JP2005075447A - Labeling apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a labeling apparatus with which deviation between a required labeling position and an actual labeled position and variation of the deviation are minimized so that the labeling can be performed accurately when a label is stuck on a transferred article while the article is continuously sent out to transfer. <P>SOLUTION: When the label is stuck on the transferred article continuously sent out to transfer, the required labeling position of a label is detected and based on the detected result, positioning of the label in the transferring direction is performed and the label is stuck on the transferred article while the apparatus runs synchronizing with a transferring speed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a label affixing device and a label affixing method for affixing a label such as a tape to a conveyed product such as a sheet, a web, or a plate-like material that is continuously fed and conveyed.

  Conventionally, when a label is pasted on an object being transported, the operation speed of the object to be pasted, the variation in the timing of the pasting signal output due to software processing, the time the solenoid valve actually operates after receiving the pasting signal Due to variations in time or the like, labels could not be applied with high accuracy at positions where labeling was actually required, and variations occurred within a range of several mm to several tens of mm. This level of variation is less likely to be a problem when a mark for switching lots such as sheets or webs or a product name label is affixed. When attaching a label for repairing a product defect such as a pinhole, there is a problem that the range in which the positional deviation can be tolerated is few mm or less, which is a problem. For this reason, a label for indicating the position of a product defect or a label for repairing a product defect such as a pinhole is currently applied manually at a constant low conveyance speed. For this reason, there was a problem that production efficiency and work efficiency were not good. Moreover, since work is performed manually, there is room for improvement in terms of quality, cost, and safety.

  Also, when printing identification numbers and barcodes on the plate material end face on the conveyor, which requires accuracy of mm order and sub mm order, the end position of the plate material is detected, and the print head based on the detection result Is proposed, and necessary information is printed on the end face of the plate (Patent Document 1). Furthermore, in order to automate the tag attachment work for PR campaigns etc. on the beverage barrel, the barrel tag attachment position is detected, and the barrel position is adjusted so that the tag can be attached based on this detection signal. An apparatus for attaching a tag has also been proposed (Patent Document 2).

However, the method described in Patent Document 1 stops the transported plate material at a predetermined position when printing the identification number or the like on the end surface of the plate material on the conveyor. When the tag attachment to the previously transported barrel is not completed, the transport of the later transported barrel is temporarily stopped and waited. In other words, both are methods of printing or attaching tags to things that can be stopped when viewed individually, such as plate materials and barrels, which are continuously sent out and transported, even when a label is attached. There is a method that cannot be applied to things that cannot be stopped individually.
JP-A-8-243455 JP 2003-11934 A

  The present invention relates to an error between a position where labeling is required and a position where a label is actually pasted, and its error when affixing a label to a transported object that is being sent out and transported continuously. It is an object of the present invention to provide an apparatus and a method capable of reducing error variation and attaching a label with high accuracy.

In order to solve the above problems, the present invention has the following configuration.
(1) A label affixing device that affixes a label to a conveyed product that is continuously sent out and conveyed, and a detection unit that detects a label affixing position, and a label affixing position detected by the detection unit A label affixing device comprising: a label affixing unit that affixes a label; and a control device that causes the label affixing unit to travel in a conveyance direction in synchronization with a conveyance speed of the conveyed object when the label is affixed.
(2) A label affixing device that affixes a label to a conveyed product that is continuously sent out and conveyed, and a detection unit that detects a label affixing position, and a label affixing position detected by the detection unit A label affixing unit for affixing a label, a detection result by the detection unit is converted into coordinate data, and the position of the label affixing unit is adjusted based on the coordinate data and the conveyance speed of the conveyed object A label affixing device, comprising: a control device for causing the label affixing means to travel in the conveyance direction in synchronization with a conveyance speed of the conveyed product at the time of label affixing.
(3) The label affixing method according to (1) or (2) above, wherein the label affixing means affixes the label to the transported object by blowing air onto the label. apparatus.
(4) A label affixing device for affixing a label to a conveyed product that is continuously sent out and conveyed, and a detection unit that detects a label affixing position, and a label affixing position detected by the detection unit A label affixing device comprising: a label affixing unit that affixes a label; and a control device that sends out the label from the wound body in synchronization with a conveyance speed of the conveyed product.
(5) A label affixing device for affixing a label to a conveyed product that is continuously sent out and conveyed, the detecting means for detecting the label affixing position, and the label affixing position detected by the detecting means A label affixing unit for affixing a label, and converting a detection result by the detection unit into coordinate data, and performing alignment with respect to the conveyance direction of the label affixing unit from the coordinate data and the conveyance speed of the conveyed object A label affixing device comprising: a control device that sends out a label from a wound body in synchronization with a conveyance speed of a conveyed product.
(6) The detection means detects a position of a defect of the conveyed product, and the label attaching means attaches a label for repairing the defect to the conveyed object. The label affixing device according to any one of (1) to (5) above.
(7) A separation membrane forming apparatus comprising the label attaching device according to any one of (1) to (6).
(8) When affixing a label to a conveyed product that has been continuously sent out and conveyed, the label affixing position is detected, and the position of the label in the conveyance direction is adjusted based on the detection result. A label attaching method, wherein the label is attached to the transported object in a state of running in synchronization with a transport speed.
(9) When a label is affixed to a transported object that is continuously sent out and transported, the label pasting position is detected, the detection result is converted into coordinate data, and the coordinate data and the transported object A label affixing method characterized in that the position of the label in the conveyance direction is adjusted based on the conveyance speed, and the label is affixed to the conveyance object in a state of running in synchronization with the conveyance speed.
(10) The label affixing method according to (8) or (9) above, wherein the label is affixed to the transported object by blowing air onto the label.
(11) When a label is affixed to a transported object that is continuously fed out and transported, the label affixing position is detected, and the position of the label in the transport direction is adjusted based on the detection result. The label attaching method, wherein the label is sent out from the wound body in synchronization with a conveying speed and is affixed to the conveyed object.
(12) When a label is affixed to a transported object that is continuously sent out and transported, the label affixing position is detected, the detection result is converted into coordinate data, and the coordinate data and the transported object A label affixing method characterized in that the position of the label in the conveyance direction is adjusted based on the conveyance speed, and the label is sent out from the wound body in synchronization with the conveyance speed and affixed to the conveyance object.
(13) Affixing the label according to any one of (8) to (12) above, wherein the position of the defect of the conveyed product is detected, and a label is attached to the conveyed object in order to repair the defect. Method.
(14) A method for producing a separation membrane, wherein the method according to any one of (8) to (13) is used.

  According to the present invention, since the label is affixed to the transported object in a state where the label is run in synchronization with the transport speed of the transported object, the error between the position where labeling is required and the position where the label is actually pasted and The variation in the error can be suppressed, and the label can be attached with high accuracy. And when using the present invention for defect detection / repair at the time of separation membrane formation, production efficiency and work efficiency can be improved, and work is not required to be done manually, so quality, cost and safety are also improved. It becomes possible to do.

  An embodiment of the label attaching apparatus of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an apparatus according to the present invention. A pinhole of a separation membrane sheet for water treatment (conveyed material) that is continuously sent out and conveyed is detected by a defect detector, and the detected pinhole is detected. The structure of the apparatus which affixes a label is shown.

  In FIG. 1, 1 is a defect detector, 2 is a length measuring device, 3 is a labeler, 4 is a label attaching head (label attaching means), 5 is a Y axis for performing alignment in the transport direction of the label attaching head, 6 is an X-axis for alignment in the direction intersecting the conveyance direction of the labeling head, 7 is a separation membrane sheet for water treatment (conveyed material), 16 is for calculating the conveyance speed of the conveyed material 7 or labeling 2 shows a control device that issues an operation signal to the attachment head 4.

  Here, the defect detector 1 for detecting the pinhole, that is, the detecting means for detecting the label attaching position is opposed to the line CCD sensor 10 and the line CCD sensor 10 across the conveyed object as shown in FIG. The light source 11 and the signal processing device 12 for processing the video signal of the line CCD sensor 10 are arranged, and the line CCD sensor 10 detects increase / decrease in the amount of light due to the pinhole. The signal processing device 12 compares the detection signal of the line CCD sensor 10 with the reference signal to determine whether or not it is a defect, and immediately controls the timing when it is determined to be a defect. A defect generation timing output board 14 to be output to the apparatus 16 and a defect data management personal computer 15 to record and store the position in the direction intersecting the defect conveyance direction as an X coordinate and to output to the control apparatus 16 are provided.

  The number and resolution of the line CCD sensors 10 may be determined from the width of the conveyed product and the size of the defect that needs to be repaired to satisfy the product performance.

  The length measuring device 2 generates and outputs a pulse signal to the control device 16 in accordance with the number of rotations of the driving roll that supports and conveys the conveyance object. The speed of the conveyance object is determined from this pulse signal. While calculating, the defect position (Y coordinate) in a conveyance direction, the movement distance of the defect, etc. are calculated. As the length measuring device 2, a commercially available general encoder, a pulse generator attached to a transport motor, or the like can be used.

  As shown in FIG. 3, the control device 16 is composed of a sequence CPU 17 capable of high-speed data processing, a motion control CPU 18 and the like. The control device 16 calculates the conveyance speed of the conveyed object from the pulse signal of the length measuring device 2, and The position in the conveyance direction of the defect is calculated as a Y coordinate from the conveyance speed of the conveyed product and the defect occurrence timing signal sent from the defect detector 1, and the X coordinate is accepted, and an alignment command to the labeling head 4 and an acceleration start command The travel speed command and the paste command are output.

  The labeler 3 may be a device that cuts out labels that are continuously arranged on the mount one by one, or a device that cuts out a tape by a specified length with a cutter. The optimum label size, shape, material, and adhesive material may be selected from the required specifications of the object.

  The label attaching head 4 adsorbs a label cut out from the labeler 3, receives a signal from the control device 16, travels along with the conveyed object, and attaches a label to a defect position. 9, a linear guide constituting the X axis 5 and the Y axis 6 for the label gripping head 9 to travel, and a ball screw for feeding the label gripping head 9 along the linear guide in the X axis 6 and Y axis 5 directions And a servo motor that rotates the ball screw. The servo sticker is driven and controlled by the control device 16 so that the label attaching head 4 runs and aligns.

  As shown in FIG. 2 (A), the label gripping head 9 has an air circuit 9a having a suction solenoid valve and a spraying solenoid valve, and an air chamber 9b of about 10 cc, and operates the suction solenoid valve. If it does, the air chamber 9b will be in an attraction | suction state by an ejector effect, and if the electromagnetic valve for spraying is operated, air will be blown out from the air chamber 9b. As shown in FIG. 2 (B), the air chamber 9b is provided with seven round holes (φ2 mm) arranged in a staggered manner on the surface to be conveyed, and the label is sucked and sprayed through the round holes. To do.

  Further, the label gripping head 9 is attached to the tip of the elevating cylinder so as to be positioned at a height of 30 mm from the conveyed product when receiving the label and at a height of 2 to 5 mm from the conveyed product at the time of spraying. In order to attach the label with high accuracy without bringing the label attaching head into contact with the separation membrane that is slightly bent during conveyance, and to obtain sufficient adhesion, the surface of the air chamber 9b facing the object to be conveyed is labeled. At the time of pasting, it is preferable to be positioned at a height of 2 to 5 mm from the conveyed product.

  The label affixing head 4 may employ a contact pressing type affixing head. However, when there is a possibility that the contact surface may be damaged due to contact of the affixing head such as a separation membrane, Thus, a non-contact method of applying a label by blowing air on the label is preferable.

  In the apparatus of the present invention described above, the pinhole defect of the water treatment separation membrane sheet (conveyed material 7) being conveyed is automatically detected by the defect detector 1, and the pinhole is detected based on the coordinates of the detection result. A label for closing is attached to the separation membrane sheet for water treatment.

  Conveyance of the separation membrane sheet for water treatment is continuously performed by roll driving by another control device (not shown).

  When detecting defects, the light source 11 is irradiated with light from the water treatment separation membrane sheet (conveyed material 7) being conveyed, and the light source 11 and the water treatment separation membrane sheet (conveyed material 7) are opposed to each other. The line CCD sensor 10 provided in the apparatus detects an increase or decrease in the amount of light transmitted through the water treatment separation membrane sheet, and sends a detection signal (video signal) to the signal processing device 12.

  In the signal processing device 12, the video signal processing board determines whether or not the increase / decrease in the amount of light is a defect, and if it is determined to be a defect, the defect occurrence timing output board 14 controls the timing in real time. Output to the device 16. Since it is necessary to output the defect occurrence timing in real time, it is a hardware process that does not involve a software process such as a personal computer. On the other hand, the position in the direction crossing the defect conveyance direction is converted into coordinate data from the reference point, recorded and stored in the defect data management personal computer 15 as the X coordinate, and output to the control device 16. This is output from a personal computer because the delay caused by the arithmetic processing is not affected.

  Then, the control device 16 calculates the transport speed of the transported object based on the pulse signal that is always input from the length measuring device 2, and from the transport speed of the transported object and the defect occurrence timing signal from the signal processing device 12. The position of the defect in the conveyance direction is calculated as the Y coordinate. The defect coordinates at the position of the label attaching head 4 are calculated from the Y coordinate and the X coordinate sent from the signal processing device 12 and the assumed acceleration of the label gripping head 9, and the label gripping head 9 transports the transported object. The traveling speed, the acceleration start timing, and the air blowing timing are calculated so that the label can be attached to the defect while traveling in synchronization with the speed.

  Then, when a label sticking command is transmitted to the label gripping head 9 under the control of the control device 16, the label gripping head 9 sucks and receives the label fed by the labeler at a height of 30 mm from the conveyed product, and the sucked state Then, the alignment in the X-axis 6 direction is performed, the height is lowered to 2 to 5 mm from the conveyed product, air is blown onto the label, and the label is attached to the conveyed product.

  FIG. 4 shows an overall flow of the above-described operation, and FIG. 5 shows a detailed flow of the defect coordinate capturing process 31 in FIG.

  When the defect detector 1 detects the defect (30), the defect detector 1 outputs a defect occurrence timing signal from the defect occurrence timing output board 14 in order to extract the defect occurrence timing as a Y coordinate, and the signal is input to the sequence CPU 17 of the control device 16. (39). Then, the sequence CPU 17 reads the coordinates of the defect occurrence timing on the virtual reference axis (40) and writes them in the data table as Y coordinates (41). At the same time, the position in the direction crossing the defect conveyance direction is output from the defect data management personal computer 15 as the X coordinate, and the coordinate is also input to the sequence CPU 17 (43), and the X coordinate is written in the data table (44).

  Then, in the labeling operation, the control device 16 takes out the first data and the next data in the data table (45), and if there are neighboring coordinates within the designated range, takes the intermediate coordinates of the two coordinate data, and uses them. The connection process which makes 1 fault is performed (46, 47). Further, if the pasting head is in operation with respect to the previous coordinate, the operation with respect to the subsequent coordinate cannot be performed immediately, so it is determined whether the operation is possible (48). If the pasting operation cannot be performed, a series of operations including sheet conveyance are temporarily stopped as an emergency, and the process waits until the pasting operation becomes possible (51). If the pasting operation is possible, a label feeding command is output to the labeler, the labeler feeds the label, and the label gripping head sucks the label (49). Next, the label gripping head moves to the X coordinate of the pasting coordinates (50), waits for the acceleration start timing in the Y-axis direction (52), and starts acceleration of the label gripping head when the acceleration start timing comes. (53, 54) The acceleration start timing is obtained by calculation so that the center of the label is directly above the defect when the acceleration in the Y-axis direction is finished and the speed of the label gripping head is synchronized with the transport speed of the transported object. It is done. Then, when the speed of the label gripping head in the Y-axis direction is synchronized with the transport speed of the transported object (55), a label attaching operation is performed, and air is blown for a predetermined time while the speed is synchronized (56). Thereafter, the label gripping head stops traveling in the Y-axis direction (57), calculates the return amount from the amount of movement so far to the standby position (58), and returns to the standby position for both the XY axes (59).

  In this embodiment, the case where the defect is detected and repaired has been described. However, when the defect is not repaired but a label is simply attached to the marking position, a photoelectric sensor or the like is used instead of the defect detector 1. May be used.

  In the present embodiment, the label is applied in a state where the label gripping head 9 travels along the Y axis 5. However, the label is aligned with the label delivery timing from the labeler 3, and the delivery speed is conveyed. The label may be directly attached to the transported object by synchronizing with the speed of the object.

  With the apparatus shown in FIG. 1, a pinhole was detected in a separation membrane sheet for water treatment (conveyed material 7) having a width of 1 m that was continuously conveyed, and a test for attaching a label to the pinhole was performed. The label used was a circular shape with a diameter of 25 mm and with glue, the defect detection size was 300 μm or more, and the transport speed of the separation membrane sheet for water treatment was three steps of 10, 20, and 40 m / min. As a result, the repair tape is applied with an accuracy of ± 0.5 mm or less in the X direction and ± 1.5 mm or less in the Y direction for any misalignment of the center of the repair label for defects, at any speed and even during sheet acceleration / deceleration. I was able to.

  The present invention is suitably used when a label such as an adhesive seal is applied to a sheet or plate that is continuously conveyed, such as a film, a separation membrane, or a nonwoven fabric. It is suitably used in marking and repairing defects such as easily damaged membranes.

It is a schematic block diagram of the label sticking apparatus which shows one embodiment of this invention. It is a schematic block diagram of the label holding head 9 in FIG. It is a block diagram which shows the flow of the signal of the fault detector 1 and the control apparatus 16 in FIG. It is a flowchart which shows the whole flow of the label sticking apparatus which concerns on this invention. It is a flowchart explaining 1 operation | movement of the label sticking apparatus which concerns on this invention.

Explanation of symbols

1: Defect detector (detection means)
2: Length measuring device 3: Labeler 4: Label attaching head 5: Y axis 6: X axis 7: Conveyed object 9: Label gripping head 10: Line CCD sensor 11: Light source 12: Signal processing device 13: Video signal processing board 14: Defect occurrence timing output board 15: Defect data management personal computer 16: Control device

Claims (14)

  A label affixing device for affixing a label to a transported object that is continuously sent out and conveyed, the detection unit detecting a label affixing position, and a label affixing the label affixing position detected by the detection unit A label affixing device comprising: a label affixing unit to be attached; and a control device that causes the label affixing unit to travel in a conveyance direction in synchronization with a conveyance speed of the conveyed product when labeling.   A label affixing device for affixing a label to a transported object that is continuously sent out and conveyed, the detection unit detecting a label affixing position, and a label affixing the label affixing position detected by the detection unit A label affixing unit to be attached; and a detection result by the detection unit is converted into coordinate data, and the position of the label affixing unit is adjusted based on the coordinate data and the conveyance speed of the conveyed object, and the label affixing is performed And a control device that causes the means to travel in the transport direction in synchronization with the transport speed of the transported object when labeling is performed.   The label affixing device according to claim 1 or 2, wherein the label affixing unit affixes the label to the transported object by blowing air onto the label.   A label affixing device for affixing a label to a transported object that is continuously sent out and conveyed, the detection unit detecting a label affixing position, and a label affixing the label affixing position detected by the detection unit A label affixing device comprising: a label affixing unit to be affixed; and a control device for sending out a label from a wound body in synchronization with a conveyance speed of the conveyed product.   A label affixing device for affixing a label to a transported object that is continuously sent out and conveyed, the detection unit detecting a label affixing position, and a label affixing the label affixing position detected by the detection unit A label affixing unit to be attached, and a detection result by the detection unit is converted into coordinate data, and the position of the label affixing unit is adjusted based on the coordinate data and the conveyance speed of the conveyance object, and the conveyance object And a control device that sends out the label from the wound body in synchronization with the conveyance speed.   The detection means is for detecting a position of a defect of the conveyed product, and the label attaching means is for attaching a label for repairing the defect to the conveyed object. Item 6. The label affixing device according to any one of Items 1 to 5.   A separation membrane production apparatus comprising the label application device according to claim 1.   When a label is affixed to a transported object that is continuously fed and transported, the label affixing position is detected, the position of the label in the transport direction is adjusted based on the detection result, and the label Is attached to the transported object in a state of traveling in synchronization with the transport speed.   When a label is affixed to a transported object that is continuously sent and transported, the label attaching position is detected, the detection result is converted into coordinate data, and the coordinate data and the transport speed of the transported object are A label affixing method characterized by aligning the position of the label in the conveyance direction and affixing the label to the conveyance object in a state of running in synchronization with a conveyance speed.   The label attaching method according to claim 8 or 9, wherein the label is attached to the transported object by blowing air onto the label.   When a label is affixed to a transported object that is continuously fed and transported, the label affixing position is detected, the position of the label in the transport direction is adjusted based on the detection result, and the label A label attaching method, wherein the sheet is sent out from a wound body in synchronization with a conveying speed and is affixed to the conveyed object.   When a label is affixed to a transported object that is continuously sent and transported, the label attaching position is detected, the detection result is converted into coordinate data, and the coordinate data and the transport speed of the transported object are A label affixing method characterized in that the position of the label in the conveyance direction is adjusted, the label is sent out from a wound body in synchronization with a conveyance speed, and affixed to the conveyance object.   The label sticking method according to any one of claims 8 to 12, wherein a position of a defect of the transported object is detected, and a label is attached to the transported object in order to repair the defect.   A method for producing a separation membrane, comprising using the method according to claim 8.

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