JPH11189227A - Labelling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a labelling apparatus that prevents cut labels from shrinking on a vacuum drum or sticking, being scorched, thereto even in the case where operation of the label attaching apparatus is stopped because of some reasons including slippage out of a right position in supply of a label belt, slippage out of right positions in attachment of labels, etc. SOLUTION: A labelling apparatus 1 that cuts a label belt 10 formed continuously in a beltlike shape and attaches the cut label onto a cylindrical container that is rotated is equipped with a control device that stops operation of an auto-splicer 14 when a label slippage detecting sensor 21 detects slippage of the label belt 10 and also stops operations of a vacuum drum 30 and a labeller main body 54 when the labels are not held at the vacuum drum 30 and the labeller main body 54.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a label sticking apparatus,
More specifically, the present invention relates to a label sticking apparatus capable of suppressing the loss of label raw materials and restarting the apparatus without complicated work even when the label sticking apparatus is stopped.

[0002]

2. Description of the Related Art Conventionally, a shrink label is known as a technique for attaching a plastic label to a plastic container. This is because when a shrink label is to be attached to a plastic container continuously after the filling process in a filling factory, a step of covering the label material before shrinkage on the plastic container or a step of uniformly heating the whole is required. Since the process and the like are performed intermittently, the operation rate decreases. In addition, there is a possibility that a displacement occurs when the label material is covered, and the label is not accurately displayed at an appropriate place of the plastic container. In addition, when the shrink label is attached to the plastic container in a plastic container manufacturing plant, a heat-resistant plastic container must be used, which increases the material cost of the plastic container.

In order to solve such a problem, the present inventor cuts a label band formed continuously in a band shape, rotates a cylindrical plastic container, and applies a cut label to the label container. The device is proposed in Japanese Patent Application No. 9-69983. This device is a label sticking device that sticks a plastic label to a rounded prismatic plastic container by rotating the container, and applies a hot-melt adhesive to the front end and the rear end. The front end was affixed to the rounded corner of the plastic container, the plastic label was wound around the plastic container while rotating the plastic container, and then the plastic container was rotated to stop the rear end of the plastic label. It is characterized in that it is attached to the front end of a plastic label while being adsorbed by a fixed adsorption device.

[0004]

The label sticking apparatus proposed in Japanese Patent Application No. 9-69983 mentioned above is provided with two label bands coated with a thermal adhesive on the back side in parallel and alternately from these. An auto splicer that continuously supplies a label band, a label shift detection sensor for detecting that the label band is supplied so as to be cut at a predetermined position by a cutter, and cuts the label band for each label. A cutter, a vacuum drum for adsorbing the label cut by the cutter and heating the thermal adhesive,
The labeler has a labeler body for sticking the label in which the thermal adhesive has been adhered to the container. In this label pasting device, after the auto splicer switches the label band,
When the label displacement detection sensor detects that the label application is defective, the label inspection device immediately stops the operation of the entire label application device, adjusts the supply position of the auto splicer, and then resumes the operation. ing.

When the operation of the label attaching apparatus is stopped, if the vacuum drum is adsorbing the label cut by the cutter, the hot air blower for heating the hot adhesive and the label adsorbed by the residual heat around the hot air blower are used. Are continuously heated, and the label shrinks on the vacuum drum or sticks in a scorched state.
If the label is stuck to the vacuum drum in such a state, the label must be peeled off from the vacuum drum before the operation is resumed, which significantly reduces the operation efficiency. In addition, label materials are lost.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems relating to the conventional label sticking apparatus, and has a problem in that the label sticking apparatus is stopped due to a positional shift of the label band supply, a shift in the label sticking position, or the like. Even if the label is cut, the cut label does not shrink or stick to the vacuum drum in a scorched state, and it is not necessary to peel off the label from the vacuum drum before resuming operation as in the conventional case. An object of the present invention is to provide a label attaching device.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a label sticking apparatus for cutting a label band formed continuously in a band shape, rotating a cylindrical plastic container and sticking the cut label to the label band. An auto splicer that supplies a label band coated with a thermal adhesive, a label shift detection sensor for detecting that the label band is supplied so as to be cut at a predetermined position by a cutter, and the label band for each label. A cutter for cutting, a vacuum drum for adsorbing the label cut by the cutter and heating the thermal adhesive, a labeler main body for attaching the label in which the thermal adhesive is in a bonded state to a container, A control device for stopping the operation of the vacuum drum and the labeler body when the label shift detecting sensor detects a shift of the label band; It is a label sticking apparatus characterized by the following.

According to an embodiment of the present invention, the control device includes:
By the output of the product inspection device that inspects the container with the label attached, the operation of the auto splicer is stopped,
Next, when the vacuum drum and the labeler main body stop holding the label, the operations of the vacuum drum and the labeler main body are stopped.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The label for the plastic container having a capacity of 500 ml used here is a stretched plastic label having a total length of 210 mm, and one label is provided at the front end and the rear end on the back side.
The heat welding adhesive is applied with a width of 5 mm. As shown in FIG. 1, the label sticking apparatus 1 has an auto splicer 14 that continuously supplies a label band 10 on which a label L is continuously formed from a roll 12. The label strip 10 supplied from the auto splicer 14 is a feed roll 2
0 controls the feed rate. On the downstream side of the feed roll 20, a displacement detection sensor 21 is installed,
It is detected whether the label band 10 is supplied so as to be aligned with a predetermined position, that is, whether the label band 10 is supplied so as to be cut at a predetermined position by a cutter 24 described below. Level zone 10 normally supplied without deviation
Is cut into a predetermined size by a cutter 24 and is adsorbed to the rotating delivery roll 22.

The cut label L is transferred from the delivery roll 22 to the vacuum drum 30 provided with the hot air blower 36, and is sucked with the back side facing outward. The adhesive applied to the label L adsorbed on the vacuum drum 30 kept at a predetermined temperature is melted by blowing hot air from a hot air blower 36. If the label detection sensor 21 detects that the label L is supplying the label band 10 out of the predetermined alignment tolerance, the auto splicer 14 is first stopped. On the other hand, the delivery roll 22 and the vacuum drum 30 continue to operate normally, and the adhesive applied to the label L adsorbed to the vacuum drum 30 is blown by hot air from the hot air blower 36 to be melted, and the label L is removed from the plastic container B. Pasted in. The supply of the cut label L from the delivery roll 22 is stopped,
When the label L on the delivery roll 22 and the vacuum drum 30 runs out, the entire operation of the label sticking apparatus 1 stops.

As shown in FIGS. 2 and 3, the plastic container B has a capacity of 500 ml, a maximum outer diameter of a portion to which the label L is applied is about 65 mm, and a radius of curvature of the corner is 16.5 mm. is there. The plastic containers B are sequentially supplied on the supply conveyor 50, and are supplied one by one to predetermined positions of the labeler main body 54 by the inlet star wheel 52. In the labeler main body 54, the plastic container B held by the locator 58 is transported in the circumferential direction while being rotated about its vertical axis, and the outermost corner is adsorbed to the vacuum drum 30 so that the label is absorbed by the vacuum drum 30. L comes into contact with the leading end of the label L, and the leading end of the back surface of the label L is adhered to the corner. Thereafter, the plastic container B is conveyed in the circumferential direction while being rotated about its vertical axis. Immediately after the labeler main body 54 separates from the vacuum drum 30, the stationary label suction device 60 is arranged to weakly suck the label L separated from the vacuum drum 30. The label L is pulled by the plastic container B transported in the circumferential direction while rotating, is weakly sucked on the stationary label sucker 60, and slides while maintaining the horizontal position.

The label L goes around the periphery of the plastic container B, and the rear end of the rear surface of the label L remote from the stationary label adsorber 60 reaches the corner where the front end of the rear surface of the label L is adhered. A rear end is attached near the front end of L. The width of the adhesive applied to the rear end of the label L is determined so that the width extends over both the front end of the label L and the surface of the plastic container B. Both are securely attached to the plastic container B. A plurality of brushes 66 are arranged around the labeler main body 54, and press the label L affixed to the plastic container B while sliding. In the vicinity of the discharge end of the labeler main body 54, a CCD image pickup device 80 is arranged, and a label inspection for detecting a displacement between the front end portion and the rear end portion of the label L affixed to the plastic container B by the output of the CCD image pickup device 80. (Not shown).

When the label inspector continuously outputs a signal indicating that the container is defective, the same as when the label detecting sensor 21 determines that the label L is out of the predetermined allowable range of position alignment, as in the case where the label detecting sensor 21 determines that the label L is out of the allowable range. First, the auto splicer 14
Is stopped. On the other hand, the delivery roll 22 and the vacuum drum 30 continue to operate normally, and the adhesive applied to the label L adsorbed to the vacuum drum 30 is melted by blowing hot air from the hot air blower 36 and attached to the plastic container B. . The supply of the cut label L from the delivery roll 22 is stopped, and the delivery roll 2 is stopped.
When the label L on the vacuum drum 2 and the vacuum drum 30 runs out, the entire operation of the label sticking apparatus 1 stops. The plastic container B to which the label L is affixed on the labeler main body 54 is transferred to the outlet starwheel 82. On the outlet star wheel 82, a label defect elimination device 84 that is operated by an output of a label inspection device (not shown) is arranged, and sends the plastic container B with the label L affixed to a predetermined position to a non-defective product conveyor 86, The plastic container B on which the label L is not stuck at a predetermined position is sent to the defective product conveyor 88.

[0014]

According to the present invention, even when the label sticking apparatus is stopped due to a displacement of the label band supply position, a shift of the label sticking position, or the like, the cut label remains on the vacuum drum. There is no shrinking or sticking in a scorched state, and an effect that the label does not need to be peeled off from the vacuum drum before resuming operation as in the related art can be obtained. In addition, loss of label material can be suppressed.

[Brief description of the drawings]

FIG. 1 is a plan view of a label sticking apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of the plastic container according to the embodiment of the present invention.

FIG. 3 is a plan view of the plastic container according to the embodiment of the present invention.

[Explanation of symbols]

 L Label B Plastic container 1 Label pasting device 10 Label band 12 Roll 14 Auto splicer 20 Feed roll 21 Label shift detection sensor 22 Delivery roll 24 Cutter 30 Vacuum drum 36 Hot air blower 50 Supply conveyor 52 Inlet star wheel 54 Labeler body 58 Locator 60 Stationary Label adsorber 66 Brush 80 CCD imaging device 82 Exit starwheel 84 Label defect elimination device 86 Conveyor for non-defective products 88 Conveyor for defective products

Claims (2)

[Claims] 1. A label sticking apparatus for cutting a label band formed continuously in a band shape, rotating a cylindrical container, and sticking the cut label on the label container. An auto splicer to be supplied, a label shift detecting sensor for detecting that the label band is supplied so as to be cut at a predetermined position by a cutter, a cutter for cutting the label band for each label, and a cutter cut by the cutter. A vacuum drum for adsorbing the label and heating the thermal adhesive, a labeler body for attaching the label in which the thermal adhesive has been adhered to a container, and further, the label displacement detection sensor detects the displacement of the label band. Is detected, the operation of the auto splicer is stopped, and then when the vacuum drum and the labeler main body stop holding the label. Serial vacuum drum and label sticking apparatus characterized by comprising a control device for stopping the operation of the labeler body. 2. The control device also stops the operation of the auto splicer according to the output of the product inspection device for inspecting the container on which the label is attached, and then the vacuum drum and the labeler main body stop holding the label. The label sticking apparatus according to claim 1, wherein the operation of the vacuum drum and the labeler main body is stopped.