JP2017154399A - System and method for producing labeled molded body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system and a method for producing a labeled molded body, in which two labels can be prevented from being taken, the accuracy of the position of a label on an inner face of a die is high, and time required for aligning and transporting a label can be shortened.SOLUTION DEVICE: Plural labels L peelably pasted to be next to each other in the extending direction of a belt-shaped separator S are supplied on a one-by-one basis. The labels L supplied on a one-by-one basis are sucked and retained by a suction plate 20. The deviation of the actual position of the sucked and retained labels from a label reference position on the suction plate 20 is calculated. The suction plate 20 is moved to correct the deviation while the labels L move to the predetermined label delivery position γ of an inserter 60 that inserts the labels L into a die 55.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a manufacturing system and a manufacturing method for a labeled molded body, in which a label is inserted into a mold to manufacture a molded body with an in-mold label.

  Conventionally, there is a system described in Patent Document 1 as a manufacturing system for a labeled molded body. In this manufacturing system for a molded body with labels, the uppermost label is lifted by an adsorbent from a plurality of labels (sheets) stacked in a bundle, and then placed on a mounting table.

  When the label is placed on the placement table, the label detection roller is lowered to sandwich the label with the placement table, and the position of the label is measured by energization. Subsequently, the label reference position and the measured label position are compared, the amount of deviation between them is calculated, and the mounting table is moved to the label reference position. Thereafter, the inserter sucks and holds the label matched with the label reference position and transfers it to a predetermined position on the inner surface of the mold.

JP-A-4-363217

  When a single label is picked up from a plurality of labels stacked in a bundle state as in the manufacturing system of a labeled molded body of Patent Document 1, two labels may be taken.

  Moreover, in the manufacturing system of the labeled molded body of Patent Document 1, after the label is positioned on the mounting table, the inserter sucks the label whose position is corrected on the mounting table, and transfers and arranges it on the inner surface of the mold. Therefore, the label position once positioned is likely to be shifted at the time of attracting and transferring the label by the inserter, and it is difficult to increase the position accuracy of the label on the inner surface of the mold. In addition, a separate adsorption body is required for placing labels stacked in a bundle on the placement table. After the label is placed on the placement table, the label is positioned on the placement table, and then the inserter is installed on the placement table. Since the upper label is sucked and held, it takes time to position and transfer the label.

  An object of the present invention is to provide a manufacturing system and a manufacturing method for a molded article with a label, which can prevent two labels from being taken out, has a high positional accuracy of the label on the inner surface of the mold, and can shorten the time required for the alignment and transfer of the label. Is to provide.

  A manufacturing system for a labeled molded body according to an aspect of the present invention is a manufacturing system for a labeled molded body for manufacturing a molded body with an in-mold label by inserting a label into a mold, and a predetermined label delivery position. The label is delivered at the same time, and an inserter for inserting the label into the mold and a plurality of the labels attached so as to be peeled so as to be adjacent to each other in the extending direction of the strip-shaped separator are supplied one by one. And a label transport device that transports the label supplied by the label supply device to the label delivery position, and the label transport device sucks and holds the label supplied by the label supply device. A suction plate, a plate moving device for moving the suction plate, and the suction with respect to a label reference position on the suction plate A deviation calculation unit that calculates a deviation amount of the label suction holding position on the rate, and the deviation amount while the label moves to the label delivery position after the deviation amount is calculated by controlling the plate moving device. And a control device having a moving device control unit for correcting the above.

  According to the present invention, since the plurality of labels are detachably attached so as to be adjacent to each other in the extending direction of the strip-shaped separator, when the suction plate sucks the label from the separator, two labels are taken from the separator. It will not be done. Therefore, for example, it is not necessary to apply a surface treatment for improving the dispersibility in order to suppress double labeling, and even a relatively thin label is stably supplied to the inserter. be able to. Therefore, the manufacturing cost and manufacturing man-hour of the label can be reduced.

  Further, after the amount of deviation of the label suction holding position on the suction plate with respect to the label reference position on the suction plate is calculated, the deviation is performed while the label moves to a predetermined label delivery position by controlling the plate moving device. The amount is corrected. Therefore, since the label positioning and the label delivery to the inserter are performed at the same time, the label position in the mold is less likely to be displaced than when the inserter sucks and holds the label after the label positioning. The positional accuracy of the label on the inner surface of the mold can be increased. In addition, since the label positioning and the label delivery to the inserter are performed at the same time, the time required for label alignment and transfer can be shortened.

  In the present invention, the label transport device may include a photographing device that photographs at least a part of the label on the suction plate in a state where the suction plate is disposed at a predetermined label photographing position. The calculation unit may calculate the shift amount of the label suction holding position on the suction plate based on an image shift amount of a label image position with respect to an image reference position of a captured image of the shooting device.

  In this case, the deviation calculating unit calculates the deviation amount of the label suction holding position with respect to the label reference position on the suction plate based on the deviation amount of the label image position with respect to the image reference position of the photographed image taken by the photographing device. The amount of displacement of the suction holding position can be calculated accurately, and the label can be accurately positioned.

  Further, in the present invention, the deviation calculation unit is configured to perform the image on the suction plate based on a horizontal image deviation amount, a vertical image deviation amount, and a rotation direction image deviation amount of the label image position with respect to the image reference position. The horizontal direction displacement amount, the vertical direction displacement amount, and the rotation direction displacement amount of the label suction holding position are calculated, and the moving device control unit is configured to calculate the horizontal direction displacement amount, the vertical displacement amount while the label moves to the label delivery position. The plate moving device may be controlled so as to correct the direction deviation amount and the rotational direction deviation amount.

  In this case, the shift amount of the label image position with respect to the image reference position can be calculated easily and precisely.

  Also, in the present invention, the plate moving device includes a horizontal movement servomotor and a horizontal movement ball screw for moving the suction plate in the horizontal direction, and a moving plate for moving the suction plate in the vertical direction. You may have a servo motor for vertical direction movement, a ball screw for vertical direction movement, and a servo motor for rotation for rotating the suction plate.

  In this case, since the suction plate is moved using a servo motor and a ball screw that can accurately manage the movement amount, the suction plate can be accurately moved.

  In the present invention, the control device recognizes the timing at which the predetermined portion of the label peels from the separator based on the moving speed of the separator and the label interval of the label attached to the separator, At a timing, the suction plate may suck a portion including at least a part of the predetermined portion of the label at a predetermined label receiving position.

  In this case, since the suction plate sucks the label at the predetermined label receiving position at the timing when the control unit determines that the predetermined part of the label is peeled from the separator, the label suction holding position relative to the label reference position on the suction plate is determined. The amount of deviation can be reduced. In addition, since the suction plate sucks around the peeled portion of the label peeled from the separator with good timing, the label can be smoothly transferred from the separator to the suction plate.

  A method for producing a labeled molded body according to another aspect of the present invention is a method for manufacturing a labeled molded body in which a label is inserted into a mold to produce a molded body with an in-mold label. A label supply step for supplying a plurality of labels, which are detachably attached so as to be adjacent to each other in the extending direction of the separator, and a label suction holding for sucking and holding the labels supplied one by one with a suction plate A deviation amount calculating step of calculating a deviation amount of the label suction holding position on the suction plate with respect to a label reference position on the suction plate; and a predetermined amount that the label is delivered to the inserter after the deviation amount is calculated. A plate moving step for moving the suction plate so as to correct the shift amount while moving to the label delivery position of the label, and the inserter The label by motor comprises a mold insert steps is insert into the mold.

  According to the present invention, since the plurality of labels are detachably attached so as to be adjacent to each other in the extending direction of the strip-shaped separator, when the label is sucked from the separator, two labels are taken from the separator. There is no. Therefore, it is not necessary to perform a surface treatment for improving the dispersibility in order to suppress double labeling. Therefore, the manufacturing cost and manufacturing man-hour of the label can be reduced.

  Further, after the amount of deviation of the label suction holding position on the suction plate from the label reference position on the suction plate is calculated, the amount of deviation is corrected while the label moves to a predetermined label delivery position. Therefore, since the label positioning and the label delivery to the inserter are performed at the same time, the label position on the inner surface of the mold is less likely to be displaced than when the inserter sucks and holds the label after positioning the label. The positional accuracy of the label on the inner surface of the mold can be increased. In addition, since the label positioning and the label delivery to the inserter are performed at the same time, the time required for label alignment and transfer can be shortened.

  According to the present invention, it is possible to prevent two labels from being taken, and it is possible to increase the positional accuracy of the label on the inner surface of the mold. Also, the time required for label alignment and transfer can be shortened.

It is a schematic diagram for demonstrating the outline | summary of the manufacturing system of the labeled molded object which is one Embodiment of this invention. (A) is a top view which shows the state by which the some label was stuck on the strip | belt-shaped separator, (b) is a figure which shows a state when a label peels and is supplied from a separator. It is a perspective view of the molded object to which the label was attached | subjected. It is a perspective view which shows a state when the suction plate which sucked and held the label has moved to the label photographing position. (A) is a schematic top view which shows the moving mechanism of the plate moving apparatus which moves a suction plate, (b) is a schematic side view when this moving mechanism is seen from the arrow D direction in (a). is there. It is a functional block diagram which shows a control apparatus. It is a schematic diagram which shows an example of the picked-up image by an imaging device. It is a schematic perspective view when the suction plate is moved to the label receiving position and the state in which the label receiving operation is performed is viewed from the back side of the suction plate. FIG. 6 is a schematic perspective view when the suction plate holding the label is moved to the label photographing position and the state where the label is photographed is viewed from the back side of the suction plate. FIG. 10 is a schematic perspective view when the suction plate holding the label is moved to the label delivery position and the state where the label is delivered to the inserter is viewed from the back side of the suction plate.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, and the like are examples for facilitating the understanding of the present invention, and can be appropriately changed according to the application, purpose, specification, and the like. In addition, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that these characteristic portions are used in appropriate combinations. Hereinafter, the container C will be described as an example of a molded body to be labeled.

  FIG. 1 is a schematic diagram for explaining the outline of a labeled molded body manufacturing system (hereinafter simply referred to as a manufacturing system) 1 according to an embodiment of the present invention. FIG. 2A is a plan view showing a state in which a plurality of labels L are stuck on the strip-shaped separator S, and FIG. 2B shows a state where the labels L are peeled from the separator S and supplied. It is a figure which shows the state of. FIG. 3 is a perspective view showing a container C as an example of a molded body with a label L attached thereto.

  As shown in FIG. 1, the manufacturing system 1 includes a label supply device 10, a label transport device 15, and an inserter 60.

  The label supply device 10 includes a label supply reel 11, a peel plate 12, and a separator take-up reel 13. As shown in FIG. 2 (a), the label supply reel 11 is wound with a label L made of, for example, a rectangular film adhered to the separator S, which is a long strip of release paper, at a predetermined interval. It has been turned. That is, the some label L is stuck so that peeling is possible so that it may adjoin to the extending direction (feeding-out direction) of the separator S. FIG.

  When the label supply reel 11 is intermittently rotated in the direction of arrow A by a motor (not shown), the separator S to which the label L is attached is fed out.

  The peel plate 12 is formed of, for example, a metal plate that has been subjected to a surface treatment for improving slipperiness. The peel plate 12 is arranged around the label receiving position α. The separator S with the label L fed from the label supply reel 11 is reversed in the moving direction while being in sliding contact with the edge portion of the peel plate 12. Thus, when the separator S moves in the reverse direction, as shown in FIG. 2B, the label L adhered to the separator S with a weak adhesive force or electrostatic force peels off from the moving separator S, and the label At the receiving position α, labels L are supplied one by one in the direction of arrow C. As shown in FIG. 1, the separator S from which the label L has been peeled is taken up by a separator take-up reel 13 that rotates in the direction of arrow B in synchronization with the label supply reel 11.

  As shown in FIG. 3, the label L supplied by the manufacturing system 1 of the present embodiment is made of, for example, a resin made by injection molding, extrusion molding, blow molding, vacuum molding, pressure molding, injection blow molding, or the like. The container C is integrally attached on the outer peripheral surface of the trunk portion. Although not shown, the label L is preprinted with the product name, design, etc. of the contents to be filled in the container C. The label L includes a label base material, a design printing layer formed on the front surface and / or back surface of the label base material, and an adhesive layer formed on the outermost back surface of the label base material. The label base material is formed from various sheets such as a synthetic resin sheet, paper, synthetic paper, a foamed resin sheet, and a nonwoven fabric, or a laminate thereof, a laminated sheet in which functional layers such as a metal foil are laminated, and the like. The separator S is made of a flexible sheet material, and examples of the sheet material include synthetic resin sheets, synthetic paper, and paper. The adhesive layer is formed from a heat-sensitive adhesive, and in the case of injection blow molding, it is preferable to use one that is activated in the range of 60 ° C to 70 ° C. Examples of the contents filled in the container C include shampoo, rinse, detergent, beverage, cosmetics, and medicine. Examples of the molded body include various other shaped containers, cases, covers, trays, and the like.

  Referring again to FIG. 1, the label transport device 15 includes a suction plate 20, a plate moving device 30, a photographing device 40, and a control device 50. The suction plate 20 stands by at the label receiving position α. The suction plate 20 receives the single label L supplied from the label supply device 10 by suction. The suction plate 20 that has received the label L moves to the label photographing position β by driving the plate moving device 30. In this embodiment, the label receiving position α and the label photographing position β are located on the same plane along the horizontal direction and the vertical direction. Therefore, the suction plate 20 is configured to be movable from the label receiving position α to the label photographing position β along the vertical direction and the horizontal direction by being driven by the plate moving device 30.

  FIG. 4 is a perspective view showing a state when the suction plate 20 that sucks and holds the label L is moved to the label photographing position β. As shown in FIG. 4, a number of suction holes 25 are formed in the label suction surface 24 of the suction plate 20. These suction holes 25 are connected to a negative pressure source via an opening / closing valve (not shown). The operation of the opening / closing valve is controlled in accordance with a command from the control device 50. Therefore, until the suction plate 20 receives the label L at the label receiving position α, moves to the label photographing position β in that state, and further moves to the label delivery position γ as described later, the opening / closing valve controls the control device 50. Is opened. As a result, the suction plate 20 can move with the label L sucked and held.

  As shown in FIGS. 1 and 4, the imaging device 40 of the label transport device 15 is disposed at a position facing the suction plate 20 that has moved to the label imaging position β and stopped once. The imaging device 40 can be suitably configured by, for example, a camera, a video camera, or the like. As shown in FIG. 4, the label L is sucked by the suction plate 20 in a state in which a part of one side in the horizontal direction protrudes from the label suction surface 24 of the suction plate 20 without protruding in the vertical direction. Photographed by the photographing device 40. In this example, the case where the label L is sucked by the suction plate 20 without protruding in the vertical direction from the label suction surface 24 of the suction plate 20 with a part of one side in the horizontal direction protruding is described. However, the label L may be sucked to the suction plate 20 in a state where a part of one side in the vertical direction and a part of one side in the horizontal direction protrude from the label suction surface 24 of the suction plate 20. The configuration may be such that it does not protrude from the label suction surface 24. An image photographed by the photographing device 40 is transmitted to the control device 50. The control device 50 has a function of detecting the suction holding position of the label L on the suction plate 20 from the photographed image and calculating a deviation of the suction holding position of the label L from the label reference position. Then, the control device 50 calculates the amount of movement of the suction plate 20 to a label delivery position γ, which will be described later, based on the amount of deviation, and controls the driving of the plate moving device 30. Details of the configuration of the plate moving device 30 and the calculation of the shift amount in the control device 50 will be described later.

  Referring again to FIG. 1, the suction plate 20 that has finished photographing the label suction holding position at the label photographing position β moves to the label delivery position γ by driving the plate moving device 30. In this embodiment, the label delivery position γ is located on the same plane along the horizontal and vertical directions as the label shooting position β. Therefore, in the manufacturing system 1 of the present embodiment, the label receiving position α, the label photographing position β, and the label delivery position γ are all arranged on the same plane along the horizontal direction and the vertical direction. Yes. By arranging the positions α, β, and γ in this manner, the plate moving device 30 that moves the suction plate 20 only needs to have a two-way moving mechanism in the vertical direction and the horizontal direction. There are advantages that can be made. However, the present invention is not limited to this, and the plate moving device 30 moves the suction plate 20 in the third direction orthogonal to the vertical direction and the horizontal direction, that is, the front-rear direction corresponding to the up-down direction in FIG. A mechanism may be provided. In this case, at least two of the label receiving position α, the label photographing position β, and the label delivery position γ may be arranged shifted in the front-rear direction, and the degree of design freedom of the system is increased accordingly.

  As shown in FIG. 1, the label L transported to the label delivery position γ by the suction plate 20 of the label transport device 15 is delivered to the inserter 60. The inserter 60 can receive the label L by sucking and holding it from the suction plate 20. After that, the inserter 60 is driven by the inserter moving device 56 and transports the label L to the label insert position δ of the mold 55 waiting in the open state. The inserter 60 is placed so that the label L is brought into contact with the inner wall surface of the mold 55. The label L made of a thin resin film is placed in a state where it is securely attached to the inner wall of the mold 55 by suction.

  In the injection blow molding, a semi-molten parison having a shape like a test tube is then moved downward from the upper side to a position facing the mold 55, and the other mold (not shown) is closed and placed in the parison. Compressed air is blown. Thereby, a label adhere | attaches on a container surrounding wall, and the container C as shown in FIG. 3 will be blow-molded.

  Next, the plate moving device 30 of the label conveying device 15 will be described in detail with reference to FIG. FIG. 5A is a schematic plan view showing a moving mechanism of the plate moving device 30 for moving the suction plate 20, and FIG. 5B shows the moving mechanism viewed from the direction of arrow D in FIG. It is a model side view at the time. The plate moving device 30 includes a horizontal direction moving mechanism 70, a vertical direction moving mechanism 80, and a rotational direction moving mechanism 90.

  As shown in FIG. 5A, the horizontal movement mechanism 70 includes a horizontal movement servomotor 71, a horizontal movement ball screw 72, and a horizontal movement stage 73. The horizontal moving ball screw 72 includes a screw shaft 75 and a nut 76 screwed into the screw shaft 75. The screw shaft 75 is connected to the output shaft 77 of the horizontal movement servomotor 71 via a coupling 78. The horizontal movement ball screw 72 and the horizontal movement servomotor 71 are fixed to a fixed frame (not shown). A nut 76 screwed to the screw shaft 75 is fixed to the horizontal movement stage 73. As a result, when the output shaft 77 of the horizontal movement servomotor 71 rotates in the direction of arrow E, the horizontal movement stage 73 moves in the horizontal direction indicated by arrow F via the nut 76 screwed to the screw shaft 75. It is like that.

  As shown in FIGS. 5A and 5B, the vertical direction moving mechanism 80 is installed on the horizontal direction moving stage 73. The vertical movement mechanism 80 includes a vertical movement servomotor 81, a vertical movement ball screw 82, and a vertical movement stage 83. The vertically moving ball screw 82 includes a screw shaft 85 and a nut 86 screwed into the screw shaft 85. The screw shaft 85 is connected to an output shaft 87 of the vertical direction moving servo motor 81 via a coupling 88. A nut 86 screwed to the screw shaft 85 is fixed to the vertical movement stage 83. Further, the vertical direction moving stage 83 has a rail guide 54 for guiding a rail 53 extending along the vertical direction on the horizontal direction moving stage 73, and can be slid along the extending direction of the rail guide 54. It is configured. As a result, when the output shaft 87 of the vertical movement servomotor 81 rotates in the direction indicated by the arrow G, the vertical movement stage 83 is moved onto the horizontal movement stage 73 via the nut 86 screwed to the screw shaft 85. Are moved in the vertical direction indicated by an arrow H in FIG.

  Further, a rotational direction moving mechanism 90 is disposed on the vertical direction moving stage 83. The rotation direction moving mechanism 90 includes a rotation direction moving servo motor 91 fixed on the vertical direction moving stage 83 and a rotation direction moving stage 93 fixed to the output shaft of the servo motor 91. A suction plate 20 for sucking and holding the label L is fixedly arranged on the rotation direction moving stage 93. Accordingly, when the output shaft of the rotation direction moving servo motor 91 rotates in the direction indicated by the arrow I, the rotation direction moving stage 93 to which the suction plate 20 is attached can be rotated with respect to the vertical direction moving stage 83.

  Since the plate moving device 30 is configured in this way, the suction plate 20 moves in the horizontal direction by driving the horizontal movement servomotor 71, and moves in the vertical direction by driving the vertical movement servomotor 81, It can be rotated by driving the servo motor 91 for rotation direction movement. The drive of each servo motor 71, 81, 91 is controlled by the control device 50 described in detail below.

  Next, referring to FIG. 6 and FIG. 7, the control device 50 of the label transport device 15 of the present embodiment, and the correction amount of the label suction holding position with respect to the label reference position on the suction plate 20 by the control device 50 are corrected. Will be described. FIG. 6 is a functional block diagram showing the control device 50. FIG. 7 is a schematic diagram illustrating an example of an image captured by the imaging device 40.

  The control device 50 can be configured by a computer, for example. As shown in FIG. 6, the control device 50 includes a horizontal direction deviation calculation unit 41, a vertical direction deviation calculation unit 42, a rotation direction deviation calculation unit 43, a horizontal direction movement control unit 45, a vertical direction movement control unit 46, and a rotation direction movement. A control unit 47 and a storage unit 48 are included. The horizontal direction deviation calculation unit 41, the vertical direction deviation calculation unit 42, and the rotation direction deviation calculation unit 43 constitute a deviation calculation unit, and are a horizontal direction movement control unit 45, a vertical direction movement control unit 46, and a rotation direction movement control unit. 47 constitutes a moving device control unit.

  As shown in FIG. 6, the control device 50 exchanges signals with the imaging device 40 in both directions. Further, the control device 50 receives a signal from the plate pressure sensor 27 that detects the pressure with which the suction plate 20 sucks the label L. The control device 50 receives a signal from the imaging device 40 or the plate pressure sensor 27 and controls the movement of the horizontal direction movement mechanism 70, the vertical direction movement mechanism 80, and the rotation direction movement mechanism 90, and also as described below. Based on the signal from the plate pressure sensor 27, the photographing of the photographing device 40 is controlled.

  When receiving a signal representing a photographed image from the photographing device 40, the horizontal direction deviation calculating unit 41 calculates a horizontal direction deviation amount of the actual label suction holding position with respect to the label reference position on the suction plate 20. Then, the horizontal movement control unit 45 controls the horizontal movement distance of the horizontal movement mechanism 70 based on the amount of horizontal deviation.

  Similarly, when receiving a signal representing a photographed image from the photographing device 40, the vertical direction deviation calculating unit 42 calculates the amount of vertical deviation of the actual label suction holding position with respect to the label reference position on the suction plate 20. Then, the vertical movement control unit 46 controls the vertical movement distance of the vertical movement mechanism 80 based on the vertical deviation amount.

  In addition, when the rotation direction deviation calculation unit 43 receives a signal representing a photographed image from the photographing apparatus 40, the rotation direction deviation calculation unit 43 calculates a rotation direction deviation amount of the actual label suction holding position with respect to the label reference position on the suction plate 20. Then, the rotation direction movement control unit 47 controls the rotation direction movement distance of the rotation direction movement mechanism 90 based on the rotation direction deviation amount.

  The control device 50 receives a signal from the plate pressure sensor 27 at the label receiving position α and determines whether or not the suction plate 20 is holding the label L by suction. If the determination is affirmative, the control device 50 moves the suction plate 20 from the label receiving position α (see FIG. 1) to the label photographing position β. The distance that the suction plate 20 moves from the label receiving position α to the label photographing position β is determined. As a result, the control device 50 can accurately determine the timing at which the suction plate 20 reaches the label photographing position β, and when it is determined that the suction plate 20 has reached the label photographing position β, the photographing device 40 performs photographing.

  Furthermore, the control device 50 can specify the pressure at which the inserter 60 sucks the label L based on a signal from an inserter pressure sensor (not shown). If it is determined that the delivery of the label L from the suction plate 20 to the inserter 60 is completed based on the specified pressure, the inserter 60 is moved toward the mold 55 and the suction plate 20 is moved from the label delivery position γ to the label. Move to receiving position α.

  Next, with reference to FIG. 7, a method for calculating the amount of deviation of the suction holding position of the label L with respect to the label reference position on the suction plate 20 in the deviation calculation unit will be described. FIG. 7 is a schematic diagram illustrating an example of a captured image 65 captured by the imaging device 40. In FIG. 7, a dotted line x indicates coordinates corresponding to the horizontal direction in the captured image 65, and a dotted line y indicates y coordinates corresponding to the vertical direction in the captured image 65. Moreover, 0 shows the origin of x coordinate and y coordinate.

  When the label L is sucked and held by the suction plate 20 without displacement, the label L is arranged at the image reference position on the captured image 65, the lower left corner is located at the origin, and the longitudinal direction is the positive direction of the y axis. The width direction extends in the positive direction of the x-axis.

  Each shift calculation unit 41, 42, 43 shown in FIG. 6 specifies the label image position in the captured image 65 based on two specific points of the label image. Specifically, the horizontal direction deviation calculation unit 41 calculates the horizontal direction image deviation amount a and its direction in the captured image 65 based on the image reference position and the specified label image position. Since the relative position of the imaging device 40 with respect to the suction plate 20 is determined in advance, the horizontal image shift amount a on the captured image 65 and its direction are the horizontal shift amount of the label suction holding position with respect to the label reference position of the suction plate 20. And one-to-one corresponding to the direction. The horizontal direction shift calculation unit 41 calculates the horizontal direction shift amount and the direction of the suction holding position of the label L with respect to the label reference position of the suction plate 20 based on the horizontal image shift amount a on the captured image 65 and the direction thereof. To do.

  In a state where the label L is sucked and held by the suction plate 20 without deviation, the horizontal movement amount by which the suction plate 20 moves from the label photographing position β to the label delivery position γ is determined in advance. The horizontal deviation calculation unit 41 has a label deviation from the amount of horizontal movement in a state where there is no label deviation, the amount of horizontal deviation of the label suction holding position with respect to the label reference position of the suction plate 20 and the direction thereof. In this case, the horizontal movement amount of the suction plate 20 when the suction plate 20 moves from the label photographing position β to the label delivery position γ is calculated.

  Similarly, the vertical direction deviation calculation unit 42 moves in the vertical direction from the label photographing position β to the label delivery position γ of the suction plate 20 in a state where there is no label deviation and the vertical direction image deviation amount b in the photographed image 65. Based on the amount, the vertical movement amount of the suction plate 20 when the suction plate 20 moves from the label photographing position β to the label delivery position γ is calculated.

  Further, the rotation direction deviation calculation unit 43 rotates in the rotation direction from the label photographing position β to the label delivery position γ of the suction plate 20 in a state where there is no label deviation and the rotation direction image deviation amount θ in the photographed image 65. Based on the above, the rotational movement amount of the suction plate 20 when the suction plate 20 moves from the label photographing position β to the label delivery position γ is calculated. Sets the amount of movement in the rotational direction when there is no label displacement to zero.

  Since the label L on the suction plate 20 moves to a predetermined label delivery position γ of the inserter 60, the amount of movement of the suction plate 20 to the label delivery position γ is the label suction holding position with respect to the label reference position of the suction plate 20 It fluctuates depending on the amount of deviation and the direction of deviation.

  In response to the amount of shift of the label suction holding position on the suction plate 20 with respect to the label reference position on the suction plate 20 calculated by the shift calculation units 41, 42, 43, the movement control units 45, 46, 47 receive the plate moving device 30. As the label L moves to a predetermined label delivery position γ of the inserter 60, the horizontal direction deviation amount, the vertical direction deviation amount, and the rotational direction deviation amount are corrected.

  Specifically, the horizontal movement control unit 45 shown in FIG. 6 controls the horizontal movement mechanism 70 based on the horizontal movement amount of the suction plate 20 when there is a label shift calculated by the horizontal shift calculation unit 41. Thus, the suction plate 20 is moved in the horizontal direction by the horizontal movement amount. At this time, the horizontal movement control unit 45 precisely moves the suction plate 20 in the horizontal direction by the horizontal movement amount by pulse-controlling the rotation speed of the horizontal movement servomotor 71.

  Similarly, the vertical direction movement control unit 46 controls the vertical direction movement mechanism 80 based on the vertical direction movement amount of the suction plate 20 when there is a label deviation calculated by the vertical direction deviation calculation unit 42. The suction plate 20 is moved in the vertical direction by the vertical movement amount. The vertical movement control unit 46 precisely moves the suction plate 20 in the vertical direction by the vertical movement amount by pulse-controlling the number of rotations of the vertical movement servomotor 81.

  Further, the rotation direction movement control unit 47 controls the rotation direction movement mechanism 90 based on the amount of movement in the rotation direction of the suction plate 20 when there is a label deviation calculated by the rotation direction deviation calculation unit 43, so that the suction plate 20 is moved in the rotation direction by the amount of movement in the rotation direction. The rotation direction movement control unit 47 precisely moves the suction plate 20 in the rotation direction by the rotation direction movement amount by pulse-controlling the rotation number of the rotation direction movement servomotor 91.

  Subsequently, the operation of the manufacturing system 1 having the above-described configuration will be described with reference to FIGS. FIG. 8 is a schematic perspective view when the suction plate 20 is moved to the label receiving position α and the state in which the label receiving operation is performed is viewed from the back side of the suction plate 20. FIG. 9 is a schematic perspective view when the suction plate 20 that sucks and holds the label L moves to the label photographing position β and the state where the label L is photographed is viewed from the back side of the suction plate 20. is there. FIG. 10 shows the state where the suction plate 20 holding the label L is moved to the label delivery position γ and the label L is delivered to the inserter 60 (see FIGS. 8 and 9). It is a model perspective view when it sees from.

  The storage unit 48 of the control device 50 stores in advance position information of the label receiving position α on the three-dimensional space. Further, the control device 50 can recognize the timing at which a predetermined portion of the label L is peeled from the separator S from the moving speed of the separator S, the label interval on the separator S, and the like. The control device 50 opens an opening / closing valve that allows the suction hole 25 to communicate with the negative pressure source at the timing, and the suction plate 20 is separated from the separator S at the label receiving position α at the peripheral portion of the label L (the separation of the label L). A portion including at least a portion of the portion) is sucked. The suction plate 20 receives the label L from the separator S in this way. In this embodiment, the suction plate 20 sucks the label L at the predetermined label receiving position α at the timing when the control device 50 determines that the predetermined portion of the label L has been peeled from the separator S. The amount of deviation of the label suction holding position with respect to the label reference position can be reduced. Further, since the suction plate 20 sucks the peripheral portion of the peeled portion of the label L peeled from the separator S at a good timing, the delivery of the label L from the separator S to the suction plate 20 can be performed smoothly. When the label L peeled from the separator S is sucked by the suction plate 20, the delivery of the label L to the suction plate 20 is more stable by blowing air toward the label L from the position opposed to the suction plate 20. Can be done. Thus, it becomes easier to obtain the suction vacuum by pressing the label L against the suction plate 20 side by the wind of air. The air pressure, wind force, and timing can be appropriately set according to the size, thickness, material, and the like of the label L. For example, electrostatic removal air may be used as the air.

  Subsequently, when the control device 50 determines that the suction plate 20 has sucked the label L based on a signal from the plate pressure sensor 27, the control device 50 controls the plate moving device 30 as shown in FIG. Is moved to the label photographing position β. Note that it is preferable that the suction plate 20 can reach the label photographing position β from the label receiving position α only by moving in the horizontal direction because the cycle time of product manufacture can be shortened.

  The storage unit 48 of the control device 50 stores in advance position information of the label photographing position β on the three-dimensional space. Further, the distance that the suction plate 20 moves from the label receiving position α to the label photographing position β is determined. The control device 50 causes the photographing device 40 to perform label photographing at the timing when the suction plate 20 reaches the label photographing position β.

  Thereafter, the deviation calculation units 41, 42, and 43 of the control device 50 calculate the deviation amount of the label suction holding position with respect to the label reference position on the suction plate 20 based on the photographed image 65 photographed by the photographing apparatus 40 by the above-described method. To do. Further, as shown in FIG. 10, the movement control units 45, 46, and 47 move the label L on the suction plate 20 to a predetermined label delivery position γ so as to correct the shift amount.

  A number of suction holes (not shown) are formed on the label suction surface of the inserter 60. These suction holes are connected to a negative pressure source via an opening / closing valve (not shown). The operation of the opening / closing valve is controlled in accordance with a command from the control device 50.

  When the control device 50 determines that the suction plate 20 has reached the label delivery position γ, the control device 50 opens the open / close valve to connect the suction hole of the inserter 60 to the negative pressure source, and causes the inserter 60 to suck the label L. When the control device 50 determines that the inserter 60 sucks and holds the label L based on the pressure with which the inserter 60 sucks the label L, the control device 50 closes the open / close valve that communicates the suction hole 25 of the suction plate 20 with the negative pressure source. The suction of the label L on the plate 20 is finished. The suction plate 20 delivers the label L to the inserter 60 in this way.

  As shown in FIGS. 8 and 9, in this embodiment, the inserter 60 has two label holding portions 61, and the inserter 60 attaches two labels L to two different molds 55 at a time. Move. Each label holding portion 61 has, for example, suction portions 69 at two upper and lower locations, and these two suction portions 69 suck two locations in the vertical direction of the label L. The suction part 69 can be constituted by a suction hole or a suction cup that can communicate with a vacuum source. In the example shown in FIG. 10, the state where the second label L is delivered to the inserter 60 at the label delivery position γ is illustrated. After the first label L is sucked and held, the control device 50 moves the inserter 60 in the horizontal direction by a predetermined distance. When the second label L is delivered to the inserter 60, the inserter 60 is moved toward the mold 55, and the suction plate 20 is moved to the label receiving position α. FIG. 10 shows the case where the label delivery position γ is positioned above the label shooting position β in the vertical direction. For example, the label delivery position γ exists at the same height as the label shooting position β. May be.

  As described above, according to the manufacturing system 1 of the present embodiment, the plurality of labels L are detachably attached so as to be adjacent to each other in the extending direction of the strip-shaped separator S. When sucking the label L, two labels L are not removed from the separator S. Therefore, for example, there is no need to perform a surface treatment for improving the dispersibility in order to suppress the double removal of the label L, and the inserter can be stably inserted even if the label L is relatively thin. 60. Therefore, the manufacturing cost and manufacturing man-hour of the label L can be reduced.

  In addition, the label L is moved to a predetermined label delivery position γ by controlling the plate moving device 30 after the amount of deviation of the label suction holding position on the suction plate 20 from the reference position on the suction plate 20 is calculated. In the meantime, the shift amount is corrected. Therefore, since the positioning of the label L and the delivery of the label L to the inserter 60 are performed at the same time, compared with the case where the inserter 60 sucks and holds the label L after positioning the label L, the mold 55 The position of the label L is difficult to shift, and the position accuracy of the label L on the mold 55 is easily increased. Further, since the positioning of the label L and the delivery of the label L to the inserter 60 are performed simultaneously, the time required for the alignment and transfer of the label L can be shortened.

  Further, the deviation calculation unit calculates the deviation amount of the label suction holding position with respect to the label reference position on the suction plate 20 based on the deviation amount of the label image position with respect to the image reference position of the photographed image 65 photographed by the photographing device 40. The amount of deviation of the label suction holding position can be calculated accurately, and the label L can be accurately positioned.

  In addition, the shift calculation unit determines the shift amount of the label image position with respect to the image reference position based on the horizontal image shift amount a, the vertical image shift amount b, and the rotation image shift amount θ of the label image position with respect to the image reference position. Therefore, the amount of deviation can be calculated easily and precisely.

  The present invention is not limited to the above-described embodiment and its modifications, and various improvements and modifications can be made within the matters described in the claims of the present application and their equivalent ranges.

  For example, in the above-described embodiment, the case where the horizontal movement mechanism 70 or the vertical movement mechanism 80 includes the servo motors 71 and 81 and the ball screws 72 and 82 has been described, but the horizontal movement mechanism or the vertical movement mechanism may be a ball screw. Instead, a configuration having a rack and pinion mechanism may be used. Moreover, although the case where the inserter 60 carries two labels at a time has been described, the inserter may carry any number of labels at a time.

  Further, in the above-described embodiment, after the amount of deviation of the label suction holding position on the suction plate 20 with respect to the label reference position on the suction plate 20 is calculated, the suction plate is based on the movement distance calculated based on the amount of deviation. The case where 20 moves directly from the label suction holding position to a predetermined label delivery position γ has been described. However, after the amount of shift of the label suction holding position on the suction plate relative to the label reference position on the suction plate is calculated, the position of the suction plate is corrected, and then the suction plate is moved to a predetermined label delivery position γ. May be.

  Further, the inserter may transfer one label only to one mold, or may attach only one label to one molded body. Alternatively, the inserter has a front side label inserter and a back side label inserter, the front side label inserter transfers the front side label to one mold, and the back side label inserter closes the other mold and the other mold. The backside label may be transferred to the mold. In this way, two labels may be attached to one molded body. In this case, it is preferable to install two manufacturing systems. Alternatively, the inserter may attach three or more labels to one molded body.

  DESCRIPTION OF SYMBOLS 1 Labeled molded object manufacturing system, 10 Label supply apparatus, 15 Label conveyance apparatus, 20 Suction plate, 30 Plate moving apparatus, 40 Imaging apparatus, 41 Horizontal direction deviation calculation part, 42 Vertical direction deviation calculation part, 43 Rotation direction deviation Calculation unit, 45 horizontal direction movement control unit, 46 vertical direction movement control unit, 47 rotation direction movement control unit, 50 control device, 55 mold, 60 inserter, 65 photographed image, 70 horizontal direction movement mechanism, 71 for horizontal direction movement Servo motor, 72 Horizontal movement ball screw, 80 Vertical movement mechanism, 81 Vertical movement servo motor, 82 Vertical movement ball screw, 90 Rotation direction movement mechanism 91 Rotation direction movement servo motor, L label, S separator, a Horizontal image shift amount, b Vertical image shift amount, θ rotational image shift amount, α label receiving position, β label shooting position, γ label delivery position.

Claims (6)

A production system for a labeled molded body that inserts a label into a mold to produce a molded body with an in-mold label,
An inserter for delivering the label at a predetermined label delivery position and inserting the label into the mold;
A label supply device that supplies the plurality of labels, which are attached to be peelable so as to be adjacent to each other in the extending direction of the strip-shaped separator, one by one;
A label transport device that transports the label supplied by the label supply device to the label delivery position;
The label conveying device is
A suction plate for sucking and holding the label supplied by the label supply device;
A plate moving device for moving the suction plate;
A deviation calculating unit that calculates a deviation amount of the label suction holding position on the suction plate with respect to a label reference position on the suction plate, and the label is moved after the deviation amount is calculated by controlling the plate moving device. A control device having a moving device control unit for correcting the shift amount while moving to a label delivery position;
A system for manufacturing a labeled molded body. In the manufacturing system of the labeled molded object according to claim 1,
The label transport device has a photographing device that photographs at least a part of the label on the suction plate in a state where the suction plate is arranged at a predetermined label photographing position,
The deviation calculating unit calculates the deviation amount of the label suction holding position on the suction plate based on the image deviation amount of the label image position with respect to the image reference position of the photographed image of the photographing device. Manufacturing system. In the manufacturing system of the labeled compact according to claim 2,
The shift calculation unit is configured to set a horizontal position of the label suction holding position on the suction plate based on a horizontal image shift amount, a vertical image shift amount, and a rotation image shift amount of the label image position with respect to the image reference position. Calculate the direction deviation amount, vertical direction deviation amount, and rotational direction deviation amount,
The moving device control unit controls the plate moving device so as to correct the horizontal direction displacement amount, the vertical direction displacement amount, and the rotation direction displacement amount while the label moves to the label delivery position. Molded body manufacturing system. In the manufacturing system of the labeled fabrication object according to claim 3,
The plate moving device is:
A horizontal movement servomotor and a horizontal movement ball screw for moving the suction plate in the horizontal direction;
A servo motor for vertical movement and a ball screw for vertical movement for moving the suction plate in the vertical direction;
A servo motor for rotation for rotating the suction plate;
A system for manufacturing a labeled molded body. In the manufacturing system of the labeled fabrication object according to any one of claims 1 to 4,
The control device recognizes a timing at which a predetermined portion of the label is peeled from the separator based on a moving speed of the separator and a label interval of the label attached to the separator, and at the timing, the controller applies to the suction plate. A system for manufacturing a labeled molded body, wherein a portion including at least a part of the predetermined portion of the label is sucked at a predetermined label receiving position. A method for producing a molded article with a label, wherein a label is inserted into a mold to produce a molded article with an in-mold label,
A label supply step of supplying a plurality of the labels, which are attached so as to be peelable so as to be adjacent to each other in the extending direction of the strip-shaped separator;
A label suction holding step for sucking and holding the labels supplied one by one with a suction plate;
A deviation amount calculating step for calculating a deviation amount of the label suction holding position on the suction plate with respect to the label reference position on the suction plate;
A plate moving step for moving the suction plate so as to correct the shift amount while the label moves to a predetermined label delivery position where the label is transferred to the inserter after the shift amount is calculated;
A mold insert step in which the label is inserted into the mold by the inserter;
A method for producing a labeled molded body, comprising:

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