JPH08281594A - Sheet body cutting-off device - Google Patents

Abstract

PURPOSE: To prevent creases from being generated on the cut end part of a sheet body wound on a paper tube by setting the peripheral velocity of a cutter means to be higher than the peripheral velocity of the surface of the paper tube. CONSTITUTION: At the same time when a sheet body S is begun to be wound on a paper tube 1 by anticlockwise rotation of the paper tube 1 around a paper tube mounting shaft 105, a sheet body S is cut off with a cutter blade 47 by continuance of clockwise rotational movement around a lower shaft 42c of a supporting arm 43a. Next, the peripheral velocity of the cutter blade 47 is set to be higher than the peripheral velocity of the surface of the sheet body S due to the paper tube 1 by the speed increasing action of a speed increasing mechanism 42. Hereby, the sheet body S on the extreme end side apart from the part stuck to the paper tube 1 is pressed against the surface of the paper tube 1 with a brush 48a provided on the extreme end of the supporting arm 43a by turning of the supporting arm 43a around the lower shaft 42c. Hence, the whole face of the extreme end part of the sheet body S is stuck to the surface of the paper tube 1, and hence crease are not generated on the sheet body S.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a gravure rotary printing machine,
The present invention relates to a sheet cutting device applied to a winding device such as a laminator for producing a laminated web, a coating machine for coating a color ribbon or a magnetic tape.

[0002]

2. Description of the Related Art Conventionally, as a cutting device as described above, for example, Japanese Utility Model Publication No. 6-45352 discloses a sheet body cutting device as shown in FIG. This sheet body cutting device 200 is provided in the vicinity of a sheet body winding device (not shown) that winds a long sheet S, and a predetermined amount of the paper tube 1 is rotated around its own axis of the winding device. When the sheet S is wound up, it is automatically cut so that it can be newly wound up by the winding device.

The cutting device 200 comprises a cutter support arm 202 rotatably supported about a horizontal shaft 201, and a cylinder 204 for rotating the cutter support arm 202 about the horizontal shaft 201.

A cutter blade 203 is attached to the tip of the cutter support arm 202. Then, during the winding operation of the sheet body S, the arm 202 is in a standby posture in which the cylinder 204 is actuated so that the arm 202 is slanted upward to the left as shown by the solid line in FIG. When S is cut, it is rotated counterclockwise about the horizontal axis 201 to be in the cutting posture indicated by the chain double-dashed line. At this time, the sheet S is cut by the cutter blade 203, and then both arms 202 return to their original standby postures. Since the surface of the paper tube 1 is coated with the adhesive, the upstream side sheet body S cut by the cutter blade 203 adheres to the paper tube 1 and rotates counterclockwise around its own axis. Is wound around the paper tube 1 by the rotation of.

[0005]

The cutting operation of the sheet S by the cutting device 200 will be described in detail below.
First, the support arm 202 is rotated counterclockwise around the horizontal shaft 201 by driving the cylinder 204 from the state of the standby position shown by the solid line in FIG. 6, and as a result, as shown in FIG. The blade 203 is brought into contact with the sheet body S, and the sheet body S is brought into contact with and adhered to the surface of the paper tube 1 by being pressed by the cutter blade 203.

Thereafter, as shown in FIG. 7B, the sheet body S is cut in the width direction by the cutter blade 203, and the cut upstream side sheet body S is wound around the rotating paper tube 1. To be

By the way, the paper tube 1 usually rotates so as to wind up a sheet body S of about 100 m in one minute, while the peripheral speed of the cutter blade 203 is slower than that. At the leading end of the sheet body S, the sheet body S existing between the portion that has already adhered to the paper tube 1 and the tip portion that abuts on the cutting edge of the cutter blade 203 is
It becomes a loose state due to the rotation of.

Due to this drip, the sheet body S is wound around the paper tube 1 with wrinkles at its leading end, as shown in FIG. As shown in FIG. 7C, the formed roll R is formed with a bulging portion R1 due to the wrinkles, which causes the appearance to be unsatisfactory and the sheet body S pulled out from the roll R. A fold is formed due to the bulging portion R1, and the rolled-up sheet body S from the paper tube 1 of the roll R to a portion where the fold is removed becomes a defective product, thereby lowering the product yield. However, there is a problem that the commercial value is lowered. In particular, when the bulging portion R1 extends to the outer surface of the roll R, handling inconvenience occurs such that the roll R after winding does not normally roll.

In order to eliminate such an inconvenience, the cylinder 2 is designed to increase the rotational speed of the cutter support arm 202.
Although it is conceivable to improve the capacity of 04, in order to do so, it is necessary to take measures such as making the cylinder 204 a sturdy structure and making the fluid pressure supplied to it larger than before, and therefore the equipment cost. A new problem arises that the volume increases.

The present invention has been made to solve the above-mentioned problems, and wrinkles do not occur at the cut end of the sheet body wound around the paper tube, and as a result, the bulging portion is not formed. An object of the present invention is to provide a sheet body cutting device that can obtain a cylindrical roll that is not formed.

[0011]

A sheet body cutting apparatus according to claim 1 of the present invention is configured to wind a sheet body around a paper tube at a winding position, and when a roll having a predetermined winding amount is formed, A sheet body winding device configured to move the roll to the unloading position and to move a new paper tube to the winding position is provided, and the sheet body stretched on the upstream side of the roll at the unloading position is provided. In a sheet body cutting device that cuts in the width direction and adheres the cut end to the surface of the paper tube on the winding position side that rotates around its own axis, the sheet body cutting device is arranged outside both sides of the stretched sheet body. A pair of support bodies, a cutter means provided between the pair of support bodies and rotatable about a main axis, and a drive means for a cutter means for rotating the cutter means about the main axis are provided, and the cutter means is the above-mentioned. Cut the sheet body The cutter blade and the pressing means for pressing the end of the cut sheet body against the surface of the paper tube are provided, and the cutter blade and the pressing means are positioned so as to face the surface of the paper tube. The drive means is configured so as to rotate the cutter means between a standby position in which the cutter blade does not cut the sheet body and a cutting position in which the cutter blade cuts the sheet body. The speed is set to be higher than the peripheral speed of the surface of the tube.

A sheet body cutting device according to a second aspect of the present invention is the sheet body cutting device according to the first aspect, wherein the support is rotatably supported on a base end side about a base end axis, and is supported. A supporting body drive means for rotating the support body is provided between a standby posture in which the body is separated from the sheet body and a close posture in which the support body is in close proximity to the sheet body. In this state, it is provided so as to traverse the sheet body on the upstream side of the roll moved to the removal position.

A sheet body cutting device according to a third aspect of the present invention is the sheet body cutting device according to the second aspect, wherein a support arm is provided rotatably around the base end axis, and a tip end side of the support arm is provided. A pressing roller that is rotatable around the support shaft is provided.The pressing roller is configured so as to be capable of contacting the paper tube in parallel with the sheet body, and the pressing roller has a standby posture in which the pressing roller is separated from the sheet body. It is characterized in that a supporting arm drive means for rotating the supporting arm around the base end axis is provided between the supporting arm and the sheet pressing posture in which the supporting arm contacts the paper tube via the sheet body.

A sheet body cutting apparatus according to a fourth aspect of the present invention is the sheet body cutting apparatus according to any one of the first to third aspects, in which the cutter means is provided between the cutter means driving means and the main shaft. It is characterized in that a speed increasing mechanism for increasing the driving speed of the driving means for driving is provided.

A sheet body cutting device according to a fifth aspect of the present invention is the sheet body cutting device according to the fourth aspect, wherein the speed increasing mechanism is formed by a plurality of gears meshing with each other. It is a thing.

The sheet body cutting device according to claim 6 of the present invention is the sheet body cutting device according to any one of claims 1 to 5, wherein the pressing means is formed of a brush or a flexible material. It is characterized by being formed of a tubular body.

A sheet body cutting device according to a seventh aspect of the present invention is the sheet body cutting device according to any one of the first to fifth aspects, wherein the pressing means cuts the sheet body by an air flow blown from a nozzle. It is characterized in that it is configured to press against the paper tube.

[0018]

According to the sheet body cutting apparatus of the first aspect, when a roll having a predetermined winding amount is formed on the paper tube at the winding position, the roll is moved to the roll removing position, A new paper tube is supplied to the winding position. Then, with the new paper tube being supplied, the sheet body is stretched in the front-rear direction along the support body in the standby posture. In this state, the cutter blade driving means is driven to shift the cutter means from the standby posture to the cutting posture, whereby the cutter means is rotated around the main shaft, whereby the cutter blade is stretched close to the surface of the paper tube. The installed sheet body is cut in the width direction, and the pressing means presses the cutting end against the surface of the rotating paper core, so that the cut sheet body adheres to the paper core and is wound up. Become.

Since the peripheral speed of the cutter means is set to be higher than the peripheral speed of the surface of the paper tube, the moving amount of the cutter blade after cutting the sheet is the rotation of the paper tube. Is always larger than the movement of the cutting edge due to
As a result, the cutting edge is not interfered with by the cutter blade, and wrinkles are prevented from wrinkling at the cutting edge portion not sticking between the cutter blade and the paper tube. Is adhered in a state of being in full surface contact with the surface of.

According to the sheet body cutting device of the second aspect, the drive device for the support is driven to rotate the support about the base end axis in a state where the sheet is stretched, With the close position, the cutter means faces the paper tube via the sheet body. In this state, by shifting the cutter means in the standby posture to the cutting posture, the sheet body is cut and the winding on the paper tube is started. And
After the winding of the sheet onto the paper core is started, the support drive device is driven to return the support to the standby position, and a storage space for securing the roll is secured between the support and the paper core. To be done.

According to the sheet cutting device of the third aspect, the support arm is driven around the base axis by driving the support arm driving means in a state where the support body is set in the close attitude. , If you put it in the seat holding position,
The pressing roller is brought into contact with the paper tube via the sheet body, whereby the sheet body to be cut is stable and in a state where it is easily cut.

According to the sheet cutting apparatus of the fourth aspect, the driving speed of the cutter means driving means is increased by the speed increasing mechanism.

According to the sheet body cutting device of the fifth aspect, since the speed increasing mechanism is formed by a plurality of gears meshing with each other, it is easy to set the gear ratio of each gear appropriately. In addition, the drive speed of the cutter means drive means is increased.

According to the sheet body cutting device of the sixth aspect, after the sheet body is cut, the cut end is pressed against the surface of the paper tube by the brush or the tubular body.

According to the sheet body cutting device of the seventh aspect, after the sheet body is cut, the cut end is pressed against the surface of the paper tube by the air flow blown from the nozzle.

[0026]

FIG. 1 is a partial cross-sectional side view showing an example of a winding device to which a sheet cutting device according to the present invention is applied. As shown in this figure, a sheet body winding device 100 that alternately winds the sheet body S around a pair of paper tube mounting shafts 105 via the paper tube 1 is provided on the floor F. The cutting device 2 according to the present invention is provided between a pair of left and right support columns P (FIG. 2) which are provided upright in the vicinity. In addition, in FIG. 1, regarding the cutting device 2, a solid line indicates a cutting posture that extends in the horizontal direction, and a two-dot chain line indicates a standby posture in which the tip jumps up.

The winding device 100 is provided with a base 101 erected on the floor F, a winding arm 104 provided on the top of the base 101, and both sides of the winding arm 104. And a pair of left and right paper tube mounting shafts 105 extending in the horizontal direction, a support arm 106 fixed to the winding arm 104 so as to cross, and the support arm 106.
And support rollers 107 that are rotatably supported around a horizontal axis.

The winding arm 104 has a horizontal shaft 10 of a bearing 102 whose central portion is provided on the top of the base 101.
3 is supported in a horizontal posture in a horizontal posture, and is intermittently rotated about the bearing 102 in the counterclockwise direction by 180 ° by the driving of an arm driving means (not shown). The position of the paper tube mounting shaft 105 on the right side of the winding arm 104 in the horizontal posture is the winding position X of the sheet body S, and the position on the left side thereof is the removal position Y for removing the roll R of the wound sheet body S. Is set as.

Between the pair of support columns P, a first horizontal axis P1 is provided on the right side, and a second horizontal axis P2 is provided on the upper left side of the first horizontal axis P1. The position of the second horizontal axis P2 is
The height of the take-up arm 104 in the horizontal posture is set to substantially the same level as the paper tube mounting shaft 105. These horizontal axes P
A first roller P3 and a second roller P4 are rotatably supported by 1 and P2. The sheet body S descended from above the support column P is guided by the lower part of the first roller P3 and the upper part of the second horizontal axis P2 and fitted into the paper tube mounting shaft 105 at the winding position X. It is designed to be wound around.

The sheet body S on the paper tube 1 at the winding position X
When the roll R having a predetermined winding amount is formed, the winding arm 104 rotates 180 degrees counterclockwise around the horizontal axis 103.
The roll R reaches the unloading position Y after rotating. When the roll R reaches the unloading position Y, the paper tube mounting shaft 105, which has newly reached the winding position X, is rotationally driven by the drive of a drive means (not shown).

When the roll R arrives at the removal position Y, the sheet body S, as shown by the chain double-dashed line in FIG. It is in a state of being stretched between the two rollers P4. In such a stretched state, the sheet body S is cut in the width direction by the operation of the cutting device 2, and the downstream end of the separated upstream side sheet body S is newly positioned at the winding position X and rotated. It is supplied to the existing paper tube 1 and a new sheet body S is wound up. The roll R positioned at the removal position Y is removed together with the paper tube 1 from the paper tube mounting shaft 105 after the sheet body S is cut, and the new paper tube 1 is replaced with the paper tube mounting shaft 105.
Be attached to.

The cutting device 2 of the present invention cuts the sheet body S stretched between the support roller 107 and the second roller P4 in the width direction, and cuts the right end of the sheet body S. Paper core mounting shaft 10 rotating at the winding position X
5 for supplying to the surface. Hereinafter, the cutting device 2 of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a perspective view showing an example of the cutting device of the present invention. As shown in this figure, the cutting device 2 includes a cutting mechanism holder 3, a cutting mechanism 4 attached to the cutting mechanism holder 3, and a sheet body pressing mechanism 5 that facilitates cutting of the sheet S. , A first drive means (support means drive means) 6 for driving the cutting mechanism 4, and the sheet body pressing mechanism 5
And a second drive means (support arm drive means) 7 for driving the. The cutting mechanism holder 3
Is formed between a pair of support columns P, and is switched between a close posture in which the leading end portion is close to the portion to be cut of the sheet body S by the drive of the first driving means 6 and a standby posture in which the tip portion jumps diagonally upward to the left. Is possible.

The cutting mechanism 4 is provided at the tip of the cutting mechanism holder 3 and is located downstream of the sheet body S that is pressed onto the paper tube 1 of the paper tube mounting shaft 105 by the sheet body pressing mechanism 5. The part to be cut is cut in the width direction.

In the present embodiment, the cutting mechanism holder 3 is provided with a pair of left and right frame plates (supports) 31 provided between a pair of support columns P. This frame plate 31 is in a state of sliding contact with a base end shaft 32 supported by a support hole 32a formed on the base end side (right side) above the second roller P4 of the pair of support pillars P. It is externally fitted and is rotatable around the base end shaft 32 independently of the rotation of the base end shaft 32 around its own axis.

The lower end of the first driving means 6 is a support pillar P.
It is composed of a pair of left and right cylinders 61 that are operated by fluid pressure attached to the cylinder 61, and a cylinder rod 62 that projects from the top of these cylinders 61. The upper end of the cylinder rod 62 is connected to the frame plate 31 via the connecting shaft 35. It is connected. Then, by moving the cylinder rod 62 up and down, the frame plate 31 rotates forward and backward around the base end shaft 32,
As a result, it is possible to switch between the waiting posture that has jumped up and the close posture that is close to the paper tube 1. The bottom of the cylinder 61 is rotatably supported around a support shaft 64 of a bracket 63 provided on the side of the support column P, so that the cylinder 61 can tilt when the cylinder rod 62 appears and retracts. Has become.

The sheet pressing mechanism 5 is composed of a pair of left and right supporting arms 51 and a pressing roller 53 supported by the pair of supporting arms 51. The support arm 51 has a base end side fitted between the frame plates 31 of the base end shaft 32 so as to be rotatable about the base end shaft 32. A support shaft 52 is provided between the pair of support arms 51, and the pressing roller 53 is rotatably supported around the support shaft 52. The press roller 53 is provided corresponding to the paper tube mounting shaft 105, and the lower surface of the press roller 53 and the paper tube mounting shaft 105 are rotated by rotating the support arm 51 counterclockwise around the base end shaft 32. Is positioned so that the upper surface of the and the upper surface contact each other in the width direction.

In the present embodiment, the second drive means 7 is a cylinder 71 operated by air pressure, and a cylinder rod 7 protruding downward from the lower end of the cylinder 71.
2 and. The lower end of the cylinder rod 72 is connected to the base shaft 3 via a connecting shaft 72a extending in the horizontal direction.
2, the base end shaft 32 rotates forward and backward about its own axis by the vertical movement of the cylinder rod 72, whereby the support arm 51 rotates together about the base end shaft 32. It may be in a standby position that jumps up,
The pressing roller 53 can be brought into an abutting position (sheet pressing position) in which the pressing roller 53 is in contact with the paper tube 1.

The cutting mechanism 4 includes a pair of third drive means (drive means for cutter means) 41 provided on the pair of left and right frame plates 31, and a pair of speed increasing mechanisms operated by the respective third drive means 41. 42 and cutter means 43 connected to the pair of speed increasing mechanisms 42.

In this embodiment, the third driving means 4 is used.
1 is a third cylinder 41 provided on the outer side of the frame plate 31.
a and a cylinder rod 41b protruding forward from the third cylinder 41a. The third cylinder 41a is rotatably supported on the outer surface of the frame plate 31 on the base end side so as to be rotatable around the support shaft 34.

Further, the speed increasing mechanism 42 includes a single gear 44 attached to the outer surface of the frame plate 31 on the front end side, and the single gear 44.
The intermediate gear 45 meshes with the intermediate gear 45 and the lower gear 46 meshes with the intermediate gear 45. The single gear 44 is rotatably supported around an upper shaft 42a provided on the frame plate 31, the intermediate gear 45 is rotatably supported around the intermediate shaft 42b, and the lower gear 46 is a frame. Board 31
Is rotatably supported around a lower shaft (main shaft) 42c that is provided so as to penetrate therethrough. An auxiliary roller 42d is provided on the intermediate shaft 42b so as to be rotatable about its axis.

The one-sided gear 44 has an arcuate arc-shaped gear 44a having a tooth surface on the lower portion thereof, and a lever portion 44b is projectingly provided on an upper portion of the arc-shaped gear 44a. The intermediate gear 45 has a second gear 45b having a diameter slightly larger than that of the first gear 45a, which is integrally laminated on the first gear 45a.
Meshes with the arc gear 44a and the second gear 45b meshes with the lower gear 46.

Further, the upper portion of the lever portion 44b of the single gear 44 and the tip portion of the cylinder rod 41b are connected to each other by the connecting shaft 41.
They are connected to each other by c, and the one-side gear 44 is rotated around the upper shaft 42a when the cylinder rod 41b is projected and retracted. Therefore, when the third drive means 41 is driven to cause the cylinder rod 41b to project, the linear motion due to this projection is converted into rotational motion, and the circular arc gear 44 is sequentially moved.
It is transmitted to the lower gear 46 via a, the first gear 45a, and the second gear 45b, and the lower gear 46 rotates counterclockwise around the lower shaft 42c. When the cylinder rod 41b is retracted, the lower gear 46 rotates around the lower shaft 42c in the clockwise direction.

The effective length of the lever portion 44b (the distance between the axis of the coupling shaft 41c and the axis of the upper shaft 42a).
Is smaller than the effective diameter of the arc gear 44a (the radius of the pitch circle of the arc gear 44a), and the effective diameter of the first gear 45a meshing with the arc gear 44a is larger than the effective diameter of the second gear 45b. Smaller, lower gear 46
Has an effective diameter smaller than that of the second gear 45b.

The effective diameter of each gear, the effective length of the lever portion 44b, and the radius around the shaft center of the lower shaft 42c of the cutter blade 47 are set in consideration of the retracting speed of the cylinder rod 41b. The size is set so that the peripheral speed of the cutter blade 47 is faster than the peripheral speed of.

The cutter means 43 comprises a pair of left and right support arms 43a provided on the inner side surfaces of the pair of frame plates 31, and a holder having a rectangular parallelepiped shape fixed to the tips of the support arms 43a and extending in the width direction. 43b, a cutter blade 47 fixed to the holder 43b, and a brush member (pressing means) 48.

Each of the support arms 43a has an auxiliary roller 42d.
Are fixed to the lower shafts 42c of the pair of left and right lower gears 46, and rotate together with the lower shafts 42c about their axes. In addition, the holder 4
As shown in FIG. 3, 3b is fixed in a state of being inserted over the end portions of the pair of support arms 43a, and extends over the entire length of the holder 43b via a rubber cushion plate 43c on the tip end surface of this holder 43b. A long cutter blade 47 and a brush member 48 are fixed by screws. The cutter blade 47 may be directly attached to the holder 43b without providing the buffer plate 43c.

A zigzag saw blade 47a is formed on the cutting edge of the cutter blade 47, and the sheet S cut by this has a sawtooth-shaped cutting portion as shown in FIG. Further, on the end surface extending in the width direction of the brush member 48, the brushes 48 are arranged in two rows so as to be orthogonal to the extending direction of the cutter blade 47.
a is planted.

The dimensions of the support arm 43a, the brush member 48, and the brush 48a are arranged such that the tips of the brush 48a centering on the axis of the lower shaft 42c are on the surface of the paper tube 1 at the winding position X. Settings have been made. Further, the cutter blade 47 is rotated clockwise around the lower shaft 42c of the cutter means 43 so as to cut the sheet body S stretched between the upper support roller 107 and the paper tube 1. It is dimensioned.

The operation of the present invention will be described below. First, as shown in FIG. 1, immediately after the roll R is moved from the winding position X to the unloading position Y, the frame plate 31 and the support arm 51 move upward around the base end shaft 32 as shown by the chain double-dashed line. A state in which the sheet body S is in a flipped-up state and a sheet body S indicated by a chain double-dashed line is stretched between the upper support roller 107 and the second roller P4 below the frame plate 31 and the support arm 51. It has become. In this state, the first driving means 6 and the second driving means 7 are driven so that the frame plate 31 is brought into the proximity posture shown by the solid line in the vicinity of the sheet body S, and the pressing roller 53 moves the sheet body S in the direction of the paper tube 1. The seat presser posture shown by the pressed solid line is obtained. In this state, the cutting operation of the sheet S by the cutting device 2 is started.

Hereinafter, description will be given with reference to FIG. 4 which is an enlarged view of the state where the frame plate 31 is in the close attitude. 4A shows a state immediately after the pressing roller 53 comes into contact with the sheet body S, and FIG. 4B shows a state in which the sheet body S is sandwiched between the pressing roller 53 and the paper tube 1. (C) shows the state immediately after the sheet body S is cut by the cutter means 43.

First, in the state shown in (a), the blade edge of the cutter blade 47 is in a state immediately before contacting the sheet body S. Then, from the state shown in (a), the sheet body S is sandwiched between the pressing roller 53 and the paper tube 1 by the downward movement of the pressing roller 53, and the supporting arm 43a is rotated about the lower shaft 42c. The blade edge of the cutter blade 47 comes into contact with the surface of the sheet S, as shown in (B).

In the state shown in (b), since the sheet body S is pressed against the surface of the paper tube 1 by the pressing roller 53, the sheet body S adheres to the adhesive layer 11 of the paper tube 1 and When the tube 1 starts to be wound around the paper tube 1 by the counterclockwise rotation around the paper tube mounting shaft 105, the support arm 4
The seat body S is cut by the cutter blade 47 as shown in (C) by continuing the clockwise rotation of the lower shaft 42c of 3a.

In the present invention, the speed increasing mechanism 42
Since the peripheral speed of the cutter blade 47 is set to be higher than the peripheral speed of the surface of the sheet body S by the paper tube 1 by the speed increasing action of the support arm 43a, the rotation of the support arm 43a around the lower shaft 42c causes the support arm 43a to move. The brush 48a provided at the tip presses the sheet body S closer to the tip than the portion adhering to the paper tube 1 toward the surface of the paper tube 1, and as a result, the sheet body S is pressed as shown in (c). The entire front end of the sheet adheres to the surface of the paper tube 1 in surface contact, and the sheet body S is reliably prevented from wrinkling.

FIG. 5 is a perspective view showing a state in which the cut sheet body adheres to the paper tube. As shown in this figure, on the outer peripheral surface of the paper tube 1, a plurality of pressure-sensitive adhesive layers 11 in which pressure-sensitive adhesives are annularly applied at equal intervals are formed.
The cut end portion of the sheet body S is adhered to the sheet body 1 without wrinkles.

Then, the support arm 43a is rotated counterclockwise around the lower shaft 42c by the drive of the third drive means 41 to return to the original standby posture, and the first drive means 6 is also provided.
And the frame plate 31 and the support arm 51 are rotated clockwise about the base end shaft 32 by the drive of the second drive means 7,
Each of them is returned to the standby posture shown by the chain double-dashed line in FIG. As a result, a space for winding the sheet body S is secured under the frame plate 31, and the sheet body S is wound around the paper tube 1 by the counterclockwise rotation of the paper tube mounting shaft 105 around its own axis. Will be taken.

In the above embodiment, the cutter means 4 is used to press the cut end of the sheet body S against the surface of the paper tube 1.
The brush 48a is planted in the brush member 48 of No. 3, but instead of the brush 48a, a tubular body made of rubber or soft synthetic resin or expandable synthetic resin is provided over the entire length in the longitudinal direction of the brush member 48. You may attach it. By doing so, the cylindrical body presses the sheet body S against the surface of the paper tube 1 while elastically deforming due to the flexibility of the material.
Is reliably adhered to the surface of the paper tube 1.

Instead of providing the brush 48a, a plurality of nozzles are attached to the brush member 48 in the longitudinal direction,
Compressed air may be supplied to these nozzles through a predetermined pipe, and the sheet body may be pressed against the paper tube by the air flow blown from the nozzles.

In the above embodiment, the paper tube 1 is made of paper, but instead of making the paper tube 1 of paper, it is made of synthetic resin such as vinyl chloride or metal such as iron or aluminum. It may be made of non-woven fabric or non-woven fabric. Further, the sheet S is not limited to the one made of paper, and may be a film made of a synthetic resin, a metal foil such as an aluminum foil or a copper foil, or a combination thereof.

Further, in the above embodiment, the annular adhesive layer 11 is intermittently formed on the paper tube 1, but instead of providing the adhesive layer 11 intermittently, the entire surface of the paper tube 1 is replaced. An adhesive layer may be formed on. When the pressure-sensitive adhesive layer is formed on the entire surface, spray-type glue may be applied by spraying. In order to dispose the annular pressure-sensitive adhesive layer 11 intermittently, the one-sided pressure-sensitive adhesive tape or the double-sided pressure-sensitive adhesive tape coated with the pressure-sensitive adhesive may be wound around the paper tube 1.

When the diameter of the paper tube 1 is changed,
Although it can be dealt with by changing the length of the support arm 43a, the support arm 4a can be changed without changing the length of the support arm 43a.
3a may be pivotally supported by the intermediate shaft 42b. By thus supporting the support arm 43a on the intermediate shaft 42b, the rotation locus of the cutter means 43 is changed.
It is possible to deal with a paper tube having a diameter that is close to this locus.

Further, the counterclockwise rotational displacement of the frame plate 31 about the base end shaft 32 can be adjusted so that the cutter means 43 rotates about the lower shaft 42c in accordance with the change in the diameter of the paper tube 1. If the rotational displacement of the frame plate 31 that does not collide with the paper tube 1 is set, the dimensions of the support arm 43a can be changed or the support arm 4
It is possible to cope with a change in the diameter of the paper tube 1 without performing a troublesome operation such as changing the lower shaft 42c from the lower shaft 42c to the intermediate shaft 42b.

Further, in the above embodiment, the speed increasing mechanism 42 is formed of a plurality of gears, but instead of using gears, one lever rotatably supported around a predetermined axis is used. Alternatively, it is possible to configure a speed increasing mechanism by combining a plurality of levers. In this way, the lever is cheaper to process than the gear, and therefore the cutting device 2
Manufacturing cost can be reduced.

In addition, each of the driving means 6, 7, and 41 can be replaced with a rotary actuator, an electric motor or the like instead of using the cylinder type using fluid pressure. Moreover, you may make it employ | adopt it combining them.

[0065]

According to the cutting apparatus for sheet according to the first aspect of the present invention, the cutter means is moved around the main axis by driving the cutter blade driving means to shift the cutter means from the standby position to the cutting position. When the cutter blade is rotated, the cutter blade cuts the sheet body stretched close to the surface of the paper tube, and the pressing means presses the cutting end against the surface of the rotating paper tube. It is cut and adheres to the paper tube, and is wound up.

Since the peripheral speed of the cutter means is set so as to be higher than the peripheral speed of the surface of the paper tube, the cutter blade after cutting the sheet has a movement amount of rotation of the paper tube. Is always larger than the movement of the cutting edge due to
As a result, the cutting edge is not interfered with by the cutter blade, and wrinkles are prevented from wrinkling at the cutting edge portion not sticking between the cutter blade and the paper tube. Is adhered in a state of being in full surface contact with the surface of.

As described above, since the sheet body can be wound around the paper tube in a perfect surface contact state where the cut end does not have wrinkles, the roll obtained has a bulging state due to the wrinkles at the cut end. It does not occur, which is convenient for reducing the defective rate of the roll.

According to the sheet body cutting device of the second aspect of the present invention, the support driving device is driven to rotate the support about the proximal end axis and bring it into the close position. The cutter means faces the paper tube via the sheet body. In this state, by shifting the cutter means in the standby posture to the cutting posture, the sheet body is cut and the winding on the paper tube is started.

Then, after the winding of the sheet body around the paper core is started, the support drive device is driven to return the support body to the standby posture, so that the roll is placed between the support body and the paper core. This is effective in increasing the diameter of the roll, because a storage space for storing it is secured.

According to the sheet body cutting device of the third aspect of the present invention, the support arm is rotated about the base axis by driving the support arm drive means in a state where the support body is set in the close position. By moving it to the sheet pressing posture, the pressing roller comes into contact with the paper tube via the sheet body, which stabilizes the sheet body to be cut and ensures that the sheet body is cut. Is convenient.

According to the sheet body cutting device of the fourth aspect of the present invention, the driving speed of the cutter means driving means is increased by the speed increasing mechanism so that the peripheral speed of the cutter means is higher than the peripheral speed of the surface of the paper tube. It is effective in speeding up.

According to the sheet body cutting device of the fifth aspect of the present invention, since the speed increasing mechanism is formed by a plurality of gears meshing with each other, the speed increasing mechanism has a simple structure. It is possible to reduce the manufacturing cost.

According to the sheet body cutting device of the sixth aspect of the present invention, after the sheet body is cut, the cut end is pressed against the surface of the paper tube by the brush or the tubular body, so that wrinkles are generated. It is convenient for adhering the sheet body to the paper tube so that it does not exist.

According to the sheet body cutting apparatus of the seventh aspect of the present invention, after the sheet body is cut, the cut end is pressed against the surface of the paper tube by the air flow blown from the nozzle, so that the wrinkles are wrinkled. It is convenient for adhering the sheet body to the paper tube so that it does not come into contact.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a sheet cutting device according to the present invention.

FIG. 2 is a perspective view of the sheet body cutting device of FIG.

FIG. 3 is a perspective view showing an example of cutter means.

FIG. 4 is a partially enlarged side view showing a main part of the cutting device,
(A) is the state immediately before the sheet body pressing mechanism of the cutting device is in the sheet pressing position, and (b) is the state where the sheet body pressing mechanism of the cutting device is in the sheet pressing position and the cutter means of the frame plate in the cutting position is rotated. The state where the movement is started and (c) show the state immediately after the sheet body is cut by the cutter means.

FIG. 5 is a perspective view showing a state in which a sheet body adheres to a paper tube.

FIG. 6 is an explanatory side view showing an example of a conventional sheet cutting device.

7 is a partially enlarged explanatory view showing a main part of the cutting device of FIG. 6, in which (a) is a state immediately before the sheet body is cut,
(B) is the state immediately after the sheet body is cut, (C) is
The respective states are shown in which the sheet body is wound around the paper tube.

[Explanation of symbols]

 S sheet body 1 paper tube 11 adhesive layer 100 winding device 101 base 102 bearing 103 horizontal shaft 104 winding arm 105 paper tube mounting shaft 106 support arm 107 support roller P support column P1 first horizontal shaft P2 second horizontal shaft P3 1st roller P4 2nd roller 2 Cutting device 3 Cutting mechanism holder 31 Frame plate (support) 32 Base end shaft 32a Support hole 33 Bracket 4 Cutting mechanism 41 3rd drive means (Cutter means drive means) 41a 3rd Cylinder 41b Cylinder rod 41c Coupling shaft 42 Speed increasing mechanism 42a Upper shaft 42b Intermediate shaft 42c Lower shaft (spindle) 43 Cutter means 43a Support arm 48 Brush member 48a Brush (pressing means) 5 Sheet body pressing mechanism 51 Support arm 52 Support shaft 53 Pressing roller 54 Connecting rod 6 First driving means (support driving means) 61 Cylinder 62 Cylinder rod 7 Second drive means (support arm drive means) 71 Cylinder 72 Cylinder rod X Winding position Y Removal position

Claims (7)

[Claims] 1. A sheet body is wound around a paper tube at a winding position, and when a roll having a predetermined winding amount is formed, the roll is moved to a removal position and a new paper tube is placed at a winding position. A sheet body winding device configured to move is provided, the sheet body stretched on the upstream side of the roll at the removal position is cut in the width direction, and the cut end is rotated around its own axis. In a sheet body cutting device for adhering to the surface of a paper tube on the position side, a pair of support bodies disposed on both outer sides of the stretched sheet body, and a main shaft provided between the pair of support bodies. Is provided with a rotatable cutter means and a cutter means drive means for rotating the cutter means around a main axis, the cutter means cutting the sheet body with a cutter blade and an end portion of the cut sheet body. Press on the surface of the paper core The cutter blade and the pressing means are positioned so as to face the surface of the paper tube, and the cutter means driving means has a standby posture in which the cutter blade does not cut the sheet body and a cutter. The blade is configured so that the cutter means can be rotated between the blade and the cutting posture for cutting the sheet body, and the peripheral speed of the cutter means is set to be higher than the peripheral speed of the surface of the paper tube. A sheet body cutting device characterized by the above. 2. The support body is rotatably supported on the base end side about a base end axis, and has a standby posture in which the support body is separated from the sheet body and a close posture in which the support body is close to the sheet body. Support means for rotating the support body is provided between the cutter means and the cutter means so as to traverse the sheet body on the upstream side of the roll moved to the unloading position with the support body in the close position. The sheet body cutting apparatus according to claim 1, wherein the sheet body cutting apparatus is provided in the. 3. A support arm is provided rotatably around the base end axis, and a presser roller rotatable around the support axis is provided on the tip end side of the support arm, and the presser roller is provided with a paper sheet through a sheet body. Configured to be able to abut parallel to the tube,
A support arm drive means for rotating the support arm around the proximal axis between a standby position in which the pressing roller is separated from the sheet body and a sheet pressing position in which the pressing roller contacts the paper tube via the sheet body. The sheet body cutting device according to claim 2, wherein the sheet body cutting device is provided. 4. A speed increasing mechanism for increasing the driving speed of the cutter means driving means is provided between the cutter means driving means and the main shaft. The sheet body cutting device according to any one of claims. 5. The speed increasing mechanism is formed by a plurality of gears meshing with each other.
Sheet body cutting device described. 6. The sheet body cutting device according to claim 1, wherein the pressing means is formed by a brush or a tubular body made of a flexible material. 7. The sheet body according to claim 1, wherein the pressing means is configured to press the sheet body against the paper tube by an air flow blown from a nozzle. Cutting device.