JP3836545B2 - Label sticking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a label sticking apparatus, and more particularly, to a label sticking apparatus for sticking a label by bringing a suction plate holding a label into suction into contact with an adherend.
[0002]
[Prior art]
The label sticking device that sticks the label to the adherend by pressing the suction plate holding the label peeled off from the mount onto the adherend via the label prevents the adherend from being damaged by the pressing force. In addition, it is necessary to appropriately control the pressing force of the suction plate against the adherend.
[0003]
As shown in FIG. 3, the conventional label suction device is provided with a detection sensor 4 on the suction plate 5 for confirming that the label 2 has been stuck to the adherend 3, and an ON signal is input to the detection sensor 4. At the same time, the pressing force against the adherend 3 is controlled by retracting the suction plate 5 or holding the suction plates 5 with a plurality of springs 6 and changing the compression force of the springs 6.
[0004]
[Problems to be solved by the invention]
However, the conventional label sticking apparatus 1 must adjust the spring pressure each time the hardness of the sticking surface of the article 3 is changed, but the spring pressure is very difficult to adjust and the working time is also long. Since it often takes several tens of minutes, there is a drawback in that work efficiency is reduced.
[0005]
On the other hand, if the spring 6 is too weak, the suction plate 5 will not be able to suck the label 2 because the suction plate 5 will fluctuate at the upper end where the suction plate 5 sucks the label 2, or the suction position on the suction plate 5. There is a drawback that the label 2 is shifted or stable label 2 adsorption cannot be expected.
Furthermore, since parts such as the spring 6 are necessary, there is a disadvantage that the cost is increased.
[0006]
The present invention has been made in view of such circumstances, and can adhere a label accurately to an adherend having a soft and easily crushed property without damaging it, and can reduce the cost of the apparatus. It aims at providing the label sticking apparatus which can aim at work efficiency improvement.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention advances an adsorbing plate that adsorbs a label with respect to an object to be adhered by an advancing / retreating mechanism, presses the adsorbing plate against the object to be adhered through the label, and In the label adhering apparatus for adhering the label to the kimono, the advance / retreat mechanism includes a motor capable of rotating forward and backward, a power transmission unit, and a slip clutch provided in the power transmission unit, and the power transmission A driving pulley connected to the motor shaft of the motor, a driven pulley disposed at a predetermined interval on the driving pulley, and a timing belt spanned between the driving pulley and the driven pulley; A plurality of guide rollers supported rotatably, arranged in a vertical direction along the timing belt, and arranged in contact with the plurality of guide rollers, and a suction plate at the lower end. Is composed of a lifting by rail plate, provided on the rail plate and the slide while engaging with the guide, the slide plate which is connected to the timing belt via an arm is provided, the suction plate the label the slip clutch and the pressing force for pressing the object to be stuck deposits becomes equal to or greater than a predetermined pressing force, characterized in that so as to slip.
[0008]
According to the present invention, a slip clutch is provided in the power transmission unit of the advance / retreat mechanism that advances and retracts the suction plate to and from the adherend, and when the pressing force with which the suction plate presses the label against the adherend becomes equal to or greater than a predetermined pressing force Since the slip clutch slips, a predetermined pressing force necessary for sticking is applied to the adherend at a position where the advancement of the suction plate to the adherend is stopped. This makes it possible to appropriately control the pressing force when sticking the label to the adherend, so it is possible to stick the label neatly without damaging the adherend that is soft and easily crushed. it can.
[0009]
Further, when the time during which the suction plate presses the label against the adherend becomes time-up, the suction plate can be moved backward with respect to the adherend by the advance / retreat mechanism .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of a label sticking device according to the present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 is a front view showing an overall configuration of a label sticking apparatus according to the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to the member similar to having demonstrated in FIG.
[0011]
As shown in FIG. 1, the label sticking device 10 is roughly divided into a label 2 supply / winding part 12 and a sticking part 14.
The supply / winding unit 12 mainly includes a supply reel 18 that feeds a belt-like strip mount 16 on which labels 2 are temporarily attached at predetermined intervals, and a peeling plate 20 that peels the label 2 from the strip mount 16 one by one. The take-up reel 22 that takes up the belt-like mount 16 from which the label 2 has been peeled off, the take-up motor 24 that drives the take-up reel 22, and the controller 26 that controls the take-up motor 24. Then, the belt-like mount 16 temporarily attached with the label 2 is unwound from the supply reel 18 and conveyed to the peeling plate 20 while engaging with a plurality of supply-side guide rollers 28, 28. The The release plate 20 is formed with an acute angle at the tip, and the belt-like mount 16 to which the label 2 is temporarily attached is turned and conveyed at the tip of the release plate 20. And is fed out in the direction of the sticking part 14. On the other hand, the strip-shaped mount from which the label 2 has been peeled is taken up by the take-up reel 22 through a plurality of take-up side guide rollers 29, 29.
[0012]
The adhering portion 14 is mainly composed of an adsorbing plate 5 and an advancing / retracting mechanism 36 for moving the adsorbing plate 5 back and forth with respect to the adherend 3. And a slip clutch 50 provided in the power transmission unit 34. The power transmission unit 34 includes a drive pulley 38 connected to the motor shaft 32 of the motor 30, a driven pulley 40 that is disposed directly below the drive pulley 38 with a predetermined interval, and a drive pulley 38 and a driven pulley 40. An endless timing belt 42 stretched between, a pair of guides 44 standing vertically along the timing belt 42 and having a U-shaped cross section, and a concave rail that moves up and down as guided by the guides 44 The suction plate 5 is supported by the lower end of the rail plate 48.
[0013]
As shown in FIG. 2, the guide 44, the rail plate 48, the timing belt 42, and the suction plate 5 are supported by a guide 44 so that both ends thereof are rotatable. A plurality of guide rollers 46 are arranged in the vertical direction. Further, a rail plate 48 is disposed in a vertical direction in contact with the guide rollers 46 arranged in the pair of guides 44, and a slide that slides while engaging with the guide 44 on one side of the rail plate 48. A plate 49 is provided. The slide plate 49 is connected to the timing belt 42 via the arm 51. Therefore, when the motor 30 rotates forward and the timing belt 42 rotates clockwise in FIG. 1, the suction plate 5 moves up while being guided by the guide 44. Further, when the motor 30 rotates in the reverse direction and rotates the timing belt 42 counterclockwise in FIG. 1, the suction plate 5 is lowered while being guided by the guide 44.
[0014]
Further, as shown in FIG. 1, a plate-like detection plate 54 protrudes from the upper side edge of the right side plate 48 </ b> A of the concave rail plate 48, and the vicinity and middle of the upper end position of the guide 44. An upper limit sensor 56 and a lower limit sensor 58 are disposed in the vicinity of the position. As a result, the suction plate 5 moves up and down while the detection plate 54 is detected by the upper limit sensor 56 and the lower limit sensor 58, so that the upper limit position A and the lower limit position B of the lowering of the suction plate 5 are determined.
[0015]
The slip clutch 50 is interposed between the drive pulley 38 and the motor shaft 32. As a result, when the suction plate 5 is lowered to the lower limit position, the adherend 3 is contacted and pressed against the adherend 3, and when the pressing force exceeds a predetermined pressing force, that is, the rotation of the motor 30 is predetermined. When the torque exceeds this value, the slip clutch 50 slips and the motor shaft 32 runs idle. The predetermined pressing force (slip torque) at which the slip clutch 50 slips is adjusted in advance by the user, and the degree of rotation of the motor shaft 32 is changed. However, it is preferable to control the load torque within a range of 0.1 to 2.5 kgf / cm. Further, in this case, the slip clutch 50 can change the predetermined pressing force to slip, so that it is possible to take a fine response according to the degree of softness of the adherend 3.
[0016]
Further, the suction plate 5 is provided with a plurality of suction holes 52, and communicates with a vacuum device (not shown), and sucks the label 2 peeled off from the belt-like mount 16 by the suction action of the vacuum device with the adhesive surface down. Hold.
Next, the operation of the label sticking apparatus of the present invention configured as described above will be described.
The strip-shaped strip 16 on which a large number of labels 2 are temporarily attached at a predetermined interval is first fed from the supply reel 18 and guided to the peeling plate 20 via a plurality of supply-side guide rollers 28, 28. . The belt-like mount 16 is turned and conveyed at the tip of the peeling plate 20, and the label 2 having a higher rigidity than the belt-like mount 16 is fed straight to the sticking unit 14. The strip-shaped mount 16 from which the label 2 has been peeled is wound around the take-up reel 22 via a plurality of take-up side guidelers 29, 29. On the other hand, the label 2 peeled off from the belt-like mount 16 is sucked and held on the lower surface of the suction plate 5 which has been raised to the upper limit position A and stopped with the adhesive surface down. Next, the motor 30 is actuated to rotate the timing belt 42 counterclockwise, and the suction plate 5 is conveyed by the conveyor 60 and descends toward the object 3 to be stuck. And the suction plate 5 contacts the sticking surface of the adherend 3 via the label 2, and the torque of the pressing force applied between the suction plate 5 and the adherend 3 becomes a preset slip torque value. When it reaches, it automatically slips on the friction surface of the slip clutch 50. As a result, the lowering of the suction plate 5 toward the lower limit position B stops at the position where the suction plate 5 abuts on the adherend 3 (position indicated by the two-dot chain line in FIG. 1), and the adherend 3 is given a predetermined pressing force required for sticking. Therefore, since the pressing force when sticking the label 2 to the adherend 3 can be appropriately controlled, the label 2 can be neatly attached to the adherend 3 which is soft and easily crushed without being damaged. can do.
[0017]
Next, when the time for which the suction plate 5 presses the label 2 against the adherend 3 after a certain interval is up, the motor 30 operates to rotate the timing belt 42 clockwise, and the suction plate 5 rises and the application of the label 2 ends. When the suction plate 5 rises along the two guides 44 and reaches the upper limit position A, the detection plate 54 is detected by the upper limit sensor 56 and the suction plate 5 stops. The suction plate 5 stopped at the upper limit position A waits for the end of peeling of the next label 2 while sucking air from the vacuum device.
[0018]
By repeating the above sticking operation, the label 2 is stuck on the adherend 3 in sequence.
The advancing / retracting mechanism 36 of the label sticking apparatus 10 of the present invention may use a rack and pinion mechanism instead of the timing belt 42 and the pulley. In this case, the rotation shaft of the pinion is connected to the motor, the slip clutch 50 is attached to the motor shaft 32, and the suction plate 5 is attached to the rack side that meshes with the pinion. Then, the suction plate 5 moves forward and backward with respect to the adherend 3 by raising and lowering the rack by rotating the pinion.
[0019]
【The invention's effect】
As described above, according to the label sticking apparatus of the present invention, a slip clutch is provided in the power transmission part of the advance / retreat mechanism for moving the suction plate back and forth with respect to the adherend, and the pressing when sticking the label to the adherend is performed. Since the pressure can be appropriately controlled, the label can be neatly adhered to an adherend that is soft and easily crushed without being damaged.
[0020]
Moreover, since a detection sensor and a spring are not required unlike the conventional case, the cost of the apparatus can be reduced. Furthermore, troublesome work such as adjustment of spring pressure can be omitted, and work efficiency can be greatly improved.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram illustrating an embodiment of a label applicator according to the present invention. FIG. 2 is a perspective view illustrating details of an advancing and retracting mechanism portion illustrating an embodiment of a label applicator according to the present invention. ] Diagram for explaining an embodiment of a conventional labeling apparatus [Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 ... Label 3 ... To-be-adhered object 5 ... Adsorption board 10 ... Label sticking apparatus 12 ... Supplying / winding part 14 ... Adhering part 16 ... Band-shaped mount 18 ... Supply reel 20 ... Release plate 22 ... Take-up reel 30 ... Motor 32 ... Motor shaft 34 ... Power transmission unit 36 ... Advance / retract mechanism 38 ... Drive pulley 40 ... Driven pulley 42 ... Timing belt 44 ... Guide 48 ... Rail plate 50 ... Slip clutch

Claims (1)

Label sticking that sticks the label to the adherend by advancing the suction plate that has adsorbed the label with respect to the adherend by an advancing / retreating mechanism, pressing the suction plate against the adherend via the label In the device,
The advancing / retreating mechanism includes a motor capable of rotating in the forward and reverse directions, a power transmission unit, and a slip clutch provided in the power transmission unit, and the power transmission unit includes a drive pulley coupled to a motor shaft of the motor; A driven pulley disposed at a predetermined interval on the drive pulley, a timing belt spanned between the drive pulley and the driven pulley, and a plurality of guide rollers supported rotatably are arranged in the vertical direction. And a guide erected along the timing belt, a rail plate arranged in contact with the plurality of guide rollers, and having a suction plate supported at the lower end thereof, provided on the rail plate, A slide plate is provided that slides while engaging with the guide and is connected to a timing belt via an arm.
The label sticking apparatus, wherein the slip clutch slips when the pressing force with which the suction plate presses the label against the adherend becomes a predetermined pressing force or more .

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