JP6521764B2 - Label sewing device - Google Patents

Description

  The present invention relates to a label sewing apparatus.

  A strip-shaped label is sewn in between the fabric of the sewing product and information on the sewing product and handling precautions. This label is received by the label transfer device from a label supply device provided side by side with the sewing machine, and in a clamped state, the label is transferred to the sewing machine and transferred to the presser foot of the sewing machine for sewing.

  Since the label is sewn on its one end side, the label conveying device of the label sewing device clamps the other end of the label with a pair of clamp members and extends the one end side to the sewing machine side in a sewing machine (For example, refer patent document 1).

Patent No. 2563658

However, since the conventional label conveying apparatus clamps and conveys a label with a pair of clamp members, it was able to convey the label one by one.
For this reason, it has not been possible to meet the request to stack a plurality of labels one at a time.
Further, it is also conceivable to increase the number of clamp members of the label conveying device to increase the number of labels that can be conveyed at one time, but in that case, the increase in the size of the head of the conveying device and the increase in the number of parts Problems have arisen, and it has been difficult to maintain an orderly superposition when receiving labels sequentially from multiple label feeders.

  An object of the present invention is to provide a label sewing device that holds and conveys a plurality of labels in a favorable manner while suppressing an increase in the number of parts.

The invention according to claim 1 is
In the label sewing device
A label supply device for supplying labels to be sewn onto a fabric;
A label conveyance device for conveying the label supplied from the label supply device;
And a sewing machine for sewing the label conveyed by the label conveyance device to the cloth;
The label transport device
A lower clamp member and two upper clamp members for clamping the label in a state in which one end of the label extends along a direction orthogonal to the transport direction;
Having two actuators individually switching the two upper clamp members between the clamping state and the releasing state;
The two upper clamp members are arranged such that the grips for clamping the label do not overlap each other,
Only one of the upper clamp members receives the label from the label supply device while maintaining the clamp state;
Switching the other upper clamp member to a clamping state so as to clamp from above the received label;
Thereafter, a control device is provided which performs operation control for switching the one upper clamp member to the released state with respect to the two actuators.

The invention according to claim 2 is the label sewing apparatus according to claim 1.
The control device controls the two actuators so that an upper clamp member maintaining a clamp state when receiving the label from the label supply device alternately switches every time the label is received. Do.

The invention according to claim 3 is the label sewing apparatus according to claim 1
The control device is characterized in that the upper clamp member maintaining the clamp state when receiving the label from the label supply device controls the two actuators so that it is always constant every time the label is received. The label sewing device according to claim 1.

The invention according to claim 4 is the label sewing device according to claim 3.
The two upper clamp members are arranged side by side with the respective grips along the extension direction of the label,
The control device is characterized in that the upper clamp member, which is on the front side in the extending direction, controls the two actuators so as to maintain a clamp state when receiving the label from the label supply device.

The invention according to claim 5 is the label sewing apparatus according to any one of claims 1 to 4,
Each of the two upper clamp members is characterized in that the grip portion is plate-shaped.

  In the present invention, the control device switches the other upper clamp member to the clamp state so that the label is received from the label supply device while only one upper clamp member is in the clamp state and the label is clamped from the received label. Then, one of the upper clamp member and the other upper clamp member is one of the upper clamp member when the label is supplied, since the operation control for switching the upper clamp member to the released state is performed on the two actuators. It is possible to always clamp the stacked labels, clamp and transport a plurality of labels in an overlapping state, and it is possible to stack a plurality of more labels and sew them at one time.

  In addition, since it is possible to clamp more labels with only two upper clamp members, it is possible to miniaturize the label conveying apparatus and reduce the number of parts even when a plurality of more labels are overlapped and sewed at one time. It becomes possible.

It is a perspective view of a label sewing device. It is a control block diagram showing control composition of a label sewing device. It is a perspective view around a sewing needle of a sewing machine. It is a perspective view around a sewing needle of a sewing machine. It is a perspective view of a label supply apparatus. It is a perspective view of a label supply apparatus. It is a longitudinal cross-sectional view of a label storage part. It is a front view of a transfer part. It is a perspective view of a label conveyance apparatus. It is a perspective view of the 1st and 2nd clamp mechanism circumference. It is a flow chart which shows label sewing sewing operation. It is a continuation flow chart of Drawing 11 showing label sewing sewing operation. It is operation | movement explanatory drawing which shows the operation state of a 1st and 2nd clamp mechanism. It is operation | movement explanatory drawing which shows the operation state of a 1st and 2nd clamp mechanism. It is process drawing which showed the upper and lower clamp members and the label by the schematic diagram. It is process drawing of the continuation of FIG. 15 which showed the upper and lower clamp members and the label with a schematic diagram. FIG. 17 is a process diagram continued from FIG. 16 schematically showing upper and lower clamp members and a label. FIG. 18 is a process diagram continued from FIG. 17 schematically showing upper and lower clamp members and a label. FIG. 19 is a process drawing of the continuation of FIG. 18 schematically showing the upper and lower clamp members and the label. FIG. 20 is a process diagram continued from FIG. 19 schematically showing upper and lower clamp members and a label. FIG. 21 is a process drawing of the continuation of FIG. 20 schematically showing upper and lower clamp members and a label.

[Outline of Label Sewing Device]
Hereinafter, the label sewing device 10 of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the label sewing device 10, and FIG. 2 is a control block diagram showing a control configuration of the label sewing device 10. As shown in FIG. As illustrated, the label sewing device 10 includes three label supplying devices 20A, 20B, 20C for supplying labels L1, L2, L3 to be sewed onto the fabric C of a sewn product, and the label supplying devices 20A, 20B, 20C. Label conveying device 40 for conveying the labels L1, L2 and L3 supplied from the above, a sewing machine 60 for sewing the labels L1, L2 and L3 conveyed by the label conveying device 40 to the cloth C, and the entire label sewing device 10 And a table 11 for mounting and supporting the entire configuration.
In the following description, the horizontal direction in which the label L is transported is taken as an X-axis direction, a horizontal direction perpendicular to the X-axis direction as a Y-axis direction, and a vertical up-down direction as a Z-axis direction.

Although the labels supplied from the three label supply devices 20A, 20B, and 20C are described separately from L1, L2, and L3, if there is no need to distinguish between them, the labels are collectively referred to as label L. It shall be stated.
Also, although the three label supply devices 20A, 20B, and 20C arranged in order from the upstream side in the transport direction are distinguished and described, they are collectively referred to as the label supply device 20 unless it is necessary to distinguish them. It shall be stated.
Further, since the configurations of the label supply devices 20A, 20B and 20C are the same, in FIG. 2, the configuration is described only for the label supply device 20A, and the description of the configurations for the label supply devices 20B and 20C is omitted.

[sewing machine]
3 and 4 are perspective views of the periphery of the sewing needle 61 of the sewing machine 60. FIG.
As shown in FIGS. 1 and 2, the sewing machine 60 includes a sewing machine frame 62, a sewing machine motor 63 for moving the sewing needle 61 up and down by a needle raising and lowering mechanism (not shown), a work table 64 having a horizontal upper surface, and a work table 64. A lower plate 65 for placing the fabric C thereon, a first holding frame 66 for holding the fabric C from above the lower plate 65, a second holding frame 67 for pressing the label from above the lower plate 65, A support base 68 for supporting the first and second holding frames 66 and 67 so as to move up and down, an X-axis motor 69 for moving the support base 68 arbitrarily along the X-axis direction, and a support base 68 in the Y-axis direction A Y-axis motor 70 which is arbitrarily moved along, a first frame elevating air cylinder 71 which raises and lowers the first holding frame 66, and a second frame elevating air cylinder 72 which raises and lowers the second holding frame 67. Not shown, hook mechanism, balance, thread tension etc. Eteiru.

  The lower plate 65 is a rectangular flat plate and is fixedly supported by the lower portion of the support table 68, and the flat plate surface is horizontal. The lower plate 65 is formed with a through hole 651 through which the sewing needle 61 is inserted. The through hole 651 is an elongated hole along the X-axis direction suitable for sewing the label L.

  The first holding frame 66 is a rectangular frame of approximately the same size as the lower plate 65, and the central portion thereof is wide open. The first holding frame 66 is raised and lowered by the first frame raising and lowering air cylinder 71 and is lowered to hold the cloth C placed on the lower plate 65 and moved together with the support base 68 and the lower plate 65 Enable positioning.

The second holding frame 67 is a frame smaller than the first holding frame 66, and is disposed inside the opening of the first holding frame 66. The second holding frame 67 is lifted and lowered by the second frame lifting air cylinder 72, and is lowered to hold the label L on the cloth C placed on the lower plate 65, and the support table 68, It is possible to move and position along with the lower plate 65 and the first holding frame 66.
Further, the second holding frame 67 is formed with a through hole 671 through which the sewing needle 61 is inserted. The through hole 671 is a long hole along the X-axis direction suitable for sewing the label L.

  The support base 68 is slidably supported along the X-axis direction and the Y-axis direction on the upper surface of the sewing machine bed portion of the sewing machine frame 62, and the X-axis direction and the Y axis are obtained by the X-axis motor 69 and the Y-axis motor 70 described above. It is arbitrarily positioned in the axial direction. In the positioning operation of the support base 68, the control device 90 controls the X-axis motor 69 and the Y-axis motor 70 based on sewing data in which movement amounts to a plurality of needle drop positions constituting a prescribed sewing pattern are recorded. Is executed by

[Label supply device]
5 and 6 are perspective views of the label supply device 20, and FIG. 7 is a longitudinal sectional view of a label storage unit 22 described later. The label supply device 20 will be described based on FIGS. 1, 2 and 5 to 7. In the following description, one side in the Y-axis direction, the label conveying device 40 side with respect to the label supply device 20 is the “front side”, and the opposite side is the “back side”. In addition, the sewing machine side with respect to the label conveyance device 40 is the “downstream” side, and the opposite direction is the “upstream” side, which is one direction in the X-axis direction.

Three label supply devices 20A, 20B, 20C are arranged side by side sequentially from the upstream along the label conveyance path by the label conveyance device 40, and the label supply devices 20A, 20B, 20C are arranged in order from the upstream side The labels L1, L2, and L3 are delivered to the label transport device 40.
Since all three label supply devices 20A, 20B, and 20C have the same structure, only one label supply device 20 will be described in the following description.

  The label supply device 20 labels the transfer position from the label storage unit 22 to the label transfer device 40 by the label storage unit 22 in which a plurality of labels L are stacked and the two nozzles 311 and 311 for sucking and adsorbing the label L. A transport unit 30 for transporting L, and a support frame 21 for supporting the label storage unit 22 and the transport unit 30 are provided.

[Label supply device: Support frame]
The support frame 21 includes a flat base 211 having a horizontal upper surface, a rectangular support bracket 212 fixed to the lower surface of the base 211, and a Y-Z plane at the end of the base 211 in the X axis direction. And a side wall portion 213 fixedly mounted in a state of being erected.
The support frame 21 supports the entire configuration of the label supply device 20. As described above, although three label feeding devices 20 are mounted on the label sewing device 10, each label feeding device 20 supports the entire configuration by the support frame 21 so that the individual label feeding devices 20 can It is unitized individually.
The support frame 21 can be attached to and detached from the table 11 so as to be adjacent to the label conveyance path of the label conveyance device 40. This attachment / detachment structure can be realized by, for example, screwing or other known attachment structures.
Further, a plurality of label supply devices 20 can be attached along the label transfer path of the label transfer device 40 by the support frame 21. That is, the unitized label supply apparatus 20 can be easily expanded or reduced.

[Label supply device: label storage section]
The label storage unit 22 encloses the rectangular strip-shaped labels L from four sides and lifts up the label L in the stack unit 23 and the stack unit 23 that stores a plurality of labels L in a stack state in the vertical direction. An elevation mechanism 25 is provided to maintain the height of the uppermost label L at a predetermined target height.

The laminated portion 23 includes first to fourth wall plates 231 to 234 which surround the label L along the four sides of the label L from four sides.
The first and second wall plates 231 and 232 are bent flat plates having an L-shaped cross section, and include a horizontal portion and an erected portion along the YZ plane. The erected portions of the first and second wall plates 231 and 232 are disposed so as to be closely opposed to two sides along the Y-axis direction of the label L, and the first and second wall plates 231 and 232 The plurality of labels L sandwiched and stacked between the erected portions can be properly positioned in the X-axis direction.
Further, in the horizontal portions of the first and second wall plates 231 and 232, two long holes 231a (long holes of the second wall plate 232 are not shown) are formed along the X-axis direction. It is being fixed to the upper surface of base 211 by the conclusion of screw 231b (the screw by the side of the 2nd wall board 232 omits illustration). By loosening the screw 231b, the first and second wall plates 231, 232 can be positionally adjusted along the X-axis direction, and the label L of any width in the X-axis direction can be arbitrarily positioned in the X-axis direction Can be stored.
That is, the configuration of the first and second wall plates 231 and 232, the elongated hole 231a and the screw 231b functions as a position adjusting mechanism that adjusts the end position of the plurality of labels L stacked.

The third and fourth wall plates 233 and 234 are bent flat plates having an L-shaped cross section, and include a horizontal portion and an erected portion along the XZ plane. The erected portions of the third and fourth wall plates 233, 234 are disposed so as to be closely opposed to two sides along the X-axis direction of the label L, respectively, of the third and fourth wall plates 233, 234. The plurality of labels L sandwiched and stacked between the erected portions can be properly positioned in the Y-axis direction.
Further, two long holes 234a along the Y-axis direction are formed in the horizontal portion of the fourth wall plate 234, and fixed to the upper surface of the base 211 by fastening the screws 234b. By loosening the screw 234b, the fourth wall plate 234 can be positionally adjusted along the Y-axis direction, and can store the label L of any length in the Y-axis direction.
That is, the configuration of the fourth wall plate 234, the elongated hole 234a and the screw 234b functions as a position adjusting mechanism that adjusts the end position of the plurality of labels L stacked.

  The third wall plate 233 is for positioning the end of the label L on the back side in the Y-axis direction, and the end of the label L on the back side in the Y-axis direction is sewn to the cloth C. Since the position adjustment of the third wall plate 233 is possible because it is a site to be performed, there is a concern that the sewing allowance may fluctuate or the needle drop position may deviate from the needle drop position. It is being fixed by the screw 233b so that it can not do.

In addition, at the upper end of the standing portion of the first and second wall plates 231 and 232, a first height detection unit for detecting that the label L at the uppermost position has a prescribed target height is provided. A light emitting element 235 and a light receiving element 236 are provided.
The light emitting element 235 and the light receiving element 236 are disposed to face each other such that the optical axis is on the same axis along the X-axis direction, and the height of the optical axis corresponds to the definition of the label L laminated on the laminated portion 23 The target height of is set. The specified target height is a height suitable for the nozzles 311 and 311 of the transfer unit 30 to adsorb the label L at the uppermost position.
The plurality of labels L stacked in the stacking unit 23 are lifted by the lifting mechanism 25. However, when the label L at the uppermost position reaches a prescribed target height, the light receiving element 236 receives the light emitted from the light emitting element 235 Can be detected from the change in the amount of received light that the label L at the uppermost position is at the prescribed target height.

  In addition, although the structure of the sensor which the light emitting element 235 and the light receiving element 236 isolate | separated was illustrated as a 1st height detection part, it not only this but a light emitting element and a light receiving element are arrange | positioned on the same surface, and integrated. You may use the sensor which you In this case, the optical axis of the light emitting element and the optical axis of the light receiving element are disposed at the specified target height, and the label L at the uppermost position of the plurality of labels L raised by the lifting mechanism 25 is the specified target height. The light emitted from the light emitting element 235 is reflected by the stacked label L, and the reflected light is received by the light receiving element, and the label L at the uppermost position is at the specified target height from the change in the amount of light received. It can be detected.

  The elevating mechanism 25 includes a rectangular elevating plate 251 as a placement unit disposed at the bottom of the surrounding area of the label storage unit 22 by the first to fourth wall plates 231 to 234, and a central portion of the elevating plate 251. An elevator shaft 252, the upper end of which is fixed to the lower surface side, two slide bearings 253, 253 for supporting the elevator shaft 252 penetrating the base 211 and the support bracket 212 so as to be movable up and down at two points; Supported by the main body, and provided with a feed motor 254 serving as a drive source for raising and lowering operation of the lift plate 251, a main drive gear 255 provided on an output shaft of the feed motor 254, and a large diameter gear 256a and a small diameter gear 256b concentrically integrated. The large diameter gear 256a of the reduction gear 256 is engaged with the main driving gear 255, and the small diameter gear 256b of the reduction gear 256 is formed on the elevating shaft 252. It is made to mesh with the rack teeth 252a that is.

With the above configuration, the lift mechanism 25 can reduce the rotation of the feed motor 254 by the reduction gear 256, convert it into a linear motion, transmit it to the lift shaft 252, and lift and lower the lift plate 251.
A plurality of labels L are placed on the upper surface of the elevating plate 251 in a stacked state, and these labels L can be lifted by the driving of the feed motor 254.
Since it is possible to detect that the label L at the uppermost position has reached a prescribed target height by the light emitting element 235 and the light receiving element 236 constituting the first height detecting section described above, the first height detecting section By controlling the feed motor 254 while monitoring the output of the control unit, the label L in the uppermost position can be maintained at a predetermined target height even when the label L in the stacking unit 23 is reduced by the supply operation of the transfer unit 30. it can.

Further, on the bottom surface of the support bracket 212, an origin sensor 257 for obtaining an origin position of the feed motor 254, which is a stepping motor, is provided. The origin sensor 257 is a proximity sensor for obtaining the origin based on the presence or absence of the lower end portion of the elevating shaft 252 penetrating the support bracket 212.
When the origin is determined by the detection of the origin sensor 257, the control device 90 that controls the delivery motor 254 counts the number of steps that is a drive command to the delivery motor 254 from the origin. That is, the height of the lifting and lowering plate 251 can be obtained from the integrated value of the counted number of steps. That is, the origin sensor 257 and the control device 90 that counts the number of steps of the feed motor 254 cooperate with each other to function as a “second height detection unit that detects the height of the placement unit”.

[Label Supply Device: Transport Unit]
FIG. 8 is a front view of the transfer unit 30. As shown in FIG. As shown in FIGS. 5, 6, and 8, the transfer unit 30 includes a head 31 for holding two nozzles 311 and 311, a slide block 32 for supporting the head 31 so as to be movable up and down, and a slide block 32. A horizontal support portion 33 supports forward movement along the Y-axis direction, which is a horizontal direction, and a transfer operation applying mechanism 34 applies movement of the head 31 in the vertical direction and horizontal movement.

The head 31 holds two nozzles 311 and 311 along the Z-axis direction at the end face on the downstream side in the X-axis direction.
The nozzles 311 and 311 are attached to the head 31 side by side along the Y-axis direction at the same height. The nozzles 311 and 311 are both hollow tubes, and the upper end is connected to a negative pressure source (not shown), such as a compressor, a suction pump, an injector or the like, and the label L is adsorbed at the lower end.

  Further, the nozzles 311, 311 are provided with a switching valve (not shown) capable of switching the strength of the suction force at the time of suction in two steps. The switching valve can be controlled by the controller 90. For example, the controller 90 keeps the suction force weak until the nozzles 311 and 311 adsorb the label L at the uppermost position and pull it up somewhat, and the label L at the uppermost position is After being pulled upward, control is performed to switch the suction force to a strong state. As a result, it can be prevented that two or more labels L are attracted and pulled up, and the labels L can be appropriately supplied one by one.

  Further, a vertical slide shaft 312 erected upward is provided on the upper surface of the head 31, and a rotation preventing projection 313 is provided on the surface on the upstream side in the X-axis direction. The vertical slide shaft 312 is inserted into and supported by the first slide bearing 321 of the slide block 32, and the head 31 can move up and down along the vertical slide shaft 312 with respect to the slide block 32. In addition, the rotation prevention protrusion 313 is inserted in a guide hole formed along the Z-axis direction in a guide plate 323 supported by the slide block 32 in a hanging manner, and when the head 31 moves up and down, the vertical slide shaft Regulate not to rotate around 312.

The horizontal support portion 33 has a horizontal slide shaft 331 whose both ends are fixedly supported by the side wall portion 213 along the Y-axis direction, and Y for guiding the slide block 32 not to rotate around the horizontal slide shaft 331 And a guide plate 332 having a guide hole formed in the axial direction.
On the other hand, the slide block 32 inserts the first slide bearing 321 for inserting and supporting the vertical slide shaft 312 of the head 31 so that the vertical slide shaft 312 can be moved vertically and the horizontal slide shaft 331 and slides along the horizontal slide shaft 331 A movable second slide bearing 322 and a guide plate 323 formed with a guide hole along the Z-axis direction for guiding the head 31 so as not to rotate about the vertical slide shaft 312 are provided.
Further, on the surface of the slide block 32 on the upstream side in the X-axis direction, a rotation preventing protrusion (not shown) inserted into the guide hole of the guide plate 332 is provided in a protruding manner.

Accordingly, the slide block 32 can be reciprocated along the Y-axis direction by the horizontal slide shaft 331 while the rotation of the horizontal slide shaft 331 is suppressed by the guide plate 332.
The head 31 can be reciprocated along the Z-axis direction by the vertical slide shaft 312 while the rotation around the vertical slide shaft 312 is suppressed by the guide plate 323.
That is, as shown in FIG. 8, the head 31 can move arbitrarily along the YZ plane.

The transfer operation applying mechanism 34 is fixedly mounted on the output motor of the transfer motor 341 whose output shaft rotates around the X axis, and the output motor of the transfer motor 341, and is extended in the radial direction centering on the output shaft And an arm member 342 provided with a rotating arm 345.
The transfer motor 341 is fixedly mounted on the surface of the side wall portion 213 on the upstream side in the X-axis direction, and the output shaft thereof penetrates the side wall portion 213 and protrudes from the surface on the downstream side in the X-axis direction.

The arm member 342 is fixedly mounted on the output shaft of the transfer motor 341 protruding from the side wall portion 213 and rotates on the surface of the side wall portion 213 on the downstream side in the X-axis direction. A pin 343 projecting to the downstream side in the X-axis direction is provided at the tip of the pivoting arm 345 of the arm member 342.
On the other hand, a bottomed hole (not shown) is formed along the X-axis direction in the surface on the upstream side of the head 31 in the X-axis direction, and the pin 343 of the arm member 342 is inserted.
Therefore, when the arm member 342 rotates by driving the transfer motor 341, as shown in FIG. 8, the head 31 moves along a semicircular locus as the pin 343 moves.

As shown in FIG. 5, the two nozzles 311 and 311 mounted on the head 31 are in a state where the pivoting arm 345 of the arm member 342 is horizontal and its front end is located on the back side in the Y-axis direction. The label L at the uppermost position of the label storage section 22 is taken as a "suction position" capable of suctioning.
Also, as shown in FIG. 6, the tip of the pivoting arm 345 is rotated 180 ° from the suction position past the top dead center position (the pivoting arm 345 is horizontal and the tip is in the Y-axis direction) The two nozzles 311 and 311 mounted on the head 31 in the state of being positioned on the front side are taken as the “delivery position” for delivering the adsorbed label L to the label transport device 40.
Further, a position between the suction position and the transfer position, where the tip of the pivot arm 345 has passed the top dead center position and rotated 120 ° from the suction position, is referred to as an “intermediate standby position”. At this intermediate standby position, the two nozzles 311 and 311 mounted on the head 31 and the label L adsorbed to them cause interference with the label conveyance device 40 passing near the label supply device 20. It is the position just before. The intermediate standby position is not limited to the position of 120 ° described above, and may be a position as close as possible to the passing position within the range in which the interference does not occur.
Until the slide block 473 of the label transport device 40 described later returns to the transport start position, the two nozzles 311 and 311 are kept waiting at this intermediate standby position, and when the slide block 473 reaches the transport start position, the two nozzles 311, 311 can be moved to the delivery position. Thus, it is possible to supply the label L immediately after the start of conveyance of the slide block 473 while avoiding interference.

The transfer motor 341 is driven only within the range of 180 ° from the above-mentioned "suction position" to the "passing position" where the tip of the rotating arm 345 passes the top dead center position and is rotated 180 °.
Then, as shown in FIG. 6, in the vicinity of the rear end of the side wall portion 213 in the Y-axis direction, the transfer motor so as to face the tip end portion of the rotating arm 345 of the arm member 342 at the “suction position”. An origin sensor 344 is provided to obtain the origin position of 341. The origin sensor 344 is a proximity sensor for obtaining an origin according to the presence or absence of the tip of the pivot arm 345 of the arm member 342.

[Label supply device: label humidifier]
Moreover, the code | symbol 35 shown in FIG.5 and FIG.6 is a label humidifier | moistener which moistens the label L of the top position laminated | stacked on the lamination part 23 of the label storage part 22. As shown in FIG.
The label humidifier 35 is a spray nozzle for spraying a liquid for label humidification, and is connected to a supply source of the liquid and a pressure source for pressurizing the inside of the nozzle. The pressure source for spraying is controlled by the control device 90, and is controlled to spray the liquid immediately before the nozzles 311 and 311 reach the label L at the uppermost position.
The nozzle of the label humidifier 35 is directed obliquely downward from a position obliquely above the label L so as not to interfere with the label L when the label L at the uppermost position is pulled upward by the transfer unit 30. The liquid is sprayed to include the suction positions of the two nozzles 311, 311.
The humidifying liquid may be water or any other liquid such as alcohol which does not contaminate or denature the label L. In addition, it is desirable that the humidifying liquid be volatile.
As described above, the label in the uppermost position is wetted in advance before adsorption by the label humidifying device 35, so that it is difficult to pass air from the gaps of the fibers of the label L, and it is possible to perform good adsorption. . In addition, air is prevented from passing through the fiber gaps of the label L, so adsorption of the label L under the label L at the uppermost position can be suppressed, and sewing errors for sewing two labels by mistake are reduced. It becomes possible.

[Label transport device]
FIG. 9 is a perspective view of the label conveyance device 40, and FIG. 10 is a perspective view of the periphery of each clamp mechanism.
The three label supply devices 20 are arranged side by side along the X-axis direction, and deliver the labels L1, L2 and L3 to the label transfer device 40 in order from the upstream side. At this time, each of the label supply devices 20 stands by in a state in which the end portion of the labels L1 to L3 on the front side in the Y axis direction is extended to the label transfer device 40 side, and the label transfer device 40 The labels L1, L2, and L3 are sequentially stacked on top of each other while receiving the labels L1, L2, and L3 toward the downstream side of the direction, and are supplied to the pressing position of the second holding frame 67 of the sewing machine 60 in that state.

  The label transport device 40 includes a first clamp mechanism 41 having a first upper clamp member 411, a second clamp mechanism 42 having a second upper clamp member 421, and the And a lower clamp member 44 commonly used in the second clamp mechanism 41 and 42, a clamp release mechanism 45 for releasing the clamp state of the first and second clamp mechanisms 41 and 42, and the first and second clamp mechanisms. A clamp lifting mechanism 46 for simultaneously lowering the clamp mechanisms 41 and 42 and the lower clamp member 44; and a clamp transport mechanism 47 for transporting the first and second clamp mechanisms 41 and 42 and the lower clamp member 44 along the X axis. Is equipped.

[Label transport device: clamp transport mechanism]
As shown in FIG. 9, the clamp transport mechanism 47 includes a base plate 471 which is a long flat plate covering the entire range of label transport, and a slide guide 472 provided on the base plate 471 along the X-axis direction. , A slide block 473 as a carrier sliding along the slide guide 472, a support bracket 474 provided on the slide block 473 and supporting the clamp lift mechanism 46, and a slide block 473 along the slide guide 472. And a movable portion 48 to be driven.

The base plate 471 is fixedly mounted on the table 11 in a state in which the longitudinal direction is along the X-axis direction.
The slide guide 472 is a rail which is formed to be somewhat longer than the entire length of the label conveyance operation and in which a groove is formed over the entire length.
The slide block 473 can be prevented from coming off by fitting in the recessed groove, and can slide along the slide guide 472 in such a state.

  The movable portion 48 is provided at the end on the upstream side of the upper surface of the base plate 471 in the X-axis direction, and is provided on the output motor of the transport motor 481 serving as a drive source for clamp transport and the transport motor 481. A main driving pulley, a driven pulley (not shown) provided at the end of the upper surface of the base plate 47 on the downstream side in the X-axis direction and rotatably supported in the pulley base 482, and is stretched between the main driving pulley and the driven pulley Timing belt 483, first to third receiving position detecting sensors 491, 492, 493 for detecting that the slide block 473 is at the label receiving position from the label supply device 20A, 20B, 20C, and slide block 473 And a feed position detection sensor 494 for detecting that the label feed position to the sewing machine 60 is present.

  The main driving pulley and the driven pulley are both supported so as to be rotatable about the Z axis, and the timing belt 483 is stretched in a state in which the longitudinal direction is elongated along the X axis direction when viewed from above . The slide block 473 described above is connected to the timing belt 483, and can be moved along substantially the entire length of the slide guide 472 by driving the transfer motor 481.

Further, in the movement range of the slide block 473, first to third receiving position detection sensors 491, 492, 493 and a supply position detection sensor 494 are juxtaposed side by side from the upstream side in the X-axis direction.
The first receiving position detection sensor 491 is a proximity sensor that detects the arrival of the slide block 473, and the first receiving position detection sensor 491 performs the first and second clamping mechanisms on the label L1 that the label supply device 20A delivers. It is arranged to detect the slide block 473 when the clamps 41 and 42 are in the clampable position.
The second receiving position detection sensor 492 is a proximity sensor that detects the arrival of the slide block 473, and the second receiving position detection sensor 492 is the first and second clamping mechanism for the label L2 that the label supply device 20B delivers. It is arranged to detect the slide block 473 when the clamps 41 and 42 are in the clampable position.
The third receiving position detection sensor 493 is a proximity sensor that detects the arrival of the slide block 473, and the third receiving position detection sensor 493 is a first clamping mechanism and a second clamping mechanism for the label L3 that the label supply device 20C delivers. It is arranged to detect the slide block 473 when the clamps 41 and 42 are in the clampable position.
The supply position detection sensor 494 is a proximity sensor that detects the arrival of the slide block 473, and the supply position detection sensor 494 is configured to set the labels L1 to L3 clamped by the first and second clamp mechanisms 41 and 42 The second holding frame 67 is arranged to detect the slide block 473 at the position where it can be held.

[Label conveying device: first and second clamp mechanism]
The first and second clamp mechanisms 41 and 42 will be described based on FIG.
The first clamp mechanism 41 includes a first upper clamp member 411, a first clamp air cylinder 412 as an actuator for moving the first upper clamp member 411 up and down, and a first clamp air cylinder 412. A connector 413 connecting the plunger and the first upper clamp member 411 is provided.
The second clamp mechanism 42 includes a second upper clamp member 421, a second clamp air cylinder 422 as an actuator for raising and lowering the second upper clamp member 421, and a second clamp air cylinder. A connecting body 423 connecting the plunger 422 and the second upper clamp member 421 is provided.

The clamping air cylinders 412 and 422 are air cylinders having the same structure, and the dimensions of the respective parts and the strokes of the plungers are the same.
The first and second clamping air cylinders 412 and 422 are integrally formed in such a manner that the operating direction of the plunger is parallel to the Z-axis direction, and the main parts incorporating the pistons have the same height. It is supported by the support block 452 of the clamp release mechanism 45 in the coupled state.

The connecting members 413 and 423 of the clamp mechanisms 41 and 42 are members of the same size and shape, and the base end portions thereof are with respect to the plungers of the first and second clamping air cylinders 412 and 422, respectively. It is attached so as to become the same height.
Each connecting body 413, 423 has a base end fixedly supported by the plunger of each clamp air cylinder 412, 422, and a hanging portion hanging down from the end on the back side in the Y-axis direction of the base end; An extending portion extending from the lower end portion of the hanging portion to the rear side in the Y-axis direction is provided.
And the base end part of the upper clamp member 411,421 is each connected with the lower surface side of each connection body 413,423.
In addition, one insertion block 414 is inserted on the lower surface of the extension portion of the coupling body 423 of the second clamp mechanism 42, and the base end of the second upper clamp member 421 by the thickness of one sheet. It is supported to lower the part.

  The first upper clamp member 411 has a base end 411a connected to the lower surface side of the connector 413, a hanging portion 411b hanging down from the end on the front side in the Y-axis direction of the base end 411a, and a hanging portion An extending portion 411c extending from the lower end portion of the portion 411b to the rear side in the Y-axis direction, and a gripping portion extending from the end portion on the rear side in the Y-axis direction of the extending portion 411c toward the upstream side in the X-axis direction And 411 d.

  The second upper clamp member 421 has a base end 421a connected to the lower surface side of the connector 423 and a hanging portion 421b hanging down from the end of the base end 421a on the back side in the Y-axis direction. An extending portion 421c extending from the lower end portion of the hanging portion 421b to the rear side in the Y-axis direction and an end portion on the rear side in the Y-axis direction of the extending portion 421c extending toward the downstream side in the X-axis direction And a grip portion 421d.

As described above, when the plungers of the first and second clamping air cylinders 412 and 422 are in the retracted state (the state where they do not protrude), the proximal end 421a of the second upper clamp member 421 is the first The insertion block 414 is disposed below the base end 411 a of the upper clamp member 411 by one thickness of the insertion block 414.
For this reason, when the plungers of the first and second clamping air cylinders 412 and 422 are in the retracted state (non-projecting state), the first upper surface of the second upper clamp member 421 is greater than the first grip portion 421d. An elevation difference is generated such that the grip portion 411d of the clamp member 411 is at the top.
In addition, the grip portion 411d of the first upper clamp member 411 is disposed somewhat forward so as not to overlap with the grip portion 421d of the second upper clamp member 421 when being lowered.

In addition, the clamp surface (bottom surface) of the grips 411d and 421d viewed from the direction (the extension direction of the labels L1 to L3, ie, the Y-axis direction) in which the label transport device 40 delivers the labels L1 to L3 to the sewing machine 60. The shape of) is uniformly corrugated along the Y-axis direction. The respective holding portions 411 d and 421 d are formed in the same shape so that the waveform shapes seen from the Y-axis direction match when the heights are equalized.
In addition, the lower clamp member 44 described later has a clamp surface (upper surface) 441 with which the two grips 411d and 421d are in pressure contact, and the waveform shape of the grips 411d and 421d is uniform when viewed from the Y axis direction. Has a waveform corresponding to As a result, the clamp surfaces of the two lowered gripping portions 411d and 421d can be brought into surface contact with the clamp surface 441 of the lower clamp member 44 without any gap.

  As a result, the label L gripped by the grips 411 d and 421 d and the lower clamp member 44 follows the waveform of the ungripped part extended to the sewing machine 60 side, and is perpendicular to the plane of the label L It is possible to increase the rigidity in the direction (Z-axis direction). Therefore, even if the label L is a thin and soft material, the occurrence of sewing defects can be reduced by bending downward or hanging down.

[Label conveying device: clamp release mechanism]
The clamp release mechanism 45 includes a support frame 451 having an L-shaped cross section supported by the clamp lift mechanism 46, a support block 452 for supporting the clamping air cylinders 412 and 422, and a support block 452 for the support frame 451. And a release air cylinder 453 for raising and lowering.

The support frame 451 fixedly supports the base end of the lower clamp member 44 on the lower surface side.
The release air cylinder 453 brings the support frame 451 and the support block 452 close to each other when the plunger retracts, and brings the support frame 451 and the support block 452 apart from each other when the plunger protrudes.
When the plunger of the release air cylinder 453 is retracted, the two upper clamp members 411 and 421 are brought into pressure contact with the clamp surface 441 of the lower clamp member 44 by the projecting operation of the plungers of the clamp air cylinders 412 and 422 for release When the plungers of the air cylinder 453 project, even if the plungers of the two clamping air cylinders 412 and 422 are in the projecting state, they are both released apart from the clamp surface 441 of the lower clamp member 44. The stroke of the air cylinder 453 is set.
That is, even when the labels L1, L2 and L3 are clamped by the upper clamp members 411 and 421, the protruding operation of the plunger by the release air cylinder 453 clamps all the labels L1, L2 and L3. It can be released from

[Label conveying device: lower clamp member]
The lower clamp member 44 has a base end fixedly supported on the lower surface of the support frame 451 of the clamp release mechanism 45, a hanging portion hanging down from the end on the back side in the Y-axis direction of the base end, And an extending portion extending from the lower end to the rear side in the Y-axis direction.
A clamp surface 441 is formed on the top surface of the tip of the extension of the lower clamp member 44. The clamp surface 441 is in contact with the clamp surfaces of the grips 411d and 421d of the upper clamp members 411 and 421.

[Label transport device: clamp lifting mechanism]
The clamp lift mechanism 46 has a lift air cylinder 461 supported by a support bracket 474. The lifting air cylinder 461 can raise and lower the clamp release mechanism 45, the lower clamp member 44, and the first and second clamp mechanisms 41 and 42 at one time through the support frame 451 of the clamp release mechanism 45. .
Normally, the lifting air cylinder 461 is in a state in which the plunger is protruded (raised), and in that state, the lower surface of the extending portion of the lower clamp member 44 is higher than the upper surface of the first holding frame 66 of the sewing machine 60 Are set. In addition, when the plunger of the lifting air cylinder 461 is retracted (lowered), the lower surface of the extending portion of the lower clamp member 44 is set to lower until it sufficiently approaches the upper surface of the lower plate 65 of the sewing machine 60. ing.
This is because the lower clamp member 44 does not interfere with the first holding frame 66 when the label conveyance device 40 conveys the label L to the second holding frame 67 inside the first holding frame 66 of the sewing machine 60. It is to do so. In addition, since it is desirable that the label L be conveyed to the inside of the first holding frame 66 and held by the second holding frame 67, each label L be close to the lower plate 65, the gripped label L It can be lowered.

[Control system of sewing machine]
The control system of the label sewing device 10 will be described based on FIG.
The control device 90 of the label sewing device 10 stores a sewing control program and stores the ROM 92, a CPU 91 that performs various arithmetic processing according to the control program, a RAM 93 used as a work memory in various processing, and various sewing operations. It roughly comprises an EEPROM 94 storing data and setting data.

  The control device 90 includes the sewing machine motor 63 of the sewing machine 60, the X-axis motor 69, the Y-axis motor 70, and the first and second frame lifting air cylinders 71 and 72 via the system bus and the drive circuit. The light emitting element 235, the light receiving element 236, the delivery motor 254, the origin sensor 257, the transfer motor 341, the origin sensor 344 and the label humidifier 35 of the label supply apparatus 20A, 20B, 20C Second clamp air cylinder 412, 422, release air cylinder 453, elevating air cylinder 461, transport motor 481, first to third receiving position detection sensors 491, 492, 493, supply position detection sensor 494, various types Operation input unit 95 for inputting the operation of the Topedaru 96 and the like are connected.

The sewing machine motor 63, the X-axis motor 69, the Y-axis motor 70, the feed-out motor 254, the transfer motor 341, and the transfer motor 481 are all connected to the control device 90 via a motor driver. Illustration is omitted in 2.
In addition, the first and second frame lifting air cylinders 71 and 72, the first and second clamping air cylinders 412 and 422, the releasing air cylinder 453, the lifting air cylinder 461, and the label humidifier 35 may be any one of them. Also, although the control device 90 performs operation control via solenoid valves that supply air pressure to these, these solenoid valves are not shown in FIG.
In addition, the light emitting element 235, the light receiving element 236, the origin sensors 257 and 344, the first to third receiving position detecting sensors 491, 492 and 493, and the supply position detecting sensor 494 are also connected to the control device 90 via a predetermined interface. Although these interfaces are not shown in FIG.

[Label sewing sewing control]
The label sewing operation of the label sewing device 10 performed based on the operation control of the control device 90 will be described based on the flowcharts of FIGS. 11 and 12.
In this label sewing sewing control, the detection position of the first receiving position detection sensor 491 is set as the conveyance start position of the slide block 473 of the label conveyance device 40, and the clamp elevating mechanism 46 The clamp release mechanism 45 holds the clamp air cylinders 412 and 422 downward, and the first clamp mechanism 41 lowers the upper clamp member 411. The second clamp mechanism It is assumed that the upper clamp member 421 is pulled upward.
Further, each of the label supply devices 20A, 20B, 20C is in a state where the head 31 is made to stand by at the intermediate standby position in a state where the labels L1, L2, L3 are adsorbed to the nozzles 311, 311.

  When the start pedal 96 is depressed, the control device 90 operates the first frame lifting air cylinder 71 of the sewing machine 60 to lower the first holding frame 66 (step S1). Thereby, the cloth C set on the lower plate 65 is held by the first holding frame 66.

Next, the control device 90 reads the detection signal of the first reception position detection sensor 491 and determines whether the slide block 473 is in the first reception position for receiving the label L1 from the label supply device 20A (step S3).
When the slide block 473 is not detected by the first receiving position detection sensor 491, the transport motor 481 is driven to move the slide block 473 to the first receiving position (step S5).

  Then, when the slide block 473 is detected by the first receiving position detection sensor 491, the control device 90 stops the transport motor 481 (step S7), and transfers all the label supply devices 20A, 20B, 20C. The drive motor 341 is driven to move the head 31 to the transfer position (step S9). As a result, in each of the label supply devices 20A, 20B, and 20C, the labels L1, L2, and L3 move to the foremost side in the Y-axis direction, and clamping by the clamp mechanisms 41 and 42 becomes possible.

  Next, the control device 90 executes clamp control by cooperation of the first clamp mechanism 41 and the second clamp mechanism 42 of the label transport device 40 (step S11). Thereby, the label L1 is clamped between the first upper clamp member 411 and the lower clamp member 44. At this time, the label L1 has a wave shape over substantially the entire length in the Y-axis direction, so that the rigidity is increased and the horizontally extended state can be maintained.

Here, the clamp control which is commonly executed when the labels L1 to L3 are received from the label supply devices 20A, 20B, and 20C will be described based on the drawings. The same control is executed in this clamp control regardless of which label L1 to L3 is received.
FIGS. 13 and 14 are operation explanatory views showing the operation state of the first and second clamp mechanisms 41 and 42, and FIGS. 15 to 21 are process drawings schematically showing the upper and lower clamp members and the label.

  In the label supply control, the CPU 91 of the control device 90 brings the first upper clamp member 411 of the first clamp mechanism 41 into a lowered clamp state in advance, and the second upper clamp member 421 of the second clamp mechanism 42. Is in the released state as it is raised (see FIGS. 13 and 15).

Then, when the label L1 is received by the supply from the label supply device 20A (see FIG. 16), the CPU 91 lowers the second upper clamp member 421 to bring it into a clamped state with respect to the label L1 (see FIG. 17).
At this time, the label L1 is placed on the first upper clamp member 411, and the label L1 is clamped by only the second upper clamp member 421.

  Then, when the nozzles 311 and 311 of the label supply device 20A retract (see FIG. 18), the CPU 91 raises the first upper clamp member 411 to bring it into a released state (see FIGS. 14 and 19). At this time, since the second upper clamp member 421 clamps the label L1, even if the first upper clamp member 411 ascends, one end of the label L1 is lifted, but the clamp state is maintained. Can.

Then, the CPU 91 lowers the first upper clamp member 411 to bring it into a clamped state (see FIG. 20). As a result, the label L1 is clamped by the first upper clamp member 411 and the second upper clamp member 421.
Further, the CPU 91 raises the second upper clamp member 421 to bring it into the released state (see FIG. 21). As a result, the arrangement of the first upper clamp member 411 and the second upper clamp member 421 returns to the state immediately before the label L1 is supplied, so when the label L2 is newly supplied next time, By repeating the operation control of FIGS. 15 to 21, the labels L1 and L2 can be overlapped and clamped in order. The same applies to the case where the label L3 is supplied.

  As described above, in the clamp control, the first upper clamp member 411 mainly serves to clamp the label L, and when a new label L is supplied, the second upper clamp member 421 temporarily Clamping is performed, while the first upper clamp member 411 is moved above the overlapped label L to perform clamping again, so that the total thickness of the plurality of stacked labels L is within the clampable range. As long as it is, it is possible to receive the label L repeatedly and clamp it.

Then, when the clamp control is finished, the control device 90 drives the transport motor 481 to transport the slide block 473 to the downstream side (step S13).
Further, at the same time as the conveyance of the slide block 473 is started, the label humidifying device 35 of the label supply device 20A is operated to humidify the label L1 at the uppermost position of the stacking unit 23 (step S15).

Next, the head 31 of the label supply device 20A is moved to the suction position, and the topmost label L1 is suctioned by the nozzles 311 and 311 (step S17).
At this time, the control device 90 controls a switching valve (not shown) in advance so that the suction force of each of the nozzles 311, 311 becomes weak. That is, the label L1 at the uppermost position is adsorbed with a weak suction force.

  Then, the transfer motor 341 is driven to transfer the head 31 to the intermediate standby position (step S19). Further, the control device 90 controls the switching valve so that the suction force of each of the nozzles 311, 311 becomes stronger in the process of moving the head 31 from the suction position to the intermediate standby position. The timing of this switching may be, for example, measuring the elapsed time from the start of driving of the transfer motor 341, switching may be performed after a predetermined time has elapsed, or the number of drive pulses of the transfer motor 341 is counted. Switching may be performed by the number of pulses.

  Further, the control device 90 reads the detection signal of the light receiving element 236 of the label supply device 20A, and the plurality of labels L1 stacked is driven by the feed motor 254 so that the label L1 at the uppermost position becomes the target height. Raise (step S21).

Next, the control device 90 reads the detection signal of the second receiving position detection sensor 492 and determines whether the slide block 473 has reached a second receiving position for receiving the label L2 from the label supply device 20B ( Step S23).
Then, when the slide block 473 is not detected by the second receiving position detection sensor 492, the conveyance is continued, and when the slide block 473 is detected by the second receiving position detection sensor 492, the control device 90 And the conveyance motor 481 are stopped (step S25).

  Next, the control device 90 causes the label conveyance device 40 to execute the second clamp control on the label L2 at the delivery position by the label supply device 20B (step S27, see FIGS. 15 to 21). Thereby, the label L2 is clamped between the first upper clamp member 411 and the lower clamp member 44 in a state where the label L2 overlaps the label L1. At this time, the label L2 also has a wave-like shape over substantially the entire length in the Y-axis direction, and the rigidity is increased, and the horizontally extended state can be maintained.

Then, the control device 90 drives the transport motor 481 to transport the slide block 473 to the downstream side (step S29).
Further, at the same time as the conveyance of the slide block 473 is started, the label humidifying device 35 of the label supply device 20B is operated to humidify the label L2 at the uppermost position of the stacking unit 23 (step S31).

Next, the head 31 of the label supply device 20B is moved to the suction position, and the topmost label L2 is suctioned by the nozzles 311 and 311 (step S33).
Then, the transfer motor 341 is driven to transfer the head 31 to the intermediate standby position (step S35). Also at this time, the control device 90 weakens the suction force until the head 31 moves to the intermediate standby position from the suction position, and controls the switching valve so that the suction force becomes strong in the middle.

  Further, the control device 90 reads a detection signal of the light receiving element 236 of the label supply device 20B, and the plurality of labels L2 stacked is driven by the feed motor 254 so that the label L2 at the uppermost position becomes the target height. Raise (step S37).

Next, the control device 90 reads the detection signal of the third receiving position detection sensor 493, and determines whether the slide block 473 has reached the third receiving position for receiving the label L3 from the label supply device 20C (see FIG. Step S39).
Then, when the slide block 473 is not detected by the third reception position detection sensor 493, the conveyance is continued, and when the slide block 473 is detected by the third reception position detection sensor 493, the control device 90 And stop the transfer motor 481 (step S41).

  Next, the control device 90 causes the label conveyance device 40 to execute the third clamp control on the label L3 at the delivery position by the label supply device 20C (step S43, see FIGS. 15 to 21). As a result, the label L3 is clamped between the first upper clamp member 411 and the lower clamp member 44 in a state where the label L3 overlaps the labels L1 and L2. At this time, the label L3 also has a wave shape over substantially the entire length in the Y-axis direction, so that the rigidity is increased and the horizontally extended state can be maintained.

Then, the control device 90 drives the transport motor 481 to transport the slide block 473 to the downstream side (step S45).
Further, at the same time as the conveyance of the slide block 473 is started, the label humidifying device 35 of the label supply device 20C is operated to humidify the label L3 at the uppermost position of the stacking unit 23 (step S47).

Next, the head 31 of the label supply device 20C is moved to the suction position, and the topmost label L3 is suctioned by the nozzles 311 and 311 (step S49).
Then, the transfer motor 341 is driven to transfer the head 31 to the intermediate standby position (step S51). Also at this time, the control device 90 weakens the suction force until the head 31 moves to the intermediate standby position from the suction position, and controls the switching valve so that the suction force becomes strong in the middle.

  Further, the control device 90 reads the detection signal of the light receiving element 236 of the label supply device 20C, and the plurality of labels L3 stacked is driven by the feed motor 254 so that the label L3 at the uppermost position becomes the target height. Raise (step S53).

Next, the control device 90 reads the detection signal of the supply position detection sensor 494, and the labels L1 to L3 clamped between the first upper clamp member 411 and the lower clamp member 44 on the slide block 473 are the first It is determined whether or not the holding position by the second holding frame 67 inside the holding frame 66 has been reached (step S55).
Then, when the slide block 473 is not detected by the supply position detection sensor 494, the conveyance is continued, and when the slide block 473 is detected by the supply position detection sensor 494, the control device 90 operates the conveyance motor 481. It is stopped (step S57).

Next, the control device 90 operates the elevating air cylinder 461 of the clamp elevating mechanism 46 of the label transfer device 40 to lower the upper clamp members 411 and 421 and the lower clamp member 44 (step S59). Thereby, the labels L1 to L3 in the overlapped state are lowered to the upper surface of the lower plate 65 at the lower side of the second holding frame 67.
Then, the control device 90 operates the second frame lifting air cylinder 72 of the sewing machine 60 to lower the second holding frame 67 (step S61). As a result, the second holding frame 67 holds the end on the back side in the Y-axis direction of the labels L1 to L3 in the overlapped state.

  Next, the control device 90 operates the release air cylinder 453 of the clamp release mechanism 45 of the label transfer device 40 to raise the clamp mechanisms 41 and 42 relative to the lower clamp member 44 (step S63). Thus, the upper clamp members 411 and 421 are opened, and the labels L1 to L3 are released.

  Thereafter, the control device 90 controls to perform the return operation of the label conveyance device 40 (step S65). The return operation is the raising operation of each clamp mechanism 41, 42 by the clamp lifting mechanism 46, the lowering operation with respect to the lower clamp member 44 of each clamp mechanism 41, 42 by the clamp release mechanism 45, the upper clamp member of the second clamp mechanism 42 The upward movement operation 421, the conveyance operation to the first receiving position which is the conveyance start position of the slide block 473, and the like.

Then, the control device 90 starts driving the sewing machine motor 63 of the sewing machine 60 to start moving the hands, and in accordance with the sewing pattern for sewing the labels L1 to L3 in synchronization with the needle drop, the X axis motor 69 and Y The axial motor 70 is driven to move the cloth C and the labels L1 to L3, and sewing of the labels L1 to L3 to the cloth C is performed (step S67).
Then, when the movement of the sewing pattern is performed with the specified number of stitches, the sewing operation of the labels L1 to L3 ends.

[Technical effect of the embodiment of the invention]
The label sewing device 10 receives the label L from the label supply device 20 with the first upper clamp member 411 maintained in the clamped state, and the control device 90 clamps the label L from above the received label L. The second upper clamp member 421 is switched to the clamp state, and then the first upper clamp member 411 is switched to the released state, so that clamp control is performed on the first and second clamp air cylinders 412 and 422. When the label L is supplied, the label L in which one of the first upper clamp member 411 and the second upper clamp member 421 is always laminated can be clamped, and a plurality of labels are overlapped. It is possible to clamp and convey, and it is possible to stack a plurality of more labels L and to sew them at one time.

  In addition, since more labels can be clamped only by the two upper clamp members 411 and 421, the size reduction and parts of the label conveyance device 40 even when a plurality of labels L are stacked and sewn at one time It is possible to reduce the score.

Further, in the clamp control, the upper clamp member maintaining the clamp state when receiving the label L from the label supply device 20 in the clamp control always becomes the first upper clamp member 411 every time the label L is received. Thus, the first and second clamping air cylinders 412 and 422 are controlled.
As a result, the upper clamp member clamped at the time of supplying to the sewing machine 60 always becomes the first upper clamp member 411, and it becomes possible to supply the label to the sewing machine 60 in a fixed supply state.

Further, the control device 90 causes the first upper clamp member 411 on the front side with respect to the extension direction of the label L to always maintain the clamp state when receiving the label L from the label supply device 20. The second clamping air cylinder 412, 422 is controlled.
Therefore, when the stacked label L is supplied to the sewing machine 60, the first upper clamp member 411 closer to the needle drop position can be delivered in a clamped state, and the label L is supplied in a well overlapped state. can do. Therefore, it is possible to improve the sewing quality.

  Further, in the label conveying device 40, since the first and second upper clamp members 411 and 421 both have the holding portions 411d and 421d in a flat shape, they are newly supplied from the label supply device 20 in clamp control. When the label L is superimposed on the gripping portion 411d or 421d, the thickness can suppress the occurrence of bending or rising of the end of the label L and the occurrence of the irregular state of the end of the label L depending on the thickness. It is possible to supply the sewing machine with the labels of (1) and (2) in an orderly stacked state and to perform high-sewing sewing.

Further, in the label sewing device 10, the upper clamp members 411 and 421 clamp the label L in a state where the label conveyance device 40 extends one end of the label L along the Y-axis direction orthogonal to the conveyance direction. The upper clamp members 411 and 421 and the lower clamp member 44 have clamp surfaces 441 in surface contact with each other, and the clamp surfaces 441 of the upper clamp members 411 and 421 and the lower clamp member 44 respectively. The shape of the label L as viewed from the extension direction (Y-axis direction) of the label L is a corrugated shape having a curved shape.
Therefore, even when the label L to be clamped is a material that is easily broken downward due to thin, long, soft, etc., the rigidity in the Z-axis direction can be enhanced, and the horizontally extended state can be obtained. It becomes possible to maintain.
For this reason, it is possible to suppress the occurrence of sewing defects due to the bending of the label, and to perform more favorable sewing.

In addition, the label supply device 20 transfers the label from the label storage unit 22 to the delivery position where it is transferred to the label conveyance device 40 by the label storage unit 22 in which a plurality of labels are stacked and the nozzles 311 and 311 that sucks and adsorbs the label L. As a suction control unit that comprises a transfer unit 30 and makes the suction force at the time of suction pulling up of the label L from the label storage unit 22 by the nozzles 311 and 311 of the transfer unit 30 weaker than the suction force during transfer after pulling up. A functioning controller 90 is provided.
For this reason, it is possible to suppress a situation in which each of the nozzles 311 and 311 adsorbs a plurality of labels L in a stacked state, and to transfer the labels stably with a sufficient suction power during transfer. It is possible to do

In addition, the label supply device 20 includes a label humidifying device 35 that wets the label L at the uppermost position stacked in the label storage unit 22.
Therefore, it is possible to reduce the air permeability of the label L at the uppermost position to enhance the adsorptivity and reduce the arrival of the suction force to the label L therebelow, and to adsorb only the label L at the uppermost position more effectively. Is possible. Therefore, the occurrence of the sewing of two or more identical labels can be suppressed, the sewing operation can be performed better and more reliably, and the reliability and the sewing quality can be improved.

In addition, the label storage unit 22 of the label supply device 20 detects a light emitting element 235 and a light receiving element 236 as a first height detection unit that detects that the stacked label L at the uppermost position has a predetermined target height. The lifting mechanism 25 is provided to maintain the height of the uppermost label L at a target height.
For this reason, the label L at the uppermost position can be always maintained at a constant target height by the control of the elevation mechanism 25, and adsorption of the nozzles 311 and 311 can be stably performed.

In addition, the elevation mechanism 25 includes an elevation plate 251 as a placement unit on which the plurality of stacked labels L are placed, and an origin sensor 257 as a second height detection unit that detects the height of the elevation plate 251. And a controller 90.
On the other hand, the label L at the uppermost position is always maintained at a constant target height by the control of the lifting mechanism 25. Therefore, when the height of the lifting plate 251 is detected, the remaining amount of label L is determined by obtaining the distance therebetween. It becomes possible to acquire.

  Moreover, since the label storage part 22 is provided with the position adjustment mechanism which adjusts the edge part position of the some label L laminated | stacked in the 1st, 2nd and 4th wall board 231, 232, 234, various different While it is possible to stack the labels of the size of, it is also possible to adjust the position of the stacking position of the labels.

In addition to providing a plurality (for example, three) of label supply devices 20A to 20C, each of the label supply devices 20A to 20C includes a support frame 21 for supporting the label storage unit 22 and the transfer unit 30. The support frame 21 is detachable from the table 11 adjacent to the transport path of
For this reason, it becomes possible to easily carry out increase and decrease of the number of individuals of the label supply device 20, and at the same time, it is possible to arbitrarily adjust the number of labels to be sewn.

In addition, the label conveying device 40 supports the upper clamp members 411 and 421 and the lower clamp member 44, and from the conveyance start position (first receiving position) in the conveyance path to the sewing machine (supply position) which is the conveyance end position. A slide block 473 as a transport body for moving between the transfer units 30 of the plurality of label supply devices 20A to 20C is a suction position for suctioning the label L from the label storage unit 22, and the nozzles 311 and 311; The transfer unit 30 of the plurality of label supply devices 20A to 20C transfers the slide block 473 to the transfer start position (first receiving position) while transferring to the intermediate standby position between the position and the transfer position and the transfer position. At one time, after transferring the nozzles 311, 311 to the delivery position and passing the label L to the slide block 473, 11,311 and includes a control unit 90 which functions as a supply control unit for controlling so as to transfer the label reservoir 22 to wait after adsorbing the label L at the intermediate standby position.
For this reason, by making the nozzles 311 and 311 of each of the label supply devices 20A to 20C stand by at the intermediate standby position, the interference between the nozzles 311 and 311 and the adsorbed label L and the slide block 473 conveyed is avoided. After the suction operation of the label L is completed, the nozzles 311 and 311 can be brought closer to the delivery position and made to stand by.
Therefore, when the label sewing is performed continuously, it is possible to effectively reduce the cycle time and to improve the working efficiency.

[Another example of clamp control]
In the clamp control described above, the upper clamp member maintaining the clamp state when receiving the label L from the label supply device 20 always becomes the first upper clamp member 411 every time the label is received. The second clamping air cylinder 412, 422 is controlled.
However, the present invention is not limited thereto. For example, the upper clamp member maintaining the clamp state when receiving the label L from the label feeding device 20 always performs the first upper clamp member 411 and the second clamp member 411 every time the label is received. The first and second clamping air cylinders 412 and 422 may be controlled to alternate between the upper clamping member 421 and the other.

  Specifically, with reference to FIGS. 15 to 19 described above, in label supply control, the CPU 91 of the control device 90 clamps the first upper clamp member 411 of the first clamp mechanism 41 in advance. In the state, the second upper clamp member 421 in the second clamp mechanism 42 is in the raised and released state (see FIG. 15).

Then, when the label L1 is received by the supply from the label supply device 20A (see FIG. 16), the CPU 91 lowers the second upper clamp member 421 to bring it into a clamped state with respect to the label L1 (see FIG. 17).
Then, when the nozzles 311 and 311 of the label supply device 20A retract (see FIG. 18), the CPU 91 raises the first upper clamp member 411 to bring it into a released state (see FIGS. 14 and 19).

Here, in a state where the second upper clamp member 421 clamps the label L1, the supply of the next label L is awaited, and when a new label L is supplied on the second upper clamp member 421, After the upper clamp member 411 is lowered to be clamped, the second upper clamp member 421 is raised to be released, and waits for the supply of the next label.
After that, by repeating the same operation control, the labels L can be sequentially stacked and clamped.

  In the case of this clamp control, it is possible to clamp more labels L by the two upper clamp members 411 and 421 as in the first clamp control, and the operation performed when supplying one label L Since the number of processes is small, it is possible to carry out label transportation more quickly.

[Others]
The number of label supply devices 20 is not limited to three but may be more. According to the clamp control performed by the control device 90, the label conveying device 40 can receive more than three labels L and can convey them to the sewing machine 60. be able to.

DESCRIPTION OF SYMBOLS 10 label sewing apparatus 11 table 20, 20A, 20B, 20C label supply apparatus 30 transfer part 31 head 311 nozzle 40 label conveyance apparatus 41 1st clamp mechanism 411 1st upper clamp member 411d grip part 412 1st air for clamp Cylinder (actuator)
42 second clamp mechanism 421 second upper clamp member 421 d grip portion 422 air cylinder for second clamp (actuator)
44 lower clamp member 441 clamp surface 60 sewing machine 90 control device C cloth L, L1, L2, L3 label

Claims (5)

A label supply device for supplying labels to be sewn onto a fabric;
A label conveyance device for conveying the label supplied from the label supply device;
And a sewing machine for sewing the label conveyed by the label conveyance device to the cloth;
The label transport device
A lower clamp member and two upper clamp members for clamping the label in a state in which one end of the label extends along a direction orthogonal to the transport direction;
Having two actuators individually switching the two upper clamp members between the clamping state and the releasing state;
The two upper clamp members are arranged such that the grips for clamping the label do not overlap each other,
Only one of the upper clamp members receives the label from the label supply device while maintaining the clamp state;
Switching the other upper clamp member to a clamping state so as to clamp from above the received label;
Thereafter, a control device for performing operation control for switching the one upper clamp member to the released state is provided to the two actuators.   The control device controls the two actuators so that an upper clamp member maintaining a clamp state when receiving the label from the label supply device alternately switches every time the label is received. The label sewing device according to claim 1.   The control device is characterized in that the upper clamp member maintaining the clamp state when receiving the label from the label supply device controls the two actuators so that it is always constant every time the label is received. The label sewing device according to claim 1. The two upper clamp members are arranged side by side with the respective grips along the extension direction of the label,
The control device is characterized in that the upper clamp member, which is on the front side in the extending direction, controls the two actuators so as to maintain the clamp state when receiving the label from the label supply device. The label sewing device according to Item 3.   The label sewing device according to any one of claims 1 to 4, wherein the two upper clamp members each have a plate-like grip.

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