JP2008110586A - Method and apparatus for formation of joined end part of cord-including rubber member and method of joining cord-including rubber member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for the formation of joined end parts of cord-including rubber members and a method of joining cord-including rubber members which enable joining, without a level difference, cords at in-parallel ends of cord-including rubber members with two or more cords arranged in parallel at specified pitches. <P>SOLUTION: The method of forming joined end parts comprises: arranging two or more grooving portions 4, 5 and 6, each grooving portion consisting of a pair of grooving rollers, in series in the order of increasing grooving widths of grooving rollers 4a, 5a and 6a; turning each grooving roller between cords at the in-parallel ends of the cords in the extending direction of the cords, with a cord-including rubber member M sandwiched vertically; increasing the space between the cords gradually so as to form joined end parts; superimposing the joined end parts of the cord-including rubber members M; and laying the cords at joined end parts between the cords at other joined end parts and pressing them together. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a method and apparatus for forming a joining end portion of a corded rubber member and a cording rubber member joining method, and more specifically, a cord parallel direction end of a corded rubber member in which a plurality of cords are arranged in parallel at a predetermined pitch. The present invention relates to a method and an apparatus for forming a joining end portion of a corded rubber member and a method for joining the corded rubber member, which can join the cords in a parallel state with a predetermined pitch between the portions without joining a step.

  A rubber member with a cord in which a plurality of cords such as steel cords are arranged in parallel at a predetermined pitch on a rubber member is widely used as a component member of a rubber product such as a tire, and is used as a carcass member or the like, for example, in manufacturing a tire. ing. When such corded rubber members are joined together with the cords in parallel with each other in the cord parallel direction ends, when the corded rubber members are joined in an overlapping manner, the joined portion is more than the other part. Since the thickness becomes thick and a step is produced, which adversely affects the quality of products using this member, various methods of joining with a small step have been proposed (see, for example, Patent Document 1).

In Patent Document 1, two cord-corresponding end portions of two cord-containing rubber members are overlapped and placed on the support surface so that the overlap portion is positioned on a groove provided on the support surface. Thereafter, the disk member is pressed against the upper surface of the overlap portion and rolled in the cord extending direction to press the overlap portion against the groove portion. Due to the pressing of the disk member, the cords that overlap in the overlapped portion enter between each other and are in a parallel state. For this reason, when the upper and lower cords of the overlap portion overlap each other across a plurality of parallel cords, the upper and lower cords cannot enter between each other, and the cords at the joint portion are stably set to the predetermined ones. There was a problem that the pitch could not be joined in parallel.
JP-A-4-319423

  SUMMARY OF THE INVENTION An object of the present invention is to provide a cord-containing rubber that enables a cord to be placed in a parallel state at a predetermined pitch between end portions in a cord parallel direction of cord-containing rubber members in which a plurality of cords are arranged in parallel at a predetermined pitch, and to be joined without a step. It is an object of the present invention to provide a method and apparatus for forming a joining end portion of a member and a method for joining a corded rubber member.

  In order to achieve the above object, the method for forming the joining end portion of the corded rubber member according to the present invention includes joining the cords in parallel with each other in the cord parallel direction ends of the corded rubber member in which a plurality of cords are arranged in parallel at a predetermined pitch. A method for forming a joining end portion of a corded rubber member, wherein a plurality of grooved portions formed of a pair of grooved rollers whose peripheral surfaces are opposed to each other are arranged in order of increasing groove width of the grooved rollers. A state in which the pair of grooving rollers are moved relative to each other in the cord extending direction of the corded rubber member, and the corded rubber member is sandwiched in the thickness direction between the cords of the cord parallel end portions of the corded rubber member. Then, by rolling in the cord extending direction, the interval between the cords is gradually widened to form the joining end portion.

  Moreover, the formation method of the joining end part of the rubber member with another cord according to the present invention is a cord for joining the cords in parallel with each other in the cord parallel direction ends of the corded rubber member in which a plurality of cords are arranged in parallel at a predetermined pitch. A method for forming a joining end portion of a rubber member, which includes a pair of center rollers whose peripheral surfaces are opposed to each other, and a pair of grooved rollers whose peripheral surfaces provided on both sides of the pair of center rollers are opposed to each other. A plurality of the grooved portions are moved relative to each other in the cord extending direction of the corded rubber member in the order of the grooved width of the grooved roller, and each pair of center rollers is moved to the cord of the corded rubber member. A pair of grooved rollers provided on both sides of each of the pair of center rollers. The distance between the cords is gradually increased by rolling the cord-containing rubber member between the cords adjacent to each other where the pair of center rollers rolls in the cord extending direction while sandwiching the rubber member with the cord in the thickness direction. A pair of cutter rollers that are widened to form a joining end portion and whose peripheral surfaces are opposed to each other are corded with a cord-containing rubber member sandwiched in the thickness direction between the cords on which the respective pair of center rollers roll. Rolling in the extending direction cuts the rubber between the cords.

  The joining method of the corded rubber member of the present invention is such that the joining end portions of the corded rubber member having the joining end portions formed by the method for forming the joining end portions of the two corded rubber members described above are overlapped. The cords at one joining end are crimped so as to be positioned between the cords at the other joining end.

  Moreover, the apparatus for forming a joining end portion of a corded rubber member according to the present invention is a corded rubber for joining a cord in a parallel state between cord parallel direction ends of a corded rubber member in which a plurality of cords are arranged in parallel at a predetermined pitch. A device for forming a joining end portion of a member, wherein a plurality of grooved portions formed of a pair of grooved rollers with opposed circumferential surfaces are arranged in series in ascending order of the grooved width of the grooved roller, and A cord of the corded rubber member in which the placing plate for placing the corded rubber member with its end in the cord parallel direction projecting is provided and the plurality of grooved portions arranged in series are placed on the placing plate. It is configured to be relatively movable in the extending direction.

  In addition, the cord forming rubber member joining end portion forming apparatus according to the present invention is a cord for joining the cords in parallel in the cord parallel direction ends of the corded rubber members in which a plurality of cords are arranged in parallel at a predetermined pitch. A device for forming a joining end portion of a rubber member, comprising a pair of center rollers whose peripheral surfaces are opposed to each other and a pair of grooved rollers whose peripheral surfaces provided on both sides of the pair of center rollers are opposed to each other A plurality of grooving portions are arranged in series in ascending order of the grooving width of the grooving rollers, and the circumferential surface is opposed to each of the pair of center rollers in series on the rear side of the plurality of grooving portions. A pair of cutter rollers arranged and a placement plate for placing the corded rubber member is provided, and the plurality of grooved portions arranged in series and the pair of cutter rollers are placed on the placement plate. Shi It is characterized in that the relatively movable in the code extension direction of the cords rubber member.

  According to the former method and apparatus for forming a joining end portion of a corded rubber member according to the present invention, a plurality of grooved portions formed by a pair of grooved rollers with the circumferential surfaces facing each other are formed into groove widths of the grooved rollers. The corded rubber member is moved relative to the cord extending direction of the corded rubber member in ascending order, and each pair of grooving rollers has a thickness between the cords at the cord parallel direction ends of the corded rubber member. By rolling in the direction of extending the cord while sandwiched in the direction, it is possible to gradually widen the interval between the cords without forming excessive deformation or fluctuation at once in the rubber between the cords, thereby forming the joining end portion. In addition, the interval between codes can be expanded stably and without variation.

  According to the method and apparatus for forming the joining end portion of the corded rubber member according to the present invention, the pair of center rollers having the circumferential surfaces opposed to each other and the circumferential surfaces provided on both sides of the pair of center rollers are opposed to each other. A plurality of grooving portions comprising a pair of grooving rollers are moved relative to each other in the cord extending direction of the corded rubber member in ascending order of the grooving width of the grooving rollers, and each pair of center rollers is moved. And a pair of grooved rollers provided on both sides of the pair of center rollers and rolled in the direction of extending the cord with the corded rubber member sandwiched in the thickness direction between the cords of the corded rubber member Are rolled in the cord extending direction with the cord-containing rubber member sandwiched in the thickness direction between the adjacent cords between the cords on which the respective pair of center rollers roll. The gap between the cords is gradually widened to form a joining end portion, and a pair of cutter rollers whose circumferential surfaces are opposed to each other, a cord-containing rubber member is arranged between the cords on which the respective pair of center rollers roll. By rolling in the extending direction of the cord while sandwiched in the thickness direction, the formation of the joining end and the cutting of the corded rubber member can be performed simultaneously at any set position of the corded rubber member. Therefore, it is possible to further improve the work efficiency while having the effect of the former method and apparatus for forming the joining end.

  According to the joining method of the corded rubber member of the present invention, the joining end portions of the corded rubber member having the joining end portions in which the interval between the cords formed by any one of the above methods is stably expanded without variation. Since it is overlapped and crimped so that the cord at one joint end is located between the cords at the other joint end, the cord can be easily placed in a parallel state at a predetermined pitch at the end in the cord parallel direction. Can be joined together.

  Hereinafter, a method and an apparatus for forming a joining end portion of a corded rubber member and a cording rubber member joining method according to the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIGS. 1 and 2, the apparatus 1 (hereinafter referred to as “forming apparatus 1”) for forming the joining end portion of the corded rubber member of the present invention is a rectangular placing plate on which the corded rubber member M is placed. A grooving unit 3 is provided at one end of 2 via a slide mechanism 9.

  In this grooving unit 3, three grooving parts, a first grooving part 4, a second grooving part 5 and a third grooving part 6, are arranged in series, and these grooving parts 4, 5, 6 are Each of the grooved rollers 4a, 5a, 6a has a circumferential surface facing each other. The outer diameters of the respective grooving rollers 4a, 5a, 6a are the same, the tip cross-sectional shape is formed in a trapezoidal shape as illustrated in FIGS. 3 to 5, and the grooving widths are B1, B2, B3, The grooves are arranged in ascending order in the series arrangement direction, and the groove width B3 of the groove roller 6a of the third groove portion 6 is the largest.

  The pair of grooving rollers 4a and 4a is configured to mesh with the gears of the rotating shafts and rotate in the opposite direction, and the other pair of grooving rollers 5a, 5a and 6a, 6a have the same structure. ing. In addition, synchronous gears are provided between the upper groove roller 4a and the upper groove roller 5a and between the upper groove roller 5a and the upper groove roller 6a, respectively, and rotate in synchronization with each other. It has a structure. Thereby, all the grooving rollers 4a, 5a, and 6a of the 1st grooving part 4, the 2nd grooving part 5, and the 3rd grooving part 6 are rotated by driving one upper grooving roller 4a. It is configured to rotate synchronously.

  Further, a pressure bonding unit 11 illustrated in FIG. 7 is installed adjacent to the forming apparatus 1. The pressure-bonding unit 11 includes a pressure-bonding roller 12 and is configured to move close to and away from the peripheral surface of the winding drum 13 around which the corded rubber member M is wound and to move in the drum axial direction. The crimping unit 11 and the winding drum 13 may be arranged separately from the forming apparatus 1 or may be arranged directly connected to the forming apparatus 1.

  Next, the formation method of the joining end part of the rubber member with a cord of the present invention using this forming device 1 is explained.

  As illustrated in FIGS. 1 and 2, a cord-containing member M in which a plurality of cords S are juxtaposed at a predetermined pitch on an unvulcanized rubber R is placed on the placement plate 2 of the forming apparatus 1, and the end portion in the cord parallel direction M1 is projected from one end of the mounting plate 2. A positioning guide 10 protrudes from the other end side surface of the mounting plate 2, and the other cord parallel direction end M2 of the cord-containing member M is brought into contact with the positioning guide 10 so that one cord parallel direction end M1. It is advisable to make the protrusion protrude by a predetermined width. For example, the positioning guide 10 is configured to be movable so as to be close to and away from the grooving unit 3.

  As illustrated in FIGS. 3 to 5, a pair of grooved rollers 4 a from above and below between the cord S and the cord S on the end side of the cord parallel direction end M <b> 1 protruding from one end of the mounting plate 2, Similarly, the cord S and the cord S are sandwiched between the other pair of grooved rollers 5a, 5a and 6a, 6a.

  Thus, the thickness direction of the rubber member M with the cord between the cord S and the cord S of the cord parallel direction end portion M1 by the pair of grooving rollers 4a, 5a, 6a of the respective grooving portions 4, 5, 6 The grooved rollers 4a, 5a, 6a are rotationally driven while being sandwiched between them, and the grooved unit 3 is moved in the cord extending direction so that the first grooved portion 4 is at the head. Thereby, between the cord S and the cord S, the first grooving roller 4a, the second grooving roller 5a, and the third grooving roller 6a are rolled in a pressed state in the cord extending direction, While the space | interval between the cords S is gradually extended, the rubber | gum thickness of the unvulcanized rubber R between the cords S and S becomes thin, and the connection edge part J which is illustrated in FIG. 6 is formed. The distance between the cord S and the cord S at the connection end J is about twice as long as a predetermined pitch at which the cord S was originally arranged in parallel.

  In this method, each pair of grooved rollers 4a, 5a, 6a rolls in ascending order of the groove width, so that the unvulcanized rubber R between the cords S and S undergoes excessive deformation and fluctuation at a time. Without this, the interval between the codes S can be gradually increased. Therefore, it is possible to stably form the joint end J in which the interval between the cords S is increased as set without variation. Further, by rolling the grooving rollers 4a, 5a, and 6a, even if the cord S is meandering slightly, the cord S is straightened to form a joint end J that suppresses meandering. be able to.

  The three grooved portions 4, 5, 6 and the corded rubber member M may be moved relative to each other in the cord extending direction so that the grooved rollers 4a, 5a, 6a can roll. It is also possible to move the mounting table 2 and the corded rubber member M by fixing the grooved portions 4, 5 and 6.

  As illustrated in FIG. 6, the joining method of the rubber member M with cord of the present invention overlaps the joining ends J and J formed as described above, and the cord S of one joining end J is the other. After setting so as to be positioned between the cord S and the cord S of the joint end portion J, the joint end portions J and J are crimped. Specifically, as illustrated in FIG. 7, a corded rubber member M cut to a predetermined length corresponding to the circumferential length of the winding drum 13 is wound around the outer periphery of the winding drum 13 to join the joint end J , J are overlapped and set so that the cord S of one joint end J is positioned between the cord S and the cord S of the other joint end J. The joint ends J, J of each other have the gap between the cord S and the cord S stably expanded without variation, and can be easily set so that the cords S, S enter each other.

  In this state where the joining ends J and J are overlapped with each other, the pressure roller 12 of the pressure unit 11 is pressed on the overlap portion and the pressure roller 12 is rolled in the extending direction of the cord S. Let As a result, the corded rubber member M is crimped so that the cords S and S of the joint ends J and J enter between the cords S on the other side, and parallel with a predetermined pitch as illustrated in FIG. The rubber member M with cord is formed in an annular shape without being stepped.

  In this way, if the joining end portions J and J are formed at the cord parallel direction ends M1 and M1 of the corded rubber member M using the forming apparatus 1 of the present invention, only crimping is performed as described above. Thus, the cords S in the cord parallel direction ends M1 and M1 of the corded rubber member M can be joined in a parallel state without any step. In addition, the crimping | compression-bonding unit 11 is not limited to the structure illustrated in embodiment, What is necessary is just to be able to crimp | bond the overlap part of joining edge part J and J. FIG.

  When the present invention is applied to the manufacture of tires, there is no step between the joining ends of the carcass material in which the cords S such as a plurality of steel cords are parallel to the unvulcanized rubber R at a predetermined pitch without disturbing the predetermined pitch of the cord S. Can be joined. Therefore, if the carcass material joined in this way is used, the quality of tire uniformity and the like can be improved.

  In the above embodiment, the three grooving portions 4, 5, 6 are arranged in series with the grooving unit 3, but the number of arrangements is not limited to this, and according to the specifications of the corded rubber member M, etc. A suitable number may be set. Each grooved portion 4, 5, 6 can also be provided independently without being unitized, but when unitized, the structure of the forming apparatus 1 can be easily simplified, and the cord for forming the connecting end J The setting of the rubber member M can be easily performed. Further, the groove widths B1, B2, and B3 of the groove rollers 4a, 5a, and 6a are appropriately set so as to be in ascending order from the leading side in the rolling direction. Each of the grooving rollers 4a, 5a, and 6a may be configured to rotate independently without rotating synchronously.

  Further, when the interval between the cord S and the cord S is increased, the connection end portion J can be formed so that the groove depth between the cord S and the cord S is gradually increased. Therefore, when the rotating shafts of the respective grooving rollers 4a, 5a, 6a are at the same level (height), the outer diameters of the grooving rollers 4a, 5a, 6a are sequentially increased in the serial arrangement direction. Set to. Alternatively, when the outer diameters of the respective grooving rollers 4a, 5a, 6a are the same, the interval between the rotation centers of the respective pair of grooving rollers facing each other is set so as to be sequentially reduced in the serial arrangement direction. For example, the distance between the rotation centers of the pair of groove rollers 5a and 5a is made smaller than the distance between the rotation centers of the pair of groove rollers 4a and 4a, and the rotation centers of the pair of groove rollers 6a and 6a are further separated. Set a smaller interval.

  The joining end portion J is not only between the cord S and the cord S on the end side of the cord parallel direction end portion M1 of the corded rubber member M, but also a plurality of cords S adjacent to the end portion side cord S. It is also possible to form in a range over the range. Thus, when the width of the joint end portion J is increased, it becomes easier to obtain a more stable joint strength.

  The number of the grooved portions 4, 5 and 6 arranged as described above, unitization, the setting of the grooved width of the grooved rollers 4a, 5a and 6a, the rotation mechanism of each grooved roller 4a, 5a and 6a, and the code S When the gap between the cord S and the cord S is increased, the connecting end portion J is formed by gradually increasing the groove depth between the cord S and the cord S, or the width of the joining end portion J is widened. This is also true for other embodiments described below.

  9 and 10 illustrate another embodiment of the forming apparatus 1. Since the basic structure of the forming apparatus 1 is the same as that of the forming apparatus 1 illustrated in FIGS. 1 and 2, differences will be mainly described.

  This forming apparatus 1 has a grooved unit 3 in which one center grooved portion 7 and three grooved portions 4, 5, 6 are arranged in series, and is placed on both sides in the width direction of the grooved unit 3. Plates 2 and 2 are arranged. The grooving unit 3 is configured to be movable between the mounting plates 2 and 2.

  The center grooving portion 7 is configured by a pair of first center rollers 8a and 8a having circumferential surfaces opposed to each other as illustrated in FIG. The first grooved portion 4 has a pair of second center rollers 8b, 8b whose peripheral surfaces are opposed to each other as illustrated in FIG. 12, and the first grooves are formed on both sides of the pair of second center rollers 8b, 8b. The grooving rollers 4a and 4a are integrally provided, and the first grooving rollers 4a and 4a are also configured to be opposed to the first grooving rollers 4a and 4a that form a pair. As illustrated in FIG. 13, the second grooved portion 5 has the same structure as the first grooved portion 4. The pair of third center rollers 8 c and 8 c and the pair of third center rollers 8 c, Second grooving rollers 5a and 5a are integrally provided on both sides of 8c.

  The third grooved portion 6 has a pair of cutter rollers 16 and 16 whose peripheral surfaces are opposed to each other as illustrated in FIG. 14, and a third grooved roller 6 a is provided on both sides of the pair of cutter rollers 16 and 16. , 6a are integrally provided, and the third grooving rollers 6a, 6a have a structure in which the peripheral surfaces of the third grooving rollers 6a, 6a are opposed to each other.

  The groove width of each groove roller 4a, 5a, 6a is set to B4, B5, B6 as illustrated in FIGS. The groove width B6 of the groove roller 6a is the largest. The groove widths of the second center roller 8b and the third center roller 8c are substantially the same, and the groove width of the first center roller 8a is narrower than these groove widths. The groove widths of the center rollers 8a, 8b, and 8c may also be set in ascending order in series.

  Next, the formation method of the joining end part of the rubber member with a cord of the present invention using this forming device 1 is explained.

  As illustrated in FIGS. 9 and 10, a cord-containing member M in which a plurality of cords S are juxtaposed on an unvulcanized rubber R at a predetermined pitch is positioned on the mounting plates 2 and 2 of the forming apparatus 1 by a positioning guide 10. Place. Here, as illustrated in FIG. 11, a pair of first center rollers 8a and 8a of the center groove portion 7 is sandwiched between the cord S1 and the cord S1 at an arbitrarily set position of the rubber member M with cord from above and below. Put it in a state.

  Between the cords S1 and S1 sandwiched between the first center rollers 8a and 8a of the center groove portion 7, the first groove portion 4 has a pair of second center rollers 8b from above and below as illustrated in FIG. 8b, and between the adjacent cords S1 and S2 between the cords S1 between the pair of first grooving rollers 4a and 4a on both sides of the second center rollers 8b and 8b. . Similarly, in the second grooved portion 5, as illustrated in FIG. 13, the cord S1 and the cord S1 are sandwiched from above and below by a pair of third center rollers 8c and 8c, and adjacent to the cord S1. Between the cord S1 and the cord S2, the pair of second grooving rollers 5a and 5a on both sides of the third center rollers 8c and 8c are sandwiched from above and below.

  Similarly, in the third grooved portion 6, as illustrated in FIG. 14, the cord S1 and the cord S1 are sandwiched from above and below by a pair of cutter rollers 14 and 14, and the adjacent cord S1 and cord between the cord S1 are corded. The space between S2 is sandwiched between the pair of third grooving rollers 6a and 6a on both sides of the cutter rollers 14 and 14 from above and below.

  In the state as described above, the groove unit 3 is moved in the extending direction of the cord S so that the center groove portion 7 is on the leading side, and the center groove portion 7, the first groove portion 4, the second groove The rollers of the attaching portion 5 and the third grooved portion 6 are rolled in the cord extending direction.

  As a result, the first center roller 8a, the second center roller 8b, the third center roller 8c, and the cutter roller 14 are rolled in order between the central cord S1 and the cord S1, and the cutter roller 14 Unvulcanized rubber R between cord S1 is cut. At the same time, the first grooving roller 4a, the second grooving roller 5a, and the third grooving roller 6a roll in a pressed state in order between the cord S1 and the cord S2, and the interval between the cord S1 and the cord S2 is increased. The rubber thickness of the unvulcanized rubber R between the cord S1 and the cord S2 is gradually reduced while being gradually widened.

  In the first grooved portion 4, as illustrated in FIG. 12, since the second center roller 8b rolls between the cord S1 and the cord S1, the unvulcanized rubber R pressed by the first grooved roller 4a There is no narrowing between the code S1 and the code S1. Similarly, in the second grooved portion 5 and the third grooved portion 6, as illustrated in FIGS. 13 and 14, the third center roller 8 c and the cutter roller 14 that roll each other cause the gap between the cord S <b> 1 and the cord S <b> 1. There is no narrowing.

  According to this embodiment, even if there is a variation or deformation of the unvulcanized rubber R caused by the rolling of the grooving rollers 4a, 5a, 6a, the distance between the central cord S1 and the cord S1 is between the cords S1. It is possible to stably form a joining end portion that is held by a roller that rolls and in which the distance between adjacent cords S1 and S2 is gradually increased without variation.

  Further, since the corded rubber member M can be cut simultaneously with the formation of the connecting end J as illustrated in FIG. 15, the work efficiency is improved, and the corded rubber member M used for joining can be manufactured with high productivity. it can. The formation of the joining end portion J and the cutting of the corded rubber member M can be performed at an arbitrary position set by the corded rubber member M.

  In this way, the corded rubber member M in which the connecting end portions J and J are formed at the end portions M1 and M1 in the cord parallel direction overlaps the joining end portions J and J as illustrated in FIG. The crimping unit is set in such a manner that the cord S1 of the joining end J is positioned between the cord S1 and the cord S2 of the other joining end J and wound around the winding drum 11 illustrated in FIG. The overlap part is crimped by 11 or the like. As a result, the joining ends J and J of the corded rubber member M can be joined to each other without a step by placing the cords S1 and S2 in a parallel state with a predetermined pitch.

  The pair of first center rollers 8a, 8a arranged on the leading side in the moving direction of the grooving unit 3 can be omitted, but by providing this, it is possible to suppress shaking of each roller that subsequently rolls, and further Stable grooving can be performed. Moreover, a pair of cutter rollers 14 and 14 can also be arrange | positioned independently, without providing the 3rd groove roller 6a and 6a integrally on both sides.

  In the embodiment, the joining end portions J and J formed at the cord parallel direction ends M1 and M1 of one corded rubber member M are joined to each other. However, in the present invention, separate corded rubbers are used. It is also possible to join the joining ends J, J formed at the cord parallel direction ends M1, M1 of the members M, M, respectively.

It is a partial see-through | perspective side view which illustrates the formation apparatus of the junction end part of this invention. It is a top view of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is sectional drawing which illustrates a joining end part. It is a perspective view which illustrates the joining method of joining edge parts. It is sectional drawing which illustrates the rubber member with a cord joined by the joining method of FIG. It is a partially transparent side view which illustrates another embodiment of the formation apparatus of a junction end part. FIG. 10 is a plan view of FIG. 9. It is DD sectional drawing of FIG. It is EE sectional drawing of FIG. It is FF sectional drawing of FIG. It is GG sectional drawing of FIG. It is sectional drawing which illustrates a joining end part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Formation apparatus of joining edge part 2 Mounting board 3 Grooving unit 4 1st grooved part
4a 1st grooved roller 5 2nd grooved part
5a Second grooved roller 6 Third grooved portion
6a Third grooved roller 7 Center grooved portion 8a First center roller
8b Second center roller 8c Third center roller 9 Slide mechanism 10 Positioning guide 11 Pressure unit 12 Pressure roller 13 Winding drum 14 Cutter roller M Rubber member with code
M1, M2 Cord parallel direction end R Unvulcanized rubber part S, S1, S2 Code J Connection end

Claims (5)

  A method for forming a joining end portion of a corded rubber member in which a cord is placed in a juxtaposed state between end portions in a cord parallel direction of corded rubber members in which a plurality of cords are arranged in parallel at a predetermined pitch, with circumferential surfaces facing each other A plurality of grooving portions composed of a pair of grooving rollers are moved relative to each other in the cord extending direction of the corded rubber member in ascending order of the grooving width of the grooving rollers, and each pair of grooving rollers is moved. , By rolling the corded rubber member in the cord extending direction with the corded rubber member sandwiched in the thickness direction between the cords in the cord parallel direction end portions of the corded rubber member, and joining the cords with the cords gradually widened. A method for forming a joining end portion of a corded rubber member for forming an end portion.   A method for forming a joining end portion of a corded rubber member in which a cord is placed in a juxtaposed state between end portions in a cord parallel direction of corded rubber members in which a plurality of cords are arranged in parallel at a predetermined pitch, with circumferential surfaces facing each other A plurality of grooving portions comprising a pair of center rollers and a pair of grooving rollers facing the circumferential surfaces provided on both sides of the pair of center rollers, in order of increasing the grooving width of the grooving rollers, The pair of center rollers are moved relative to each other in the cord extending direction of the corded rubber member, and the corded rubber member is sandwiched in the thickness direction between the cords of the corded rubber member in the cord extending direction. And a pair of grooved rollers provided on both sides of each of the pair of center rollers are arranged adjacent to each other between the cords on which the pair of center rollers roll. By rolling in the cord extending direction with the rubber member containing the cord sandwiched between the cords in the thickness direction, the gap between the cords is gradually widened to form a joining end, and the peripheral surfaces are made to face each other. A pair of cutter rollers are rolled in the direction of extending the cord with the rubber member containing the cord sandwiched in the thickness direction between the cords in which the respective pair of center rollers are rolled, and the rubber between the cords is cut. A method for forming a joining end of a corded rubber member.   The joining end portions of the corded rubber member having the joining end portion formed by the method for forming the joining end portion of the corded rubber member according to claim 1 or 2 are overlapped, and the cord of one joining end portion is the other A method for joining a corded rubber member that is crimped so as to be positioned between the cords at the joining end of the cord.   A device for forming a joining end of a corded rubber member that joins cords in parallel with each other in the cord parallel direction of corded rubber members in which a plurality of cords are arranged in parallel at a predetermined pitch, with the circumferential surfaces facing each other A plurality of grooving portions including a pair of grooving rollers are arranged in series in ascending order of the grooving width of the grooving rollers, and the corded rubber member is placed with its end in the cord parallel direction protruding. Bonding of corded rubber members provided with a mounting plate and configured so that the plurality of grooved portions arranged in series are relatively movable in the cord extending direction of the corded rubber member mounted on the mounting plate. End forming device.   A device for forming a joining end of a corded rubber member that joins cords in parallel with each other in the cord parallel direction of corded rubber members in which a plurality of cords are arranged in parallel at a predetermined pitch, with the circumferential surfaces facing each other A plurality of grooving portions comprising a pair of center rollers and a pair of grooving rollers provided on both sides of the pair of center rollers facing each other are arranged in series in ascending order of the grooving width of the grooving rollers. In addition, a pair of cutter rollers having circumferential surfaces facing each other are arranged in series with the pair of center rollers on the rear side of the array of the plurality of grooved portions, and the corded rubber member is placed thereon. A mounting plate is provided, and the plurality of grooved portions arranged in series and the pair of cutter rollers are configured to be relatively movable in the cord extending direction of the cord-containing rubber member placed on the mounting plate. Joint end portion of the forming apparatus of the cords rubber member.

Images