JPH06262593A - Cutting device of sticky film - Google Patents

Abstract

PURPOSE:To provide a cutting device for manufacturing narrow long-winding adhesive tape, making improvements in operational safety by sharply reducing the time and labor for changing work of a cutting edge. CONSTITUTION:In a sticky film cutting device, where plural pieces of cutting edge holder 2 are installed in a holding rod 1 at regular intervals, and each cutting edge 5 is fittingly installed in respective recess groove parts 4 of this edge holder 2, a magnet 6 is installed on each bottom surface of these recess groove parts 4 of the holder 2, and the cutting edge 5 is attracted and locked to each bottom surface of the recess groove parts 4 of the holder 2 by dint of this magnet 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for producing an adhesive tape having a desired width by cutting a so-called adhesive film raw material in which a wide and long adhesive film is wound around a winding core into a narrow width. And a suitable adhesive film cutting device.

[0002]

2. Description of the Related Art A method for producing a large number of narrow and long adhesive tapes from a so-called original roll having a wide and long adhesive film original fabric wound around a winding core is known as a conventional technique. A holding rod is installed between the take-up roll and the winding roll, and a cutting device continuously provided at a spacing equal to the width of the adhesive tape to produce a large number of holders with cutting blades attached to the holding rod continuously. It is manufactured by winding it on a take-up roll while cutting it into a narrow tape (applicator and peripheral equipment, February 1977, Processing Technology Research Group, Yoshinobu Aoyama et al., Pp. 143-144). In addition to cellophane, synthetic resins such as polyethylene, oriented polypropylene and polyester are used as the material of the adhesive film.

[0003]

However, the material of the cutting blade used for cutting the adhesive film made of these materials is often relatively inexpensive such as SK steel and 13 chrome stainless steel. The cutting edge of the cutting blade is significantly worn due to the cutting of the adhesive film. Therefore, the operation of the manufacturing apparatus is stopped, and the cutting blade is frequently replaced with a considerable amount of labor and time.

In the above-mentioned cutting blade replacement work, the situation in which the sharpness is poor is judged from the cutting situation of the adhesive film,
The operation of the manufacturing apparatus is stopped, and the heavy holding rod in which the holders are connected is removed from the manufacturing apparatus and first moved to a place where replacement work can be performed. After that, loosen the screw of the holder fixed with a screw to the holding rod, rotate the holder 90 degrees and lift up, further loosen the fixing screw of the cutting blade at the tip of the holder, remove the cutting blade, Replace with a new cutting blade. Repeat this work over dozens of cutting blades,
After the work is completed, the holder is set on the holding rod, the level of the cutting edge of the cutting blade is adjusted, and the operation of the manufacturing apparatus is restarted.
It takes at least 30 to 40 minutes to replace the cutting blade.
It takes a certain amount of time, and since it is necessary to raise and lower the heavy holding rod to perform work, there is a problem in work safety, and productivity is significantly hindered.

The present invention has been made by paying attention to the problems in the conventional cutting device as described above, which saves labor for exchanging the cutting blade and significantly shortens the production interruption time.
An object of the present invention is to provide an adhesive film cutting device capable of improving work safety, improving production efficiency, and reducing costs.

[0006]

In order to achieve the above object, in the adhesive film cutting apparatus of the present invention, a plurality of cutting blade holders are provided on the holding rod at intervals, and the cutting blade holder is A groove is formed so that the cutting blade can be fitted and attached, and a magnet is provided on the bottom surface of the groove, and the cutting blade is attracted to the bottom surface of the groove of the cutting blade holder by the magnet. It is characterized by

In the present invention, one or a plurality of magnets are provided on the bottom surface of the concave groove portion of the holder, and the means for attaching to the bottom surface is not particularly limited, but it may be adhered by, for example, an adhesive or the like. In these magnets, the surface of the magnet and the bottom surface of the concave groove of the holder are flush with each other.
The magnet may be laid on the bottom surface of the groove of the holder.

In the present invention, the holder may be made of metal such as steel or aluminum, or may be injection-molded with other synthetic resin having excellent mechanical properties such as rigidity, for example, polycarbonate resin or polyacetate resin. .

[0009]

In the present invention, since the magnet is provided on the bottom surface of the concave groove portion of the cutting blade holder, and the cutting blade is attracted to the bottom surface of the concave groove portion of the cutting blade holder by the magnet, it is possible to replace the cutting blade in the replacement work. , It is not necessary to remove the holding rod of the holder that is heavy and has problems in workability and safety as in the past, and loosen the screw fixed to the holding rod to lift the holder and remove the cutting blade. It is possible to perform replacement work smoothly without any work, by simply removing the cutting blade from the holder and adsorbing and fixing a new cutting blade while it is still installed in the manufacturing equipment. .

[0010]

【Example】

[First Embodiment] FIG. 1 is a perspective view showing an example of the cutting device of the present invention, FIG. 2 is an exploded perspective view of a main part of a holder used in the cutting device of the present invention shown in FIG. 1, and FIG. FIG. 3 is a front view of the main part of the holder shown in FIG. 2, and FIG. In these figures, 1 is a holding rod made of steel, 2, 2, ... Is a holder made of aluminum, and the holding rod 1 is inserted into a mounting hole 22 provided in a mounting portion 21 at one end thereof, and a fixing screw 3 Are fixed to the holding rod 1 by means of the holding rods 2, and the distance between the holding members 2, 2, ... Is equal to the width of the adhesive tape to be manufactured. Reference numeral 4 denotes a recessed groove portion provided on the other end of the holder 2. As shown in FIG. 2, a plate-shaped magnet 6 is fitted and adhered to the recessed groove portion 4 to form a bottom surface of the recessed groove portion 4. Is formed by a plate magnet 6. 5 is a cutting blade, and the cutting blade 5 has a width equal to or slightly larger than the width of the concave groove portion 4,
The majority of the side surface is fitted into the concave groove portion 4, and then the concave groove portion 4
Is attracted to the plate-shaped magnet 6 provided on the bottom surface of the holder 2, and another portion, that is, a portion 15 to 20 mm from the tip is projected from the holder 2.

[Operation of First Embodiment] When the cutting apparatus of the present invention shown in FIGS. 1 to 3 is used, a holding rod 1 is installed above the moving adhesive film (not shown) in the width direction of the adhesive film, When the blade edges 51 of the cutting blades 5, 5, ... Are applied to the adhesive film, the adhesive film produces the respective cutting blades 5, 5 ,.
・ Adhesive tape is manufactured by cutting into strips at intervals and being wound up on a winding core.

The replacement of the cutting blade 5 is carried out by judging the wear of the cutting edge 51 of the cutting blade 5 from the cutting condition of the cutting end face of the tape and stopping the operation of the manufacturing apparatus, so that the holding rod 1 is removed from the manufacturing apparatus in the conventional manner. The holding rod 1 is rotated upward and fixed to a position where the blade edge 51 of the cutting blade 5 separates from the adhesive film without being removed, and in this state, the cutting blade 5 is sequentially removed from the concave groove portion 4, and a new cutting blade is obtained. This is performed by adsorbing and fixing 5 to the plate magnet 6.

[Second Embodiment] FIG. 4 is an exploded perspective view showing a main part of another example of the cutting device of the present invention, and FIG. 5 (a) is a cutting blade of a holder 4a of the cutting device of the present invention shown in FIG. 5 is a front view showing a state where 5 is fixed by suction, and (b) is a side view thereof. In the present embodiment, two cylindrical magnets 6a, 6a are embedded in the bottom surface of the recessed groove portion 4a of the holder 2a so that the adhered surfaces thereof are flush with the bottom surface and the suction surface of the cutting blade 5 is formed. Has been done. In addition, a locking groove 7 into which the cutting blade 5 is inserted and locked is formed in the root portion of the side wall of the recessed groove portion 4a. In this embodiment, the cutting blade 5 can be replaced by the same replacement work as in the first embodiment except that the cutting blade 5 is removed and attached from the front opening side along the locking groove 7. it can.

[0014]

According to the present invention, the labor and time required for exchanging the cutting blade can be greatly reduced, the production efficiency can be improved, and the safety of the operation can be improved. Therefore, it is suitable as a cutting device for manufacturing a large number of narrow and long rolled adhesive tapes from a wide and long adhesive film stock.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a cutting device of the present invention.

FIG. 2 is an exploded perspective view of a main part of a holder used in the cutting device of the present invention.

FIG. 3A is a front view of a main part of the holder shown in FIG.
(B) is the side view.

FIG. 4 is an exploded perspective view showing a main part of another example of the cutting device of the present invention.

5A is a front view of a main part of the holder shown in FIG. 4. FIG.
(B) is the side view.

[Explanation of symbols]

 1 Holding Rod 2, 2a Holding Tool 3 Fixing Screw 4, 4a Recessed Groove 5 Cutting Blade 6 Plate Magnet 6a Cylindrical Magnet 7 Locking Groove

Claims (1)

[Claims] [0001] 1. A holding rod is provided with a plurality of cutting blade holders at intervals, and a groove is formed so that the cutting blades of the cutting blade holder can be fitted and attached thereto. A device for cutting an adhesive film, wherein a magnet is provided on the bottom surface of the groove portion, and the cutting blade is attracted to the bottom surface of the concave groove portion of the cutting blade holder by the magnet.