral shape. The winding device 10 can be used in the winding method of the third invention of the present invention.

  The rubber tape G is, for example, a thin and long rubber molded body used for manufacturing tires, and the thickness and width thereof are not particularly limited.

  The winding device 10 winds around the reel R the supply unit 11 that supplies the rubber tape G to the vicinity of the reel R, the blower unit 12 that blows air to the tip G10 of the rubber tape G, and the rubber tape G that has passed through the blower unit 12. A winding unit 13 is provided.

  The supply unit 11 includes, for example, a roller 11a for feeding the rubber tape G to the reel R. The first step is performed by the supply unit 11. The rotation axis of the roller 11a is parallel to the rotation axis of the reel R. In the present embodiment, the roller 11a is disposed above the reel R. Accordingly, the roller 11a supplies the rubber tape G vertically from above the reel R, and the tip G10 of the rubber tape G fed out by the roller 11a hangs down to the side of the outer peripheral surface of the reel R. The direction in which the rubber tape G is supplied by the supply unit 11 is not limited to the vertical direction, and may be a horizontal direction or an oblique direction.

  The rubber tape G has a first surface G11 facing the outer peripheral surface of the reel R, and a second surface G12 opposite to the first surface G11.

  The air blower 12 is disposed on the side of the outer peripheral surface of the reel R. The second step is performed by the blower unit 12. The air blower 12 is disposed on the side opposite to the reel R with respect to the tip G10 of the rubber tape G fed to the side of the outer peripheral surface of the reel R by the roller 11a. That is, the front end portion G10 of the rubber tape G hangs down between the outer peripheral surface of the reel R and the blower portion 12.

  The blower unit 12 includes a nozzle 12a that blows out compressed air, and a pipe 12b that supplies the compressed air to the nozzle 12a. The nozzle 12a faces the second surface G12 of the rubber tape G. When the nozzle 12a blows air onto the tip portion G10 of the rubber tape G, the tip portion G10 receiving the wind pressure curls and approaches the reel R. More specifically, the nozzle 12a blows air from the second surface G12 in the thickness direction of the rubber tape G, so that the tip G10 curls toward the reel R side.

  The pressure of air in the pipe 12b is desirably 0.5 kPa or more. By maintaining the internal pressure of the pipe 12b at 0.5 kPa or more, the tip G10 can be curled in a short time.

  The winding unit 13 includes a main body 13a in which an electric motor or the like is incorporated, and a reel stand 13b provided on the main body 13a. The third step is performed by the winding unit 13. The reel stand 13b can hold the rotation axis of the reel R horizontally. The reel R can be exchanged. Further, the reel stand 13b rotates the held reel R at a predetermined speed. That is, when the main body 13a motor is driven, the reel R rotates, and the rubber tape G supplied from the supply unit 11 is continuously wound around the reel R. The winding speed is synchronized with the supply speed of the supply unit 11 by the control device.

  2 to 5 show the operation of the winding device 10 in time series. When the tip G10 of the rubber tape G reaches below the axis of the reel R, the nozzle 12a blows air to the tip G10 of the rubber tape G. As a result, the tip G10 of the rubber tape G that has received the wind pressure curls toward the reel R side. That is, the front end G10 of the rubber tape G is curled into a shape along the outer peripheral surface of the reel R, so that it can be easily wound around the outer peripheral surface of the reel R, and the winding work efficiency is improved. Further, bending of the rubber tape G during winding is suppressed, and the rubber tape G having a uniform thickness can be obtained. Such a rubber tape G contributes to an improvement in tire manufacturing accuracy.

  The winding unit 13 of the present embodiment includes a pressing unit 14 that presses the rubber tape G against the reel R. The pressing portion 14 is supported by a stand or the like (not shown), presses the second surface G12 of the rubber tape G inward in the radial direction of the reel R, and brings the first surface G11 into contact with the reel R. As a result, a frictional force is generated between the first surface G11 and the reel R, and the rubber tape G is automatically wound around the reel R that is rotationally driven.

  The above-described initial winding process may be performed manually by an operator. In this case, the pressing portion 14 can be omitted.

  It is desirable that the pressing portion 14 is provided on the opposite side to the air blowing portion 12 with respect to the reel R. Thereby, the air blown out from the blower part 12 is blown to the tip part G10 of the rubber tape G without being blocked by the pressing part 14.

  The pressing portion 14 includes a belt 14a that circulates infinitely on a circular track including the outer peripheral surface of the reel R, and a plurality of rollers 14b that hold the belt 14a on the circular track. The rotation axis of each roller 14b is parallel to the rotation axis of the reel R. The roller 14b is rotationally driven by an electric motor or the like to drive the belt 14a. The belt 14a is rotationally driven in a direction opposite to the rotational direction of the reel R.

  As shown in FIG. 3, when the leading end G10 reaches the outer peripheral surface of the belt 14a due to the progress of the rubber tape G, friction is generated between the second surface G12 of the leading end G10 and the outer peripheral surface of the belt 14a. G10 is driven by the belt 14a.

  As a result, as shown in FIG. 4, the front end G10 of the rubber tape G is drawn into the outer peripheral surface of the reel R. At this time, it is desirable to continue blowing air from the nozzle 12a until a sufficient frictional force is generated between the first surface G11 of the rubber tape G and the outer peripheral surface of the reel R. And after the front-end | tip part G10 of the rubber tape G is drawn in to the outer peripheral surface of the reel R, the blowing of the air from the nozzle 12a is unnecessary. When sufficient friction is obtained between the front end G10 of the rubber tape G and the outer peripheral surface of the belt 14a, the air from the nozzle 12a is blown out until the front end G10 reaches the outer peripheral surface of the belt 14a. Also good.

  The number and arrangement of the rollers 14b are not limited to the illustrated form as long as the belt 14a can be arranged along the outer peripheral surface of the reel R. For example, by appropriately arranging at least one roller 14b on the outer peripheral surface of the reel R, the front end G10 of the rubber tape G can be easily drawn into the outer peripheral surface of the reel R.

  As shown in FIGS. 4 and 5, the pressing portion 14 retracts backward with respect to the reel R as the rubber tape G is wound. Note that the pressing portion 14 is configured to press the rubber tape G against the reel R only after the initial stage of winding the rubber tape G (for example, until the front end portion G10 of the rubber tape G goes around the reel R), and then retracts. May be.

  In addition to the vulcanized rubber tape G, the winding device 10 can be applied to winding a rubber tape composite GP in which a liner is bonded to the first surface G11 of the unvulcanized rubber tape G. The liner protects the first surface G11 and prevents the first surface G11 and the second surface G12 of the rubber tape G wound around the reel R from sticking.

  FIG. 6 shows a side view of an embodiment of the manufacturing apparatus of the second invention of the present invention. The production apparatus 1 is an apparatus for producing a rubber tape composite GP in which a rubber tape G and a liner P are bonded together.

  The production apparatus 1 includes an extrusion apparatus 2 that continuously extrudes an unvulcanized rubber tape G, a laminating apparatus 4 that bonds a liner P to the first surface G11 of the extruded rubber tape G, and a winding apparatus 10. Yeah.

  The extrusion device 2 includes, for example, a cylinder 2b provided at one end with an inlet 2a into which unvulcanized material rubber and various compounding agents are charged, a screw shaft 2c that is housed therein and rotationally driven, And an extrusion head 2d having a die for discharging unvulcanized rubber extruded by the screw shaft 2c into a substantially horizontally long cross section. In addition, since the detailed structure of the extrusion apparatus 2 is described in the said patent document 1, the description is abbreviate | omitted.

  The bonding apparatus 4 has a main body 4a and a plurality of rollers r. The laminating device 4 is equipped with a wound article P1 of a tape-shaped liner P made of a resin material.

  The main body 4a of the bonding apparatus 4 is configured in a wall shape, for example. A large number of rollers r having a horizontal rotation shaft are pivotally supported in a cantilever manner on the main body 4a.

  That is, the main body 4a is provided with a roller r that generates a driving force for pulling the rubber tape G pushed out from the extrusion device 2 downstream, and a cooling drum rc that cools the drawn rubber tape G. .

  The cooling drum rc is a metal drum formed with the largest diameter. The cooling drum rc contacts and cools a relatively high temperature rubber tape G that has been extruded through a wide range. If necessary, a coolant such as cooling water is circulated through the cooling drum rc, and the temperature thereof is maintained at a low temperature.

  Moreover, the main body 4a of the bonding apparatus 4 is equipped with a wound product P1 obtained by winding a liner P made of a resin material. The liner P is made of a resin material such as polyurethane, polyester, polyethylene, polyvinyl chloride, or polystyrene, and is formed in a thin tape shape. The liner P is previously wound around a reel or the like in a spiral shape. This roll P1 is detachably supported on the main body 4a and is attached so as to be replaceable and re-supplyable.

  The wound product P1 is rotatably supported by the main body 4a. The liner P pulled out from the wound product P1 is bonded to the first surface G11 by the adhesive force of the rubber tape G. Thereby, the rubber tape composite GP in which the rubber tape G and the liner P are bonded together is obtained.

  According to the manufacturing apparatus 1, the work efficiency at the time of winding the rubber tape composite GP on the reel R is enhanced, and the rubber tape composite GP can be efficiently manufactured.

  The manufacturing apparatus 1 further includes a cutting device 6 that cuts the rubber tape composite GP. The cutting device 6 includes a roller 61 that drives the rubber tape composite GP, and a cutter 62 that cuts the rubber tape G together with the liner P.

  The cutting device 6 cuts the rubber tape composite GP when replacing the reel R. The cutting device 6 and the winding device 10 are controlled in synchronization with each other as appropriate by the control device. As a result, the reel R is automatically replaced without human intervention, and the production efficiency of the rubber tape composite GP is increased.

  The manufacturing apparatus 1 of this embodiment is configured to include a calendar head 3 provided at the front end of the extrusion apparatus 2, a bonding apparatus 4, and a festoon apparatus 5 provided between the cutting apparatus 6. Yes.

  The calendar head 3 includes a pair of upper and lower calendar rolls 3a and 3b arranged with a gap. Each calendar roll 3a, 3b is supported by an electric motor (not shown) so that it can be rotated in the opposite direction. The rubber discharged from the extrusion device 2 continuously passes through the gap between the calendar rolls 3a and 3b. Thereby, the calendar rolls 3a and 3b can roll rubber | gum and shape | mold the rubber tape G with a finishing cross-sectional shape. In addition, since the detailed structure of the calendar head 3 is described in the said patent document 1, the description is abbreviate | omitted.

  The festoon device 5 includes a main body 5a and a plurality of rollers 5b having a horizontal axis perpendicular to the longitudinal direction of the rubber tape composite GP. The plurality of rollers 5b includes an upper roller 5b1 that is rotatably supported on the upper side of the main body 5a, and a lower roller 5b2 that is rotatably supported on the lower side of the main body 5a and is movable in synchronization with the upper and lower sides. Including. The rubber tape composite GP is wound around these upper and lower rollers 5b1 and 5b2 in a zigzag shape.

  The festoon device 5 can temporarily retain the rubber tape composite GP by moving the lower roller 5b2 downward. Thereby, the festoon apparatus 5 can absorb the rubber tape composite GP continuously supplied, for example, when the reel R is replaced. In exchanging the reel R, the festoon device 5, the cutting device 6, and the winding device 10 are controlled in synchronization with each other by the control device.

  As mentioned above, although the pneumatic tire of this invention and its manufacturing method were demonstrated in detail, this invention is changed and implemented in various aspects, without being limited to said specific embodiment.

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus 2 Extruding apparatus 4 Bonding apparatus 6 Cutting apparatus 10 Winding apparatus 11 Supply part 12 Blowing part 13 Winding part 14 Press part 14a Belt G Rubber tape GP Rubber tape composite G11 1st surface G12 2nd surface P liner R reel

Claims (9)

A device for winding a rubber tape on a reel,
A supply unit for supplying the rubber tape to the vicinity of the reel;
A blower unit that blows air to the tip of the rubber tape to bring the tip close to the reel;
A rubber tape winding device comprising: a winding unit that winds the rubber tape that has passed through the blower unit around the reel.   2. The rubber tape winding device according to claim 1, wherein the blower blows air in a thickness direction of the rubber tape from a second surface opposite to the first surface facing the reel of the tip portion. 3.   The winding device for a rubber tape according to claim 2, wherein a liner is bonded to the first surface of the rubber tape.   The rubber tape winding device according to claim 1, wherein the winding unit includes a pressing unit that presses the rubber tape against the reel.   The rubber tape winding device according to claim 4, wherein the pressing portion is provided on a side opposite to the air blowing portion with respect to the reel.   The rubber tape winding device according to claim 5, wherein the pressing portion includes an endless track belt. A rubber tape winding device according to claim 3;
An apparatus for producing a rubber tape composite comprising: an extrusion apparatus for continuously extruding the unvulcanized rubber tape; and a laminating apparatus for adhering a liner to the first surface of the extruded rubber tape.   The apparatus for producing a rubber tape composite according to claim 7, further comprising a cutting device for cutting the rubber tape together with the liner. A method of winding an unvulcanized rubber tape on a reel,
A first step of supplying the rubber tape in the vicinity of the reel;
A second step of blowing air to a tip of the rubber tape to bring the tip close to the reel;
And a third step of winding the rubber tape that has passed through the second step onto the reel.

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