JP2007045423A - Label feed system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label feed system capable of easily specifying a cause of an error of cutting a label substrate. <P>SOLUTION: The label feed system comprises a label substrate conveying device 3 for feeding a label substrate S, a label generation device 4 for generating a plurality of labels L by repeatedly cutting the fed label substrate at predetermined periods, a mark sensor 26 which is provided in the middle of a feed passage by a label substrate feed means to detect the mark of the label substrate, an operation setting device for setting a reference distance from the mark to the mark sensor when the label substrate is cut in the label substrate by the label generation device, and a control device for measuring a distance to a position at which the label substrate is fed by the label substrate conveying device and the mark sensor detects the mark from the mark when cutting the label substrate. The control device compares the mark set by the operation setting device with the measured distance, and displays them on the operation setting device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a label supply system for supplying a long label base material, which is a generation source of a label to be mounted on the surface of a member to be mounted (for example, a container such as a PET bottle).

  FIG. 18 is a schematic diagram of a label mounting system to which a conventional label supply system is applied (see, for example, Patent Document 1).

Japanese Patent No. 3437077

  In this label mounting system, for example, a shrink label representing the name of a beverage or the like injected into the bottle is mounted on the surface of a PET bottle. The label mounting system includes a bottle supply device 91 for supplying a bottle B to a label mounting device 92, which will be described later, and a label mounting device 92 for mounting a label L on the bottle B supplied by the bottle supply device 91. A label base material transport device 93 that feeds out the long label base material S and supplies it to a label generation device to be described later, and a label (not shown) that cuts the long label base material S to generate a single label L A generation device, a label conveyance device (not shown) that conveys the label L generated by the label generation device while adsorbing the label L, a label delivery device 94 that receives the label L from the label conveyance device and delivers it to the label mounting device 92, It is mainly constituted by a bottle transport device 95 for transporting the bottle B to which the label L is attached to the downstream process. The label supply system includes a label base material transport device 93 and a label generation device.

  FIG. 18 is a plan view. In FIG. 18, the label base material S transported in the substantially horizontal direction by the label base material transport device 93 is transported to the label delivery device 94 from the direction perpendicular to the paper surface. It has a configuration. A folding device (not shown) is provided in the middle of the supply path through which the label base material S is supplied. This folding device is a sheet-like label base material fed out from the base material feeding part 96 (see FIG. 18) in order to make the label L cylindrical and easy to open when the label L is attached to the bottle B. By folding S, the folding position is changed.

  According to this label mounting system, the label base material S fed out by the label base material transport device 93 is cut by the label generation device and generated as a label L. The generated labels L are sequentially transported downward by the label transport device, and sequentially delivered to the label mounting device 92 by the label delivery device 94. The label L delivered to the label mounting device 92 is mounted on the bottle B supplied to the bottle supply device 91. The bottle B on which the label L is mounted is transported from the label mounting device 92 to the downstream process by the bottle transport device 95.

  In this label mounting system, the label L is generated by cutting the long label substrate S at a predetermined cycle. For example, as shown in FIG. The cutting position of the substrate S may be slightly shifted.

  FIG. 19A shows a case where the label base material S is cut at a regular position, and FIG. 19B shows a case where the cutting position of the label base material S is shifted. In detail, the label base material S is formed by alternately and continuously forming a design portion D representing the name of a beverage or the like and a clear portion CL provided between adjacent design portions D. The approximate center of the portion CL is set as a normal cutting position (see the dashed line in FIG. 19A). As shown in FIG. 19B, when the cutting position of the label base material S is shifted, when the cut label L is mounted on the bottle B, the design portion D is mounted with a shift from the regular position. As a result, a defective bottle with a misaligned label L may be generated.

  For this reason, in the conventional label mounting system, the displacement of the label L at the time of cutting is detected, and when the displacement of the label is detected, an error is output and the system is stopped. However, even when the system is stopped, the worker cannot specifically identify the cause of the label shift. When the system is stopped, the operator cleans the sensor for detecting the label shift or checks the conveyance path of the label base material S. In many cases, it was not related, and wasteful work was generated.

  The present invention has been conceived under the circumstances described above, and provides a label supply system that can easily identify the cause of an error when cutting a label substrate. Let that be the issue.

  In order to solve the above problems, the present invention takes the following technical means.

  The label supply system provided by the present invention includes a label base material supply means for supplying a label base material in which a plurality of labels are arranged in a line, and a label base material supplied by the label base material supply means. A label generating unit that generates a plurality of labels according to the above, a preset reference position in each label of the label base material provided in the middle of the supply path by the label base material supplying unit Detection means for detecting the label base material, setting means for setting a reference distance from the reference position to the detection means when the label base material is cut by the label generation means, and the label base material The label base material is supplied by the label base material supply means from the reference position when the material is cut, and the detection means detects the reference position. Measuring means for measuring the distance to the position, and a display control means for comparing the reference distance set by the setting means with the measured distance measured by the measuring means and displaying it on the display means. (Claim 1).

  According to this configuration, for example, when the label base material is cut by the label generation means, a distance between a preset reference position (for example, the position of the mark provided on the label base material) in each label and the detection means Is displayed. When the label base material is supplied by the label base material supply means and the reference position is detected by the detection means, the distance between the reference position when the label is cut and the detection position by the detection means is measured, and the reference position and Along with the distance to the detection means, the measured distance is displayed in comparison. As a result, at the distance between the reference position and the detection position, it is possible to grasp whether the label base material has been accurately transported to the predetermined position by the label base material supply means, that is, whether the cutting timing of the label base material is accurate. Judgment can be made. Therefore, the user can visually recognize the deviation of the cutting timing when the label base material is cut, and can easily identify the cause of the deviation of the cutting timing.

  Further, in the label supply system, the label base material supply means includes a pair of feed rollers that convey the label base material so as to sandwich the label base material, and pulse output means that outputs the rotation speed of the feed roller as a pulse. And the measuring means determines the reference position from the reference position at the time of cutting the label substrate based on a pulse representing the rotation speed of the feed roller output by the pulse output means. It is good to measure the distance to the position to detect (Claim 2).

  In the label supply system, the display control unit may display an allowable range centered on the reference distance and a deviation of the measurement distance with respect to the reference distance in the allowable range on the display unit ( Claim 3).

  In the label supply system, the display control unit may display the relationship between the reference distance and the measurement distance on the display unit in units of one label.

  In the label mounting system, the display control unit may display the relationship between the reference distance and the measurement distance on the display unit in a batch for a predetermined number of labels. .

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a schematic configuration of a label mounting system to which a label supply system according to the present invention is applied. FIG. 2 is a diagram illustrating a configuration of a label base material transport device 3, a label generation device 4, and a label transport device 5 to be described later.

  This label mounting system mounts a shrink label indicating the name of a soft drink or the like injected into the bottle, for example, on the surface of the PET bottle. The basic configuration of this label mounting system is to transport a large number of bottles B arranged in a line in a horizontal plane, while feeding a long label base material S on which a large number of labels L are printed at regular intervals. The label L is cut, the label L is sequentially transported to the transport path of the bottle B, and each label L is attached to each bottle B at a predetermined position on the transport path.

  Accordingly, as shown in FIGS. 1 and 2, the label mounting system includes a bottle supply device 1 for supplying a bottle B to a label mounting device 2 described later, and a bottle B supplied by the bottle supply device 1. From the label mounting device 2 for mounting the label L, the label base material transport device 3 for feeding out the long label base material S and transporting it to the label generating device 4 described later, and the label base material transport device 3 A label generating device 4 (see FIG. 2) that generates a label L by cutting the supplied long label substrate S, and transports the label L generated by the label generating device 4 downward while adsorbing the label L. The label transport device 5 (see FIG. 2), the label delivery device 6 that receives the label L from the label transport device 5 and delivers it to the label mounting device 2, and the bottle B with the label L mounted downstream. It is largely constituted by a bottle conveying apparatus 7 for conveying the extent.

  1 is a plan view, and in FIG. 1, the label base material S transported in a substantially horizontal direction by the label base material transport device 3 is transported to the label delivery device 6 from the direction perpendicular to the paper surface. It has a configuration (see FIG. 2). A folding device (not shown) is provided in the middle of the supply path through which the label base material S is supplied. This folding device is a sheet-like label base material fed out from the base material feeding portion 22 (see FIG. 1) in order to make the label L cylindrical and easy to open when the label L is attached to the bottle B. By folding S, the folding position is changed.

  The label supply system referred to in the present application includes a label base material transport device 3 and a label generation device 4. The label base material transport device 3 corresponds to a label base material supply unit, and the label generation device 4 corresponds to a label generation unit. is doing.

  The bottle supply device 1 conveys a plurality of hollow bottles B and supplies them to the label mounting device 2. The bottle supply device 1 includes a conveyor 11, a screw conveyor 12 (hereinafter simply referred to as “screw 12”), and a star wheel 13.

  The conveyor 11 is driven by a transport motor 64 described later, and the screw 12 is connected to and driven by a main shaft 16 described later, and transports a plurality of bottles B. Specifically, the conveyor 11 functions to transfer a large number of bottles B in a row, and the screw 12 is a large number of bottles B that are conveyed by the conveyor 11 (the intervals between these bottles B are not necessarily constant). Is adjusted to a predetermined interval (corresponding to the interval between the plurality of recesses 13a for holding the bottle B formed on the periphery of the star wheel 13).

  The star wheel 13 rotates in synchronization with a later-described main shaft 16 of the label mounting device 2, and transfers the bottle B to the label mounting device 2 while holding the plurality of bottles B at equal intervals on the outer peripheral portion. Specifically, the star wheel 13 has a function of holding each bottle B conveyed by the conveyor 11 and the screw 12 by each concave portion 13a for holding the bottle and conveying it to the label mounting device 2.

  The label mounting device 2 holds the bottle B supplied from the bottle supply device 1 and conveys them in the circumferential direction, and also delivers the label L from the label delivery device 6 during the conveyance, and the delivered label L is inserted into the bottle B, and the bottle B to which the label L is attached is transferred to the bottle conveying device 7.

  The label mounting device 2 has a plurality of label mounting heads (not shown) for holding the bottle B and a plurality of label mounting heads radially spaced apart from each other (this interval is substantially the same as the interval between the portions 13a of the star wheel 13). The main shaft 16 is attached. The label mounting head is rotated when the main shaft 16 is rotated by a main shaft motor 62 described later. Note that the rotation speed of the label mounting head is controlled by a host controller 60 described later, and can be changed according to the production amount of the bottle B. The label mounting head is provided with a label insertion portion (not shown). The label insertion portion is for inserting the label L delivered by the label delivery device 6 into the bottle B from above (in FIG. 1, it is inserted in a direction from the near side perpendicular to the paper surface toward the paper surface). .

  The label mounting device 2 transports the bottle B supplied from the bottle supply device 1 in the bottle delivery position K1 (see FIG. 1) in the circumferential direction while being held by the label mounting head. The label attaching device 2 receives the label L from the label delivery device 6 at the delivery position K2 (see FIG. 1), and the received label L is transferred to the bottle B by the label insertion portion at the label attachment position K3 (see FIG. 1). Installing. Then, the label mounting device 2 transfers the bottle B with the label L mounted to the bottle transport device 7 at the delivery position K4 (see FIG. 1).

  The bottle transport device 7 is for transporting the bottle B attached with the label L to a heating device (not shown) for thermally shrinking the label L attached to the bottle B. The bottle transport device 7 includes a star wheel 18 and a conveyor 20. When the bottle supply device 1 is the input side of the bottle B with respect to the label mounting device 2, the bottle transport device 7 is the output side of the bottle B.

  The star wheel 18 rotates in synchronization with the main shaft 16 of the label mounting device 2 and holds the bottles B delivered from the label mounting head of the label mounting device 2 at equal intervals (formed on the periphery of the star wheel 13). The bottle is held in the concave portion 18a for holding the bottle) and conveyed toward the conveyor 20. The conveyor 20 is driven by a conveyance motor 66 described later, and conveys the bottle B conveyed from the star wheel 18 toward the heating device.

  The label base material transport device 3 continuously feeds the long label base material S fed from the base material feed section 22 at a predetermined speed. As shown in FIG. 2, the label base material transport device 3 sandwiches a feed roller 23 driven by a feed motor 68 described later and the label base material S folded in a substantially sheet shape between the feed roller 23. And a driven roller 24. The feed motor 68 is rotationally controlled by a control device 61 described later. The label base material S sandwiched between the rollers 23 and 24 is sent out at a constant speed by the rotation of the feed roller 23, and the base material cutting position on the rotary blade 28 (described later) of the label generator 4 provided below them. K5 (see FIG. 2).

  As shown in FIG. 3, the label base material S is formed by continuously connecting substantially cylindrical labels L attached to the bottle B. The label base material S is wound around, for example, a base material reel (not shown) in a state of being folded into a substantially sheet shape in the base material feeding portion 22. In the following description, in order to distinguish between the label L connected in the state of the label base material S and the cut label L, the label L connected in the state of the label base material S is referred to as “design label DL. ".

  The label base material S has a configuration in which design labels DL are continuously connected. The design label DL is configured by a design portion D for representing the name of the bottle B and the like, and a transparent clear portion CL, for example. . The label base material S is usually generated into a plurality of labels L by being cut at substantially the center of the clear portion CL (see the one-dot chain line in FIG. 3). The length of the design label DL when cut at the center of the clear portion CL at both ends is hereinafter referred to as “cut length” (see C in FIG. 3).

  For example, rectangular marks M are formed at appropriate positions in the design label DL. The mark M is detected by a mark sensor 26 described later, and serves as a reference position when the label base material S is cut by the label generating device 4. As the mark M, a shape of a design drawn in the design label DL, a character or a symbol, or a part thereof (for example, a part of the shape) may be used instead of a rectangular shape. . Further, the formation position of the mark M is not limited to the position shown in FIG. 3 in the design label DL, and may be formed near the center or near the left end of the design label DL.

  A mark sensor 26 is provided in the middle of the supply path of the label base material transport device 3 (see FIG. 2). The mark sensor 26 is for detecting a mark M provided in each design label DL. The mark sensor 26 optically detects the presence or absence of the mark M, for example, and a reflective type or a transmissive type is used. The detection result of the mark sensor 26 is output to the control device 61 described later, and the control device 61 recognizes the detection timing when the mark M in each design label DL is detected.

  The label generation device 4 generates a plurality of labels L by sequentially cutting the label base material S supplied by the label base material transport device 3 at a substantially constant speed into a predetermined length at a constant cycle. The label generating device 4 includes a fixed blade 27 fixedly installed at the base material cutting position K5 and a rotary blade 28 driven by a rotary blade motor 71 described later. The rotation of the rotary blade motor 71 is controlled by a control device 61 which will be described later, and the feed roller 23 and the rotation speed thereof are synchronized. The rotary blade 28 sequentially generates labels L of a predetermined length by sequentially cutting the label base material S that is continuously sent out at a constant speed by the label base material transport device 3 every rotation.

  For example, when the time for which the rotary blade 28 rotates once is t [seconds] and the transport speed of the label base material S transported by the feed roller 23 and the driven roller 24 is V [cm / second], the label base material S is Cutting is performed in units of V · t [cm]. Accordingly, when the length of a large number of labels L arrayed and printed on the label base material S is Z [cm], the label base material S is combined with the cutting position at the head of the label base material S at a transport speed of Z / t. If S is conveyed, the label base material S will be cut in units of length Z [cm] every time t [seconds], whereby each label L will be sequentially generated.

  The label conveying device 5 sequentially conveys the label L generated by the label generating device 4 to a label delivery position K6 (see FIGS. 1 and 2) located below. The label transport device 5 includes a guide roller 30 provided in the vicinity of the substrate cutting position K5 and the label delivery position K6, a pulley 31 that is rotated by driving a feed motor 73 described later, and 2 that is stretched over the pulley 31. The feed belt 32, a suction mechanism 33 that absorbs and holds the label L on the feed belt 32, and the label L are sequentially brought into close contact with the feed belt 32 from the lower end to the upper end of the feed belt 32 to the feed belt 32 by the suction mechanism 33. And a suction assisting portion 34 for assisting the suction holding operation of the label L.

  The two feed belts 32 are given a constant tension by the tension roller 36, and the rotation of the feed motor 73 causes the label base material transport device 3 to move between the vicinity of the base material cutting position K5 and the label delivery position K6. Circulate and move at a speed faster than the supply speed of the label substrate S.

  As shown in FIG. 4, the feed belts 32 are arranged in parallel in the vertical direction at intervals that are narrower than the width of the label L to be conveyed, and each feed belt 32 has a longitudinal direction at the center in the width direction. A number of suction holes 32a are formed at regular intervals.

  The suction mechanism section 33 is connected to a suction box 38 disposed along the feed belt 32 between the guide rollers 30 and 30 and a connection port 38a formed in the suction box 38 via a tube (not shown). And a suction device 77 (described later) such as a compressor. A suction port 38 b is opened on the contact surface of each suction box 38 with the feed belt 32.

  The suction assisting part 34 is provided so as to face each feed belt 32 across the conveyance path of the label L, and includes a pair of pressing rollers 40, two guide rollers 41a and 41b, and a motor (not shown). The belt 43 is stretched around a pulley 42 rotated by the driving of the belt 43, and a tension applying mechanism 44 for applying tension to the belt 43. The belt 43 driven by the pulley 42 is set so as to circulate and move at the same speed as the moving speed of the feed belt 32. The pressing roller 40 presses the label L toward the feed belt 32 through the belt 43 in order to bring the label L sent from the base material cutting position K5 into close contact with the feed belt 32.

  The label transport device 5 is not limited to transporting the label L in the vertical direction, but may transport the label L in a substantially horizontal direction. In this case, the configuration of the label mounting device 2 may be a configuration in which the bottle B is transported along the substantially vertical direction instead of the configuration in which the bottle B is transported along the approximately horizontal direction.

  The label delivery device 6 receives the label L transported to the label delivery position K6 by the label transport device 5 and delivers it to the label delivery position K2 of the label mounting device 2 shown in FIG.

  The label delivery device 6 includes a plurality of take-up members 46 that hold the label L by suction, and a rotating shaft 47 that supports them radially. As shown in FIG. 5A, the take-up member 46 has a base portion 48 that extends in the vertical direction and a plurality of arm portions 49 that extend from the base portion 48 in the left-right direction. The take-up member 46 has a suction port 46a formed on the surface thereof, and the suction port 46a is connected to a suction device 78 described later. As shown in FIG. 5B, the take-up member 46 conveys the received label L while sucking it with the suction force of the suction device 78.

  The rotary shaft 47 of the label delivery device 6 is connected to the main shaft 16 of the label mounting device 2 via a gear (not shown) by a host control device 60 described later, and is rotated in conjunction with and synchronized with the main shaft 16. The take-up member 46 is moved substantially in the horizontal direction as shown in FIG. 2 when the rotary shaft 47 is rotationally driven, and sequentially receives the labels L at the label delivery position K6.

  During normal system operation, the timing at which the label L is transported to the label delivery position K6 of the feed belt 32 by the label transport device 5 and the timing at which the label L is received by the take-up member 46 are set to coincide with each other. Yes. That is, the take-up member 46 sequentially receives the labels L at the timing when the labels L are transported to the label delivery position K6 by the label transport device 5.

  More specifically, when the take-up member 46 receives the label L, the upper end of the uppermost arm portion 49 of the take-up member 46 coincides with the upper end of the label L, as shown in FIG. The label L is received at such timing.

  The label L moved by the take-up member 46 is delivered to the label mounting device 2 at the delivery position K2 shown in FIG. The label mounting head of the label mounting apparatus 2 is provided with a receiving portion 50 for receiving the label L moved by the take-up member 46, as shown in FIG. . The receiving portion 50 is gripped by a pair of swingable arms 52, 52 having grips 51, 51 attached to the ends, an opening / closing device 53 for opening / closing the swing arms 52, 52, and the grips 51, 51. And a suction device (not shown) for sucking the label L to be sucked. 6A shows a state in which the label L is gripped by the gripping portion 51, and FIG. 6B shows a state in which the sheet-like label L is opened in a cylindrical shape.

  As shown in FIG. 7 (the figure is a side view), the grip 51 is composed of a base 54 extending in the vertical direction and a plurality of grip arms 55 extending substantially horizontally from the base 54. ing. As shown in FIG. 7, the receiving unit 50 receives the label L transported in a state where one side is sucked and held by the take-up member 46 at the delivery position K <b> 2, as shown in FIG. 7. The label L is received by being gripped while being alternately combined with being separated from each other. The label L opened by the receiving portion 50 is inserted into the bottle B from above by the label insertion portion K3 shown in FIG.

  FIG. 8 is a block diagram showing an electrical configuration of the label mounting system. The label mounting system includes a host control device 60 and a control device 61. The host control device 60 is connected to the control device 61, and data related to the label mounting operation between the host control device 60 and the control device 61. Control signals and the like are input / output from / to each other.

  The host control device 60 is a device that comprehensively controls the label mounting system. The host controller 60 is connected with an inverter 63 that drives a spindle motor 62 for rotating the spindle 16 of the label mounting apparatus 2. When the host controller 60 outputs a control signal for rotationally driving the spindle motor 62 to the inverter 63, the inverter 63 outputs a drive signal to the spindle motor 62, whereby the spindle motor 62 is rotationally driven. The main shaft 16 and the screw 12 are rotated.

  The host controller 60 is connected to an inverter 65 that drives a conveyance motor 64 for operating the conveyor 11 of the bottle supply device 1. When the host controller 60 outputs a control signal for operating the conveyor 11 to the inverter 65, a drive signal is output from the inverter 65 to the transport motor 64, whereby the transport motor 64 is rotationally driven, and the conveyor 11. Transports the bottle B toward the label mounting device 2.

  The host controller 60 is connected to an inverter 67 that drives a transport motor 66 for operating the conveyor 20 of the bottle transport device 7. When the host controller 60 outputs a control signal for operating the conveyor 20 to the inverter 67, a drive signal is output from the inverter 67 to the transport motor 66, whereby the transport motor 66 is rotationally driven, and the conveyor 20. Conveys the bottle B toward the heating device.

  The host controller 60 can change the rotation speeds of the spindle motor 62 and the conveyance motors 64 and 66, and the supply speed of the bottle B can be changed by changing these rotation speeds. The rotating shaft 47 of the label delivery device 6 is rotated in conjunction with the main shaft 16 rotated by the main shaft motor 62. Therefore, when the rotational speed of the main shaft 16 is changed by the host controller 60, the rotating shaft 47 is synchronized with it. The rotational speed of 47 also changes.

  The control device 61 includes a microcomputer (not shown), and based on a command from the host control device 60 and an operation program stored in advance, the feed roller 23 of the label base material transport device 3 and the rotary blade of the label generation device 4 28 and each operation of the feed belt 32 of the label conveying device 5 is controlled. The control device 61 includes a memory (not shown) for storing various data.

  The control device 61 is connected to an inverter 63 connected to the host control device 60. By inputting a detection signal of a spindle encoder (not shown) from the inverter 63, the rotational speed of the label mounting head of the label mounting device 2 is controlled. Always know. In other words, the spindle encoder generates a predetermined reference pulse group (for example, 5000 pulses) during a period from when one bottle B is transported by the label mounting device 2 to the position of the previous bottle B from the current position. This is output to the control device 61. The control device 61 determines the timing at which the rotary blade 28 cuts the label substrate S based on this reference pulse group, and controls the rotary blade motor 71. Further, the control device 61 constantly grasps the rotational speed of the take-up member 46 of the label delivery device 6 by inputting the detection signal of the spindle encoder.

  The control device 61 is connected to a servo amplifier 69 that controls a feed motor 68 for rotationally driving the feed roller 23. When the control device 61 outputs a control signal for rotating the feed roller 23 to the servo amplifier 69, a drive signal is output from the servo amplifier 69 to the feed motor 68, whereby the feed motor 68 is rotationally driven. The feed roller 23 rotates. Further, the detection signal of the pulse encoder 70 attached to the feed motor 68 is input to the control device 61. Thereby, the control device 61 is configured to grasp the rotational speed of the feed roller 68.

  A servo amplifier 72 that controls a rotary blade motor 71 for rotationally driving the rotary blade 28 is connected to the control device 61. When the control device 61 outputs a control signal for rotating the rotary blade 28 to the servo amplifier 72, a drive signal is output from the servo amplifier 72 to the rotary blade motor 71, whereby the rotary blade motor 71 rotates. When driven, the rotary blade 28 rotates. Further, a detection signal of an encoder (not shown) attached to the rotary blade motor 71 is input to the control device 61 via a servo amplifier 72.

  The controller 61 is connected to a servo amplifier 74 that controls a feed motor 73 for rotationally driving the pulley 31 around which the feed belt 32 is stretched. When the control device 61 outputs a control signal for rotating the pulley 31 to the servo amplifier 74, a drive signal is output from the servo amplifier 74 to the feed motor 73, whereby the feed motor 73 is rotationally driven. The pulley 31 rotates and the feed belt 32 is circulated. Further, a detection signal of an encoder (not shown) attached to the feed motor 73 is input to the control device 61 via a servo amplifier 74.

  A mark sensor 26 for detecting the mark M provided for each design label DL is connected to the control device 61, and an output signal of the mark sensor 26 is input. The control device 61 recognizes the timing at which the mark sensor 26 detects the mark M based on the output signal from the mark sensor 26.

  The control device 61 is connected to an operation display device 75 for an operator to perform various settings related to the label mounting operation and to display the state of the label mounting operation. In the operation display device 75, a portion serving as an operation display screen is configured by a so-called touch panel and a display unit provided on the back surface of the touch panel (both not shown). For example, an operator performs a predetermined operation through the touch panel. As a result, an operation signal corresponding to that is output to the control device 61. Further, display data from the control device 61 is input to the operation display device 75, and display contents corresponding to the display data are displayed on the display unit.

  A suction device 77 for sucking and holding the label L on the feed belt 32 is connected to the control device 61. The suction device 77 is controlled by a control signal from the control device 61.

  A suction device 78 for the take-up member 46 to suck the label L is connected to the control device 61. The suction device 78 is controlled by a control signal from the control device 61.

  FIG. 9 is a diagram illustrating an example of a screen displayed on the display unit of the operation display device 75. In the present embodiment, when the label substrate S is cut by the rotary blade 28, the normal cutting position in each design label DL and the deviation from the normal cutting position can be displayed. Hereinafter, the display screen shown in FIG. 9 will be described.

  The display screen of the operation display device 75 includes a “cut error monitor” switch 75a, a “sensor ON position display” switch 75b, a “function selection” switch 75c, and a first numerical value display portion 75d for displaying the number of times of light incident on the sensor. And a second numerical value display part 75e for displaying the actual measurement address length (described later), a third numerical value display part 75f for displaying the actual measurement cut length (described later), and the detection position of the mark M of the design label DL by the mark sensor 26. A first graph display portion 75g to be shown and a second graph display portion 75h to display a gate width (described later) are provided.

  The “cut error monitor” switch 75a is a switch for switching the display screen to the “cut error monitor” screen. The “cut error monitor” screen will be described later. The “sensor ON position display” switch 75 is a switch for switching the display screen to the “sensor ON position display” screen. FIG. 9 shows a “sensor ON position display” screen when the “sensor ON position display” switch 75b is pressed. In this case, the characters “sensor ON position display” are highlighted. The “function selection” switch 75c is a switch for selecting various functions. When the “function selection” switch 75c is pressed, the screen switches to the “function selection” screen.

  The “sensor ON position display” screen is a relative positional relationship between the detection position by the mark sensor 26 and the mark M in each design label DL of the label base material S mainly at the cutting timing of the label base material S by the rotary blade 28. Is displayed in units of one for each design label DL.

  Here, the “number of times of sensor incident” refers to the number of times the mark sensor 26 detects the mark M in one design label DL. For example, as shown in FIG. 3, in the case where one mark M is provided in the design label DL, if the mark sensor 26 detects the mark M, “once” is displayed on the first numerical value display portion 75d. Is displayed. Further, for example, when the mark sensor 26 fails and the detection signal of the mark sensor 26 is not input to the control device 61, “0 times” is displayed.

  The “measured address length” means that the label base material S is supplied at a speed set in advance by the label base material transport device 3 after the label base material S is cut by the rotary blade 28 of the label generating device 4, and the mark sensor 26 is a transport distance in which the label base material S is transported by the label base material transport device 3 until the mark M on the design label DL is detected by 26.

  10A shows a state when the label substrate S is cut by the rotary blade 28, and FIG. 10B shows a state when the mark M on the design label DL is detected by the mark sensor 26. FIG. Indicates. That is, the transport distance as the “measured address length” refers to the distance that the label base material S is transported from the state of FIG. 10A to the state of FIG. 10B.

  The control device 61 recognizes the distance for transporting the label base material S per one rotation of the feed roller 23, and detects the number of rotations of the feed roller 23 based on the output from the pulse encoder 70. Calculate the distance. In the second numerical value display portion 75e, the transport distance calculated by the control device 61 is displayed as “actually measured address length”.

  The “actual cut length” refers to a transport distance in which the label base material S is transported by the label base material transport device 3 from when the mark M is detected by the mark sensor 26 until the next mark M is detected. Say. The control device 61 calculates the transport distance by detecting the number of rotations of the feed roller 23 based on the output from the pulse encoder 70. On the third numerical value display portion 75f, the transport distance calculated by the control device 61 is displayed as “actual cut length”.

  The first graph region 75g visually represents the detection position of the mark M by the mark sensor 26 on the design label DL. More specifically, the length from the right end to the left end of the first graph region 75g corresponds to the length of almost one design label DL. For example, an inverted triangle P (hereinafter referred to as “pointer P” shown in FIG. 9). The position of the vertex of “)” is the detection position of the mark M by the mark sensor 26. The pointer P is displayed on the first graph area 75g at the timing when the mark sensor 26 detects the mark M, as shown in FIG. 10 (b).

The second graph area 75h represents the position of the “set address length” and the gate width, which is a reference when determining the positional deviation of cutting. The “set address length” is, for example, as shown in FIG. 10A, between the mark M and the mark sensor 26 provided on the design label DL when the label base S is cut by the rotary blade 28. refers to the distance a between the detected position (see M ₀ in FIG. 10 (a)), which corresponds to the reference distance as referred to herein. The “set address length A” is actually measured in advance by the operator in the state shown in FIG. 10A and is set and input via the operation display device 75. Incidentally, in the second graph area 75h, the value of "Setting address length A" is not displayed in the direct center of the gate width (see G ₀ in FIG. 9) is that value. Further, as shown in FIG. 10A, the set address length A may be set to the distance between the mark M and the mark sensor 26 in the same design label DL, or between the different design labels DL. The distance between M and the mark sensor 26 may be set.

  The “gate width” is a predetermined range centering on the value of the set address length A, and indicates an allowable range when determining whether or not to output a mark error (described later). Specifically, a range G represented by the vertices of two peaks MM in the second graph region 75h of FIG. 9 indicates the gate width. When the gate width G is set and inputted, for example, by an operator (for example, 20 mm), the gate width G becomes ± 10 mm centered on the value of the set address length A. When the set address length A and the gate width G are input, the control device 61 recognizes the set address length A as the center value of the gate width G and recognizes the value of the gate width G.

  Thus, in the second graph area 75h, when the label base material S is cut by the rotary blade 28, the set address length A which is the distance between the mark M measured by the operator and the mark sensor 26 (FIG. 10 (a)) and a gate width G that is an allowable range centered on the set address length A is displayed. On the other hand, in the first graph area 75g, the measured address length to which the label base material S is conveyed from the state of FIG. 10 (a) to the state of FIG. 10 (b) depends on the position where the pointer P is displayed. Is displayed.

  Therefore, the set address length A and the actually measured address length can be substantially compared by arranging the first graph area 75g and the second graph area 75h in parallel on the “sensor ON position display” screen. Since the set address length A is set as a reference distance when the label base material S is cut, a deviation of the actually measured address length with respect to the set address length A is a deviation at the time of cutting the label base material S. Will be represented.

  That is, in order for the label base material S to be reliably cut at the regular position, it is an important factor that the label base material transport device 3 accurately transports the label base material S to a predetermined position. Therefore, by detecting how accurately the label base material transport apparatus 3 transports the reference distance (set address length A) set when the label base material S is cut, It can be determined whether or not the cutting timing of the substrate S is accurate.

In the present embodiment, a reference distance (set address length A) between the mark M and the detection position by the mark sensor 26 (see M _{0 in} FIG. 10A) when the label base material S is cut is set, and the label base material is set. When S is transported and the mark sensor 26 detects the mark M, the transport distance (actually measured address length) of the label base material S actually transported by the label base material transport device 3 is calculated. Then, the cutting distance of the label substrate S is visually output by causing the operation display device 75 to display the transport distance (measured address length) with respect to the reference distance (set address length A).

  Therefore, the operator can visually recognize how much the measured address length is with respect to the set address length A by viewing the display on the “sensor ON position display” screen, and the cutting timing of each design label DL. It is possible to visually grasp the deviation. In addition, in the “sensor ON position display” screen shown in FIG. 9, the measured address length with respect to the set address length A is displayed. For example, at the start of system operation, is the cutting position correct with respect to the label substrate S? It is effective when used to determine whether or not.

  When the detection position of the mark M detected by the mark sensor 26 deviates from the gate width G (allowable range), that is, the vertex of the pointer P indicated by the first graph display unit 75g in FIG. 9 is displayed in the second graph. When deviating from the range G indicated by the vertices of the two peaks MM indicated by the portion 75h, the control device 61 notifies the mark error to the outside.

  FIG. 11 is a diagram showing another example of the screen displayed on the display unit of the operation display device 75, and represents the “cut error monitor” screen described above. The “cut error monitor” is a display screen that displays a state before and after a cut error occurs. For example, when the operator presses the “cut error monitor” switch 75a, the screen is switched to the “cut error monitor” screen, and the characters “cut error monitor” are highlighted. The “cut error” is an error output when the cutting position of the label base material S by the rotary blade 28 is out of a predetermined minute allowable range (hereinafter referred to as “good cut range”). .

  In the “sensor ON position display” screen shown in FIG. 9, the actually measured address length for the set address length A is displayed for one of the design labels DL, but in this “cut error monitor” screen, the actually measured address length for the set address length A is displayed. The address length is displayed for a plurality of design labels DL. Hereinafter, the display screen shown in FIG. 11 will be described.

  In addition to the “cut error monitor” switch 75a, the “sensor ON position display” switch 75b, and the “function selection” switch 75c, the “cut error monitor” screen is provided with a graph display section 75j. The “cut error monitor” switch 75a, the “sensor ON position display” switch 75b, and the “function selection” switch 75c have the same functions as the “sensor ON position display” screen shown in FIG.

  The graph display unit 75j indicates the relative positional relationship between the detection position by the mark sensor 26 and the mark M in each design label DL of the label base material S at the cutting timing by a predetermined number of design labels DL (for example, 50). Sheet) at a time.

  More specifically, the graph display unit 75j displays the relationship between the gate width G and the difference between the measured address length and the set address length A in the plurality of design labels DL. That is, the horizontal axis of the graph display portion 75j represents the number of design labels DL, and the vertical axis represents the difference between the measured address length and the set address length A. The center of the vertical axis indicates the case where the difference between the measured address length and the set address length A is “0”, and the upper side from the center of the vertical axis indicates the case where the measured address length> the set address length A. The lower side from the center of the axis shows a case where the measured address length <the set address length A. The upper end to the lower end of the vertical axis represent the gate width G (the range represented by “GATE +” to “GATE−” in the figure). In the graph display section 75j, the value shown at the right end represents data indicating the latest positional relationship, and the data goes back in the past as it goes to the left.

  Inside the gate width G, a predetermined range (range represented by “ERR +” to “ERR−” in the figure) extending from “0” in the vertical direction with the center of the vertical axis being “0” is “ It is provided as a “good cut range”. For example, ± 2 mm is set as the good cut range. When the difference between the measured address length and the set address length A is within the good cut range, the cutting timing of the label base material S is normal, and the difference between the measured address length and the set address length A is outside the good cut range. When the value is within the value of the gate width G, the control device 61 recognizes a cut error and displays it outside. When the difference between the actually measured address length and the set address length A deviates from the gate width G, a mark error is output as described above.

  Thus, for example, since the difference between the measured address length and the set address length A for the past 50 design labels DL is displayed, the change history of the difference between the measured address length and the set address length A or the past trend In addition to being able to grasp the object, it is possible to grasp the state immediately before the occurrence of a cut error, for example, from this display screen. Therefore, the cause of the cut error can be specified to some extent.

  FIG. 12 is a flowchart showing a control operation of the control device 61 for causing the operation display device 75 to display the display form.

  In this label mounting system, values such as a set address length A, a cut length C, and a gate width G are input in advance as initial setting information by an operator. For example, as shown in FIG. 10A, the operator sets the label substrate S on the feed roller 23 so that the cutting position thereof coincides with the rotary blade 28, and in that state, the mark sensor 26 and the design label are set. The distance from the mark M provided on the DL is measured. The distance between the mark sensor 26 and the mark M is the set address length A. Further, the operator measures the overall length of the plurality of design labels DL, and sets a value obtained by dividing the measured value by the number of design labels DL as the cut length C.

  When such initial setting information is input by the operator, the control device 61 starts operation of the system (S1). When the operation is started, as shown in FIG. 10A, the label base material S is started from a state where it is cut by the rotary blade 28. When the label base material S is cut by the label generating device 4, the control device 61 starts measuring the rotation speed of the feed motor 68 based on the pulse signal output from the pulse encoder 70 attached to the feed motor 68. (S2). Thereafter, the control device 61 determines whether or not the mark M of the design label DL is detected by the mark sensor 26 (S3).

  When it is determined that the mark M is detected by the mark sensor 26 (S3: YES), the control device 61 acquires the number of rotations of the feed motor 68 from when the label base material S is cut until the mark M is detected. (S4).

  The control device 61 is based on the number of rotations of the feed motor 68 (more precisely, the number of pulses output from the pulse encoder 70 until the mark M is detected by the mark sensor 26 after the label substrate S is cut). The transport distance (actually measured address length) from the start of system operation (when the label base material S is cut) to the time when the mark M is detected by the mark sensor 26 is calculated (S5), which is converted into data form and shown in the figure. (S6).

  Further, the control device 61 calculates the difference between the set address length A set and input before the system operation is started and the actually measured address length (S7), and stores it in the memory for each design label DL (S8).

  It is determined whether or not the number of data stored in the memory is greater than or equal to a predetermined number (for example, 50) (S9). It is erased (S10). Thereafter, the process returns to the process of step S2.

  In this way, the relative positional relationship between the detection position by the mark sensor 26 in each design label DL of the label base material S at the cutting timing and the mark M is accumulated in the memory in the form of data. Note that the second and subsequent cutting timings of the design label DL are recognized based on the cut length C set in advance by the operator.

  Here, when the system is stopped due to some error being output, if the operator depresses the “sensor ON position display” switch 75b via the operation display device 75, the “sensor ON position display” screen (see FIG. 9). ) Is displayed.

  In this case, the latest data stored in the memory is displayed on the first graph display section 75g and the second graph display section 75h. That is, the conveyance distance (actually measured address length) of the label base material S stored in step S6 is called from the memory and displayed as the vertex of the pointer P on the first graph display section 75g. On the other hand, in the second graph display portion 75h, a preset gate width G is displayed around the preset value of the set address length A.

  At this time, as shown in FIG. 13, when the vertex of the pointer P is out of the gate width G, the control device 61 recognizes that it is a mark error and outputs the fact that the mark error has occurred to the outside. In such a case, the operator may perform inspections such as resetting the set address length A and confirming the cutting position of the label base material S.

  Further, as shown in FIG. 14, when the pointer P itself is not displayed and the number of times of sensor incident light is “0”, it is considered that the control device 61 does not input the output signal of the mark sensor 26. . In such a case, the operator may check whether or not the mark sensor 26 is broken or disconnected.

  Further, when the system is stopped due to some error being output, when the operator depresses the “cut error monitor” switch 75a via the operation display device 75, the “cut error monitor” screen (see FIG. 11) is displayed. Is done.

  In this case, the graph display unit 75j displays a predetermined number of data immediately stored in the memory of the design label DL. That is, a plurality of differences between the set address length A that has been set and input and the actually measured address length are displayed together.

  At this time, as shown in FIG. 15, when the difference between the set address length A and the actually measured address length is outside the good cut range, it can be seen that a cut error has occurred (see point E in FIG. 15). In addition, since the scale corresponding to 10 design labels DL is displayed on the horizontal axis of the graph display portion 75j, it is possible to grasp the approximate number of sheets where the cut error has occurred. Further, when a plurality of differences between the set address length A and the actually measured address length are collectively displayed as described above, it is possible to grasp the time course of the difference between the set address length A and the actually measured address length. it can.

  When a cut error occurs, the operator checks whether the label L is not clogged during conveyance, whether the feed roller 23 is slippery, or whether the label conveyance device 5 is conveyed with an appropriate tension. Whether or not chattering has occurred during detection by the mark sensor 26 may be checked.

  14 shows the case where the pointer P itself is not displayed on the “sensor ON position display” screen, the state where the pointer P itself is not displayed can also be displayed on the “cut error monitor” screen. That is, for example, as shown in FIG. 16, when there is a discontinuous portion (see F in FIG. 16) on the graph in the “cut error monitor” screen, the state where the pointer P itself is not displayed in this portion F is shown. Yes. When there is such a discontinuous portion F, it indicates that the detection sensitivity of the mark sensor 26 is unstable. In such a case, the sensitivity adjustment of the mark sensor 26 may be performed. Note that the discontinuous portion (see F in FIG. 11) on the graph in the “cut error monitor” screen shown in FIG. 11 similarly indicates that the detection sensitivity of the mark sensor 26 is unstable.

Of course, the scope of the present invention is not limited to the embodiment described above. For example, in the above embodiment, the gate width G is displayed on the second graph display portion 75h of the “sensor ON position display” screen, but instead of this, a pointer indicating the set address length A as shown in FIG. P ₀ may be displayed. Further, instead of displaying the gate width G on the “sensor ON position display” screen, the “cut good range” described on the “cut error monitor” screen may be displayed. In the above embodiment, when a cut error or a mark error occurs, it may be notified by a sound such as an alarm, or may be displayed by a blinking lamp or the like.

  In the above embodiment, when a cut error or a mark error occurs, the content of the error is automatically determined based on data for displaying the “sensor ON position display” screen or the “cut error monitor” screen, You may make it alert | report the appropriate treatment by an operator. Alternatively, when a cut error or a mark error is likely to occur, that is, when the actual address length value is likely to deviate from the gate width G, or the difference between the actual address length and the set address length A is likely to deviate from the good cut range. In some cases, the operator may be notified in advance.

It is a figure which shows schematic structure of the label mounting system to which the label supply system which concerns on this invention is applied. It is a figure which shows the structure of a label base material conveying apparatus, a label production | generation apparatus, and a label conveying apparatus. It is a figure which shows the structure of a label base material. It is a principal part block diagram of a feed belt. FIG. 2 shows a configuration of a take-up, in which (a) is a side view of the take-up, and (b) is a perspective view showing a state where the take-up adsorbs a label. It is a figure which shows the structure of the receiving part of a label mounting apparatus, (a) shows the state which the label held by the holding part of the receiving part, (b) shows the state which opened the sheet-like label in the cylinder shape. It is a figure which shows a state when take-up delivers a label to a holding part. It is a figure which shows the electrical constitution of the label mounting system which concerns on this invention. It is an example of a display screen of the operation display device, and is a diagram showing a “sensor ON position display” screen. It is a figure which shows the positional relationship of a label base material, a rotary blade, and a mark sensor, (a) shows the state when a label base material is cut | disconnected, (b) shows the state when a mark is detected. It is an example of a display screen of the operation display device, and is a view showing a “cut error monitor” screen. It is a flowchart which shows the control action of a control apparatus. It is an example of the display screen of the operation display device, and is a diagram showing a case where the vertex of the pointer is out of the gate width. It is an example of a display screen of the operation display device, and shows a case where a pointer is not displayed. It is an example of a display screen of the operation display device and is a diagram showing that a cut error has occurred. It is an example of the display screen of the operation display device, and is a diagram showing a case where there is a broken portion in the graph. It is a figure which shows the modification of the display screen of an operation display apparatus. It is the schematic of the conventional label mounting system. It is a figure which shows the structure of a label base material, (a) shows the case where a label base material is cut | disconnected in a regular position, (b) shows the case where the cutting position of the label base material S has shifted | deviated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottle supply apparatus 2 Label mounting apparatus 3 Label base material conveyance apparatus 4 Label production | generation apparatus 5 Label conveyance apparatus 6 Label delivery apparatus 7 Bottle conveyance apparatus 23 Feed roller 26 Mark sensor 28 Rotary blade 60 Host controller 61 Control apparatus 68 Feed motor 70 Pulse encoder 75 Operation setting device A Setting address length B Bottle DL Design label G Gate width L Label M Mark P Pointer S Label substrate

Claims (5)

A label base material supply means for supplying a label base material in which a plurality of labels are arranged in a line;
Label generating means for generating a plurality of labels by cutting the label base material supplied by the label base material supplying means;
In the label supply system with
A detecting means provided in the middle of the supply path by the label base material supply means, for detecting a preset reference position in each label of the label base material;
Setting means for setting a reference distance from the reference position to the detection means when the label base is cut by the label generation means in the label base;
Measuring means for measuring a distance from the reference position at the time of cutting the label base material to a position at which the label base material is supplied by the label base material supply means and the detection means detects the reference position;
Display control means for comparing the reference distance set by the setting means with the measurement distance measured by the measurement means and displaying on the display means;
A label supply system comprising: The label substrate supply means includes
A pair of feed rollers for conveying the label base material as it is sandwiched, and pulse output means for outputting the number of rotations of the feed roller as a pulse;
The measuring means includes
Based on a pulse representing the rotation speed of the feed roller output by the pulse output means, a distance from the reference position at the time of cutting the label base material to a position where the detection means detects the reference position is measured. The label supply system according to claim 1. The display control means includes
The label supply system according to claim 2, wherein an allowable range centered on the reference distance and a deviation of the measurement distance with respect to the reference distance in the allowable range are displayed on the display unit. The display control means includes
The label supply system according to claim 1, wherein a relationship between the reference distance and the measurement distance is displayed on the display unit in units of one label. The display control means includes
4. The label supply system according to claim 1, wherein a relationship between the reference distance and the measurement distance is collectively displayed on the display unit for a predetermined number of the labels. 5.

Images