JP7385261B2 - Winding film support device - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies FOOMA JAPAN 2019 International Food Industry Exhibition held on July 9, 2020 JAPAN PACK 2019 Japan Packaging Industry Exhibition held on October 29, 2020

The present invention relates to a roll-up film support device for supporting a roll-up film in a packaging machine or the like.

In packaging machines such as vertical pillow packaging machines, horizontal pillow packaging machines, wrapping packaging machines, and overwrapping packaging machines, the film that serves as the packaging material is fed out from a roll of film wound around a paper tube. A package containing the packaged product is manufactured.
In such a packaging machine, the roll film is supported by a roll film support device. The center hole is inserted and the take-up film is installed.
In this case, the winding film is manually attached to the winding film support device by an operator. Specifically, the worker hooks the fingers of both hands on the center hole of the winding film, lifts the film with both hands, and moves the lifted film so that the center hole is inserted into the shaft. and attach the take-up film to the shaft.
In addition, when removing the wound film with remaining film (hereinafter referred to as "remaining film") from the shaft, push the remaining film toward the tip of the shaft so that the center hole of the remaining film is removed from the shaft. Before it comes off, place the fingers of both hands on the center hole of the remaining wound film, lift the remaining wound film with both hands, release the lifted film from the shaft, and move it to a storage location.
Some of the winding film and remaining winding film weigh more than 10 kg, and the work of inserting the center hole of the winding film into the shaft and the work of removing the remaining winding film from the shaft requires a considerable burden. In addition, there is a problem in that accidents such as a worker's hand getting caught between the inner wall of the center hole and the shaft occur.

In this regard, Patent Document 1 (Japanese Unexamined Patent Publication No. 2016-175725) discloses a film in which a film is wound around a core material, with the objective of providing a film roll support device with excellent workability in film roll mounting work. A film roll support device that supports a roll, the shaft main body portion to which the film roll is attached by passing through a center hole of the film roll, and the shaft main body portion on the side that is inserted into the center hole of the film roll. a shaft tip extending from one end along the axial direction of the shaft; and a shaft tip extending from the shaft tip in a direction intersecting the axial direction of the shaft main body when the film roll is mounted. a convex portion that abuts from below the core material of the film roll temporarily placed on the shaft body, and the convex portion has at least one notch recessed in a direction intersecting the axial direction of the shaft body portion A film roll support device having two configurations has been proposed.
However, in the film roll support device of Patent Document 1, since the tip of the shaft is provided with a convex portion for temporarily placing the film roll, it is difficult to insert the center hole of the film roll from the tip of the shaft or to remove the remaining film roll. When separating the center hole from the shaft, there is a risk of accidents such as the hand of the worker holding the center hole hitting the protrusion or getting his or her hand caught between the protrusion and the inner wall of the center hole. Problems still remain in terms of workability and accident prevention.

Japanese Patent Application Publication No. 2016-175725

The problem to be solved by the present invention is that when attaching a take-up film to the shaft of a take-up film support device of a packaging machine or removing the remaining take-up film from the shaft, an operator who has a center hole in the take-up film Load the film onto the shaft or remove the remaining film from the shaft without your hand touching the tip of the shaft or getting caught between the tip of the shaft and the inner wall of the center hole of the film. It should be possible to remove it.

The invention according to claim 1 provides a winding film support device comprising a shaft into which a central hole of the winding film is inserted and mounted, and a shaft rotation means for rotating the shaft, the shaft being connected to the winding film. The holder is provided with a holder into which the center hole of the film is inserted to hold the wound film, and a protrusion fixed to the distal end of the holder, the protrusion having a constant thickness and having a pair of flat surfaces. The shaft rotating means includes a plate-like part and a slope part having a pair of flat inclined surfaces continuous with the flat surface , and the shaft rotating means is a winding member equipped with a rotation control means for rotating the plate-like part to a horizontal position. The object of the present invention is to provide a pick-up film support device to solve the above problems.

A second aspect of the present invention provides a winding film support device in which the width of the distal end of the plate-like portion decreases as it goes forward, thereby solving the above problem.

In the invention according to claim 3, the protruding portion has a cylindrical portion continuous to the inclined portion, the outer diameter of the cylindrical portion is the same as the outer diameter of the holder, and a boundary portion between the cylindrical portion and the holder has a The above-mentioned problem is solved by providing a roll-up film support device that does not create a step.

In the winding film support device of the invention according to claim 1, when the winding film is mounted on the shaft or the remaining winding film is removed from the shaft, the operator's hand holding the center hole of the winding film is You can easily attach the film to the shaft and remove the remaining film from the shaft without hitting the tip of the shaft or getting caught between the tip of the shaft and the inner wall of the center hole of the film. It has the effect of being able to

The roll-up film support device according to the second aspect of the present invention further has the effect that the center hole of the roll-up film can be easily inserted into the projection without bumping the end face of the roll-up film against the projection.

The wound film supporting device according to the third aspect of the present invention further has the effect that the wound film can be easily slid from the inclined portion to the holder.

FIG. 1 is a perspective view of a take-up film support device of the present invention. FIG. 2 is a plan view of the take-up film support device shown in FIG. 1; FIG. 2 is a front view of the take-up film support device shown in FIG. 1; FIG. 2 is an enlarged plan view of a protrusion of the roll-up film support device shown in FIG. 1; FIG. 2 is an enlarged left side view of a protrusion of the roll-up film support device shown in FIG. 1; FIG. 2 is a block diagram showing the configuration of a motor unit. FIG. 1 is a perspective view showing the overall configuration of a vertical pillow packaging machine. FIG. 3 is an explanatory diagram illustrating a state before the winding film MF is mounted on the shaft 10. FIG. FIG. 3 is an explanatory diagram illustrating a state in which a winding film MF is mounted on a shaft 10. FIG. FIG. 3 is an explanatory diagram illustrating a state after the winding film MF is mounted on the shaft 10. FIG. FIG. 6 is an explanatory diagram illustrating an operation of removing the remaining winding film from the shaft. It is a front view of the state where the remaining winding film is separated from the shaft.

[Configuration of winding film support device]
FIG. 1 is a perspective view of the film support device of the present invention, FIG. 2 is a plan view of the film support device shown in FIG. 1, and FIG. 3 is a front view of the film support device shown in FIG. 4 is an enlarged plan view of the protrusion of the film support device shown in FIG. 1, and FIG. 5 is an enlarged left side view of the protrusion of the film support device shown in FIG.
In the figure, 1 is a winding film support device, 10 is a shaft, 11 is a holder, 12 is a protruding part, 12a is a plate-like part, 12am is a flat surface, 12as is a tip part, 12b is an inclined part, 12bm is an inclined surface, 12c is a cylindrical part, 13 is a rotating shaft, 14 is a stopper, 20 is a shaft support part, 21 is a frame, CA is a center axis, Ch is a center hole of the winding film, X is a left-right direction, Y is a front-back direction, Z indicates the vertical direction.
The winding film support device 1 includes a shaft 10 and a shaft support section 20, and the shaft 10 includes a holder 11, a protrusion 12, and a rotating shaft 13, and has a central axis CA.
The holder 11 has a plurality of claws or protruding bands (not shown) on the circumferential surface, and the claws or protruding bands are made to protrude from the circumferential surface by using compressed air or the like, and are inserted into the shaft through the center hole (paper The mounted winding film is fixed to the shaft 10 (holder 11) by pressing the hole (formed by the tube) from the inside.
The protruding portion 12 includes a plate-like portion 12a, an inclined portion 12b, and a cylindrical portion 12c, and has a substantially wedge shape.
The plate portion 12a is a flat body having a pair of flat surfaces 12am, 12am and a tip portion 12as, and the inclined portion 12b has a pair of flat sloped surfaces 12bm, 12b continuous with the pair of flat surfaces 12am, 12am. The cylindrical portion 12c is continuous with the inclined portion 12b, and its end surface abuts the end surface of the holder 11 and is fixed to the holder 11 with a screw (not shown) or the like (see FIG. 3).
In this case, as will be described later, the outer diameters of the cylindrical portion 12c and the holder 11 are the same, and when the cylindrical portion 12c is fixed to the holder 11, there will be no step at the boundary between the two.
In addition, the outer shape of the protruding portion 12 is symmetrical in the Y direction and the Z direction in the states shown in FIGS. 1 to 4, and the central axis of the protruding portion 12 in the The central axis CA passes through the plate-like portion 12a.
The rotating shaft 13 serves as the rotating shaft of the shaft 10, and is rotatably supported by the frame 21 of the shaft support section 20.
The stopper 14 is a disc that positions the wound film in the X direction, and is attached to the circumferential surface of the holder 11 so as to be movable in the X direction, and is moved in the X direction by a moving mechanism (not shown) to adjust the position. The end surface of the winding film inserted into the shaft 10 (holder 11) abuts against the side surface of the stopper 14, and the winding film is positioned in the X direction.

Here, the dimensional relationship between each part constituting the protrusion 12 and the holder 11 will be explained.
The outer diameter of the cylindrical part 12c is d, the height (thickness, length in the Z direction) of the plate-like part 12a (the part shown in gray in FIG. 4) is h, and the width (in the Y direction and length) of the tip part 12as is If w, the outer diameter of the holder 11 is the same as the outer diameter d, the width (Y direction and length) of the portion of the plate-shaped portion 12a excluding the tip 12as is the same as the outer diameter d, and the height h is 1/10 to 1/3 of the outer diameter d (see FIGS. 2 and 5).
Further, the tip 12as has a substantially isosceles trapezoidal shape in plan view, and the corner on the tip end side is rounded, and its width w decreases as it goes toward the tip (in the X direction), and becomes the width w0 at the tip end, and w0 is approximately 1/2 of the diameter D of the center hole Ch of the wound film (see FIGS. 4 and 5).
Thereby, when the winding film is mounted on the shaft 10, the center hole Ch of the winding film can be inserted into the protruding portion 12 without the end face of the winding film coming into contact with the tip portion 12as.
When the center hole Ch of the winding film is inserted into the plate-like part 12a of the protruding part 12, there is a wide space ( 5) is formed, and as described later, the operator's hand holding the center hole of the winding film may come into contact with the protrusion 12, or the protrusion 12 and the inner wall of the center hole of the winding film. The winding film can be mounted on the shaft 10 without being caught between the two, and the remaining winding film can be removed from the shaft 10.

The shaft support section 20 includes a frame 21, a connecting section (not shown) installed in the frame 21, a motor unit, etc., the connecting section includes a clutch, a speed reducer, etc., and the output side is connected to the rotation axis of the shaft 10. It is connected to 13.
FIG. 5 is a block diagram showing the configuration of the motor unit. In the figure, 22 is a motor unit, 23 is a motor, 24 is a rotation control section, 24a is an operation control section, and 24b is a position detection section.
The motor unit 22 includes a motor 23 and a rotation control section 24, and the rotation control section 24 includes an operation control section 24a and a position detection section 24b.
The motor 23 is connected to the input side of the connection part and is operated by pressing an operation button (not shown) installed on the frame 21 to rotate the rotating shaft 13 of the shaft 10.
The operation control section 24a controls the rotation of the motor 23, and the position detection section 24b detects the position (angle) of the motor 23.
In the rotation control unit 24, the position (angle) of the motor 23 detected by the position detection unit 24b is set to a position where the plate-shaped portion 12a of the protrusion 12 is in a horizontal state (the plate-shaped portion shown in FIGS. 2 to 5). The operation control section 24a controls the rotation of the motor 23 so that the position of the section 12a is the same.
Note that if a servo motor is attached to the rotating shaft 13 of the shaft 10 for controlling the tension of the film that is unwound from the take-up film, the protruding portion 12 is operated by the servo motor for tension control instead of the motor unit 22. The rotating shaft 13 of the shaft 10 may be rotated to a position where the plate-like portion 12a is in a horizontal state.

[Vertical pillow packaging machine]
Next, a vertical pillow packaging machine equipped with the roll-up film support device 1 of the present invention will be described.
FIG. 7 is a perspective view showing the overall configuration of the vertical pillow packaging machine.
In FIG. 7, 30 is a vertical pillow packaging machine, 31 is a film (packaging material) supply section, 32 is a tension adjustment section, 32a is a rocking mechanism, 33 is a date printing section, 33a is a date printing device, 33b is a lifting roller, 34 34a is a hopper, 34b is a filling cylinder, 35 is a cylinder making unit, 35a is a former cylinder, 35b is a pressing member, 35c is a slide roller, 36 is a film feeding unit, 36a is a pulley , 36b is a feeding belt, 37 is a vertical sealing section, 37a, 37b are vertical sealing blocks, 38 is a horizontal sealing/cutting section, 38a, 38b are horizontal sealing blocks, 39 is a package discharge section, 39a is a belt conveyor, Fi is a In the film (packaging material), gr is a guide roller, MF is a winding film, Ba is a bag, Pc is a package, ts is a vertical seal portion, and ys is a horizontal seal portion.
The vertical pillow packaging machine main body 30 includes a film (packaging material) supply section 31, a tension adjustment section 32, a printing section 33, a packaged product supply section 34, a cylinder making section 35, a packaging material feeding section 36, a vertical sealing section 37, and a horizontal section. It is composed of a sealing/cutting section 38, a package discharge section 39, and the like.
The film supply section (packaging material) 31 is equipped with the roll-up film support device 1 of the present invention, and feeds out a film Fi serving as a packaging material from the roll-up film MF mounted on the shaft 10 (holder 11).
The tension adjusting section 32 includes a swinging mechanism 32a that swings a plurality of rollers, frames, etc., and adjusts the tension so that a sudden tension is not applied to the film Fi fed out from the film supply section 31.
The date printing unit 33 includes a date printing device 33a, a lifting roller 33b, etc., and prints the date on the film Fi.
The packaged product supply section 34 includes a filling cylinder 34b with a hopper 34a at the top, a packaged product input device (not shown), etc., and receives packaged products such as snacks fed from the packaged product input device. It is received by the hopper 34a and filled into the filling cylinder 34b.
The tube making section 35 includes a tube making device 35a, a pressing member 35b, a slide roller 35c, etc., and guides the film Fi, which is fed out from the film supply section 31 and has a date printed in the date printing section 33, by the slide roller 35c. , it is formed into a cylindrical shape using a cylinder maker 35a and pressed against the outer circumferential surface of the filling cylinder 34b by a pressing member 35b.
The film feeding section 36 has a pair of film feeding mechanisms equipped with a pulley 36a, a feeding belt 36b, a motor (not shown), etc. arranged on both sides of the filling cylinder 34b, and a film Fi wrapped around the outer peripheral surface of the filling cylinder 34b. is sent downward by a certain length.
The vertical seal section 37 includes vertical seal blocks 37a, 37b, a heater (not shown), etc., and vertically seals both ends of the overlapping film Fi that wraps around the outer peripheral surface of the filling cylinder 34b to form a vertical seal section ts. do.
The horizontal seal/cutting unit 38 includes horizontal seal blocks 38a, 38b, a heater (not shown), a cutting device (not shown), etc., and performs horizontal sealing on the vertically sealed film filled with the packaged product. A horizontal seal portion ys is formed by cutting the horizontal seal portion ys, a bag Ba is formed by cutting the center portion of the horizontal seal portion ys, and a package Pc in which the packaged item is stuffed into the bag Ba is produced.
The package discharge section 39 includes a belt conveyor 39a and the like, and discharges the package Pc by the belt conveyor 39a.

[Operation of attaching the winding film to the shaft]
8 to 10 are explanatory diagrams for explaining the operation of mounting the winding film MF on the shaft, in which FIG. 8 is a front view of the state before mounting the winding film MF on the shaft 10, and FIG. 10 is a front view of a state in which the winding film MF is mounted on the shaft 10, and FIG. 10 is a front view after the winding film MF is mounted on the shaft 10. FIG.
In the figure, MFe1 and MFe2 are the end faces of the winding film MF, Ha1 and Ha2 are the hands of the operator, and the outer shape and center hole Ch of the winding film MF are shown by two-dot chain lines.
First, the operator presses an operation button (not shown) installed on the frame 21 to operate the motor 23 so that the plate part 12a is in a horizontal state, and then, as shown in FIG. The hands Ha1 and Ha2 are placed in the hole Ch to lift the roll-up film MF, and the roll-up film MF is moved so that the center of the center hole Ch is near the tip side of the plate-like part 12a of the protrusion part 12.
The diameter D of the center hole Ch is slightly larger than the outer diameter of the shaft 10 (holder 11), and the center of the center hole Ch can be easily positioned near the tip side of the plate-like portion 12a.

Next, the operator moves the winding film MF in the horizontal direction (X direction), and as shown in FIG. Move the take-up film MF up to.
In this case, the width w of the tip 12as becomes smaller toward the tip (in the X direction), and the width w0 at the tip is approximately 1/2 of the diameter D of the center hole Ch, so the winding film MF The center hole Ch of the winding film MF can be easily inserted into the tip 12as (protrusion 12) without hitting the end surface MFe1 against the tip 12as (protrusion 12).
There is a wide space (portion indicated by halftone dots in FIG. 5) between the worker's hand Ha1 hung on the center hole Ch and the flat surface 12am of the plate-shaped portion 12a, and there is a large space (portion indicated by halftone dots in FIG. 5) that protrudes from the flat surface 12am. The operator can move the end surface MFe1 past the middle of the plate-shaped portion 12a without the hand Ha1 hitting the flat surface 12am or being caught between the flat surface 12am and the inner wall of the center hole Ch. The winding film MF can be moved until it comes to the desired position.
In this state, as shown in FIG. 9(b), the worker removes one hand Ha1 from the center hole Ch and places the upper inner wall of the center hole Ch onto the flat surface 12am of the plate-like portion 12a. I'll put it on.
Next, as shown in FIG. 9(c), the operator pushes the end surface MFe2 with his hand Ha2 to move the winding film MF in the horizontal direction (X direction).
In this case, there is no step between the cylindrical part 12c of the protruding part 12 and the holder 11, and the operator can easily move the inner wall of the center hole Ch from the inclined surface 12bm to the cylindrical part 12c and from the cylindrical part 12c to the holder 11. The winding film MF can be moved by sliding it.
Finally, as shown in FIG. 10, the operator positions the wound film in the X direction by abutting the end surface MFe1 against the side surface of the stopper 14, and causes the plurality of claws or protruding bands to protrude from the circumferential surface of the holder 11. Then, the mounted winding film MF is fixed to the shaft 10 (holder 11), and the mounting work of the winding film MF is completed.

[Operation to remove the remaining film from the shaft]
Next, a description will be given of an operation for removing the remaining wound film whose outer diameter is smaller than that of the wound film MF from the shaft 10 using a part of the wound film MF.
FIGS. 11A and 11B are explanatory diagrams illustrating the operation of removing the remaining winding film from the shaft. FIG. ) is a front view of the remaining wound film moved so that the center hole Ch is placed on the protrusion 12a, FIG. 12(c) is a front view of the remaining wound film lifted up, and FIG. It is a front view of a state where the winding film is separated from the shaft 10, and in the figure, MR is the remaining winding film, and MRe1 and MRe2 are the end faces of the remaining winding film MR.
First, as shown in FIG. 11(a), the plurality of claws or protruding bands protruding from the circumferential surface of the holder 11 were retracted to release the remaining winding film MR from being fixed to the shaft 10 (holder 11). After that, the end surface MRe1 of the remaining winding film MR is pushed with the hand Ha1, and the remaining winding film MR is slid along the shaft 10, so that the end surface MRe1 is aligned with the flat surface of the plate-like part 12a, as shown in FIG. 11(b). The remaining winding film MR is moved until it comes to a position above 12 am.
Next, as shown in FIG. 11(c), the hands Ha1 and Ha2 are hung over the center hole Ch to lift the remaining wound film MR, and as shown in FIG. ) and move the remaining film MR to a storage location.
In this case, there is a wide space (portion indicated by halftone dots in FIG. 5) between the worker's hand Ha1 hung on the center hole Ch and the flat surface 12am of the plate-shaped portion 12a, and there is a protrusion on the flat surface 12am. The operator can move the remaining wound film MR to the shaft 10 (the protruding part 12).

In the film roll support device of the present invention, when the roll film is attached to the shaft or the remaining roll film is removed from the shaft, the operator's hand holding the center hole of the roll film hits the tip of the shaft. The roll-up film can be attached to the shaft and the remaining roll-up film can be removed from the shaft without being caught between the tip of the shaft and the inner wall of the center hole of the roll-up film. Can be used for packaging machines such as horizontal pillow packaging machines, wrapping packaging machines, and overwrapping packaging machines.

1 Winding film support device 10 Shaft 11 Holder 12 Protruding portion 12a Plate portion 12am Flat surface 12as Tip portion 12b Inclined portion 12bm Inclined surface 12c Cylindrical portion 13 Rotating shaft 14 Stopper 20 Shaft support portion 21 Frame 22 Motor unit 23 Motor 24 Rotation Control section 24a Operation control section 24b Position detection section 30 Vertical pillow packaging machine 31 Film (packaging material) supply section 32 Tension adjustment section 32a Rocking mechanism 33 Date printing section 33a Date printing device 33b Lifting roller 34 Packaged product supply section 34a Hopper 34b Filling cylinder 35 Cylinder making section 35a Cylinder making machine (former)
35b Pressing member 35c Slide roller 36 Film feeding section 36a Pulley 36b Feeding belt 37 Vertical sealing sections 37a, 37b Vertical sealing block 38 Horizontal sealing/cutting sections 38a, 38b Horizontal sealing block 39 Package discharge section 39a Belt conveyor CA Center axis Ch Center Hole Fi film (packaging material)
MF Winding film MR Remaining winding film MFe1, MFe1 End faces MRe1, MRe1 End faces Ha1, Ha2 Hand Ba Bag Pc Packaging body gr Guide roller ts Vertical seal portion ys Horizontal seal portion.

Claims (3)

A winding film support device comprising a shaft into which a center hole of the winding film is inserted and mounted, and a shaft rotation means for rotating the shaft,
The shaft includes a holder into which a center hole of the winding film is inserted to hold the winding film, and a protrusion fixed to a distal end side of the holder,
The protruding portion includes a flat plate-shaped portion having a constant thickness and a pair of flat surfaces , and an inclined portion having a pair of flat sloped surfaces continuous with the flat surface ,
A roll-up film support device characterized in that the shaft rotation means includes a rotation control means for rotating the plate-shaped portion to a horizontal position. 2. The roll-up film support device according to claim 1, wherein the width of the distal end of the plate-like portion decreases as it goes further. The protruding part has a cylindrical part continuous to the inclined part, the outer diameter of the cylindrical part is the same as the outer diameter of the holder, and there is no step at the boundary between the cylindrical part and the holder. The roll-up film support device according to claim 1 or claim 2, wherein:

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