CN108926060B - Bonding device - Google Patents

Abstract

The invention relates to an adhesive bonding device, which can improve the work efficiency of overlapping the downstream end of an upper sheet in the conveying direction with the downstream end of a lower sheet in the conveying direction after adhesive is adhered. The bonding device has a nozzle and an upper support part. The nozzle has an upper end portion for supporting the upper sheet from below and a discharge port through which the adhesive can be discharged to the lower sheet. The nozzle is movable between a first relative position and a second relative position. The first relative position and the second relative position are positions at which the nozzles are located when the discharge port is opposed to the lower sheet from the upper side. The second relative position is located more rearward than the first relative position. While the nozzle is moving between the first relative position and the second relative position, the adhesive is discharged through the discharge port, so that the adhesive adheres to the rear end portion, i.e., the lower tip end portion, of the lower sheet. The upper support portion supports a rear end portion, i.e., an upper tip end portion of the upper sheet at a position above the upper end portion during movement of the nozzle between the first relative position and the second relative position.

Description

Bonding device

Technical Field

The present invention relates to a bonding apparatus.

Background

A bonding apparatus for bonding two sheets stacked together is known. The bonding apparatus disclosed in japanese laid-open patent publication No. 2010-222140 is configured to bond an upper cloth and a lower cloth by stacking them. The bonding device has a belt, a nozzle, and a first roller. The tape is disposed below the nozzle. The lower cloth is supported by a portion of the belt extending in the front-rear direction, i.e., a conveying portion. The delivery portion extends to a position on the rear side of the nozzle. The nozzle has a discharge port for discharging the adhesive at a lower end portion. The bonding device clamps the lower cloth between the conveying part and the discharge port. The first roller is provided on the upper side of the rear end portion of the conveying portion. The first roller and the belt conveyance section vertically sandwich an upper cloth disposed behind the nozzle and a lower cloth to which the adhesive is applied, the upper cloth being disposed above the nozzle. The bonding device bonds the upper cloth and the lower cloth while conveying the clamped upper cloth and lower cloth backward. The conveying direction of the upper cloth and the lower cloth conveyed by the bonding device is the front-back direction. The downstream side in the conveying direction is the rear side.

The bonding apparatus first discharges the adhesive to the rear end of the lower cloth when the bonding operation is started. At this time, the belt brings the rear end portion of the lower cloth located forward of the first roller into contact with the discharge port. The discharge port discharges the adhesive. The tape conveys the rear end portion of the lower cloth after the adhesive is attached to the first roller. The operator overlaps the rear end portion of the upper cloth with the rear end portion of the lower cloth after the conveyance from above. However, in the above-described bonding apparatus, if the lower cloth after the adhesive is attached is not conveyed to the first roller, the operator cannot overlap the upper cloth with the lower cloth. Therefore, the work efficiency may be reduced by overlapping the rear end portion of the upper cloth with the rear end portion of the lower cloth to which the adhesive is attached.

Disclosure of Invention

The invention aims to provide an adhesive bonding device which can improve the work efficiency of overlapping the downstream end part of an upper sheet in the conveying direction with the downstream end part of a lower sheet in the conveying direction after adhesive is adhered.

The bonding apparatus according to claim 1 comprises: a lower support portion for supporting a lower sheet; a nozzle having an upper end portion for supporting an upper sheet overlapped with the lower sheet from above from below and a discharge port through which the adhesive can be discharged to the lower sheet supported by the lower support portion; a supply mechanism for supplying the adhesive to the nozzle; and a conveying mechanism that vertically sandwiches the upper sheet and the lower sheet to which the adhesive is attached at a position on a downstream side in a conveying direction of the lower sheet and the upper sheet with respect to the nozzle and conveys the upper sheet and the lower sheet to which the adhesive is attached, wherein the bonding apparatus includes a nozzle motor connected to the nozzle, and the nozzle is movable by a driving force of the nozzle motor between a first relative position at which the discharge port is located with respect to the lower sheet and a second relative position at which the discharge port is located on the downstream side in the conveying direction from a position at which the discharge port is located with respect to the first relative position and a position at which the nozzle is located with respect to a position at which the lower sheet and the upper sheet are sandwiched from a lower side in the conveying mechanism, the bonding device comprises: an upper support portion that is movable between an operating position for supporting the upper sheet at the operating position and a non-operating position that is located above a nozzle operating region that is a region through which the upper end portion of the nozzle moves between the first relative position and the second relative position passes, the non-operating position being located farther from the nozzle than the operating position; a discharge control unit that controls the supply mechanism and the nozzle motor to be driven in a state where the conveyance mechanism is stopped when the upper support unit is located at the operating position, so that the nozzle is moved from the first relative position to the second relative position, and the adhesive is discharged from the discharge port; a movement control unit that controls the nozzle motor to be driven to move the nozzle from the second relative position to the first relative position in a state where the conveyance mechanism and the supply mechanism are stopped after the discharge control unit moves the nozzle to the second relative position; and a discharge conveyance control unit that controls the conveyance mechanism and the supply mechanism to be driven after the movement control unit moves the nozzle to the first relative position and after the upper support unit moves from the operating position to the non-operating position, and that discharges the adhesive from the discharge port, sandwiches the lower sheet and the upper sheet, and conveys the lower sheet and the upper sheet. According to the above configuration, since the upper sheet supported by the upper support portion located at the operating position is located above the nozzle operating region, the upper sheet is less likely to come into contact with the nozzle that moves between the first relative position and the second relative position under the drive control of the discharge control portion and the movement control portion. Therefore, the bonding apparatus can perform drive control of the nozzle motor by the discharge control section in a state where the upper sheet is placed on the upper support section. Therefore, when the nozzle is moved from the second relative position to the first relative position by the movement control section, the downstream end portion in the conveying direction of the upper sheet is rapidly overlapped with the downstream end portion in the conveying direction of the lower sheet after the adhesive is adhered, and the bonding apparatus can improve the work efficiency of overlapping the downstream end portion in the conveying direction of the upper sheet with the downstream end portion in the conveying direction of the lower sheet after the adhesive is adhered.

In the bonding apparatus according to claim 2, the upper support part may include: a support member having a support surface for supporting the upper sheet; and a protruding member that protrudes from the support surface in a direction intersecting the support surface and is capable of contacting an end portion on a downstream side in the conveying direction of the upper sheet. The operator can position the downstream end of the upper sheet in the conveying direction against the protruding member, and the bonding apparatus can prevent the positional relationship between the lower sheet and the upper sheet superposed on each other from being deviated.

In the bonding apparatus according to claim 3, the upper support portion may include an adjustment portion that is capable of adjusting, with respect to the support member in the conveyance direction, a protruding position at which the protruding member protrudes from the support surface when the upper support portion is located at the operating position. The fixing position of the projecting member with respect to the supporting member can be adjusted in the conveying direction. Therefore, the operator can adjust the position of the downstream end in the conveying direction of the upper sheet overlapped with the lower sheet, and the bonding apparatus can make the positional relationship between the lower sheet and the upper sheet overlapped with each other less likely to be deviated.

In the bonding apparatus according to claim 4, the adjustment unit may include: a first through hole provided in the protruding member, the first through hole being longer in the conveyance direction when the upper support portion is in the operating position; a first threaded hole provided in the support member and facing the first through hole; and a first fastening member that penetrates the first through hole and is fastened to the first threaded hole. The fixing position of the projecting member with respect to the supporting member can be adjusted in the conveying direction. Therefore, the operator can adjust the position of the downstream end in the conveying direction of the upper sheet overlapped with the lower sheet, and the bonding apparatus can make the positional relationship between the lower sheet and the upper sheet overlapped with each other less likely to be deviated.

In the bonding apparatus according to claim 5, the upper support portion may include an extension member that extends from the protruding member in the conveyance direction and faces the support surface with a gap. When the upper sheet is bent in the conveying direction, the bonding apparatus also easily corrects the posture of the upper sheet to a posture along the support surface by the upper sheet entering between the extension member and the support surface. The upper sheet is superposed on the lower sheet after the adhesive is adhered in a corrected posture. Therefore, wrinkles are less likely to occur when the lower sheet and the upper sheet are attached to each other via the adhesive.

In the bonding apparatus according to claim 6, the extension member may include: a first member having an extended installation surface facing the support surface with the gap therebetween and extending parallel to the support surface; and a second member that is provided at an end portion of the first member on an upstream side in the conveying direction and extends from the first member to the upstream side in the conveying direction and to a side opposite to the side on which the support surface is provided. The operator can easily insert the upper sheet between the first member and the supporting surface from between the supporting surface and the second member. Therefore, the operator can easily dispose the upper sheet on the upper support portion located at the working position.

The bonding apparatus according to claim 7 may include: a base station; and a movable body movably coupled to the base and supporting the upper support portion so that the upper support portion is movable between an operating position and a non-operating position, wherein the movable body includes a movable member capable of coming into contact with and separating from the base, the base includes a coupling member detachably coupled to the movable member, the movable member is coupled to the coupling member when the upper support portion is in the operating position, and the movable member is detached from the coupling member when the upper support portion is in the non-operating position. The upper support section can be stably held at the operating position by coupling the movable member to the coupling member. Therefore, the operator can easily dispose the upper sheet on the upper support portion located at the working position.

In the bonding apparatus according to claim 8, the movable member and the coupling member may be magnets that can be coupled to each other by a magnetic force. The bonding device can simplify the structures of the movable body and the base.

The bonding apparatus according to claim 9 or 10 may further include a changing unit that is capable of changing a position of the upper support unit when the upper support unit is located at the operating position in the conveying direction. The operator can adjust the upper support portion located at the working position to a desired position in the conveying direction.

The bonding apparatus according to claim 11 may further include a support shaft supported by the base at a position below the lower support portion, the support shaft extending in a specific direction intersecting with a vertical direction and rotatably supporting the movable body, wherein at least a part of the support shaft is positioned directly below the nozzle operating region in the transport direction, and at least a part of the upper support portion positioned at the operating position and the support shaft are arranged in the vertical direction. The vertical position of the upper support part located at the working position is not easy to change. Therefore, the upper sheet disposed on the upper support portion is stable in the vertical position, and therefore, the bonding apparatus can further prevent the positional relationship between the lower sheet and the upper sheet that are overlapped with each other from being deviated.

In the bonding apparatus according to claim 12, the coupling member may be located above the support shaft extending in a direction orthogonal to the vertical direction and the transport direction, and the movable member may contact the coupling member from a downstream side in the transport direction. The movable member that is in contact with the coupling member is separated from the coupling member by rotating about the support shaft toward the downstream side in the conveying direction. In this case, the movable member moves downward, so that the upper support portion is easily moved from the operating position to the non-operating position immediately. Therefore, the time from when the movement control section controls the driving of the nozzle motor until the downstream end in the conveying direction of the upper sheet overlaps the lower sheet is shortened.

The bonding apparatus according to claim 13 may include: a long hole provided in the movable body and having a major diameter in a circumferential direction around the support shaft; a connecting arm having one end portion rotatably connected to the support shaft and the other end portion slidably connected to the long hole; a driving part having a rod capable of moving up and down, the driving part being supported by the base; and a link having a first end portion rotatably connected to the link and a second end portion rotatably connected to the other end portion of the connecting arm at a position closer to the one side in the conveying direction than the first end portion. Since the upper support section is moved by the drive section, the amount of work required for the operator to move the upper support section is reduced. Therefore, the bonding apparatus can improve the work efficiency of placing the upper sheet on the upper support portion.

In the bonding apparatus according to claim 14, the upper support section may be moved from the non-operating position to an intermediate position between the non-operating position and the operating position by the drive of the drive section, and a rotation angle of the coupling arm by the drive of the drive section may be equal to or greater than a rotation angle of the movable body associated with the movement of the upper support section from the non-operating position to the intermediate position and equal to or greater than a rotation angle of the movable body associated with the movement of the upper support section from the intermediate position to the operating position. After the upper support section is moved from the inoperative position to the intermediate position by the driving section, the operator can manually move the upper support section from the intermediate position to the operative position at a desired timing. Therefore, the bonding apparatus can improve the work efficiency of disposing the upper sheet on the upper support portion, and can improve the convenience.

The bonding apparatus according to claim 15 may further include a sheet supporting portion provided downstream of the conveying mechanism in the conveying direction and configured to support the lower sheet and the upper sheet bonded to each other with the adhesive, wherein the upper supporting portion located at the non-operating position is located below a downstream end of the sheet supporting portion in the conveying direction. The upper and lower sheets supported by the sheet supporting portion are less likely to contact the upper supporting portion located at the non-operating position. Therefore, the bonding apparatus can stably convey the upper sheet and the lower sheet.

The bonding apparatus according to claim 16 may include: a nozzle mounting portion that selectively mounts a plurality of the nozzles having different discharge widths, which are ranges in which the discharge ports are formed in a direction orthogonal to the vertical direction and the transport direction; a second through hole provided in the upper support portion and elongated in the orthogonal direction; a second screw hole provided in the movable body and facing the second through hole; and a second fastening member that penetrates the second through hole and is fastened to the second threaded hole. The bonding device can change the orthogonal direction position of the upper support part according to the discharge width of the nozzle. Therefore, the bonding apparatus can diversify the bonding method of the lower sheet and the upper sheet, and can make the positional relationship between the lower sheet and the upper sheet overlapped with each other less likely to be deviated.

The bonding apparatus according to claim 17 may include: a lower pinch roller that protrudes upward from the lower support portion at a position upstream of the nozzle in the transport direction and is rotatable in an axial direction of the transport direction, the lower pinch roller being in contact with the lower sheet; a supporting member that sandwiches the lower sheet between the supporting member and the lower pinch roller and supports the upper sheet from a lower side; an upper nip roller that is rotatable in an axial direction of the conveyance direction, the upper nip roller nipping the upper sheet from above between the upper nip roller and the support member; a lower motor for driving the lower grip roller; an upper motor for driving the upper nip roller; a lower detection unit configured to detect whether or not a lower specific end portion, which is an end portion of the lower sheet on one side in a predetermined direction orthogonal to the conveyance direction and the vertical direction, is located at a lower detection position, which is a predetermined position in the conveyance direction between the discharge port and the lower pinch roller; an upper detection unit configured to detect whether an upper specific end portion, which is an end portion of the upper sheet on the other side in the predetermined direction, is located at an upper detection position, which is a predetermined position between the discharge port and the upper pinch roller in the conveyance direction; and a motor control unit that controls the lower motor and the upper motor when the discharge conveyance control unit controls the conveyance mechanism and the supply mechanism, the motor control unit including: a lower motor control unit that drives the lower pinch roller to rotate the lower pinch roller in a first feeding direction to move the lower sheet to the other side when the lower detection unit detects that the lower specific end is located at the lower detection position, and drives the lower pinch roller to rotate the lower pinch roller in a second feeding direction opposite to the first feeding direction to move the lower sheet to the one side when the lower detection unit detects that the lower specific end is not located at the lower detection position; and an upper motor control unit that drives the upper pinch roller to rotate the upper pinch roller in a third feeding direction to move the upper sheet to the one side when the upper detection unit detects that the upper specific end portion is located at the upper detection position, and drives the upper pinch roller to rotate the upper pinch roller in a fourth feeding direction opposite to the third feeding direction to move the upper sheet to the other side when the upper detection unit detects that the upper specific end portion is not located at the upper detection position. When the conveying mechanism conveys the lower sheet and the upper sheet, the lower pinch roller rotates to cause the lower specific end portion to pass near the lower detection position, and the upper pinch roller rotates to cause the upper specific end portion to pass near the upper detection position. The positional relationship between the lower sheet and the upper sheet with respect to the nozzles in a specific direction is less likely to be deviated. Therefore, the bonding apparatus can stably convey the lower sheet and the upper sheet after overlapping the downstream end in the conveying direction of the upper sheet with the downstream end in the conveying direction of the lower sheet after the adhesive is adhered.

Drawings

Fig. 1 is a perspective view of the bonding apparatus 1.

Fig. 2 is a perspective view of the internal structure of the bonding apparatus 1.

Fig. 3 is another perspective view of the internal configuration of the bonding apparatus 1.

Fig. 4 is a perspective view of the nozzles 11 and 13 as viewed from below.

Fig. 5 is a perspective view of upper tip support mechanism 700 with upper support 730 in the rest position and lower support mechanism 240 with nozzle relative member 230 in the first support position.

Figure 6 is a right side view of the upper support portion 730 in the rest position.

Fig. 7 is a perspective view of the upper tip supporting mechanism 700 with the upper supporting part 730 in the operating position.

Fig. 8 is a perspective view of the upper tip supporting mechanism 700 with the upper supporting part 730 located at the operating position.

Fig. 9 is an enlarged perspective view of the upper support 730 in the working position.

Fig. 10 is a perspective view of the upper support mechanism 300.

Fig. 11 is a perspective view of the upper support mechanism 300 with the support base 305 omitted.

Fig. 12 is a front view of the lower detection mechanism 530 and the upper detection unit support mechanism 660.

Fig. 13 is a perspective view of the upper clamp mechanism 600.

Fig. 14 is an electrical block diagram of the bonding apparatus 1.

Fig. 15 is a flowchart of the main process.

Fig. 16 is a perspective view of the upper support mechanism 300 when the movable body 304 is positioned at the right end position.

Fig. 17 is a flowchart of the top coating process.

Fig. 18 is a perspective view of upper tip support mechanism 700 with upper support 730 in the rest position and lower support mechanism 240 with nozzle relative member 230 in the second support position.

Fig. 19 is a perspective view of the upper support mechanism 300 when the movable body 304 is positioned at the left end position.

Fig. 20 is a right side view of the upper sheet 6 placed on the support table 305 and the lower sheet 8 placed on the support portion 52.

Fig. 21 is a right side view of the upper support 730 in the neutral position.

Figure 22 is a right side view of the upper support 730 in the operating position.

Fig. 23 is a right side view of the nozzle 11 in a second relative position.

Fig. 24 is a right side view of the lower sheet 8 with the adhesive Z attached to the lower tip portion 8B.

Fig. 25 is a flowchart of the bonding process.

Fig. 26 is a front view of the lower specific end portion 8A located at the lower detection position P and the upper specific end portion 6A located at the upper detection position Q.

Fig. 27 is a front view of the lower specific end portion 8A not at the lower detection position P and the upper specific end portion 6A not at the upper detection position Q.

Fig. 28 is a right side view of the upper conveying rollers 12 and the lower conveying rollers 270 for conveying the upper sheet 6 and the lower sheet 8.

Detailed Description

Embodiments of the present invention will be described. The following description uses the left and right, front and back, and up and down shown by arrows in the drawings. The bonding apparatus 1 bonds two sheets together with an adhesive Z (see fig. 23). The two sheets are a lower sheet 8 and an upper sheet 6 (see fig. 19). The upper sheet 6 overlaps the lower sheet 8 from the upper side. The lower sheet 8 and the upper sheet 6 are, for example, flexible cloth. The bonding apparatus 1 of the present embodiment bonds the lower specific end 8A, which is the right end of the lower sheet 8, and the upper specific end 6A, which is the left end of the upper sheet 6, together with the adhesive Z.

The mechanical structure of the bonding apparatus 1 will be described with reference to fig. 1 to 13. As shown in fig. 1 to 3, the bonding apparatus 1 includes a base 2, a column 3, an arm 4, and a head 5. The base unit 2 is rectangular parallelepiped and fixed to a table. The column 3 extends upward from the upper surface of the seat 2 and has a columnar shape. The arm portion 4 extends leftward from the upper end of the column portion 3. The head 5 protrudes leftward from the left end of the arm portion 4.

The base unit 2 supports the fixing unit 32. The fixing portion 32 is fixed to the left surface of the base portion 2 and has a rectangular plate shape. The fixing portion 32 supports the base 33. The base 33 has a U-shape when viewed from the left side, and the base 33 extends leftward from the fixing portion 32. The base 33 has a front wall 33A. The upper end of the base 33 fixes the support portion 52. The support portion 52 extends in the left-right direction and the front-rear direction. Support portion 52 has left portion 53 and right portion 54, and support portion 52 has a substantially L-shape in plan view. The left portion 53 has a substantially rectangular shape in plan view. The left portion 53 supports the lower sheet 8 from the lower side. The left portion 53 has an opening hole 59 penetrating in the vertical direction at the rear end. The right portion 54 extends rightward from the right end front portion of the left portion 53. The length in the front-rear direction of the right portion 54 is smaller than the length in the front-rear direction of the left portion 53.

As shown in fig. 3, the head 5 supports an upper conveying mechanism 70. The upper transport mechanism 70 includes the support arm 16, the upper transport roller 12, an arm cylinder 122 (see fig. 14), and an upper transport motor 112. The support arm 16 extends forward from the rear below the head 5, and further extends forward and downward. The support arm 16 is supported by the head 5 so as to be able to swing. The support arm 16 supports the upper conveying roller 12 at a lower end portion thereof so that the upper conveying roller 12 can rotate. The upper conveying roller 12 rotates with the left-right direction as the axial direction. The arm cylinder 122 is provided inside the head 5 in a posture in the vertical direction. The arm cylinder 122 has a rod extending in the up-down direction. The rod of the arm cylinder 122 is connected to the rear end of the support arm 16. The support arm 16 is driven by the arm cylinder 122 to swing in the up-down direction.

The upper conveyance motor 112 is provided to the support arm 16. The upper conveyance motor 112 is connected to the upper conveyance roller 12 via a transmission mechanism provided inside the support arm 16. The upper feed roller 12 rotates by the power of the upper feed motor 112.

The arm cylinder 122 swings the support arm 16, and the upper transport roller 12 moves between the pinching position (see fig. 3) and the retracted position (see fig. 6). The lower sheet 8 and the upper sheet 6 are nipped between the upper conveying rollers 12 located at the nip position and a lower conveying roller 270 described later. The upper conveying rollers 12 located at the retracted position are retracted upward from the upper sheet 6.

As shown in fig. 2 to 4, the head 5 (see fig. 1) has a lever swing mechanism 22. The lever swing mechanism 22 includes a nozzle motor 113, a support shaft 26, a lever 9, and a nozzle 11. The nozzle motor 113 is a pulse motor provided on the left side of the inside of the head 5. The nozzle motor 113 has an output shaft to which a worm is fixed. The support shaft 26 extends in the left-right direction above the worm and has a cylindrical shape. The support shaft 26 supports a worm wheel 25 capable of meshing with the upper end of the worm. The support shaft 26 rotates together with the worm wheel 25 by the power of the nozzle motor 113. The support shaft 26 has a flow path of the adhesive Z therein.

The lever 9 is provided on the left side of the worm wheel 25, extends downward from the left end of the support shaft 26, and is in the form of an arm. The rod 9 has a flow path 21 therein. The flow passage 21 communicates with a flow passage inside the support shaft 26. The lower end of the rod 9 is a nozzle mounting 10. The nozzle 11 is detachable from the nozzle mounting portion 10, and the nozzle 11 is mounted to the nozzle mounting portion 10 by a screw 14. The rod 9 includes a heater 132 (see fig. 14) in the vicinity of the flow path 21. The heat of the heater 132 is conducted to the nozzle 11 through the nozzle mounting portion 10.

The nozzle 11 includes a connection portion 11A, a projection 11B, an upper end portion 11C (see fig. 5), and a discharge port 11D. The connection portion 11A protrudes downward from the nozzle mounting portion 10. The connection portion 11A has a flow path of the adhesive Z therein. The protruding portion 11B protrudes rightward from the lower end portion of the coupling portion 11A. The protruding portion 11B has a substantially triangular bar shape when viewed from the right side, and the protruding portion 11B has a flow path for the adhesive Z therein. The adhesive Z reaches the flow path of the protrusion 11B via the flow path 21 of the rod 9 and the flow path of the connection portion 11A. The upper end portion 11C is an upper end portion of the protruding portion 11B, and supports the upper sheet 6 from below. The discharge port 11D is formed on the lower surface of the projection 11B. The discharge port 11D is a plurality of circular holes arranged at substantially equal intervals in the left-right direction, and discharges the adhesive Z toward the lower sheet 8 through the discharge port 11D.

The nozzle mounting portion 10 can mount a nozzle 13 (see fig. 4) instead of the nozzle 11. The nozzle 13 has substantially the same shape as the nozzle 11. The discharge port 13D is formed in the lower surface of the nozzle 13 and is a plurality of circular holes arranged at substantially equal intervals in the left-right direction. The discharge port 13D corresponds to the discharge port 11D. The discharge width of the adhesive Z in the nozzle 11 and the discharge width of the adhesive Z in the nozzle 13 are different from each other. The discharge width of adhesive Z is a range in which discharge port 11D and discharge port 13D are formed in the left-right direction. The discharge width (dimension L1) of the adhesive Z in the nozzle 11 is larger than the discharge width (dimension L2) of the adhesive Z in the nozzle 13. The discharge left end position X1 of the adhesive Z in the nozzle 11 and the discharge left end position X2 of the adhesive Z in the nozzle 13 are different from each other in the left-right direction. The discharge left end position X1 is the left end of the formation range of the discharge port 11D when the nozzle 11 is mounted on the nozzle mounting portion 10, and the discharge left end position X2 is the left end of the formation range of the discharge port 13D when the nozzle 13 is mounted on the nozzle mounting portion 10. In the present embodiment, the discharge left end position X2 is located on the right side of the discharge left end position X1. The structure of the bonding apparatus 1 in which the nozzle 11 is attached to the nozzle attachment portion 10 will be described below.

The support shaft 26 supports the lever 9 in a manner that the lever 9 can swing. Therefore, the nozzle 11 is movable between the spaced position (see fig. 16) and the second relative position (see fig. 6) via the first relative position (see fig. 6). In fig. 6, the nozzles 11 at the first relative position are illustrated by solid lines, and the nozzles 11 at the second relative position are illustrated by two-dot chain lines. When the nozzle 11 is located at the spaced position, the discharge port 11D faces forward and downward. When the nozzle 11 is located at the second relative position, the discharge port 11D faces rearward and downward and faces the lower sheet 8 from above. At this time, the discharge port 11D faces the lower conveying roller 270. The nozzle 11 swings clockwise when viewed from the left side from the separated position about the support shaft 26, and moves to the second relative position. When the nozzle 11 is located at the first relative position, the discharge port 11D faces downward and faces the lower sheet 8 from above. In the present embodiment, the nozzle 11 located at the first relative position is located at a position lower than the position where the nozzle 11 is located at the second relative position. The passing region of the upper end portion 11C of the nozzle 11 that moves between the first relative position and the second relative position is hereinafter referred to as a nozzle operating region 15 (see fig. 6).

As shown in fig. 2 and 3, the head 5 includes a mounting portion 41 and a supply mechanism 45. The attachment portion 41 is provided at a substantially central portion of the head portion 5. The mounting portion 41 includes a cover 41A (see fig. 1), a housing portion 41B, a cover 41C, and a heater 131 (see fig. 14). The cover 41A has a substantially rectangular box shape and extends upward from the upper surface of the head 5. The cover 41A is opened in the vertical direction. The housing portion 41B is provided inside the cover 41A. The housing portion 41B has a substantially rectangular parallelepiped box shape and extends from the inside of the head portion 5 to the upper end of the cover 41A. The housing portion 41B is open at the upper side. The housing portion 41B houses the inner container therein so that the inner container can be attached and detached. The cover 41C is detachably provided above the housing portion 41B, and can open and close the upper portion of the housing portion 41B. The inner container is used for containing a hot-melt adhesive Z. The adhesive Z becomes liquid at a predetermined temperature or higher, and becomes solid at a temperature lower than the predetermined temperature. The heater 131 is provided in the housing portion 41B. The heater 131 heats the inner container housed in the housing portion 41B, melts the adhesive Z, and turns the adhesive Z into a liquid.

The supply mechanism 45 supplies the adhesive Z in the liner to the nozzle 11. The supply mechanism 45 has a pump motor 114 and a gear pump 46. The pump motor 114 is provided inside the arm unit 4 (see fig. 1). The pump motor 114 has an output shaft 114A. The gear pump 46 is provided on the front side of the mounting portion 41 and connected to the right end portion of the support shaft 26. The output shaft 114A is connected to the gear pump 46 via a gear 46A. The gear pump 46 is used to suck the adhesive Z in the liner. The gear pump 46 supplies the pumped adhesive Z to the nozzle 11 via the support shaft 26 and the rod 9.

As shown in fig. 5, the bonding apparatus 1 has a lower support mechanism 240. The lower support mechanism 240 includes a base 212, a coupling body 224, a support body 228, a holding portion 226, left and right cylinders 217, a nozzle opposing member 230, and a pair of guide portions 225. The base 212 has a substantially rectangular shape when viewed from the back surface, and is fixed to the base 33 (see fig. 1). The base 212 has a coupling member 213 at the upper right. The coupling member 213 is a plate-shaped magnet having a thickness in the front-rear direction. The coupling member 213 of the present embodiment is a permanent magnet. The coupling member 213 can be coupled to a pin 705, which will be described later, by magnetic force. The connecting member 224 is provided on the rear side of the base 212 and extends in the left-right direction. The pair of guide portions 225 are supported by the coupling body 224, and the pair of guide portions 225 extend in the left-right direction and are arranged in a bar shape with a gap in the up-down direction. The support body 228 is a plate-like member supported by the pair of guide portions 225 so as to be movable left and right. The support 228 has a pair of wall portions 227 arranged in the left-right direction. The holding portion 226 is a plate-like member extending rearward from the lower end of the coupling body 224 below the pair of guide portions 225. The holding portion 226 has a holding hole having a circular shape when viewed from the side. The left and right cylinders 217 are inserted into and held in the holding holes of the holding portion 226. The left and right cylinders 217 have rods 218 (see fig. 18). The left end of the rod 218 is connected to the lower end of the support body 228. Therefore, the rod 218 moves left and right in accordance with the driving of the left and right cylinders 217, and the support body 228 moves left and right.

A nozzle opposing member 230 is fixed to the upper end of the support body 228. The nozzle facing member 230 extends in the left-right direction and has a plate shape, and is located below the nozzle operating region 15 (see fig. 6). The nozzle opposed member 230 is opposed to the discharge port 11D (see fig. 4) of the nozzle 11 located at the first relative position or the second relative position with a gap therebetween from below. The nozzle opposed member 230 supports the lower sheet 8 from the lower side. The nozzle opposing member 230 has a left support portion 231 and a right support portion 236. The left support portion 231 has an exposure hole 229 and a lower detection hole 235 (see fig. 7). The exposure hole 229 penetrates the rear end portion of the left support portion 231 in the vertical direction, extends in the left-right direction in a plan view, and has a rectangular shape. The lower detection hole 235 penetrates the right front side of the exposure hole 229 in the vertical direction. The lower detection hole 235 is located on the left side of the opening hole 59 (see fig. 3). The lower detection hole 235 has a long circular shape that is long in the left-right direction in a plan view. The inner region of the lower detection hole 235 includes a lower detection position P (see fig. 26) described later. The upper surface of the left support 231 is planar. The right support portion 236 is provided to the right of the left support portion 231. The upper surface of the right support portion 236 is arcuate about the support shaft 26 (see fig. 2), and is curved rearward and upward (see fig. 23).

The nozzle opposing member 230 moves between the first support position (see fig. 5) and the second support position (see fig. 18) by the support body 228 moving left and right along the pair of guide portions 225 with the driving of the left and right cylinders 217. The first support position is the right end of the movable range of the nozzle relative member 230. When the nozzle opposing member 230 is located at the first support position, the left support 231 is located directly below the nozzle operating region 15 (see fig. 6). The second support position is the left end of the movable range of the nozzle relative member 230. When the nozzle opposing member 230 is located at the second support position, the right support portion 236 is located directly below the nozzle working area 15. When the bonding process (see fig. 25) described later is performed, the nozzle opposed member 230 is located at the first support position. When the tip end coating process (see fig. 17) described later is performed, the nozzle opposing member 230 is positioned at the second support position.

As shown in fig. 5, the bonding apparatus 1 has a lower conveyance mechanism 260. The lower conveying mechanism 260 is supported by the support body 228. The lower conveyance mechanism 260 has a lower conveyance motor 262, a pulley 264, a conveyance shaft 268, a belt 266, and a lower conveyance roller 270. The lower conveyance motor 262 is fixed to the right surface of the wall portion 227 on the right side. The lower conveyance motor 262 has an output shaft 262A in the left-right direction. The output shaft 262A projects leftward from the wall portion 227 on the right side. The pulley 264 is fixed to the left end of the output shaft 262A. The conveying shaft 268 extends in the left-right direction below the exposure hole 229, and the conveying shaft 268 is rotatably supported by the upper end portion of the support body 228. The conveyance shaft 268 is fixedly connected to a pulley.

The belt 266 is mounted on the pulley 264 and the connecting pulley. The lower transport roller 270 is fixed to the transport shaft 268 on the left side of the coupling pulley, and protrudes upward from the exposure hole 229. The lower conveyance roller 270 rotates together with the conveyance shaft 268 by the driving force of the lower conveyance motor 262. The lower conveying roller 270 contacts the upper conveying roller 12 located at the nip position from the lower side. That is, the upper conveying roller 12 contacts the lower conveying roller 270 from the upper side, and is positioned at the nip position.

The lower conveyance mechanism 260 moves left and right together with the nozzle opposing member 230 in accordance with the driving of the left and right cylinders 217. When the nozzle opposing member 230 is located at the first support position (see fig. 5), the lower transport roller 270 is located below the upper transport roller 12. When the nozzle opposing member 230 is located at the second support position (see fig. 18), the lower feed roller 270 is located on the left side with respect to the upper feed roller 12.

Hereinafter, when the upper conveyance mechanism 70 and the lower conveyance mechanism 260 are collectively described, they are collectively referred to as a conveyance mechanism 80 (see fig. 2). The conveying mechanism 80 conveys the lower sheet 8 and the upper sheet 6 from the front side to the rear side. Therefore, in the present embodiment, the conveyance direction of the lower sheet 8 and the upper sheet 6 is the front-rear direction, the upstream side in the conveyance direction is the front side, and the downstream side in the conveyance direction is the rear side. In the conveying mechanism 80, the discharge port 11D of the nozzle 11 located at the second relative position is opposed to a position where the lower sheet 8 and the upper sheet 6 are sandwiched from below.

As shown in fig. 6, the bonding apparatus 1 has a sheet supporting portion 280. The sheet supporting portion 280 is fixed to the upper end of each of the pair of wall portions 227 of the support body 228 and has a plate shape, and the sheet supporting portion 280 is positioned on the rear side of the upper conveying roller 12 and the lower conveying roller 270. The sheet supporting portion 280 supports the lower sheet 8 and the upper sheet 6 bonded to each other with the adhesive Z from below. The sheet support portion 280 has an upper plate portion 280A and a lower plate portion 280B. The upper plate portion 280A extends from the front upper side to the rear lower side along the upper portions of the pair of wall portions 227. The lower plate portion 280B extends rearward and downward from the lower end of the upper plate portion 280A. The slope of the lower plate portion 280B is steeper than the slope of the upper plate portion 280A.

As shown in fig. 5 to 7, the bonding apparatus 1 includes an upper tip supporting mechanism 700. The upper distal end support mechanism 700 supports an upper distal end portion 6B (see fig. 20) which is a rear end portion of the upper specific end portion 6A (see fig. 26). The upper distal end support mechanism 700 includes a support shaft 701, a movable body 702, a pin 705, a drive mechanism 720, and an upper support portion 730. The support shaft 701 extends in the left-right direction, and is fixed to the upper right portion of the base 212 at a position lower than the nozzle opposing member 230. The coupling member 213 is located rearward and upward relative to the support shaft 701. At least a part of the support shaft 701 is located directly below the nozzle operating region 15 in the front-rear direction (see fig. 6). In the present embodiment, the rear portion of the support shaft 701 is located directly below the nozzle operating region 15 in the front-rear direction, and the front portion of the support shaft 701 is located on the front side of the nozzle operating region 15 in the front-rear direction. A direction orthogonal to the support shaft 701 and away from the support shaft 701 is hereinafter referred to as a radial direction.

The movable body 702 is rotatably supported by the support shaft 701. The movable body 702 has an arm portion 703 and a fixing portion 704. The arm portion 703 is rotatably connected to the support shaft 701. The arm portion 703 is plate-shaped having a thickness in the left-right direction, and extends in the radial direction from the support shaft 701. The arm portion 703 has a long hole 703A and a coupling hole 703B. The elongated hole 703A penetrates the arm portion 703 in the left-right direction. The long hole 703A has a long diameter in the circumferential direction around the support shaft 701. When viewed from the right side, an end portion of the long hole 703A on the counterclockwise direction side with respect to the support shaft 701 is a start end portion 703C, and an end portion opposite to the start end portion 703C is an end portion 703D. The coupling hole 703B is a hole having a circular shape when viewed from the side, and the coupling hole 703B is provided between the elongated hole 703A and the support shaft 701. The fixing portion 704 is provided at the radial side end of the arm portion 703, and is orthogonal to the arm portion 703 and has a plate shape. The fixing portion 704 has two screw holes 704A (see fig. 9) aligned in the left-right direction.

The pin 705 (see fig. 7) is cylindrical in the left-right direction. In the present embodiment, the pin 705 is made of metal and is a magnet that can be coupled to the coupling member 213 of the base 212 by magnetic force. The pin 705 has a first shaft portion 705A and a second shaft portion 705B. The first shaft portion 705A is rotatably fitted in the coupling hole 703B. The second shaft portion 705B extends leftward from the left end of the first shaft portion 705A. The second shaft portion 705B is eccentric with respect to the first shaft portion 705A. The second shaft portion 705B is coupled to the coupling member 213 of the base 212 by magnetic force as the movable body 702 rotates. Hereinafter, the coupling hole 703B and the first shaft 705A will be collectively referred to as a changing portion 710.

As shown in fig. 5 and 6, the driving mechanism 720 includes a connecting arm 721, a supporting portion 722, an upper end cylinder 725, a fixing portion 727, and a link 728. The coupling arm 721 is provided on the right side of the arm portion 703 of the movable body 702, and is rotatably supported by the support shaft 701. The link arm 721 has one end 721A and the other end 721B. The one end 721A is rotatably connected to the support shaft 701. The other end 721B is slidably connected to the long hole 703A.

The support portion 722 is a plate-shaped member extending in the vertical direction and having an upper end bent rearward. The support portion 722 is fixed to a rear portion of the upper right portion of the base 212. The support portion 722 has a support hole penetrating in the vertical direction at the rear end portion. The upper head cylinder 725 is inserted into the support hole of the support portion 722 and supported by the base 212. The upper head cylinder 725 has a rod 725A extending downward. The rod 725A is movable up and down and moves up and down between an extended position (see fig. 6) and a retracted position (see fig. 21). In fig. 21, the lever 725A in the extended position is illustrated by a two-dot chain line, and the lever 725A in the retracted position is illustrated by a solid line. In the present embodiment, the extended position is the lower end of the movable range of rod 725A, and the retracted position is the upper end of the movable range of rod 725A.

Fixing portion 727 is fixed to the lower end of rod 725A and projects rearward from rod 725A. The link 728 has a plate shape having a thickness in the left-right direction. The link 728 has a first end 728A and a second end 728B. The first end 728A is rotatably connected to a rear end of the fixing portion 727. That is, the first end 728A is rotatably connected to the rod 725A via the fixing portion 727. The second end 728B is rotatably connected to the other end 721B of the connecting arm 721 at a position rearward of the first end 728A.

The power of the upper head cylinder 725 is transmitted to the arm portion 703 via the fixing portion 727, the link 728, the connecting arm 721, and the long hole 703A. Therefore, the movable body 702 rotates about the support shaft 701 as the upper end cylinder 725 is driven. As the movable body 702 rotates, the second shaft portion 705B (see fig. 7) of the pin 705 comes into contact with and separates from the coupling member 213. The pin 705 is coupled to the coupling member 213 by the second shaft portion 705B being coupled to the coupling member 213 from the rear side by magnetic force. When the pin 705 is coupled to the coupling member 213, the movable body 702 is held in position by coupling between the second shaft portion 705B and the coupling member 213 by magnetic force.

The upper support portion 730 is described with reference to fig. 7 to 9. The upper support portion 730 is provided on the fixing portion 704. The upper support portion 730 rotates between the operating position (see fig. 7) and the non-operating position (see fig. 6) by the rotation of the movable body 702 in accordance with the driving of the upper head cylinder 725. The upper support portion 730 located at the operating position is located above the nozzle operating region 15. The upper support portion 730 located at the non-operating position is separated from the operating position to a position rearward and downward of the nozzle operating region 15. In the present embodiment, the upper support portion 730 located at the non-operating position is located forward and downward with respect to the rear end portion of the lower plate portion 280B of the sheet support portion 280 (see fig. 6). In the following description, the attitude of the upper support portion 730 located at the working position is used as a reference.

As shown in fig. 9, the upper support 730 has a support member 740, a protruding member 750, an extending member 760, two fastening members 745, two fastening members 756, and two fastening members 799. The supporting member 740 is fixed to the fixing portion 704. The support member 740 has a plate-like body 741, a support surface 742, two through holes 743, and two threaded holes 744. The plate-like body 741 extends in the left-right direction and obliquely extends from the upper rear side to the lower front side. The left end of the plate-like body 741 is positioned to the right of the connection portion 11A of the nozzle 11. The plate-like body 741 is located above the nozzle operation region 15 (see fig. 6). The support surface 742 is the upper surface of the plate-like body 741, and is planar. The support surface 742 supports the upper distal end portion 6B (see fig. 23). The two through-holes 743 are holes long in the left-right direction, and the two through-holes 743 penetrate the plate-like body 741 in the thickness direction. The two through holes 743 face the two screw holes 704A from the upper side. The two screw holes 744 are provided on the front side of the two through holes 743. The two fastening members 745 pass through the two through holes 743 and are fastened to the two threaded holes 704A. Accordingly, the supporting member 740 is fixed to the fixing portion 704.

The projecting member 750 is fixed to the support surface 742 and projects upward from the support surface 742. The projecting member 750 has a plate-like body 751, two through-holes 752, and two screw holes 753. The plate-like body 751 extends in the left-right direction, and faces and contacts the support surface 742. The two through holes 752 are arranged in the left-right direction and penetrate the right portion of the plate-like body 751 in the thickness direction. The through hole 752 has a long diameter in the front-rear direction. The two through holes 752 are opposite the two threaded holes 744. Two screw holes 753 are provided in the left portion of the plate-like body 751. The two fastening members 756 extend through the two through holes 752 and are fastened to the two threaded holes 744. Thus, the protruding member 750 is fixed to the supporting member 740.

The extension member 760 is fixed to the left portion of the plate-like body 751. The extension member 760 has a first plate 761, a second plate 762, and two through holes 763. The first plate-like body 761 is in contact with the upper surface of the left portion of the plate-like body 751 of the projection member 750, and linearly extends forward and downward from the plate-like body 751. The lower surface of the front portion of the first plate-like body 761 is an extended setting surface 761A. The extension plane 761A is located above the supporting plane 742 of the supporting member 740, and faces the supporting plane 742 with a gap. The extension plane 761A is parallel to the support plane 742. The second plate 762 is provided at the front end of the first plate 761 and extends upward and forward from the front end of the first plate 761. The two through holes 763 penetrate the first plate-like body 761 in the thickness direction. The two through holes 763 are opposite to the two screw holes 753. The two fastening members 799 penetrate the two through holes 763 and are fastened to the two screw holes 753. Thus, the extension member 760 is fixed to the protrusion member 750.

The upper support mechanism 300 will be described with reference to fig. 10 and 11. The upper support mechanism 300 is provided on the base 33 and supports the upper sheet 6. The upper support mechanism 300 includes a guide member 302, a movable body 304, a support table 305, a support member 315, a positioning member 310, a base cylinder 309, and a changing mechanism 320.

The guide members 302 are fixed to the inside of the base 33, extend in the left-right direction, and have a rod shape, and two guide members 302 are provided with a gap in the front-rear direction. The moving body 304 is supported by the guide member 302 so as to be movable left and right. The upper end of the moving body 304 is flat and positioned above the support portion 52. The support base 305 is a plate having a substantially rectangular shape in plan view, and is fixed to the upper end of the moving body 304. The support base 305 moves in the left-right direction together with the moving body 304. The support member 315 is supported by the upper end of the moving body 304, and protrudes leftward from the left rear portion of the moving body 304.

The support member 315 extends in the left-right direction and the front-rear direction, and is parallel with respect to the support portion 52. The support member 315 has an upper surface 315A, a lower surface 315B, a receiving hole 315C, an upper reflection portion, and a lower reflection portion. The upper surface 315A is a plane for supporting the upper sheet 6 from below, and is located at the same vertical position as the upper end 11C of the nozzle 11 (see fig. 9). The lower surface 315B forms a lower end of the support member 315. The front portion of the lower surface 315B is located lower than the rear portion of the lower surface 315B. The receiving hole 315C is a recess that is long in the left-right direction, and the receiving hole 315C is formed in the left rear portion of the upper surface 315A. The upper reflection portion and the lower reflection portion are formed of a material capable of reflecting light. The upper reflecting portion is housed inside the housing hole 315C and is located below the upper surface 315A. The lower reflecting portion is provided at the rear of the lower surface 315B.

The positioning member 310 is fixed to a recess 36 formed at an upper end of the front wall 33A of the base 33. The recess 36 is recessed downward from the upper end of the front wall 33A of the base 33. The positioning member 310 is positioned below the right portion 54 of the support portion 52 (see fig. 2). The movable body 304 can be brought into contact with and separated from the right end of the positioning member 310.

The movable body 304 is movable between a left end position (see fig. 10) and a right end position (see fig. 16). The left end position is a left-right position where the moving body 304, which is positioned by being brought into contact with the positioning member 310, is located. In the present embodiment, the positioning member 310 restricts the movement of the support base 305 in the left direction by the contact of the movable body 304 with the right end of the positioning member 310. When the moving body 304 is located at the left end position, the support member 315 is located in front of the nozzle 11 at the first relative position, and enters the passing region of the nozzle 11 when moving between the leaving position and the first relative position. When the moving body 304 is positioned at the left end position, the rear portion of the lower surface 315B faces the lower detection hole 235 of the nozzle opposing member 230 positioned at the first support position from above, and the lower reflection portion is positioned above the area inside the lower detection hole 235. The right end position is a left-right position where the movable body 304 is located apart from the positioning member 310 to the right. When the movable body 304 is positioned at the right end position, the support member 315 is positioned rightward from the passing region of the nozzle 11.

The base cylinder 309 is a cylinder provided inside the base 33, and has a rod extending in the left-right direction. The rod of the base cylinder 309 is connected to the lower portion of the moving body 304 at the rear of the positioning member 310. Therefore, the moving body 304 moves between the left end position and the right end position by the left-right movement of the rod of the base cylinder 309.

The changing mechanism 320 can change the left end position of the movable body 304 by changing the contact position of the positioning member 310 and the movable body 304 in the left-right direction. The changing mechanism 320 has a through hole 322, two screw holes 333, and two screw members 334. The through hole 322 is provided in the positioning member 310 and is positioned in front of the front wall 33A of the base 33. The through hole 322 penetrates the positioning member 310 in the front-rear direction and is long in the left-right direction. The two screw holes 333 are holes having a circular shape in front view provided in the front wall 33A. The two screw holes 333 are opposed to the through-hole 322 from the rear. Two screw members 334 penetrate the through hole 322 from the front and are fastened to the two screw holes 333.

The lower clamp mechanism 500 is described with reference to fig. 10 to 12. The lower clamp mechanism 500 includes a lower support body 502, a lower motor support member 504, a lower arm 507, a lower rotation shaft 506 (see fig. 12), a lower clamp roller 501, a lower motor 505, a connection shaft 508, a lower drive connection portion, a lower holding body 515, a lower elastic member 509, and a lower cylinder 525.

The lower support body 502 is fixed to the base 33, has a box shape, and is positioned below the left portion 53 of the support portion 52. The lower motor support member 504 extends in the front-rear direction, penetrates the lower support body 502, and is rotatably supported by the lower support body 502. The center of rotation of the lower motor support member 504 is a lower axis U extending in the front-rear direction. Lower motor support member 504 protrudes forward and rearward with respect to lower support body 502 and is located on the lower side of support portion 52. The lower motor support member 504 has a lower shaft insertion hole in the center. The lower shaft through hole has a circular shape centered on the lower axis U in front view, and penetrates in the front-rear direction.

Lower arm 507 is fixed to the rear end of lower motor support member 504 and extends from lower motor support member 504 to the upper right side. The lower arm 507 is rotatable about the lower axis U together with the lower motor support member 504. A distal end portion 507A of the lower arm 507 is positioned inside the opening 59 in a plan view (see fig. 9). The lower arm 507 has a lower hole at a base end portion. The lower hole is circular and coaxial with the lower shaft through hole, and penetrates in the front-rear direction. The lower rotary shaft 506 (see fig. 12) protrudes rearward from the distal end portion 507A and is rotatable in the front-rear direction as an axial direction. The lower grip roller 501 is fixed to the rear end of the lower rotating shaft 506. That is, the lower pinch roller 501 is rotatable in the front-rear direction as an axial direction together with the lower rotation shaft 506.

The lower pinch roller 501 is located inside the opening hole 59 in a plan view (see fig. 9). When the moving body 304 is positioned at the left end position (see fig. 10), the lower sheet 8 can be nipped between the lower nip roller 501 and the front portion of the lower surface 315B of the support member 315. The lower pinch roller 501 is rotatable about the lower axis U together with the lower motor support member 504. The lower grip roller 501 is movable between a lower contact position and a lower separation position. In fig. 12, the lower grip roller 501 at the lower contact position is illustrated by a solid line, and the lower grip roller 501 at the lower separation position is illustrated by a two-dot chain line. When the lower pinch roller 501 is located at the lower contact position, the upper end of the lower pinch roller 501 is located at the same vertical position as the front portion of the lower surface 315B. When the lower pinch roller 501 is located at the lower separation position, the upper end of the lower pinch roller 501 is located below the front portion of the lower surface 315B.

The lower motor 505 is provided in front of the lower support body 502 and is rotatable about the lower axis U together with the lower motor support member 504. The lower motor 505 has a housing 503 and an output shaft. The housing 503 is fixed to the front end of the lower motor support member 504. The output shaft protrudes rearward from the housing 503. An output shaft of the lower motor 505 penetrates the inside of the lower motor support member 504. The coupling shaft 508 protrudes leftward from the front end of the lower motor support member 504. The driving force of the lower motor 505 is transmitted to the lower pinch roller 501 via the lower motor support member 504 and a lower driving coupling portion provided inside the lower arm 507, and the lower motor 505 can drive the lower pinch roller 501.

As shown in fig. 10, the lower holder 515 is a plate-like member having an L-shape when viewed from the back, and the lower holder 515 is fixed to the left surface of the lower support 502. The lower holder 515 has a through hole 516. The through hole 516 penetrates the upper portion of the lower holder 515 in the left-right direction, and is long in the up-down direction. The connecting shaft 508 penetrates the through hole 516. The lower holder 515 fixes the fixed shaft 521 at the left end. The fixed shaft 521 protrudes upward from the left end of the lower holder 515. The fixed shaft 521 has a coupling hole at an upper end. The coupling hole is opened in a direction orthogonal to the axis of the fixed shaft 521.

The lower elastic member 509 is, for example, an extension spring elastically deformable in the vertical direction. The upper end of the lower elastic member 509 is engaged with the left end of the coupling shaft 508, and the lower end of the lower elastic member 509 is engaged with the coupling hole of the fixed shaft 521. The lower elastic member 509 is disposed in a stretched state. The lower elastic member 509 biases the lower motor support member 504 counterclockwise in the front view about the lower axis U.

The lower cylinder 525 is fixed to the left surface of the upper right portion of the lower holder 515 and is located below the connecting shaft 508. The lower cylinder 525 has a lower rod 526. The lower rod 526 is movable in the axial direction, i.e., the up-down direction. The lower cylinder 525 moves the lower rod 526 up and down between a lower biasing position (see fig. 16) and a lower retracted position (see fig. 10). The lower biasing position is the upper end of the movable range of lower rod 526, and the lower retracted position is the lower end of the movable range of lower rod 526. The lower lever 526 at the downward biasing position biases the coupling shaft 508 upward. That is, the lower lever 526 positioned at the lower biasing position biases the lower motor support member 504 clockwise in the front view about the lower axis U, and holds the lower pinch roller 501 at the lower separation position. The lower rod 526 at the downward retreated position is separated downward from the coupling shaft 508. At this time, the lower elastic member 509 urges the lower motor support member 504, and holds the lower pinch roller 501 at the lower contact position.

The lower detection mechanism 530 is explained with reference to fig. 12. The lower detection mechanism 530 detects whether or not the lower specific end portion 8A (see fig. 19) of the lower sheet 8 is located at a lower detection position P described later. The lower detection mechanism 530 has a lower fixing member 532 and a lower detection part 535. Lower fixing member 532 is fixed to base 33 below support portion 52 (see fig. 2). The lower detection part 535 is an optical sensor fixed to the lower fixing member 532. When the nozzle opposing member 230 is located at the first supporting position, the lower sensing part 535 is located below an inner area of the lower sensing hole 235 of the nozzle opposing member 230. The lower detector 535 has a lower light emitting part 535A (see fig. 14) and a lower light receiving part 535B (see fig. 14). The lower light-emitting portion 535A and the lower light-receiving portion 535B are provided at the same height position with each other. The lower light-emitting portion 535A emits light toward an inner area of the lower detection hole 235. The lower light receiving part 535B can receive light emitted from the lower light emitting part 535A and reflected by the lower reflecting part.

When the nozzle opposed member 230 is located at the first support position, the lower specific end portion 8A located above the lower detection hole 235 blocks the light emitted from the lower light emitting portion 535A. In this case, the lower light-receiving section 535B does not receive the light emitted from the lower light-emitting section 535A. When the moving body 304 is located at the left end position and the lower specific end portion 8A is not located above the lower detection hole 235, the lower reflection portion reflects the light downward, and the lower light-receiving portion 535B receives the light. Therefore, the lower detection part 535 can detect whether the lower specific end 8A is positioned above the lower detection hole 235. Hereinafter, a position located directly above the lower light emitting portion 535A in the inner region of the lower detection hole 235 when the nozzle opposing member 230 is located at the first support position is referred to as a lower detection position P. The lower detection position P is a predetermined front-rear position between the discharge port 11D of the nozzle 11 and the lower pinch roller 501 at the first relative position, and is a right-left position with respect to the lower pinch roller 501.

The upper clamp mechanism 600 is explained with reference to fig. 13. The upper clamp mechanism 600 includes a fixed base 641, an upper coupling member 642, an engagement pin 647, an upper support 602, an upper motor support member 604, an upper arm 607, an upper rotation shaft 606, an upper clamp roller 601, an upper motor 605, a contact portion 608, an upper elastic member 609, and an upper air cylinder 625.

The fixed base 641 is a plate-like member fixed to the arm 4. The upper connecting member 642 is a plate-shaped member fixed to the upper surface of the right front portion of the fixed base 641. The upper coupling member 642 has a plurality of engagement holes 649. The plurality of engaging holes 649 are positioned in front of the fixed base 641 and arranged at equal intervals in the left-right direction. For example, the number of the engagement holes 649 is three. The engagement pin 647 is a pin that selectively engages with any one of the plurality of engagement holes 649. The engaging pin 647 in fig. 13 engages with the right engaging hole 649. The engaging pin 647 protrudes downward from the upper coupling member 642.

The upper support 602 is fixed to the lower surface of the fixed base 641 on the left of the upper connecting member 642, and the upper support 602 has a box shape. The upper supporter 602 is coupled to the upper coupling member 642. The upper motor support member 604 extends in the front-rear direction, penetrates the upper support body 602, and is rotatably supported by the upper support body 602. The center of rotation of the upper motor support member 604 is an upper axis W extending in the front-rear direction. The upper motor support member 604 protrudes forward and rearward with respect to the upper support body 602. The upper motor support member 604 has a coupling pin 604A at the front end. The coupling pin 604A protrudes to the left upper side of the engagement pin 647. The upper motor support member 604 has an upper shaft through hole in the center. The upper shaft through hole has a circular shape centered on the upper axis W in front view, and penetrates in the front-rear direction.

The upper arm 607 is fixed to the front end of the upper motor support member 604 and extends downward and leftward from the upper motor support member 604. The upper arm 607 is rotatable about the upper axis W together with the upper motor support member 604. The distal end portion 607A of the upper arm 607 is positioned above the opening hole 59. The upper arm 607 has an upper hole at a base end portion. The upper hole is circular and coaxial with the upper shaft through hole, and penetrates in the front-rear direction. The upper rotating shaft 606 protrudes rearward from the distal end portion 607A and is rotatable in the front-rear direction as an axial direction. The upper nip roller 601 is supported by a rear end portion of the upper rotating shaft 606 and is rotatable in the front-rear direction as an axial direction together with the upper rotating shaft 606. The upper pinch roller 601 is positioned above the support member 315, and is rotatable about the upper axis W together with the upper motor support member 604.

The upper nip roller 601 is movable between an upper contact position (see fig. 13) and an upper separation position (see fig. 12). In fig. 12, the upper nip roller 601 located at the upper contact position is illustrated by a solid line, and the upper nip roller 601 located at the upper separation position is illustrated by a two-dot chain line. When the upper pinch roller 601 is located at the upper contact position, the lower end of the upper pinch roller 601 is located at the same vertical position as the upper surface 315A of the support member 315. When the moving body 304 is located at the left end position and the upper pinch roller 601 is located at the upper contact position, the upper pinch roller 601 contacts the upper surface 315A of the support member 315. When the upper pinch roller 601 is located at the upper separation position, the lower end of the upper pinch roller 601 is located above the upper surface 315A.

The upper motor 605 is provided behind the upper support body 602, and the upper motor 605 has a housing 605A and an output shaft. The housing 605A is fixed to the rear end of the upper motor support member 604. Therefore, the upper motor 605 can rotate about the upper axis W together with the upper motor support member 604. The output shaft of the upper motor 605 projects forward from the housing 605A. The output shaft of the upper motor 605 penetrates the inside of the upper motor support member 604. The contact portion 608 is a plate-like member having an L-shape in front view, and is fixed to the right surface of the rear end of the upper motor support member 604. The driving force of the upper motor 605 is transmitted to the upper pinch roller 601 via the upper motor support member 604 and an upper drive coupling portion provided inside the upper arm 607, and the upper motor 605 can drive the upper pinch roller 601.

The upper elastic member 609 is, for example, a tension spring that is elastically deformable in the left-right direction. The left end of the upper elastic member 609 is engaged with the coupling pin 604A, and the right end of the upper elastic member 609 is engaged with the engagement pin 647. That is, the upper elastic member 609 couples the upper motor support member 604 and the upper support 602. The upper elastic member 609 is disposed in a stretched state. The upper elastic member 609 urges the upper motor support member 604 clockwise in the front view about the upper axis W. That is, the upper elastic member 609 urges the upper motor support member 604 in a direction from the upper contact position toward the upper separation position. The upper motor support member 604 receives a downward turning force due to the weight of the upper arm 607, the upper drive coupling portion, and the like. The upper elastic member 609 can reduce the rotational force.

The upper cylinder 625 is fixed to the lower surface of the right rear portion of the fixed table 641. The upper cylinder 625 has an upper rod 626. The upper rod 626 is located above the right portion of the contact portion 608, and is movable in the axial direction, i.e., the vertical direction. The upper cylinder 625 moves the upper rod 626 up and down between an upper biasing position and an upper retracting position (see fig. 13). The upper urging position is the lower end of the movable range of the upper lever 626, and the upper retreating position is the upper end of the movable range of the upper lever 626. The upper lever 626 at the upper biasing position biases the abutting portion 608 downward. That is, the upper lever 626 positioned at the upper biasing position biases the upper motor support member 604 clockwise in the front view about the upper axis W, and holds the upper pinch roller 601 at the upper separation position. The upper lever 626 at the upper retracted position is separated upward from the contact portion 608, and holds the upper pinch roller 601 at the upper contact position.

The upper detection unit support mechanism 660 will be described with reference to fig. 13. The upper detection part supporting mechanism 660 has an upper fixing member 632, a holding member 633, a through hole 638, two fastening holes 639, and two fastening members 637. The upper fixing member 632 is fixed to the arm 4 (see fig. 1). The upper fixing member 632 is a plate-like member extending downward from the arm portion 4. Two fastening holes 639 are provided in the lower end portion of the upper fixing member 632 in a left-right direction. The holding member 633 is provided in front of the lower end portion of the upper fixing member 632, and extends in the left-right direction. The penetrating hole 638 penetrates the right portion of the holding member 633 in the front-rear direction. The through hole 638 is long in the left-right direction and faces the two fastening holes 639 from the front. Two fastening members 637 penetrate the through hole 638 from the front. The two fastening members 637 are fastened to the two fastening holes 639, respectively. Thus, the holding member 633 is fixed to the upper fixing member 632.

The holding member 633 holds the upper detection part 635. The upper detection part 635 is a well-known optical sensor. When the moving body 304 is positioned at the left end position, the upper detection portion 635 is positioned above the inner region of the receiving hole 315C (see fig. 10) of the support member 315. The upper detection unit 635 includes an upper light emitting unit 635A (see fig. 14) and an upper light receiving unit 635B (see fig. 14). The upper light emitting portion 635A and the upper light receiving portion 635B are provided at the same height position with each other. The upper light emitting portion 635A emits light toward the inner region of the receiving hole 315C. The upper light-receiving portion 635B can receive light emitted by the upper light-emitting portion 635A and reflected by the upper reflecting portion.

The upper specific end portion 6A (see fig. 19) located above the receiving hole 315C of the support member 315 blocks light emitted from the upper light emitting portion 635A. In this case, the upper light-receiving part 635B does not receive the light emitted from the upper light-emitting part 635A. When the moving body 304 is located at the left end position and the upper specific end portion 6A is not located above the housing hole 315C, the upper reflecting portion reflects light upward, and the upper light receiving portion 635B receives the light. Therefore, the upper detection portion 635 can detect whether or not the upper specific end portion 6A is positioned above the housing hole 315C. Hereinafter, a position located directly below the upper light emitting unit 635A in the area inside the housing hole 315C when the moving body 304 is located at the left end position is referred to as an upper detection position Q (see fig. 26). The upper detection position Q is a predetermined front-rear position between the discharge port 11D of the nozzle 11 and the upper pinch roller 601 at the first relative position, and is a left-right position on the left side of the upper pinch roller 601. The upper detection position Q is substantially the same front-rear position as the lower detection position P.

The electrical structure of the bonding apparatus 1 is explained with reference to fig. 14. The bonding apparatus 1 includes a control apparatus 100. The control device 100 has a CPU101, a ROM102, a RAM103, a storage device 104, a drive circuit 105, and a drive circuit 106. The CPU101 collectively controls the operation of the bonding apparatus 1. The CPU101 is connected to the ROM102, RAM103, storage device 104, switch 19, pedal 7, lower detection unit 535, upper detection unit 635, drive circuit 105, drive circuit 106, heater 131, and heater 132. The ROM102 stores programs for executing various processes. The RAM103 temporarily stores various information. The storage device 104 is a nonvolatile storage device for storing various setting values and the like. The switch 19 is provided at a lower portion of the front surface of the head 5. The operator inputs various instructions to the bonding apparatus 1 by operating the switch 19. The switch 19 outputs information indicating various instructions to the CPU101 as a detection result. The pedal 7 is provided at a lower portion of the table, and the pedal 7 is operated by a foot of an operator. The operator inputs an instruction to start or end the bonding process, which will be described later, via the pedal 7. The pedal 7 outputs information indicating a start instruction or an end instruction of the bonding process to the CPU101 as a detection result. The lower detection section 535 and the upper detection section 635 output the detection results to the CPU 101.

The CPU101 sends control signals to the drive circuit 105 to control the driving of the lower conveyance motor 262, the upper conveyance motor 112, the nozzle motor 113, the pump motor 114, the lower motor 505, and the upper motor 605, respectively. The CPU101 sends control signals to the drive circuit 106 to control the driving of the arm cylinder 122, the left and right cylinders 217, the upper head cylinder 725, the base cylinder 309, the lower cylinder 525, and the upper cylinder 625, respectively. The CPU101 drives the heaters 131 and 132. The heater 131 heats the adhesive Z in the inner container. The heater 132 heats the adhesive Z flowing inside the rod 9 toward the discharge port 11D. The adhesive Z becomes liquid by being heated by the heaters 131 and 132.

The main processing will be described with reference to fig. 11, 13, and 15 to 28. When the operator inputs an instruction to start the main process to the switch 19, the CPU101 reads out a program for executing the main process from the ROM102, and starts the main process. Before the main process is started, the bonding apparatus 1 is in an initial state (see fig. 1, 5, and 13). When the bonding apparatus 1 is in the initial state, the nozzle 11 is located at the first relative position, the nozzle relative member 230 is located at the first support position, the upper conveyance roller 12 is located at the nip position, the lower lever 526 is located at the lower retreat position, the upper lever 626 is located at the upper retreat position, the lower nip roller 501 is located at the lower contact position, the upper nip roller 601 is located at the upper contact position, and the movable body 304 is located at the left end position.

As shown in fig. 15 and 16, the CPU101 executes initialization processing (S10). In the initialization process, the CPU101 controls the driving of the heaters 131 and 132. The adhesive Z becomes liquid by being heated by the heaters 131 and 132. The CPU101 determines whether a roller movement instruction is detected based on the detection result of the switch 19 (S11). The roller movement instruction is an instruction for moving the upper conveying roller 12, the lower pinch roller 501, and the upper pinch roller 601, respectively. Before detecting the roller movement instruction (S11: no), the CPU101 stands by. When the operator inputs a roller movement instruction to the switch 19 (yes in S11), the CPU101 controls the arm cylinder 122 (see fig. 14) to be driven, and moves the upper transport roller 12 to the retracted position (S13). The upper transport roller 12 moves from the nip position to the retreat position (see fig. 6). The CPU101 performs control to drive the lower cylinder 525, thereby rotating the lower grip roller 501 to the downward separating position (S15). The lower rod 526 is driven by the lower cylinder 525 to ascend from the lower retracted position to the lower biasing position (arrow E in fig. 16). The lower motor support member 504 rotates clockwise in the front view (arrow D1 in fig. 16) against the urging force of the lower elastic member 509, and the lower grip roller 501 moves from the lower contact position to the lower separation position (refer to fig. 16). The CPU101 performs control to drive the upper cylinder 625 and thereby move the upper pinch roller 601 to the upper separation position (S17). The upper rod 626 is lowered (arrow G in fig. 13) from the upper retracted position (see fig. 13) to the upper biasing position by the driving of the upper cylinder 625. The upper motor support member 604 rotates clockwise in the front view (arrow F1 in fig. 16), and the upper pinch roller 601 moves from the upper contact position to the upper separation position. The CPU101 controls the base cylinder 309 to be driven, thereby moving the movable body 304 from the left end position (see fig. 10) to the right end position (see fig. 16) (S19). The support member 315 moves to the right of the passing region of the nozzle 11, and moves to the upper right of the lower pinch roller 501 and to the lower right of the upper pinch roller 601 (see fig. 16).

The CPU101 determines whether a nozzle movement instruction is detected based on the detection result of the switch 19 (S21). The nozzle movement instruction is an instruction for moving the nozzle 11. Until the nozzle movement instruction is detected (S21: no), the CPU101 stands by. When the operator inputs a nozzle movement instruction to the switch 19 (yes in S21), the CPU101 controls the nozzle motor 113 to be driven, and moves the nozzle 11 from the first relative position to the spaced position (S23). The CPU101 inputs a predetermined pulse signal as a control signal to the nozzle motor 113. Since the movable body 304 is located at the right end position, the nozzle 11 does not contact the support member 315 when moving (see fig. 16). When the nozzle 11 reaches the spaced position, the CPU101 stops the driving of the nozzle motor 113. The CPU101 executes the top coating process (S25).

The top end coating process will be described with reference to fig. 17 to 23. The top coating process is a process of coating the adhesive Z on the lower top end portion 8B of the lower sheet 8. The CPU101 controls the left and right air cylinders 217 to be driven, and moves the nozzle opposing member 230 from the first support position (see fig. 5) to the second support position (see fig. 18) (S51).

The CPU101 determines whether a nozzle movement instruction is detected based on the detection result of the switch 19 (S53). S53 is the same processing as S21. While the CPU101 is standing by (S53: no), the operator places the lower sheet 8 on the support portion 52 and the nozzle opposed member 230 (see fig. 19). The right support portion 236 of the nozzle opposing member 230 supports the lower tip portion 8B from below. The lower tip portion 8B is curved along the upper surface of the right support portion 236 (see fig. 20).

The operator having mounted the lower sheet 8 inputs a nozzle movement instruction to the switch 19 (S53: yes). The CPU101 controls the nozzle motor 113 to move the nozzle 11 from the spaced position (see fig. 16) to the first relative position (see fig. 19) (S55). The protruding portion 11B of the nozzle 11 faces the lower tip portion 8B from above (see fig. 20). The CPU101 controls the base cylinder 309 to be driven, and thereby moves the movable body 304 from the right end position to the left end position (S57). The support member 315 moves to a position above the lower pinch roller 501 and below the upper pinch roller 601 (see fig. 19).

The CPU101 controls the upper head cylinder 725 to be driven, and thereby the upper support portion 730 is moved to the intermediate position (S59). The intermediate position is the position of the upper support 730 between the inoperative position and the operative position. When the rod 725A of the upper head cylinder 725 is raised from the extended position to the retracted position (arrow S in fig. 21), the second end 728B of the link 728 biases the start end 703C of the long hole 703A upward via the other end 721B of the link arm 721. The movable body 702 rotates while maintaining the state where the other end 721B is in contact with the start end 703C. Therefore, the upper support portion 730 moves from the rest position to the intermediate position (arrow N1 in fig. 21). When rod 725A reaches the upper end position, upper bearing 730 reaches the intermediate position. At this time, the coupling arm 721 is rotated by the rotation angle θ about the support shaft 701 (see fig. 20). When the upper support portion 730 reaches the intermediate position, the second end portion 728B of the link 728 holds the movable body 702 via the other end portion 721B of the connecting arm 721 and the start end portion 703C of the long hole 703A. Therefore, the bonding apparatus 1 holds the upper support portion 730 at the intermediate position.

The CPU101 determines whether or not the start instruction of the top coating is detected based on the detection result of the switch 19 (S61). Before the operator inputs a start instruction of the top end coating (S61: no), the CPU101 stands by. During standby of the CPU101 (S61: no), the operator configures the upper sheet 6. The upper distal end portion 6B is placed on, for example, the upper end portion 11C of the nozzle 11, and a portion of the upper sheet 6 located forward of the upper distal end portion 6B is placed on the support base 305 (see fig. 19 and 21). The operator who has arranged the upper sheet 6 manually moves the upper support portion 730 from the intermediate position (see fig. 21) to the operating position (see fig. 22) (arrow N2 in fig. 21). When the elongated hole 703A slides with respect to the other end 721B of the coupling arm 721, the movable body 702 rotates about the support shaft 701, and the upper support portion 730 moves from the intermediate position to the operating position (arrow N2 in fig. 21). The second shaft portion 705B of the pin 705 comes into contact with the coupling member 213 from the rear side (see fig. 7), and the upper support portion 730 stops at the operating position. The rotation angle of the movable body 702 associated with the movement of the upper support portion 730 from the intermediate position to the operating position is equal to or smaller than the rotation angle θ (see fig. 20) of the coupling arm 721. In the present embodiment, the rotation angle of movable body 702 is substantially the same as rotation angle θ. After the upper support 730 rotates, the other end 721B is located near the end 703D (see fig. 22).

The operator inserts the left portion of the upper distal end portion 6B between the extension plane 761A and the support plane 742 from between the support plane 742 and the second plate-like body 762 (see fig. 23). The operator positions the upper tip portion 6B in the front-rear direction by abutting the upper tip portion 6B against the projecting member 750 from the front. The support surface 742 supports the upper tip portion 6B from below at a position above the nozzle operating region 15. The operator inputs an instruction to start the top end coating to the switch 19 (S61: yes).

The CPU101 controls the nozzle motor 113 and the pump motor 114 to be driven, and thereby performs the top coating (S63). The nozzle motor 113 is driven to move the nozzle 11 from the first relative position to the second relative position. At the same time, the supply mechanism 45 supplies the adhesive Z to the discharge port 11D by driving the pump motor 114. Therefore, while the nozzle 11 is moving from the first relative position to the second relative position (arrow V in fig. 23), the nozzle 11 discharges the adhesive Z from the discharge port 11D toward the lower tip end portion 8B. Therefore, the bonding apparatus 1 applies the adhesive Z to the lower tip portion 8B (see fig. 23). Since the upper distal end portion 6B is supported by the support surface 742 located above the nozzle operating region 15, the nozzle 11 is less likely to contact the upper distal end portion 6B. When the nozzle 11 reaches the second relative position, the CPU101 stops the driving of the nozzle motor 113 and the pump motor 114. The CPU101 ends the top coating.

The CPU101 controls the left and right air cylinders 217 to be driven, and moves the nozzle opposing member 230 from the second support position (see fig. 18) to the first support position (see fig. 5) (S65). At this time, the left support portion 231 (see fig. 5) and the lower transport roller 270 support the lower distal end portion 8B from below. The CPU101 controls the nozzle motor 113 to be driven in a state where the lower conveyance motor 262, the upper conveyance motor 112, and the pump motor 114 are stopped, and moves the nozzle 11 from the second relative position (see fig. 23) to the first relative position (see fig. 24) (S67). The CPU101 ends the top coating process and shifts the process to S27.

As shown in fig. 15, 19, 22, and 24, the CPU101 determines whether or not the retraction instruction of the upper support portion 730 is detected based on the detection result of the switch 19 (S27). The retraction instruction of the upper support portion 730 is an instruction for moving the upper support portion 730 from the operating position to the non-operating position. Until the operator inputs the retraction instruction of the upper support portion 730 to the switch 19 (S27: no), the CPU101 stands by. When the operator inputs the retraction instruction of the upper support 730 to the switch 19 (yes in S27), the CPU101 controls the upper head cylinder 725 to be driven, and the upper support 730 is moved from the operating position to the non-operating position (S29). The rod 725A descends (arrow T in fig. 24) from the retracted position (see fig. 22) to the extended position (see fig. 24) in accordance with the driving of the upper head cylinder 725. At this time, the rod 725A biases the movable body 702 downward via the link 728, the connecting arm 721, and the terminal end portion 703D of the long hole 703A. Therefore, the second shaft portion 705B (see fig. 7) of the pin 705 is disengaged rearward from the coupling member 213, and the movable body 702 rotates clockwise when viewed from the right side about the support shaft 701 (arrow N3 in fig. 23 and 24). The upper support portion 730 moves to the non-operating position via the intermediate position by the weight of the upper support portion 730, the movable body 702, and the like. The upper support portion 730 is separated rearward from the upper tip portion 6B. The long hole 703A slides with respect to the other end 721B of the link arm 721. When the rod 725A reaches the extended position, the movable body 702 reaches the non-operating position, and the other end 721B of the link arm 721 comes into contact with the leading end 703C of the long hole 703A. The upper distal end portion 6B is overlapped with the lower distal end portion 8B with an adhesive Z interposed therebetween (see fig. 24).

The CPU101 controls the arm cylinder 122 to be driven, and moves the upper transport roller 12 to the nip position (S31). The upper conveying roller 12 sandwiches the lower distal end portion 8B and the upper distal end portion 6B from above between the upper conveying roller and the lower conveying roller 270 (see fig. 28).

The CPU101 performs control to drive the lower cylinder 525, thereby moving the lower pinch roller 501 to the lower contact position (S33). The lower rod 526 is lowered from the lower biasing position to the lower retracted position by the drive of the lower cylinder 525 (see fig. 19). The lower grip roller 501 moves from the lower separation position to the lower contact position by the urging force of the lower elastic member 509 (arrow D2 in fig. 19). The lower pinch roller 501 pinches the lower sheet 8 between it and the front portion of the lower surface 315B of the support member 315 (see fig. 19). The CPU101 performs control to drive the upper cylinder 625, thereby moving the upper pinch roller 601 to the upper contact position (S35). The upper rod 626 is driven by the upper cylinder 625 to move upward from the upper biasing position to the upper retracted position (see fig. 13). The upper motor support member 604 is rotated counterclockwise in the front view (arrow F2 in fig. 19) by the weight of the upper arm 607, the upper drive coupling portion 610, and the like. The upper pinch roller 601 moves from the upper separation position to the upper contact position, and the upper pinch roller 601 pinches the upper sheet 6 between it and the upper surface 315A (refer to fig. 19). The CPU101 executes the bonding process (S37). When the operator operates the pedal 7 with his foot, the CPU101 detects an instruction to start the bonding process and starts the bonding process (S37).

The bonding process will be described with reference to fig. 25 to 28. The CPU101 performs control to drive the upper conveyance motor 112 and the lower conveyance motor 262, thereby starting driving of the upper conveyance roller 12 and the lower conveyance roller 270 (S81). The upper and lower conveying rollers 12 and 270 convey the lower and upper sheets 8 and 6 sandwiched in the up-down direction to the rear side (arrow Y direction in fig. 28). The CPU101 controls the pump motor 114 to be driven, and starts the discharge of the adhesive Z (S83). The supply mechanism 45 supplies the adhesive Z to the nozzle 11 by driving the pump motor 114. The adhesive Z is discharged to the lower specific end portion 8A through the discharge port 11D (see fig. 4).

The CPU101 determines whether or not the lower specific end portion 8A is located at the lower detection position P based on the detection result of the lower detection section 535 (S85). When the lower detection section 535 detects that the lower detection position P is located at the lower specific end portion 8A (refer to fig. 26), the CPU101 determines that the lower specific end portion 8A is located at the lower detection position P (S85: yes). The CPU101 controls the lower motor 505 to drive and drive the lower grip roller 501 to rotate the lower grip roller 501 in the first output direction (S87). The first feeding direction is a rotation direction in which the upper end of the lower pinch roller 501 moves to the left, and corresponds to an arrow H1 in fig. 26. The lower grip roller 501 rotating in the first feeding direction moves the lower specific end portion 8A to the left side (arrow a1 in fig. 26). The CPU101 shifts the process to S91.

When the lower detection section 535 detects that the lower specific end portion 8A is not at the lower detection position P (refer to fig. 27), the CPU101 determines that the lower specific end portion 8A is not at the lower detection position P (S85: no). The CPU101 controls the lower motor 505 to drive and drive the lower grip roller 501 to rotate the lower grip roller 501 in the second output direction (S89). The second output direction is a direction opposite to the first output direction, and corresponds to an arrow H2 in fig. 27. The lower grip roller 501 rotating in the second feeding direction moves the lower specific end portion 8A to the right (arrow a2 in fig. 27). The CPU101 shifts the process to S91.

The CPU101 determines whether the upper specific end portion 6A is located at the upper detection position Q based on the detection result of the upper detection portion 635 (S91). When the upper detection unit 635 detects that the upper specific end portion 6A is located at the upper detection position Q (see fig. 26), the CPU101 determines that the upper specific end portion 6A is located at the upper detection position Q (S91: yes). The CPU101 controls the upper motor 605 to be driven, thereby driving the upper pinch roller 601 to rotate the upper pinch roller 601 in the third output direction (S93). The third feeding direction is a rotation direction in which the lower end of the upper pinch roller 601 moves to the right, and corresponds to an arrow H3 in fig. 26. The upper nip roller 601 rotating in the third feeding direction moves the upper specific end portion 6A to the right side (arrow B1 in fig. 26). The CPU101 shifts the process to S97.

When the upper detection unit 635 detects that the upper specific end portion 6A is not at the upper detection position Q (see fig. 27), the CPU101 determines that the upper specific end portion 6A is not at the upper detection position Q (S91: no). The CPU101 controls the upper motor 605 to be driven, thereby driving the upper pinch roller 601 to rotate the upper pinch roller 601 in the fourth output direction (S95). The fourth output direction is a direction opposite to the third output direction, and corresponds to an arrow H4 in fig. 27. The upper nip roller 601 rotating in the fourth feeding direction moves the upper specific end portion 6A to the left (arrow B2 in fig. 27). The CPU101 shifts the process to S97.

The CPU101 determines whether or not an instruction to end the bonding process is detected based on the detection result of the pedal 7 (S97). Until the end instruction of the bonding process is detected (S97: no), the CPU101 repeatedly executes S85 to S97. At this time, the pump motor 114, the upper conveyance motor 112, the lower conveyance motor 262, the lower motor 505, the upper motor 605, the heater 131, and the heater 132 continue to be driven.

During the CPU101 repeatedly executes S85 to S97, the lower sheet 8 after the adhesive Z is attached enters between the lower conveying roller 270 and the upper conveying roller 12. The upper transport roller 12 and the lower transport roller 270 press-contact the lower specific end portion 8A and the upper specific end portion 6A with the adhesive Z, and transport them to the rear side. Therefore, the bonding apparatus 1 bonds the lower specific end portion 8A and the upper specific end portion 6A with the adhesive Z. The lower sheet 8 and the upper sheet 6 bonded to each other by the adhesive Z are moved to the rear side along the sheet supporting portion 280 by the rotation of the upper conveying rollers 12 and the lower conveying rollers 270 (arrow Y in fig. 28). The upper support portion 730 located at the rest position is located forward and downward with respect to the rear end portion of the lower plate portion 280B of the sheet support portion 280. Therefore, the lower sheet 8 and the upper sheet 6 moving along the sheet supporting portion 280 do not easily contact the upper supporting portion 730.

The CPU101 repeatedly executes S85 to S97, whereby the bonding apparatus 1 adjusts the left-right position of the lower specific end portion 8A and the upper specific end portion 6A passing through the nozzle 11. Therefore, the length in the left-right direction of the portion of the upper specific end portion 6A that overlaps the lower specific end portion 8A in the up-down direction (hereinafter referred to as the overlapping amount of the upper specific end portion 6A) is within a predetermined range. The amount of overlap of the upper specific end portion 6A corresponds to the dimension M1 in fig. 26 and to the dimension M2 in fig. 27.

When the operator operates the pedal 7 with his foot to input an instruction to end the bonding process (yes in S97), the CPU101 stops the driving of each of the upper feed motor 112, the lower feed motor 262, the pump motor 114, the lower motor 505, and the upper motor 605 (S99). The CPU101 ends the bonding process and ends the main process.

A method of adjusting the front-rear position of the protruding member 750 when the upper support portion 730 is located at the operating position will be described with reference to fig. 9. For example, when the upper support portion 730 is located at the working position, the operator performs the adjustment work. The operator unscrews the fastening member 756 to such an extent that the fastening member 756 does not fall off the threaded hole 744, and the protruding member 750 and the extending member 760 can be integrally moved in the long-diameter direction of the through hole 752 (arrow R1). The operator fastens the fastening member 756 again after making the position adjustment of the protruding member 750 and the extending member 760. The front-rear position of the protruding member 750 when the upper support portion 730 is located at the operating position is changed. Since the operator can adjust the front-rear position of the projecting member 750 when the upper support portion 730 is in the operating position, the operator can adjust the front-rear position where the upper tip portion 6B (see fig. 23) abuts against the projecting member 750. The operator can align the rear end of the upper tip portion 6B with the rear end of the lower tip portion 8B when the upper tip portion 6B is overlapped with the lower tip portion 8B after the tip coating process.

Referring to fig. 7, a method of adjusting the operating position of the upper support 730 in the front-rear direction will be described. The operator holds the upper support 730 in the working position. The operator rotates the second shaft 705B about the first shaft 705A of the pin 705 (arrow J). Since the second shaft portion 705B is eccentric with respect to the first shaft portion 705A, the position of the second shaft portion 705B with respect to the first shaft portion 705A changes. Therefore, the bonding apparatus 1 can adjust the operating position of the upper support portion 730 in the front-rear direction.

A method of adjusting the upper detection position Q in the left-right direction and adjusting the left end position of the movable body 304 in the left-right direction will be described with reference to fig. 4, 11, and 13. When the operator mounts the nozzle 13 to the nozzle mounting portion 10 instead of the nozzle 11, the upper detection position Q and the left end position of the movable body 304 are adjusted in the left-right direction. In the present embodiment, for example, the discharge width (dimension L2) of the nozzle 13 is smaller than the discharge width (dimension L1) of the nozzle 11, and the discharge left end position X2 of the nozzle 13 is located on the right side of the discharge left end position X1 of the nozzle 11. Therefore, the operator needs to make the overlap amount of the upper specific end portion 6A (dimension M1 in fig. 26 and dimension M2 in fig. 27) smaller than the overlap amount when the nozzle 11 is attached, and needs to adjust the left-right position of the upper reflecting portion when the moving body 304 is at the left end position.

As shown in fig. 13, the operator unscrews the fastening member 637 to such an extent that the fastening member 637 does not fall off the fastening hole 639. The operator moves the upper detection part 635 in the same direction as the holding member 633 to the right (arrow C). The operator fastens the two fastening members 637 to the two fastening holes 639 again, respectively.

As shown in fig. 11, the operator unscrews the screw member 334 to such an extent that the screw member 334 does not fall off the screw hole 333. The operator moves the positioning member 310 to the right by the amount of the change of the upper detection position Q to the right, and fastens the two screw members 334 to the two screw holes 333 again, respectively. Since the fixing position of the positioning member 310 to the base 33 changes to the right, the contact position of the positioning member 310 with the movable body 304 changes to the right. Therefore, the left end position of the moving body 304 changes to the right, and the left and right positions of the upper reflection unit when the moving body 304 is located at the left end position change to the right. By the above operation, the operator can change the upper detection position Q and the left end position of the movable body 304 to the right side. Therefore, the bonding apparatus 1 can reduce the amount of overlap of the upper specific end portion 6A when performing the bonding process (see fig. 25).

Referring to fig. 9, a method of adjusting the fixing position of the upper support portion 730 with respect to the fixing portion 704 in the left-right direction will be described. When the operator mounts the nozzle 13 to the nozzle mounting portion 10 instead of the nozzle 11, the operator adjusts the left-right position of the upper support portion 730. In the present embodiment, for example, the operator adjusts the fixing position of the upper support portion 730 with respect to the fixing portion 704 to the right.

The operator can move the support member 740, the projecting member 750, and the extension member 760 in the longitudinal direction of the through-hole 743, that is, in the left-right direction by loosening the fastening member 745 to such an extent that the fastening member 74 does not fall off the screw hole 704A. The operator moves the support member 740, the protruding member 750, and the extension member 760 to the right (arrow R2), and then fastens the fastening member 745 again. Therefore, the operator can adjust the fixed position of the upper support portion 730 with respect to the fixing portion 704 to the right.

As described above, when the CPU101 executes the top end coating process (S25), the upper top end portion 6B of the upper sheet 6 is supported by the support surface 742 of the upper support portion 730 located at the operating position. At this time, the upper tip portion 6B is located above the nozzle operating region 15, and therefore the nozzle 11 moving between the first relative position and the second relative position is not easily touched. Therefore, the CPU101 can execute the top end coating process with the top end portion 6B placed on the upper support portion 730. After the tip end coating process is completed, the nozzle 11 is moved from the second relative position to the first relative position (S67), and then the CPU101 moves the upper support 730 to the inoperative position (S29). The upper distal end portion 6B is quickly overlapped with the lower distal end portion 8B after the adhesive Z is adhered. Therefore, the bonding apparatus 1 can improve the work efficiency of overlapping the upper distal end portion 6B of the upper sheet 6 with the lower distal end portion 8B after the adhesive Z is applied.

When the upper tip portion 6B is placed on the upper support portion 730, the operator can position the upper tip portion 6B against the protruding member 750. Therefore, the bonding apparatus 1 can prevent the positional relationship between the lower sheet 8 and the upper sheet 6 stacked on each other from being deviated.

The operator unscrews the fastening member 756, so that the protruding member 750 can move in the long diameter direction of the through-hole 752. The operator can adjust the fixing position of the protruding member 750 with respect to the supporting member 740 in the forward and backward direction when the upper supporting part 730 is located at the working position. Therefore, the operator can adjust the front-rear position of the upper distal end portion 6B of the lower sheet 8, and the bonding apparatus 1 can further prevent the positional relationship between the lower sheet 8 and the upper sheet 6 that are overlapped with each other from being deviated.

Sometimes the upper tip portion 6B curves upward or downward as going toward the rear side. In the present embodiment, the projecting member 750 projects from the support surface 742, and the extension setting surface 761A of the extension member 760 extends parallel to the support surface 742 with a gap therebetween and faces the support surface 742. Therefore, the bonding apparatus 1 can easily correct the posture of the bent upper tip portion 6B to the posture along the support surface 742 and the extension surface 761A by the upper tip portion 6B entering between the extension surface 761A and the support surface 742. Therefore, when the upper support portion 730 moves from the operating position to the non-operating position (S29), the upper distal end portion 6B overlaps the lower distal end portion 8B to which the adhesive Z has been applied in a corrected posture. Therefore, wrinkles are less likely to occur when the lower sheet 8 and the upper sheet 6 are attached to each other via the adhesive Z.

The extension setting surface 761A faces the support surface 742 with a gap therebetween, and extends parallel to the support surface 742. The distance between the extended mounting surface 761A and the support surface 742 is constant in the extending direction of the extended mounting surface 761A. The upper distal end portion 6B positioned between the extension setting surface 761A and the support surface 742 is easily positioned along the extension setting surface 761A and the support surface 742. Therefore, the bonding apparatus 1 can more easily correct the posture of the upper distal end portion 6B located between the extension setting surface 761A and the support surface 742. The second plate 762 is provided at the front end of the first plate 761 and extends upward and forward from the front end of the first plate 761. The operator can easily insert the left portion of the upper distal end portion 6B between the extension plane 761A and the support plane 742 from between the support plane 742 and the second plate-like body 762. Therefore, the operator can easily dispose the upper sheet 6 on the upper support portion 730 located at the working position.

The upper support portion 730 is provided to the fixing portion 704 of the movable body 702 and moves between the operating position and the non-operating position in accordance with the rotation of the movable body 702. That is, movable body 702 supports upper support portion 730 such that upper support portion 730 is movable between an operating position and a non-operating position. When the upper support portion 730 is in the inoperative position, the second shaft portion 705B is disengaged from the coupling member 213. The second shaft portion 705B of the pin 705 is coupled to the coupling member 213, and the upper support portion 730 stops at the operating position. Since the upper support portion 730 can be stably held at the working position, the operator can easily dispose the upper sheet 6 on the upper support portion 730 located at the working position. The pin 705 and the coupling member 213 are magnets that can be coupled by magnetic force. The bonding apparatus 1 can more easily hold the upper support portion 730 in the working position by the pin 705 and the coupling member 213. Therefore, the bonding apparatus 1 can simplify the structures of the movable body 702 and the base 212.

The changing unit 710 changes the position of the upper support 730 when the upper support 730 is located at the operating position in the front-rear direction. Therefore, the operator can adjust the upper support portion 730 located at the working position to a desired front-rear position.

At least a part of the support shaft 701 is located directly below the nozzle working region 15 in the front-rear direction. The front portion of the upper support portion 730 located at the operating position is vertically aligned with the support shaft 701 when viewed from the side. In this case, the vertical position of the upper support portion 730 is not easily changed. Therefore, the upper sheet 6 disposed on the upper support portion 730 is stable in the vertical position, and therefore the bonding apparatus 1 can further prevent the positional relationship between the upper sheet 6 and the lower sheet 8 that are overlapped with each other from being deviated.

After the nozzle 11 moves from the second relative position to the first relative position (S67), the movable body 702 rotates rearward about the support shaft 701, and the pin 705 disengages from the coupling member 213. At this time, the pin 705 moves downward, so that the upper support portion 730 is easily moved from the operating position to the non-operating position immediately. Therefore, the time from the movement of the nozzle 11 from the second relative position to the first relative position (S67) until the upper tip portion 6B overlaps the lower tip portion 8B is shortened. Therefore, the bonding apparatus 1 can overlap the upper distal end portion 6B with the lower distal end portion 8B before the adhesive Z adhering to the lower distal end portion 8B becomes solid in the distal end coating process.

The driving force of the upper head cylinder 725 is transmitted to the movable body 702 via the link 728 and the connecting arm 721, and the upper support portion 730 can move from the non-operating position to the intermediate position. Since the upper support portion 730 moves to the intermediate position by the driving force of the upper head cylinder 725, the amount of work performed by the operator when moving the upper support portion 730 to the operating position is reduced. Therefore, the bonding apparatus 1 can improve the work efficiency of disposing the upper sheet 6 on the upper support portion 730.

The upper bearing 730 is driven by the upper head cylinder 725 to reach the intermediate position from the rest position (S59). After the upper head cylinder 725 is driven, the operator can manually move the upper support portion 730 from the intermediate position to the operating position at a desired timing. Therefore, the bonding apparatus 1 can improve the efficiency of disposing the upper sheet 6 on the upper support portion 730 and improve the convenience.

The sheet supporting portion 280 is for supporting the lower sheet 8 and the upper sheet 6 bonded to each other by the adhesive Z. The upper support portion 730 located at the inoperative position is located forward and downward of the rear end portion of the lower plate portion 280B of the sheet support portion 280. The upper sheet 6 and the lower sheet 8 moving along the sheet supporting portion 280 are less likely to contact the upper supporting portion 730 located at the rest position. Therefore, the bonding apparatus 1 can stably convey the upper sheet 6 and the lower sheet 8.

By attaching either one of the nozzle 11 and the nozzle 13 to the nozzle attachment portion 10, the discharge width of the adhesive Z of the bonding apparatus 1 is changed. The bonding apparatus 1 includes the screw hole 704A, the through-hole 743, and the fastening member 745, and can change the left and right positions of the upper support portion 730 according to the discharge width of the adhesive Z. Therefore, the bonding apparatus 1 can diversify the bonding method of the lower sheet 8 and the upper sheet 6, and can make the positional relationship between the lower sheet 8 and the upper sheet 6 superposed on each other less likely to vary.

In performing the bonding process, the conveying mechanism 80 conveys the upper sheet 6 and the lower sheet 8 after the adhesive Z is attached. By driving the lower pinch roller 501 to rotate the lower pinch roller 501 in the first feeding direction or the second feeding direction, the lower specific end portion 8A passes near the lower detection position P. The upper nip roller 601 is driven to rotate the upper nip roller 601 in the third feeding direction or the fourth feeding direction, whereby the upper specific end portion 6A passes through the vicinity of the upper detection position Q. When the nozzle 11 discharges the adhesive Z from the discharge port 11D, the positional relationship between the lower specific end portion 8A and the upper specific end portion 6A with respect to the nozzle 11 in the specific direction is not likely to be deviated. Therefore, the bonding apparatus 1 can stably convey the lower sheet 8 and the upper sheet 6 after overlapping the rear end portion of the upper sheet 6 and the rear end portion of the lower sheet 8 to which the adhesive has been applied.

In the above description, the nozzle opposing member 230 is an example of the lower support portion of the present invention. The through hole 752 is an example of the first through hole of the present invention. The threaded hole 744 is an example of a first threaded hole of the present invention. The fastening member 756 is an example of the first fastening member of the present invention. The pin 705 is an example of a movable member of the present invention. The through-hole 743 is an example of the second through-hole of the present invention. The threaded hole 704A is an example of a second threaded hole of the present invention. The fastening member 745 is an example of the second fastening member of the present invention. The upper head cylinder 725 is an example of the driving portion of the present invention. The first plate-like body 761 is an example of the first member of the present invention. The second plate-like member 762 is an example of the second member of the present invention. The rear side is an example of the downstream side of the present invention and one side in the conveying direction. The left-right direction is an example of the specific direction, the orthogonal direction, and the predetermined direction of the present invention. The front side is an example of the upstream side of the present invention. The right side is an example of one side in the predetermined direction of the present invention. The left side is an example of the other side in the predetermined direction of the present invention. The CPU101 when executing S63 is an example of the discharge control unit of the present invention. The CPU101 when executing S67 is an example of the movement control unit of the present invention. The CPU101 when executing S37 is an example of the discharge conveyance control unit of the present invention. The CPU101 executing S87 and S89 is an example of the lower motor control unit of the present invention. The CPU101 executing S93 and S95 is an example of the upper motor control unit of the present invention.

The present invention is not limited to the above-described embodiments. Discharge ports 11D and 13D may be rectangular in shape that is long in the left-right direction. The nozzle 11 may be movable in the left-right direction. In this case, the bonding apparatus 1 may have a rail for supporting the nozzle 11 so that the nozzle 11 can move left and right, instead of the support shaft 26.

The end position on the clockwise side when viewed from the left side with the support shaft 26 as the center in the movable range of the nozzle 11 may not be the second relative position. For example, the nozzle 11 may be movable to a retracted position closer to the support shaft 26 than the second relative position and closer to the clockwise direction when viewed from the left side. At this time, after the top end coating is performed (S63), the CPU101 may control the nozzle motor 113 to be driven while the pump motor 114 is stopped, so that the nozzle 11 is moved from the second relative position to the retracted position. After the nozzle opposing member 230 moves from the second support position to the first support position (S65), the CPU101 may move the nozzle 11 from the retracted position to the first relative position (S67).

The support shaft 701 that supports the movable body 702 so that the movable body 702 can rotate may extend in the front-rear direction. At this time, the upper support portion 730 located at the non-operating position is separated from the nozzle operating region 15, for example, to the lower left of the operating position. In the present modification, the front-rear direction is an example of the specific direction of the present invention. Instead of being rotatable about the support shaft 701, the movable body 702 may be movable in the left-right direction. In this case, the non-operating position may be a position away from the operating position to the right or left. The support shaft 701 may extend from the front left to the rear right, or may extend from the front right to the rear left.

The bonding apparatus 1 may not have the upper end cylinder 725, and the upper support portion 730 may be moved between the non-operating position and the operating position by, for example, manual operation by an operator. After the nozzle 11 is moved from the second relative position to the first relative position (S67), the operator may manually move the upper support portion 730 from the operating position to the non-operating position. At this time, even after the nozzle 11 is moved from the first relative position to the second relative position, the upper distal end portion 6B can be quickly overlapped with the lower distal end portion 8B after the adhesive Z is adhered. Therefore, the bonding apparatus 1 can improve the work efficiency of overlapping the upper distal end portion 6B with the lower distal end portion 8B.

The bonding apparatus 1 may also have an electromagnetic element instead of the upper tip cylinder 725. The electromagnetic element has a rod 725A. At this time, the upper support portion 730 can be rotated between the non-operating position and the operating position by the driving of the electromagnetic element. In the present modification, the electromagnetic element is an example of the driving unit of the present invention.

The front and rear positions of the protruding member 750 may not be adjusted. The upper support 730 may not have the protrusion member 750.

The coupling member 213 may be a member having an engagement hole opened rearward. In this case, the bonding apparatus 1 may have an L-letter-shaped member and an engaging portion instead of the pin 705. The letter L-shaped member has a first plate portion and a second plate portion. The first plate portion has a thickness in the left-right direction and is fixed to face the left surface of the arm portion 703. The second plate portion extends leftward from an end portion of the first plate portion on the clockwise side when viewed from the left side, with the support shaft 701 as the center. When the upper support portion 730 is located at the operating position, the second plate portion faces the engagement hole. The engaging portion protrudes from the second plate portion in the clockwise direction when viewed from the left side with the support shaft 701 as the center. When the upper support portion 730 is in the operating position, the engaging portion is detachably engaged with the engaging hole. The engagement portion is detachably connected to the engagement hole, so that the upper support portion 730 can be stably held at the operating position. When the bonding apparatus 1 includes the L-letter-shaped member and the engaging portion instead of the pin 705, the changing portion 710 may not include the coupling hole 703B and the first shaft portion 705A. In this case, the modification part 710 may have a fastening hole, a long hole, and a screw. The fastening hole is provided in the arm portion 703 and is open leftward. The elongated hole is an arc-shaped first plate portion centered on the support shaft 701 and penetrating the L-letter-shaped member in the thickness direction. A portion of the elongated hole is opposed to the fastening hole. The screw penetrates the long hole and is fastened to the fastening hole. The operator can adjust the L-letter-shaped member in the longitudinal direction of the elongated hole by loosening the screw to such an extent that the screw does not fall off the screw hole. Therefore, the changing portion 710 can change the engagement position of the engagement portion and the engagement hole in the front-rear direction, and the bonding apparatus 1 can adjust the operating position of the upper support portion 730 in the front-rear direction.

When the upper support portion 730 is in the operating position, the front portion of the upper support portion 730 may be vertically aligned with the support shaft 701 when viewed from the side. At this time, since at least a part of the support shaft 701 is positioned directly below the nozzle operating region 15 in the front-rear direction, the vertical position of the upper support portion 730 positioned at the operating position is not easily changed.

The second shaft portion 705B of the pin 705 may not be in direct contact with the coupling member 213. The bonding apparatus 1 may have a plate-like member made of a non-magnetic body on the rear surface of the coupling member 213. When the upper support portion 730 rotates from the intermediate position to the operating position, the second shaft portion 705B indirectly contacts the coupling member 213 via the plate-like member. Therefore, the bonding apparatus 1 holds the upper support portion 730 at the operating position by the coupling between the pin 705 and the coupling member 213 by the magnetic force.

The nozzle mounting portion 10 may fix only one of the nozzle 11 and the nozzle 13. In this case, the bonding apparatus 1 may not include the screw hole 704A, the through-hole 743, and the fastening member 745.

Claims (17)

1. A bonding apparatus (1) comprises:

a lower support part (230) for supporting the lower sheet (8);

nozzles (11, 13) having upper end portions (11C) for supporting an upper sheet (6) superimposed on the lower sheet from above from below and discharge ports (11D, 13D) through which the adhesive can be discharged to the lower sheet supported by the lower support portion;

a supply mechanism (45) for supplying the adhesive to the nozzle; and

a conveying mechanism (80) that conveys the upper sheet and the lower sheet to which the adhesive is attached while sandwiching the upper sheet and the lower sheet in the vertical direction at a position on a downstream side of the nozzle in a conveying direction of the lower sheet and the upper sheet, the conveying mechanism being characterized in that,

the bonding device comprises a nozzle motor (113) connected with the nozzle,

the nozzle is movable by a driving force of the nozzle motor between a first relative position where the nozzle is located when the discharge port is opposed to the lower sheet and a second relative position where the nozzle is located when the discharge port is opposed to a position where the lower sheet and the upper sheet are sandwiched from below in the conveying mechanism, the first relative position being a position where the discharge port is located on a downstream side in the conveying direction from the first relative position,

the bonding device comprises:

an upper support portion (730) that is movable between an operating position for supporting the upper sheet in the operating position and a non-operating position that is located above a nozzle operating region that is a region through which the upper end portion of the nozzle moves between the first relative position and the second relative position passes, the non-operating position being located farther from the nozzle than the operating position;

a discharge control unit (101) that controls the supply mechanism and the nozzle motor to be driven in a state in which the conveyance mechanism is stopped when the upper support unit is at the operating position, so that the nozzle is moved from the first relative position to the second relative position, and the adhesive is discharged from the discharge port;

a movement control unit that controls the nozzle motor to be driven to move the nozzle from the second relative position to the first relative position in a state where the conveyance mechanism and the supply mechanism are stopped after the discharge control unit moves the nozzle to the second relative position; and

and a discharge conveyance control unit that controls the conveyance mechanism and the supply mechanism to be driven after the movement control unit moves the nozzle to the first relative position and after the upper support unit moves from the operating position to the non-operating position, and that discharges the adhesive from the discharge port, sandwiches the lower sheet and the upper sheet, and conveys the lower sheet and the upper sheet.

2. Bonding device according to claim 1,

the upper support part has:

a support member (740) having a support surface (742) for supporting the upper sheet; and

and a protruding member (750) that protrudes from the support surface in a direction intersecting the support surface and is capable of contacting an end portion on the downstream side in the conveying direction of the upper sheet.

3. Bonding device according to claim 2,

the upper support portion has an adjustment portion that is capable of adjusting, with respect to the support member in the conveying direction, a protruding position at which the protruding member protrudes from the support surface when the upper support portion is located at the operating position.

4. Bonding device according to claim 3,

the adjustment portion has:

a first through hole (752) provided in the protruding member, the first through hole being longer in the conveyance direction when the upper support portion is in the operating position;

a first threaded hole (744) provided in the support member and facing the first through hole; and

a first fastening member (756) that penetrates the first through hole and is fastened to the first threaded hole.

5. The bonding apparatus according to any one of claims 2 to 4,

the upper support part has an extension member (760) extending from the protruding member in the conveying direction and facing the support surface with a gap.

6. Bonding device according to claim 5,

the extension member has:

a first member (761) having an extended installation surface (761A) that faces the support surface with the gap therebetween and extends parallel to the support surface; and

and a second member (762) which is provided at an end portion of the first member on the upstream side in the conveying direction and extends from the first member to the upstream side in the conveying direction and to the opposite side of the support surface.

7. Bonding device according to claim 1,

the bonding device comprises:

a base (212); and

a movable body (702) movably connected to the base station and supporting the upper support section so that the upper support section is movable between the operating position and the non-operating position,

the movable body has a movable member (705) capable of contacting with and separating from the base,

the base has a connecting member (213) detachably connected to the movable member,

the movable member is coupled to the coupling member when the upper support portion is located at the operating position,

when the upper support portion is located at the inoperative position, the movable member is disengaged from the coupling member.

8. Bonding device according to claim 7,

the movable member and the coupling member are magnets that can be combined by magnetic force.

9. Bonding device according to claim 7,

the bonding device has a changing unit (710) capable of changing the position of the upper support unit when the upper support unit is in the operating position in the conveying direction.

10. Bonding device according to claim 8,

the bonding device has a changing unit (710) capable of changing the position of the upper support unit when the upper support unit is in the operating position in the conveying direction.

11. The bonding apparatus according to any one of claims 7 to 10,

the bonding device comprises a support shaft (701) supported by the base at a position lower than the lower support part, extending along a specific direction intersecting with the vertical direction and supporting the movable body in a rotatable manner,

at least a portion of the support shaft is located directly below the nozzle working area in the conveying direction,

at least a part of the upper support portion located at the operating position and the support shaft are arranged in the up-down direction.

12. Bonding device according to claim 11,

the coupling member is located above the support shaft,

the support shaft extends in a direction orthogonal to the up-down direction and the conveying direction,

the movable member contacts the coupling member from a downstream side in the conveying direction.

13. Bonding device according to claim 12,

the bonding device comprises:

a long hole (703A) that is provided in the movable body and has a long diameter in the circumferential direction around the support shaft;

a connecting arm (721) having one end (721A) rotatably connected to the support shaft and the other end (721B) slidably connected to the long hole;

a drive section (725) having a rod (725A) capable of moving up and down, the drive section being supported by the base; and

and a link (728) that has a first end (728A) rotatably connected to the link and a second end (728B) that is located on one side in the conveyance direction with respect to the first end and rotatably connected to the other end of the connecting arm.

14. Bonding device according to claim 13,

the upper supporting part moves from the non-working position to an intermediate position between the non-working position and the working position under the driving of the driving part,

the rotation angle of the coupling arm by the driving of the driving portion is a rotation angle of the movable body accompanying the movement of the upper support portion from the non-operating position to the intermediate position, and is equal to or greater than a rotation angle of the movable body accompanying the movement of the upper support portion from the intermediate position to the operating position.

15. Bonding device according to claim 14,

the bonding device comprises a sheet supporting part (280) which is arranged at the downstream side of the conveying mechanism in the conveying direction and is used for supporting the lower sheet and the upper sheet which are bonded with each other by the adhesive,

the upper support portion located at the inoperative position is located below a downstream end of the sheet support portion in the conveying direction.

16. The bonding apparatus according to any one of claims 7 to 10,

the bonding device comprises:

a nozzle mounting portion (10) for selectively mounting a plurality of nozzles having different discharge widths, which are forming ranges of the discharge ports in a direction orthogonal to the vertical direction and the conveying direction;

a second through hole (743) provided in the upper support section and extending in the orthogonal direction;

a second screw hole (704A) provided in the movable body and facing the second through-hole; and

and a second fastening member (745) that penetrates the second through hole and is fastened to the second threaded hole.

17. Bonding device according to claim 1,

the bonding device comprises:

a lower pinch roller (501) that protrudes upward from the lower support portion at a position upstream of the nozzle in the conveyance direction and is rotatable in the conveyance direction as an axial direction, the lower pinch roller being in contact with the lower sheet;

a support member (315) that sandwiches the lower sheet between the support member and the lower pinch roller and supports the upper sheet from a lower side;

an upper nip roller (601) that is rotatable in the axial direction of the conveyance direction and that nips the upper sheet between the upper nip roller and the support member from above;

a lower motor (505) for driving the lower nip roller;

an upper motor (605) for driving the upper nip roller;

a lower detection unit (535) for detecting whether or not a lower specific end portion, which is an end portion of the lower sheet on one side in a predetermined direction orthogonal to the conveyance direction and the vertical direction, is located at a lower detection position, which is a predetermined position in the conveyance direction between the discharge port and the lower pinch roller;

an upper detection unit (635) for detecting whether or not an upper specific end portion, which is an end portion of the upper sheet on the other side in the predetermined direction, is located at an upper detection position, which is a predetermined position in the conveyance direction between the discharge port and the upper pinch roller; and

a motor control unit that controls the lower motor and the upper motor when the discharge conveyance control unit controls the conveyance mechanism and the supply mechanism,

the motor control unit includes:

a lower motor control unit that drives the lower pinch roller to rotate the lower pinch roller in a first feeding direction to move the lower sheet to the other side when the lower detection unit detects that the lower specific end is located at the lower detection position, and drives the lower pinch roller to rotate the lower pinch roller in a second feeding direction opposite to the first feeding direction to move the lower sheet to the one side when the lower detection unit detects that the lower specific end is not located at the lower detection position; and

and an upper motor control unit configured to drive the upper pinch roller to rotate the upper pinch roller in a third feeding direction to move the upper sheet to the one side when the upper detection unit detects that the upper specific end portion is located at the upper detection position, and to drive the upper pinch roller to rotate the upper pinch roller in a fourth feeding direction opposite to the third feeding direction to move the upper sheet to the other side when the upper detection unit detects that the upper specific end portion is not located at the upper detection position.

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