JPH11105839A - Apparatus and method for sticking label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly and highly accurately stick labels. SOLUTION: A suction drum 11 intermittently rotates so that it temporarily stops when a label 16 which is fed out from a label feed-out head 20 and sucked to an outer peripheral face of the suction drum 11 reaches a label sticking position A. An image pickup device 12 detects a position of the label 16 while the label 16 is sent to the label sticking position A. When the label 16 comes close to the label sticking position A, a work driving part 14 is driven with predetermined timing so that a unit body 15 is fed from a work waiting position to a work pushing position B. Since position correction of a work is performed based on the detection results during the feeding, the position correction does not take time. The unit body 15 which has reached the work pushing position B can be pushed against the suction drum 11 which is temporarily stopping to securely stick the label 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label sticking apparatus and method for sticking a label to a workpiece at high speed and with high accuracy.

[0002]

2. Description of the Related Art A film unit with a lens (product name "Sharun Hi") has been provided by the present applicant so that a photographer can easily enjoy photography even when he is not carrying a camera.
Etc.) are provided. This film unit with a lens is obtained by enclosing a unit body in which an unexposed film and a simple photographing mechanism are built in advance with a box-shaped exterior body such as a paper box.

However, since the box-shaped exterior body has a complicated shape, material costs, punching costs, and the like are required.
There are drawbacks in that the mounting process to the unit body becomes complicated, and disassembly during recycling is troublesome. For this reason, the present applicant sells a film unit with a lens in which a band-shaped label is wound around the outer peripheral surface of the unit main body instead of the box-shaped exterior body (trade name “Sharprun Super Slim”).

[0004]

On the front surface of the unit body, a raised portion for protecting the taking lens and the shutter mechanism is formed, and the label is provided with an opening for projecting the same. When affixing the label to the front surface of the unit body, it is necessary to accurately match the position of the protrusion of the unit body with the opening of the label. However, since the label punching position of the label tape varies, for example, when performing a label sticking operation using a robot hand equipped with a suction head, the position of the label to be sucked to the suction surface of the suction head is not constant. However, it was difficult to apply the label with high accuracy. In addition, if the robot hand is controlled with high precision by accurately measuring the position of each label each time the label is sucked, high-precision label pasting becomes possible, but the drawback that high-speed pasting work becomes difficult. there were.

The position of the label is detected while the label adsorbed on the outer peripheral surface of the suction drum is sent to the label attaching position by the rotation of the suction drum, and the standby position of the work is corrected in accordance with the positional deviation of the label. Japanese Patent Application No. 9-9193 discloses a method of pressing a work against a label sent to a predetermined position by rotation of a suction drum.
Although proposed in No. 7, the work position is corrected while the work is on standby, which hinders speeding up of labeling, and there is room for improvement.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems of the prior art, and has as its object to provide a label sticking apparatus and method capable of sticking a label with higher speed and higher accuracy than before. .

[0007]

In order to achieve the above object, in the label sticking apparatus according to the present invention, when the label fed from the label feeding head and adsorbed on the outer peripheral surface reaches the label sticking position, it is temporarily stopped. A suction drum that rotates intermittently so as to move the workpiece, a workpiece transport unit that transports the workpiece from the workpiece standby position to the workpiece pressing position,
First detecting means for detecting the position of the label in the width direction of the suction drum while the label is sent to the label affixing position, and correcting in the width direction for correcting the position in the width direction during the transfer of the work based on the detection result Means, a second detecting means for detecting the position of the label with respect to the tangential direction of the suction drum while the label is sent to the label affixing position, and, based on the detection result, detecting the position of the label with respect to the tangential direction of the suction drum of the work during conveyance of the work. It comprises tangential direction correcting means for correcting the position, and work pressing means for pressing the work reaching the work pressing position against the paused suction drum and applying a label.

Further, in the label sticking method of the present invention, the suction drum is intermittently stopped so that the label fed from the label feeding head and adsorbed on the outer peripheral surface of the suction drum temporarily stops when reaching the label sticking position. A first step of rotating, a second step of transporting the work from the work standby position to the work pressing position, and detecting the position of the label in the width direction of the suction drum while the label is sent to the label attaching position; A third step of correcting the position of the work in the width direction during the transfer of the work based on the position of the label with respect to the tangential direction of the suction drum while the label is sent to the label attaching position; A fourth step of correcting the position of the suction drum relative to the tangential direction during the transfer of the workpiece based on the By pressing the workpiece reaches the position pushed against the suction drum paused it is made of a fifth step of applying labels.

[0009]

1 and 2 showing a label sticking apparatus according to the present invention, a label sticking apparatus 10 comprises a suction drum 11 and an image pickup device 12 comprising a CCD camera or the like.
And a work drive unit 14. The work used in the label sticking apparatus 10 is a unit body 15 of a film unit with a lens, and the label is a label 16 for the unit body 15.

The label 16 is made of, for example, a sheet such as polyethylene terephthalate (PET) or synthetic paper, and has an elongated strip shape. The label 16 is formed with openings 16a, 16b, etc., corresponding to the raised portion 15a around the lens of the unit body 15, the finder window 15b, and the like. Thus, when the label 16 is attached to the unit main body 15, the raised portion 15a, the finder window 15b, and the like are exposed from the openings 16a, 16b.

The label feeding head 20 is provided in the vicinity of the suction drum 11, and is configured by applying a label tape 22 to a tip end of an edge member 21 provided to protrude in the horizontal direction. The label 16 is formed by stamping the label 16 continuously on the release paper 23 in the vertical direction at a constant posture and at an interval. Roller for winding (not shown)
Is rotated and the release paper 23 is transported in the direction of the arrow, the label 12 is peeled off at the tip of the edge member 21, and the label 12 is fed out one by one in a substantially horizontal direction. Hereinafter, the feeding direction of the label 12 will be referred to as an X direction, and a direction perpendicular thereto will be referred to as a Y direction.

The suction drum 11 includes a drum body 25.
A ring-like elastic member 26 made of rubber or the like is fitted on the outer peripheral surface of the unit, so that the label 16 adsorbed on the elastic member 26 and the unit body 15 pressed against the label 16 are not damaged. The width of the suction drum 11 is
, So that the label 16 can be stably conveyed without protruding from the outer peripheral surface of the suction drum 11. The elastic member 26 is provided with a large number of minute suction openings, and the drum main body 25 has a shaft 25a.
Connected to an external suction blower.

The outer peripheral surface of the suction drum 11 is composed of eight label suction areas 11a having the same interval as the center interval of the labels 4 on the release paper 23, as indicated by a dashed line 27, for example. When a driving force of a motor (not shown) is transmitted to the shaft 25a, one rotation angle is 45 ° and intermittent so that each label suction area 11a temporarily stops at a label sticking position A immediately below the suction drum 11. Is rotated.

The label 16 is fed out of the label feeding head 20 by the intermittent rotation of the suction drum 11 at a timing when the boundary of the label suction area 11a passes near the front end of the edge member 21. The feeding of the label 16 is performed at substantially the same speed as the peripheral speed of the suction drum 11, so that one label adsorbing area 11a has
The labels 16 are sucked without protruding. On the outer peripheral surface of the suction drum 11, a label 4
Since the label suction areas 11a are continuously provided at substantially the same interval as the center interval of the label 4, the labels 16 are sucked at the same interval as the center interval of the labels 4 on the release paper 23. Therefore, the label tape 22 is formed by efficiently punching out the labels 16 at short intervals.

The image pickup device 12 is installed in the vicinity of the suction drum 11 at, for example, a position substantially 90 ° from the label sticking position A, and the outer peripheral surface of the suction drum 11 has a viewing area 12a substantially the same as one label suction area 11a. Is formed. When the label 16 is sent to a position 90 ° from the label attaching position A due to the intermittent rotation of the suction drum 11, the label suction area 11 of the label 16
The entire surface of a is within the visual field range 12a and is imaged. The image signal output from the imaging device 12 is processed by the microcomputer to calculate the amount of displacement of the label 16 in both the X and Y directions with respect to the label reference position. The label reference position is the label 1 sent to the label attaching position A.
6 is the unit body 1 that has reached the workpiece pressing position B.
5 is a predetermined label position in the label suction area 11a which can be stuck on the surface to be stuck in both the X and Y directions without error.

On the left side of the work drive unit 14 in the X direction, a belt conveyor 30 for supplying the unit body 15 before labeling to the work drive unit 14 is provided.
On the right side in the direction, there is provided a belt conveyor 31 for transporting the unit body 15 with the label affixed thereto delivered from the work drive unit to the next process.

In the work drive unit 14, the tray member 3
Reference numeral 5 is for holding one unit main body 15, for example. The tray member 35 includes a pair of guides 35 on both sides in the X direction and both ends in the Y direction in order to hold the unit body 15 in both the X and Y directions.
b and a pair of pins 35a are provided movably up and down.

The shaft 3 to which the bottom of the tray member 35 is fixed
Numeral 6 is supported by a carriage 37 so as to be vertically movable. A plate member 38 is provided on the carriage 37 so as to be slidable in the X direction. Rollers 4 are provided at both ends of the plate member 38.
Trapezoidal member 4 supporting tray member 35 via
4, 45 are fixed. A cylinder 39 for moving the plate member 38 in the X direction is fixed to a base 46 that supports the carriage 37 so as to be movable in the X direction. When the plate member 38 moves in the X direction, the cylinder 39
A work pressing means for vertically moving the tray member 35 via the 4, 45 and pressing the unit body 15 held by the tray member 35 against the suction drum 11 is configured.

The motor 4 fixed on the upper part of the base 46
9 is driven in accordance with the amount of displacement of the label 16 with respect to the label reference position calculated by the imaging device 12 in the X direction, and is held by the tray member 35 together with the carriage 37 via the screw gear 48. Set the unit body 15 to X
It constitutes X-direction correction means for correcting the position of the unit body 15 by moving in the direction.

The base section 46 is slidably provided on a drive base 50. At the bottom of the base 46,
A motor 51 having a gear 51a meshing with a rack gear 50a provided on the drive base 50 is fixed. This motor 51 is used for the label 1 calculated by the imaging device 12.
6 is driven in accordance with the shift amount in the Y direction with respect to the label reference position, and the driving force is transmitted to the rack gear 50a via the gear 51a to slide the base portion 46 in the Y direction to correct the position of the unit body 15. It constitutes a correction means.

The drive shaft 53 fixed to the bottom of the drive base 50 is moved by a drive means (not shown) to the tray member 35.
Work unit driving means for moving the unit body 15 held in the X direction together with the drive base 50 and the base portion 46 in the X direction. The drive shaft 53 moves the empty tray member 35 in order to receive the supply of the unit body 15 to which no label is attached.
It is moved to the work standby position closest to the belt conveyor 30 and the unit body 15 held by the tray member 35 is transported to the work pressing position B at a predetermined timing. Is moved to the conveyance end position closest to the belt conveyor 31 for delivery to the belt conveyor 31;
After the delivery, the empty tray member 35 is moved to the work standby position.
Is returned.

In the present embodiment, a spare label feeding head 20 ′ similar to the label feeding head 20 is provided near the suction drum 11. If a different kind of label is supplied by the spare label feeding head 20 'at the timing described above, it becomes possible to simultaneously apply a plurality of kinds of labels on one line or to switch instantly.

The label sticking apparatus 10 constructed as described above
The operation of will be described. When the unit main body 15 assembled on another assembly line is transported to the end of the belt conveyor 30, the unit main body 15 is detected by the light emitting unit 58a and the light receiving unit 58b of the photoelectric sensor 58. Upon receiving the detection signal from the photoelectric sensor 58, the microcomputer moves the drive shaft 53, moves the tray member 35 to the work standby position, and drives the belt conveyor 30.

The unit body 15 includes a belt conveyor 30.
And is moved toward the tray member 35 by the partition plate 30a. At this time, the pins 35a and the guides 35b provided on the tray member 35 are retracted, and the unit main body 15 is transferred onto the tray member 35 by a pushing lever (not shown). The unit body 15 is regulated in both the X and Y directions by the pin 35a and the guide 35b competing with each other, and is held at a fixed position on the tray member 35.

The suction blower starts driving, and the suction drum 15 starts intermittent rotation in a counterclockwise direction (see FIG. 1). The release paper 24 is wound up for a certain length, and the labels 16 are fed out from the label feeding head 14 one by one in the X direction. The label 16 fed from the label feeding head 14 is sucked into the label suction area 11a sent by the intermittent rotation of the suction drum 11 without disturbing the position and posture on the release paper 23. The label 16 adsorbed on the label adsorption area 11a is sent toward the label attaching position A by the intermittent rotation of the suction drum 11. Since the label 16 does not protrude from the suction drum 11, the label 16 is fed stably without being turned up.

When the label 16 attracted to the label attraction area 11a passes through the imaging area 12a of the imaging apparatus 12 due to the intermittent rotation of the suction drum 11, the imaging apparatus 1
In step 2, the entire label suction area 11a is imaged, and the amount of displacement of the label 16 on the label suction area 11a with respect to the label reference position in both the X and Y directions is calculated. When the rotation of the suction drum 11 advances and the label 16 adsorbed on the label adsorption area 11a approaches the label attaching position A, the drive shaft 53 is moved in the X direction at a predetermined timing. Thus, the unit body 1 held by the tray member 35
5 starts moving from the work standby position toward the work pressing position B.

The movement of the drive shaft 53 causes the tray member 35 to move.
The unit body 15 held at the position
, The position of the unit body 15 is corrected in both the X and Y directions. The motor 49 is driven based on the amount of displacement of the unit body 15 in the X direction,
Slides the unit body 15 together with the tray member 35 in the X direction. Thereby, the position in the X direction when the unit body 15 held by the tray member 35 is sent to the work pressing position B is corrected. The motor 51 is driven based on the displacement of the unit body 15 in the Y direction, and the base 46 slides the unit body 15 together with the tray member 35 in the Y direction. Thereby, the position in the Y direction when the unit body 15 held by the tray member 35 is sent to the work pressing position B is corrected.

This position correction is performed in response to the detection of the amount of displacement of the label 16 in both the X and Y directions with respect to the label reference position in the label suction area 11a by the imaging device 12, so that the transmission type or reflection type sensor is used. It is possible to perform detection with higher accuracy as compared with the conventional one that detects the amount of protrusion of the end of the label from the suction drum using the same, and the position can be corrected with higher accuracy. In addition, since this position correction is performed while the unit body 15 is being transported from the work standby position to the work pressing position B, no extra time is required for the correction, and this greatly contributes to speeding up the sticking of the label 16. be able to.

Due to the intermittent rotation of the suction drum 11, the drive shaft 53 is almost simultaneously with the label 16 attracted to the label attracting area 11a reaching the label attaching position A.
, The unit body 15 held by the tray member 35 reaches the work pressing position B. While the suction drum 11 is temporarily stopped due to the intermittent rotation, the cylinder 39 is driven. Accordingly, the plate member 38 moves in the X direction, and the tray member 35 is raised toward the suction drum 11 via the trapezoid members 44 and 45.

When the front surface of the unit body 15 reaches a position where it comes into contact with the outer peripheral surface of the suction drum 11, the raised portion 15a and the finder window 15b of the unit body 15 are opened.
The label 16 is stuck on the surface to be stuck of the unit main body 15 without error so that the label 16 enters the unit 16a. Since the unit main body 15 is pressed against the suction drum 11 while the intermittent rotation of the suction drum 11 is temporarily stopped, the label 16 is firmly adhered to the unit main body 15, and the label 16 is not turned up and peeled off.

After the label 16 is applied, the cylinder 39 is driven to lower the tray member 35. Next, drive shaft 5
2 moves to move the tray member 35 holding the unit body 15 to which the label has been attached to the transport end position, and drive the belt conveyor 23. Pin 35a and guide 35
b is retracted, and the holding of the unit body 15 of the tray member 35 is released. Unit body 15 with label attached
Is transferred from the tray member 35 to the partition plate 31a of the belt conveyor 31 by an extrusion lever (not shown),
The label 16 is conveyed to the next step of winding the label 16 around the nori winding on the outer peripheral surface of the unit main body 15.

Thereafter, the same operation is repeated, and the labels 16 are attached to the unit body 15 one after another. By such an affixing method, even if the label tape 22 has a variation in the punching position of the label 16 and the position where the label 16 is adsorbed on the label adsorption area 11a on the outer peripheral surface of the suction drum 11 is not fixed, Reference numeral 16 is attached to a correct position of each unit body 15.

Further, by setting a label corresponding to another type of unit main body on the spare label feeding head 20 ', mixed production or short-time line switching can be performed. In this case, when the photoelectric sensor 58 detects the unit main body 15, the shape of the unit main body 15 is determined, and the label feeding head on which the corresponding label is set is driven.

The suction drum is not limited to the cylindrical shape shown in FIG. 1, but may be a cross-shaped suction drum 65 as shown in FIG. In this case, if a portion other than the label suction area 65a passes near the label feeding head, the label feeding is stopped, so that the label tape formed by punching the label at short intervals as in the above embodiment can be used. Can be used.

In the embodiment described above, the imaging device is used for detecting the amount of deviation, but a reflection type or transmission type laser sensor may be used instead. In this case, a suction drum having a width shorter than the entire length of the label may be used, and a portion protruding from the suction drum may be detected.

Although the number of spare label feeding heads is one, the present invention is not limited to this, and three or more label feeding heads can be used for mixed production of various types of film units with lenses. . In this case, it is needless to say that the feeding timing of each label feeding head is adjusted so that another label is not affixed to the label that is already attracted to the outer peripheral surface.

Further, the above-mentioned transport means moves the tray member while holding the unit body by regulating the unit body with a pin or an arm. The unit body is positioned and stored in a bucket chamber provided on a belt conveyor. It may drive a belt conveyor. In this case, by moving the position of the belt conveyor during the conveyance by the belt conveyor,
The correction of the unit body may be performed.

In the present invention, the unit main body is selected as a work for applying a label. However, the present invention can be applied to all fields of label use requiring high accuracy and speed of label application. The label material is PE
In addition to T and synthetic paper, polystyrene (PS), polypropylene (PP), and the like can be used.

[0039]

As described above, according to the label sticking apparatus and method of the present invention, when the label fed from the label feeding head and adsorbed on the outer peripheral surface of the suction drum reaches the label sticking position, it is temporarily stopped. The suction drum rotates intermittently to detect the label position while the label is sent to the label affixing position, and corrects the position of the work based on this detection result. Since it is performed during conveyance to the pressing position so that time is not required for position correction, not only can the label be stuck with high accuracy, but also the speed of label sticking can be greatly increased. In addition, since the workpiece that has reached the workpiece pressing position is pressed against the temporarily stopped suction drum and the label is attached, the label can be firmly attached to the workpiece, and the label can be hardly peeled.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a label sticking apparatus of the present invention from the side.

FIG. 2 is an explanatory diagram showing the label attaching device from above.

FIG. 3 is an explanatory diagram showing another embodiment of the suction drum.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Label sticking apparatus 11 Suction drum 12 Imaging device 14 Work drive part 15 Unit main body 16 Label

Claims (2)

[Claims] 1. A suction drum which rotates intermittently so that a label fed from a label feeding head and adsorbed on an outer peripheral surface thereof temporarily stops when it reaches a label attaching position, and a work is pressed from a work standby position. A work conveying means for conveying the label to a position, a first detecting means for detecting the position of the label in the width direction of the suction drum while the label is sent to the label attaching position, and Width direction correcting means for correcting the position in the direction, second detecting means for detecting the position of the label with respect to the tangential direction of the suction drum while the label is sent to the label affixing position, and conveying the workpiece based on the detection result. Tangential direction correcting means for correcting the position of the work relative to the tangential direction of the suction drum, and And a work pressing means for pressing the work to a paused suction drum to apply a label. A first step of intermittently rotating the suction drum so as to temporarily stop when the label fed from the label feeding head and adsorbed on the outer peripheral surface of the suction drum reaches a label sticking position; A second step of transporting the label from the workpiece standby position to the workpiece pressing position, and detecting the position of the label in the width direction of the suction drum while the label is sent to the label attaching position, and performing the transport of the workpiece based on the detection result. A third step of correcting the position of the work in the width direction, and detecting the position of the label with respect to the tangential direction of the suction drum while the label is sent to the label attaching position; A fourth step of correcting the position of the workpiece with respect to the tangential direction of the suction drum; And a fifth step of applying a label by pressing the label against the stopped suction drum.