JP2013086432A - Carcass band molding system, and carcass band molding method using the carcass band molding system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carcass band molding system shortening the molding time of a carcass band having two inner and outer cylindrical carcass ply material layers, and a carcass band molding method.SOLUTION: The carcass band molding system has with a supply means 10 for supplying first and second unvulcanized strip like carcass ply materials, a drum support means 30 for supporting at least first and second molding drums 20A and 20B for molding the first and second cylindrical carcass ply materials so as to be able to rotate them around the center axial lines m1 and m2 of the respective molding drums and displacing the molding drums between a position adjacent to the supply means 10 and a position apart from the supply means, an outside joining means 40 for joining both ends of the unvulcanized carcass ply materials supplied around the molding drums 20A and 20B and a transfer means 50 for holding the first cylindrical carcass ply material molded into a cylindrical shape on the first molding drum 20A from the outer peripheral surface side thereof.

Description

  The present invention relates to a carcass comprising a cylindrical carcass ply material in which both ends of an unvulcanized belt-shaped carcass ply material are joined and arranged in the radial direction inside and outside, and comprising two layers of inner and outer cylindrical carcass ply materials. The present invention relates to a carcass band molding system for molding a band, and a method for molding the carcass band using the carcass band molding system, and in particular, proposes a technique for shortening the time required for molding a carcass band and increasing production efficiency. To do.

  For example, a tire having two layers of cylindrical carcass ply materials inside and outside is known as a tire having high durability or high load capacity. As a method of manufacturing this tire, as described in Patent Document 1, the first carcass layer is wound around the outer peripheral side of the molding drum, and the winding start end and winding end are overlapped with each other. Further, a method of winding the second carcass layer around the outer periphery of the first carcass layer and joining the winding start end and the winding end has been widely used.

JP 2001-277813 A

  By the way, in the above method, since the second carcass layer cannot be wound unless the winding of the first carcass layer is completed, when the carcass band is molded, the first carcass layer is wound on the molding drum. The minimum time required is the sum of both the time and the time for winding the second carcass layer on the first carcass layer. On the other hand, although the advent of a carcass band molding system that has sufficiently increased production efficiency by shortening the time required for molding a carcass band has been strongly demanded in the past, the above method can reduce the time sufficiently. It was difficult, and such a carcass band molding system has not yet been put into practical use.

  An object of the present invention is to provide a carcass band molding system capable of sufficiently shortening the time required for molding and obtaining high production efficiency when molding a carcass band including two layers of inner and outer cylindrical carcass ply materials, and The object is to provide a carcass band molding method using this carcass band molding system.

The present invention relates to a carcass comprising a cylindrical carcass ply material in which both ends of an unvulcanized belt-shaped carcass ply material are joined and arranged in the radial direction inside and outside, and comprising two layers of inner and outer cylindrical carcass ply materials. A carcass band molding system for molding a band,
First and second non-additions for molding each of the first cylindrical carcass ply material disposed on the radially outer side and the second cylindrical carcass ply material disposed on the radially inner side Providing supply means to supply the belt-shaped carcass ply material,
Each of the first and second cylindrical carcass ply materials for molding the first and second cylindrical carcass ply materials, each having at least one molding drum capable of expanding and contracting, is rotatably supported around the central axis of each molding drum. And a drum support means for displacing between a position adjacent to the supply means and a position separated from the supply means,
Outer joining means for joining the both ends of the first and second unvulcanized belt-like carcass ply materials supplied around the molding drum in an attitude in the vertical direction with respect to the central axis of the molding drum, While being arranged corresponding to any one of the positions,
A transfer means for holding the first cylindrical carcass ply material formed in a cylindrical shape on the first molding drum from the outer peripheral surface side by moving back and forth along the central axis of the molding drum is provided on the other side of the molding drum. The carcass band molding system is arranged corresponding to the above position.

  In such a carcass band molding system, the drum support means supports the first and second molding drums in parallel with each other by offsetting them at an equal distance from each other with respect to the axis. It is preferable that the molding drum is rotationally displaced around the axis.

  In the carcass band molding system, each of the first and second molding drums has an inner joining means facing the outer joining means, and each of the outer joining means and the inner joining means is a molding drum. Outer pulling claws and inner pulling members that draw both ends of the unvulcanized belt-like carcass ply material supplied around each other in the circumferential direction and butt-join the both end surfaces of the unvulcanized belt-like carcass ply material. It is preferable to provide a nail.

  The second molding drum preferably includes second segment displacing means for displacing only a part of the segment divided in the circumferential direction inward in the radial direction.

  Further, holding means for holding the second unvulcanized belt-like carcass ply material is alternately provided in the circumferential direction with respect to the plurality of segments, and the holding means is provided in the second segment displacement means. It is preferable to displace only the segment inward in the radial direction.

Using such a carcass band molding system, a molding method of a carcass band comprising a cylindrical carcass ply material of two layers inside and outside,
After the first unvulcanized belt-shaped carcass ply material supplied under the operation of the supply means is wound around the outer peripheral surface of the first molding drum, the first molding drum is moved to a position corresponding to the outer joining means. The outer joining means is moved forward and displaced to join both ends of the first unvulcanized belt-shaped carcass ply material wound around the outer peripheral surface of the first molding drum,
Next, the first cylindrical carcass ply material is placed on the outer peripheral surface side of the first molding drum displaced to a position separated from the outer joining means under the operation of the drum support means, with the transfer means being advanced. After the holding means, the transfer means is retracted and displaced, while both ends of the second unvulcanized belt-shaped carcass ply material wound around the outer peripheral surface of the second molding drum are supplied under the operation of the supply means. Is displaced to a position corresponding to the outer joining means, and the both end portions are joined under the advanced posture of the outer joining means,
Thereafter, under the operation of the drum support means, the transfer means holding the first cylindrical carcass ply material is advanced and displaced with respect to the second molding drum displaced to a position separated from the outer joining means, and the first The second cylindrical carcass ply material on the second molding drum is crimped to the inside of the first cylindrical carcass ply material.

  According to the carcass band molding system of the present invention and the carcass band molding method using the carcass band molding system described above, the first cylindrical carcass ply material joined on the first molding drum is transferred by the transfer means. Since the step of taking out and the step of joining both ends of the second unvulcanized belt-like carcass ply material wound on the second molding drum by the outer joining means can be carried out simultaneously, the carcass band can be molded. Such time can be greatly reduced.

  In this carcass band molding system, the drum support means supports at least one of the first and second molding drums by offsetting them by an equal distance from each other in parallel with each other and in parallel with each other. When the drum is provided so as to rotate about the axis, the configuration of the drum support means can be simplified.

  When each of the first and second molding drums is provided with an inner joining means that faces the outer joining means, and each of the outer joining means and the inner joining means is provided with an outer drawing claw and an inner drawing claw, these moldings are formed. By pulling both ends of the unvulcanized belt-shaped carcass ply material supplied around the drum to each other in the circumferential direction, both end surfaces of the unvulcanized belt-shaped carcass ply material can be reliably butted and joined. Therefore, it is possible to contribute to improvement of various performances such as improvement of tire uniformity.

  When the second molding drum is provided with the second segment displacement means for displacing only a part of the segment divided into a plurality in the circumferential direction inward in the radial direction, the first cylindrical carcass ply material is held. Since the second cylindrical carcass ply material on the second molding drum can be reduced in diameter when the transferred means is advanced and displaced toward the second molding drum, the transfer means is advanced and displaced. Unintentional contact (collision) between the first cylindrical carcass ply material and the second cylindrical carcass ply material can be effectively prevented. In addition, since the amount of diameter reduction of the second cylindrical carcass ply material is suppressed to a necessary amount, it is not excessively deformed.

  Holding means for holding the second unvulcanized belt-shaped carcass ply material is alternately provided for the plurality of segments, and only the segment provided with the holding means is displaced radially inward by the second segment displacement means. In this case, since the second unvulcanized belt-shaped carcass ply material wound on the second molding drum can be reliably reduced in diameter in the circumferential direction under the action of the holding means, The risk of collision between the first cylindrical carcass ply material and the second cylindrical carcass ply material when the transfer means is advanced and displaced can be reliably removed.

It is a rough-line side view which shows the whole carcass band shaping | molding system according to this invention. FIG. 2 is a schematic plan view showing the periphery of drum support means of the carcass band molding system shown in FIG. 1. The supply means of the carcass band molding system shown in FIG. 1 is shown, (a) is a schematic line side view, and (b) is a schematic line front view. FIG. 4 is a schematic side view showing a state in which a long carcass ply material is fed out from the state shown in FIG. 3A and placed across both a long material table and a belt material table. It is a rough line side view which shows the attitude | position which supplies the unvulcanized belt-shaped carcass ply raw material cut | disconnected by the desired length toward the molding drum under the function of a conveyance means. FIG. 2 is a schematic cross-sectional view of the molding drum provided in the carcass band molding system shown in FIG. 1 in a side view. FIG. 7 is a schematic cross-sectional view showing a posture in which the molding drum shown in FIG. 6 is rotated counterclockwise to the nearest one rotation. FIG. 7 is a schematic cross-sectional view showing the molding drum shown in FIG. 6 together with the outer joining means in a posture in which the molding drum is rotated once counterclockwise. 8A is a schematic cross-sectional view showing the outer joining means and the inner joining means shown in FIG. 8 in a posture in which a bending portion is formed under a reduced diameter displacement of the molding drum, and FIG. 8B is an outer joining means. FIG. 6C is a schematic cross-sectional view showing a posture in which the outer pulling nail and the inner pulling nail are made to function by further lowering the outer joining means from the position shown in FIG. It is an approximate line sectional view. FIG. 6 is a schematic cross-sectional view showing another second molding drum according to the present invention together with outer joining means. It is an approximate line sectional view shown with the posture which made the 2nd forming drum shown in Drawing 10 function. FIG. 3 is a schematic cross-sectional view in side view of transfer means provided in the carcass band molding system shown in FIG. 1.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
First, the entire carcass band molding system according to the present invention will be described. In the embodiment shown in FIG. 1 and FIG. 2, the carcass band molding system of the present invention relates to first and second cylindrical carcass ply materials disposed on the radially outer side and the inner side of the carcass band, respectively. Supply means 10 for supplying first and second unvulcanized belt-like carcass ply materials for molding the first and second unvulcanized belt-like carcass ply materials supplied to the outer peripheral surface Each of the molding drum 20A and the second molding drum 20B in which the second unvulcanized belt-like carcass ply material is wound around the outer peripheral surface thereof, and at least one molding drum (in the example shown, the first molding drum 20A and 1 each of the second molding drums 20B, a total of two), and both the first and second molding drums 20A and 20B are connected to the central axis m1 of each molding drum, A drum support means 30 that supports the mold drums so as to be rotatable about two and rotates and displaces these molding drums between a position adjacent to the supply means 10 and a position separated from the supply means 10, and first and second molding drums Outer joint means 40 for joining both ends of the first and second unvulcanized belt-shaped carcass ply materials wound on 20A and 20B, and forward / backward displacement along the central axis m1 of the first molding drum 20A And the transfer means 50 which hold | maintains the 1st cylindrical carcass ply raw material joined on this shaping | molding drum from the outer peripheral surface side is provided. Then, in the state where the transfer means 50 holds the first cylindrical carcass ply material, the transfer means 50 is subjected to the second molding in which the second cylindrical carcass ply material after the rotational displacement is wound. A carcass band comprising two layers of inner and outer cylindrical carcass ply materials by advancing displacement toward the drum 20B and pressing the second cylindrical carcass ply material inside the first cylindrical carcass ply material. Is molded.
Here, as described above, the drum support means 30 of the carcass band molding system according to the present invention is configured to rotationally displace each molding drum between a position adjacent to the supply means 10 and a position separated from the supply means 10. In addition to the above, for example, a carriage that rotatably supports each molding drum may be disposed so as to drive on an oval endless movement path. Further, the drum support means 30 is not limited to the one that rotates and displaces each molding drum within the vertical plane (the central axes m1 and m2 and the axis M are parallel), and each drum is rotated and displaced within the horizontal plane (center). There is no particular limitation as long as each molding drum can be displaced between a position adjacent to the supply means 10 and a position separated from the supply means 10, such as those having the axis M perpendicular to the axes m1 and m2.

Next, the supply means 10 of the carcass band molding system described above will be described in detail.
The supply means 10 alternately supplies the first and second unvulcanized belt-like carcass ply materials to the corresponding first and second molding drums 20A and 20B, respectively. In the example shown in FIG. 5, a long material table 11a for placing the long first carcass ply material WT1 and a long material table 11b for placing the long second carcass ply material WT2 Are vertically arranged so as to be movable up and down, and one strip material table 12, one transport means 13, and one cutting blade 14 are provided on the transport destination side of the long material tables 11a and 11b. . In addition, in this embodiment, the conveyance destination side means the side which goes to the strip | belt-shaped material table 12 from the elongate material tables 11a and 11b, and the reverse direction is called the conveyance origin side. Further, the first and second unvulcanized belt-like carcass ply materials may be different from each other in the type of cord disposed therein, the extending direction, and the type of rubber covering the cord. Also, they may be the same and can be appropriately selected according to the intended carcass band.

  In addition, although not shown on the transport side of the long material tables 11a and 11b, a roll-shaped material in which the long first and second carcass ply materials WT1 and WT2 are respectively wound. Each of the first and second carcass ply materials is supported so as to be rotatable about its central axis. Then, this is also omitted from illustration, for example, under the action of a motor or the like, from each of the roll-shaped first and second carcass ply materials, the first and second carcass ply materials WT1, each having a long shape, WT2 is intermittently delivered toward the transport destination side.

  The long material tables 11a and 11b are not shown in the figure, but are provided with, for example, a linear guide rail extending in the vertical direction and a lift slider guided by the linear guide rail. It is arranged so that it can be moved up and down by means of a lift driving means driven by a combination with a pinion, a combination of a ball screw and a motor, or a cylinder. Thereby, for the first and second molding drums 20A and 20B to be supplied under the action of the lifting drive means, either one of the long material tables 11a and 11b corresponding to the molding drum is Is moved up and down so that the upper surface of the plate is flush with the upper surface of the strip material table 12. In addition, in this embodiment, in addition to the above-described up-and-down displacement, what is provided so as to be able to advance and retract described below is configured according to the above-described up-and-down driving means, and therefore the following will be described. Omitted.

  Further, as shown in FIGS. 1 and 3A, the conveying means 13 uses, for example, negative pressure on the ends of the long first and second carcass ply materials WT1 and WT2 on the conveying destination side. While being held by suction, it can be moved back and forth between the long material table 11a, 11b through the belt-shaped material table 12 and the position of the molding drum that is rotationally displaced to the position adjacent to the supply means 10 described above. And the conveyance destination side holding | maintenance part 13a provided so that raising / lowering displacement is possible, and the conveyance side side of the 1st and 2nd unvulcanized belt-shaped carcass ply material cut | disconnected by required length with the cutting blade 14 are carried out. In addition to holding the end portion, similarly to the transfer destination side holding portion 13a, a transfer source side holding portion 13b provided to be movable back and forth and to be movable up and down is provided.

And the cutting blade 14 is arrange | positioned between the long material tables 11a and 11b and the strip | belt-shaped material table 12, as shown to Fig.3 (a), and FIG.3 (b). As shown in FIG. 2, the cutting blade portions 14a and 14b are formed. Here, the cutting blade 14 can be moved up and down so as to rise to a position exceeding the upper surface of the belt-shaped material table 12, and each of the cutting blade portions 14a and 14b has a long first shape and a second shape. The carcass ply materials WT1 and WT2 are provided so as to run in opposite directions along the width direction.
As shown in FIG. 4, the long first and second carcass ply materials WT1 and WT2 are lifted while being cut along with the upward displacement of the cutting blade 14, but are held on the conveyance source side. Since the support wall portion 13c provided on the conveyance source side of the portion 13b abuts on the upper surface of the carcass ply material and supports it without displacement, the carcass ply material can be cut at a desired position.
Accordingly, the long first and second carcass ply materials WT1 and WT2 placed between the long material tables 11a and 11b and the strip material table 12 are cut blades. 14 and under the action of the support wall 13c, the first and second unvulcanized belt-shaped carcass ply materials of the required length are cut into the first and second as shown in FIG. The unvulcanized belt-shaped carcass ply materials WS1 and WS2 are, under the action of the conveyance destination side holding portion 13a and the conveyance source side holding portion 13b, end portions 1s and 2s on the conveyance destination side and end portions on the conveyance source side. 1e and 2e are held and supplied to the corresponding first and second molding drums 20A and 20B.

Next, the first and second molding drums 20A and 20B, the drum support means 30, and the outer joining means 40 will be described in detail.
As shown in FIG. 1, at least one of the first and second molding drums 20A and 20B is provided, and in the example shown in FIG. The molding drums 20A and 20B are offset by an equal distance, and the molding drums 20A and 20B are supported around their central axes m1 and m2 so as to be rotatable and parallel to each other. Further, the drum support means 30 is supported so as to be rotatable around the axis M, and supplies the first molding drum 20A and the second molding drum 20B under the action of a motor (not shown), for example. It can be rotationally displaced between a position adjacent to the means 10 and a position separated from the position. When a plurality of first and second molding drums 20A and 20B are provided, the first and second molding drums 20A and 20B are alternately arranged around the axis M in units of one to a plurality. In addition, it is preferable that the center angles between the molding drums be equal.
Further, the outer joining means 40 is disposed corresponding to one of the positions of the molding drum, and is provided so as to be able to move forward and backward in the direction perpendicular to the central axis of the molding drum. In the example shown, it is disposed at a position separated from the supply means 10 and is moved up and down in the vertical direction (vertical direction in the illustrated example) with respect to the central axis of the second molding drum 20B displaced at the separated position. To do. The outer joining means 40 may be one that overlaps and joins the winding end end on the winding start end of the unvulcanized belt-shaped carcass ply material wound on the molding drum, For example, it is preferable that the end surfaces of both end portions are butt-joined so that the uniformity of the tire can be improved.

  And the 1st and 2nd molding drum 20A, 20B which shows the detail in FIG. 6 is equipped with segment 21A, 21B divided | segmented into multiple pieces by the circumferential direction, and these segments 21A, 21B are illustrated. Is omitted, but, for example, a guide rail inclined obliquely outward in the radial direction while being along the axial direction of each molding drum, and an inclination slider guided by the guide rail are provided. The first and second segment displacing means are connected in the same manner as described above, whereby the segments 21A and 21B are moved inward and outward in the radial direction under the action of the first and second segment displacing means. By moving forward and backward, the outer peripheral surfaces of the first and second molding drums 20A and 20B are expanded and contracted.

In addition, the first and second molding drums 20A and 20B are supplied from the transport destination side holding unit 13a and the transport source side holding unit 13b, and the first and second unvulcanized belt-like carcass ply material WS1. The winding start side suction portions 22A and 22B that hold the end portions 1s and 2s of the transport destination side of WS2, for example, by the suction pad V that sucks negative pressure and the end portions 1e and 2e on the transport source side are wound. Winding end side adsorbing parts 23A and 23B that are held in the same manner as the start side adsorbing parts 22A and 22B, and the first and second unvulcanized belt-like carcass ply materials WS1 and WS2 are first and Misalignment of the set when winding around the outer peripheral surfaces of the second molding drums 20A and 20B is effectively prevented. In the illustrated example, the winding start side suction portions 22A and 22B and the winding end side suction portions 23A and 23B are shaped so that the portions facing each other protrude, and cooperate with each of the segment displacement means described above. Alternatively, it moves forward and backward in the radial direction under the action of a single displacement means.
As a result, the first and second molding drums corresponding to the end portions 1s and 2s on the transport destination side of the first and second unvulcanized belt-like carcass ply materials WS1 and WS2 supplied from the supply means 10 are provided. 20A and 20B are held under the action of the winding start side suction portions 22A and 22B, and the first and second molding drums 20A and 20B are rotated around the axis thereof, and the end portion on the conveyance source side As shown in FIG. 8, the first and second unvulcanized belt-like carcass ply materials WS1 and WS2 are held in the first and second unvulcanized belt-like carcass ply materials WS1 and WS2 by holding the winding end adsorption portions 23A and 23B as shown in FIG. And it winds on the outer peripheral surface of 2nd shaping | molding drum 20A, 20B.

Then, as shown in FIGS. 6 to 9, between the winding start side adsorbing portions 22 </ b> A and 22 </ b> B and the winding end side adsorbing portions 23 </ b> A and 23 </ b> B, the first joint is provided in cooperation with the outer joining means 40. In addition, it is preferable to provide inner joining means 24A and 24B for butting and joining the end faces of both end portions of the second unvulcanized belt-like carcass ply materials WS1 and WS2.
Here, the inner joining means 24A, 24B includes projecting portions 25A, 25B that can be displaced toward the outer side in the radial direction, and a pair of inner attracting claws 26A located on both sides in the circumferential direction with the projecting portions 25A, 25B interposed therebetween. 26B, and the outer joining means 40 opposed to the inner joining means 24A, 24B is provided with a pair of outer pulling claws 41.
In the example shown in the drawing, a plurality of pin-like protrusions 25A and 25B are provided at a predetermined interval in the central axis direction of the first and second molding drums 20A and 20B, and a pair of The inner drawing claws 26A, 26B are alternately arranged opposite to each other at a predetermined interval in the central axis direction of the first and second molding drums 20A, 20B, and the hinge pin p is the center. The inner pulling claws 26A, 26B on one side are provided so as to be swingable in a direction to fall on the inner pulling claws 26A, 26B on the other side. In addition, the pair of outer pulling claws 41 are also arranged alternately facing each other at a required interval in a direction corresponding to the central axis of the first and second molding drums 20A and 20B. Centering on the hinge pin p, an outer pulling claw 41 on one side is provided so as to be swingable in a direction to fall on the outer pulling claw 41 on the other side.

Furthermore, as shown in FIG. 6, the segments 21A and 21B disposed at positions facing the inner joining means 24A and 24B across the central axes of the first and second molding drums 20A and 20B, For example, it is preferable to provide a suction pad V that sucks negative pressure, and also to hold the circumferential intermediate portions of the first and second unvulcanized belt-like carcass ply materials WS1 and WS2. If the segments 21A and 21B do not exist at the positions facing the inner joining means 24A and 24B as in the example shown in the figure, either one of the segments or both of the segments as shown in the figure are omitted. Provided in 21A and 21B.
Accordingly, the circumferences of the first and second unvulcanized belt-like carcass ply materials WS1 and WS2 wound on the outer peripheral surface under the reduced diameter posture of the first and second molding drums 20A and 20B. In addition to effectively preventing problems such as the carcass ply material falling off from the molding drum, for example, due to the fact that the direction intermediate portion is largely separated from the segments 21A and 21B, the first and second unvulcanized products can be prevented. A set shift when the belt-shaped carcass ply materials WS1 and WS2 are wound around the outer peripheral surfaces of the first and second molding drums 20A and 20B is also effectively prevented.

Here, the second segment displacement means described above selects a segment to be displaced inward and outward in the radial direction by a switching mechanism such as a cam (not shown), and only a part of the plurality of segments 21B is radially inward. It is preferable to be displaced. That is, the second molding drum 20B can displace all of the plurality of segments 21B inward and outward in the radial direction, and, for example, only a part of the segments 21B can be radially inward under the action of the switching mechanism. Can be displaced. Thereby, as will be described later, all the segments 21B of the second molding drum 20B are displaced radially outward to wind the second unvulcanized belt-shaped carcass ply material WS2, and then all the segments 21B are wound. By displacing inward in the radial direction, both ends can be butt-joined reliably. In addition, by displacing only a part of the segment 21B inward in the radial direction, the second cylindrical carcass ply material can be deformed in a reduced diameter. Unintentional contact (collision) between the cylindrical carcass ply material and the second cylindrical carcass ply material can be effectively prevented. Moreover, since the amount of diameter reduction of the second cylindrical carcass ply material is suppressed to a necessary amount, it is not excessively deformed.
In this case, as shown in FIG. 10, as a holding means for holding the second unvulcanized belt-like carcass ply material WS2, for example, suction pads V for negative pressure suction are provided in a plurality of segments 21B. In the case where only the segment 21B provided with the holding means is displaced inward in the radial direction, it is provided on the second molding drum 20B. Since the wound second unvulcanized belt-shaped carcass ply material WS2 can be reliably reduced in diameter in the circumferential direction under the action of the holding means, the first and second cylindrical shapes When the carcass ply material is pressure-bonded, it is possible to more reliably remove the fear that the carcass ply materials will unintentionally contact each other.
As shown in FIG. 11, when the holding means are alternately provided one by one, when the number of segments 21B is an even number, the segments 21B provided with the holding means are adjacent to each other as in the example shown in the figure. Although not shown, even if the segments 21B not provided with the holding means are adjacent to each other, if the adjacent segments 21B are one set, the holding means are provided alternately.

Next, the transfer means 50 will be described in detail.
The transfer means 50 removes the first cylindrical carcass ply material joined on the first molding drum 20A from the first molding drum 20A and holds it from the outer peripheral surface side. After the dynamic displacement, the second cylindrical carcass ply that is moved forward and displaced toward the second molding drum 20B while holding the first cylindrical carcass ply material and joined on the second molding drum 20B. The material is pressed against the inside of the first cylindrical carcass ply material.

  Here, the transfer means 50 shown in FIG. 12 includes a holding portion 51 including an annular base portion 51a and a leg portion 51b provided so as to protrude downward from the base portion 51a, and the holding portion 51 as a first portion. And a transfer section 52 that moves forward and backward along the central axis of the molding drum 20A.

  The holding unit 51 includes, on the inner peripheral side of the base 51a, a plurality of suction units 53 (for example, four in the illustrated example) that are suctioned with negative pressure and spaced apart in the circumferential direction (the illustrated example). These suction portions 53 are attached to the base portion 51a and connected to the suction portions 53, and the radius of the base portion 51 is determined based on the operation of the suction portion advancing / retreating displacement means 54 made of, for example, a cylinder. It moves forward and backward in the direction. As a result, the suction portions 53 are operated under the attitude of the suction portions 53 toward the radially inner side to hold the first cylindrical carcass ply material from the outer peripheral surface side.

  For example, as shown in FIG. 12, in the case of providing a lifting means 55 for moving the holding portion 51 up and down, and a transverse means 56 for moving the holding portion 51 in a direction perpendicular to the lifting direction on the vertical plane, The centering adjustment between the holding portion 51 and each molding drum at the time of installation of the carcass band molding system can be performed efficiently.

  In forming a carcass band including the inner and outer two-layer cylindrical carcass ply materials using the carcass band molding system configured as described above, first, as shown in FIG. The elongated material table 11a for the first carcass ply material WT1 is displaced to the same height as the strip material table 12, and the transport destination side holding portion 13a is moved to the first elongated shape. The carcass ply material WT1 is displaced on the end 1s on the conveyance destination side.

  Next, the transport destination side holding portion 13a holds the end portion 1s on the transport destination side of the long first carcass ply material WT1, and intermittently feeds the roll-shaped first carcass ply material (not shown). Then, the transport destination side holding part 13a is advanced and displaced by a predetermined amount of movement, and the long first carcass ply material WT1 is straddled between the belt-shaped material table 12 and the long material table 11a. As shown in FIG. 4, the carrier-side holding portion 13b is advanced and displaced until the support wall portion 13c is located on the cutting blade 14, and further, the first carcass having a long shape is mounted. A downward displacement is made toward the ply material WT1.

  Thereafter, under the rising posture of the cutting blade 14, the cutting blade portions 14a and 14b are made to run in the opposite direction to each other along the width direction of the long first carcass ply material WT1 to form a long shape. The first carcass ply material WT1 is cut to a predetermined length.

  After that, the transport side end 1s is held by the transport side holding unit 13a, and the transport side end 1e is held by the transport side holding unit 13b as shown in FIG. One unvulcanized belt-like carcass ply material WS1 is advanced and displaced on the first molding drum 20A in which all the segments 21B are displaced radially outward.

  Next, as shown in FIG. 6, the end 1 s on the conveyance destination side is held by the winding start side adsorption unit 22 </ b> A of the first molding drum 20 </ b> A, while the holding at the conveyance destination side holding unit 13 a is released. Then, as shown in FIG. 7, the first molding drum 20A is rotated around its central axis (counterclockwise in the illustrated example), so that the first unvulcanized belt-shaped carcass ply material WS1 is It is wound on the first molding drum 20A. The transport side end 1e held by the transport source side holding unit 13b may be released from the transport source side holding unit 13b as well as being released from the transport source side holding unit 13b. You may make it hold | maintain also during winding by carrying out displacement displacement of this conveyance source side holding | maintenance part 13b with rotation of the 1st shaping | molding drum 20A under holding | maintenance by the holding | maintenance part 13b.

  Thereafter, the end 1e on the transport side that has been released from being held by the transport side holding unit 13b is held by the winding end suction unit 23A of the first molding drum 20A, so that the end surface of the end 1s After making the end face of the end portion 1e substantially face each other with the inner joining means 24A interposed therebetween, the projecting portion 25A is advanced and displaced outward in the radial direction. Thereafter, under the action of the drum support means 30, as shown in FIG. 8, the first molding drum 20A is rotationally displaced to the side where the outer joining means 40 is disposed.

  Thereafter, all the segments 21B were displaced inward in the radial direction while holding the first unvulcanized belt-like carcass ply material WS1 under the action of the suction pad V, thereby being wound on the first molding drum 20A. A surplus is generated in the length of the first unvulcanized belt-like carcass ply material WS1. As a result, as shown in FIG. 9A, the end 1s on the transport destination side held by the winding start side suction portion 22A and the end on the transport source side held by the winding end side suction portion 23A. Between the part 1e, the bending part T which becomes convex on the radial direction outer side is formed. In addition, since the diameter reduction displacement of the first molding drum 20A is performed under the advancement posture of the protruding portion 25A, even if the bending portion T is formed, the end portion 1s on the transport destination side and the end portion 1e on the transport source side Do not overlap each other.

  Thereafter, as shown in FIG. 9 (b), the projecting portion 25A is displaced backward inward in the radial direction, and the outer joint means 40 is displaced downward as indicated by an arrow in the drawing, so that the bent portion T The outer drawing claw 41 and the inner drawing claw 26A are brought into contact with the outer surface and the inner surface, respectively.

Thereafter, the outer joining means 40 is further displaced downward, and each of the outer pulling pawl 41 and the inner pulling pawl 26A is swung around the hinge pin p, whereby the end face of the end 1s and the end face of the end 1e are The first unvulcanized belt-like carcass ply material WS1 is butt-joined in a cylindrical shape by firmly pressing each other.
On the other hand, in the second molding drum 20B, the step of supplying the second unvulcanized belt-shaped carcass ply material WS2 from the supply means and winding the second unvulcanized belt-shaped carcass ply material WS2 on the second molding drum 20B is performed as described above. It is possible to proceed simultaneously with the step of joining both end portions of the unvulcanized belt-like carcass ply material WS1.

Thereafter, the drum supporting means 30 is rotated to displace the first molding drum 20A including the first cylindrical carcass ply material to a position adjacent to the supply means 10 shown in FIG. The transfer means 50 is advanced and displaced along the central axis m1 of one molding drum 20A. After that, the suction portion 53 of the transfer means 50 is moved forward inward in the radial direction, and the suction portion 53 is acted and the first molding drum 20A is displaced in diameter to be displaced, thereby the first cylindrical carcass ply. The material is held by the suction portion 53, and further, the first molding drum 20A is displaced in diameter and the transfer means 50 is moved backward to displace the first cylindrical carcass ply material from the first molding drum 20A. It is removed and held by the transfer means 50.
On the other hand, in the second molding drum 20B, the step of butting and joining both end portions of the second unvulcanized belt-shaped carcass ply material WS2 is the step of taking out the first cylindrical carcass ply material described above by the transfer means 50. You can proceed at the same time. Thereby, the carcass band which butt-joins the cylindrical carcass ply material of two layers inside and outside can be shape | molded.
After the first cylindrical carcass ply material is removed by the transfer means 50, the first molding drum 20A has a new first cylindrical carcass ply material to be molded next. It is preferable to wind the unvulcanized belt-shaped carcass ply material WS1 around its outer peripheral surface.

Thereafter, the drum support means 30 is rotated to displace the second molding drum 20B provided with the second cylindrical carcass ply material to a position adjacent to the supply means 10, and subsequently, the first cylindrical carcass The transfer means 50 holding the ply material is advanced and displaced toward the second molding drum 20B.
Here, when only a part of the segment 21B is displaced inward in the radial direction, the second cylindrical carcass ply material can be displaced in a reduced diameter. Unintentional contact between the cylindrical carcass ply material and the second cylindrical carcass ply material can be effectively prevented. Moreover, since the amount of diameter reduction of the second cylindrical carcass ply material is suppressed to a necessary amount, it is not excessively deformed.
In particular, when the suction pads V are alternately provided for the plurality of segments 21B and only the segment 21B having the suction pads V is displaced inward in the radial direction, the second cylindrical carcass ply material is Since the diameter can be reliably reduced in the direction at equal intervals and under the action of the holding means, the possibility of collision between the first cylindrical carcass ply material and the second cylindrical carcass ply material can be reliably removed. Can do.

Thereafter, the second molding drum 20B is expanded and displaced, so that the second cylindrical carcass ply material is pressure-bonded to the inside of the first cylindrical carcass ply material, so that the inner and outer two-layer cylindrical carcass A carcass band with ply material is molded.
In the first molding drum 20A, butt joining of both end surfaces of the newly wound first unvulcanized belt-like carcass ply material WS1 can be advanced.

  After that, all the segments 21B of the second molding drum 20B are displaced radially outward, the transfer means 50 is moved backward, and a carcass band held by the transfer means 50 is not shown, for example, A new second unvulcanized belt-shaped carcass ply material WS2 is wound around the outer peripheral surface of the second molding drum 20B while being transferred to the band drum wound with the inner liner.

Thereafter, when the drum support means 30 is rotated, since the next first cylindrical carcass ply material is already molded on the first molding drum 20A, the transfer means 50 is advanced and displaced as it is. Can do.
As described above, when the carcass band is continuously formed, the time required for forming can be further shortened.

In the example shown in FIG. 1, the outer joining means 40 is disposed at a position separated from the supply means 10, and the transfer means 50 is disposed at a position adjacent to the supply means 10. The joining means 40 may be disposed at a position adjacent to the supply means 10, and the transfer means 50 may be provided at a position separated from the supply means 10.
In this case, the first unvulcanized belt-like carcass ply material WS1 supplied from the supply means 10 is wound around the outer peripheral surface of the first molding drum 20A, and then the both ends thereof are joined to form the first A cylindrical carcass ply material is formed. Thereafter, by rotating the drum support means 30, the first cylindrical carcass ply material is applied to the first molding drum 20A displaced to a position separated from the supply means 10 under the action of the transfer means 50. Then, it is detached from the first molding drum 20A and is held by the transfer means 50. On the other hand, in the second molding drum 20B, the second unvulcanized belt-shaped carcass ply material WS2 supplied from the supply means 10 while the process of taking out the first cylindrical carcass ply material by the transfer means 50 is advanced. , And the process of joining the both ends can proceed simultaneously.

DESCRIPTION OF SYMBOLS 10 Supply means 20A 1st shaping | molding drum 20B 2nd shaping | molding drum 21A, 21B Segment 22A, 22B Winding start side adsorption | suction part 23A, 23B Winding end side adsorption | suction part 24A, 24B Inner joining means 26A, 26B Inner drawing nail | claw 30 Drum support means 40 Outer joining means 41 Outer pulling claws 50 Transfer means m1, m2 Center axis of molding drum M axis V Adsorption pad (holding means)
WT1 Elongated first carcass ply material WT2 Elongated second carcass ply material WS1 First unvulcanized belt-shaped carcass ply material WS2 Second unvulcanized belt-shaped carcass ply material

Claims (6)

A cylindrical carcass ply material in which both ends of an unvulcanized belt-like carcass ply material are joined is disposed inside and outside in the radial direction, and a carcass band including two layers of inner and outer cylindrical carcass ply materials is molded. A carcass band molding system,
First and second non-additions for molding each of the first cylindrical carcass ply material disposed on the radially outer side and the second cylindrical carcass ply material disposed on the radially inner side Providing supply means to supply the belt-shaped carcass ply material,
Each of the first and second cylindrical carcass ply materials for molding the first and second cylindrical carcass ply materials, each having at least one molding drum capable of expanding and contracting, is rotatably supported around the central axis of each molding drum. And a drum support means for displacing between a position adjacent to the supply means and a position separated from the supply means,
Outer joining means for joining the both ends of the first and second unvulcanized belt-like carcass ply materials supplied around the molding drum in an attitude in the vertical direction with respect to the central axis of the molding drum, While being arranged corresponding to any one of the positions,
A transfer means for holding the first cylindrical carcass ply material formed in a cylindrical shape on the first molding drum from the outer peripheral surface side by moving back and forth along the central axis of the molding drum is provided on the other side of the molding drum. A carcass band molding system that is disposed in correspondence with the above position.   The drum support means supports at least one of the first and second molding drums in parallel with each other by offsetting them by an equal distance from the axis, and supports each molding drum on the axis. The carcass band molding system according to claim 1, wherein the carcass band molding system is configured to rotate and displace around.   Each of the first and second molding drums has inner joining means facing the outer joining means, and each of the outer joining means and the inner joining means is an unvulcanized belt-like shape supplied around the molding drum. 3. An outer pulling claw and an inner pulling claw, each of which is provided with an outer pulling claw and an inner pulling claw that draws both ends of the carcass ply material in the circumferential direction and butt-joins both end faces of the unvulcanized belt-shaped carcass ply material. The carcass band molding system described.   4. The carcass band molding system according to claim 3, wherein the second molding drum includes second segment displacing means for displacing only a part of the segment divided into a plurality in the circumferential direction inward in the radial direction. .   The holding means for holding the second unvulcanized belt-like carcass ply material is provided alternately in the circumferential direction with respect to the plurality of segments, and only the segment provided with the holding means is provided by the second segment displacement means. The carcass band molding system according to claim 4, which displaces inward in the radial direction. Using the carcass band molding system according to any one of claims 1 to 5, when molding a carcass band comprising a cylindrical carcass ply material of two layers inside and outside,
After the first unvulcanized belt-shaped carcass ply material supplied under the operation of the supply means is wound around the outer peripheral surface of the first molding drum, the first molding drum is moved to a position corresponding to the outer joining means. The outer joining means is moved forward and displaced to join both ends of the first unvulcanized belt-shaped carcass ply material wound around the outer peripheral surface of the first molding drum,
Next, the first cylindrical carcass ply material is placed on the outer peripheral surface side of the first molding drum displaced to a position separated from the outer joining means under the operation of the drum support means, with the transfer means being advanced. After the holding means, the transfer means is retracted and displaced, while both ends of the second unvulcanized belt-shaped carcass ply material wound around the outer peripheral surface of the second molding drum are supplied under the operation of the supply means. Is displaced to a position corresponding to the outer joining means, and the both end portions are joined under the advanced posture of the outer joining means,
Thereafter, under the operation of the drum support means, the transfer means holding the first cylindrical carcass ply material is advanced and displaced with respect to the second molding drum displaced to a position separated from the outer joining means, and the first A method for molding a carcass band, wherein the second cylindrical carcass ply material on the second molding drum is press-bonded to the inside of the first cylindrical carcass ply material.

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