JP5025256B2 - Method and apparatus for processing cylindrical rubber member - Google Patents

Description

    The present invention relates to a processing method and apparatus for a cylindrical rubber member for transferring the cylindrical rubber member from a molding drum to a gripping member supported by a conveying means.

As a conventional cylindrical rubber member processing method / apparatus, for example, the one described in Patent Document 1 below is known.
Japanese Patent Laid-Open No. 1-190438 JP 2003-127248 A

  The one described in Patent Document 1 can convey the cylindrical rubber member from the outside and can support the gripping member having an annular shape as a whole, and can form the cylindrical rubber member on the outer periphery. When a molding drum capable of expanding and contracting and a cylindrical rubber member are loosely fitted in the gripping member, the cylindrical member is moved by moving the gripping member radially inward to approach the cylindrical rubber member. Contact and separation means for gripping the rubber member from the outside by the gripping member, and the cylindrical rubber member is transferred from the molding drum to the gripping member by reducing the diameter of the molding drum.

  Here, since the cylindrical rubber member is mostly composed of unvulcanized rubber, when the cylindrical rubber member is transferred from the molding drum to the gripping member as described above, the diameter of the molding drum is simply reduced. In this case, a part of the cylindrical rubber member is kept in close contact with the molding drum due to the adhesive force of the unvulcanized rubber, and the cylindrical rubber member may be deformed or transfer may be uncertain. was there.

  In order to solve such a problem, for example, as described in Patent Document 2, immediately before the cylindrical rubber member is transferred from the molding drum to the gripping member, between the cylindrical rubber member and the molding drum, Compressed air is supplied through the gaps between the arc-shaped segments constituting the molding drum or through a large number of small holes formed in the arc-shaped segments, whereby the cylindrical rubber member is peeled off from the molding drum, and the cylindrical rubber member It has been proposed to take out from the molding drum with high accuracy and efficiency.

    However, in such a conventional cylindrical rubber member processing method / apparatus, the inside of the cylindrical rubber member passes through these gaps and small holes even though the cross-sectional areas of the gaps and small holes are narrow. Since it is necessary to peel off the cylindrical rubber member that is strongly adhered to the molding drum around the gap and the small hole by the compressed air acting on the periphery, the cylindrical rubber member at a portion facing the gap and the small hole Is extruded radially outward and bulges to some extent.

  As a result, a large number of small bumps are formed on the cylindrical rubber member. However, there is a problem in that the arrangement of the reinforcing cords is partially disturbed due to deformation at these bumps. And such a subject is performed by expanding a diameter of a forming drum and a cylindrical rubber member and making it approach a holding member contrary to the thing of the above-mentioned patent documents 1 holding a cylindrical rubber member by a holding member. By doing so, the adhesive force between the cylindrical rubber member and the molding drum becomes stronger, and therefore becomes more remarkable. Moreover, since it is necessary to form a highly accurate space | gap between the arc-shaped segments which comprise a shaping | molding drum, and several small holes in each arc-shaped segment, there also exists a subject that manufacturing cost will become expensive.

  An object of the present invention is to provide a cylindrical rubber member processing method and apparatus capable of transferring a cylindrical rubber member to a gripping member without producing a disturbance of a reinforcing cord while reducing manufacturing costs. .

The purpose of this is as follows. First, the gripping member that is supported by the conveying means and has an annular shape as a whole and the cylindrical rubber member that is loosely fitted in the gripping member and formed on the outer periphery of the molding drum are relatively close to each other. A cylindrical rubber member comprising: a step of gripping the cylindrical rubber member from the outside by the gripping member; and a step of transferring the cylindrical rubber member from the molding drum to the gripping member by reducing the diameter of the molding drum. In the member processing method, when the diameter of the molding drum is reduced, the molding drum is rotated by a minute angle within the range of 3 to 10 degrees around the axis to improve the peelability of the cylindrical rubber member from the molding drum. This can be achieved by the method of treating a cylindrical rubber member.

Secondly, the cylindrical rubber member can be gripped from the outside, and the conveying means for supporting the gripping member having an annular shape as a whole, and the cylindrical rubber member can be formed on the outer periphery, can be rotated, and can be enlarged or reduced in diameter. When the molding drum and the cylindrical rubber member are loosely fitted in the gripping member, the gripping member and the cylindrical rubber member are brought close to each other so that the cylindrical rubber member is gripped from the outside by the gripping member. A cylindrical rubber member processing apparatus comprising: a separating unit, wherein the cylindrical rubber member is transferred from the molding drum to the gripping member by reducing the diameter of the molding drum; It can be achieved by a cylindrical rubber member processing apparatus in which the drum is rotated by a minute angle within the range of 3 to 10 degrees around the axis to improve the peelability of the cylindrical rubber member from the molding drum. Can .

  In this invention, after gripping the cylindrical rubber member from the outside by the gripping member, when the diameter of the molding drum is reduced and the cylindrical rubber member is transferred from the molding drum to the gripping member, the molding drum is rotated by a small angle around the axis. Since the cylindrical rubber member is peeled off from the molding drum from the weakly adhered portion by the circumferential shear force, the peeling is propagated to the surroundings according to the rotation of the molding drum, and the whole is removed from the molding drum. It is easily peeled off and the peelability of the cylindrical rubber member from the molding drum is improved.

  At this time, since the cylindrical rubber member does not undergo special deformation such as a bulge, there is no partial disturbance in the arrangement of the reinforcing cords, and the quality can be easily improved. In addition, since the forming drum generally rotates by receiving a driving force, it is only necessary to rotate the rotation angle by a minute angle, and it is not necessary to form a special gap or small hole, and can be manufactured at low cost. it can.

Furthermore, tackiness even when the high circular cylindrical rubber member, it is possible to mount transfer to reliably separated while suppressing wrinkles. Furthermore, if comprised as described in Claim 2 , a cylindrical rubber member can be reliably peeled from a shaping | molding drum, and can be transferred to a holding member. Moreover, if comprised as described in Claim 3 , a cylindrical rubber member can be reliably peeled from a shaping | molding drum. Furthermore, if it comprises as described in Claim 5 , a structure becomes simple and it can manufacture at low cost.

Embodiment 1 of the present invention will be described below with reference to the drawings.
1 and 2, reference numeral 10 denotes a guide rail extending on the floor surface 11 and extending in the front-rear direction. A plurality of slide bearings 13 fixed to the lower surface of the drive unit 12 are slidable on the guide rail 10. Is engaged. The driving portion 12 supports a base end portion (rear end portion) of a forming drum 14 that extends horizontally toward the front, and the forming drum 14 can be rotated by receiving a driving force from the driving portion 12. Have A screw shaft 16 coaxial with the main shaft 15 is accommodated in the main shaft 15, and the screw shaft 16 can receive a driving force from the drive unit 12 and rotate separately from the main shaft 15.

  Reference numeral 19 denotes a plurality of arc-shaped segments having an arc-shaped cross section, and these arc-shaped segments 19 are arranged outside the main shaft 15 in the circumferential direction. Reference numerals 20 denote disc-shaped guide plates attached to the outer periphery of the front end portion (front end portion) and the outer periphery of the base end portion (rear end portion) of the main shaft 15, respectively. A slider 21 provided on the inner periphery of each arc segment 19 and extending in the radial direction is engaged so as to be movable in the radial direction. The plurality of arc-shaped segments 19 described above as a whole constitutes a drum body 22 that is coaxial with the main shaft 15 and has a cylindrical shape capable of expanding and contracting.

  Reference numeral 23 denotes a plurality of slits formed in the main shaft 15 between the two guide plates 20, and these slits 23 extend in the axial direction and are arranged at equal distances in the circumferential direction. Reference numeral 24 denotes a screwed portion 24a screwed to the screw shaft 16 at the inner end portion, and a cylindrical portion 24b slidably engaged with the outer periphery of the main shaft 15 at the outer end portion. Is a screw body having a connecting portion 24c slidably inserted into the slit 23 at the center, and the screw body 24 is regulated by the slit 23 when the screw shaft 16 rotates. However, it moves in the axial direction of the main shaft 15 by the screw action of the screw shaft 16.

  26 is a plurality of pairs (the same number of pairs as arc segments 19) of parallel links in which the radially inner end is rotatably connected to the cylindrical portion 24b of the screw body 24 and the radially outer end is pivotally connected to the arc segment 19; Each pair of parallel links 26 is spaced apart in the axial direction of the main shaft 15 and is inclined in the same direction with respect to the radial direction. As a result, when the screw body 24 moves in the axial direction, the parallel link 26 swings, the arc segment 19 moves synchronously in the radial direction, and the drum body 22 expands and contracts. The screw shaft 16, guide plate 20, slider 21, screw body 24, and parallel link 26 described above constitute contact / separation means 27 as a whole, and the main shaft 15, drum body 22, and contact / separation means 27 described above as a whole. The molding drum 14 is configured to be capable of expanding and contracting and rotating around a horizontal axis.

  Then, when the molding drum 14 is in a reduced diameter state, the thin drums of unvulcanized rubber extending in the axial direction are supplied to the molding drum 14, and successively shifted while shifting in the circumferential direction by the width of the narrow strips. After the cylindrical inner liner is formed by pasting, a narrow strip extending in the axial direction in which a small number of reinforcing cords are rubber-coated with unvulcanized rubber is supplied to the molding drum 14, and the narrow strip A cylindrical carcass ply is formed by sticking one after another while shifting in the circumferential direction by a distance slightly shorter than the width. In this way, on the outer periphery of the forming drum 14, a cylindrical rubber member 29, which is generally called a carcass band, is formed by the inner liner and the carcass ply. Here, the cylindrical rubber member may be a band composed of only the inner liner or only the carcass ply.

  In addition, the cylindrical rubber member described above is formed by supplying and winding a sheet body made of unvulcanized rubber around a molding drum and joining the start and end of the inner liner to form an inner liner, and then a large number parallel to the axis of the molding drum. It may be configured by forming a carcass ply by feeding and winding a sheet body coated with a reinforcing cord of a book around a forming drum and joining the start and end of each sheet, or one or three sheet bodies You may comprise by winding-laminating above.

  31 is a conveying means installed in front of the forming drum 14, and this conveying means 31 is a horizontal rectangular plate-like shape having a plurality of slide bearings 32 slidably engaged with the guide rail 10 fixed to the lower surface. A base 33 is provided. Further, a gripping member, which will be described later, to which a cylindrical rubber member 29 is transferred from the molding drum 14 at the transfer position U is supported by the transport means 31. The base 33 of the transport means 31 is connected to the front end (rear end) of the piston rod 35 of the cylinder 34 extending in parallel with the guide rail 10, and as a result, when the cylinder 34 is operated, the transport means 31 is connected to the guide rail 10. It can move in the front-rear direction while being guided.

  A drive unit 37 is installed on the floor surface 11 in front of the transfer position U, and the drive unit 37 has a base end portion (front end portion) of a forming drum 38 that can extend and contract horizontally extending rearward. It is supported. Here, the molding drum 38 is coaxial with the molding drum 14 and can be rotated around the axis line by receiving a driving force from the driving unit 37. When the conveying means 31 moves to the delivery position M surrounding the molding drum 38 from the outside, the cylindrical rubber member 29 is delivered from the conveying means 31 to the molding drum 38.

  1, 2, and 3, ring bodies 40, 41 having the same shape whose central axis is coaxial with the forming drums 14, 38 are respectively fixed to the upper surfaces of the front and rear end portions of the base 33. , 41 is formed with a storage groove 42 having a rectangular cross section extending in the circumferential direction. A plurality of pairs of guide rails 43 extending in the radial direction are laid on the inner surfaces of the ring bodies 40, 41 facing each other, and the pair of guide rails 43 are arranged at equal angles in the circumferential direction.

  45 is a plurality of sliders arranged close to the inside of the ring bodies 40 and 41, here, the number of sliders equal to the number of pairs of guide rails 43. Each slider 45 can slide on the corresponding guide rail 43 on the outer surface. A slide bearing 46 is fixed to be engaged. As a result, like the guide rail 43, a plurality of the sliders 45 are arranged at equal angular intervals in the circumferential direction, and can move in the radial direction while being guided by the guide rails 43.

  Reference numeral 47 denotes an arcuate adsorbing body fixed to the inner end of the slider 45 in the radial direction. These adsorbing bodies 47 are made of magnets, for example. A ring-shaped rotating ring 48 is rotatably stored in each of the storage grooves 42 of the ring bodies 40 and 41, and the rotating rings 48 have inclined slits 49 penetrating the same in the radial direction. Are formed at the same distance in the circumferential direction, and the same number as the slider 45 is formed here.

  The ring bodies 40, 41 are formed with a plurality of radial slits 51 extending in the radial direction and intersecting with the inclined slits 49, here the same number as the inclined slits 49, and these radial slits 51 are spaced equidistantly in the circumferential direction. At the same time, they are arranged between the paired guide rails 43, respectively. A plurality of pins 52 are inserted into the inclined slits 49 and the radiation slits 51 at the intersecting positions, here, the same number of pins as the sliders 45, and the inner ends of these pins 52 are fixed to the sliders 45.

  As a result, the slider 45 is always located on the same circle centered on the central axis of the ring bodies 40 and 41, and is synchronized with the pin 52 while being regulated by the inclined slit 49 and the radiation slit 51 when the rotating ring 48 rotates. And move the same distance in the radial direction. A bracket 54 is integrally formed on the outer periphery of the rotating ring 48, and a base end portion of a screw case 55 extending in a substantially tangential direction is connected to the bracket 54 so as to be swingable. The screw case 55 is formed with a screw hole 56 extending from the distal end surface toward the proximal end, and the screw shaft 57 is screwed into the distal end side of the screw shaft 57.

  58 are brackets fixed to the outer peripheries of the ring bodies 40 and 41, and a motor 60 in which an output shaft 59 is connected to the base end of the screw shaft 57 is swingably supported by these brackets 58. . As a result, when the motor 60 is operated to rotate the output shaft 59 and the screw shaft 57 and the rotating ring 48 is rotated with respect to the ring bodies 40 and 41, the slider 45 and the adsorbing body 47 become the inclined slit 49 and the radiation slit. Synchronize with 51 and move in the radial direction by equal distance.

  The rotating ring 48, the pin 52, the screw case 55, the screw shaft 57, and the motor 60 described above constitute a synchronous movement mechanism 61 that moves the slider 45 and the adsorbing body 47 in the radial direction in synchronization. The sliders 45 may be connected to each other by a link mechanism that is operated by a cylinder, and the sliders 45 may be synchronized and moved by an equal distance in the radial direction by these link mechanisms. Further, the base 33, the ring bodies 40 and 41, the slider 45, the adsorbing body 47, and the synchronous movement mechanism 61 described above constitute the conveying means 31 as a whole.

  64 is a bead as a gripping member that forms a ring as a whole and forms a pair. Here, the pair of beads 64 are magnetically separated from each other in the axial direction with respect to the conveying means 31, more specifically, the adsorbing body 47. Is supported by adsorption. When the bead 64 is attracted and held by the adsorbing body 47 in this way, the inner periphery of the bead 64 protrudes radially inward from the inner periphery of the slider 45 and the adsorbing body 47. In addition, the inner ends in the radial direction of the substantially bowl-shaped filler 65 are respectively crimped to the pair of beads 64. Then, if the gripping members are paired apart in the axial direction in this way, and if composed of a pair of beads 64 here, it is not necessary to install a special gripping member other than the beads 64 in the transport means 31, and the structure can be simplified. And can be manufactured at low cost.

  Reference numeral 68 denotes a cylinder as a moving means extending in parallel with the guide rail 10, and the drive unit 12 is connected to the tip (front end) of the piston rod 69 of the cylinder 68. As a result, when the cylinder 68 is activated, the drive unit 12 and the forming drum 14 can move in the front-rear direction while being guided by the guide rail 10. Then, the molding drum 14 and the drive unit 12 having the cylindrical rubber member 29 formed on the outer periphery approach the conveying means 31 when the cylinder 68 operates and the piston rod 69 protrudes, and the cylindrical rubber member 29 moves. It is loosely fitted into the conveying means 31 and the bead 64 stopped at the loading position U.

  At this time, when the diameter of the drum body 22 of the molding drum 14 is increased by the contact / separation means 27, the cylindrical rubber member 29 approaches the bead 64 while expanding the diameter, and the outer periphery of the cylindrical rubber member 29 is within the bead 64. The cylindrical rubber member 29 is pressed from the periphery and is crimped, so that the cylindrical rubber member 29 is gripped from the outside only by the adhesion force at two locations separated by the bead 64 in the axial direction.

  In the present invention, the gripping member is supported by the slider 45, and is composed of a plurality of arc-shaped segments whose inner periphery is a mirror surface, or a plurality of arc-shaped segments composed of magnets. You may comprise from this suction pad. In this case, the arcuate segments and the suction pads are arranged side by side in the circumferential direction, so that the gripping member has an annular shape as a whole.

  When the gripping member is composed of a plurality of gripping segments and suction pads as described above, the gripping member and the suction pad are synchronously moved radially inward by the contacting / separating means, so that the gripping member is cylindrical rubber member 29. You may make it approach. In short, when the cylindrical rubber member is loosely fitted in the gripping member, the contacting / separating means for gripping the cylindrical rubber member from the outside by the gripping member by relatively approaching the gripping member and the cylindrical rubber member. What is necessary is just to provide.

  Thereafter, when the diameter of the molding drum 14 is reduced by the contact / separation means 27, the cylindrical rubber member 29 is peeled off from the molding drum 14 and transferred to a bead 64 supported by the conveying means 31. Here, when the diameter of the molding drum 14 is reduced and the cylindrical rubber member 29 is peeled off from the molding drum 14 as described above, the inner circumference of the cylindrical rubber member 29 that is in close contact with the molding drum 14 is unvulcanized. Since the cylindrical rubber member 29 is expanded (stretched in the circumferential direction) when the diameter is increased once before the diameter reduction of the molding drum 14 as described above, the cylindrical rubber is made of rubber. The member 29 is strongly adhered to the outer periphery of the forming drum 14 due to its adhesive force and cannot be easily peeled off. For this reason, in this embodiment, when the diameter of the forming drum 14 is reduced, the forming drum 14 is rotated by a minute angle around the axis.

  As a result, a circumferential shearing force based on the rotation of a minute angle is generated between the cylindrical rubber member 29 held by the bead 64 and the molding drum 14, and the cylindrical rubber member 29 is molded from a portion having a weak adhesion force. Then, the peeling is propagated to the surroundings as the molding drum 14 rotates, and the entire cylindrical rubber member 29 is easily peeled off from the molding drum 14, and the cylindrical rubber member 29 from the molding drum 14 is peeled off. The peelability is improved.

  At this time, since the cylindrical rubber member 29 does not undergo any special deformation unlike the bumps of the prior art, there is no occurrence of partial disturbance in the reinforcing cord arrangement in the carcass ply, and the quality can be easily improved. Can be improved. Moreover, in general, the forming drum 14 rotates by receiving a driving force from the driving unit 12, and therefore, it is only necessary to rotate the microscopic angle by using the rotation from the driving unit 12 as it is, and it is not necessary to form a special gap or small hole. Therefore, it can be manufactured at low cost.

Here, very small angle to the forming drum 14 is rotated you in the range of 3 to 10 degrees. The reason is that if the minute angle is less than 3 degrees, the circumferential shearing force generated between the cylindrical rubber member 29 and the molding drum 14 is weak, and the cylindrical rubber member 29 is not sufficiently peeled from the molding drum 14. On the other hand, if it exceeds 10 degrees, if the tackiness of the cylindrical rubber member 29 is high, the cylindrical rubber member 29 may be dragged by the molding drum 14 to cause wrinkles in the cylindrical rubber member 29. However, if the minute angle is within the above-described range, the cylindrical rubber member 29 can be reliably peeled off from the molding drum 14 and transferred to the bead 64 while suppressing wrinkles.

  Further, although the minute rotation of the forming drum 14 described above may be performed only in the normal direction (rotation in one direction), it is preferable that the forming drum 14 is rotated in the normal rotation direction and the reverse rotation direction by a minute angle alternately. The reason for this is that when rotating alternately forward and reverse as described above, a circumferential shearing force in the reverse direction is repeatedly applied between the cylindrical rubber member 29 and the molding drum 14, and the cylindrical rubber member 29 is moved to the molding drum 14. This is because it can be reliably peeled off and transferred to the bead 64.

  Furthermore, when the angle of minute rotation of the molding drum 14 described above is increased as time elapses, the peeling of the cylindrical rubber member 29 from the molding drum 14 can be smoothly and gradually spread over a wide range. This is preferable because the rubber member 29 can be reliably peeled off from the molding drum 14. Here, the aforementioned rotation angle may be continuously increased or may be increased stepwise. In this embodiment, the rotation angle is first rotated several times in the first 3 degrees and then 5 to 10 degrees. The rotation angle is increased until it is rotated forward and backward several times.

  The timing of the minute angle rotation and the diameter reduction of the molding drum 14 is the same as the timing of the minute angle rotation of the molding drum 14 including the start of the minute angle rotation of the molding drum 14 and the start of the diameter reduction of the molding drum 14. The diameter reduction of the forming drum 14 may be started at the end, after the forming drum 14 is rotated by a small angle several times, that is, the diameter reduction of the forming drum 14 may be started in the middle of the minute angle rotation. From the viewpoint of reliability and certainty, the last timing is good.

Next, the operation of the first embodiment will be described.
When the reduced-diameter molding drum 14 is driven and rotated by the drive unit 12, a thin cord of unvulcanized rubber is stuck on the molding drum 14 one after another to form an inner liner, and then a reinforcement cord is embedded. When the carcass ply is formed by sticking the narrow pieces on the inner liner one after another, a cylindrical rubber member 29 composed of the inner liner and the carcass ply is formed on the outer periphery of the forming drum 14. At this time, the conveying means 31 is stopped at the transfer position U, and the beads 64 with fillers 65 are held by suction on the pair of adsorbers 47, respectively.

  Then, when the cylindrical rubber member 29 is molded on the outer periphery of the molding drum 14 as described above, the driving unit 12 and the molding drum 14 are moved forward by the cylinder 68 to approach the conveying means 31, and the molding drum 14, The cylindrical rubber member 29 is loosely fitted in the pair of beads 64. In the present invention, the cylindrical rubber member 29 may be loosely fitted in the bead 64 by moving the conveying means 31 rearward. Thereafter, when the diameter of the forming drum 14 is increased by the contact / separation means 27 and the cylindrical rubber member 29 approaches the bead 64, the outer periphery of the cylindrical rubber member 29 is pressed against the inner periphery of the bead 64 to be crimped. The cylindrical rubber member 29 is gripped by the bead 64 from the outside only by the adhesive force. Thereafter, the forming drum 14 is reduced in diameter by the contact / separation means 27. At this time, the forming drum 14 is rotated by a minute angle around the axis.

  As a result, a circumferential shearing force based on the rotation of a minute angle is generated between the cylindrical rubber member 29 held by the bead 64 and the molding drum 14, and the cylindrical rubber member 29 is molded from a portion having a weak adhesion force. After peeling off from the drum 14, the peeling propagates to the surroundings as the molding drum 14 rotates, and the entire cylindrical rubber member 29 is easily peeled off from the molding drum 14. When the cylindrical rubber member 29 is peeled from the molding drum 14 in this way, the cylindrical rubber member 29 is transferred from the molding drum 14 to the bead 64 supported by the conveying means 31.

  Next, the drive unit 12 and the forming drum 14 move rearward and return to the initial positions. At this time, the cylindrical rubber member 29 gripped from the outside by the bead 64 is fitted to the outside of the reduced-diameter molding drum 38 by the conveyance means 31 moving forward to the delivery position M by the operation of the cylinder 34. Is done. In the present invention, the conveying means 31 may be stationary and the forming drum 38 may move rearward to the transfer position U.

  Next, the diameter of the bead lock portion of the forming drum 38 provided at a position overlapping with the bead 64 is increased, and the bead lock portion results in the cylindrical rubber member interposed therebetween. 29 is gripped from the inside in the radial direction. Next, when the output shaft 59 and the screw shaft 57 are rotated by the operation of the motor 60 and the rotating ring 48 is rotated clockwise in FIG. 2, the slider 45 and the adsorbing body 47 are synchronized with each other at an equal distance outward in the radial direction. The adsorbent 47 moves away from the cylindrical rubber member 29 and the bead 64. Thereafter, the conveying means 31 moves rearward and returns to the transfer position U, and the slider 45 and the like move radially inward by the operation of the motor 60 to return to the initial position.

  At this time, in the molding drum 38, the bead lock portion and the bead 64 move so as to approach each other, and the molding drum 38 between these bead lock portions expands in diameter, so that the cylindrical rubber member 29 between the beads 64 is formed. As shown by the phantom line in FIG. 1, the cylindrical rubber member 29 on the outer side in the axial direction from the bead 64 is folded around the bead 64 by a blade, a bladder, or the like.

  Thereafter, a belt layer is formed by sticking one after another while shifting the narrow strips in which a small number of reinforcing cords are embedded outside the cylindrical rubber member 29 in the circumferential direction, and a ribbon made of unvulcanized rubber is spirally formed. A green tire is manufactured by forming a side tread and a top tread by winding many times in a spiral. Here, when the size (diameter) of the cylindrical rubber member 29 and the bead 64 is changed, the motor 60 is operated to rotate the rotating ring 48, and the slider 45 and the adsorbing body 47 are moved to the cylindrical rubber member 29. And move to a radial position corresponding to the size of the bead 64.

  The present invention can be applied to the industrial field in which a cylindrical rubber member is transferred from a molding drum to a gripping member supported by a conveying means.

It is a partially broken schematic front view showing Embodiment 1 of the present invention. It is II sectional view taken on the line of FIG. It is II-II arrow sectional drawing of FIG.

14 ... Forming drum 27 ... Contact / separation means
29 ... cylindrical rubber member 31 ... conveying means
64… Gripping member (bead)

Claims (5)

The cylindrical rubber member is gripped by relatively approaching the gripping member that is supported by the conveying means and has an annular shape as a whole, and the cylindrical rubber member that is loosely fitted in the gripping member and formed on the outer periphery of the molding drum. In a processing method of a cylindrical rubber member, comprising: a step of gripping from the outside by a member; and a step of transferring the cylindrical rubber member from the molding drum to the gripping member by reducing the diameter of the molding drum. When reducing the diameter, the forming drum is rotated by a minute angle within the range of 3 to 10 degrees around the axis to improve the peelability of the cylindrical rubber member from the forming drum. A method for treating a rubber member. Processing method according to claim 1 Symbol placement of the cylindrical rubber member to be rotated by a small angle alternately the forming drum in the forward and reverse directions. Processing method of a cylindrical rubber member according to claim 1 or 2, so as to increase the angle of the rotation in accordance with the lapse of time. A conveying means for supporting the holding member that can hold the cylindrical rubber member from the outside and that has an annular shape as a whole, a forming drum that can form the cylindrical rubber member on the outer periphery, can rotate, and can expand and contract, When the cylindrical rubber member is loosely fitted in the gripping member, contact / separation means for gripping the cylindrical rubber member from the outside by the gripping member by relatively approaching the gripping member and the cylindrical rubber member. And a cylindrical rubber member processing apparatus configured to transfer the cylindrical rubber member from the molding drum to the gripping member by reducing the diameter of the molding drum. A processing apparatus for a cylindrical rubber member, wherein the cylindrical rubber member is rotated around a minute angle within a range of 3 to 10 degrees to improve the peelability of the cylindrical rubber member from the molding drum. 5. The processing apparatus for a cylindrical rubber member according to claim 4, wherein the gripping members are a pair of beads separated in the axial direction.

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