JPH08142227A - Method and apparatus for bonding filler - Google Patents

Abstract

PURPOSE: To obtain a method and ah apparatus for bonding a filler in which excellent bonding and a joint are obtained with a simple structure. CONSTITUTION: The starting end of a substantially laterally triangular sectional strip filler 9 is supplied onto a rotatably supported bead core 5, and the base end side of the filler 9 is press-bonded to the outer periphery of the core 5. Thereafter, the core 5 is rotated around an axis to annularly adhere the filler 9 to the outer periphery of the core 5, and when the end 17 is rotated at a predetermined angle, the rotation is stopped, the filler 9 is cut in a predetermined size, and then the end 17 of the filler 9 and the end formed by cutting are moved to the upper part of a stationary plate 14. Then, the core 5 is reversely rotated in the state that the vicinity of the end of the filler starting end 17 is pressed to the plate 14, the end side of the end 17 is elongated, and the cut end of the end 17 is bonded to the cut end of the terminated end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filler sticking method and apparatus for manufacturing a bead with a filler which is an intermediate material of a tire by sticking a filler on the outer peripheral surface of a bead core.

[0002]

2. Description of the Related Art Heretofore, as a pasting device for pasting a filler on the outer peripheral surface of a bead core, the pasting devices described in JP-A-64-90736 and JP-A-2-20331 are known. . In each of these filler sticking devices, the shortest side of the triangle of one filler or apex having a strip shape and a cross section in the width direction which is a relatively elongated triangle is brought into close contact with the outer peripheral surface of one bead core to form a triangle. It is attached as if it stands upright.

[0003]

However, the above-described filler sticking devices have the following problems.
When the filler is attached to the outer peripheral surface of the bead core in an annular shape, the difference between the inner peripheral length and the outer peripheral length of the filler is large, so that the outer peripheral side of the filler is greatly opened at the start end portion and the end portion of the filler. For this reason, the filler start end and the end are sandwiched between the hands and the hand is given a predetermined movement to bring the filler start and end to the joining position, or the tip of the filler start and the end of the filler are stretched and forced. Since the movement of the hand and its mechanism are complicated, the equipment is excessive and the cost is high, and the control mechanism is more complicated and maintenance is required to maintain the movement of the hand with high accuracy. There was a disadvantage that it was also disadvantageous. Further, since the pasted beads with fillers can be manufactured only one by one, the production capacity is low and a large number of devices are required, the total cost is high and a large number of workers are required.

Moreover, two beads in total, one bead portion with filler and one bead portion with filler, are required for each bead portion of the tire. At this time, if there are variations in the quality of the left and right beads with filler, the quality of the tire is adversely affected. Therefore, an object of the present invention is to provide a filler sticking method and a device for sticking a filler and a joint with a relatively simple structure.

[0005]

According to the method of applying a filler of the present invention, the starting end of a belt-shaped filler having a cross section in the width direction of a triangle is supplied onto a bead core rotatably supported, and the base end of the starting end of the filler is supplied. After crimping the side to the outer peripheral surface of the bead core, the bead core is rotated around the axis to affix the filler to the outer peripheral surface of the bead ring in an annular shape, and when the starting end portion is rotated by a predetermined angle, the rotation is stopped and the filler is predetermined. After cutting to size, the bead core and the filler were further rotated in the forward direction to move the starting end of the filler and the end formed by the cutting to the upper part of the fixing plate, and then the end of the starting end of the filler was pressed against the fixing plate from above. In this state, the bead core is rotated in the reverse direction to extend the tip side of the filler start end, and in that state the cut end face of the filler start end and the cut end face of the end end are joined together. And wherein the door.

The filler sticking device of the present invention includes a bead core holding device that is rotatably supported and holds a bead core, and a guiding device that guides a leading end portion of a belt-shaped filler having a substantially triangular cross-section supplied on the bead core. A crimping device that crimps the base end side of the filler start end portion to the bead core outer peripheral surface, and a cutting device that cuts the filler into a predetermined sticking length when the start end portion of the filler stuck to the bead core outer peripheral surface rotates by a predetermined angle. , A pressing device for pressing the vicinity of the tip of the filler starting end from above to the fixing plate, a pressure welding device for crimping and joining the cutting end face of the filler starting end and the cutting end face of the terminal end, and rotating the bead core forward and backward about the axis. And a driving device.

According to a third aspect of the present invention, the bead core holding device holds a pair of bead cores whose side surfaces are in close contact with each other, and the guide device has a proximal end in which the bead cores are in close contact with each other. The pair of fillers, each of which has a substantially triangular cross-section in the widthwise direction, is guided to the corresponding bead core, and the tip end side of each of the pair of fillers attached to each bead core outer circumferential surface in the radial direction. The squeezing device for squeezing each outward, and the above 1
It becomes more effective by providing a pair of bead cores and a dividing device for making a cut into each contact surface of the filler to divide into a set of bead cores with a filler.

Further, according to a fourth aspect of the present invention, the guiding device raises the filler at a low angle with respect to the longitudinal direction by raising the tip side slightly upward with the rear end as a fulcrum when the filler is cut. You will be able to cut sharply with.

[0009]

First, the function of the invention described in claim 1 will be described. The cross-section in the width direction of the filler is thin on the tip side of the filler, so that the residual stress is large and the filler easily contracts. Therefore, no matter how well the filler is cut, the cut end surface of the filler contracts particularly greatly at the tip end side. However, according to this filler sticking method, the bead core is reversely rotated in a state where the vicinity of the tip of the filler start end portion is pressed against the fixing plate from above so that the tip end side of the filler start end portion is relatively stretched. As a result, the cutting end surface of the filler starting end portion, which is curved and contracted on the leading end side, is corrected to a substantially straight shape or a state where the leading end side is excessively stretched, and in that state, the cutting end surface and the terminating end portion of the filler starting end portion are cut. It becomes possible to join the end face with just enough or the tip side with a slight overlap. Further, since the tip end side of the filler is thin as described above, the quality is not affected even if the fillers are joined with a slight overlap.

Further, the filler applying apparatus according to the second aspect operates as follows. First, the bead core is held by the holding device. Next, the guide device guides the starting end portion of the filler to approach the outer peripheral surface of the bead core, supplies the starting end portion of the filler to the outer peripheral surface of the bead core, and then the crimping device sets the base end side of the filler starting end portion to the outer peripheral surface of the bead core. Crim the surface. Then, the guide device retracts slightly (approximately 10 mm). Next, the bead core is positively rotated around the axis by the driving device to attach the filler to the outer peripheral surface of the bead core in an annular shape, and the rotation is stopped when the starting end portion of the filler is rotated by a predetermined angle. As described above, after moving the tip end side (downstream side) of the guide device slightly (about 10 mm) upward with the rear end portion of the guide device as a fulcrum, the cutting device sets the filler to a length equal to one circumference of the bead core. Disconnect. In this way, the filler is bent on the tip side of the guide device by slightly lifting the tip side of the guide device, and by cutting this bent portion of the filler, the cut end face of the filler seen in the thickness direction is lowered. The area becomes sharp and wide at an angle, and when the cut end surfaces are joined, the joining surface increases and the joining force increases. And after cutting,
The guide device returns to the origin position. Next, the bead core is further rotated forward by the driving device to move the cutting end face of the filler starting end and the cutting end face of the terminating end to the upper surface of the fixing plate, and then the pressing device fixes the vicinity of the tip of the filler starting end from above. While being pressed against the plate, the bead core is reversely rotated by a predetermined amount and stopped. Then, the cut end surface of the filler starting end portion is curved, but is pressed by the pressing device so that the tip end side of the filler starting end portion does not move, and only the filler proximal end side is attached to the outer peripheral surface of the bead core. By rotating in the attached state in the reverse direction, the filler base end side retreats and the filler start end part becomes relatively the same as the tip end side is extended, and the cut end face of the filler start end part is substantially linear in the axial direction of the bead core. It will come to suit Next, in a state where the cut end face of the filler starting end portion is substantially linear as described above,
A series of operations is completed by pressing and joining the cut end surface of the starting end portion and the cut end surface of the end portion of the filler by the pressure welding device, and the bead with filler is completed.

Further, in the filler sticking device according to the third aspect, the holding device holds a pair of bead cores whose two side surfaces are in close contact with each other, and in the guide device, two base ends are in close contact with each other. The starting end portions of the pair of band-shaped fillers are guided to the outer peripheral surfaces of the corresponding pair of bead cores. Then, the sticking of the pair of band-shaped fillers is completed over the entire circumference of the outer peripheral surface of the pair of bead cores, and the tip ends of the pair of bead with fillers that have been pressure-bonded / joined to the start end and the end of the filler. The sides are each sewn radially outward with a squinting device. Next, the side surfaces of the two bead cores and the base ends of the two belt-shaped fillers are brought into close contact with each other by the dividing device.
Make a cut on each contact surface of the bead with filler to make it easy to divide each bead with filler. Then, it becomes easy to supply each one of the bead with filler to the left and right bead portions of the tire in the next adjacent tire forming step.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings showing the outline of an apparatus used for carrying out the method of the present invention. 1 is a schematic side view showing a main part of the present invention, and FIG. 2 is a front view of FIG. 1 and 2, reference numerals 1, 2, and 3 are drive rollers, and these drive rollers 1, 2, and 3 are rotatably supported by bearings (not shown) on the frame 4, and are driven by a drive device 20 shown in FIG. It is driven and rotated in the forward and reverse directions. The pulley 21 is coaxially located on the opposite side of the bearing of the drive roller 1, the pulleys 22 and 23 are coaxially located on the opposite side of the bearing of the drive roller 2, and the opposite side of the bearing of the drive roller 3. Pulleys 24 and 25 are respectively fitted on the same axis. A timing belt 26 is provided between the pulleys 21 and 22, a timing belt 27 is provided between the pulleys 23 and 24, and a pulley 25 and a pulley 28 are provided.
Timing belts 29 are respectively wound around and endlessly. The pulley 28 is fitted on the output shaft of the speed reducer 30, and the input shaft of the speed reducer 30 is connected to the output shaft of the servo motor 31. Also, the speed reducer 30
The servo motor 31 is attached to a frame 4c which has a base end fixed to the frame 4 and which projects in a right angle direction. And the pulleys 21, 22, 23, 24, 25, 2
8, timing belts 26, 27, 29, speed reducer 30,
The servomotor 31 constitutes a drive device 20 that drives the holding device 10 for holding the bead cores 5 as a whole.

Since the driving rollers 1, 2, 3 have the same structure, a description will be given with reference to FIG. 3 which is a cross-sectional view of the driving roller 1 as a typical example. A small diameter cylindrical bead core receiving portion 6 is provided at the center of the drive roller 1, and cylindrical filler receiving portions 7 and 8 are formed on both sides of the bead core receiving portion 6. The filler receiving portion 7 and the filler receiving portion 8 are screwed together by the screw portion 15, and the width W of the bead core receiving portion 6 can be changed according to the width of the bead cores 5, 5. Further, the filler receiving portion 8 is screwed to the shaft with the screw portion 16, so that the filler receiving portion 7 and the filler receiving portion 8 can be easily and simultaneously replaced according to the height change of the bead cores 5, 5. There is. Reference numeral 9 is a band-shaped filler,
The cross section in the width direction has an elongated triangle shape as shown in FIG. The base ends 11, 11 of the filler 9 form a pair in a state where they are in close contact with each other, and are sent to the guide device 40 from an unwinding unit or an extruder (not shown). The bead core 5 has a quadrangular cross section, and is supplied to the bead core receiving portion 6 of the driving rollers 1, 2, and 3 in a state where the respective side surfaces are in close contact with each other. And the bead cores 5, 5
When mounted around the drive rollers 1, 2, and 3, the bead core receiving portions 6 of the drive rollers 1, 2, and 3 are in rolling contact with the inner circumferences of the bead cores 5 and 5, respectively. In this way, the bead with filler is composed of the pair of bead cores 5 and 5 and the pair of fillers 9 and 9 is
This is to simultaneously manufacture a set of beads with a filler to equalize these quality performances and improve the quality of the product tire. Also, it is possible to manufacture two beads with a filler at a time to improve the production capacity. This is because it can be achieved.

Below the drive roller 1, a squeeze roller 60 and a tension roller 70 are rotatably supported in a cantilever manner at both ends of a holder 68, respectively. In FIG. 2, the squeeze roller 60 has a small-diameter, cylindrical bead core receiving portion 61 in the central portion, and both sides of the bead core receiving portion 61 are tapered frustoconical toward the bead core receiving portion 61. Filler curled portions 62, 62 are formed. Steps 63 and 63 are formed between the bead core receiving portion 61 and the filler squeezing portions 62 and 62. The tension roller 70 has a shape similar to that of the drive roller 1 shown in FIG. 3, and the holder 68 is rotatably supported by the pin 64 of the movable plate 65 which can move up and down as shown in FIG. There is. The lower part of the moving plate 65 is rotatably connected to the tip of the piston rod 67 of the cylinder 66. A roller shaft 71 of a tension roller 70 attached to one end of the holder 68 is rotatably connected to a tip of a piston rod 73 of a cylinder 72. Then, as shown in FIG. 14, when the piston rod 73 is retracted by the operation of the cylinder 72, the tension roller 70 moves downward with the pin 64 as a fulcrum, and the bead cores 5 and 5 are in rolling contact with the inner circumference of the bead cores 5 and 5. By pressing down, thereby maintaining the bead cores 5, 5 in an upright state in cooperation with the drive rollers 1, 2, 3 and also when the drive rollers 1, 2, 3 rotate, the bead cores 5, 5 in an upright state. Rotate around the axis as it is. The drive rollers 1, 2, and 3, the tension roller 70, the cylinder 72, and the piston rod 7 described above.
The holding device 10 is constituted by 3 and the like as a whole.

A frame 4a is provided upstream of the drive roller 1.
Are fixed in a direction perpendicular to the frame 4. A moving frame 41 is provided on the frame 4a as a pair of slide rails 4
It is supported by 1a and a slide bearing 41b, and is attached so as to be movable back and forth as indicated by an arrow A in FIG. In FIG. 5 and FIG. 6 which is a front view thereof, the moving frame 41 is composed of an upper moving frame 41d and a lower moving frame 41e, and the upper moving frame 41d is provided at the rear end portion of the guide device 40. The tip side of the guide device 40 can be moved approximately 10 mm above the position shown in FIG. Since both ends of the shaft 41f are supported by the lower moving frame 41e, the upper moving frame 41e.
d and the lower moving frame 41e move integrally in the front-rear direction indicated by arrow A in FIG. Reference numeral 42 is a cylinder provided in the lower moving frame 41e, and the tip of the piston rod 43 of this cylinder 42 is fixed to the frame 4a side. Reference numeral 44 is a plurality of free rollers for guiding the fillers 9, 9, reference numeral 45 is a drive roller for conveying the fillers 9, 9, and the servo motor 4
6, the timing belt 47 and the pulleys 45a, 46
It is driven via a. Reference numeral 48 is a presser roller,
By operating the cylinder 49, the fillers 9 and 9 are pressed around the fulcrum 49a against the outer peripheral surface of the drive roller 45 so that the fillers 9 and 9 can be conveyed without slipping.

Reference numeral 50 is a lower support plate for receiving the fillers 9, 9 and is fixed to the upper moving frame 41d.
Reference numeral 51 is an upper presser for pressing the fillers 9 and 9 from above onto the lower support plate 50. This upper presser foot 51 is designed to be operated by the cylinder 52, and the filler 9, 9
By being sandwiched by the lower support plate 50 and the upper presser 51 so as not to move, the blade is stably cut by a blade 81 described later. Further, as shown in FIG. 8 which is a plan view of the lower support plate 50 and the upper presser 51, the width of the cutout is a rectangular cutout 53 slightly wider than the width of the bead cores 5, 5. By this, when the starting end portion formed after cutting the fillers 9, 9 is guided and supplied to the outer peripheral surfaces of the bead cores 5, 5, the lower support plate 50 and the upper presser foot 51 interfere with each other. Instead, the bottom surfaces 12 and 12 of the lower surfaces of the fillers 9 and 9 and the outer peripheral surfaces of the bead cores 5 and 5 can be brought into direct contact with each other. Then, the moving frame 41, the upper moving frame 41d, the lower moving frame 41e, the cylinder 42, the free roller 44,
The drive roller 45, the motor 46, the presser roller 48, the cylinder 49, the lower support plate 50, the upper presser 51, the cylinder 52, etc. as a whole, the starting end portions of the fillers 9, 9 are the bead cores 5,
The guide device 40 is configured to guide and supply the outer peripheral surface of the.

In FIG. 1, reference numeral 130 is a micro-type optical sensor consisting of a pair of light emitters and receivers, each fixed to the frame 4. Filler 9, 9 bead core 5,
5 is rotated while being attached in an annular shape to the outer peripheral surface of 5, and is detected at the moment when the starting ends of the fillers 9, 9 pass between the pair of sensors 130. Here, if the sensor 130 detects the start ends of the fillers 9 and 9 and then rotates and then stops and cuts, the positions of the cut end face at the end and the cut end face at the start end match. We are investigating in advance whether the length will be longer and good bonding will be possible. Therefore, after the sensor 130 detects the starting ends of the fillers 9 and 9, the servo motor 31 of the drive device 20 is rotated by a predetermined angle grasped in a preliminary investigation, and stopped accurately. Next, the upper moving frame 41d is attached to the shaft 4
Around the 1f, it is rotated upward by a cylinder (not shown) to lift the tip side of the guide device 40 to lift the fillers 9, 9
Bend. When the blade 81 described below cuts the strip-shaped fillers 9, 9, two cutting end faces are formed, the downstream cutting end face becomes the terminal end, and the upstream cutting end face becomes the next starting end. As a result, the filler 9 currently being applied,
It is possible to obtain a length such that the start end face of 9 and the cut end face of the end portion just cut match each other exactly.

5 and 6, reference numeral 80 is a cutting device for cutting the fillers 9, 9 in the width direction, and the blade 81 is detachably fixed to one end of a support member 82 for supporting the blade 81. Two slide bearings 83 are detachably fixed to the other end of the member 82. Both ends of these slide bearings 83 are slidably fitted with a pair of guide shafts 84 fixed to the upper moving frame 41d. Reference numeral 85 is a rodless cylinder for moving the blade 81 in the width direction of the fillers 9, 9, and both ends of the rodless cylinder 85 have upper moving frames 41.
A moving element 86 fixed to the slide bearing 83 and fixed to the slide bearing 83 moves in the axial direction along the outer peripheral surface of the rodless cylinder 85, whereby the blade 81 cuts the fillers 9, 9 in the width direction. . A cylinder having a rod may be used instead of the rodless cylinder 85, or a moving system using a motor may be used.

An electric heater 87 is provided on the upper surface of the blade 81 to heat the blade 81 while automatically controlling it to around 180 degrees Celsius so that the fillers 9, 9 can be easily cut. Then, the upper and lower surfaces of the blade 81 are subjected to Teflon coating and plasma treatment except for the edge portions of the blade to prevent the rubber melted by heat from adhering to the upper and lower surfaces of the blade 81 and the cut end surfaces of the fillers 9, 9. are doing. Also,
The blade 81 is inclined in the lengthwise direction of the fillers 9, 9, whereby the fillers 9, 9 are sharply cut at a low angle to make the area of the cut surface as large as possible.
The joining area between the cutting end face of the starting end portion and the cutting end face of the terminating end portion 9 is increased to increase the joining force. Further, as shown in FIG. 7, since the tip end side of the guide device 40 is lifted to bend the fillers 9 and 9 and then cut, the cutting angle θ of the fillers 9 and 9 is after the bending of the fillers 9 and 9 is released. Is even lower, and the angle θ1 after cutting can be set to 15 degrees, which is close to the limit. Then, the blade 81, the support member 82, the slide bearing 83, the guide shaft 84,
The rodless cylinder 85, the mover 86, and the heater 87 constitute a cutting device 80 as a whole.

In FIGS. 1 and 2, reference numeral 91 is a filler core 9, the base end sides 12 and 12 of the start ends of which are bead cores 5,
5 is a crimping plate for crimping to the outer peripheral surface of the rocking frame 9
It is adapted to be lifted and lowered by a cylinder 92 which is attached to No. 3 and arranged vertically. The swing frame 93 can swing about a pin 94, which is a fulcrum, in a vertical direction by about 90 degrees through an arm 96 by an operation of a cylinder 95. The tail end of the cylinder 95 is rotatably fixed to the frame 4c. By doing so, a wide space is created above the drive roller 1 when inserting the bead cores 5, 5 into the holding device 10 at the initial stage of attachment and when taking out the bead with filler after the attachment is completed, which facilitates the work. become. Then, the crimping plate 91, the cylinder 92, the swing frame 93, the pin 94, the cylinder 95,
The arm 96 constitutes the crimping device 90 as a whole.

Reference numeral 101 is a pressing plate for pressing the vicinity of the tips 13, 13 of the starting end portions of the fillers 9, 9 against the fixing plate 14 from above, and this pressing plate 101 can be moved vertically by the cylinder 102 via the outer member 108. Has become.
In FIG. 9 which is a view taken along the line Y-Y in FIG. 1 (including a partial cross-sectional view), the pressing plates 101 form a pair on the left and right, and the lower surface 104 of the pressing plate 101 is the tip of the filler 9, 9. The pressing plate 101 can be rotated around the pin 103 so that the pressing plate 101 can move in conformity with the triangular shape of the upper surface on the 13 and 13 side. The pressing plate 101 is attached to the nut member 105 by the pin 103, and
Reference numeral 5 is screwed with the screw shaft 106. Further, the nut member 1 is provided on the inner peripheral surface of the groove 109 formed in the outer jacket member 108.
The outer peripheral surface of 05 is slidably fitted, and the cross-sectional shape of the groove 109 in the direction orthogonal to the axis is substantially square. Therefore, the nut member 105 fitted in the groove 109 in the same shape can slide in the axial direction of the screw shaft 106, but cannot rotate around the axis of the screw shaft 106. There is.

A handle 1 is attached to one end of the screw shaft 106.
No. 07 is attached, and when the handle 107 is rotated in the forward and reverse directions, the nut members 105 and 105 are attached to the screw shaft 10 so that the pressing plates 101 and 101 move toward and away from each other.
6 and the right screw and the left screw are screwed together. Therefore, by turning the handle 107, the width size of the fillers 9, 9 can be changed. The fixed plate 14 has its base end fixed to the frame 4 and projects in a cantilever manner between the drive roller 2 and the drive roller 3 in parallel with them, and the fixed plate 14 has a central portion on the upper surface thereof. Form a groove 14a which is a receiving portion for the bead cores 5, 5. The left and right upper surfaces of the groove 14a are the receiving portions 14b, 14b of the fillers 9, 9 and have curved surfaces that substantially match the outer peripheral surfaces of the bead cores 5, 5. Then, the fixed plate 14, the swing frame 93, the pressing plate 101, the cylinder 102, the pin 103, the nut member 105, the screw shaft 106, the handle 107, the outer cover member 108, and the groove 1.
09 and the like constitute the pressing device 100 as a whole.

Reference numeral 111 denotes a press-contact plate for joining the inclined surfaces of the cut end surface of the starting end portion and the cut end surface of the end portion of the fillers 9, 9 located on the upper surface of the fixing plate 14 by simultaneously crimping and joining them from above. Then, the cylinder 112 fixed to the swing frame 93 lowers in the axial direction of the bead cores 5, 5.
It is going to rise. The lower surface side of the pressure contact plate 111 is thickly coated with a relatively soft material, such as sponge or soft urethane, so that the entire widths of the fillers 9 can be uniformly and evenly pressed. Further, the fixed plate 14, the swing frame 93, the pressure contact plate 111, and the cylinder 112 constitute the pressure contact device 110 as a whole.

In FIG. 10, which is a view taken along the line XX in FIG. 1, reference numeral 116 is a raising roller rotatably supported by a forked metal fitting 118, and the raising roller 116 has a wedge-shaped cross section, and the raising roller 116 is shown. By pressing the widthwise central portions of the fillers 9 with, as shown in FIG.
Faces 12a, 12a of the base sides 12, 12 of the fillers 9, 9
Is pressed against the outer peripheral surfaces of the bead cores 5 and 5 so that the tips 9 and 13 of the fillers 9 and 9 are raised toward the outer side in the radial direction. In this way, the raising roller 116
And the above-mentioned curling roller 60 are used together, the curling of the fillers 9, 9 becomes more effective. The frame 4b is fixed to the frame 4, and the cylinder 117 fixed to the frame 4b causes the raising roller 116 to descend and rise in the axial direction of the bead cores 5 and 5. Then, the frame 4b, the raising roller 116, the cylinder 117, the forked metal fitting 118, the above-mentioned curling roller 60, and the like are used as a whole.
Make up 15.

In FIG. 12, reference numeral 121 is a knife for making cuts on the contact surfaces of the pair of bead cores 5, 5 and the pair of fillers 9, 9, and the knife 121 can be attached to and detached from the knife mounting member 123. It is fixed. 13, which is an enlarged front view of the dividing device 120 (including a partial cross section), a groove 124 is formed on both surfaces of the mounting member 123, and the groove 124 is a forked frame fixed to the frame 4b. It is slidably fitted to the guide rail 127 of 125. The cylinder 122 is fixed to the bifurcated frame 125. Then, the knife 121, the cylinder 122, the mounting member 123, the groove 124, the forked frame 125, the piston rod 126, the guide rail 127.
The whole constitutes the dividing device 120. The individual operations of the above-described device are automated as a series of operations by a sequencer (not shown).

Next, the operation of one embodiment will be described with reference to FIGS.
This will be described with reference to 2. Now, it is assumed that the fillers 9, 9 are set in the guide device 40 in the retracted position (origin position), and the cut end face of the starting end portion 17 of the fillers 9, 9 is already formed. First, with the cylinder 95 actuated and the swing frame 93 rotated around the pin 94 and released upward, the pair of bead cores 5 and 5 are inserted into the holding device 10, and the cylinder 95 is actuated and swung. Frame 93
After returning to the pasting position, as shown in FIG. 14, as a first step, the cylinder 72 is operated to operate the tension roller 70.
Is contacted with the inner peripheral surfaces of the bead cores 5 and 5 to hold the bead cores 5 and 5 in an upright state. Next, as a second step, as shown in FIG. 15, the cylinder 42 is operated to advance the guide device 40 as indicated by the arrow to guide the starting end portions 17 of the fillers 9 and 9 to the inner peripheral surfaces of the bead cores 5 and 5. To do. Then, the cylinder 92 is operated to lower the crimping plate 91 of the crimping device 90, and the base end sides 12 and 12 of the starting end portions 17 of the fillers 9 and 9 are crimped to the inner peripheral surfaces of the bead cores 5 and 5 so as to be in close contact with each other. At this time, the fillers 9, 9 and the bead cores 5, 5
And are in close contact with each other as shown in FIG.

Next, as the third step, as shown in FIG. 16, the cylinder 52 is operated to raise the upper presser foot 51, and the cylinder 92 is operated to raise the crimping plate 91.
Then, the cylinder 42 is operated and the guide device 40 is slightly retracted (approximately 10 mm) in the direction of the arrow. Here, the guide device 40 is not retracted to the original position in order to prevent the fillers 9, 9 from meandering. At this time, the servo motor 46 is driven so that the drive roller 45 rotates forward at the same speed as the guide device 40 moves backward, and the filler 9,
I try not to pull 9. Next, as a fourth step, the servomotor 31 of the drive device 20 is rotated forward,
As shown in FIG. 7, the bead cores 5 and 5 are rotated in the direction of the arrow. At this time, the center pressing roller (not shown) arranged above the driving roller 2 is lowered by the operation of the cylinder for the center pressing roller, and the base end sides 12, 12 of the fillers 9, 9 are spread over the entire length of the bead cores 5, 5. The bead cores 5 and 5 are pressure-bonded to the inner peripheral surfaces of the bead cores 5 to be in close contact with each other, but this is not shown because the figure becomes complicated. The center pressing roller rises when the bead cores 5, 5 make one rotation.

After the sensor 130 detects the cutting end face 18 which is the starting end of the fillers 9, 9, the servo motor 31 stops at a predetermined angle, and at the same time, the servo motor 46 also stops to stop the feeding of the fillers 9, 9. . Next, the guiding device 4
The tip side of 0 is lifted slightly upward by a cylinder (not shown) to bend the fillers 9, 9 as shown in FIG. 7, and the cylinder 52 is operated to lower the upper presser 51 to move the filler 9, In a state where 9 is sandwiched between the upper presser 51 and the lower support plate 50, the rodless cylinder 85 of the cutting device 80 is operated to move the blade 81, which was standing by at one end of the guide shaft 84, to the other end. , The fillers 9, 9 are cut in the width direction. Then, the fillers 9, 9 have the same length as the circumference of the bead cores 5, 5 and are cut at a low angle as described above.

Next, as a fifth step, as shown in FIG. 18, the guide device 40 is retracted to the origin position, and then the tip end side of the guide device 40, which has been lifted slightly upward, is lowered to the original position. Then, the holding device 10 is rotated slightly forward so that the starting end portions 17 of the fillers 9, 9 are pressed onto the pressing plate 10 at the upper part of the fixing plate 14.
Stop at the point below 1. Next, the pressing device 10
The cylinder 0 of 0 is operated, and the pair of pressing plates 101 presses the tips 13, 13 of the starting ends 17 of the fillers 9, 9 from above onto the fixed plate 14 so as not to move (FIG. 19). , The servo motor 31 of the drive device 20 is reversely rotated, and the bead cores 5 and 5 are reversely rotated. Then, since the thickness of the fillers 9, 9 on the tips 13, 13 side is thin and easily contracts, as shown in the enlarged plan view of FIG.
Although the bead cores 5 and 5 are largely contracted on the side of 3 and 13 and the starting end 19 is curved, only the bead cores 5 and 5 move in the opposite directions as shown by the arrows, so that the tips 13 and 1 of the fillers 9 and 9 are formed.
The third side is relatively stretched, and as shown in FIG. 20, the starting end 19 is almost linear, or the leading end side is excessively stretched to be corrected.

Next, after raising the pressing plate 101, a sixth
As shown in FIG. 21, as shown in FIG. 21, the holding device 10 is rotated forward and the bead cores 5 and 5 and the fillers 9 and 9 are slightly fed at the same time. Then, the rotation is stopped when the pressure contact plate 111 comes below. Then, the cylinder 112 is operated to lower the pressure contact plate 111, and both sloped cut end surfaces of the start end portion 17 and the end portion 19a are pressure-bonded to each other on the fixing plate 14 from above. Then, at this point, the fillers 9 and 9 have been attached to the outer peripheral surfaces of the bead cores 5 and 5 in an annular shape.

Next, as the seventh step, as shown in FIG. 21, the pressure contact plate 111 is raised and the cylinder 117 is moved.
Is operated to lower the raising roller 116, and the raising roller 116 presses the widthwise centers of the fillers 9, 9. At the same time, the cylinder 72 is actuated to raise the tension roller 70, the cylinder 66 is actuated, and the squeezing roller 60 is lowered to bring the bead core receiving portion 61 of the squeezing roller 60 into contact with the inner peripheral surfaces of the bead cores 5 and 5. Then, at the same time, the cylinder 122 of the dividing device 120 is actuated and the knife 121 is used to make a cut in each of the contact surfaces where the side surfaces of the pair of bead cores 5 and 5 and the base ends 11 and 11 of the fillers 9 and 9 are in close contact with each other. . Next, the bead cores 5 and 5 are rotated once or twice by the driving device 20 and stopped. Then, in addition to the raising action of the raising roller 116 as described above with reference to FIG. 11, the action of the squeezing portions 62, 62 of the squeeze roller 60 causes the stagnation to be performed in two steps. It will be completely stiffened outward in the radial direction.

Next, the raising roller 116 and the knife 121.
Is raised and the squeeze roller 60 is also raised, all the devices are in the original position as in FIG. Therefore, the cylinder 95 is operated to move the swing frame 93.
Is rotated around the pin 94 and allowed to escape upward, and then the completed bead with filler is taken out from the holding device 10. The set of beads with filler completed as described above has the filler tip side satisfactorily squeezed, and the cut is made by the dividing device 120, so that it is separated when used in the tire molding machine in the next step. It is easy to do and supply. Further, according to one embodiment of the present invention, the filler is attached in a horizontal state instead of being attached in an elongate manner as in the prior art example. Therefore, when the filler is attached to the outer peripheral surface of the bead core in an annular shape, there is almost no difference between the inner peripheral length and the outer peripheral length of the filler, and it is not necessary to correct the opening on the outer peripheral length side with a hand as in the conventional case. It becomes possible to obtain a good filler bond with a relatively simple device.

[0033]

【The invention's effect】

(1) According to the filler sticking method of the present invention, the bead core is reversely rotated and the tip end side of the filler starting end portion is stretched while the vicinity of the tip end of the filler starting end portion is pressed against the fixing plate from above, so that the filler starting end portion is cut. The end faces can be aligned almost linearly with high precision, and both ends of the filler can be joined accurately without excess or deficiency. (2) Further, according to the filler sticking apparatus of the present invention, it is possible to improve the joining of both end portions of the filler with a relatively simple structure, and it is possible to obtain a high-quality filler bead at low cost. (3) Furthermore, according to the filler sticking apparatus of the present invention, one set of beads with a filler can be manufactured at the same time, and the apparatus is quite small and compact, and is automated. Therefore, by installing this device near the tire molding machine, the tire molder can perform the work of this device at the same time, and it is possible to improve the productivity and to make the quality of the bead with filler of one set equal. The quality of the tire can be improved.

[Brief description of drawings]

FIG. 1 is a schematic side view of a main part of an embodiment of a filler sticking device used in the method of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a cross-sectional view of a drive roller.

FIG. 4 is a cross-sectional view in the width direction of the filler.

FIG. 5 is an enlarged side view showing the outline of a guide device and a cutting device.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a view showing a state in which the tip end side of the guide device is lifted and the filler is bent.

FIG. 8 is a plan view showing notches in the lower support plate and the upper presser foot.

FIG. 9 is a view taken along the line YY of FIG.

10 is a view on arrow XX in FIG. 1. FIG.

FIG. 11 is an explanatory view of the action of the raising roller.

FIG. 12 is a side view of the dividing device and the raising roller.

FIG. 13 is a front view of the dividing device.

FIG. 14 is a diagram for explaining the operation of the embodiment.

FIG. 15 is a diagram for explaining the operation of the embodiment.

FIG. 16 is a diagram for explaining the operation of the embodiment.

FIG. 17 is a diagram for explaining the operation of the embodiment.

FIG. 18 is a diagram for explaining the operation of the embodiment.

FIG. 19 is a view for explaining the action of the pressing plate.

FIG. 20 is a view for explaining the action of the pressing plate.

FIG. 21 is a diagram for explaining the operation of the embodiment.

FIG. 22 is a diagram for explaining the operation of the embodiment.

[Explanation of symbols]

1, 2 and 3: drive roller 5: bead core 9: filler 10: holding device 11: base end 12: base end side 13: tip end 14: fixing plate 17: start end portion 18: cut end face 19: start end 19a: end portion 20 : Drive device 31: Servo motor 40: Guide device 45: Drive roller 50: Lower support plate 51: Upper presser foot 60: Squeeze roller 65: Moving plate 70: Tension roller 72: Cylinder 80: Cutting device 81: Blade 90: Crimping Device 91: Crimping plate 93: Oscillating frame 95: Cylinder 100: Pressing device 101: Pressing plate 110: Pressing device 111: Pressing plate 115: Squeezing device 116: Raising roller 120: Dividing device 121: Knife 130: Sensor W: width

Claims (4)

[Claims] 1. A bead core, wherein the starting end of a band-shaped filler having a cross section in the width direction is supplied onto a bead core rotatably supported, and the base end side of the filler starting end is pressure-bonded to an outer peripheral surface of the bead core. Rotate around the axis to affix the filler to the bead core outer peripheral surface in an annular shape, stop rotation when the start end rotates by a predetermined angle, cut the filler to a predetermined size, and further rotate the bead core and the filler forward. Then the starting end of the filler and the terminating end formed by the cutting are moved to the upper part of the fixing plate, and then the bead core is reversely rotated in a state in which the vicinity of the tip of the filler starting end is pressed against the fixing plate from above to rotate the filler starting end. A filler sticking method, characterized in that the tip end side is stretched and the cut end surface of the filler start end portion and the cut end surface of the end portion are joined together in this state. 2. A bead core holding device that is rotatably supported to hold a bead core, a guide device that guides a leading end portion of a belt-shaped filler having a substantially triangular cross section in the width direction supplied onto the bead core, and a filler starting end portion. A crimping device that crimps the base end side to the outer peripheral surface of the bead core, a cutting device that cuts the filler to a predetermined attachment length when the starting end of the filler attached to the outer peripheral surface of the bead core rotates by a predetermined angle, and the tip of the filler starting end A pressing device that presses the vicinity from above against the fixed plate, a pressure welding device that presses and joins the cut end surface of the filler start end and the cut end surface of the end end to each other, and a drive device that rotates the bead core forward and backward about the axis are provided. A filler sticking device characterized by the above. 3. The bead core holding device holds a pair of bead cores whose side surfaces are in close contact with each other, and the guide device is a pair of starting ends of a pair of widthwise cross-section fillers whose base ends are in close contact with each other. Part to the corresponding bead cores, and further, a pair of fillers attached to the outer peripheral surface of the individual bead cores in a ring shape so that the respective tip ends of the pair of fillers are urged toward the outer side in the radial direction, and the pair of the pair of fillers. The filler sticking device according to claim 2, further comprising: a splitting device that splits a bead core and a filler into a pair of bead cores each having a cut end on a contact surface thereof. 4. The filler sticking device according to claim 2, wherein the guide device lifts the front end side slightly upward with the rear end portion as a fulcrum when the filler is cut.