JP2020165017A - Bonding device - Google Patents

Abstract

To provide a bonding device capable of shortening a heating time of an adhesive at the time of starting, while suppressing defective coating of the adhesive.SOLUTION: A bonding device comprises a nozzle, a heater, and a temperature sensor. The nozzle discharges an adhesive on a lower sheet. The heater is disposed in a channel for supplying the adhesive to the nozzle. The temperature sensor detects a temperature of the heater. At the time of starting the bonding device, a CPU of the bonding device controls the heater so that the detected temperature which is a temperature detected by the temperature sensor, becomes the start-up temperature (S17). The start-up temperature is a temperature higher than a predetermined temperature which is a temperature suitable for discharging the adhesive on the lower sheet. After completion of the control of the heater, the CPU controls the heater so that the detected temperature becomes the predetermined temperature.SELECTED DRAWING: Figure 13

Description

The present invention relates to an adhesive device.

The bonding device executes the bonding operation by sandwiching the lower cloth and the upper cloth with the adhesive discharged from the nozzle in between. The adhesive device disclosed in Patent Document 1 executes a temperature control process. In the temperature control process, when the detection temperature of any of the storage room temperature sensor, pump temperature sensor, and support temperature sensor is equal to or higher than the predetermined temperature, the adhesive device determines that the adhesive has melted and is in a liquid state. To do. At this time, the adhesive device turns the heater of the portion including the detected temperature sensor from on to off. The bonding device maintains the temperature of the adhesive in a liquid state at a predetermined temperature or higher by executing a temperature control process at a predetermined cycle when the bonding operation is executed.

JP-A-2010-180486

In the above-mentioned adhesive device, it is necessary to heat the adhesive to a predetermined temperature to liquefy it at the time of starting, so that the longer it takes to liquefy the adhesive, the slower the start time of the adhesive operation, and the efficiency of the adhesive operation decreases. On the other hand, when the adhesive used in the adhesive device is a reactive hot melt, the viscosity of the adhesive increases as the heating time by the heater increases, and the rate of increase increases as the temperature of the adhesive increases. Therefore, if the adhesive device raises the temperature of the adhesive above a predetermined temperature when heated by a heater in order to accelerate the liquefaction time of the adhesive, the viscosity of the adhesive increases too much and the adhesive cannot be properly applied to the lower cloth. Poor application may occur.

An object of the present invention is to provide an adhesive device capable of shortening the heating time of the adhesive at the time of starting while suppressing poor application of the adhesive.

The adhesive device according to one aspect of the present invention includes a nozzle for discharging an adhesive to a sheet, a heater provided in a supply path for supplying the adhesive to the nozzle, a temperature sensor for detecting the temperature of the heater, and the above. In an adhesive device including a heating control unit that controls the heater so that the detection temperature of the temperature sensor becomes a predetermined temperature which is the temperature of the adhesive suitable for the nozzle to discharge the adhesive to the sheet. At startup, the heater is provided with a high-temperature heating control unit that controls the heater so that the temperature detected by the temperature sensor becomes the temperature detected by the temperature sensor at the startup temperature, which is higher than the predetermined temperature. The heating control unit comprises the high-temperature heating. After the control of the heater is completed by the control unit, the heater is controlled so that the temperature detected by the temperature sensor becomes the predetermined temperature.

According to the above configuration, the high temperature heating control unit sets the temperature of the heater to a start-up temperature higher than a predetermined temperature, so that the adhesive liquefaction time at the start-up time is accelerated. After the heater is controlled by the high temperature heating control unit, the heating control unit controls the heater instead of the high temperature heating control unit, and the temperature of the heater drops to a predetermined temperature, so that an excessive increase in the viscosity of the adhesive is unlikely to occur. Therefore, the adhesive device can shorten the heating time of the adhesive at the time of starting while suppressing the poor application of the adhesive.

The adhesive device includes a measurement control unit that measures the time during which the heater is controlled by the high temperature heating control unit, and the high temperature heating control unit uses the measurement control unit until the measurement time by the measurement control unit elapses. The heater may be controlled. In the adhesive device, after the measurement time by the measurement control unit elapses for a predetermined time, the heating control unit controls the heater instead of the high temperature heating control unit. Therefore, the adhesive device can be controlled to ensure that the adhesive is liquefied at startup.

The adhesive device determines whether or not the detection temperature of the temperature sensor has dropped to a predetermined range including the predetermined temperature when the heater is controlled by the heating control unit after the control of the heater by the high temperature heating control unit is completed. When the temperature determination unit determines that the temperature detected by the temperature sensor has dropped to the predetermined range, the storage device stores appropriate temperature information indicating that the detection temperature of the temperature sensor falls within the predetermined range. The temperature storage unit that stores in the temperature sensor, the abnormality determination unit that determines whether or not the detection temperature of the temperature sensor falls within the predetermined range, and the abnormality determination unit that determines whether or not the detection temperature of the temperature sensor falls within the predetermined range. It may be provided with a notification unit that notifies the occurrence of an abnormality when the storage device determines and stores the temperature appropriate information. Even if the temperature detected by the temperature sensor deviates from the predetermined range due to the control of the heater by the high temperature heating control unit, the notification unit does not notify the occurrence of an abnormality. Since the adhesive device does not erroneously notify the occurrence of an abnormality, usability can be improved.

The adhesive device includes a cartridge mounting portion on which a cartridge containing the adhesive can be mounted, and at the time of activation, when the power of the adhesive device is turned on and when the cartridge mounted on the cartridge mounting portion is replaced. May include. Since the adhesive device can accelerate the liquefaction time of the adhesive when the power is turned on and when the cartridge is replaced, the adhesive operation can be made more efficient.

The adhesive device includes a storage control unit that stores dischargeable information indicating that the nozzle can discharge the adhesive in the storage device at the end of control of the heater by the high temperature heating control unit, and at the time of activation. In the above, when the detection temperature of the temperature sensor is lower than the predetermined temperature, is equal to or higher than the determination temperature higher than the melting temperature of the adhesive, and the storage device stores the dischargeable information. The heating control unit may control the heater instead of the high temperature heating control unit. When the adhesive is liquefied at startup, the high temperature control unit does not control the heater. Therefore, the adhesive device can prevent the viscosity of the adhesive from increasing excessively.

The adhesive device includes a temperature receiving unit that receives the setting of the starting temperature and the predetermined temperature, and the high temperature heating control unit has the temperature detected by the temperature sensor at the starting temperature received by the temperature receiving unit. The heater may be controlled so as to be such that the heater may be controlled so that the temperature detected by the temperature sensor becomes the predetermined temperature received by the temperature receiving unit. Since the operator can freely set the start-up temperature and the predetermined temperature according to the adhesive, the lower sheet, and the upper sheet, the usability of the adhesive device is improved.

The adhesive device includes a time reception unit that accepts the setting of the predetermined time, and the high temperature heating control unit waits until the measurement time by the measurement control unit elapses the predetermined time received by the time reception unit. The heater may be controlled. Since the operator can set a predetermined time according to the type of the adhesive, the lower sheet, and the upper sheet, the usability of the adhesive device is improved.

The perspective view of the adhesive device 1. The left side view of the adhesive device 1. The perspective view of the lower transport mechanism 50. An enlarged left side view (partial sectional view) of the nozzle 11, the lower transfer roller 64, and the upper transfer roller 12. The perspective view of the lower transport drive part 60, the lower holding mechanism 80, and the clearance adjustment part 77. An enlarged perspective view of the lower transfer roller 64 and the nozzle lower roller 65. Front view of the adhesive device 1. The perspective view of the lower holding mechanism 80 and the moving mechanism 81. The perspective view of the holding mechanism 800. Right side view of the tread plate 7. The electric block diagram of the adhesive device 1. Flow diagram of setting process. The flow chart of the heater temperature control process. The flow chart of the heater temperature control process following FIG. The graph which shows the temperature change of a heater 131 and an adhesive Z. Flow diagram of main processing. Flow diagram of bonding process. The flow chart of the bonding process following FIG. The left side view (partial sectional view) of the holding mechanism 800 which was switched to the holding state when the bonding operation was stopped. The left side view of the lower sheet 8 extending in the front-rear direction after the holding mechanism 800 is switched to the holding state. The left side view of the holding mechanism 800 which switches to the released state when the bonding operation is restarted. Flow chart of lower edge control processing. Flow chart of upper edge control processing.

An adhesive device 1 which is an embodiment of the present invention will be described. In the following description, the left and right, front and back, and top and bottom indicated by arrows in the figure are used. The adhesive device 1 adheres the upper sheet 6 (see FIG. 3) and the lower sheet 8 (see FIG. 3) with the adhesive Z (see FIG. 19). The lower sheet 8 and the upper sheet 6 are sheet-like adhesive objects, for example, a flexible cloth. The upper sheet 6 overlaps the lower sheet 8 from above. The adhesive device 1 adheres the lower specific end portion 8A, which is the right end portion of the lower sheet 8, and the upper specific end portion 6A, which is the left end portion of the upper sheet 6, via the adhesive Z. The adhesive device 1 conveys the upper sheet 6 and the lower sheet 8 in the rear direction.

As shown in FIGS. 1 and 2, the adhesive device 1 includes a pedestal portion 2, a pedestal portion 3, an arm portion 4, a head portion 5, and a transport mechanism 20. The pedestal portion 2 has a rectangular parallelepiped shape and is fixed to the workbench. The left surface of the pedestal portion 2 is a fixed surface, and the fixed surface fixes the support plate 51. The pedestal portion 3 is columnar and extends upward from the upper surface of the pedestal portion 2. The arm portion 4 extends to the left from the upper end portion of the pedestal portion 3. The arm portion 4 includes an operation portion 19 at the front portion. The head 5 projects to the left from the left end of the arm 4. The transport mechanism 20 includes a lower transport mechanism 50 and an upper transport mechanism 70. The lower transport mechanism 50 is provided on the support plate 51, and the upper transport mechanism 70 is provided on the head 5.

As shown in FIG. 3, the lower transport mechanism 50 is a so-called "cylindrical type" having an elongated tubular rear portion extending in the front-rear direction. For example, when creating a T-shirt, an operator attaches the sheet 200 to the lower transport mechanism 50 in a tubular shape with one end side of the sheet 200 as the upper sheet 6 and the other end side as the lower sheet 8. Since the rear portion of the lower transport mechanism 50 has an elongated tubular shape, the operator can handle the sheet 200 at the rear portion of the lower transport mechanism 50.

As shown in FIGS. 3 and 4, the lower transfer mechanism 50 includes a frame 55, a lower transfer drive unit 60, and the like. The frame 55 has a box shape that extends in the front-rear direction and the left-right direction and opens upward. The frame 55 accommodates the lower transport drive unit 60. The upper end opening of the frame 55 is closed by a support plate 57 extending in the horizontal direction. The support plate 57 supports the lower sheet 8 and the upper sheet 6. The rear end of the frame 55 is an opening 553 that opens rearward, and extends from the upper front to the lower rear. The rear end of the lower transport drive unit 60 projects rearward from the opening 553.

The right portion of the rear end of the support plate 57 is provided with a fixed shaft portion 316 projecting upward. The fixed shaft portion 316 supports the rotation support portion 314. The rotation support portion 314 is a plate member having a substantially rectangular shape in a plan view. The rotation support portion 314 can rotate about the fixed shaft portion 316 between the operating position (see FIG. 3) and the retracted position. The rotation support portion 314 in the operating position is located directly below the upper holding roller 32 described later and directly above the lower holding roller 76 described later (see FIG. 4). The retracted position is a rotation position rotated by approximately 90 ° counterclockwise in a plan view from the operating position. The upper surface 315 of the rotation support portion 314 is provided with an upper reflector, and the lower surface 317 of the rotation support portion 314 is provided with a lower reflector.

As shown in FIGS. 5 and 6, the lower transfer drive unit 60 includes a support frame 61, a lower transfer motor 63, a lower transfer roller 64, a nozzle lower roller 65, a transfer belt 67 (see FIG. 9), and the like. The support frame 61 extends in the front-rear direction. The cross section of the support frame 61 viewed along the front-rear direction is a substantially U-shape that opens upward. The nozzle plate 59 and the tip plate 56 are fixed to the upper part of the rear end of the support frame 61. The nozzle plate 59 extends in the front-rear direction, and the tip plate 56 extends rearward and downward from the rear end of the nozzle plate 59. The nozzle plate 59 includes an opening 591 that opens in the vertical direction. The opening 591 is located directly below the rotation support portion 314 when it is in the operating position. A roller opening 592 is provided at the connecting portion between the nozzle plate 59 and the tip plate 56. The roller opening 592 penetrates each of the nozzle plate 59 and the tip plate 56 in the thickness direction.

The lower transfer motor 63 is fixed to the front right surface of the support frame 61. The drive shaft of the lower transfer motor 63 projects from the right side of the support frame 61 to the left and enters the inside of the support frame 61. The lower transfer roller 64 is fixed to a rotating shaft 641 rotatably supported at the rear end of the support frame 61. The lower transfer roller 64 projects outward from the roller opening 592. The lower transfer roller 64 supports the lower sheet 8 and the upper sheet 6 which are overlapped with the adhesive Z in between. The roller under the nozzle 65 is fixed to the rotating shaft 651 rotatably supported by the support frame 61 in front of the rotating shaft 641. The roller under the nozzle 65 projects upward from the opening 591. The transport belt 67 bridges the drive shaft and the rotary shafts 641 and 651 of the lower transport motor 63 inside the support frame 61. The transfer belt 67 transmits the driving force of the lower transfer motor 63 to the lower transfer roller 64 and the nozzle lower roller 65. Therefore, when the lower transfer motor 63 is driven, the lower transfer roller 64 and the nozzle lower roller 65 rotate with the left-right direction as the axial direction.

The gap adjusting unit 77 will be described with reference to FIG. The gap adjusting unit 77 includes a gap adjusting motor 68, a cam plate 69, a swing shaft 62, and a spring. The clearance adjusting motor 68 is provided above the fixing plate 512 (see FIG. 1) extending to the left from the lower end of the support plate 51 and below the lower transport motor 63. The drive shaft 681 of the clearance adjusting motor 68 projects to the left. A cam plate 69 having a substantially circular shape is fixed to the tip of the drive shaft 681 when viewed from the left side. The cam plate 69 is arranged inside the cam hole 631 provided in the lower right portion of the support frame 61, and the center of the cam plate 69 is eccentric from the drive shaft 681 of the clearance adjusting motor 68.

The swing shaft 62 extends in the left-right direction and is fixed by a frame 55 (see FIG. 3). The swing shaft 62 rotatably supports a substantially central portion of the support frame 61 in the front-rear direction. The spring urges the support frame 61 in a direction in which the rear end portion of the support frame 61 swings downward. Therefore, the cam plate 69 comes into contact with the lower end of the cam hole 631. When the cam plate 69 is rotated by driving the clearance adjusting motor 68, the support frame 61 swings around the swing shaft 62 according to the rotation angle of the cam plate 69. The gap adjusting motor 68 moves up and down the rear end of the support frame 61 (arrow Q) to open a gap between the nozzle 11 discharge port 13 (see FIG. 7) and the nozzle plate 59 (hereinafter referred to as a nozzle gap). change. The lower transfer roller 64 and the lower nozzle roller 65 swing in the vertical direction as the nozzle gap is changed. In FIG. 4, the lower transfer roller 64 and the nozzle lower roller 65 when the rear end of the support frame 61 is above are shown by solid lines, and the lower transfer roller 64 and the nozzle lower when the rear end of the support frame 61 is below are shown by solid lines. The roller 65 is illustrated by a chain double-dashed line.

The lower holding mechanism 80 will be described with reference to FIGS. 5 and 8. The lower holding mechanism 80 is housed in the frame 55 (see FIG. 3). The lower sandwiching mechanism 80 can change the position of the lower sheet 8 in the left-right direction while sandwiching the lower sheet 8 with the lower surface 317 (see FIG. 4) of the rotation support portion 314. The lower holding mechanism 80 includes a fixed base portion 71, a lower holding motor 72, a connecting shaft 910, a support frame portion 73, a belt 74, a shaft portion 75, a lower holding roller 76, a moving mechanism 81, and the like.

The fixing base portion 71 has a substantially rectangular parallelepiped shape and is fixed to the inner portion of the frame 55 (see FIG. 3). The fixed base portion 71 has a circular through hole 711 penetrating in the front-rear direction, and holds the rotating portion 717 rotatably inside the through hole 711. The center of rotation of the rotating portion 717 is an axis J extending in the front-rear direction.

The lower holding motor 72 is fixed to the front surface of the rotating portion 717. The lower holding motor 72 rotates integrally with the rotating portion 717 with respect to the fixed base portion 71. The fixed base portion 71 rotatably supports the lower holding motor 72 together with the rotating portion 717. The lower pinch motor 72 is provided with a pin 940 at the rear of the upper surface. Pin 940 projects upward. The lower holding motor 72 fixes one end of the spring 946 to the rear part of the left surface. The spring 946 extends downward and the other ends are fixed to the inner portion of the frame 55.

The drive shaft of the lower sandwiching motor 72 is inserted into a through hole provided in the center of the rotating portion 717 and connected to the connecting shaft 910. The connecting shaft 910 projects rearward from the rear surface of the rotating portion 717. The support frame portion 73 is arranged behind the fixing base portion 71 and fixed to the rear surface of the rotating portion 717. Therefore, the support frame portion 73 rotates integrally with the rotating portion 717. The spring 946 constantly urges the lower holding motor 72 in the counterclockwise direction when viewed from the front. The support frame portion 73 accommodates the rear end portion of the connecting shaft 910 inside. The support frame portion 73 rotatably supports the rear end portion of the shaft portion 75. The belt 74 is hung on the connecting shaft 910 and the shaft portion 75. The shaft portion 75 is arranged inside the support frame 61, and extends in the front-rear direction at a position shifted to the upper right with respect to the axis J.

The lower holding roller 76 is fixed to the rear end portion of the shaft portion 75, and can rotate together with the shaft portion 75 in the front-rear direction as an axial direction. The lower holding roller 76 is arranged below the upper holding roller 32. When the lower pinch motor 72 is driven, the shaft portion 75 rotates via the drive shaft, the connecting shaft 910, and the belt 74 of the lower pinch motor 72. Therefore, the lower holding roller 76 rotates around the shaft portion 75 together with the shaft portion 75.

The moving mechanism 81 includes a plate portion 930, an air cylinder 931 and a plate member 933. The plate portion 930 is provided on the upper surface of the fixed base portion 71 and extends in the left-right direction. The air cylinder 931 is provided on the left front portion of the plate portion 930. The output shaft 932 of the air cylinder 931 extends to the right. The plate member 933 is an L-shaped member in front view, and is fixed to the right end portion of the output shaft 932. The right end of the plate member 933 comes into contact with the pin 940 of the lower holding motor 72.

When the output shaft 932 moves to the right, the plate member 933 moves the pin 940 to the right. As the pin 940 moves, the lower pinching motor 72 swings clockwise with the support frame portion 73 around the axis J against the urging force of the spring 946. At this time, the shaft portion 75 moves downward, and the lower holding roller 76 swings around the axis J to the lower separation position. The lower separation position is the swing position of the lower holding roller 76 in which the upper end of the lower holding roller 76 is separated downward from the lower surface 317 of the rotation support portion 314. In FIG. 4, the lower holding roller 76 at the lower separated position is illustrated by the alternate long and short dash line.

When the air cylinder 931 is driven and the output shaft 932 moves to the left and separates from the pin 940, the lower holding motor 72 receives the urging force of the spring 946 to support the support frame portion in the counterclockwise direction in the front view around the axis J. It swings with 73. At this time, the lower holding roller 76 swings around the axis J to the lower holding position. The lower holding position is the swinging position of the lower holding roller 76 that sandwiches the lower sheet 8 with the lower surface 317 of the rotation support portion 314. In FIG. 4, the lower holding roller 76 in the lower holding position is illustrated by a solid line.

The lower detection unit 78 will be described with reference to FIG. The lower detection unit 78 is fixed at a predetermined position on the support frame 61, and is located below the opening 591 (see FIG. 6) of the nozzle plate 59. The lower detection unit 78 is an optical detector in which a lower light emitting unit and a lower light receiving unit are integrated. The lower light emitting part and the lower light receiving part are at the same height position as each other. The lower light emitting portion emits light toward the opening 591 of the nozzle plate 59. The light that has passed through the opening 591 is reflected downward by the lower reflector when the rotation support portion 314 is in the operating position. The reflected light reflected by the lower reflector passes through the opening 591. The lower light receiving portion can receive light that has passed through the opening 591.

For example, when the lower specific end 8A of the lower sheet 8 is above the opening 591 of the nozzle plate 59, the lower specific end 8A blocks the light emitted by the lower light emitting portion. Therefore, the lower light receiving unit does not receive the light emitted by the lower light emitting unit. When the lower specific end portion 8A is not above the opening 591, the light emitted by the lower light emitting portion is reflected by the lower reflector. The lower light receiving portion receives the reflected light through the opening 591. Therefore, the lower detection unit 78 can detect whether or not the lower specific end portion 8A is located at the lower detection position, which is a predetermined position in the left-right direction. The lower detection position is a left-right position on the right side of the position where the lower holding roller 76 sandwiches the lower sheet 8 with the lower surface 317, and a front-rear position on the front side of the nozzle 11 described later.

As shown in FIG. 2, the upper transfer mechanism 70 includes an upper transfer arm 16, an upper transfer roller 12, an upper transfer motor 112, a transmission mechanism, an air cylinder 122 (see FIG. 11), and a link mechanism. The upper transport arm 16 extends from the rear to the front below the head 5, and further extends forward and downward. The tip portion 16A of the upper transport arm 16 rotatably supports the upper transport roller 12. The upper transfer roller 12 can rotate about the left-right direction as an axial direction. The upper transfer motor 112 is provided on the upper transfer arm 16. The upper transfer motor 112 is connected to the upper transfer roller 12 via a transmission mechanism provided inside the upper transfer arm 16. The transmission mechanism is, for example, a pulley or a belt. The upper transfer roller 12 is rotated with the left-right direction as an axial direction by the power of the upper transfer motor 112.

The air cylinder 122 is provided on the head 5 in a posture along the front-rear direction. The air cylinder 122 is connected to the upper transport arm 16 via a link mechanism. The upper transport arm 16 swings in the vertical direction by driving the air cylinder 122. When the air cylinder 122 swings the upper transport arm 16, the upper transport roller 12 swings between the transport position (see FIG. 4) and the upper position (see FIG. 2). The transport position is the swing position of the upper transport roller 12 that sandwiches the lower sheet 8 and the upper sheet 6 with the lower transport roller 64. The positions where the upper transfer roller 12 and the lower transfer roller 64 sandwich the lower sheet 8 and the upper sheet 6 correspond to the points P in FIGS. 4 and 19 to 21. The upper position is the swinging position of the upper transport roller 12 separated upward from the transport position.

The upper holding mechanism 30 will be described with reference to FIG. 7. The upper holding mechanism 30 changes the position of the upper seat 6 in the left-right direction. The upper holding mechanism 30 is provided below the arm portion 4. The upper holding mechanism 30 includes an upper supporting portion 34, an upper arm 31, a rotating shaft 33, an upper holding roller 32, an upper holding motor 38, a transmission mechanism, a spring 37, an air cylinder 39, and the like. The upper support portion 34 has a box shape fixed to the right side of the lower surface of the arm portion 4. The upper support portion 34 includes a circular through hole (not shown) that opens in the front-rear direction. The through hole rotatably supports the upper rotating portion. The upper rotating portion projects forward and backward from the through hole of the upper support portion 34. The rotation axis of the upper rotation portion is the axis W extending in the front-rear direction. The upper arm 31 has an arm shape and a tubular shape extending downward to the left from the upper rotating portion. In other words, the upper arm 31 extends in a direction orthogonal to the transport direction. The upper arm 31 swings as the upper rotating portion rotates.

The upper arm 31 has a tip portion 31A that rotatably supports a rotation shaft 33 extending in the front-rear direction. The upper holding roller 32 is fixed to the rotating shaft 33. That is, the upper holding roller 32 can rotate with the front-rear direction as the axial direction. The upper holding roller 32 is arranged above the lower holding roller 76 and is on the front side of the upper conveying roller 12. The upper holding motor 38 is a motor that is fixed to the rear portion of the upper rotating portion and can rotate in the forward and reverse directions, and can rotate together with the upper rotating portion. The drive shaft of the upper pinching motor 38 protrudes forward and enters the inside of the upper rotating portion. The transmission mechanism includes a shaft member extending in the front-rear direction inside the upper rotating portion, a pulley provided at the front end of the shaft member, a belt, and the like. The transmission mechanism transmits the driving force of the upper holding motor 38 to the rotating shaft 33. Therefore, when the upper holding motor 38 is driven, the upper holding roller 32 is rotated in the forward and reverse directions.

As the upper rotating portion rotates, the upper arm 31 swings around the axis W. At this time, the upper holding roller 32 swings between the upper holding position (see FIG. 4) and the upper separation position (see FIG. 7). The upper holding position is the swinging position of the upper holding roller 32 in which the lower end of the upper holding roller 32 sandwiches the upper sheet 6 with the upper surface 315 of the rotation support portion 314. The upper separation position is the swing position of the upper holding roller 32 separated upward from the upper holding position.

The spring 37 urges the upper arm 31 clockwise in the front view around the axis W via another member. Therefore, the spring 37 urges the upper arm 31 in the rotation direction from the upper holding position to the upper separation position. Due to the weight of the upper arm 31 and the upper holding roller 32 and the like, the tip portion 31A of the upper arm 31 faces downward. The spring 37 urges the upper arm 31 in the direction opposite to the urging. Therefore, the spring 37 prevents the upper holding roller 32 in the upper holding position from excessively exerting a downward force. The air cylinder 39 is fixed to the upper support portion 34. The air cylinder 39 rotates the upper pinching motor 38 about the axis W via a fixing member 35 fixed to the right surface of the upper pinching motor 38. Therefore, due to the drive of the air cylinder 39, the upper holding roller 32 swings from the upper holding position to the upper separation position.

The adhesive device 1 includes an upper detection unit 85 below the arm portion 4. The upper detection unit 85 is an optical detector in which an upper light emitting unit and an upper light receiving unit are integrated. The upper detection unit 85 is provided at a front-rear position between the upper transport roller 12 and the upper holding roller 32. The upper light emitting part and the upper light receiving part are at the same height position as each other. The upper light emitting portion emits light from above toward the upper reflector provided on the upper surface 315 of the rotation support portion 314. The light emitted by the upper light emitting part is reflected by the upper reflector. The upper light receiving unit receives the reflected light reflected by the upper reflector.

For example, when the upper specific end portion 6A of the upper sheet 6 is above the upper reflector, the upper specific end portion 6A blocks the light emitted by the upper light emitting portion. Therefore, the upper light receiving unit does not receive the light emitted by the upper light emitting unit. When the upper specific end portion 6A is not above the upper reflector, the light emitted by the upper light emitting portion is reflected by the upper reflector. The upper light receiving part receives the reflected light. Therefore, the upper detection unit 85 can detect whether or not the upper specific end portion 6A is located at the upper detection position, which is a predetermined position in the left-right direction of the upper surface 315 of the rotation support portion 314. The upper detection position is a left-right position on the left side of the position where the upper holding roller 32 sandwiches the upper sheet 6 with the upper surface 315 of the rotation support portion 314, and a front-rear position on the front side of the nozzle 11. ..

The nozzle swing mechanism 22 provided on the head portion 5 will be described with reference to FIG. 7. The nozzle swing mechanism 22 includes a nozzle motor 113, a support shaft 9, a nozzle lever 18, a nozzle 11, and the like. The nozzle motor 113 is fixed inside the head 5. The drive shaft of the nozzle motor 113 projects forward and fixes the motor gear 15. The support shaft 9 extends in the left-right direction above the drive shaft of the nozzle motor 113. The central portion of the support shaft 9 fixes the worm wheel 25 that meshes with the upper portion of the motor gear 15. The nozzle lever 18 is fixed to the left end of the support shaft 9. The nozzle lever 18 extends downward from the support shaft 9. The nozzle 11 is connected to the lower end of the nozzle lever 18 and is located on the front side with respect to the lower transfer roller 64 and the upper transfer roller 12. The nozzle 11 includes a vertically extending portion extending downward from the nozzle lever 18 and a horizontally extending portion extending to the right from the lower end of the vertically extending portion. The horizontally extended portion has a discharge port 13 on the lower surface. The discharge port 13 is a plurality of circular holes arranged at substantially equal intervals in the left-right direction. The upper sheet 6 is arranged on the upper part of the horizontally extended portion. Therefore, the nozzle 11 can discharge the adhesive Z between the lower sheet 8 and the upper sheet 6 from the discharge port 13.

When the driving force of the nozzle motor 113 is transmitted to the motor gear 15 and the worm wheel 25, the nozzle lever 18 rotates about the support shaft 9. At this time, the nozzle 11 is displaced between the proximity position (see FIG. 2) and the retreat position. When the nozzle 11 is in a close position, the discharge port 13 is directly above the roller under the nozzle 65 and faces downward. The nozzle 11 in the retreat position is located in front of the upper holding roller 32. When the nozzle 11 is in the retreat position, the discharge port 13 faces forward and downward.

The nozzle 11 has a flow path 11A inside, and the nozzle lever 18 has a flow path 21 inside. The flow paths 11A and 21 are flow paths of the adhesive Z communicating with each other. The flow path 11A communicates with the discharge port 13. The nozzle lever 18 includes a nozzle heater 132 (see FIG. 11) inside. The nozzle heater 132 heats the adhesive Z flowing through the flow path 21.

As shown in FIG. 1, the head 5 includes a mounting portion 41. The mounting portion 41 is provided at substantially the center of the head 5, and includes a cover 41A, an accommodating portion, a lid 41B, and a heater 131 (see FIG. 11). The cover 41A has a substantially rectangular parallelepiped box shape and extends upward from the upper surface of the head 5. The cover 41A opens in the vertical direction. The accommodating portion is provided inside the cover 41A. The housing portion has a substantially rectangular parallelepiped box shape and extends from the inside of the head 5 to the upper end of the cover 41A. The containment section opens upward. The accommodating portion internally accommodates a cartridge (not shown) in a detachable manner. The lid 41B is detachably provided on the upper side of the accommodating portion to open and close the upper opening of the accommodating portion. The cartridge contains the heat-meltable adhesive Z. The adhesive Z liquefies when it reaches the melting temperature and solidifies at a temperature lower than the melting temperature. The heater 131 is provided in the accommodating portion. That is, the heater 131 is provided in the supply path for supplying the adhesive Z to the nozzle 11. The heater 131 heats the cartridge housed in the housing section. The adhesive Z is melted and liquefied by heating the heater 131. By removing the lid 41B, the operator can replace the cartridge accommodated in the accommodating portion with another cartridge.

The arm portion 4 further includes a supply mechanism. The supply mechanism includes a pump motor 114 (see FIG. 11) and a gear pump. The pump motor 114 is arranged inside the arm portion 4 and is located on the right front side of the mounting portion 41. The drive shaft of the pump motor 114 projects to the left and is connected to the gear pump via a gear. The gear pump is connected to the support shaft 9. The gear pump sucks the adhesive Z from the cartridge by driving the pump motor 114. The gear pump supplies the sucked adhesive Z to the flow path 11A of the nozzle 11 via the flow path 21 (see FIG. 7) of the nozzle lever 18. Therefore, the nozzle 11 discharges the adhesive Z from the discharge port 13.

The holding mechanism 800 will be described with reference to FIGS. 4 and 9. The holding mechanism 800 includes a support base 802, a rotating shaft 804, a rotating member 806, an air cylinder 809, and a holding member 810. The support base 802 extends upward from the inner bottom of the frame 55 (see FIG. 1) and enters the inside of the support frame 61. The rotation shaft 804 is a shaft extending in the left-right direction, and is supported by the upper end portion of the support base 802. The rotating member 806 is rotatably provided at both left and right ends of the rotating shaft 804. The rotating member 806 includes a first arm 806A extending downward from the connecting portion of the rotating shaft 804 and a second arm 806B extending rearward from the connecting portion with the rotating shaft 804. The second arm 806B is located below the shaft portion 75 of the lower holding mechanism 80. The air cylinder 809 is fixed to the inner portion of the frame 55 (see FIG. 1) in front of the first arm 806A. The air cylinder 809 includes a drive shaft 809A extending in the front-rear direction, and the rear end of the drive shaft 809A is connected to the first arm 806A.

The holding member 810 is fixed to the rear end of the second arm 806B and is located below the rotation support portion 314. The holding member 810 is provided on the front side of the lower holding roller 76 and on the rear side of the support frame portion 73 (see FIG. 8). The holding member 810 is aligned with at least a part of the discharge port 13 (see FIG. 7) of the nozzle 11 in the front-rear direction. The holding member 810 has a substantially U-shape that opens downward when viewed from the front, and the opening portion is an insertion hole 810A through which the shaft portion 75 is inserted. When the lower holding roller 76 of the lower holding mechanism 80 swings between the lower holding position and the lower separating position, the shaft portion 75 swings up and down inside the insertion hole 810A and is separated from the holding member 810. To maintain.

As the drive shaft 809A moves in the front-rear direction with the driving of the air cylinder 809, the rotating member 806 rotates with respect to the rotating shaft 804. Therefore, the holding member 810 is switched between the holding state (see FIG. 19) and the released state (see FIG. 4). The holding member 810 in the holding state sandwiches and holds the lower sheet 8 with the lower surface 317 of the rotation support portion 314. The holding member 810 in the holding state projects upward from the notch hole 57A (see FIG. 3) formed at the rear end of the support plate 57. The position where the holding member 810 holds the lower sheet 8 between the rotating support portion 314 and the lower seat 8 is above the shaft portion 75 of the lower holding mechanism 80, and is substantially the same height as the discharge port 13. The holding member 810 in the released state is located below the holding member 810 and releases the lower sheet 8 between the holding member 810 and the lower surface 317. The upper end of the holding member 810 at this time is at substantially the same vertical position as the upper surface of the support plate 57. Hereinafter, the holding mechanism 800 when the holding member 810 is in the holding state may be referred to as "holding mechanism 800 in the holding state", and the holding mechanism 800 when the holding member 810 is in the released state is referred to as "holding mechanism in the released state". It may be called "800".

The tread plate 7 provided on the floor surface will be described with reference to FIG. The tread plate 7 can be rotated around the support shaft 97 by being operated by the operator's feet. At this time, the tread plate 7 rotates between the stepping position and the treading position. The upper surface of the tread plate 7 when in the stepping position is indicated by the alternate long and short dash line Pb. The upper surface of the tread plate 7 when in the tread position is indicated by the alternate long and short dash line Pn. The tread plate 7 shown by the solid line in FIG. 10 is in a neutral position between the stepping position and the stepping position. The tread plate 7 maintains a neutral position when there is no operation by the operator. One end of the tread plate 7 is connected to the tip of the rotary lever 92 via a connecting rod 96.

The support shaft 91 rotatably supports the base end portion of the rotary lever 92. The support shaft 91 is fixed to the box 88 below the workbench. The spring 93 constantly urges the rotary lever 92 counterclockwise when viewed from the right side. When the rotary lever 92 comes into contact with the stopper 94, its rotation in the counterclockwise direction is restricted when viewed from the right side. When the operator steps back on the tread plate 7 in the neutral position toward the tread position, the stopper 94 moves upward. When the operator steps on the tread plate 7 in the neutral position toward the stepping position, the spring 93 extends. The base end portion of the rotary lever 92 is connected to the drive shaft of the potentiometer 95. The drive shaft of the potentiometer 95 rotates in synchronization with the rotation lever 92. As the tread plate 7 rotates, the rotation lever 92 rotates via the connecting rod 96. The drive shaft of the potentiometer 95 rotates as the rotation lever 92 rotates. The potentiometer 95 outputs a detected voltage value according to the rotation angle of the drive shaft to the CPU 101 (see FIG. 11) described later.

The electrical configuration of the adhesive device 1 will be described with reference to FIG. The bonding device 1 includes a control device 100. The control device 100 includes a CPU 101, a ROM 102, a RAM 103, a storage device 104, a potentiometer 95, and drive circuits 105 and 106. The CPU 101 controls the operation of the adhesive device 1 in an integrated manner. The CPU 101 includes ROM 102, RAM 103, storage device 104, operation unit 19, potentiometer 95, lower detection unit 78, upper detection unit 85, drive circuit 105, 106, heater 131, nozzle heater 132, temperature sensor 133, nozzle temperature sensor 134, timer 135. , Connects to the display unit 260. The ROM 102 stores a program that executes various processes. The RAM 103 temporarily stores various types of information. The storage device 104 is non-volatile and stores various set values and the like. The storage device 104 stores a temperature flag and an abnormality notification flag, which will be described later.

The operation unit 19 detects the input of various information and outputs the detection result to the CPU 101. The potentiometer 95 is connected to the tread plate 7. The potentiometer 95 outputs a detected voltage value according to the rotation position of the tread plate 7 to the CPU 101. Therefore, the CPU 101 can determine whether or not the tread plate 7 is in the neutral position, whether or not the tread plate 7 is stepped on, and whether or not the tread plate 7 is stepped back. The lower detection unit 78 and the upper detection unit 85 output the detection result to the CPU 101.

By transmitting a control signal to the drive circuit 105, the CPU 101 drives each of the lower transfer motor 63, the upper transfer motor 112, the nozzle motor 113, the pump motor 114, the gap adjustment motor 68, the lower pinch motor 72, and the upper pinch motor 38. Control. The CPU 101 drives and controls each of the air cylinders 39, 122, 809, and 931 by transmitting a control signal to the drive circuit 106. The CPU 101 drives the heater 131 and the nozzle heater 132. The heater 131 heats the adhesive Z in the cartridge. The nozzle heater 132 heats the adhesive Z flowing through the flow path 21 inside the nozzle lever 18 toward the discharge port 13. The adhesive Z is liquefied by heating the heater 131 and the nozzle heater 132. The temperature sensor 133 detects the temperature of the heater 131. The nozzle temperature sensor 134 detects the temperature of the nozzle heater 132. The timer 135 outputs the timing result to the CPU 101. The display unit 260 is provided on a workbench, for example. The display unit 260 displays various information in response to the control signal from the CPU 101.

An outline of the bonding operation of the bonding device 1 will be described with reference to FIGS. 4 and 19 to 21. At the start of the bonding operation, the bonding device 1 is in the initial state. When the bonding device 1 is in the initial state, the nozzle 11 is in the close position, the upper transfer roller 12 is in the transfer position, the rotation support portion 314 is in the operating position, and the lower holding roller 76 is in the lower separation position. The upper holding roller 32 is in the upper separated position (see FIG. 7), the rear end of the support frame 61 is raised upward, and the holding mechanism 800 is in the released state.

When the operator turns on the power of the adhesive device 1, the adhesive device 1 heats and liquefies the adhesive Z by the heater 131 and the nozzle heater 132. The heater 131 rises to a start-up temperature higher than a predetermined temperature, maintains the start-up temperature for a predetermined time (hereinafter referred to as a predetermined time) from the power-on of the adhesive device 1, and then falls to a predetermined temperature. The predetermined temperature is the temperature of the adhesive Z suitable for discharging the adhesive Z to the lower sheet 8, and is higher than the melting temperature of the adhesive Z. The predetermined temperature is included in the temperature range of the adhesive Z when the adhesive device 1 discharges the lower sheet 8 and the upper sheet 6 from the discharge port 13.

When the operator operates the tread plate 7, the upper transfer roller 12 swings to the upper position (see FIG. 2), and the lower holding roller 76 swings to the lower holding position and rotates with the drive of the lower holding motor 72. Start moving. The lower sheet 8 is arranged on the support plate 57 and the nozzle plate 59, and is inserted between the lower holding roller 76 and the rotation support portion 314. After the rear end of the support frame 61 moves upward, the upper sheet 6 is arranged on the support plate 57 and the rotation support portion 314. The upper pinching roller 32 swings to the upper pinching position and starts rotating with the drive of the upper pinching motor 38. After the rotation of the upper holding roller 32 is started, the upper transport roller 12 swings to the transport position.

The bonding device 1 starts the bonding operation. Specifically, the lower transfer motor 63 and the upper transfer motor 112 start driving, and the transfer mechanism 20 moves the lower sheet 8 and the upper sheet 6 to the rear side in cooperation with the lower transfer roller 64 and the upper transfer roller 12. Transport. At the same time, the pump motor 114 is driven, and the nozzle 11 discharges the adhesive Z from the discharge port 13. The transport mechanism 20 crimps the upper sheet 6 and the lower sheet 8 with the adhesive Z discharged by the nozzle 11 in between. Therefore, the adhesive device 1 adheres the upper sheet 6 and the lower sheet 8. At this time, the rotation direction of the lower holding roller 76 is switched according to the detection result of the lower detection unit 78, and the rotation direction of the upper holding roller 32 is switched according to the detection result of the upper detection unit 85. Therefore, the adhesive device 1 can keep the lengths of the lower specific end portion 8A and the upper specific end portion 6A, which are vertically overlapped with each other, in a certain range in the left-right direction.

When the bonding operation is stopped, the bonding device 1 switches the holding mechanism 800 from the released state to the holding state. When a predetermined time (hereinafter referred to as a predetermined holding time) elapses after the holding mechanism 800 is switched to the holding state, the adhesive device 1 stops driving the lower transfer motor 63, the upper transfer motor 112, and the pump motor 114. When the transport mechanism 20 is stopped, the lower sheet 8 tends to be in a state of being extended in the front-rear direction between the holding member 810 and the transport position (see FIG. 20). When the bonding operation is resumed, the bonding device 1 drives the lower transfer motor 63, the upper transfer motor 112, and the pump motor 114. At the start of transporting the upper sheet 6 and the lower sheet 8 by the transport mechanism 20, the holding member 810 switches from the holding state to the released state at a predetermined time (hereinafter referred to as a release time) (see FIG. 21).

The setting process will be described with reference to FIG. The setting process is a process of setting variables related to the heater temperature control process (see FIG. 13) and the main process (see FIG. 16), which will be described later. The variables are start-up temperature, predetermined time, predetermined temperature, predetermined holding time, and release time. The initial values of the above variables are stored in the storage device 104.

The CPU 101 determines whether or not to change the variable (S1). When the operator inputs information indicating that the variable is not changed to the operation unit 19 (S1: NO), the CPU 101 ends the setting process. At this time, the initial value of the variable is applied in the heater temperature control process and the main process.

When the operator inputs information indicating that the variable is changed to the operation unit 19 (S1: YES), the CPU 101 accepts the start-up temperature setting (S2). The operator inputs a desired start-up temperature to the operation unit 19, and the CPU 101 updates and stores the input temperature in the storage device 104 as the start-up temperature.

The CPU 101 accepts the setting of a predetermined time (S3). The operator inputs a desired predetermined time to the operation unit 19, and the CPU 101 updates and stores the input predetermined time in the storage device 104. The CPU 101 accepts a predetermined temperature setting (S4). The operator inputs a desired predetermined temperature to the operation unit 19, and the CPU 101 updates and stores the input predetermined temperature in the storage device 104. The CPU 101 accepts the setting of the predetermined holding time (S5). The operator inputs a desired predetermined holding time to the operation unit 19, and the CPU 101 updates and stores the input predetermined holding time in the storage device 104. The CPU 101 accepts the setting of the release time (S6). The operator inputs a desired release time to the operation unit 19. The desired release time is, for example, the time elapsed since the bonding device 1 resumes the bonding operation. The CPU 101 updates and stores the input release time in the storage device 104. The CPU 101 ends the setting process.

The heater temperature control process will be described with reference to FIGS. 13 to 15. The heater temperature control process is a process of controlling the temperature of the heater 131 from the start of the adhesive device 1 to heat the adhesive Z. The activation of this example includes the time when the power of the adhesive device 1 is turned on and the time when the cartridge mounted on the mounting portion 41 is replaced. At the start of the heater temperature control process, both the temperature flag and the abnormality notification flag stored in the storage device 104 are 0. The nozzle heater 132 is controlled to reach a predetermined temperature in parallel with the execution of the heater temperature control process, and the adhesive Z flowing inside the flow paths 11A and 21 (see FIG. 7) is liquefied.

The CPU 101 determines whether or not the detected temperature, which is the temperature detected by the temperature sensor 133, is equal to or higher than the determination temperature (S11). The determination temperature is a temperature lower than a predetermined temperature and higher than the melting temperature. For example, when the adhesive Z inside the cartridge is solidified, the detection temperature is lower than the determination temperature (S11: NO). The CPU 101 updates the storage temperature flag to 0 in the storage device 104 and stores it (S13).

The CPU 101 controls the timer 135 to start timing (S15). The CPU 101 controls the heater 131 while acquiring the detected temperature at a predetermined cycle so that the detected temperature becomes the startup temperature (S17). The CPU 101 determines whether or not the detected temperature is equal to or higher than the startup temperature (S19). When the detection temperature is lower than the startup temperature (S19: NO), the CPU 101 shifts the process to S17. When the CPU 101 repeats S17 and S19, the temperature of the heater 131 reaches the startup temperature. The time is time t1 in FIG. 15, and the temperature of the adhesive Z is lower than the starting temperature. The CPU 101 determines that the detected temperature is equal to or higher than the startup temperature (S19: YES).

The CPU 101 determines whether or not a predetermined time has elapsed from the start of timekeeping based on the timekeeping result of the timer 135 (S21). When it is determined that the predetermined time has not elapsed (S21: NO), the CPU 101 shifts the process to S17. When the CPU 101 repeats S17 to S21, the heater 131 maintains the starting temperature, and a predetermined time elapses from the start of timekeeping (S21: YES). In FIG. 15, the time when the predetermined time elapses is time t2, and the temperature of the adhesive Z is the start-up temperature. The CPU 101 updates the temperature flag stored in the storage device 104 to 1 (S23). When the temperature flag is 1, it indicates that the nozzle 11 can discharge the adhesive Z. The CPU 101 ends the timing of the timer 135 (S25).

As shown in FIG. 14, the CPU 101 updates the memory abnormality notification flag in the storage device 104 to 0 (S31). The CPU 101 controls the heater 131 so that the detection temperature becomes a predetermined temperature (S33). The CPU 101 determines whether or not the detection temperature falls within a predetermined range (S35). The predetermined range is a range of ± α ° C. with respect to the predetermined temperature received in S3, and is a range including the predetermined temperature. Immediately after the detection temperature starts to gradually decrease from the start-up temperature, the detection temperature is higher than the predetermined range (S35: NO).

The CPU 101 determines whether or not the cartridge mounted on the mounting unit 41 is replaced (S39). When the operator inputs the cartridge replacement information, which is the information indicating that the cartridge replacement is executed, to the operation unit 19 (S39: YES), the CPU 101 controls the heater 131 so that the detected temperature becomes a predetermined temperature (S45). ). The CPU 101 determines whether or not the replacement of the cartridge is completed (S46). The CPU 101 shifts the process to S45 and repeats S45 and S46 until the operator inputs the replacement completion information indicating that the cartridge has been replaced (S46: NO). At this time, the operator replaces the cartridge mounted on the mounting unit 41 with a new cartridge. The operator inputs the exchange completion information to the operation unit 19 (S46: YES), and the CPU 101 shifts the process to S13 (see FIG. 13). After the execution of S13 and S15, the CPU 101 controls the heater 131 while acquiring the detected temperature at a predetermined cycle so that the detected temperature becomes the startup temperature (S17).

When the operator does not input the cartridge replacement information to the operation unit 19 (S39: NO), the CPU 101 determines whether or not the tread plate 7 has been stepped on (S41). When the operator does not step on the tread plate 7 (S41: NO), the CPU 101 shifts the process to S33. When the CPU 101 repeats S33, S35, S39, and S41, the detection temperature gradually decreases from the startup temperature and falls within a predetermined range. In FIG. 15, the time when the detected temperature reaches the predetermined temperature is t3, and the adhesive Z is higher than the predetermined temperature. When the CPU 101 determines that the detection temperature is within the predetermined range (S35: YES), the CPU 101 updates the storage abnormality notification flag to 1 and stores it in the storage device 104 (S37). When the abnormality notification flag is 1, it indicates that the abnormality notification is executed when the detection temperature is out of the predetermined range.

In the bonding process (see FIG. 17) described later, the bonding device 1 executes the bonding operation while the operator steps on the tread plate 7 (S73: YES, S78: NO). At that time, the CPU 101 determines that the tread plate 7 has been stepped on (S41: YES). The CPU 101 determines whether or not the detection temperature is within a predetermined range (S42). When the detection temperature is within the predetermined range (S42: YES), the CPU 101 shifts the process to S33 and repeats S33, S35, S39, S41, and S42. At that time, when the detection temperature deviates from the predetermined range for a sudden reason (S42: NO), the CPU 101 determines whether or not the abnormality notification flag is 1 (S43). When the abnormality notification flag is 1 (S43: YES), the CPU 101 executes the abnormality notification (S44). For example, the CPU 101 displays information indicating that the temperature of the adhesive Z is out of the predetermined range on the display unit 260. The CPU 101 shifts the process to S33 and repeats S33, S35, S39, S41, and S42.

Before the detection temperature drops from the start-up temperature to within a predetermined range (S35: NO), the operator may step on the tread plate 7 in the bonding process described later (S73: YES). The CPU 101 determines that the tread plate 7 has been stepped on (S41: YES). The detection temperature is out of the predetermined range (S42: NO). At this time, the abnormality notification flag is 0 (S43: NO), and the CPU 101 does not execute S44 and shifts the process to S33. Therefore, the bonding device 1 can stably execute the bonding operation without falsely notifying the occurrence of an abnormality.

When the detection temperature is higher than the determination temperature in S11 (S11: YES), the CPU 101 determines whether or not the temperature flag of storage in the storage device 104 is 1. When the temperature flag is 0 (S27: NO), the CPU 101 shifts the process to S13. When the temperature flag was updated to 1 in the previous heater temperature control process (S23), in the current heater temperature control process, the CPU 101 determines that the temperature flag is 1 (S27: YES), and performs the process in S31. Move to. That is, the CPU 101 does not execute the control (S17) of the heater 131 in which the detected temperature becomes the startup temperature. Since the adhesive Z has been liquefied before the start of the heater temperature control process this time, the adhesive device 1 can omit S17 to S21 and can prevent the adhesive Z from being unnecessarily heated at a high temperature.

The main processing will be described with reference to FIGS. 16 to 23. At the start of the main process, the nozzle 11 is in the proximity position and the rotation support portion 314 is in the operating position. When the power of the bonding device 1 is turned on, the CPU 101 starts the main process. The main process is executed in parallel with the heater temperature control process. The CPU 101 determines whether or not an operation instruction has been given to the operation unit 19 (S49). The CPU 101 waits until the operator inputs an operation instruction to the operation unit 19 (S49: NO). When the operator inputs an operation instruction to the operation unit 19 (S49: YES), the CPU 101 controls the air cylinder 931 to swing the lower holding roller 76 from the lower holding position to the lower separation position to control the air cylinder 39. Then, the upper holding roller 32 swings from the upper holding position to the upper separated position (S50). The CPU 101 controls the gap adjusting motor 68 to lower the rear end of the support frame 61 to expand the nozzle gap (S51). The CPU 101 determines whether or not the roller swing instruction has been detected (S52). The roller swing instruction is an instruction to swing the upper transport roller 12 in the vertical direction. The CPU 101 waits until the operator inputs the roller swing instruction to the operation unit 19 (S52: NO). When the operator inputs a roller swing instruction to the operation unit 19 (S52: YES), the CPU 101 controls the air cylinder 122 to swing the upper transfer roller 12 from the transfer position to the upper position (S53).

The CPU 101 controls the air cylinder 931 to swing the lower holding roller 76 from the lower separating position to the lower holding position (S54). The CPU 101 starts the lower edge control process (see FIG. 22) described later (S55). Specifically, the CPU 101 updates the lower edge flag stored in the storage device 104 from 0 to 1. When the lower edge flag is 0, the end of the lower edge control process is indicated, and when the lower edge flag is 1, the start of the lower edge control process is indicated. Even when the lower edge flag stored in the storage device 104 is already 1, the CPU 101 overwrites the lower edge flag with 1.

The CPU 101 determines whether or not the lower sheet 8 is arranged (S59). The CPU 101 waits until the operator inputs information indicating the completion of the arrangement of the lower sheet 8 to the operation unit 19 (S59: NO). At this time, the operator arranges the lower sheet 8. Specifically, the operator arranges the lower sheet 8 on the support plate 57, the nozzle plate 59, and the lower transfer roller 64. The lower sheet 8 is sandwiched between the lower holding roller 76 and the lower surface 317 of the rotation support portion 314. When the operator inputs information indicating the completion of the arrangement of the lower sheet 8 to the operation unit 19 (S59: YES), the CPU 101 controls the gap adjusting motor 68 to move the rear end of the support frame 61 upward to close the nozzle gap. Reduce (S61).

The CPU 101 determines whether or not the upper sheet 6 is arranged (S62). The CPU 101 waits until the operator inputs information indicating the completion of the arrangement of the upper sheet 6 to the operation unit 19 (S62: NO). At this time, the operator arranges the upper sheet 6. Specifically, the operator arranges the upper sheet 6 from above on the support plate 57, the upper surface 315 of the rotation support portion 314, the horizontally extended portion of the nozzle 11, and the rear end portion of the lower sheet 8. When the operator inputs information indicating the completion of the arrangement of the upper sheet 6 to the operation unit 19 (S62: YES), the CPU 101 controls the air cylinder 39 to swing the upper holding roller 32 from the upper separation position to the upper holding position. It moves (S63). The upper holding roller 32 sandwiches the upper sheet 6 with the upper surface 315 of the rotation support portion 314.

The CPU 101 starts the upper edge control process (see FIG. 23) described later (S64). Specifically, the CPU 101 updates the upper edge flag stored in the storage device 104 from 0 to 1. When the upper edge flag is 0, the end of the upper edge control process is indicated, and when the upper edge flag is 1, the start of the upper edge control process is indicated. Even when the upper edge flag stored in the storage device 104 is already 1, the CPU 101 overwrites the upper edge flag with 1.

The CPU 101 determines whether or not the roller swing instruction has been detected (S65). The CPU 101 waits until the operator inputs the roller swing instruction to the operation unit 19 (S65: NO). When the operator inputs a roller swing instruction to the operation unit 19 (S65: YES), the CPU 101 controls the air cylinder 122 to swing the upper transfer roller 12 from the upper position to the transfer position (S66). The upper transfer roller 12 sandwiches the lower sheet 8 and the upper sheet 6 with the lower transfer roller 64. The CPU 101 executes the bonding process (S69).

As shown in FIG. 17, the CPU 101 determines whether or not the tread plate 7 has been stepped on (S73). The CPU 101 waits until the operator steps on the tread plate 7 (S73: NO). When the operator steps on the tread plate 7 (S73: YES), the CPU 101 determines whether or not the detection temperature is within a predetermined range (S75). When the detection temperature is not within the predetermined range (S75: NO), the CPU 101 shifts the process to S73.

When the detection temperature is within the predetermined range (S75: YES), the CPU 101 controls the lower transfer motor 63 and the upper transfer motor 112 to start driving the lower transfer roller 64 and the upper transfer roller 12 (S76). The transport mechanism 20 transports the upper sheet 6 and the lower sheet 8 to the rear side by the cooperation of the upper transfer roller 12 and the lower transfer roller 64. The CPU 101 controls the pump motor 114 to start discharging the adhesive Z (S77). By driving the pump motor 114, the supply mechanism supplies the cartridge and the adhesive Z liquefied in the flow paths 11A and 21 to the discharge port 13. Therefore, the nozzle 11 discharges the adhesive Z from the discharge port 13.

The CPU 101 determines whether or not the tread plate 7 is in the neutral position (S78). The rotation of the tread plate 7 from the stepping position to the neutral position indicates that the bonding operation is stopped. That is, in S78, the CPU 101 determines whether or not to stop the adhesion between the upper sheet 6 and the lower sheet 8. While the operator is stepping on the tread plate 7 (S78: NO), the CPU 101 stands by. At this time, the nozzle 11 discharges the adhesive Z toward the lower sheet 8, and the transport mechanism 20 crimps the lower sheet 8 and the upper sheet 6 coated with the adhesive Z and transports them to the rear side. Therefore, the adhesive device 1 adheres the lower sheet 8 and the upper sheet 6.

When the tread plate 7 that the operator has stepped on is returned to the neutral position (S78: YES), the CPU 101 determines that the adhesion between the upper sheet 6 and the lower sheet 8 is stopped, and controls the air cylinder 809 to release the holding member 810. The state is switched to the holding state (S79). The holding member 810 sandwiches the lower sheet 8 with the lower surface 317 of the rotation support portion 314 (see FIG. 19).

The CPU 101 controls the timer 135 to start timing (S80). The CPU 101 determines whether or not the predetermined holding time has elapsed (S81). The CPU 101 waits until the predetermined holding time elapses (S81: NO). At this time, the lower transfer motor 63, the upper transfer motor 112, and the pump motor 114 are driven. By driving the lower transfer roller 64 and the upper transfer roller 12, the lower sheet 8 is in a posture extended in the front-rear direction between the holding member 810 and the transfer position (see FIG. 20).

When the predetermined holding time elapses (S81: YES), the CPU 101 ends the control of the timer 135 and ends the timekeeping (S82). The CPU 101 stops driving the lower transfer motor 63, the upper transfer motor 112, and the pump motor 114 (S83). The bonding device 1 stops the bonding operation.

The CPU 101 determines whether or not the tread plate 7 in the neutral position has been stepped on (S84). When the operator steps on the tread plate 7 (S84: YES), the CPU 101 determines whether or not the detection temperature is within a predetermined range (S90). When the detection temperature is not within the predetermined range (S90: NO), the CPU 101 stands by. When the detection temperature is within the predetermined range (S90: YES), the CPU 101 controls the lower transfer motor 63 and the upper transfer motor 112, and restarts the driving of the lower transfer roller 64 and the upper transfer roller 12 (S91).

The CPU 101 controls the timer 135 to start timing (S92). The CPU 101 determines whether or not the release time has arrived based on the timing result of the timer 135 (S93). The CPU 101 waits until the release time arrives (S93: NO). At this time, the holding member 810 in the holding state and the lower sheet 8 in the transporting position maintain the stretched state in the front-rear direction (see FIG. 21). When the release time arrives (S93: YES), the CPU 101 controls the air cylinder 809 to switch the holding member 810 from the holding state to the released state (S94). The holding member 810 is separated downward from the lower sheet 8 (see FIG. 21). The CPU 101 controls the timer 135 to end the timing (S95).

The CPU 101 shifts the process to S77, and the bonding device 1 continues the bonding operation. When the tread plate 7 that the operator has stepped on is returned to the neutral position (S78: YES), the CPU 101 executes S80 to S84 after holding the holding member 810 in the holding state (S79). When the operator does not step on the tread plate 7 (S84: NO), the CPU 101 determines whether or not the tread plate 7 has been stepped back (S85). When the tread plate 7 is not stepped back (S85: NO), the CPU 101 shifts the process to S84. When the operator steps back on the tread plate 7 (S85: YES), the CPU 101 controls the air cylinder 809 to release the holding member 810 (S86), and returns to the main process.

The CPU 101 ends the lower edge control process (see FIG. 22) and the upper edge control process (see FIG. 23), which will be described later (S70). Specifically, the CPU 101 updates the lower edge flag and the upper edge flag stored in the storage device 104 from 1 to 0, respectively. The CPU 101 determines whether or not there has been an operation of turning off the power of the adhesive device 1 (S72). When there is no operation to turn off the power (S72: NO), the CPU 101 shifts the process to S49. Before inputting the operation instruction in the operation unit 19 (S49: NO), the operator takes out the bonded lower sheet 8 and upper sheet 6. Therefore, the sheet 200 to which the lower specific end portion 8A and the upper specific end portion 6A are adhered is completed. When the CPU 101 executes S50 to S69, the bonding device 1 can bond the new lower sheet 8 and the upper sheet 6.

When there is an operation to turn off the power (S72: YES), the CPU 101 ends the main process.

The lower edge control process will be described with reference to FIG. The lower edge control process is a process executed in parallel with the main process. The CPU 101 determines whether or not to start the lower edge control process (S101). The CPU 101 waits until the lower edge flag stored in the storage device 104 is updated to 1 (S101: NO). When the lower edge flag is updated to 1 in S55 of the main process (S101: YES), the CPU 101 determines whether or not the lower specific end portion 8A is in the lower detection position based on the detection result of the lower detection unit 78. (S103). When the CPU 101 determines that the lower specific end portion 8A is in the lower detection position (S103: YES), the CPU 101 controls the lower pinch motor 72 to rotate the lower pinch roller 76 in the first output direction (S105). The first output direction is the rotation direction of the lower holding roller 76 in which the upper end of the lower holding roller 76 is directed to the left. The CPU 101 shifts the process to S109.

When the CPU 101 determines that the lower specific end portion 8A is not in the lower detection position (S103: NO), it controls the lower pinch motor 72 to rotate the lower pinch roller 76 in the second output direction (S107). The second output direction is opposite to the first output direction. The CPU 101 shifts the process to S109.

The CPU 101 determines whether or not to end the lower edge control process (S109). The CPU 101 shifts the process to S103 and repeats S103 to S109 until the lower edge flag is updated to 0 in S70 of the main process (S109: NO). When the CPU 101 executes S105, the lower sheet 8 moves to the left, and when the CPU 101 executes S107, the lower sheet 8 moves to the right. That is, during the execution of the bonding operation, the lower sheet 8 is conveyed to the rear side while reciprocating in the left-right direction while being sandwiched between the lower holding roller 76 and the lower surface 317 of the rotation support portion 314. ..

When the lower edge flag is updated from 1 to 0 in S70 of the main process (S109: YES), the CPU 101 stops driving the lower pinch motor 72 (S111), shifts the process to S101, and enters a standby state. ..

The upper edge control process will be described with reference to FIG. 23. The upper edge control process is a process executed in parallel with the main process. The CPU 101 determines whether or not to start the upper edge control process (S121). The CPU 101 waits until the upper edge flag stored in the storage device 104 is updated to 1 (S121: NO). When the upper edge flag is updated to 1 in S64 of the main process (S121: YES), the CPU 101 determines whether or not the upper specific end portion 6A is in the upper detection position based on the detection result of the upper detection unit 85. (S123). When the CPU 101 determines that the upper specific end portion 6A is in the upper detection position (S123: YES), the CPU 101 controls the upper pinch motor 38 to rotate the upper pinch roller 32 in the third output direction (S125). The third output direction is the rotation direction of the lower holding roller 76 in which the lower end of the upper holding roller 32 faces to the right. The CPU 101 shifts the process to S129.

When the CPU 101 determines that the upper specific end portion 6A is not in the upper detection position (S123: NO), the CPU 101 controls the upper pinching motor 38 to rotate the upper pinching roller 32 in the fourth output direction (S). S127). The fourth output direction is opposite to the third output direction. The CPU 101 shifts the process to S129.

The CPU 101 determines whether or not to end the upper edge control process (S129). Until the upper edge flag is updated from 1 to 0 in S70 of the main process (S129: NO), the CPU 101 shifts the process to S123 and repeats S123 to S129. When the CPU 101 executes S125, the upper sheet 6 moves to the right, and when the CPU 101 executes S127, the upper sheet 6 moves to the left. The CPU 101 alternately repeats S125 and S127. During the execution of the bonding operation, the upper sheet 6 moves back and forth in the left-right direction while being sandwiched between the upper holding roller 32 and the upper surface 315 of the rotation support portion 314, and moves to the rear side together with the lower sheet 8. Be transported.

When the upper edge flag is updated from 1 to 0 in S70 of the main process (S129: YES), the CPU 101 stops driving the upper pinch motor 38 (S131), shifts the process to S121, and enters a standby state. ..

During the bonding process, the CPU 101 repeats the lower edge control processes S103 to S109 and the upper edge control process S123 to S129. Therefore, the adhesive device 1 can keep the lengths of the lower specific end portion 8A and the upper specific end portion 6A, which are vertically overlapped with each other, in a certain range in the left-right direction.

The CPU 101 controls the heater 131 so that the detected temperature becomes the startup temperature (S17). For example, as shown in FIG. 15, conventionally, since the adhesive device controls the heater so that the detected temperature becomes a predetermined temperature at the time of starting, the temperature rise time of the heater and the adhesive is slow. In the present invention, when the CPU 101 executes S17, the liquefaction time of the adhesive Z at the time of startup is accelerated. After controlling the heater 131 in S17 so that the detected temperature becomes the start-up temperature, the CPU 101 executes S33 and controls the heater 131 so that the detected temperature becomes a predetermined temperature. Since the detection temperature drops to a predetermined temperature, an excessive increase in the viscosity of the adhesive Z is unlikely to occur. Therefore, the adhesive device 1 can shorten the heating time of the adhesive Z at the time of starting while suppressing the poor application of the adhesive Z.

The CPU 101 measures the time during which the heater 131 is controlled in S17 (S15, S25). The CPU 101 executes S17 until a predetermined time elapses (S21: NO). The CPU 101 controls the heater 131 in S33 after a predetermined time has elapsed (S21: YES). Therefore, the adhesive device 1 can be controlled so that the adhesive Z can be reliably liquefied at startup.

When the CPU 101 executes S33 after executing S17, the CPU 101 determines whether or not the detection temperature has dropped to within a predetermined range (S35). When the CPU 101 determines that the detected temperature has dropped to within a predetermined range, the CPU 101 updates the temperature appropriateness information (abnormality notification flag = 1) (S37). When the detection temperature is out of the predetermined range (S42: NO) and the storage device 104 stores the abnormality notification flag = 1 (S45: YES), the CPU 101 notifies the occurrence of an abnormality. For example, immediately after the heater 131 is controlled so that the detected temperature becomes the starting temperature and a predetermined time elapses (S21: YES), when the operator steps on the tread plate 7 (S41: YES), the detected temperature is within the predetermined range. Is also high (S42: NO). At this time, since the abnormality notification flag is 0 (S43: NO), the CPU 101 does not execute the abnormality notification (S44). Therefore, the adhesive device 1 does not perform false alarm of the occurrence of an abnormality, so that the usability can be improved.

The CPU 101 controls the heater 131 so that the detected temperature becomes the startup temperature at startup (S17). The start-up includes when the power of the adhesive device 1 is turned on and when the cartridge mounted on the mounting portion 41 is replaced. Since the adhesive device 1 can accelerate the liquefaction time of the adhesive Z when the power is turned on and when the cartridge is replaced, the adhesive operation can be made more efficient.

At the end of the control of the heater 131 for setting the detection temperature to the start-up temperature (S21: YES), the CPU 101 stores the discharge enable information (temperature flag = 1) in the storage device 104 (S23). In the heater temperature control process, at the time of startup, the detected temperature may be equal to or higher than the determination temperature (S11: YES), and the dischargeable information may be stored in the storage device 104 (S27: YES). The CPU 101 does not control the heater 131 so that the detected temperature becomes the startup temperature, but controls the heater 131 so that the detected temperature becomes a predetermined temperature (S33). When the adhesive Z is liquefied at startup, the CPU 101 does not execute S17. Therefore, the adhesive device 1 can suppress an excessive increase in the temperature of the adhesive Z, and thus can suppress an excessive increase in the viscosity of the adhesive Z.

In the setting process, the CPU 101 accepts the setting of the startup temperature and the predetermined temperature (S2, S4). Since the operator can freely set the start-up temperature and the predetermined temperature according to the adhesive Z, the upper sheet 6, and the lower sheet 8 to be used, the usability of the adhesive device 1 is improved.

In the setting process, the CPU 101 accepts the setting of the predetermined time (S3). Since the operator can set a predetermined time according to the types of the adhesive Z, the lower sheet 8, and the upper sheet 6 to be used, the usability of the adhesive device 1 is improved.

In the above description, the mounting portion 41 is an example of the cartridge mounting portion of the present invention. The CPU 101 that executes S33 is an example of the heating control unit of the present invention. The CPU 101 that executes S17 is an example of the high temperature heating control unit of the present invention. The CPU 101 that executes S15 and S25 is an example of the measurement control unit of the present invention. The CPU 101 that executes S35 is an example of the temperature determination unit of the present invention. The CPU 101 that executes S37 is an example of the temperature storage unit of the present invention. The CPU 101 that executes S42 is an example of the abnormality determination unit of the present invention. The CPU 101 that executes S44 is an example of the notification unit of the present invention. The CPU 101 that executes S23 is an example of the storage control unit of the present invention. The CPU 101 that executes S2 is an example of the temperature receiving unit of the present invention. The CPU 101 that executes S3 is an example of the time reception unit of the present invention.

The present invention is not limited to the above examples. The discharge port 13 of the nozzle 11 may be provided above the horizontal extension portion. At this time, the nozzle 11 discharges the adhesive Z onto the upper sheet 6. The transport mechanism 20 may include a transport belt instead of the lower transport roller 64 and the nozzle lower roller 65. The transport belt is arranged below the nozzle 11.

When the CPU 101 controls the heater 131 so that the detection temperature becomes the start-up temperature, the CPU 101 does not have to measure the time during which the heater 131 is controlled. That is, the processing of S15 and S25 may be omitted. At that time, when it is determined in S19 that the temperature of the heater 131 has reached the startup temperature (S19: YES), the CPU 101 updates the temperature flag stored in the storage device 104 to 1 (S23), and sets the abnormality notification flag. The heater 131 may be controlled so that the detection temperature becomes a predetermined temperature by updating to 0 (S31) (S33).

The CPU 101 does not have to determine in S11 whether or not the detected temperature is equal to or higher than the determination temperature. At that time, the CPU 101 may control the heater 131 so that the detected temperature becomes the startup temperature without fail at startup (S17).

The setting process may be omitted. At that time, the starting temperature setting, the predetermined time setting, and the predetermined temperature setting may be values stored in advance in the storage device 104. In the setting process, any one of the startup temperature setting, the predetermined time setting, and the predetermined temperature setting may be omitted.

1 Adhesive device 11 Nozzle 41 Mounting unit 101 CPU
104 Storage 131 Heater 133 Temperature Sensor 200 Sheet Z Adhesive

Claims (7)

A nozzle that ejects adhesive to the sheet and
A heater provided in a supply path for supplying the adhesive to the nozzle,
A temperature sensor that detects the temperature of the heater and
In an adhesive device including a heating control unit that controls the heater so that the detection temperature of the temperature sensor becomes a predetermined temperature which is the temperature of the adhesive suitable for the nozzle to discharge the adhesive to the sheet. ,
A high-temperature heating control unit that controls the heater so that the temperature detected by the temperature sensor becomes the temperature detected by the temperature sensor at the start-up temperature, which is higher than the predetermined temperature at the time of start-up.
With
The heating control unit is an adhesive device that controls the heater so that the detection temperature of the temperature sensor becomes the predetermined temperature after the control of the heater by the high temperature heating control unit is completed. A measurement control unit that measures the time during which the heater is controlled by the high temperature heating control unit is provided.
The adhesive device according to claim 1, wherein the high-temperature heating control unit controls the heater until the measurement time by the measurement control unit elapses for a predetermined time. After the control of the heater by the high temperature heating control unit is completed, when the heater is controlled by the heating control unit, the temperature determination unit determines whether or not the detection temperature of the temperature sensor has dropped to a predetermined range including the predetermined temperature. ,
When the temperature determination unit determines that the detection temperature of the temperature sensor has dropped to the predetermined range, the temperature storage unit stores in the storage device temperature appropriate information indicating that the detection temperature of the temperature sensor falls within the predetermined range. When,
An abnormality determination unit that determines whether or not the detection temperature of the temperature sensor falls within the predetermined range,
The abnormality determination unit determines that the detection temperature of the temperature sensor does not fall within the predetermined range, and when the storage device stores the temperature appropriate information, it is provided with a notification unit for notifying the occurrence of an abnormality. The adhesive device according to claim 1 or 2. A cartridge mounting portion on which a cartridge containing the adhesive can be mounted is provided.
The adhesive device according to any one of claims 1 to 3, wherein the start-up includes when the power of the adhesive device is turned on and when the cartridge mounted on the cartridge mounting portion is replaced. A storage control unit is provided that stores in a storage device dischargeable information indicating that the nozzle can discharge the adhesive when the control of the heater by the high temperature heating control unit is completed.
At the time of activation, the detection temperature of the temperature sensor is lower than the predetermined temperature and equal to or higher than the determination temperature higher than the melting temperature of the adhesive, and the storage device stores the dischargeable information. The adhesive device according to any one of claims 1 to 4, wherein the heating control unit controls the heater instead of the high temperature heating control unit. It is provided with a temperature receiving unit that accepts the setting of the startup temperature and the predetermined temperature.
The high-temperature heating control unit controls the heater so that the temperature detected by the temperature sensor becomes the temperature at the start-up received by the temperature reception unit.
The adhesive device according to any one of claims 1 to 5, wherein the heating control unit controls the heater so that the temperature detected by the temperature sensor becomes the predetermined temperature received by the temperature reception unit. .. It is equipped with a time reception unit that accepts the setting of the predetermined time.
The adhesive device according to claim 2, wherein the high-temperature heating control unit controls the heater until the measurement time by the measurement control unit elapses the predetermined time received by the time reception unit. ..

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