JP2012161976A - Apparatus for winding rubber member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for winding a rubber member which can restrain stretch of the rubber member with a simple constitution.SOLUTION: The apparatus for winding the rubber member includes: an unwinding means 2, around the winding shaft 6 of which a continuous belt-like rubber member 7 is wound; a winding means 3 around which the rubber member 7 unwound from the unwinding means 2 is wound; a rotary driving mechanism 4 for rotating the winding means 3; and a touch keeping means 5. In the unwinding means 2, as the unwinding end 12 of the rubber member 7 from the unwinding means 2 is fitted to the outer peripheral surface 13 of the winding means 3 and then the rubber member 7 is wound around the outer peripheral surface 13 of the winding means 3 by the rotation of the winding means 3, the unwinding means 2 is rotated to the direction opposite to the rotative direction of the winding means 3. The touch keeping means 5 keeps such a state that the outer peripheral surface 15 of the rubber member 7, which is wound around the winding shaft 6 of the unwinding means 2, and the outer peripheral surface 13 of the winding means 3 are brought into contact with each other in the process in which the rubber member 7 is wound around the outer peripheral surface 13 of the winding means 3.

Description

  The present invention relates to a rubber member winding apparatus for winding a rubber member around an outer peripheral surface of a winding means from an unwinding means wound with a continuous belt-like rubber member.

  There is known a rubber member winding device for winding a continuous belt-shaped rubber member wound around an unwinding means from the unwinding end of the rubber member to the outer peripheral surface of the winding means so as to be wound around the outer peripheral surface of the winding means. It has been. In this winding device, both the unwinding means and the winding means are rotated, and the peripheral speed of the unwinding means and the peripheral speed of the winding drum are matched to cause wrinkles in the rubber member, It is restrained from extending (for example, refer patent document 1 etc.).

JP 2008-137302 A

In the winding device, since both the winding means and the winding means are rotated by separate rotational driving sources, the peripheral speed of the outer peripheral surface of the winding means and the peripheral speed of the outer peripheral surface of the winding means are In order to make them coincide, it is necessary to control the rotational speed of the unwinding means and the winding means.
The present invention provides a rubber member winding device that can suppress the elongation of a rubber member and has a simple configuration.

A rubber member winding device according to the present invention includes a winding unit in which a continuous belt-shaped rubber member is wound around a winding shaft, a winding unit in which a rubber member unwound from the winding unit is wound, A rotation drive mechanism for rotating the attaching means; and a contact maintaining means, and the unwinding means is provided after the unwinding end of the rubber member from the unwinding means is attached to the outer peripheral surface of the winding means. As the rubber member is wound around the outer peripheral surface of the winding means by the rotation of the winding means, the rubber member rotates around the outer peripheral surface of the winding means. Since the outer peripheral surface of the rubber member wound around the winding shaft of the unwinding means and the outer peripheral surface of the winding means are kept in contact with each other in the process of being attached, it is possible to suppress the elongation of the rubber member and Since the control to match the peripheral speed of the take-out means and the peripheral speed of the winding means is not performed, Can the configuration of the location easily.
Since the winding means includes a magnet for adsorbing the metal-containing rubber member wound around the outer peripheral surface of the winding means, when the rubber member is wound around the outer peripheral surface of the winding means, the rubber member Is attracted by a magnet, and the rubber member wound around the outer peripheral surface of the winding means is less likely to be applied with a tension in the direction along the outer peripheral surface of the winding means, so that the effect of preventing the rubber member from stretching is improved.

The block diagram which shows a winding apparatus (Embodiment 1). The figure which shows the state by which a rubber member is wound around the outer peripheral surface of a winding means (embodiment 1). The block diagram which shows a winding apparatus (Embodiment 2). The block diagram which shows a winding apparatus (comparative example). The figure which shows the state by which a rubber member is wound around the outer peripheral surface of a winding means (comparative example). The top view which shows a belt member (Embodiment 2; comparative example). The figure which shows the result of the elongation rate of the belt member at the time of using the conveying apparatus of a comparative example. The figure which shows the result of the elongation rate of the belt member at the time of using the conveying apparatus of an Example.

Embodiment 1
As shown in FIG. 1, the rubber member winding device 1 includes a winding means 2, a winding means 3, a rotation drive mechanism 4 for rotating the winding means 3, and a contact maintaining means 5. .

The unwinding means 2 has a configuration in which a continuous band-shaped rubber member 7 is wound around a winding shaft 6 in a roll shape.
The winding shaft 6 is rotatably supported by a support member 9 installed on the floor 8.

The winding means 3 is constituted by a rotating body around which the rubber member 7 unwound from the unwinding means 2 is wound.
The rotation center shaft 10 of the rotating body constituting the winding means 3 is rotatably supported by a support member 11 installed on the floor 8.

  The rotation drive mechanism 4 includes a rotation drive source and rotation transmission means (not shown). For example, a motor or the like is used as the rotation drive source, and a gear transmission mechanism or the like that transmits the rotational force of the motor to the rotation center shaft 10 of the winding unit 3 is used as the rotation transmission unit.

The unwinding means 2 is such that the unwinding end 12 of the rubber member 7 from the unwinding means 2 is attached to the outer peripheral surface 13 of the winding means 3 and then the rubber member 7 is rotated by the rotation of the winding means 3. As it is wound around the outer peripheral surface 13, it rotates in the direction opposite to the rotation direction of the winding means 3.
That is, after the unwinding end 12 of the rubber member 7 wound around the winding shaft 6 of the unwinding means 2 is attached to the unwinding end mounting portion 14 of the outer peripheral surface 13 of the winding means 3, the winding means 3 is driven to rotate. When the power source is activated and the winding means 3 is rotated in one rotation direction X, the unwinding end 12 of the rubber member 7 moves away from the unwinding means 2 (see FIG. 2). As a result, the rubber member 7 unwound from the unwinding means 2 by rotating the unwinding means 2 in the rotation direction Y opposite to the one rotation direction X of the winding means 3 is transferred from the unwinding means 2 to the winding means 3. It winds around the outer peripheral surface 13 of the winding means 3 so as to transfer to the outer peripheral surface 13.

In the process in which the rubber member 7 is wound around the outer peripheral surface 13 of the winding means 3, the contact maintaining means 5 and the outer peripheral surface 15 of the rubber member 7 wound around the winding shaft 6 of the unwinding means 2 and the winding means. 3 are maintained in contact with each other.
For example, as shown in FIG. 1, the contact maintaining means 5 has one end connected to the support member 9 of the unwinding means 2 and the other end connected to a fixing portion 16 provided on the winding means 3 side of the floor 8. It is constituted by an elastic means 20 such as a spring that presses the unwinding means 2 in the direction of the winding means 3 with a constant force (pressing force) F, or although not shown, the support member 9 of the unwinding means 2 is wound. It comprises pressing means such as an air cylinder device that presses in the direction of the means 3 and presses the unwinding means 2 in the direction of the winding means 3 with a constant force F.

  The floor 8 is provided with a slide protrusion rail (or slide rail groove) 17 for guiding the support member 9 of the unwinding means 2 in a straight line in the direction of the winding means 3. On the lower surface 9 a of the support member 9, a not-shown concave groove (or protrusion) corresponding to the slide protrusion rail 17 is provided.

According to the first embodiment, as shown in FIG. 2A, the unwinding end 12 and the unwinding end are mounted on a line 21 connecting the rotation center 2a of the unwinding means 2 and the rotation center 3a of the winding means 3. The state in which the unwinding end 12 of the rubber member 7 wound around the winding shaft 6 of the unwinding means 2 is attached to the unwinding end mounting portion 14 of the outer peripheral surface 13 of the winding means 3 is positioned. And the contact maintaining means 5 presses the unwinding means 2 in the direction of the winding means 3, so that the rubber member wound around the winding shaft 6 of the unwinding means 2 at the unwinding end 12 portion. 7 is maintained in contact with the outer peripheral surface 13 of the winding means 3.
Then, as shown in FIG. 2B, when the rotation driving source of the winding means 3 is driven to rotate the winding means 3 in one rotation direction X, the winding means 3 is wound around the winding shaft 6. While the contact between the outer peripheral surface 15 of the rubber member 7 and the outer peripheral surface 13 of the winding means 3 is maintained by the contact maintaining means 5, the rubber member 7 wound around the winding shaft 6 of the unwinding means 2 is wound around the winding means. 3 and the unwinding means 2 rotate in the rotation direction Y opposite to the one rotation direction X of the winding means 3.

According to the first embodiment, when the continuous belt-like rubber member 7 is wound around the outer peripheral surface 13 of the winding means 3, the outer peripheral surface of the rubber member 7 wound around the winding shaft 6 of the unwinding means 2. 15 and the outer peripheral surface 13 of the winding means 3 are maintained by the contact maintaining means 5, so that it is difficult to apply tension in the direction along the longitudinal direction of the rubber member 7 to the rubber member 7. Can be suppressed.
That is, when the outer peripheral surface 15 of the rubber member 7 wound on the winding shaft 6 of the unwinding means 2 and the outer peripheral surface 13 of the winding means 3 are separated, the space between the unwinding means 2 and the winding means 3 However, in the first embodiment, the rubber wound around the take-up shaft 6 of the unwinding means 2 is easily applied to the rubber member 7 in a state of being stretched over the rubber member 7. Since the contact between the outer peripheral surface 15 of the member 7 and the outer peripheral surface 13 of the winding means 3 is maintained by the contact maintaining means 5, it becomes difficult to apply tension to the rubber member 7, and the expansion of the rubber member 7 can be suppressed.

  And according to Embodiment 1, only the winding means 3 is rotated at a predetermined winding speed (rotational speed), and both the unwinding means 2 and the winding means 3 are rotated separately as in the prior art. Since the control is not performed so that the peripheral speed of the unwinding means 2 and the peripheral speed of the winding means 3 coincide with each other by the drive source, the configuration of the winding device 1 can be simplified.

Embodiment 2
As shown in FIG. 3, the rubber member 7 is a belt member 7A, the unwinding means 2 is an unwinding roll 2A in which the belt member 7A is wound around a winding shaft 6, and the winding means 3 is a molding drum. A winding device 1A having a configuration of 3A was obtained.

The belt member 7A is a rubber member with a built-in cord 31 formed by coating a raw rubber on a cord 31 such as a steel cord or an organic fiber cord by an extrusion rolling device called a calendar device, and is a component of a tire. is there. Since the belt member 7A is in a raw rubber state, it may be plastically deformed when it is extended. Therefore, it is highly necessary to suppress the elongation of the belt member 7A.
As shown in FIG. 6, the angle α formed by the orthogonal line 7 b orthogonal to the center line 7 a along the longitudinal direction of the belt member 7 </ b> A and the cord 31 is called a cord angle and is determined by the required performance of the tire.
The closer the cord angle α of the belt member 7A is to 0 °, the easier the belt member 7A extends in the longitudinal direction in the winding process of the belt member 7A. When the belt member 7A extends in the longitudinal direction, the cord angle α of the belt member 7A becomes larger than the initial value, and as shown in FIG. 6, the belt member 7A contracts in the width direction and the width dimension of the belt member 7A is in the initial state. From W1 to W2.

The molding drum 3 </ b> A has a circumferential surface 33 around which the belt member 7 </ b> A that is unwound from the unwinding roll 2 </ b> A is wound via the carcass member 32, and rotates around the center of the circle of the circumferential surface 33. It is a rotary body having a circular cross section.
A carcass member 32 as a tire component is first wound around the circumferential surface 33 of the molding drum 3 </ b> A, and the belt member 7 </ b> A is wound around the carcass member 32. The outer peripheral surface of the carcass member 32 wound around the circumferential surface 33 of the molding drum 3A constitutes the outer peripheral surface 13A of the winding means.
When the carcass member 32 or the belt member 7A includes a metal cord such as a steel cord as the cord 31, the circumferential surface 33 of the molding drum 3A is wound on the circumferential surface 33. A magnet 35 is provided for attracting the cord 31 of the carcass member 32 and the belt member 7A and sticking the carcass member 32 and the belt member 7A onto the circumferential surface 33. For this reason, when the belt member 7A is wound around the outer peripheral surface 13A of the carcass member 32 that forms the outer peripheral surface of the molding drum 3A as the winding means, the belt member 7A is attracted by the magnet 35, and the molding drum 3A Since the belt member 7A wound around the outer peripheral surface 13A is less likely to be applied with tension in the direction along the outer peripheral surface 13A, the effect of preventing the belt member 7A from stretching is improved.
The winding speed (rotational speed) of the molding drum 3A is set within a range of 0.5 rpm to 30 rpm, for example.

In the winding device 1A, in order to prevent the belt surfaces of the belt member 7A wound around the winding shaft 2a of the unwinding roll 2 from sticking to each other, the belt device 7A has one belt surface 7f. A peeling means 40 is provided for peeling the surface contact prevention member 41 such as a polyethylene film (not shown) attached so as to be peelable.
For example, the peeling means 40 peels the surface contact prevention member 41 from one belt surface 7f of the belt member 7A, and the belt member 7A peels from one belt surface 7f by the peeling portion 42 from one belt surface 7f. And a surface contact prevention member winding means 43 for winding the surface contact prevention member 41. The surface contact preventing member winding means 43 includes a winding shaft 43a that winds the surface contact preventing member 41 by connecting one end of the continuous band-shaped surface contact preventing member 41 and a rotation drive source (not shown) of the winding shaft 43a. Prepare. The winding shaft 43a is rotatably supported by a support member (not shown) installed on the floor 8. The peeling part 42 is supported by a support member (not shown), for example.
Further, every time the belt member 7A is wound around the molding drum 3A a predetermined number of times, the belt member 7A is cut by a cutting device (not shown) and separated from the unwinding roll 2A.

  According to the second embodiment, as in the first embodiment, the elongation of the belt member 7A can be suppressed. Therefore, variation in the elongation of the belt member 7A is reduced, and variation in the width dimension of the belt member 7A can be reduced. Therefore, variation in the width dimension of the belt member 7A within one tire is reduced, and a high-quality tire is manufactured. become able to.

Comparative Example As shown in FIG. 4, the unwinding end 7t of the belt member 7A unwound from the unwinding roll 2A forms the outer peripheral surface of the molding drum 3A via the festoon 50 and the roller conveyor device 51. After being attached to the outer peripheral surface 13A of 32, the winding member 2A is wound around the outer peripheral surface 13A of the molding drum 3A by activating the rotational driving source of the unwinding roll 2A and the rotational driving source of the molding drum 3A. Attached apparatus 1B.
In the winding device 1B, the belt member 7A is cut by a cutting device (not shown) every time the belt member 7A is wound around the molding drum 3A a predetermined number of times. The winding device 1B also includes the same peeling means as the peeling means 40 described in the winding device 1A, but is not shown in FIG.
The elongation of the belt member 7A wound around the molding drum 3A was measured by setting the winding device 1B having the configuration as follows.
Conditions for the winding device 1B of the comparative example;
Belt member 7A; width dimension = 390 mm, thickness dimension = 2.0 mm, cord angle α = 0 °
-Molding drum 3A; circumference of circumferential surface 33 = 2500 mm, winding speed = 16.6 rpm,
Acceleration = 5000 msec, deceleration = 3000 msec
・ Conveying angle β on the roller conveyor device 51 (see FIG. 1) = 38 °

Example The winding device 1A described in the second embodiment was set under the following conditions, and the elongation of the belt member 7A wound around the molding drum 3A was measured.
Conditions of the winding device 1A of the example;
Belt member 7A; width dimension = 390 mm, thickness dimension = 2.0 mm, cord angle α = 0 °
-Molding drum 3A; circumference of circumferential surface 33 = 2500 mm, winding speed = 16.6 rpm,
Acceleration = 5000 msec, deceleration = 3000 msec
・ Pushing force F = 50N

FIG. 7 shows the result of a comparative example in which the winding device 1B is set to the above conditions and the elongation of the belt member 7A wound around the molding drum 3A is measured.
FIG. 8 shows the results of an example in which the winding device 1A of the second embodiment is set to the above conditions and the elongation of the belt member 7A wound around the molding drum 3A is measured.

In the measurement, in the process in which the belt member 7A is wound around the molding drum 3A (winding means 3), the belt member 7A is transferred to the outer peripheral surface 13A (13) of the molding drum 3A (see FIG. 2B). 5), the state of the belt member 7A was sampled, and the elongation rate of the belt member 7A was obtained by comparing each sampling data with the reference state data of the belt member 7A.
The horizontal axis in FIGS. 7 and 8 indicates the position a on the molding machine (the distance from the winding start end 7s to the transfer portion 3b (see FIGS. 2B and 5B)), and the vertical axis indicates the elongation. .
The data of FIGS. 7 and 8 is obtained by, for example, photographing the state of the belt member 7A with the camera at the transfer portion 3b at every time when the winding start end 7s of the belt member 7A is separated from the transfer portion 3b by 100 mm. And the reference state data of the belt member 7A are input to a computer, and are graphs showing the elongation rate and width change rate calculated using a dedicated arithmetic program.
The width change rates 1 and 2 and the elongation rates 1 and 2 indicate sample numbers of the wound belt member 7A.
As can be seen from FIGS. 7 and 8, the maximum value of the elongation of the belt member 7A decreases from 19.8% of the comparative example to 0.4% of the example, and the variation in the elongation is the maximum of the comparative example. The improvement was from about 10% or less to the maximum of about 0.2% or less of the example.
In the case of the example, it was confirmed that the elongation of the belt member 7A can be suppressed and the variation in the elongation of the belt member 7A is reduced as compared with the comparative example.
In particular, even if the belt member 7A is a belt member 7A having a cord angle α = 0 °, which is easy to extend in the longitudinal direction in the winding process of the belt member 7A, according to the embodiment, as shown in FIG. It was confirmed that it can be suppressed.

  The winding object by the winding apparatus of this invention should just be a continuous belt-shaped rubber member. For example, a carcass member, a tread member, or other continuous belt-like rubber member constituting the tire may be used.

1; 1A winding device, 2 unwinding means, 2A unwinding roll (unwinding means), 3 winding means,
3A molding drum (winding means), 4 rotation drive mechanism, 5 contact maintaining means, 7 rubber member,
7A Belt member (rubber member), 13 (13A) Outer peripheral surface of winding means,
15 The outer peripheral surface of the rubber member wound around the winding shaft of the unwinding means, 35 magnets.

Claims (2)

Unwinding means in which a continuous belt-shaped rubber member is wound around a winding shaft, winding means for winding a rubber member unwound from the unwinding means, and a rotation drive mechanism for rotating the winding means; Contact maintaining means,
When the rubber member is wound around the outer peripheral surface of the winding means by the rotation of the winding means after the unwinding end of the rubber member from the winding means is attached to the outer peripheral surface of the winding means. Rotate in the direction opposite to the direction of rotation of the winding means,
The contact maintaining means makes the outer peripheral surface of the rubber member wound around the winding shaft of the unwinding means and the outer peripheral surface of the winding means contact each other in the process in which the rubber member is wound around the outer peripheral surface of the winding means. A rubber member winding device characterized by maintaining the state.   2. The rubber member winding apparatus according to claim 1, wherein the winding means includes a magnet for adsorbing a metal-containing rubber member wound around the outer peripheral surface of the winding means.

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