JP2005297092A - Trimming device of film roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for efficiently and economically trimming a film roll without impairing quality of the film roll. <P>SOLUTION: This trimming device has a machine table 11, a shaft member 20 having a rotary gear part 25 and inserted into and integrally fixed to a paper tube of the film roll, a shaft driving part 30 for holding a shaft member, having a gear part 31 and a motor 35 meshing with the rotary gear part and rotating the film roll at a predetermined speed, a film cutting arm part 40 capable of freely adjusting a position in the shaft direction of the film roll and capable of being brought into pressure contact with a circumferential surface of the film roll, a film cutting blade 50 held at a predetermined angle in the film cutting arm part so that a blade part side surface does not contact with a cutting surface of the film roll, a paper tube cutting arm part 60 capable of freely adjusting a position in the axis direction of the paper tube and capable of being brought into pressure contact with a circumferential surface of the paper tube, a paper tube cutting blade 70 held in the paper tube cutting arm part, and a surplus film winding part 80 for winding a surplus film F2 cut by the film cutting blade. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for cutting a film roll in which a synthetic resin film is wound around a paper tube, and more particularly, to a film roll trimming apparatus that relatively easily cuts an edge of a predetermined width of the film roll.

  A film roll (raw material) in which a synthetic resin film is wound around a paper tube to form a roll may be trimmed to a predetermined width according to a user's request. Conventionally, for example, a trimming device 100 shown in FIG. 9 is known as a device for trimming such a film roll relatively easily.

  In this trimming apparatus 100, as shown in FIG. 9, film cutting blades (tip saws) 120 (V) having a diameter larger than that of the film roll R above and below the film roll R around which the synthetic resin film F is wound around the paper tube P. Blade) and 130 (M blade) are arranged. Then, the film roll R and the film cutting blades 120 and 130 are respectively rotated in predetermined directions, and the film roll R is cut. Reference numeral 110 denotes a shaft member of the film roll R.

  However, when this trimming apparatus 100 is used, as shown in FIG. 10, the film 141 is in contact with the cutting surface 141 of the cutting part 140 of the film roll R and the blade part side surfaces 121 and 131 of the film cutting blades 120 and 130. The roll R is cut. Therefore, friction (friction heat) is generated between the cut surface 141 of the film roll R and the blade side surfaces 121 and 131 of the film cutting blades 120 and 130, and a low melting point synthetic resin film (for example, an unstretched polypropylene film or a straight film). When trimming a chain low density polyethylene film or the like, there is a problem that the cut surface 141 is melted and the film F is fused. In addition, in this trimming apparatus 100, since the film roll R is directly cut by the film cutting blades 120 and 130, the cutting portion 141 of the film roll R has the thickness of the film cutting blades 120 and 130 as shown in the figure. There was a problem that loss occurred, it was difficult to cut with accurate dimensions, and cutting waste was generated.

  As another device of this type, for example, a slitter device 150 as shown in FIG. 11 is known (see, for example, Patent Document 1). The trimming device 150 includes a shaft member 160 that rotatably holds a film roll R around which a synthetic resin film F is wound around a paper tube P, a film cutting blade 170 that cuts the film roll R to a predetermined width, And a winding unit 180 for winding the synthetic resin film F3 cut by the film cutting blade. Reference numeral 161 is a guide member of the cut synthetic resin film F3, 171 is a guide roller for controlling the cutting depth of the cutting blade 170, 172 is a guide rail that allows the cutting blade 170 to be raised and lowered, and 181 is a shaft of the winding unit 180. A member, 182 is a paper tube around which the cut synthetic resin film F3 is wound, and 190 is a film roll of the cut synthetic resin film.

  When slitting a predetermined width of the film roll R in the slitter device 150, the film cutting blade 170 is positioned at a predetermined position in the width direction of the film roll R as shown in FIG. The cutting edge of the film cutting blade 170 is brought into contact with the circumferential surface rf. Then, the film roll R is rotated in a predetermined direction to cut the synthetic resin film F into a predetermined width, and the cut synthetic resin film F3 is wound around the paper tube 182 by the winding unit 180 through the guide member 161. The

In this slitter apparatus 150, a synthetic resin film F3 having a predetermined width is cut from a film roll R which is a raw fabric, and the cut synthetic resin film F3 is rolled back again by a winding unit 180 into a product. It is said. However, in such a method, there is a possibility that foreign matters such as dust may be mixed when the synthetic resin film F3 is rewound, and there is a problem that the quality deteriorates. For this reason, it has been disadvantageous in terms of economy and efficiency, such as preparing environmental facilities and performing separate quality inspections in order to prevent contamination by foreign substances.
Japanese Patent Laid-Open No. 10-286794

  This invention is made in view of such a situation, and provides the apparatus which can trim a film roll efficiently and economically without impairing the quality of a film roll.

  That is, the invention of claim 1 is an apparatus (10) for cutting an edge (E) of a predetermined width of a film roll (R) in which a synthetic resin film (F) is wound around a paper tube (P). A shaft member (20) that includes a machine base (11) and a rotating gear portion (25), is inserted through the paper tube of the film roll and is fixed integrally with the film roll, and the shaft member is attached to the machine base. A shaft drive section (30) that includes a gear section (31) and a motor (35) that are detachably held and meshed with the rotation gear section of the shaft member, and that rotates the film roll at a predetermined speed, and the film roll A film cutting arm portion (40) disposed on the machine base so that the position thereof can be adjusted in the axial direction of the film roll and can be pressed against the circumferential surface of the film roll at a predetermined pressure, and the cutting surface of the film roll And a predetermined angle so that the blade side does not touch Accordingly, the film cutting blade (50) held on the film cutting arm portion so as to freely rotate can be press-contacted to the circumferential surface of the paper tube at a predetermined pressure so that the position can be adjusted in the axial direction of the paper tube. The paper tube cutting arm portion (60) disposed on the machine base, the paper tube cutting blade (70) held on the paper tube cutting arm portion so as to be freely rotatable, and the film cutting blade. The film roll trimming apparatus includes an excess film winding unit (80) for winding the excess film (F2).

  The invention according to claim 2 relates to the film roll trimming device according to claim 1, wherein the film cutting blade is a single blade in which the cutting surface side of the film roll is a flat surface.

  Invention of Claim 3 has the guide part of the surplus film in the said film winding part, and the tension adjustment member (90) which moves up and down by the tension | tensile_strength of the said surplus film is arrange | positioned at the said guide part. The film roll trimming apparatus according to the present invention.

  According to the film roll trimming device of the first aspect of the present invention, a machine base, a shaft member that includes a rotating gear portion, is inserted into a paper tube of the film roll and is fixed integrally with the film roll, and the shaft A shaft drive unit that includes a gear unit and a motor that detachably holds the member on the machine base and meshes with the rotation gear unit of the shaft member, and rotates the film roll at a predetermined speed; and an axial direction of the film roll The film cutting arm portion arranged on the machine base so as to be adjustable in position and capable of being pressed against the circumferential surface of the film roll with a predetermined pressure, and the cutting surface of the film roll and the side surface of the blade portion do not contact each other. And a film cutting blade held on the film cutting arm portion at a predetermined angle so as to freely rotate, and a predetermined pressure with respect to the circumferential surface of the paper tube, the position of which can be adjusted in the axial direction of the paper tube. A paper tube cutting arm portion disposed on the machine base so as to be press-contactable with the paper tube, a paper tube cutting blade held on the paper tube cutting arm portion so as to be freely rotatable, and an excess film cut by the film cutting blade Since the device has a surplus film take-up unit that winds up the film, the cut surface of the film roll is not fused, cutting with accurate dimensions is possible, and contamination with foreign matter can be avoided. , Product quality can be maintained.

  According to the film roll trimming device of the invention of claim 2, in the invention of claim 1, the film cutting blade is a single blade in which the cutting surface side of the film roll is flat. Therefore, contact between the cut surface side of the film roll and the side surface of the blade portion of the film cutting blade can be avoided with an extremely simple configuration.

  According to the film roll trimming device of the invention of claim 3, in the invention of claim 1, the film winding part has a guide part of the surplus film, and the guide part moves up and down by the tension of the surplus film. Since the tension adjusting member to be disposed is disposed, it is possible to prevent work interruption due to excessive winding tension or sagging during winding of the surplus film, and efficient work can be performed.

The present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic sectional view showing an embodiment of the trimming apparatus according to the present invention, FIG. 2 is a sectional view showing a shaft member and a shaft driving portion of FIG. 1, and FIG. 3 shows a film cutting arm portion and a paper tube cutting arm portion. 4 is a side view showing the operating state of the film cutting arm portion and the paper tube cutting arm portion, FIG. 5 is a top view of the main portion showing the cutting state of the film roll, and FIG. 6 is the cutting state of the paper tube. FIG. 7 is a side view of the winding unit, and FIG. 8 is a top view of the winding unit.

  As shown in FIG. 1, a film roll trimming apparatus 10 according to the present invention is an apparatus for cutting out an edge of a predetermined width of a film roll R in which a synthetic resin film F is wound around a paper tube P. The base 11, the shaft member 20, the shaft drive unit 30, the film cutting arm unit 40, the film cutting blade 50, the paper tube cutting arm unit 60, the paper tube cutting blade 70, and the surplus film winding unit 80 Have In the figure, reference numerals 12 and 13 are guide rollers for the surplus film F2, 14 is a guide ring for the surplus film F2, 15 is a side bar of the machine base 11, 16 is a rail member attached to the side bar 15, and 17 is the rail. It is a position adjusting member that positions the film cutting arm portion 40 and the paper tube cutting arm portion 60 via the member 16.

  As shown in FIG. 2, the shaft member 20 includes a rotation gear portion 25, and is inserted into the paper tube P of the film roll R and fixed integrally with the film roll R. In the shaft member 20 of the embodiment, one end of the paper tube P of the film roll R is fixed through a tapered portion 22 on one side of the shaft main body 21, and an elastic body such as silicone rubber from the other end of the paper tube P. The crimping member 23 is inserted, the nut member 24 is tightened from the outside to pressurize the crimping member 23, and the paper tube P is pressed against the taper portion 22 by the applied pressure, whereby the film The roll R is fixed to the shaft member 20. In addition, the crimping | compression-bonding member 23 which consists of an elastic body is arrange | positioned according to the cutting position CC of the film roll R. FIG. This is to prevent the spilling of the paper tube cutting blade 70 described later even if it contacts the shaft member 20 after the paper tube P is cut. The shaft member 20 is not limited to this example, and an appropriate member that can be inserted into the paper tube P and fixed integrally with the film roll R can be used.

  The shaft drive unit 30 includes a gear unit 31 and a motor 35 that detachably hold the shaft member 20 on the machine base 11 by bearing units 36 and 37 and mesh with the rotating gear unit 25 of the shaft member 20. The film roll R is rotated at a predetermined speed. Reference numeral 32 is a drive gear portion that is rotationally driven by the motor 35, 33 is a driven gear portion that meshes with the drive gear portion 32, 32A and 33A are rotation shafts, and 38 and 39 are cover members of the bearing portions 36 and 37, respectively.

  As shown in FIG. 3, the film cutting arm portion 40 can be adjusted in position in the axial direction of the film roll R by the position adjusting member 17 disposed on the side bar 15 of the machine base 11 via the rail member 16. ing. Moreover, as understood from FIGS. 4 and 5, the film cutting arm portion 40 is configured to be capable of being pressed against the circumferential surface rf of the film roll R with a predetermined pressure. For example, a known air cylinder device 41 is used for the film cutting arm portion 40, and a film cutting blade holding portion 42 that holds a film cutting blade 50 to be described later is advanced by the cylinder device 41, and the film cutting blade 50 is moved forward. The film roll R is pressed against the circumferential surface rf. In addition, since the film roll R is so hard that it is hard to cut | disconnect near the center part where the film is pressed, the pressure which press-contacts to the said film cutting arm part 40 according to the hardness of the film roll R is adjustable. A pressure adjusting means may be provided. Thereby, the film roll R can be easily cut even in the vicinity of the center of the film roll R pressed with the film.

  As is well understood from FIG. 5, the film cutting blade 50 has a predetermined angle θ so that the cutting surface r1 of the film roll R and the side surface 51 of the blade portion do not contact each other, and the film cutting blade holding portion 42 of the film cutting arm portion 40. Are held freely rotatable. The film cutting blade 50 is preferably a single blade whose blade surface 51 on the cutting surface r1 side of the film roll R is flat as defined in the invention of claim 2. Thereby, contact with the cutting surface r1 of the film roll R and the blade part side surface 51 of the film cutting blade 50 can be avoided with an extremely simple configuration. In the film cutting blade 50, the blade angle and the predetermined angle θ held by the film cutting arm portion 40 are appropriately set according to the material of the film to be cut.

  As shown in FIG. 3, the position of the paper tube cutting arm portion 60 is adjustable in the axial direction of the paper tube P by the position adjusting member 17 disposed on the column 15 of the machine base 11 via the rail member 16. Yes. As can be understood from FIGS. 4 and 6, the paper tube cutting arm portion 60 is configured to be capable of being pressed against the circumferential surface pf of the paper tube P with a predetermined pressure. In this paper tube cutting arm portion 60, a known air cylinder device 61 can be used in the same manner as the film cutting arm portion 40, and the paper tube cutting blade holding portion 62 holding a paper tube cutting blade 70 described later is advanced. Then, it is pressed against the circumferential surface pf of the paper tube P.

  As shown in FIGS. 4 and 6, the paper tube cutting blade 70 is held by the paper tube cutting arm 60 so as to be freely rotatable. As the paper tube cutting blade 70, for example, a double-edged cutting blade is preferably used. By using the paper tube cutting blade 70 as a double-edged blade, generation of cutting waste of the paper tube P when cutting the paper tube P can be suppressed, and the cut surface of the paper tube P can be leveled.

  As can be understood from FIGS. 3 and 4, in this embodiment, each of the film cutting arm portion 40 and the paper tube cutting arm portion 60 is integrated by a holding plate 18 provided on the position adjusting member 17. Is held in. Therefore, the position of the film cutting arm unit 40 and the paper tube cutting arm unit 60 can be adjusted simultaneously by the position adjusting member 17. Reference numeral 18A denotes an attachment member for attaching the film cutting arm portion 40 to the holding plate 18, 18B denotes an attachment member for attaching the paper tube cutting arm portion 60 to the holding plate 18, and 19A denotes a holding member for holding the film cutting arm portion 40 to the holding plate 18. , 19B are holding members for holding the paper tube cutting arm portion 60 on the holding plate 18.

  The surplus film winding unit 80 winds the surplus film F2 cut by the film cutting blade 50, and as shown in FIGS. 7 and 8 and defined as the invention of claim 3, the surplus film It is preferable to arrange a tension adjusting member 90 that has a guide portion 85 of F2 and moves up and down by the tension of the surplus film F2 in the guide portion 85. Reference numeral 81 in the figure denotes a shaft portion of the surplus film winding portion 80, 82 denotes a paper tube for winding the surplus film F2 inserted through the shaft portion 81, and 83 denotes a winding to wind the surplus film F2 in a roll shape. 84, a surplus film roll in which the surplus film F2 is rolled, 86 is a top guide roller of the guide portion 85, 87 is a lower guide roller of the guide portion 85 moved up and down by the tension adjusting member 90, and 88 is a surplus film F2. , 91 is a weight that adjusts the tension of the tension adjusting member 90.

  Next, the operation of the trimming apparatus 10 of the embodiment will be described. First, the shaft member 20 is inserted into and fixed to the paper tube P of the film roll R, and the film roll R is held on the bearing portion 36 of the drive member 30 via the shaft member 20. Next, the film cutting arm 40 is positioned in accordance with the edge E having a predetermined width of the film roll R to be cut.

  After positioning the film cutting arm portion 40, the film cutting blade 50, which is held on the film cutting arm portion 40 so as to be freely rotatable at a predetermined angle θ, is pressed against the circumferential surface rf of the film roll R with a predetermined pressure. . Then, the motor 35 of the driving member 30 is operated to rotate the film roll R at a predetermined speed, and the cutting of the edge E having a predetermined width of the film roll R is started. At that time, as shown in FIG. 5, the cut surface r1 of the cut film roll R1 and the blade side surface 51 of the film cutting blade 50 are not in contact with each other. Therefore, the film F1 of the film roll R1 is melted by melting the cut surface r1. Wearing can be prevented.

  Further, the surplus film winding unit 80 operates in conjunction with the rotation of the film roll R, and the surplus film F2 cut by the film cutting blade 50 is placed on a plurality of guide portions 85 as shown in FIG. The film is alternately passed through the guide roller 86 and a plurality of lower guide rollers 87 to be wound up as an excess film roll 84. At that time, since the tension adjusting member moves the guide roller 87 up and down by the tension of the surplus film F2 (see FIG. 7), excessive winding tension is not applied to the winding member 83. Furthermore, since the distribution member 88 operates, the winding of the surplus film F2 is not biased. Thereby, when winding the surplus film F2, it is possible to prevent the occurrence of winding tightening.

  After the film roll R is cut by the film cutting blade 50, the paper tube cutting blade 70 that is held by the paper tube cutting arm 60 so as to freely rotate is then predetermined with respect to the circumferential surface pf of the paper tube P. The paper tube P is cut by being pressed by pressure. At this time, as shown in FIG. 6, the paper tube cutting blade 70 has a slight gap S so that the blade portion side surface 71 on the cutting surface rf side of the cut film roll R1 does not contact the cutting surface rf. It is positioned with a gap. By rotating the paper tube P in this state, the unnecessary portion P2 of the paper tube P is cut off. The remaining paper tube P1 is slightly protruded from the cut surface r1 of the film roll R1.

  Thus, according to the trimming apparatus according to the present invention, the film roll can be trimmed efficiently and economically without deteriorating the quality of the film roll.

FIG. 1 is a schematic sectional view showing an embodiment of a trimming apparatus according to the present invention. It is sectional drawing showing the shaft member and shaft drive part of FIG. It is sectional drawing showing a film cutting arm part and a paper tube cutting arm part similarly. It is a side view showing the operating state of a film cutting arm part and a paper tube cutting arm part. It is a top view of the principal part which shows the cutting state of a film roll. It is a top view of the principal part which shows the cutting state of a paper tube. It is a side view of a winding part. It is a top view of a winding part. It is the schematic which shows the conventional trimming apparatus. It is a top view of the principal part which shows the film cutting state of the apparatus of FIG. It is the schematic which shows the conventional slitter apparatus. It is a top view of the principal part which shows the film cutting state of the apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Trimming apparatus 11 Base 12, 13 Guide roll 14 Guide ring 15 Side bar 16 Rail member 17 Position adjustment member 18 Holding plate 19 Holding member 20 Shaft member 25 Rotating gear part 30 Shaft drive part 35 Motor 40 Film cutting arm part 50 Film Cutting blade 60 Paper tube cutting arm portion 70 Paper tube cutting blade 80 Surplus film winding portion 90 Tension adjustment member F Synthetic resin film F2 Surplus film P Paper tube R Film roll

Claims (3)

A device (10) for cutting off an edge (E) of a predetermined width of a film roll (R) in which a synthetic resin film (F) is wound around a paper tube (P),
Machine stand (11),
A shaft member (20) provided with a rotating gear part (25), inserted through the paper tube of the film roll and fixed integrally with the film roll;
A shaft drive unit (31) that includes a gear unit (31) and a motor (35) that detachably holds the shaft member on the machine base and meshes with a rotation gear unit of the shaft member, and rotates the film roll at a predetermined speed. 30),
A film cutting arm portion (40) disposed on the machine base so that the position of the film roll can be adjusted in the axial direction and can be pressed against the circumferential surface of the film roll with a predetermined pressure;
A film cutting blade (50) that is rotatably held by the film cutting arm portion at a predetermined angle so that the cutting surface of the film roll does not contact the side surface of the blade portion;
A paper tube cutting arm portion (60) disposed on the machine base so as to be adjustable in the axial direction of the paper tube and capable of being pressed against the circumferential surface of the paper tube with a predetermined pressure;
A paper tube cutting blade (70) held in the paper tube cutting arm portion so as to be freely rotatable,
Surplus film take-up part (80) for taking up the surplus film (F2) cut by the film cutting blade
And a film roll trimming apparatus.   The film roll trimming device according to claim 1, wherein the film cutting blade is a single blade having a flat blade surface on the cut surface side of the film roll.   The film roll trimming device according to claim 1, wherein the film take-up part has a guide part for surplus film, and a tension adjusting member (90) that moves up and down by the tension of the surplus film is arranged in the guide part. .

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