Manufacturing method for wound body

Abstract

To provide a manufacturing method for a wound body using a core body whose packaging material has been used up.SOLUTION: In a manufacturing method for a wound body, which uses a core body in which when the core body is attached to an outer periphery of a support shaft rotatably provided, a first recessed part fits to a first protrusion part formed at a position of a base end part of the support shaft, so that the first recessed part can rotate integrally with the support shaft and when the core body is attached to the outer periphery of the support shaft, a second recessed part engages with a second protrusion part formed at a position of a tip part of the support shaft, so that the first protrusion part and the first recessed part are positioned in a circumferential direction of the support shaft, a new long sheet is wound around the core body whose previously wound long sheet has been used up.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a wound body in a state where a packaging material, which is a strip-shaped sheet, is wound.

Background Art

[0002] There is a pharmaceutical packaging device that packages pharmaceuticals using a packaging material that is a strip-shaped sheet. An example of a support device for the packaging material included in such a pharmaceutical packaging device is described in Patent Document 1. The configuration described in Patent Document 1 has a support shaft (paper feed drum) protruding from a base (referred to as a "machine body" in the description of Patent Document 1; the same applies to the following parentheses). The support shaft is rotatably supported by the base. A core body (core cylinder) is attached to the outer circumference of the support shaft. A packaging material (packaging paper) is wound around the outer circumference of the core body to form a roll-shaped wound body. Pharmaceuticals can be packaged for the packaging material sequentially drawn out from the wound body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, recently, for example, resource conservation has been demanded.

[0005] Therefore, an object of the present invention is to provide a method for manufacturing a wound body in which the core body can be repeatedly used by reusing the core body after the packaging material has been used up.

Means for Solving the Problems

[0006] The present invention relates to a core body which is formed in a cylindrical shape, around which a long sheet can be wound on the outer periphery, has a cylindrical inner peripheral portion, has one end portion and the other end portion, and in the inner peripheral portion, a first recess provided at the position of the one end portion and recessed radially outward, and a second recess provided from the position of the one end portion to the position of the other end portion, recessed radially outward, and having a smaller amount of recess radially outward with respect to the inner peripheral portion than the first recess, are formed. The core body is rotatably provided on the outer periphery of a support shaft and can be attached from the one end portion side. When attached to the outer periphery of the support shaft, the first recess fits into a first protrusion provided at the position of the base end portion of the support shaft, so that it can rotate integrally with the support shaft. When attached to the outer periphery of the support shaft, the second recess engages with a second protrusion provided at the position of the tip end portion of the support shaft, so that the first protrusion and the first recess are aligned in the circumferential direction of the support shaft. A method for manufacturing a wound body is provided, which includes winding a new long sheet around the core body after using up the previously wound long sheet using the core body.

[0007] According to this, the core body can be used repeatedly.

Effect of the Invention

[0008] In the present invention, by reusing the core body after using up the packaging material, the core body can be used repeatedly.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0010] Next, an embodiment of the combination of the winding body 6 and the drug packaging device 1 according to the present invention will be taken up and described. In the following description, the "base end side" corresponds to the left side in FIG. 2, and the "tip end side" corresponds to the right side in FIG. 2. Also, the "axial direction" in the following description refers to the axial direction of the support shaft 31.

[0011] -Overview of the packaging section- FIG. 1 schematically shows a packaging section 2 which is a part for packaging drugs in the drug packaging device 1. The drug (not shown) is, for example, a tablet or a powder. The packaging material 62 used in this drug packaging device 1 is in the form of a belt-shaped long sheet. The material of the packaging material 62 is, for example, paper or resin. The packaging material 62 is conveyed in the longitudinal direction (the direction of the arrow F shown). The packaging material 62 is wound around the outer periphery of the core 61 to form a roll-shaped winding body (packaging material roll) 6. That is, the winding body 6 is constituted by winding the long sheet-shaped packaging material 62. In the winding body 6, the packaging material 62 is wound around the outer periphery of the core 61 in a state of being folded in half at the center in the width direction (short side direction). The packaging material 62 is unwound from the winding body 6. The drug packaging device 1 packages the drug using the packaging material 62 unwound from the winding body 6. The packaging section 2 in the drug packaging device 1 is located in the order of the packaging material supply section 3, the packaging material conveyance section 4, and the package forming section 5 from the upstream side to the downstream side in the conveyance direction of the packaging material 62. These will be described below. For convenience, the packaging material supply section 3 will be described later.

[0012] -Packaging material conveyance section- The packaging material conveying unit 4 conveys the packaging material 62 in the longitudinal direction and supplies it to the package forming unit 5 on the downstream side in the conveying direction. The packaging material conveying unit 4 mainly includes a tension adjusting mechanism 41 and a folding bar 42. The tension adjusting mechanism 41 is a mechanism that adjusts the tension by stretching the packaging material 62 between a plurality of rollers 411 to 413 with variable axial distances. The tension adjusting mechanism 41 of the present embodiment is combined with, for example, two fixed rollers 411 and 412 with immovable axial positions and one dancer roller 413 that moves so that the axial position is curved with respect to the base. The folding bar 42 deflects the conveying direction of the packaging material 62 conveyed upward from the tension adjusting mechanism 41 obliquely downward. The packaging material conveying unit 4 can be provided with, for example, a printing unit 43 that prints prescription information of the drug and the like on the surface of the packaging material 62.

[0013] -Package Forming Unit- The package forming unit 5 is a part that supplies the drug to the packaging material 62 according to the prescription and packages each package by adhering the packaging material 62. The package forming unit 5 mainly includes a triangular plate 51, a hopper 52, and a packaging material adhesion part 53. The triangular plate 51 is located on the downstream side in the conveying direction of the folding bar 42, and is a part that forms a V-shaped cross-section in the longitudinal direction view by pushing open one side and the other side of the packaging material 62 folded in half in the width direction. The hopper 52 has a part of the lower part 522 formed with a reduced cross-sectional area compared to the upper part 521 inserted into the V-shaped space 62S with a cross-section opened by the triangular plate 51. The drug supplied according to the prescription is supplied to the packaging material 62 via the inside of the hopper 52 by a drug supply mechanism (not shown) provided above the hopper 52. The packaging material adhesion part 53 is a part that adheres the packaging material 62 supplied with the drug one by one by heat welding or the like. The package forming unit 5 can also be provided with, for example, a perforation forming part (not shown) for forming perforations to facilitate cutting of the packaging material 62 adhered by the packaging material adhesion part 53.

[0014] -Packaging Material Supply Unit- The packaging material supply unit 3 is a part that sends the packaging material 62 to the subsequent packaging material conveyance unit 4. A winding body 6 is arranged in the packaging material supply unit 3 so as to be rotatable in the circumferential direction. By rotating the winding body 6, the packaging material 62 is drawn out from the winding body 6 in the longitudinal direction.

[0015] As shown in FIG. 2, the packaging material supply unit 3 includes a support shaft 31. The support shaft 31 is provided so as to protrude from a base (not shown). A part of the packaging material conveyance unit 4 (the tension adjustment mechanism 41 shown in FIG. 1) is also provided on this base. The support shaft 31 has a substantially cylindrical shape. The support shaft 31 has a cylindrical outer peripheral portion. The support shaft 31 has a base end portion (the left portion in the drawing) and a tip end portion (the right portion in the drawing). The base end portion of the support shaft 31 is supported by the base. The support shaft 31 includes a main shaft portion 311 having a constant diameter dimension, and a base end shaft portion 312 located on the base end side of the main shaft portion 311 and having a larger diameter dimension than the main shaft portion 311. A step is formed between the main shaft portion 311 and the base end shaft portion 312 as shown in the drawing.

[0016] The support shaft 31 is provided rotatably with respect to the base and supports the winding body 6 (core body 61). The support shaft 31 is driven to rotate by a drive unit such as a stepping motor (not shown) provided inside the base. The support shaft 31 rotates in both the drawing-out direction and the drawing-in direction of the packaging material 62. Further, corresponding to the supply of the packaging material 62 to the package forming unit 5, the rotation of the support shaft 31 is intermittent. The support shaft 31 is cantilever-supported with respect to the base, and the tip end portion of the support shaft 31 is open. Therefore, as shown in FIG. 2, the core body 61 in the winding body 6 is arranged at the axially extended position on the open side of the support shaft 31, and by inserting the winding body 6 axially from the tip end side toward the base end side, the winding body 6 (only the core body 61 is shown in FIG. 4) can be attached to the support shaft 31 as shown in FIG. 4. The winding body 6 is attached to the support shaft 31 so as not to be relatively rotatable.

[0017] The support shaft 31 of this embodiment is formed to have a longer axial length than the winding body 6. For this reason, as shown in FIG. 4, a part (mounting auxiliary part 31B) of the support shaft 31 protrudes from the core body 61 in the mounted state (the state of being mounted on the support shaft main body 31A). However, it is not limited to this, and the other end (described later) of the core body 61 and the tip of the support shaft 31 may coincide in the mounted state.

[0018] In addition, a part on the tip side of the support shaft 31 protruding from the core body 61 (the part where the guide protrusion 317 is formed) is a mounting auxiliary tool 31B that is separate from the support shaft main body 31A, which is the base end side part of the support shaft 31, and is mounted on the support shaft main body 31A. This mounting auxiliary tool 31B can be used in combination with the winding body 6 of this embodiment. The mounting of the mounting auxiliary tool 31B to the support shaft main body 31A is, for example, by diverting the fitting structure for attaching the tip cover provided on the support shaft provided in the existing drug packaging device (removing the tip cover and then attaching the mounting auxiliary tool 31B), or by adhesion to the existing support shaft (not limited to this, and various mounting modes are possible). The support shaft main body 31A has a cylindrical outer peripheral portion. The mounting auxiliary tool 31B becomes a mounting auxiliary part that is a part of the support shaft 31 in a state of being mounted on the support shaft main body 31A. This configuration can be formed into the support shaft 31 of this embodiment, for example, by mounting it so as to replace the lid member provided at the tip of a short support shaft. With the mounting auxiliary part 31B attached to the tip of the support shaft main body 31A, the support shaft 31 of this embodiment can be formed without significantly modifying the support shaft provided in the existing drug packaging device. For this reason, the combination of the winding body 6 and the drug packaging device 1 of this embodiment can be realized at low cost. However, for example, in a newly manufactured support shaft 31, instead of such a separate structure, the support shaft main body 31A and the mounting auxiliary part 31B may have an inseparable integral structure.

[0019] As shown in Fig. 2, on the base end shaft portion 312 of the support shaft 31, a plurality (four in this embodiment) of hooking protrusions 313 as the first protrusions are formed. The plurality of hooking protrusions 313 to 313 are provided at regular intervals (with a gap) in the circumferential direction (rotation direction). Each hooking protrusion 313 protrudes radially outward from the outer peripheral surface of the base end portion of the support shaft 31. Each hooking protrusion 313 extends axially for a predetermined distance in the tip direction from the base end of the support shaft 31. A rod-shaped packing break detection pin 314 protrudes radially from a part of the plurality of hooking protrusions 313 to 313 (one hooking protrusion 313 every other one in the circumferential direction in this embodiment). The tip of the packing break detection pin 314 is set to be located radially outside the outer peripheral surface of the core body 61 when the winding body 6 is mounted on the support shaft 31. Further, the hooking protrusion 313 provided with the packing break detection pin 314 is provided with a notch 315 that penetrates radially and extends axially.

[0020] The packaging material break detection pin 314 is biased toward the tip side (right side in the figure) in the axial direction of the support shaft 31 by the biasing force of a spring (not shown) provided inside the support shaft 31. When the wound body 6 around which the packaging material 62 is wound is attached to the support shaft 31, the packaging material break detection pin 314 is pushed laterally by the packaging material 62 laminated radially on the outer periphery of the core body 61, and thus is moved toward the base end side in the axial direction against the spring biasing force. In the core body 61 of the wound body 6, at the portion that coincides with the packaging material break detection pin 314 when attached to the support shaft 31, a notch 611 that penetrates in the radial direction and extends in the axial direction is provided, similar to the support shaft 31. The notch 611 is arranged to coincide with the notch 315 of the support shaft 31 in the circumferential direction. For this reason, the core body 61 may be rotated in the circumferential direction with respect to the support shaft 31 by an operator for alignment of the notch 611 (this point will be described later). When the packaging material 62 is completely drawn out from the wound body 6 (that is, when only the core body 61 remains), the pushing by the packaging material 62 stops, so that the spring-biased packaging material break detection pin 314 moves toward the tip side in the axial direction and enters the notch 611 (see Fig. 4). By detecting with a sensor or the like that the packaging material break detection pin 314 has entered the notch 611 in this way, it is possible to detect a break in the packaging material. By detecting that all of the packaging material 62 has been unwound from the wound body 6, for example, the packaging material supply unit 3 can be automatically stopped.

[0021] On the outer peripheral surface of the support shaft 31, a deviation restricting portion 316 protrudes. At least one deviation restricting portion 316 (although not shown in the figure, there are two in this embodiment) is provided. When a plurality of deviation restricting portions 316 are provided as in this embodiment, these plurality of deviation restricting portions 316 are provided at regular intervals (with a gap) in the circumferential direction. In this embodiment, the two deviation restricting portions 316 are positioned at equal intervals (that is, at an interval of 180 degrees in terms of angle) in the circumferential direction. Also, in this embodiment, the deviation restricting portion 316 is provided at the same position as any one of a plurality (four in this embodiment) of the engaging protrusions 313 to 313 in the circumferential direction position. The deviation restricting portion 316 is, for example, spherical or hemispherical, and is urged radially outward by a spring provided inside the support shaft 31, and is a protrusion with a part protruding from the outer peripheral surface of the support shaft 31. The deviation restricting portion 316 is provided on the outer peripheral surface of the support shaft 31 so as to be able to protrude and retract. This deviation restricting portion 316 engages with a step portion 612 described later in the core body 61. For this reason, it is possible to prevent the core body 61 from being displaced axially with respect to the support shaft 31, and the winding body 6 can be reliably attached to the support shaft 31.

[0022] At the tip of the support shaft 31 (main shaft portion 311), at least one (four in this embodiment) guide protrusion 317 as a second protrusion portion is formed. When a plurality of guide protrusions 317 are formed as in this embodiment, these plurality of guide protrusions 317 to 317 are provided at regular intervals (with a gap) in the circumferential direction. Each guide protrusion 317 protrudes radially outward from the outer peripheral surface of the tip of the support shaft 31. Each guide protrusion 317 protrudes between the plurality of engaging protrusions 313 to 313 in the circumferential direction position. That is, in the axial view, each engaging protrusion 313 and each guide protrusion 317 are alternately positioned. In this embodiment, each engaging protrusion 313 and each guide protrusion 317 are alternately positioned at equal intervals in the circumferential direction. Also, each guide protrusion 317 has a smaller amount of protrusion radially outward with respect to the outer peripheral portion of the support shaft main body 31A than each engaging protrusion 313.

[0023] As shown in FIG. 2, the guide projection 317 integrally includes a main body portion 3171 having a constant width and a reduced portion 3172 provided on the tip side of the main body portion 3171 and having a reduced width dimension toward the tip. The reduced portion 3172 has an inclined surface at the widthwise end. In this embodiment, this inclined surface is formed linearly in a radial view, but is not limited thereto, and may have other shapes such as a curved line shape. Further, in this embodiment, this inclined surface is symmetric with respect to the axial direction, but may be an asymmetric shape.

[0024] As the core 61 is inserted into the support shaft 31, by abutting against the inner peripheral surface 617 of the core 61 with respect to the guide projection 317, the circumferential alignment of the core 61 with respect to the support shaft 31 can be performed (the alignment of the core 61 will be described later). FIG. 5 shows the state. Incidentally, in FIG. 5, for ease of understanding, the guide projection 317 (two-dot chain line) is shown to move in the axial direction with respect to the core 61, but actually, contrary to the illustration, the core 61 moves in the axial direction with respect to the guide projection 317. At this time, the support shaft 31 and the core 61 are relatively rotated in the circumferential direction for alignment. The support shaft 31 may be stationary in the circumferential direction, and the core 61 may rotate in the circumferential direction with respect to the support shaft 31, or the core 61 may be stationary in the circumferential direction, and the support shaft 31 may rotate in the circumferential direction with respect to the core 61. Both the support shaft 31 and the core 61 may rotate in the circumferential direction, respectively.

[0025] The guide projection 317 is provided at a position different from that of the engaging projection 313 in the axial direction. Specifically, the guide projection 317 is provided at the tip of the support shaft 31, and the engaging projection 313 is provided at the base end of the support shaft 31. By being provided at different positions in this way, after the circumferential alignment of the core body 61 is completed, the engaging recess 615 of the core body 61 can be fitted to the engaging projection 313 of the support shaft 31 with a time margin. In particular, since the guide projection 317 of the present embodiment is provided at the tip of the support shaft 31, the alignment of the core body 61 is performed at the beginning rather than at the end of the insertion operation. Therefore, the operability is good with respect to the mounting of the winding body 6 on the support shaft 31. Also, on the side of the core body 61, a mechanism (the engaging recess 615 in the present embodiment) for transmitting the rotational force from the support shaft 31 and a mechanism for circumferential alignment (the guide recess 616 in the present embodiment) can be provided dispersedly in the axial direction without concentrating them at one end in the axial direction of the core body 61. For this reason, it is possible to suppress a situation where the strength of one end in the axial direction of the core body 61 is significantly reduced compared to the strength of the other end.

[0026] -Core of the winding body- As shown in FIG. 2, the core 61 of the wound body 6 has a cylindrical (circular cylindrical) or tubular (circular tubular) shape with a circular cross-section in the radial direction. The core 61 has a cylindrical inner peripheral portion. As shown in FIG. 1, the wrapping material 62 is wound around the outer peripheral surface of the core 61. The outer diameter dimension of the core 61 is constant in the axial direction. Therefore, no step appears on the outer peripheral surface of the core 61, so that the wrapping material 62 can be wound without making a crease. The core 61 is attached and detached (mounted and removed) by being moved axially with respect to the outer periphery of the support shaft 31 in the wrapping material supply unit 3. The core 61 is aligned in the circumferential direction of the support shaft 31 and mounted on the outer periphery of the support shaft 31. The core 61 has one end portion and the other end portion. The one end portion is a portion close to the support shaft 31 in FIG. 2, and the other end portion is a portion far from the support shaft 31 in FIG. 2. The core 61 is mounted on the support shaft 31 from the one end portion side as a normal direction (mounting direction). At the time of mounting, the core 61 is moved axially from the tip end portion of the support shaft 31 toward the base end portion. The core 61 has a notch 611 at the base end portion in the direction (normal mounting direction) at the time of mounting on the support shaft 31. The notch 611 is provided at a position corresponding to the wrapping material break detection pin 314 that protrudes radially outward from the support shaft 31 when the core 61 is mounted on the support shaft 31. The notch 611 penetrates the core 61 in the radial direction and has a space that opens at the base end of the core 61. In this space, the wrapping material break detection pin 314 is movable in the axial direction of the support shaft 31. This movement is made after the wrapping material 62 has been pulled out from the wound body 6 and has disappeared (FIG. 4 shows the state after the movement). Incidentally, this notch 611 can also be used as a visual or tactile clue when an operator identifies the direction of the wound body 6.

[0027] As shown in FIG. 2, a stepped portion 612 is formed at the inner peripheral portion of the core body 61 on the tip side. The stepped portion 612 is intermittently provided at a plurality of positions (four positions in this embodiment) in the circumferential direction. A displacement restricting portion 316 protruding from the support shaft 31 engages with this stepped portion 612. Therefore, it is possible to prevent the core body 61 from being displaced axially with respect to the support shaft 31, and the winding body 6 can be reliably attached to the support shaft 31. On the other hand, since the displacement restricting portion 316 is spring-biased, for example, when removing the core body 61 from the support shaft 31, if the core body 61 is axially moved with a force that overcomes the biasing force of this spring, the core body 61 moves with respect to the support shaft 31. Therefore, the work can be carried out without any particular trouble when removing the core body 61 from the support shaft 31.

[0028] The core body 61 includes a plurality of magnet holding portions 613 to 613 that hold a combination of permanent magnets corresponding to a magnetic detection unit such as a magnetic sensor provided by the packaging material supply unit 3 for identifying the winding body 6. Among the plurality of magnet holding portions 613, permanent magnets are arranged in a selected predetermined number of magnet holding portions 613 to 613 (in the drawing, the magnet holding portions 613 in a state where no permanent magnet is arranged are shown). The "identification of the winding body 6" specifically means identifying the material of the packaging material 62. In the plurality of magnet holding portions 613 to 613, the magnetic detection unit detects and identifies the number of magnet holding portions 613 in which permanent magnets are arranged, the polarity of the permanent magnets, the strength of the magnetic force, etc. Note that in a drug packaging device configured to perform the identification of the winding body 6 by means other than magnetism, such as electromagnetic detection using a wirelessly identifiable RFID tag such as an IC chip or optical detection using a two-dimensional code, or a drug packaging device in which the magnetic detection unit is removed or invalidated by modification, this magnet holding portion 613 is unnecessary.

[0029] The core body 61 is provided with a hooking recess 615 as a first recess, a guiding recess 616 as a second recess, and an inner circumferential surface portion 617 on its inner circumference. A plurality of sets of the hooking recess 615, the guiding recess 616, and the inner circumferential surface portion 617 are provided in the circumferential direction. These can be provided at equal intervals in the circumferential direction. In the present embodiment, four sets of these portions 615 to 617 are provided at equal intervals in the circumferential direction. However, only one set can be provided, or a plurality of sets can be provided at unequal intervals. Also, as shown in FIGS. 2 and 3, these portions 615 to 617 are provided asymmetrically in the axial direction.

[0030] The hooking recess 615 is provided on the inner circumference on one end side of the core body 61. The hooking recess 615 transmits a rotational force in the circumferential direction to the support shaft 31 by fitting into the hooking protrusion 313 provided on the support shaft 31 in the mounted state on the support shaft 31. That is, in a state where the core body 61 is mounted on the outer circumference of the support shaft main body 31A, the hooking protrusion 313 and the hooking recess 615 are fitted together, so that the support shaft main body 31A and the core body 61 can rotate integrally around the central axis of the outer circumferential portion of the support shaft main body 31A. The number of the hooking recesses 615 matches the number of the hooking protrusions 313 on the support shaft 31. Also, the number of sets consisting of the guiding recess 616 and the inner circumferential surface portion 617 matches the number of the guiding protrusions 317 on the support shaft 31. However, the number of the hooking recesses 615 can be made larger than the number of the hooking protrusions 313 on the support shaft 31. Also, the number of sets consisting of the guiding recess 616 and the inner circumferential surface portion 617 can be made larger than the number of the guiding protrusions 317 on the support shaft 31.

[0031] The guide recess 616 is provided on the inner circumference of the core body 61 so as to extend from one end side in the axial direction toward the other end side in the axial direction. The inner diameter dimension of the guide recess 616 is larger than the outer diameter dimension of the support shaft 31. The guide recess 616 has a smaller amount of recess radially outward with respect to the inner peripheral portion of the core body 61 (more specifically, the inner peripheral surface, and even more specifically, the inner peripheral surface of the inner peripheral surface portion 617 or the thick portion 619) than the engaging recess 615. Therefore, it is possible to prevent a decrease in the strength of the core body 61 due to the recess. The guide recess 616 is formed over the entire circumference in the circumferential direction of the core body 61 at the position of one end portion of the core body 61 (the portion 6162a shown in FIG. 3). Therefore, when the core body 61 is inserted externally with respect to the mounting assist portion 31B, it is not necessary to align the mounting assist portion 31B and the core body 61 around the central axis, so that the operation can be facilitated. When the core body 61 is mounted on the support shaft 31, the guide recess 616 engages with the guide projection 317 to perform circumferential positioning with respect to the support shaft 31. That is, when the core body 61 is mounted on the outer circumference of the support shaft main body 31A, the guide projection 317 and the guide recess 616 are engaged with each other, so that the guide projection 317 and the guide recess 616 are aligned in the circumferential direction around the central axis of the outer peripheral portion of the support shaft main body 31A. This guide recess 616 is located on the other end side and has a positioning portion 6161 that has a constant width dimension (circumferential dimension) and extends in the axial direction, and a guiding portion 6162 that extends continuously in the axial direction on one end side of the positioning portion 6161 and has a width dimension (circumferential dimension) that expands toward the one end side. The width dimension of the positioning portion 6161 is substantially the same as the width dimension of the guide projection 317. Specifically, it is larger (slightly larger) than the width dimension of the guide projection 317 to such an extent that axial movement of the core body 61 with respect to the guide projection 317 can be allowed.

[0032] Among the guiding portions 6162, in the portion where the inner peripheral surface portion 617 overlaps in the axial direction, the circumferential dimension decreases as it goes from one end side to the other end side. Accordingly, the core body 61 is moved in the circumferential direction in accordance with this decrease (see Fig. 5. However, Fig. 5 shows the movement and non-movement of the core body 61 and the guide projection 317 in the opposite manner to the actual situation). Then, the engaging recess 615 of the core body 61 coincides with the engaging projection 313 of the support shaft 31. Thus, the core body 61 rotates with respect to the support shaft 31 and is aligned in the circumferential direction.

[0033] Regarding the portions 6162a (see Fig. 3) of the guiding portions 6162 where the inner peripheral surface portion 617 does not overlap in the axial direction, the function of moving the core body 61 in the circumferential direction by the contact with the guide projection 317 is not exerted. This portion 6162a functions to facilitate the attachment of the core body 61 to the support shaft 31. That is, the inner diameter dimension of the guiding portion 6162 is larger than the outer diameter dimension of the support shaft 31 and is exposed at the end portion on one axial end side of the core body 61. In the present embodiment, it is exposed over the entire circumference in the circumferential direction. That is, the inner diameter of the end portion on one axial end side of the core body 61 has a "loose" relationship with a margin with respect to the outer diameter of the support shaft 31 due to the exposed guiding portion 6162. For this reason, the insertion of the winding body 6 (core body 61) into the support shaft 31 is easier compared to a configuration without a dimensional margin. Incidentally, since the winding body 6 in a state where the wrapping material 62 is wound around the core body 61 is heavy (particularly, a new winding body 6 is particularly heavy because the wrapping material 62 has not been consumed at all), the ease of insertion is a great advantage for the user of the drug packaging device 1. Incidentally, this function is also the function of the thin portion 618 described later.

[0034] Here, in the guiding portion 6162, the portion 6162a where the inner circumferential surface portion 617 does not overlap in the axial direction can be said to be a "free region" that allows the rotation of the core body 61 without restriction. Further, the positioning portion 6161 can be said to be a "restricted region" where the rotation of the core body 61 is substantially impossible (specifically, there is only a circumferential play to the extent that the guiding concave portion 616 of the core body 61 is axially displaced with respect to the guiding protrusion 317 of the support shaft 31). Also, in the guiding portion 6162, the portion 6162b where the inner circumferential surface portion 617 overlaps in the axial direction can be said to be a "transition region" where the rotatable range of the core body 61 is smaller on the other end side than on the one end side in the axial direction. The guiding concave portion 616 extends from one end side in the axial direction to the other end side and is continuous in the order of the free region, the transition region, and the restricted region.

[0035] The inner circumferential surface portion 617 is a portion that is circumferentially adjacent to the guiding concave portion 616. The inner circumferential surface portion 617 is made thicker (has a larger radial dimension) than the guiding concave portion 616. The inner circumferential surface portion 617 is provided on the inner circumference of the core body 61 so as to extend from the end portion on the other end side in the axial direction toward the one end side in the axial direction, and does not reach the edge of the core body 61 at the one end side in the axial direction, and the tip is located between the axial center and the edge at the one end side in the axial direction. In the present embodiment, the tip is formed at a position adjacent to the other end side in the axial direction of the engaging concave portion 615. The tip portion of the inner circumferential surface portion 617 is opposite to the shape of the guiding portion 6162, and the circumferential dimension decreases as it goes from the other end portion side to the one end portion side. The shape of the inner circumferential surface portion 617 is an asymmetric shape in the axial direction.

[0036] The surface of the inner peripheral portion 617 is a curved surface that curves with a constant curvature in the circumferential direction. The circumferential curvature of the surface of the inner peripheral portion 617 is the same (substantially the same) as the circumferential curvature of the outer peripheral surface of the support shaft 31. Since the surface of the inner peripheral portion 617 is a curved surface with an extent, the inner peripheral portion 617 makes surface contact with the outer peripheral surface of the support shaft 31 when the core body 61 is mounted. Here, for example, in a configuration where a plurality of protrusions extending in the axial direction are formed on the inner peripheral surface of the core body, line contact is made with the outer peripheral surface of the support shaft, and due to "tightening" described later, deformation (distortion) may occur in the main body of the core body that is floating with respect to the support shaft. In contrast, in the present embodiment, since the surface of the inner peripheral portion 617 makes surface contact with the outer peripheral surface of the support shaft 31, the possibility of the above-described deformation (distortion) occurring in the core body 61 can be reduced.

[0037] Since the inner peripheral portion 617 is thick and the guide recess 616 is thin, a step is formed between the inner peripheral portion 617 and the guide recess 616. That is, the circumferential edges of the positioning portion 6161 and the guiding portion 6162 of the guide recess 616 are defined by the inner peripheral portion 617. The inner peripheral portion 617 has a core body side inclined surface 6171 that defines the width direction (circumferential direction) edge of the guiding portion 6162 of the guide recess 616 (see FIGS. 4 and 5).

[0038] When attempting to mount the core body 61 including the engaging recess 615, the guide recess 616, and the inner peripheral portion 617 on the support shaft 31 from the one end side, first, the guiding portion 6162 of the core body 61 will be positioned with respect to the guiding protrusion 317 of the support shaft 31. When the core body 61 is further moved in the axial direction, it changes so that the positioning portion 6161 of the core body 61 is positioned with respect to the guiding protrusion 317 (see the position change indicated by the arrow in FIG. 5).

[0039] The positioning portion 6161 is also a guiding portion that guides the guiding protrusion 317. The positioning portion 6161 as this guiding portion is provided at the position of the other end of the core body 61, is continuous with the guiding portion 6162, and guides the guiding protrusion 317 so that when the core body 61 is mounted on the outer periphery of the support shaft main body 31A, the engaging protrusion 313 and the engaging recess 615 are maintained in a state of being aligned in the circumferential direction around the central axis of the outer peripheral portion of the support shaft main body 31A. According to this, when mounting the core body 61 on the support shaft main body 31A, it is not necessary to intentionally maintain the state where the support shaft main body 31A and the core body 61 are aligned around the central axis, so the operation can be facilitated.

[0040] Further, the guiding portion 6162 has a reduced width dimension (circumferential dimension) as it advances in the direction from one end to the other end of the core body 61, and guides the guiding protrusion 317 so that when the core body 61 is mounted on the outer periphery of the support shaft main body 31A, the engaging protrusion 313 and the engaging recess 615 are aligned in the circumferential direction around the central axis of the outer peripheral portion of the support shaft main body 31A. According to this, when mounting the core body 61 on the support shaft main body 31A, it is not necessary to intentionally align the support shaft main body 31A and the core body 61 around the central axis, so the operation can be facilitated.

[0041] Here, when the guiding protrusion 317 is located at the circumferential end of the guiding portion 6162, the edge of the guiding portion 6162, that is, the core body side slope 6171 abuts against the guiding protrusion 317. Thereby, the positioning portion 6161 of the core body 61 is guided to coincide with the guiding protrusion 317. Then, when the core body 61 is further moved in the axial direction, while the guiding protrusion 317 and the positioning portion 6161 of the core body 61 are engaged, a part of the engaging protrusion 313 and a part of the engaging recess 615 are fitted. When the core body 61 is further moved in the axial direction, the positioning portion 6161 of the core body 61 comes off from the guiding protrusion 317, the engaging protrusion 313 and the engaging recess 615 are completely fitted, and finally the state shown in FIG. 4 is obtained.

[0042] The edge of the guiding portion 6162 (the core body side inclined surface 6171) may come into contact with the inclined surface of the reduced portion 3172 of the guiding projection 317 (see FIG. 5). Here, the inclination in the axial direction of the core body side inclined surface 6171, which is the edge of the guiding portion 6162, and the inclined surface of the reduced portion 3172 of the guiding projection 317 are substantially the same. For this reason, the contact is made smoothly.

[0043] As described above, according to the core body 61 of the present embodiment, the guiding recess 616 facilitates the attachment to the support shaft 31, and the inner peripheral surface portion 617 ensures the strength of the core body.

[0044] Further, the core body 61 includes a thin portion 618 and a thick portion 619. The thin portion 618 is provided on the inner periphery at one end side in the axial direction. Further, in the state where the core body 61 is attached to the support shaft 31, the thin portion 618 fits into the base end shaft portion 312 of the support shaft 31. The thick portion 619 is provided on the inner periphery at the other end side in the axial direction, and in the state of being attached to the support shaft 31, the thick portion 619 fits into the main shaft portion 311 of the support shaft 31. The thick portion 619 is thicker than the thin portion 618. The thin portion 618 corresponds to the guiding recess 616 described above, and the thick portion 619 corresponds to the inner peripheral surface portion 617 described above. Although the thin portion 618 is formed for a different purpose from the guiding recess 616 described above, the formation range on the inner periphery of the core body 61 is the same as that of the guiding recess 616 described above. It should be noted that the formation ranges of the thin portion 618 and the guiding recess 616 can also be made different. Although the thick portion 619 is formed for a different purpose from the inner peripheral surface portion 617 described above, the formation range in the core body 61 is the same as that of the inner peripheral surface portion 617 described above. It should be noted that the formation ranges of the thick portion 619 and the inner peripheral surface portion 617 can also be made different.

[0045] Here, with the manufacturing of the wound body, a phenomenon called "shrinkage" may occur due to the stress remaining in the packaging material after winding (the force that shrinks in the longitudinal direction), the surrounding temperature, or humidity. Due to this "shrinkage", a compressive force in the radial direction is applied to the core body. Due to this compressive force, the thin portion may deform radially inward, and the outer periphery of the core body may become an uneven shape. Then, the feeding of the packaging material may become uneven, and the packaging of the drug may become unstable.

[0046] According to the core 61 of the present embodiment, the thin-walled portion 618 is fitted to the base end shaft portion 312 of the support shaft 31, and the thick-walled portion 619 is fitted to the main shaft portion 311 of the support shaft 31. The base end shaft portion 312 of the support shaft 31 has a larger diameter than the main shaft portion 311. The outer diameter dimension of the base end shaft portion 312 of the support shaft 31 and the inner diameter dimension of the thin-walled portion 618 of the core 61 are set to be the same dimension to the extent that they can be inserted. Further, the outer diameter dimension of the main shaft portion 311 of the support shaft 31 and the inner diameter dimension of the thick-walled portion 619 of the core 61 are set to be the same dimension to the extent that they can be inserted. By fitting the core 61 to the support shaft 31, the gap between the support shaft 31 and the core can be suppressed. Therefore, it is possible to eliminate a gap that allows the core 61 to deform to an extent that affects the feeding of the packaging material 62. Thus, the core 61 physically supported by the support shaft 31 can counteract the compression force of winding caused by the wound packaging material 62. In particular, in the region 619a on the other end side of the core 61 from the axial center, the thick-walled portion 619 occupies a larger proportion in the circumferential direction than the thin-walled portion 618. Therefore, the region 619a greatly contributes to counteracting the compression force of winding.

[0047] -Reuse of used core- The core 61 is formed of, for example, a hard resin. Therefore, the core 61 can be repeatedly used many times by being reused after the packaging material 62 is used up. Thereby, for example, it is possible to contribute to the conservation of petroleum resources. Reuse is performed by winding a new packaging material 62 around the used core 61 collected from the user of the drug packaging device 1. By winding a new packaging material 62 around the reused core 61, a new wound body 6 is manufactured. In order to smoothly perform the collection, regarding the core 61 part among the wound bodies 6 delivered to the user, by taking the form of lending, it is possible to encourage the user to return the core 61 in the form of returning the core 61.

[0048] The winding of the new wrapping material 62 around the used core 61 can be performed, for example, by winding the new wrapping material 62 around a separate core (such as a paper tube) having an inner diameter larger than the outer diameter of the core 61, and then attaching the prefabricated wrapping material roll (replacement winding body) to the used core 61. When this method is adopted, a spacer such as a rubber ring can be interposed between the used core 61 and the separate core to adjust the difference between the outer diameter of the core 61 and the inner diameter of the separate core.

[0049] The manufacture of the new winding body 6 can be carried out by the supplier of the winding body 6, or the supplier of the winding body 6 can instruct the user, enabling the user to perform the operations related to the manufacture. In the latter case, the used core 61 will be left with the user without being recycled. The instruction from the supplier of the winding body 6 to the user may be explicit or implicit. The latter implicit instruction also includes simply transferring the replacement winding body to the user.

[0050] -Possibility of form change- The above describes one embodiment of the present invention. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

Explanation of reference numerals

[0051] 1 Medicine packaging device 2 Packaging section 3 Wrapping material supply section 31 Support shaft 31A Support shaft body 31B Mounting auxiliary section (mounting auxiliary tool) 311 Main shaft section 312 Base end shaft section 313 Hanging protrusion, first protrusion section 317 Guide protrusion, second protrusion section 4 Wrapping material conveyance section 5 Package forming section 6 Winding body 61 Core 615 Hook recess, first recess 616 Guide recess, second recess 6161 Positioning part, guide 6162 Inducing part 617 Inner peripheral surface part 618 Thin-wall part 619 Thick-wall part 62 Packaging material

Claims

【Claim 1】 A core body, formed in a cylindrical shape, capable of winding a long sheet around its outer periphery, having a cylindrical inner peripheral portion, one end portion and the other end portion, wherein on the inner peripheral portion, a first recess provided at the position of the one end portion and recessed radially outward; and a second recess provided from the position of the one end portion to the position of the other end portion, recessed radially outward, and having a smaller amount of recess radially outward with respect to the inner peripheral portion than the first recess, are formed, which can be mounted on the outer periphery of a rotatably provided support shaft from the one end portion side, when mounted on the outer periphery of the support shaft, the first recess fits into a first protrusion provided at the position of the base end portion of the support shaft, so that it can rotate integrally with the support shaft, when being mounted on the outer periphery of the support shaft, the second recess engages with a second protrusion provided at the position of the tip end portion of the support shaft, so that the first protrusion and the first recess are aligned in the circumferential direction of the support shaft, and a core body is used, A method for manufacturing a wound body, including winding a new long sheet around the core body after using up the previously wound long sheet.

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