WO2008010293A1 - Method and device for producing tire bead - Google Patents
Method and device for producing tire bead Download PDFInfo
- Publication number
- WO2008010293A1 WO2008010293A1 PCT/JP2006/314473 JP2006314473W WO2008010293A1 WO 2008010293 A1 WO2008010293 A1 WO 2008010293A1 JP 2006314473 W JP2006314473 W JP 2006314473W WO 2008010293 A1 WO2008010293 A1 WO 2008010293A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filler rubber
- bead core
- end portion
- bead
- peripheral surface
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
- B29D2030/482—Applying fillers or apexes to bead cores
Definitions
- the present invention relates to a method and an apparatus for manufacturing a bead for a tire in which a filler rubber is bonded to the outer peripheral surface of a bead core.
- a tire is formed by combining a plurality of rubber members and a plurality of reinforcing members mainly composed of steel or synthetic fiber cords.
- a bead portion is formed as an assembling portion.
- a belt-like rubber called a bead filler having a triangular cross section (mainly a vertical triangular shape in cross section) on the radially outer peripheral surface of a bead core formed mainly by winding a steel wire in a circular ring shape.
- a tire bead configured with a member hereinafter referred to as filler rubber in the present invention is embedded.
- the tire bead B is manufactured by attaching a filler rubber F extruded in a triangular cross section to the outer peripheral surface of a ring-shaped bead core C as shown in FIG. Since the filler rubber F having a triangular cross section is extruded in a long shape, it is affixed to the outer peripheral surface of the bead core C and is substantially equivalent to one circumference of the outer periphery of the bead core C. In general, it is cut into two pieces, and the cut end and back end are jointed.
- the filler rubber F extruded with a triangular cross section having a radial width is applied to the outer peripheral surface of the ring-shaped bead core C.
- the tip F1 tends to be inclined with respect to the outer peripheral surface of the core (dashed line in the figure).
- Patent Document 1 a long filler rubber extruded into a triangular cross section is supplied onto a former having a tapered inclined outer peripheral surface, and a rear end portion cut to a predetermined length is provided.
- Patent Documents 2 and 3 when rotating the bead core, a filler rubber having a triangular cross-section is supplied in a lying state and attached to the outer peripheral surface of the bead core and rotated at a predetermined angle.
- the filler rubber is cut to a predetermined length, the start end and the end are moved onto the fixing plate, the bead core is reversed with the tip pressed against the fixing plate, and the filler rubber is It is disclosed that the start end side is stretched and the start end portion and the end end portion are jointed.
- the filler rubber is stuck to the bead core in the sideways state and the ends are jointed. Therefore, after the sticking, the filler rubber in the sideways state is erected in the radial direction. It is not easy to do this, and there is a risk that it may become an obstacle to transportation to the tire molding process and tire molding. Also, since the starting force and the peripheral end are overlapped and joined, the weight balance may be impaired.
- Patent Document 1 Japanese Patent Laid-Open No. 6-297603
- Patent Document 2 Japanese Patent Laid-Open No. 8-142227
- Patent Document 3 Japanese Patent Laid-Open No. 2003-127249 Disclosure of the invention
- the present invention provides a filler rubber having a triangular cross-section in an upright posture with respect to the outer peripheral surface of the bead core in the manufacture of tire beads.
- the end surfaces of the cut front end and rear end can be securely abutted and joined without causing cracks.
- the present invention provides a tire bead manufacturing method and a manufacturing apparatus that can be improved.
- the present invention that solves the above problems is a method for manufacturing a tire bead, in which a filler rubber extruded in a triangular cross-section is attached to the outer peripheral surface of a ring-shaped bead core in a standing posture.
- the filler rubber is held in a standing posture on the outer peripheral surface of the ring-shaped bead core supported by the rotating support, and is wound around the rotation of the bead core, and corresponds to one circumference of the core outer periphery.
- the front end and the rear end of the filler rubber cut to a predetermined length are joined, the front end and the rear end are respectively clamped by the first and second clamping means.
- the front end portion and the rear end portion of the filler rubber are made to face each other on the outer peripheral surface of the bead core and at least one clamping means is displaced from the facing state to the other side. Butt end faces It was a feature that the joints. As a result, the end surfaces of the filler rubber wound in a standing posture on the outer peripheral surface of the bead core can be reliably jointed by abutment while maintaining the standing posture. .
- the first sandwiching means for sandwiching the vicinity of the front end portion of the filler rubber includes a front end portion of the filler rubber that is inclined rearward in the rotation direction by being wound around the outer peripheral surface of the bead core. Is moved in the direction corresponding to the inclination, and the front end is opposed to the rear end with a gap on the outer edge side, and is displaced to the other side so as to extend largely toward the outer edge side of the filler rubber, The end surfaces of the front end portion and the rear end portion of the filler rubber are abutted against each other. As a result, the unloading force that causes cracks on the outer edge side of the joint due to the abutment between the front end and the rear end is also excessively heavy. The joint can be reliably made without causing excessive protrusion of rubber.
- the present invention is a method for manufacturing a bead for a tire, in which filler rubber extruded in a triangular cross section on an outer peripheral surface of a ring-shaped bead core is attached in a standing posture, and the bead core is rotated.
- the filler rubber supplied in a long length is sent in a standing posture in a tangential direction with respect to the reference position for starting attachment on the outer peripheral surface of the bead core, and While wrapping around the bead core by the rotating support, both sides of the base of the filler rubber are pressed by the pressure roller and attached to the outer peripheral surface of the bead core, and the tip end of the filler rubber is less than one reference position force
- a predetermined rotational angle position is reached, the rotation by the rotary support is stopped and the vicinity of the tip is clamped by the first clamping means.
- the vicinity of the rear end portion of the filler rubber having a length corresponding to one circumference of the outer circumference of the bead core is clamped by a second clamping means, and is cut to the length corresponding to the one circumference, and the cut rear end portion Is moved to a position facing the tip portion of the outer periphery of the bead core by the second clamping means, and at least one clamping means is displaced to the other side from this opposed state, thereby leading the tip of the filler rubber.
- the end surfaces of the rear part and the rear part are brought into contact with each other and are jointed.
- the filler rubber having a triangular cross-section can be supplied in a standing posture with respect to the outer peripheral surface of the bead core, and can be pasted while being wound. Can be jointed.
- the first clamping means for clamping the vicinity of the tip end portion of the filler rubber is the filler rubber that is inclined rearward in the rotational direction by winding around the outer peripheral surface of the bead core.
- the front end portion is clamped in a direction corresponding to the inclination, and the front end portion is displaced from the rear end portion and the outer edge side with a gap to the other side so as to extend largely toward the outer edge side of the filler rubber.
- the end surfaces of the front end portion and the rear end portion of the filler rubber are preferably abutted against each other.
- the tip of the filler rubber reaches a rotation angle position of 270 ° or more from the reference position less than one round, the rotation by the rotation support is stopped, and the filler rubber It is preferable that the vicinity of the front end is clamped by the first clamping means. As a result, the entire circumference of the filler rubber can be affixed, and the end faces can be joined together by butting.
- the bead core may be a core body formed by winding a steel wire a plurality of times and having a fiber sheet wrapped around it.
- the present invention provides a manufacturing apparatus used for carrying out the method for manufacturing a tire bead as described above, in which the ring-shaped bead core supplied one by one is supported from its inner periphery and rotated.
- the support rubber and the filler rubber that is extruded in a triangular cross section and supplied in a long shape are in a tangential posture in a tangential direction with respect to the reference position of the start of application on the outer peripheral surface of the bead core supported by the rotary support
- a pair of pressure-bonding rolls for pressing and adhering both sides of the base of the filler rubber to be fed to the outer peripheral surface of the bead core in accordance with the rotation by the rotating support member at the reference position of the outer peripheral surface of the bead core
- the first clamping means for clamping the vicinity of the tip of the filler rubber affixed
- the second clamping means can be moved to a position where the rear end portion faces the front end portion of the outer periphery of the bead core in a state where the vicinity of the rear end portion of the cut filler rubber is clamped. At least one of the first clamping means and the second clamping means can be displaced from the position in the facing state to the other side, and by this displacement action, It is characterized in that it is provided so that the end surfaces of the front end portion and the rear end portion of the filler rubber are brought into contact with each other.
- the bead core is rotated while being supported by the rotating support, and the long-section triangular filler rubber is held in a standing posture on the outer peripheral surface of the bead core and attached.
- the front end portion and the rear end portion can be reliably butted and joined.
- the first clamping means for clamping the vicinity of the front end portion of the filler rubber corresponds to the inclination of the front end portion of the filler rubber that is inclined rearward in the rotational direction by winding around the outer peripheral surface of the bead core.
- it is provided on the other side so as to be able to rotate and displace so that the outer edge side of the filler rubber extends toward the outer edge side around the fulcrum shaft near the inner periphery of the bead core.
- the joint can be reliably joined without causing cracks on the outer edge side of the joint portion.
- the manufacturing apparatus includes a sensor that detects when the front end of the filler rubber reaches a predetermined rotation angle position less than one turn from the reference position, and the front end by the sensor is provided with the sensor.
- the rotation support body is configured to stop the rotation based on the detection signal of the part.
- the first clamping means for clamping the vicinity of the tip end portion of the filler rubber is at a rotational angle position of 270 ° or more less than one turn from the reference position, and when the rotation of the rotary support is stopped, It is preferable to perform a clamping operation so as to clamp the vicinity of the tip of the filler rubber.
- the cut rear end portion of the filler rubber is transferred to the opposite position to the front end portion, and is made to face. They can be joined together, and filler rubber can be applied efficiently.
- a pair of pinching rollers that pinch the filler rubber including the joint portion by the butting from both sides is provided on the slightly forward side in the rotational direction from the pressure-bonding roller at the reference position.
- the entire filler rubber can be shaped while being held in a standing posture with respect to the outer peripheral surface of the bead core, and the rubber that protrudes outward by abutment between the end surfaces of the front end portion and the rear end portion is pinched to a predetermined shape. Can be shaped.
- the filler rubber extruded with a triangular cross section is held in a standing posture on the outer peripheral surface of the bead core.
- the end surfaces of the attached front end and the rear end can be reliably abutted and joined.
- the bead manufactured in this way is free from cracks in the joint part due to the abutment during handling until it is used for tire molding. This also improves the manufacturing efficiency of the tire bead.
- FIG. 1 is a schematic front view of a bead manufacturing apparatus of the present invention
- FIG. 2 is a schematic plan view of the same.
- FIG. 3 is a schematic front view of the pasting device section centered on the rotating support
- FIG. 4 is a longitudinal sectional view of the rotating support
- Fig. 5 is a front view from the side of the feeding device part of the filler rubber
- Fig. 6 is a plan view of the feeding device part
- Figs. 7 and 8 are VII-VII line and VIII in Fig. 6, respectively.
- FIG. 9 is a side view of the pressure roller portion
- FIG. FIG. 11 is a front view showing a support state of the first clamping means and the second clamping means
- FIG. 12 is a side view of the first clamping means
- FIG. 13 is a plan view of the same
- FIG. 15 is a side view of the clamping means
- FIG. 15 is a plan view of the same
- FIG. 16 is an explanatory view of a joint state by abutment of filler rubber.
- FIG. 17 is a side view of the pinching roll portion
- FIG. 18 is a partial plan view of the same.
- reference numeral 1 denotes a filler rubber F sticking device portion in a bead manufacturing device A according to the present invention
- 2 denotes a ring-shaped bead core C supply portion
- 3 denotes a filler rubber F supply portion. It is.
- the bead core C is formed by winding a steel wire in a ring shape and is mainly rectangular in cross section.
- the bead core C may be a bead core C in which a thin fiber sheet S such as a mesh is covered on the surface of the laminate of the wires W.
- the bead cores C are locked and conveyed one by one by the appropriate conveying means 4 from the supply unit 2, and are supplied to the rotating support 10 described later of the pasting device unit 1. Therefore, the conveying means 4 is fed from the supply unit 2 to the bead.
- Each core C is received one by one, and the received one bead core C is transferred to the front of the rotary support and delivered to the rotary support 10.
- the filler rubber F has a strip shape with a triangular cross section corresponding to a bead to be manufactured, in particular, a vertically long triangular shape, and is usually continuously extruded from an extruder 5 provided in the supply unit 3. Then, it is supplied to the portion of the feeding device 20 to the sticking device 1 through the festoon device 6 and the traveling guide portion 7 having a plurality of guide rollers. In particular, the filler rubber F pushed out in a sideways state is supplied in a substantially upright posture in the feeding device 20 portion as the posture gradually changes in the traveling guide portion 7.
- the rotary support 10 provided in the sticking device unit 1 supports the ring-shaped bead core C, which is supplied one by one by the transport means 4, in accordance with the sticking cycle of the filler rubber F. Is.
- the rotary support 10 has the following configuration.
- the rotating support 10 is provided with a mounting plate 12 formed by dividing a donut-shaped disk into four parts around a hollow rotating shaft 11, and an arc-shaped supporting portion is provided along the outer periphery of each mounting plate 12. 13 is installed, and a U-shaped groove 13a is formed on the outer surface of the support portion 13 to fit the inner peripheral side of the bead core C. The inner peripheral side of the bead core is connected to the groove 13a. It can be supported from the inside in a mated state.
- Each of the mounting plates 12 has a radial direction relative to the radial guide member 1 lb of the front surface of the flange-shaped mounting plate 1 la that the guide portion 12 a on the back surface of the mounting plate 12 has on the front end portion of the rotating shaft 11.
- the link member 15 is connected to an expansion / contraction operation shaft 14 that is supported so as not to be slidably engaged with and disengaged from the inner shaft of the rotary shaft 11 and slidably penetrated in the axial direction.
- Reference numeral 16 denotes a cylinder device for moving the operating shaft 14 back and forth
- 17 denotes a driving motor connected to the rotating shaft 11 by a rotation transmission means 18 such as a belt. Now you can rotate 10!
- the support frame 19 that rotatably supports the rotary support 10 is a cylinder device or the like. It is provided so as to be able to move up and down with respect to the apparatus frame 8 by means of advancing / retreating means or a lifting means such as a jack (not shown). The height can be adjusted according to the bead diameter.
- the drive motor 17 is attached to and supported by a support frame 19 of the rotary support 10.
- the filler rubber F feeding device 20 has a support frame 21 with respect to a frame 9 arranged in parallel to the filler rubber F feeding direction. It is movably engaged and supported via a linear guide portion 22 extending in the longitudinal direction (feed direction), and has the following configuration.
- a feed base 23 on which the filler rubber F supplied in a standing posture through the travel guide portion 7 can be mounted so as to be able to feed in the feed direction.
- the feed base 23 has an interval at which the filler rubber F can pass through the upper surface of the plate-like frame 23a, and guide plates 24, 24 are erected on both sides of the passage portion. 24, an endless belt 23b that slides on the plate-like frame 23a and rotates in the feeding direction is arranged so that the filler rubber F can be sent out at a constant speed by the rotation of the belt 23b. It is provided.
- the feed base 23 is engaged and connected to the support frame 21 via a linear guide portion 25 and a rack mechanism portion 26 that extend in the moving direction, and is supported so as to be kept horizontal. It is provided to move with the frame 21.
- a pair of sandwiching members 27, 27 are provided that can sandwich both sides of the filler rubber F through the longitudinally extending slotted windows 24a, 24a of the guide plates 24, 24. .
- the clamping members 27, 27 are attached to and supported by a bracket 29 via an air chuck mechanism 28, and are clamped when necessary, such as when the filler rubber is cut or the tip is fed by the operation of the air chuck mechanism 28. It is provided to work.
- the bracket 29 is supported by being connected to the support frame 21 through a linear guide portion 30 so as to be movable.
- Reference numeral 31 denotes a cylinder device attached to the frame 9 and connected to the support frame 21.
- the entire feeding device 20 on the support frame 21 is moved in the feeding direction of the filler rubber F.
- 32 is a cylinder device attached to the support frame 21 and connected to the bracket 29, the cylinder device By the operation of 32, the bracket 29 that supports the holding members 27, 27 moves forward and backward in the feeding direction with respect to the support frame 21.
- Reference numeral 33 denotes a drive transmission shaft for the belt 23b, and the transmission shaft 33 is connected to a drive motor 37 via a timing belt 36 suspended from timing pulleys 34 and 35.
- a pressing means 39 is provided for sandwiching the timing belt 36 between the support frame 21 and the bracket 29 when the support frame 21 and the bracket 29 are moved, whereby the movement of the support frame 21 and the bracket 29 is performed. It is provided so as to match the timing of the belt 23b with the timing of the belt 23b.
- the filler rubber F sandwiched between the guide plates 24 and 24 on the feed base 23 by the sandwiching members 27 and 27 The front end portion F1 is set to the reference position Pl for starting the attachment on the outer peripheral surface of the bead core C supported by the rotary support 10, in the case of the figure, set at the top of the bead core C supported as described above. It is configured to feed to the reference position P1.
- the entire support frame 21 and the holding members 27 and 27 are moved forward by moving the support frame 21, and then the bracket 29 is further moved forward from the support frame 21 to move the holding member 27.
- the tip end F1 of the filler rubber F sandwiched between the sandwiching members 27 and 27 is set to be fed to a reference position P1 on the outer periphery of the bead core C on the rotating support 10. Yes.
- the clamping operation of the clamping members 27 and 27 is released and the original position is restored.
- a pressure roller unit 40 having a pair of pressure rollers 40a and 40b that can be moved up and down and pressed against the outer peripheral surface of the bead core C in accordance with the rotation of the bead core C.
- the pressure-bonding rollers 40a and 40b sandwich the filler rubber F in the front-rear direction when viewed from the front side of the rotary support 10, respectively.
- the holding members 27, 27 in a state where they have been inserted are spaced from each other and the support 10 of the rotary support 10 is supported.
- the lower end of the holding portion 13 facing the bead core C is inclined so that the interval is narrower and is rotatably supported by the mounting members 42 and 42.
- the mounting members 42 and 42 are attached to support members 44 and 44 that can adjust the interval by rotating the screw shaft 43 so that the angle can be adjusted, and the inclination angle and interval of the roller plates 41 and 41 can be adjusted. It is supported by.
- Reference numeral 46 denotes a linear guide portion that supports the support members 44, 44 so as to be slidable with respect to a lifting support bracket 45.
- the support bracket 45 is supported so as to be movable up and down with respect to the device frame 8 in the vertical direction via a linear guide portion 47, and a cylinder device 48 for lifting is connected to the upper portion of the support bracket 45.
- the pressure roller 40a, 40b presses both sides of the base of the filler rubber F, and the position above the filler rubber F feed position. It is provided so as to move up and down between the position where it is retracted.
- the pressure-bonding rollers 40a and 40b can be retracted upward as shown by chain lines. It ’s like that.
- the first clamping means 50 that clamps the vicinity of the tip of the filler rubber F pasted on the outer peripheral surface of the bead core C, and the filler that is cut to a predetermined length corresponding to one circumference of the outer periphery of the bead core F
- second clamping means 70 for clamping the vicinity of the rear end portion.
- the second moving means 70 is configured to be able to move to a position where the rear end F2 of the cut filler rubber F is opposed to the front end F1 on the outer periphery of the bead core (the position of the chain line in FIG. 11).
- one of the both clamping means, for example, the first clamping means 50 is configured to be displaceable toward the second clamping means 70 facing this (chain line in FIG. 11).
- the first clamping means 50 and the second clamping means 70 are each configured to perform a clamping operation when the rotation by the rotation support 10 is stopped. Therefore, in the vicinity of the first clamping means 50, the end portion F1 of the filler rubber F is separated from the reference position P1.
- a sensor 51 is provided to detect when the predetermined rotational angle position is reached, and based on a detection signal of the tip F1 by the sensor 51, the drive motor 17 of the rotary support 10 It is comprised so that rotation may be stopped.
- the first clamping means 50 and the second clamping means 70 are each configured to perform a clamping operation simultaneously with the rotation stop.
- the second clamping means 70 is a position where the rear end F2 is opposed to the front end F1 on the bead core C after the rear end F2 is cut by a cutting device 80 described later in the holding state.
- the first clamping means 50 is displaced toward the second clamping means 70 after the second clamping means 70 is moved after clamping the vicinity of the front end portion F1. To be controlled.
- the first clamping means 50 is a predetermined rotational angle position less than one turn from the reference position P1 in the rotation direction for winding the filler rubber of the rotating support 10, preferably the reference position P1.
- a rotation angle position of more than 270 ° and less than one turn, particularly preferably at a rotation angle range of 270 ° to 315 °, and slightly longer than the tip F1 of the filler rubber F (preferably 5 (About 15 mm) is provided so that the vicinity of the tip F1 is sandwiched from both sides with a protruding shape remaining.
- the first clamping means 50 has a pair of clamping members 50a, 50b that can be opened and closed, and is configured as follows.
- a base plate 53 that is pivotally supported by a support shaft 52 with respect to the apparatus frame 8 is provided behind the position where the bead core C is supported by the rotary support 10.
- a swing arm 55 is rotatably attached to a fulcrum shaft portion 54 set near the inside of the bead core C of the base plate 53, and a pair of the above-described pair is attached to a mounting plate 56 protruding forward from the swing arm 55.
- One of the sandwiching members 50a and 50b, for example, the sandwiching member 50a is attached in parallel with the filler rubber F in a standing posture attached to the bead core C.
- the other holding member 50b is pivotally connected to the one holding member 50a so as to be rotatable, and is moved forward and backward by a cylinder device 58 to a pinion 57 provided integrally with the holding member 50b. 59 is held together, and by the forward and backward movement of the rack 58, the sandwiching member 50b rotates in a direction to open and close with respect to the one sandwiching member 50a, and the filler is interposed between the one sandwiching member 50a. It is provided to hold rubber F.
- the other clamping member 5 Ob is held outside the filler rubber F except during the clamping operation, and enables the bead core C to be set and removed from the rotating support 10.
- Reference numeral 60 in the figure denotes a guide roller for feeding the filler rubber F between the sandwiching members 50a and 50b.
- the clamping members 50a and 50b are arranged so as to be outward from the outer peripheral surface of the bead core C as shown in the drawing in consideration of the inclination of the front end F1 of the filler rubber F wound around the outer peripheral surface of the bead core C. Inclined backward in the rotational direction. That is, the filler rubber F wound around the outer peripheral surface of the bead core C with the rotation of the rotating support 10 is pulled rearward in the rotational direction toward the outer edge side, so that the front end F1 rotates in the rotational direction with respect to the core outer peripheral surface. It will be inclined backwards. Therefore, the clamping members 50a and 50b are provided so that the tip F1 can be clamped in a direction corresponding to the inclination in consideration of the inclination of the tip F1 of the filler rubber F.
- the first clamping means 50 is a means for performing a displacement operation toward the second clamping means 70 that has moved to a position facing the first sandwiching means 50 in a state where the vicinity of the front end portion F1 of the filler rubber F is clamped.
- a cylinder device 61 is connected to the swing arm 55 that supports the holding members 50a and 50b, and the swing arm 55 rotates around the fulcrum shaft portion 54 by the operation of the cylinder device 61.
- the holding members 50a and 50b are provided so as to be rotationally displaced about the support shaft portion 54.
- the front end portion F1 of the filler rubber F is greatly extended toward the outer edge side of the filler rubber from the state where the front end portion F1 is inclined rearward in the rotational direction with respect to the outer peripheral surface of the bead core C. In the abutting position, it is possible to make it substantially perpendicular to the outer peripheral surface of the core as shown by the chain line in FIG. 11 and FIG.
- the base plate 53 is supported so as to be rotatable about the support shaft 52 by the operation of the cylinder device 62 connected to the lower end portion thereof, thereby supporting the base plate 53.
- the second clamping means 70 is cut to a predetermined length corresponding to one circumference of the bead core outer periphery at a position between the forward direction of the feeding device 20 and the reference position P1.
- the filler rubber F is provided so as to sandwich the vicinity of the rear end portion F2 from both sides while leaving a slight length (preferably about 5 to 15 mm) of the rear end portion F2 of the filler rubber F. That is, when cut by a cutting device 80 described later, the rear end portion F2 is held so as to protrude slightly.
- the second clamping means 70 has a pair of clamping members 70a, 70b, and one of the clamping members 70a is fed from the feeding device 20 to the reference position P1 as described above. It is arranged vertically along the side of one rubber F.
- the other holding member 70b is pivotally connected to the one holding member 70a so as to be rotatable above the filler rubber F to be fed, and is connected to a pinion 71 provided integrally with the holding member 70b.
- a rack 73 that is advanced and retracted by the ladder device 72 is held together, and the movement of the rack 73 causes the clamping member 70b to rotate in a direction that opens and closes with respect to the one clamping member 70a.
- the filler rubber F is sandwiched between 70a and 70a.
- the one holding member 70a is connected to and supported by the support shaft 52 via an arm member 74, and the rear end portion F2 of the filler rubber F by the both holding members 70a and 70b is supported.
- the rear end portion F2 is made to face the front end portion F1 affixed to the bead core C on the rotating support 10 by rotating around the support shaft 52 (see FIG. 11). It is provided so that it can move to a chain line.
- the support shaft 52 that supports the arm member 74 is connected to a cylinder device 75 at a radial protrusion at the rear of the base plate 53, and the support shaft 52 is rotated by the operation of the cylinder device 75. Accordingly, the arm member 74 is rotated to move the both clamping members 70a and 70b to the opposing position on the bead core C that has been clamped.
- a cutting device 80 for cutting the filler rubber F fed as described above is provided above the feeding device 20 side from the clamping operation position by the clamping members 70a and 70b.
- the cutter blade 81 is normally above the filler rubber F fed as described above, and obstructs the feeding of the filler rubber F by the feeding device 20.
- the cutter blade 81 is provided so as to cut the filler rubber F by being lowered by the operation of a cylinder device or the like after the clamping operation by the second clamping means 70. Yes.
- the cutting position by the cutting device 80 is such that the length from the reference position P1 for starting attachment on the bead core C supported by the rotating support to the cutting position is the first position on the outer periphery of the bead core.
- the distance from the front end F1 of the filler rubber F clamped by the clamping means 50 to the reference position P1 or the butting position force of the front end and the rear end on the outer periphery of the bead core is approximately the distance to the reference position. It is set to correspond.
- the filler rubber F affixed to the outer peripheral surface of the bead core C is placed on both sides at a slightly forward position in the rotational direction from the pressure rollers 40a and 40b, as shown in Figs. 3, 17, and 18.
- a pressure roller unit 90 having a pair of pressure rollers 90a and 90b for pressing and shaping.
- One of the nipping rollers 90a and 90b, that is, the nipping roller 90a located on the back side of the filler rubber F when viewed from the front of the apparatus (the front surface of the rotation support) is along the side surface on the back side of the filler rubber F.
- the support shaft 92 is attached to a bracket 91 attached to the apparatus frame 8 and is supported in a direction orthogonal to the outer peripheral surface of the bead core so as to be rotatable.
- the pinching roller 90a has a roller body 93 provided to the support shaft 92 through an eccentric cam roller 94, and approaches the side surface of the filler rubber F by rotation of the cam roller 94. Alternatively, it is supported so that it can be separated, and it can be separated from the filler rubber F force except during pinching! (Fig. 18).
- a cylinder device 95 is connected to the cam roller 94, and the cam roller 94 is rotated by the operation of the cylinder device 95.
- the other pinching roller 90b has a shaft portion 97 attached to an arm 96 that is rotatably supported by the bracket 91, and the arm 96 is connected to the cylinder device 98. By operation, it is provided so that it can be opened and closed with respect to the one nipping roller 90a, and when the filler rubber is pasted, the nipping roller 90b is in contact with the side surface of the filler rubber F (see FIG. 17). It is configured to be in the state of the chain line in FIG. 17 when the bead core is supplied and set and when the bead is taken out after the filler rubber is pasted. [0060] Around the rotating support 10, guide rollers for restricting the fall of the filler rubber F attached to the bead core C in an upright posture are disposed at appropriate intervals as necessary. (Not shown).
- the filler rubber F continuously extruded from the extruder 5 in a triangular cross section is gradually converted into a standing posture through the air-cooled festoon device 6. However, it is fed to the part of the feeding device 20 to the pasting device unit 1.
- the ring-shaped bead core C is sent from the bead core supply unit 2 to the front of the affixing device unit 1 by the transporting unit 4 that can hold and transport the bead core C in a locked state. Is sent to the rotation support 10 of the attaching device unit 1 and is locked and held from the inside by the support member 13 of the rotation support 10.
- the guide plate 24 and the clamping members 27, 27 approach the reference position P1, and the bracket 29 supporting the clamping members 27, 27 further advances, so that the front end F1 of the filler rubber F Is fed in a standing posture to the reference position P1 set on the top of the outer peripheral surface of the bead core C supported by the rotating support 10 (FIG. 20B), and simultaneously with this feeding, the clamping action by the clamping member 27 is released. .
- the pressure roller unit 40 having a pair of pressure rollers 40a and 40b is in a pressure position where the pressure roller unit 40 descends and comes into contact with the bead core C.
- both sides of the base are pressed against the bead core C by the pressing rollers 40a and 40b and pasted.
- the second clamping means 70 that clamps the cutting device 80 and the vicinity of the rear end F2 to be cut does not interfere with the advancement of the feeding device 20 and the feeding of the filler rubber F.
- the upper part of the tray is retracted to the rear position.
- the front end portion F1 of the filler rubber F reaches a predetermined rotation angle position, this is detected by the sensor 51, and the front end portion F1 is slightly more than the clamping position by the first clamping means 50. Stop rotation at the advanced position).
- a clamping operation is performed by operating the cylinder device 59 of the first clamping means 50, and the vicinity of the tip F1 is clamped from both sides by both clamping members 50a and 50b (FIG. 20D).
- the first clamping means 50 clamps the distal end portion F1 in a direction corresponding to the inclination in a state where the first clamping means 50 is inclined rearward in the rotational direction with respect to the outer peripheral surface of the core.
- the feeding device 20 and the clamping members 27, 27 that have been in the forward movement position have returned to their original positions.
- the clamping means 70 of the table 2 moves to a position close to the filler rubber F, performs the clamping operation by the operation of the cylinder device 72, and the filler rubber F is cut by both clamping members 70a and 70b.
- the vicinity of the portion that becomes the rear end F2 is clamped.
- the filler rubber F between the guide plates 24 and 24 is again held.
- the cutter blade 81 of the cutting device 80 is lowered, and the filler rubber F clamped by the second clamping means 70 is transferred from the tip F1 to the circumference of the core. Cut at the length corresponding to (Fig. 20E).
- the second clamping means 70 clamps the vicinity of the rear end F2 of the filler rubber F from which the filler rubber F has been cut, and the arm by operating the cylinder device 75.
- the holding position force is also moved to a position facing the tip end portion F1 on the bead core C.
- the outer edge side of the filler rubber F is stretched so that the rear end portion F2 is moved substantially perpendicular to the outer peripheral surface of the core.
- the tire bead manufacturing method and apparatus includes a filler rubber having a triangular cross-section that is extrusion-molded on the outer peripheral surface of a bead core that is formed by winding a wire in a ring shape and laminated into a square cross-section.
- a bead is manufactured by sticking the outer peripheral surface in a standing posture. It can use suitably for doing.
- ⁇ 1 It is a schematic front view of the bead manufacturing apparatus of the present invention.
- FIG. 2 is a schematic plan view of the above.
- ⁇ 3 It is a schematic front view of a pasting device part centering on a rotating support.
- FIG. 4 is a longitudinal sectional view of a rotary support.
- FIG. 5 is a front view from the side with respect to the feeding direction of the filler rubber feeding device.
- FIG. 6 is a plan view of the feeding device portion.
- FIG. 7 is a sectional view taken along line VII-VII in FIG.
- FIG. 8 is a sectional view taken along line VIII-VIII in FIG.
- FIG. 9 is a side view of the pressure roller portion.
- FIG. 10 is a partially enlarged explanatory view of a filler rubber in a crimped state.
- FIG. 11 is a front view showing a support state of the first clamping means and the second clamping means.
- FIG. 12 is a side view of a portion of the first clamping means.
- FIG. 13 is a plan view of the above.
- FIG. 15 is a plan view of the above.
- FIG. 16 is an explanatory view of a joint state by butting filler rubber.
- FIG. 17 is a side view of a pinching roll portion.
- FIG. 18 is a plan view of a part of the above.
- FIG. 19 is a cross-sectional view showing an example of a bead core.
- FIG. 20A is an explanatory diagram of a state in which the filler rubber is attached to the bead core.
- FIG. 20B is an explanatory diagram of a state where the filler rubber is attached to the bead core.
- FIG. 20C is an explanatory diagram of a state where the filler rubber is attached to the bead core.
- FIG. 20D is an explanatory diagram of a state where the filler rubber is attached to the bead core.
- FIG. 20E is an explanatory diagram of a state where the filler rubber is attached to the bead core.
- FIG. 20F is an explanatory diagram of a state in which the filler rubber is attached to the bead core.
- [20G] It is an explanatory view of a state where the filler rubber is attached to the bead core.
- FIG. 21 is a perspective view in which a part of a bead for tire is cut away.
- FIG. 22 is an explanatory diagram of a state in which filler rubber is wound around a bead core of a tire bead.
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/374,023 US9138952B2 (en) | 2006-07-21 | 2006-07-21 | Method of and apparatus for manufacturing a tire bead |
PCT/JP2006/314473 WO2008010293A1 (en) | 2006-07-21 | 2006-07-21 | Method and device for producing tire bead |
JP2008525771A JP4746100B2 (ja) | 2006-07-21 | 2006-07-21 | タイヤ用ビードの製造方法及び装置 |
DE112006003959.8T DE112006003959B4 (de) | 2006-07-21 | 2006-07-21 | Verfahren und Vorrichtung zum Herstellen eines Reifenwulstes |
US13/236,727 US8857489B2 (en) | 2006-07-21 | 2011-09-20 | Method of and apparatus for manufacturing a tire bead |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/314473 WO2008010293A1 (en) | 2006-07-21 | 2006-07-21 | Method and device for producing tire bead |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/374,023 A-371-Of-International US7183763B1 (en) | 2005-11-30 | 2006-03-14 | Probe card |
US13/236,727 Division US8857489B2 (en) | 2006-07-21 | 2011-09-20 | Method of and apparatus for manufacturing a tire bead |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008010293A1 true WO2008010293A1 (en) | 2008-01-24 |
Family
ID=38956629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/314473 WO2008010293A1 (en) | 2006-07-21 | 2006-07-21 | Method and device for producing tire bead |
Country Status (4)
Country | Link |
---|---|
US (2) | US9138952B2 (ja) |
JP (1) | JP4746100B2 (ja) |
DE (1) | DE112006003959B4 (ja) |
WO (1) | WO2008010293A1 (ja) |
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CN103221776A (zh) * | 2010-11-19 | 2013-07-24 | 住友精密工业株式会社 | 6方向指向装置 |
JP2013154486A (ja) * | 2012-01-27 | 2013-08-15 | Bridgestone Corp | タイヤ用ビード部材の製造方法、製造装置およびタイヤ用ビード部材 |
JPWO2013161031A1 (ja) * | 2012-04-26 | 2015-12-21 | 不二精工株式会社 | ビードリング巻取り装置 |
WO2013161031A1 (ja) * | 2012-04-26 | 2013-10-31 | 不二精工 株式会社 | ビードリング巻取り装置 |
US9968985B2 (en) | 2012-04-26 | 2018-05-15 | Fuji Seiko Co., Ltd | Bead ring winding device |
RU2601523C2 (ru) * | 2012-04-26 | 2016-11-10 | Фудзи Сейко Ко., Лтд. | Устройство для намотки бортового кольца |
WO2013172127A1 (ja) * | 2012-05-16 | 2013-11-21 | 住友ゴム工業株式会社 | ビードエーペックスゴム形成方法、及びビードエーペックスゴム形成装置 |
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KR101930985B1 (ko) | 2012-05-16 | 2018-12-19 | 나카타 엔지니어링 가부시키가이샤 | 비드 에이펙스 고무 형성 방법, 및 비드 에이펙스 고무 형성 장치 |
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WO2015049768A1 (ja) * | 2013-10-03 | 2015-04-09 | 不二精工 株式会社 | ビードコアに対するフィラーの装着方法及び装着装置 |
US10322555B2 (en) | 2013-10-03 | 2019-06-18 | Fuji Seiko Co., Ltd. | Method and device for mounting filler to bead core |
JPWO2015049768A1 (ja) * | 2013-10-03 | 2017-03-09 | 不二精工株式会社 | ビードコアに対するフィラーの装着方法及び装着装置 |
JP6242460B1 (ja) * | 2016-10-28 | 2017-12-06 | 中田エンヂニアリング株式会社 | ビードエーペックスゴム形成方法、及びビードエーペックスゴム形成装置 |
WO2018079313A1 (ja) * | 2016-10-28 | 2018-05-03 | 中田エンヂニアリング株式会社 | ビードエーペックスゴムの形成方法、及び形成装置 |
CN109890602A (zh) * | 2016-10-28 | 2019-06-14 | 日本中田工程株式会社 | 胎圈三角胶的形成方法以及形成装置 |
EP3517287A4 (en) * | 2016-10-28 | 2020-05-27 | Nakata Engineering Co., Ltd. | FORMING METHOD AND RUBBER FORMING DEVICE FOR HEEL TOP |
US11014319B2 (en) | 2016-10-28 | 2021-05-25 | Nakata Engineering Co., Ltd. | Method of forming bead apex rubber and forming device |
CN106393756A (zh) * | 2016-11-17 | 2017-02-15 | 杭州朝阳橡胶有限公司 | 一种全钢子午线轮胎的三鼓成型机 |
CN106393758A (zh) * | 2016-11-17 | 2017-02-15 | 杭州朝阳橡胶有限公司 | 一种轮胎成型机外侧胎圈预置装置 |
JP2018118493A (ja) * | 2017-01-27 | 2018-08-02 | 株式会社ブリヂストン | フィラー付きビードの製造方法および装置 |
JP7413818B2 (ja) | 2020-02-14 | 2024-01-16 | 住友ゴム工業株式会社 | エイペックスの貼付装置及び貼付方法 |
JP7413817B2 (ja) | 2020-02-14 | 2024-01-16 | 住友ゴム工業株式会社 | エイペックスの貼付装置及び貼付方法 |
Also Published As
Publication number | Publication date |
---|---|
US8857489B2 (en) | 2014-10-14 |
JP4746100B2 (ja) | 2011-08-10 |
DE112006003959B4 (de) | 2021-01-14 |
DE112006003959T5 (de) | 2009-05-28 |
US9138952B2 (en) | 2015-09-22 |
US20120024480A1 (en) | 2012-02-02 |
JPWO2008010293A1 (ja) | 2009-12-17 |
US20090266474A1 (en) | 2009-10-29 |
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