JP2001162693A - Rolled liner of unvulcanized rubber member and method for rolling liner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the outside diameter of a blank roll when a rolled liner is not used. SOLUTION: The width of a strip base plate 2 is gradually enlarged toward one of the ends of the base plate 2 and a spacer 3 which is continuous in the lengthwise direction of the base plate 2, is provided on both sides of the base plate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an unvulcanized rubber member having a specific cross-sectional shape, such as an unvulcanized rubber member having a specific cross-sectional shape which is molded and provided for tire molding. The present invention relates to a winding liner of an unvulcanized rubber member suitable for winding storage without causing deformation and the like, and a winding method thereof.

[0002]

2. Description of the Related Art For example, in order to temporarily store a long unvulcanized rubber member to be used for molding a tire, the unvulcanized rubber member formed and molded through an extruder or a calender roll is wound up. May be kept in state. in this case,
Since the unvulcanized rubber has adhesiveness, if the unvulcanized rubber member is wound as it is, each of the inner and outer peripheral surfaces thereof is stuck to the winding portion on the inner and outer peripheral sides, With a liner between the unvulcanized rubber members to be wound,
It is widely practiced to prevent adhesion between unvulcanized rubber members.

On the other hand, unvulcanized rubber has plasticity and is easily deformed by receiving mechanical stress.
When the unvulcanized rubber member is wound through a liner, the shape and dimensions of the unvulcanized rubber member change depending on the tension of the liner, the weight of the unvulcanized rubber member itself to be wound, and the like. There is a problem that the change causes troubles in tire molding in a later process and causes a reduction in uniformity and the like of a product.

[0004] The applicant has previously disclosed a winding liner which can advantageously solve these problems, as disclosed in Japanese Patent Laid-Open No. Hei 5-3013.
No. 00 was proposed. As shown in a sectional perspective view in FIG. 8, the winding liner has a thickness of the unvulcanized rubber member on both sides of a non-stretchable strip base plate 51 having a uniform width on which the unvulcanized rubber member is placed. Taller spacer 52
To the length direction of the base plate 51,
Alternatively, they are provided at intervals.

In the winding liner 53, for example, a long unvulcanized rubber member formed by molding is placed on the band-shaped base plate 51 and adhered to the band-shaped base plate 51 under its own adhesiveness. In this state, the winding liner 53 is wound on a reel 54 as shown in FIG. 9, and a band-shaped base plate portion wound on the inner peripheral side and a band-shaped base plate portion wound on the outer peripheral side are formed. Is maintained as expected by the spacer portion of the base plate portion on the inner peripheral side, plastic deformation of the unvulcanized rubber member 55 can be effectively prevented.

In the drawing, reference numeral 56 denotes a pair of flanges projecting from the peripheral surface of the reel 54 at intervals substantially equal to the width of the winding liner 53. The flanges 56 are wound between them. Displacement of the winding liner 53 to be performed,
It functions to prevent the collapse.

[0007]

However, in the winding liner 53, the unvulcanized rubber member 55 does not exist on the belt-shaped base plate 51, and the winding liner 53 is in a winding state when it is not used, that is, in an empty winding state. In addition, winding outer diameter D
Are the same as those at the time of use, so that the winding device and the feeding device for the unvulcanized rubber member are long and large, respectively, and there are inconveniences such as an increase in equipment cost and an increase in occupied space.

Accordingly, the present invention is to reduce the size of the apparatus by reducing the outer diameter of the winding in the idle winding state when not in use, compared to the outer diameter of the winding in use. Provided is a winding liner for an unvulcanized rubber member and a method for winding the liner, which realizes reduction of cost, occupied space, etc., and also facilitates handling of an empty winding liner including a reel. I do.

[0009]

According to the present invention, a winding liner for an unvulcanized rubber member has a width of a non-stretchable and moderately rigid strip base plate on which the unvulcanized rubber member is mounted. From one end to the other, symmetrically with respect to the central axis, while gradually widening linearly or curvedly,
On both sides of the band-shaped base plate, spacers having a thickness higher than the thickness of the unvulcanized rubber member to be placed are provided continuously or discontinuously in the length direction of the band-shaped base plate.

One winding dimension of such a winding liner is determined by winding the unvulcanized rubber member on a reel from a narrow side while the unvulcanized rubber member is placed on a strip-shaped base plate. The spacers on both sides of the band-shaped base plate support the band-shaped base plate portion wound on the outer peripheral side, and the respective band-shaped base plate portions on the inner and outer peripheral sides,
A protection space for the unvulcanized rubber member is defined between the spacers on both sides.

[0011] According to this, the rolled unvulcanized rubber member on the belt-shaped base plate has a protection space defined by the non-stretchable band-shaped base plate portion and the spacer having a height greater than the thickness of the unvulcanized rubber member. In addition to plastic deformation, dimensional changes can be effectively prevented.

The other dimensions of the winding liner are as follows: when the unvulcanized rubber member is not present on the strip base plate, for example, when the unvulcanized rubber member is removed from the strip base plate. Take liner,
By winding it on a reel from its wide side, each of the spacers on both sides of the band-shaped base plate is positioned inward in the width direction with respect to the spacer portions on both sides of the band-shaped base plate portion wound on the inner peripheral side. , The respective band-shaped base plate portions on the inner and outer peripheral sides are "inscribed" with each other.

According to this winding method, the above-mentioned protection space for the unvulcanized rubber member is no longer partitioned, and the winding outer diameter of the winding liner can be reduced to a diameter substantially equivalent to the protection space. Therefore, the size of the apparatus can be effectively reduced, and the handling of the winding liner in an empty state can be facilitated.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention with a part thereof broken away. The winding liner 1 is non-stretchable, has appropriate rigidity, and has a band-shaped base plate 2 that allows placement of an unvulcanized rubber member. Each of the spacers 3 is provided continuously and has a height higher than the thickness of the unvulcanized rubber member, and the band-shaped base plate 3 has a width gradually increasing from one end to the other end. Here, it is assumed that the width gradually increases symmetrically with respect to the center axis CL of the band-shaped base plate 2 and increases linearly or curvedly, in the figure, linearly.

In the winding liner 1, for example,
100m its length L, and minimum width W ₁ 300 mm, the maximum width W ₂ may be a 600 mm, also, 2 mm thickness T of the strip-shaped base plate 2, 15 mm each height t and width w of the spacer 3 And 5 mm. Here, the band-shaped base plate 2 can be made of a two-ply woven fabric or the like made of monofilament polyester, and the spacer 3 can be made of urethane rubber or another rubber material that can expand and contract in the direction in which it extends.

When the winding liner 1 as described above is to be used for winding and storing an unvulcanized rubber member, the unvulcanized rubber member is placed on the strip-shaped base plate 1 in advance, as shown in FIG. As shown in the figure, it is wound on the reel 4 from the narrow side and the spacers 3 on both sides of the strip-shaped base plate 1 are wound.
By supporting the band-shaped base plate portion wound on the outer peripheral side from the lower surface side, a height exceeding the thickness p of the unvulcanized rubber member 5 is provided between each of the band-shaped base plate portions on the inner and outer peripheral sides and the spacer 3. The non-vulcanized rubber member protection space 6 is partitioned.

In such winding, a pair of flanges 7 provided on the reel 4 are connected to the winding liner 1.
By contacting the winding liner 1 on the outermost side, it is possible to effectively prevent the winding liner 1 from being wound or collapsed.

Here, when the winding liner 1 is wound, the unvulcanized rubber member 5 is sufficiently protected from the action of a tensile force or the like under the action of the non-stretchable band-shaped base plate 1. And in the winding state,
By maintaining the height k of the protection space 6 as expected under the flexural rigidity of the strip-shaped base plate 2 in the illustrated cross section, the unvulcanized rubber member 5 is sufficiently protected from the action of the crushing external force or the like. Therefore, plastic deformation and the like of the unvulcanized rubber member 5 can be effectively prevented.

On the other hand, the unvulcanized rubber member 5 wound and stored as shown in FIG. 2 is subjected to, for example, molding of a tire under the operation of feeding the winding liner 1 to form a belt. When the unvulcanized rubber member does not exist on the base plate, the take-up liner 1 is moved from its wide side to the reel 8 as shown in FIG.
The spacers 3 on both sides of the band-shaped base plate 2 are wound up, and are positioned inward in the width direction with respect to the spacers on both sides of the band-shaped base plate portion wound on the inner periphery side. each strip base plate portion to each other by surface contact with, thereby, the winding outer diameter D _o of empty winding state of the winding liner 1, as compared with the winding outer diameter D ₁ of the case shown in FIG. 2, the protection It is reduced to a size corresponding to the winding diameter of the space 6.

When the winding liner 1 is idle-wound to such a small diameter, the winding and unwinding device is advantageously reduced in size, and at the same time, the winding liner 1 in the empty winding state is easily handled. Can be. Here, 9 in the figure
Denotes a pair of flanges provided on the reel 8 for regulating the position of the winding start end of the winding liner 1.

By the way, the minimum possible outer diameter D _m of the reel 8 used for such an empty winding can be obtained from the following equation: D _m ≒ 2wL / π (W ₂ −W ₁ ) = 2L / π × w / W ₂ −W ₁ According to this, as the width w of the spacer 3 becomes smaller,
It can be as the difference W ₂ -W ₁ the width of the winding liner 1 is large to reduce the minimum outer diameter D _m.

That is, the length of the liner 1 is L, the minimum width is W ₁ , the maximum width is W ₂ , the width of the spacer 3 is w, the minimum outer diameter of the empty reel 8 is D _m , Α is a spreading ratio from the narrow end to the wide end of the liner 1 and the liner 1 minimizes the outer diameter of the reel 8, provided that the spacer 3 does not overlap when the liner 1 is wound around the empty reel 8. The method of winding 1 is to wind the spacers 3 on both sides so that the spacers 3 are adjacent to each other without any gap every time the winding is performed. In this case, the spreading ratio α can be expressed in the following two ways. α = (W ₂ −W ₁ ) / 2L α = w / πD _m Then, when the minimum outer diameter D _m is obtained from these equations, D _m = 2wL / π (W ₂ −W ₁ ) = 2L / π × w / W ₂ −W ₁ .

In [0023] In the system constructed as above the winding liner 1, the winding outer diameter D ₁ and the minimum air-winding outer diameter D _o of the unvulcanized rubber member 5 is as shown in Table 1.

[0024]

[Table 1]

Here, the band-shaped base plate 2 is
More rigid polyester, aluminum, when constituted by iron and other metals, by thinner the thickness T, it can be further reduced in diameter of the winding outer diameter D ₁ and an empty winding outer diameter D _o and Become.

As shown in the side view of FIG. 4, the spacer 3 can be formed discontinuously in the longitudinal direction of the strip-shaped base plate 2. According to this, the spacer 3 is made of a highly rigid material. With this configuration, the winding and unwinding of the winding liner 1 can be made sufficiently smooth.

When the spacer 3 is made of a rubber material, the cross-sectional shape is substantially the same as that shown in FIGS.
FIG. 5C shows the shape shown in FIG. 5C. When the shape is made of a highly rigid material such as a metal or a synthetic resin material.
Various shapes as illustrated in (d) to (l) can be used, and the width w of the spacer 3 can be reduced.

Here, the winding liner 1 in the case of employing the configuration shown in FIG. 5 (l) which can minimize the spacer width w has the form shown in a perspective view in FIG. When the unvulcanized rubber member 5 is wound up with the winding liner 1 and when the winding liner 1 is wound empty, the main parts are shown in the width direction sectional views in FIGS. 7A and 7B, respectively. As shown. In this case, in the winding state of the winding liner 1, the outer peripheral side band-shaped base plate portion is supported by the upper end flange of the spacer 3. Are spaced from each other by an amount corresponding to the thickness of the lower end flange of the spacer 3.

When the winding liner 1 configured as described above is used, the winding outer diameter D ₁ and the minimum idle winding outer diameter D _o.
Is as shown in the table under the dimensions shown in Table 2.

[0030]

[Table 2]

[0031]

As is apparent from the above description, according to the present invention, it is possible to sufficiently prevent the change of the shape and the size of the unvulcanized rubber member. When not in use, the outside diameter of the idle winding is made sufficiently small to realize the downsizing of the apparatus, and the winding liner in the idle winding state can be easily handled.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention with a part thereof broken away.

FIG. 2 is a cross-sectional view in a width direction showing a winding state of an unvulcanized rubber member by a winding liner.

FIG. 3 is a perspective view showing an empty winding state of the winding liner.

FIG. 4 is a partial side view showing another example of the spacer.

FIG. 5 is a diagram illustrating a cross-sectional shape of a spacer.

FIG. 6 is a perspective view showing another embodiment with a part thereof being broken away.

FIG. 7 is a cross-sectional view of a main part illustrating a wound state and an unwound state of an unvulcanized rubber member.

FIG. 8 is a perspective view showing the prior art with a part thereof broken away.

FIG. 9 is a cross-sectional view in the width direction showing a state in which an unvulcanized rubber member is wound by a winding liner.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Winding liner 2 Strip base plate 3 Spacer 4, 8 Reel 5 Unvulcanized rubber member 6 Protective space 7, 9 Flange D ₁ Winding outer diameter D _O Empty winding outer diameter CL Center axis

Claims (3)

[Claims] 1. The width of a non-stretchable band-shaped base plate on which an unvulcanized rubber member is placed is gradually increased symmetrically with respect to a center axis from one end to the other end. A winding liner for an unvulcanized rubber member in which spacers having a height greater than the thickness of the unvulcanized rubber member to be placed are provided continuously or discontinuously in the longitudinal direction of the band-shaped base plate. 2. The width of a non-stretchable band-shaped base plate on which an unvulcanized rubber member is placed is gradually increased from one end to the other end symmetrically with respect to a center axis, and the width of the band-shaped base plate is increased on both sides. When the unvulcanized rubber member is placed on the strip-shaped base plate, the take-up liner provided with a spacer having a height greater than the thickness of the unvulcanized rubber member is placed on the reel from the narrow side thereof. In this way, the band-shaped base plate portions wound on the outer peripheral side are supported by the spacers on both side portions of the band-shaped base plate, and a gap is formed between the respective band-shaped base plate portions on the inner and outer peripheral sides and the spacers on both side portions. A winding method for a winding reel, comprising defining a protection space for a vulcanized rubber member. 3. The width of a non-stretchable band-shaped base plate on which an unvulcanized rubber member is placed is gradually increased symmetrically with respect to a center axis from one end to the other end, and the width of the band-shaped base plate is increased at both sides. A winding liner provided with a spacer having a height higher than the thickness of the unvulcanized rubber member to be placed is wound on a reel from a wide side thereof in a state where the unvulcanized rubber member does not exist on the strip-shaped base plate. By taking each, the spacers on both sides of the band-shaped base plate are positioned inward in the width direction with respect to the spacer portions on both sides of the band-shaped base plate portion wound on the inner peripheral side, and the respective band-shaped base plates on the inner and outer peripheral sides are arranged. A method for winding a take-up reel, wherein the parts are inscribed with each other.