JP3553681B2 - Label sticking device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a label sticking device, and more particularly to a label sticking device that sticks a label to a large number of objects to be stuck at high speed.
[0002]
[Prior art]
Recently, as described in U.S. Pat. Nos. 4,423,943, 4,846,418, 5,296,887 and JP-T-5-508943, a patrone body is assembled with a resin molded product. A photographic film patrone has been developed which has a function of sending out a photographic film entirely wound and stored in the patrone by rotation of a spool to the outside of the patrone main body. In such a photo film patrone, a disc-shaped data disk integrally provided on a spool includes a film type (negative film, slide film, corresponding color temperature, etc.), film sensitivity, number of shots, expiration date, manufacturer, A label in which information such as a production lot and production time is recorded in the form of a barcode is attached. For this label, a so-called tack label is used, in which an adhesive is applied thinly on the back and pasted on a release paper. For tack labels, information such as a barcode is printed on a thin resin such as polystyrene pasted on a release paper, and a cut is made in the necessary part of the printed part to form a label part. Unnecessary parts are peeled off for production.
[0003]
[Problems to be solved by the invention]
However, if the notch is not sufficiently cut when the unnecessary portion is peeled off from the release paper, the label portion is also peeled off together with the unnecessary portion, and the label comes off on the label mount. When this label mount is used in a label pasting machine, a spool without a label is formed, which is a problem in quality assurance.
[0004]
In addition, at the time of label sticking, in order to position and stick the labels with high precision after the labels are peeled off, the labels may be positioned one by one using positioning pins or the like. In such a case, when the label has a slight protrusion of the glue and the glue adheres to the positioning pin, the positioned label moves with the movement of the positioning pin after the positioning, and the label deviates from the normal position. Sometimes. Further, the label may be detached from the suction pad by the high-speed positioning device and fly off. When such a trouble occurs, a spool having a label sticking position defect or a spool without a label can be formed, and there is a quality problem.
[0005]
The present invention has been made to solve the above-described problem, and it is intended to prevent a label sticking defect before it occurs, and to eliminate unnecessary use of a body to be stuck due to the label sticking defect. It is intended to provide a device.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the label sticking apparatus according to claim 1, wherein the label is sucked and held by a suction pad, and a label sticking apparatus that sticks a label to a body to be stuck by the suction pad, A suction drum provided with a plurality of the suction pads at the same pitch in the circumferential direction; and one suction pad provided with the suction drum. At the minute pitch The intermittent feed means and the suction pad Station to stop Label sending means for sending a label to the suction pad stopped at the station, Downstream of label sending means Position correction means provided in the station of the suction pad to correct the label position of the suction pad, Downstream of position correction means Label misalignment detecting means provided at the station, and detecting misregistration of the label of the suction pad stopped at the station; Downstream of label displacement detection means At the station, By label displacement detection means Label removing means for removing a label for which a position shift has been detected; A label detecting means provided at a station downstream of the label removing means for detecting the presence or absence of a label on the suction pad; And a suction pad pushing unit that pushes the suction pad stopped at this station toward the adherend and sticks the label to the adherend, and a suction pad for which no label is detected by the label detection unit is pushed out. The apparatus further comprises a defective product discharging means for tracking the adherend at the position and discharging the adhered body when it is sent to the defective product discharge position.
[0009]
Also, Claim 2 The label pasting device described in the above, using a bar code label that is formed in an annular shape, has an arc-shaped notch in a part of the peripheral edge, and arranges a fan-shaped bar that is long in the radial direction in the circumferential direction, The disk plate of the spool shaft of the photo film patrone is used as an adherend.
[0010]
When the label is sent from the release paper by the label sending means, the suction pad at the first station of the suction drum sucks the label. Thereafter, the suction drum rotates intermittently by one pitch of the suction pad, and the suction pad that has sucked the label is located at the next station, and the suction pad that has not absorbed the label is located at the first station.
[0011]
At the next station, the position and orientation of the label are corrected by the position correcting means. First, a centering pin and two position correcting pins are inserted into the suction pad. The centering of the label is performed on the suction pad by inserting the centering pin. Thereafter, since the position correcting pin is opened by the pin opening / closing means, the position correcting pin comes into contact with both side edges of the notch of the label, and the position of the label in the rotational direction is corrected. Next, after the position correcting pin is closed, the centering pin and the position correcting pin are removed from the suction pad. Thus, the position and orientation of the label can be easily corrected.
[0012]
The label whose position and orientation has been corrected by the intermittent rotation of the suction drum is sent to the next station, where the suction pad is pushed out to the adherend by the pushing means, and the label on the suction pad is covered via the adhesive layer. It is pasted on the pasted body.
[0013]
The label whose position and orientation have been corrected is sent to the next station by the intermittent rotation of the suction drum, where the displacement of the label is detected. For the displacement of the label, for example, the position of each point on the edge of the label is detected using a photoelectric sensor. Since the photoelectric sensor detects the label to be detected at a position slightly deviated from each point of the label set at the regular position, the label is not detected at each point when the label is at the regular position. When the label is shifted, the label is detected at one or more of the points, thereby detecting the position shift.
[0014]
If the label is misaligned, for example, at the next station, the misaligned label is removed from the suction pad by the label removing means. The removal of the label is performed by pressing the removal plate against the label and attaching the label to the removal plate, and the label on the removal plate is removed by a scraper or the like as necessary.
[0015]
At the next station, the presence or absence of the label is detected. If the label that is out of position in the previous station is removed, or if there is a missing label on a part of the label mount, there is no label on the suction pad and this is detected.
[0016]
In the next station, the suction pad is extruded by the extruding means toward the adherend, and the label on the suction pad is adhered to the adherend via the adhesive layer. In addition, even when an adsorption pad without a label is located, the attaching operation is performed, but the attached object without the label is tracked, and the attached object without the label is moved to the defective product discharging position. It is discharged from the production line to a defective tray.
[0017]
Each label is affixed side by side on the release paper, with the opposite side of the arc-shaped notch of each label positioned on the leading end side in the feed direction of the release paper. Is peeled off.
[0018]
As shown in FIGS. 2 and 3, the label mount 10 includes a strip-shaped release paper 11, a label 12 formed in an annular shape and having an arc-shaped notch 12 a in a part of the peripheral edge, and a label 12 on the back surface of the label 12. And a pressure-sensitive adhesive layer 14 provided in layers. Then, the labels 12 are arranged on the release paper 11 in a line at a predetermined pitch in the mounting board feed direction with the opposite side to the arc-shaped notch 12a of each label 12 at the leading end side of the release paper 11 in the feed direction (arrow A). It is stuck.
[0019]
As shown in FIG. 3, the label 12 includes a base member 16 and a printing layer 17 on which a bar code 13 indicating a film type or the like is printed on the surface of the base member 16. As shown in FIG. 4, a portion where the barcode 13 is not formed is cut out in an arc shape, and the notch 12a serves as a locking portion for correcting the position of the label in the circumferential direction. . A center hole 12b is formed in the center of the label 12, and an engaging end 15a (see FIG. 1) of the spool shaft 15 projects from the hole 12b. The center hole 12b is used for centering when correcting the position and posture of the label 12.
[0020]
As shown in FIG. 2, the alignment posture of each label 12 on the release paper 11 is such that the circumferential center line C1 of the notch 12a is aligned with the feed direction A of the release paper 11, as shown in FIG. Alternatively, one in which one edge 12c of the notch 12a is aligned with the width direction of the release paper 11 may be used. In this case, by detecting the edge 12c, the pitch P of each label 12 can be easily detected, and the position of the label 12 can be detected with high accuracy.
[0021]
With respect to the mounting direction of each label 12 to the release paper 11, particularly good peeling of the label becomes possible by positioning the arc area indicated by B1 in FIG. The arrow A1 indicates the direction in which the release paper 11 is fed, and the arrow A2 indicates the direction in which the label 12 is released. Further, even if the arc area of B2 excluding B1 is positioned at the leading end of the release paper 11 in the feed direction, good peeling is possible. On the other hand, when each of the labels 12 is attached with the arc-shaped notch 12a positioned on the leading end side in the feed direction of the release paper 11, peeling failure may occur. This is due to the fact that at the start of peeling, there are a plurality of peeling points, and at the corners, when the label 12 is cut off, the label 12 is easily inserted into the release paper 11, whereby this part becomes the peeling starting point. Then, peeling becomes difficult. In addition, since the arc-shaped notch 12a is determined according to the length of the barcode, the opening angle of the notch may be increased accordingly. However, the opening angle of the notch is desirably less than 180 ° so that the tip of the corner does not become the peeling start point during peeling.
[0022]
【Example】
FIG. 7 is a front view showing a label sticking apparatus embodying the present invention. The gantry 20 is provided with a label affixing device main body 22 via a position fine adjustment pedestal 21 and a work feeding device 24 via a mounting bracket 23. The position fine adjustment table 21 is configured by combining an X-direction moving bet and a Y-direction moving bet, and finely adjusts a label sticking position.
[0023]
As shown in FIG. 8, the work feeding device 24 is composed of a turntable 26 provided with, for example, four holding stands 25 for holding the spool shaft 15 (see FIG. 1) as an object to which the label 12 is adhered. As shown in FIG. 7, the turntable 26 is intermittently fed by the pitch of the holding table 25 via a motor 27 having a speed reduction mechanism and a timing belt 28. In each of the stations WS1 to WS3 at which the holding table 25 stops, the spool shaft supply unit 30 is provided in the first station WS1, the suction drum 50 of the label affixing device body 22 is provided in the second station WS2, and the third station WS3 is provided in the third station WS3. A spool shaft discharge unit 31 is provided. Note that the number of the holding tables 25 is not limited to four, and may be appropriately increased or decreased as long as the number is three or more. Also, a large number of the holding tables 25 may be provided to increase the number of stations. In this case, the intermittent feeding time can be reduced.
[0024]
The spool shaft discharge unit 31 is configured by providing a spool holding unit 33 at both ends of an arm 32 that rotates intermittently. The spool holding portion 33 is configured to be able to move up and down in addition to holding the spool shaft 15. After holding the spool shaft 15, the spool holding portion 33 lifts the spool shaft 15 upward and removes the spool shaft 15 from the holding table 25. Then, by rotating the arm 32 by 180 degrees, the extracted spool shaft 15 is discharged to the finished product tray 34 or the transport means (a conveyor or the like) in the next process. Further, the spool shaft 15 to which the label 12 is not attached releases the grip of the spool shaft 15 when the arm 32 rotates 90 degrees, and discharges the spool shaft 15 without a label to the defective tray 35. Since the label-free spool shaft 15 is simply affixed with no label and the spool shaft itself is not defective, it is returned to the spool shaft supply unit 30 and reused.
[0025]
As shown in FIG. 7, the label mount 10 is wound on a sending reel 40 and set on a reel setting shaft 41. The label mount 10 pulled out from the delivery reel 40 is adjusted in tension by a damper roller 42 and sent to a peeling edge 45 via guide rollers 43 and 44. The release paper 11, which is bent at an acute angle at the release edge 45 and from which the label 12 has been released, is taken up on a take-up reel 48 via a guide roller 46 and a feed roller pair 47. Since the feed roller pair 47 intermittently feeds the release paper 11 by one pitch of the label 12, the label 12 is successively peeled off at the peeling edge 45 by this intermittent feed. The peeled label 12 is sucked by the suction pad 51 located at the first station S1 of the suction drum 50 as shown in FIG.
[0026]
As shown in FIG. 1, the suction drum 50 is provided near the peeling edge 45. The suction drum 50 is formed in a disk shape, and has mounting holes 52 for eight suction pads 51 in the radiation direction. A round hole 53 is formed in the center, and a cam roller 54 of the suction pad 51 and an eccentric cam 55 of the pad pushing section 66 described later are arranged in the round hole 53.
[0027]
Eight suction pads 51 are attached to the peripheral surface of the suction drum 50 at the same pitch. As shown in FIG. 7, a rotation mechanism 61 for the suction drum 50 is provided inside the machine frame 60. The rotation mechanism 61 intermittently rotates the suction drum 50 by 45 °, as shown in FIG. Then, the suction pads 51 are positioned at the stations S1 to S8.
[0028]
As shown in FIG. 1, at the first station S1, the label 12 peeled off by the peeling edge 45 is sucked by the suction pad 51. In the second station S2, the label position correcting section 62 corrects the centering of the label 12 and the correction of the rotational position. In the third station S3, the label displacement detecting unit 63 detects the displacement of the label 12. In the fourth station S4, the label 12 whose position has been detected by the label removing unit 64 is removed from the suction pad 51. In the fifth station S5, the presence or absence of the label 12 on the suction pad 51 is detected by the label detection unit 65. In the sixth station S6, the pad body 59 is lowered by the eccentric cam 55 of the pad pushing section 66, and the label 12 is attached to the disk 15b of the spool shaft 15 on the holding stand 25 waiting below. The seventh and eighth stations S7 and S8 are idle stations.
[0029]
FIG. 9 is a sectional view showing the suction pad 51. The suction pad 51 is composed of a cylindrical pad body 59, and a cylindrical outer case 67 and a middle case 68 that hold the pad body 59 movably in the axial direction. It is fitted into the mounting hole 52 from outside. The mounting hole 52 is formed with a step 52a in the middle, and the inner end 67a of the outer case 67 is engaged with the step 52a. Further, the outer end 67 b of the outer case 67 is locked by a mounting flange 69 provided on the peripheral surface of the suction drum 50 so as to cover the mounting hole 52, and the suction pad 51 may fall out of the mounting hole 52. Have been without.
[0030]
The middle case 68 is composed of an inner case main body 68a and an outer case main body 68b which are divided into upper and lower parts for easy assembly. These case main bodies 68a and 68b are integrated via mounting screws (not shown). In the middle case 68, a spring holding ring 70, a pad body 59, and a coil spring 71 which is mounted in a contracted state therebetween are arranged. The case 68 is prevented from falling off. The coil spring 71 urges the pad body 59 outward, and as described later, the cam 55 pushes down the middle case 68 so that the pad body 59 contacts the disk 15 b of the spool shaft 15 of the holder 25. The pad body 59 escapes into the inside of the middle case 68 when the middle case 68 is pressed down further. As a result, the pad body 59 is strongly pushed down toward the disk 15b by the restoring force of the coil spring 71, so that the label 12 can be securely adhered to the disk 15b.
[0031]
The pad body 59 is made of stainless steel, and has a guide hole 76 formed along its axis on a tip surface 59a, and a guide notch 77 formed on a part of the periphery. When the position of the label 12 is corrected, a centering pin 80 (see FIG. 10) is inserted into the guide hole 76 to center the label 12. Further, two rotation position correction pins 81 and 82 are inserted into the guide notch 77, and the rotation position of the label 12 is corrected.
[0032]
Further, as shown in FIG. 10, the tip end surface 59a of the pad body 59 is buffed and has a smooth surface. Further, a plurality of suction ports 83 are opened in the distal end face 59a, and are connected to a suction tube 86 via a passage 84 and a joint 85 as shown in FIG. The suction tube 86 is connected to a vacuum tank 88 via a solenoid valve 87. Therefore, the label 12 is sucked and released by the control of the solenoid valve 87.
[0033]
A coil spring 89 for urging the middle case 68 toward the center of the suction drum 50 is attached between the outer case 67 and the middle case 68. Further, a cam roll 54 is attached to the inner end of the middle case 68 via a bracket 90 and a mounting shaft 91, and this cam roll 54 is in contact with the eccentric cam 55 of the pad pushing section 66.
[0034]
As shown in FIG. 1, a label position correcting section 62 is provided above the suction pad 51 of the second station S2. The label position correction unit 62 includes a label position correction head 95, an elevating cylinder 96 for raising and lowering the label position, and an opening / closing cylinder 99 for opening and closing the rotational position correction pins 81 and 82 of the correction head 95. The elevating cylinder 96 and the opening / closing cylinder 99 are composed of air cylinders, and are driven by supplying compressed air. A correction pin opening / closing head 100 is attached to the rod end of the opening / closing cylinder 99. As shown in FIG. 10, the opening / closing head 100 has a tip formed in a conical shape, and is inserted into a gap between the position correcting pins 81 and 82 to open and close the position correcting pins 81 and 82. The lift cylinder 96 and the opening / closing cylinder 99 may use other reciprocating means such as a cam or a link instead of using an air cylinder.
[0035]
The label position correcting head 95 includes a head main body 101 and position correcting rings 102 and 103. The head main body 101 is provided with a centering pin 80, and the centering pin 80 is formed of a Teflon stepped shaft. The tip of the centering pin 80 is formed in a conical shape, and the centering of the label 12 is performed by the conical portion 80a. A large number of air outlets 80c are formed in the step portion 80b in the circumferential direction, and the air outlets 80c are connected to the compressed air supply tube 109 via the air passage 101a in the head main body 101. I have. Then, after the correction head 95 is lowered to correct the position of the label, compressed air is supplied from the tank 111 via the compressed air supply tube 109 and the solenoid valve 110 immediately before the correction head 95 is raised, and the correction head 95 is When the stroke reaches the stroke end, the supply of the compressed air is shut off. Thus, when the centering pin 80 is extracted from the center hole 12b of the label 12 after the position correction, air is blown out from the air blowout port 80c. Therefore, even if the label 12 has a protrusion such as an adhesive layer, the label 12 is not lifted together with the centering pin 80 due to the protrusion of the adhesive layer.
[0036]
The position correcting rings 102 and 103 are rotatably mounted on the shaft portion 80d of the centering pin 80, and the rings 102 and 103 are dropped from the shaft portion 80d by a mounting ring 104 screwed to the shaft portion 80d. Have been without. Rotational position correction pins 81 and 82 made of stainless steel are attached to the position correction rings 102 and 103. The position correction rings 102 and 103 are urged by coil springs 105 and 106 so that the correction pins 81 and 82 approach each other. Therefore, the position correcting pins 81 and 82 are normally closed and close to each other with a gap formed such that the tip of the opening / closing head 100 can be inserted. Then, after the correction head 95 is pushed down by the lifting cylinder 96 and the centering pin 80 is inserted into the center hole 12b of the label 12, the opening / closing head 100 is inserted between the position correction pins 81 and 82 by a predetermined amount. Then, the position correcting pins 81 and 82 are opened by the length of the arc-shaped notch 12a of the label 12, and the rotational position of the label 12 is corrected about the center hole 12b.
[0037]
As shown in FIG. 11, the label displacement detecting unit 63 is composed of five reflective light emitting and receiving elements 63a to 63e, and is separated from the peripheral edge of the label 12 set at the regular position by a distance L (for example, (L = 0.1 mm), and the reflected light at the points P1, P2,. The points P1 and P2 detect the displacement of the label 12 in the rotation direction, the points P3 and P4 detect the displacement of the label in the horizontal direction, and the points P1, P2 and P5 detect the displacement of the label in the vertical direction. Then, it is sent to the controller 115 (see FIG. 7). The controller 115 detects a label displacement by turning on one of the light emitting / receiving elements 63a to 63e. Note that the number and arrangement of the light emitting and receiving elements are not limited thereto, and may be changed as appropriate. FIG. 12 shows an example of the label 12 whose position is shifted. This position shift is detected by turning on the light emitting and receiving elements 63a and 63c for detecting P1 and P3.
[0038]
As shown in FIG. 1, the label removing unit 64 includes a removing plate 120 and an air cylinder 121. The label removing unit 64 comes into contact with the label 12 on the suction pad 51 in which the displacement has been detected, and removes the label 12. And remove the label 12 from the suction pad 51. The label 12 of the suction pad 51 is peeled off by a scraper (not shown). The scraper is adapted to move on the surface of the removing plate 120 after the reciprocation of the suction pad 51, thereby peeling off the label 12 on the removing plate 120. The removal plate 120 has an arc-shaped cross section so that the entire surface of the label 12 is not adhered, and the label 12 is easily peeled off with a scraper. In addition to the automatic peeling of the label by the scraper, when the removed label 12 accumulates on the removing plate 120, it may be appropriately peeled by the operator.
[0039]
In the detection of label removal at the fourth station S4, a pressure sensor (not shown) is provided on the suction tube 86 (see FIG. 9) of each suction pad 51, and the label 12 is removed from the suction tube 51 at the fourth station S4. This is performed by detecting a change in the suction pressure of the suction pad 51 at that time. When the label removal fails, the air cylinder 121 operates again to remove the label 12.
[0040]
The label detecting section 65 of the fifth station S5 is constituted by a label sensor 123 composed of a reflection type light emitting and receiving sensor, and detects whether or not the label 12 is on the suction pad 51. This detection signal is sent to the controller 115. Instead of the reflection type light emitting / receiving sensor, the pressure fluctuation of the suction pad is detected by the pressure sensor in the same manner as the label detection in the label removing unit 64, and the presence or absence of the label 12 on the suction pad 51 is determined based on the pressure fluctuation. May be detected. Alternatively, the label 12 on the suction pad 51 may be imaged by a television camera, and the imaged data may be subjected to image processing to extract, for example, the edge of the label 12, and the presence or absence of the label 12 may be detected from the edge pattern.
[0041]
As shown in FIG. 7, the pad pushing section 66 includes a motor 107, a timing belt 108 rotated by the motor 107, and the eccentric cam 55 (see FIG. 9). Then, the middle case 68 is pushed down via the cam roll 54. As a result, the pad body 59 descends, and the label 12 is adhered to the disk 15 b of the spool shaft 15 by the adhesive layer 14.
[0042]
The controller 115 is composed of a well-known microcomputer. In addition to controlling the sequence of each unit, when a label displacement is detected, the air cylinder 121 is operated at the fourth station S4 to reciprocate the removing plate 120. Then, the label 12 having the misalignment is removed from the suction pad 51. Further, the controller 115 tracks the spool 15 to which the label 12 has not been attached, and controls the spool holding portion 33 when the spool 15 is set in the spool discharge station WS3 as shown in FIG. Then, the spool 15 is discharged to the defective product tray 35.
[0043]
Next, the operation of this embodiment will be described with reference to the drawings based on the flowcharts of FIGS. As shown in FIG. 7, the label mount 10 wound on the take-up reel 40 is set on the reel mounting shaft 41, and the leader tape is transported by the rollers 42, 43, 44, 46, 47 and the peeling edge 45. After passing through the path, the tip is fixed to the take-up reel 48. The label 12 that has come close to the peeling head 45 is detected by a label detection sensor (not shown), and the label 12 is stopped after being sent to the peeling head 45 based on this detection signal. As a result, the release paper 11 is bent at an acute angle by the release head 45, so that the label 12 is separated from the release paper 11, and the label 12 is suctioned and held by the suction head 51 in the first station S1 of the suction drum 50. Is done. Thereafter, the suction drum 50 rotates intermittently by one pitch, and the suction head 51 holding the label 12 is positioned at the second station S2. An empty suction head 51 is located in the first station S1, and the label 12 is suctioned in the same manner.
[0044]
In the second station S2, the position correction head 95 is lowered to perform centering of the label 12 and correction of the rotational position. First, the centering of the label 12 is performed on the suction head 51 by inserting the centering pin 80 into the center hole 12 b of the label 12. Further, when the position correction pins 81 and 82 are opened, the label 12 rotates about the center hole 12b, and the rotation position is corrected. Next, after the position correction pins 81 and 82 are closed, the correction head 95 is raised. At this time, as shown in FIG. 10, since air is blown out from the air outlet 80 c of the step portion 80 b of the centering pin 80, the label 12 is not lifted together with the centering pin 80, and is held in a position corrected state. I have. By using the centering pin 80 and the position correcting pins 81 and 82, in the embodiment, the maximum positional deviation correction amount of about 2 to 2.5 mm is secured. In order to secure a larger displacement correction amount, the total number of stations is increased, and another label position correction unit 62 is provided between the second and third stations. As a result, the positional deviation can be corrected step by step at each station, and the overall positional deviation correction amount can be increased.
[0045]
Next, when the suction drum 50 is intermittently fed by one pitch, the label 12 is similarly sucked at the first station S1, and the centering of the label 12 and the rotation position are corrected at the second station S2. Is Further, in the third station S3, the position shift of the label 12 is detected by the label position detecting unit 63, and if the position of the label 12 is shifted, the label 12 shifted in the next fourth station S4 is labeled. It is removed by the removing unit 64. As shown in FIG. 1, in the fifth station S5, the presence or absence of a label is detected by the label detection section 65, and this detection signal is sent to the controller 115. In the sixth station S6, the pad pushing section 66 is operated to attach the label 12 to the disk 15b of the spool shaft 15 on the holding base 25. When the suction pad 51 is lowered, the middle case 68 is first lowered via the cam roller 54 by the rotation of the eccentric cam 55 as shown in FIG. Then, even after the pad body 59 is pressed against the disk 15b of the spool shaft 15, the middle case 68 is slightly lowered. Therefore, the pad body 59 strongly presses the label 12 against the disk 15b by the bias of the coil spring 71, and the label 12 is securely attached. When the eccentric cam 55 makes one rotation, the middle case 68 enters the suction drum 50 by the bias of the coil spring 89 and returns to the initial position.
[0046]
As shown in FIGS. 13 and 14, the controller 115 stores the suction pad number in the case of the suction pad 51 having no label 12 and the number of the holding table 25 combined with the suction pad 51 in the sixth station S6. Correspond. Then, when the holding table 25 is set in the third station WS3, the controller 115 controls the spool holding unit 33 to discharge the spool 15 to the defective product tray 35. Otherwise, the spool 15 is discharged to the finished product tray 34.
[0047]
[Results]
Label sticking apparatus: The schematic dimensions of the apparatus shown in FIG. 7 were 1600 mm in height, 750 mm in width and 1100 mm in depth, and the outer diameter of the suction drum was about 260 mm. As the suction pad 41, a stainless steel pad having a thickness of 47 mm was used.
Label mount: The label mount 10 shown in FIGS. 2 and 3 was used. A width of 21 mm and a length of about 375 m were wound on a delivery reel to form a roll. The delivery reel outer diameter was about 300 mm. The label 12 had the shape shown in FIG. 4 and had a diameter of the outer peripheral circle of 17.5 mm, an angle of the arc-shaped notch 12a of 126 degrees, and a diameter of the hole 12b of 8.6 mm. As the pressure-sensitive adhesive layer 14, an acrylic pressure-sensitive adhesive was used, in which labels 12 were arranged and attached to a release paper 11 at a pitch P = 20.6 mm.
Work: The work on which the label is to be attached in FIG. 1 is made of resin and has a cylindrical spool shaft 15 having an inner diameter of 7 mm, an outer diameter of 12 mm and a length of 38 mm, and a disk having an outer diameter of 18.5 mm and a thickness of 0.9 mm. 15b, and were continuously supplied to the holding table 25 at an interval of 78 mm.
Operating conditions: The vacuum pressure of the suction pad was 240 mmHg, the rotation speed of the table motor was 54.5 rpm, and the rotation speed of the attaching motor was 198 rpm.
Operating performance: At a cycle time of 0.7 sec, a sticking capacity of 84 sheets / min and a sticking accuracy of ± 0 to 0.1 mm were obtained. In addition, a spool shaft having a misaligned label is no longer manufactured. Furthermore, all the spool shafts 15 to which the barcode label 12 is not attached are discharged to the defective product tray, and are prevented from being mixed into the finished product tray.
[0048]
In the above embodiment, eight suction pads 51 are provided on the suction drum 50. However, the number of the suction pads 51 may be one or more. It is good to set to. By increasing the number of the suction pads 51, the amount of intermittent rotation of the suction drum 50 is reduced, and the processing capacity can be increased accordingly. Further, when the number of stations is increased due to the increase of the suction pads 51, the label position can be corrected stepwise at each station, so that the label position can be largely corrected, and the correction accuracy can be improved. You can also. Furthermore, a heat or glue application step for a heat-sensitive label or a roll label may be performed using the increased number of stations.
[0049]
Further, in the above embodiment, the mounting shaft of the suction drum 50 is arranged in the horizontal direction. However, the mounting shaft may be arranged in the vertical direction. In this case, the suction drum 50 rotates in a horizontal plane. In the above-described embodiment, the presence or absence of the label 12 is detected at the fifth station S5. However, when there is no room in the station, the presence or absence of the label 12 may be detected by disposing between the stations. . Similarly, the detection of the positional deviation of the label 12 may be performed during intermittent feeding between stations in synchronization with the feeding.
[0050]
In the above embodiment, a tag label having an adhesive layer is used, but this is applicable to any label such as a heat-sensitive label having a heat-adhesive adhesive layer or a roll label of a type to which an adhesive layer is applied. can do. In the above embodiment, the bar code label 12 is circular. However, the present invention can be applied to a label having a shape other than a circle, such as a rectangle, a polygon, an ellipse, or any other shape. In the above-described embodiment, the label 12 on which the barcode 13 is printed in advance is used. In addition, a white label or a label made of a thermosensitive recording sheet is used. You may.
[0051]
Further, the adherend to which the label 12 is attached can be applied to a material such as paper, aluminum, and aluminum vapor deposition such as PE and PS, in addition to plastic such as PE (polyethylene) and PS (polystyrene).
[0052]
In the above embodiment, the position of the label 12 was corrected while keeping the suction pressure unchanged. In addition, the suction pressure of the label 12 was reduced to reduce the label holding force by the pad body 59, and the position of the label 12 was changed. May be corrected. When removing or attaching the label 12, the suction pressure may be reduced or the suction may be stopped. Further, in the above-described embodiment, the centering pin 80 and the position correction pins 81 and 82 are integrally provided so that the centering and the correction of the rotational position can be performed in one station. The centering and the correction of the rotational position may be performed at different stations.
[0053]
As shown in FIG. 3, the label mount 10 generally includes a release paper 11, an adhesive layer 14, a base member 16, and a print layer 17. The base member 16 is preferably made of a material having good workability for attachment and good flatness. In addition to polystyrene (PS), transparent polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), acrylic, polycarbonate, triacetate, A film such as vinyl chloride may be used. Particularly, from the viewpoint of recycling, it is preferable to use the same material as the spool shaft 15 for the base member 16.
[0054]
The base member 16 may be any of a non-stretched film, a uniaxially or biaxially stretched film, but is preferably a uniaxially or biaxially stretched film from the viewpoint of heat resistance, particularly a biaxially oriented polystyrene film or a biaxially oriented polypropylene. Films and biaxially oriented polyethylene terephthalate films are preferred. The thickness of the base member 16 is 10 μm to 90 μm, preferably 20 μm to 80 μm, particularly preferably 30 μm to 70 μm, and most preferably 40 μm to 60 μm. If it is less than 10 μm, the strength is insufficient, and if it exceeds 90 μm, it becomes expensive and it becomes difficult to make a stretched film.
[0055]
In order to increase the reflectance of the space portion (high-level pattern) of the barcode 13, a vapor deposition layer is provided on the base member 16 or a white reflection layer is provided. In particular, the vapor deposition layer is preferable for increasing the reflectance of the space portion and improving the detection power of the barcode 13. Also, paper can be used for the base member 16, but if there is a lot of irregular reflection on the paper surface, reading using a photodiode may not be possible.
[0056]
(Adhesive layer)
Examples of the pressure-sensitive adhesive that can be used for the pressure-sensitive adhesive layer 14 include rubber-based, acrylic-based, vinyl ether-based, and silicone-based adhesives. In the production and application stages of adhesives, solvent-based adhesives, non-aqueous emulsion-type adhesives, aqueous emulsion-type adhesives, water-soluble adhesives, hot-melt-type adhesives, liquid-curable adhesives, delayed A tack-type adhesive or the like can be used.
[0057]
(Rubber adhesive)
The rubber-based pressure-sensitive adhesive is described in detail in New Polymer Library 13, Adhesion Technology, Polymer Publishing Association, P41-P42 (1987). Rubber-based pressure-sensitive adhesives are composed of elastomers, tackifier resins, curing agents, antioxidants, fillers, etc. By properly combining these, various physical properties can be balanced to produce the desired pressure-sensitive adhesive. .
B) Elastomer
Natural rubber (NR), isobrene rubber (IR), styrene-butadiene rubber (SBR), styrene-butadiene block copolymer (SBS), styrene-isoprene block copolymer (SIS), butyl rubber, polyisobutylene, silicone rubber, polyvinyl isobutyl Ether, chloroprene rubber, nitrile rubber, graft rubber, recycled rubber
B) Tackifier resin
Rosin, ester gum, etesul gum H, polyterpene resin, C ₅ Petroleum resin, C ₉ Petroleum resin _, DCPD petroleum resin _, Styrene resin, alkyl phenol resin, terpene phenol resin
C) softener
Various plasticizers, polybutene, liquid tackifier resin, polyisobutylene low polymer, polyvinyl isobutyl ether low polymer, lanolin, depolymerized rubber, process oil, vulcanized oil
D) Filler
Zinc flower, titanium oxide, silica, aluminum hydroxide, calcium carbonate, barium sulfate, starch, clay, talc
The filler is used for the purpose of cost reduction, improvement of cohesive strength, coloring and the like. Zinc flower is a drug listed in the Pharmacy Law and is non-toxic, persistent, protective and has some antiseptic properties. It is also used as a white colorant, and further hardens when used in combination with titanium oxide. Silica helps to increase the cohesive strength of the system. Charcoal is used to reduce costs. When a filler is used as a solvent-based pressure-sensitive adhesive, it is necessary to knead the filler with rubber by a roll in advance and dissolve the filler in a solvent.
E) Anti-aging agent
2.6 di-tert-butyl-4-methylphenol, 2.5 di-tert-butylhydroquinone, mercaptobenzimidazole, 1.1 bis (4-hydroxyphenol) cyclohexane, phenyl beta naphthylamine
Substances having an unsaturated group, such as natural rubber and tackifier resin, are oxidized and aged over time by oxygen in the air. In particular, deterioration is accelerated by heat, ultraviolet rays, and the like. For this reason, an antioxidant is used for the rubber-based pressure-sensitive adhesive.
[0058]
[Vinyl ether adhesive / silicone adhesive]
Examples of the vinyl ether-based pressure-sensitive adhesive include those mainly containing an alkyl vinyl ether polymer having 2 to 4 carbon atoms, and those obtained by mixing a plasticizer with a vinyl chloride / vinyl acetate copolymer, a vinyl acetate polymer, polyvinyl butyral, or the like. Silicone-based pressure-sensitive adhesives use rubber-like siloxane to provide film formation and film cohesion, and resinous siloxane to provide tackiness and adhesion.
[0059]
(Acrylic adhesive)
Acrylic pressure-sensitive adhesives are preferably used for photographic films because they do not adversely affect photographic properties. The bar code label 12 must satisfy required physical properties after being attached to the disk 15b of the spool shaft 15. That is, in a situation where a camera or a photographic film cartridge is placed, for example, in a situation such as in a car or outdoors where high humidity, high temperature, low temperature, high temperature and low temperature are repeated, the barcode label 12 is peeled off, turned over, or wavy. It must not shrink, shrink, crack, or protrude. Therefore, the adhesive must be durable.
[0060]
The pressure-sensitive adhesive composition of the pressure-sensitive adhesive layer includes an alkyl acrylate monomer having an alkyl group having an average of 4 to 12 carbon atoms, a non-polymerizable vinyl compound, a monoethylenically unsaturated and polar non-polymerizable monomer, if necessary. It is an acrylic pressure-sensitive adhesive to which a tackifier has been added. The non-polymer mainly composed of an acrylate used for the bar code label 12 has excellent chemical resistance, heat resistance, oxidative deterioration, and weather resistance, and has performance meeting the above requirements.
[0061]
The method for producing the acrylic pressure-sensitive adhesive is not particularly limited, and any polymerization method such as solution polymerization, emulsion polymerization, or UV polymerization or electron beam polymerization which is simultaneously performed with coating can be used. Ultraviolet rays are electromagnetic radiation having a wavelength range of about 180 nm to about 460 nm, and a mercury arc, a low-pressure, medium-pressure, high-pressure mercury lamp, or the like is used as an ultraviolet ray source. The irradiation time is generally on the order of 0.1 to 10 seconds. In the case of curing by ultraviolet irradiation, a photoinitiator such as benzoin or benzophenone is used, and the amount is appropriately used in the range of 0.01% by weight to 20% by weight. The electron beam refers to accelerated radiation of nuclear particles, and the dose is generally appropriately irradiated by an electron accelerator within a range of about 0.01 to 100 Mrad.
[0062]
Examples of the alkyl acrylate monomer having an alkyl group having an average of 4 to 12 carbon atoms include n-butyl acrylate, isobutyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, and isooctyl acrylate, for obtaining basic physical properties as a pressure-sensitive adhesive. The content of these alkyl acrylate monomers is preferably 69 to 99% by weight.
[0063]
The monoethylenically unsaturated and polar copolymerizable monomer is a monomer containing a functional group such as a hydroxyl group, a carboxy group, an acid amide, or an epoxy group, and includes acrylic acid, methacrylic acid, itaconic acid, and maleic anhydride. , Hydroxypropyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, N-tbutyl acrylamide, diacetone acrylamide, glycidyl acrylate, and the like. These can be balanced in tackiness, adhesion and cohesion by copolymerizing them. Crosslinking Used as an ingredient. This monoethylenically unsaturated and polarity When the amount of the copolymerizable monomer is less than 1% by weight, the effect in the above balance is not sufficient, and when the amount is more than 20% by weight, the tackiness and the adhesiveness tend to be reduced.
[0064]
Copolymerizable vinyl compounds include acrylonitrile, methacrylonitrile, derivatives of acrylic acid and methacrylic acid, vinyl acetate, maleic anhydride, styrene, vinyl propionate, dibutyl maleate, dibutyl itaconate, etc. It is introduced for the purpose and can be used in a proportion of 30% by weight or less.
[0065]
Further, a tackifier is added as needed. As the tackifier, rosin or rosin derivative resin (including modified rosin resin), phenol resin or alkylphenol resin, petroleum resin, alkylphenol / acetylene resin, terpene / phenol resin, terpene resin, cumarone / indene resin , Xylene resin or the like, and has a softening point of 35 ° C. or more, preferably 40 ° C. or more, particularly preferably 45 ° C. or more in order to prevent a decrease in heat resistance. Preferred are rosin derivative resins, phenol resins, and xylene resins. When the addition amount of the tackifier is large, it becomes rather hard and lowers the initial tack. Therefore, 1 to 40 parts by weight, preferably 2 to 35 parts by weight, particularly preferably 3 to 30 parts by weight, per 100 parts by weight of the acrylic polymer. Parts by weight. If the addition amount is 1 part by weight or less, adhesiveness or tackiness cannot be obtained, and if it exceeds 40 parts by weight, adhesiveness or tackiness cannot be obtained.
[0066]
Crosslinking is also possible to improve heat resistance, glue protrusion and cohesion. Methods using polyfunctional isocyanates, methods using melamine crosslinking, methods using glycidyl acrylate and amine, methods using internal crosslinking agents, etc. Either method can be used as long as a balance is made between tackiness, adhesion, and heat resistance. The amount of the crosslinking agent to be added is 0.1 to 10 parts by weight, preferably 0.2 to 8 parts by weight, particularly preferably 0.5 to 6 parts by weight based on 100 parts by weight of the acrylic polymer. If the amount is less than 0.1 part by weight, there is no effect of addition and the cost increases. If the amount exceeds 10 parts by weight, the effect of increasing the amount does not increase and only the material cost increases. The amount of the pressure-sensitive adhesive applied may be 10 g or more per square meter in order to obtain sufficient adhesiveness. If it is 40 g or more, adverse effects such as sticking out of the adhesive are likely to occur. .
[0067]
(Release paper)
The paper used for the release paper 11 is kraft paper, glassine paper, vertiment paper, or the like. In the case of kraft paper, polyethylene, PVA, CMC, or the like is used as an anchor coat. On the other hand, glassine paper and vertiment paper can be directly silicone-treated because they have good smoothness and low permeability.
[0068]
Silicone has a siloxane-bonded Si-O skeleton, and an organic group (mainly a methyl group phenyl group) is bonded to all or a part of silicon atoms. The silicone for release paper must have conditions such as having excellent release properties, not migrating to the pressure-sensitive adhesive layer, not falling off the release paper, or being easily rubbed off. Therefore, it is necessary to provide a soft elastic coating obtained by partially cross-linking a linear polymer siloxane, and cross-linking by dehydrogenation between Si-OH of a linear dimethylpolysiloxane end group and Si-H of methylhydrogensiloxane. Reaction products have become mainstream.
[0069]
Silicones include a solvent type, an emulsion type and a solventless type. In the solvent type, the above silicone is diluted 5 to 15 times with an organic solvent such as toluene, xylol, and normal hexane, and a necessary amount of a catalyst, a drop-preventing agent, acetic acid, and the like are mixed therein, and the mixture is coated on paper or plastic film. . As the catalyst, a lead salt or a zinc salt of a higher fatty acid is mainly used. The drop-off preventing agent is used to prevent a phenomenon in which silicone rubs off from the base material when it is rubbed with a fingertip, and an organic silicon compound containing an amino group or an alkoxy group is often used. Acetic acid is added to suppress the reaction of Si—H and extend the pot life of the coating solution. Similarly, the emulsion type silicone is diluted 5 to 10 times with water, and a required amount of a catalyst, acetic acid, or the like is mixed to prepare a coating solution, which is then applied to a substrate. CMC or poval may be added for the purpose of thickening the coating liquid. The solventless silicone does not use these solvents, and uses a platinum catalyst or the like and cures at 180 to 200 ° C. in about 15 seconds.
[0070]
(Printing layer)
In label production, the bar code 13 is generally printed by a letterpress method, offset method, screen method, or foil stamping. Among them, the screen method and the foil stamping method are used for small-lot printing labels because the ink thickness is thick, the weather resistance is excellent, and the solid printed part has a good finished appearance, but the production (printing) speed is slow and the cost is high. Often done. On the other hand, the letterpress method and offset method are suitable for mass production because the production (printing) speed is high and the productivity is good, and the barcode label 12 for photographic film cartridges to be mass-produced is printed by letterpress method and offset method. It is desirable to do. However, in both of these printing methods, the concealing property is low due to the small thickness of the ink, so that the reflective layer may not be concealed sufficiently. Therefore, in order to use these printing methods for the barcode label 12 for photographic film cartridges, it is preferable to increase the ink density and to make the black ink matte for the purpose of improving the concealment.
[0071]
The bar code label 12 for photographic film cartridges is often printed on a plastic film such as polystyrene, so the penetrating ink used for paper printing is not used, and the oxidative polymerization dried ink and the UV curable ink are mainly used. Is done. For both the letterpress printing ink and the offset printing ink, inks having the following compositions are used.
[0072]
The composition of the oxidative polymerization dry ink is as follows.
▲ 1 ▼ Binder
Dried oil: linseed oil, tung oil, etc.
Resin: rosin-modified phenol, alkyd resin, etc.
(2) Petroleum solvent
(3) Pigment (carbon black)
(4) Dryer (catalyst): Fatty acid salts of cobalt, naphthenate salts, borates of lead and manganese, etc. without drying promotion action
[0073]
The composition of the UV-curable ink is as follows.
▲ 1 ▼ Binder
Polymerization reactive resin (oligomer or prepolymer): acrylate, epoxy acrylate, urethane acrylate, polyester acrylate, etc.
Photopolymerizable monomer: Used as a reactive diluent, monoacrylate, diacrylate, triacrylate, etc.
(2) Photopolymerization initiator or sensitizer: benzophenone ethers, benzophenone, etc.
(3) Pigment (carbon black)
(4) Auxiliaries and additives: wax, filler, etc.
[0074]
In the above embodiment, the edge position is detected by the light emitting / receiving elements 63a to 63e to detect the position shift of the label 12, but in addition, the TV camera may be used to detect the position shift of the label. It may be. In this case, the label 12 is imaged by a television camera, and the edge position of the imaged label 12 is extracted by well-known image processing to detect whether or not the position of the label 12 is shifted. In addition to the edge extraction, the center of gravity of the label 12 may be detected by image processing, and the displacement of the label 12 may be detected from the displacement of the center of gravity. Further, the edge of the barcode pattern may be extracted, and the displacement of the label may be detected based on the extracted edge.
[0075]
Further, in the above-described embodiment, the air cylinder 121 provided with the removing plate 120 at the tip of the rod is used as the label removing unit 64. However, instead of the air cylinder 121, a hydraulic cylinder, an electromagnetic solenoid, a motor, or the like is used. 120 may be moved.
[0076]
Further, in the above embodiment, the spool shaft 15 with the label 12 attached thereto is discharged to the finished product tray 34 by the spool shaft discharger 31. In addition, the label is attached to the pallet using a robot hand. The spool shafts may be arranged and stored. Further, the spool shaft to which the label has been attached may be directly supplied to the production line of the photographic film cartridge. In this case, since the unlabeled spool shaft is discharged in the discharging process, other cartridge components such as the upper and lower cases, the spool lock, and the lid member are supplied to the assembled pallet corresponding to the portion where the spool shaft is missing. Control the production line to avoid unnecessary assembly.
[0077]
In addition, the number of stations of the attached body feeding device 24 is increased, a TV camera is installed at a station in front of the discharge station, and image data from the camera is subjected to image processing, and a final check of the presence or absence of a label and a label position is performed. It may be performed. Furthermore, the edge of the barcode pattern may be extracted, and the type of the barcode may be checked.
[0078]
Further, in the above embodiment, as shown in FIG. 8, the spool shaft 15 on which the label-free suction pad 51 is located is tracked and discharged at the defective product discharge position. If the spool shaft 15 has not been set on the holding table 25 on which the label-free suction pad 51 is to be located, the spool 25 is sent to the holding table 25 of the feeding device 24 for sending the spool shaft 15 to the attaching position. By not setting the shaft 15, the generation of the spool shaft 15 without a label may be prevented. In this case, it is possible to save the trouble of tracking the spool shaft 15 without a label and discharging the spool shaft at the defective product discharge position.
[0079]
In the above embodiment, a suction drum 50 having suction pads 51 equal to or more than the number of work stations at the same pitch in the circumferential direction is provided, and the suction drum 50 is intermittently fed to position each suction pad 50 at each station. In each of the stations S1 to S6, processes such as label sending, label position correction, label position deviation detection, label removal, label detection, label pressing down, etc. are performed simultaneously, so that there is no waiting time between the steps, and a series of label sticking operations. Work can be performed at high speed.
[0080]
Further, in the above embodiment, the suction pad 51 is attached to the pad body 59, the holding portion for holding the pad body 59 movably in the radiation direction of the suction drum 50, and the pad body 59 facing the center of the suction drum 50. And the pad pushing section 66 is constituted by the cam 55 which pushes the holding section so as to press the suction pad 51 toward the spool shaft 15, so that the label 12 is sucked by the pad body 59. The label 12 can be attached to the spool shaft 15 by pressing down the pad body 59 while maintaining the above condition. Therefore, the position of the label 12 does not shift, and the label 12 is applied in a state where the position of the label 12 is corrected by the position correcting unit 62 of the label 12. Can be improved. In addition, since the rotation is performed while the rotation of the suction drum 50 is stopped, the positioning accuracy of the label 12 can be further improved.
[0081]
Further, in the above embodiment, the label 12 is formed in an annular shape, and an arc-shaped notch 12a is formed in a part of the periphery thereof, and the label 12 is attached to the leading end side of the release paper 11 in the feeding direction. The label 12 can be easily peeled off from the release paper 11 because the opposite side of the arc-shaped notch 12a is positioned and the release paper 11 is arranged in a line in the release paper feed direction at a predetermined pitch. That is, since the number of peeling start points is one, and the corner portion does not become the peeling start point, the label 12 can be easily peeled.
[0082]
In the above-described embodiment, the label position correcting unit 62 includes the centering pin 80 inserted into the center hole 12 b of the label 12 to center the label 12, and the two rotating pins inserted into the notch 12 a of the label 12. Since the position correction pins 81 and 82 and the opening and closing means of the position correction pins for moving the two rotation position correction pins 81 and 82 toward and away from each other, the center of the label 12 and the centered state are maintained. It is possible to perform positioning in the rotation direction while doing so. Moreover, the rotational position of the label 12 is corrected by opening the two position correcting pins 81 and 82 so as to separate the position correcting pins 81 and 82 against the edge of the notch 12a and rotating the label 12. Thus, by setting the opening and closing angles of the correction pins 81 and 82 arbitrarily, an accurate correction range can be obtained. When the rotational position is corrected, the centering of the label 12 is completed by the centering pin 80, and the rotational position is corrected in a state where the label 12 is centered. Therefore, the central position of the label 12 is shifted by the correction of the rotational position. There is no end. Further, by replacing the centering pin 80 with a different diameter, the correction range of the position of the label 12 can be freely selected.
[0083]
【The invention's effect】
According to the present invention, since the label displacement detecting means for detecting the displacement of the label of the suction pad and the label removing means for removing the label whose displacement has been detected by the label displacement detecting means are provided, There is no displacement of the label and no sticking of the label to the body to be adhered, and no defective label displacement. Thus, when used again as a component, the label can be easily reused without the trouble of peeling off the label of the defective label position product.
[0084]
In addition, a label detection unit that detects the presence or absence of a label on the suction pad is provided, and the adherend without the label is tracked at the position where the suction pad without the label is extruded. Since the sheet is discharged when it arrives, the adherend without a label is not assembled as a part. Therefore, reuse of the adherend is facilitated.
[0085]
In addition, since the label is formed in an annular shape and an arc-shaped notch is formed in a part of the peripheral edge, by detecting the edge of this arc-shaped notch, if there is only displacement of the label in the vertical and horizontal directions. In addition, it is possible to detect a positional deviation in the circumferential direction. Thereby, when the barcode is recorded on the label in the circumferential direction, the recording position of the barcode is accurately maintained.
[Brief description of the drawings]
FIG. 1 is a front view showing a main part of a label sticking apparatus embodying the present invention.
FIG. 2 is a plan view showing an example of a label mount used in the label sticking apparatus.
FIG. 3 is an enlarged sectional view showing a layer structure of the label mount.
FIG. 4 is a perspective view showing an example of a label.
FIG. 5 is a plan view showing an example of another label mount.
FIG. 6 is a plan view illustrating a direction in which a label is attached to release paper.
FIG. 7 is a front view showing the entire label attaching device.
FIG. 8 is a plan view showing a work feeding device and a spool shaft discharge unit.
FIG. 9 is an enlarged sectional view of a main part showing the suction pad.
FIG. 10 is an exploded perspective view showing the position correction head.
FIG. 11 is an explanatory diagram showing a positional relationship between a label at a regular position and a light emitting / receiving element.
FIG. 12 is an explanatory diagram showing a positional relationship between a label shifted from a normal position and a light emitting / receiving element.
FIG. 13 is a flowchart illustrating a procedure for attaching a label.
FIG. 14 is a flowchart showing a procedure for feeding a spool of the spool feeding device.
[Explanation of symbols]
10. Label mount
11 Release paper
12 labels
12a notch
13 Barcode
14 Adhesive layer
15 Spool shaft
15a disk
45 Peeling Edge
50 suction drum
51 Suction pad
55 cams
59 pad body
62 Label position correction unit
63 Label displacement detection unit
63a-63e light emitting / receiving element
64 Label remover
65 Label detector
66 Pad push-out section
80 Centering pin
81,82 Position correction pin
95 Position Correction Head
120 Removal plate

Claims (2)

In a label sticking device that sticks and holds a label with a suction pad and sticks a label to a body to be stuck with the suction pad,
A suction drum provided with a plurality of the suction pads at the same pitch in the circumferential direction,
Means for intermittently feeding the suction drum at a pitch of one suction pad;
A label sending means provided at a station where the suction pad is stopped by intermittent feeding, and a label is sent to the suction pad stopped at this station;
Position correction means provided at a station downstream of the label sending means, for correcting the label position of the suction pad,
A label displacement detecting means provided at a station downstream of the position correcting means and detecting a displacement of the label of the suction pad stopped at the station;
Label removal means provided at a station downstream of the label displacement detection means, for removing a label whose displacement has been detected by the label displacement detection means ,
Label detection means provided at a station downstream of the label removal means, for detecting the presence or absence of a label on the suction pad,
Suction pad pushing means provided at a station downstream of the label detection means , extruding the suction pad stopped at this station toward the adherend, and attaching the label to the adherend,
Defective product discharging means for tracking the adherend at a position where the suction pad from which no label is detected by the label detecting means is extruded, and discharging the adherent when it is sent to the defective product discharging position. And a label attaching device. 2. The label sticking apparatus according to claim 1, wherein a bar code label which is formed in an annular shape, has an arc-shaped notch in a part of a peripheral edge, and has a fan-shaped bar long in a radial direction arranged in a circumferential direction is used as the label. A label sticking apparatus, wherein a disk plate of a spool shaft of a photographic film cartridge is used as a body to be stuck.

Images