JP5069775B2 - Roll body holder and film packaging machine provided with the same - Google Patents

Description

  The present invention relates to a roll body holder and a film packaging machine including the roll body holder.

  A so-called pillow packaging machine or the like is widely known as a film packaging machine for packaging an article using a packaging film wound around a roll body.

  As such a pillow packaging machine, for example, as disclosed in Japanese Patent Application Laid-Open No. 2003-267602 (see FIG. 38), an article supply unit that supplies an article to be packaged, and a film that supplies a packaging film What has a supply part, the packaging part which packages an article | item with a film, and the carrying-out part which carries out a package is known as a general structure.

JP 2003-267602 A (see FIG. 38)

Such a film packaging machine needs to replace | exchange regularly the roll body which wound the film for packaging to the film supply part which supplies the film for packaging. In a general film packaging machine, the film supply unit is fixed to the main body frame of the film packaging machine, and the film supply unit is provided with a configuration that allows the roll body to be replaced from the front side of the packaging machine. It has been.
A configuration is employed in which after a used roll body is pulled out from a holding rod provided in the film supply unit, a new roll body is inserted into the holding rod and replaced.

The operation when the roll body is mounted on the film supply unit will be specifically described.
After inserting the holding rod of the film supply unit into the roll core, the holding rod and the roll are used to prevent idling of the roll body in the film supply unit and shaking of the rotating shaft when the roll body rotates. It is necessary to fix the core part of the body by bringing it into close contact. In order to bring the holding rod and the roll body into close contact with each other, as shown in FIGS. 12 to 15, the holding rod 200 is connected to one fixing tool 250 attached to the body frame 105 side portion of the film packaging machine. One end cap 210 has a configuration in which a winding core portion (hollow portion of the cylindrical body 222) that is a rotating shaft of a roll body 220 formed by winding the film 224 around the cylindrical body 222 is fitted.

With such a configuration, the core portion of the roll body 220 (the hollow portion of the cylindrical body 222) is inserted into the holding rod 200 (FIG. 12), and the insertion-side tip portion of the roll body 220 is the first end cap. When the attachment position 210 is reached, the roll body 220 must be pushed into the holding rod 200 while lifting the insertion-side tip portion of the roll body 220 (FIG. 13).
Then, after inserting the other second end cap 240 into the holding rod 200, the rear end portion of the roll body 220 is lifted and the roll body 220 is further pushed into the holding rod 200, and then the roll body 220. The other second end cap 240 is fitted between the core portion of the rear end portion and the holding rod 200 (FIG. 14). Finally, the other fixing tool 250 that fixes the other second end cap 240 is fixed to the holding rod 200, and the roll body 220 is attached to the holding rod 200 (FIG. 15).

In FIG. 15, the first end cap 210 is mounted in a state where the distal end portion thereof matches the position of the insertion-side distal end portion of the roll body 220, but when the operator pushes the roll body 220 too much, the roll body 220 is moved to. The insertion state (insertion amount) of the first end cap 210 is not constant, and the center position of the film 224 supplied to the packaging unit may be shifted.
Thus, in order to attach the roll body 220 to the holding rod 200, the insertion side distal end portion of the roll body 220 must be lifted with the arm deeply inserted into the back side of the lower part of the film packaging machine, Improvement of the structure is desired in that it is difficult for women and the elderly to work alone, and it is difficult to adjust the mounting position of the roll body 220 on the rod 200 (first end cap 210). It was.

  In addition, the film packaging machine can wrap many kinds of objects to be packaged, and the width of the roll body (film width dimension) to be mounted on the film packaging machine varies depending on the object to be packaged. When changing, it is also necessary to change the type of roll body to be mounted. Since a normal user wraps many kinds of articles with one film wrapping machine, it seems that the situation of such a change operation of the roll body is often performed. When the type of the roll body is changed, the width dimension of the film unwound from the roll body is naturally changed. Therefore, if the roll body whose width dimension has been changed is directly attached to the roll body holder before the roll body is changed, the center position in the width direction of the film supplied to the packaging portion of the film packaging machine is shifted.

In order to eliminate the shift of the film supply position when the type of roll body is changed in this way, fine adjustment of the mounting position of the roll body to the roll body holder is necessary. When the adjustment mechanism is added, there is a problem that the manufacturing cost of the film packaging machine increases.
On the other hand, since the inexpensive film wrapping machine that is widely used does not have a mechanical fine adjustment mechanism, it takes time to finely adjust the mounting position of the roll body to the roll body holder. In many cases, there is a problem that the mobility of the film wrapping machine is lowered, and the solution of these problems has been strongly desired.

  Therefore, the present invention makes it easy to replace the roll body that supplies the film in the film packaging machine, and supplies it to the packaging section even when the width of the film wound around the roll body is changed. An object of the present invention is to provide an inexpensive roll body holder capable of easily setting the center position in the width direction of the film to be fixed to a fixed position, and a film packaging machine including the roll holder.

In order to solve the above-mentioned problems, the present invention has been intensively studied, and as a result, has arrived at the following configuration.
That is, a roll body holder to which a roll body on which a long film is wound is mounted, and a rod that is inserted through the core of the roll body, and is detachably fixed on the rod at an interval. The first and second end caps that are fitted to both ends of the winding core portion to hold the roll body, and are attached to the rod, and the mounting position of the first end cap to the rod is defined. A spacer position defining portion for defining a position of an end portion of the spacer attached to the rod, and the first end cap is in contact with the end portion of the core portion. A flange portion, a fitting portion that fits into the core portion in a state in which the core portion is in contact with the flange portion, and a slope portion that gradually increases in diameter toward the fitting portion and reaches the fitting portion. , The space A connecting recess is formed on the connecting surface, and when the slope part is mounted on the roll body, the roll body is placed on the slope part by the inner peripheral surface on one end side of the core part, By pushing in the direction of the flange portion, one end side of the core portion is guided while coming into contact with the inclined surface of the slope portion, and the fitting portion is located on one end side of the core portion at a position where the end portion is in contact with the flange portion. A guide portion for insertion is formed, and the spacer is constituted by a spacer formed in a plurality of types of width dimensions according to the width dimension of the film wound around the roll body to be mounted, The connecting member of the spacer directly connected to the first end cap is provided with a connecting convex portion that can be fitted into the connecting concave portion.

  An article supply unit for supplying the article; a film supply unit on which a film for packaging an article formed on the roll body can be mounted; and a packaging unit for packaging the article with the film unwound from the film supply unit; An invention as a film packaging machine comprising a carry-out section for carrying out a package in which the article is film-wrapped by the packaging section, and the roll body holder is used in the film supply section. There is also.

According to the roll body holder and the film packaging machine including the roll body according to the present invention, after inserting the rod into the core of the roll body, the rotation axis of the roll body can be obtained simply by pushing the roll body into the rod. The core part of the roll body to be formed can be fitted into the first end cap attached to the rod in a positioned state. The first end cap attached to the rod has a slight difference in diameter from the outer dimension of the rod at the boundary with the rod on the roll body mounting side, and the slope of the slope is loose. Since it has such a slope, it can be made to fit in the 1st end cap in the core part of a roll body only by pushing the insertion side front-end | tip part of a roll body into a rod.
As described above, when attaching the roll body to the roll body holder, it is not necessary to lift the roll body with the arm inserted deeply into the film supply section in an unnatural posture, greatly increasing the labor when replacing the roll body Can be reduced.

  In addition, a flange portion that serves as a stopper, a spacer that defines the attachment position of the first end cap to the rod, and the width of the roll body should be disposed at the distal end of the first end cap on the insertion side. It is a very simple configuration in which the spacer position defining portion that defines the position of the spacer is simply disposed on the rod, and the roll body holder can be provided at low cost. According to this configuration, the pushing position of the roll body can be set to an appropriate position by simply pushing the roll body until the insertion side end of the roll body comes into contact with the flange portion, and the roll body is attached to the rod. It becomes possible to mount the roll body at an appropriate position of the rod without finely adjusting the state.

It is principal part sectional drawing which shows the state which mounted | wore the roll body holder concerning this embodiment with the roll body. It is a perspective view of the protrusion piece and spacer in the roll body holder of FIG. It is a front view of the 1st end cap in the roll body holder of FIG. It is sectional drawing in the AA line in FIG. It is a front view which shows an example of a structure of the film packaging machine which comprises the roll body holder concerning this embodiment. It is sectional drawing which shows the schematic state of each step in the case of mounting | wearing a roll body with the roll body holder of this embodiment. It is sectional drawing which shows the schematic state of each step in the case of mounting | wearing a roll body with the roll body holder of this embodiment. It is sectional drawing which shows the schematic state of each step in the case of mounting | wearing a roll body with the roll body holder of this embodiment. It is sectional drawing which shows the schematic state of each step in the case of mounting | wearing a roll body with the roll body holder of this embodiment. It is sectional drawing which shows an example of other embodiment of the roll body holder concerning this invention. It is sectional drawing which shows an example of other embodiment of the roll body holder concerning this invention. It is sectional drawing which shows the general state of each step in mounting | wearing a roll body to the roll body holder concerning a prior art. It is sectional drawing which shows the general state of each step in mounting | wearing a roll body to the roll body holder concerning a prior art. It is sectional drawing which shows the general state of each step in mounting | wearing a roll body to the roll body holder concerning a prior art. It is sectional drawing which shows the general state of each step in mounting | wearing a roll body to the roll body holder concerning a prior art.

Hereinafter, embodiments of a roll holder according to the present invention and a film packaging machine including the roll holder will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a main part showing a state in which a roll body is mounted on the roll body holder according to the present embodiment. FIG. 2 is a perspective view of a protruding piece and a spacer in the roll body holder of FIG. 3 is a front view of a first end cap in the roll body holder of FIG. 1, and FIG. 4 is a cross-sectional view taken along line AA in FIG.
The roll body holder 1 in this embodiment holds a roll body 10 in which a packaging film 14 is wound around an outer peripheral surface of a cylindrical body 12 that is a core portion formed of a synthetic resin or paper. is there. Of course, after the film 14 is wound around the outer peripheral surface of the cylindrical body 12 that is the winding core portion, the cylindrical body 12 is taken out and the roll body 10 composed of only the film 14 may be used. When the roll body 10 composed only of such a film 14 is employed, the hollow part of the roll body 10 corresponds to the core part.

  As shown in FIG. 1, the roll body holder 1 includes a rod 20 that is inserted into a hollow portion of a cylindrical body 12 (hereinafter simply referred to as a cylindrical body 12) that is a winding core, and a truncated cone disposed on the rod 20. In order to make the rotation axis of the roll body 10 on the first end cap 30 side parallel to the central axis of the rod 20, the required distance from the first end cap 30 is set to A second end cap 40 that is detachably attached to the rod 20 and a position where the first end cap 30 is attached to the rod 20 is defined. The rod 20 has a projecting piece 22 and a spacer 24 that are detachable. ing.

The spacer position defining portion will be described. As shown in FIG. 2, the protruding piece 22 as a spacer position defining portion for defining the position where the spacer 24 is attached to the rod 20 is formed by split ring bodies 22 a and 22 b that hold the outer peripheral surface of the rod 20. Yes. Each of the split ring bodies 22a and 22b is formed with a through hole penetrating in the plate thickness direction, and a connection screw 22c as a connection convex portion is attached to the through hole.
The projecting piece 22 is mounted on the outer peripheral surface of the rod 20 by attaching the split ring bodies 22a and 22b to hold the rod 20, and then fixing the split ring bodies 22a and 22b to each other by screws 22D. It is attached to 20 outer peripheral surfaces. The protruding piece 22 fixed to the rod 20 in this way is in a state where two connecting screws 22c are erected as shown in FIG.
The protruding piece 22 in the present embodiment can be attached to an arbitrary position in the extending direction of the rod 20 (the extending direction of the one-dot chain line in FIG. 2), but the protruding piece 22 is fixed at a predetermined position of the rod 20. You may make it do.

  The spacer 24 will be described. As shown in FIG. 2, a connection hole 24 a serving as a connection recess into which the connection screw 22 c of the protrusion piece 22 can enter is formed on the connection end surface of the spacer 24 on the protrusion piece 22 side. The connection hole 24a can also be formed in a screw hole into which the connection screw 22c is screwed. In addition to the connection hole 24 a, the spacer 24 is provided with a through hole 24 b that penetrates in the plate thickness direction around the axis of the rod 20, and the through hole 24 b is connected to the first end cap 30. A connecting screw 24c serving as a convex portion is mounted from the end face on the protruding piece 22 side. As the connecting screw 24c, a screw having a dimension longer than the width dimension of the spacer 24 is used in accordance with the thickness of the spacer 24 actually used.

  Depending on the film width of the roll body 10 to be mounted on the rod 20, a plurality of spacers 24 may be mounted continuously on the rod 20. The second and subsequent spacers are formed in the same shape as the spacer 24. When the second and subsequent spacers are connected to the spacer 24, the spacer 24 and the second and subsequent spacers can be connected by fitting the connecting screw 24 c described above into the connection hole 24 a of the spacer 24.

The first end cap 30 will be described. As shown in FIG. 3 and FIG. 4, the first end cap 30 is formed in a truncated cone shape whose outline shape is elongated. A portion serving as a bus line connecting the small diameter portion 32 and the large diameter portion 34 of the truncated cone constitutes a slope portion 35 for placing the roll body 10 and sliding the roll body 10 to the large diameter portion 34. Further, a flange portion 38 is formed at the distal end portion of the large-diameter portion 34 that is a fitting portion that is fitted into the core portion of the roll body 10. The core portion of the roll body 10 is positioned in a state where the roll body 10 is positioned by pushing the roll body 10 into the rod 20 until the insertion end (core end portion) of the roll body 10 abuts against the flange portion 38. The large-diameter portion 34 can be fitted into the.
The first end cap 30 is inserted into the rod 20 until the first end cap 30 abuts against the spacer 24 with the flange portion 38 as an insertion-side tip. A connecting concave portion 37 into which a connecting screw 24 c provided on the spacer 24 can be fitted is formed at the insertion end of the first end cap 30. The depth of the connecting recess 37 is formed to be equal to or greater than the protruding dimension of the connecting screw 24c.

Further, an insertion hole 36 for inserting the rod 20 is formed in the rotating shaft portion of the first end cap 30. The diameter dimension φ1 of the small-diameter portion 32 of the first end cap 30 is shown in FIG. 4 because a member thickness necessary to withstand an impact when the insertion-side tip portion of the roll body 10 collides is secured. Thus, the rod 20 is formed to have a diameter slightly larger than the outer diameter φr.
The outer diameter dimension (φ2) of the large-diameter portion 34 that is the fitting portion of the first end cap 30 is formed to be equal to the inner diameter dimension of the cylindrical body 12, and the hollow portion of the cylindrical body 12 that is the winding core portion. It is formed over a required range in the insertion direction. By using the first end cap 30 formed in this way, the hollow portion of the cylindrical body 12 can be surely aligned with the rotation axis of the rod 20, and the packaging film 14 is unwound in a stable state. It becomes possible.

The first end cap 30 formed in this way is inserted into the connecting concave portion 37 formed at the distal end portion on the insertion side to the rod 20 by inserting the protruding portion of the connecting screw 24c of the spacer 24 into the spacer 24 and the first end cap 30. 1 end cap 30 is connected. The spacer 24 is connected to a protruding piece 22 that is positioned and attached to the rod 20 in accordance with the film width dimension of the roll body 10 to be attached to the rod 20. That is, the first end cap 30 connected to the spacer 24 is also attached to the position of the rod 20 in a state adapted to the film width dimension of the roll body 10 to be mounted.
The spacer 24 to be mounted on the rod 20 corresponding to the film width of the roll body 10 is provided with a list of the film width dimensions created in advance and the spacers 24 to be used. It is not necessary to calculate the combination of the spacers 24 to be used every time it is changed, and the spacers 24 specified in the list may be attached to the rod 20 (connected to the protruding piece 22). Accordingly, even a user who is unfamiliar with the replacement work of the roll body 10 can easily and appropriately switch the roll body 10 (change the size of the roll body 10 to be used).

  Moreover, the inclination angle with respect to the axis of the rod 20 of the slope portion 35 that connects the small diameter portion 32 and the large diameter portion 34 of the first end cap 30 in the present embodiment is formed at an angle of 12 ° or less. Further, at least the slope portion 35 of the first end cap 30 is covered with a low friction agent (for example, a fluororesin typified by Teflon (registered trademark)) capable of reducing the friction coefficient. As described above, the slant angle of the slope portion 35 is relaxed and the surface treatment for reducing the frictional force is performed, so that the roll body 10 to the first end cap 30 (roll body holder 1) can be reduced. The mounting operation can be easily performed.

  The roll body holder 1 having such a configuration is detachably attached to the main body frame 105 of the film packaging machine in an arrangement in which the first end cap 30 side is the back side. In the present embodiment, the first end cap 30 and the second end cap 40 have the same shape.

Next, a method for attaching the roll body 10 to the film packaging machine 100 including the roll body holder 1 according to the present embodiment will be described. FIG. 5 is a front view illustrating an example of a configuration of a film packaging machine (pillow packaging machine) including the roll body holder according to the present embodiment. Moreover, FIGS. 6-9 is sectional drawing which shows the general state of each step at the time of mounting | wearing a roll body with the roll body holder of this embodiment, respectively.
The schematic configuration of the film packaging machine 100 in the present embodiment is the same as that of the film packaging machine 100 in the prior art. That is, as shown in FIG. 5, an article supply unit 110 that supplies an article B to be packaged, a film supply unit 120 that supplies a packaging film 14, and a packaging unit 130 that packages the article B with the film 14 And a carry-out unit 140 for carrying out the package H. Since the configurations of the article supply unit 110, the packaging unit 130, and the carry-out unit 140 in the pillow packaging machine are known, detailed description thereof is omitted here.

  First, as shown in FIG. 6, the spacer 24 and the second member 24 are arranged on the protruding piece 22 fixed to the rod 20 (near the main body frame 105 side) of the roll holder 1 disposed in the film supply unit 120 of the film packaging machine 100. Each end cap 30 is attached. The protruding piece 22 is fixed to the rod 20 with the outer peripheral surface of the rod 20 held between the split ring bodies 22a and 22b. The spacer 24 is positioned in the protruding piece 22 by contacting the surface on which the connection hole 24 a is formed as the protruding portion 22 and fitting the connection screw 22 c of the protruding piece 22 into the connecting hole 24 a of the spacer 24. Connected. Subsequently, the surface of the first end cap 30 on which the connection recess 37 is formed is brought into contact with the surface of the spacer 24 from which the connection screw 24 c protrudes, and the connection screw 24 c is inserted into the connection recess 37. It is mounted in a state of being positioned on the rod 20. Of course, the first end cap 30 may be more firmly fixed to the rod 20 by screwing or the like as required.

  As shown in FIG. 7, the user of the film packaging machine 100 has a hollow cylindrical body 12 that is a core part of the roll body 10 on which the film 14 having a width corresponding to the spacer 24 to which the rod 20 is attached is wound. The rod 20 is inserted into the part. Thereafter, the roll body 10 is suspended from the rod 20, and the user pushes the roll body 10 toward the main body frame 105 along the axis of the rod 20. The user simply pushes the roll body 10 toward the main body frame 105 even after the insertion-side distal end portion (core end portion) of the roll body 10 reaches the position of the small diameter portion 32 of the first end cap 30. . On the back side from the position of the small diameter portion 32, although the load when the roll body 10 is pushed into the rod 20 is slightly increased, it is not necessary to lift the roll body 10. As shown in FIG. 6, the inner peripheral surface of the insertion end of the roll body 10, which is the inner peripheral surface on one end side of the winding core portion, is placed on the slope portion 35 (the bus bar of the truncated cone) of the first end cap 30. After being formed, it is gradually guided to the large diameter portion 34 along the slope portion 35.

In addition to the inclination angle of the slope portion of the first end cap 30 with respect to the axis of the rod 20 being 12 ° or less, surface treatment with a low friction agent for reducing the frictional force in the slope portion 35 is performed. Yes. Thereby, even if the user is a woman or an elderly person, the inner peripheral surface of the insertion-side tip portion of the roll body 10 is easily put on the slope portion 35 to the large diameter portion 34 along the slope surface of the slope portion 35. Can be induced.
If the step difference due to the dimensional difference between the outer diameter dimension φr of the rod 20 and the outer diameter dimension φ1 of the small diameter portion 32 of the first end cap 30 causes the insertion resistance of the distal end portion of the roll body 10 to be inserted into the slope portion 35. When it is too large, curved surface processing (so-called rounded portion formation) for smoothly connecting the insertion-side distal end portion of the cylindrical portion 12 and the inner peripheral surface of the insertion-side distal end portion of the cylindrical portion 12 may be performed.

The large-diameter portion 34 that is the fitting portion of the first end cap 30 is formed to have a diameter that is equal to the inner diameter of the hollow portion of the cylindrical body 12 that is the winding core portion, and to the hollow portion of the cylindrical body 12. It is provided in a required range in the insertion direction (the axial direction of the rod 20). That is, when the insertion-side distal end portion of the roll body 10 reaches the large-diameter portion 34, the load when the roll body 10 is pushed down is reduced (returns to the initial load state in which the rod 20 is inserted into the roll body 10). As a result, the operator can grasp that the large diameter portion 34 has been fitted into the core portion of the roll body 10.
Moreover, since the flange part 38 formed in larger diameter than the large diameter part 34 is provided in the edge part by the side of the main body frame 105 of the large diameter part 34, an operator rods the roll body 10 more than necessary. Even if it is going to be inserted to the back side (main body frame 105 side) 20, the insertion-side tip of the roll body 10 abuts on the flange portion 38 to prevent over-insertion of the roll body 10, and to the roll body holder 1. The roll body 10 can be mounted while being always positioned.

After a part of the distal end portion on the insertion side of the roll body 10 is brought into contact with the flange portion 38, the user inserts the second end cap 40 into the rod 20 as shown in FIG. 40 is attached to the rotating shaft of the roll body 10 (the hollow portion of the cylindrical body 12). In the present embodiment, the second end cap 40 is formed in the same manner as the first end cap 30, and the surface treatment for applying the same low friction agent to the slope portion is performed. Even when the cap 40 is attached, it is not necessary to lift the near side portion of the roll body 10. Also in this respect, the work load at the time of mounting the roll body 10 is greatly reduced as compared with the prior art.
As described above, after the second end cap 40 is attached to the rod 20 with a required interval from the first end cap 30, the second end cap 40 is prevented from being displaced further to the front side of the second end cap 40. When the fixing tool 50 is attached, the mounting of the roll body 10 to the roll body holder 1 is completed as shown in FIG.

  After mounting the roll body 10 to the roll body holder 1 of the film supply unit 120 as described above, the film packaging machine 100 is operated to perform the packaging process of the article B with the film 14. When it is necessary to change the width dimension of the film 14 wound around the roll body 10, the roll body 10 is attached to the roll body holder 1 of the film supply unit 120 in the reverse order, and the roll body What is necessary is just to remove the roll body 10 and the spacer 24 from the roll body holder 1 of the supply part 120. FIG. After removing the roll body 10 and the spacer 24 from the roll body holder 1, the spacer 24 corresponding to the width dimension of the film 14 wound around the roll body 10 is roded on the roll body holder 1 by the above-described procedure. The roll body 10 may be attached after being attached to 20.

As mentioned above, although the roll body holder which concerns on this invention, and the film packaging machine provided with the same have been demonstrated based on embodiment, this invention is not limited to the above embodiment.
For example, although the rod 20 of the present embodiment has been described with respect to an embodiment in which a protruding piece 22 that is a spacer position defining portion formed in a ring shape is formed in a detachable form composed of divided ring bodies 22a and 22b. The protruding piece 22 may be formed in a non-divided ring body. Further, the connecting screw 24 c may be formed integrally with the protruding piece 22. Furthermore, it is also possible to employ a rod with a protruding piece in which the protruding piece 22 is formed in part.

  Moreover, in this embodiment, although the slope part 35 of the 1st end cap 30 demonstrated the form with which the frustum-shaped side surface was entirely covered, as shown in FIG. 10, the rod 20 is penetrated. The slope portion 35 may be formed by appropriately (single or plural) ribs R connecting the small diameter portion 32 to the large diameter portion 34 to the outer peripheral surface of the sleeve 39 in the radial direction of the rod 20. In short, there is a portion corresponding to a slope portion that can be slid with a small force while the roll body 10 is placed between the rod 20 (the small diameter portion 32 of the first end cap 30) and the large diameter portion 34. It only has to be. At this time, when the roll body 10 is mounted on the rod 20, it is necessary to attach the first end cap 30 to the rod 20 so that the arrangement position of the rib R is the apex position of the rod 20.

  Furthermore, in the present embodiment, the shape of the first end cap 30 and the second end cap 40 and the surface treatment for reducing friction are the same, but the present invention is not limited to this. The surface treatment for disposing the flange portion on the second end cap 40 and reducing the friction is optional. Furthermore, the second end cap 40 is a member that is attached to the front side portion (insertion rear end portion) of the roll body 10 when the roll body holder 1 is attached. For this reason, since the front side portion of the roll body 10 can be sufficiently lifted compared to lifting the insertion-side distal end portion of the roll body 10, the rod 20 is similar to the second end cap in the prior art. It is also possible to use a short shape (second end cap 40 shown in FIG. 11) with a tapered portion to which the front side portion of the roll body 10 is lifted and mounted.

DESCRIPTION OF SYMBOLS 1 Film holder 10 Roll body 12 Cylindrical body 14 Film 20 Rod 22 Projection piece 22a One division | segmentation ring body 22b The other division | segmentation ring body 22c Connection convex part 24 Spacer 24a Connection concave part 24b Through-hole 24c Connection convex part 30 1st One end cap 32 Small diameter portion 34 Large diameter portion 35 Slope portion 36 Insertion hole 37 Recess 38 for connection 38 Flange portion 39 Sleeve 40 Second end cap 50 Fixing tool 100 Film packaging machine 105 Main body frame 110 Article supply portion 120 Film supply portion 130 Packaging unit 140 Discharging unit

Claims (7)

A roll body holder to which a roll body around which a long film is wound is mounted,
A rod that passes through the core of the roll body, and a first and a second that are detachably fixed on the rod at intervals and that fit into both ends of the core to hold the roll body An end cap and a spacer attached to the rod and defining a mounting position of the first end cap to the rod;
The rod is provided with a spacer position defining portion that defines an attachment end position of the spacer to the rod,
The first end cap is
A flange portion with which the end portion of the core portion abuts, and
In a state where the core portion is in contact with the flange portion, a fitting portion that fits into the core portion;
A slope portion that gradually expands toward the insertion portion and reaches the insertion portion;
A connecting recess is formed on the connecting surface with the spacer,
The slope portion is
When the roll body is mounted, the roll body is placed on the slope portion by the inner peripheral surface on one end side of the core portion and pushed toward the flange portion, so that one end side of the core portion is the slope portion. A guide portion for inserting the insertion portion into one end side of the core portion at a position in contact with the flange portion.
The spacer is
The connection of the spacer, which is composed of spacers formed in a plurality of width dimensions according to the width dimension of the film wound around the roll body to be mounted, and is directly connected to the first end cap The roll holder according to claim 1, wherein a connecting projection that can be fitted into the connecting recess is formed on the surface.   The roll body holder according to claim 1, wherein the spacer position defining portion is fixed to the rod. A plurality of the spacers are attached to the rod,
The plurality of spacers are connected to each other by a connection recess formed in one adjacent spacer and a connection projection formed in the other adjacent spacer and fitted in the connection recess. The roll body holder according to claim 1 or 2.   The roll according to any one of claims 1 to 3, wherein the first end cap is formed so that an inclination angle of the slope portion with respect to an axis of the rod is 12 ° or less. Body holder.   The roll body holder according to any one of claims 1 to 4, wherein at least a slope portion of the first end cap is covered with a surface of a low friction material.   The roll body holder according to any one of claims 1 to 5, wherein the second end cap is formed in the same shape as the first end cap. An article supply unit for supplying articles;
A film supply unit to which a film for packaging an article formed on a roll body can be attached;
A packaging unit for packaging an article with the film unwound from the film supply unit;
A carry-out portion for carrying out a package in which the article is film-wrapped by the packaging portion;
The film supply machine according to any one of claims 1 to 6, wherein the roll body holder is disposed in the film supply unit.

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