JP2015205713A - Label sticking device, and packaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label sticking device capable of restoring a label adsorption part to a correct position reliably even when the label adsorption part is restored (restarted) from a state of being displaced from an original position.SOLUTION: A label sticking device adsorbs and holds a label by a label adsorption part C1, rotates the label adsorption part C1 horizontally, and sticks the label to a product at a predetermined angle. The label sticking device comprises: a drive mechanism for rotating the label adsorption part C1 in a horizontal plane; a rotary member 93 having a detected part 93b rotating in conjunction with the rotation of the drive mechanism; a first detection part 91 for detecting the detected part 93b at an original position related to the rotation of the label adsorption part C1; a second detection part 92 for detecting the detected part 93b at an end position; and a control unit (CPU) for acquiring rotational position information of the label adsorption part C1. The CPU drives the drive mechanism and rotates the label adsorption part C1 until the detected part 93b is detected by the first detection part 91 or the second detection part 92.

Description

  The present invention relates to a label sticking device and a packaging device.

  There are known a label sticking device for sticking a sheet-like label to a sticking object, and a packaging device including the label sticking device (for example, see Patent Document 1).

  The applicator (label sticking part) in the packaging device has a label adsorbing part. The label adsorption unit is rotationally controlled in a horizontal plane by driving a motor according to the direction of the label. In general, one detection sensor that detects that the label suction portion is located at the origin position in the rotation of the label suction portion is provided, and the rotation of the label suction portion is controlled based on the origin position.

  For example, when the emergency stop (emergency stop) or power supply is cut (shut off) while the applicator label suction part is rotationally controlled, the applicator label suction part may stop during the rotation control. It becomes. When returning (restarting), if the applicator label suction part stops at a position deviated from the origin position in its rotation (position not recognized by the control part), the applicator label suction part is correctly controlled. Therefore, it is necessary to return to the origin position.

JP 2012-153414 A

  In the general label sticking apparatus described above, when returning (restarting) the label adsorbing portion of the applicator from the origin position, for example, the applicator label adsorbing portion is rotated clockwise or counterclockwise. Then, control is performed to return the label suction portion of the applicator to the origin position. However, if the label suction part is rotated once in the direction in which the driving wire is twisted or wound, the twisted wire or the wire is wound by the rotated label suction part, and the wire breaks or contacts. There is a risk of developing problems such as causing defects.

  The present invention has been made in view of the above-described problems, and even when the label suction unit is returned (restarted) from a state of being deviated from the origin position, the label suction unit is reliably returned to the correct position. Providing a labeling device that can be used, even in the event of an emergency stop (emergency stop) or sudden power cut, without causing wire breakage or poor contact due to wire twisting or winding An object of the present invention is to provide a label sticking device capable of returning the label adsorbing portion to the correct position, and to provide a packaging device including the label sticking device.

In order to achieve such an object, the label sticking device of the present invention comprises at least the following configuration.
A label affixing device that adsorbs and holds a label located at an issuing port of a label issuing unit at a label adsorbing unit, horizontally rotates the label adsorbing unit, and affixes the label to a product at a predetermined angle,
A drive mechanism for rotating the label suction portion in a horizontal plane;
A rotating member including a detected portion that rotates in conjunction with rotation of the drive mechanism;
A first detection unit that detects the detected portion of the rotating member at an origin position related to rotation of the label suction unit;
A second detection unit for detecting the detected portion of the rotating member at a terminal position related to the rotation of the label suction unit;
A control unit that acquires rotational position information of the label suction unit based on the origin position or the end position based on driving of the label suction unit by the drive mechanism;
The control unit performs control to drive the drive mechanism and rotate the label adsorption unit until the first detection unit or the second detection unit detects the detected unit. To do.

  Moreover, the packaging apparatus of this invention has the label sticking apparatus of the said this invention, It is characterized by the above-mentioned.

According to the present invention, there is provided a label sticking device capable of reliably returning a label suction portion to a correct position even when the label suction portion is returned (restarted) from a state of being deviated from the origin position. be able to.
In addition, according to the present invention, even when an emergency stop (emergency stop) or suddenly power is cut off, the rotation of the label suction portion is minimized, and the wire is twisted or wound, or the wire is poorly contacted. It is possible to provide a label sticking device that can return the label suction portion to the correct position without causing disconnection or disconnection.
Moreover, according to this invention, a packaging apparatus provided with the said label sticking apparatus can be provided.

The longitudinal section side view which shows an example of a packaging apparatus provided with the label sticking apparatus which concerns on embodiment of this invention. The expanded side view which shows the label sticking apparatus part which concerns on embodiment of this invention. The figure for demonstrating a rotation member, a detection part (sensor), etc. FIG. The schematic diagram for demonstrating a label adsorption | suction part, a rotation member, a detection part (sensor), etc. FIG. The block diagram which shows an example of the electrical constitution of a packaging apparatus provided with a label sticking apparatus. The figure which shows an example of an adsorption | suction part drive part. The flowchart which shows an example of operation | movement of a label sticking apparatus. The flowchart which shows an example of the operation | movement regarding an origin return.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The embodiment of the present invention includes the contents shown in the drawings, but is not limited to this. In the following description of each drawing, parts that are common to the parts that have already been described are assigned the same reference numerals, and duplicate descriptions are partially omitted.

  FIG. 1 is a longitudinal side view showing an example of a packaging device including a label sticking device according to an embodiment of the present invention. FIG. 2 is an enlarged side view showing a label attaching device portion.

The packaging device is a stretch wrapping machine A (stretch film wrapping machine), a label issuing unit B (weighing label printer), and a label applying device for receiving a label issued from the label issuing unit B and applying it to a package (product). C.
The label issuing unit B is disposed on the upper side of the package discharge path (heat seal unit) 10 in the stretch wrapping machine A, and the label sticking device C is disposed above the discharge path.

  In the stretch wrapping machine A, a product placing part 13 for placing the product G is placed in front of the machine frame 14, and the elevator 2 in which the product G placed on the product placing part 13 is provided inside the machine frame by the pusher conveyor 1. Transport to. In addition, the case where goods G are conveyed in the state accommodated in the tray which is a container is illustrated, and the goods mounting part 13 is comprised as a weighing pan of the measurement part 15, The near side of this goods mounting part 13 In the vicinity, a width detection sensor 17a for detecting the lateral width of the product G is provided.

A height detection sensor 17b for detecting the height of the product is provided on the side of the pusher conveyor 1 in the middle of the product conveyance path by the pusher conveyor 1.
A wrapping section 3 is provided above the elevator 2, a film roll 4 is set on the side of the wrapping section 3 (a direction perpendicular to the pusher conveyor), and the film 4 ′ fed out from the film roll 4 is fed into the film feed. Pulled out by the mechanism 5, cut to a predetermined length, and then transferred to the packaging unit 3.

The wrapping portion 3 includes a rear folding member 6 and left and right folding members 7 and 7 ′ which are folded over the film feed mechanism 5 at the end of the film 4 ′ covering the top surface of the product G toward the bottom surface side of the product. A discharge pusher 8 that discharges the packaged package G ′ that is positioned above the members 7 and 7 ′, and a front folding roller 9 is disposed at a front position in the movement direction of the discharge pusher 8.
The film feed mechanism 5 includes a pair of upper and lower endless elastic belts 5a and 5b that sandwich a side end in the width direction of the film, and a clamp plate 5c that presses the lower elastic belt 5b toward the upper elastic belt 5a. They are arranged at the front and back with the packaging part 3 in between.

  Further, in front of the front folding roller 9, a discharge path (heat seal portion) 10 for heating and bonding and discharging the overlapping portion of the end of the film folded on the bottom surface side of the product and a discharging means 11 on the front portion thereof. A display operation unit 12 (console unit) is provided on the machine casing 14, and a label issuing unit B (weighing label printer) is provided in the discharge path (heat seal unit) 10 on the side of the discharge path. A label sticking device C is installed above the heat seal unit 10. A product detection sensor 49 is provided on the side of the discharge path (heat seal portion) 10.

In the stretch wrapping machine A, the product G conveyed on the elevator 2 is pushed up with respect to the film 4 ′ stretched on the packaging part 3 by the lift of the elevator 2, and the film 4 ′ covering the upper surface of the product G The end portion is folded to the bottom side of the product G by the rear folding member 6 and the left and right folding members 7 and 7 '.
Next, the product G is pushed horizontally toward the discharge path (heat seal part) 10 by the discharge pusher 8 and the front end of the film 4 ′ is folded to the bottom side of the product G by the front folding roller 9. The overlapping part of the film edge part folded in the side is heat-sealed by the discharge path (heat seal part) 10, and package G 'is obtained.

  The label issuing unit B receives the product G from the unit price set in advance based on the data measured by placing the product G on the weighing pan of the weighing unit 15 of the product placing unit 13 of the stretch wrapping machine A. The price and other product data are printed and issued on a label sheet. This label issuing unit B has a label L that is printed and held substantially horizontally with the printing surface up. An issue port 16 is provided.

The label sticking device C (applicator) for sticking the label held at the label issuing port 16 of the label issuing unit B to the package G ′ is a label adsorbing unit C1 that sucks the label held at the label issuing port 16 And a drive mechanism C2 that moves the label suction unit C1 and a control unit that controls the operation of the label suction unit C1 and the drive mechanism C2.
As shown in FIG. 2, the label suction unit C1 includes a label suction surface 18 that sucks and holds labels, and a suction box unit 19 that is disposed above the label suction surface 18 and generates a suction force on the label suction surface 18. The suction box unit 19 has a negative pressure inside the box as the fan 19a rotates, and a suction force is generated on the label suction surface 18.
Specifically, the label suction unit C1 includes a rotary suction unit 180 near the lower portion of the suction box unit 19. The rotary suction unit 180 is formed in a cylindrical shape, and a label suction surface 18 is formed at the lower end thereof.

  The drive mechanism C2 for moving the label suction part C1 includes a discharge path (heat seal part) 10 through which the label suction part C1 is orthogonal to the conveying direction of the package G ′, that is, the package G ′ is discharged. A first drive mechanism 20 that moves in the width direction of the discharge means 11 that is connected, a third drive mechanism 21 that moves the label suction portion C1 in the vertical direction with respect to the transport surface of the package G ′, and a label suction portion The second suction mechanism 22 is configured to rotate the label suction surface 18 in C1 in a horizontal plane parallel to the conveyance surface of the package G ′.

  The first drive mechanism 20 is fitted into two guide rods 20a that are horizontally fixed to the upper position of the packaging portion 3 of the stretch wrapping machine perpendicularly to the pushing direction of the discharge pusher 8, and the guide rods 20a. And a slidable case 20b, an endless belt 20c arranged in parallel along the guide rod 20a, a stepping motor 20d (horizontal motor M1) for moving the endless belt 20c in the forward and reverse directions, and a pulley 20e. The case 20b is connected and fixed to the endless belt 20c, the guide rod 20a is attached to the machine frame 14 via a bracket, and the case 20b is moved along the guide rod 20a by the operation of the stepping motor 20d.

  The label adsorbing portion C1 is attached to the distal ends of a pair of upper and lower parallel arms 23 and 23 ′ whose base ends are attached to a case 20b moved along the guide rod 20a, and the pair of parallel arms 23 and 23. 'Is supported by the third drive mechanism 21 so as to move the label adsorbing part C1 in the vertical direction with respect to the package G'.

  The pair of parallel arms 23 and 23 'holding the label adsorbing portion C1 can be rotated by two pins 24 and 24' whose base end sides are horizontally mounted at a predetermined interval with respect to the case 20b. The other end side (front end side) of the upper parallel arm 23 is connected to a pin 27 that is movably fitted and mounted in an arc groove 26 of an attachment cylinder 25 that is connected to the upper part of the label suction portion C1. The other end side (front end side) of the lower parallel arm 23 ′ is attached to a rotary shaft 28 that is positioned below the pin 27 and is rotatably mounted on the mounting cylinder 25.

  Accordingly, the label adsorbing portion C1 is swingable in the conveying direction of the package G 'around the rotation shaft 28, and the swing swing range is restricted by the arc groove 26 (swing mechanism). The third drive mechanism 21 is attached to the base end side of the upper parallel arm 23, and the second drive mechanism 21 rotates the label suction surface 18 of the label suction portion C1 around the lower parallel arm 23 'in a horizontal plane. A drive mechanism 22 is attached. Furthermore, an angle maintaining means is provided in the case 20b to maintain the swinging tilt angle when the label suction portion C1 swings.

  In the third drive mechanism 21, a gear 29 is fixed to a pin 24 on which the base end side of the upper parallel arm 23 is supported, and a gear 30 that meshes with the gear 29 and rotates is placed and fixed on the upper surface of the case 20b. The support arm 32 is fixed to the rotating shaft of the motor 31 (upper and lower motor M2), and the support arm 32 is integrally fixed to both sides of the pin 24 projecting outward from the case 20b. It is comprised so that the lower surface of the upper parallel arm 23 currently supported so that rotation may be supported.

  As a result, when the motor 31 rotates, the third drive mechanism 21 rotates the pin 24 via the gear 30 and the gear 29, and the rotation of the pin 24 rotates the support arm 32 in the vertical direction. The parallel arm 23 supported so as to be rotatable with respect to 24 is supported from below by a support arm 32, and is moved up and down in conjunction with the vertical rotation of the support arm 32, and the parallel arm 23 is connected to the support arm 32. It is possible to turn upward about the pin 24 away from the contact.

  As shown in FIG. 2, the second drive mechanism 22 has a gear 33 fixed to one side end of a pin 24 ′ on which the base end side of the lower parallel arm 23 ′ is supported, and meshes with the gear 33. 34 is fixed to the rotating shaft of a motor 35 (rotating motor M3) attached to the outside of the case 20b via a bracket, and a sprocket 36 is fixed to the other end of the pin 24 '. Further, a sprocket 37 is fixed to one end of a rotary shaft 28 that is rotatably mounted on the mounting cylinder 25 fixed to the label suction portion C 1, and a toothed belt 38 extends between the sprocket 37 and the sprocket 36. A gear 39 is fixedly attached to the intermediate portion of the rotary shaft 28, and a gear 40 that meshes with the gear 39 is fixed to a support shaft that engages and supports the label suction surface 18 in an integrally rotating manner. Yes.

  In addition, the origin for rotating the label suction unit C1 in order to correctly control the rotation of the second drive mechanism 22 that rotates the label suction surface 18 in the label suction unit C1 in a horizontal plane parallel to the transport surface of the package. A first detection portion 91 (first sensor) that detects a detected portion 93b (convex portion) provided in the main body portion 93a of the rotation member 93 (disk-shaped member) is provided at a position, and the label adsorption portion C1 rotates. The second detection unit 92 (second sensor) for detecting the detected portion 93b (convex portion) of the rotating member 93 (disk-shaped member) is provided at the end position (see FIGS. 3 and 4). In the vicinity of the second detection unit 92, a stopper as a regulation unit 95 is provided.

For example, when an emergency stop button is pressed during the label application operation or the power is turned off, the label application operation is interrupted.
When the emergency stop is released or the power is turned on, the first drive mechanism 20 and the third drive mechanism 21 are driven to move the label suction portion C1 to the initial position in order to resume the pasting operation. There is a need.
At this time, the second drive mechanism 22 is driven to rotate the label suction surface 18 of the label suction unit C1 in the horizontal plane so as to rotate and return to the original position as the initial position.
Therefore, the first detection unit 91 (first sensor) and the second detection unit 92 (second sensor) can detect the detected portion 93b (convex portion) of the rotating member 93 (disk-shaped member). Try whether or not.
As a result of the detection, when the first detection unit 91 and the second detection unit 92 cannot detect the detected portion 93b (convex portion) of the rotating member 93 (disk-shaped member), the label suction in the label suction portion C1 It is determined that the surface 18 stops at an indefinite position (the convex portion of the rotating member 93 stops at an indefinite position), and the second detection is performed until the first detecting unit 91 detects the convex portion of the rotating member 93. The second drive mechanism 22 is driven from the direction in which the part 92 is positioned toward the first detection part 91, and the label suction surface 18 in the label suction part C1 is rotated in the horizontal plane to return to the origin. By performing this origin return processing, the label can be attached by being rotated to the correct rotation angle.

The second drive mechanism 22 is rotated by a predetermined number of seconds toward the second detection unit 92 in the drive direction (rotation direction), and the second detection unit 92 moves the detected portion 93b (convex portion) of the rotation member 93. When detected, the rotation of the label suction surface 18 in the label suction unit C1 is stopped, the end position on the second detection unit 92 side is set as the origin position, and the desired label angle is rotated from the second detection unit 92 side. May be recalculated, and the label suction surface 18 may be reversely rotated in the horizontal plane based on the calculated rotation angle to position the label at a desired angle (including an angle).
Thereby, since both the 1st detection part 91 side and the 2nd detection part 92 side can be made into an origin position or an end position, label sticking operation can be performed quickly.
In addition, if the detected portion 93b (convex portion) of the rotating member 93 cannot be detected even after rotating the second detecting portion 92 for a predetermined number of seconds, the first detecting portion 91 detects the detected portion 93b of the rotating member 93. You may make it return to an origin by rotating until (convex part) is detected. Thereby, since a quick origin return can be performed, it is possible to quickly shift to the next pasting operation.

FIG. 5 is a block diagram illustrating an example of an electrical configuration of a packaging device including a label sticking device.
The label issuing unit control unit D, which is a measurement label printer control unit, mainly controls the label applicator and the label issuing unit, and is controlled by the CPU 41 as a control unit.
The packaging mechanism control unit E mainly controls the mechanism unit of the stretch packaging machine A and is controlled by the CPU 50.

Next, the label issuing unit control unit D will be described.
The CPU 41 includes a ROM 42, a RAM 43, a display operation unit 12 (console unit), a weighing unit 15, a communication interface circuit 46 (INF), a printing unit 47, a suction unit driving unit 48, and a product detection sensor 49 via a bus 41a. The ROM 42 stores various control programs executed by the CPU 41.
The RAM 43 includes various registers and flags used when the CPU 41 executes the control program in the ROM 42, and a preset data area in which various data is stored in advance for each product.
In the preset data area, “product name”, “unit price”, “barcode”, etc., which are data for price calculation and label printing, corresponding to the product (product number) are stored. Files, tray files, etc. are stored. A description of the details of each file is omitted.

The display operation unit 12 (console unit) includes an operation unit including a keyboard and a touch panel, and a display unit configured by a liquid crystal display. Input of various data and commands or input data based on commands from the CPU 41 is provided. Display, display of preset data, and display of various messages. Therefore, selection of the rotation angle of the label in the present invention can be performed by operating the operation unit of the display operation unit 12.
The weighing unit 15 supplies a weighing signal of the product G placed on the product placing unit 13 to the CPU 41.
The communication interface circuit (INF) 46 is a circuit for communicating various data and commands with the packaging mechanism control unit E.
The printing unit 47 is a label issuing unit (weighing label printer), which includes a thermal printer, prints the product name, price, unit price, barcode, etc. on the label based on a command from the CPU 41 and issues the printed label to the label issuing port. To do.

The suction unit drive unit 48 moves the label suction unit C1 by the drive mechanism C2 described above to suck the label at the label issuing port 16, and then moves it to a predetermined label application position and the direction of the label suction surface 18 Is a mechanism for sticking a label in a predetermined direction to a predetermined position of the product by lowering the label suction portion C1 with respect to the product at a predetermined timing. Details of the suction unit driving unit 48 will be described later.
The product detection sensor 49 is disposed on the side of the discharge path provided with the heat seal portion 10, detects the presence or absence of a package (packaged product) G ′ in the discharge path, and outputs a signal for labeling. If the product is located at the label application location, that is, the discharge path (heat seal portion), the fact is supplied to the CPU 41.

CPU41 as a control part controls each component of a label sticking apparatus centrally. The CPU 41 as a control unit corresponds to a control unit that controls the operation of the label suction unit C1 and the drive mechanism C2.
Specifically, the CPU 41 executes a control program stored in a storage unit such as the ROM 42, thereby realizing the function according to the present invention in a label attaching apparatus as a computer.
The CPU 41 as the control unit is based on the output from the first detection unit 91 or the second detection unit 92 and the drive pulse of the rotation motor M3 (motor 35) of the drive mechanism C2 (second drive mechanism 22). Thus, the rotation position information of the label suction unit C1, specifically the rotation suction unit 180 of the label suction unit C1, is obtained with reference to the origin position or the end position. The CPU 41 stores rotational position information in a storage unit such as the RAM 43.
Further, the CPU 41 controls the rotation by driving the rotation adsorption unit 180 of the label adsorption unit C1 by the drive mechanism C2 based on the rotation position information of the label adsorption unit C1.
Further, when the CPU 41 cannot acquire rotational position information based on the origin position or the end position, until the first detection unit 91 or the second detection unit 92 detects the detected portion 93b (convex portion). Control is performed to drive the rotation motor M3 (motor 35) of the drive mechanism C2 (second drive mechanism 22) to rotate the label adsorption unit C1, specifically, the rotation adsorption unit 180 of the label adsorption unit C1.

Next, the packaging mechanism control unit E will be described. A communication interface circuit 51 (INF), a ROM 52, a RAM 53, an operation unit 54, and a mechanism drive unit 55 are connected to the CPU 50 via a bus 50a.
The communication interface circuit (INF) 51 is a circuit for communicating various data and commands with the label issuing unit control unit D.
The ROM 52 stores a control program executed by the CPU 50.
The RAM 53 has various registers and flag areas used when the CPU 50 executes the control program of the ROM 52, various tables for determining control data based on product shape data (vertical, horizontal, and height). Is remembered.
The operation unit 54 is a switch for starting and stopping the apparatus.

The mechanism driving unit 55 is a circuit for driving each mechanism unit of the packaging machine when packaging is performed. Specifically, the motor 56 (elevator motor) that drives the elevator 2 and the product G are carried in. There are a carry-in motor 57 for driving the pusher conveyor 1, a film transfer motor 58 for driving the film feed mechanism 5, and the like. In addition, although the structure of the packaging machine was demonstrated easily previously, description is abbreviate | omitted about the detail.
The mechanism driving unit 55 is connected to a width detection sensor 17a that detects the width of the product G and a height detection sensor 17b that detects the height of the product G, and supplies detection data to the CPU 50. Yes.

  An example of data and commands exchanged between the label issuing unit control unit D and the packaging mechanism control unit E will be described. A signal is sent from the label issuing unit control unit D to the packaging mechanism control unit E to notify that the weighing of the product placed on the product placing unit 13 is stable, and the label issuing unit control is performed from the packaging mechanism control unit E. One piece of length data (length data from the center of the product to the end in the width direction) and height data are transmitted to part D as data for determining the label affixing position. Is done.

FIG. 6 is a diagram showing details of the configuration of the suction unit drive unit 48 (drive mechanism C2). The horizontal motor M1 drive circuit 59 is a circuit that drives a horizontal motor M1 (stepping motor 20d of the first drive mechanism) that moves the label adsorbing portion C1 horizontally, that is, in a direction orthogonal to the package transport direction. A stepping motor is used as the motor M1. Therefore, the position of the suction portion can be detected by counting the number of driving pulses of the stepping motor (a positive count when rotating right, and a negative count when rotating left).
The horizontal reference position sensor F1 (60) is a sensor that detects that the label suction portion is located at the reference position in the horizontal direction, and the label suction portion is positioned in the horizontal direction based on the count value of the drive pulse from the reference position. Is called.

The vertical motor M2 drive circuit 61 and the vertical reference position sensor F2 (62) are the same as the horizontal motor M1 except that the vertical motor M2 (the motor 31 of the third drive mechanism) moves the label suction portion C1 in the vertical direction. It is the same.
The rotation motor M3 drive circuit 63 and the rotation reference position sensor F3 (64) are motors that cause the rotation motor M3 (the motor 35 of the second drive mechanism) to rotate the label suction portion C1 in a plane parallel to the product discharge path surface. Positioning by the drive pulse of the rotation motor M3 is not the distance but the rotation angle, and is the same as in the case of the horizontal motor M1.
The label sticking sensor F4 (65) is a sensor for detecting that the label is stuck on the package, that is, that the label suction surface 18 of the label suction part is in contact with the package. It is detected that the upper parallel arm is separated from the support arm when a force is applied over a certain level.
The 1st detection part 91 (1st sensor) detects the to-be-detected part of a rotation member in the origin position regarding rotation of a label adsorption | suction part.
The 2nd detection part 92 (2nd sensor) detects the to-be-detected part of a rotation member in the terminal position regarding rotation of a label adsorption | suction part.
The above components are electrically connected to the CPU 41.

FIG. 7 is a flowchart showing an example of the operation of the label sticking apparatus.
An outline of the label pasting process executed by the CPU 41 will be described. Data such as product name, price, unit price, weight, expiration date, and barcode are printed on the label, and when the label is issued to the label issuing port 16, the following processing is executed.

  In step ST1, the label adsorbing portion C1 located at the initial position is moved to the label issuing port 16 and adsorbed to the label adsorbing surface 18 with the label adhesive surface facing down.

  In step ST2, the label standby position (X, Z) is calculated based on the product width data, the X0 data input to the label pasting data file, and the product height data “H”. At this label standby position (X, Z), the label suction unit C1 holds the label issued to the label issuing port 16 (initial position), and waits to apply the label to the package G ′. In the movement distance data to the position, “X” is the horizontal distance from the initial position to the label standby position, and “Z” is the vertical distance from the initial position to the label standby position.

Horizontal movement distance X = XC-LR + X0
XC: distance from the initial position of the label suction unit C1 to the center of the conveyance path (the center of the product).
LR: Detected (measured) by the width detection sensor 17a.
X0: Set value

  Thus, the horizontal movement distance X is determined.

Vertical movement distance Z = (Z0−Z2) −H
Z0: A constant value determined by the mechanism at a vertical distance from the initial position of the label suction unit C1 to the transport surface of the package G ′.
Z2: A vertical distance from the label standby position to the label adhesion position (the upper surface of the package), and is set to a constant value so that the label adhesion position does not vary depending on the height H of the product.
H: Product height (detected by height detection sensor 17b).

  The label application timing time T is a delay time from when the package G ′ is detected by the product detection sensor 49 (T = 0) to when the label suction portion C1 starts to descend from the standby position. The label adhesion position in the Y-axis direction on the object is determined. Accordingly, when the time T = 0 is set so that Y0 = 0, assuming that the transport speed of the package G ′ is D (mm) per second, the labeling timing time T is T = Y0 / D. Is calculated by Y0 is input and set in advance in the pasting conditions.

  The rotation direction of the label is known when the product data is called up in the process of step ST1. For example, if a rotation angle of 45 ° is selected, the position-corrected label standby position data, the corrected paste timing Data is read out.

  In step ST3, the label suction part C1 is moved to the standby position (X, Z). When the label is rotated and pasted, when the rotation angle is selected, the label is moved to a position including correction data. The label adsorption unit C1 is moved to the standby position depending on the number of steps of the horizontal motor M1 and the upper and lower motors M2, which are stepping motors.

  In step ST4, the rotation motor M3 of the second drive mechanism 22 is driven to set the direction of the label suction unit C1 to the called rotation angle. It depends on the number of steps of the rotary motor M3.

  In step ST5, the commodity detection sensor 49 determines whether or not the package G 'has come to a predetermined position. In addition, when sticking a label on the basis of the rear end of the package G ′, it is determined whether the discharge pusher 8 has come to a predetermined position or whether a predetermined time has elapsed since the discharge pusher 8 was activated. .

  In step ST6, when it is detected that the package G 'has reached a predetermined position, the vertical motor M2 is driven to lower the label suction portion C1.

  In step ST7, it is determined whether a label is attached to the package G 'by the label attaching sensor.

  In step ST8, when the label is affixed, the vertical motor M2 is driven to raise the label suction part C1 to the top (Z = 0), and then the horizontal motor M1 is driven to set the horizontal direction to X = 0. When the label suction unit C1 is moved slightly to the initial position and is rotated horizontally, the angle is returned to 0 ° and the process is terminated.

FIG. 8 is a flowchart showing an example of the operation related to the origin return.
In step ST4, when the CPU 41 cannot acquire the rotational position information of the label suction unit C1 with reference to the origin position or the end position due to an emergency stop or power-off, the rotation of the label suction unit C1 of the applicator is rotated. The rotation angle of the suction part 180 is in an unclear state. An example of the operation when returning (restarting) from this state will be described.

  In step ST <b> 11, the CPU 41 as the control unit is a first detection unit 91 (first sensor) or a second detection unit 92 (second sensor), and a detected portion 93 b (convex portion) of the rotating member 93. ) Is detected. If it is determined that it is detected, the process proceeds to step ST13. If it is determined that it is not detected, the process proceeds to step ST12.

  In step ST12, the CPU 41 as the control unit performs rotation control of the label suction unit C1. Specifically, the CPU 41 performs control to rotate the rotation suction unit 180 of the label suction unit C1 to a predetermined angle based on the set label sticking angle. Then, the process proceeds to step ST5.

In step ST <b> 13, the CPU 41 as the control unit controls the return to origin. Specifically, when the first detection unit 91 or the second detection unit 92 cannot detect the detected portion 93b, the CPU 41 drives the motor 35 of the drive mechanism until the detected portion 93b is detected, and the label is detected. Control to rotate the suction part C1 is performed.
Specifically, the CPU 41 determines that the label suction surface 18 in the label suction portion C1 is stopped at an indefinite position (the convex portion of the rotating member 93 is stopped at an indefinite position), and the convex portion of the rotating member 93 is determined. The second drive mechanism 22 is driven from the direction in which the second detection unit 92 is positioned to the direction of the first detection unit 91 until the first detection unit 91 detects it, and the label suction in the label suction unit C1 is performed. The surface 18 is rotated in a horizontal plane to return to the origin. By performing this origin return processing, the label can be attached by being rotated to the correct rotation angle.

  In step ST14, the CPU 41 performs rotation control at a predetermined angle. CPU41 as a control part performs rotation control of label adsorption part C1. Specifically, the CPU 41 performs control to rotate the rotation suction unit 180 of the label suction unit C1 to a predetermined angle based on the set label sticking angle. Then, the process proceeds to step ST5.

As described above, the label sticking device according to the embodiment of the present invention sucks and holds the label located at the issuing port (label issuing port 16) of the label issuing unit B by the label suction unit C1, The rotary suction unit 180 of the label suction unit C1 is rotated horizontally to stick the label to the product at a predetermined angle with respect to the side of the product.
More specifically, the label sticking device rotates the rotation suction unit 180 of the label suction unit C1 in the horizontal plane and the rotation of the drive mechanism C2 (second drive mechanism 22) and the drive mechanism C2 (second drive mechanism 22). A rotating member 93 including a detected portion 93b that rotates in conjunction with the first detecting portion 91 that detects the detected portion 93b of the rotating member 93 at the origin position related to the rotation of the rotation attracting portion 180 of the label attracting portion C1, A second detection unit 92 that detects the detected portion 93b of the rotating member 93 at a terminal position related to the rotation of the rotation adsorption unit 180 of the label adsorption unit C1, and a label adsorption unit C1 by the drive mechanism C2 (second drive mechanism 22). And a CPU 41 as a control unit that acquires rotation position information of the rotation suction unit 180 of the label suction unit C1 based on the origin position or the end position. When the CPU 41 cannot acquire the rotational position information of the label suction unit C1 with reference to the origin position or the end position, the CPU 41 detects the detected portion 93b by the first detection unit 91 or the second detection unit 92. Control is performed to drive the drive mechanism to rotate the rotary suction unit 180 of the label suction unit C1.

For this reason, even when the rotation adsorption unit 180 of the label adsorption unit C1 is returned (restarted) from a state where it is deviated from the origin position related to rotation, the rotation adsorption unit 180 of the label adsorption unit C1 is surely placed at the correct position. It is possible to provide a label attaching device that can be restored.
Further, even when an emergency stop (emergency stop) or a sudden power cut is made, the rotary suction of the label suction unit C1 that is an applicator within the range of the first detection unit 91 and the second detection unit 92 is performed. Since the portion 180 is reciprocated (repetitively) rotated to return to the origin, it is possible to prevent the wire from being twisted or wound around the rotation shaft of the rotation suction portion 180 of the label suction portion C1. Further, it is possible to prevent wire contact failure and disconnection.

  Moreover, the label sticking device according to the embodiment of the present invention includes a restricting portion 95 such as a stopper that defines the rotation range of the rotation suction portion 180 of the label suction portion C1. The first detection unit 91 or the second detection unit 92 is disposed within the rotation range. For this reason, the movable range of the rotation adsorption part 180 of the label adsorption part C1 which is an applicator can be prescribed | regulated reliably within a predetermined rotation range.

  Further, after the convex portion (flag) as the detected portion 93b collides with the restricting portion 95 (stopper), the second detection portion 92 stops at the rotation end position of the rotation suction portion 180 of the label suction portion C1. By controlling the CPU 41 so as to return to the origin, it is possible to prevent a collision between the convex portion (flag) as the detected portion 93b and the restricting portion 95 (stopper), prevent the generation of abnormal noise, and the convex portion as the detected portion 93b ( The effect of preventing friction and deformation of the flag) is obtained.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention.
Further, the embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose and configuration.
Moreover, the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.

16 Label issuing port 18 Label adsorption surface 41 CPU (control unit)
91 1st detection part (1st sensor)
92 2nd detection part (2nd sensor)
93 Rotating member 93b Detected part (convex part)
95 Restriction (Stopper)
180 Rotation adsorption part A Stretch packaging machine (Stretch film packaging machine)
B Label issuing part C Label sticking device C1 Label adsorption part D Label issuing part control part E Packaging mechanism control part

Claims (3)

A label affixing device that adsorbs and holds a label located at an issuing port of a label issuing unit at a label adsorbing unit, horizontally rotates the label adsorbing unit, and affixes the label to a product at a predetermined angle,
A drive mechanism for rotating the label suction portion in a horizontal plane;
A rotating member including a detected portion that rotates in conjunction with rotation of the drive mechanism;
A first detection unit that detects the detected portion of the rotating member at an origin position related to rotation of the label suction unit;
A second detection unit for detecting the detected portion of the rotating member at a terminal position related to the rotation of the label suction unit;
A control unit that acquires rotational position information of the label suction unit based on the origin position or the end position based on driving of the label suction unit by the drive mechanism;
The control unit performs control to drive the drive mechanism and rotate the label adsorption unit until the first detection unit or the second detection unit detects the detected unit. Yes Labeling device. Having a regulating part that defines a rotation range of the label suction part;
The label sticking device according to claim 1, wherein the first detection unit or the second detection unit is disposed within the rotation range.   A packaging apparatus provided with the label sticking apparatus of Claim 1 or Claim 2.

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