JP7056328B2 - Adhesive device - Google Patents

Description

The present invention relates to an adhesive device.

Adhesive devices that bond two sheets of cloth to each other via an adhesive are known. The adhesive device of Patent Document 1 includes a nozzle, an upper transfer roller, a belt, and a guide member for two edges. The nozzle ejects the adhesive to the lower sheet. The upper transfer roller transfers the lower sheet and the upper sheet coated with the adhesive while pressing them between the belt. The guide member for the two-edge portion includes a lower seat guide portion and an upper seat guide portion. The operator inserts the right end of the lower sheet into the lower sheet guide for positioning, and inserts the left end of the upper sheet into the upper sheet guide for positioning.

Japanese Unexamined Patent Publication No. 2011-122262

In the above-mentioned adhesive device, the operator needs to hold the lower sheet and the upper sheet to be transferred, and prevent the right end portion of the lower sheet and the left end portion of the upper sheet from shifting in the left-right direction with respect to the nozzle. However, if the operator's force to hold the lower sheet and the upper sheet is too strong, the upper sheet and the lower sheet may be pulled and displaced in the left-right direction, resulting in wrinkles. If the force of the operator to hold the lower sheet and the upper sheet is too weak, the right end of the lower sheet and the left end of the upper sheet may shift from the lower sheet guide and the upper sheet guide, and the amount of overlap between the lower and upper sheets may vary. There is sex. Therefore, it may be difficult to stably transfer the lower sheet and the upper sheet while maintaining the positional relationship between the right end portion of the lower sheet and the left end portion of the upper sheet with respect to the nozzles.

An object of the present invention is to provide an adhesive device capable of stably transporting the lower cloth and the upper cloth while the positional relationship between the end of the lower sheet and the end of the upper sheet of the upper sheet is not easily displaced from each other.

The adhesive device according to claim 1 is provided between a lower support portion that supports the lower sheet from below and an upper sheet that overlaps the lower sheet and the lower sheet from above, and supports the upper sheet from below. A nozzle having a portion, a discharge port for discharging the adhesive toward the adhesive surface of the lower sheet below the upper support portion, a supply mechanism for supplying the adhesive to the nozzle, and the nozzle. On the downstream side of the lower sheet and the upper sheet in the transport direction, the lower sheet to which the adhesive is adhered, the upper sheet sandwiched in the vertical direction, and the transport mechanism for transporting in the transport direction, and the transport mechanism. The adhesive is discharged from the discharge port by driving and controlling the supply mechanism, and is an end portion of the adhesive surface of the lower sheet on one side in a specific direction orthogonal to the transport direction and the vertical direction. While applying the adhesive to the specific end portion, the lower specific end portion and the upper specific end portion, which is the end portion of the upper sheet on the other side opposite to the one side, are pressure-bonded to each other and conveyed. In an adhesive device including a transport control unit, the adhesive device projects upward from the lower support portion on the upstream side in the transport direction with respect to the nozzle, is rotatable in the axial direction in the transport direction, and is in contact with the lower sheet. A support member that extends in the specific direction and the transport direction, sandwiches the lower sheet between the pinching roller, and supports the upper sheet from below, and the transport direction is the axial direction. An upper holding roller that is rotatable and sandwiches the upper sheet from above between the support member, a lower motor that drives the lower holding roller, and an upper motor that drives the upper holding roller, in the transport direction. Whether or not the lower detection unit detects whether or not the lower specific end is present at the lower detection position, which is a predetermined position, and whether or not the upper specific end is located at the upper detection position, which is a predetermined position in the transport direction. The motor control unit is provided with an upper detection unit for detecting the above, and a motor control unit for controlling the lower motor and the upper motor when the discharge transfer control unit controls the transfer mechanism and the supply mechanism. When the lower detection unit detects that the lower specific end portion is located at the lower detection position, the lower detection unit rotates and drives the lower holding roller in the first output direction to move the lower sheet to the other side. When the lower detection unit detects that the lower specific end portion does not exist at the lower detection position, the lower pinching roller is rotationally driven in the second output direction opposite to the first output direction to drive the lower sheet. The lower motor control unit that moves to one side and the upper specific end portion at the upper detection position. When the upper detection unit detects that, the upper detection unit is rotationally driven in the third output direction to move the upper sheet to the one side, and the upper detection position does not have the upper specific end portion. When the upper detection unit detects this, the upper motor control unit that rotationally drives the upper holding roller in the fourth output direction opposite to the third output direction to move the upper sheet to the other side. The lower detection position is a position between the discharge port and the lower holding roller in the transport direction, and the upper detection position is such that the transport mechanism sandwiches the lower sheet and the upper sheet in the transport direction. It is characterized in that it is a position between the crimping point where the crimping points are crimped to each other and the discharge port. When the transport mechanism transports the lower sheet and the upper sheet, the lower specific end passes near the lower detection position due to the rotation of the lower holding roller, and the upper specific end passes near the upper detection position due to the rotation of the upper holding roller. pass. The positional relationship between the lower specific end and the upper specific end with respect to the nozzle in a specific direction is unlikely to shift. Therefore, an adhesive device capable of stably transporting the lower sheet and the upper sheet is realized, in which the positional relationship between the end portion of the lower sheet and the end portion of the upper sheet is less likely to shift with respect to the nozzle. The lower detection position at which the lower detection unit detects whether or not there is a lower specific end portion of the lower sheet is a position between the discharge port and the lower holding roller in the transport direction. On the other hand, the upper detection position for detecting whether or not the upper detection portion has the upper specific end portion of the upper sheet is a position between the crimping point and the discharge port in the transport direction. That is, the upper detection position is located on the crimping point side of the discharge port. Therefore, the upper specific end portion of the upper sheet can shorten the distance from the upper detection position to the crimping point, and the upper sheet can be overlapped without shifting to one or the other with respect to the lower sheet at the crimping point.

The upper detection unit of the adhesive device according to claim 2 includes a light emitting unit that emits light, a reflecting unit that reflects light emitted from the light emitting unit, and a light receiving unit that receives reflected light reflected by the reflecting unit. The reflective portion may be provided on the side opposite to the light emitting portion with respect to the upper detection position. When the upper sheet is located at the upper detection position, the upper sheet blocks the light emitted from the light emitting portion, and the light receiving portion does not receive the reflected light. When there is no upper sheet at the upper detection position, the reflecting unit reflects the light emitted from the light emitting unit, and the light receiving unit receives the reflected light. Therefore, the upper detection unit can detect the presence or absence of the upper specific end portion of the upper sheet at the upper detection position by detecting whether or not the light receiving unit has received the reflected light.

It is preferable that the reflective portion of the adhesive device according to claim 3 is located on the downstream side of the discharge port in the upper support portion in the transport direction, and the light emitting portion is located above the reflective portion. The reflective portion is located on the upper support portion of the nozzle on the downstream side in the transport direction with respect to the discharge port. Therefore, the bonding device can bring the nozzle closer to the crimping point side. Therefore, the adhesive device can prevent the lower sheet from shifting in a specific direction while being conveyed to the crimping point after the adhesive is applied to the lower sheet.

The transport mechanism of the bonding device according to claim 4 is arranged on the upper side of the upper sheet at a position where the upper sheet is overlapped with the lower sheet, and is rotatable about a rotation axis extending in a specific direction. The upper roller in contact with the upper surface of the upper sheet is arranged below the lower sheet and facing the upper roller, and is rotatable about a rotation axis parallel to the rotation axis of the upper roller. A lower roller that sandwiches the upper sheet and the lower sheet between the upper roller and the upper roller by contacting the lower surface of the lower sheet is provided, and the upper detection unit has the light emitting unit and the light receiving unit. It is preferable to provide a light-receiving part of the body shape, and to arrange the light-receiving part at a height position equal to or less than the same height as the rotation axis of the upper roller. Since the light emitting / receiving unit is arranged at the same height as the rotation axis of the upper roller or at a height lower than that, the optical axis of the light emitting unit and the surface of the upper roller can be substantially parallel to each other. Therefore, the amount of the reflected light from the upper roller reaching the light receiving portion can be minimized. Therefore, most of the reflected light that reaches the light receiving portion is the reflected light from the reflecting portion, so that the upper specific end portion of the upper sheet can be detected with high accuracy.

The bonding device according to claim 5 includes a light-receiving part support member that extends downward from a position above the upper roller and supports the light-receiving part at a lower end portion, and the light-receiving part support member is the upper part. The arm is provided with an arm extending downward from the position and a fixing portion connected to the lower end of the arm to fix the light receiving / receiving portion, and when the upper roller is viewed from the upstream side in the transport direction, the arm is provided. The portion may be arranged on the specific direction side of the upper roller. Since the arm portion of the light receiving / receiving portion support member is arranged on the specific direction side of the upper roller when the upper roller is viewed from the upstream side in the transport direction, the arm portion is an obstacle when the operator sets the upper sheet. do not become. Therefore, the upper specific end of the upper sheet can be easily seen, and workability is improved.

The upper support portion of the adhesive device according to claim 6 may have a recessed portion that is recessed downward, and the reflective portion may be arranged in the recessed portion. Since the reflective portion is arranged in the recess in which the upper support portion is recessed downward, the reflective portion does not interfere with the transportation of the upper sheet supported by the upper support portion. Therefore, the adhesive device can convey the upper sheet more stably.

The reflective portion of the adhesive device according to claim 7 may be a reflective member that returns and reflects the light emitted from the light emitting portion. Since the reflecting unit is a reflecting member that retroreflects light, the light can be reflected in the same direction as the emitted light even if the reflecting member is not orthogonal to the light emitted from the light emitting unit. Therefore, even in a narrow place where the upper holding roller, the nozzle, the upper roller, and the like are collectively arranged, the upper detection unit can accurately detect the upper specific end portion of the upper sheet.

The inventions of claims 1 to 7 described above can be arbitrarily combined. For example, not all or part of claim 1 may be provided, but at least one of the other claims 2 to 7 may be provided. However, in particular, it is preferable to include the configuration of claim 1 and to include at least one configuration and combination of claims 2 to 7. Further, any of the components of claims 1 to 7 may be extracted and combined. The applicant of the present application intends to obtain a patent right for such a configuration.

The whole perspective view of the cloth adhesive apparatus 1. The whole perspective view which shows the internal structure of the cloth adhesive apparatus 1. The left side view of the cloth adhesive device 1. The partially enlarged view in the W1 region shown in FIG. Left side view of the cloth adhesive device 1 (nozzle lever omitted). The partially enlarged view in the W2 region shown in FIG. Enlarged view from the left around the nozzle 24. Front view of the cloth adhesive device 1. The partially enlarged view in the W3 region shown in FIG. An overall perspective view of the cloth adhesive device 1 as viewed from diagonally rear left (the upper transport mechanism portion is omitted). The partially enlarged view in the W4 region shown in FIG. The block diagram which shows the electric structure of the cloth adhesive apparatus 1. Flow chart of main processing. Flow chart of bonding process.

An embodiment of the present invention will be described with reference to the drawings. The following explanation uses left and right, front and back, and up and down indicated by arrows in the figure.

The cloth adhesive device 1 shown in FIG. 1 adheres two sheets with an adhesive. The two sheets are, for example, an upper cloth 7 and a lower cloth 8. The upper cloth 7 overlaps the lower cloth 8 from above. The cloth adhesive device 1 adheres, for example, the lower specific end portion 8A, which is the right end portion of the lower cloth 8, and the upper specific end portion 7A, which is the left end portion of the upper cloth 7, via an adhesive. The cloth bonding device 1 conveys the upper cloth 7 and the lower cloth 8 in the rear direction. The rear direction is the downstream side in the transport direction, and the front direction is the upstream side in the transport direction.

The configuration of the cloth bonding device 1 will be described with reference to FIGS. 1 to 11. As shown in FIGS. 1 and 2, the cloth bonding device 1 includes a pedestal portion 2, a pedestal portion 3, an arm portion 4, a head portion 5, and a lower transport device 50. The pedestal portion 2 has a substantially rectangular parallelepiped shape and is installed on a workbench (not shown). The pedestal portion 3 is a columnar shape extending 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 head 5 projects to the left from the left end of the arm 4. The pedestal portion 2 is provided with a fixed surface 2A at the lower part of the left surface. The fixed surface 2A is a plane facing to the left and parallel to the vertical direction. The lower transfer device 50 is detachably fixed to the fixing surface 2A. The lower transfer device 50 cooperates with the upper transfer mechanism unit 10 described later, superimposes the upper cloth 7 and the lower cloth 8 and conveys them backward, and controls the position of the lower cloth 8 in the left-right direction.

The lower transport device 50 is a so-called "cylindrical type" having an elongated tubular tip portion extending substantially horizontally from the upstream side to the downstream side in the transport direction. For example, when making a T-shirt, two pieces of cloth are put side by side, but the cloth ends up in a tubular state. Armpit alignment is the work of adhering and adhering adjacent ends of two pieces of cloth together. Since the tip of the lower transport device 50 has an elongated tubular shape, the operator can handle the dough at the tip of the lower transport device 50. Therefore, the lower transfer device 50 is suitable for forming a tubular dough by adhering the ends of two pieces of cloth to each other.

The head portion 5 includes an upper transport mechanism portion 10, a nozzle lever swing mechanism portion 20, and a mounting portion 30. The upper transport mechanism unit 10 cooperates with the lower transport device 50 to superimpose the upper cloth 7 and the lower cloth 8 and transport the lower cloth 7 to the rear. The nozzle lever swing mechanism portion 20 supports the nozzle lever 23 so as to be swingable in the front-rear direction. The nozzle lever 23 extends in an arm shape in the vertical direction, and is provided with a nozzle 24 (see FIGS. 3 and 4) at the lower end. The nozzle 24 ejects the adhesive to the lower cloth 8 before the upper cloth 7 overlaps. The mounting portion 30 mounts the cartridge containing the adhesive in a detachable manner. The arm portion 4 includes an upper holding unit 40, a supply mechanism portion 35, and an upper sensor portion 85. The upper holding unit 40 controls the position of the upper cloth 7 to be conveyed rearward in the left-right direction. The supply mechanism unit 35 supplies the adhesive of the cartridge mounted on the mounting unit 30 to the nozzle 24.

The configuration of the upper transport mechanism unit 10 will be described. As shown in FIGS. 2 to 4, the upper transport mechanism portion 10 is provided on the lower rear portion of the head portion 5. The upper transfer mechanism unit 10 includes a support arm 11, an upper transfer roller 12, an upper transfer motor 14, an arm air cylinder 15 (see FIG. 12), and the like. As shown in FIGS. 3 and 4, the support arm 11 extends from the rear to the front below the head 5, and further bends and extends diagonally forward and downward. The support arm 11 is swingably supported by the head 5. The support arm 11 rotatably supports the upper transfer roller 12 at the lower end thereof about the rotation shaft 12A. The rotation shaft 12A extends in the left-right direction. The upper transfer motor 14 (see FIG. 3) is provided at the rear end of the support arm 11. The upper transfer motor 14 is connected to the upper transfer roller 12 via a transmission mechanism provided inside the support arm 11. Therefore, the upper transfer roller 12 is rotated by the power of the upper transfer motor 14.

The arm air cylinder 15 (see FIG. 12) is provided on the head 5. The support arm 11 swings in the vertical direction by the drive of the arm air cylinder 15. As the arm air cylinder 15 swings the support arm 11, the upper transfer roller 12 moves between the holding position and the retracting position. The upper transport roller 12 at the pinching position sandwiches the lower cloth 8 and the upper cloth 7 between the lower transport roller 64 (see FIG. 4) described later. The upper transport roller 12 in the retracted position retracts upward from the upper cloth 7.

The configuration of the nozzle lever swing mechanism unit 20 will be described. As shown in FIG. 2, the nozzle lever swing mechanism portion 20 is provided on the left side inside the head portion 5. The nozzle lever swing mechanism unit 20 includes a nozzle motor 21, a support shaft (not shown), a nozzle lever 23, and a nozzle 24 (FIGS. 4, 10, and 11). The nozzle motor 21 is a pulse motor provided on the left side inside the head 5. The nozzle motor 21 includes an output shaft to which a worm (not shown) is fixed. The support shaft has a tubular shape extending in the left-right direction above the worm, and supports the nozzle lever 23 so as to be swingable. The support shaft supports a worm wheel (not shown) that meshes with the upper end of the worm. The support shaft is rotated by the power of the nozzle motor 21 together with the worm wheel.

The nozzle lever 23 is provided on the left side of the worm wheel and extends downward from the left end of the support shaft. The lower end of the nozzle lever 23 is located on the upstream side in the transport direction with respect to the upper transport roller 12 (see FIGS. 4 and 11). The nozzle lever 23 has a flow path inside and communicates with the inside of the support shaft. The nozzle lever 23 includes a heater 132 (see FIG. 12) inside in the vicinity of the flow path. The heater 132 warms the flow path to prevent the adhesive from solidifying and enhances the fluidity. The nozzle 24 is detachably attached to the lower end of the nozzle lever 23. Driven by the nozzle motor 21, the nozzle lever 23 swings, and the nozzle 24 moves between an approaching position approaching the upper transport roller 12 and a retracting position on the upstream side in the transport direction from the approaching position. The adhesive supplied by the supply mechanism unit 35 flows inside the support shaft.

As shown in FIGS. 6 and 11, the nozzle 24 includes a flow path shaft portion 25 and an upper support portion 26. The flow path shaft portion 25 projects diagonally downward with respect to the rear from the lower end portion of the nozzle lever 23. The flow path shaft portion 25 has a flow path inside and communicates with the flow path of the nozzle lever 23. The upper support portion 26 bends to the right from the lower end portion of the flow path shaft portion 25 and extends substantially horizontally. The upper support portion 26 has a rod shape having a substantially triangular shape when viewed from the left side. The upper support portion 26 has a flow path 261 inside and communicates with the flow path of the flow path shaft portion 25. The upper support portion 26 is provided with a discharge port 27 (see FIG. 6) at a portion on the bottom portion on the upstream side in the transport direction. The discharge port 27 communicates with the flow path 261 and opens downward. Therefore, the adhesive flowing through the flow path 261 is discharged downward from the discharge port 27.

As shown in FIGS. 7 and 11, the upper support portion 26 is provided with a slope 26A on the upper rear side. The slope 26A is a surface that inclines downward from the upper end portion toward the rear. The upper support portion 26 is provided with a recess 26B in the central portion in the left-right direction of the slope 26A. The recess 26B is a rectangular portion in a plan view that is recessed downward. The bottom surface of the recess 26B is a substantially horizontal plane. The recess 26B is located on the downstream side in the transport direction with respect to the discharge port 27. The upper support portion 26 fixes the reflector 28 to the bottom surface of the recess 26B. The reflector 28 recursively reflects the light emitted from the upper light emitting unit 85A (see FIG. 12) of the upper sensor unit 85, which will be described later, toward the upper light receiving unit 85B (see FIG. 12) of the upper sensor unit 85.

The configuration of the mounting portion 30 will be described. As shown in FIGS. 1 and 2, the mounting portion 30 is provided at substantially the center of the head 5, and includes a cover 31A, an accommodating portion 31B, a lid 31C, and a heater 131 (see FIG. 12). The cover 31A has a substantially rectangular parallelepiped box shape and extends upward from the upper surface of the head 5. The cover 31A opens in the vertical direction. The accommodating portion 31B is provided inside the cover 31A. The accommodating portion 31B has a substantially rectangular parallelepiped box shape and extends from the inside of the head 5 to the upper end of the cover 31A. The accommodating portion 31B opens upward. The accommodating portion 31B detachably accommodates a cartridge (not shown) inside. The lid 31C is detachably provided on the upper side of the accommodating portion 31B to open and close the upper opening of the accommodating portion 31B. The cartridge contains a heat-meltable adhesive. When the adhesive is heated to a predetermined temperature, it liquefies and solidifies at a temperature lower than the predetermined temperature. The heater 131 is provided in the accommodating portion 31B. The heater 131 heats the cartridge housed in the housing section 31B. The adhesive melts and liquefies when the heater 131 is heated.

The configuration of the upper holding unit 40 will be described. As shown in FIGS. 2 and 8, the upper holding unit 40 is provided on the lower surface of the arm portion 4. The upper holding unit 40 includes an upper arm 41, an upper holding roller 42, a rotating shaft 43, an upper motor 48 (see FIG. 12), a spring 47, an upper air cylinder 49, and the like. The upper arm 41 extends downward and to the left from the right side of the lower surface of the arm 4, and is arm-shaped and tubular. The right end portion of the upper arm 41 is rotatably supported around the axis P (see FIG. 2) on the left side portion of the lower surface of the arm portion 4. The tip end portion (lower end portion) of the upper arm 41 is arranged on the upstream side in the transport direction of the nozzle 24 located at the approaching position. The rotating shaft 43 projects rearward from the tip of the upper arm 41, and the front-rear direction is the axial direction. The upper holding roller 42 is fixed to the rear end portion of the rotating shaft 43, and can rotate together with the rotating shaft 43 in the front-rear direction as an axial direction. The upper motor 48 is a motor capable of forward and reverse rotation. The upper motor 48 includes a power transmission mechanism inside the upper arm 41. The power transmission mechanism includes, for example, a pair of pulleys and an endless belt (not shown). One pulley is fixed to the output shaft of the upper motor 48, and the other pulley is fixed to the rotating shaft 43 of the upper holding roller 42. The endless belt is bridged between a pair of pulleys. Therefore, the power transmission mechanism can transmit the power of the upper motor 48 to the upper holding roller 42 and rotate the upper holding roller 42 in the forward and reverse directions.

The upper arm 41 rotates about the axis P between the contact position and the separation position. The contact position is the rotation position of the upper arm 41 at which the lower end of the upper holding roller 42 is at the same height as the upper surface of the upper cloth plate 90 described later. The separation position is the rotation position of the upper arm 41 at which the lower end of the upper holding roller 42 is separated above the upper surface of the upper cloth plate 90. The spring 47 constantly urges the upper arm 41 clockwise in the front view around the axis P via another member. Therefore, the spring 47 constantly urges the upper arm 41 in the rotation direction from the contact position to the separation position. The upper arm 41 exerts an urging force whose tip portion rotates in the direction toward the contact position due to the weight of the upper arm 41 and the upper holding roller 42 and the like. Since the spring 47 urges the upper arm 41 in the rotation direction toward the separation position against the urging force, the spring 47 suppresses the excessive force of the upper arm 41 toward the contact position. The upper air cylinder 49 rotates the upper arm 41 from the contact position to the separated position by driving the upper arm 41 clockwise around the axis P.

The structure of the supply mechanism unit 35 will be described. As shown in FIG. 2, the supply mechanism portion 35 is provided inside the right end side of the arm portion 4. The supply mechanism unit 35 supplies the adhesive of the cartridge stored in the storage unit 31B to the nozzle 24. The supply mechanism unit 35 includes a pump motor 36 and a gear pump 37. The pump motor 36 is provided inside the arm portion 4 and includes an output shaft 36A. The gear pump 37 is provided on the front side of the mounting portion 30 and is connected to the right end portion of the support shaft of the nozzle lever 23. The output shaft 36A is connected to the gear pump 37 via the gear 38. The gear pump 37 sucks the adhesive from the cartridge housed in the housing section 31B. The gear pump 37 supplies the sucked adhesive to the nozzle 24 via the support shaft and the flow path in the nozzle lever 23.

The upper sensor unit 85 and its support structure will be described. The upper sensor unit 85 is an optical sensor in which an upper light emitting unit 85A and an upper light receiving unit 85B (see FIG. 12) are integrated. As shown in FIGS. 6, 9, and 11, the upper sensor portion 85 is supported between the upper transport roller 12 and the upper holding roller 42 by the support arm portion 500 and the sensor support member 81. The support arm portion 500 is formed in the shape of an elongated plate, and extends downward while being curved so as to be convex forward from the lower surface of the arm portion 4. The support arm portion 500 is provided with a pair of fixing holes 501 (see FIG. 11) arranged in the left-right direction at the lower end portion. The sensor support member 81 is detachably fixed to the lower end of the support arm portion 500 with a pair of screws 88.

As shown in FIG. 11, the sensor support member 81 includes a fixing portion 82 and a support portion 83. The fixing portion 82 is a portion for contacting and fixing the front surface of the lower end portion of the support arm portion 500, and is formed in a substantially rectangular plate shape extending in the left-right direction. The fixing portion 82 includes an elongated hole 821 extending in the left-right direction. A metal plate 87 is brought into contact with the front surface of the fixing portion 82, a pair of screws 88 are inserted into a pair of holes (not shown) provided in the metal plate 87, and a support arm portion is inserted through a long hole 821 of the fixing portion 82. Fasten to a pair of fixing holes 501 at the lower end of 500. The head of the screw 88 is locked from the front to the edge of the pair of holes provided in the metal plate 87. Therefore, the fixing portion 82 is fixed to the front surface of the lower end portion of the support arm portion 500 via the metal plate 87.

The support portion 83 includes a lateral protrusion portion 831, an arm portion 832, and a sensor fixing portion 833. The laterally protruding portion 831 is a portion that protrudes to the left from the left end portion of the fixed portion 82. The arm portion 832 is a portion that bends downward from the left end portion of the laterally protruding portion 831 and extends substantially linearly. The sensor fixing portion 833 is a portion that bends and extends to the right from the lower end portion of the arm portion 822, and attaches and supports the upper sensor portion 85. The upper sensor unit 85 fixed to the sensor fixing unit 833 is supported at the same height position as the rotating shaft 12A of the upper transport roller 12 (the height position indicated by the two-dot chain line R in FIG. 6) or at a height position lower than that. do. The upper light emitting unit 85A and the upper light receiving unit 85B are at the same height position as each other. The upper light emitting portion 85A emits light diagonally rearward toward the reflector 28 provided in the recess 26B of the upper support portion 26 of the nozzle 24. The light emitted by the upper light emitting unit 85A is reflected by the reflector 28. The upper light receiving unit 85B receives the reflected light reflected by the reflector 28.

The reflector 28 is preferably a member that regresses and reflects light. Since the reflector 28 is a reflecting member that retroreflects light, even if the reflector 28 is not orthogonal to the light emitted from the upper light emitting portion 85A, the light can be reflected in the same direction as the emitted light. Therefore, the upper sensor unit 85 can accurately detect the upper specific end portion 7A of the upper cloth 7 even in a narrow place where the upper holding roller 42, the nozzle 24, the upper transport roller 12, and the like are collectively arranged.

For example, when the upper specific end portion 7A of the upper cloth 7 is located above the recess 26B, the upper specific end portion 7A blocks the light emitted by the upper light emitting portion 85A. Therefore, the upper light receiving unit 85B does not receive the light emitted by the upper light emitting unit 85A. When the upper specific end portion 7A is not above the recess 26B, the light emitted by the upper light emitting portion 85A is reflected by the reflector 28. The upper light receiving unit 85B receives the reflected light. Therefore, the upper sensor unit 85 can detect whether or not the upper specific end portion 7A is above the recess 26B. The upper position of the recess 26B is the upper detection position where the upper sensor portion 85 detects the upper specific end portion 7A.

As described above, since the upper light emitting portion 85A is supported at the same height position as the rotating shaft 12A of the upper transport roller 12, the optical axis of the upper light emitting portion 85A and the surface of the upper transport roller 12 can be made substantially parallel. Therefore, the light emitted by the upper light emitting unit 85A is reflected by the upper transport roller 12, and the amount of the reflected light reflected by the upper transport roller 12 reaching the upper light receiving unit 85B can be minimized. Therefore, most of the reflected light that reaches the upper light receiving portion 85B is the reflected light from the reflector plate 28, so that the upper specific end portion 7A of the upper cloth 7 can be detected with high accuracy.

In this embodiment, the position of the upper sensor portion 85 in the left-right direction can be adjusted by adjusting the fixed position of the sensor support member 81 in the left-right direction with respect to the support arm portion 500. When the pair of screws 88 is loosened, the fixing portion 82 of the sensor support member 81 can move in the left-right direction within the range of the elongated hole 821 in the length direction. The operator can fix the fixing portion 82 to the lower end portion of the support arm portion 500 and position the upper sensor portion 85 by tightening the pair of screws 88 after determining the position of the upper sensor portion 85 in the left-right direction.

The structure of the lower transfer device 50 will be described. As shown in FIGS. 1 and 2, the lower transport device 50 includes a support plate portion 51, a frame 55, a lower transport mechanism portion 60, and the like. The lower transport mechanism unit 60 (see FIG. 2) is a unit capable of superimposing and transporting the upper cloth 7 and the lower cloth 8 in cooperation with the upper transport mechanism unit 10 and controlling the position of the lower cloth 8 in the left-right direction. Is. The frame 55 (see FIG. 1) is a housing for accommodating the lower transport mechanism portion 60 inside. The support plate portion 51 is a support member that supports the frame 55 and the lower transport mechanism portion 60.

As shown in FIG. 2, the support plate portion 51 includes a vertical plate 52 and a horizontal plate 53. The vertical plate 52 is a plate member that extends in the vertical direction and has a surface direction in the left-right direction. The right surface of the vertical plate 52 is detachably fixed to the fixing surface 2A of the pedestal portion 2. The vertical plate 52 is provided with a slope portion 54 at a portion other than the front side of the left surface. The slope portion 54 has a substantially triangular shape in front view, and has a slope that inclines downward from the upper part to the left side. The slope portion 54 prevents the fabric from being caught by sliding the fabric formed by bonding the upper cloth 7 and the lower cloth 8. The horizontal plate 53 is formed in a substantially L-shape in a plan view (see FIG. 10), and has a portion extending substantially horizontally from the front side portion of the lower end portion of the vertical plate 52 to the left.

As shown in FIG. 1, the frame 55 is fixed to the front side portion of the vertical plate 52 left surface of the support plate portion 51 and the upper surface of the horizontal plate 53 with screws. The frame 55 extends along the transport direction and includes an accommodating portion 551 and an extending portion 552. The accommodating portion 551 is provided on the upstream side in the transport direction, and is formed in a substantially box shape having an open upper portion. The accommodating portion 551 accommodates a plurality of motors of the lower transport mechanism unit 60, which will be described later, inside the accommodating portion 551. The accommodating portion 551 fixes the first cross plate 57 to the upper portion to be opened with screws. The first cross plate 57 is a plate member extending horizontally. The extending portion 552 is formed in an elongated substantially square cylinder extending from the rear portion of the accommodating portion 551 to the downstream side in the transport direction. The upper part of the stretched portion 552 opens. The stretched portion 552 houses the tip portion of the lower transport mechanism portion 60 inside. The tip portion of the lower transport mechanism portion 60 extends rearward and is formed in an elongated shape. The second cross plate 58 is fixed to the upper portion of the stretched portion 552 with a screw. The second cross plate 58 is a substantially rectangular plate member that is long in the front-rear direction in a plan view. The stretched portion 552 has an opening 553 (see FIG. 11) at the tip extending rearward. The tip portion of the lower transport mechanism portion 60 projects rearward from the opening 553 of the stretched portion 552 and is exposed.

The structure of the lower transport mechanism unit 60 will be described. As shown in FIG. 2, the lower transfer mechanism unit 60 includes a support frame 61, a swing shaft 62, a lower transfer motor 63, a lower transfer roller 64 (see FIGS. 6 and 11), and a nozzle lower roller 65 (FIGS. 6 and 11). (See), a conveyor belt 67, a nozzle clearance adjusting motor 68, a lower holding unit 70, a lower sensor unit 78 (see FIGS. 6 and 12), and the like.

The support frame 61 has a substantially U-shape that extends parallel to the transport direction and has a cross section orthogonal to the length direction that opens upward. The support frame 61 includes a right plate portion 61A, a left plate portion 61B, and a bottom plate portion 61C. The right plate portion 61A is a plate portion that stands upright in the vertical direction, and is formed in a substantially L-shape in the right side view, which extends parallel to the transport direction and the upstream portion in the transport direction bends downward in a substantially L-shape. .. The right plate portion 61A is provided with a circular through hole 63A on the front end side, and is provided with a substantially rectangular cam hole 63B below the circular through hole 63A. The drive shaft (not shown) of the lower transfer motor 63 is inserted into the through hole 63A. In the cam hole 63B, a cam plate 69, which will be described later, is arranged inside. The left plate portion 61B is a plate portion that stands parallel to the right plate portion 61A, has a shorter length in the front-rear direction than the right plate portion 61A, and is conveyed on the front end side (rear end side) of the support frame 61. It is formed in an elongated rectangular shape on the left side, which extends parallel to the direction. The bottom plate portion 61C is a plate portion that connects the rear side portions of the lower end portions of the right plate portion 61A and the left plate portion 61B substantially horizontally, and is formed in a substantially rectangular shape in the bottom view.

The swing shaft 62 penetrates and is fixed in the left-right direction between the right plate portion 61A and the left plate portion 61B at a substantially intermediate portion in the length direction of the support frame 61. The left and right ends of the swing shaft 62 project to the left and right sides of the right plate portion 61A and the left plate portion 61B, respectively. Both ends of the swing shaft 62 are rotatably inserted into holes (not shown) provided in both the left and right wall portions of the extended portion 552 of the frame 55 (see FIG. 1). Therefore, the support frame 61 of the lower transport mechanism unit 60 can swing about the swing shaft 62 with respect to the frame 55.

The lower transfer motor 63 is fixed to the front end side portion of the right side plate portion 61A of the support frame 61. The drive shaft (not shown) of the lower transfer motor 63 projects to the left from the right surface of the right plate portion 61A. The drive shaft is inserted into the through hole 63A provided in the right plate portion 61A and protrudes inside the support frame 61.

The lower transfer roller 64 rotatably supports the inside of the tip of the support frame 61. The rotating shaft 64A of the lower transfer roller 64 extends in the left-right direction and is rotatably inserted into the holes provided in the right plate portion 61A and the left plate portion 61B (see FIG. 6). The lower transfer roller 64 is arranged directly below the upper transfer roller 12 and can come into contact with the upper transfer roller 12 from below.

The nozzle lower roller 65 rotatably supports the inside of the tip of the support frame 61 and upstream of the lower transport roller 64 in the transport direction. The rotation shaft 65A of the roller under the nozzle 65 extends in the left-right direction, and is rotatably inserted into the holes provided in the right plate portion 61A and the left plate portion 61B (see FIG. 6). The nozzle lower roller 65 is arranged below the discharge port 27 provided at the bottom of the upper support portion 26 of the nozzle 24.

The transport belt 67 is bridged between the drive shaft and the rotary shafts 64A and 65A 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 together.

The nozzle clearance adjusting motor 68 is fixed to a portion of the support plate portion 51 extending to the left on the front side of the upper surface of the horizontal plate 53. The drive shaft 68A of the nozzle 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 68A. The cam plate 69 is arranged inside the cam hole 63B provided in the right plate portion 61A of the support frame 61. The spring (not shown) urges the support frame 61 in a direction in which the tip end side of the support frame 61 swings downward. Therefore, the cam plate 69 comes into contact with the lower edge portion of the cam hole 63B. When the cam plate 69 is rotated by driving the nozzle 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 nozzle clearance adjusting motor 68 adjusts the nozzle clearance by moving the tip of the lower transfer mechanism portion 60 up and down. The nozzle gap is a gap between the discharge port 27 of the nozzle 24 and the roller under the nozzle 65 (see FIG. 4), which will be described later.

The lower sandwiching unit 70 is a unit capable of controlling the position of the lower cloth 8 in the left-right direction while sandwiching the lower cloth 8 with the lower surface of the upper cloth plate 90 described later. As shown in FIG. 2, the lower holding unit 70 includes a fixed base portion 71, a lower motor 72, a support frame portion 73, a rotating shaft 75, a lower holding roller 76, and the like. The fixing base portion 71 is formed in a substantially rectangular parallelepiped shape, and is fixed to the inner portion of the accommodating portion 551 of the frame 55. The fixed base portion 71 has a circular through hole (not shown) penetrating in the front-rear direction, and the rotating portion 717 is rotatably held inside the through hole. The lower motor 72 is fixed to the front surface of the rotating portion 717. Therefore, the lower motor 72 rotates integrally with the rotating portion 717 with respect to the fixed base portion 71. Therefore, the fixed base portion 71 rotatably supports the lower motor 72 together with the rotating portion 717. The drive shaft (not shown) of the lower motor 72 is inserted into a through hole (not shown) provided in the center of the rotating portion 717, and is connected to the connecting shaft (not shown). The connecting shaft projects rearward from the rear surface of the rotating portion 717. The support frame portion 73 is arranged behind the fixed 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 support frame portion 73 accommodates the rear end portion of the connecting shaft connected to the drive shaft of the lower motor 72 inside. The rotation shaft 75 is arranged inside the support frame 61 and extends parallel to the transport direction. A belt 74 is hung between the connecting shaft and the rotating shaft 75. The support frame portion 73 rotatably supports the rear end portion of the rotating shaft 75. The lower holding roller 76 is fixed to the rear end portion of the rotating shaft 75. The lower holding roller 76 is arranged below the upper holding roller 42. When the lower motor 72 is driven, the rotary shaft 75 rotates via the drive shaft, the connecting shaft, and the belt. Therefore, the lower holding roller 76 rotates integrally with the rotating shaft 75 around the rotating shaft 75.

The fixed base 71 is provided with a lower air cylinder 711 on the upper surface. The lower motor 72 is provided with a pin 712 at the rear of the upper surface. The pin 712 projects upward. The lower air cylinder 711 abuts on the pin 712 from the left. The lower motor 72 fixes one end of the tension spring 715 to the rear part of the left surface. The tension spring 715 extends downward and the other end is fixed to the inner portion of the accommodating portion 551 of the frame 55. The tension spring 715 constantly urges the lower motor 72 in the counterclockwise direction when viewed from the front. When the lower air cylinder 711 is driven and the pin 712 is pushed to the right, the lower motor 72 rotates clockwise in the front view against the urging force of the tension spring 715. Therefore, the lower holding unit 70 rotates clockwise with respect to the fixed base 71, and the lower holding roller 76 moves to the lower position. The lower position is the position of the lower holding roller 76 that is separated downward from the lower surface of the upper cloth plate 90, which will be described later.

When the lower air cylinder 711 is driven and the pin 712 is moved to the left, the lower motor 72 is rotated counterclockwise in the front view by the urging force of the tension spring 715. Therefore, the lower holding unit 70 rotates counterclockwise with respect to the fixed base portion 71, and the lower holding roller 76 moves to the upper position. The upper position is the position of the lower holding roller 76 that has moved upward until it comes into contact with the lower surface of the upper cloth plate 90 by the urging force of the tension spring 715.

As shown in FIG. 11, in the lower transport mechanism portion 60 having the above configuration, the support frame 61 fixes the tip plate 56 to the tip portion that opens rearward. The tip plate 56 is arranged in a state of being inclined downward from the upper end portion to the rear. The tip plate 56 is provided with a rectangular notch-shaped recess 55A at the upper end thereof. The support frame 61 fixes the nozzle plate 59 to the upper rear portion that opens upward. The nozzle plate 59 extends substantially parallel to the transport direction. The nozzle plate 59 is arranged so as to be directly below the discharge port 27 of the nozzle 24 and adjacent to the rear of the second cross plate 58 fixed to the frame 22. The nozzle plate 59 is provided with a rectangular opening 59A directly below the discharge port 27. The roller under the nozzle 65 is arranged inside the opening 59A, and the upper portion thereof projects upward. The nozzle plate 59 is provided with a rectangular notch-shaped recess 59B at the rear end. The recesses 55A and 59B face each other in the front-rear direction and form a rectangular opening in the center thereof. The lower transfer roller 64 is arranged inside the opening, and the upper portion thereof projects upward. The nozzle plate 59 is provided with a through hole (not shown) at a position directly above the lower sensor portion 78 provided inside the support frame 61, which will be described later.

As shown in FIGS. 6 and 11, the stretched portion 552 of the frame 55 rotatably attaches the upper cloth plate 90 to the fixed shaft portion 91 at the right rear corner portion of the upper surface of the second cross plate 58. The upper cloth plate 90 is a plate member having a substantially rectangular shape in a plan view. The upper cloth plate 90 is rotatable in the horizontal direction between the operating position and the retracted position around the fixed shaft portion 91. The upper cloth plate 90 positioned at the operating position is located directly below the upper holding roller 42 and directly above the lower holding roller 76. The upper cloth holding roller 42 can hold the upper cloth 7 between the upper cloth plate 90 and the upper surface of the upper cloth plate 90. The lower holding roller 76 can hold the lower cloth 8 between the lower cloth plate 90 and the lower surface of the upper cloth plate 90. A reflector 95 is attached to the lower surface of the upper cloth plate 90. When the upper cloth plate 90 is positioned at the operating position, the reflector 95 is located directly above the through hole (not shown) provided in the nozzle plate 59.

The lower sensor portion 78 is arranged inside the support frame 61 and below the through hole (not shown) provided in the nozzle plate 59. The lower sensor unit 78 is an optical sensor in which a lower light emitting unit 78A and a lower light receiving unit 78B (see FIG. 12) are integrated. The lower light emitting portion 78A and the lower light receiving portion 78B are at the same height position as each other. The lower light emitting unit 78A emits light toward the through hole of the nozzle plate 59. The light that has passed through the through hole is reflected by the reflector 95 fixed to the lower surface of the upper cloth plate 90. The reflector 95 is preferably a member that regresses and reflects light. The reflected light reflected from the reflector 95 passes through the through hole. The lower light receiving unit 78B can receive light that has passed through the through hole.

For example, when the lower specific end 8A of the lower cloth 8 is above the through hole of the nozzle plate 59, the lower specific end 8A blocks the light emitted by the lower light emitting unit 78A. Therefore, the lower light receiving unit 78B does not receive the light emitted by the lower light emitting unit 78A. When the lower specific end portion 8A is not above the through hole, the light emitted by the lower light emitting portion 78A is reflected by the reflector 95. The lower light receiving portion 78B receives the reflected light through the through hole. Therefore, the lower sensor unit 78 can detect whether or not the lower specific end portion 8A is above the through hole. The through hole of the nozzle plate 59 is a lower detection position where the lower sensor unit 78 detects the lower specific end portion 8A.

With reference to FIG. 12, the electrical configuration of the cloth bonding device 1 will be described. The cloth 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, and drive circuits 105 and 106. The CPU 101 controls the operation of the cloth bonding device 1 in an integrated manner. The CPU 101 is connected to a ROM 102, a RAM 103, a storage device 104, an operation unit 19, a tread plate 18, a lower sensor unit 78, an upper sensor unit 85, drive circuits 105, 106, and heaters 131, 132. 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 operation unit 19 includes a switch, a knee switch, an information input unit, and the like. The switch is provided at the lower part of the front surface of the head 5. The knee switch is provided at the bottom of the workbench and is operated by the operator's knee. The operator operates the operation unit 19 to input various instructions to the cloth bonding device 1. The operation unit 19 outputs information indicating various instructions to the CPU 101 as a detection result. The tread 18 is provided at the bottom of the workbench and is operated by the operator's feet. The operator inputs an instruction to start or end bonding, which will be described later, via the tread plate 18. The tread plate 18 outputs information indicating an adhesion start instruction or an adhesion end instruction to the CPU 101 as a detection result. The lower sensor unit 78 and the upper sensor unit 85 output the detection result to the CPU 101.

By transmitting a control signal to the drive circuit 105, the CPU 101 drives and controls each of the lower transfer motor 63, the upper transfer motor 14, the nozzle motor 21, the pump motor 36, the nozzle clearance adjusting motor 68, the lower motor 72, and the upper motor 48. do. The CPU 101 drives and controls each of the arm air cylinder 15, the lower air cylinder 711, and the upper air cylinder 49 by transmitting a control signal to the drive circuit 106. The CPU 101 drives the heaters 131 and 132.

The main process will be described with reference to FIG. For example, the operator inputs an instruction to start the main process in the operation unit 19. The CPU 101 reads a program for starting the main process from the ROM 102 and starts the main process. Before the start of the main treatment, the cloth bonding device 1 is in the initial state. When the cloth bonding device 1 is in the initial state, the nozzle 24 is in the approaching position, the upper transfer roller 12 is in the holding position, the upper arm 41 is in the contact position, and the lower holding roller 76 is in the upper position. The CPU 101 performs an initialization process (S10). In the initialization process, the CPU 101 drives the heaters 131 and 132.

The CPU 101 determines whether or not the roller movement instruction has been detected based on the detection result of the operation unit 19 (S11). The roller movement instruction is an instruction to move the upper transfer roller 12, the upper holding roller 42, and the lower holding roller 76, respectively. The CPU 101 returns to S11 and waits until the roller movement instruction is detected (S11: NO). When the roller movement instruction is detected (S11: YES), the CPU 101 drives and controls the upper air cylinder 49 (see FIG. 12) to raise the upper transport roller 12 (S12). The upper transport roller 12 rises from the pinching position to the retracting position.

The CPU 101 drives and controls the lower air cylinder 711, and lowers the lower holding roller 76 (S13). When the lower air cylinder 711 moves the pin 712 to the right, the lower holding unit 70 rotates clockwise in the front view, and the rotating shaft 75 and the lower holding roller 76 are lowered. Therefore, the lower holding roller 76 moves from the upper position to the lower position. The lower holding roller 76 is separated downward from the lower surface of the upper cloth plate 90. The CPU 101 drives and controls the upper air cylinder 49 and raises the upper holding roller 42 (S14). The upper arm 41 rotates from the contact position to the separated position. The upper holding roller 42 is separated upward from the upper surface of the upper cloth plate 90.

The CPU 101 determines whether or not the nozzle displacement instruction has been detected based on the detection result of the operation unit 19 (S15). The nozzle displacement instruction is an instruction to displace the nozzle 24 between the approach position and the retracted position. The CPU 101 returns to S15 and waits until the nozzle displacement instruction is detected (S15: NO).

During the standby, the operator rotates the upper cloth plate 90 counterclockwise in a plan view and moves it from the operating position to the retracted position. When the operator inputs the nozzle displacement instruction to the operation unit 19 (S15: YES), the CPU 101 drives and controls the nozzle motor 21 to move the nozzle lever 23 toward the front side, and displaces the nozzle 24 from the approach position to the retracted position. (S16). The CPU 101 inputs a predetermined pulse signal as a control signal to the drive circuit 105, so that the nozzle 24 is displaced to the retracted position. Since the upper cloth plate 90 is in the retracted position, the nozzle 24 is displaced to the retracted position without contacting the upper cloth plate 90. When the nozzle 24 reaches the retracted position, the nozzle motor 21 is driven and stopped.

The CPU 101 determines whether or not the nozzle displacement instruction has been detected based on the detection result of the operation unit 19 (S17). The CPU 101 returns to S17 and waits until the nozzle displacement instruction is detected (S17: NO). During the standby, the operator places the lower cloth 8 on the nozzle plate 59 and the second cross plate 58. Both the lower transfer roller 64 and the nozzle lower roller 65 come into contact with the lower cloth 8 from below. When the operator on which the lower cloth 8 is placed inputs a nozzle displacement instruction to the operation unit 19 (S17: YES), the CPU 101 drives and controls the nozzle motor 21 to displace the nozzle 24 from the retracted position to the approaching position (S18). ). When the CPU 101 inputs a predetermined pulse signal as a control signal to the drive circuit 105, the nozzle 24 is displaced to the approaching position. The discharge port 27 faces the lower cloth 8 from above.

The CPU 101 executes the gap adjustment process (S19). The gap adjusting process is a process of moving the tip of the lower transfer mechanism portion 60 up and down to adjust the nozzle gap, which is the gap between the nozzle 24 discharge port 27 and the nozzle lower roller 65. For example, an operator inputs an instruction to raise or lower the nozzle plate 59 to the operation unit 19. The CPU 101 drives and controls the nozzle clearance adjusting motor 68 (see FIG. 12) to swing the lower transfer mechanism unit 60 according to the detection result of the operation unit 19, and moves the nozzle plate 59 up and down. The operator operates the operation unit 19 so that the nozzle gap becomes appropriate. At this time, the upper cloth plate 90 is in the retracted position, and the upper cloth 7 is not placed on the nozzle plate 59 and the second cross plate 58. Therefore, the operator can easily visually recognize the vertical distance between the nozzle plate 59 and the discharge port 27. When the operator inputs the end instruction of the gap adjustment process to the operation unit 19, the CPU 101 shifts the process to S20.

The CPU 101 determines whether or not the roller movement instruction has been detected based on the detection result of the operation unit 19 (S20). The CPU 101 returns to S20 and waits until the roller movement instruction is detected (S20: NO). During the standby, the operator rotates the upper cloth plate 90 clockwise in a plan view and moves from the standby position to the operating position. The operator places the upper cloth 7 on the nozzle plate 59, the upper support portion 26 of the nozzle 24, the upper cloth plate 90, and the second cross plate 58.

Here, as described above, the sensor support member 81 that supports the upper sensor portion 85 is located on the front side of the upper transport roller 12. As shown in FIGS. 8 and 9, when the upper transfer roller 12 is viewed from the upstream side in the transfer direction, the arm portion 832 of the sensor support member 81 is located on the left side of the upper transfer roller 12. Therefore, when the operator places and sets the upper cloth 7, the gap between the lower portion of the upper transfer roller 12 and the upper surface of the nozzle plate 59 is not hidden by the arm portion 832 and does not get in the way. Therefore, in the lower portion of the upper transport roller 12, the upper specific end portion 7A of the upper cloth 7 is easily visible, so that the workability when the upper cloth 7 is placed and set is improved. The upper cloth 7 overlaps the lower cloth 8 from above between the lower cloth roller 64 and the upper cloth roller 12. After placing the upper cloth 7, the operator inputs a roller movement instruction to the operation unit 19. When the roller movement instruction is detected (S20: YES), the CPU 101 drives and controls the arm air cylinder 15 and lowers the upper transfer roller 12 to the holding position (S21). The upper transfer roller 12 sandwiches the lower cloth 8 and the upper cloth 7 between the lower transfer roller 64.

The CPU 101 drives and controls the lower air cylinder 711 to raise the lower holding roller 76 (S22). When the lower air cylinder 711 moves the pin 712 to the left, the lower motor 72 rotates counterclockwise when viewed from the front due to the urging force of the tension spring 715, and the rotating shaft 75 and the lower holding roller 76 rise. Therefore, the lower holding roller 76 moves from the lower position to the upper position. The lower holding roller 76 sandwiches the lower cloth 8 with the lower surface of the upper cloth plate 90. The CPU 101 drives and controls the upper air cylinder 49 and lowers the upper holding roller 42 (S23). The upper arm 41 moves from the separated position to the contact position. The upper holding roller 42 sandwiches the upper cloth 7 with the upper surface of the upper cloth plate 90. The CPU 101 executes the bonding process (S24).

The bonding process will be described with reference to FIG. The bonding process is a process of adhering the lower specific end portion 8A of the lower cloth 8 and the upper specific end portion 7A of the upper cloth 7 with an adhesive. The CPU 101 determines whether or not the start instruction is detected depending on whether or not the operator operates the tread 18 with his or her foot (S31). The CPU 101 returns to S31 and waits until the start instruction is detected (S31: NO). The start instruction is an instruction to start the bonding operation.

When the operator operates the tread 18 with his / her foot and inputs a start instruction (S31: YES), the CPU 101 drives and controls the upper transfer motor 14 and the lower transfer motor 63, respectively, of the upper transfer roller 12 and the lower transfer roller 64. The drive is started (S32). The upper transfer roller 12 and the lower transfer roller 64 cooperate to transfer the lower cloth 8 and the upper cloth 7 to the rear. The nozzle lower roller 65 rotates together with the lower transport roller 64, and auxiliary transports the lower cloth 8 toward the rear.

The CPU 101 drives and controls the pump motor 36 to start discharging the adhesive (S33). The supply mechanism unit 35 supplies the adhesive to the nozzle 24 by driving the pump motor 36. The discharge port 27 discharges the adhesive toward the lower specific end portion 8A of the lower cloth 8 located below. The upper transfer roller 12, the lower transfer roller 64, and the nozzle lower roller 65 convey the lower cloth 8 and the upper cloth 7 to the rear while the discharge port 27 applies the adhesive to the lower specific end portion 8A.

Based on the detection result of the lower sensor unit 78, the CPU 101 determines whether or not the lower specific end portion 8A is in the lower detection position (S34). When the lower specific end portion 8A is in the lower detection position (S34: YES), the CPU 101 drives and controls the lower motor 72, and rotationally drives the lower holding roller 76 in the first output direction (S35). The first output direction is the rotation direction in which the upper end of the lower holding roller 76 is directed to the left side. The lower holding roller 76 that rotates in the first output direction moves the lower specific end portion 8A to the left side. At this time, the lower specific end portion 8A moves in a direction deviating from the lower detection position. The CPU 101 shifts the process to S37.

When the lower specific end portion 8A is not in the lower detection position (S34: NO). The CPU 101 drives and controls the lower motor 72, and rotationally drives the lower holding roller 76 in the second output direction (S36). The second output direction is opposite to the first output direction. The lower holding roller 76 that rotates in the second output direction moves the lower specific end portion 8A to the right side. At this time, the lower specific end portion 8A moves in a direction approaching the lower detection position. The CPU 101 shifts the process to S37.

The CPU 101 determines whether or not the upper specific end portion 7A is in the upper detection position based on the detection result of the upper sensor unit 85 (S37). Since the reflector 28 that reflects the light of the upper light emitting portion 85A of the upper sensor portion 85 is fixed in the recess 26B provided on the slope 26A of the upper support portion 26 of the nozzle 24, the upper cloth supported by the upper support portion 26. It does not interfere with the transportation of 7. Therefore, the cloth bonding device 1 can convey the upper cloth 7 more stably. When the upper specific end portion 7A is in the upper detection position (S37: YES), the CPU 101 drives and controls the upper motor 48 and rotationally drives the upper holding roller 42 in the third output direction (S38). The third output direction is the rotation direction in which the lower end of the upper holding roller 42 faces to the right. The upper pinching roller 42 that rotates in the third output direction moves the upper specific end portion 7A to the right side. At this time, the upper specific end portion 6A moves in a direction deviating from the upper detection position. The CPU 101 shifts the processing to S40.

When the upper specific end portion 7A is not in the upper detection position (S37: NO), the CPU 101 drives and controls the upper motor 48 and rotationally drives the upper holding roller 42 in the fourth output direction (S39). The fourth output direction is opposite to the third output direction. The upper pinching roller 42 that rotates in the fourth output direction moves the upper specific end portion 7A to the left side. At this time, the upper specific end portion 6A moves in a direction approaching the upper detection position. The CPU 101 shifts the processing to S40.

Based on the detection result of the tread 18, the CPU 101 determines whether or not the instruction to end the bonding process has been detected (S40). If the end instruction of the bonding process is not detected (S40: NO), the CPU 101 returns to S34 and repeats the process. The lower cloth 8 after the adhesive is attached enters between the lower transfer roller 64 and the upper transfer roller 12. The upper transport roller 12 and the lower transport roller 64 press the lower specific end portion 8A and the upper specific end portion 7A against each other with an adhesive to transport the lower specific end portion 8A and the upper specific end portion 7A to the rear. Therefore, the cloth adhesive device 1 adheres the lower specific end portion 8A and the upper specific end portion 7A via an adhesive.

When the CPU 101 repeatedly executes S34 to S39, the lower sandwiching roller 76 is rotationally driven in the first output direction or the second output direction. For example, when the lower specific end portion 8A curves to the left front side, the lower specific end portion 8A passes through the left side of the lower detection position as the lower cloth 8 moves backward (S34: NO). The CPU 101 rotationally drives the lower holding roller 76 in the second output direction (S36). Therefore, even when the lower specific end portion 8A is curved to the left front side, the cloth adhesive device 1 can suppress the displacement of the positional relationship between the lower specific end portion 8A passing below the discharge port 27 and the discharge port 27 in the left-right direction.

When the lower specific end portion 8A extends linearly in the front-rear direction, the CPU 101 rotationally drives the lower holding roller 76 alternately in the first output direction and the second output direction (S34: YES, S35, S34: NO, S36). ). Therefore, the cloth adhesive device 1 can suppress the displacement of the positional relationship between the lower specific end portion 8A passing below the discharge port 27 and the discharge port 27 in the left-right direction.

When the CPU 101 repeatedly executes S34 to S39, the upper holding roller 42 is rotationally driven in the third output direction or the fourth output direction. When the upper specific end portion 7A curves to the right front side, the upper specific end portion 7A passes to the right side of the upper detection position as the upper cloth 7 moves backward (S37: NO). The CPU 101 rotationally drives the upper holding roller 42 in the fourth output direction (S39). Therefore, the cloth adhesive device 1 can suppress the displacement of the positional relationship between the upper specific end portion 7A passing through the upper support portion 26 and the discharge port 27 in the left-right direction.

When the upper specific end portion 7A extends linearly in the front-rear direction, the CPU 101 rotationally drives the upper holding roller 42 alternately in the third output direction and the fourth output direction (S37: YES, S38, S37: NO, S39). Therefore, the cloth bonding device 1 can suppress the displacement of the positional relationship between the upper specific end portion 7A passing through the upper support portion 26 and the discharge port 27 in the left-right direction.

By repeatedly executing S34 to S39 by the CPU 101, the cloth adhesive device 1 can adjust the positions of the lower specific end portion 8A and the upper specific end portion 7A passing through the nozzle 24 in the left-right direction. Therefore, the left-right length of the upper specific end portion 7A that overlaps the lower specific end portion 8A in the vertical direction can be kept within a predetermined range.

In the present embodiment, the lower detection position where the lower sensor unit 78 detects whether or not the lower specific end portion 8A of the lower cloth 8 is present is the position of the through hole provided in the nozzle plate 59, and is in the transport direction. It is a position between the discharge port 27 and the lower holding roller 76 (see FIG. 6). On the other hand, the upper detection position where the upper sensor portion 85 detects whether or not the upper specific end portion 7A of the upper cloth 7 is present is the position of the recess 26B provided on the slope 26A of the upper support portion 26 of the nozzle 24. Therefore, the upper detection position is a position between the crimping point of the upper transporting roller 12 and the lower transporting roller 64 and the discharge port 27 in the transport direction, and can be positioned closer to the crimping point side than the discharge port 27. Therefore, the upper specific end portion 7A of the upper cloth 7 can shorten the distance from the upper detection position to the crimping point, and the upper cloth 7 can be overlapped without shifting to the right or left with respect to the lower cloth 8 at the crimping point. can.

When ending the bonding process, the operator operates the tread 18 with his / her foot to input an instruction to end the bonding process. When the end instruction of the bonding process is detected (S40: YES), the CPU 101 stops driving the upper transfer motor 14, the lower transfer motor 63, the pump motor 36, the lower motor 72, and the upper motor 48 (S41). The CPU 101 ends the bonding process and ends the main process.

As described above, the cloth bonding device 1 of the present embodiment includes a first cross plate 57, a second cross plate 58, a nozzle plate 59, a nozzle 24, a supply mechanism portion 35, an upper transfer roller 12, and a lower transfer roller 64. .. The first cross plate 57, the second cross plate 58, and the nozzle plate 59 support the lower cloth 8 from below. The nozzle 24 has an upper support portion 26 and a discharge port 27. The upper support portion 26 is provided between the lower cloth 8 and the upper cloth 7 overlapping the lower cloth 8 from the upper side, and supports the upper cloth 7 from the lower side. The discharge port 27 discharges the adhesive below the upper support portion 26 toward the adhesive surface of the lower cloth 8. The supply mechanism unit 35 supplies the adhesive to the nozzle 24. The upper transport roller 12 and the lower transport roller 64 sandwich the lower cloth 8 to which the adhesive is attached and the upper cloth 7 in the vertical direction on the downstream side of the lower cloth 8 and the upper cloth 7 in the transport direction with respect to the nozzle 24. Transport in the transport direction. The CPU 101 of the control device 100 drives and controls the upper transfer roller 12, the lower transfer roller 64, and the supply mechanism unit 35, discharges the adhesive from the discharge port 27, and applies the adhesive to the lower specific end portion 8A of the lower cloth 8. While doing so, the lower specific end portion 8A and the upper specific end portion 7A of the upper cloth 7 are crimped to each other and conveyed.

The cloth bonding device 1 further includes a lower holding roller 76, an upper cloth plate 90, an upper holding roller 42, a lower motor 72, an upper motor 48, a lower sensor portion 78, and an upper sensor portion 85. The lower sandwiching roller 76 projects upward from the nozzle plate 59 on the upstream side in the transport direction with respect to the nozzle 24, is rotatable with the transport direction as the axial direction, and comes into contact with the lower cloth 8. The upper cloth plate 90 extends in the left-right direction and the transport direction, sandwiches the lower cloth 8 with the lower holding roller 76, and supports the upper cloth 7 from the lower side. The upper holding roller 42 can rotate with the transport direction as the axial direction, and sandwiches the upper cloth 7 from the upper side with the upper cloth plate 90. The lower motor 72 drives the lower holding roller 76. The upper motor 48 drives the upper holding roller 42. The lower sensor unit 78 detects whether or not the lower specific end portion 8A is present at the lower detection position, which is a predetermined position in the transport direction. The upper sensor unit 85 detects whether or not the upper specific end portion 7A is present at the upper detection position, which is a predetermined position in the transport direction. The CPU 101 of the control device 100 controls the lower motor 72 and the upper motor 48 when driving and controlling the upper transfer roller 12, the lower transfer roller 64, and the supply mechanism unit 35.

When the lower sensor unit 78 detects that the lower specific end portion 8A is located at the lower detection position, the CPU 101 rotationally drives the lower holding roller 76 in the first output direction and moves the lower cloth 8 to the other side. When the lower sensor unit 78 detects that the lower specific end portion 8A does not exist at the lower detection position, the lower holding roller 76 is rotationally driven in the second output direction opposite to the first output direction, and the lower cloth 8 is driven to one side. Move to. When the upper sensor unit 85 detects that the upper specific end portion 7A is located at the upper detection position, the CPU 101 rotationally drives the upper holding roller 42 in the third output direction and moves the upper cloth 7 to one side. When the upper sensor unit 85 detects that the upper specific end portion 7A does not exist at the upper detection position, the upper holding roller 42 is rotationally driven in the fourth output direction opposite to the third output direction, and the upper cloth 7 is driven to the other side. Move to.

In the above embodiment, the lower detection position where the lower sensor unit 78 detects whether or not the lower specific end portion 8A of the lower cloth 8 is present is the position of the through hole provided in the nozzle plate 59, and is discharged in the transport direction. It is a position between the outlet 27 and the lower holding roller 76. On the other hand, the upper detection position where the upper sensor portion 85 detects whether or not the upper specific end portion 7A of the upper cloth 7 is present is the position of the recess 26B provided on the slope 26A of the upper support portion 26 of the nozzle 24. Therefore, the upper detection position is a position between the crimping point of the upper transporting roller 12 and the lower transporting roller 64 and the discharge port 27 in the transport direction, and can be positioned closer to the crimping point side than the discharge port 27. Therefore, since the upper specific end portion 7A of the upper cloth 7 can shorten the distance from the upper detection position to the crimping point, the cloth adhesive device 1 is right or left with respect to the lower specific end portion 8A of the lower cloth 8 at the crimping point. The upper specific end portion 7A of the upper cloth 7 can be overlapped without shifting to.

In the above description, the first cross plate 57, the second cross plate 58, and the nozzle plate 59 are examples of the lower support portion of the present invention. The supply mechanism unit 35 is an example of the supply mechanism of the present invention. The upper transfer roller 12 and the lower transfer roller 64 are examples of the transfer mechanism of the present invention. The upper transfer roller 12 is an example of the upper roller of the present invention, and the lower transfer roller 64 is an example of the lower roller of the present invention. The upper cloth plate 90 is an example of the support member of the present invention. The CPU 101 that executes the processes of S32 and S33 of the bonding process of FIG. 14 is an example of the discharge transfer control unit of the present invention. The CPU 101 that executes the processes of S34, S35, and S36 is an example of the lower motor control unit of the present invention. The CPU 101 that executes the processes of S37, S38, and S39 is an example of the upper motor control unit of the present invention.

In addition to the above embodiments, the present invention can be modified in various ways. The above embodiment is a cloth adhesive device 1 for adhering cloths to each other, but if it is in the form of a sheet, it may be an adhesive device for adhering sheets made of a material other than cloth.

The above embodiment has been described with the cloth adhesive device 1 to which the tubular lower transport device 50 is fixed as an example, but the shape and structure of the lower transport device for transporting the lower cloth 8 may be different from those of the above embodiment. ..

The upper sensor unit 85 of the above embodiment is an optical sensor in which the upper light emitting unit 85A and the upper light receiving unit 85B are integrally provided, but the upper light emitting unit 85A and the upper light receiving unit 85B may be provided at different positions. The same applies to the lower sensor unit 78.

The upper sensor portion 85 of the above embodiment is supported at the same height position R as the rotating shaft 12A of the upper transport roller 12, but may be provided at a position lower than the same height. Even in such a case, the optical axis of the upper light emitting portion 85A and the surface of the upper transport roller 12 can be made substantially parallel. Therefore, the amount of the reflected light from the upper transport roller 12 reaching the upper light receiving portion 85B can be minimized.

The upper sensor unit 85 of the above embodiment fixes the reflector 28 that reflects the light emitted by the upper light emitting unit 85A to the bottom surface of the recess 26B provided on the slope 26A of the upper support portion 26 of the nozzle 24, but in the transport direction. As long as it is located between the crimping point of the upper transfer roller 12 and the lower transfer roller 64 and the discharge port 27, it may be provided at another portion of the nozzle 24, for example. The upper support portion 26 is preferably provided with a portion extending downstream from the discharge port 27 in the transport direction, and it is preferable to fix the reflector 28 to the portion. The upper support portion 26 does not have to include the recess 26B. At this time, the upper support portion 26 may be provided with a convex portion protruding rearward from the slope 26A, and a reflector 28 may be provided on the convex portion. The reflector 28 may be provided on the slope 26A of the upper support portion 26. At this time, it is preferable that the reflector 28 is a reflective member that regresses and reflects the light emitted from the upper light emitting unit 85A.

The reflectors 28 and 95 of the above embodiment use a reflective member that retroreflects the light emitted from the upper light emitting unit 85A and the lower light emitting unit 78A, but any member that can reflect the light even if it is not retroreflective. good.

1 Cloth adhesive device 7 Upper cloth 7A Upper specific end 8 Lower specific end 8 Lower specific end 12 Upper transfer roller 12A Rotating shaft 24 Nozzle 26 Upper support 26B Recess 27 Discharge port 28 Reflector 35 Supply mechanism 42 Upper pinching roller 57 First cross plate 58 Second cross plate 59 Nozzle plate 64 Lower transport roller 76 Lower holding roller 78 Lower sensor part 81 Sensor support member 85A Upper light emitting part 85B Upper light receiving part 90 Upper cloth plate 101 CPU

Claims (7)

A lower support part that supports the lower sheet from the lower side,
An adhesive is provided between the lower sheet and the upper sheet overlapping the lower sheet from above, and the upper support portion that supports the upper sheet from the lower side and the adhesive surface below the upper support portion toward the adhesive surface of the lower sheet. With a nozzle having a discharge port for discharging
A supply mechanism that supplies the adhesive to the nozzle,
A transport mechanism that vertically sandwiches the lower sheet and the upper sheet to which the adhesive is adhered on the downstream side of the lower sheet and the upper sheet in the transport direction with respect to the nozzle and transports the lower sheet in the transport direction. ,
The transfer mechanism and the supply mechanism are driven and controlled to discharge the adhesive from the discharge port, and the end of the adhesive surface of the lower sheet on one side in a specific direction orthogonal to the transfer direction and the vertical direction. While applying the adhesive to the lower specific end portion, the lower specific end portion and the upper specific end portion, which is the end portion of the upper sheet on the other side opposite to the one side, are pressure-bonded to each other. In an adhesive device provided with a discharge / transfer control unit for transporting
A lower holding roller that protrudes upward from the lower support portion on the upstream side in the transport direction with respect to the nozzle, is rotatable about the transport direction in the axial direction, and is in contact with the lower sheet.
A support member that extends in the specific direction and the transport direction, sandwiches the lower sheet between the lower holding rollers, and supports the upper sheet from below.
An upper holding roller that can rotate with the transport direction as an axial direction and sandwiches the upper sheet from above with the support member.
The lower motor that drives the lower pinching roller and
The upper motor that drives the upper pinching roller and
A lower detection unit that detects whether or not the lower specific end portion is present at the lower detection position that is a predetermined position in the transport direction, and a lower detection unit.
An upper detection unit that detects whether or not the upper specific end portion is present at the upper detection position, which is a predetermined position in the transport direction, and an upper detection unit.
When the discharge transfer control unit controls the transfer mechanism and the supply mechanism, the discharge transfer control unit includes a motor control unit that controls the lower motor and the upper motor.
The motor control unit
When the lower detection unit detects that the lower specific end portion is located at the lower detection position, the lower pinching roller is rotationally driven in the first output direction to move the lower sheet to the other side. When the lower detection unit detects that the lower specific end is not present at the lower detection position, the lower pinching roller is rotationally driven in the second output direction opposite to the first output direction, and the lower sheet is moved to the lower sheet. The lower motor control unit that moves to one side and
When the upper detection unit detects that the upper specific end portion is located at the upper detection position, the upper detection unit is rotationally driven in the third output direction to move the upper sheet to the one side. When the upper detection unit detects that the upper detection position does not have the upper specific end portion, the upper pinching roller is rotationally driven in the fourth output direction opposite to the third output direction, and the upper sheet is moved to the above. Equipped with an upper motor control unit that moves to the other side,
The lower detection position is a position between the discharge port and the lower holding roller in the transport direction.
The upper detection position is a bonding device characterized by being a position between a crimping point where the transport mechanism sandwiches the lower sheet and the upper sheet and crimps each other in the transport direction and the discharge port. The upper detector is
A light emitting part that emits light and
A reflecting unit that reflects the light emitted from the light emitting unit,
A light receiving unit that receives the reflected light reflected by the reflecting unit, and a light receiving unit.
Equipped with
The adhesive device according to claim 1, wherein the reflective portion is provided on the side opposite to the light emitting portion with respect to the upper detection position. The reflective portion is located downstream of the discharge port in the upper support portion in the transport direction.
The adhesive device according to claim 2, wherein the light emitting portion is located above the reflecting portion. The transport mechanism is
An upper roller that is arranged on the upper side of the upper sheet at a position where the upper sheet is overlapped with the lower sheet, is rotatable about a rotation axis extending in a specific direction, and is in contact with the upper surface of the upper sheet.
By arranging it on the lower side of the lower sheet and facing the upper roller, and rotating around a rotation axis parallel to the rotation axis of the upper roller, and contacting the lower surface of the lower sheet. A lower roller that sandwiches the upper sheet and the lower sheet with the upper roller.
The upper detection unit includes an integrated light emitting / receiving unit having the light emitting unit and the light receiving unit.
The adhesive device according to claim 3, wherein the light receiving / receiving unit is arranged at a height position equal to or lower than the rotation axis of the upper roller. A light emitting and receiving part support member that extends downward from a position above the upper roller and supports the light receiving and receiving part at the lower end portion is provided.
The light receiving / receiving part support member is
The arm extending downward from the upper position and
It is provided with a fixing portion that is connected to the lower end portion of the arm portion and fixes the light receiving / receiving portion.
The adhesive device according to claim 4, wherein when the upper roller is viewed from the upstream side in the transport direction, the arm portion is arranged on the specific direction side with respect to the upper roller. The upper support portion has a recessed portion that is recessed downward.
The adhesive device according to any one of claims 3 to 5, wherein the reflective portion is arranged in the recess. The adhesive device according to any one of claims 3 to 6, wherein the reflecting unit is a reflecting member that retroreflects light emitted from the light emitting unit.

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