JP4618849B2 - Label adsorption device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a label adhering and affixing device, and more particularly to a label adhering and affixing device that temporarily holds a label piece peeled off from a mount and affixes it to an object to be adhered.
[0002]
[Prior art]
The label adhering and sticking device is a device that peels a label piece from a belt-shaped mount, temporarily holds the label piece, and sticks it to an object to be pasted. As shown in FIG. 8, the label adhering and sticking apparatus has a release plate 1, and the label piece 3 is released from the mount 2 by turning the mount 2 with the release plate 1. The peeled label piece 3 is fed out horizontally and is located below the suction disk 5. A number of holes 6, 6... Communicating with the hollow chamber 4 are formed in the suction plate 5, and the label piece 3 is sucked and held on the suction plate 5 by making the hollow chamber 4 have a negative pressure. The label piece 3 adsorbed on the adsorption board 5 is lowered by lowering the adsorption board 5 to bring the label piece 3 into contact with the object 7 or by injecting air from the holes 6, 6. The piece 3 is affixed to the article 7 by skipping.
[0003]
[Problems to be solved by the invention]
However, since the conventional label adhering and pasting apparatus has a structure in which a gap of 1 mm or more is formed between the peeling plate 1 and the adsorbing board 5, the rear end 3A of the label piece 3 supported on the adsorbing board 5 There is a drawback that the adsorption force that sticks out to the peeling plate 1 and adsorbs the label piece 3 is reduced. For this reason, the label piece 3 is slanted or the label piece 3 falls from the suction disk 5, and the label piece 3 cannot be attached to a predetermined position of the article 7 with high accuracy. Further, when the label piece 3 is stuck to the object 7 to be stuck, the force for pressing the rear end portion 3A with the suction plate 5 becomes weak, and the rear end portion 3A cannot be pressure-bonded.
[0004]
Therefore, as shown in FIG. 9A, the position of the label piece 3 is adjusted by pressing the rear end portion 3 </ b> A of the label piece 3 protruding from the suction plate 5 toward the suction plate 5 by the guide member 8. Can be considered. However, if the adsorption force for adsorbing the label piece 3 to the adsorption plate 5 is too strong, the label piece 3 is bent when the guide member 8 presses the label piece 3 as shown in FIG. 9B. On the other hand, if the attracting force for attracting the label piece 3 is too weak, the position-adjusted label 3 is displaced from that position, and there is a problem that it cannot be applied to a predetermined position with high accuracy.
[0005]
The present invention has been made in view of such circumstances, and an object thereof is to provide a label adhering and sticking apparatus capable of adjusting the position of a label piece protruding from an adsorbing board.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a peeling means for peeling a label piece temporarily attached to a mount from the mount, a suction board for holding the label piece peeled by the peeling means, and a suction means A position adjusting means for adjusting the position of the held label piece; and an adsorption force adjusting means for adjusting the suction force of the suction disk for sucking and holding the label piece in a multi-step manner , wherein the label piece is sucked and held. After positioning the rear end of the label piece attracted to the suction plate by the slide cylinder for sliding the suction plate to the intermediate position and the position adjusting means at the intermediate position, the suction plate is moved to move the label piece And a suction plate moving means for attaching the object to the object to be attached.
[0007]
According to the present invention, the adsorption force of the adsorption plate that adsorbs the label piece is adjusted in multiple steps, and the label piece slides on the adsorption plate when adjusting the position of the label piece. It is positioned at a predetermined position without bending. Further, since the suction force of the suction disk is increased after the position adjustment, the label piece can be sucked and held in a positioned state.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a label adhering and sticking device according to the present invention will be described in detail with reference to the accompanying drawings.
[0009]
FIG. 1 is a schematic structural diagram showing the overall structure of the label adhering and sticking apparatus 10. As shown in the figure, the label suction sticking device 10 mainly includes a supply shaft 12, a printing unit 14, a peeling plate 16, a suction plate 18, a slide cylinder 20, a sticking cylinder 22, a positioning cylinder (corresponding to a position adjusting means) 24, The compressor 26, the switching unit 28, and the control device 30 are included.
[0010]
A continuous label 32 is wound around the supply shaft 12 in a roll shape. As shown in FIG. 2, the label continuum 32 is configured by temporarily attaching a plurality of label pieces 36, 36,. The label continuum 32 is fed out from the supply shaft 12 and supplied to the printing unit 14 by rotationally driving the platen roller 38 of the printing unit 14 shown in FIG.
[0011]
The printing unit 14 includes a thermal head 40 and a platen roller 38 that are arranged to face each other, and prints barcodes, character information, and the like on each of the label pieces 36, 36... Based on print data output from the control device 30. . The printed label piece 36 is sent to the peeling plate 16 together with the mount 34.
[0012]
As shown in FIG. 2, the peeling plate 16 has a tip portion (end portion on the suction plate 18 side) 16A formed at an acute angle (for example, 15 °), and the tip portion 16A is inclined obliquely downward. The label continuous body 32 is hung on the tip end portion 16A, and the mount 34 is wound around the winding shaft 42 in FIG. Accordingly, since the mount 34 is turned by the release plate 16, the label piece 36 is peeled from the mount 34 due to its rigidity. The peeled label piece 36 is drawn out below the suction plate 18 and is sucked and held by the suction plate 18. The feeding direction of the label piece 36 is set according to the rigidity of the label piece 36, and is set to 20 to 25 ° with respect to the horizontal direction, for example.
[0013]
As shown in FIG. 2, the suction plate 18 is attached to the lower surface of a hollow chamber member 44 having a hollow chamber 44A therein, and a plurality of holes 18A, 18A,... Communicating with the hollow chamber 44A are formed. Therefore, the label piece 36 is adsorbed and held by the suction plate 18 by making the hollow chamber 44A have a negative pressure, and the label piece 36 is attached to the object 48 by releasing the negative pressure of the hollow chamber 44A. Is possible. In addition, the code | symbol 46 of FIG. 1 is a crimp switch, and detects that the label piece 36 was crimped | bonded to the to-be-adhered object 48.
[0014]
The suction disk 18 moves by driving the slide cylinder 20 or the sticking cylinder 22. That is, the suction plate 18 is connected to the rod 22A of the sticking cylinder 22 via the hollow chamber member 44 and the connecting plate 52, and the sticking cylinder 22 is connected to the rod 20A of the slide cylinder 20 via the slide base 50. The sticking cylinder 22 is attached to extend and contract the rod 22A in the vertical direction, and the slide cylinder 20 is attached to extend and contract the rod 20A in the feeding direction of the label piece 36. Thus, when the slide cylinder 20 is driven, the suction plate 18 moves in the feeding direction of the label piece 36, and when the sticking cylinder 22 is driven, the suction plate 18 moves in the vertical direction. The suction plate 18 holding the label piece 36 is first moved to an intermediate position indicated by a two-dot chain line in FIGS. 1 and 2 by driving the slide cylinder 20, and then the sticking cylinder 22 is driven. To move downward.
[0015]
The positioning cylinder 24 is provided below the peeling plate 16 and extends and contracts the rod 24A in the horizontal direction. When the positioning cylinder 24 is driven, as shown in FIG. 2, the guide plate 54 attached to the tip of the rod 24A comes into contact with the end face of the suction plate 18 at the intermediate position.
[0016]
The compressor 26 in FIG. 1 constantly supplies compressed air having a predetermined pressure to the air tubes 55 and 56. The air tube 55 communicates with the hollow chamber 44 </ b> A of the hollow chamber member 44, and a pressure on / off valve (air operated valve) 58 is disposed. The pressure on-off valve 58 is opened by supplying compressed air from the air tube 57, and communicates the compressor 26 and the hollow chamber 44A. Thereby, compressed air is supplied from the compressor 26 to the hollow chamber 44A. The supply / stop of compressed air to the air tube 57 is switched by the switching unit 28.
[0017]
On the other hand, the air tube 56 communicates with the switching unit 28 and supplies compressed air from the compressor 26 to the switching unit 28. The switching unit 28 has seven solenoid valves 28A to 28G. By opening and closing the solenoid valves 28A to 28G, the pressure on / off valve 58, the manifold 62, the slide cylinder 20, the sticking cylinder 22, or the positioning cylinder 24 is opened. Switch the supply / stop of compressed air.
[0018]
For example, the electromagnetic valve 28A is connected to the pressure on / off valve 58 via the air tube 57, and supplies compressed air to the pressure on / off valve 58 by opening the electromagnetic valve 28A. As a result, the pressure open / close valve 58 is opened, and the compressed air is supplied to the hollow chamber member 44.
[0019]
The electromagnetic valve 28B and the electromagnetic valve 28C are connected to the manifold 62 via air tubes 59 and 60, respectively. As shown in FIG. 3, the manifold 62 has three openings 62A, 62B, 62C, the air tubes 59, 60 are connected to the openings 62A, 62B, and the supply port 64A of the ejector 64 is connected to the remaining openings 62C. Connected. When the ejector 64 supplies compressed air from the supply port 64A, the ejector 64 injects the compressed air to the outside through a throttle (not shown), and sucks air from the vacuum port 64B communicated with the throttle. A suction tube 66 is connected to the vacuum port 64B, and the suction tube 66 communicates with the hollow chamber member 44 as shown in FIG. Accordingly, when the electromagnetic valve 28B or 28C is opened, compressed air is supplied to the ejector 64 through the air tube 59 or 60, so that air is sucked into the ejector 64 from the hollow chamber 44A, and the label piece 36 is drawn by the suction force. Is sucked and held by the suction disk 18.
[0020]
The air tube 59 is provided with a flow rate adjusting means 72, and the flow rate adjusting means 72 adjusts the flow rate of the compressed air supplied to the ejector 64. As a result, the flow rate of air sucked from the hollow chamber 44 </ b> A to the ejector 64 is adjusted, so that the suction force for sucking the label piece 36 to the suction plate 18 can be adjusted. The adsorption force when the electromagnetic valve 28C is closed and the electromagnetic valve 28B is opened is an adsorption force such that the label piece 36 adsorbed on the adsorption plate 18 slides on the adsorption plate 18 (hereinafter referred to as weak adsorption force). Set to. On the other hand, the suction force when the solenoid valve 28B is closed and the solenoid valve 28C is opened is set to a suction force (hereinafter referred to as a strong suction force) so that the label piece 36 sucked on the suction plate 18 is fixed.
[0021]
The solenoid valves 28D, 28E, and 28F are connected to the slide cylinder 20, the pasting cylinder 22, and the positioning cylinder 24, respectively. By opening and closing the solenoid valves 28D, 28E, and 28F, the slide cylinder 20, the pasting cylinder 22, and the positioning cylinder 24 are connected. Compressed air is supplied to expand and contract each rod 20A, 22A, 24A.
[0022]
The electromagnetic valve (auxiliary blowing electromagnetic valve) 28G is connected to the auxiliary blowing nozzle 68 of FIG. 2, and blows out compressed air toward the adsorption board 18 by opening the electromagnetic valve 28G.
[0023]
The control device 30 is connected to the switching unit 28 and controls opening and closing of the electromagnetic valves 28A to 28G of the switching unit 28. The control device 30 is connected to the platen roller 38 and the take-up shaft 42 of the printing unit 14, and controls the rotation of the platen roller 38 and the take-up shaft 42 to control the feed speed of the label continuum 32. . In addition, the code | symbol 67 of FIG. 1 is a sensor which detects the residual amount of the label continuous body 32 wound around the supply shaft 12. FIG.
[0024]
Next, the operation of the label adhering and sticking apparatus 10 configured as described above will be described according to the flowchart shown in FIG. 4 and the timing chart shown in FIG.
[0025]
First, initial settings such as the feed speed of the continuous label 32 and the input of print contents are performed (step S1). Next, the platen roller 38 and the take-up shaft 42 are rotated to start feeding the label continuous body 32 (step S2). As a result, printing is performed on the label piece 36 of the label continuum 32, and the printed label piece 36 is peeled off from the mount 34 by the peeling plate 16 and fed out obliquely downward.
[0026]
Next, the electromagnetic valve 28B (corresponding to the adsorption 1 electromagnetic valve in FIGS. 4 and 5) is opened, and compressed air is supplied to the ejector 64 (step S3). Thereby, the hollow chamber 44 </ b> A has a negative pressure, and the label piece 36 fed out from the peeling plate 16 is adsorbed to the adsorbing plate 18 with a weak adsorbing force. At this time, by opening the electromagnetic valve 28G (corresponding to the auxiliary blowing electromagnetic valve in FIGS. 4 and 5) and injecting the compressed air from the auxiliary blowing nozzle 68, the label piece 36 is reliably sucked and held on the suction plate 18. (Step S4).
[0027]
After the printing and feeding of one label piece 36 is completed (step S5), the rotation of the platen roller 38 and the take-up shaft 42 is stopped (step S6), the electromagnetic valve 28G is closed, and the compression from the auxiliary blowing nozzle 68 is performed. Air injection is stopped (step S7).
[0028]
Next, the slide cylinder 20 is driven, and the suction plate 18 holding the label piece 36 is slid in the feeding direction of the label piece 36 (step S8). When the suction plate 18 moves to the intermediate position and a front end switch (not shown) of the slide cylinder 20 is turned on (step S9), the positioning cylinder 24 is driven (step S10). As a result, the guide plate 54 attached to the tip of the rod 24A comes into contact with the end face of the suction plate 18, and the position of the label piece 36 is adjusted. The position adjustment of the label piece 36 will be described in detail later.
[0029]
After the position adjustment of the label piece 36 is completed (step S11), the ready signal is turned ON, the electromagnetic valve 28B is closed (step S12), and the electromagnetic valve 28C (corresponding to the adsorption 2 electromagnetic valve in FIGS. 4 and 5) Is opened (step S13). Thereby, the label piece 36 is adsorbed by the adsorbing board 18 with a strong adsorbing force and waits in this state.
[0030]
When the adherend 48 is conveyed below the suction plate 18 by the belt conveyor 70 (see FIG. 1), a sensor (not shown) provided on the belt conveyor 70 outputs an activation signal to the control device 30. The control device 30 receives this activation signal (step S14), starts driving the sticking cylinder 22, and lowers the suction plate 18 (step S15).
[0031]
When the suction board 18 is lowered and comes into contact with the object 48, the crimping switch 46 is turned on (step S16). In response to this, the control device 30 closes the electromagnetic valve 28C, stops the suction of air from the hollow chamber 44A, and releases the suction state of the label piece 36 (step S17). Thereby, the label piece 36 is pressure-bonded to the adherend 48. Even if the solenoid valve 28A is opened to supply compressed air to the hollow chamber 44A and the compressed air is jetted from the holes 18A and 18A of the suction plate 18, the label piece 36 can be skipped and pasted to the object 48. Good.
[0032]
Next, the rod 22A of the sticking cylinder 22 is contracted until the origin switch (not shown) of the sticking cylinder 22 is turned on (steps S18 and 19), and further, until the origin switch (not shown) of the slide cylinder 20 is turned on. The rod 20A of the slide cylinder 20 is contracted (steps S20 and S21), and the suction plate 18 is returned to the initial position. Thereby, all the sticking operations of the label pieces 36 are finished (step S22). The above operation is repeated when a new label piece 36 is pasted.
[0033]
Next, the operation of the label adhering and sticking apparatus 10 configured as described above will be described.
[0034]
Since there is a gap between the front end of the peeling plate 16 and the suction plate 18, the label piece 36 has the rear end portion 36 </ b> A protruding from the suction plate 18 as shown in FIG. 6A. Is adsorbed and retained. For this reason, as shown in FIG. 7A, since the area where the label piece 36 and the suction disk 18 overlap is small and the suction power that the suction disk 18 sucks the label piece 36 is small, the label piece 36 is shown by a two-dot chain line. As shown in FIG.
[0035]
Therefore, in the present embodiment, after the suction plate 18 is moved to the intermediate position, the guide plate 54 attached to the positioning cylinder 24 is moved to the suction plate 18 side as shown in FIG. It is made to contact with the end face of. At this time, since the label piece 36 is attracted to the suction disk 18 by the weak suction force, it can slide on the suction disk 18. Therefore, when the label piece 36 is pressed by the guide plate 54, the label piece 36 slides without being bent, and is positioned so that the rear end portion 36A coincides with the end face 18B of the suction disk 18 as shown in FIG. Is done. Thereby, the suction disk 18 comes to suck and hold the label piece 36 over the entire surface, and the suction force increases.
[0036]
Next, the rod 24A of the positioning cylinder 24 is retracted, and when the origin switch is turned ON, the electromagnetic valve 28B is closed and the electromagnetic valve 28C is opened. As a result, the suction force of the suction plate 18 that sucks the label pieces 36 is switched from weak suction force to strong suction force. Therefore, since the label piece 36 does not deviate from the positioned state, the label piece 36 can be accurately attached to a predetermined position of the adherend 48.
[0037]
As described above, the label adhering and sticking apparatus 10 according to the present embodiment adjusts the adsorbing force for adsorbing the label piece 36 in two stages, and weakly adsorbs and positions the label piece 36 when the label piece 36 is positioned. Since it is strong adsorption until it is attached to 48, the label piece 36 can be positioned without being bent, and the label piece 36 can be attached while being positioned.
[0038]
In addition, although embodiment mentioned above demonstrated in the example of the label suction sticking apparatus 10 which has the printing part 14, this invention is applicable also to the label suction sticking apparatus without the printing part 14. FIG.
[0039]
In the above-described embodiment, the strong adsorption is achieved by closing the electromagnetic valve 28B and opening the electromagnetic valve 28C. However, both the electromagnetic valves 28B and 28C may be opened for strong adsorption.
[0040]
Moreover, although embodiment mentioned above switched the weak adsorption and the strong adsorption | suction by opening and closing the electromagnetic valve 28B and the electromagnetic valve 28C, an adsorption | suction force adjustment means is not limited to this. For example, the suction force acting on the label piece 36 may be adjusted by adjusting the flow rate of the compressed air supplied to the ejector 64 by the flow rate adjusting means 72 provided in the air tube 59.
[0041]
Moreover, although embodiment mentioned above adjusted adsorption power in two steps, you may adjust in three or more multistages, and also the timing which adjusts adsorption power is limited to the embodiment mentioned above. It is not a thing. For example, the label piece 36 fed out from the peeling plate 16 may be first sucked with a strong suction force, switched to a weak suction force when positioning, and switched to strong suction again after positioning.
[0042]
【The invention's effect】
As explained above, according to the label adhering and pasting apparatus according to the present invention, the adsorbing force of the adsorbing plate that adsorbs the label piece is adjusted in multiple steps, and the label piece is attached to the adsorbing plate when adjusting the position of the label piece. Since it was made to slide, the position of the label piece is adjusted without bending.
[Brief description of the drawings]
FIG. 1 is a schematic structural view showing an embodiment of a label suction and sticking apparatus according to the present invention. FIG. 2 is a side view showing a suction plate, a peeling plate, and a positioning cylinder. 4] Flow chart showing the operation of the label adhering and sticking apparatus [FIG. 5] Timing chart showing the operation of the label adhering and sticking apparatus [FIG. 6] Side view for explaining the operation of the label adhering and sticking apparatus [FIG. 7] Bottom view corresponding to FIG. FIG. 8 is a side view showing the structure of a conventional device. FIG. 9 is an explanatory diagram showing defects of the conventional device.
DESCRIPTION OF SYMBOLS 10 ... Label adsorption | suction sticking apparatus, 12 ... Supply axis, 14 ... Printing part, 16 ... Release plate, 18 ... Adsorption board, 20 ... Slide cylinder, 22 ... Pasting cylinder, 24 ... Positioning cylinder, 26 ... Compressor, 28 ... Switching unit 28A to 28G ... Solenoid valve, 30 ... Control device, 32 ... Label continuous body, 34 ... Mount, 36 ... Label piece, 44 ... Hollow chamber member, 64 ... Ejector

Claims (2)

Peeling means for peeling the label piece temporarily attached to the mount from the mount;
A suction disk for sucking and holding the label pieces peeled by the peeling means;
Position adjusting means for adjusting the position of the label piece sucked and held by the suction disk;
Adsorption force adjusting means for adjusting the adsorption force of the adsorption plate that adsorbs and holds the label piece in a multi-step manner;
With
A slide cylinder that slides the suction plate holding the label piece to an intermediate position;
A suction plate moving means for moving the suction plate after the rear end of the label piece sucked by the suction plate is positioned by the position adjusting means at the intermediate position, and for sticking the label piece to an object to be pasted; And a label adhering and pasting device.   When the position adjusting means adjusts the position of the label piece, the adsorbing force adjusting means adjusts the adsorbing force so that the label piece can slide the adsorbing plate, and the position adjusting means adjusts the label piece. The label adhering and sticking apparatus according to claim 1, wherein the adsorbing force is increased after adjusting the position of the label.

Images