JP6588179B1 - Packaging equipment - Google Patents

Abstract

An object of the present invention is to reduce the time required for the initial operation and the operation immediately after the winding body replacement. A packaging device 1 packages a packaging object using a wound body 3 around which a long sheet-like packaging material 2 is wound. The wound body has a recording medium 3b for storing information. The information recorded on the recording medium includes remaining amount information indicating the remaining amount of the packaging material in the wound body. The packaging device includes a driving unit that generates a driving force for rotating the wound body, an information reading unit that reads the remaining amount information stored in the recording medium, and a control unit that controls the packaging device. . The control unit sets the rotation speed of the wound body based on the remaining amount information read by the information reading unit. [Selection] Figure 2

Description

The present disclosure relates to a packaging equipment for packaging packaging object in packaging material within.

  Conventionally, a packaging apparatus is a packaging material unwound from a wound body, and packages a packaging object in order. The wound body is configured by winding a long sheet-like packaging material. Japanese Unexamined Patent Application Publication No. 2018-043875 (Patent Document 1) and Japanese Unexamined Patent Application Publication No. 2018-118778 (Patent Document 2) disclose configurations for detecting the remaining amount of packaging material in a wound body.

JP 2018-043875 A JP 2018-118778 A

  In the apparatus described in the above document, when the remaining amount of the packaging material is not known, in order to reliably prevent step-out, the winding speed is unwound and wound by setting the rotational speed of the wound body to the minimum speed. Taking is done. During the initial operation immediately after starting the packaging device and during the operation immediately after replacing the wound body, there is no result of the remaining amount determination of the packaging material. Processing for determining the remaining amount is performed. Therefore, it takes time before packaging can be started.

  In the present disclosure, a packaging device is provided that can shorten the time required for the initial operation and the operation immediately after the wound body replacement.

  According to the present disclosure, there is provided a packaging device for packaging an object to be packaged using a wound body in which a long sheet-like packaging material is wound. The wound body has a recording medium for storing information. The information recorded on the recording medium includes remaining amount information indicating the remaining amount of the packaging material in the wound body. The packaging device includes a driving unit that generates a driving force for rotating the wound body, an information reading unit that reads the remaining amount information stored in the recording medium, and a control unit that controls the packaging device. . The control unit sets the rotation speed of the wound body based on the remaining amount information read by the information reading unit.

  Said packaging apparatus is further provided with the conveyance part and the tension | tensile_strength provision part. A conveyance part conveys the packaging material unwound from the wound body along a conveyance path | route. The tension applying unit has a displacement member that can be displaced in a direction intersecting the transport path. A tension | tensile_strength provision part provides tension | tensile_strength to a packaging material, when a displacement member presses a packaging material. A fixed position is set for the displacement member. The control unit drives the drive unit to rotate the wound body at a rotation speed set based on the remaining amount information when the packaging device is turned on or when the wound body is mounted on the packaging device. Then, the displacement member is moved to a fixed position.

  The packaging apparatus further includes a position detection unit that detects that the displacement member is in a fixed position. The control unit unwinds the packaging material from the wound body until the position detection unit detects the displacement member, and moves the displacement member to a fixed position. The control unit winds the packaging material around the wound body until the position detection unit that detects the displacement member stops detecting the displacement member, and then winds the packaging material from the wound body until the position detection unit detects the displacement member. Then, the displacement member may be moved to a fixed position.

  The packaging apparatus further includes a position detection unit that detects that the displacement member is in a fixed position. The control unit winds the packaging material around the wound body until the position detection unit detects the displacement member, and moves the displacement member to a fixed position.

  In the packaging apparatus, the information reading unit is configured to be able to write the remaining amount information to the recording medium. A control part measures the drive amount of the drive part while performing the drive of the wound body by a drive part, and determines the residual amount of the packaging material in a wound body based on the measurement result. The control unit controls the information reading unit so that the determination result of the remaining amount of the packaging material is written in the recording medium as the remaining amount information.

  In the packaging apparatus, a plurality of stages are set for the remaining amount of the packaging material. The control unit controls the information reading unit to write the remaining amount reduced by one step onto the recording medium as the remaining amount information when it is determined that the remaining amount of the packaging material is smaller than the remaining amount at the current stage.

  According to this indication, the winding object used for the packaging device of any one of the above-mentioned aspects is provided. The wound body includes a core tube and a long sheet-like packaging material wound around the core tube. The core tube has a recording medium for storing information, and the information includes remaining amount information indicating the remaining amount of the packaging material in the wound body.

  According to this indication, the winding object used for the packaging device of any one of the above-mentioned aspects is provided. The wound body includes a core tube, a long sheet-like packaging material wound around the core tube, and a recording medium for storing information. The information includes remaining amount information indicating the remaining amount of the packaging material in the wound body.

  According to this indication, the core pipe used for the above-mentioned winding object is provided. The wound body includes a core tube and a long sheet-like packaging material wound around the core tube. The wound body has a recording medium for storing information. The information recorded on the recording medium includes remaining amount information indicating the remaining amount of the packaging material in the wound body.

  According to this indication, the manufacturing method of the winding object used for the packaging device of any one of the above-mentioned aspects is provided. The wound body includes a core tube and a long sheet-like packaging material wound around the core tube. The manufacturing method includes a step of preparing a core tube and a step of winding a packaging material around the core tube.

  In the above manufacturing method, the wound body has a recording medium for storing information. The information includes remaining amount information indicating the remaining amount of the packaging material in the wound body. The manufacturing method further includes a step of writing the amount of the packaging material wound around the core tube in the winding step onto the recording medium as remaining amount information.

  According to this indication, the manufacturing method of the winding object used for the packaging device of any one of the above-mentioned aspects is provided. The manufacturing method includes a step of preparing a core tube, a step of preparing a wound product in which a long sheet-like packaging material is wound around a hollow cylindrical portion, and a wound product by inserting the core tube into the cylindrical portion. And a step of integrating the core tube.

  In the above manufacturing method, the wound body has a recording medium for storing information. The information includes remaining amount information indicating the remaining amount of the packaging material in the wound body. The manufacturing method further includes a step of writing the amount of the packaging material wound around the cylindrical portion on the recording medium as the remaining amount information.

  According to the present disclosure, there is provided a wound product in which a long sheet-like packaging material is wound around a hollow cylindrical portion, which is used in the above manufacturing method.

  According to the packaging device according to the present disclosure, the time required for the initial operation and the operation immediately after the wound body replacement can be shortened.

It is a perspective view which shows the external appearance of a chemical | medical agent supply apparatus. It is a schematic block diagram of the packaging apparatus which concerns on embodiment. It is a schematic perspective view of a packaging apparatus. It is a front view of a packaging material supply part. It is the perspective view which looked at the back of the packaging material supply part. It is a rear view of a packaging material supply part. It is a front view of a packaging material supply part when a dancer roller exists in a fixed position. It is the perspective view which looked at the back surface of the packaging material supply part when a dancer roller exists in a fixed position. It is a front view of a packaging material supply part when a dancer roller exists in a movement position at the time of conveyance. It is the perspective view which looked at the back surface of the packaging material supply part when a dancer roller exists in a movement position at the time of conveyance. It is a front view of the packaging material supply part when a dancer roller exists in a retracted position. It is the perspective view which looked at the back of the packaging material supply part when a dancer roller exists in a retracted position. It is a block diagram which shows the electric constitution of the packaging apparatus which concerns on embodiment. It is a flowchart which shows the setting operation | movement which sets the rotational speed of a winding / unwinding motor. It is a flowchart which shows the fixed position return operation | movement of a dancer roller at the time of initial operation | movement. It is a flowchart which shows the fixed position return operation | movement of a dancer roller at the time of initial operation | movement. It is a schematic diagram which shows a movement of the dancer roller during execution of the home position return operation of the dancer roller during the initial operation. It is a flowchart which shows the fixed position return operation | movement of a dancer roller at the time of winding body mounting | wearing. It is a flowchart which shows the fixed position return operation | movement of a dancer roller at the time of winding body mounting | wearing. It is a flowchart which shows the fixed position return operation | movement of a dancer roller at the time of winding body mounting | wearing. It is a mimetic diagram showing movement of a dancer roller during execution of a fixed position return operation of a dancer roller at the time of winding body attachment. It is a flowchart which shows the operation | movement by the unwinding winding part in a packaging operation, and a conveyance part. It is a flowchart which shows the 1st example of the unwinding operation | movement by an unwinding / winding part. It is a flowchart which shows the 2nd example of the unwinding operation | movement by an unwinding winding part. It is a flowchart which shows the 3rd example of the unwinding operation | movement by an unwinding / winding part. It is a flowchart which shows the other example of the fixed position return operation | movement of a dancer roller at the time of initial operation | movement. It is a mimetic diagram showing movement of a dancer roller under execution of other examples of a fixed position return operation of a dancer roller at the time of initial operation. It is a flowchart which shows the other example of the fixed position return operation | movement of a dancer roller at the time of winding body mounting | wearing. It is a mimetic diagram showing movement of a dancer roller under execution of other examples of fixed position return operation of a dancer roller at the time of winding body wearing. It is a flowchart which shows the 1st example of the manufacturing method of a wound body. It is a figure which shows typically the 1st example of the manufacturing method of a wound body. It is a flowchart which shows the 2nd example of the manufacturing method of a wound body. It is a figure which shows typically the 2nd example of the manufacturing method of a wound body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

  FIG. 1 is a perspective view showing an appearance of the medicine supply device 101. As shown in FIG. 1, the medicine supply device 101 includes a housing 102 that constitutes an outline of the medicine supply device 101. The housing 102 has an upper housing 103 and a lower housing 104. The upper housing 103 stores a medicine storage / dispensing device for discharging each medicine from a plurality of medicine containers. In the lower housing 104, a packaging device for packaging the medicine in the packaging material is accommodated.

  Doors 105 a and 105 b are attached to the front surface of the upper housing 103. The door 105a has a handle 106a, and the door 105b has a handle 106b. A user who uses the medicine supply apparatus 101 can open and close the door 105a by holding the handle 106a, and can open and close the door 105b by holding the handle 106b. An operation unit 107 is provided on the front surface of the upper housing 103. The operation unit 107 may include a display having a touch panel function, or may include a physical button on the operation panel.

  Doors 108 and 109 are provided on the front surface of the lower housing 104. The doors 108 and 109 are configured to be openable and closable. A user who uses the medicine supply apparatus 101 can open the doors 108 and 109 and take out the package containing the medicine from the inside of the lower housing 104. Openings may be formed in the doors 108 and 109, and the package containing the medicine may be taken out from the openings.

  FIG. 2 is a schematic configuration diagram of the packaging device 1 according to the embodiment. The packaging device 1 is used for packaging an object to be packaged. The package object is a drug, specifically, a solid drug. Examples of solid drugs include tablets, pills and capsules. The solid drug may be a powder and a granule. The packaging object is not limited to a solid drug. The package object may be a semi-solid drug or a liquid drug.

  The packaging device 1 is a medicine packaging device for packaging medicine based on a prescription. The prescription is what the doctor gives to the patient. The prescription includes patient information and drug information. Patient information includes the name and age of the patient. The drug information includes the drug name, dosage, usage and dose. The packaging device 1 is used for packaging a medicine for each dose based on such a prescription.

  The packaging device 1 includes a packaging material transport unit 8. The packaging material transport unit 8 applies a driving force to the packaging material 2 to transport the packaging material 2. The packaging material 2 has a long sheet shape. The packaging material 2 is conveyed in the longitudinal direction of the packaging material 2. The packaging material 2 is unwound from the wound body 3. The wound body 3 is obtained by winding the packaging material 2 around a core tube 3a which is a hollow tube body into a roll shape. The arrows in FIG. 2 indicate the conveyance direction DR of the packaging material 2. Hereinafter, the transport direction DR of the packaging material 2 is simply referred to as “transport direction DR”.

  A recording medium 3b is provided in the core tube 3a. The recording medium 3b may be provided directly or indirectly with respect to the core tube 3a. The recording medium 3b may be affixed, for example, to the winding start portion of the packaging material 2. The recording medium 3b includes a non-volatile memory and stores information. The information stored in the recording medium 3b includes remaining amount information indicating the remaining amount of the packaging material 2 wound around the core tube 3a. The recording medium 3b may store other information such as the paper quality of the packaging material 2 together. The recording medium 3b may be, for example, an IC tag (RFID (Radio Frequency Identification) tag).

  The core tube 3a and the recording medium 3b are reusable. The core tube 3a and the recording medium 3b may be reused after using the packaging material 2 that has been previously wound.

  When the wound body 3 is manufactured, a lot number, a manufacturing date, customer information, paper quality information of the packaging material 2, remaining amount information, and the like may be recorded on the recording medium 3b. In the case of the new wound body 3, the remaining amount of the packaging material 2 wound around the core tube 3a in the new wound body 3 is recorded as the remaining amount information. After the wound body 3 is mounted on the packaging device 1, the use start date and time, environmental information, and the like may be additionally written on the recording medium 3b.

  The packaging device 1 further includes a printing unit 4, a supply unit 5, and a storage unit forming unit 6. The printing unit 4, the supply unit 5, and the storage unit forming unit 6 are arranged in this order from the upstream (side closer to the winding body 3) to the downstream (side away from the winding body 3) in the transport direction DR. The printing unit 4 prints predetermined information on the packaging material 2 conveyed by the packaging material conveyance unit 8. The predetermined information is information related to the medicine. The supply unit 5 supplies the medicine to the packaging material 2 conveyed by the packaging material conveyance unit 8. The medicine is supplied for each dose based on a prescription. The accommodating part forming part 6 forms an accommodating part using the packaging material 2 conveyed by the packaging material conveying part 8. A medicine is accommodated in the accommodating portion. After the medicine is supplied from the supply unit 5, the container forming part 6 heat-seals the packaging material 2 to form a package containing the medicine inside.

  The packaging device 1 further includes a perforation forming unit 7. The perforation forming part 7 is provided in the accommodating part forming part 6. The perforation forming unit 7 forms a perforation extending in the direction orthogonal to the conveyance direction DR on the packaging material 2 conveyed by the packaging material conveyance unit 8. The perforation is one in which a plurality of pores are continuously arranged in the short direction of the packaging material 2.

  In such a packaging apparatus 1, the packaging part 9 is configured by the accommodation part forming part 6, the perforation forming part 7, and the packaging material conveying part 8. In the packaging part 9, the medicine as a packaging object is sequentially packaged using the packaging material 2 unwound from the wound body 3.

  FIG. 3 is a schematic perspective view of the packaging device 1. The packaging device 1 further includes a packaging material supply unit 10, a direction changing bar 11, a cutting unit 12, a discharge unit 13, and a frame 15. Each device constituting the packaging device 1 including the supply unit 5, the storage unit forming unit 6, and the packaging material transporting unit 8 described above is attached to a frame 15. The packaging device 1 is configured to be capable of reciprocating with respect to the housing 102 (FIG. 1) in the thickness direction of the frame 15. The packaging device 1 is movable in the front-rear direction with respect to the lower housing 104 (FIG. 1), and is configured to be drawn forward from the storage position stored in the lower housing 104.

  The packaging material supply unit 10 includes a substantially box-shaped casing 20 and a mounted portion 21 to which the wound body 3 illustrated in FIG. 2 is mounted. The mounted portion 21 supports the wound body 3. The wound body 3 is attached to the mounted portion 21 so as not to rotate relative to the mounted portion 21. The casing 20 has a planar outer surface 20a. The outer surface 20 a constitutes a partial surface of the box-shaped casing 20. The mounted portion 21 protrudes from the outer surface 20a of the casing 20 and extends substantially perpendicular to the outer surface 20a.

  A guide hole 22 is formed in the outer surface 20 a of the casing 20. The guide hole 22 extends gently curved. A dancer roller 23 is provided so as to be movable along the direction in which the guide hole 22 extends. Fixed rollers 24 and 25 are attached to the outer surface 20a. The dancer roller 23 and the fixed rollers 24 and 25 protrude from the outer surface 20a of the casing 20 and extend substantially perpendicular to the outer surface 20a. The dancer roller 23 and the fixed rollers 24 and 25 extend in parallel to each other. Other configurations of the packaging material supply unit 10 will be described later.

  The packaging material 2 unwound from the wound body 3 is wound around the fixed roller 24, the dancer roller 23, and the fixed roller 25 in this order. The packaging material 2 is further wound around the direction change bar 11. The direction change bar 11 changes the transport direction DR of the packaging material 2 and moves the packaging material 2 in a direction toward the supply unit 5. The packaging material 2 is further wound around the packaging unit 9 (FIG. 2) via the supply unit 5.

  At the medicine supply position where the supply unit 5 supplies the medicine to the packaging material 2, the packaging material 2 is folded in two along the center line in the short direction of the packaging material 2. The supply unit 5 has a hopper 151. The hopper 151 guides the medicine dispensed from the medicine storage / dispensing device accommodated in the upper housing 103 (FIG. 1) to the packaging material 2. The tip of the hopper 151 is disposed so as to enter the inside of the folded packaging material 2. The medicine enters the inside of the folded packaging material 2 by being guided by the hopper 151.

  The cutting part 12 is provided downstream of the accommodating part forming part 6 and the packaging material conveying part 8 constituting the packaging part 9 in the conveying direction DR. The cutting part 12 cuts the packaging material 2 in which the medicine is accommodated. The discharge unit 13 is provided downstream of the cutting unit 12 in the transport direction DR. The discharge unit 13 generates a driving force for transporting the packaging material 2 cut by the cutting unit 12 and discharges the packaging material 2 to the outside. Hereinafter, a path through which the packaging material 2 unwound from the wound body 3 and transported to the discharge unit 13 is referred to as a “transport path”.

  FIG. 4 is a front view of the packaging material supply unit 10. FIG. 4 shows the packaging material supply unit 10 viewed from the direction of the arrow IV shown in FIG. The dancer roller 23 moves relative to the casing 20 along the guide hole 22 formed in the casing 20. The dancer roller 23 is configured to be displaceable in a direction that intersects the conveyance path of the packaging material 2.

  The packaging material supply unit 10 includes a fixed position sensor 28. The fixed position sensor 28 detects the position of the dancer roller 23. The fixed position sensor 28 is a magnetic sensor. A magnet is attached to a main arm, which will be described later, to which the dancer roller 23 is attached. A position where the dancer roller 23 overlaps with the fixed position sensor 28 in the direction perpendicular to the paper surface of FIG. 4 is referred to as a fixed position. The fixed position is on the transport path. The fixed position sensor 28 detects the magnetic force and is turned on when the dancer roller 23 is in the fixed position. When the dancer roller 23 moves away from the home position, the home position sensor 28 switches from on to off. Thereby, the fixed position sensor 28 detects whether or not the dancer roller 23 is in a fixed position. The fixed position sensor 28 constitutes the position detection unit of the embodiment that detects that the dancer roller 23 is in the fixed position.

  The packaging material supply unit 10 has a lock release unit 26. The main arm is locked by a lock portion described later. By manually operating the lock release unit 26, the lock of the main arm by the lock unit is released.

  FIG. 5 is a perspective view of the packaging material supply unit 10 as viewed from the back. FIG. 6 is a rear view of the packaging material supply unit 10. FIG. 6 shows the packaging material supply unit 10 as viewed from the direction of the arrow VI shown in FIG. The packaging material supply unit 10 includes a limit position sensor 27 and a retracted position sensor 29 in addition to the fixed position sensor 28 described above. The limit position sensor 27, the fixed position sensor 28, and the retracted position sensor 29 are supported by a sensor support portion 30. The sensor support portion 30 is fixed to the ceiling portion of the casing 20.

  In FIG. 4, the position where the dancer roller 23 is disposed is referred to as a limit position. The limit position is at one end of the guide hole 22. The position of the other end of the guide hole 22 is referred to as a retracted position. The limit position sensor 27 and the retracted position sensor 29 are magnetic sensors. The limit position and the retracted position are out of the conveyance path. The limit position is farther from the transport path than the fixed position.

  The limit position sensor 27 and the retreat position sensor 29 detect the position of the dancer roller 23. The limit position sensor 27 detects the magnetic force and is turned on when the dancer roller 23 is in the limit position. When the dancer roller 23 leaves the limit position, the limit position sensor 27 switches from on to off. Accordingly, the limit position sensor 27 detects whether or not the dancer roller 23 is at the limit position. When the dancer roller 23 is in the retracted position, the retracted position sensor 29 detects the magnetic force and is turned on. When the dancer roller 23 moves away from the retracted position, the retracted position sensor 29 switches from on to off. Accordingly, the retreat position sensor 29 detects whether or not the dancer roller 23 is in the retreat position.

  The packaging material supply unit 10 has an unwinding / winding motor 35. The unwinding / winding motor 35 of the present embodiment is a stepping motor. The unwinding / winding motor 35 is supported by the casing 20. The unwinding / winding motor 35 rotates the mounted portion 21 to generate a rotational driving force for unwinding the packaging material 2 from the wound body 3 or winding the packaging material 2 onto the wound body 3. . The driving force generated by the unwinding / winding motor 35 is transmitted to the mounted portion 21 via the intermediate gear 72, the intermediate pinion gear 73, and the roller gear 74. The intermediate gear 72 and the intermediate pinion gear 73 are fixed so as to be rotatable integrally with the intermediate gear shaft 75 as a center.

  The packaging material supply unit 10 includes a main arm 40, a sub arm 50, and a gear positioning plate 55. The main arm 40 has a first arm portion 41, a second arm portion 42, and a bent portion 43. Each of the first arm portion 41 and the second arm portion 42 shown in FIG. 6 has a substantially linear shape. The 1st arm part 41, the 2nd arm part 42, and the bending part 43 are mutually fixed so that rotation is possible. The main arm 40 has a substantially L-shape bent at the bent portion 43.

  The first arm portion 41 has a distal end and a proximal end. The dancer roller 23 described above is fixed to the tip of the first arm portion 41. The first arm portion 41 is connected to the bent portion 43 at the base end thereof. The second arm portion 42 has a distal end and a proximal end. A gear positioning plate 55 is fixed to the base end of the second arm portion 42. The second arm portion 42 is connected to the bent portion 43 at the tip thereof. A lock pin 47 is fixed to the bent portion 43. The main arm 40 is configured to be rotatable about an arm rotation shaft 44 as a rotation center. The main arm 40 is supported by the casing 20 via an arm rotation shaft 44.

  The sub arm 50 has a proximal end portion 51 and a distal end portion 52. The base end portion 51 is in surface contact with the surface of the main arm 40 from the bent portion 43 to the second arm portion 42 of the main arm 40, and is fixed to the main arm 40 using a plurality of fixing members such as bolts. Thereby, the sub arm 50 is configured to be rotatable integrally with the main arm 40. A cylindrical portion 53 is attached to the distal end portion 52 of the sub arm 50.

  One of the plurality of fixing members that fix the sub arm 50 to the main arm 40 constitutes a spring hook portion 45. The sensor support portion 30 is also provided with a spring hook portion 31. A spring hook portion 31 is configured by a bolt attached to the sensor support portion 30. One end of the return spring 46 is engaged with the spring hook 31, and the other end of the return spring 46 is engaged with the spring hook 45. The return spring 46 is, for example, a coil spring.

  The gear positioning plate 55 is fixed to the base end of the second arm portion 42 of the main arm 40 using a plurality of fixing members 56 such as bolts. A notch 59 is formed in the gear positioning plate 55. The gear positioning plate 55 has a first portion 57 and a second portion 58. The first portion 57 and the second portion 58 are separated by a notch 59. A part of the edge of the second portion 58 forms an arc edge 58a. The arc edge 58 a has an arc shape centered on the arm rotation shaft 44.

  A cylindrical portion 65 is provided in contact with the arc edge 58a. The cylindrical portion 65 is attached to the distal end portion of the second portion 63 of the gear arm. The tip of the third portion 64 of the gear arm is engaged with the intermediate gear shaft 75 through a bearing. A spring hook 66 is formed on the third portion 64. One end of a return spring (not shown) is engaged with the spring hook 38 and the other end is engaged with the spring hook 66.

  The outer peripheral surface of the cylindrical portion 65 is slidable with respect to the arc edge 58a. The cylindrical portion 65 is also movable in the notch 59. The intermediate gear 72 and the intermediate pinion gear 73 are positioned by the outer peripheral surface of the cylindrical portion 65 coming into contact with the arc edge 58a, and the intermediate gear 72 and the intermediate pinion gear 73 are moved to their positions by moving the cylindrical portion 65 into the notch 59. It is configured to change.

  The packaging material supply unit 10 further includes a lock unit 78. The lock part 78 has a lock member 79. The lock member 79 has an inclined portion 80 and an engaging portion 81 at an end portion on one side (left side in FIG. 6). The lock member 79 has a connecting piece at the other end (the right side in FIG. 6). The lock member 79 also has a protrusion 82.

  The lock member 79 is held by a holding member 84. The holding member 84 is fixed to the casing 20. The holding member 84 holds the lock member 79 so as to be slidable in the extending direction (left-right direction in FIG. 6). The holding member 84 has a protrusion. The protruding portion 82 of the locking member 79 and the protruding portion of the holding member 84 are arranged so that the tip portions thereof face each other. A spring 86 is provided across the protrusion 82 of the lock member 79 and the protrusion of the holding member 84. The protrusion 82 supports one end of the spring 86 (the left end of the spring 86 shown in FIG. 6). The protrusion of the holding member 84 supports the other end of the spring 86 (the right end of the spring 86 shown in FIG. 6).

  The lock portion 78 also has a linear solenoid actuator 87. The linear solenoid actuator 87 is fixed to the casing 20 by a holding member (not shown). The linear solenoid actuator 87 has a main body portion and a stem 88 protruding from the main body portion. The stem 88 is connected to the connecting piece of the lock member 79.

  The lock portion 78 is configured to lock the main arm 40 by engaging with a lock pin 47 attached to the main arm 40.

  The packaging device 1 has a spring hinge 90. The spring hinge 90 includes a first hinge plate 91, a second hinge plate 92, a hinge shaft 93, and a torsion spring 94. The first hinge plate 91 and the second hinge plate 92 are connected via a hinge shaft 93.

  The first hinge plate 91 is fixed to the lower housing 104 and cannot move. The second hinge plate 92 is movable relative to the first hinge plate 91 about the hinge shaft 93 as a rotation center. The second hinge plate 92 is inclined with respect to the vertical direction so that its upper end is relatively forward (rightward in the figure) and its lower end is relatively rearward (leftward in the figure). Has been placed.

  The torsion spring 94 has a coil part wound around the hinge shaft 93 and a pair of arm parts protruding from the coil part. One of the pair of arm portions is in contact with the first hinge plate 91. The other of the pair of arm portions is in contact with the second hinge plate 92.

  The torsion spring 94 causes an elastic repulsive force to act between the first hinge plate 91 and the second hinge plate 92, and the second hinge plate 92 moves away from the first hinge plate 91 about the hinge shaft 93 as a rotation center. The second hinge plate 92 is biased. The first hinge plate 91 and the second hinge plate 92 extend substantially orthogonally in a state where an urging force of the torsion spring 94 and an external force other than gravity do not act on the spring hinge 90. When viewed in the axial direction of the hinge shaft 93, the first hinge plate 91 and the second hinge plate 92 are arranged in an L shape.

  The packaging material supply unit 10 can move relative to the spring hinge 90 in the front-rear direction of the housing 102 (left-right direction in FIG. 6). In the arrangement shown in FIG. 6, the cylindrical portion 53 of the sub arm 50 is separated from the second hinge plate 92, and the cylindrical portion 53 and the second hinge plate 92 are not in contact with each other. The cylindrical portion 53 is configured to slide relative to the second hinge plate 92 of the spring hinge 90, thereby rotating the sub arm 50 and the main arm 40 about the arm rotation shaft 44.

  FIG. 7 is a front view of the packaging material supply unit 10 when the dancer roller 23 is in a fixed position. The dancer roller 23 shown in FIG. 7 moves to the right in the drawing along the guide hole 22 as compared to FIG. The dancer roller 23 shown in FIG. 7 is located at a fixed position away from the limit position. Since the dancer roller 23 is away from the limit position shown in FIG. 4, the limit position sensor 27 is shown in FIG. On the other hand, in FIG. 7, since the dancer roller 23 is in a fixed position, the dancer roller 23 overlaps the fixed position sensor 28, and the fixed position sensor 28 is not shown.

  The packaging material 2 unwound from the wound body 3 (not shown in FIG. 7) is wound around the fixed roller 24, the dancer roller 23, and the fixed roller 25 in this order as described above. When the dancer roller 23 is in a fixed position, a predetermined tension is applied to the packaging material 2. By applying tension to the packaging material 2, the occurrence of loosening of the packaging material 2 is suppressed. Thereby, when the packaging material conveyance part 8 (FIG. 2, 3) conveys the packaging material 2, the shift | offset | difference of the packaging material 2, a leaning, etc. are suppressed.

  FIG. 8 is a perspective view of the back surface of the packaging material supply unit 10 when the dancer roller 23 is in a fixed position. The main arm 40 and the sub arm 50 shown in FIG. 8 rotate counterclockwise around the arm rotation shaft 44 as compared with FIG. The gear positioning plate 55 rotates together with the main arm 40, and the cylindrical portion 65 relatively moves along the arc edge 58a of the gear positioning plate 55, so that the cylindrical portion 65 shown in FIG. It is close to 59. The lock pin 47 shown in FIG. 8 moves in a direction approaching the lock portion 78 as compared to FIG. The return spring 46 shown in FIG. 8 has an increased length compared to FIG.

  FIG. 9 is a front view of the packaging material supply unit 10 when the dancer roller 23 is in the transport position. The dancer roller 23 shown in FIG. 9 moves to the right in the drawing along the guide hole 22 as compared to FIG. The dancer roller 23 shown in FIG. 9 is away from the home position, so both the limit position sensor 27 and the home position sensor 28 are shown in FIG. In FIG. 7, the position where the dancer roller 23 is disposed is referred to as a movement position during conveyance. The movement position during conveyance is on the conveyance path.

  In FIG. 9, the packaging material 2 is transported by the packaging material transport unit 8 for the length of one package of the medicine accommodated therein, and moved from a fixed position as the packaging material 2 is transported. A dancer roller 23 is shown. While the packaging material 2 is being conveyed by the packaging material conveyance unit 8, the unwinding / winding motor 35 is stopped. Therefore, the packaging material 2 is not unwound from the wound body 3.

  On the other hand, the length of the packaging material 2 in the conveyance direction DR from the wound body 3 to the packaging material conveyance unit 8 is reduced when the packaging material conveyance unit 8 conveys the packaging material 2 as one package. Shorten the package. The change in the length of the packaging material 2 is adjusted by moving the dancer roller 23 to shorten the distance between the dancer roller 23 and the fixed roller 24 and the distance between the dancer roller 23 and the fixed roller 25. Yes.

  That is, the wrapping material 2 wound between the dancer roller 23 and the fixed rollers 24 and 25 at the fixed position shown in FIG. 7, and the dancer roller 23 and the fixed rollers 24 and 25 at the position shown in FIG. 9 is compared with the length of the packaging material 2 wound around, the length of the packaging material 2 is shorter in FIG. By making the change in the length of the packaging material 2 wound between the dancer roller 23 and the fixed rollers 24, 25 correspond to the length of one package, a predetermined tension is applied to the packaging material 2. The packaging material 2 can be conveyed while maintaining the state to which is given constant.

  The length of one package in the transport direction DR is not always constant, and may be changed according to the amount of medicine accommodated in the package. Depending on the dimensions of the package, the transport amount of the packaging material 2 by the packaging material transport unit 8 can also be changed, and the movement position during transport also varies. When the length of one package in the transport direction DR is large, the movement position during transport is set to a position relatively away from the fixed position. When the length of one package in the transport direction DR is small, the movement position during transport is set to a position that is relatively close to a fixed position.

  The packaging material 2 is conveyed intermittently. After carrying the packaging material 2, the unwinding / winding motor 35 is driven while the conveyance of the packaging material 2 is stopped. When the driving force of the unwinding / winding motor 35 is transmitted to the mounted portion 21 and the wound body 3 rotates, the packaging material 2 is unwound from the wound body 3. At this time, since the conveyance of the packaging material 2 by the packaging material conveyance unit 8 is stopped, the packaging material 2 unwound from the wound body 3 is wound between the dancer roller 23 and the fixed rollers 24 and 25. Used to restore the length of the packaging material 2. That is, when the packaging material 2 is unwound from the wound body 3, the dancer roller 23 moves from the moving position during conveyance shown in FIG. 9 toward the fixed position shown in FIG. When the dancer roller 23 moves to a fixed position and the fixed position sensor 28 detects the dancer roller 23, the unwinding / winding motor 35 is stopped.

  In this way, a predetermined tension is applied to the packaging material 2 by alternately repeating the transportation of the packaging material 2 by the packaging material transport unit 8 and the unwinding of the packaging material 2 from the wound body 3. The packaging material 2 can be appropriately conveyed while maintaining the state.

  FIG. 10 is a perspective view of the back surface of the packaging material supply unit 10 when the dancer roller 23 is in the moving position during conveyance. The main arm 40 and the sub arm 50 shown in FIG. 10 rotate counterclockwise around the arm rotation shaft 44 as compared with FIG. As the gear positioning plate 55 rotates together with the main arm 40 and the cylindrical portion 65 relatively moves along the arc edge 58a of the gear positioning plate 55, the cylindrical portion 65 shown in FIG. It is close to 59. The lock pin 47 shown in FIG. 10 moves in a direction approaching the lock portion 78 as compared to FIG. The return spring 46 shown in FIG. 10 has an increased length compared to FIG.

  As described above, when the packaging material 2 is being transported by the packaging material transport unit 8, a state where tension is applied to the packaging material 2 is maintained. At this time, the dancer roller 23 is positioned between the fixed position and the transport position during transport. Move back and forth. When all of the packaging material 2 is unwound from the wound body 3, the upstream end of the packaging material 2 in the transport direction DR is not supported by the wound body 3, so that no tension is applied to the packaging material 2. Since the dancer roller 23 is not supported by the packaging material 2 in a state where tension is applied, the main arm 40 is rotated by the elastic force of the return spring 46, and accordingly, the dancer roller 23 moves to the limit position.

  FIG. 11 is a front view of the packaging material supply unit 10 when the dancer roller 23 is in the retracted position. The dancer roller 23 shown in FIG. 11 moves to the right in the drawing along the guide hole 22 as compared with FIG. The dancer roller 23 shown in FIG. 11 is located at the retracted position of the other end of the guide hole 22.

  7 and 9, the dancer roller 23 is located on the left side in the figure with respect to the fixed rollers 24 and 25. Therefore, the packaging material 2 wound around the fixed roller 24, the dancer roller 23, and the fixed roller 25 in this order is pressed by the dancer roller 23, thereby applying tension to the packaging material 2. On the other hand, in FIG. 11, the dancer roller 23 is located on the right side in the figure with respect to the fixed rollers 24 and 25. The packaging material 2 unwound from the wound body 3 passes through the gap between the dancer roller 23 and the fixed roller 24 in the left-right direction in FIG. 11, and also passes through the gap between the dancer roller 23 and the fixed roller 25. It is possible. At this time, no tension is applied to the packaging material 2.

  The tension is applied to the packaging material 2 by passing the packaging material 2 through the gap between the dancer roller 23 and the fixed rollers 24 and 25 in the left-right direction in FIG. 11 and moving the dancer roller 23 to a fixed position in this state. Is done.

  The dancer roller 23 and the fixed rollers 24 and 25 constitute a tension applying unit that applies tension to the packaging material 2 unwound from the wound body 3. The tension applying unit applies tension to the packaging material 2 when the dancer roller 23 presses the packaging material 2. The dancer roller 23 constitutes a displacement member that can be displaced in a direction that intersects the conveyance path of the packaging material 2. By moving the dancer roller 23, the tension applying unit can be switched between an applied state in which tension is applied to the packaging material 2 and a non-applied state in which tension is not applied to the packaging material 2.

  FIG. 12 is a perspective view of the back surface of the packaging material supply unit 10 when the dancer roller 23 is in the retracted position. The main arm 40 and the sub arm 50 shown in FIG. 12 rotate counterclockwise around the arm rotation shaft 44 as compared with FIG. The cylindrical portion 65 shown in FIG. 12 is located in the notch 59 away from the arc edge 58 a of the gear positioning plate 55. The lock pin 47 shown in FIG. 12 is engaged with a lock portion 78 (not shown in FIG. 12), whereby the main arm 40 is locked. The return spring 46 shown in FIG. 12 has an increased length as compared with FIG. 10, and takes the maximum length.

  Next, the control for executing the packaging operation using the packaging device 1 will be described. FIG. 13 is a block diagram illustrating an electrical configuration of the packaging device 1 according to the embodiment. As shown in FIG. 13, the packaging device 1 includes an operation unit 107 and an overall control unit 200.

  The operation unit 107 is operated by an operator who operates the packaging device 1. By operating the operation unit 107 by the operator, information necessary for the packaging operation of the packaging device 1 is input to the overall control unit 200. Information necessary for the packaging operation of the packaging device 1 includes prescription data based on a prescription and various setting information. The setting information includes the length of one package of the package in which the medicine is accommodated. Information necessary for the packaging operation of the packaging device 1 may be input to the overall control unit 200 from an external computer.

  The overall control unit 200 controls the overall operation of the packaging device 1 based on information necessary for the packaging operation of the packaging device 1. The overall control unit 200 controls the supply unit 5 and the packaging unit 9.

  The overall control unit 200 transmits a control signal to the supply unit 5 and instructs the type and quantity of the medicine to be supplied by the supply unit 5. The overall control unit 200 transmits a control signal to the packaging unit 9 so that the length of the package in the transport direction DR becomes a predetermined value. The length of the package may be, for example, a value input via the operation unit 107, or may be a value set by the overall control unit 200 based on the type and quantity of the medicine.

  The packaging unit 9 has a packaging control unit 201. The packaging control unit 201 receives detection signals from the fixed position sensor 28, the limit position sensor 27, and the retracted position sensor 29, and determines the current position of the dancer roller 23. The packaging control unit 201 controls the unwinding / winding motor 35, the pressure motor 6m, the heater 6h, the transport motor 8m, and the reading / writing unit 3R based on the control signal from the overall control unit 200. The unwrapping and winding motor 35, the pressure motor 6m, the heater 6h, the conveyance motor 8m, and the reading / writing unit 3R are appropriately driven and stopped, whereby the packaging material 2 is packaged.

  The pressure motor 6m and the heater 6h are included in the housing portion forming portion 6 (FIG. 2). The heater 6h is built in one of a pair of pressurizing members arranged to face each other with the packaging material 2 therebetween. The pressure motor 6m drives a pair of pressure members, presses the packaging material 2 from both sides with the pressure members, and separates the pressure member from the packaging material 2. When the packaging material 2 is pressurized from both sides, the heater 6h is driven to heat the packaging material 2, whereby a part of the packaging material 2 is heat-sealed to form a package containing the medicine inside.

  The conveyance motor 8 m is included in the packaging material conveyance unit 8. The conveyance motor 8m rotationally drives a pair of conveyance rollers arranged to face each other with the packaging material 2 interposed therebetween. The packaging material 2 is conveyed by the conveyance motor 8m rotationally driving the pair of conveyance rollers. The packaging material transport unit 8 transports the packaging material 2 intermittently. While the conveyance of the packaging material 2 is stopped, heat sealing of the packaging material 2 by the housing portion forming unit 6, printing of predetermined information on the packaging material 2 by the printing unit 4 (FIG. 2), perforation forming unit Predetermined operations such as formation of perforations in the packaging material 2 by 7 (FIG. 2) and cutting of the packaging material 2 by the cutting portion 12 (FIG. 3) are performed.

  The reading / writing unit 3R performs data communication with the recording medium 3b (FIG. 2) under the control of the packaging control unit 201. Specifically, the reading / writing unit 3R accesses the recording medium 3b, reads information recorded on the recording medium 3b, and writes information to the recording medium 3b. The reading / writing unit 3R newly writes information on the recording medium 3b. The read / write unit 3R overwrites and updates the information already recorded on the recording medium 3b with the latest information.

  When the operation unit 107 includes a display, and the remaining amount information of the packaging material 2 is recorded on the recording medium 3b, the overall control unit 200 displays the remaining amount information read from the recording medium 3b on the display. A command signal may be output to the operation unit 107. The user who uses the packaging device 1 can know the remaining amount information of the packaging material 2 by looking at the display. For example, a user who knows that the remaining amount of the packaging material 2 is small can arrange a replacement packaging material 2 in advance.

  FIG. 14 is a flowchart showing a setting operation for setting the rotation speed of the unwinding / winding motor 35. In the packaging device 1 of the present embodiment, the unwinding / winding unit is configured to execute unwinding of the packaging material 2 from the wound body 3 or winding of the packaging material 2 onto the wound body 3. It is. The unwinding / winding unit includes an unwinding / winding motor 35, a mounted portion 21, a power transmission unit that transmits the driving force generated by the unwinding / winding motor 35 to the mounted portion 21, the dancer roller 23, and the dancer roller 23. Each sensor for detecting the position and fixed rollers 24 and 25 are included. A conveyance part is the structure for conveying the packaging material 2 along the conveyance direction DR. The transport unit is configured by a packaging material transport unit 8.

  The setting operation shown in FIG. 14 is executed when the packaging apparatus 1 is turned on or when the wound body 3 is mounted on the mounted portion 21 when the wound body 3 is replaced. When the setting operation is started, first, in step S1, remaining amount information indicating the remaining amount of the packaging material 2 in the wound body 3 is acquired from the IC tag. The reading / writing unit 3R (FIG. 13) accesses the IC tag provided in the core tube 3a of the wound body 3, that is, the recording medium 3b (FIG. 2), and the remaining amount information recorded on the recording medium 3b. To get. The remaining amount information is input from the reading / writing unit 3R to the packaging control unit 201.

  Next, in step S2, the rotation speed is set based on the remaining amount information. The packaging control unit 201 sets the rotation speed of the unwinding / winding motor 35 based on the remaining amount information read from the recording medium 3b by the reading / writing unit 3R.

  When the remaining amount of the packaging material 2 in the wound body 3 is large and the wound diameter of the packaging material 2 is large, the inertia of the wound body 3 is large. For this reason, if the rotational speed of the wound body 3 is too large, there is a possibility of stepping out due to the characteristics of the stepping motor. Further, since the inertia of the wound body 3 is large, the packaging material 2 is loosened, and this looseness becomes an error, and the accuracy of determining the winding diameter of the packaging material 2 is lowered. Therefore, when the remaining amount of the packaging material 2 is large, the rotation speed is reduced.

  When the remaining amount of the wrapping material 2 in the wound body 3 is small and the winding diameter of the wrapping material 2 is small, the inertia of the wound body 3 is small, so the possibility of step-out is reduced. Further, when the winding diameter is small as compared with the case where the winding diameter is large, it is necessary to rotate the wound body 3 more in order to unwind the packaging material 2 having the same length. Therefore, the rotation speed is increased when the remaining amount of the packaging material 2 is small.

  Thus, the packaging control unit 201 sets the rotation speed of the unwinding / winding motor 35 in accordance with the remaining amount of the packaging material 2 in the wound body 3. Then, the setting operation is terminated (“END” in FIG. 14).

  15 and 16 are flowcharts showing the home position return operation of the dancer roller 23 during the initial operation. When a predetermined key is operated after the packaging apparatus 1 is turned on, an initial operation is started. As one of the initial operations, the home position return operation of the dancer roller 23 is executed.

  First, in step S101, it is determined whether or not the retract position sensor 29 is on. The packaging control unit 201 determines whether or not the retracting position sensor 29 is on based on whether or not a detection signal indicating that the retracting position sensor 29 is on is input. When the detection signal is input from the retreat position sensor 29, it is determined that the dancer roller 23 is in the retreat position (YES in step S101). In this case, the process proceeds to step S102, where the main arm 40 is unlocked.

  As described with reference to FIG. 12, when the dancer roller 23 is in the retracted position, the lock pin 47 is engaged with the lock portion 78, and the main arm 40 is locked. In order to make the dancer roller 23 movable, the main arm 40 is unlocked. When the linear solenoid actuator 87 pulls the lock member 79, the lock of the main arm 40 by the lock portion 78 is released. When the user who uses the packaging device 1 manually operates the lock release unit 26, the lock of the main arm 40 by the lock unit 78 may be released.

  The return spring 46 biases the main arm 40 in a direction in which the dancer roller 23 moves from the retracted position toward the limit position. When the lock of the main arm 40 is released, the main arm 40 is rotated by the elastic force of the return spring 46, and accordingly, the dancer roller 23 moves from the retracted position toward the limit position. The position to which the dancer roller 23 moves after the lock of the main arm 40 is released is defined according to the unwinding amount of the packaging material 2 from the wound body 3 at that time.

  If it is determined in step S101 that no detection signal is input from the retract position sensor 29 and the retract position sensor 29 is not on (NO in step S101), the dancer roller 23 is not in the retract position in this case. The main arm 40 is not locked. Since there is no need to unlock the main arm 40, step S102 is skipped.

  Next, in step S103, it is determined whether or not the limit position sensor 27 is on. The packaging control unit 201 determines whether or not the limit position sensor 27 is on based on whether or not a detection signal indicating that the limit position sensor 27 is on is input. If no detection signal is input from limit position sensor 27 and it is determined that limit position sensor 27 is not on (NO in step S103), dancer roller 23 is in a position other than the limit position. In this case, a process of moving the dancer roller 23 to the limit position is performed.

  Specifically, in step S104, unwinding of the packaging material 2 from the wound body 3 is started. The packaging control unit 201 transmits a control signal to the unwinding and winding motor 35 so as to rotationally drive the mounted portion 21 in the direction in which the packaging material 2 is unwound from the wound body 3.

  Subsequently, in step S105, it is determined whether or not the limit position sensor 27 is on. If it is determined that limit position sensor 27 is not on and dancer roller 23 is not in the limit position (NO in step S105), the determination in step S105 is repeated until it is detected that limit position sensor 27 is on. In the meantime, unwinding of the packaging material 2 is continued. When it is detected that limit position sensor 27 is turned on (YES in step S105), the process proceeds to step S106, and unwinding of packaging material 2 from wound body 3 is terminated. The packaging control unit 201 transmits a control signal for stopping the unwinding and winding motor 35.

  If it is determined in step S103 that the limit position sensor 27 is on (YES in step S103), the dancer roller 23 is in the limit position. When the unwinding of the packaging material 2 is completed in step S106, the dancer roller 23 is in the limit position. When it is detected that the dancer roller 23 is in the limit position, the process proceeds to step S107 via the connector 1, and winding of the packaging material 2 around the wound body 3 is started. The packaging control unit 201 transmits a control signal to the unwinding / winding motor 35 so as to rotationally drive the mounted portion 21 in the direction in which the packaging material 2 is wound around the wound body 3.

  Subsequently, in step S108, it is determined whether or not the home position sensor 28 is on. If it is determined that fixed position sensor 28 is not on and dancer roller 23 is not in the fixed position (NO in step S108), the determination in step S108 is repeated until it is detected that fixed position sensor 28 is turned on. It is.

  If it is detected that fixed position sensor 28 is turned on (YES in step S108), it is then determined in step S109 whether fixed position sensor 28 is turned off. If it is determined that fixed position sensor 28 is not turned off but dancer roller 23 is in the fixed position (NO in step S109), step S109 is performed until it is detected that fixed position sensor 28 is turned off. Is repeated.

  While the determinations in step S108 and step S109 are repeated, the winding of the packaging material 2 is continued. When it is determined that the fixed position sensor 28 is turned off and the dancer roller 23 has deviated from the fixed position (YES in step S109), the process proceeds to step S110, and the winding of the packaging material 2 onto the wound body 3 is terminated. The packaging control unit 201 transmits a control signal for stopping the unwinding and winding motor 35.

  When the winding of the packaging material 2 onto the wound body 3 is completed, the dancer roller 23 has moved beyond the fixed position from the limit position, and the dancer roller 23 has moved between the fixed position and the retracted position. ing. From this state, the process of moving the dancer roller 23 to the home position again is performed.

  Specifically, in step S111, unwinding of the packaging material 2 from the wound body 3 is started. The packaging control unit 201 transmits a control signal to the unwinding and winding motor 35 so as to rotationally drive the mounted portion 21 in the direction in which the packaging material 2 is unwound from the wound body 3.

  Subsequently, in step S112, it is determined whether or not the home position sensor 28 is on. If it is determined that fixed position sensor 28 is not on and dancer roller 23 is not in the fixed position (NO in step S112), the determination in step S112 is repeated until it is detected that fixed position sensor 28 is turned on. In the meantime, unwinding of the packaging material 2 is continued. When it is detected that fixed position sensor 28 is turned on (YES in step S112), the process proceeds to step S113, and unwinding of packaging material 2 from wound body 3 is terminated. The packaging control unit 201 transmits a control signal for stopping the unwinding and winding motor 35.

  In this way, the dancer roller returns to the home position during the initial operation. Then, the home position return operation is terminated (“END” in FIG. 16).

  FIG. 17 is a schematic diagram showing the movement of the dancer roller 23 during the home position return operation of the dancer roller 23 during the initial operation. In FIG. 17, a line segment extending in the left-right direction in the drawing indicates a movement range of the dancer roller 23. Three double arrows indicate the detection range of the limit position sensor 27, the detection range of the fixed position sensor 28, and the detection range of the retraction position sensor 29 in order from left to right in the drawing. As described above, the limit position sensor 27, the fixed position sensor 28, and the retracted position sensor 29 detect the magnetic force of the magnet attached to the main arm 40 and are turned on. Therefore, the limit position sensor 27, the fixed position sensor 28, and the retracted position sensor 29 each have a detection range with a predetermined width.

  In steps S104 to S106 described above, the dancer roller 23 moves to the limit position as indicated by the arrow indicated by the symbol A in FIG. In steps S107 to S110, the dancer roller 23 moves beyond the fixed position from the limit position, as indicated by the arrow indicated by symbol B in FIG. In steps S111 to S113, the dancer roller 23 moves to a fixed position as indicated by an arrow C in FIG.

  When the unwinding / winding motor 35 is to be stopped by detecting that the fixed position sensor 28 is turned on, the time until the unwinding / winding motor 35 is decelerated until the stoppage of the unwinding / winding motor 35 is also turned on. Movement of the dancer roller 23 occurs. Since the fixed position sensor 28 has a predetermined detection range, the position where the dancer roller 23 stops when the dancer roller 23 is moved to a fixed position while unwinding the wound body 3, and the wound body 3 There is a possibility that the position at which the dancer roller 23 stops when the dancer roller 23 is moved to a fixed position while winding is shifted.

  In this embodiment, it is set so that the wound body 3 is unwound and the dancer roller 23 is stopped at a fixed position. By determining the direction of movement of the dancer roller 23 when stopping the dancer roller 23 at a fixed position in one direction, the position where the dancer roller 23 stops can be made uniform. Thereby, the fixed position return operation | movement of the dancer roller 23 can be performed reliably.

  The rotational speed of the wound body 3 when unwinding the wound body 3 in steps S104 to S106, winding the wound body 3 in steps S107 to S110, and unwinding the wound body 3 in steps S111 to S113. Is the rotation speed set based on the remaining amount information of the packaging material 2 acquired from the recording medium 3b set in step S2 shown in FIG. The unwinding / winding motor 35 is driven so as to rotate the wound body 3 at a rotation speed set based on the remaining amount information of the packaging material 2, and a fixed position returning operation is executed.

  Thereby, it is not necessary to rotate the unwinding / winding motor 35 at the minimum speed during the home position returning operation, and the unwinding / winding motor 35 can be rotated at an appropriate rotation speed. Moreover, the process for determining the remaining amount of the packaging material 2 is also unnecessary. Therefore, the home position return operation can be executed in a short time, and the time required for the return operation during the initial operation can be shortened.

  The home position return operation of the dancer roller 23 during the initial operation also serves as a sensor check operation for checking whether the home position sensor 28 and the limit position sensor 27 are abnormal. In steps S103 to S106, the dancer roller 23 is moved to the limit position, and in steps SS107 to S113, the dancer roller 23 is moved to a fixed position. By confirming whether or not the movement of the dancer roller 23 can be detected by the fixed position sensor 28 and the limit position sensor 27, the sensor confirmation operation can be surely executed.

  18, 19 and 20 are flowcharts showing the home position return operation of the dancer roller 23 when the wound body is mounted. When the wound body 3 is replaced, if a predetermined key is operated after the wound body 3 is mounted on the mounted portion 21, the dancer roller 23 is returned to the home position.

  First, in step S201, it is determined whether or not the retraction position sensor 29 is on. In step S202, the lock of the main arm 40 is released. The processing in steps S201 and S202 is the same as the processing in steps S101 and S102 described with reference to FIG.

  Next, in step S203, it is determined whether or not the home position sensor 28 is on. The packaging control unit 201 determines whether or not the fixed position sensor 28 is turned on based on the presence or absence of a detection signal indicating that the fixed position sensor 28 is turned on. If a detection signal is input from the fixed position sensor 28 and it is determined that the fixed position sensor 28 is on (YES in step S203), the dancer roller 23 is in a fixed position, but the dancer roller 23 stops. Processing for further aligning the positions is performed.

  Specifically, the process proceeds to step S210 via the connector 2, and winding of the packaging material 2 around the wound body 3 is started. The process of step S210 is the same as the process of step S107 described with reference to FIG.

  Subsequently, in step S211, it is determined whether or not the home position sensor 28 is off. In step S212, the winding of the packaging material 2 around the wound body 3 is finished. In step S213, unwinding of the packaging material 2 from the wound body 3 is started. In step S214, it is determined whether or not the home position sensor 28 is on. In step S215, the unwinding of the packaging material 2 from the wound body 3 is terminated. The processing in steps S211 to S215 is the same as the processing in steps S109 to S113 described with reference to FIG. By unwinding the wound body 3 and stopping the dancer roller 23 at a fixed position, the position where the dancer roller 23 stops within the detection range of the fixed position sensor 28 can be made uniform.

  If it is determined in step S203 that the home position sensor 28 is not on and the dancer roller 23 is in a position other than the home position (NO in step S203), then in step S204, the limit position sensor 27 is on. It is determined whether or not. The processing in step S204 is the same as step S103 described with reference to FIG.

  When it is determined that limit position sensor 27 is on (YES in step S204), dancer roller 23 is moved beyond the fixed position from the limit position and further moved to the fixed position.

  Specifically, the process proceeds to step S216 via the connector 3, and winding of the packaging material 2 onto the wound body 3 is started. In step S217, it is determined whether the home position sensor 28 is on. In step S218, it is determined whether or not the home position sensor 28 is off. In step S219, the winding of the packaging material 2 onto the wound body 3 is finished. The processing in steps S216 to S219 is the same as the processing in steps S107 to S110 described with reference to FIG. Subsequently, steps S213 to S215 are performed through the connector 4.

  If it is determined in step S204 that the limit position sensor 27 is not turned on and the dancer roller 23 is in a position other than the fixed position and the limit position (NO in step S204), the envelope from the wound body 3 is determined in step S205. The unwinding of the material 2 is started. The packaging control unit 201 transmits a control signal to the unwinding and winding motor 35 so as to rotationally drive the mounted portion 21 in the direction in which the packaging material 2 is unwound from the wound body 3.

  Subsequently, in step S206, it is determined whether or not the home position sensor 28 is on. If it is determined that fixed position sensor 28 is not on and dancer roller 23 is not in the fixed position (NO in step S206), then in step S208, it is determined whether limit position sensor 27 is on. If it is determined that the limit position sensor 27 is not on and the dancer roller 23 is still in a position other than the home position and the limit position, the process returns to the determination in step S206. Until either the fixed position sensor 28 or the limit position sensor 27 is turned on, the determination in step S206 and step S207 is repeated, and the unwrapping of the packaging material is continued during that time.

  When it is detected in step S206 that the fixed position sensor 28 is turned on (YES in step S206), the process proceeds to step S207, and the unwinding of the packaging material 2 from the wound body 3 is terminated. In this case, when the fixed position return operation is started, the dancer roller 23 is between the fixed position and the retracted position, and the dancer roller 23 is moved in the direction toward the limit position by unwinding the wound body 3 to thereby move the dancer roller. 23 is stopped at a fixed position. Since the position where the dancer roller 23 is stopped is thereby aligned, the process proceeds to FIG. 19 via the connector 5 and the process is terminated without moving the dancer roller 23 to the limit position.

  If it is detected in step S208 that the limit position sensor 27 is turned on (YES in step S208), the process proceeds to step S209, and the unwinding of the packaging material 2 from the wound body 3 is terminated. In this case, when the fixed position return operation is started, the dancer roller 23 is between the limit position and the fixed position, and the dancer roller 23 is moved in the direction toward the limit position by unwinding the wound body 3 to thereby move the dancer roller. 23 is stopped at the limit position. Therefore, the process of step S216-S219 mentioned above and the process of step S213-S215 are performed next, the winding body 3 is unwound and the dancer roller 23 is stopped in a fixed position.

  Thus, the home position return operation of the dancer roller 23 when the wound body is mounted is performed. Then, the home position return operation is terminated (“END” in FIG. 19).

  FIG. 21 is a schematic diagram showing movement of the dancer roller 23 during execution of the home position return operation of the dancer roller 23 when the wound body is mounted. FIG. 21 shows the movement range of the dancer roller 23 and the detection ranges of the limit position sensor 27, the fixed position sensor 28, and the retracted position sensor 29, as in FIG.

  As described in steps S203 and S210 to S215 described above, when the dancer roller 23 is in a fixed position at the start of the fixed position return operation, the dancer roller 23 is fixed as indicated by an arrow D in FIG. It moves from the position to the retracted position and then returns to the fixed position again.

  As described in steps S204, S216 to S219, and S213 to S215, when the dancer roller 23 is in the limit position at the start of the home position return operation, the dancer roller 23 is moved as indicated by the arrow E in FIG. Move from the limit position beyond the fixed position and move back to the fixed position again.

  As described in steps S205 to S207, when the dancer roller 23 is between the home position and the retracted position at the start of the home position return operation, the dancer roller 23 is moved as shown by the arrow F in FIG. Move to a fixed position.

  As described in steps S205, S208 to S209, S216 to S219, and S213 to S215, when the dancer roller 23 is between the limit position and the fixed position at the start of the fixed position return operation, this is indicated by the symbol G in FIG. As shown by the arrow, the dancer roller 23 once moves to the limit position, moves beyond the fixed position from the limit position, and moves again to return to the fixed position.

  In this way, the winding body 3 is unwound and the dancer roller 23 is stopped at a fixed position, and the movement direction of the dancer roller 23 when stopping the dancer roller 23 at the fixed position is one direction. It has been established. By making the position at which the dancer roller 23 stops constant, the operation of returning the dancer roller 23 to a fixed position can be reliably executed.

  Winding of the wound body 3 in steps S205 to S207 and steps S205 to S209, winding of the wound body 3 in steps S210 to S212, unwinding of the wound body 3 in steps S213 to S215, and steps S216 to S219 The rotation speed of the wound body 3 at the time of winding the wound body 3 is set based on the remaining amount information of the packaging material 2 acquired from the recording medium 3b set in step S2 shown in FIG. Rotational speed. The unwinding / winding motor 35 is driven so as to rotate the wound body 3 at a rotation speed set based on the remaining amount information of the packaging material 2, and a fixed position returning operation is executed.

  Thereby, it is not necessary to rotate the unwinding / winding motor 35 at the minimum speed during the home position returning operation, and the unwinding / winding motor 35 can be rotated at an appropriate rotation speed. Moreover, the process for determining the remaining amount of the packaging material 2 is also unnecessary. Therefore, the home position return operation can be executed in a short time, and the time required for the return operation when the wound body is mounted can be shortened.

  Unlike the initial operation, the fixed position return operation of the dancer roller 23 when the wound body is mounted does not serve as a sensor check operation. In steps S203 and S206, if the fixed position sensor 28 is on, the return operation is terminated without moving the dancer roller 23 to the limit position. By reducing the movement of the dancer roller 23, the time required for the home position return operation can be reliably shortened.

  FIG. 22 is a flowchart showing the operations of the unwinding / winding unit and the conveying unit in the packaging operation. As shown in FIG. 22, when the packaging operation of the packaging object by the packaging device 1 is started, first, in step S301, the remaining amount information indicating the remaining amount of the packaging material 2 in the wound body 3 is obtained from the IC tag. get. In step S302, the rotation speed is set based on the remaining amount information. The processing in steps S301 to S302 is the same as the processing in steps S1 to S2 described with reference to FIG.

  Next, in step S303, it is determined whether or not the number of packages that the packaging apparatus 1 has packaged up to the present time after the start of packaging has reached the designated number of packages. If it is determined that the specified number of packages has not been reached (NO in step S303), then in step S304, the conveyance operation of the packaging material 2 by the conveyance unit is started. The packaging control unit 201 transmits a control signal for driving the transport motor 8m to the transport motor 8m. During the transport operation of the packaging material 2, the packaging control unit 201 transmits a control signal for maintaining the stop of the unwinding / winding motor 35 to the unwinding / winding motor 35. Therefore, unwinding of the packaging material 2 from the wound body 3 is not performed.

  Subsequently, in step S305, it is determined whether or not the transport operation is finished. The packaging control unit 201 calculates the transport distance of the packaging material 2 based on the driving amount of the transport motor 8m. When the packaging material 2 is conveyed by the length of one package, the conveying operation of the packaging material 2 is finished. The packaging control unit 201 transmits a control signal for stopping the conveyance motor 8m to the conveyance motor 8m. When the transporting operation of the packaging material 2 is completed, the dancer roller 23 has moved from the fixed position to the transporting movement position. Next, in step S306, the unwinding operation by the unwinding / winding unit is started.

  FIG. 23 is a flowchart showing a first example of the unwinding operation by the unwinding / winding unit. FIG. 23 is a flowchart showing an example of a subroutine for the unwinding operation performed in step S306.

  Referring to FIG. 23, first, in step S401, unwinding of packaging material 2 from wound body 3 is started. The packaging control unit 201 transmits a control signal to the unwinding and winding motor 35 so as to rotationally drive the mounted portion 21 in the direction in which the packaging material 2 is unwound from the wound body 3. At this time, the packaging control unit 201 rotationally drives the unwinding / winding motor 35 at a rotational speed based on the remaining amount information of the packaging material 2 set in step S302.

  Subsequently, in step S402, it is determined whether or not the home position sensor 28 is on. If it is determined that fixed position sensor 28 is not on and dancer roller 23 is not in the fixed position (NO in step S402), the determination in step S402 is repeated until it is detected that dancer roller 23 is in the fixed position. In the meantime, the unwinding of the packaging material 2 is continued. If it is determined that dancer roller 23 is in a fixed position (YES in step S402), the process proceeds to step S403, and unwinding of packaging material 2 from wound body 3 is terminated. The packaging control unit 201 transmits a control signal for stopping the unwinding and winding motor 35.

  In the unwinding operation, the dancer roller 23 moves from the moving position during conveyance to a fixed position. The movement position at the time of conveyance changes according to the length of one package in the conveyance direction DR. The relationship between the length of one package and the movement position during conveyance is stored in advance in the packaging control unit 201. The packaging control unit 201 derives the moving distance of the dancer roller 23 in the unwinding operation according to the length of one package.

  When the unwinding operation is completed, in step S404, the remaining amount of the packaging material 2 in the wound body 3 is determined. The number of steps of the stepping motor from the start of driving of the wound body 3 by the unwinding / winding motor 35 in step S401 until it is detected in step S402 that the dancer roller 23 is in a fixed position is counted. To do. The winding diameter of the packaging material 2 in the wound body 3 is determined by counting the number of steps of the stepping motor while the dancer roller 23 moves from the moving position to the fixed position during conveyance. By determining the winding diameter of the packaging material 2 based on the number of steps of the unwinding / winding motor 35, the remaining amount of the packaging material 2 in the wound body 3 can be determined.

  If the winding diameter of the packaging material 2 is small, the number of rotations of the packaging material 2 required to move the dancer roller 23 by a certain distance increases, and at this time, the number of steps of the stepping motor increases. When the winding diameter of the wrapping material 2 is large, the number of rotations of the wrapping material 2 required until the dancer roller 23 is moved by a certain distance becomes small, and at this time, the number of steps of the stepping motor becomes small. Therefore, by storing the relationship between the number of steps of the stepping motor and the remaining amount of the packaging material 2 in advance in the packaging control unit 201, the packaging in the wound body 3 is based on the number of steps of the unwinding and winding motor 35. The remaining amount of the material 2 can be determined.

  In step S405, the determination result of the remaining amount of the packaging material 2 determined in step S404 is written in the IC tag as remaining amount information. The reading / writing unit 3R (FIG. 13) accesses the IC tag provided in the core tube 3a of the wound body 3, that is, the recording medium 3b (FIG. 2), and writes the remaining amount information to the recording medium 3b. Thereby, the remaining amount information recorded on the recording medium 3b is updated.

  In the first example shown in FIG. 23, the remaining amount information is written in the IC tag every time the unwinding operation for one package is executed. Then, the unwinding process is terminated (“END” in FIG. 23).

  FIG. 24 is a flowchart showing a second example of the unwinding operation by the unwinding / winding unit. FIG. 24 is a flowchart showing another example of the subroutine for the unwinding operation performed in step S306.

  Referring to FIG. 24, first, in step S501, unwinding of packaging material 2 from wound body 3 is started. The packaging control unit 201 transmits a control signal to the unwinding and winding motor 35 so as to rotationally drive the mounted portion 21 in the direction in which the packaging material 2 is unwound from the wound body 3. At this time, the packaging control unit 201 rotationally drives the unwinding / winding motor 35 at a rotational speed based on the remaining amount information of the packaging material 2 set in step S302.

  Subsequently, in step S502, it is determined whether or not the home position sensor 28 is on. If it is determined that fixed position sensor 28 is not on and dancer roller 23 is not in the fixed position (NO in step S502), the determination in step S502 is repeated until it is detected that dancer roller 23 is in the fixed position. In the meantime, the unwinding of the packaging material 2 is continued. If it is determined that dancer roller 23 is in a fixed position (YES in step S502), the process proceeds to step S503, and unwinding of packaging material 2 from wound body 3 is terminated. The packaging control unit 201 transmits a control signal for stopping the unwinding and winding motor 35.

  When the unwinding operation is completed, the remaining amount of the packaging material 2 in the wound body 3 is calculated in step S504. The number of steps of the stepping motor from the start of driving of the wound body 3 by the unwinding / winding motor 35 in step S501 to the detection of the dancer roller 23 being in a fixed position in step S502 is counted. To do. The remaining amount of the packaging material 2 in the wound body 3 can be calculated based on the number of steps of the stepping motor while the dancer roller 23 moves from the moving position during conveyance to the fixed position.

  Next, in step S505, the calculation result of the remaining amount of the packaging material 2 calculated in step S504 is compared with the current remaining amount information, and the calculation result of the remaining amount of the packaging material 2 is the current remaining amount information. To determine if it is smaller than. That is, whether or not the remaining amount of the packaging material 2 calculated this time is smaller than the remaining amount of the packaging material 2 that has been acquired from the recording medium 3b in step S301 and is currently recorded on the recording medium 3b. Determine whether.

  If it is determined that the calculation result of the remaining amount of packaging material 2 is smaller than the current remaining amount information (YES in step S405), then in step S506, the calculation result of the remaining amount of packaging material 2 is the current remaining amount. 1 is added to the number of times it is determined to be smaller than the information. More specifically, when the number of times that the calculation result of the remaining amount of the packaging material 2 is smaller than the current remaining amount information at the time of step S405 is N (N is an integer equal to or greater than zero), step S506 is performed. The number of times is (N + 1) times. For example, if the number of times that the calculation result of the remaining amount of the packaging material 2 is determined to be smaller than the current remaining amount information at the time of step S505 is 2, the number of times is set to 3 in step S506.

  Next, in step S507, it is determined whether the number of times after the addition in step S506 is equal to or greater than a threshold value. If it is determined that the number of times is equal to or greater than the threshold (YES in step S507), the process proceeds to step S508, and the determination result of the remaining amount of the packaging material 2 determined in step S504 is written in the IC tag as remaining amount information. For example, when the threshold value used for the determination in step S507 is 5, when it can be determined that the calculation result of the remaining amount of the packaging material 2 is smaller than the current remaining amount information for five consecutive times, the recording medium 3b The remaining amount information is written, and the remaining amount information recorded on the recording medium 3b is updated.

  The remaining amount information may be updated by using the latest calculation result of the remaining amount of the packaging material 2 calculated in step S504 as the remaining amount determination result. For example, when the threshold value used for the determination in step S507 is 5, when it is determined that the calculation result of the remaining amount of the packaging material 2 is smaller than the current remaining amount information for five consecutive times, the fifth calculation is performed. The result may be recorded on the recording medium 3b as new remaining amount information.

  Alternatively, the remaining amount information may be updated by using the maximum calculation result as the remaining amount information among the plurality of calculation results of the remaining amount of the packaging material 2 calculated in step S504. For example, when the threshold value used for the determination in step S507 is 5, when it is determined that the calculation result of the remaining amount of the packaging material 2 is smaller than the current remaining amount information for five consecutive times, the five calculation results The largest calculation result may be recorded on the recording medium 3b as new remaining amount information.

  Alternatively, the remaining amount information may be updated by using, as the remaining amount information, a calculation result having the highest frequency among the plurality of calculated results of the remaining amount of the packaging material 2 calculated in step S504. For example, when the threshold value used for the determination in step S507 is 5, and it can be determined that the calculation result of the remaining amount of the packaging material 2 is smaller than the current remaining amount information for five consecutive times, the five calculation results When four of them have the same value but the other one is different, the same value as the four calculation results excluding one calculation result having a different value may be recorded on the recording medium 3b as new remaining amount information. Good.

  Alternatively, when a plurality of stages are set for the remaining amount of the packaging material 2, the remaining amount information may be updated by reducing the remaining amount by one step. For example, when the threshold value used in the determination in step S507 is 5, when it is determined that the calculation result of the remaining amount of the packaging material 2 is smaller than the remaining amount in the current stage for five consecutive times, five calculations are performed. Regardless of the result, the remaining amount may be reduced by one step and recorded on the recording medium 3b as new remaining amount information.

  In this way, the remaining amount information recorded on the recording medium 3b is updated. In step S509, the number of times that the calculation result of the remaining amount of the packaging material 2 is determined to be smaller than the current remaining amount information is initialized. That is, the number of times is set to zero. Then, the unwinding operation is finished.

  If it is determined in step S507 that the number of times is less than the threshold (NO in step S507), the unwinding operation is terminated without updating the remaining amount information.

  If it is determined in step S505 that the calculation result of the remaining amount of the packaging material 2 is equal to or greater than the current remaining amount information (NO in step S505), the process proceeds to step S510, and the calculation result of the remaining amount of the packaging material 2 Is initialized to be smaller than the current remaining amount information. That is, the number of times is set to zero. Then, the unwinding operation is terminated without updating the remaining amount information.

  Alternatively, if it is determined in step S505 that the calculation result of the remaining amount of the packaging material 2 is equal to or greater than the current remaining amount information, the unwinding operation may be terminated without performing anything. That is, if NO in step S505, step S510 shown in FIG. 24 may be skipped and the unwinding operation may be terminated as it is. In this case, even if it is determined that the calculation result of the remaining amount of the packaging material 2 is greater than or equal to the current remaining amount information, the number of times that the calculation result of the remaining amount of the packaging material 2 is determined to be smaller than the current remaining amount information Is not initialized. As a result, the remaining amount information is updated when the number of times that the calculation result of the remaining amount of the packaging material 2 is determined to be smaller than the current remaining amount information is accumulated and becomes equal to or greater than the threshold value.

  For example, when the threshold value used in the determination in step S507 is 5, the calculation result of the remaining amount of the packaging material 2 is determined to be smaller than the current remaining amount information for four consecutive times, and the packaging material is determined by the fifth determination. If the calculation result of the remaining amount of 2 is determined to be larger than the current remaining amount information, and the calculation result of the remaining amount of the packaging material 2 is determined to be smaller than the current remaining amount information in the sixth determination, Since the number of times that the calculation result of the remaining amount of the material 2 is determined to be smaller than the current remaining amount information is accumulated and exceeds the threshold value, the remaining amount information recorded in the recording medium 3b is updated.

  In the second example shown in FIG. 24, the remaining amount information is written into the IC tag only when the remaining amount determination result changes. Then, the unwinding process is terminated (“END” in FIG. 24).

  FIG. 25 is a flowchart showing a third example of the unwinding operation by the unwinding / winding unit. FIG. 25 is a flowchart showing still another example of the subroutine for the unwinding operation performed in step S306.

  In steps S601 to S604 shown in FIG. 25, the same processing is performed as in steps S501 to S504 described with reference to FIG.

  After calculating the remaining amount of the packaging material 2 in the wound body 3, in step S605, the calculation result of the remaining amount of the packaging material 2 calculated in step S604 is compared with the current remaining amount information to determine the packaging material. It is determined whether the calculation result of the remaining amount of 2 is different from the current remaining amount. That is, it is determined whether or not the remaining amount of the packaging material 2 that is acquired from the recording medium 3b in step S301 and is recorded on the recording medium 3b at this time is different from the remaining amount of the packaging material 2 calculated this time. .

  If it is determined that the calculation result of the remaining amount of packaging material 2 is different from the current remaining amount information (YES in step S605), then in step S606, the remaining amount of packaging material 2 calculated in step S604 is determined. It is determined whether the calculation result matches the calculation result of the remaining amount of the packaging material 2 calculated in the previous unwinding operation.

  If it is determined that the calculation result of the remaining amount of the packaging material 2 matches the previous calculation result (YES in step S606), then in step S607, the calculation result of the remaining amount of the packaging material 2 is the previous calculation. 1 is added to the number of times it is determined that the result matches. More specifically, if the number of times that the calculation result of the remaining amount of the packaging material 2 coincides with the previous calculation result at the time of step S606 is N (N is an integer greater than or equal to zero), In S607, the number of times is (N + 1) times. For example, if the number of times that the calculation result of the remaining amount of the packaging material 2 coincides with the previous calculation result is two at the time of step S606, the number of times is set to three in step S607.

  If it is determined in step S606 that the calculation result of the remaining amount of the packaging material 2 does not match the previous calculation result (NO in step S606), the process of adding the number of times in step S607 is skipped.

  Next, in step S608, it is determined whether the number of times after the addition in step S607 is equal to or greater than a threshold value. If it is determined that the number of times is equal to or greater than the threshold (YES in step S608), the process proceeds to step S609, and the calculation result of the remaining amount of the packaging material 2 calculated in step S504 is stored in the recording medium 3b as new remaining amount information. Record. For example, when the threshold value used for the determination in step S608 is 5, when it can be determined that the calculation result of the remaining amount of the packaging material 2 matches the previous calculation result five times in succession, the fifth time The calculation result is written to the recording medium 3b as new remaining amount information, and the remaining amount information recorded on the recording medium 3b is updated.

  In step S610, the number of times that the calculation result of the remaining amount of the packaging material 2 is determined to match the previous calculation result is initialized. That is, the number of times is set to zero. Then, the unwinding operation is finished.

  If it is determined in step S608 that the number of times is less than the threshold (NO in step S608), the unwinding operation is terminated without reflecting the calculation result of the remaining amount of the packaging material 2 in the remaining amount determination result. .

  If it is determined in step S605 that the calculation result of the remaining amount of the packaging material 2 is the same as the current remaining amount information (NO in step S605), the process proceeds to step S611 and the remaining amount of the packaging material 2 is calculated. Initialize the number of times that the result is determined to match the previous calculation result. That is, the number of times is set to zero. Then, the unwinding operation is terminated without reflecting the calculation result of the remaining amount of the packaging material 2 in the remaining amount information.

  Also in the third example shown in FIG. 25, the remaining amount information is written into the IC tag only when the remaining amount determination result changes. Then, the unwinding process is terminated (“END” in FIG. 25).

  Returning to FIG. 22, when the unwinding operation in step S <b> 306 is completed, in step S <b> 307, the above-described heat fusion, printing, perforation formation and cutting that should be performed while the packaging material 2 is stopped by the transport unit. It is determined whether or not all predetermined operations such as the above have been completed. The determination in step S307 is repeated until all the predetermined operations are completed.

  When all the predetermined operations are completed (YES in step S307), the process returns to step S301. After the process of acquiring the remaining amount information of the packaging material 2 in step S301 and the process of setting the rotation speed in step S302, it is determined again whether or not the number of packages packaged so far in step S303 has reached the specified number of packages. Done. Until the number of packages packaged by the packaging device 1 reaches the specified number of packages, the transport of the packaging material 2 and the unwinding of the packaging material 2 from the wound body 3 are repeated according to steps S304 to S307. If it is determined that the specified number of packages has been reached (YES in step S303), a series of packaging operations by the unwinding / winding unit and the conveying unit is terminated ("END" in FIG. 22).

  The setting of the rotation speed based on the remaining amount information of the packaging material 2 in steps S301 and S302 may be performed only at the beginning of the packaging operation. That is, when it is determined in step S307 that all the predetermined operations have been completed, a series of processes related to the packaging operation may be performed so as to return to the determination in step S303.

  The packaging device 1 according to the present embodiment calculates the movement distance of the dancer roller 23 based on the detection result by the position detection unit, and counts the number of steps of the unwinding / winding motor 35 which is a stepping motor. The driving amount of the unwinding / winding motor 35 during the movement of the roller 23 is measured. The remaining amount of the packaging material 2 in the wound body 3 is calculated from the driving amount of the unwinding / winding motor 35 with respect to the movement amount of the dancer roller 23.

  A position detection unit provided to detect that the dancer roller 23 is at a fixed position or a limit position and a driving force for rotating the wound body 3 to unwind the packaging material 2 from the wound body 3 are generated. The remaining amount of the packaging material 2 is calculated using the unwinding / winding motor 35. In other words, the remaining amount of the packaging material 2 in the wound body 3 can be calculated using only other parts that are used, in other words, without adding a dedicated component for calculating the remaining amount of the packaging material 2. Therefore, the configuration of the packaging device 1 can be simplified.

  The packaging material 2 may stick to the wound body 3 due to static electricity or the like, and the packaging material 2 may not be unwound even if the wound body 3 is rotated. When the amount of the wrapping material 2 unwound from the wound body 3 is smaller than the original amount, the driving amount of the unwinding / winding motor 35 for moving the dancer roller 23 by a predetermined distance increases, and the remaining amount of the wrapping material 2 remains. The amount calculation result is smaller than the actual remaining amount. When it is determined that the remaining amount of the packaging material 2 has decreased based on the calculation result that is less than the actual remaining amount of the packaging material 2 and the rotational speed of the unwinding and winding motor 35 is increased, the wound body is excessively fast. There is a possibility that the stepping motor will step out, the wrapping material 2 will loosen, and so on.

  Therefore, in the packaging device 1 of the present embodiment, the remaining amount determination result is updated based on a plurality of calculation results. Even if it is detected once that the rotation speed of the winding / winding motor 35 when calculating the remaining amount of the packaging material 2 is large and the remaining amount of the packaging material 2 is reduced, the remaining amount of the packaging material 2 at that time Rather than using the calculation result as the remaining amount determination result, the remaining amount determination result is updated when it is determined a plurality of times that the remaining amount of the packaging material 2 has decreased. In this way, temporary fluctuations in the calculation result of the remaining amount of the packaging material 2 are not reflected in the remaining amount determination result, and the detection accuracy of the remaining amount of the packaging material 2 can be improved. Therefore, the occurrence of an event of rotating the wound body 3 at an excessive speed relative to the actual remaining amount of the packaging material 2 can be suppressed.

  Even if the amount of the packaging material 2 to be unwound from the wound body 3 is small due to the attachment of the packaging material 2 to the wound body 3, etc., if the attachment of the packaging material 2 is eliminated, the wound body Returning to the original unwinding according to the rotation of 3, the remaining amount of the original packaging material 2 is calculated.

  In the update of the remaining amount information of the packaging material 2, an update is performed so that the remaining amount of the packaging material 2 in the wound body 3 is reduced. Since the wrapping material 2 is unwound from the wound body 3 as the wrapping operation is performed, the wrapping material 2 to be newly written is more than the remaining amount of the wrapping material 2 already recorded on the recording medium 3b. The remaining amount is always smaller.

  FIG. 26 is a flowchart showing another example of the home position return operation of the dancer roller 23 during the initial operation. FIG. 27 is a schematic diagram showing movement of the dancer roller 23 during execution of another example of the home position return operation of the dancer roller 23 during the initial operation.

  Other examples of the return operation of the dancer roller 23 during the initial operation shown in FIGS. 26 and 27 are shown in FIGS. 15 to 17 in the movement of the dancer roller 23 when the dancer roller 23 is stopped at the fixed position. It is different from the example. In steps S701 to S708, the same processing as steps S101 to S108 shown in FIGS.

  If it is detected in step S708 that the home position sensor 28 has been turned on (YES in step S108), the winding of the packaging material 2 around the wound body 3 is then terminated in step S709. Instead of moving the dancer roller 23 beyond a fixed position as in the example shown in FIG. 16, the dancer roller 23 is set to be wound up and stopped at the fixed position.

  In the example shown in FIG. 26, the processes of steps S109 and S111 to S113 shown in FIG. 16 are omitted. Compared to FIG. 17, in FIG. 27, the dancer roller 23 is stopped when reaching the fixed position from the limit position as indicated by the arrow B, and the arrow indicated by the sign C in FIG. There is no movement of the corresponding dancer roller 23. As described above, the movement distance of the dancer roller 23 is shortened, so that the home position return operation can be completed in a shorter time.

  FIG. 28 is a flowchart showing another example of the home position return operation of the dancer roller 23 when the wound body is mounted. FIG. 29 is a schematic diagram showing movement of the dancer roller 23 during execution of another example of the home position return operation of the dancer roller 23 when the wound body is mounted.

  Another example of the operation of returning the dancer roller 23 to the fixed position when the wound body shown in FIGS. 28 and 29 is mounted is shown in FIGS. 18 to 21 in the movement of the dancer roller 23 when the dancer roller 23 is stopped at the fixed position. Different from the example shown. In steps S801 to S809, the same processing as steps S201 to S209 shown in FIG. 18 is performed.

  If it is detected in step S803 that home position sensor 28 is on (YES in step S803), the return operation is terminated as it is without winding and unwinding packaging material 2.

  If it is detected in step S804 that the limit position sensor 27 is on (YES in step S804), the process proceeds to step S810, and in the same manner as step S216 shown in FIG. Winding is started. In step S811, the determination of whether or not the fixed position sensor 28 is on is repeated until it is detected that the fixed position sensor 28 is turned on.

  If it is detected that fixed position sensor 28 is turned on (YES in step S811), winding of packaging material 2 onto wound body 3 is then terminated in step S812. Instead of moving the dancer roller 23 beyond a fixed position as in the example shown in FIG. 20, the dancer roller 23 is wound around the packaging material 2 and stopped at the fixed position.

  When unwinding of the packaging material 2 from the wound body 3 is completed in step S809, the process of winding the packaging material 2 is performed until the dancer roller 23 reaches a fixed position in steps S810 to S812, and the return operation is performed. finish.

  In the example shown in FIG. 28, the processes in steps S210 to S215 and S218 shown in FIGS. 19 and 20 are omitted. Compared to FIG. 21, in FIG. 29, when the dancer roller 23 does not move in the reference sign D and remains stopped at the fixed position, and reaches the fixed position from the limit position as indicated by the arrows E and G. As a result, the dancer roller 23 stops and the return operation is completed. As described above, the movement distance of the dancer roller 23 during the return operation is shortened, so that the home position return operation can be completed in a shorter time.

  Next, a method for manufacturing the wound body 3 will be described. FIG. 30 is a flowchart showing a first method of manufacturing the wound body 3. FIG. 31 is a diagram schematically illustrating a first example of a method for manufacturing the wound body 3.

  In the manufacturing method of the wound body 3, as shown in FIG. 30, first, the core tube 3a is prepared (step S1001). As shown in FIG. 31, a core tube 3a having the recording medium 3b described with reference to FIG. 2 is prepared. Or the core tube 3a which does not have the recording medium 3b may be prepared, such as the case where the recording medium 3b is affixed on the winding start part of the packaging material 2. FIG.

  Next, the packaging material 2 is wound around the core tube 3a (step S1002). As shown in FIG. 31, the wound body 3 is created by winding the packaging material 2 around the core tube 3a.

  Finally, the amount of the packaging material 2 wound around the core tube 3a in step S1002 is written in the recording medium 3b as remaining amount information indicating the remaining amount of the packaging material 2 in the wound body 3 (step S1003). Thereby, when the created wound body 3 is mounted on the packaging device 1, the wound body 3 is moved at an appropriate rotational speed set based on the remaining amount information of the packaging material 2 recorded on the recording medium 3b. It can be rotated. Therefore, the time required for the return operation when the wound body is mounted can be shortened. And the process which concerns on manufacture of the wound body 3 is complete | finished ("End" of FIG. 30).

  In step S1001, the core tube 3a after using the packaging material 2 previously wound may be prepared, and a new packaging material 2 may be wound around the core tube 3a in step S1002. In this case, in step S1003, the amount of the packaging material 2 wound around the core tube 3a in step S1002 is written in the recording medium 3b as remaining amount information indicating the remaining amount of the packaging material 2 in the wound body 3. Then, the remaining amount information already recorded on the recording medium 3b is overwritten and updated.

  Further, when the amount of the packaging material 2 wound around the core tube 3a is determined in advance, the order of step S1002 and step S1003 may be switched.

  FIG. 32 is a flowchart showing a second example of the method for manufacturing the wound body 3. FIG. 33 is a diagram schematically illustrating a second example of the method for manufacturing the wound body 3.

  In the second example of the method for manufacturing the wound body 3, as shown in FIG. 32, first, the core tube 3a is prepared (step S1101). As shown in FIG. 33, a core tube 3a having the recording medium 3b described with reference to FIG. 2 is prepared. Or the core tube 3a which does not have the recording medium 3b may be prepared, such as the case where the recording medium 3b is affixed on the winding start part of the packaging material 2. FIG.

  On the other hand, a hollow cylindrical tube portion 3c is prepared (step S1102). The cylindrical portion 3c has an inner diameter that is slightly larger than the outer diameter of the core tube 3a. Subsequently, the packaging material 2 is wound around the cylindrical portion 3c (step S1103) to form a wound product 3X (step S1104). The preparation of the core tube 3a in step S1101 and the preparation of the wound product 3X in steps S1102 to S1104 may be performed in parallel, and any one process may be performed after any one process. Good. The wound product 3X may be formed at a location different from the installation location of the manufacturing facility for the wound body 3.

  Next, the core tube 3a is inserted into the cylindrical portion 3c, and the wound product 3X and the core tube 3a are integrated (step S1105). For example, the wound product 3X and the core tube 3a can be integrated by inserting the core tube 3a into a hollow portion of the hollow cylindrical tube portion 3c in a state where a rubber band is wound. In this way, the wound body 3 is created.

  Finally, the amount of the packaging material 2 wound around the cylindrical portion 3c in step S1103 is written in the recording medium 3b as remaining amount information indicating the remaining amount of the packaging material 2 in the wound body 3 (step S1106). Thereby, when the created wound body 3 is mounted on the packaging device 1, the wound body 3 is moved at an appropriate rotational speed set based on the remaining amount information of the packaging material 2 recorded on the recording medium 3b. It can be rotated. Therefore, the time required for the return operation when the wound body is mounted can be shortened. And the process which concerns on manufacture of the wound body 3 is complete | finished ("End" of FIG. 32).

  In step S1101, the core tube 3a after using the packaging material 2 previously wound may be prepared, and in step S1105, the core tube 3a and the wound product 3X may be integrated. In this case, in step S1106, the amount of the packaging material 2 wound around the cylindrical portion 3c in step S1103 is written in the recording medium 3b as remaining amount information indicating the remaining amount of the packaging material 2 in the wound body 3. Then, the remaining amount information already recorded on the recording medium 3b is overwritten and updated.

  Further, when the amount of the packaging material 2 wound around the cylindrical portion 3c is determined in advance, the order of step S1105 and step S1106 may be switched.

  Although the embodiment of the present invention has been described as above, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Packaging apparatus, 2 packaging material, 3 winding body, 3R reading / writing part, 3a core tube, 3b recording medium, 5 supply part, 6 accommodating part formation part, 6h heater, 6m pressurization motor, 8 packaging material conveyance part , 8m conveying motor, 9 packaging unit, 10 packaging material supply unit, 11 direction change bar, 12 cutting unit, 13 discharge unit, 15 frame, 20 casing, 20a outer surface, 21 mounted portion, 22 guide hole, 23 dancer roller 24, 25 Fixed roller, 26 Unlocking part, 27 Limit position sensor, 28 Fixed position sensor, 29 Retraction position sensor, 30 Sensor support part, 31, 38, 45, 66 Spring hook part, 35 Unwinding and winding motor, 40 Main arm, 41 First arm part, 42 Second arm part, 43 Bent part, 44 Arm rotation shaft, 46 Return spring, 47 Lock pin, 50 Sub arm, 51 Base end , 52 Tip, 53, 65 Cylindrical part, 55 Gear positioning plate, 72 Intermediate gear, 73 Intermediate pinion gear, 74 Roller gear, 75 Intermediate gear shaft, 78 Lock part, 90 Spring hinge, 101 Drug supply device, 102 Housing, 104 Lower housing, 108, 109 door, 200 overall control unit, 201 packaging control unit, DR transport direction.

Claims (3)

In a packaging device for packaging a packaging object using a wound body in which a long sheet-like packaging material is wound,
The wound body has a recording medium for storing information, and the information includes remaining amount information indicating a remaining amount of the packaging material in the wound body,
The packaging device comprises:
A drive unit for generating a drive force for rotating the wound body;
An information reading unit for reading the remaining amount information stored in the recording medium;
A control unit for controlling the packaging device,
The control unit sets a rotation speed of the wound body based on the remaining amount information read by the information reading unit,
The packaging device comprises:
A transport unit that transports the packaging material unwound from the wound body along a transport path;
A tension member that includes a displacement member that is displaceable in a direction that intersects the conveyance path, and that imparts tension to the packaging material by the displacement member pressing the packaging material;
The displacement member has a fixed position,
The control unit is configured to first store the remaining amount information stored in the recording medium of the wound body when the displacement member is returned to a fixed position after the wound body is mounted on the packaging device. Is read by the information reading unit, the rotational speed of the wound body is set based on the read remaining amount information, and then the driving unit is driven to rotate the wound body at the set rotational speed. And moving the displacement member to the home position,
The packaging device includes a fixed position sensor that detects that the displacement member is at the fixed position, and a limit position sensor that detects that the displacement member is located at a limit position that is further away from the transport path than the fixed position. And further comprising
The controller is
If the fixed position sensor does not detect the displaced member during the fixed position return operation of the displaced member, the wound member is removed from the wound body until the fixed position sensor or the limit position sensor detects the displaced member. Unwind the packaging material
When the fixed position sensor detects the displacement member, the fixed position return operation of the displacement member is terminated,
When the limit position sensor detects the displacement member, the fixed position sensor detects the displacement member, and winds the packaging material around the wound body until the displacement member is not detected again. from the wound body into position sensor detects the displacement member unwinding the packaging material, to exit the position return operation of the displacement member,
If the fixed position sensor detects the displacement member during the fixed position return operation of the displacement member, the packaging material is wound around the wound body until the fixed position sensor no longer detects the displacement member. Then, the packaging material is unwound from the wound body until the fixed position sensor detects the displacement member, and the fixed position return operation of the displacement member is finished . The information reading unit is configured to be able to write the remaining amount information to the recording medium,
The control unit measures the drive amount of the drive unit while the drive unit is driving the wound body, and determines the remaining amount of the packaging material in the wound body based on the measurement result. Judgment,
The packaging device according to claim 1, wherein the control unit controls the information reading unit to write a determination result of the remaining amount of the packaging material on the recording medium as the remaining amount information. A plurality of stages are set for the remaining amount of the packaging material,
The control unit reads the information so that when the remaining amount of the packaging material is determined to be smaller than the remaining amount in the current step, the remaining amount reduced by one step is written to the recording medium as the remaining amount information. The packaging apparatus of Claim 2 which controls a part.