JP4881548B2 - Rubber ribbon winding device - Google Patents

Description

  The present invention comprises an extruder for extruding a rubber ribbon and a tire rotation support for winding the rubber ribbon, and a sticking roller for attaching the rubber ribbon to the tire rotation support is attached to the extruder, the tire rotation support and the extruder, The present invention relates to a rubber ribbon winding device that controls a relative position and a relative posture of a rubber ribbon and winds the rubber ribbon on a tire rotation support body to form a tire constituent member under the movement of a sticking position of the rubber ribbon. The present invention relates to a device that enables simple control and can be simply configured.

  Conventionally, an extruder for extruding a rubber ribbon and a tire rotation support for winding the extruded rubber ribbon are provided, and a relative position of the extruder with respect to the tire rotation support is controlled to control a sticking roller attached to the extruder. A rubber ribbon winding device that forms a tire constituent member by winding a rubber ribbon on a tire rotation support under movement is known (for example, see Patent Document 1).

  According to this apparatus, firstly, a plurality of sizes of tire constituent members having different cross-sectional shapes are formed by winding a single type of rubber ribbon common to these sizes. Second, tire components formed by wrapping rubber ribbons can be molded continuously. Third, the rubber ribbon extruded for each tire to be molded is directly wound to form a tire component, so that the extruder can be downsized and the extruded rubber material The feature that the space for storage is not required can be brought about.

  In such an apparatus, when an attempt is made to form a tire component by winding a rubber ribbon on a tire rotation support, the position of the rubber ribbon applied along the contour of the tire rotation support that forms a curve in a cross section including the tire center axis is determined. Therefore, while rotating the tire rotation support, the application roller that specifies the rubber ribbon application position is moved along the tire contour while maintaining a posture parallel to the tangent to the contour of the tire rotation support. To be done. In general, since the affixing roller is fixedly attached to the extruder, the relative arrangement of the extruder with respect to the tire rotation support is controlled, and as a degree of freedom to control the relative arrangement, the tire rotation support is performed. Three degrees of freedom in a plane parallel to the body center axis are distributed to one or both of the extruder and the tire rotation support.

  In the example of the above-mentioned known document, as shown in a conceptual layout diagram in FIG. 4, the rubber ribbon winding device 80 includes an extruder 82 for extruding the rubber ribbon R and a tire rotation support 83 for winding the rubber ribbon R on the paper surface. The tire rotation support 83 is arranged on a plane fixed to the paper surface, and all three degrees of freedom for moving the sticking roller 84 along the contour of the tire rotation support 83 are extruded. Distributed to the machine 82. These degrees of freedom distributed to the extruder 82 include a translational freedom degree in the direction x that is spaced apart from the tire rotation support 83, a translational freedom degree in the direction y that is orthogonal to the direction x, and an extruder in the paper plane. The degree of freedom of rotation for changing the direction θ of the central axis.

  With such a configuration, the conventional rubber ribbon winding device 80 can form tire constituent members of a wide variety of sizes, but since all of the three degrees of freedom are distributed to the extruder 82, three degrees of freedom are provided. The weight of the moving part is increased during the control, and therefore the drive device becomes enormous, and the response speed decreases with the increase of the inertial mass. Further, when the size of the driving device is limited or the response speed is increased, the device becomes complicated and the cost becomes enormous, which is also a problem.

Also, as a method of distributing the three degrees of freedom, when all the degrees of freedom are distributed to the tire rotation support 83, the same problem occurs on the tire rotation support 83 side, which is not a solution. I understood that.
JP 2003-33960 A

  The present invention has been made in view of such problems, and without increasing the size of the drive device for controlling the relative arrangement of the tire rotation support and the extruder, and the response speed in the drive. An object of the present invention is to provide a rubber ribbon winding device that does not lower the temperature.

<1> The present invention comprises an extruder for extruding a rubber ribbon and a tire rotating support for winding the extruded rubber ribbon, and an attaching roller for attaching the rubber ribbon on the tire rotating support is attached to the extruder. In the rubber ribbon winding device that controls the relative arrangement of the extruder with respect to the tire rotation support and winds the rubber ribbon on the tire rotation support under the movement of the sticking roller to form a tire constituent member,
A tire rotation support body in which an extruder and a tire rotation support body are arranged side by side on a plane parallel to the central axis of the tire rotation support body and constitute three degrees of freedom for specifying the relative arrangement in this plane. The degree of freedom of translation in the direction in which the machine and the extruder are separated from each other, the degree of freedom in translation in the direction crossing the direction of separation, and the rotational degree of freedom to change the direction of each other, , allocated to Chiraka throat and tire rotation support and the extruder, as the number of degrees of freedom, to the extruder one or two degrees of freedom, the tire rotational support member 2 or less degrees of freedom, including a degree of freedom of the residual The rubber ribbon winding device is configured to distribute the rotational degrees of freedom that change the mutual orientation of the tire rotation support and the extruder out of the three degrees of freedom only to the tire rotation support .

  Here, the “tire rotation support” includes a tire molding drum and a hard core that serves as a core that supports the tire continuously from the molding process to the vulcanization process, and “a rubber ribbon is formed on the tire rotation support. “Paste” or “winding a rubber ribbon on the tire rotation support” means that the rubber ribbon is affixed or wound on a tire component already assembled on the tire rotation support. It means to include.

<2> The present invention is Oite to <1>, wherein the allocating the direction of the translational degrees of freedom intersecting the spaced approaching direction by an extruder, in a direction moved away approximate the tire rotation support and the extruder mutually This is a rubber ribbon winding device in which the translational degree of freedom is distributed only to the tire rotation support .

According to the invention of <1>, among the three degrees of freedom, in any of the extruder and the tire rotation support, the degree of freedom distributed to them is 2 or less, and the three degrees of freedom are concentrated only on one side. Therefore, it is possible to reduce the entire drive device related to these degrees of freedom, and thus it is possible to reduce the cost and space of the device, and to respond to the displacement along these degrees of freedom. Speed can be improved.
Regarding the degree of freedom of translation in the direction crossing the separation approaching direction, it is most preferable that the intersection angle with respect to the separation approaching direction is 90 degrees. And the device can be made more compact.

Further , according to the invention <1>, since the degree of freedom to change the mutual orientation of the extruder and the tire rotation support is distributed only to the tire rotation support, there is no need to arrange the extruder barrel to swivel. Other devices can be placed near both sides of the extruder, and if this freedom is borne on the extruder side, a space for swiveling the long barrel of the extruder is required, In this space, an apparatus cannot be placed or an article cannot be placed, resulting in a useless space.

According to the invention <2>, since the degree of freedom of translation in the direction intersecting the separation approaching direction with respect to the tire rotation support is distributed to the extruder, the drive mechanism of the tire rotation support can be simplified.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual arrangement diagram showing the arrangement of the rubber ribbon winding device according to the present embodiment. FIG. 1 (a) shows the arrangement at the origin position, and FIG. 1 (b) shows the arrangement at the position displaced from the origin position. Indicates. The rubber ribbon winding device 1 includes an extruder 2 that extrudes the rubber ribbon R, and a tire rotation support 3 that winds the extruded rubber ribbon R. The extruder 2 includes a rubber ribbon R on the tire rotation support 3. An affixing roller 4 is attached. The center axis L ₁ of the tire rotating support 3 provided parallel to the paper surface, and the extruder 2 and the tire rotation support body 3, are disposed side by side on the paper surface.

  While rotating the tire rotation support 3, the sticking roller 4 is displaced in a plane parallel to the paper surface along the peripheral surface while maintaining the posture in a direction in contact with the peripheral surface of the tire rotation support 3. The rubber ribbon R can be spirally wound or laminated and a tire constituent member can be formed.

In order to realize the relative displacement of the three degrees of freedom of the sticking roller 4 in the paper surface, the present embodiment has the following configuration. First, a reference point FP is set on the paper. The tire rotation support 3, the tire rotation support 3, the sheet surface and perpendicular rotational axis SC provided in its axial center plane F _1, the tire rotational support 3, rotatable around an axis of rotation SC At the same time, the rotational axis SC is configured to be displaced on a straight line Lx in a direction passing through the reference point FP and approaching the extruder 2 away from each other.

  About the extruder 2, this is comprised so that it can translate in the direction y parallel to the other straight line Ly orthogonal to the straight line Lx through the reference point FP. And since the sticking roller 4 is being fixed and attached to the extruder 2, it will necessarily be comprised so that a displacement on the straight line Lx is possible.

In this way, the degree of freedom of translation along the direction x parallel to the straight line Lx and the degree of freedom of rotation related to the rotation θ around the rotation axis SC are distributed to the tire rotation support 3 and the direction y is given to the extruder 2. The degree of freedom of translation along can be distributed. FIG. 1B shows that the tire rotation support 3 is displaced by (x ₁ −x ₀ ) along the direction x from the origin position shown in FIG. It shows a state in which it is rotated by θ ₁ while the extruder 2 is displaced by y ₁ along the direction y.

  FIG. 2 is a perspective view showing an example of a rubber ribbon winding device 1 that realizes the conceptual diagram shown in FIG. 1, and parts corresponding to those in FIG. This rubber ribbon winding device 1 forms a tread rubber member on a belt tread band molding drum (BT drum) 3 constituting a tire rotation support. In the state shown in FIG. The belt is already assembled on the circumference. The rubber ribbon R extruded from the extruder 2 is pasted on the BT drum 3 by the pasting roller 4 fixed to the extruder 2, and the pasting position and posture of the extruder 2 and the BT drum 3 are relatively displaced. Controlled by.

  In FIG. 2, the direction in which the extruder 2 and the tire rotation support 3 are spaced apart from each other is x, and the direction orthogonal to this direction is y. The extruder 2 is supported by a movable table 11 provided so as to be displaceable in the y direction. A y-axis displacing means 12 for displacing the movable table 11 includes a wheel 12b attached to the movable table 11, and the wheel 12b. The rail 12a is guided in the direction and driving means (not shown).

  On the other hand, the BT drum 3 is pivotally supported by a support 6 attached to the rotary table 13, and the rotary table 13 is attached to the movable table 16 so as to be rotatable around the rotary axis SC. The rotating means 14 that rotates the rotating table 13 includes a rotating shaft 14 a, a driving unit 14 c that rotationally drives the rotating table 13, and a support roller 14 b that supports the rotating table 13 and rolls on the movable table 16.

  Further, the movable table 16 is provided so as to be displaceable in the x-axis direction, and x-axis displacement means 15 for displacing the movable table 16 is provided. The x-axis displacement means 15 includes wheels 15b attached to the movable table 16, and The wheel 15b is constituted by a rail 15a for guiding the wheel 15b in the x direction and a driving means (not shown).

  In the above example, the y-axis displacement means 12 and the x-axis displacement means 15 are configured to guide the displacement of the movable tables 11 and 16 by combining the wheels 12b and 15b and the rails 12a and 15a. Instead of this, a linear motion guide may be used. In this case, the movable tables 11 and 16 can be guided with high accuracy.

Above, 3 degrees of freedom, each of the extruders 2 and the tire rotation support body 3, an example of a method of allocating 2 or less degrees of freedom, Figure allocation how other embodiments and reference examples 3 It is shown as a conceptual layout in FIGS. In the figure, symbol B indicates a tire rotating support, symbol E indicates an extruder, symbol X indicates a degree of translational freedom in a direction in which they are spaced apart from each other, and symbol Y indicates a direction in which they are spaced apart. The translational degrees of freedom in the orthogonal direction, and the symbol Θ indicates the rotational degrees of freedom that change their mutual orientation.

  FIGS. 3A to 3C are examples in which the degree of freedom Θ is distributed to the tire rotation support B, and FIG. 3A corresponds to the distribution method of the above-described embodiment. The degree of freedom X is the tire rotation support B and the degree of freedom Y is the extruder E. FIG. 3B shows the degree of freedom X and the degree of freedom Y to the extruder E, and FIG. The degree of freedom X is assigned to the extruder E, and the degree of freedom Y is assigned to the tire rotation support B. In these examples, since the degree of freedom Θ is distributed to the tire rotation support B, particularly in a large tire, it is not necessary to swivel the extruder E with a long barrel length, and that space is saved accordingly. Can do.

3D to 3F are reference examples in which the degree of freedom Θ is allocated to the extruder E, and FIG. 3D shows that the degree of freedom X is the tire rotation support B and the degree of freedom Y is FIG. FIG. 3 (e) shows the degree of freedom X and degree of freedom Y on the tire rotation support B, and FIG. 3 (f) shows the degree of freedom X on the extruder E and degree of freedom y on the tire rotation. The thing distributed to the body B is shown.

3 (g) and 3 (h) are reference examples in which the same type of freedom is distributed to both the tire rotation support B and the extruder E, and FIG. 3 (g) is illustrated in FIG. In the distribution method shown in (a), the degree of freedom X is distributed to both the tire rotation support B and the extruder E, and FIG. 3 (h) shows the distribution method shown in FIG. 3 (b). In FIG. 2, the distribution of the degree of freedom Y to both the tire rotating support B and the extruder E is shown, and by distributing one kind of freedom to both in this way, the drive device according to 3 degrees of freedom is shown. The balance of size can be adjusted.

  INDUSTRIAL APPLICABILITY The present invention can be used in a rubber ribbon winding apparatus that forms a tire constituent member by spirally winding or laminating a rubber ribbon.

It is a conceptual diagram which shows arrangement | positioning of the rubber ribbon winding apparatus of embodiment which concerns on this invention. It is a perspective view which shows the rubber ribbon winding apparatus of this embodiment. It is a conceptual diagram which shows the freedom degree allocation method of other embodiment and a reference example . It is a conceptual arrangement figure showing the conventional rubber ribbon winding device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rubber ribbon winding apparatus 2 Extruder 3 Tire rotation support body, BT drum 4 Sticking roller 11 Movable table 12 Y-axis displacement means 12a Rail 12b Wheel 13 Rotary table 14 Rotating means 14a Rotating shaft 14b Support roller 14c Drive part 15 X-axis displacement Means 15a Rail 15b Wheel B Tire rotation support E Extruder R Rubber ribbon SC Rotation axis

Claims (2)

An extruder for extruding a rubber ribbon and a tire rotation support for winding the extruded rubber ribbon are provided, and a sticking roller for attaching the rubber ribbon on the tire rotation support is attached to the extruder, and the extrusion to the tire rotation support In the rubber ribbon winding device for controlling the relative arrangement of the machine and winding the rubber ribbon on the tire rotation support under the movement of the sticking roller to form the tire constituent member,
A tire rotation support body in which an extruder and a tire rotation support body are arranged side by side on a plane parallel to the central axis of the tire rotation support body and constitute three degrees of freedom for specifying the relative arrangement in this plane. The degree of freedom of translation in the direction in which the machine and the extruder are separated from each other, the degree of freedom in translation in the direction crossing the direction of separation, and the rotational degree of freedom to change the direction of each other, , allocated to Chiraka throat and tire rotation support and the extruder, as the number of degrees of freedom, to the extruder one or two degrees of freedom, the tire rotational support member 2 or less degrees of freedom, including a degree of freedom of the residual allocated to,
A rubber ribbon winding device in which, among the three degrees of freedom, a rotational degree of freedom for changing the orientation of the tire rotation support and the extruder is distributed only to the tire rotation support. The degree of freedom of translation in the direction intersecting the separation approach direction is distributed only to the extruder, and the degree of freedom of translation in the direction of separating the tire rotation support and the extruder from each other is distributed only to the tire rotation support. The rubber ribbon winding apparatus according to claim 1.

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