JPH0641832Y2 - Roll film cutting device for wrapping - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is suitable for a roll film cutting device for wrapping, particularly for a wide film, and is integrated with a support for supporting or accommodating the roll film. Regarding what is provided.

(Prior Art) A wrap film used for storing food placed on a plate or the like is stored in a box body such as a paper in a state of being wound in a roll around a heart tube. Sometimes, the film tip is pulled out from the opening of the lid of the box by a necessary length, and one side is cut by a saw blade-shaped cutting blade extending slightly in the edge of the box and extending parallel to the longitudinal direction of the heart tube. It is cut from the end.

Since the roll film and the box for accommodating the roll film are generally made of cardboard and are relatively light, the box is held by one hand and the film is pulled out by the other hand, and the film is cut from one end of the cutting blade. It was cut by pressing it against a cutting blade and used. This is very convenient and easy to use for a roll film whose film width is not so wide.

(Problems to be solved by the invention) However, in order to put a large number of foods on a large plate and store the foods for business use, an extremely wide film is required. If such a wide roll film is not used by accommodating it in the conventional box body as described above, the roll film and the box body are heavy, and even if the film is cut with one hand, the operation is difficult. Since the width of the film being cut is too wide and only one part of the film can be held with one hand, the cut films are partially overlapped and adhere to each other when the cutting is completed. So later, it has to be peeled off and put back in its fully unfolded condition. This is extremely troublesome, and if the degree of adhesion is strong, the above peeling may not be possible. Furthermore, when the film is cut, the film is lifted because it is not held over the entire width, despite its wide width, and the film is wrinkled or overlapped due to the pulling force in the width direction during cutting,
This is also the reason why one sheet cannot be kept in a spread state after cutting.

(Means for Solving Problems) The present invention solves the above-mentioned problems of the related art, and the film can be wrapped as it is at the time of cutting without the film sticking after cutting. It is an object of the present invention to provide a roll film cutting device suitable for wrapping, which is particularly suitable for a wide film.

In order to achieve the above-mentioned object, the present invention comprises a support part for supporting a wrapping roll film wound around a heart tube so that the wrapping roll film can be freely pulled out from the tip of the film, and a cutting part for cutting the drawn-out film. The cutting portion includes a rail body that extends substantially parallel to the axis of the heart tube and is fixed to the device, and a traveling cutter body that has a blade body and can be guided by the rail body to travel. However, in the rail body having a groove portion formed along the longitudinal direction of the rail body, at least one of the outer surfaces of the edge portions on both sides of the groove portion is formed of a resin layer having high adhesion to the film. A film holding surface is formed by a surface, and the blade body of the traveling cutter body is attached to the traveling cutter body so as to cross the surface connecting the outer surfaces of the edge portions on both sides of the groove portion and travel in the groove portion. , Composed of

In the present invention having such a structure, it is sufficient for the supporting portion to support the roll film so that it can be pulled out from the tip of the film, and as in the conventional case, the roll film is simply rotatably accommodated in the internal space. The storage box may be of any type, whether it is a storage box or a box having a shaft portion that rotatably supports the roll film by means of a core tube.

The rail body of the cutting portion is, as a matter of fact, sufficient to guide the traveling cutter body and to be provided with the groove portion for allowing the blade body to pass by traveling of the traveling cutter body. Yes, it doesn't matter what form it is.

Further, in the present invention, the above-mentioned film holding surface of the rail body itself is for holding the drawn-out film in the vicinity of the groove portion, and in order to improve the adhesiveness with the film, the material itself is It can be formed by using a high material, for example, a resin such as urethane rubber. The shape of the film holding surface may be, for example, flat on both sides of the groove portion of the rail body, but it may extend along the groove portion with a step in a plane perpendicular to the longitudinal direction of the rail body. The guide strip may be used to hold the film in close contact with the surface thereof. In the former case, that is, when the film holding surface is flat, the traveling cutter body may be provided with a gap or contact with the film holding surface. In case of contact,
Either a sliding type or a type using a guide wheel on which a traveling cutter body can roll can be used. In the latter case, that is, even when the guide strip is provided, the same form as in the former case can be adopted, but the fact that the guide strip has a step portion whose cross section is substantially the same as the guide strip causes tension in the film in the groove. It is desirable in that it can be done.

Further, when the blade edge of the blade body has an inclination angle with respect to the traveling direction, the film can be cut better.

(Operation) According to the present invention as described above, the film is cut in the following manner.

First, when the length of the wrapping roll film rotatably supported by the support portion is pulled out and the length beyond the rail body having the groove reaches the desired length, the film is brought into contact with the film holding surface of the rail body. At the very least, hold it here closely. That is, the planned cutting position of the film maintains the tension state at least at one side edge of the groove of the rail body.

In this state, the traveling cutter body is caused to travel from one side end side to the other side end side of the film under the guidance of the rail body. The traveling may be manual or electric. Since the blade body is attached to the traveling cutter body in a state of protruding into the groove, and the vehicle travels as it is, the film is cut in a straight line by the blade body.

When the blade holder of the traveling cutter body has a guide wheel, the flat surface at both edges of the groove is used to cut the film while pinching the film, so the tension state at the time of cutting is secured. And there are no wrinkles.

Further, when the guide strip is provided on the rail body and the traveling cutter body also has a step corresponding to this, the film is more tense in the groove prior to cutting by the step, Even if there is some slack in the initial close contact holding state, this will disappear and reliable cutting will be performed.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the entire first embodiment of the device of the present invention. In addition, in order to clarify the direction in the figure, orthogonal coordinates XYZ are set in the three-dimensional space.

In the figure, reference numeral 1 is a box for rotatably accommodating a roll film 2, a base 11 extending in the X direction, and the base.
It has an inverted L-shaped lid body 12 rotatably connected to the rear edge of the Y negative direction 11 and support portions 13 rotatable at both ends of the base portion 11 in the X direction. . The supporting portion 13 supports the core tube 21 of the roll film 2 so as to rotatably support the core tube 21 from both sides.
It is in the form of a protrusion that is loosely fitted to.

A rail body 4 extending in the X direction is fixedly provided at the front edge portion of the base portion 11 in the positive Y direction over at least a range longer than the width of the roll film 2, and a blade body is provided on the rail body 4. The traveling cutter body 5 that it has is guided so that it can travel freely, and the cutting portion 3 is formed by the rail body 4 and the traveling cutter body 5.

As shown in FIG. 2, the rail body 4 has a substantially quadrangular cross-sectional shape in the YZ plane, a groove portion 41 extending in the X direction at the substantially central position is formed on the upper surface, and the film is formed on both side edges thereof. A band member made of a resin having a high adhesiveness, for example, urethane rubber is adhered, and the band member forms guide strips 42, 42 '.

On the other hand, the traveling cutter body 5 includes a block body 51 that is guided to travel in the X direction inside the rail body 4, a blade body holding body 52 located above the rail body 4 and having a blade body 53, and The groove portion 41 penetrates in the Z direction, and includes a connecting body 54 that connects the block body 51 and the blade body holding body 52.

The traveling cutter body 5 will be described with reference to FIG. 3 which is a sectional view taken along the line III-III of FIG.
Is a wear-resistant and self-lubricating resin,
Dimensions with a small space inside the rail body 4
It is made in shape. A recess 51A that opens in the Y direction and corresponds to the groove 41 and penetrates in the X direction.
Are formed. Further, a screwing hole 51B is formed in the right portion and reaches the recess 51A. In addition,
It suffices that the resin is applied only to the surface guided by the rail body, and the guided surface does not have to contact the entire inner wall of the rail body.

The blade body holder 52 located on the rail body 4 is made of substantially the same material as the block body 51.
A recess 52B that opens downward and penetrates in the X direction is formed at a position corresponding to the recess 51A, and holes 52C and 52D for screwing are provided in the left and right portions, respectively. Has reached.

The block body 51 and the blade body holding body 52 have respective concave portions.
"A" -shaped connecting plate inserted into 51A and 52B from the X direction
Connected by 54. The connecting plate 54 has the concave portion 51.
Screw 5 in holes 51B, 52D after being inserted into A, 52B from the X direction
The block body 51 and the blade body holding body 52 are fixed by 6 and 57, respectively, and they are connected while keeping a predetermined space therebetween. The disc-shaped blade 53 is fixed to the blade holder 52 via the connecting plate 54 by the screw 59 in the hole 52C. Blade 53
Since it has a disk shape, its blade edge is inclined in the X direction, which is the traveling direction of the blade, and intersects the surface connecting the two guide strips 42, 42. The constricted portion of the connecting plate 54 is narrower than the blade body 53 in the X direction at the position of the upper surface of the guide strip 42.

Further, the lower surface of the blade holder 52 has a shape that substantially matches the cross-sectional shape of the upper surface of the rail body 4 on the YZ plane with a slight gap, and forms a recess 52E that receives the guide strip 42. It has a stepped portion 52F. The step portion 52F is formed so as to be inclined upward in the X positive direction and the negative direction.

Next, how to cut the film according to the present embodiment having such a configuration will be described.

First, the traveling cutter body 5 is positioned at one end of the rail body 4.

The leading end of the roll film 2 is pulled out so that the film beyond the rail body 4 has a desired length, and the roll film 2 is brought into contact with the rail body 4 below. Then, as shown by the chain double-dashed line F in FIG. 3, the film is held in close contact with the upper surfaces of the guide strips 42, 42.

In this state, the traveling cutter body 5 is caused to travel manually from the one end position to the other end. At this time, the traveling cutter body 5 travels with its block body 51 guided in the rail body 4.

In the above, since the blade body holding body 52 is integrated with the block body 51 via the connecting plate 54, the block body 51
Will be traveling with. At this time, the stepped portion 52F of the blade holder 52 pulls the film in the same direction on the side of the guide strips 42, 42 'in the Y direction, so that the above-mentioned adhered film is tensioned in the Y direction. . Even if there is some slack between the guide strips 42, 42 when the film is initially in close contact, the slack is eliminated by being pulled in the Y direction by the step 52F. In this state, the blade body 53 in the groove 41 precedes the constricted portion of the connecting plate 54, so that the film is cut by the blade body 53.

Thus, when the traveling cutter body 5 reaches the other end of the rail body 4, the film is cut in a straight line across the entire width. When the traveling cutter body 5 is made symmetrical with respect to the YZ plane as in the illustrated example, the X forward direction and the X
The cutting can be performed by any movement in the negative direction.

Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, the step portion 52'F of the blade holder is formed by the guide strip 42 '.
It is characterized in that it has a shape projecting downward even on the inner edge side of. By doing this, the guide strip will be
The film F, which is on the surface connecting the upper surfaces of 42 'and 42', is pressed downward during cutting, so that the tension becomes stronger and the cutting is performed very reliably.

Next, a third embodiment of the present invention will be described with reference to FIG.

In the above-mentioned two embodiments, the film was pulled by the step-shaped guide strips, but in this embodiment, the closely adhered film is held by the guide wheel that moves in contact with the flat rail body surface. It is characterized by being cut.

In FIG. 5, the blade body holder 52 ″ includes guide wheels 52 ″ F and 52 ″ F which are rotatable around a shaft 52 ″ G, and are attached to the rail body 4
The groove portion 41 ″ has a flat surface on both edges of the groove portion 41 ″ so as to roll on contact with the flat surface. By doing so, the film F that is initially in close contact can be surely cut without sagging by the cutting. The wheel may be a guide strip as in the previous embodiment or a step similar to this, so that tension can be applied to the film during cutting.

(Effect of the Invention) As described above, according to the present invention, the rail body having the groove parallel to the core tube of the roll film is arranged, and the blade body of the traveling cutter body which is guided by the rail body and travels is in the groove portion. Since the film is cut by running the blade while keeping the film in close contact with the side edge of the groove, the film can be cut easily and surely in a straight line, and at the time of cutting the film This brings about an effect that there is no occurrence of creases or partial overlapping and close contact. Especially for a wide film, it is possible to pull out the film with both hands and to cut it easily and surely, so if you place a plate etc. on the side of the box, you can immediately perform wrapping work, The effect is even greater.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire first embodiment of the present invention,
FIG. 2 is a partially cutaway perspective view showing an enlarged cutting portion of the apparatus shown in FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is a traveling cutter body of a second embodiment of the present invention. FIG. 5 is a sectional view showing an essential part of a traveling cutter body according to a third embodiment of the present invention. 13 …… Supporting part 2 …… Roll film 3 …… Cut part 4 …… Rail body 41 …… Groove 42; 42 ′ …… Guide strip 5 …… Cutter body 51 …… Block body 52 …… Blade body holding Body 53 …… Blade 52F, 52 ″ F …… Step 52 ″ F …… Guide hole

Claims (5)

[Scope of utility model registration request] 1. A support portion for supporting a roll film for wrap wound around a core tube so as to be freely drawn out from the tip of the film.
A cutting part for cutting the drawn film, the cutting part extending substantially parallel to the axis of the heart tube and being immovably provided with respect to the device; A traveling cutter body capable of traveling while being guided, and a rail body having a groove portion formed along the longitudinal direction of the rail body, wherein at least an outer surface of an edge portion on both sides of the groove portion is provided. On the other hand, the film holding surface is formed by the surface of the resin layer having high adhesiveness to the film, and the blade body of the traveling cutter body intersects the surface connecting the outer surfaces of the edge portions on both sides of the groove portion, and the inside of the groove portion. A wrapping roll film cutting device, which is attached to a traveling cutter body so as to travel. 2. A utility model registration claim characterized in that the traveling cutter body comprises a block body which is guided by a rail body for traveling, and a blade body holding body which is connected to the block body and has a blade body. A roll film cutting device for wrapping according to the range (1). 3. The film holding surface has a stepwise shape in a cross section perpendicular to the longitudinal direction of the rail body and is formed by one surface of a guide strip provided along the edges on both sides of the groove of the rail body, The wrap according to claim (1), characterized in that the body-holding body has a step for guiding, the cross section of which is substantially the same as that of the step-shaped guide strip. Roll film cutting device. 4. The utility model registration claim (1), wherein the blade holder has a guide wheel that rolls in contact with flat surfaces on both edges of the groove of the rail body. ) A roll film cutting device for wrap as described in the above item. 5. A cutting apparatus for a wrapping roll film according to claim 1, wherein the blade has a blade edge having an inclination angle with respect to the traveling direction.