JP6838288B2 - Band-shaped member joining method and equipment - Google Patents

Description

The present invention relates to a method and an apparatus for joining strip-shaped members, and more specifically, it is possible to join both ends of an unvulcanized strip-shaped member in the longitudinal direction on the outer peripheral surface of a forming drum as set while suppressing displacement. It relates to a method and an apparatus for joining a strip-shaped member that can be formed.

When manufacturing a rubber product such as a tire, there is a step of joining both ends of a strip-shaped member made of unvulcanized rubber or the like in the longitudinal direction on the outer peripheral surface of a molding drum to form a cylindrical shape. Various joining devices used in this step have been proposed (see, for example, Patent Document 1).

The joining device proposed in Patent Document 1 includes a delivery conveyor, a holding means, and a pressing portion. In this joining device, the strip-shaped member is conveyed toward the forming drum by a delivery conveyor with its tip portion sandwiched from above and below by a holding means. Next, the tip portion is sucked by a suction pad installed on the outer peripheral surface of the molding drum and fixed to the molding drum. The strip-shaped member released from being pinched by the pinching means is wound around the outer peripheral surface of the forming drum by rotating the forming drum. Next, the strip-shaped member is cut to a predetermined length, and the rear end portion is sandwiched from above and below by the holding means to expand the pressing portion, thereby pressing the tip portion on the molding drum to join both ends. .. After joining both ends of the strip-shaped member, the pinching by the pinching means is released.

In this joining device, by using the holding means, both ends of the strip-shaped member to be joined can be easily positioned at a predetermined position. However, when the pinching by the pinching means is released, the band-shaped member may shift due to the frictional force between the pinching means and the band-shaped member. Therefore, there is room for improvement in suppressing the deviation (deviation in the width direction and the longitudinal direction) of both ends of the strip-shaped member and joining as set.

Japanese Unexamined Patent Publication No. 2008-49589

An object of the present invention is to provide a method and an apparatus for joining a strip-shaped member, which can join both ends of the strip-shaped member in the longitudinal direction on the outer peripheral surface of the forming drum while suppressing displacement as set.

In order to achieve the above object, in the method of joining the strip-shaped member of the present invention, the strip-shaped member mounted on the transport conveyor is conveyed toward the forming drum, and the strip-shaped member is wound around the outer peripheral surface of the forming drum. In the method of joining the strip-shaped members that join the both ends in the longitudinal direction, the suction pad of the suction means attached to the frame is moved downward on the upper surface of the tip end portion of the strip-shaped member mounted on the transport conveyor. It is held by suction, and in this suction-held state, the carrier side of the conveyor belt constituting the transport conveyor is held by the conveyor belt connecting portion attached to the frame, and the conveyor belt is rotationally driven. The strip-shaped member is conveyed by the conveying conveyor in synchronization with the movement of the suction means, and the tip portion is positioned above a predetermined position on the outer peripheral surface of the molding drum at which the tip portion is stopped, and then the suction pad is lowered. By moving it, it is installed at the predetermined position, and the upper surface on the tip side of the suction-holding position of the band-shaped member is pressed by the pressing body of the tip-side pressing portion that has been moved downward to press the tip portion. After fixing at the predetermined position, releasing the suction holding by the suction means, moving the suction pad and the pressing body upward, the molding drum is rotated, and the transfer speed of the strip-shaped member by the transfer conveyor is adjusted. After winding many parts of the strip-shaped member on the outer peripheral surface of the molding drum at the same winding speed as the rotation of the molding drum, the molding drum is stopped, and the suction pad is moved downward to stop. The upper surface of the rear end portion of the strip-shaped member mounted on the transport conveyor is held by suction, and the carrier side of the conveyor belt is held by the conveyor belt connecting portion in this suction-held state. Then, the conveyor belt is rotationally driven, the molding drum is rotated, and then the rear end portion is positioned above a predetermined position on the outer peripheral surface of the molding drum that is stopped, and then the suction pad is placed. The rear end portion is moved downward so that the rear end portion is brought into contact with the tip portion, and the upper surface on the rear end side of the position where the band-shaped member is sucked and held is moved downward by the pressing body of the rear end side pressing portion. It is characterized in that the rear end portion is pressed against the tip portion by pressing to join.

The band-shaped member joining device of the present invention includes a transport conveyor that conveys the mounted strip-shaped member toward the molding drum, and the front end and the rear end of the strip-shaped member at predetermined positions on the outer peripheral surface of the molding drum. In a band-shaped member joining device provided with an arrangement mechanism to be arranged, the arrangement mechanism is a suction means, a tip-side pressing portion in which the suction means is arranged closer to the molding drum, and the suction means. and the rear-side pressing portion in a state of being spaced apart from the forming drum than, and toward and away from moving relative to said forming drum, said suction means, the distal-side pressing portion and the rear end pressing portion The strip-shaped portion mounted on the transport conveyor is provided with a frame to which the frame is attached and a conveyor belt connecting portion having a gripping arm that is attached to the frame and grips the carrier side of the conveyor belt that constitutes the transport conveyor. The upper surface of the tip portion of the member is suction-held by the suction pad of the suction means that has been moved downward, and the conveyor belt is rotationally driven while the carrier side of the conveyor belt is gripped by the gripping arm. The suction means, which sucks and holds the upper surface of the portion, is configured to move closer to the molding drum in synchronization with the transport movement of the transport conveyor that transports the strip-shaped member toward the molding drum. After the portion is positioned above a predetermined position on the outer peripheral surface of the molding drum in which the portion is stopped, the suction pad is moved downward to move the suction pad downward so that the suction pad is arranged at the predetermined position and the tip side pressing portion is moved downward. The upper surface of the tip portion is pressed by the pressed pressing body to fix the tip portion at the predetermined position, and after the suction holding by the suction means and the pressing by the tip side pressing portion are released, the suction pad And the upper surface of the rear end portion of the strip-shaped member whose many parts are wound on the outer peripheral surface of the molding drum by moving the pressing body upward and rotating the molding drum is placed on the transport conveyor. It is sucked and held by the suction pad that has been moved downward in the state of being held, the carrier side of the conveyor belt is held by the conveyor belt connecting portion, the conveyor belt is rotationally driven, and the molding drum is rotated. Next, after positioning the rear end portion above a predetermined position on the outer peripheral surface of the molded drum that is stopped, the suction pad is moved downward to come into contact with the tip portion on the outer peripheral surface of the molding drum. In the arranged state, the rear end side pressing portion is moved downward. The upper surface of the rear end portion is pressed by the moved pressing body, so that the rear end portion is pressed against the tip portion and joined.

According to the present invention, when the front end portion and the rear end portion of the strip-shaped member are positioned on the outer peripheral surface of the molding drum, the upper surface of the tip portion is sucked and held by the suction means, and the upper surface of the tip portion is pressed by the tip side pressing portion. Press and press the upper surface of the rear end portion with the rear end side pressing portion. Therefore, the front end portion and the rear end portion of the strip-shaped member can be positioned at the set positions. When the band-shaped member is sucked and held, when the suction holding is released, when the band-shaped member is pressed and when the pressure is released, it is difficult for a force that causes a displacement of the band-shaped member to act. It is advantageous to join each other as set by suppressing the deviation in the width direction and the longitudinal direction.

It is explanatory drawing which illustrates the joining device of the strip-shaped member of this invention in the side view. It is explanatory drawing which illustrates the molding apparatus of FIG. 1 in a plan view. It is explanatory drawing which illustrates the process of installing the tip part of the strip-shaped member at a predetermined position on the outer peripheral surface of a molding drum from the side view. It is explanatory drawing which illustrates the process of fixing the tip part of the strip-shaped member of FIG. 3 at a predetermined position on the outer peripheral surface of a molding drum from the side view. It is explanatory drawing which illustrates the process of winding the strip-shaped member of FIG. 4 on the outer peripheral surface of a molding drum from the side view. FIG. 5 is an explanatory view illustrating a step of pressing the rear end portion of the strip-shaped member of FIG. 5 against the tip portion to join them in a side view.

Hereinafter, the method and apparatus for joining the strip-shaped members of the present invention will be described based on the embodiment shown in the figure.

In the strip-shaped member joining device 1 (hereinafter referred to as joining device 1) of the present invention exemplified in FIGS. 1 and 2, the longitudinal end portions 12a and 12b of the strip-shaped member 12 are joined on the outer peripheral surface of the forming drum 11. , The strip-shaped member 12 is formed into a cylindrical shape. Examples of the strip-shaped member 12 include various unvulcanized rubber members such as tread rubber and side rubber of tires, and belt materials used as reinforcing materials for rubber products such as tires. The belt material is a member in which a large number of steel cords arranged in parallel at a predetermined cord angle are coated with unvulcanized rubber.

The joining device 1 includes a transport conveyor 2 for transporting the mounted strip-shaped member 12 toward the forming drum 11, and an arrangement mechanism 3. The forming drum 11 is rotationally driven by a drive source such as a servomotor. The conveyor belt 2a constituting the conveyor 2 is rotationally driven by a drive source such as a servomotor (the mounted strip-shaped member 12 is conveyed and moved). Further, the conveyor 2 is configured to be movable in the width direction.

The arrangement mechanism 3 arranges the front end portion 12a and the rear end portion 12b of the strip-shaped member 12 at predetermined positions on the outer peripheral surface of the forming drum 11. In this embodiment, the arrangement mechanism 3 is attached to the frame 4, and includes a suction means 5, a front end side pressing portion 6 and a rear end side pressing portion 7 arranged on the front and rear sides of the suction means 5. There is. That is, the front end side pressing portion 6 is arranged at a position closer to the molding drum 11 than the suction means 5, and the rear end side pressing portion 7 is located at a position farther from the molding drum 11 than the suction means 5. It is in the placed state.

In this embodiment, the arrangement mechanism 3 is also provided with a conveyor belt connecting portion 8 attached to the frame 4. Further, it includes a position sensor 9 arranged above the tip of the conveyor 12 and a control unit 10. The position sensor 9 is composed of, for example, a CCD camera or the like.

As the suction means 5, a fluid cylinder such as an air cylinder having a suction pad 5a at the lower end, a rod that moves forward and backward by a servomotor, or the like can be used. The suction pad 5a moves in the direction of approaching and separating from the upper surface of the transport conveyor 2 (conveyor belt 2a). The suction pad 5a can also be rotatably attached to a rod or the like for moving the suction pad 5a in the vertical direction.

As the front end side pressing portion 6 and the rear end side pressing portion 7, a fluid cylinder such as an air cylinder having pressing bodies 6a and 7a at the lower end portions, a rod that moves forward and backward by a servomotor, and the like can be used. The pressing bodies 6a and 7a move in the directions of approaching and separating from the upper surface of the conveyor 2.

The front end side pressing portion 6 and the rear end side pressing portion 7 may have the same specifications or different specifications. For example, a flat elastic material is used on the lower surface of the pressing body 6a. When the pressing body 6a is flat, the pressing body 6a may be rotatably attached to a rod or the like for moving the pressing body 6a in the vertical direction as in this embodiment. The pressing body 7a is, for example, a roller that can rotate around a central axis parallel to the drum axis of the forming drum 11.

As the conveyor belt connecting portion 8, a fluid cylinder such as an air cylinder having a gripping arm 8a for gripping the conveyor belt 2a at the lower end portion, a rod that moves forward and backward by a servomotor, or the like can be used.

The suction means 5, the front end side pressing portion 6, the rear end side pressing portion 7, and the conveyor belt connecting portion 8 are integrally moved in close proximity to and away from each other by the frame 4 moving close to and away from the forming drum 11. The frame 4 is moved by using a fluid cylinder, a rod that moves forward and backward by a servomotor, or the like. The movements of the conveyor 2, the frame 4, the suction means 5, the front end side pressing unit 6, the rear end side pressing unit 7, the conveyor belt connecting unit 8, and the forming drum 11 are controlled by the control unit 10. The detection data by the position sensor 9 is input to the control unit 10. The conveyor 2 moves in the width direction based on the detection data by the position sensor 9.

Next, an example of a procedure for joining the front end portion 12a and the rear end portion 12b of the strip-shaped member 12 using the joining device 1 will be described.

As illustrated in FIGS. 1 and 2, the band-shaped member 12 is conveyed from the previous process by rotationally driving the transfer conveyor 2. Then, the suction pad 5a of the suction means 5 is moved downward with respect to the band-shaped member 12 mounted on the stopped transport conveyor 2, and the upper surface of the tip portion 12a of the band-shaped member 12 is sucked. Further, the gripping arm 8a of the conveyor belt connecting portion 8 is moved downward to grip the carrier side (upper side) of the conveyor belt. The pressing bodies 6a and 7a are maintained in a standby position where they do not come into contact with the upper surface of the strip-shaped member 12.

Next, as illustrated in FIG. 3, the frame 4 is horizontally moved and moved close to the forming drum 11. Since the frame 4 and the conveyor belt 2a are connected via the conveyor belt connecting portion 8, the conveyor belt 2a is rotationally driven, and the strip-shaped member 12 is conveyed toward the forming drum 11 by the conveying conveyor 2. As a result, the strip-shaped member 12 moves closer to the forming drum 11 with its tip portion 12a sucked and held by the suction means 5.

That is, since the strip-shaped member 12 is conveyed by the conveyor belt 2a in synchronization with the movement of the suction means 5 (in the same direction and at the same speed), the strip-shaped member 12 is inadvertently stretched without any tensile force acting on it. Can be prevented. It is also possible to have a configuration in which the belt-shaped member 12 is conveyed by the conveyor belt 2a in synchronization with the movement of the suction means 5 without providing the conveyor belt connecting portion 8.

Next, as illustrated in FIG. 4, after positioning the tip portion 12a of the strip-shaped member 12 above a predetermined position on the outer peripheral surface of the stopped molding drum 11, the suction pad 5a is moved downward to move the tip portion 12a. It is installed at a predetermined position on the outer peripheral surface of the forming drum 11. Then, the pressing body 6a is moved downward, and the upper surface on the tip side of the band-shaped member 12 is pressed by the tip side pressing portion 6. By this pressing, the tip portion 12a is fixed at a predetermined position on the outer peripheral surface of the molding drum 11. It is also possible to provide a suction portion at a predetermined position on the outer peripheral surface of the molding drum 11 and suck the lower surface of the tip portion 12a by the suction portion to make it more difficult for the tip portion 12a to be displaced.

In order to further prevent the tip portion 12a from shifting due to the pressing of the pressing body 6a, the pressing body 6a in contact with the upper surface of the tip portion 12a is moved to the inner peripheral side in the radial direction of the molding drum 11. , Do not overload the pressure on this top surface. Therefore, when the pressing body 6a has a flat plate shape, the width dimension thereof is set to be equal to or greater than the width dimension of the band-shaped rubber member 12, and the longitudinal dimension thereof is equal to or greater than the overlap length between the front end portion 12a and the rear end portion 12b to be joined. It is preferable to reduce the pressure when pressing by the pressing body 6a.

When the pressing body 6a is a roller, it is only moved to the inner peripheral side in the radial direction of the forming drum 11 and rolled in the circumferential direction. That is, the pressing body 6a does not handle the upper surface of the tip portion 12a. When an inflatable body that expands and contracts is used as the pressing body 6a, when the inflatable body expands in a state of being in contact with the upper surface of the tip portion 12a, the unvulcanized rubber forming the tip portion 12a has a width together with the inflatable body. It moves in the direction and the circumferential direction, and the deviation is likely to occur. Therefore, it is preferable that the pressing body 6a is a non-expanding body without adopting an expanding body that expands and contracts.

The predetermined position on the outer peripheral surface of the molding drum 11 for fixing the tip portion 12a may be the top of the molding drum 11 in the drum circumferential direction. This makes it easier to position and fix the tip portion 12a more accurately and stably.

Next, the suction holding by the suction means 5 on the band-shaped member 12 is released, and the suction pad 5a and the pressing body 6a are moved upward to a standby position that does not abut on the band-shaped member 12. The frame 4 is horizontally moved in a direction away from the forming drum 11 and returned to the standby position.

In the present invention, since the upper surface of the tip portion 12a is pressed by the tip side pressing portion 6 while the upper surface of the strip-shaped member 12 is sucked and held by the suction means 5, the tip portion 12a is positioned at a predetermined position as set. Can be fixed. Then, when the strip-shaped member 12 is sucked and held and when the suction holding is released, the force for shifting the strip-shaped member 12 in the width direction and the longitudinal direction does not substantially act.

Next, the strip-shaped member 12 is wound around the outer peripheral surface of the molding drum 11 by rotating the molding drum 11. At this time, the transport speed of the strip-shaped member 12 by the transport conveyor 2 is set to be the same as the winding speed due to the rotation of the forming drum 11 so that the strip-shaped member 12 is not inadvertently stretched. At this time, the conveyor 11 is moved in the width direction based on the detection data by the position sensor 9, and the strip-shaped member 12 is centered on the forming drum 11.

After winding most of the strip-shaped member 12 on the outer peripheral surface of the forming drum 11, the forming drum 11 is stopped. Next, the suction pad 5a of the suction means 5 is moved downward with respect to the rear end portion 12b of the strip-shaped member 12 mounted on the stopped transport conveyor 2, and the upper surface of the rear end portion 12b is sucked. Further, the gripping arm 8a of the conveyor belt connecting portion 8 is moved downward to grip the carrier side (upper side) of the conveyor belt. The pressing bodies 6a and 7a are maintained in a standby position where they do not come into contact with the upper surface of the strip-shaped member 12.

Next, as illustrated in FIG. 5, the frame 4 is horizontally moved and moved close to the forming drum 11. Since the frame 4 and the conveyor belt 2a are connected via the conveyor belt connecting portion 8, the conveyor belt 2a is rotationally driven, and the strip-shaped member 12 is conveyed toward the forming drum 11 by the conveying conveyor 2. As a result, the strip-shaped member 12 moves closer to the forming drum 11 with the rear end portion 12b being suction-held by the suction means 5.

Next, the rear end portion 12b of the strip-shaped member 12 is positioned above a predetermined position on the outer peripheral surface of the stopped forming drum 11. After that, as illustrated in FIG. 6, the suction pad 5a is moved downward to bring the rear end portion 12b into contact with the tip portion 12a wound on the outer peripheral surface of the molding drum 11. Then, the pressing body 7a is moved downward, and the upper surface on the rear end side of the position where the band-shaped member 12 is sucked and held is pressed by the rear end side pressing portion 7. From this, the rear end portion 12b is pressed against the tip portion 12a to join the two.

In order to further prevent the rear end portion 12b from shifting due to the pressing of the pressing body 7a, the pressing body 7a abutting on the upper surface of the rear end portion 12b is moved inward in the radial direction of the molding drum 11. , Do not overload the pressure on this top surface. Therefore, when the pressing body 7a has a flat plate shape, the width dimension thereof is set to be equal to or larger than the width dimension of the band-shaped rubber member 12, and the longitudinal dimension thereof is set to be equal to or larger than the overlap length between the front end portion 12a and the rear end portion 12b. It is preferable to cover the entire joint range of the portion 12a and the rear end portion 12b with the pressing portion 7a to reduce the pressure when pressing by the pressing body 7a.

When the pressing body 7a is a roller, it is only moved to the inner peripheral side in the radial direction of the forming drum 11 and rolled in the circumferential direction. That is, the pressing body 7a does not handle the upper surface of the rear end portion 12b. When an inflatable body that expands and contracts is used as the pressing body 7a, when the inflatable body expands in a state of being in contact with the upper surface of the rear end portion 12b, the unvulcanized rubber forming the rear end portion 12b becomes the inflatable body. At the same time, it moves in the width direction and the circumferential direction, and the deviation tends to occur. Therefore, it is preferable that the pressing body 7a is a non-expanding body without adopting an expanding body that expands and contracts.

The circumferential position of the tip portion 12a on the outer peripheral surface of the molding drum 11 when the rear end portion 12b is joined is preferably the top portion of the molding drum 11, but the tip portion 12a is set to the top portion of the molding drum 11. It takes time and effort. Therefore, if the pressing body 7a is made into a roller as in this embodiment, the rear end portion 12b is more accurate than the tip portion 12a regardless of the position of the tip portion 12a in the circumferential direction on the outer peripheral surface of the molding drum 11. It is well and stably crimped to facilitate joining.

Next, the suction holding by the suction means 5 with respect to the band-shaped member 12 is released, and the suction pad 5a and the pressing body 7a are moved upward to a standby position that does not abut on the band-shaped member 12. In the present invention, the upper surface of the rear end portion 12b is pressed by the rear end side pressing portion 7 while the upper surface of the strip-shaped member 12 is suction-held by the suction means 5, so that the rear end portion 12b is pressed by the rear end side pressing portion 7 as set. It can be positioned and joined to the portion 12a. Then, when the strip-shaped member 12 is sucked and held and when the suction holding is released, the force for shifting the strip-shaped member 12 in the width direction and the longitudinal direction does not substantially act.

As described above, according to the present invention, the front end portion 12a and the rear end portion 12b can be positioned at the positions set on the outer peripheral surface of the molding drum 11. Further, when the strip-shaped member 12 is sucked and held, when the suction holding is released, when the strip-shaped member 12 is pressed and when the pressing is released, the force for shifting the strip-shaped member 12 in the width direction and the longitudinal direction does not substantially act. Therefore, it is advantageous to join the both ends 12a and 12b of the strip-shaped member 12 in the longitudinal direction as set by suppressing the deviation in the width direction and the longitudinal direction.

In the profile member made of unvulcanized rubber whose thickness of the side rubber of the tire changes in the width direction, the flow velocity of the unvulcanized rubber is relatively high in the thick portion in the extrusion process, and the thickness is increased. In the small part, the flow velocity of the unvulcanized rubber becomes relatively slow. Along with this, the magnitude of residual strain differs in each portion. Due to this, opening of the portion where both ends in the longitudinal direction of the profile member are joined is likely to occur. Therefore, it is highly necessary to join the joined portions with high accuracy without deviation and to firmly join them. Therefore, it is preferable that the profile member made of unvulcanized rubber whose thickness changes in the width direction is the strip-shaped member 12 which is the target of the present invention.

1 Joining device 2 Conveyor conveyor 2a Conveyor belt 3 Arrangement mechanism 4 Frame 5 Suction means 5a Suction pad 6 Tip side pressing part 6a Pressing body 7 Rear end side pressing part 7a Pressing body 8 Conveyor belt connecting part 8a Gripping arm 9 Position sensor 10 Control Part 11 Molding drum 12 Band-shaped member 12a Tip part 12b Rear end part

Claims (5)

In a method of joining a strip-shaped member, which transports a strip-shaped member mounted on a transport conveyor toward a molding drum, winds the strip-shaped member on the outer peripheral surface of the molding drum, and joins both ends in the longitudinal direction thereof.
The upper surface of the tip end portion of the strip-shaped member mounted on the conveyor is held by moving the suction pad of the suction means attached to the frame downward to suck, and in this suction-holding state, the frame. in the attached holding the carrier side of the conveyor belt forming the conveyor by the conveyor belt connecting portion for rotating the said conveyor belt enough, the belt-shaped member by the conveyor in synchronization with the movement of said suction means Is positioned above a predetermined position on the outer peripheral surface of the molding drum at which the tip portion is stopped, and then the suction pad is moved downward to install the band-shaped member at the predetermined position. By pressing the upper surface on the tip side of the suction holding position with the pressing body of the tip side pressing portion moved downward, the tip portion is fixed at the predetermined position, and the suction holding by the suction means is released. After moving the suction pad and the pressing body upward, the forming drum is rotated so that the conveying speed of the strip-shaped member by the conveying conveyor is the same as the winding speed due to the rotation of the forming drum. After winding many parts on the outer peripheral surface of the molding drum, the molding drum is stopped, the suction pad is moved downward, and the strip-shaped member mounted on the stopped transport conveyor is used. The upper surface of the rear end portion is held by suction, and in this suction-held state, the carrier side of the conveyor belt is held by the conveyor belt connecting portion, the conveyor belt is rotationally driven, and the molding drum is driven. After rotating and then positioning the rear end portion above a predetermined position on the outer peripheral surface of the molded drum that is stopped, the suction pad is moved downward to bring the rear end portion into contact with the tip portion. Then, the upper surface on the rear end side of the suction-holding position of the band-shaped member is pressed by the pressing body of the rear end side pressing portion that has been moved downward, thereby pressing the rear end portion against the tip portion. A method of joining strip-shaped members, which comprises joining. The method for joining a band-shaped member according to claim 1, wherein the band-shaped member is a profile member made of unvulcanized rubber whose thickness changes in the width direction. A roller that can rotate around the central axis parallel to the drum axis of the molding drum is used as the rear end side pressing portion on the upper surface on the rear end side of the rear end portion of the strip-shaped member that is suction-held. The method for joining a strip-shaped member according to claim 1 or 2, wherein the rear end portion is pressed against the front end portion by pressing with the roller. A strip-shaped member including a conveyor that conveys the mounted strip-shaped member toward the molding drum, and an arrangement mechanism that arranges the front end portion and the rear end portion of the strip-shaped member at predetermined positions on the outer peripheral surface of the molding drum. In the joining device of
After the arrangement mechanism is arranged after the suction means, the tip-side pressing portion which is arranged closer to the forming drum than the suction means, and the arrangement mechanism which is arranged away from the forming drum than the suction means. The end side pressing portion, the frame to which the suction means, the front end side pressing portion and the rear end side pressing portion are attached by moving closer to and away from the molding drum, and the transport conveyor attached to the frame. A conveyor belt connecting portion having a gripping arm for gripping the carrier side of the conveyor belt constituting the above.
The upper surface of the tip end portion of the strip-shaped member mounted on the transport conveyor is suction-held by the suction pad of the suction means moved downward, and the carrier side of the conveyor belt is gripped by the grip arm. By rotationally driving the conveyor belt, the suction means that sucks and holds the upper surface of the tip portion to the molding drum synchronizes with the transport movement of the transport conveyor that transports the strip-shaped member toward the molding drum. On the other hand, in a configuration in which the tip portion is stopped, the suction pad is positioned above a predetermined position on the outer peripheral surface of the molding drum, and then the suction pad is moved downward to be arranged at the predetermined position. In this state, the upper surface of the tip portion is pressed by the pressing body moved downward of the tip side pressing portion, so that the tip portion is fixed at the predetermined position, suction is held by the suction means, and the tip side pressing portion is held. After the pressure is released by the suction pad and the pressing body, the suction pad and the pressing body are moved upward, and the molding drum is rotated so that a large part of the suction pad and the pressing body are wound on the outer peripheral surface of the molding drum. The upper surface of the portion is suction-held by the suction pad that has been moved downward while being mounted on the transport conveyor, and the carrier side of the conveyor belt is held by the conveyor belt connecting portion to rotate the conveyor belt. Then, after rotating the molding drum and then positioning the rear end portion above a predetermined position on the outer peripheral surface of the molding drum that is stopped, the suction pad is moved downward to the molding drum. The rear end portion is pressed by the pressing body moved downward from the rear end side pressing portion in a state where the rear end portion is placed in contact with the tip portion on the outer peripheral surface, so that the rear end portion is the tip end portion. A band-shaped member joining device characterized in that it is formed to be joined by being pressed against a portion. The joining device for strip-shaped members according to claim 4, wherein the suction means, the front end side pressing portion, and the rear end side pressing portion are integrally configured to move closer to and away from the molding drum by the frame. ..

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