JPS6315029Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for cutting film.

[Conventional technology]

When winding a film in a film winder or the like, the thinner the film, the lower the tension needed to wind it. For this reason, the tension in the edges of the film is particularly low and the film is fluffy, so that it is impossible to make cuts with a cutter from the width edge when cutting the film. For this reason, in the past, motors b and c as shown in FIG.
After making a cut d, the film a is cut by traversing the cutters b and c in a direction away from each other (in the direction of the arrow) by a movable screw f or the like driven by a motor e.

However, in the above-mentioned conventional method, the shape of the cut portion of the film a is poor as shown in FIGS. This had the problem of requiring a great deal of effort and time.

In addition, as a means to solve these problems, in recent years, Japanese Patent Application Laid-Open No. 59-36048 (Japanese Patent Application No. 57-142711)
As shown in No. 1, a technique has been proposed in which the film is cut by traversing a cutter blade in the width direction of the film.

[Problem that the invention attempts to solve]

However, in the above prior art, the attachment position (cutting angle) of the cutter blade to the film is fixed, and the cutting angle to the film cannot be adjusted.
A problem has arisen in which cutting (particularly notch) becomes impossible when the tension or the like changes.

Further, the above prior art is configured to cut the film while supporting the film near the cutting position by a spatula running sideways with the cutter blade, so the cutter blade only acts from one side of the film. This, together with the non-adjustable configuration, caused a problem in the reliability of the cut.

The present invention was developed in view of the above-mentioned problems, and it enables the cutter blade to be easily set in any position relative to the film, and cuts reliably from the width edge of the film and cuts across the film in a reliable and efficient manner. The purpose is to perform accurate cutting.

[Means for solving problems]

The present invention was developed in an attempt to solve the above technical problem, and includes a first cutter blade whose turning position can be adjusted in a direction parallel to the blade surface to arbitrarily adjust the cutting angle with respect to the direction of film movement. and,
In a state where the first cutter blade and the blade surface are substantially orthogonal and the cutting edges intersect, the angle of the cutting edge with respect to the film surface can be adjusted, and furthermore, the cutting angle with respect to the moving direction of the film can be arbitrarily adjusted. A holder having a cutter blade and slidably supporting both the cutter blades at the same time so as to adjust the position of the intersection of the cutter edges with respect to the width end position of the film is moved by a traverse drive device. This invention relates to a film cutter characterized in that it is provided so as to be movable in a direction.

[Effect]

Therefore, according to the present invention, it is possible to select and adjust the cutting angle and the cutting edge angle of the cutter blade so that the film can be cut in the best manner, thereby achieving reliable cutting and cutting.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, a cutter holder 3 capable of traversing in the width direction of the film 2 along a guide 1 is provided, and for example, a chain 4, a drive device 5, and driven sprockets 6, 7 drive the traverse of the cutter holder 3. A traverse drive device 8 is provided. A cutter device 9 that cuts the film 2 on the cutter holder 3 configured as described above.
will be established.

As shown in FIGS. 2 and 3A and 3B, the cutter device 9 has cutting edges 11' and 12' that intersect with each other, and has a cutting angle θ ₁ with respect to the moving direction R of the film 2.
It is composed of a horizontal cutter blade 11 attached to a pedestal 10 so that the cut angle θ ₂ can be arbitrarily adjusted, and a vertical cutter blade 12 separately attached to the pedestal 10 so that the cutting angle θ 2 can be arbitrarily adjusted. At this time, by adjusting the cutting angles θ ₁ and θ ₂ , the cutting edges 11' and 1
2' The mutual cutting edge pinching angle β is also changed.

The horizontal cutter blade 11 is attached to the pedestal 10 so that it can horizontally rotate A around a fulcrum pin 13 and its position can be fixed with a set bolt 15 through an elongated hole 14. Further, the vertical cutter blade 12 is
It is attached to the vertical cutter mounting plate 16 so that it can be rotated vertically C around a fulcrum pin 17 and its position can be fixed with a set bolt 19 through an elongated hole 18, and the vertical cutter mounting plate 16 is attached to the horizontal shaft 2.
0, supported on a T-shaped support member 22 so that its vertical angle B can be changed by adjusting a set bolt 21,
As shown in FIG. 3A, the blade surface S of the vertical cutter blade 12
The cutting edge angle α with respect to the film 2 can be arbitrarily set. Furthermore, the T
The vertical rod 23 of the mold support member 22 is connected to the vertical support member 24 provided on the frame 10, and the vertical cutter blade 12
The vertical position D and the horizontal rotation A ₂ can be fixed by a set bolt 25. With the above configuration, the cutting angles θ ₁ , θ ₂ , the cutting edge angle α, and the cutting edge pinching angle β of the cutting edges 11' and 12', which have been adjusted in mutual position, can be arbitrarily set to the optimum state. can be set.
Next, in order to be able to freely select the positional relationship with the film 2 in this optimally set state, it is necessary to make the mount 10 slidable in the E direction and pivotable in the F direction. .

For this purpose, as shown in FIGS. 2 and 4, a dovetail groove 26 is provided in the cutter holder 3, special inclined nuts 27 are inserted at required intervals within the dovetail groove 26, and a sliding plate 28 is placed on the cutter holder 3. via the pedestal 1
Further, set bolts 29 and 30 are provided which pass through the pedestal 10 and the sliding plate 28 and are screwed into the special inclined nut 27, and the penetrating portions of the set bolts 29 and 30 in the pedestal 10 are provided with an arc shape. Long holes 31 and 32 are provided.

The above cutter device 9 is moved by a traverse drive device 8.
The film 2 is cut by traversing along the film 2. That is, the film 2 is pressed perpendicularly to the running surface by the vertical cutter blade 12 to increase the tension of the film 2, and the film 2 is cut at the point where the two blades 11 and 12 intersect.

At this time, the film 2 may not be cut even if the cutting device 9 consisting of the horizontal cutting blade 11 and the vertical cutting blade 12 that intersects is simply traversed. This is because cutting conditions vary slightly depending on the properties of the film 2, its thickness, the magnitude of tension, etc.

However, as a result of various experiments, the inventor of this invention found that
It has been found that even when the cut is not performed as described above, it is possible to perform a good cut by particularly adjusting the cutting angles θ ₁ and θ ₂ and the cutting edge angle α of the cutter blades 11 and 12. Therefore,
As shown by the arrows in FIG. 2, the positions of the horizontal cutter blade 11 and the vertical cutter blade 12, in particular A ₁ , A ₂ , and B, are adjusted in accordance with the conditions of the film 2. By doing so, it is possible to make a reliable cut and perform a clean and good cut at the cut portion.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but may be configured so that the cutting edge angle α of the blade surface can be adjusted for both horizontal cutter blades and vertical cutter blades, and that a chain can be used as a traverse drive device. It goes without saying that other systems such as a cylinder system or a rack and pinion system may be used, and that various other changes may be made without departing from the gist of the present invention.

[Effect of idea]

According to the film cutter of the present invention described above, by adjusting the mutual cutting angle of the horizontal cutter blade and the vertical cutter blade and the cutting edge angle depending on the properties, thickness, tension, etc. of the film, the cut into the film can be made by traverse. An excellent effect can be achieved in that the film can be cut reliably and neatly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a detailed enlarged view of the cutter device shown in Figure 1, Figures 3A and 3B are explanatory diagrams showing the relationship between the cutting edge and the film, and Figure 4 is an explanatory diagram showing how the frame is attached to the cutter holder. , FIGS. 5 and 6 are explanatory diagrams showing the conventional film cutting method, and FIG.
This figure is an explanatory diagram of a conventional film cutter for carrying out the cutting method shown in FIGS. 5 and 6. 1 is a guide, 2 is a film, 3 is a cutter holder, 8 is a traverse drive device, 9 is a cutter device,
11 is a horizontal cutter blade, 12 is a vertical cutter blade, 1
5, 19, 21, 25, 29, and 30 are set bolts, 26 is a dovetail groove, 27 is a special inclined nut, and 28 is a sliding plate.

Claims (1)

[Scope of utility model registration request] a first cutter blade whose turning position can be adjusted in a direction parallel to the blade surface to arbitrarily adjust the cutting angle with respect to the direction of film movement; has a second cutter blade that can adjust the angle of the cutting edge with respect to the film surface in a state where the cutting edges intersect with each other, and furthermore, the cutting angle with respect to the moving direction of the film can be arbitrarily adjusted, and the cutting edge with respect to the width end position of the film 1. A film cutter, characterized in that a holder is movable in the width direction of the film by a traverse drive device, and the holder is configured to slidably support both of the cutter blades at the same time so as to adjust the position of the intersecting portion.