KR101521824B1 - Cutting apparatus of cylindrical plastic filmpaper - Google Patents

Abstract

The present invention is a cutting apparatus of a cylindrical plastic film paper, which prevents decreased productivity due to halts in work from time to time because of defects such as the paper being folded or rolled by the frictional heat and static electricity when a single layer film paper, the thickness of which is equal to or less than 50 microns, is cut half along the diagonal line thereof and slides out from a rotating drum. The present invention has a first air supplier unit (910) at one side of a rotating drum (500) to provide air to the space between a single layer film paper (700), which is cut into a single layer by a cutter (600), and the outer circumferential surface of the rotating drum (500) to lift the single layer film paper (700) with air and prevent the paper being stuck to the outer circumferential surface of the rotating drum (500). The present invention also has a second air supplier unit (920) installed at one side of the rotating drum (500) or a third air supplier unit (930) installed at the rear end of the rotating drum (500) to isolate the space between a cylindrical film paper (300) and the rotating drum (500) before being cut by the cutter (600) to facilitate the cutting of the film paper and to prevent the cutting line from being folded or rolled, thus enhancing productivity.

Description

[0001] The present invention relates to a cutting apparatus for a cylindrical plastic film,

The present invention relates to an apparatus for cutting a cylindrical plastic film, and more particularly, to a method of cutting a cylindrical plastic film by a cutter so as to prevent the single-ply film from sticking to the rotating drum by air, The present invention relates to a cutting apparatus for a cylindrical plastic film which can improve productivity.

Generally, when a plastic film sheet extruded into a tube type is made to be distributed in a film production factory in order to make a film for packing or a film for waterproofing (Roofing) used in various industrial fields, Kim is circulating in the state.

Here, the film or the waterproof film is mainly made of a polyethylene (PE) resin as a raw material, and the cylindrical film is produced by a continuous extrusion molding process in the longitudinal direction. Therefore, The film is formed with numerous directional patterns along the longitudinal direction.

The directional texture formed on the cylindrical film is actually a structure according to the polymer arrangement so that it is hard to be visually recognized from the surface of the cylindrical film. By virtue of such a polymer arrangement, a considerable tensile force is exerted in the direction orthogonal to the directionality However, even if the cylindrical film is folded into two layers, if the directional grain is formed in the same length direction, it is torn easily due to slight scratches or small forces.

 If the directional texture is not eliminated when the waterproof film is made with the cylindrical film having the directional texture in the longitudinal direction as described above, the film is torn along the texture direction during the construction or after the construction, It takes a lot.

Accordingly, when the cylindrical film is made into a film for wrapping or a film for waterproofing, it is necessary to eliminate the directional texture so that it can be prevented from being easily broken due to the external impact. Even if the diarrheal surface is ruptured by sharpness, .

Therefore, when the cylindrical film sheet is cut into a single sheet, when the sheet is cut into a spiral shape, the directional pattern is formed diagonally with respect to the longitudinal direction of the film sheet cut out as the single sheet, and two sheets of single- Each directional texture may be formed in an orthogonal form to each other.

That is, even if an impact is applied along the directional texture of one of the film sheets, the directional pattern of the other film sheets bonded to the other area is orthogonal to prevent the film from tearing, It can be said that it is the same as the absence.

However, it is difficult for a worker to artificially cut the cylindrical film sheet by a single-layer film which is inclined diagonally with respect to the longitudinal direction. The artificial cutting by manual operation takes a long time, There is a problem in that productivity is deteriorated due to a large number of grips and cost is high due to cost increase.

Accordingly, a cutting apparatus capable of rapidly and accurately cutting the cylindrical film web in a spiral shape so as to form a diagonal state of the directional texture improves productivity, is disclosed in Korean Patent Registration No. 10-825271 (published on Apr. 25, 2008 Quot; Cylindrical Plastic Film Sheeting ".

In the prior art, a shaft through which the power of the main motor is transmitted is installed on one rotary plate, a rotary force is applied to the rotary drum, and the other rotary plate with a drum insertion hole formed in the center is rotatably supported on the support roller. A film roll made by winding an extruded film wound around a longitudinal direction of the film is rotatably mounted on the inner side of the drum, and a circular rotary drum for opening the extruded film to a cylindrical shape is provided at the drum insertion hole of the other rotary plate, And the rotary drum is rotated so as to rotate at the same speed in the same direction and at the same speed. On one side of the rotating drum, one side of the extruded film is slanted at a predetermined angle in a helical shape to form a single- And the cut single-ply film is wound on the roll bar of the spool part , Has the advantage that this operation compared to the hand to be able to fulfill this condition at an angle diagonal to the extrusion-type film-base direction Results Continuous automatic cut spirally fast easy to improve performance.

Korean Patent Publication No. 10-825271 entitled "Cylindrical Plastic Film Sheeting Device" (issued on April 25, 2008)

As a cutting device of the prior art, when a film having a thickness of 60 to 65 microns (60 microns or more) is cut diagonally (diagonal direction of a directional grain) diagonally at a certain angle (?) By a cutter, And the film thickness is less than 50 microns, the thin film is cut off diagonally by the cutter. When the single-ply film slips off the rotary drum, frictional heat and static electricity are stuck on the rotary drum due to frictional heat and static electricity. There is a problem that the operation is interrupted from time to time and the productivity is lowered.

 Accordingly, it is an object of the present invention to provide an apparatus for cutting a cylindrical plastic film sheet, which is capable of improving productivity by smoothly performing work by preventing a phenomenon in which a cut single-sided film sheet adheres to a rotating drum and is folded or curled.

The present invention is characterized in that a first air supply unit for supplying air to the space between the outer peripheral surfaces of the rotary drum and the single-ply film cut out by a cutter is provided on one side of the rotary drum so that the cut- A second air supply unit is provided on one side of the rotary drum so as to supply air inwardly of the first air supply unit and a space between the cylindrical film and the rotary drum before being cut by the cutter is air- The third air supply unit is provided to smooth the cutting of the film and prevent the cutting line from being folded or curled, thereby improving the productivity. Thus, the above object can be effectively achieved.

In the present invention, when the cylindrical film is not cut on the rotary drum but the cylindrical film is cut out by the cutter into the single-layer film, the single-layer film adheres to the rotary drum and is prevented from being folded or curled in spite of frictional heat and static electricity The work can be smoothly performed, and the productivity can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a cutting device of a cylindrical plastic film according to the present invention. Fig.
2 is a plan view of a cutting apparatus provided with a first air supply unit and a second air supply unit, as viewed from above, according to the present invention;
Figure 3 is an enlarged view of Figure 2b.
FIG. 4 is a main oblique view showing two single-ply film sheets in which the cylindrical film is cut in a single ply and diagonally diagonally directed directional patterns are overlapped so that the directional patterns are orthogonal to each other.
Fig. 5 is a plan view of a main portion showing two sheets of single-ply film sheets cut according to the present invention in a state in which directional grains are bonded to each other in an orthogonal state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan view of a cut-off device provided with a first air supply unit and a second air supply unit according to the present invention in a state of being viewed from above, and FIG. 1 4 is an enlarged view of FIG. 2B. FIG. 4 is a perspective view showing a state in which two sheets of single-ply film sheets in which a cylindrical film sheet is cut in a single ply and diagonal lines of diagonal directions are obliquely crossed, And FIG. 5 is a plan view of the main part showing two folded single-ply film sheets according to the present invention in a state where directional textures are bonded to each other so as to be orthogonal to each other.

In the present invention, the power of the main motor 210 is transmitted to one side plate 120, which is supported by the support frame 110 and is rotated, The other side plate 140 provided with the drawing roller 130 that is rotated by receiving the power of the small motor 220 is installed on the supporting frame 110 to be rotatably supported by the supporting roller 111, 100); The cylindrical film 300 is detachably fitted to the spindle 121 provided on the inner surface of the one side plate 120 so as to be rotated integrally with the rotating body 100 and the cylindrical film 300, A film roll 400 which is unwound toward the ball 141; A tip portion 510 including an opening portion 511 is inserted into the other side plate 140 from the outside through a drum insertion hole 141 at a predetermined depth so as to be rotated in the same direction and at the same speed as the rotation axis 100, A rotary drum 500 provided with an auxiliary roller 520 in each of four corners of the corresponding tip 510 so as to be in contact with the rotary drum 130 to draw the film in a cylindrical shape; And is provided outside the other side plate 140 of the rotary drum 100 so that only one of the single layers of the film that is inserted into the rotary drum 500 and pulled out in a cylindrical shape forms a diagonal line with respect to the directional hair 710, A cutter 600 for making a single-piece film 700; A single sheet film wound around a roll bar 810 while pulling the single sheet film 700 tightly and a single sheet film 700 which is cut out by a single layer by the cutter 600 and a rotating drum 500 And a first air supply unit 910 for supplying air to the outer circumferential surface of the rotary drum 500. [

Reference numeral 122 in the drawing denotes a powder brake installed on brackets on both inner sides of the rotating plate so that the film roll is maintained at a constant releasing tension. Reference numeral 1000 denotes a fixed base for supporting the tip of the incised single- Reference numeral 1100 denotes a tension roller for pulling out one end of the single-ply film sheet by pulling it outward, and reference numeral 1200 denotes a motor for driving the tension roller.

In the present invention, in the film roll 400 of the spindle 121 provided on the inner surface of the one side plate 120 supported by the support frame 110, the embossed film is opened in a cylindrical shape by the rotary drum 500 When one side of the film is passed through the film passage hole of the other side plate 140, the one side of the film is obliquely cut by the cutter 600 in the form of a spiral at a predetermined angle [theta], and the cut single- 800 is rolled around the roll bar 810 is a general technical constitution.

However, the feature of the present invention is that when the cylindrical film web 300 is cut out by the cutter 600 into the single-ply film 700, the single roll film 700 is lifted from the rotary drum 500 by the air, So that the productivity can be improved.

That is, in the state of use of the incision apparatus according to the present invention, since the film roll 400 is rotatably inserted into the spindle 121 provided on the inner side surface of the side plate 120 of the spinneret 100, Is rotated in one direction, the cylindrical film 300 of the film roll 400 gradually loosens.

A powder brake 122 is provided on the inner surface of the one side plate 120 to control the rotation of the spindle 121 that rotates the film roll 400 so that the film web of the film roll 400 can always be released with a constant tension So that the film is not released rapidly.

The film unwinded from the film roll 400 as described above continues to be cylindrically shaped while passing through the rotary drum 500 while being cylindrically opened through the tip 510 of the funnel-shaped rotary drum 500.

The take-out rollers 130 installed on the other side plate 140 to rotate under the power of the small motor 220 are inserted into the rotary drum 500 and convey the film to the auxiliary rollers 500, And the film sheet sandwiched between the take-out roller 130 and the auxiliary roller 520 is gradually transferred toward the rear of the rotary drum 500 with the rotational force of the take-out roller 130 being applied thereto.

When the film is conveyed toward the rear of the rotary drum 500, a cutter 600 is provided outside the other side plate 140 of the rotary 100. The cutter 600 is configured such that the blade supports the film at a predetermined angle The film sheet to be moved forward is naturally made of a single-layer film 700 which is continuously cut in a spiral shape at a predetermined angle &thetas;, so that the directional texture 710 diagonally diagonal.

The leading end of the cut single-sided film 700 is supported by the fixed support 1000 and the tension roller 1100 driven by the motor 1200 pulls the one end of the single-ply film 700 outward, 700 are directed to the single-ply film winding unit 800 without drying.

Thereafter, the single-ply film 700 is pulled by the single-ply film winding unit 800 while being pulled tightly on the roll bar 810.

In the present invention, since the first air supply unit 910 is installed on one side of the rotary drum 500, the single-ply film 700 cut out by the cutter 600 and the outer peripheral surface of the rotary drum 500 The single-ply film 700 is excited from the surface of the rotary drum 500 by being supplied with the air, so that the single-ply film 700 is cut off or curled due to frictional heat and static electricity generated on the rotary drum 500 So that it can be smoothly wound on the roll bar 810.

In the present invention, the second air supply unit 920 is installed on one side of the rotary drum 500, that is, the air sprayed through the second air supply unit 920 is separated from the single-layer film 700 The air is supplied more inward than air ejected from the first air supply unit 910 through the clearance between the cylindrical drum 300 and the rotary drum 500 before the cutter 600 is cut, The cylindrical film sheet 300 is lifted by the rotary drum 500, so that the cutting can be smoothly performed and the cutting line can be prevented from being folded or curled.

The third air supply unit 930 is installed at the rear of the rotary drum 500. That is, when the air injected through the third air supply unit 930 is supplied through the opening 511 of the rotary drum 500, So that the cutting is performed more smoothly as in the case of the air sprayed from the second air supply unit 920 by separating the cylindrical film 300 before the cutter 600 is cut from the rotary drum 500 and the rotary drum 500, It is possible to effectively prevent folding or curling.

The second air supply unit 920 and the third air supply unit 930 installed in the rotary drum 500 separate the cylindrical film 300 and the rotary drum 500 before cutting to make the cutting more smooth, Since the line is prevented from being folded or curled, either one of them may be used.

100: rotating frame 110: supporting frame
111: support roller 120: one side plate
121: spindle 122: powder brake
130: Draw-out roller 140:
141: Drum insertion hole 210: Main motor
220: Small motor 300: Cylindrical film
310, 710: Directional texture 400: Film roll
500: rotating drum 510:
511: opening 520:
600: Cutter 700: Single layer film
800: Single-ply film spool Kimbu 810: Roll bar
910, 920, 930:
1000: fixed base 1100: tension roller
1200: motor

Claims (2)

In constituting the cutting device of the cylindrical plastic film paper,
The power of the main motor 210 is transmitted to one side plate 120 which is supported and rotated by the support frame 110 and is driven by the power of the small motor 220, The other side plate 140 provided with the support frame 130 is supported by the support roller 111 of the support frame 110 and is rotated to be rotated;
The cylindrical film 300 is detachably fitted to the spindle 121 provided on the inner surface of the one side plate 120 so as to be rotated integrally with the rotating body 100 and the cylindrical film 300, A film roll 400 which is unwound toward the ball 141;
A tip portion 510 including an opening portion 511 is inserted into the other side plate 140 from the outside through a drum insertion hole 141 at a predetermined depth so as to be rotated in the same direction and at the same speed as the rotation axis 100, A rotary drum 500 provided with an auxiliary roller 520 in each of four corners of the corresponding tip 510 so as to be in contact with the rotary drum 130 to draw the film in a cylindrical shape;
And is provided outside the other side plate 140 of the rotary drum 100 so that only one of the single layers of the film that is inserted into the rotary drum 500 and pulled out in a cylindrical shape forms a diagonal line with respect to the directional hair 710, A cutter 600 for making a single-piece film 700;
And a single-ply film winding unit 800 that pulls the single-ply film 700 in an unfolded state and rolls it around the roll bar 810,
A first air supply unit 910 for supplying air between the outer peripheral surface of the rotary drum 500 and the single-ply film 700 cut out by a single ply by the cutter 600 is provided at one side of the rotary drum 500
And the portion of the single-ply film 700 that is cut out is held by the air so as to be adhered to the outer circumferential surface of the rotary drum 500, thereby preventing the folded or curled state of the film.
The method according to claim 1,
The rotary drum 500 is provided at one side of the rotary drum 500 to supply air inward from the first air supply unit 910 through a clearance between the single-ply film 700 and the rotary drum 500 cut out by the cutter 600, A second air supply unit 920 for separating the cylindrical drum 300 and the rotary drum 500 from each other before air is blown into the drum 500;
The cylindrical film 300 and the rotary drum 500 before being cut into the cutter 600 while the air supplied through the opening 511 at the rear end of the rotating drum 500 is returned inside the extrusion type film 300, A third air supply unit 930 for separating the air from the air supply unit 930;
And the cutting line is not folded or curled so that the cutting line can be smoothly cut.

Images