JP2024068787A - Film cutting device - Google Patents

Abstract

[Problem] To provide a film cutting device that can prevent the waste of film due to insufficient length, tears, wrinkles, etc., and when pulling out film from multiple original rolls of different widths, etc., can pull out each of the multiple original rolls with a single operation, thereby shortening the time required to pull out multiple pieces of film.
In the film cutting device, as a handle portion 18 is operated to rotate a pull-out portion 14, the pull-out portion 14 pulls out a film 36 from an original roll 34. A cutting portion 16 moves in the axial direction of the pull-out portion 14 to cut the film 36 at a position a predetermined length from an end 56 of the film 36.
[Selected figure] Figure 3

Description

The present invention relates to a film cutting device.

Patent document 1 discloses a film cutting device. In the film cutting device, a cutting section is moved in the width direction of a sheet-like film pulled out from a roll of raw material to cut the film.

Utility Model Registration No. 3233306

However, since the user must pull the film out from the original roll, it takes time to pull the film out from the original roll. In addition, since the user cuts the film by moving the cutting part in the width direction of the film, it is difficult to cut out the specified length of film. In particular, when film is pulled out simultaneously from multiple original rolls of different widths, it takes time to pull out the film and cutting the film becomes even more difficult. Film that fails to be cut is discarded. Examples of cutting failures include film that is not the specified length, wrinkles, and tears.

The present invention aims to solve the above-mentioned problems.

The aspect of the present invention is a film cutting device, which includes a pull-out section that can rotate around a central axis and pulls out a sheet-like film from a raw roll as the film cuts, a cutting section that cuts the film pulled out from the raw roll by moving in an axial direction along the central axis, and a handle section for rotating the pull-out section around the central axis by a user's operation. The pull-out section has a plurality of film support sections that are arranged at equal angular intervals on a circumference centered on the central axis and extend along the central axis. As the pull-out section rotates as the handle section is operated, the pull-out section pulls out the film from the raw roll, and the cutting section moves in the axial direction to cut the film at a position a predetermined length from the end of the film.

According to the present invention, the user can pull out film from the original roll and cut the film pulled out from the original roll to a specified length simply by operating the handle. This makes it easy to obtain film cut to a specified length, and reduces the waste of film due to insufficient length, tears, wrinkles, etc. Furthermore, when pulling out film from multiple original rolls of different widths, etc., the film can be pulled out from each of the multiple original rolls with a single operation, thereby reducing the time required to pull out multiple films.

FIG. 1 is a front view of a film cutting device. FIG. 2 is a right side view of the film cutting device. FIG. 3 is a right side view of the drawer portion. FIG. 4 is a right side view showing a partial configuration of the cutting unit moving mechanism. FIG. 5 is a rear view showing a partial configuration of the cutting unit moving mechanism. FIG. 6 is a right side view showing a part of the operation of the film cutting device. FIG. 7 is a front view showing a part of the operation of the film cutting device. 8A and 8B are right side views showing a partial operation of the film cutting device.

Figure 1 is a front view of the film cutting device 10 according to this embodiment. Figure 2 is a right side view of the film cutting device 10. In the following explanation, the direction in Figure 1 when looking at the film cutting device 10 is defined as rear, and the front-rear, left-right, and up-down directions will be explained.

The film cutting device 10 comprises a base 12, a drawer section 14, a cutting section 16, a handle section 18, and a cutting section movement mechanism 20.

The base 12 is rectangular in shape. First support columns 22 are erected at the four corners of the base 12. A first connecting rod 24 is connected to the upper ends of the two first support columns 22 on the right side. A second connecting rod 26 is connected to the upper ends of the two first support columns 22 on the left side. The first connecting rod 24 and the second connecting rod 26 extend in the front-to-rear direction.

A second support pillar 28 is connected to each of the two rear first support pillars 22. Each of the two second support pillars 28 extends upward from the upper end of the rear first support pillar 22. A first support rod 30 and a second support rod 32 are connected to the two second support pillars 28. The first support rod 30 and the second support rod 32 extend parallel to each other in the left-right direction, spaced apart in the up-down direction.

The first support rod 30 is connected to the lower ends of the two second support pillars 28. The second support rod 32 is connected to the upper ends of the two second support pillars 28.

Two original rolls 34 are inserted into each of the first support rod 30 and the second support rod 32. Sheet-like films 36 with different film widths are wound around the two original rolls 34. The films 36 are, for example, resin films with a certain degree of adhesion. The pull-out section 14 pulls out the film 36 forward from the two original rolls 34 supported by the first support rod 30. The two original rolls 34 supported by the second support rod 32 are replacement original rolls for the two original rolls 34 supported by the first support rod 30.

In the following explanation, we will explain one of the two raw cloth rolls 34 supported by the first support rod 30.

A third support rod 38 is connected to each of the first connecting rod 24 and the second connecting rod 26. The two third support rods 38 extend upward from the first connecting rod 24 and the second connecting rod 26. The upper ends of the two third support rods 38 pivotally support the drawer section 14.

The pull-out section 14 has a central shaft portion 40. The central shaft portion 40 is a rod-shaped member. The central shaft portion 40 is disposed on a central axis 42 whose axial direction is the left-right direction. Both ends of the central shaft portion 40 are supported by the upper ends of two third support rods 38. As shown in FIG. 3, the pull-out section 14 can rotate in the direction of arrow A around the central axis 42.

The pull-out section 14 further has a plurality of film support sections 44. The plurality of film support sections 44 are arranged at equal angular intervals (angle θ) on a circumference 46 centered on the central axis 42. The plurality of film support sections 44 extend along the central axis 42. The plurality of film support sections 44 are connected to a plurality of connecting members 48 that extend radially outward from the central axis section 40.

In this embodiment, four film support sections 44 are arranged at 90° intervals (θ = 90°). Four connecting members 48 are provided at 90° intervals on the right end of the central shaft section 40. Four connecting members 48 are provided at 90° intervals on the left end of the central shaft section 40. Thus, both ends of the multiple film support sections 44 are connected to both ends of the central shaft section 40 via two connecting members 48.

Each of the film support parts 44 has a first rod-shaped member 50 and a second rod-shaped member 52. As shown in FIG. 1, the first rod-shaped member 50 and the second rod-shaped member 52 extend in parallel with each other in the axial direction. As shown in FIG. 3, the second rod-shaped member 52 is spaced apart from the first rod-shaped member 50 in the direction of arrow B, which is the opposite direction to the direction of arrow A. That is, the first rod-shaped member 50 is located in the direction of arrow A more than the second rod-shaped member 52. In the circumferential direction of the pull-out section 14, the distance between the first rod-shaped member 50 and the second rod-shaped member 52 constituting one film support part 44 is smaller than the distance between the adjacent film support parts 44. Both ends of the first rod-shaped member 50 are connected to two connecting members 48 via two L-shaped connecting parts 54. Both ends of the second rod-shaped member 52 are connected to the tips of the two connecting members 48.

When the pull-out section 14 rotates in the direction A around the central axis 42, it pulls out the sheet-like film 36 from the original roll 34. Specifically, when the pull-out section 14 rotates in the direction of the arrow A, one of the multiple film support sections 44 functions as an end support section 58 that supports the end 56 of the film 36. Therefore, when the pull-out section 14 is rotated in the direction of the arrow A with the end 56 of the film 36 supported by the end support section 58, the film 36 can be pulled out from the original roll 34. Note that when the film 36 is a resin film with a certain degree of adhesion, the end 56 of the film 36 is fixed to the end support section 58 by the static electricity of the film 36 and the adhesion of the film 36.

Of the multiple film support parts 44, the other film support part 44 adjacent to the end support part 58 in the direction of arrow B functions as an intermediate support part 60 that supports the part of the film 36 between the original roll 34 and the end 56. Therefore, tension can be applied to the film 36 by hanging the film 36 across the intermediate support part 60. In addition, since the intermediate support part 60 has a first rod-shaped member 50 and a second rod-shaped member 52, tension can be easily applied to the film 36 by the first rod-shaped member 50 and the second rod-shaped member 52 when the film 36 is hung across the intermediate support part 60.

As shown in FIG. 1, the handle portion 18 is connected to the right end of the central shaft portion 40. The handle portion 18 rotates the pull-out portion 14 about the central axis 42 when operated by the user. As shown in FIG. 2, the handle portion 18 has a central portion 62 and multiple operating portions 64.

As shown in FIG. 1, the central portion 62 is coaxially connected to the central shaft portion 40. In other words, the central portion 62 is arranged coaxially with the central axis 42. The central portion 62 can rotate integrally with the pull-out portion 14 around the central axis 42.

As shown in FIG. 2, the multiple operating parts 64 protrude radially outward from the central part 62 around the central axis 42. The multiple operating parts 64 are levers that can be operated by a user. More specifically, the multiple operating parts 64 are provided at equal angular intervals with respect to the central part 62, with the central axis 42 as the center. Therefore, the multiple film support parts 44 and the multiple operating parts 64 are provided at the same angular intervals (θ=90°) (see FIG. 3). Each of the multiple operating parts 64 has a protruding part 66 that protrudes radially outward from the central part 62, and a handle part 68 connected to the tip of the protruding part 66.

When a user grips the handle portion 68 and rotates the handle portion 18 in the direction of arrow A around the central axis 42, the pull-out portion 14 rotates in the direction of arrow A. This allows the pull-out portion 14 to pull out the film 36 from the original roll 34.

As shown in FIG. 1, the cutting unit 16 is a blade such as a cutter knife. The cutting unit 16 cuts the film 36 pulled out from the original roll 34 by moving left and right (axial direction) along the central axis 42. Specifically, when the pull-out unit 14 pulls out the film 36 from the original roll 34, the cutting unit 16 moves left and right to cut the film 36 at a position a predetermined length from the end 56 of the film 36 (see FIG. 3) in the direction of arrow B. Therefore, the movement path of the cutting unit 16 is a path along the left and right direction.

In more detail, when the intermediate support part 60 reaches the movement path of the cutting part 16 as the drawing part 14 rotates, the cutting part 16 moves left and right to cut the film 36 (see FIG. 8B). Because the intermediate support part 60 has a first rod-shaped member 50 and a second rod-shaped member 52, the cutting part 16 moves left and right between the first rod-shaped member 50 and the second rod-shaped member 52 to cut the film 36 when the intermediate support part 60 reaches the movement path of the cutting part 16.

As shown in FIG. 1, the cutting unit movement mechanism 20 moves the cutting unit 16 in the left-right direction. The cutting unit movement mechanism 20 moves the cutting unit 16 to the right (first direction) while the pull-out unit 14 is rotating in response to the user's operation of the handle unit 18. In this case, the cutting unit movement mechanism 20 moves the cutting unit 16 in the first direction radially outward of the portion of the film 36 that is stretched between the end support unit 58 and the middle support unit 60 (see FIGS. 7 and 8A). Therefore, while moving to the right, the cutting unit 16 can move to the cutting standby position 70 without cutting the film 36. The cutting standby position 70 is the right end position of the movement path of the cutting unit 16.

When the intermediate support unit 60 reaches the movement path of the cutting unit 16, the cutting unit movement mechanism 20 moves the cutting unit 16 from the cutting standby position 70 to the left (second direction) (see FIG. 1). This allows the cutting unit 16 to cut the film 36 by moving to the left (see FIG. 8B).

Specifically, the cutting section movement mechanism 20 has a first rail 72 (see FIG. 2), a first slider 74, a second rail 76 (see FIG. 1), a second slider 78, a first connecting section 80, a third rail 82, a weight 84, and a second connecting section 86.

As shown in FIG. 2, a first support member 88 is connected to the base 12 and the first connecting rod 24. The first support member 88 extends upward from the base 12 and the first connecting rod 24. The upper end of the first support member 88 is located higher than the upper end of the second support pillar 28. One end of the first rail 72 is connected to the upper end of the first support member 88. The other end of the first rail 72 is connected to the upper end of the second support pillar 28 on the right side. Therefore, the first rail 72 extends diagonally upward as it moves forward.

The first slider 74 can slide along the first rail 72. A movement restricting member 90 is attached to the other end of the first rail 72. The movement restricting member 90 is a cushion member. The movement restricting member 90 restricts the rearward movement of the first slider 74 and also reduces the impact when the first slider 74 moves to the other end of the first rail 72.

As shown in Figures 1 and 2, a second support member 92 is connected to each of the first connecting rod 24 and the second connecting rod 26. The two second support members 92 extend upward from the first connecting rod 24 and the second connecting rod 26. The upper ends of the left and right second support members 92 are located above the drawer section 14. The right end of the second rail 76 is connected to the upper end of the right second support member 92. The left end of the second rail 76 is connected to the upper end of the left second support member 92. The second rail 76 extends in the left-right direction above the drawer section 14.

The second slider 78 is slidable along the second rail 76 above the drawer 14. The cutting section 16 is provided on the second slider 78. The cutting section 16 is attached to the lower part of the second slider 78, in front of the second rail 76. When the second slider 78 moves rightward along the second rail 76, the right end of the second rail 76 becomes the cutting standby position 70 (see FIG. 7). When the second slider 78 moves leftward from the cutting standby position 70 along the second rail 76, the left end of the second rail 76 becomes the position of the second slider 78 and the cutting section 16 after cutting is completed (see FIG. 1).

As shown in Figures 4 and 5, the first connecting part 80 connects the first slider 74 to the cutting part 16 or the second slider 78. The first connecting part 80 is a string-like or wire-like member. Specifically, one end of the first connecting part 80 is connected to the first slider 74 (see Figure 4). The other end of the first connecting part 80 is connected to the second slider 78 (see Figure 5). Note that since the second slider 78 is provided with the cutting part 16, the other end of the first connecting part 80 may be connected to the cutting part 16.

2, the second support member 92 and the first support member 88 on the right side are connected via a third connecting rod 94. The third connecting rod 94 extends in the front-rear direction. The front end of the third connecting rod 94 is connected to the first support member 88. The third connecting rod 94 extends rearward through the second support member 92. The rear end of the third connecting rod 94 is connected to the third support member 96. The third support member 96 extends in the up-down direction. As shown in FIGS. 2 and 6, the first pulleys 98 are rotatably attached to the upper end of the second support column 28 on the right side, at the connection point between the third connecting rod 94 and the third support member 96, and above the connection point on the third support member 96. The first connecting portion 80 is hung across the three first pulleys 98.

As shown in Figs. 1 and 5, a fourth support member 100 is connected to the second support member 92 on the left side via a connecting member (not shown) extending in the front-rear direction. The fourth support member 100 extends in the vertical direction behind the second support member 92 and the second rail 76. A second pulley 102 is rotatably attached to the upper end of the fourth support member 100. A third rail 82 is disposed to the left of the fourth support member 100. The third rail 82 extends in the vertical direction. The lower end of the third rail 82 is fixed to the base 12. The upper part of the third rail 82 is fixed to the fourth support member 100.

The weight 84 is slidable along the third rail 82.

The second connecting part 86 connects the cutting part 16 or the second slider 78 to the weight 84. The second connecting part 86 is a string-like or wire-like member. Specifically, one end of the second connecting part 86 is connected to the second slider 78. The other end of the second connecting part 86 is connected to the weight 84. Since the second slider 78 is provided with the cutting part 16, one end of the second connecting part 86 may be connected to the cutting part 16. The second connecting part 86 is hung across the second pulley 102.

When the first connecting part 80 and the second connecting part 86 are string-like members, the string-like members include strings, wires, etc.

Next, the operation of the film cutting device 10 according to this embodiment will be described.

First, the user causes the second rod-shaped member 52 of one of the film support parts 44 to support the end 56 (see FIG. 3) of the film 36. At this time, the film support part 44 supporting the end 56 of the film 36 functions as the end support part 58.

Next, the user grasps the grip portion 68 of the handle portion 18 and rotates the handle portion 18 in the direction of arrow A (see FIG. 2). When the user operates the handle portion 18, the pull-out portion 14 rotates in the direction of arrow A in conjunction with the rotation of the handle portion 18 (see FIG. 3). As a result, the film 36 is pulled out from the original roll 34.

At this time, the other film support part 44 adjacent to the end support part 58 in the direction of arrow B functions as an intermediate support part 60 that supports the portion of the film 36 between the end 56 and the original roll 34. As a result, that portion of the film 36 is supported by the first rod-shaped member 50 and the second rod-shaped member 52 of the intermediate support part 60 and tension is applied to that portion.

When the handle portion 18 rotates in the direction of the arrow A, one of the operating portions 64 comes into contact with the first slider 74 and presses the first slider 74 (see FIG. 6). This operating portion 64 is adjacent to the operating portion 64 operated by the user in the direction of the arrow B.

The first slider 74 slides diagonally upward along the first rail 72 due to the pressing force from the other operating parts 64 as the handle part 18 rotates. As a result, the first connecting part 80 is pulled by the first slider 74, and a first tensile force acts on the cutting part 16 and the second slider 78 via the first connecting part 80 toward the first slider 74 (see Figures 4 and 5). The first tensile force is a force that pulls the cutting part 16 and the second slider 78 to the right. The user operates the handle part 18 while feeling the load acting on the other operating parts 64 from the first slider 74.

The cutting portion 16 and the second slider 78 are connected to the weight 84 via the second connecting portion 86. The weight 84 is located lower than the cutting portion 16 and the second slider 78 (see FIG. 1). Therefore, a second tensile force acting toward the weight 84 acts on the cutting portion 16 and the second slider 78. The second tensile force is a force that pulls the cutting portion 16 and the second slider 78 to the left.

When the first tensile force becomes greater than the second tensile force due to the user's operation of the handle portion 18, the cutting portion 16 and the second slider 78 move rightward along the second rail 76 against the load of the weight 84, as shown in FIG. 7. At this time, the cutting portion 16 and the second slider 78 move rightward radially outward from the portion of the film 36 that spans between the end support portion 58 and the middle support portion 60 (see FIGS. 7 and 8A). Therefore, by moving rightward, the cutting portion 16 and the second slider 78 can move to the cutting standby position 70 without cutting the film 36.

When the cutting unit 16 and the second slider 78 move to the cutting standby position 70 and the intermediate support unit 60 reaches the path of movement of the cutting unit 16, and then the user further rotates the operating unit 64 in the direction of arrow A, the other operating unit 64 is displaced downward relative to the first slider 74. This releases the first slider 74 from the state of being pressed by the other operating unit 64. As a result, the first slider 74 returns to the position shown in FIG. 2 along the first rail 72.

As the first slider 74 returns, the first tensile force acting on the cutting portion 16 and the second slider 78 (see FIG. 7) disappears. As a result, only the second tensile force acting from the weight 84 via the second connecting portion 86 acts on the cutting portion 16 and the second slider 78. With the disappearance of the first tensile force, the weight 84 moves downward due to gravity. As a result, the cutting portion 16 and the second slider 78 move leftward along the second rail 76 due to the second tensile force (see FIG. 1).

As described above, since the intermediate support section 60 has reached the moving path of the cutting section 16 (see FIG. 8B), the cutting section 16 moves leftward between the first rod-shaped member 50 and the second rod-shaped member 52 in the intermediate support section 60 due to gravity acting on the weight 84. As a result, the film 36 is cut in one go at a position of a predetermined length from the end 56 in the direction of arrow B. As a result, a predetermined length of film 36 can be easily obtained. That is, the user can easily obtain a predetermined length of film 36 with a simple operation by operating the handle section 18 to align the position of the intermediate support section 60 on the moving path of the cutting section 16, which is the cutting position. In addition, as the film 36 is cut by the cutting section 16, a new end 56 is formed in the film 36. Therefore, the film support section 44 that functioned as the intermediate support section 60 becomes the next end support section 58. In this way, each time the film 36 is cut, the film support section 44 that functions as the end support section 58 is sequentially replaced among the multiple film support sections 44.

The cut film 36 is used, for example, as a wrap tape to cover vehicle doors, steps, etc. In addition, even after the film 36 is cut, the film 36 remains supported by the second rod-shaped member 52 of the intermediate support portion 60. This makes it possible to perform the next cutting operation of the film 36, using the supported portion of the film 36 as the end 56 of the film 36.

The invention that can be understood from the above embodiment is described below.

The aspect of the present invention is a film cutting device (10), which is rotatable around a central axis (42) and includes a pull-out section (14) that pulls out a sheet-like film (36) from a raw roll (34) as the film cuts, a cutting section (16) that cuts the film pulled out from the raw roll by moving in the axial direction along the central axis, and a handle section (18) for rotating the pull-out section around the central axis by a user's operation. The pull-out section has a plurality of film support sections (44) that are arranged at equal angular intervals on a circumference (46) centered on the central axis and extend along the central axis. As the pull-out section rotates by operating the handle section, the pull-out section pulls out the film from the raw roll, and the cutting section moves in the axial direction to cut the film at a position a predetermined length from the end (56) of the film.

According to the present invention, the user can pull out film from the original roll and cut the film pulled out from the original roll to a specified length simply by operating the handle. This makes it easy to obtain film cut to a specified length, and reduces the waste of film due to insufficient length, tears, wrinkles, etc. Furthermore, when pulling out film from multiple original rolls of different widths, etc., the film can be pulled out from each of the multiple original rolls with a single operation, thereby reducing the time required to pull out multiple films.

In one aspect of the present invention, when the pull-out section rotates, one of the multiple film support sections functions as an end support section (58) that supports the end of the film, and another of the multiple film support sections that is adjacent to the end support section in the opposite direction to the rotation direction of the pull-out section functions as an intermediate support section (60) that supports a portion of the film between the original roll and the end, and the cutting section moves in the axial direction when the intermediate support section reaches the movement path of the cutting section as the pull-out section rotates, thereby cutting the film.

Because the film is supported by the end support section and the middle support section, the film can be easily pulled out from the original roll by simply rotating the pull-out section. In addition, tension can be applied to the film by hanging it over the middle support section. This allows the film pulled out from the original roll to be cut to the specified length easily and reliably.

In one aspect of the present invention, each of the multiple film support sections has a first rod-shaped member (50) and a second rod-shaped member (52) that extend parallel to each other in the axial direction, the second rod-shaped member is spaced apart from the first rod-shaped member in a direction opposite to the direction of rotation, and the cutting section moves in the axial direction between the first rod-shaped member and the second rod-shaped member at the intermediate support section to cut the film.

The film is cut at a position between the first and second rod-shaped members in the intermediate support section, so that after the film is cut, the end of the next film can be supported by the second rod-shaped member. This allows the next film to be pulled out reliably.

In one aspect of the present invention, the handle portion has a central portion (62) that is arranged coaxially with the central axis and can rotate integrally with the pull-out portion around the central axis, and an operating portion (64) that protrudes radially outward from the central portion around the central axis and can be operated by the user.

Because the handle part can rotate coaxially and integrally with the pull-out part, the direction and amount of operation of the control part by the user correspond to the direction and amount of rotation of the pull-out part. This allows for intuitive operation, making it even easier to pull out the film from the original roll.

In an aspect of the present invention, the film cutting device further includes a cutting unit movement mechanism (20) for moving the cutting unit in the axial direction, and the cutting unit movement mechanism moves the cutting unit in a first direction along the axial direction radially outward of the portion of the film that is stretched between the end support unit and the intermediate support unit during rotation of the pull-out unit in response to the user's operation of the handle unit, and the cutting unit moves to a cutting standby position (70) without cutting the film by moving in the first direction, and when the intermediate support unit reaches the movement path of the cutting unit, the cutting unit movement mechanism moves the cutting unit from the cutting standby position in a second direction opposite to the first direction, and the cutting unit cuts the film by moving in the second direction.

When the film is being pulled out from the original roll, the cutting section can be moved to the cutting standby position without cutting the film, so the film pulled out from the original roll can be reliably cut to the specified length.

In one aspect of the present invention, the cutting section moving mechanism includes a first rail (72) extending in a direction perpendicular to the axial direction, a first slider (74) that can slide along the first rail, a second rail (76) extending in the axial direction, a second slider (78) that can slide along the second rail and is provided with the cutting section, a string-like or wire-like first connecting section (80) that connects the first slider to the second slider or the cutting section, a string-like or wire-like second connecting section (86), and a weight (84) connected to the second slider or the cutting section via the second connecting section, and the original roll is moved by the user's operation of the handle section. When the film is pulled out from the roll, the first slider slides along the first rail due to the pressing force of the handle portion, and the cutting section and the second slider move along the second rail against the load of the weight due to a first tensile force from the first slider via the first connecting portion to the cutting standby position, and after the film has been pulled out from the original roll by the predetermined length or more, when the first slider is released from the pressing force, the cutting section and the second slider move in the second direction along the second rail due to a second tensile force from the weight via the second connecting portion, and the film is cut.

The user can pull out the film from the roll and cut it simply by operating the handle.

The present invention is not limited to the above disclosure, and various configurations may be adopted without departing from the gist of the present invention.

10: Film cutting device 14: Pulling section 16: Cutting section 18: Handle section 34: Original roll 36: Film 42: Central axis 44: Film support section 46: Circumference 56: End

Claims (6)

A pull-out section that is rotatable about a central axis and pulls out a sheet-like film from the original roll as the pull-out section rotates;
a cutting section that cuts the film pulled out from the original roll by moving in an axial direction along the central axis;
A handle portion for rotating the pull-out portion around the central axis by a user's operation;
Equipped with
the pull-out section has a plurality of film support sections that are arranged at equal angular intervals on a circumference centered on the central axis and extend along the central axis,
The handle portion is operated to rotate the pull-out portion, thereby causing the pull-out portion to pull out the film from the original roll, and the cutting portion moves in the axial direction to cut the film at a predetermined length from the end of the film. 2. The film cutting device according to claim 1,
When the pull-out section rotates, one of the plurality of film support sections functions as an end support section that supports an end of the film, and another of the plurality of film support sections that is adjacent to the end support section in the opposite direction to the rotation direction of the pull-out section functions as an intermediate support section that supports a portion of the film between the original roll and the end,
The cutting section moves in the axial direction when the intermediate support section reaches a path of movement of the cutting section as the pull-out section rotates, thereby cutting the film. 3. The film cutting device according to claim 2,
Each of the plurality of film supporting portions has a first rod-shaped member and a second rod-shaped member extending parallel to each other in the axial direction,
The second rod-shaped member is disposed at a distance from the first rod-shaped member in a direction opposite to the rotation direction,
The cutting section moves in the axial direction between the first rod-shaped member and the second rod-shaped member of the intermediate support section to cut the film. The film cutting device according to any one of claims 1 to 3,
The handle portion is
a central portion arranged coaxially with the central axis and rotatable integrally with the lead-out portion about the central axis;
an operation unit that protrudes from the central portion toward an outer side in a radial direction centered on the central axis and is operable by the user;
A film cutting device having a 4. The film cutting device according to claim 2,
A cutting unit moving mechanism for moving the cutting unit in the axial direction is further provided,
The cutting unit moving mechanism moves the cutting unit in a first direction along the axial direction radially outward from a portion of the film that is stretched between the end support portion and the intermediate support portion during rotation of the pull-out portion in accordance with the user's operation of the handle portion,
the cutting unit moves in the first direction to a cutting standby position without cutting the film,
the cutting unit movement mechanism moves the cutting unit from the cutting standby position in a second direction opposite to the first direction when the intermediate support portion reaches a movement path of the cutting unit;
The cutting section cuts the film by moving in the second direction. 6. The film cutting device according to claim 5,
The cutting unit moving mechanism includes:
A first rail extending in a direction perpendicular to the axial direction;
a first slider slidable along the first rail;
a second rail extending in the axial direction;
a second slider slidable along the second rail and provided with the cutout;
a string-like or wire-like first connecting portion that connects the first slider to the second slider or the cutting portion;
A string-like or wire-like second connecting portion;
A weight connected to the second slider or the cutting portion via the second connecting portion;
having
When the user operates the handle portion to pull out the film from the original roll, the first slider slides along the first rail due to the pressing force of the handle portion, and the cutting portion and the second slider move to the cutting standby position along the second rail against the load of the weight due to a first tensile force from the first slider via the first connecting portion,
a film cutting device in which, when the first slider is released from the pressing force after the film has been pulled out from the original roll by the specified length or more, the cutting portion and the second slider move in the second direction along the second rail due to a second tensile force from the weight via the second connection portion, and the film is cut.

Images