JP3866338B2 - Labeling device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a label affixing device, and more particularly to a label affixing device having a tension roller in the middle of a conveyance path for winding from a supply reel to a take-up reel.
[0002]
[Prior art]
This type of label applicator that peels off a label from a belt-like mount (see FIG. 2) on which labels are temporarily attached at fixed pitches and affixes them to an object to be attached such as corrugated cardboard. The attached belt-like mount is pulled by a rubber roller and a nip roller of a transfer section equipped with a stepping motor, and the belt-like mount is wound up by a take-up reel, and a strip-like mount is provided on the peeling reel in the conveyance path of the take-up reel from the supply reel. The label is peeled off from the belt-like mount by feeding and transported to the sticking part.
[0003]
In feeding the label from the peeling plate, in order to stick the label to the correct position of the object to be pasted, it is necessary to appropriately control the tension applied to the belt-like mount on the conveyance path.
For this reason, in the conventional label sticking apparatus, a spring-type tension roller having a spring mechanism that swings about a swing shaft and is biased in a direction to contact the belt-like mount is provided on the transport path immediately after the supply reel. And swinging in accordance with a change in tension applied to the belt-like mount so as to absorb the change in tension.
[0004]
[Problems to be solved by the invention]
However, in the case of a spring-type tension roller as in the conventional label sticking device, there is a limitation in the range of change in tension that can be absorbed, and there are the following disadvantages.
(1) If the winding speed of the take-up reel (label sticking speed) is fast, or if the label pitch between the labels temporarily attached to the belt-like mount is long and the amount of feeding of the label is large, use the take-up reel. A large torque load is applied to the rotating stepping motor. Also, a large torque load is applied to the stepping motor that rotates the take-up reel even when the label width is large and the remaining amount of the strip mount remaining on the supply reel is large. In this way, if a too large torque load is applied to the stepping motor, the belt-like mount cannot be smoothly wound on the take-up reel, so the amount and position of the label that is peeled off from the peeled portion and fed to the sticking portion. Fluctuates. However, the spring-type tension roller cannot absorb the change in tension that occurs in the belt-like mount due to the magnitude of the torque load of the stepping motor that rotates the take-up reel, so the torque load of the stepping motor cannot be reduced sufficiently. There is.
[0005]
(2) Even when the winding speed of the take-up reel is constant, the supply reel rotates when the belt-like mount is taken up by the take-up reel because the inertial force varies depending on the diameter wound around the supply reel. However, even if the belt-like mount is loosened in the transport path, there is a disadvantage that the spring-type tension roller cannot completely eliminate the slack.
As a result, in the conventional label sticking device, the amount of the label fed from the peeling plate to the sticking part becomes inaccurate, and the label is not stuck at the correct sticking position of the object to be pasted, or the peeling plate is insufficiently peeled off. As it was affixed to the adherend as it was, the affixing accuracy was poor.
[0006]
The present invention has been made in view of such circumstances, and the tension roller changes the tension even when the label application speed, the label pitch on the strip mount, or the remaining amount of the strip mount wound on the supply reel is different. Therefore, it is an object of the present invention to provide a label sticking device capable of correctly feeding the label from the peeling part to the sticking part.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention unwinds a belt-like mount on which a label is temporarily attached from a supply reel, turns the belt-like mount with a peeling plate provided in the middle of a conveyance path, and peels the label from the belt-like mount. In the label sticking apparatus in which a tension roller that is movable in a direction to absorb a change in tension applied to the belt-like mount and is peeled off with the release plate A feeding unit that pulls the belt-shaped mount , a take-up reel that winds the strip-shaped mount after the label is peeled off, and a stepping motor that drives the transport unit , and the supply reel feeds the belt-shaped mount A driving device for rotationally driving in the direction, a detecting means for detecting the amount of movement of the tension roller, and controlling the driving device based on a detection result of the detecting means to And control means for varying the rotational speed of the reel, the amount of movement of the tension roller, wherein the rotational speed of the supply reel and variable, leading the backing strip after the label peeling with a suitable torque load on the stepping motor The take-up reel is used for winding.
[0008]
According to the present invention, the supply reel is provided with a driving device, the amount of movement of the tension roller is detected, and the control means controls the driving device based on the amount of movement to feed the belt-like mount of the supply reel. Change the rotation speed. That is, when the tension roller moves in a direction that increases the torque load for winding the belt-like mount, the rotation speed of the supply reel is increased so that the torque load does not become too large. Conversely, when the tension roller moves in a direction that reduces the torque load for winding the belt-like mount, in other words, in a direction in which the belt-like backing in the conveyance path is slackened, the rotation speed of the supply reel is reduced to reduce the belt load. Make sure that the mount does not sag in the transport path. As a result, the tension roller can apply an appropriate tension to the belt-like mount, so that the torque load for winding the belt-like mount is appropriate, and the feeding accuracy of the label peeled off from the peeling portion and fed to the sticking portion is improved. Get better.
[0009]
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 schematic configuration diagram showing the overall configuration of a label sticking device according to the present invention.
As shown in FIG. 1, the label sticking device 20 mainly includes a supply reel 2 that feeds a roll-shaped strip mount 6 on which a large number of labels 7 are temporarily attached at a predetermined pitch, and the vicinity of the supply reel 2. A tension roller 3 for applying tension to the belt-like backing sheet 6, a peeling plate 9 for peeling the label 7 from the belt-like backing paper 6 one by one, and a belt-like backing paper 6 from which the label 7 has been peeled off by the peeling plate 9. The take-up reel 24, the transfer unit 11 that pulls the belt-like mount 6, and the sticking unit 8 that sticks the label 7 peeled off by the peeling plate 9 to the article 10 are configured.
[0010]
The transfer unit 11 includes a rubber roller 21 and a nip roller 23 that sandwich and convey the belt-like mount 6, and the rubber roller 21 is connected to the stepping motor 5 via a first timing belt 25 and via a second timing belt 29. To the take-up reel 24. Thus, the belt-like mount 6 from which the label 7 has been peeled off by the peeling plate 9 is conveyed while being sandwiched between the rubber roller 21 connected to the stepping motor 5 via the nip roller 23 and the timing belt 25, and the rubber roller 21 and the timing belt 29 are moved. The take-up reel 24 is connected to the take-up reel 24. The rubber roller 21 intermittently pulls the belt-like mount 6 to feed the belt-like mount 6 from the supply reel 2 to the conveyance path, and feeds the label 7 peeled off from the belt-like mount 6 by the peeling plate 9 to the sticking portion 8.
[0011]
The tension roller 3 is swingably supported on the tension shaft 4 via an arm 26, and the tension roller 3 is supported on the tension shaft 4 in a direction opposite to the direction of the peeling plate 9 (direction A in the figure). A spring (not shown) for urging to the (C position) is incorporated. As a result, the tension roller 3 swings in the A direction from the C position in accordance with the change in tension applied to the belt-like mount 6 to absorb the change in the tension roller 3 applied to the belt-like mount 6.
[0012]
The release plate 9 is formed in an acute angle with the front end inclined obliquely downward, and the label 7 having a larger rigidity than the belt mount 6 is obtained by turning and conveying the belt-like mount 6 temporarily attached with the label 7 at the tip of the release plate 9. It is peeled off from the strip-shaped mount 6 and is fed straight out in the direction of the sticking part 8.
The affixing part 8 is composed of a pressing roller 38 and an advancing / retreating mechanism (not shown) for moving the pressing roller 38 up and down. When the label 7 is peeled off from the belt-like mount 6 by the peeling plate 9 and fed to the affixing part 8, The roller 38 descends and the label 7 is stuck to the adherend 10 by pressing the label 7 with the pressing roller 38 on the upper surface of the adherend 10 conveyed by the separate conveyor 42.
[0013]
The above is the same as before, and the improved part of the present invention will be described below. The supply reel 2 is connected to a drive motor 22 via a timing belt 27, and the drive motor 22 rotates the supply reel 2 in a direction in which the belt-like mount 6 is fed to the conveyance path. On the other hand, the tension shaft 4 of the tension roller 3 is connected to the potentiometer 28, the rotation angle potentiometer 28 around the tension shaft 4 of the tension roller 3, i.e., it detects the amount of movement of the tension roller 3, the detection signal The output signal amplified by the amplifier circuit is output to the speed control box 30. It should be noted that a variable volume can be used instead of the potentiometer 28.
[0014]
Speed control box 30 is connected to a drive motor 22, the output signal outputted from the potentiometer 28, i.e. to vary the rotational speed of the supply reel 2 for feeding backing strip 6 in accordance with the moving amount of the tension roller 3. That is, the speed control box 30, in order to return the amount of movement of the tension roller 3 that varies with the magnitude of the torque load of the stepping motor 5 for rotating the take-up reel 24, the tension roller 3 swings in the direction of the position C A relationship with a necessary rotation speed of the supply reel 2 is input in advance.
[0015]
Next, the operation of the label sticking device of the present invention configured as described above will be described.
The strip-shaped strip mount 6 on which a large number of labels 7 are temporarily attached is fed to the transport path from the supply reel 2 by the intermittent rotation of the rubber roller 21, engages with the guide roller 32 and the tension roller 3, and is transported to the peeling plate 9. Is done. Next, the belt-like mount 6 is turned and conveyed at the tip of the peeling plate 9, whereby the label 7 peeled off from the belt-like mount 6 is fed out to the sticking portion 8. The label 7 fed out to the pasting unit 8 is pressed and pasted by the pressing roller 38 onto the article 10 to be pasted such as cardboard which has been conveyed by a separate conveyor 42. On the other hand, the strip-shaped mount 6 from which the label 7 has been peeled is wound around a take-up reel 24 via a rubber roller 21 and a nip roller 23.
[0016]
In this label affixing, a label affixing device provided with a tension roller 3 that absorbs a tension change with only a spring is a label 7 affixing speed, a label pitch on a strip mount 6, or a roll wound around a supply reel 2. When the remaining amount of the strip-shaped mount 6 is different, the tension roller 3 cannot absorb the tension change applied to the strip-shaped mount 6. As a result, if the torque load applied to the stepping motor 5 that rotates the rubber roller 21 is too large, the feeding accuracy such as the feeding amount and feeding position of the label 7 fed from the peeling plate 9 is deteriorated, and the label 7 sticking accuracy is lowered. In addition, when the torque load of the stepping motor 5 is too small, there is a problem that the belt-like mount 6 is loosened in the conveyance path and the belt-like mount 6 is dropped from the conveyance path.
[0017]
Therefore, in the present invention, the supply reel 2 so as to be rotated rather than rotated, and detects the amount of movement of the tension roller 3 by the potentiometer 28, speed control box 30 according to the detection result of the potentiometer 28 Thus, the rotational speed of the supply reel 2 is varied by controlling the rotational speed of the drive motor 22.
[0018]
That is, when the tension roller 3 moves greatly and quickly in the direction A, the feeding speed of the label 7 may be high, or the label pitch may be long, and the torque load of the stepping motor 5 becomes too large, so that the feeding accuracy of the label 7 is increased. Decreases. In this case, the rotational speed of the supply reel 2 is increased to reduce the tension applied to the belt-like mount 6 (the direction in which the belt-like mount 6 is slack), and the tension roller 3 is returned to the C position.
[0019]
Further, when the tension roller 3 moves small in the direction A, it is considered that the label 7 feeding speed is slow or the label 7 pitch is short. In this case, the rotation speed of the supply reel is slightly increased and the tension roller is returned to the C position.
Thereby, the stepping motor 5 can wind up the belt-like mount 6 on the take-up reel 24 with an appropriate torque load. Accordingly, since the feeding accuracy of the label 7 fed from the peeling plate 9 is improved, the sticking accuracy of the label 7 can be improved.
[0020]
【The invention's effect】
As described above, according to the label sticking apparatus of the present invention, the supply reel so as to drive rotation rather than rotated, and detects the amount of movement of the tension roller by the detection unit, the detection result of said detecting means The rotation speed of the supply reel is varied by controlling the drive device based on the above, so that the label sticking speed, the label pitch on the strip mount, or the remaining amount of the strip mount wound on the supply reel is different. In addition, since the tension roller reliably absorbs the tension change, the label can be properly fed from the peeling portion to the sticking portion.
[0021]
Therefore, since the label can be accurately peeled off at the peeling portion and fed to the sticking portion, the sticking accuracy of the label to the sticking object can be improved.
In addition, when the supply reel is driven to rotate, the inertial force does not act, and the slack of the belt-like mount due to the excessive rotation of the supply reel is completely eliminated.
Furthermore, troublesome work such as adjustment of the feeding speed of the label as in the prior art can be omitted, and the work efficiency can be greatly increased.
[Brief description of the drawings]
FIG. 1 is an overall schematic configuration diagram illustrating an embodiment of a label sticking apparatus according to the present invention. FIG. 2 is an explanatory diagram illustrating details of a belt-like mount temporarily attached with a label.
DESCRIPTION OF SYMBOLS 2 ... Supply reel 3 ... Tension roller 4 ... Tension shaft 5 ... Stepping motor 6 ... Band-shaped mount 7 ... Label 8 ... Pasting part 9 ... Peeling plate 10 ... To-be-attached object 11 ... Transfer part 20 ... Label sticking apparatus 22 ... Drive motor 24 ... take-up reel 28 ... potentiometer 30 ... speed control box 38 ... pressing roller

Claims (1)

The belt-like mount on which the label is temporarily attached is fed out from a supply reel, and the belt-like mount is turned and conveyed by a peeling plate provided in the middle of the conveyance path, and the label is peeled off from the belt-like mount and fed to the affixing portion. In the label sticking device provided with a tension roller movable in the direction of absorbing the change in tension applied to the transport path,
A transfer unit for pulling the belt-like mount after peeling the label with the peeling plate ;
A take-up reel that winds up the belt-like mount after peeling off the label ;
A stepping motor for driving the transfer unit ,
A driving device for rotating the supply reel in the feeding direction of the belt-like mount;
Detecting means for detecting the amount of movement of the tension roller;
Control means for controlling the drive device based on the detection result of the detection means to vary the rotation speed of the supply reel;
The amount of movement of the tension roller that, by varying the rotational speed of the supply reel and the leading the backing strip after the label peeling with a suitable torque load to the stepping motor so as to wind in the winding reel A labeling device characterized by.

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