JP2021110060A - Bonding device - Google Patents

Abstract

To provide a bonding device capable of improving efficiency of bonding of sheets including fabric and the like.SOLUTION: A bonding device has a lower conveying part that supports a lower sheet from below, and an upper conveying part that contacts an upper sheet from above and sandwiches the upper sheet and the lower sheet between the upper conveying part and the lower conveying part. The bonding device comprises: a conveying mechanism to convey the lower sheet and the upper sheet by the lower conveying part and the upper conveying part in a predetermined conveying direction; a nozzle 6A that discharges adhesive between the upper sheet and the lower sheet; a nozzle support part 60 that movably supports the nozzle 6A between an approach position close to the upper conveying part and a withdrawn position on upstream side of the approach position in the conveying direction; and an upper support part 6B that is provided on upstream side in the conveying direction of the nozzle 6A at the approach position and supports the upper sheet from below. The upper support part 6B is provided on the nozzle support part 60.SELECTED DRAWING: Figure 16

Description

The present invention relates to an adhesive device.

In the cloth bonding device described in Patent Document 1, an adhesive is discharged from a nozzle to a cloth, and the upper cloth and the lower cloth are sandwiched between the upper transport roller and the lower transport roller to bond them. The lower transfer roller is provided at the rear end of the tubular portion extending along the transfer direction of the cloth. The second support plate corresponding to the upper side surface of the tubular portion rotatably supports the upper support portion between the first position and the second position. The first position is the position on the front side of the nozzle when the nozzle is in an approaching position facing the lower cloth from above. The second position is a position retracted from the movement path when the nozzle moves between the approaching position and the retracting position on the front side of the approaching position. The upper support portion supports the upper cloth from below when it is in the first position.

JP-A-2019-178472

When the operator of the cloth bonding device places the lower cloth on the second support plate, it is necessary to move the nozzle to the retracted position. When moving the nozzle between the approach position and the retracted position, it is necessary to rotate the upper support portion to change from the first position to the second position in order to avoid contact of the nozzle with the upper support portion. Therefore, it is necessary to change the position of the upper support portion every time the nozzle is moved when the cloth is placed, which causes a problem that the work efficiency is lowered.

An object of the present invention is to provide an adhesive device capable of improving the efficiency of an adhesive operation of a sheet including a cloth or the like.

The adhesive device according to the present invention is an adhesive device for adhering an upper sheet and a lower sheet with an adhesive, and the lower transport portion that supports the lower sheet from below and the lower transport portion that contacts the upper sheet from above and conveys the lower sheet. A transport mechanism having an upper transport portion that sandwiches the upper sheet and the lower sheet between the portions, and transports the lower sheet and the upper sheet in a predetermined transport direction by the lower transport portion and the upper transport portion. A nozzle for ejecting the adhesive between the upper sheet and the lower sheet, an approaching position where the nozzle approaches the upper conveying portion, and a retracting position on the upstream side of the approaching position in the conveying direction. The upper support portion is provided with a nozzle support portion that is movably supported between the nozzles and an upper support portion that is provided on the upstream side of the nozzle at the approaching position in the transport direction and supports the upper sheet from below. Is provided on the nozzle support portion.

Since the adhesive device is provided with the upper support portion in the nozzle support portion, the upper support portion also moves according to the operation of the nozzle support portion moving the nozzle to the approaching position, and the upper support portion can support the upper sheet from below. .. In addition, the adhesive device can move the upper support portion together with the operation of the nozzle support portion moving the nozzle to the retracted position. That is, when moving the nozzle, the operator does not need to retract the upper support portion from the moving path of the nozzle. Therefore, the bonding device can improve the efficiency of the sheet bonding work by the operator.

In the present invention, when the nozzle is in the approaching position, the nozzle extends downward from the nozzle support portion, bends at the lower end and extends horizontally, and the upper support portion follows the nozzle and downwards from the nozzle support portion. It may extend to, bend at the lower end, and extend horizontally. The adhesive device can prevent the sheet being conveyed from being caught in the upper support portion and the nozzle. Therefore, the bonding device can smoothly convey the sheet and appropriately perform the bonding operation.

In the present invention, the lower transport portion is provided at an end on the downstream side in the transport direction, and a tubular portion extending in the transport direction and an accommodating portion for accommodating the lower drive portion for driving the lower transport portion are provided. The accommodating portion is provided on the upstream side of the tubular portion in the transport direction, and the tubular portion is swingably supported in the vertical direction via a support shaft, and the support shaft is accommodated. It may be provided in the part. The adhesive device can make the tubular portion smaller than when the support shaft is provided on the tubular portion. Therefore, the adhesive device can make the diameter of the sheet after bonding into a small tubular shape by winding the sheet around the tubular portion and adhering the sheet into a tubular shape.

In the present invention, the lower sheet presser is provided with a pressing portion that can move up and down on the upper side of the tubular portion, and the lower sheet is pressed between the lower sheet and the tubular portion by the pressing portion. It may be provided on the nozzle support portion. The adhesive device can prevent the lower sheet from slipping off from the tubular portion by pressing the lower sheet with the holding portion of the lower sheet retainer when the lower sheet is arranged in the tubular portion. Further, by providing the lower sheet retainer on the nozzle support portion, the adhesive device can be downsized as compared with the case where the lower sheet retainer is held by another mechanism.

In the present invention, the upper roller that comes into contact with the upper sheet from above and can be sandwiched between the upper support portion and the upper sheet and moves the upper sheet in an intersecting direction intersecting the transport direction and the vertical direction, and the above. The upper motor that drives the upper roller and the lower roller that comes into contact with the lower sheet from below and can be sandwiched between the upper support portion, and the lower roller that moves in the intersecting direction, and the lower roller. A lower motor for driving the lower motor and a transmission mechanism for transmitting the driving force of the lower motor to the lower roller may be provided, the lower motor may be provided in the accommodating portion, and the transmission mechanism may be provided in the tubular portion. The adhesive device can make the tubular portion smaller than when the lower motor is provided in the tubular portion. Therefore, the adhesive device can make the diameter of the sheet after bonding into a small tubular shape by winding the sheet around the tubular portion and adhering the sheet into a tubular shape.

In the present invention, a switching unit that switches the lower roller between a contact position capable of contacting the lower sheet and a separation position that is separated downward from the lower sheet, and an effective state that enables driving of the lower roller. The switching unit is provided with a setting unit that is set to either an invalid state that invalidates the drive of the lower roller, and the switching unit switches the lower roller to the contact position when the setting unit sets the effective state. When the invalid state is set by the setting unit, the lower roller may be switched to the separation position. The bonding device can disable the position control of the lower sheet in the crossing direction by the lower roller. Therefore, the bonding device can bond the sheets when the position control of the lower sheet in the crossing direction is not required, and can perform various forms of bonding operations.

In the present invention, the upper support portion may include a positioning portion for positioning the lid portion of the nozzle that closes the discharge port from which the adhesive is discharged. The operator can easily position the lid portion attached to prevent the adhesive from drying at the discharge port by the positioning portion.

The perspective view of the adhesive device 1. Perspective view of the internal structure of the adhesive device 1 Front view of the adhesive device 1 (nozzle 6A: approaching position, upper arm 50: downward swing). Left side view of the adhesive device 1 (nozzle 6A: approaching position, upper arm 50: downward swing). The perspective view of the lower transport mechanism 10A. The perspective view of the internal structure of the lower transfer mechanism 10A. The perspective view of the internal structure of the lower transfer mechanism 10A. Left side view of the tubular portion 32 (lower transport roller 3A: lower contact position). Left side view of the tubular portion 32 (lower transport roller 3A: lower separation position). The perspective view of the transmission mechanism 3F, the switching part 3G, and the lower holding roller 3C. Front view of the adhesive device 1 (nozzle 6A: retracted position, upper arm 50: upward swing). Left side view of the adhesive device 1 (nozzle 6A: retracted position, upper arm 50: upward swing). An enlarged view of the vicinity of the rear end of the tubular portion 32 (opening 35A closed). An enlarged view of the vicinity of the rear end portion of the tubular portion 32 (opening 35A). The perspective view of the nozzle 6A and the upper support portion 6B. An enlarged perspective view of the vicinity of the upper support portion 6B. The perspective view of the upper arm 50. A right side view of the vicinity of the rear end portion of the tubular portion 32. Rear view of the vicinity of the nozzle 6A (upper arm 50: downward swing). Rear view of the vicinity of the nozzle 6A (upper arm 50: upward swing). FIG. 3 is a perspective view of the adhesive device 1 on which the base 1H is mounted. A perspective view of the lid 8 as viewed from the front. A perspective view of the lid 8 as viewed from the rear. FIG. 3 is a perspective view of the nozzle 6A attached to the lid portion 8.

An embodiment of the present invention will be described. In the following explanation, the left and right, front and back, and top and bottom indicated by arrows in the figure are used. The adhesive device 1 adheres the upper sheet 9A and the lower sheet 9B with an adhesive (see FIG. 5). The upper sheet 9A overlaps the lower sheet 9B from above. The upper sheet 9A and the lower sheet 9B are, for example, flexible cloths. In the present embodiment, as an example, one end side of the tubular sheet 90 is the upper sheet 9A, and the other end side is the lower sheet 9B (see FIG. 5). The adhesive device 1 attaches the lower sheet end 90B (see FIG. 5), which is the right end of the lower sheet 9B, and the upper sheet end 90A (see FIG. 5), which is the left end of the upper sheet 9A, via an adhesive. Glue. The upper sheet 9A and the lower sheet 9B may be different cloths.

The bonding device 1 transports the upper sheet 9A and the lower sheet 9B in the rear direction in the process of the bonding operation. The front-back direction is sometimes referred to as the transport direction. The rear side is sometimes referred to as the downstream side in the transport direction, and the front side is sometimes referred to as the upstream side in the transport direction. The horizontal direction orthogonal to the transport direction and the vertical direction is sometimes referred to as an intersection direction.

<Outline of configuration of adhesive device 1>
The outline of the configuration of the adhesive device 1 will be described with reference to FIGS. 1 to 4. As shown in FIGS. 1 and 3, the adhesive device 1 has a pedestal portion 1A, a pedestal portion 1B, an arm portion 1C, and a head portion 1D. The pedestal portion 1A has a rectangular parallelepiped shape and is fixed to the work table. The pedestal portion 1B extends upward from the upper end portion of the pedestal portion 1A. The arm portion 1C extends to the left from the upper end portion of the pedestal portion 1B. The left end of the arm 1C is the head 1D.

The pedestal portion 1A supports the fixing portion 1E. The fixing portion 1E extends in the front-rear direction and is fixed to the left surface of the pedestal portion 1A. The front portion of the fixed portion 1E extends forward from the front end of the pedestal portion 1A, and the front end supports the lower transport mechanism 10A. The lower transfer mechanism 10A includes a lower transfer roller 3A, a nozzle lower roller 3B, a lower holding roller 3C, a lower drive unit 3D (see FIG. 7), and the like, which will be described later. The lower transfer roller 3A, the nozzle lower roller 3B, and the lower holding roller 3C each come into contact with the lower sheet 9B from below. The lower transfer roller 3A, the nozzle lower roller 3B, and the lower holding roller 3C are each driven by the lower drive unit 3D. At this time, the lower transfer roller 3A and the nozzle lower roller 3B convey the lower sheet 9B in the transfer direction, and the lower holding roller 3C moves the lower sheet 9B in the intersecting direction.

The head 1D has a mounting portion 11 at the upper end for mounting the cartridge. The mounting portion 11 has a box-shaped cover 11A extending upward from the upper surface of the head 1D. The mounting portion 11 includes a housing portion 11B, a heater, and the like. The accommodating portion 11B extends vertically inside the cover 11A, and the cartridge can be attached to and detached from the inside. The cartridge contains a heat-meltable adhesive. The adhesive liquefies above a predetermined temperature and solidifies below a predetermined temperature. The heater heats the cartridge housed in the housing section 11B, melts the adhesive, and liquefies it.

As shown in FIG. 2, the supply mechanism 45 supplies the adhesive in the cartridge to the nozzle 6A. The supply mechanism 45 includes a pump motor 114 and a gear pump 115. The pump motor 114 is provided inside the arm portion 1C (see FIG. 1). The pump motor 114 includes an output shaft 114A. The gear pump 115 is provided on the front side of the mounting portion 11. The output shaft 114A is connected to the gear pump 115 via the gear 46A. The gear pump 115 sucks the adhesive in the cartridge.

As shown in FIGS. 1 to 4, the head 1D supports the upper transfer mechanism 10B (see FIG. 4), the upper movement mechanism 10C (see FIGS. 1 and 3), the nozzle movement mechanism 10D, and the like. As shown in FIG. 4, the upper transfer mechanism 10B includes an upper transfer roller 4A, an upper drive unit 4B, and the like. The upper transfer roller 4A is driven by the upper drive unit 4B and comes into contact with the upper sheet 9A from above to convey the upper sheet 9A in the transfer direction. As shown in FIG. 3, the upper moving mechanism 10C includes an upper holding roller 5A, an upper driving unit 5B, and the like. The upper holding roller 5A is driven by the upper driving unit 5B, comes into contact with the upper seat 9A from above, and moves the upper seat 9A in the crossing direction. As shown in FIG. 4, the nozzle moving mechanism 10D includes a nozzle 6A. The nozzle 6A discharges the adhesive supplied via the supply mechanism between the upper sheet 9A and the lower sheet 9B.

The pedestal portion 1B includes a setting portion 12 at the left end portion on the front surface. The setting unit 12 is a plurality of push buttons arranged in the vertical direction. When the operator gives an operation instruction to the adhesive device 1, the operator inputs the input to the setting unit 12.

<Lower transport mechanism 10A>
As shown in FIGS. 1 and 5, the lower transport mechanism 10A has an accommodating portion 31 and a tubular portion 32. The accommodating portion 31 is connected to the front end of the fixing portion 1E (see FIG. 1). The accommodating portion 31 has a box shape extending in the left-right direction, and is located in front of the pedestal portion 1A, the pedestal portion 1B, the arm portion 1C, and the head portion 1D in the transport direction. The accommodating unit 31 accommodates the lower drive unit 3D and the switching unit 3G (see FIGS. 7 and 10). The accommodating portion 31 has a protruding portion 31A protruding rearward at the rear end and in the center in the left-right direction. As shown in FIG. 4, the projecting portion 31A is provided with a columnar support shaft 33 extending in the left-right direction.

As shown in FIGS. 1 and 5, the tubular portion 32 has an elongated box shape and extends rearward from the accommodating portion 31 along the transport direction. The accommodating portion 31 is located on the front side with respect to the tubular portion 32. The upper surface of the tubular portion 32 is arranged substantially in the same plane as the upper surface of the accommodating portion 31. The lower surface of the tubular portion 32 is arranged above the lower surface of the accommodating portion 31. The tubular portion 32 has a left wall 32L and an extension plate 34B (see FIG. 6). The stretch plate 34B forms the right side surface of the tubular portion 32. The tubular portion 32 accommodates a lower transport roller 3A, a nozzle lower roller 3B, a lower holding roller 3C, a belt 3E, a transmission mechanism 3F (see FIG. 7), and a lower detection unit (not shown). The left wall 32L has a plate shape extending parallel to the extending plate 34B. The left wall 32L forms the left side surface of the tubular portion 32.

As shown in FIG. 6, a part of the front side of the tubular portion 32 is located in the protruding portion 31A of the accommodating portion 31. As shown in FIG. 7, a hole 320A is provided in a portion of the stretched plate 34B located in the protruding portion 31A of the accommodating portion 31. The hole 320A is located on the front side of the central portion in the front-rear direction of the extension plate 34B. A hole 320B (see FIG. 8) is provided in a portion of the left wall 32L of the tubular portion 32 located in the protruding portion 31A of the accommodating portion 31. The hole 320B is located near the front end of the left wall 32L. The support shaft 33 provided in the protruding portion 31A of the accommodating portion 31 is inserted into the holes 320A and 320B. The accommodating portion 31 rotatably supports the tubular portion 32 via the support shaft 33. The spring (not shown) urges the front side of the tubular portion 32 upward.

The lower drive unit 3D includes a lower clearance motor 30A, a lower transfer motor 30B, a lower motor 30C, and an air cylinder 30D. The lower clearance motor 30A is a drive source for swinging the tubular portion 32 in the vertical direction. The lower transfer motor 30B is a drive source for rotating the lower transfer roller 3A and the nozzle lower roller 3B. The lower motor 30C is a drive source for rotating the lower holding roller 3C. The air cylinder 30D is a drive source for moving the lower holding roller 3C up and down.

The eccentric cam 34A is connected to the rotating shaft 301 of the lower clearance motor 30A extending to the left. The eccentric cam 34A is a disk cam. The eccentric cam 34A is eccentric so that the distance between the outer circumference and the rotation shaft 301 changes. The extension plate 34B extends upward from the left side of the lower clearance motor 30A, bends rearward, and extends along the transport direction. The stretch plate 34B is provided with a hole 341 at the front end portion. The hole 341 includes an abutting portion 341A projecting inward. The diameter of the hole 341 becomes smaller at the contact portion 341A. The eccentric cam 34A is located in the hole 341. The eccentric cam 34A maintains a state of being in contact with the abutting portion 341A by the spring for urging the front side of the tubular portion 32 upward.

As the eccentric cam 34A is rotated in the hole 341 by the lower clearance motor 30A, the portion of the eccentric cam 34A that comes into contact with the contact portion 341A of the hole 341 is switched. At this time, the distance between the rotating shaft 301 of the lower clearance motor 30A and the contact portion 341A fluctuates, and the front end portion of the extension plate 34B moves in the vertical direction. The extension plate 34B rotates about the support shaft 33 and swings the rear end portion in the vertical direction. At this time, the tubular portion 32 swings its rear end portion in the vertical direction about the support shaft 33. Specifically, as shown in FIG. 8, when the front end portion of the extension plate 34B moves downward (arrow Y11) due to the rotation of the eccentric cam 34A, the rear end portion of the tubular portion 32 moves upward (arrow). Arrow Y12). On the other hand, as shown in FIG. 9, when the front end portion of the extension plate 34B moves upward due to the rotation of the eccentric cam 34A (arrow Y13), the rear end portion of the tubular portion 32 moves downward (arrow Y14). ..

As shown in FIGS. 6 and 7, the tubular portion 32 accommodates the lower transfer roller 3A, the nozzle lower roller 3B, the lower holding roller 3C, and the lower detection portion at the rear end portion. The lower transfer roller 3A is located at the rearmost end in the tubular portion 32. The tubular portion 32 rotatably supports the shaft 321 extending in the left-right direction at the rear end portion. The shaft 321 is inserted into the lower transport roller 3A and rotates together with the lower transport roller 3A. Therefore, the tubular portion 32 rotatably supports the lower transfer roller 3A via the shaft 321. The shaft 321 includes a pulley 38A on the right side of the lower transport roller 3A.

The nozzle lower roller 3B is adjacent to the lower transfer roller 3A in the tubular portion 32 on the front side. The tubular portion 32 rotatably supports the shaft 322 extending in the left-right direction on the front side of the shaft 321. The shaft 322 is inserted into the nozzle lower roller 3B and rotates together with the nozzle lower roller 3B. Therefore, the tubular portion 32 rotatably supports the nozzle lower roller 3B via the shaft 322. The shaft 322 includes a pulley 38B on the right side of the nozzle lower roller 3B.

The lower holding roller 3C is adjacent to the nozzle lower roller 3B in the tubular portion 32 on the front side. The lower holding roller 3C is rotatably supported by a transmission mechanism 3F described later.

As shown in FIG. 5, the tubular portion 32 includes covers 323 and 35. The cover 323 has a plate shape extending in the front-rear direction, and is fixed to the extension plate 34B and the upper end portion of the left wall 32L to form the front upper surface of the tubular portion 32. The cover 323 has a notch 32C at the rear end, which is a cutout of the cover 323 on the front side. The lower holding roller 3C is located below the notch 32C. At the rear end and upper surface of the tubular portion 32, an opening 35A (see FIG. 14) is provided on the rear side of the cover 323, and the lower transfer roller 3A and the nozzle lower roller 3B are located below the opening 35A. The plate-shaped cover 35 is made of metal and can be attached to the tubular portion 32 by the magnetic force of a magnet provided at the rear upper end portion of the stretched plate 34B and the left wall 32L. When the cover 35 is attached to the tubular portion 32, the opening 35A is closed. At this time, the rear end portion 351 of the cover 35 projects rearward with respect to the rear end portion of the lower transport roller 3A (see FIGS. 13 and 18).

The cover 35 has a notch 32A and a hole 32B. The notch 32A is a portion in which the rear end portion of the cover 35 is cut out to the front side. The hole 32B has a substantially rectangular shape in a plan view provided on the front side of the notch 32A. The lower transfer roller 3A is located below the notch 32A, and the upper end thereof slightly protrudes upward from the notch 32A. The lower nozzle roller 3B is located below the hole 32B, and the upper end thereof slightly protrudes upward from the hole 32B.

The lower transfer roller 3A and the nozzle lower roller 3B move in the vertical direction when the tubular portion 32 swings due to the drive of the lower clearance motor 30A (see FIGS. 8 and 9). When the rear end portion of the tubular portion 32 is moved upward by the drive of the lower clearance motor 30A, the gap between the nozzle 6A and the cover 35, which will be described later, becomes smaller. As shown in FIG. 8, when the rear end portion of the tubular portion 32 moves to the uppermost position, the gap between the nozzle 6A and the cover 35, which will be described later, becomes the minimum. The positions of the lower transfer roller 3A and the nozzle lower roller 3B at this time are referred to as lower contact positions.

When the rear end portion of the tubular portion 32 is moved downward by the drive of the lower clearance motor 30A, the gap between the nozzle 6A and the cover 35, which will be described later, becomes large. As shown in FIG. 9, when the rear end portion of the tubular portion 32 moves to the lowermost position, the gap between the nozzle 6A and the cover 35, which will be described later, becomes maximum. The positions of the lower transfer roller 3A and the nozzle lower roller 3B at this time are referred to as lower separation positions.

As shown in FIG. 7, the lower transfer motor 30B is fixed to the right side surface of the front end portion of the extension plate 34B. The rotation shaft of the lower transfer motor 30B extends to the left and projects to the left from the hole 34H provided in the extension plate 34B. The rotating shaft has a pulley at the tip. A belt 3E is bridged between the pulley 38A provided on the shaft 321 inserted through the lower transfer roller 3A, the pulley 38B provided on the shaft 322 inserted through the nozzle lower roller 3B, and the pulley of the lower transfer motor 30B. .. The belt 3E extends in the tubular portion 32 in the transport direction. The belt 3E transmits the driving force of the lower transfer motor 30B to the lower transfer roller 3A and the nozzle lower roller 3B via the pulleys 38A and 38B. The lower transfer roller 3A and the nozzle lower roller 3B rotate according to the drive of the lower transfer motor 30B. The diameters of the pulleys 38A and 38B are the same. Therefore, according to the drive of the lower transfer motor 30B, the lower transfer roller 3A and the nozzle lower roller 3B are rotationally driven in the same direction at the same speed.

The lower transfer roller 3A and the nozzle lower roller 3B support the lower sheet 9B from below, and transfer the lower sheet 9B to the downstream side along the transfer direction by rotation. The rear end portion 351 of the cover 35 suppresses the upper sheet 9A and the lower sheet 9B from being wound around the lower transfer roller 3A in the process of transfer.

As shown in FIGS. 7 and 10, the lower motor 30C is provided on the left side of the drawing plate 34B. The rotation shaft of the lower motor 30C extends to the rear side. The transmission mechanism 3F includes a support portion 37A, an arm portion 37B, an extension portion 36, a belt 36A, and pulleys 36B, 36C. The support portion 37A has a box shape and is provided on the rear side of the lower motor 30C. The support portion 37A has a hole 371 that penetrates in the front-rear direction. The arm portion 37B accommodates the belt 36A inside and is fixed to the lower motor 30C. The arm portion 37B has a connecting plate portion 372, a cylindrical portion 373, a cylindrical portion 374, and a connecting portion 375.

The connecting plate portion 372 is fixed to the rear surface of the lower motor 30C. The connecting plate portion 372 has a rectangular shape when viewed from the rear. The cylindrical portion 373 has a rear view circular shape extending rearward from the rear surface of the connecting plate portion 372. The columnar portion 373 and the connecting plate portion 372 have a hole portion penetrating in the front-rear direction, and the hole portion is located on the front side of the hole 371 of the support portion 37A. The cylindrical portion 374 has a circular shape when viewed from the rear, and extends in the front-rear direction inside the hole 371 of the support portion 37A and the hole portion of the cylindrical portion 373 and the connecting plate portion 372. The rear portion of the cylindrical portion 374 is located on the rear side of the support portion 37A. The front portion of the cylindrical portion 374 is fixed to the cylindrical portion 373. The support portion 37A rotatably supports the cylindrical portion 374. The support portion 37A is provided with a plate-shaped regulation plate 335 extending forward on the left surface.

The connecting portion 375 is fixed to the rear end portion of the cylindrical portion 374. The connecting portion 375 includes a base portion 375A, a plate portion 375B, and a 375C. The base portion 375A is fixed to the rear end portion of the cylindrical portion 374 with four screws 370. The base 375A has a thickness in the front-rear direction. The base 375A includes a notch 376 notched from the upper right to the lower left.

From the front end of the base portion 375A, an arc-shaped plate portion 375B extends upward to the right. From the rear end of the base portion 375A, an arc-shaped plate portion 375C extends upward to the right. The upper right portions of the plate portions 375B and 375C rotatably support the extension portion 36. The extending portion 36 extends inside the tubular portion 32 in the front-rear direction. The extending portion 36 fixes the lower holding roller 3C to the rear end portion. The lower holding roller 3C rotates about a rotation axis parallel to the transport direction, and moves the lower sheet 9B in the intersecting direction.

The drive shaft 302 extends inside the notch 376 of the connecting portion 375 through a hole provided inside the cylindrical portion 374. The front end of the drive shaft 302 is connected to the output shaft of the lower motor 30C and is rotated by the drive of the lower motor 30C. The pulley 36B is provided at the rear end of the drive shaft 302. The pulley 36C is provided between the plate portions 375B and 375C in the extension portion 36. The belt 36A is hung on the pulleys 36B and 36C. The arm portion 37B accommodates the belt 36A between the plate portions 375B and 375C and inside the notch portion 376. When the lower motor 30C is driven, the lower holding roller 3C rotates via the drive shaft 302, the pulley 36B, the belt 36A, the pulley 36C, and the extension portion 36.

The switching unit 3G moves the lower holding roller 3C up and down. The switching unit 3G has an air cylinder 30D on the left side of the support unit 37A. The rod 331 of the air cylinder 30D extends upward. The rod 331 is provided with a contact portion 331A at the upper end portion. The contact portion 331A has a columnar shape.

The shaft portion 332 extends to the left from the cylindrical portion 373 of the arm portion 37B. The cylindrical portion 374 includes a shaft portion 345 on the rear left surface. The shaft portion 345 extends to the left. The upper end of the spring 342 is locked to the shaft portion 345. The lower end of the spring 342 is locked to the bolt 343 fixed to the support portion 37A.

The support portion 37A rotatably supports the cylindrical portion 374 of the arm portion 37B. Therefore, the arm portion 37B can swing around the drive shaft 302 of the lower motor 30C. The spring 342 urges the lower holding roller 3C upward via the arm portion 37B by urging the shaft portion 345 downward. The lower holding roller 3C is located at the uppermost position with the rod 331 of the air cylinder 30D moved downward. The position of the lower holding roller 3C at the highest position is referred to as the lower holding position. At this time, the upper end of the lower holding roller 3C slightly protrudes upward from the notch 32C so that it can come into contact with the lower sheet 9B.

With the rod 331 of the air cylinder 30D moving upward, the contact portion 331A moves the shaft portion 332 upward. As the shaft portion 332 moves, the arm portion 37B swings around the drive shaft 302 against the urging force of the spring 342. At this time, the lower holding roller 3C moves downward. When the shaft portion 332 moves upward until it comes into contact with the regulation plate 335, the lower holding roller 3C is located at the lowermost position. The position of the lower holding roller 3C at the lowest position is referred to as a lower position. At this time, the lower holding roller 3C is located below the notch 32C and is separated downward from the lower sheet 9B.

When the lower holding roller 3C is in the lower holding position, it comes into contact with the lower sheet 9B from below and sandwiches the lower sheet 9B with the upper support portion 6B (described later). In this state, when the transmission mechanism 3F transmits the driving force of the lower motor 30C to the lower holding roller 3C, the lower holding roller 3C rotates and moves the lower seat 9B in the crossing direction.

The lower detection unit (not shown) is located below the hole 32B in the tubular portion 32. The lower detection unit includes a light emitting unit and a light receiving unit. The light emitting unit emits light toward a reflector provided on the lower surface of the upper support portion 6B. The light receiving unit can receive the light emitted by the light emitting unit and reflected by the reflector. The lower detection unit can detect whether the lower sheet end 90B (see FIG. 5), which is the right end of the lower sheet 9B, is in a predetermined lower detection position.

<Upper transport mechanism 10B>
As shown in FIGS. 4 and 12, the upper transfer mechanism 10B includes an upper transfer roller 4A, an upper drive unit 4B, a support arm 40, and an air cylinder. The support arm 40 extends diagonally forward and downward from the lower end of the head 1D. The head 1D supports the support arm 40 so as to be swingable. The support arm 40 rotatably supports the upper transport roller 4A at the lower end. The upper transport roller 4A rotates about a rotation axis extending in the left-right direction. The air cylinder can swing the support arm 40 in the vertical direction by moving the rod forward and backward. The swing of the support arm 40 causes the upper transport roller 4A to move up and down.

As shown in FIG. 4, when the upper transport roller 4A moves downward, it faces the lower transport roller 3A in the vertical direction. The position of the upper transfer roller 4A at that time is referred to as an upper contact position. When the upper transport roller 4A moves upward, it separates upward from the lower transport roller 3A. The position of the upper transfer roller 4A at that time is referred to as an upper separation position.

The upper drive unit 4B has an upper transfer motor 41. The transmission mechanism provided inside the support arm 40 transmits the driving force of the upper transfer motor 41 to the upper transfer roller 4A. The upper transfer roller 4A rotates according to the drive of the upper transfer motor 41. When the upper transfer roller 4A is in the upper contact position, the upper transfer roller 4A contacts the upper sheet 9A from above. The upper transfer roller 4A sandwiches the upper sheet 9A and the lower sheet 9B between the lower transfer roller 3A. The upper transfer roller 4A rotates the upper sheet 9A together with the lower sheet 9B to the downstream side along the transfer direction.

<Nozzle movement mechanism 10D>
As shown in FIGS. 1 to 4, the nozzle moving mechanism 10D has a nozzle support portion 60, a nozzle 6A (see FIG. 4), an upper support portion 6B, a nozzle motor 67, and a support shaft. The nozzle motor 67 is a pulse motor provided on the left side inside the head 1D. The nozzle motor 67 includes an output shaft with a worm fixed. The support shaft has a tubular shape that extends in the left-right direction above the worm. The support shaft supports a worm wheel 672 that meshes with the upper end of the worm. The support shaft rotates together with the worm wheel 672 by the power of the nozzle motor 67. The support shaft has an adhesive flow path inside. The gear pump 115 supplies the sucked adhesive to the flow path in the support shaft.

The nozzle support portion 60 extends in the vertical direction. The nozzle support portion 60 has a cover 61 and a lever member 62. The lever member 62 is provided on the left side of the worm wheel 672 and has an arm shape extending downward from the left end of the support shaft. The support shaft supports the lever member 62 so as to be swingable. The flow path provided inside the lever member 62 communicates with the flow path inside the support shaft. The lever member 62 is provided with a heater in the vicinity of the flow path. The heat of the heater is conducted to the adhesive flowing through the flow path. The cover 61 extends in the vertical direction and covers the lever member 62, the lower seat retainers 6C, and 6D (described later). The nozzle 6A and the upper support portion 6B are provided at the lower end portion of the nozzle support portion 60.

The nozzle 6A and the upper support portion 6B project downward from the lower end of the nozzle support portion 60. The nozzle 6A moves between the approaching position (see FIGS. 3 and 4) and the retracted position (see FIGS. 11 and 12) in response to the swing of the nozzle support portion 60. The nozzle 6A at the approaching position approaches the upstream side in the transport direction of the upper transport roller 4A at the upper contact position. The nozzle 6A in the retracted position is separated upstream from the position of the nozzle 6A (see FIGS. 3 and 4) in the approaching position in the transport direction. The nozzle support portion 60 movably supports the nozzle 6A between the approach position and the retracted position. Details of the nozzle 6A and the upper support portion 6B will be described later.

<Lower sheet retainer 6C, 6D>
As shown in FIGS. 2 and 3, the lower sheet retainer 6C is fixed to the front surface of the lever member 62 of the nozzle support portion 60 and is located above the tubular portion 32. The lower seat retainer 6C is composed of an air cylinder, and has a cylinder 63 and a retainer portion 64. The cylinder 63 has a rectangular parallelepiped shape, and the rod projects downward. The pressing portion 64 is provided at the lower end of the rod of the air cylinder. The pressing portion 64 can move up and down according to the advancement and retreat of the rod. When the pressing portion 64 moves upward, the lower end portion 64A of the pressing portion 64 is separated upward from the tubular portion 32. When the pressing portion 64 moves downward from this state, the pressing portion 64 moves diagonally downward to the right. At this time, the lower end portion 64A comes into contact with the upper surface of the tubular portion 32. The pressing portion 64 presses the lower sheet 9B between the lower end portion 64A and the tubular portion 32 on the front side of the nozzle 6A and the upper supporting portion 6B.

The cylinder 63 is provided with a mounting portion 65 at the lower end. The mounting portion 65 has a bent plate shape and has a first portion 65A and a second portion 65B. The first part 65A is connected to the lower end of the cylinder 63 and extends in the left-right direction. The second part 65B extends downward from the left end of the first part 65A. An upper support portion 6B, which will be described later, is fixed to the second portion 65B.

As shown in FIG. 4, the lower sheet retainer 6D is fixed to the rear surface of the lever member 62 of the nozzle support portion 60 and is located above the tubular portion 32. The lower seat retainer 6D is composed of an air cylinder, and has a cylinder 68 and a retainer portion 69. The cylinder 68 has a rectangular parallelepiped shape, and the rod projects downward. The pressing portion 69 is provided at the lower end of the rod of the air cylinder. The pressing portion 69 can move up and down according to the advancement and retreat of the rod. When the pressing portion 69 moves upward, the lower end portion 69A of the pressing portion 69 is separated upward from the tubular portion 32. When the pressing portion 69 moves downward from this state, the pressing portion 69 moves diagonally downward to the right. At this time, the lower end portion 69A comes into contact with the upper surface of the tubular portion 32. The pressing portion 69 presses the lower sheet 9B between the lower end portion 69A and the tubular portion 32 on the rear side of the nozzle 6A and the upper supporting portion 6B.

<Upper detection unit 6E, detection support unit 7A>
As shown in FIG. 13, the upper detection unit 6E is located to the right of the nozzle support unit 60 when the nozzle 6A is in the approaching position. The upper detection unit 6E includes a light emitting unit and a light receiving unit. The light emitting unit emits light toward the reflector 671 provided on the nozzle 6A, which will be described later. The light receiving unit can receive the light emitted by the light emitting unit and reflected by the reflector 671. The position where the upper sheet end 90A (see FIG. 5), which is the left end of the upper sheet 9A, overlaps on the path of the light emitted by the light emitting unit is referred to as the upper detection position P. The upper detection unit 6E can detect whether the upper sheet end 90A is at the upper detection position P.

The detection support unit 7A supports the upper detection unit 6E. The detection support portion 7A has extension portions 71A, 71B, 71C, and a protrusion 71D. The extension portion 71A extends below the head 1D in the left-right direction. The extension portion 71B extends downward from the left end of the extension portion 71A. The extension portion 71C extends to the right from the lower end of the extension portion 71B. The extension unit 71C inserts the upper detection unit 6E into the holes provided in the center of the left and right, and holds the upper detection unit 6E. The protrusion 71D is connected to the right end of the extension 71C and protrudes in the vertical direction.

The right surface 72 of the protrusion 71D has a first portion 72A and a second portion 72B. The first part 72A and the second part 72B are adjacent to each other in the vertical direction. The first part 72A is a portion of the upper half of the right surface 72 of the protrusion 71D. The first part 72A is orthogonal to the left-right direction. The second portion 72B is a portion of the lower half of the right surface 72 of the protrusion 71D. The second part 72B is inclined with respect to the first part 72A. The direction from the upper end to the lower end of the protrusion 71D along the right surface 72 extends downward at the first portion 72A and extends obliquely downward to the left at the second portion 72B. The detection support unit 7A swings the regulation mechanism 7B, which will be described later, to switch the position.

<Nozzle 6A>
FIG. 15 shows the state of the nozzle 6A in the approaching position. The nozzle 6A has a connecting portion 67A and extending portions 67B and 67C. The connecting portion 67A is connected to the lower end of the lever member 62 of the nozzle support portion 60. The hole 670 provided in the connecting portion 67A communicates with the adhesive supply path provided in the lever member 62. The extension portion 67B extends downward from the connecting portion 67A. The extension portion 67C extends horizontally from the lower end of the extension portion 67B toward the right. Therefore, the nozzle 6A extends downward from the nozzle support portion 60 at the connecting portion 67A and the extending portion 67B, bends to the right at the lower end, and extends horizontally at the extending portion 67C.

The nozzle 6A has an adhesive supply path inside each of the connecting portion 67A, the extending portion 67B, and 67C. The upper end of the supply path communicates with the hole 670 of the connecting portion 67A. The lower end of the supply path communicates with the adhesive discharge port provided at the lower end of the extension 67C. The adhesive supplied from the cartridge through the supply path of the lever member 62 flows through the supply path of the nozzle 6A and is discharged downward from the discharge port.

The extension portion 67C has a reflector 671 on the upper surface thereof. The reflector 671 reflects the light emitted by the light emitting unit of the upper detection unit 6E (see FIG. 13) toward the light receiving unit.

As shown in FIG. 13, the extension portion 67C of the nozzle 6A at the approaching position is located above the nozzle lower roller 3B. The extending portion 67C of the nozzle 6A at the close position faces the roller 3B under the nozzle in the vertical direction. As shown in FIGS. 11 and 12, the nozzle 6A in the retracted position is separated from the position of the nozzle 6A in the approaching position (see FIGS. 3 and 4) to the upstream side in the transport direction.

<Upper support part 6B>
As shown in FIG. 15, the upper support portion 6B has a connecting portion 66A, extending portions 66B, 66C, and a cover 665. As shown in FIG. 2, the connecting portion 66A is connected to the second portion 65B of the mounting portion 65 connected to the lower seat retainer 6C. The extension portion 66B extends downward from the connecting portion 66A. The cover 665 is made of resin and is fixed to the left surface of the extension portion 66B. The extension portion 66C extends horizontally from the lower end of the extension portion 66B toward the right. Therefore, in the upper support portion 6B, the connecting portion 66A and the extension portion 66B extend downward from the nozzle support portion 60, bend to the right at the lower end, and the extension portion 66C extends horizontally (see FIG. 3). The extension portion 66C has a plate shape. The extension portion 66C has a protrusion 661 protruding from the vicinity of the right end to the rear side. The rear end 66D of the protrusion 661 extends to the vicinity of the front end of the extension 67C of the nozzle 6A. The protrusion 661 has a recess 662 at the rear end 66D. The recess 662 extends from the rear end 66D toward the front. The recess 662 forms a bottomed hole extending downward from the upper surface of the protrusion 661.

The extension portion 66C has a reflector on the lower surface. The reflector reflects the light emitted by the light emitting portion of the lower detection portion provided on the tubular portion 32 toward the light receiving portion. The lower detection unit detects the presence or absence of the lower sheet end 90B (see FIG. 5) of the lower sheet 9B depending on whether or not the light receiving unit receives the light emitted by the light emitting unit.

When the nozzle 6A is in the approaching position, the upper support portion 6B is located in front of the nozzle 6A. More specifically, as shown in FIG. 3, the connecting portions 66A and the extending portions 66B and 66C of the upper support portion 6B are located on the front side of the connecting portions 67A and the extending portions 67B and 67C of the nozzle 6A, respectively. The direction in which the upper support portion 6B extends from the nozzle support portion 60 follows the direction in which the nozzle 6A extends. Therefore, the upper support portion 6B is aligned with the nozzle 6A in the transport direction.

As shown in FIG. 16, when the nozzle 6A is in the approaching position, the extension portion 66C of the upper support portion 6B faces the upper side of the lower holding roller 3C. As shown in FIG. 4, the upper support portion 6B supports the upper sheet 9A from below, and sandwiches the lower sheet 9B between the upper support portion 6B and the lower holding roller 3C.

<Upward movement mechanism 10C>
As shown in FIGS. 1 and 3, the upper moving mechanism 10C includes an upper holding roller 5A, an upper driving unit 5B, an upper arm 50, and an air cylinder 501. The upper arm 50 extends to the left from the lower end of the arm portion 1C, and curves diagonally downward to the left at the left end to further extend. The arm portion 1C supports the upper arm 50. As shown in FIGS. 13 and 17, the upper arm 50 has protrusions 56, 57, 58 on the rear surface 51. The protruding portions 56, 57, 58 project toward the rear side. The protruding portion 56 supports the regulating mechanism 7B and the urging portion 7C (see FIG. 17), which will be described later.

As shown in FIGS. 1 and 3, the upper arm 50 rotatably supports the upper holding roller 5A at the lower end portion. The upper holding roller 5A rotates about a rotation axis extending in the front-rear direction. The air cylinder 501 can swing the lower end of the upper arm 50 in the vertical direction by moving the rod forward and backward.

The upper holding roller 5A moves up and down due to the swing of the upper arm 50. As shown in FIG. 4, when the upper holding roller 5A moves downward in response to the downward swing of the upper arm 50, the upper holding roller 5A approaches the tubular portion 32 from above. At this time, the upper holding roller 5A is located on the upstream side of the nozzle 6A in the approaching position in the transport direction, and is located above the extending portion 66C of the upper supporting portion 6B. The upper holding roller 5A faces the extending portion 66C in the vertical direction. The position of the upper holding roller 5A at that time is referred to as an upper holding position. As shown in FIG. 13, when the upper holding roller 5A is in the upper holding position, the upper detection position P of the upper sheet 9A by the upper detection unit 6E is the upper transfer roller 4A (see FIG. 4) and the lower transfer in the transfer direction. It is located between the roller 3A and the upper holding roller 5A.

As shown in FIG. 11, when the upper holding roller 5A moves upward in response to the upward swing of the upper arm 50, the upper holding roller 5A is separated upward from the tubular portion 32. The position of the upper holding roller 5A at that time is referred to as an upper position.

The upper drive unit 5B has an upper motor 50A. The transmission mechanism provided inside the upper arm 50 transmits the driving force of the upper motor 50A to the upper holding roller 5A. The upper holding roller 5A rotates according to the drive of the upper motor 50A. When the upper holding roller 5A is in the upper holding position, it comes into contact with the upper sheet 9A from above. The upper holding roller 5A sandwiches the upper sheet 9A between the upper supporting portion 6B and the extending portion 66C. The upper holding roller 5A moves the upper sheet 9A in the crossing direction by rotation.

<Regulatory mechanism 7B, urging unit 7C>
As shown in FIG. 13, the regulation mechanism 7B is provided on the rear surface 51 of the upper arm 50 of the upper movement mechanism 10C. The regulation mechanism 7B moves according to the swing of the upper arm 50. 17 to 19 show the position (referred to as the regulation position) of the regulation mechanism 7B when the upper arm 50 swings downward. In response to the downward swing of the upper arm 50, the upper holding roller 5A moves to the upper holding position, and the regulating mechanism 7B moves to the regulating position. FIG. 20 shows the position (referred to as the non-regulated position) of the regulating mechanism 7B when the upper arm 50 swings upward. In response to the upward swing of the upper arm 50, the upper holding roller 5A moves to the upper position, and the regulating mechanism 7B moves to the non-regulated position. In the following, each configuration will be described on the premise that the regulatory mechanism 7B is in the regulated position.

As shown in FIGS. 17 and 18, the regulation mechanism 7B has a bent plate shape. The regulation mechanism 7B has a connecting portion 76A, an extension portion 76B, and a regulating portion 76C. The connecting portion 76A faces the rear surface 51 of the upper arm 50. The protruding portion 56 of the upper arm 50 is inserted into a hole provided in the connecting portion 76A. The regulating mechanism 7B is rotatable with respect to the upper arm 50 by rotating the connecting portion 76A around the protruding portion 56. The extending portion 76B extends downward from the lower end of the connecting portion 76A while inclining to the rear side. The extension portion 76B passes on the right side of the upper holding roller 5A.

The regulation portion 76C extends in the crossing direction from the lower end of the extension portion 76B toward the left. The regulating unit 76C passes behind the upper holding roller 5A. As shown in FIG. 13, the regulating unit 76C is located between the upper transfer roller 4A (see FIG. 4) and the lower transfer roller 3A and the upper holding roller 5A in the transfer direction. More specifically, the regulation unit 76C is located between the upper detection position P of the upper sheet 9A by the upper detection unit 6E and the upper holding roller 5A in the transport direction. As shown in FIG. 19, the right end of the regulating portion 76C is located to the right of the right end of the upper holding roller 5A. The left end of the regulating portion 76C is located to the left of the left end of the upper holding roller 5A. That is, both ends of the regulating portion 76C in the crossing direction are located outside the upper holding roller 5A in the crossing direction.

As shown in FIG. 17, the regulating portion 76C has an inclined portion 761 and a horizontal portion 762. The inclined portion 761 is connected to the lower end of the extending portion 76B, and extends downward and inclined toward the rear side. The horizontal portion 762 is connected to the lower end of the inclined portion 761 and extends horizontally toward the rear side. As shown in FIG. 18, the horizontal portion 762 is located below the protrusion 71D of the detection support portion 7A, and the rear end portion of the extension portion 66C of the upper support portion 6B when the nozzle 6A is in the approaching position. Located above. The horizontal portion 762 corresponds to the lower end portion of the regulation portion 76C and is located above the lower end portion of the upper holding roller 5A.

As shown in FIG. 17, the urging portion 7C is provided on the rear surface 51 of the upper arm 50 of the upper moving mechanism 10C. The urging portion 7C is a torsion spring and has a coil portion 78 and end portions 79A and 79B. The protruding portion 56 of the upper arm 50 is inserted into the coil portion 78. The end portion 79A is locked to the protruding portion 57 of the upper arm 50. The end portion 79B is locked to the connecting portion 76A of the regulation mechanism 7B. The urging portion 7C urges the regulating mechanism 7B, which can rotate around the protruding portion 56, in the counterclockwise direction in a state viewed from the rear (states of FIGS. 19 and 20). The protruding portion 58 of the upper arm 50 contacts the left end portion of the connecting portion 76A of the regulating mechanism 7B and restricts the rotation of the regulating mechanism 7B. Hereinafter, unless otherwise specified, the rotation direction (clockwise or counterclockwise) will be described on the assumption that the state is viewed from the rear (states of FIGS. 19 and 20).

FIG. 19 shows when the nozzle 6A is in an approaching position and the upper arm 50 swings downward. At this time, the regulation mechanism 7B is positioned at the regulation position by rotating in the counterclockwise direction by the urging force of the urging portion 7C. The horizontal portion 762 of the regulating portion 76C of the regulating mechanism 7B approaches the upper sheet 9A supported by the extending portion 66C (see FIG. 18) of the upper supporting portion 6B from above. The horizontal portion 762 of the regulating portion 76C restricts the upward movement of the upper sheet 9A. The position of the regulation unit 76C at that time is referred to as a regulation position as well as the position of the regulation mechanism 7B.

When the upper arm 50 swings upward from the state shown in FIG. 19, the horizontal portion 762 of the regulating portion 76C comes into contact with the second portion 72B of the protruding portion 71D of the detection support portion 7A from below. The left end of the horizontal portion 762 moves upward along the second portion 72B of the protrusion 71D. The regulating mechanism 7B receives a force from the protrusion 71D of the detection support portion 7A and rotates clockwise against the urging force of the urging portion 7C.

FIG. 20 shows a time when the upper arm 50 swings upward from the state of FIG. At that time, the regulatory mechanism 7B is in an unregulated position. The horizontal portion 762 of the regulating portion 76C of the regulating mechanism 7B is located to the right of the protruding portion 71D of the detection support portion 7A. At this time, the regulating portion 76C is separated upward from the upper sheet 9A supported by the extending portion 66C (see FIG. 18) of the upper supporting portion 6B. The position of the regulation unit 76C at that time is referred to as a non-regulation position as well as the position of the regulation mechanism 7B.

<Adhesion operation (cylindrical adhesion operation)>
The bonding operation (cylindrical adhesion) when the upper sheet 9A and the lower sheet 9B are bonded by the bonding device 1 to create the tubular sheet 90 will be described. Before the bonding operation, the nozzle 6A is located at an approaching position (see FIGS. 3 and 4). The upper transfer roller 4A is located at the upper contact position, the upper holding roller 5A is located at the upper position, the lower transfer roller 3A and the nozzle lower roller 3B are located at the lower contact position, and the lower holding roller 3C is located at the lower position. .. The regulatory mechanism 7B is in an unregulated position (see FIG. 20). The lower sheet pressers 6C and 6D are in a state in which the presser portions 64 and 69 are moved upward. The heater starts heating and heats the adhesive.

When the operator inputs an operation instruction to the setting unit 12, the adhesive device 1 swings the support arm 40 upward by the air cylinder of the upper transport mechanism 10B, and the rear end of the tubular portion 32 by the lower gap motor 30A. Swing the part downward. The upper transfer roller 4A moves to the upper separation position, and the lower transfer roller 3A and the nozzle lower roller 3B move to the lower separation position. The operator places the lower sheet 9B on the upper surface of the tubular portion 32. The lower transfer roller 3A and the nozzle lower roller 3B come into contact with the lower sheet 9B from below.

When the operator inputs an operation instruction to the setting unit 12, the adhesive device 1 swings the arm portion 37B by the air cylinder 30D, and the lower holding roller 3C moves from the lower position to the lower holding position. The lower holding roller 3C sandwiches the lower sheet 9B between the extending portion 66C of the upper supporting portion 6B. The bonding device 1 rotates the lower holding roller 3C by driving the lower motor 30C. The output shaft of the lower motor 30C controls the rotation direction according to the detection result of the lower detection unit, and controls the position of the lower seat 9B in the intersecting direction. When the operator inputs an operation instruction to the setting unit 12, the adhesive device 1 swings the rear end portion of the tubular portion 32 upward by the lower gap motor 30A, and the lower transfer roller 3A and the nozzle lower roller 3B are lowered. Move from the separated position to the lower contact position. The adhesive device 1 moves the pressing portion 64 of the lower sheet retainer 6C and the pressing portion 69 of the lower sheet retainer 6D downward. The lower sheet pressers 6C and 6D press the lower sheet 9B placed on the tubular portion 32 between the lower sheet retainers 6C and 6D and the tubular portion 32.

The operator places the upper sheet 9A on the upper surface of the extension portion 66C of the upper support portion 6B. When the operator inputs an operation instruction to the setting unit 12, the adhesive device 1 swings the upper arm 50 downward by the air cylinder 501, and the upper holding roller 5A moves from the upper position to the upper holding position. The upper holding roller 5A sandwiches the upper sheet 9A between the upper supporting portion 6B and the extending portion 66C (see FIG. 4). At this time, the regulating mechanism 7B moves from the non-regulated position to the regulated position as the upper arm 50 swings (see FIG. 19). The bonding device 1 rotates the upper holding roller 5A by driving the upper motor 50A. The output shaft of the upper motor 50A controls the rotation direction according to the detection result of the upper detection unit 6E, and controls the position of the upper sheet 9A in the crossing direction. When the operator inputs an operation instruction to the setting unit 12, the adhesive device 1 swings the support arm 40 downward by the air cylinder of the upper transfer mechanism 10B, and moves the upper transfer roller 4A from the upper separation position to the upper contact position. Moving. At this time, the upper transfer roller 4A sandwiches the upper sheet 9A and the lower sheet 9B between the upper transfer roller 4A and the lower transfer roller 3A (see FIG. 4).

When the operator inputs an operation instruction to start the bonding operation to the setting unit 12, the bonding device 1 moves the pressing portion 64 of the lower sheet retainer 6C and the pressing portion 69 of the lower sheet retainer 6D upward, and the lower sheet is pressed. Release the presser foot of the lower sheet 9B by the presser foot 6C and 6D. The adhesive device 1 starts discharging the adhesive from the nozzle 6A by driving the pump motor 114. The adhesive is discharged between the upper sheet 9A and the lower sheet 9B and adheres to the lower sheet 9B. The bonding device 1 starts the rotation of the upper transfer roller 4A, the lower transfer roller 3A, and the nozzle lower roller 3B by driving the upper transfer motor 41 and the lower transfer motor 30B. The upper transfer roller 4A and the lower transfer roller 3A cooperate to transfer the upper sheet 9A and the lower sheet 9B to the rear side. The nozzle lower roller 3B auxiliary conveys the lower sheet 9B to the rear side. The adhesive device 1 presses the upper sheet 9A and the lower sheet 9B with the upper transfer roller 4A and the lower transfer roller 3A, and adheres them with an adhesive.

The adhesive device 1 detects whether or not the upper sheet end 90A (see FIG. 5) of the upper sheet 9A is at the upper detection position P (see FIG. 13) by the upper detection unit 6E. When the adhesive device 1 detects that the upper sheet 9A is located at the upper detection position P, the adhesive device 1 rotates the upper holding roller 5A so as to move the upper sheet 9A to the right side. When the adhesive device 1 detects that the upper sheet 9A is not present at the upper detection position P, the adhesive device 1 rotates the upper holding roller 5A so as to move the upper sheet 9A to the left side. The adhesive device 1 detects whether or not the lower sheet end 90B (see FIG. 5) of the lower sheet 9B is in the lower detection position by the lower detection unit. When the adhesive device 1 detects that the lower sheet 9B is at the lower detection position, the adhesive device 1 rotates the lower holding roller 3C so as to move the lower sheet 9B to the left side. When the adhesive device 1 detects that the lower sheet 9B is not present at the lower detection position, the bonding device 1 rotates the lower holding roller 3C so as to move the lower sheet 9B to the right side. At this time, the upper sheet 9A and the lower sheet 9B can adhere the adhesive to the upper sheet end portion 90A and the lower sheet end portion 90B, and can adhere to each other.

When the operator inputs an instruction to end the bonding operation to the setting unit 12, the bonding device 1 stops the rotation of the upper transfer roller 4A, the lower transfer roller 3A, the nozzle lower roller 3B, the upper pinch roller 5A, and the lower pinch roller 3C. And, the discharge of the adhesive from the nozzle 6A is stopped. The adhesive device 1 swings the support arm 40 upward by the air cylinder of the upper transport mechanism 10B, swings the upper arm 50 upward by the air cylinder 501, and swings the arm portion 37B by the air cylinder 30D. do. The upper transfer roller 4A moves to the upper separation position, the upper holding roller 5A moves to the upper position, and the lower holding roller 3C moves to the lower position. At this time, the regulating mechanism 7B moves from the regulated position to the non-regulated position as the upper arm 50 swings (see FIG. 20). The operator takes out the tubular sheet 90 from the adhesive device 1.

<Adhesion operation (when tubular adhesion is not performed)>
As shown in FIG. 21, when the bonding device 1 does not perform tubular bonding, the table 1H can be attached to perform the bonding operation. Hereinafter, a state in which the base 1H is attached to the adhesive device 1 will be described.

The platform 1H includes a mounting portion 86 and support legs 87. The mounting portion 86 has a plate shape and extends in the front-rear direction and the left-right direction in a state of being attached to the adhesive device 1. The mounting portion 86 has a notch portion 86A at the center in the left-right direction of the front end portion. The cutout portion 86A cuts out the front end portion of the mounting portion 86 toward the rear. The cutout portion 86A has substantially the same shape as the accommodating portion 31 and the tubular portion 32 of the lower transport mechanism 10A in a plan view. The vertical positions of the upper surfaces of the accommodating portion 31 and the tubular portion 32 and the upper surface of the mounting portion 86 are the same. The support legs 87 are provided on the left rear portion of the lower surface of the mounting portion 86 and extend downward. The lower end of the support leg 87 is placed on the work table. The support legs 87 support the mounting portion 86 from below.

An example shows a case where the table 1H is used and the elongated tape-shaped upper sheet 9C is adhered to the central portion of the rectangular lower sheet 9D in the left-right direction with an adhesive. At this time, the operator needs to invalidate the drive of the lower holding roller 3C and prohibit the lower seat 9D from moving in the intersecting direction. The reason is that the adhesive device 1 drives the lower holding roller 3C to move the lower sheet 9D to the left until the lower detecting portion detects the right end portion of the lower sheet 9D. Therefore, when the lower holding roller 3C is driven, the adhesive device 1 cannot bond the upper sheet 9C to the central portion of the lower sheet 9D in the left-right direction with an adhesive.

The adhesive device 1 can switch between an effective state in which the drive of the lower holding roller 3C is enabled and an invalid state in which the drive of the lower holding roller 3C is disabled by inputting to the setting unit 12. Hereinafter, the bonding operation at this time will be described only as an operation different from the bonding operation when performing tubular bonding, and the description of the same operation will be omitted. When performing tubular bonding, the operator can perform the bonding operation in the same manner as in the above embodiment by inputting an operation instruction to be in an effective state to the setting unit 12.

When the tubular bonding is not performed, the operator inputs an operation instruction for invalidating the tubular bonding to the setting unit 12. The operator places the lower sheet 9D on the upper surfaces of the tubular portion 32 and the mounting portion 86, and inputs the operation instruction to the setting unit 12. At this time, the adhesive device 1 moves the lower holding roller 3C downward via the arm portion 37B by driving the air cylinder 30D. The operator places the upper sheet 9C on the upper surface of the extension portion 66C of the upper support portion 6B, and inputs an operation instruction to the setting unit 12. The adhesive device 1 swings the support arm 40 downward by the air cylinder of the upper transfer mechanism 10B, and moves the upper transfer roller 4A from the upper separation position to the upper contact position. At this time, the upper transfer roller 4A sandwiches the upper sheet 9C and the lower sheet 9D between the upper transfer roller 4A and the lower transfer roller 3A. When the operator inputs an operation instruction to start the bonding operation to the setting unit 12, the bonding device 1 crimps the upper sheet 9C and the lower sheet 9D by the upper transfer roller 4A and the lower transfer roller 3A, and the bonding device discharges from the nozzle 6A. Adhere with an agent.

In the bonding operation, the bonding device 1 does not move the lower sandwiching roller 3C to the lower sandwiching position, but maintains the lower sandwiching roller 3C in the lower position. At this time, the lower holding roller 3C is separated from the lower sheet 9D. The bonding device 1 does not drive the lower motor 30C, and the lower sheet 9D does not move in the crossing direction.

<Cover 8>
A lid portion 8 for closing the discharge port of the nozzle 6A will be described with reference to FIGS. 22 and 23. The lid portion 8 has a covering portion 81, a holding portion 82, and a knob 83. The covering portion 81 has a rectangular plate shape and is orthogonal to the vertical direction. The upper surface of the covering portion 81 forms a step and has a first surface 81A and a second surface 81B. The second surface 81B is located behind and above the first surface 81A. A resin member 811 is fixed to the surface of the first surface 81A with screws 810. The sandwiching portion 82 is located above the covering portion 81. The sandwiching portion 82 has a substantially rectangular shape and extends in the front-rear direction. The rear portion of the sandwiching portion 82 faces the second surface 81B, and the front portion faces the resin member 811 of the first surface 81A. As shown in FIG. 23, the sandwiching portion 82 is provided with a columnar convex portion 84 projecting downward at the front end portion of the surface facing the resin member 811. The knob 83 has a columnar shape and is located below the covering portion 81. The knob 83 is rotatable about an axis extending in the vertical direction. The screw 83A is inserted into a hole (not shown) provided in the covering portion 81, and the upper end portion is fixed to the holding portion 82. A knob 83 can be screwed into the lower end of the screw 83A. When the knob 83 is screwed into the screw 83A and the knob 83 is rotated, the distance between the covering portion 81 and the holding portion 82 fluctuates.

The operation of attaching and detaching the lid portion 8 will be described. The operator rotates the knob 83 of the lid portion 8 to separate the cover portion 81 from the holding portion 82. The operator inserts the lid portion 8 from the rear side into the nozzle 6A. The convex portion 84 (see FIG. 23) enters and fits into the concave portion 662 (see FIG. 15) provided in the upper support portion 6B from the rear, and the lid portion 8 is positioned with respect to the nozzle 6A and the upper support portion 6B.

As shown in FIG. 24, the resin member 811 provided on the cover portion 81 of the lid portion 8 faces downward with respect to the discharge port below the nozzle 6A. The operator rotates the knob 83 and brings the covering portion 81 and the holding portion 82 close to each other. At this time, the lid portion 8 presses the resin member 811 of the cover portion 81 against the discharge port of the nozzle 6A, and the resin member 811 closes the discharge port of the nozzle 6A.

<Action and effect of this embodiment>
In the adhesive device 1, since the nozzle support portion 60 is provided with the nozzle 6A and the upper support portion 6B, the upper support portion 6B also moves according to the operation of the nozzle support portion 60 to move the nozzle 6A to the approaching position, and the upper support portion 6B is also moved. The upper sheet 9A can be supported from below by the portion 6B. Further, in the adhesive device 1, the upper support portion 6B can also move together with the operation of the nozzle support portion 60 moving the nozzle 6A to the retracted position. That is, when moving the nozzle 6A, the operator does not need to retract the upper support portion 6B from the movement path of the nozzle 6A. Therefore, the adhesive device 1 can improve the work efficiency when the operator adheres the upper sheet 9A and the lower sheet 9B.

The upper support portion 6B extends downward from the nozzle support portion 60 following the nozzle 6A, bends at the lower end, and extends horizontally. The nozzle 6A and the upper support portion 6B are aligned in the transport direction. The adhesive device 1 can prevent the upper sheet 9A and the lower sheet 9B during transportation from being caught by the nozzle 6A after passing through the upper support portion 6B. Therefore, the bonding device 1 can smoothly convey the upper sheet 9A and the lower sheet 9B and appropriately perform the bonding operation.

The accommodating portion 31 is provided on the upstream side in the transport direction with respect to the tubular portion 32. A support shaft 33 is provided in the accommodating portion 31. The accommodating portion 31 supports the tubular portion 32 so as to be swingable in the vertical direction via the support shaft 33. The adhesive device 1 can make the tubular portion 32 smaller than when the support shaft 33 is provided on the tubular portion 32. Therefore, the bonding device 1 can make the diameter of the sheet after bonding small by winding the sheet around the tubular portion 32 and bonding the sheet in a tubular shape.

The adhesive device 1 is provided with lower sheet retainers 6C and 6D on the nozzle support portion 60. The lower sheet presser 6C has a presser portion 64 that can move up and down on the upper side of the tubular portion 32, and the lower sheet 9B is pressed between the lower sheet 9B and the tubular portion 32 by the presser portion 64. The lower sheet presser 6D has a presser portion 69 that can move up and down on the upper side of the tubular portion 32, and the lower sheet 9B is pressed between the lower sheet 9B and the tubular portion 32 by the presser portion 69. When the lower sheet 9B is arranged in the tubular portion 32, the adhesive device 1 presses the lower sheet 9B with the pressing portions 64 and 69 of the lower sheet pressers 6C and 6D to prevent the lower sheet 9B from sliding down from the tubular portion 32. Can be prevented. Further, by providing the lower sheet retainers 6C and 6D in the nozzle support portion 60, the adhesive device 1 can be downsized as compared with the case where the lower sheet retainers 6C and 6D are held by another mechanism.

In the bonding device 1, the accommodating portion 31 accommodates the lower motor 30C that drives the lower sandwiching roller 3C. The transmission mechanism 3F for transmitting the driving force of the lower motor 30C to the lower motor 30C is provided in the tubular portion 32. The adhesive device 1 can make the tubular portion 32 smaller than when the lower motor 30C is provided on the tubular portion 32. Therefore, the bonding device 1 can reduce the diameter of the sheet 90 after bonding by winding the tubular portion 32 around the sheet 90 and bonding the sheet 90 in a tubular shape.

The adhesive device 1 has a switching unit 3G. The switching unit 3G switches the lower holding roller 3C between the contact position and the separation position. The adhesive device 1 can be set to either an effective state in which the drive of the lower holding roller 3C is enabled or an invalid state in which the drive of the lower holding roller 3C is disabled by operating the setting unit 12. When the adhesive device 1 is set to the effective state, the lower holding roller 3C is switched to the contact position by the switching unit 3G. The adhesive device 1 maintains the lower holding roller 3C at a separated position when it is set to the invalid state. The bonding device 1 can invalidate the position control of the lower sheet 9B in the crossing direction by the lower holding roller 3C. Therefore, the bonding device 1 can bond the sheets when the position control of the lower sheet 9B in the crossing direction is not required, and can perform various forms of bonding operations.

The lid portion 8 is attached to the adhesive device 1 to close the discharge port of the nozzle 6A. The upper support portion 6B includes a recess 662. The concave portion 662 is fitted with the convex portion 84 of the lid portion 8 so as to position the lid portion 8 with respect to the nozzle 6A. The operator can easily position the lid portion 8 attached to suppress the drying of the adhesive at the discharge port of the nozzle 6A by the recess 662 of the upper support portion 6B.

When the nozzle 6A is in the retracted position, the operator can easily see the lower part of the nozzle 6A and the upper support portion 6B (see FIG. 12). Therefore, the operator can easily confirm whether or not the discharge port on the lower surface of the nozzle 6A and the reflector on the lower surface of the upper support portion 6B are dirty by moving the nozzle 6A to the retracted position.

The cover 35 is removable from the tubular portion 32 and is attached by the magnetic force of a magnet to close the opening 35A. When the cover 35 is removed from the tubular portion 32, the lower transfer roller 3A and the nozzle lower roller 3B are exposed from the opening 35A. Therefore, the adhesive device 1 can easily remove the cover 35 from the tubular portion 32 to perform maintenance inside the tip of the tubular portion 32.

The rear end portion 351 of the cover 35 projects rearward with respect to the rear end portion of the lower transport roller 3A (see FIG. 13). Therefore, the adhesive device 1 can prevent the upper sheet 9A and the lower sheet 9B from being wound around the lower transfer roller 3A in the process of transfer by the rear end portion 351 of the cover 35. Further, the operator can easily remove the cover 35 from the tubular portion 32 by hooking a finger on the rear end portion 351 and lifting it upward.

<Modification example>
The present invention is not limited to the above embodiment. The shape of the upper support portion 6B can be changed as appropriate, and is not limited to the shape extending following the nozzle 6A. For example, the extension portion 66B of the upper support portion 6B may extend in the vertical direction on the right side of the extension portion 66C and may be connected to the right end portion of the extension portion 66C. The upper support portion 6B may be directly fixed to the nozzle 6A.

The accommodating portion 31 is provided with a support shaft 33 on the protruding portion 31A, and the tubular portion 32 is swingably supported by the support shaft 33. The accommodating portion 31 does not have to have the protruding portion 31A. The accommodating portion 31 may internally support the support shaft 33. The tubular portion 32 may be swingable by a support shaft 33 internally supported by the accommodating portion 31.

At least one or both of the lower sheet retainers 6C and 6D may be fixed to the arm 1C or the head 1D. At this time, the adhesive device 1 may have a mechanism for fixing the lower sheet retainers 6C and 6D to the arm portion 1C or the head portion 1D. The lower motor 30C for driving the lower holding roller 3C may be housed in the tubular portion 32. For example, the lower motor 30C may be provided near the upstream side of the lower holding roller 3C and may be directly driven without the transmission mechanism 3F.

The adhesive device 1 may have a detection unit that detects the attachment / detachment of the base 1H. When the adhesive device 1 determines that the base 1H is mounted based on the detection result of the detection unit, the upper holding roller 5A is set to the upper position, the lower holding roller 3C is set to the lower position, and the upper holding roller 5A and the lower holding roller are placed. The rotation control of 3C may be invalidated. When the adhesive device 1 determines that the base 1H is not mounted based on the detection result of the detection unit, the upper holding roller 5A is set to the upper holding position, the lower holding roller 3C is set to the lower holding position, and the upper holding roller 5A and the upper holding roller 5A and the lower holding roller 3C are set to the lower holding position. The rotation control of the lower holding roller 3C may be enabled. When the adhesive device 1 is in the invalid state, the upper holding roller 5A may be set to the upper holding position, the lower holding roller 3C may be set to the lower holding position, and the rotation control of the upper holding roller 5A and the lower holding roller 3C may be invalidated. When the adhesive device 1 is in the invalid state, the upper holding roller 5A may be placed in the upper position.

The adhesive device 1 positioned the lid portion 8 with respect to the nozzle 6A by entering the convex portion 84 of the lid portion 8 into the concave portion 662 provided in the upper support portion 6B. The upper support portion 6B may have a convex portion instead of the concave portion 662. The lid portion 8 may have a concave portion instead of the convex portion 84. The upper support portion 6B may have a fitted portion of the nozzle 6A that fits with the fitting portion of the lid portion 8 that closes the discharge port from which the adhesive is discharged. The lid portion 8 may be positioned with respect to the nozzle 6A by fitting the fitting portion to the fitted portion of the upper support portion 6B.

<Others>
The lower transport roller 3A is an example of the lower transport portion of the present invention. The upper transfer roller 4A is an example of the upper transfer unit of the present invention. The lower transfer roller 3A and the upper transfer roller 4A are examples of the transfer mechanism of the present invention. The upper holding roller 5A is an example of the upper roller of the present invention. The lower holding roller 3C is an example of the lower roller of the present invention. The lower motor 30C is an example of the lower motor of the present invention.

1: Adhesive device 3A: Lower transfer roller 3C: Lower holding roller 3F: Transmission mechanism 3G: Switching part 4A: Upper transfer roller 5A: Upper holding roller 6A: Nozzle 6B: Upper support part 6C, 6D: Lower sheet presser 64, 69 : Pressing part 8: Lid part 10B: Upper transfer mechanism 10D: Nozzle moving mechanism 12: Setting part 30C: Lower motor 30D: Air cylinder 31: Accommodating part 32: Cylindrical part 33: Support shaft 41: Upper transfer motor 662: Recess

Claims (7)

An adhesive device that adheres the upper and lower sheets with an adhesive.
The lower transport portion has a lower transport portion that supports the lower sheet from below, and an upper transport portion that contacts the upper sheet from above and sandwiches the upper sheet and the lower sheet between the lower transport portions. A transport mechanism that transports the lower sheet and the upper sheet in a predetermined transport direction by the unit and the upper transport unit, and
A nozzle that discharges the adhesive between the upper sheet and the lower sheet,
A nozzle support portion that movably supports the nozzle between an approaching position that approaches the upper transporting portion and a retracting position that is upstream of the approaching position in the transporting direction.
It is provided on the upstream side in the transport direction with respect to the nozzle at the approaching position, and is provided with an upper support portion that supports the upper sheet from below.
An adhesive device characterized in that the upper support portion is provided on the nozzle support portion. When in the approaching position, the nozzle extends downward from the nozzle support, bends at the lower end and extends horizontally.
The adhesive device according to claim 1, wherein the upper support portion extends downward from the nozzle support portion following the nozzle, bends at the lower end, and extends horizontally. A tubular portion having the lower transport portion at an end on the downstream side in the transport direction and extending in the transport direction, and a tubular portion.
A housing unit for accommodating the lower drive unit for driving the lower transport unit is provided.
The accommodating part
The tubular portion is provided on the upstream side in the transport direction with respect to the tubular portion, and the tubular portion is supported so as to be swingable in the vertical direction via a support shaft.
The adhesive device according to claim 1 or 2, wherein the support shaft is provided in the accommodating portion. It has a presser foot that can move up and down on the upper side of the tubular portion, and has a lower sheet presser that presses the lower sheet between the tubular portion and the presser foot portion.
The adhesive device according to claim 3, wherein the lower sheet retainer is provided on the nozzle support portion. An upper roller that comes into contact with the upper sheet from above and can be sandwiched between the upper support portion and moves the upper sheet in an intersecting direction that intersects the transport direction and the vertical direction.
The upper motor that drives the upper roller and
A lower roller that comes into contact with the lower sheet from the lower side and can be sandwiched between the upper support portion and the lower sheet and moves the lower sheet in the intersecting direction.
The lower motor that drives the lower roller and
A transmission mechanism for transmitting the driving force of the lower motor to the lower roller is provided.
The adhesive device according to claim 3 or 4, wherein the lower motor is provided in the accommodating portion, and the transmission mechanism is provided in the tubular portion. A switching unit that switches the lower roller between a contact position capable of contacting the lower sheet and a separation position separated downward from the lower sheet.
It is provided with a setting unit for setting either an effective state for enabling the drive of the lower roller and an invalid state for disabling the drive of the lower roller.
The switching unit is
When the effective state is set by the setting unit, the lower roller is switched to the contact position, and the lower roller is switched to the contact position.
The adhesive device according to claim 5, wherein the lower roller is switched to the separation position when the invalid state is set by the setting unit. The upper support portion
The adhesive device according to any one of claims 1 to 6, further comprising a positioning portion for positioning a lid portion of the nozzle that closes a discharge port from which the adhesive is discharged.

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