JPH0840426A - Cutter for skin of rolled object - Google Patents

Abstract

PURPOSE:To provide an apparatus which can cut a skin on an outer peripheral face of a rolled sheet well. CONSTITUTION:A cutting head 12 is held by a carriage 14 moving in parallel with a rolled sheet 1, wherein a slide unit 28 having a spatula 34 for entering the rolled sheet 1 to make a skin 4 float and a rotary blade 40 for cutting the floating skin 4 is movably held on a guide rod 27 in a radial direction to the rolled sheet 1 by the cutting head 12. The cutting head is moved in parallel with an axial line of the rolled sheet 1, and when the spatula 34 is made to enter the rolled sheet 1 to make the skin float for cutting with the rotary blade 40, the spatula 34 moves in a radial direction successfully following unevenness existing on the rolled sheet 1, thereby preventing the rolled sheet 1 from being damaged or a defect in cutting from occurring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting the skin of a roll-shaped material for axially cutting the skin of the roll-shaped material. Here, the roll-shaped material is a roll paper mainly used in a rotary printing machine, but in addition to that, a roll-shaped material made of a material such as plastic, paper, metal, wood, or a composite thereof. May be The skin is a material on the surface layer of a roll-shaped material such as a packaging material or a surface layer main paper, and the packaging material includes various packaging materials such as kraft paper, paperboard, and a plastic sheet.

[0002]

2. Description of the Related Art Generally, a roll paper used in a rotary printing press is transported with its peripheral surface and end surface covered with a packing material such as kraft paper, paperboard and vinyl chloride resin sheet. Then, in order to apply the packed roll paper to the rotary printing machine, first, the packing material on both end surfaces of the roll paper is removed, then the packing material on the peripheral surface part is removed, and then the surface main paper is removed from the roll paper. Roll out, cut the tip into an appropriate shape (for example, V-shape) to form a paper edge, form an adhesive layer on the paper edge, and then rewind the paper edge on roll paper and roll paper surface It is tailored for paper splicing by temporarily fixing it with a loosening prevention tab.

The applicant of the present invention, among these tailoring operations,
A device was developed and patented for an automated process after removing the packing material on the end face (see Japanese Patent Application Laid-Open No. 4-44940). In this apparatus, in order to remove the packing material on the peripheral surface of the roll paper, as shown in FIGS. 10 and 11, the packing material 2 on the peripheral surface of the roll paper 1 and the surface main paper after removing the packing material on the end surface are removed. (1 to several sheets of the main paper on the surface of the roll paper) 1a is displaced in the axial direction of the roll paper 1, and then the wedge-shaped incision tool 3 is pressed against the outer peripheral surface of the end portion of the roll paper 1, and thereafter, as shown in FIG. , The wedge-shaped incision tool 3 is axially moved in a state of being pressed against the outer peripheral surface of the roll paper 1, and the skin 4 including the packing material 2 and the surface layer main paper 1a is incised over the entire width, and then the roll paper 1 is By rotating, the incised skin 4 was removed, and the leading end of the roll paper was fed out.

[0004]

However, in such a conventional apparatus, when the wedge-shaped incision tool 3 is pressed against the outer peripheral surface of the roll paper to move it and the epidermis 4 is incised, the cutting edge of the wedge-shaped incision tool 3 is incised midway. There may be problems such as popping out upward from the inside main surface paper 1a or the packaging material 2 and causing incision failure, or conversely piercing the inside of the inside main surface paper 1a during incision and damaging the inside main paper. There was found. As a result of studying these causes, small irregularities are often formed on the outer peripheral surface of the roll paper, and the wedge-shaped incision device 3 sticks into the irregularities, causing the above-mentioned problem. Since the roll paper 1 has poor dimensional accuracy, the roll paper 1
When the wedge-shaped incising tool 3 is pressed against the outer peripheral surface of the roll paper, the outer peripheral surface of the roll paper often tilts slightly with respect to the bottom surface of the wedge-shaped incision tool 3. Even if the wedge-shaped incision tool 3 is moved along the direction, the wedge-shaped incision tool 3 breaks through the epidermis 4 or pierces the inside of the epidermis 4, resulting in the above problem.

Further, in the above-mentioned conventional technique, the skin 4 to be cut on the peripheral surface of the roll paper 1 is displaced in the axial direction of the roll paper 1 before the incision is made by the wedge-shaped incision tool 3. Wrinkles were formed on the outer peripheral surface, and the wedge-shaped incision tool 3 could pierce the wrinkled portion. In addition, there is a problem that it requires an operation and time for shifting.

The present invention has been made in order to solve the above-mentioned conventional problems, and reliably and securely covers a roll-shaped material such as roll paper from a packaging material on the outer peripheral surface of the packaging material or a surface skin such as surface layer main paper. It is an object of the present invention to provide a device for cutting the skin of a roll-like material that can cut the above without damaging the like.

The present invention also provides a method for cutting the epidermis,
An object of the present invention is to provide an apparatus for cutting a skin of a roll-shaped material, which can be satisfactorily cut without shifting the skin in the axial direction of the roll-shaped material.

[0008]

DISCLOSURE OF THE INVENTION The present invention, which has been made to achieve the above object, is a cutting device for axially cutting a skin of a roll-shaped material set at a predetermined position, which comprises a cutting head, A carriage that holds the cutting head and moves in a direction parallel to the axis of the roll, and the cutting head and the roll so that the cutting head is at a predetermined position in the radial direction with respect to the roll. And a radial direction positioning means for positioning relative to each other, wherein the cutting head is mounted on the frame, a slide unit movably held by the frame in the radial direction of the roll-shaped material, and the slide unit. A spatula for scooping up the epidermis when the epidermis of the roll-shaped material is cut from the end face,
A roll-shaped epidermis cutting device comprising: a rotary blade attached to the slide unit for cutting the epidermis scooped up by the spatula; and a clamp device for fixing the slide unit to the frame. And

[0009]

Since the present invention has the above-mentioned structure, in the state in which the clamp device fixes the slide unit to the frame, the radial positioning device allows the cutting head to face the end face of the roll-shaped object and the radial direction is predetermined. When the carriage is positioned in position, and then the carriage is moved parallel to the axis of the roll, the spatula of the cutting head is inserted inside the epidermis to be cut, which moves while scooping up the epidermis and rotates. The blade cuts through the epidermis. At this time, the clamp device is released when the tip portion of the spatula is inserted into the roll-shaped material, and the slide unit can be moved with respect to the frame. This allows the spatula held by the slide unit to move freely in the radial direction of the roll-shaped object, so that the spatula inserted inside the skin to be cut follows the unevenness of the roll-shaped object. Then, it can be moved in the radial direction, and the epidermis is surely scooped up and sent to the rotary blade for cutting. Thus, the spatula can be reliably separated from the inner paper or the like inside and cut without breaking the outer skin and popping outside or sticking inside. It does not hurt. Also, by inserting a spatula from the end surface of the roll-shaped material inside the epidermis to be cut, the epidermis to be cut can be separated, as was done conventionally.
The work of shifting the epidermis in the axial direction is unnecessary.

Here, when a flat portion having a thickness of 0.5 to 1.2 mm and a length of 3 to 8 mm is formed at the tip of a spatula for scooping up the epidermis, the thin flat portion forms the epidermis. And the inside of the main paper etc. progress well, and the flat part of the surface makes it possible to follow small irregularities on the roll-shaped material well, and the skin and the inside main paper etc. Can be further prevented from being damaged.

If the bottom surface of the spatula for scooping up the skin is formed in a flat shape over a range of 20 to 50 mm from the tip, the spatula can be moved to better follow the irregularities of the roll-shaped material. This makes it possible to further prevent the epidermis and the inner paper inside the epidermis from being damaged.

Further, if the spatula is made of a soft material such as synthetic resin or rubber, it is possible to further prevent the epidermis and the inner paper inside thereof from being damaged when the epidermis is scooped up by the spatula.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention shown in the drawings will be described below. FIG. 1 is a schematic plan view of an apparatus for cutting the skin of a roll according to an embodiment of the present invention, and 10 shows the entire apparatus for cutting the skin. The skin cutting device 10 of this embodiment is provided in a tailoring device (not shown) as disclosed in Japanese Patent Laid-Open No. 4-44940, and the roll paper 1 ( It is used to cut the outer skin 4 made of the packing material 2 on the outer peripheral surface and the surface main paper 1a from the roll-shaped material. A chucking arm 6 holds the roll paper 1 rotatably and can be positioned at a predetermined position suitable for cutting by the skin cutting device 10.

The skin cutting device 10 includes a cutting head 12 for cutting the skin and a carriage 14 that holds the cutting head 12 and moves in a direction parallel to the axis of the roll paper 1 held by the chucking arm 6. I have it. The carriage 14 is movably held by a guide rod 15 provided in parallel with the axis of the roll paper 1 and is connected to a drive chain 16 so that the carriage 14 can reciprocate left and right. Carriage 14 and drive chain 1
A load detecting means 17 such as a load cell for detecting the tension acting on the drive chain 16 at the time of cutting the epidermis is attached to the connecting portion of 6, and a load for moving the carriage 14 due to defective cutting at the time of cutting is applied. When it changes, it can be detected.

The carriage 14 is a slide bearing 19
A pair of guide rods 20 are held movably in the radial direction with respect to the roll paper 1 set at a predetermined position, and the cutting head 12 is attached to the tip of the guide rods 20.
Is attached. The carriage 14 also holds an electric cylinder 22 connected to the cutting head 12.
Thus, by the electric cylinder 22, the cutting head 12
Can be moved in the radial direction with respect to the roll paper 1, and can be stopped at an arbitrary position and held at that position. The electric cylinder 22 and the guide rod 2
0, the slide bearing 19 and the like constitute a head moving device which is provided in the carriage and moves the cutting head in the radial direction with respect to the roll-shaped object. Cutting head 12
Is provided with a roll paper position detection sensor 24 that detects the position of the outer peripheral surface of the roll paper by contacting the outer peripheral surface of the roll paper 1 as a detection unit that detects the position of the cutting head 12 in the radial direction with respect to the outer peripheral surface of the roll paper. Has been. Thus, by controlling the electric cylinder 22 based on the signal from the roll paper position detection sensor 24, the cutting head 12 can be positioned at a predetermined radial position with respect to the roll paper 1. That is, the head moving device and the detection unit position the cutting head and the roll-like object in the radial direction so that the cutting head is located at a predetermined position in the radial direction with respect to the roll-like object. Constitutes a means. The radial positioning means does not necessarily have to move the cutting head 12 side in the radial direction of the roll paper 1.
The positioning may be performed by moving the. However, it is easier to perform positioning by moving the cutting head 12 as in the illustrated embodiment, and the roll paper 1 is positioned at a desired position for the process after cutting the skin. It is preferable because it can be stored.

The cutting head 12 includes a frame 26 fixed to the guide rod 20 as shown in FIGS.
The guide rod 2 mounted on the frame 26 parallel to the guide rod 20 and thus in the radial direction of the roll paper 1
7 and a slide unit 28 movably held by the guide rod 27. Slide unit 2
8 is a slide block 31 movably held by a guide rod 27 via a slide bearing 29, a spatula attachment 33 rotatably attached to the slide block 31 by a pin 32, and fixed to one end thereof. It has a spatula 34. The spatula 34 is inserted under the skin 4 (the packaging material 2 and the surface main paper 1a) to be cut from the end surface of the roll paper 1 when the cutting head 12 is moved in parallel to the roll paper 1 in the axial direction. , Its epidermis 4
Is for scooping up, so that the front end faces the end face of the roll paper 1 and is parallel to the axis of the roll paper 1.
It is arranged. The pin 32 described above is provided to adjust the approach angle of the spatula 34 with respect to the roll paper 1. Further, a vertical wall 33a is provided at the center of the upper end of the back surface of the spatula attachment 33, and adjustment bolts 36 attached to the slide block 31 are pressed against both sides of the vertical wall 33a. With this adjusting bolt 36, the spatula attachment 33 is rotated by a minute angle about the pin 32, and the spatula 3 is rotated.
4 can be adjusted to be exactly parallel to the axis of the roll paper 1.

The spatula 34 has a shape shown in FIGS. 7 to 9, has a thin flat portion 34a at its tip, and an inclined guide surface 34b for picking up the epidermis behind it.
It has a flat bottom surface 34c. The flat portion 34a is
When the spatula 34 travels through the roll paper, the spatula 34 is provided so as to be able to follow the irregularities on the roll paper, and usually has a thickness of 0.5 to 1.2 mm and a long length. Saga 3
-8 mm is selected. The tip of the flat portion 34a is chamfered so as not to damage the roll paper. The flat bottom surface 34c is also provided so that the spatula 34 can move stably while following the unevenness of the roll paper as it advances through the roll paper.
Made to ~ 50mm length. If this length is too short, the followability to the irregularities of the roll paper deteriorates, and if it becomes long, the frictional resistance to the roll paper increases, which is not preferable,
The above range is preferred. A groove 34d into which a rotary blade described later is inserted is formed at the center of the guide surface 34b. Spatula 34
Is usually made of a synthetic resin such as nylon or a soft material such as rubber, but a metal may be used depending on the case.
However, it is preferable to use a soft material, since it has appropriate elasticity and therefore moves smoothly following irregularities of the roll paper and hardly damages the roll paper. Also,
A synthetic resin such as nylon has a small frictional resistance against roll paper, and is preferable also from this point.

1 to 6, the slide block 3
1 holds a guide rod 37 parallel to the guide rod 27, and the guide rod 37 has a gearbox 3
8 is movably held. Further, the slide block 31 holds a micrometer head 39 connected to the gear box 38, and the micro meter head 39 can fix the gear box 38 to the slide block 31 and finely adjust its position. I am trying. Therefore, normally, the gear box 38 is movable integrally with the slide block 31 along the guide rod 27 and constitutes a part of the slide unit 28. The output shaft of this gear box 38 has a spatula 34
The rotary blade 40 is attached so as to be positioned in the groove 34d (see FIG. 5) formed in the frame 26, and is held by the frame 26 via the joint 41 whose axial distance can be changed. The drive motor 42 is connected. Thus, even when the slide block 31 and the gear box 38 are integrally moved along the guide rod 27, the rotary blade 40 can be rotationally driven by the drive motor 42 without any trouble, and at the time of the movement. The gap between the spatula 34 attached to the slide block 31 and the rotary blade 40 attached to the gear box 38 is always kept constant. The gap between the spatula 34 and the rotary blade 40 is an important factor in the sharpness when the epidermis is cut, but in the present embodiment, the gap can be finely adjusted by the micrometer head 39, and the sharpness of the condition can be set. It can be performed.

A clamp pin 45 is attached to the slide block 31 in a direction perpendicular to a guide rod 37 that holds the slide block 31 so that the slide block 31 can move.
A clamp device 47 having a pair of clamp claws 47a and 47b for clamping 5 is attached. The clamp device 47 has a configuration capable of clamping the clamp pin 45 by opening and closing the pair of clamp claws 47a and 47b in a direction parallel to the guide rod 37 and symmetrically, and the pair of clamp claws 47a and 47b. The slide unit 28 is movable along the guide rod 27 by opening the.
By closing 7b, the slide unit 28 can be fixed at a fixed position in the direction along the guide rod 27.

Next, the operation of the epidermis cutting device 10 having the above construction will be described. The following operation is automatically performed by a sequencer (not shown). In FIG. 1, when the roll paper 1 from which the packing materials at both ends are removed is sent, the chucking arm 6 holds the roll paper 1 and ascends to a predetermined position for the cutting operation by the skin cutting device 10. Set to the position. At this time, the epidermal cutting device 10
The cutting head 12 is standing by in the vicinity of the end surface of the roll paper 1 and at a position slightly apart from the outer circumference thereof. Further, the clamp device 47 clamps the clamp pin 45, so that the slide unit 28 and the spatula 34 are fixed at fixed positions with respect to the frame 26.

Next, the electric cylinder 22 operates to move the cutting head 12 forward in the direction of the roll paper 1. When the cutting head 12 advances, the roll paper position detection sensor 24 provided in the cutting head 12 hits the outer peripheral surface of the roll paper 1 and detects the radial position of the outer peripheral surface of the roll paper 1. Roll paper position detection sensor 24 used here
Is a displacement sensor, and when the cutting head 12 goes too far, it is possible to know how far it has gone too far.

The cutting depth (thickness of the packaging material 2 to be cut and removed as the skin 4 and the thickness of the surface main sheet 1a) is input to the sequencer in advance, and the sequencer is electrically operated based on a signal from the roll paper position detection sensor 24. The cylinder 22 is controlled to position the cutting head 12 so that the tip of the spatula 34 is at a desired radial position with respect to the roll paper 1.

Thereafter, the drive chain 16 is indicated by the arrow X in FIG.
The carriage 14 is moved in the direction X, and the carriage 14 is moved in the arrow X direction. By this movement, the cutting head 12 also moves toward the end face of the roll paper 1, the tip of the spatula 34 bites into the inside of the skin 4 to be cut on the end face of the roll paper 1, scooping up the skin 4, and the rotary blade. 40 cuts the epidermis. When the spatula 34 bites into the roll paper 1 by an appropriate length, for example, a length corresponding to the flat bottom surface 34c, the clamp device 47 is released, and the spatula 34 and the rotation are rotated as shown in FIG. The slide unit 28 holding the blade 40 becomes movable along the guide rod 27, and in this state, the cutting head 12 moves along the roll paper 1,
Cut the epidermis 4 open. Here, the surface portion of the roll paper 1 has irregularities of about 1 mm, but since the spatula 34 traveling in the roll paper 1 is movable in the radial direction of the roll paper 1, the irregularities of the roll paper 1 Can be satisfactorily followed, and the skin 4 can be scooped up well and sent to the rotary blade to be cut. Further, since the spatula 34 has a flat portion 34a that is easily bent at the tip, the flat portion can be bent to follow the unevenness of the roll paper 1 well, and the flat bottom surface 34c of the spatula 34 can be By stably contacting the roll paper inside the skin, the irregularities of the roll paper 1 can be satisfactorily followed, and in the end, the tip of the spatula 34 hardly pierces and damages the skin 4 or the roll paper inside thereof.

In this way, even if the roll paper 1 has irregularities, the spatula 34 satisfactorily advances between the skin 4 to be incised of the roll paper 1 and the roll paper below it, and only the skin 4 is scooped up. , Cut with the rotary blade 40. At this time, if the cutting fails, the resistance of the carriage 14 at the time of movement increases. Therefore, the load detecting means 17 detects the increase of the resistance, returns the carriage 14 to the original position, and removes the spatula 34. The roll paper 1 is pulled out, and the cutting operation is repeated again.

After the cutting head 12 moves over the entire width of the roll paper 1 and cuts the outer skin 4 over the entire width, the clamp device 47 operates to fix the slide unit 28 at a fixed position with respect to the frame 26, The electric cylinder 22 returns the cutting head 12 to the outside in the radial direction of the roll paper 1, and the carriage 14 returns to the original standby position (position shown in FIG. 1) to prepare for the next operation. On the other hand, the tailoring operation is performed on the roll paper 1 after the outer skin 4 is cut, similarly to the device disclosed in Japanese Patent Laid-Open No. 4-44940.

In the above embodiment, the case where the skin cutting device of the present invention is incorporated into the roll paper tailor is explained as an example, but the present invention is not limited to this case, and it can be used as a device for only cutting the skin. Good. Furthermore, in the above embodiment, the skin to be cut includes the packing material 2 and the surface main paper 1a, but the present invention is not limited to this, and only the packing material may be the skin, or the roll after removing the packing material. In the paper, only the surface layer main paper may be used as the surface skin. Further, the object of the epidermis cutting in the present invention is not limited to the roll paper, and may be another roll-shaped material.

[0027]

As is apparent from the above description, according to the skin cutting device of the present invention, the cutting head is positioned at a predetermined radial position at a position facing the end face of a roll-shaped material such as roll paper. , By moving the cutting head parallel to the axis of the roll, the spatula can be inserted under the epidermis to be cut, the spatula can be scooped up, and the rotary blade can be used for cutting. At that time, by making the slide unit holding the spatula and the rotary blade movable in the radial direction of the roll-shaped object, the spatula can move following the irregularities of the roll-shaped object, and the epidermis can be picked up and cut reliably. In addition, it does not damage the main paper etc. inside it, and it does not require the work of shifting the epidermis in the axial direction as is done conventionally, which has various effects such as simplifying the process. To have.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a skin-cutting device for rolled material according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of a cutting head in the above embodiment.

3 is a schematic cross-sectional view of the cutting head shown in FIG. 2 as seen in the direction of arrow AA.

4 is a schematic cross-sectional view of the cutting head shown in FIG. 2 as seen in the direction of arrow BB.

5 is a schematic side view of a part of the cutting head shown in FIG. 2 viewed from the side of the clamping device.

FIG. 6 is a schematic plan view showing a part of the cutting head of the above-described embodiment in a state in which the epidermis is being cut.

FIG. 7 is a schematic top view of a spatula used in the above embodiment.

FIG. 8 is a schematic side view of the spatula.

FIG. 9 is a schematic front view of the spatula.

FIG. 10 is a schematic perspective view showing a state before the roll paper packing material and the surface main paper are cut by a conventional method.

11 is a schematic cross-sectional view showing the same state as in FIG.

FIG. 12 is a schematic perspective view showing a state in which a packaging material for roll paper and a surface layer main paper are cut by a conventional method.

[Explanation of symbols]

 1 Roll Paper 1a Surface Layer Paper 2 Packing Material 4 Skin 6 Chucking Arm 10 Skin Cutting Device 12 Cutting Head 14 Carriage 16 Drive Chain 20 Guide Rod 22 Electric Cylinder 26 Frame 27 Guide Rod 28 Slide Unit 31 Slide Block 33 Spatula Fixture 34 Spatula 40 Rotating Blade 42 Drive Motor 45 Clamping Pin 47 Clamping Device 47a, 47b Clamping Claw

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideki Nakamura 1-1-1 Ichigayakagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (72) Inventor Isao Matsumoto 1-chome Ichigayaka, Shinjuku-ku, Tokyo No. 1 Dai Nippon Printing Co., Ltd. (72) Inventor Noriyuki Yuguchi 1-1-1 Ichigaya Kaga-cho, Shinjuku-ku, Tokyo No. 1-1 Dai Nippon Printing Co., Ltd. (72) Inventor Takehiko Ichise Ichigaya-Kagacho, Shinjuku-ku, Tokyo Chome 1-1 No. 1 Dai Nippon Printing Co., Ltd.

Claims (5)

[Claims] 1. A cutting device for axially cutting a skin of a roll-shaped material set at a predetermined position, the cutting head and a direction parallel to the axis of the roll-shaped material holding the cutting head. A carriage that moves to a position, and a radial positioning means that relatively positions the cutting head and the roll so that the cutting head is at a predetermined position in the radial direction with respect to the roll. A cutting head, a frame, a slide unit movably held in the frame in the radial direction of the roll, and a slide unit attached to the slide unit, when cutting the epidermis of the roll from the end surface, A spatula to scoop up the epidermis,
A skin-cutting device for a roll-like object, comprising: a rotary blade attached to the slide unit, which cuts the skin picked up by the spatula, and a clamp device which fixes the slide unit to the frame. 2. A spatula for scooping the epidermis at the tip,
The skin-cutting device for a roll-shaped material according to claim 1, wherein the device has a flat portion having a thickness of 0.5 to 1.2 mm and a length of 3 to 8 mm. 3. The bottom surface of the spatula for picking up the epidermis,
The skin-cutting device for a roll-like material according to claim 1 or 2, wherein the device has a flat shape over a range of 20 to 50 mm from the tip. 4. The skin-cutting device for a roll-shaped material according to claim 1, wherein the spatula for picking up the skin is made of a soft material. 5. A head moving device provided in the carriage for moving the cutting head in a radial direction with respect to a roll-like object, and a radius of the cutting head with respect to an outer peripheral surface of the roll-like object. The skin-cutting device for a roll-shaped material according to any one of claims 1 to 4, further comprising detection means for detecting a position in the direction.