CN113170937B - Bonding device - Google Patents

Bonding device Download PDF

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Publication number
CN113170937B
CN113170937B CN202110017218.8A CN202110017218A CN113170937B CN 113170937 B CN113170937 B CN 113170937B CN 202110017218 A CN202110017218 A CN 202110017218A CN 113170937 B CN113170937 B CN 113170937B
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China
Prior art keywords
sheet
conveying
roller
restricting
nozzle
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CN202110017218.8A
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Chinese (zh)
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CN113170937A (en
Inventor
仓桥俊幸
柴田到
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Brother Industries Ltd
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Brother Industries Ltd
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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • A41H43/04—Joining garment parts or blanks by gluing or welding ; Gluing presses

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Coating Apparatus (AREA)

Abstract

The present invention relates to an adhesive device capable of accurately detecting an end portion of a sheet. The bonding device comprises: a lower conveying roller; a nozzle that discharges an adhesive between the upper sheet and the lower sheet; an upper support portion provided on an upstream side of the nozzle in a conveying direction and supporting an upper sheet from below; an upper pinch roller provided on an upstream side of the nozzle in a conveying direction, pinching the upper sheet between the upper pinch roller and the upper supporting portion, and moving the upper sheet in a crossing direction crossing the conveying direction and the up-down direction; an upper detecting portion that detects whether or not the upper sheet is at an upper detection position between the lower conveying roller and the upper pinch roller in the conveying direction; and a restriction portion that is located between the lower conveying roller and the upper pinch roller in the conveying direction and restricts upward movement of the upper sheet.

Description

Bonding device
Technical Field
The present invention relates to an adhesive bonding apparatus.
Background
Japanese patent application laid-open No. 172830 discloses an adhesive device having an upper nip roller, a support member, and an upper detection portion. The upper pinch roller sandwiches the upper sheet between the upper sheet and the support member, and can move the upper sheet in a crossing direction crossing the conveying direction of the upper sheet. The upper detection part has a light emitting part and a light receiving part. When the upper sheet is not at the upper detection position, light emitted from the light emitting portion toward the upper detection position is reflected by an upper reflecting portion provided to the support member, and the light receiving portion receives the reflected light. At this time, the bonding device moves the upper sheet to the intersecting direction side by the upper nip roller. When the end of the upper sheet is at the upper detection position, light emitted from the light emitting portion toward the upper detection position is not reflected by the upper reflecting portion, and the light receiving portion does not receive the reflected light. At this time, the bonding device moves the upper sheet to the other side in the intersecting direction by the upper pinch roller.
In some cases, the bonding device cannot accurately detect the position of the end portion of the upper sheet according to the upper detection position when bonding is performed using a sheet that is relatively easy to curl, or when the end portion of the upper sheet curls due to rotation of the upper pinch roller. In this case, the bonding device may erroneously detect the position of the end portion of the upper sheet, and may move the upper sheet in an erroneous direction.
Disclosure of Invention
The invention aims to provide an adhesive device capable of accurately detecting the end of a sheet.
The adhesive device according to claim 1, which bonds the upper sheet and the lower sheet together with an adhesive, is characterized by comprising: a conveying mechanism, the conveying mechanism comprising: a lower conveying portion that supports the lower sheet from below; and an upper conveying portion that contacts the upper sheet from an upper side and sandwiches the upper sheet and the lower sheet between the upper conveying portion and the lower conveying portion, the conveying mechanism conveying the lower sheet and the upper sheet in a predetermined conveying direction by the lower conveying portion and the upper conveying portion; a nozzle that discharges the adhesive between the upper sheet and the lower sheet; an upper support portion provided on an upstream side of the nozzle in the conveying direction and supporting the upper sheet from below; an upper roller provided on an upstream side of the nozzle in the conveying direction, sandwiching the upper sheet between the upper roller and the upper supporting portion, and moving the upper sheet in a crossing direction crossing the conveying direction and the up-down direction; an upper detecting portion that detects whether the upper sheet is at an upper detection position between the conveying mechanism and the upper roller in the conveying direction; and a restriction portion that is located between the conveying mechanism and the upper roller in the conveying direction and restricts upward movement of the upper sheet.
The bonding device can suppress curling of the upper sheet by the restriction portion. Therefore, the bonding device can appropriately detect the end portion of the upper sheet by the upper detection portion, and can suppress erroneous movement of the upper sheet in the intersecting direction.
The restriction portion of the bonding device of claim 2 is located between the upper detection position and the upper roller in the conveying direction. The bonding device can suppress curling of the upper sheet at a position closer to the upper detection position. Therefore, the bonding device can accurately detect the end portion of the upper sheet.
The bonding apparatus according to claim 3 has an upper arm rotatably supporting the upper roller, the upper arm being swingable in the up-down direction, and the restricting portion is provided on the upper arm. The adhesive device can be miniaturized compared with the case of holding the restricting portion by another mechanism. Since the bonding device includes the restricting portion provided on the upper arm supporting the upper roller, the restricting portion can be disposed closer to the upper roller, and curling of the upper sheet due to rotation of the upper roller can be effectively suppressed.
The adhesive device according to claim 4 has a detection support portion for supporting the upper detection portion, wherein the restriction portion is located at a restriction position near the upper sheet from above when the upper arm swings downward, and the restriction portion is located at an unrestricted position, which is a position away from the upper sheet and on the side of the detection support portion in the cross direction, when the upper arm swings upward. The bonding device is capable of moving the restricting portion to the non-restricting position in accordance with upward swing of the upper arm when the upper roller is not performing positioning control of the upper sheet. Therefore, the bonding apparatus can reduce the possibility that the restriction portion hinders the bonding operation.
The restriction portion of the adhesive device according to claim 5 is rotatably provided on the upper arm, the upper arm includes a biasing portion that biases the restriction portion toward one side in the rotation direction, the detection support portion includes a protrusion portion, and the restriction portion is rotated toward one side in the rotation direction by the biasing force of the biasing portion when the upper arm swings downward, and is positioned at the restriction position, and the restriction portion abuts against the protrusion portion and is rotated toward the other side in the rotation direction against the biasing force of the biasing portion when the upper arm swings upward, and is moved to the non-restriction position. The bonding device does not require a drive source for moving the restricting portion to the restricting position and the non-restricting position. Therefore, the bonding apparatus can simplify the structure of the restriction portion.
The restriction portion of the bonding device of claim 6 has an inclined portion inclined downward from the upstream side toward the downstream side in the conveying direction. The bonding device can smoothly pass the upper sheet through the limiting part to perform bonding operation.
In the bonding apparatus according to claim 7, a lower end portion of the regulating portion is located above a lower end portion of the upper roller in the vertical direction. The bonding device can properly bring the upper roller into contact with the upper sheet without being disturbed by the restricting portion, and can reliably move the upper sheet in the intersecting direction by the upper roller.
The bonding device according to claim 8 has the restricting portion extending in the intersecting direction, and at least one of the intersecting direction both end portions of the restricting portion is located outside the upper roller in the intersecting direction. The bonding device can restrain the upper sheet from curling caused by the rotation of the upper roller by using the limiting part. Therefore, the bonding device can accurately detect the end portion of the upper sheet.
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 a front view of the bonding apparatus 1 (nozzle 6A: near position, upper arm 50: swung down).
Fig. 4 is a left side view of the bonding apparatus 1 (nozzle 6A: near position, upper arm 50: swung down).
Fig. 5 is a perspective view of the lower conveying mechanism 10A.
Fig. 6 is a perspective view of the internal configuration of the lower conveying mechanism 10A.
Fig. 7 is a perspective view of the internal configuration of the lower conveying mechanism 10A.
Fig. 8 is a left side view of the cylindrical portion 32 (lower conveying roller 3A: lower contact position).
Fig. 9 is a left side view of the cylindrical portion 32 (lower conveying roller 3A: lower separated position).
Fig. 10 is a perspective view of the transfer mechanism 3F, the switching portion 3G, and the lower pinch roller 3C.
Fig. 11 is a front view of the bonding apparatus 1 (nozzle 6A: retracted position, upper arm 50: swung up).
Fig. 12 is a left side view of the bonding apparatus 1 (nozzle 6A: retracted position, upper arm 50: swung up).
Fig. 13 is an enlarged view of the vicinity of the rear end portion of the tubular portion 32 (opening 35A closed).
Fig. 14 is an enlarged view of the vicinity of the rear end portion of the cylindrical portion 32 (the opening 35A is open).
Fig. 15 is a perspective view of the nozzle 6A and the upper support portion 6B.
Fig. 16 is an enlarged perspective view of the vicinity of the upper support portion 6B.
Fig. 17 is a perspective view of the upper arm 50.
Fig. 18 is a right side view of the vicinity of the rear end portion of the cylindrical portion 32.
Fig. 19 is a rear view (upper arm 50: swung down) of the vicinity of the nozzle 6A.
Fig. 20 is a rear view (upper arm 50: swung up) of the vicinity of the nozzle 6A.
Detailed Description
In the following description, the left and right, front and back, and up and down, which are indicated by arrows in the drawings, are used. The bonding device 1 bonds the upper sheet 9A and the lower sheet 9B together with an adhesive (see fig. 5). The upper sheet 9A is overlapped with the lower sheet 9B from the upper side. The upper sheet 9A and the lower sheet 9B are, for example, cloth having flexibility. As an example, the sheet 90 formed in a cylindrical shape has an upper sheet 9A on one end side and a lower sheet 9B on the other end side (see fig. 5). The bonding apparatus 1 bonds together a lower sheet end portion 90B (see fig. 5) which is a right end portion of the lower sheet 9B and an upper sheet end portion 90A (see fig. 5) which is a left end portion of the upper sheet 9A with an adhesive. The upper sheet 9A and the lower sheet 9B may be different cloths.
The bonding apparatus 1 conveys the upper sheet 9A and the lower sheet 9B rearward during the bonding operation. The front-rear direction is sometimes referred to as a conveyance direction. The rear side is sometimes referred to as the downstream side in the conveying direction, and the front side is sometimes referred to as the upstream side in the conveying direction. The left-right direction orthogonal to the conveying direction and the up-down direction is sometimes referred to as a crossing direction.
With reference to fig. 1 to 4, an outline of the structure of the bonding apparatus 1 will be described. As shown in fig. 1 and 3, the bonding apparatus 1 includes a base portion 1A, a pillar portion 1B, a arm portion 1C, and a head portion 1D. The base portion 1A is rectangular parallelepiped and is fixed to a table. The pillar portion 1B extends upward from the upper end portion of the base portion 1A. The arm portion 1C extends leftward from the upper end portion of the pillar portion 1B. The left end of the arm 1C is the nose 1D.
The base portion 1A supports the fixing portion 1E. The fixing portion 1E extends in the front-rear direction and is fixed to the left surface of the base portion 1A. The front portion of the fixing portion 1E extends further to the front side than the front end of the base portion 1A, and supports the lower conveying mechanism 10A at the front end. The lower conveying mechanism 10A includes a lower conveying roller 3A, a nozzle lower roller 3B, a lower pinch roller 3C, a lower driving portion 3D (see fig. 7), and the like, which will be described later. The lower conveying roller 3A, the nozzle lower roller 3B, and the lower pinch roller 3C are respectively in contact with the lower sheet 9B from below. The lower conveying roller 3A, the nozzle lower roller 3B, and the lower pinch roller 3C are driven by a lower driving portion 3D. In this case, the lower conveying roller 3A and the nozzle lower roller 3B convey the lower sheet 9B in the conveying direction, and the lower pinch roller 3C moves the lower sheet 9B in the intersecting direction.
The nose portion 1D has an attachment portion 11 for attaching the liner at an upper end. The mounting portion 11 has a box-shaped cover 11A extending upward from the upper surface of the nose portion 1D. The mounting portion 11 includes a housing portion 11B, a heater, and the like. The housing portion 11B extends in the up-down direction inside the cover 11A, and the liner can be attached to and detached from the inside of the housing portion 11B. The inner container accommodates a hot-melt adhesive. The adhesive becomes liquid at a predetermined temperature or higher and becomes solid at a predetermined temperature or lower. The heater heats the liner accommodated in the accommodating portion 11B, and melts the adhesive to become a liquid.
As shown in fig. 2, the supply mechanism 45 supplies the adhesive in the liner to the nozzle 6A. The supply mechanism 45 has a pump motor 114 and a gear pump 115. The pump motor 114 is provided inside the arm portion 1C (see fig. 1). The pump motor 114 has an output shaft 114A. The gear pump 115 is provided on the front side of the fitting portion 11. The output shaft 114A is coupled to the gear pump 115 via the gear 46A. The gear pump 115 pumps the adhesive in the bladder.
As shown in fig. 1 to 4, the head 1D supports an upper conveying mechanism 10B (see fig. 4), an upper moving mechanism 10C (see fig. 1 and 3), a nozzle moving mechanism 10D, and the like. As shown in fig. 4, the upper conveying mechanism 10B has an upper conveying roller 4A, an upper driving section 4B, and the like. The upper conveying roller 4A is driven by an upper driving portion 4B, which contacts the upper sheet 9A from above and conveys the upper sheet 9A in the conveying direction. As shown in fig. 3, the upper moving mechanism 10C has an upper pinch roller 5A, an upper driving portion 5B, and the like. The upper pinch roller 5A is driven by an upper driving portion 5B, which contacts the upper sheet 9A from above and moves the upper sheet 9A in the intersecting direction. As shown in fig. 4, the nozzle moving mechanism 10D has a nozzle 6A. The nozzle 6A discharges the adhesive supplied by the supply mechanism between the upper sheet 9A and the lower sheet 9B.
The pillar portion 1B has a setting portion 12 at the front left end portion. The setting unit 12 is a plurality of buttons arranged in the up-down direction. When an operator desires to perform an operation instruction to the bonding apparatus 1, the operator inputs the operation instruction to the setting unit 12.
As shown in fig. 1 and 5, the lower conveying mechanism 10A has a housing portion 31 and a cylindrical portion 32. The housing portion 31 is connected to the front end of the fixing portion 1E (see fig. 1). The housing portion 31 has a box shape extending in the left-right direction, and is located on the front side of the base portion 1A, the pillar portion 1B, the arm portion 1C, and the nose portion 1D in the conveying direction. The housing portion 31 houses the lower driving portion 3D and the switching portion 3G (see fig. 7 and 10). The housing portion 31 has a protruding portion 31A protruding rearward at the rear end and at the center in the lateral direction. As shown in fig. 4, the protruding portion 31A is provided with a support shaft 33 extending in the left-right direction and having a columnar shape.
As shown in fig. 1 and 5, the cylindrical portion 32 has an elongated box shape, and extends from the receiving portion 31 rearward in the conveying direction. The housing portion 31 is located on the front side of the cylindrical portion 32. The upper surface of the cylindrical portion 32 is disposed on the same plane as the upper surface of the housing portion 31. The lower surface of the cylindrical portion 32 is disposed above the lower surface of the housing portion 31. The cylindrical portion 32 has a left wall 32L and an extension plate 34B (see fig. 6). The extension plate 34B forms the right side surface of the cylindrical portion 32. The cylindrical portion 32 accommodates the lower conveying roller 3A, the nozzle lower roller 3B, the lower pinch roller 3C, the belt 3E, the transmission mechanism 3F (see fig. 7), and the lower detecting portion. The left wall 32L has a plate shape extending parallel to the extension plate 34B. The left wall 32L forms the left side surface of the cylindrical portion 32.
As shown in fig. 6, a part of the cylindrical portion 32 on the front side is located in the protruding portion 31A of the housing portion 31. As shown in fig. 7, a hole 320A is provided in a portion of the extension plate 34B located in the protruding portion 31A of the housing portion 31. The hole 320A is located on the front side of the central portion of the extension plate 34B in the front-rear direction. A hole 320B is provided in a portion of the left wall 32L of the tubular portion 32 located in the protruding portion 31A of the housing portion 31 (see fig. 8). The hole 320B is located near the front end portion of the left wall 32L. The support shaft 33 provided in the protruding portion 31A of the housing portion 31 is inserted into the holes 320A and 320B. The housing portion 31 rotatably supports the cylindrical portion 32 via a support shaft 33 so that the cylindrical portion 32 is rotatable. The spring biases the front portion of the cylindrical portion 32 upward.
The lower driving section 3D has a lower gap motor 30A, a lower conveying motor 30B, a lower motor 30C, and a cylinder 30D. The lower gap motor 30A is a driving source for swinging the cylindrical portion 32 in the up-down direction. The lower conveying motor 30B is a driving source for rotating the lower conveying roller 3A and the nozzle lower roller 3B. The lower motor 30C is a driving source for rotating the lower pinch roller 3C. The air cylinder 30D is a driving source for moving the lower pinch roller 3C up and down.
The eccentric cam 34A is connected to a rotation shaft 301 extending leftward of the lower gap motor 30A. The eccentric cam 34A is a circular plate cam. The eccentric cam 34A is eccentric so that the distance between the outer periphery thereof and the rotation shaft 301 changes. The extension plate 34B extends from above in the left direction of the lower gap motor 30A, then bends toward the rear side, and extends in the conveying direction. A hole 341 is provided in the front end portion of the extension plate 34B. The hole 341 has an abutment portion 341A protruding inward. The diameter of the hole 341 becomes smaller at the abutment portion 341A. The eccentric cam 34A is located in the hole 341. The eccentric cam 34A is held in contact with the contact portion 341A by a spring that biases the front portion of the cylindrical portion 32 upward.
The position of the eccentric cam 34A that is in contact with the contact portion 341A of the hole 341 is switched with the eccentric cam 34A by rotating the lower gap motor 30A in the hole 341. At this time, the distance between the rotating shaft 301 of the lower gap motor 30A and the abutment portion 341A varies, and the tip end portion of the extension plate 34B moves in the up-down direction. The extension plate 34B rotates about the support shaft 33, and swings the rear end portion of the extension plate 34B in the up-down direction. At this time, the tubular portion 32 swings its rear end portion in the up-down direction about the support shaft 33. Specifically, as shown in fig. 8, when the front end portion of the extension plate 34B is moved downward by the rotation of the eccentric cam 34A (arrow Y11), the rear end portion of the cylindrical portion 32 is moved upward (arrow Y12). As shown in fig. 9, when the front end portion of the extension plate 34B is moved upward by the rotation of the eccentric cam 34A (arrow Y13), the rear end portion of the cylindrical portion 32 is moved downward (arrow Y14).
As shown in fig. 6 and 7, the cylindrical portion 32 accommodates the lower conveying roller 3A, the nozzle lower roller 3B, the lower pinch roller 3C, and the lower detecting portion at the rear end portion. The lower conveying roller 3A is located at the rearmost end of the cylindrical portion 32. The cylindrical portion 32 rotatably supports the shaft 321 extending in the left-right direction by the rear end portion thereof. The shaft 321 is inserted into the lower conveying roller 3A and rotates together with the lower conveying roller 3A. Therefore, the cylindrical portion 32 rotatably supports the lower conveying roller 3A via the shaft 321 and the lower conveying roller 3A. The shaft 321 has a pulley 38A on the right side of the lower conveying roller 3A.
The nozzle lower roller 3B is adjacent to the lower conveying roller 3A at a position on the front side of the lower conveying roller 3A in the cylindrical portion 32. The cylindrical portion 32 rotatably supports a shaft 322 extending in the left-right direction at a position on the front side of the shaft 321, the shaft 322. The shaft 322 is inserted into the nozzle lower roller 3B and rotates together with the nozzle lower roller 3B. Therefore, the cylindrical portion 32 rotatably supports the nozzle lower roller 3B via the shaft 322 so that the nozzle lower roller 3B can rotate. The shaft 322 has a pulley 38B on the right side of the nozzle lower roller 3B.
The lower pinch roller 3C is adjacent to the nozzle lower roller 3B at a position on the front side of the nozzle lower roller 3B in the cylindrical portion 32. The lower pinch roller 3C is rotatably supported by a transmission mechanism 3F described later.
As shown in fig. 5, the cylindrical portion 32 has covers 323, 35. The cover 323 is a plate-like member extending in the front-rear direction, and is fixed to the upper end portions of the extending plate 34B and the left wall 32L to form the front upper surface of the cylindrical portion 32. The cover 323 has a notch 32C at the rear end portion, which is formed by leaving the cover 323 one piece in front. The lower pinch roller 3C is located below the notch 32C. An opening 35A (see fig. 14) is provided at the rear end portion of the cylindrical portion 32 and on the upper surface thereof, and further toward the rear than the cover 323. The lower conveying roller 3A and the nozzle lower roller 3B are located below the opening 35A. The plate-like cover 35 is made of metal, and the cover 35 can be attached to the cylindrical portion 32 by the magnetic force of a magnet provided at the rear upper end portion of the extension plate 34B and the left wall 32L. The cover 35 closes the opening 35A when assembled to the cylindrical portion 32. At this time, the rear end 351 of the cover 35 protrudes rearward of the rear end of the lower conveying roller 3A (see fig. 13 and 18).
The cover 35 has a notch 32A and a hole 32B. The notch 32A is a portion formed by leaving the rear end portion of the cover 35 one piece forward. The hole 32B is provided on the front side of the notch 32A and has a substantially rectangular shape in plan view. The lower conveying roller 3A is located below the notch 32A, and the upper end portion of the lower conveying roller 3A can slightly protrude upward from the notch 32A. The nozzle lower roller 3B is located below the hole 32B, and the upper end portion of the nozzle lower roller 3B can slightly protrude upward from the hole 32B.
When the cylindrical portion 32 is swung by the driving of the lower gap motor 30A, the lower conveying roller 3A and the nozzle lower roller 3B move in the up-down direction (refer to fig. 8 and 9). When the rear end portion of the tubular portion 32 is moved upward by the driving of the lower gap motor 30A, a gap between the nozzle 6A and the cap 35 described later becomes smaller. As shown in fig. 8, when the rear end portion of the tubular portion 32 is moved to the uppermost position, a gap between the nozzle 6A and the cap 35, which will be described later, is minimized. The positions of the lower conveying roller 3A and the nozzle lower roller 3B at this time are referred to as a lower contact position.
When the rear end portion of the tubular portion 32 is moved downward by the driving of the lower gap motor 30A, a gap between the nozzle 6A and the cap 35 described later becomes large. As shown in fig. 9, when the rear end portion of the cylindrical portion 32 moves to the lowermost position, a gap between the nozzle 6A and the cap 35, which will be described later, is maximized. The positions of the lower conveying roller 3A and the nozzle lower roller 3B at this time are referred to as a lower exit position.
As shown in fig. 7, the lower conveying motor 30B is fixed to the right side surface of the front end portion of the extension plate 34B. The rotation shaft of the lower conveying motor 30B extends leftward and protrudes leftward from a hole 34H provided in the extension plate 34B. The rotating shaft has a pulley at a tip end. The belt 3E is stretched between a pulley 38A provided on a shaft 321 inserted in the lower conveying roller 3A, a pulley 38B provided on a shaft 322 inserted in the nozzle lower roller 3B, and a pulley of the lower conveying motor 30B. The belt 3E extends in the conveying direction within the cylindrical portion 32. The belt 3E transmits the driving force of the lower conveying motor 30B to the lower conveying roller 3A and the nozzle lower roller 3B via pulleys 38A, 38B. The lower conveying roller 3A and the nozzle lower roller 3B rotate in accordance with the driving of the lower conveying motor 30B. The pulleys 38A, 38B are of the same diameter. Accordingly, the lower conveying roller 3A and the nozzle lower roller 3B are driven to rotate in the same direction at the same speed in accordance with the driving of the lower conveying motor 30B.
The lower conveying roller 3A and the nozzle lower roller 3B support the lower sheet 9B from below, and convey the lower sheet 9B to the downstream side in the conveying direction by rotating. The rear end 351 of the cover 35 can suppress the upper sheet 9A and the lower sheet 9B from being wound around the lower conveying roller 3A during conveyance.
As shown in fig. 7 and 10, the lower motor 30C is provided to the left of the extension plate 34B. The rotation shaft of the lower motor 30C extends to the rear side. The transmission mechanism 3F has a support portion 37A, an arm portion 37B, an extension portion 36, a belt 36A, and pulleys 36B, 36C. The support portion 37A is box-shaped and is provided at the rear side of the lower motor 30C. The support portion 37A has a hole 371 penetrating in the front-rear direction. The arm 37B accommodates the belt 36A inside, and the arm 37B is fixed to the lower motor 30C. The arm 37B has a connecting plate portion 372, a cylindrical portion 373, a cylindrical portion 374, and a connecting portion 375.
The coupling plate 372 is fixed to the rear surface of the lower motor 30C. The web 372 has a rectangular shape when viewed from the rear. The cylindrical portion 373 extends rearward from the rear surface of the connecting plate portion 372 and has a circular shape when viewed from the rear. The cylindrical portion 373 and the connecting plate portion 372 have holes penetrating in the front-rear direction, and the holes are located on the front side of the holes 371 of the support portion 37A. The cylindrical portion 374 has a circular shape when viewed from the rear, and extends in the front-rear direction inside the hole 371 of the support portion 37A, the cylindrical portion 373, and the hole portion of the connecting plate portion 372. The rear portion of the cylindrical portion 374 is located at a rear side of the support portion 37A. The front portion of the cylindrical portion 374 is fixed to the cylindrical portion 373. The support portion 37A rotatably supports the cylindrical portion 374 in the cylindrical portion 374. A limiting plate 335 extending forward and having a plate shape is provided on the left surface of the support 37A.
The coupling portion 375 is fixed to the rear end portion of the cylindrical portion 374. The joint 375 has a base 375A and plate portions 375B, 375C. The base 375A is fixed to the rear end portion of the cylindrical portion 374 with four screws 370. The base 375A has a front-rear direction thickness. The base 375A has a notch 376 formed by cutting one piece from the upper right to the lower left.
The arc-shaped plate portion 375B extends rightward and upward from the front end of the base portion 375A. The arc-shaped plate portion 375C extends rightward and upward from the rear end of the base portion 375A. The upper right portions of the plate portions 375B, 375C rotatably support the extension portion 36 in such a manner that the extension portion 36 is rotatable. The extension 36 extends in the front-rear direction inside the cylindrical portion 32. The extension 36 fixes the lower pinch roller 3C at its rear end portion. The lower pinch roller 3C rotates about a rotation axis parallel to the conveying direction, and moves the lower sheet 9B in the intersecting direction.
The drive shaft 302 passes through a hole provided inside the cylindrical portion 374 and extends inside the notch 376 of the connecting portion 375. The front end of the drive shaft 302 is coupled to the output shaft of the lower motor 30C, and is rotated by the lower motor 30C. The pulley 36B is provided at the rear end portion of the drive shaft 302. Pulley 36C is provided in the portion of extension 36 between plate portion 375B and plate portion 375C. The belt 36A is stretched over pulleys 36B, 36C. Arm 37B accommodates belt 36A between plate 375B and plate 375C and inside notch 376. When the lower motor 30C is driven, the lower pinch roller 3C is rotated by the drive shaft 302, the pulley 36B, the belt 36A, the pulley 36C, and the extension 36.
The switching section 3G moves the lower pinch roller 3C up and down. The switching unit 3G has a cylinder 30D at a position to the left of the support unit 37A. The rod 331 of the cylinder 30D extends upward. The lever 331 has an abutment portion 331A at an upper end portion. The contact portion 331A is cylindrical.
The lever portion 332 extends leftward from the cylindrical portion 373 of the arm portion 37B. The cylindrical portion 374 has a stem portion 345 on the rear left surface. The stem 345 extends to the left. The upper end of the spring 342 is locked to the rod 345. The lower end of the spring 342 is locked to a bolt 343 fixed to the support 37A.
The support portion 37A rotatably supports the cylindrical portion 374 of the arm portion 37B so that the cylindrical portion 374 of the arm portion 37B is rotatable. Therefore, the arm 37B can swing around the drive shaft 302 of the lower motor 30C. The spring 342 biases the lever 345 downward, and thereby biases the lower pinch roller 3C upward via the arm 37B. In a state where the rod 331 of the air cylinder 30D moves downward, the lower pinch roller 3C is positioned at the uppermost position. The position of the lower pinch roller 3C at the uppermost position is referred to as a lower pinch position. At this time, the upper end of the lower pinch roller 3C slightly protrudes upward from the notch 32C and can be brought into contact with the lower sheet 9B.
In a state where the rod 331 of the cylinder 30D is moved upward, the abutting portion 331A moves the rod 332 upward. With the movement of the lever 332, the arm 37B swings around the drive shaft 302 against the urging force of the spring 342. At this time, the lower pinch roller 3C moves downward. When the lever 332 moves upward to contact the restricting plate 335, the lower pinch roller 3C is positioned at the lowest position. The position of the lower pinch roller 3C at the lowest position is referred to as a lower position. At this time, the lower pinch roller 3C is located below the notch 32C and is separated downward from the lower sheet 9B.
When the lower pinch roller 3C is in the lower pinch position, it contacts the lower sheet 9B from below, and sandwiches the lower sheet 9B between the lower sheet and an upper support portion 6B described below. When the transmission mechanism 3F transmits the driving force of the lower motor 30C to the lower pinch roller 3C in this state, the lower pinch roller 3C rotates to move the lower sheet 9B in the intersecting direction.
The lower detection portion is located within the cylindrical portion 32 and below the hole 32B. The lower detection part has a light emitting part and a light receiving part. The light emitting portion emits light toward a reflection plate provided on the lower surface of the upper support portion 6B. The light receiving unit is capable of receiving the light emitted from the light emitting unit and reflected by the reflecting plate. The lower detection portion can detect whether or not a lower sheet end portion 90B (see fig. 5) which is a right end portion of the lower sheet 9B is at a predetermined lower detection position.
As shown in fig. 4 and 12, the upper conveying mechanism 10B has an upper conveying roller 4A, an upper driving section 4B, a support arm 40, and an air cylinder. The support arm 40 extends obliquely downward forward from the lower end of the nose portion 1D. The nose portion 1D supports the support arm 40 so that the support arm 40 can swing. The support arm 40 rotatably supports the upper conveying roller 4A at a lower end portion thereof with respect to the upper conveying roller 4A. The upper conveying roller 4A rotates about a rotation axis extending in the left-right direction. The cylinder can swing the support arm 40 in the up-down direction by the advance-retreat movement of the lever. The upper conveying roller 4A is moved up and down by the swinging of the supporting arm 40.
As shown in fig. 4, the upper conveying roller 4A is opposed to the lower conveying roller 3A in the up-down direction when moving downward. The position of the upper conveying roller 4A at this time is referred to as an upper contact position. When the upper conveying roller 4A moves upward, it moves upward away from the lower conveying roller 3A. The position of the upper conveying roller 4A at this time is referred to as an upper exit position.
The upper driving section 4B has an upper conveying motor 41. The transmission mechanism provided inside the support arm 40 transmits the driving force of the upper conveying motor 41 to the upper conveying roller 4A. The upper conveying roller 4A rotates in accordance with the driving of the upper conveying motor 41. The upper conveying roller 4A contacts the upper sheet 9A from the upper side when in the upper contact position. The upper conveying roller 4A sandwiches the upper sheet 9A and the lower sheet 9B between it and the lower conveying roller 3A. The upper conveying roller 4A conveys the upper sheet 9A along with the lower sheet 9B to the downstream side in the conveying direction by rotating.
As shown in fig. 1 to 4, the nozzle moving mechanism 10D includes a nozzle support portion 60, a nozzle 6A (see fig. 4), an upper support portion 6B, a nozzle motor 67, and a support shaft. The nozzle motor 67 is a pulse motor provided on the left side inside the nose portion 1D. The nozzle motor 67 has an output shaft to which a worm is fixed. The support shaft extends in the left-right direction above the worm and has a cylindrical shape. The support shaft supports a worm wheel 672 that engages the upper end of the worm. The support shaft rotates together with the worm gear 672 by the power of the nozzle motor 67. The support shaft has an adhesive flow path inside. The gear pump 115 supplies the sucked adhesive to a flow path in the support shaft.
The nozzle support 60 extends in the up-down direction. The nozzle support 60 has a cover 61 and a lever member 62. The lever member 62 is provided on the left side of the worm wheel 672, extends downward from the left end of the support shaft, and has an arm shape. The support shaft supports the lever member 62 so that the lever member 62 can swing. The flow path provided inside the lever member 62 communicates with the flow path inside the support shaft. The lever member 62 has a heater near the flow path. The heat of the heater is transferred to the adhesive flowing in the flow path. The cover 61 extends in the up-down direction, and covers the lever member 62 and lower sheet presser feet 6C, 6D described later. The nozzle 6A and the upper support portion 6B are provided at the lower end portion of the nozzle support portion 60.
The nozzle 6A and the upper support portion 6B protrude downward from the lower end of the nozzle support portion 60. The nozzle 6A moves between the approach position (see fig. 3 and 4) and the retreat position (see fig. 11 and 12) in response to the swing of the nozzle support portion 60. The nozzle 6A at the close position is closer to the upper conveying roller 4A at a position on the upstream side in the conveying direction than the upper conveying roller 4A at the upper contact position. The nozzle 6A at the retracted position is separated upstream in the conveying direction from the nozzle 6A at the approaching position (see fig. 3 and 4). The nozzle support unit 60 supports the nozzle 6A so that the nozzle 6A can move between the approach position and the retreat position.
As shown in fig. 2 and 3, the lower sheet presser foot 6C is fixed to the front surface of the lever member 62 of the nozzle support portion 60, and is located on the upper side of the cylindrical portion 32. The lower sheet presser foot 6C is constituted by an air cylinder, and has a cylinder 63 and a pressing portion 64. The cylinder 63 has a rectangular parallelepiped shape, and the rod protrudes downward. The pressing portion 64 is provided at the lower end of the rod of the cylinder. The pressing portion 64 can move up and down in accordance with the advance and retreat of the lever. When the pressing portion 64 moves upward, the lower end portion 64A of the pressing portion 64 moves upward away from the tubular portion 32. When the pressing portion 64 moves downward from this state, the pressing portion 64 moves obliquely downward to the right. At this time, the lower end 64A contacts the upper surface of the cylindrical portion 32. The pressing portion 64 presses the lower sheet 9B between the lower end portion 64A and the cylindrical portion 32 at a position on the front side of the nozzle 6A and the upper support portion 6B.
A mounting portion 65 is provided at the lower end of the cylinder 63. The mounting portion 65 is a bent plate having a first portion 65A and a second portion 65B. The first portion 65A is connected to the lower end of the cylinder 63 and extends in the left-right direction. The second portion 65B extends downward from the left end of the first portion 65A. The upper support portion 6B described later is fixed to the second portion 65B.
As shown in fig. 4, the lower sheet presser foot 6D is fixed to the rear surface of the lever member 62 of the nozzle support portion 60, and is located above the cylindrical portion 32. The lower sheet presser foot 6D is constituted by an air cylinder, and has a cylinder 68 and a pressing portion 69. The cylinder 68 has a rectangular parallelepiped shape, and the rod protrudes downward. The pressing portion 69 is provided at the lower end of the rod of the cylinder. The pressing portion 69 can move up and down in accordance with the advance and retreat of the lever. When the pressing portion 69 moves upward, the lower end portion 69A of the pressing portion 69 moves upward away from the tubular portion 32. When the pressing portion 69 moves downward from this state, the pressing portion 69 moves obliquely downward to the right. At this time, the lower end 69A contacts the upper surface of the cylindrical portion 32. The pressing portion 69 presses the lower sheet 9B between the lower end portion 69A and the cylindrical portion 32 at a position rearward of the nozzle 6A and the upper support portion 6B.
As shown in fig. 13, when the nozzle 6A is in the close position, the upper detection portion 6E is located right of the nozzle support portion 60. The upper detection section 6E has a light emitting section and a light receiving section. The light emitting portion emits light toward a reflecting plate 671 described later provided in the nozzle 6A. The light receiving portion can receive the light emitted from the light emitting portion and reflected by the reflecting plate 671. A position overlapping with an upper sheet end 90A (see fig. 5) which is a left end of the upper sheet 9A on a path of light emitted from the light emitting portion is referred to as an upper detection position P. The upper detection portion 6E can detect whether the upper sheet end 90A is at the upper detection position P.
The detection support portion 7A supports the upper detection portion 6E. The detection support portion 7A has extension portions 71A, 71B, 71C and a projection portion 71D. The extension 71A extends in the left-right direction below the nose portion 1D. The extension 71B extends downward from the left end of the extension 71A. The extension 71C extends rightward from the lower end of the extension 71B. The extension portion 71C inserts the upper detection portion 6E into a hole provided at the center in the lateral direction thereof, and holds the upper detection portion 6E. The protruding portion 71D is connected to the right end of the extension portion 71C and protrudes in the up-down direction.
The right surface 72 of the protruding portion 71D has a first portion 72A and a second portion 72B. The first portion 72A and the second portion 72B are adjacent in the up-down direction. The first portion 72A is a portion approximately halfway up the right surface 72 of the protruding portion 71D. The first portion 72A is orthogonal to the left-right direction. The second portion 72B is a portion of the right surface 72 of the protruding portion 71D that is substantially half of the lower side. The second portion 72B is inclined with respect to the first portion 72A. The protruding portion 71D extends downward from the upper end in a direction from the right surface 72 toward the lower end at the first portion 72A, and extends obliquely downward to the left at the second portion 72B. The detection support portion 7A is switched in position by swinging a restricting mechanism 7B described later.
Fig. 15 shows the state of the nozzle 6A in the close position. The nozzle 6A has a coupling portion 67A and extension portions 67B, 67C. The connection portion 67A is connected to the lower end of the lever member 62 of the nozzle support portion 60. The hole 670 provided in the coupling portion 67A communicates with a supply path of the adhesive provided in the lever member 62. The extension portion 67B extends downward from the coupling portion 67A. The extension 67C extends horizontally from the lower end of the extension 67B toward the right. Accordingly, the nozzle 6A extends downward from the nozzle support portion 60 at the connecting portion 67A and the extension portion 67B, bends rightward at the lower end, and extends horizontally at the extension portion 67C.
The nozzle 6A has an adhesive supply path so as to extend over the inside of each of the connecting portion 67A and the extending portions 67B and 67C. The upper end of the supply path communicates with the hole 670 of the connecting portion 67A. The lower end of the supply path communicates with an adhesive discharge port provided at the lower end of the extension 67C. The adhesive supplied from the liner through the supply path of the lever member 62 flows through the supply path of the nozzle 6A and is discharged downward from the discharge port.
The extension 67C has a reflection plate 671 on the upper surface. The reflection plate 671 reflects light emitted from the light emitting section of the upper detection section 6E (see fig. 13) toward the light receiving section.
As shown in fig. 13, the extended portion 67C of the nozzle 6A at the close position is located above the nozzle lower roller 3B. The extended portion 67C of the nozzle 6A at the close position is opposed to the nozzle lower roller 3B in the up-down direction. As shown in fig. 11 and 12, the nozzle 6A at the retracted position is separated upstream in the conveying direction from the nozzle 6A at the approaching position (see fig. 3 and 4).
As shown in fig. 15, the upper support portion 6B includes a coupling portion 66A, extension portions 66B, 66C, and a cover 665. As shown in fig. 2, the connecting portion 66A is connected to a second portion 65B of the mounting portion 65 connected to the lower sheet presser foot 6C. The extension portion 66B extends downward from the coupling portion 66A. The cover 665 is made of resin and is fixed to the left surface of the extension 66B. The extension 66C extends horizontally from the lower end of the extension 66B toward the right. Therefore, in the upper support portion 6B, the connecting portion 66A and the extension portion 66B extend downward from the nozzle support portion 60, and the extension portion 66C extends horizontally while being bent rightward at the lower end (see fig. 3). The extension 66C is plate-shaped. The extension portion 66C has a protruding portion 661 protruding rearward from the vicinity of the right end. The rear end 66D of the protruding portion 661 extends to the vicinity of the front end of the extension portion 67C of the nozzle 6A. The protruding portion 661 has a recess 662 at the rear end 66D. The recess 662 extends from the rear end 66D toward the front side. The recess 662 forms a hole extending downward from the upper surface of the protruding portion 661 and having a bottom shape.
The extension 66C has a reflection plate on the lower surface. The reflecting plate reflects light emitted from the light emitting portion provided in the lower detection portion of the tubular portion 32 toward the light receiving portion. The lower detection portion detects the presence or absence of a lower sheet end portion 90B (see fig. 5) of the lower sheet 9B, based on whether or not the light receiving portion receives the light emitted from the light emitting portion.
When the nozzle 6A is in the close position, the upper support portion 6B is located on the front side of the nozzle 6A. Specifically, as shown in fig. 3, the connecting portion 66A of the upper support portion 6B is located on the front side of the connecting portion 67A of the nozzle 6A, the extending portion 66B of the upper support portion 6B is located on the front side of the extending portion 67B of the nozzle 6A, and the extending portion 66C of the upper support portion 6B is located on the front side of the extending portion 67C of the nozzle 6A. The direction in which the upper support portion 6B extends from the nozzle support portion 60 mimics the direction in which the nozzle 6A extends. Therefore, the upper support portion 6B and the nozzle 6A are aligned in the conveying direction.
As shown in fig. 16, when the nozzle 6A is in the close position, the extended portion 66C of the upper support portion 6B faces the lower pinch roller 3C above the lower pinch roller 3C. As shown in fig. 4, the upper support portion 6B supports the upper sheet 9A from below, and sandwiches the lower sheet 9B with the lower pinch roller 3C.
As shown in fig. 1 and 3, the upper moving mechanism 10C has an upper pinch roller 5A, an upper driving portion 5B, an upper arm 50, and an air cylinder 501. The upper arm 50 extends leftward from the lower end of the arm portion 1C, and continues to extend after being bent obliquely leftward and downward at the left end. The arm portion 1C supports the upper arm 50. As shown in fig. 13 and 17, the upper arm 50 has protrusions 56, 57, 58 on the rear surface 51. The protruding portions 56, 57, 58 protrude rearward. The protruding portion 56 supports a restricting mechanism 7B and a biasing portion 7C (see fig. 17) described later.
As shown in fig. 1 and 3, the upper arm 50 rotatably supports the upper pinch roller 5A at a lower end portion thereof or above the pinch roller 5A. The upper pinch roller 5A rotates about a rotation axis extending in the front-rear direction. The cylinder 501 can swing the lower end portion of the upper arm 50 in the up-down direction by the advance and retreat movement of the lever.
The upper pinch roller 5A is moved up and down by the swing of the upper arm 50. As shown in fig. 4, when the upper pinch roller 5A moves downward in accordance with the downward swing of the upper arm 50, the upper pinch roller 5A approaches the cylindrical portion 32 from above. At this time, the upper pinch roller 5A is located upstream of the nozzle 6A at the close position in the conveying direction and above the extended portion 66C of the upper support portion 6B. The upper pinch roller 5A is opposed to the extension portion 66C in the up-down direction. The position of the upper pinch roller 5A at this time is referred to as an upper pinch position. As shown in fig. 13, when the upper pinch roller 5A is at the upper pinch position, the upper detection position P of the upper detection portion 6E to the upper sheet 9A is located between the upper conveying roller 4A (see fig. 4), the lower conveying roller 3A, and the upper pinch roller 5A in the conveying direction.
As shown in fig. 11, when the upper pinch roller 5A moves upward in accordance with the upward swing of the upper arm 50, the upper pinch roller 5A moves upward away from the cylindrical portion 32. The position of the upper pinch roller 5A at this time is referred to as an upper position.
The upper driving section 5B has an upper motor 50A. The transmission mechanism provided inside the upper arm 50 transmits the driving force of the upper motor 50A to the upper pinch roller 5A. The upper pinch roller 5A rotates in accordance with the driving of the upper motor 50A. The upper pinch roller 5A contacts the upper sheet 9A from the upper side when in the upper pinch position. The upper pinch roller 5A sandwiches the upper sheet 9A between it and the extended setting portion 66C of the upper supporting portion 6B. The upper pinch roller 5A moves the upper sheet 9A in the intersecting direction by rotating.
As shown in fig. 13, the restricting mechanism 7B is provided on the rear surface 51 of the upper arm 50 of the upper moving mechanism 10C. The restricting mechanism 7B moves in accordance with the swing of the upper arm 50. Fig. 17 to 19 show the position of the regulating mechanism 7B (referred to as a regulating position) when the upper arm 50 swings downward. In response to the downward swing of the upper arm 50, the upper pinch roller 5A moves to the upper pinching position, and the restricting mechanism 7B moves to the restricting position. Fig. 20 shows the position of the restricting mechanism 7B (referred to as an unrestricted position) when the upper arm 50 swings upward. In response to the upward swing of the upper arm 50, the upper pinch roller 5A moves to the upper position, and the restricting mechanism 7B moves to the non-restricting position. Next, each configuration will be described on the premise that the restricting mechanism 7B is at the restricting position.
As shown in fig. 17 and 18, the restricting mechanism 7B has a bent plate shape. The restricting mechanism 7B includes a coupling portion 76A, an extending portion 76B, and a restricting portion 76C. The coupling portion 76A is opposed to the rear surface 51 of the upper arm 50. The protruding portion 56 of the upper arm 50 is inserted into a hole provided in the connecting portion 76A. The regulating mechanism 7B is rotatable with respect to the upper arm 50 by rotating the coupling portion 76A around the protruding portion 56. The extension portion 76B extends from the lower end of the coupling portion 76A toward the lower side toward the rear oblique side. The extended setting portion 76B passes on the right side of the upper pinch roller 5A.
The restricting portion 76C extends in the intersecting direction from the lower end of the extension portion 76B toward the left. The restricting portion 76C passes through the rear side of the upper pinch roller 5A. As shown in fig. 13, the restriction portion 76C is located between the upper conveying roller 4A (see fig. 4), the lower conveying roller 3A, and the upper pinch roller 5A in the conveying direction. Specifically, the restriction portion 76C is located between the upper detection position P of the upper sheet 9A by the upper detection portion 6E and the upper pinch roller 5A in the conveying direction. As shown in fig. 19, the right end of the restriction portion 76C is located rightward from the right end of the upper pinch roller 5A. The left end of the restriction portion 76C is located leftward from the left end of the upper pinch roller 5A. That is, both end portions in the intersecting direction of the regulating portion 76C are located outside the upper pinch roller 5A in the intersecting direction.
As shown in fig. 17, the restricting portion 76C has an inclined portion 761 and a horizontal portion 762. The inclined portion 761 is connected to the lower end of the extension portion 76B, and extends obliquely downward toward the rear side. The horizontal portion 762 is connected to a lower end of the inclined portion 761, and extends horizontally toward the rear side. As shown in fig. 18, the horizontal portion 762 is located below the protruding portion 71D of the detection support portion 7A and above the rear end portion of the extension portion 66C of the upper support portion 6B when the nozzle 6A is in the close position. The horizontal portion 762 corresponds to the lower end portion of the regulating portion 76C, and is located above the lower end portion of the upper pinch roller 5A.
As shown in fig. 17, the urging portion 7C is provided on the rear surface 51 of the upper arm 50 of the upper moving mechanism 10C. The urging portion 7C is a torsion spring, and has a spiral portion 78 and end portions 79A and 79B. The protruding portion 56 of the upper arm 50 is inserted into the screw portion 78. The end 79A is engaged with the projection 57 of the upper arm 50. The end 79B is locked to the connecting portion 76A of the restricting mechanism 7B. The urging portion 7C urges the restricting mechanism 7B rotatable about the protruding portion 56 in a counterclockwise direction when viewed from the rear (the state of fig. 19 and 20). The protruding portion 58 of the upper arm 50 contacts the left end portion of the coupling portion 76A of the restricting mechanism 7B, and restricts the rotation of the restricting mechanism 7B. Next, the rotation direction (clockwise or counterclockwise) will be described on the premise of a state seen from the rear (the state of fig. 19 and 20).
Fig. 19 shows the nozzle 6A in the close position with the upper arm 50 swung down. At this time, the restricting mechanism 7B is rotated counterclockwise by the urging force of the urging portion 7C, and is located at the restricting position. The horizontal portion 762 of the regulating portion 76C of the regulating mechanism 7B is positioned closer to the upper sheet 9A supported by the extending portion 66C (see fig. 18) of the upper support portion 6B from above. The horizontal portion 762 of the restricting portion 76C restricts upward movement of the upper sheet 9A. The position of the restricting portion 76C at this time is referred to as a restricting position similarly to the position of the restricting mechanism 7B.
When the upper arm 50 swings from the state of fig. 19 to the upper side, the horizontal portion 762 of the restricting portion 76C abuts against the second portion 72B of the protruding portion 71D of the detection support portion 7A from the lower side. The left end of the horizontal portion 762 moves upward along the second portion 72B of the protruding portion 71D. The restricting mechanism 7B receives force from the protrusion 71D of the detection support 7A and rotates clockwise against the urging force of the urging portion 7C.
Fig. 20 shows the upper arm 50 swung upward from the state of fig. 19. At this time, the restricting mechanism 7B is in the non-restricting position. The horizontal portion 762 of the regulating portion 76C of the regulating mechanism 7B is located right of the protruding portion 71D of the detection support portion 7A. At this time, the restricting portion 76C is spaced upward from the upper sheet 9A supported by the extending portion 66C (see fig. 18) of the upper support portion 6B. The position of the restricting portion 76C at this time is referred to as an unrestricted position as in the position of the restricting mechanism 7B.
The bonding operation (tubular bonding) when the upper sheet 9A and the lower sheet 9B are bonded together by the bonding apparatus 1 to produce the tubular sheet 90 will be described. Before the bonding operation, the nozzle 6A is positioned close to the bonding operation (see fig. 3 and 4). The upper conveying roller 4A is located at an upper contact position, the upper pinch roller 5A is located at an upper position, the lower conveying roller 3A and the nozzle lower roller 3B are located at a lower contact position, and the lower pinch roller 3C is located at a lower position. The restricting mechanism 7B is in the non-restricting position (see fig. 20). The lower sheet presser feet 6C, 6D are in a state in which the pressing portions 64, 69 are moved upward. The heater starts heating and heats the adhesive.
When the operator inputs an operation instruction to the setting unit 12, the bonding apparatus 1 swings the support arm 40 upward by the cylinder of the upper conveying mechanism 10B, and swings the rear end portion of the tubular portion 32 downward by the lower gap motor 30A. The upper conveying roller 4A moves to the upper exit position, and the lower conveying roller 3A and the nozzle lower roller 3B move to the lower exit position. The operator places the lower sheet 9B on the upper surface of the cylindrical portion 32. The lower conveying roller 3A and the nozzle lower roller 3B are in contact with the lower sheet 9B from the lower side.
When the operator inputs an operation instruction to the setting unit 12, the bonding apparatus 1 swings the arm 37B with the cylinder 30D, and the lower grip roller 3C moves from the lower position to the lower grip position. The lower pinch roller 3C sandwiches the lower sheet 9B between it and the extended setting portion 66C of the upper supporting portion 6B. The bonding apparatus 1 rotates the lower pinch roller 3C by driving the lower motor 30C. The output shaft of the lower motor 30C controls the rotation direction in accordance with the detection result of the lower detection portion, and controls the position of the lower sheet 9B in the intersecting direction. When the operator inputs an operation instruction to the setting unit 12, the bonding apparatus 1 swings the rear end portion of the tubular portion 32 upward by the lower gap motor 30A, and the lower conveying roller 3A and the nozzle lower roller 3B move from the lower separated position to the lower contact position. The bonding device 1 moves the pressing portion 64 of the lower sheet presser foot 6C and the pressing portion 69 of the lower sheet presser foot 6D downward. The lower sheet presser feet 6C, 6D press the lower sheet 9B placed on the cylindrical portion 32 between them and the cylindrical portion 32.
The operator places the upper sheet 9A on the upper surface of the extension portion 66C of the upper support portion 6B. When the operator inputs an operation instruction to the setting section 12, the bonding apparatus 1 swings the upper arm 50 downward by the air cylinder 501, and the upper grip roller 5A moves from the upper position to the upper grip position. The upper pinch roller 5A sandwiches the upper sheet 9A between it and the extended portion 66C of the upper support portion 6B (see fig. 4). At this time, the restricting mechanism 7B moves from the non-restricting position to the restricting position with the swing of the upper arm 50 (see fig. 19). The bonding apparatus 1 rotates the upper pinch roller 5A by driving the upper motor 50A. The output shaft of the upper motor 50A controls the rotation direction in accordance with the detection result of the upper detection portion 6E, and controls the position of the upper sheet 9A in the intersecting direction. When the operator inputs an operation instruction to the setting unit 12, the bonding apparatus 1 swings the support arm 40 downward by the cylinder of the upper conveying mechanism 10B, and moves the upper conveying roller 4A from the upper separated position to the upper contact position. At this time, the upper conveying roller 4A sandwiches the upper sheet 9A and the lower sheet 9B between them and the lower conveying roller 3A (refer to fig. 4).
When the operator inputs an operation instruction to start the bonding operation to the setting unit 12, the bonding device 1 moves the pressing portion 64 of the lower sheet presser foot 6C and the pressing portion 69 of the lower sheet presser foot 6D upward, and releases the pressing of the lower sheet 9B by the lower sheet presser feet 6C, 6D. The adhesive device 1 starts the discharge of the adhesive from the nozzle 6A by driving the pump motor 114. The adhesive is discharged between the upper sheet 9A and the lower sheet 9B, and adheres to the lower sheet 9B. The bonding apparatus 1 starts rotation of the upper conveying roller 4A, the lower conveying roller 3A, and the nozzle lower roller 3B by driving the upper conveying motor 41 and the lower conveying motor 30B. The upper conveying roller 4A and the lower conveying roller 3A cooperate to convey the upper sheet 9A and the lower sheet 9B to the rear side. The nozzle lower roller 3B auxiliarily conveys the lower sheet 9B to the rear side. The bonding apparatus 1 presses the upper sheet 9A and the lower sheet 9B together with the upper conveying roller 4A and the lower conveying roller 3A, and bonds them with an adhesive.
The bonding apparatus 1 detects whether or not the upper sheet end 90A (see fig. 5) of the upper sheet 9A is at the upper detection position P (see fig. 13) by the upper detection portion 6E. When the bonding device 1 detects that the upper sheet 9A is at the upper detection position P, the upper pinch roller 5A is rotated so as to move the upper sheet 9A to the right. When detecting that the upper sheet 9A is not at the upper detection position P, the bonding device 1 rotates the upper pinch roller 5A so as to move the upper sheet 9A to the left. The bonding apparatus 1 detects whether or not the lower sheet end 90B (see fig. 5) of the lower sheet 9B is at the lower detection position by the lower detection portion. When detecting that the lower sheet 9B is at the lower detection position, the bonding device 1 rotates the lower pinch roller 3C so as to move the lower sheet 9B to the left. When detecting that the lower sheet 9B is not at the lower detection position, the bonding device 1 rotates the lower pinch roller 3C so as to move the lower sheet 9B to the right. At this time, the upper sheet 9A and the lower sheet 9B can adhere an adhesive to the upper sheet end portion 90A and the lower sheet end portion 90B and adhere the upper sheet end portion 90A and the lower sheet end portion 90B to each other.
When the operator inputs an instruction to finish the bonding operation to the setting unit 12, the bonding apparatus 1 stops the rotation of the upper conveying roller 4A, the lower conveying roller 3A, the nozzle lower roller 3B, the upper pinch roller 5A, and the lower pinch roller 3C, and stops the discharge of the adhesive from the nozzle 6A. The bonding apparatus 1 swings the support arm 40 upward by the cylinder of the upper conveying mechanism 10B, swings the upper arm 50 upward by the cylinder 501, and swings the arm 37B by the cylinder 30D. The upper conveying roller 4A moves to the upper leaving position, the upper pinch roller 5A moves to the upper position, and the lower pinch roller 3C moves to the lower position. At this time, the restricting mechanism 7B moves from the restricting position to the non-restricting position with the swing of the upper arm 50 (see fig. 20). The operator takes out the cylindrical sheet 90 from the bonding apparatus 1.
The upper detecting portion 6E detects whether the upper sheet 9A is at an upper detection position P between the upper conveying roller 4A, the lower conveying roller 3A, and the upper pinch roller 5A in the conveying direction. The regulating portion 76C at the regulating position is located between the upper conveying roller 4A, the lower conveying roller 3A, and the upper pinch roller 5A in the conveying direction. The restricting portion 76C restricts upward movement of the upper sheet 9A at this position. At this time, the bonding apparatus 1 can suppress curling of the upper sheet 9A at a position closer to the upper detection position P by the restricting portion 76C. Accordingly, the bonding apparatus 1 can appropriately detect the accurate position of the upper sheet end portion 90A of the upper sheet 9A by the upper detection portion 6E. Therefore, the bonding apparatus 1 can suppress the upper pinch roller 5A from moving the upper sheet 9A in the wrong direction in the intersecting direction.
The restricting portion 76C is located between the upper detection position P and the upper pinch roller 5A in the conveying direction. At this time, the bonding apparatus 1 can suppress curling of the upper sheet 9A at a position closer to the upper detection position P by the restricting portion 76C. Accordingly, the bonding apparatus 1 can more accurately detect the upper sheet end portion 90A of the upper sheet 9A by the upper detection portion 6E.
The bonding apparatus 1 has an upper arm 50, and the upper arm 50 rotatably supports the upper pinch roller 5A with respect to the upper pinch roller 5A, and the upper arm 50 is swingable in the up-down direction. The restricting portion 76C is provided on the upper arm 50. In this case, the adhesive device 1 can be made smaller than when the restricting portion 76C is held by another mechanism. In the bonding apparatus 1, the restricting portion 76C is provided on the upper arm 50 supporting the upper pinch roller 5A, so that the restricting portion 76C can be disposed closer to the upper pinch roller 5A. Therefore, the bonding apparatus 1 can effectively suppress curling of the upper sheet 9A due to the rotation of the upper pinch roller 5A.
The adhesive device 1 swings the upper arm 50 upward when the positioning control of the upper pinch roller 5A on the upper sheet 9A is not performed. The restricting portion 76C is located at the restricting position when the upper arm 50 swings downward, and is located at the non-restricting position when the upper arm 50 swings upward. The bonding device 1 can reduce the possibility that the restriction portion 76C will interfere with the bonding operation when the positioning control of the upper pinch roller 5A on the upper sheet 9A is not performed. For example, the restriction portion 76C can be prevented from interfering with the assembly when the operator assembles the upper sheet 9A and the lower sheet 9B to the bonding apparatus 1, and good work efficiency of the operator can be maintained.
The restricting mechanism 7B including the restricting portion 76C is rotatably provided to the upper arm 50. When the upper arm 50 swings downward, the restricting mechanism 7B rotates by the urging force of the urging portion 7C, and the restricting portion 76C is located at the restricting position. When the upper arm 50 swings upward, the restricting portion 76C abuts against the projection portion 71D of the detection support portion 7A that supports the upper detection portion 6E, and rotates against the urging force of the urging portion 7C, thereby moving to the non-restricting position. The bonding apparatus 1 does not require a driving source for moving the restricting portion 76C to the restricting position and the non-restricting position. Therefore, the bonding apparatus 1 can simplify the structure of the restricting portion 76C.
The restriction portion 76C has an inclined portion 761 inclined downward from the upstream side toward the downstream side in the conveying direction. The bonding device 1 can smoothly pass the upper sheet 9A through the restricting portion 76C to perform the bonding operation.
The lower end portion of the regulating portion 76C is located above the lower end portion of the upper pinch roller 5A in the up-down direction. The bonding device 1 can appropriately bring the upper pinch roller 5A into contact with the upper sheet 9A without being disturbed by the restricting portion 76C. Therefore, the bonding device 1 can reliably move the upper sheet 9A in the intersecting direction by the upper pinch roller 5A. The bonding device 1 can reduce the possibility of damage to the upper sheet 9A by the restricting portion 76C at the time of conveyance of the upper sheet 9A.
Both end portions of the restriction portion 76C in the intersecting direction are located outside the upper pinch roller 5A in the intersecting direction. The bonding device 1 can suppress curling of the upper sheet 9A due to rotation of the upper pinch roller 5A by the restricting portion 76C. Accordingly, the bonding apparatus 1 can accurately detect the upper sheet end portion 90A of the upper sheet 9A.
The bonding device 1 can suppress the upper sheet 9A from approaching the upper detection portion 6E in accordance with the case where the upper sheet 9A curls. At this time, the detection accuracy of the upper sheet 9A by the upper detection portion 6E can be maintained. Accordingly, the bonding apparatus 1 can appropriately perform conveyance control of the upper sheet 9A by the upper pinch roller 5A.
The cover 35 is detachable from the cylindrical portion 32, and is assembled by the magnetic force of a magnet to close the opening 35A. After the cover 35 is detached from the cylindrical portion 32, the lower conveying roller 3A and the nozzle lower roller 3B are exposed from the opening 35A. Accordingly, the adhesive device 1 can easily detach the cover 35 from the tubular portion 32, and perform maintenance of the inside of the distal end of the tubular portion 32.
The rear end 351 of the cover 35 protrudes rearward of the rear end of the lower conveying roller 3A (see fig. 18). Accordingly, the bonding apparatus 1 can suppress the upper sheet 9A and the lower sheet 9B from being wound around the lower conveying roller 3A during conveyance by the end 351 of the cover 35. The operator can easily perform an operation of removing the cover 35 from the cylindrical portion 32 by hooking the end portion 351 with a finger and lifting it upward.
The present invention is not limited to the above embodiments. The restricting portion 76C at the restricting position may be located between the upper conveying roller 4A, the lower conveying roller 3A, and the upper detecting position P in the conveying direction. The restricting portion 76C at the restricting position may be at the same position as the upper detecting position P in the conveying direction. In this case, the restricting portion 76C may have a light transmitting portion that allows light emitted from the light emitting portion of the upper detecting portion 6E and light reflected by the reflecting plate to transmit therethrough. The light transmitting portion may be realized by a transparent member, a hole, or the like.
The restricting mechanism 7B including the restricting portion 76C may be provided to a member other than the upper arm 50. The regulating mechanism 7B may be provided in the nozzle support portion 60. The regulating mechanism 7B may be provided in the cylindrical portion 32 and manually moved from the non-regulating position to the regulating position by an operator. The restricting mechanism 7B may be provided in the nose portion 1D and may have a switching portion (such as a cylinder) for switching between the non-restricting position and the restricting position.
The projection 71D that the restricting portion 76C contacts when the upper arm 50 moves up and down may be provided in a member other than the detection support portion 7A. The protruding portion 71D may be provided on the nose portion 1D. The restricting mechanism 7B may be moved to the restricting position and the non-restricting position by rotating with a motor or the like. The restricting portion 76C may be rotated by a link mechanism driven in response to the up-and-down movement of the upper arm 50, and may be moved between the restricting position and the non-restricting position.
The regulating portion 76C of the regulating mechanism 7B may not have the inclined portion 761, and may be constituted only by the horizontal portion 762. The restricting portion 76C is not limited to a plate shape, and may be cylindrical. The restricting portion 76C may be a rotatable roller. The lower end portion of the restriction portion 76C may be located at the same height as the lower end portion of the upper pinch roller 5A in the up-down direction or below the lower end portion of the upper pinch roller 5A.
The left end portion of the regulating portion 76C may be positioned to the left of the left end of the upper pinch roller 5A, and the right end portion may be positioned to the left of the right end of the upper pinch roller 5A. The right end portion of the regulating portion 76C may be located rightward from the right end of the upper pinch roller 5A, and the left end portion may be located rightward from the left end of the upper pinch roller 5A.
The lower conveying roller 3A is an example of the lower conveying section of the present invention. The upper conveying roller 4A is an example of an upper conveying portion of the present invention. The lower conveying roller 3A and the upper conveying roller 4A are examples of the conveying mechanism of the present invention. The upper pinch roller 5A is an example of the upper roller of the present invention.

Claims (7)

1. An adhesive device (1) for bonding an upper sheet and a lower sheet together with an adhesive, characterized in that,
the bonding device comprises:
a conveying mechanism, the conveying mechanism comprising: a lower conveying section (3A) that supports the lower sheet from below; and an upper conveying portion (4A) that is in contact with the upper sheet from the upper side and sandwiches the upper sheet and the lower sheet between the upper conveying portion and the lower conveying portion, the conveying mechanism conveying the lower sheet and the upper sheet in a predetermined conveying direction by the lower conveying portion and the upper conveying portion;
A nozzle (6A) for discharging the adhesive between the upper sheet and the lower sheet;
an upper support portion (6B) provided on the upstream side of the nozzle in the conveying direction and supporting the upper sheet from below;
an upper roller (5A) provided on the upstream side of the nozzle in the conveying direction, for sandwiching the upper sheet between the upper roller and the upper support portion, and for moving the upper sheet in a crossing direction crossing the conveying direction and the up-down direction;
an upper detection portion (6E) that detects whether the upper sheet is at an upper detection position between the conveying mechanism and the upper roller in the conveying direction; a kind of electronic device with high-pressure air-conditioning system
A restriction portion (76C) located between the upper detection position and the upper roller in the conveying direction, for restricting upward movement of the upper sheet,
the upper detecting portion detects whether the upper sheet restricted by the restricting portion is at the upper detecting position,
the upper roller is driven based on the detection result of the upper detection portion to move the upper sheet in the intersecting direction.
2. The bonding apparatus according to claim 1, wherein,
the bonding device is provided with an upper arm (50) which supports the upper roller in a rotatable manner and can swing in the up-down direction,
The limiting part is arranged on the upper arm.
3. An adhesive device according to claim 2, wherein,
the bonding device is provided with a detection supporting part (7A) for supporting the upper detection part,
when the upper arm swings downward, the restricting portion is located at a restricting position near the upper sheet from above,
when the upper arm swings upward, the restricting portion is located at an unrestricted position which is a position away from the upper sheet and on the side of the detection support portion in the intersecting direction.
4. A bonding apparatus according to claim 3, wherein,
the restriction portion is rotatably provided to the upper arm,
the upper arm has a biasing portion (7C) for biasing the restricting portion to one side in the rotation direction,
the detection support part is provided with a protrusion part (71D),
when the upper arm swings downward, the restricting portion rotates to the rotation direction side by the urging force of the urging portion, so as to be located at the restricting position,
when the upper arm swings upward, the restricting portion abuts against the protruding portion and rotates to the other side in the rotation direction against the urging force of the urging portion, thereby moving to the non-restricting position.
5. Bonding device according to claim 1 or 2, characterized in that,
the restriction portion has an inclined portion (761) inclined downward from an upstream side toward a downstream side in the conveying direction.
6. Bonding device according to claim 1 or 2, characterized in that,
the lower end portion of the restriction portion is located above the lower end portion of the upper roller in the up-down direction.
7. Bonding device according to claim 1 or 2, characterized in that,
the restriction portion extends in the intersecting direction,
at least one of the intersecting direction both end portions of the regulating portion is located outside the upper roller in the intersecting direction.
CN202110017218.8A 2020-01-09 2021-01-07 Bonding device Active CN113170937B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-002417 2020-01-09
JP2020002417A JP2021110059A (en) 2020-01-09 2020-01-09 Bonding device

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CN113170937B true CN113170937B (en) 2023-12-01

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