JPH07115426B2 - Method and device for attaching band-shaped member - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sticking method and device for sticking a strip-shaped member around a molding drum.

2. Description of the Related Art Conventionally, as a method and an apparatus for attaching a belt-shaped member, for example, one described in JP-A-59-207227 is known. This includes a large number of vacuum cups that adsorb and hold almost the entire widthwise direction of the strip-shaped member on one side of the strip-shaped member, a moving mechanism that moves these vacuum cups toward and away from the forming drum, and a cutting mechanism that cuts the strip-shaped member. A pressing pin that joins the front end and the rear end of the strip-shaped member attached to the forming drum is provided.

When the strip-shaped member is pasted on the forming drum by this one, first, one end of the strip-shaped member is sucked and held by the vacuum cup near the tip thereof, and the strip-shaped member is conveyed and pasted to the forming drum. After releasing the suction holding of the member, the forming drum is rotated by a predetermined angle to attach the strip-shaped member to the forming drum, and then the suction cup is held by the vacuum cup near the rear end which is separated from the front end of the strip-shaped member by a predetermined length. , The band-shaped member is cut into a predetermined length by the cutting mechanism, and then the back end of the band-shaped member is sucked and held by the vacuum cup while being conveyed to the forming drum and pasted, and then the band-shaped member already attached to the forming drum. The front end and the rear end of the member are joined by a holding pin.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a band-shaped member attaching method and device, since the band-shaped member is sucked and held by the vacuum cup, the joining of the front and rear ends of the band-shaped member is uneven. There is a problem that it may become.
The reason is that if the cross-sectional shape of the strip-shaped member has irregularities, a slight gap is generated between the vacuum cup and the strip-shaped member, and the suction force is reduced, whereby the strip-shaped member is displaced from the vacuum cup. Also, if an external force acts on the belt-shaped member during adsorption, the vacuum cup is elastically deformed and the belt-shaped member is displaced.

Further, when the above-mentioned belt-shaped member is a side tread, it must be attached at a position largely separated from the axial center of the forming drum, but when the attaching forming drum is an existing one, the shaft of the forming drum is The lateral length of the strip-shaped member may protrude axially outward from the forming drum due to insufficient length in the direction. In such a state, even if the front and rear ends of the strip-shaped member are pressed by the presser pins and the front and rear ends are joined together, the front and rear ends of the projecting portion are deformed and escape to join with accuracy. There is also a problem that you cannot do it. In order to deal with such a situation, it is conceivable to lengthen the axial length of the forming drum so that the belt-shaped member does not protrude from the forming drum. You have to make a drum, which is not practical.

Means for Solving the Problems First of all, such problems are obtained by accurately supplying the front end of the belt-shaped member to the forming drum, and projecting the front end from one side end in the width direction from the attaching surface. As described above, the first step of pressure-bonding to the forming drum, the second step of attaching the intermediate portion of the band-shaped member to the periphery of the forming drum, and the rear end of the band-shaped member being gripped from above and below are supplied to the forming drum. After the front and rear ends of the strip-shaped member protruding from the attaching surface are supported from the inside by the support, the front and rear ends of the strip-shaped member are pressed from the outside to join the front and rear ends of the strip-shaped member over the entire width. Secondly, by a method of sticking a strip-shaped member including a third step, secondly, a strip-shaped member that is pasted around the molding drum in a state where one end portion in the width direction of the strip-shaped member projects in the axial direction from the sticking surface is formed. It is a sticking device that can be opened and closed and the rear end of the belt-shaped member can be moved up and down. The gripping body that can be gripped from the gripping body and the gripping body that grips the strip-shaped member are moved toward the forming drum, and the strip-shaped member is supplied to the forming drum such that one end in the width direction thereof projects from the attaching surface. The moving means and the belt-shaped member are arranged around the forming drum.
When pasted for only the circumference, a support member that moves to the inside of the front and rear ends of the belt-shaped member protruding from the pasting surface and supports the front and rear ends from the inside, and the front end of the belt-shaped member are formed. A pressing device for pressing a drum to press and press the front and rear end portions of the belt-shaped member against both the forming drum and a support to join the front and rear ends of the belt-shaped member to each other, and a bonding device for the belt-shaped member. can do.

Action First, the leading end of the belt-shaped member is supplied to the forming drum with high accuracy. As a method of this supply, it is possible to supply while gripping the strip-shaped member from above and below by the gripping body,
Further, after moving the conveyor on which the belt-shaped member is placed toward the forming drum, it is also considered that the belt-shaped member is directly transferred from the conveyor to the forming drum or indirectly via the intermediate conveyor. The belt-shaped member is supplied to the forming drum in a regular posture with high accuracy. Next, the tip end portion of the strip-shaped member is pressed and crimped onto the forming drum by the pressing means so that one end portion in the width direction thereof projects in the axial direction from the attaching surface. Here, the sticking surface means the outer circumference of the molding drum or the outer circumference of the belt-shaped member already stuck on the molding drum. When the outer periphery of the strip-shaped member already attached to the forming drum is referred to as the attaching surface, for example, a narrow strip-shaped member is formed on the forming drum at one side end in the width direction and at one side in the width direction of the forming drum. There is a case where it is pasted in a state where the side edge is matched, but in such a case, in order to project one end in the width direction of the strip-shaped member to be pasted on from the pasting surface, the narrow strip-shaped member A wide band-shaped member is supplied while being centered on the (sticking surface) and stuck. Therefore, in this case, the widthwise centers of the two belt-shaped members coincide with each other, and no center deviation occurs. Next, the intermediate portion of the belt-shaped member is attached around the forming drum. Next, while the rear end portion of the belt-shaped member is grasped from above and below by the grasping body, the belt-shaped member is supplied to the forming drum and attached. As a result, the strip-shaped member is attached to the periphery of the forming drum for one circumferential length.
Here, as described above, when the rear end portion of the strip-shaped member is grasped from above and below by the grasping body, even if the strip-shaped member has irregularities, or if an external force acts on the strip-shaped member during supply, The member does not deviate from the grip body and can be supplied with high accuracy. At this time, the support is moved to the inside of the front and rear ends of the strip-shaped member protruding from the attaching surface, and the front and rear ends are supported from the inside by the support. Next, the front and rear ends of the belt-shaped member are pressed from the outside against both the forming drum and the support by pressing means to bond the front and rear ends of the belt-shaped member to each other over the entire width. Thus, when joining the front and rear ends of the strip-shaped member, the tip of the strip-shaped member protruding from the attaching surface,
Since the rear end is supported from the inside by the support, it is more uniform than when there is no support from the inside, and when one end in the width direction of the strip-shaped member is supported on the sticking surface without protruding from the sticking surface. The front and rear ends of the belt-shaped member can be joined over the entire width with substantially the same uniformity.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is a rotatable forming drum for forming a green tire. This forming drum 1 is rotated by a DC servomotor 3 with a speed reducer as a rotating means installed on a floor surface 2 to have an arbitrary rotation speed. And it is rotated as many times as necessary.
A frame 6 is installed on the floor 2 behind the forming drum 1, and a conveying means 8 composed of a large number of rollers 7 parallel to the forming drum 1 is supported on the frame 6.
Then, the conveying means 8 conveys a continuous strip-shaped member 9 such as a side tread toward the forming drum 1. A flat anvil 11 is fixed to the front end of the frame 6, and a receiver 12 that extends in the width direction of the belt-shaped member 9 and protects a cutting blade 28 described later is embedded in the center of the upper surface of the anvil 11.
Further, on the upper surface of the anvil 11, three grooves 13 and 14 extending in the width direction of the belt-shaped member 9 are formed on the front side and the rear side of the receiver 12. The bracket 24 attached to the front end of the frame 6 has a moving table which is guided by a slide block 25 and a rail 26 to move diagonally forward.
27 is supported, and a cutting blade 28 having a heater (not shown) built therein is attached to the tip of the moving table 27. The moving table 27 is moved by the operation of the cylinder 29 so as to approach the receiver 12, whereby the cutting blade is moved.
28 receives the strip-shaped member 9 and cuts it in the width direction immediately above 12. The above-mentioned receiver 12, moving table 27, cutting blade 28, cylinder 29
Is a cutting means 30 for cutting the strip member 9 in the width direction as a whole.
Make up. Further, holding blocks 35 that cover the entire width of the belt-shaped member 9 are attached to the tip ends of the piston rods 34 of the plurality of cylinders 33 fixed to the moving table 27, and these holding blocks 35 are located rearward of the cutting position. The strip-shaped member 9 is pressed against the anvil 11 to restrain the strip-shaped member 9 over the entire width regardless of the unevenness.

A beam 45 extending in the front-rear direction is provided above the forming drum 1.
There are horizontal rails 46 on both sides of this beam 45.
Is fixed. Reference numeral 47 is a traveling frame having a slider 48 fixed to the upper portion thereof. The traveling frame 47 is fitted on a rail 46, suspended by the beam 45, and supported so as to be movable in the front-rear direction. A pair of bearings 49, 50 spaced apart in the front-rear direction are attached to the lower surface of the beam 45.
A screw shaft 51 is rotatably supported by the screw shaft 51. This screw shaft
51 is screwed into the traveling frame 47. 53 is a bearing
The DC servomotor is fixed to the beam 45 behind 50, and the pulley 54 and the screw shaft 51 fixed to this motor 53
A belt 56 is stretched between the pulley 55 and the pulley 55. As a result, when the motor 53 operates and the screw shaft 51 rotates, the traveling frame 47 reciprocates in the front-rear direction while being guided by the rail 46. The traveling frame 47, the screw shaft 51, and the motor 53 described above collectively constitute a moving mechanism 57 that moves gripping bodies 88 and 89, which will be described later, in the front-rear direction.

A rail 61 extending in the vertical direction is fixed to the traveling frame 47, and an elevating frame 62 is supported by the rail 61 so as to be able to ascend and descend. A screw shaft 66 is rotatably supported by a pair of bearings 64, 65 attached to the traveling frame 47, and the screw shaft 66 is screwed into the elevating frame 62. A belt 71 is stretched between a pulley 69 of a DC servo motor 68 attached to the traveling frame 47 and a pulley 70 fixed to the screw shaft 66, and as a result, the motor 68 operates to operate the screw shaft 66. When is rotated, the lifting frame 62 moves up and down. The elevating frame 62, the screw shaft 66, and the motor 68 described above as a whole are an elevating mechanism for elevating and lowering gripping bodies 88 and 89 described later.
Make up 72.

In FIGS. 1, 2, 3, and 5, a plurality of brackets 77 are fixed to the tip of the elevating frame 62.
77 includes a pair of screw shafts 78, 79 extending in the width direction of the strip-shaped material 9.
Are rotatably supported in a coaxial relationship. 80, 81
Is a DC servo motor fixed to the lifting frame 62,
Belts 86 and 87 are respectively stretched between pulleys 82 and 83 attached to the motors 80 and 81 and pulleys 84 and 85 attached to the screw shafts 78 and 79, respectively. As a result, when the motors 80, 81 operate and the screw shafts 78, 79 rotate, the gripping bodies 88, 89 that are screwed into the screw shafts 78, 79 are
It moves in the width direction of the belt-shaped member 9 along 8, 79, but this movement can be performed individually by the gripping bodies 88, 89. Reference numeral 90 denotes guide rails fixed to the elevating frame 62 directly above the screw shafts 78 and 79, and the slide blocks 91 of the grippers 88 and 89 are slidably engaged with these guide rails 90. . Each gripping body 88, 89 has a moving block 93 to which a screw block 92 screwed onto the screw shafts 78, 79 is attached,
A vertical cylinder 94 is attached to each moving block 93. Lower claws 96 are fixed to the lower ends of these cylinders 94 via brackets 95. Each lower claw 96 has the above-mentioned grooves 13 and 14
It has three fork-shaped horizontal claws 97 that are housed in the claw. The claws 97 extend toward the widthwise center of the belt-shaped member 9. Also, the piston rod of the cylinder 94
A clamp pad 100 is swingably connected to the tip of 98 via a pin 99, and the clamp pad 100 is connected to the lower pawl 96.
It is located directly above the claw 97 of the. When the cylinder 94 operates and the piston rod 98 projects, the clamp pad 100 and the lower claw 96 grip the strip-shaped member 9 from above and below. The screw block 92, moving block 93, cylinder 94, lower claw 96, and clamp pad 100 described above are
The gripping bodies 88 and 89 that can be opened and closed and that also grips the rear end of the belt-shaped member 9, and also the front end in this embodiment, are formed. Also,
The aforementioned screw shafts 78, 79, motors 80, 81, pulleys 82, 83,
The 84, 85, the belts 86, 87, the guide rails 90, and the slide block 91 together constitute a contacting / separating mechanism 101 for moving the gripping bodies 88, 89 toward and away from each other, and further, the moving mechanism 57,
The lifting mechanism 72 and the contacting / separating mechanism 101 as a whole grasp the gripping bodies 88, 89.
Is moved toward the molding drum 1 to supply the belt-shaped member 9 to the molding drum 1 such that one end in the width direction thereof projects from the molding drum 1 in the axial direction.

A vertical double cylinder 106 is fixed to the elevating frame 62 between the grippers 88 and 89, and a holder 109 supporting a plurality of vacuum cups 108 is attached to the tip of a piston rod 107 of the cylinder 106. Then, these vacuum cups 108 adsorb the upper surface of the belt-shaped member 9 and hold the belt-shaped member 9 in an auxiliary manner. Cylinder 10 mentioned above
6. The vacuum cup 108 and the holder 109 constitute the auxiliary gripping body 110 as a whole.

In FIGS. 1, 3, and 4, the strip-shaped member 9 is attached to the elevating frame 62 on the front side of the grippers 88 and 89 via the bracket 116.
A pair of cylinders 117 that are separated in the width direction of
A horizontal crimping pad 119 extending in the width direction of the belt-shaped member 9 is attached to the tip of the piston rod 118 of these cylinders 117. Then, when the cylinder 117 operates and the piston rod 118 projects, the pressure bonding pad 119 causes the strip-shaped member 9 to move.
The tip portion of is pressed onto the forming drum 1. Cylinder described above
117 and the pressure bonding pad 119 constitute the first pressing mechanism 120 as a whole.

In FIGS. 2, 4, and 5, the bracket 95 of the grip body 88 is shown.
A bracket 126 is attached to the bracket 126.
A base end portion of an arm 128 is swingably supported by a pin 127 on the. A bracket 130 is rotatably supported by a tip portion of the arm 128 via a pin 129, and a support claw 131 as a support is attached to the bracket 130. A torsion spring 133 is locked to a pin 132 fixed to the arm 128, the center of the spring 133 is wrapped around the pin 129, and the other end is locked to a bracket 130. As a result, the support claw 131
Is biased clockwise in FIG. 5, but the bracket
The 130 is brought into contact with a stopper 134 fixed to the arm 128 to be held in a horizontal state. Also, the bracket 12
A cylinder 135 is supported by 6, and the tip of the piston rod 136 of the cylinder 135 is pin 13 at the center of the arm 128.
Connected via 7. When the cylinder 135 operates, the support claw 131 moves from the position shown by the phantom line in FIG. 5 to the position shown by the solid line, that is, to the inside of the front end and the rear end of the belt-shaped member 9 protruding from the forming drum 1. The front and rear ends of the belt-shaped member 9 are supported from the inside.

In FIGS. 1, 3, 4, and 6, a bracket 146 is attached to the lifting frame 62 on the rear side of the grippers 88 and 89.
A pair of cylinders 147, which are separated from each other in the width direction of the belt-shaped member 9, are attached to the bracket 146. A horizontal bonding pad 149 extending in the width direction of the belt-shaped member 9 is attached to the tip of the piston rod 148 of these cylinders 147, and this bonding pad 149 is located directly above the support claw 131. Further, a foam material 150 such as sponge is attached to the lower surface of the bonding pad 149 facing the support claw 131.
Then, when the cylinder 147 operates and the piston rod 148 projects, the joining pad 149, the tip of the strip-shaped member 9 supported from the inside by the molding drum 1 and the support claw 131,
The rear end portion is pressed against both the molding drum 1 and the support claw 131 to be joined to each other. The cylinder 147 and the bonding pad 149 described above collectively constitute the second pressing mechanism 151.
Further, the first pressing mechanism 120 and the second pressing mechanism 151 constitute pressing means 152 as a whole.

Next, the operation of the embodiment of the present invention will be described.

In the first step, as shown in FIG. 7 (a), the tip portion 9 a of the belt-shaped member 9 is placed on the anvil 11 in a state of bridging the groove 14. In this state, when the motors 80, 81 operate and the screw shafts 78, 79 rotate, the grippers 88, 89 approach each other while being guided by the guide rail 90, and the lower claws located on the extension line of the groove 14 are guided. The claw portion 97 of 96 penetrates into the groove 14 from both sides and supports the tip portion 9a of the belt-shaped member 9 from below.
Next, the piston rod 98 of the cylinder 94 projects and the crank pad 100 descends toward the lower pawl 96. As a result, the widthwise ends of the end portion 9a of the strip-shaped member 9 are gripped from above and below by the clamp pad 100 and the lower claw 96.
Simultaneously with this, the piston rod 107 of the cylinder 106 is projected to bring the vacuum cup 108 into contact with the central portion in the width direction at the tip portion 9a of the strip-shaped member 9, and then the vacuum cup 10
Connect 8 to a vacuum source (not shown). As a result, the vacuum cup 108 sucks and grips the upper surface of the tip end portion 9a of the strip-shaped member 9 in an auxiliary manner. Next, the motor 68 is operated to rotate the screw shaft 66, and the lifting frame 62 and the gripping bodies 88, 89.
Are integrally lifted along the rail 61. This allows
The lower claw 96 is pulled out from the groove 14, and the tip portion 9a of the belt-shaped member 9 is slightly lifted. Next, as shown in FIG. 7 (b), the motor 53 is operated to rotate the screw shaft 51, and the traveling frame 47, the elevating frame 62, and the grippers 88, 89 are integrally directed toward the molding drum 1. While moving, the belt-shaped member 9 is moved forward by the transport means 8. As a result, the band-shaped member 9 is supplied to the molding drum 1 while the tip portion 9a of the belt-shaped member 9 is grasped from above and below by the grasping bodies 88 and 89. In this way, since the tip end portion 9a of the strip-shaped member 9 is gripped from above and below by the gripping bodies 88 and 89, even if the strip-shaped member 9 has irregularities, or if an external force acts on the strip-shaped member 9 during supply. , The belt-shaped member 9 is not displaced from the gripping bodies 88, 89,
Supplied with high precision. When the grippers 88, 89 reach directly above the top of the molding drum 1, the operation of the motor 53 is stopped. At this time, as shown in FIG. 6, the strip-shaped member 9 vertically overlaps the molding drum 1 with one end in the width direction thereof protruding outward in the width direction from the molding drum 1 (pasting surface). Next, the piston rod 118 of the cylinder 117 is projected, and the tip end of the belt-shaped member 9 that overhangs forward from the position where it is gripped by the grippers 88 and 89 is pressed against the molding drum 1 by the pressure bonding pad 119 and pressure bonded. Then the cylinder 94
Retract the piston rod 98 to separate the clamp pad 100 from the strip-shaped member 9 and separate the vacuum cup 108 separated from the vacuum source from the strip-shaped member 9 by retracting the piston rod 107 of the cylinder 106 to remove the strip-shaped member 9. Release from grip. Next, the motor 80,
81 is operated to rotate the screw shafts 78 and 79 to separate the gripping bodies 88 and 89 from each other, and the lower claw 96 is pulled out from the lower side of the belt-shaped member 9. Next, the piston rod 118 of the cylinder 117 is retracted to separate the pressure bonding pad 119 from the strip-shaped member 9. In this way, the tip end portion 9a of the belt-shaped member 9 is pressure-bonded to the molding drum 1 with one end portion in the width direction thereof protruding from the molding drum 1.

Next, in the second step, as shown in FIG. 7C, the motor 3 is operated to rotate the molding drum 1, and one end portion in the width direction of the molding drum 1 is projected from the molding drum 1 to form the strip shape. The member 9 is attached around the molding drum 1. When the intermediate portion of the belt-shaped member 9 is attached to the periphery of the molding drum 1 for about 4/5 rounds, the operation of the motor 3 is stopped. During this attachment, the motor 53 is activated and the grippers 88 and 89 are anviled.
Move it to just above the groove 13 of 11.

Next, in the third step, as shown in FIG. 7 (c), the motor 68 is operated to rotate the screw shaft 66, and the gripping body 8 is rotated.
8 and 89 are lowered until the lower claw 96 reaches the extension line of the groove 13. Next, the motors 80, 81 are operated to rotate the screw shafts 78, 79 to bring the grippers 88, 89 closer to each other. This allows
The lower claw 96 penetrates into the groove 13 from both ends and supports the strip-shaped member 9 immediately before the cutting position from the lower side. Next, the cylinder 94 is operated to lower the clamp pad 100, and the clamp pad 100 and the lower claw 96 grip and restrain both widthwise ends of the strip-shaped member 9 from above and below. At the same time, the cylinder
106 is actuated to lower the vacuum cup 108, and the vacuum cup 108 sucks and restrains the central portion of the strip-shaped member 9 in the width direction. In this manner, the belt-shaped member 9 immediately before the cutting position is gripped and restrained by the grippers 88, 89 and the auxiliary gripper 110. Next, as shown in FIG. 7 (d), the cylinder 2
Operate 9 and 33 at the same time. By the operation of the cylinder 33, the strip-shaped member 9 immediately after the cutting position is pressed against the anvil 11 by the holding block 35, so that the strip-shaped member 9 is formed in the groove 14.
While being bitten into, the holding block 35 and the anvil 11 hold and constrain it from above and below. In this way, the belt-shaped member 9 restrained immediately before and immediately after the cutting position is cut in the width direction at the cutting position by the movement of the cutting blade 28 due to the operation of the cylinder 29. As a result, the strip-shaped member 9 is cut into a length equal to one circumference of the molding drum 1. Next, as shown in FIG. 7 (e), the cylinders 29 and 33 are simultaneously actuated to separate the cutting blade 28 and the holding block 35 from the belt-shaped member 9, and then the motor 68 is actuated to grasp the gripping body 88, 89 is slightly raised, and the lower claw 96 is pulled out from the groove 13. Next, the motor 53 is operated, and the rear end portion 9b of the belt-shaped member 9 is supplied toward the forming drum 1 while being gripped from above and below by the gripping bodies 88 and 89. At this time, the forming drum 1 is rotated so that the peripheral speed thereof becomes the same as the moving speed of the gripping bodies 88, 89, and the remaining portion of the strip-shaped member 9 is not applied with excessive tension, and one side in the width direction thereof. The end portion is attached to the periphery of the molding drum 1 while protruding from the molding drum 1. When the grippers 88, 89 reach just above the top of the molding drum 1, the operation of the motor 53 is stopped. In this way, when the strip-shaped member 9 is attached to the periphery of the forming drum 1 for one circumference, as shown in FIG. 7 (f), the piston rod 136 of the cylinder 135 is projected to swing the arm 128 to support it. The claw 131 is moved from the position shown by the phantom line in FIG. 5 to the position shown by the solid line. As a result, as shown in FIG. 6, the support claws 131 reach the insides of the tips and the rear ends 9a and 9b of the strip-shaped member 9 protruding from the forming drum 1, and the tips and the rear ends 9a, 9a of the strip-shaped member 9, 9b is supported from the inside in the radial direction. Next, when the piston rod 148 of the cylinder 147 is projected, the bonding pad 149 moves toward the molding drum 1 and the belt-shaped member 9 supported from inside by the support claw 131.
The one end in the width direction and the center in the width direction and the other end of the strip-shaped member 9 supported from the inside by the molding drum 1 are pressed from the outside at the front and rear ends 9a and 9b. As a result, the front end and the rear end of the belt-shaped member 9 are evenly distributed over the entire width of each other, that is, even at the one end in the width direction protruding from the molding drum 1, more uniformly than when there is no support from the inside, and the belt-shaped member 9 is also supported. The one end in the width direction is joined to the molding drum 1 with substantially the same uniformity as when the one end is supported by the molding drum 1. Next, the cylinder 94 is activated to operate the clamp pad 10
0 is separated from the belt-shaped member 9 and the motors 80, 81
Is operated to pull out the lower claw 96 from the lower side of the belt-shaped member 9, and the cylinder 106 is operated to separate the vacuum cup 108 from the belt-shaped member 9. At the same time, the cylinder 147 operates to separate the bonding pad 149 from the strip-shaped member 9, and then the cylinder 135 operates to remove the support claw 131 from the inside of the strip-shaped member 9. Next, the motor 53 is activated to move the grippers 88, 89 to just above the groove 14 of the anvil 11. The above is one cycle of the operation of the embodiment of the present invention, and this cycle is repeated thereafter.

In addition, in the above-described embodiment, the sticking surface is formed on the molding drum 1.
However, in the present invention, the sticking surface may be the outer circumference of the belt-shaped member already stuck on the forming drum. When the outer periphery of the strip-shaped member already attached to the forming drum is referred to as the attaching surface, for example, a narrow strip-shaped member is formed on the forming drum at one side end in the width direction and at one side in the width direction of the forming drum. There is a case where it is pasted in a state where the side edge is matched, but in such a case, in order to project one end in the width direction of the strip-shaped member to be pasted on from the pasting surface, the narrow strip-shaped member The strip-shaped member is supplied while being centered on the (sticking surface) and stuck. Therefore,
In this case, the widthwise centers of both strip-shaped members are aligned with each other, and no center deviation occurs. In addition, in the above-described embodiment, the belt-shaped member 9 is supplied to the molding drum 1 with high accuracy by transferring the tip portion 9a of the belt-shaped member 9 while gripping the gripping bodies 88 and 89 from above and below. In the above, the conveyor on which the belt-shaped member is placed is moved toward the forming drum, and the belt-shaped member is directly or indirectly transferred from the conveyor to the forming drum so that the belt can be supplied with high accuracy. May be. Further, if necessary, the other widthwise end of the strip-shaped member may also be projected from the attaching surface.

EFFECTS OF THE INVENTION As described above, according to the present invention, the rear end portion of the belt-shaped member is grasped by the grasping body from above and below. Even if an external force is applied to the member, the belt-shaped member will not be displaced from the grip body. Moreover, since the front end portion of the strip-shaped member is supplied to the forming drum with high accuracy, it is possible to evenly join the front and rear ends of the strip-shaped member. Moreover, the front and rear ends of the strip-shaped member protruding from the attaching surface are supported from the inside by the support, and then the front and rear ends of the strip-shaped member are pressed against both the forming drum and the support by the pressing means. Therefore, as compared with the prior art, the joints at the front and rear ends are made uniform including the protruding portions.

[Brief description of drawings]

1 is an overall front view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line I--I of FIG. 1, FIG. 3 is a front view of the vicinity of a gripping body, and FIG. Fig. II-II arrow view, Fig. 5 is a III-III arrow view of Fig. 4, Fig. 6 is a side view of the vicinity of the second pressing mechanism, and Figs. 7 (a) to (f) show the action. It is an explanatory view explaining. 1 ... Forming drum, 9 ... Band member 9a ... Tip part, 9b ... Rear end part 88, 89 ... Gripping body, 102 ... Moving means 131 ... Supporting body, 152 ... Pressing means

Claims (2)

[Claims] 1. A first step of supplying the tip end portion of a belt-shaped member to a forming drum with high accuracy, and crimping the tip end portion to the forming drum so that one end portion in the width direction thereof protrudes from a pasting surface. The second part for sticking the intermediate part of the band-shaped member around the molding drum
Steps and while feeding the forming drum while gripping the rear end of the strip-shaped member from above and below, after supporting the end of the strip-shaped member protruding from the attaching surface and the rear end from the inside by the support, the end of the strip-shaped member A third step of pressing the end portion from the outside to join the front and rear ends of the strip-shaped member over the entire width, the pasting method of the strip-shaped member. 2. A band-shaped member sticking device for sticking a band-shaped member around a molding drum in a state where one end portion in the width direction of the band-shaped member projects in the axial direction from a sticking surface, wherein the rear end of the band-shaped member can be opened and closed. The gripping body that can grip the portion from above and below and the gripping body that grips the band-shaped member are moved toward the forming drum so that the width-direction one end of the band-shaped member projects from the attaching surface to the forming drum. When the strip-shaped member is attached around the forming drum for one round,
The tip of the strip-shaped member protruding from the sticking surface, a support body that moves to the inside of the rear end portion to support the tip and the rear end portion from the inside, and the tip portion of the strip-shaped member is pressed against the forming drum to be crimped, And a pressing means for pressing the front and rear ends of the belt-shaped member against both the forming drum and the support so as to join the front and rear ends of the belt-shaped member to each other.