JP2019178471A - Bonding device - Google Patents

Abstract

To provide a bonding device by which a positional relationship of a lower sheet end and an upper sheet end to a nozzle is hardly shifted and which can transport a lower cloth and an upper cloth stably.SOLUTION: A cloth bonding device discharges an adhesive agent from a discharge port 27 and, while applying the adhesive agent to a lower specific end of a lower cloth, press-bonds the lower specific end to an upper specific end of an upper cloth for transportation. An upper sensor part 85 emits light, and by receiving reflection light from a reflection board 28 arranged in an upper detection position, detects whether the upper specific end is in the upper detection position. The reflection board 28 is fixed to a recess 26B of un upper support part 26 in a nozzle 24. The cloth bonding device rotates an upper nipping roller 42 based on detection results of the upper sensor part 85 and controls a position of the right-left direction of the upper cloth. Because the reflection board 28 is in a position closer to the side of a pressure-adhesion point than the discharge port 27, the distance from the upper detection position to the pressure-adhesion point is short. Therefore, the cloth bonding device can overlaps the upper specific end on the lower specific end on a pressure-adhesion point without deviation in the right-left direction.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a bonding apparatus.

  A bonding apparatus that bonds two sheets of cloth together with an adhesive is known. The bonding apparatus of Patent Document 1 includes a nozzle, an upper transfer roller, a belt, and a two-edge guide member. The nozzle discharges adhesive to the lower sheet. The upper transfer roller transfers the lower sheet and the upper sheet coated with an adhesive while pressing between the belt and the upper sheet. The two-edge guide member includes a lower sheet guide part and an upper sheet guide part. An operator inserts and positions the right end portion of the lower sheet into the lower sheet guide portion, and inserts and positions the left end portion of the upper sheet into the upper sheet guide portion.

JP 2011-122262 A

  In the above-described bonding apparatus, 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, and wrinkles may occur. If the operator's force to hold the lower sheet and upper sheet is too weak, the lower sheet right edge and upper sheet left edge will be displaced from the lower sheet guiding part and upper sheet guiding part, and the amount of overlap between the lower sheet and upper sheet can vary. There is sex. Therefore, there is a possibility that it is 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 respective nozzles.

  An object of the present invention is to provide an adhesive device in which the positional relationship between the end portion of the lower sheet and the end portion of the upper sheet with respect to the nozzle is difficult to shift, and the lower cloth and the upper cloth can be stably conveyed.

The bonding apparatus according to claim 1 is provided between a lower support portion that supports a lower sheet from the lower side, and an upper sheet that overlaps the lower sheet and the lower sheet from the upper side, and supports the upper sheet from the lower side. A nozzle having a portion, a discharge port for discharging an adhesive toward an adhesive surface of the lower sheet below the upper support portion, a supply mechanism for supplying the adhesive to the nozzle, and the nozzle A conveying mechanism that conveys the lower sheet to which the adhesive is attached and the upper sheet in the up and down direction in the conveying direction on the downstream side in the conveying direction of the lower sheet and the upper sheet; and the conveying mechanism; The lower side, which is an end portion on one side of a specific direction orthogonal to the transport direction and the vertical direction, of the adhesive surface of the lower sheet by driving and controlling the supply mechanism and discharging the adhesive from the discharge port. Apply the adhesive to the specific end However, in a bonding apparatus comprising: a lower specific end portion; and a discharge conveyance control unit that conveys the upper specific end portion, which is the end portion of the upper sheet on the other side opposite to the one side, by pressure bonding to each other. A lower clamping 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 as an axial direction, and is in contact with the lower sheet; A support member that extends in a conveying direction, sandwiches the lower sheet with the lower clamping roller, and supports the upper sheet from below; and is rotatable with the conveying direction as an axial direction, An upper clamping roller that is sandwiched between the support member from above, a lower motor that drives the lower clamping roller, an upper motor that drives the upper clamping roller, and a lower detection position that is a predetermined position in the transport direction A lower detection unit that detects whether or not the lower specific end is present; and an upper detection unit that detects whether or not the upper specific end is present at an upper detection position that is a predetermined position in the transport direction; A motor control unit configured to control the lower motor and the upper motor when the discharge conveyance control unit controls the conveyance mechanism and the supply mechanism; and the motor control unit is located at the lower detection position. When the lower detection unit detects that there is a lower specific end, the lower clamping roller is rotationally driven in the first output direction, the lower sheet is moved to the other side, and the lower detection position is moved to the lower detection position. When the lower detection unit detects that there is no specific end, the lower clamping roller is driven to rotate in a second output direction opposite to the first output direction, and the lower sheet moves to the one side. A motor control unit and the upper specific end at the upper detection position; When the upper detection unit detects that the upper clamping roller is rotationally driven in the third output direction, the upper sheet is moved to the one side, and the upper specific end portion is not at the upper detection position. When the upper detection unit detects this, an upper motor control unit that rotates the upper clamping roller in a fourth output direction opposite to the third output direction and moves the upper sheet to the other side; The lower detection position is a position between the discharge port and the lower clamping roller in the transport direction, and the upper detection position is the transport mechanism in which the transport mechanism sandwiches the lower sheet and the upper sheet. It is a position between the crimping | compression-bonding point which mutually crimps | crimps and the said discharge outlet, It is characterized by the above-mentioned. 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 clamping roller, and the upper specific end moves near the upper detection position due to the rotation of the upper clamping 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 difficult to shift. Therefore, it is possible to realize an adhesive device in which the positional relationship between the end portion of the lower sheet and the end portion of the upper sheet with respect to the nozzle is not easily shifted and the lower sheet and the upper sheet can be stably conveyed. The lower detection position at which the lower detection unit detects whether or not the lower specific end portion of the lower sheet is present is a position between the discharge port and the lower clamping roller in the conveyance direction. On the other hand, the upper detection position where the upper detection unit detects whether or not the upper specific end portion of the upper sheet is present 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 pressure bonding point side with respect to 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 stacked without being shifted to one or the other with respect to the lower sheet at the crimping point.

  The upper detection unit of the bonding apparatus according to claim 2, a light emitting unit that emits light, a reflective unit that reflects light emitted from the light emitting unit, a light receiving unit that receives reflected light reflected by the reflective unit, The reflection part may be provided on the opposite side of the light emitting part with respect to the upper detection position. When there is an upper sheet at the upper detection position, the upper sheet blocks light emitted from the light emitting unit, and the light receiving unit does not receive reflected light. When there is no upper sheet at the upper detection position, the reflecting portion reflects light emitted from the light emitting portion, and the light receiving portion 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.

  The reflection unit of the bonding apparatus according to claim 3 is preferably located downstream of the discharge port in the transport direction in the upper support unit, and the light emitting unit is positioned above the reflection unit. The reflection portion is located downstream of the discharge port in the transport direction in the upper support portion of the nozzle. Therefore, the bonding apparatus can bring the nozzle closer to the crimping point side. Therefore, the bonding apparatus can suppress the lower sheet from being displaced in a specific direction while the adhesive is applied to the lower sheet and then conveyed to the crimping point.

  The conveyance mechanism of the bonding apparatus according to claim 4, wherein the upper sheet is arranged on the upper side of the upper sheet at a position where the upper sheet overlaps the lower sheet, and is rotatable about a rotation axis extending in the specific direction, An upper roller that is in contact with the upper surface of the upper sheet; and is disposed on the lower side of the lower sheet and opposed to the upper roller, and is rotatable about a rotation axis that is parallel to the rotation axis of the upper roller. A lower roller that sandwiches the upper sheet and the lower sheet with the upper roller by contacting the lower surface of the lower sheet, and the upper detection unit includes the light emitting unit and the light receiving unit. A body-shaped light projecting / receiving unit may be provided, and the light projecting / receiving unit may be disposed at a height position equal to or lower than the rotational axis of the upper roller. Since the light projecting / receiving unit is disposed at the same height position as the rotation axis of the upper roller or a height position lower than that, the optical axis of the light emitting unit and the surface of the upper roller can be made substantially parallel. Therefore, the amount of reflected light from the upper roller reaching the light receiving portion can be minimized. Therefore, most of the reflected light reaching the light receiving portion is 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 apparatus according to claim 5 includes a light projecting / receiving unit supporting member that extends downward from a position above the upper roller and supports the light projecting / receiving unit at a lower end, and the light projecting / receiving unit support member is An arm portion extending downward from a position; and a fixing portion that is connected to a lower end portion of the arm portion and fixes the light projecting / receiving portion, and when the upper roller is viewed from the upstream side in the transport direction, The portion may be arranged on the specific direction side with respect to the upper roller. When the upper roller is viewed from the upstream side in the conveyance direction, the arm portion of the light projecting / receiving unit support member is arranged on the specific direction side of the upper roller, so the arm portion is obstructed when the operator sets the upper sheet. do not become. Therefore, the upper specific end portion of the upper sheet can be easily seen, so that workability is improved.

  The upper support part of the bonding apparatus according to claim 6 has a recessed part recessed downward, and the reflecting part may be disposed in the recessed part. Since the reflecting portion is disposed in the concave portion that dents the upper support portion downward, it does not hinder the conveyance of the upper sheet supported by the upper support portion. Therefore, the bonding apparatus can convey the upper sheet more stably.

  The said reflection part of the adhesion | attachment apparatus of Claim 7 is good in it being a reflection member which recursively reflects the light radiate | emitted from the said light emission part. Since the reflecting portion is a reflecting member that recursively reflects 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 portion. Therefore, the upper detection unit can detect the upper specific end of the upper sheet with high accuracy even in a narrow place where the upper clamping roller, the nozzle, the upper roller, and the like are arranged.

  The inventions of claims 1 to 7 described above can be arbitrarily combined. For example, not all or a part of claim 1 but also at least one of the other claims 2 to 7 may be provided. However, in particular, the configuration of claim 1 may be provided, and at least one of the configurations of claims 2 to 7 may be provided in combination. Further, any constituent elements 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.

1 is an overall perspective view of a cloth bonding apparatus 1. FIG. 1 is an overall perspective view showing an internal structure of a cloth bonding apparatus 1. FIG. The left view of the cloth bonding apparatus 1. The elements on larger scale in the W1 area | region shown in FIG. The left view of the cloth bonding apparatus 1 (nozzle lever is omitted). The elements on larger scale in the W2 area | region shown in FIG. The enlarged view seen from the left of the nozzle 24 periphery. 1 is a front view of a cloth bonding apparatus 1. FIG. The elements on larger scale in the W3 area | region shown in FIG. The whole perspective view seen from the diagonally left rear of the cloth bonding apparatus 1 (the upper transport mechanism is omitted). The elements on larger scale in the W4 area | region shown in FIG. 1 is a block diagram showing an electrical configuration of a cloth bonding apparatus 1. FIG. Flow chart of main processing. The flowchart of an adhesion process.

  Embodiments of the present invention will be described with reference to the drawings. In the following description, left, right, front, back, and top and bottom indicated by arrows in the figure are used.

  The cloth bonding apparatus 1 shown in FIG. 1 bonds 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 bonding apparatus 1 bonds, for example, a lower specific end 8A that is the right end of the lower cloth 8 and an upper specific end 7A that is the left end of the upper cloth 7 via an adhesive. The cloth bonding apparatus 1 conveys the upper cloth 7 and the lower cloth 8 backward. The rear direction is the downstream side in the transport direction, and the front direction is the upstream side in the transport direction.

  With reference to FIGS. 1-11, the structure of the cloth bonding apparatus 1 is demonstrated. As shown in FIGS. 1 and 2, the cloth bonding apparatus 1 includes a pedestal 2, a pedestal 3, an arm 4, a head 5, and a lower transport device 50. The pedestal portion 2 has a substantially rectangular parallelepiped shape and is installed on a work table (not shown). The pedestal column portion 3 has a column shape extending upward from the upper surface of the pedestal portion 2. The arm 4 extends leftward from the upper end of the pedestal 3. The head 5 projects leftward from the left end of the arm 4. The pedestal portion 2 includes a fixed surface 2A at the lower left surface. The fixed surface 2A is a flat surface facing the left direction and parallel to the vertical direction. The lower transport device 50 is detachably fixed to the fixed surface 2A. The lower conveyance device 50 cooperates with an upper conveyance mechanism unit 10 to be described later, superposes 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 “cylinder type” having an elongated cylindrical tip extending substantially horizontally from the upstream side to the downstream side in the transport direction. For example, when creating a T-shirt, two cloths are placed side by side, but the cloth is finally in a cylindrical state. Side-by-side is an operation of bonding and adhering adjacent ends of two pieces of cloth. Since the front end portion of the lower transport device 50 is in the shape of an elongated cylinder, the operator can handle the dough at the front end portion of the lower transport device 50. Therefore, the lower conveyance device 50 is suitable when the end portions of two cloths are bonded to create a cylindrical fabric.

  The head 5 includes an upper transport mechanism unit 10, a nozzle lever swing mechanism unit 20, and a mounting unit 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 them backward. The nozzle lever swing mechanism 20 supports the nozzle lever 23 so as to be swingable in the front-rear direction. The nozzle lever 23 extends like an arm in the vertical direction, and includes a nozzle 24 (see FIGS. 3 and 4) at the lower end. The nozzle 24 discharges the adhesive to the lower cloth 8 before the upper cloth 7 overlaps. The mounting unit 30 detachably mounts a cartridge containing an adhesive. The arm unit 4 includes an upper clamping unit 40, a supply mechanism unit 35, and an upper sensor unit 85. The upper clamping unit 40 controls the position in the left-right direction of the upper cloth 7 to be conveyed rearward. 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 unit 10 is provided at the lower rear portion of the head 5. The upper transport mechanism unit 10 includes a support arm 11, an upper transport roller 12, an upper transport 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, further bends, and extends obliquely downward to the front. The support arm 11 is supported by the head 5 so as to be swingable. The support arm 11 supports the upper conveyance roller 12 at the lower end portion so as to be rotatable about the rotation shaft 12A. The rotating shaft 12A extends in the left-right direction. The upper transport motor 14 (see FIG. 3) is provided at the rear end of the support arm 11. The upper transport motor 14 is connected to the upper transport roller 12 via a transmission mechanism provided inside the support arm 11. Therefore, the upper conveyance roller 12 is rotated by the power of the upper conveyance motor 14.

  The arm air cylinder 15 (see FIG. 12) is provided on the head 5. The support arm 11 swings up and down by driving the arm air cylinder 15. As the arm air cylinder 15 swings the support arm 11, the upper transport roller 12 moves between the nipping position and the retracted position. The upper conveying roller 12 at the nipping position sandwiches the lower cloth 8 and the upper cloth 7 between a lower conveying roller 64 (see FIG. 4) described later. The upper conveying roller 12 in the retracted position is retracted upward from the upper cloth 7.

  The configuration of the nozzle lever swing mechanism 20 will be described. As shown in FIG. 2, the nozzle lever swing mechanism 20 is provided on the left side inside the head 5. The nozzle lever swing mechanism 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 cylindrical shape extending in the left-right direction above the worm, and supports the nozzle lever 23 in a swingable manner. The support shaft supports a worm wheel (not shown) that meshes with the worm upper end. The support shaft rotates together with the worm wheel by the power of the nozzle motor 21.

  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 portion 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 therein and communicates with the inside of the support shaft. The nozzle lever 23 includes a heater 132 (see FIG. 12) in the vicinity of the flow path. The heater 132 warms the flow path to prevent the adhesive from solidifying and enhances fluidity. The nozzle 24 is detachably attached to the lower end portion of the nozzle lever 23. By driving the nozzle motor 21, the nozzle lever 23 swings, and the nozzle 24 moves between an approach position approaching the upper transport roller 12 and a retract position upstream of the approach position in the transport direction. The adhesive supplied by the supply mechanism 35 flows into 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 obliquely downward from the lower end portion of the nozzle lever 23 with respect to the rear. The flow path shaft portion 25 includes a flow path inside and communicates with the flow path of the nozzle lever 23. The upper support portion 26 is bent rightward from the lower end portion of the flow path shaft portion 25 and extends substantially horizontally. The upper support portion 26 has a substantially triangular bar shape when viewed from the left side. The upper support portion 26 includes a flow channel 261 therein and communicates with the flow channel of the flow channel shaft portion 25. The upper support portion 26 is provided with a discharge port 27 (see FIG. 6) at a portion of 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 that has flowed 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 includes a slope 26A on the upper rear side. The slope 26A is a surface that slopes downward from the upper end toward the rear. The upper support portion 26 includes a concave portion 26B at the central portion in the left-right direction of the slope 26A. The concave portion 26B is a rectangular portion in plan view that is recessed downward. The bottom surface of the recess 26B is a substantially horizontal plane. The recess 26 </ b> B is located downstream of the discharge port 27 in the transport direction. The upper support portion 26 fixes the reflecting plate 28 to the bottom surface of the recess 26B. The reflector 28 recursively reflects light emitted from an upper light emitting portion 85A (see FIG. 12) of the upper sensor portion 85, which will be described later, toward the upper light receiving portion 85B (see FIG. 12) of the upper sensor portion 85.

  The configuration of the mounting unit 30 will be described. As shown in FIGS. 1 and 2, the mounting portion 30 is provided at a substantially central portion of the head 5 and includes a cover 31 </ b> A, a storage portion 31 </ b> B, a lid 31 </ b> C, and a heater 131 (see FIG. 12). The cover 31 </ b> A 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 accommodates a cartridge (not shown) in a removable manner. The lid 31C is detachably provided on the upper side of the accommodating portion 31B, and opens and closes the upper opening of the accommodating portion 31B. The cartridge contains a hot melt adhesive. The adhesive liquefies when heated to a predetermined temperature 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 accommodated in the accommodating portion 31B. The adhesive is melted and liquefied by the heating of the heater 131.

  The configuration of the upper clamping unit 40 will be described. As shown in FIGS. 2 and 8, the upper clamping unit 40 is provided on the lower surface of the arm portion 4. The upper clamping unit 40 includes an upper arm 41, an upper clamping 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 from the lower right side portion of the arm portion 4 to the lower side and the left side, and has an arm shape and a cylindrical shape. The right arm of the upper arm 41 is supported on the left side of the lower surface of the arm 4 so as to be rotatable about the axis P (see FIG. 2). The tip (lower end) of the upper arm 41 is arranged on the upstream side in the transport direction of the nozzle 24 located at the approach position. The rotating shaft 43 protrudes rearward from the tip of the upper arm 41, and the front-rear direction is the axial direction. The upper clamping roller 42 is fixed to the rear end portion of the rotation shaft 43 and can rotate together with the rotation shaft 43 with the front-rear direction as the axial direction. The upper motor 48 is a motor that can rotate forward and backward. 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 clamping roller 42. The endless belt is bridged between a pair of pulleys. Therefore, the power transmission mechanism transmits the power of the upper motor 48 to the upper clamping roller 42 and can rotate the upper clamping 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 rotational position of the upper arm 41 where the lower end of the upper clamping roller 42 is at the same height as the upper surface of the upper cloth plate 90 described later. The separation position is a rotational position of the upper arm 41 at which the lower end of the upper clamping roller 42 is separated from the upper surface of the upper cloth plate 90. The spring 47 constantly urges the upper arm 41 clockwise around the axis P around the axis P via another member. Therefore, the spring 47 always urges the upper arm 41 in the rotation direction from the contact position toward the separation position. The upper arm 41 has an urging force whose tip moves in the direction toward the contact position due to its own weight such as the upper arm 41 and the upper clamping roller 42. Since the spring 47 urges the upper arm 41 in the rotation direction toward the separation position against the urging force, the force of the upper arm 41 toward the contact position is prevented from becoming excessive. 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 about 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 cartridge adhesive stored in the storage unit 31 </ b> B 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 36 </ b> A is connected to the gear pump 37 via the gear 38. The gear pump 37 sucks the adhesive from the cartridge accommodated in the accommodating portion 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 unit 85 is supported by the support arm unit 500 and the sensor support member 81 between the upper conveyance roller 12 and the upper clamping roller 42. The support arm portion 500 is formed in an elongated plate shape, and extends downward while being curved so as to protrude forward from the lower surface of the arm portion 4. The support arm 500 is provided with a pair of fixing holes 501 (see FIG. 11) arranged in the left-right direction at the lower end. The sensor support member 81 is detachably fixed to the lower end portion of the support arm portion 500 with a pair of screws 88.

  As shown in FIG. 11, the sensor support member 81 includes a fixed portion 82 and a support portion 83. The fixing portion 82 is a portion that contacts and fixes the front surface of the lower end of the support arm portion 500, and is formed in a substantially rectangular plate shape that extends in the left-right direction. The fixing portion 82 includes a long 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 the support arm portion is inserted through the elongated hole 821 of the fixing portion 82. Fastened 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 part 83 includes a lateral protrusion 831, an arm part 832, and a sensor fixing part 833. The lateral projecting portion 831 is a portion projecting leftward from the left end portion of the fixed portion 82. The arm portion 832 is a portion that is bent downward from the left end portion of the lateral projecting portion 831 and extends substantially linearly. The sensor fixing portion 833 is a portion that bends and extends rightward 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 (the height position indicated by the two-dot chain line R in FIG. 6) as the rotation shaft 12A of the upper transport roller 12 or a lower height position. To do. The upper light emitting portion 85A and the upper light receiving portion 85B are at the same height position. The upper light emitting portion 85A emits light obliquely rearward toward the reflecting plate 28 provided in the concave portion 26B of the upper support portion 26 of the nozzle 24. The light emitted from the upper light emitting unit 85A is reflected by the reflecting plate 28. The upper light receiving portion 85B receives the reflected light reflected by the reflecting plate 28.

  The reflector 28 is preferably a member that reflects light back. Since the reflecting plate 28 is a reflecting member that recursively reflects light, the light can be reflected in the same direction as the emitted light even if the reflecting plate 28 is not orthogonal to the light emitted from the upper light emitting portion 85A. Therefore, the upper sensor portion 85 can detect the upper specific end portion 7A of the upper cloth 7 with high accuracy even in a narrow place where the upper clamping roller 42, the nozzle 24, the upper conveying roller 12 and the like are arranged.

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

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

  In the present embodiment, the position of the upper sensor unit 85 in the left-right direction can be adjusted by adjusting the fixing position of the sensor support member 81 with respect to the support arm unit 500 in the left-right direction. When the pair of screws 88 are 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 determines the position of the upper sensor portion 85 in the left-right direction and then tightens the pair of screws 88, whereby the fixing portion 82 is fixed to the lower end portion of the support arm portion 500 and the upper sensor portion 85 can be positioned.

  The structure of the lower transport 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 60 (see FIG. 2) is a unit capable of controlling the position of the lower cloth 8 in the left-right direction while superimposing and transporting the upper cloth 7 and the lower cloth 8 in cooperation with the upper transport mechanism 10. It is. The frame 55 (see FIG. 1) is a casing that houses the lower transport mechanism 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 substantially rectangular shape when viewed from the left side and has a surface direction in the horizontal 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 includes a slope portion 54 at a portion other than the front side of the left surface. The slope portion 54 is substantially triangular when viewed from the front, and has a slope that slopes downward from the top toward the left side. The slope portion 54 prevents the fabric from being caught by sliding the fabric formed by bonding the upper fabric 7 and the lower fabric 8 together. The horizontal plate 53 is formed in a substantially L shape in plan view (see FIG. 10), and has a portion that extends 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 left surface of the vertical plate 52 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 conveyance direction, and is formed in a substantially box shape having an upper opening. The accommodating portion 551 accommodates a plurality of motors of the lower transport mechanism portion 60 which will be described later. The accommodating part 551 fixes the 1st cross plate 57 with the screw | thread at the upper part opened. The first cross plate 57 is a plate member extending horizontally. The extending portion 552 is formed in a substantially rectangular tube shape extending from the rear portion of the accommodating portion 551 to the downstream side in the transport direction. The upper part of the extending part 552 is opened. The extending portion 552 accommodates the tip portion of the lower transport mechanism portion 60 therein. The front end portion of the lower transport mechanism 60 extends rearward and is formed in an elongated shape. The extending portion 552 fixes the second cross plate 58 with screws at the upper opening. The second cross plate 58 is a substantially rectangular plate member that is long in the front-rear direction in plan view. The extending portion 552 has an opening 553 (see FIG. 11) at a tip portion extending rearward. The front end portion of the lower transport mechanism portion 60 protrudes rearward from the opening portion 553 of the extending portion 552 and is exposed.

  The structure of the lower transport mechanism 60 will be described. As shown in FIG. 2, the lower transport mechanism 60 includes a support frame 61, a swing shaft 62, a lower transport motor 63, a lower transport roller 64 (see FIGS. 6 and 11), and a nozzle lower roller 65 (FIGS. 6 and 11). Reference), a conveying belt 67, a nozzle gap adjusting motor 68, a lower clamping 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 that is orthogonal to the length direction and 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 erected in the vertical direction, and extends in parallel to the transport direction, and is formed in a substantially L shape in right side view in which the upstream portion in the transport direction is bent downward in a substantially L shape. . The right plate portion 61A includes a circular through hole 63A on the front end side, and a substantially rectangular cam hole 63B below the right through hole 63A. The drive shaft (not shown) of the lower transport motor 63 is inserted into the through hole 63A. The cam hole 63B arranges a cam plate 69 described later on the inside. The left plate portion 61B is a plate portion erected in parallel with the right plate portion 61A and 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 a substantially rectangular shape elongated in the left side view extending in parallel to the direction. The bottom plate portion 61C is a plate portion that connects the rear portions at the lower ends of the right plate portion 61A and the left plate portion 61B substantially horizontally, and is formed in a substantially rectangular shape when viewed from the bottom.

  The swing shaft 62 is fixed in a substantially intermediate portion in the length direction of the support frame 61 by penetrating between the right plate portion 61A and the left plate portion 61B in the left-right direction. The left and right end portions of the swing shaft 62 protrude 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 the left and right walls of the extending portion 552 of the frame 55 (see FIG. 1). Therefore, the support frame 61 of the lower transport mechanism 60 can swing around the swing shaft 62 with respect to the frame 55.

  The lower conveyance motor 63 is fixed to the front end side portion of the right surface of the right plate portion 61 </ b> A of the support frame 61. A drive shaft (not shown) of the lower conveyance motor 63 protrudes leftward from the right surface of the right plate portion 61A. The drive shaft is inserted into a through hole 63A provided in the right plate portion 61A and protrudes inside the support frame 61.

  The lower conveyance roller 64 is rotatably supported inside the front end portion of the support frame 61. The rotation shaft 64A of the lower conveyance roller 64 extends in the left-right direction and is rotatably inserted into holes provided in the right plate portion 61A and the left plate portion 61B (see FIG. 6). The lower conveyance roller 64 is disposed directly below the upper conveyance roller 12 and can contact the upper conveyance roller 12 from below.

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

  The conveyance belt 67 is bridged between the drive shaft of the lower conveyance motor 63 and the rotation shafts 64A and 65A inside the support frame 61. The conveyor belt 67 transmits the driving force of the lower conveyor motor 63 to the lower conveyor roller 64 and the nozzle lower roller 65. Therefore, when the lower conveyance motor 63 is driven, both the lower conveyance roller 64 and the nozzle lower roller 65 rotate.

  The nozzle gap adjusting motor 68 is fixed to a portion extending to the left on the front side of the upper surface of the horizontal plate 53 of the support plate portion 51. The drive shaft 68A of the nozzle clearance adjustment motor 68 protrudes to the left. The drive shaft 68A fixes a substantially circular cam plate 69 at the tip. The cam plate 69 is disposed inside the cam hole 63B provided in the right plate portion 61A of the support frame 61. A 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 contacts the lower edge portion of the cam hole 63B. When the cam plate 69 is rotated by driving the nozzle gap adjusting motor 68, the support frame 61 swings about the swing shaft 62 according to the rotation angle of the cam plate 69. The nozzle gap adjustment motor 68 adjusts the nozzle gap by moving the tip of the lower transport mechanism 60 up and down. The nozzle gap is a gap between the discharge port 27 of the nozzle 24 and a nozzle lower roller 65 (see FIG. 4) described later.

  The lower clamping unit 70 is a unit capable of controlling the position of the lower cloth 8 in the left-right direction in a state where the lower cloth 8 is held between the lower surface of an upper cloth plate 90 described later. As shown in FIG. 2, the lower clamping unit 70 includes a fixed base 71, a lower motor 72, a support frame 73, a rotating shaft 75, a lower clamping 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 housing portion 551 of the frame 55. The fixed base 71 has a circular through hole (not shown) penetrating in the front-rear direction, and rotatably holds the rotating part 717 inside the through hole. The lower motor 72 is fixed to the front surface of the rotating unit 717. Therefore, the lower motor 72 rotates integrally with the rotating part 717 with respect to the fixed base part 71. Therefore, the fixed base part 71 supports the lower motor 72 rotatably together with the rotating part 717. A drive shaft (not shown) of the lower motor 72 is inserted into a through hole (not shown) provided at the center of the rotating portion 717 and connected to a connecting shaft (not shown). The connecting shaft protrudes rearward from the rear surface of the rotating part 717. The support frame portion 73 is disposed 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 rotating shaft 75 is disposed inside the support frame 61 and extends parallel to the transport direction. A belt 74 is placed between the connecting shaft and the rotating shaft 75. The support frame portion 73 rotatably supports the rear end portion of the rotation shaft 75. The lower clamping roller 76 is fixed to the rear end portion of the rotating shaft 75. The lower clamping roller 76 is disposed below the upper clamping roller 42. When the lower motor 72 is driven, the rotary shaft 75 rotates through the drive shaft, the connecting shaft, and the belt. Therefore, the lower clamping roller 76 rotates integrally with the rotation shaft 75 around the rotation 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 protrudes upward. The lower air cylinder 711 contacts the pin 712 from the left side. The lower motor 72 fixes one end of the tension spring 715 to the rear portion of the left surface. The tension spring 715 extends downward, and the other end is fixed to the inner side of the housing portion 551 of the frame 55. The tension spring 715 constantly biases 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 rightward, the lower motor 72 rotates counterclockwise against the urging force of the tension spring 715. Therefore, the lower clamping unit 70 rotates clockwise with respect to the fixed base 71, and the lower clamping roller 76 moves to the lower position. The lower position is a position of the lower clamping roller 76 that is spaced downward with respect to the lower surface of the upper cloth plate 90 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 when viewed from the front by the urging force of the tension spring 715. Therefore, the lower clamping unit 70 rotates counterclockwise with respect to the fixed base 71, and the lower clamping roller 76 moves to the upper position. The upper position is the position of the lower clamping 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 60 having the above-described configuration, the support frame 61 fixes the tip plate 56 to the tip that opens rearward. The tip plate 56 is disposed in a state where it is inclined downward from the upper end portion with respect to the rear. The tip plate 56 is provided with a rectangular cutout 55A at the upper end. The support frame 61 fixes the nozzle plate 59 to the upper rear side portion that opens upward. The nozzle plate 59 extends substantially parallel to the transport direction. The nozzle plate 59 is disposed immediately 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 59 </ b> A immediately below the discharge port 27. The nozzle lower roller 65 is disposed inside the opening 59A, and its upper portion projects upward. The nozzle plate 59 is provided with a rectangular cut-out recess 59B at the rear end. The recesses 55A and 59B are opposed to each other in the front-rear direction, and a rectangular opening is formed at the center thereof. The lower conveying roller 64 is disposed inside the opening, and the upper portion protrudes upward. The nozzle plate 59 is provided with a through hole (not shown) at a position immediately above a lower sensor portion 78 (described later) provided in the support frame 61.

  As shown in FIGS. 6 and 11, the extending portion 552 of the frame 55 attaches the upper cloth plate 90 so as to be rotatable by the fixed shaft portion 91 at the right rear corner 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 plan view. The upper cloth plate 90 is rotatable in the horizontal direction between the operating position and the retracted position with the fixed shaft portion 91 as the center. The upper cloth plate 90 positioned at the operating position is located directly below the upper sandwiching roller 42 and is located directly above the lower sandwiching roller 76. The upper holding roller 42 can hold the upper cloth 7 between the upper surface of the upper cloth plate 90. The lower clamping roller 76 can clamp the lower cloth 8 between the lower surface of the upper cloth plate 90. The upper cloth plate 90 has a reflecting plate 95 attached to the lower surface. In a state where the upper cloth plate 90 is positioned at the operating position, the reflecting plate 95 is located immediately above a through hole (not shown) provided in the nozzle plate 59.

  The lower sensor portion 78 is disposed inside the support frame 61 and below a 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 unit 78A and the lower light receiving unit 78B are at the same height. The lower light emitting portion 78 </ b> A emits light toward the through hole of the nozzle plate 59. The light that has passed through the through hole is reflected by the reflecting plate 95 fixed to the lower surface of the upper cloth plate 90. The reflection plate 95 is preferably a member that recursively reflects light. The reflected light reflected from the reflecting plate 95 passes through the through hole. The lower light receiving portion 78B can receive light that has passed through the through hole.

  For example, when the lower specific end portion 8A of the lower cloth 8 is above the through hole of the nozzle plate 59, the lower specific end portion 8A blocks light emitted from the lower light emitting portion 78A. Therefore, the lower light receiving unit 78B does not receive the light emitted from the lower light emitting unit 78A. When the lower specific end portion 8A is not above the through hole, the light emitted from the lower light emitting portion 78A is reflected by the reflecting plate 95. The lower light receiving portion 78B receives the reflected light through the through hole. Therefore, the lower sensor portion 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 portion 78 detects the lower specific end portion 8A.

  The electrical configuration of the cloth bonding apparatus 1 will be described with reference to FIG. The cloth bonding apparatus 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 performs overall control of the operation of the cloth bonding apparatus 1. The CPU 101 is connected to the ROM 102, the RAM 103, the storage device 104, the operation unit 19, the tread 18, the lower sensor unit 78, the upper sensor unit 85, the drive circuits 105 and 106, and the heaters 131 and 132. The ROM 102 stores programs for executing various processes. The RAM 103 temporarily stores various information. The storage device 104 is nonvolatile and stores various setting values.

  The operation unit 19 includes a switch, a knee switch, an information input unit, and the like. The switch is provided at the lower front of the head 5. The knee switch is provided at the lower part of the work table and operated with the operator's knee. The operator operates the operation unit 19 to input various instructions to the cloth bonding apparatus 1. The operation unit 19 outputs information indicating various instructions to the CPU 101 as a detection result. The tread board 18 is provided at the lower part of the work table and is operated by the operator's feet. The operator inputs a start instruction or an end instruction for bonding, which will be described later, via the tread board 18. The tread board 18 outputs information indicating a start instruction or an end instruction of adhesion to the CPU 101 as a detection result. The lower sensor unit 78 and the upper sensor unit 85 output detection results to the CPU 101.

  The CPU 101 transmits a control signal to the drive circuit 105 to drive and control each of the lower conveyance motor 63, the upper conveyance motor 14, the nozzle motor 21, the pump motor 36, the nozzle gap adjustment motor 68, the lower motor 72, and the upper motor 48. To 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 main processing through the operation unit 19. The CPU 101 reads a program for starting main processing from the ROM 102 and starts main processing. Before the start of the main process, the cloth bonding apparatus 1 is in an initial state. When the cloth bonding apparatus 1 is in the initial state, the nozzle 24 is in the approach position, the upper transport roller 12 is in the clamping position, the upper arm 41 is in the contact position, and the lower clamping roller 76 is in the upper position. The CPU 101 performs initialization processing (S10). In the initialization process, the CPU 101 drives the heaters 131 and 132.

  The CPU 101 determines whether a roller movement instruction is detected based on the detection result of the operation unit 19 (S11). The roller movement instruction is an instruction to move the upper conveyance roller 12, the upper clamping roller 42, and the lower clamping roller 76, respectively. Until the roller movement instruction is detected (S11: NO), the CPU 101 returns to S11 and stands by. When the roller movement instruction is detected (S11: YES), the CPU 101 drives and controls the upper air cylinder 49 (see FIG. 12) and raises the upper conveying roller 12 (S12). The upper conveying roller 12 moves up from the clamping position to the retracted position.

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

  The CPU 101 determines whether a nozzle displacement instruction is 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. Until the nozzle displacement instruction is detected (S15: NO), the CPU 101 returns to S15 and waits.

  During standby, the operator rotates the upper cloth plate 90 counterclockwise in plan view and moves from the operating position to the retracted position. When the operator inputs a 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 to the near side, and the nozzle 24 is displaced 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, whereby 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 stops driving.

  Based on the detection result of the operation unit 19, the CPU 101 determines whether a nozzle displacement instruction has been detected (S17). Until the nozzle displacement instruction is detected (S17: NO), the CPU 101 returns to S17 and waits. During standby, the operator places the lower cloth 8 on the nozzle plate 59 and the second cross plate 58. Both the lower conveyance roller 64 and the nozzle lower roller 65 are in contact with the lower cloth 8 from below. When the operator placing the lower cloth 8 inputs a nozzle displacement instruction to the operation unit 19 (S17: YES), the CPU 101 controls the nozzle motor 21 to displace the nozzle 24 from the retracted position to the approach 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 approach position. The discharge port 27 faces the lower cloth 8 from above.

  The CPU 101 executes a gap adjustment process (S19). The gap adjustment process is a process of adjusting the nozzle gap, which is the gap between the discharge port 27 of the nozzle 24 and the nozzle lower roller 65, by moving the tip of the lower transport mechanism 60 up and down. For example, the 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 gap adjustment motor 68 (see FIG. 12) according to the detection result of the operation unit 19 to swing the lower transport mechanism unit 60 and move the nozzle plate 59 up and down. The operator operates the operation unit 19 so that the nozzle gap is 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 an instruction to end the gap adjustment process to the operation unit 19, the CPU 101 moves the process to S20.

  Based on the detection result of the operation unit 19, the CPU 101 determines whether or not a roller movement instruction has been detected (S20). Until the roller movement instruction is detected (S20: NO), the CPU 101 returns to S20 and waits. During standby, the operator rotates the upper cloth plate 90 clockwise in 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 unit 85 is located on the front side of the upper conveyance roller 12. As shown in FIGS. 8 and 9, when the upper transport roller 12 is viewed from the upstream side in the transport direction, the arm portion 832 of the sensor support member 81 is located on the left side of the upper transport roller 12. Therefore, when the operator places and sets the upper cloth 7, the gap between the lower portion of the upper conveying roller 12 and the upper surface of the nozzle plate 59 is not hidden by the arm portion 832, so that it does not get in the way. Therefore, since the upper specific end portion 7A of the upper cloth 7 can be easily seen in the lower portion of the upper conveying roller 12, workability when placing and setting the upper cloth 7 is improved. The upper cloth 7 overlaps the lower cloth 8 from above between the lower transport roller 64 and the upper transport 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 conveying roller 12 to the nipping position (S21). The upper conveying roller 12 sandwiches the lower cloth 8 and the upper cloth 7 between the lower conveying roller 64.

  The CPU 101 controls the lower air cylinder 711 to raise the lower clamping 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 by the urging force of the tension spring 715, and the rotating shaft 75 and the lower clamping roller 76 rise. Therefore, the lower clamping roller 76 moves from the lower position to the upper position. The lower clamping roller 76 clamps the lower cloth 8 between the lower surface of the upper cloth plate 90. The CPU 101 drives and controls the upper air cylinder 49 and lowers the upper clamping roller 42 (S23). The upper arm 41 moves from the separation position to the contact position. The upper clamping roller 42 sandwiches the upper cloth 7 between the upper surface of the upper cloth plate 90. The CPU 101 executes an adhesion process (S24).

  The adhesion process will be described with reference to FIG. The bonding process is a process of bonding 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 a start instruction has been detected based on whether or not the operator has operated the tread board 18 with his / her foot (S31). Until the start instruction is detected (S31: NO), the CPU 101 returns to S31 and waits. The start instruction is an instruction to start the bonding operation.

  When the operator operates the tread plate 18 with his / her foot and inputs a start instruction (S31: YES), the CPU 101 drives and controls the upper transport motor 14 and the lower transport motor 63, and controls the upper transport roller 12 and the lower transport roller 64, respectively. Driving is started (S32). The upper conveyance roller 12 and the lower conveyance roller 64 cooperate to convey the lower cloth 8 and the upper cloth 7 backward. The nozzle lower roller 65 rotates together with the lower conveyance roller 64 and conveys the lower cloth 8 in a rearward direction.

  The CPU 101 controls the drive of the pump motor 36 and starts 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 8A of the lower cloth 8 positioned below. The upper transport roller 12, the lower transport roller 64, and the nozzle lower roller 65 transport the lower cloth 8 and the upper cloth 7 backward while the discharge port 27 applies the adhesive to the lower specific end 8A.

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

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

  The CPU 101 determines whether or not the upper specific end portion 7A is at the upper detection position based on the detection result of the upper sensor unit 85 (S37). Since the reflecting plate 28 that reflects the light from 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. 7 does not interfere with the transport. Therefore, the cloth bonding apparatus 1 can transport the upper cloth 7 more stably. When the upper specific end 7A is at the upper detection position (S37: YES), the CPU 101 controls the upper motor 48 to rotate the upper clamping roller 42 in the third output direction (S38). The third output direction is a rotation direction in which the lower end of the upper clamping roller 42 is directed to the right side. The upper clamping roller 42 that rotates in the third output direction moves the upper specific end 7A to the right. At this time, the upper specific end 6A moves in a direction away from the upper detection position. The CPU 101 moves the process to S40.

  When the upper specific end portion 7A is not at the upper detection position (S37: NO), the CPU 101 controls the upper motor 48 to rotate the upper clamping roller 42 in the fourth output direction (S39). The fourth output direction is opposite to the third output direction. The upper clamping 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 6A moves in a direction approaching the upper detection position. The CPU 101 moves the process to S40.

  Based on the detection result of the tread board 18, the CPU 101 determines whether or not an instruction to end the bonding process has been detected (S40). When the end instruction of the adhesion process is not detected (S40: NO), the CPU 101 returns to S34 and repeats the process. The lower cloth 8 after the adhesive adheres enters between the lower conveying roller 64 and the upper conveying roller 12. The upper conveyance roller 12 and the lower conveyance roller 64 convey the lower specific end portion 8A and the upper specific end portion 7A to each other with pressure bonding with an adhesive. Therefore, the cloth bonding apparatus 1 bonds the lower specific end 8A and the upper specific end 7A with an adhesive.

  When the CPU 101 repeatedly executes S34 to S39, the lower clamping 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 rearward (S34: NO). The CPU 101 rotationally drives the lower clamping roller 76 in the second output direction (S36). Therefore, even when the lower specific end portion 8A curves to the left front side, the cloth bonding apparatus 1 can suppress a positional shift in the left-right direction between the lower specific end portion 8A passing under the discharge port 27 and the discharge port 27.

  When the lower specific end portion 8A extends linearly in the front-rear direction, the CPU 101 rotationally drives the lower clamping roller 76 alternately in the first output direction and the second output direction (S34: YES, S35, S34: NO, S36). ). Therefore, the cloth bonding apparatus 1 can suppress a shift in the positional relationship between the lower specific end portion 8A passing under 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 clamping 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 the right side of the upper detection position as the upper cloth 7 moves rearward (S37: NO). The CPU 101 rotationally drives the upper clamping roller 42 in the fourth output direction (S39). Therefore, the cloth bonding apparatus 1 can suppress a positional shift in the left-right direction between the upper specific end portion 7 </ b> A passing through the upper support portion 26 and the discharge port 27.

  When the upper specific end portion 7A extends linearly in the front-rear direction, the CPU 101 rotationally drives the upper clamping roller 42 alternately in the third output direction and the fourth output direction (S37: YES, S38, S37: NO, S39). Therefore, the cloth bonding apparatus 1 can suppress a shift in 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 CPU 101 repeatedly executes S34 to S39, the cloth bonding apparatus 1 can adjust the horizontal position of the lower specific end 8A and the upper specific end 7A that pass through the nozzle 24. Therefore, the length in the left-right direction of the upper specific end portion 7A that overlaps the lower specific end portion 8A in the vertical direction can be within a predetermined range.

  In the present embodiment, the lower detection position where the lower sensor portion 78 detects whether or not the lower specific end portion 8A of the lower cloth 8 is present is a position of a through hole provided in the nozzle plate 59, and in the transport direction. This is the position between the discharge port 27 and the lower clamping 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 concave portion 26B provided on the inclined surface 26A of the upper support portion 26 of the nozzle 24. Therefore, the upper detection position is a position between the pressure contact point of the upper transport roller 12 and the lower transport roller 64 and the discharge port 27 in the transport direction, and can be positioned closer to the pressure contact point 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. it can.

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

  As described above, the cloth bonding apparatus 1 according to this embodiment includes the first cross plate 57, the second cross plate 58, the nozzle plate 59, the nozzle 24, the supply mechanism unit 35, the upper transport roller 12, and the lower transport 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 that overlaps the lower cloth 8 from above, and supports the upper cloth 7 from below. The discharge port 27 discharges the adhesive toward the bonding surface of the lower cloth 8 below the upper support portion 26. The supply mechanism unit 35 supplies an adhesive to the nozzle 24. The upper conveying roller 12 and the lower conveying roller 64 sandwich the lower cloth 8 and the upper cloth 7 with the adhesive in the vertical direction on the downstream side of the nozzle 24 in the conveying direction of the lower cloth 8 and the upper cloth 7. To transport in the transport direction. The CPU 101 of the control device 100 drives and controls the upper conveyance roller 12, the lower conveyance 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 8 </ b> A of the lower cloth 8. However, the lower specific end portion 8A and the upper specific end portion 7A of the upper cloth 7 are bonded to each other and conveyed.

  The cloth bonding apparatus 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 unit 78, and an upper sensor unit 85. The lower clamping roller 76 protrudes upward from the nozzle plate 59 on the upstream side in the transport direction with respect to the nozzle 24, is rotatable about the transport direction as an axial direction, and contacts the lower cloth 8. The upper cloth plate 90 extends in the left-right direction and the conveying direction, sandwiches the lower cloth 8 between the lower sandwiching rollers 76, and supports the upper cloth 7 from below. The upper clamping roller 42 is rotatable with the conveying direction as an axial direction, and sandwiches the upper cloth 7 with the upper cloth plate 90 from above. The lower motor 72 drives the lower clamping roller 76. The upper motor 48 drives the upper clamping roller 42. The lower sensor unit 78 detects whether or not the lower specific end 8A is present at a lower detection position that is a predetermined position in the transport direction. The upper sensor unit 85 detects whether or not the upper specific end portion 7A exists at an upper detection position that 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 conveying roller 12, the lower conveying roller 64, and the supply mechanism unit 35.

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

  In the above embodiment, the lower detection position where the lower sensor portion 78 detects whether or not the lower specific end portion 8A of the lower cloth 8 is present is a position of a through hole provided in the nozzle plate 59, and is discharged in the transport direction. This is the position between the outlet 27 and the lower clamping 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 concave portion 26B provided on the inclined surface 26A of the upper support portion 26 of the nozzle 24. Therefore, the upper detection position is a position between the pressure contact point of the upper transport roller 12 and the lower transport roller 64 and the discharge port 27 in the transport direction, and can be positioned closer to the pressure contact point 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, so that the cloth bonding apparatus 1 can move 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.

  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 conveyance roller 12 and the lower conveyance roller 64 are examples of the conveyance mechanism of the present invention. The upper conveying roller 12 is an example of the upper roller of the present invention, and the lower conveying 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 adhesion process in FIG. 14 is an example of the discharge conveyance 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.

  The present invention can be variously modified in addition to the above embodiment. Although the said embodiment is the cloth bonding apparatus 1 which adhere | attaches cloth, if it is a sheet form, the bonding apparatus which adhere | attaches sheets which are materials other than cloth may be sufficient.

  Although the said embodiment demonstrated the cloth bonding apparatus 1 which fixed the cylindrical lower conveying apparatus 50 to the example, the shape and structure of the lower conveying apparatus which conveys the lower cloth 8 may differ from the said embodiment. .

  The upper sensor unit 85 of the above embodiment is an optical sensor that integrally includes the upper light emitting unit 85A and the upper light receiving unit 85B, 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 unit 85 of the above embodiment is supported at the same height position R as the rotation 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 reflected light from the upper transport roller 12 reaching the upper light receiving portion 85B can be minimized.

  In the above embodiment, the upper sensor unit 85 fixes the reflecting plate 28 that reflects the light emitted from the upper light emitting unit 85A to the bottom surface of the concave portion 26B provided on the inclined surface 26A of the upper support unit 26 of the nozzle 24. As long as the position is between the pressure contact point of the upper transport roller 12 and the lower transport roller 64 and the discharge port 27, for example, it may be provided at another part of the nozzle 24. The upper support portion 26 preferably includes a portion extending downstream in the transport direction from the discharge port 27, and the reflecting plate 28 is preferably fixed to the portion. The upper support portion 26 may not include the concave portion 26B. At this time, the upper support portion 26 may be provided with a convex portion protruding rearward from the slope 26A, and the reflective plate 28 may be provided on the convex portion. The reflection plate 28 may be provided on the slope 26 </ b> A of the upper support portion 26. At this time, it is preferable that the reflecting plate 28 is a reflecting member that retroreflects the light emitted from the upper light emitting portion 85A.

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

DESCRIPTION OF SYMBOLS 1 Cloth bonding apparatus 7 Upper cloth 7A Upper specific end part 8 Lower cloth 8A Lower specific end part 12 Upper conveyance roller 12A Rotating shaft 24 Nozzle 26 Upper support part 26B Recessed part 27 Discharge port 28 Reflecting plate 35 Supply mechanism part 42 Upper clamping roller 57 First cross plate 58 Second cross plate 59 Nozzle plate 64 Lower conveying roller 76 Lower clamping 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 for supporting the lower sheet from the lower side;
Provided between the lower sheet and the upper sheet overlapping the lower sheet from the upper side, an upper support part for supporting the upper sheet from the lower side, and an adhesive facing the adhesive surface of the lower sheet below the upper support part A nozzle having a discharge port for discharging
A supply mechanism for supplying the adhesive to the nozzle;
A transport mechanism that transports the lower sheet, to which the adhesive is attached, on the downstream side in the transport direction of the lower sheet and the upper sheet with respect to the nozzle, and transports the upper sheet in the transport direction with the upper sheet sandwiched vertically. ,
Driving and controlling the transport mechanism and the supply mechanism to discharge the adhesive from the discharge port, and on one side of a specific direction orthogonal to the transport direction and the up-down direction among the adhesive surfaces of the lower sheet While applying the adhesive to the lower specific end that is a portion, the lower specific end and the upper specific end that is the end of the upper sheet on the other side opposite to the one side are bonded to each other. In a bonding apparatus including a discharge conveyance control unit that conveys
A lower clamping roller that protrudes upward from the lower support portion on the upstream side in the conveyance direction with respect to the nozzle, is rotatable about the conveyance direction as an axial direction, and contacts the lower sheet;
A support member that extends in the specific direction and the transport direction, sandwiches the lower sheet between the lower clamping rollers, and supports the upper sheet from below;
An upper clamping roller that is rotatable about the conveying direction as an axial direction and sandwiches the upper sheet with the support member from above;
A lower motor for driving the lower clamping roller;
An upper motor for driving the upper clamping roller;
A lower detection unit that detects whether or not the lower specific end is at a lower detection position that is a predetermined position in the transport direction;
An upper detection unit that detects whether or not the upper specific end is at an upper detection position that is a predetermined position in the transport direction;
A motor control unit that controls the lower motor and the upper motor when the discharge conveyance control unit controls the conveyance mechanism and the supply mechanism;
The motor controller is
When the lower detection unit detects that the lower specific end is at the lower detection position, the lower clamping roller is rotationally driven in the first output direction, and the lower sheet is moved 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 clamping roller is rotationally driven in a second output direction opposite to the first output direction, and the lower sheet is moved to the lower detection position. A lower motor controller that moves to one side;
When the upper detection unit detects that the upper specific end is at the upper detection position, the upper clamping roller is rotationally driven in a third output direction, and the upper sheet is moved to the one side, When the upper detection unit detects that the upper specific end is not present at the upper detection position, the upper clamping roller is rotationally driven in a fourth output direction opposite to the third output direction, and the upper sheet is moved to the upper detection position. 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 clamping roller in the transport direction,
The upper detection position is a position between a discharge point and a pressure-bonding point at which the transport mechanism presses the lower sheet and the upper sheet in the transport direction. The upper detector is
A light emitting unit for emitting light;
A reflecting portion that reflects light emitted from the light emitting portion;
A light receiving portion for receiving the reflected light reflected by the reflection portion;
With
The bonding apparatus according to claim 1, wherein the reflection portion is provided on the opposite side to the light emitting portion with respect to the upper detection position. The reflection part is on the downstream side in the transport direction from the discharge port in the upper support part,
The bonding apparatus according to claim 2, wherein the light emitting unit is located above the reflecting unit. 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 overlaps the lower sheet and is rotatable about a rotation axis extending in the specific direction, and is in contact with the upper surface of the upper sheet;
By being arranged on the lower side of the lower sheet and opposed to the upper roller, and being rotatable about a rotation axis parallel to the rotation axis of the upper roller, and contacting the lower surface of the lower sheet A lower roller for sandwiching the upper sheet and the lower sheet with the upper roller,
The upper detection unit includes an integrated light projecting / receiving unit having the light emitting unit and the light receiving unit,
The bonding apparatus according to claim 3, wherein the light projecting / receiving unit is disposed at a height position equal to or lower than the rotational axis of the upper roller. A light projecting / receiving unit supporting member that extends downward from a position above the upper roller and supports the light projecting / receiving unit at a lower end;
The light emitting and receiving unit support member is
An arm portion extending downward from the upper position;
Connected to the lower end of the arm, and a fixing part for fixing the light projecting and receiving part,
The bonding apparatus according to claim 4, wherein when the upper roller is viewed from the upstream side in the transport direction, the arm portion is disposed on the specific direction side with respect to the upper roller. The upper support portion has a recess recessed downward,
The bonding apparatus according to claim 3, wherein the reflecting portion is disposed in the concave portion. The bonding apparatus according to claim 3, wherein the reflection portion is a reflection member that retroreflects the light emitted from the light emitting portion.

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