JPH065113Y2 - Cylindrical cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for cutting a cylindrical body, and in particular, a synthetic resin film, a cloth or a rubber sheet on the outer surface of a cylindrical object such as a paper tube. The present invention relates to a cutting device that cuts a columnar body in which the above are wound in a radial direction.

(Prior Art) A conventional film roll cutting device which is the background of the present invention is disclosed in Japanese Utility Model Publication No. 51-55485.
This conventional film roll cutting device has two
The rollers are arranged side by side in a state of being rotatably supported, and the rollers are configured to be rotated by a driving device. Further, the rollers are arranged above the planned position of the film roll mounted on the rollers. Is a circular blade that moves up and down in the radial direction of the film roll, and the outer blade is rotatably supported and contacts the outer circumference of the rotating film roll. It is a film roll cutting device which is driven and rotated.

Further, a conventional tube cutting machine which is the background of this invention is disclosed in Japanese Patent Laid-Open No. 126594/51. This conventional pipe cutting machine includes a machine base, a circular saw provided on the machine base so as to be retractable, a drive unit for rotating the circular saw, and a pipe for fixing the pipe on the machine base. A pipe cutting machine comprising a fixture and a rotating mechanism for rotating the pipe.

Further, a conventional device for cutting an electrically insulating tube, which is the background of the present invention, is disclosed in JP-A-57-96796. This conventional device for cutting an electrically insulating pipe is a device for cutting a pipe of an electrically insulating material fitted onto a metal core shaft to a predetermined length in the axial direction, and is provided outside the pipe. Drive device that moves the metal cutting blade in the perspective direction with respect to the axis of the core axis, a device that relatively rotates the tubular body and the cutting blade around the axis of the core axis, and the cutting edge of the cutting blade is the core. An electric circuit that detects that the cutting blade and the core shaft are energized by contacting the shaft, and reversely operates the drive device so as to move the cutting blade backward when the energized state is detected. And a control circuit for controlling the electric insulating tube body.

(Problems to be solved by the invention) However, in the conventional film roll cutting device disclosed in Japanese Utility Model Laid-Open No. 51-55485, when the film roll is cut, the film roll moves in its axial direction. In some cases, the film roll cannot be cut cleanly.

Further, in the pipe cutting machine disclosed in JP-A-51-126594, a synthetic resin film is formed on the outer surface of a cylindrical object.
When cutting a columnar body wrapped with cloth or a rubber sheet, if the axis of the columnar body matches the axis of the internal cylindrical object, the columnar body can be rotated well. It can be supported and can be cut cleanly, but when the outer circumference of the columnar body is uneven or the axis of the columnar body is deviated from the axis of the internal cylinder, the columnar body is supported so that it can rotate well. It may not be possible to cut it cleanly.

Similarly, in the electric insulating tube cutting device disclosed in Japanese Patent Application Laid-Open No. 57-96796, when the outer circumference of the columnar body is not uniform or the shaft center of the columnar body is the axis of the cylindrical object. When it is off the center, the cylindrical body may not be rotatably supported well, and it may not be possible to cut it neatly.

Therefore, the main purpose of this invention is to enable the cylindrical body to rotate well even if the outer circumference of the cylindrical body is not uniform or the axis of the cylindrical body deviates from the axis of the internal cylinder. An object of the present invention is to provide a cylindrical cutting device that can be supported and can be cut cleanly.

(Means for Solving the Problems) In the present invention, a pair of holding rollers which are formed so as to be rotatable or mountable between them so as to be able to approach or separate from each other, and a pair of holding rollers. A pair of holding blades is provided with saw blades whose both main surfaces are formed in the radial direction of the holding roller so that the holding roller can approach or separate from the holding roller in a direction orthogonal to the axial direction of the holding roller. A cylindrical body cutting device for cutting a cylindrical body placed between rollers in a radial direction with a saw blade, which is provided near one end of a pair of holding rollers and rotates the cylindrical body. A fixing device for freely fixing, wherein the fixing device is movably fixed in a horizontal direction orthogonal to the axial direction of the pair of holding rollers, and the fixing device is movably fixed in a vertical direction,
It is a cutting device for a cylindrical body.

(Operation) Since the pair of holding rollers are formed so as to be able to approach or separate from each other, the pair of holding rollers approaches or separates according to the diameter of the cylindrical body placed between them. .

Since the saw blade has both main surfaces formed in the radial direction of the cylindrical body placed between the pair of holding rollers,
The cylindrical body placed between the pair of holding rollers is cut in the radial direction.

The fixing device rotatably fixes the cylindrical body. Since this fixing device is movably fixed in the horizontal direction orthogonal to the axial direction of the pair of holding rollers, and this fixing device is also movably fixed in the vertical direction, the outer periphery of the cylindrical body is not uniform. In the case or in the case where the axis of the columnar body is deviated from the axis of the inner cylindrical body, the columnar body can be rotatably fixed by rotating the columnar body on a pair of holding rollers. The central axis of the is displaced in the horizontal direction and the vertical direction orthogonal to the axial direction of the pair of holding rollers, and the columnar body is supported so as to be able to rotate well on the pair of holding rollers without being separated from the pair of holding rollers. Therefore, the cylindrical body is cut cleanly.

(Effect of the Invention) According to the present invention, even if the outer circumference of the cylindrical body is not uniform or the axis of the cylindrical body deviates from the axis of the internal cylindrical object,
The columnar body can be supported rotatably well and can be cut cleanly.

The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments below with reference to the drawings.

(Embodiment) FIG. 1 is an illustrative view of a main part of the present invention. First, the entire cutting device 10 will be described.
Is an apparatus for cutting a cylindrical body 14 in which a thin synthetic resin film is wound around the outer peripheral surface of a cylindrical paper tube 12 in the radial direction thereof, so-called a circular slice.

The cutting device 10 includes a pair of holding rollers 16a and 16b on which the cylindrical body 14 is placed.

The pair of holding rollers 16a and 16b are attached to roller moving bodies 20a and 20b, which are movably fixed to a reverse threaded rod 18 in which right and left sides are differently engraved with reverse threads.
Each is rotatably fixed.

As shown in FIGS. 2 and 3, the reverse threaded rod 18 has a gear 22 fixed to one end thereof and a gear 24 meshed therewith.
The roller moving bodies 20a and 20b are formed to rotate by rotating a handle 26 fixed to the roller moving bodies 20a and 20b.
Are formed so that as the reverse screw rod 18 rotates, they move to the left and right in opposite directions so that they can approach and separate from each other.

The roller moving bodies 20a and 20b and the reverse screw rod 18 are provided at both ends of the holding rollers 16a and 16b as shown in FIGS. 2 and 3, and one end of the reverse screw rod 18 has a gearbox. A gear 22 forming a miter gear housed in 28a and 28b is fixed.

The handle 26 is a gear 24 that forms a miter gear.
Is connected to the rotary shafts 30 and 30a via
0 and 30a are gearboxes 28a, 28b and 28
rotatably through a bearing 32 provided in c
It is fixed to.

A chuck 36, which constitutes a fixing device for rotatably fixing the cylindrical body 14, is provided near one end of each of the holding rollers 16a and 16b, as shown in FIGS. 2, 3, and 9.

The chuck 36 is provided with a pawl 36a that moves in the radial direction, and the pawl 36a is moved in the radial direction by the action of rotating with the movement of a rack (not shown) that meshes with the gear 38, and It is formed so as to grasp the peripheral surface or the outer peripheral surface.

As shown in FIG. 9, the chuck 36 constituting the fixing device is rotatably held by the moving bearing 40 by being connected to one end of a rotating shaft 41 rotatably held by the moving bearing 40. . The other end of the rotary shaft 41 is connected to the spline shaft 132 by the universal joint 42.
Are linked to. The spline shaft 132 is rotatably provided on the base 34, as shown in FIG.
Further, the spline shaft 132 is connected to the drive gear 44.

The drive gear 44 meshes with the drive gear 48 fixed to the rotating shaft of the motor 46, and the rotational force of the motor 46 is transmitted to the cylindrical body 14 fixed to the chuck 36 so that the cylindrical body 14 can be rotated. It is configured. The holding rollers 16a and 16b, which support the lower surface of the cylindrical body 14 that is rotationally driven, follow and drive the cylindrical body 14 by the chucking action of the chuck 36 at one end so that the cylindrical body 14 is not displaced in the longitudinal direction. It is configured so that it can perform a circular rotary motion.

On the other hand, as shown in FIGS. 4 and 5, the vertical axis 50a
And 50b are vertically fixed to the moving base 124. The moving base 124 includes a shaft 128 and a fixed base 126.
It is fixed to the base 34 via a and 126b. Vertical moving bearings 52a and 52b are fixed to the vertical shafts 50a and 50b so as to be slidable in the vertical direction. Also, these vertical moving bearings 5
For example, two horizontal shafts 54 are horizontally extended between 2a and 52b. Therefore, these horizontal shafts 54 are aligned with the vertical moving bearings 52a and 52b and the vertical shafts 5.
It is possible to move vertically by the action of 0a and 50b.

Further, a horizontal moving bearing 56 is attached to these horizontal shafts 54.
The movable bearing 40 is fixed so as to be movable in the horizontal direction, and the movable bearing 40 is fixed to the movable bearing 56. Therefore, the moving bearing 40 can move in the horizontal direction by the action of the horizontal moving bearing 56 and the horizontal shaft 54.

That is, the moving bearing 40 that holds the chuck 36 that constitutes the fixing device is movably fixed in the horizontal direction by the action of the horizontal moving bearing 56 and the horizontal shaft 54, and further, the vertical moving bearings 52a and 52b and the vertical shaft 50a. And 5
By the action with 0b, it is fixed so as to be movable in the vertical direction.

Therefore, when the outer circumference of the cylindrical body 14 is not uniform or the axis of the cylindrical body 14 is deviated from the axis of the inner cylindrical paper tube 12, the cylindrical body 14 is placed on the pair of holding rollers 16a and 16b. When rotated by, the central axis of the chuck 36 constituting the fixing device for rotatably fixing the cylindrical body 14 is 1
The pair of holding rollers 16a and 16b are displaced in the horizontal direction and the vertical direction orthogonal to the axial direction, and the cylindrical body 14 is displaced to 1
It is well rotatably supported on a pair of holding rollers 16a and 16b without leaving the pair of holding rollers 16a and 16b. Therefore, the cylindrical body 14 is cut cleanly. As described above, when the cylindrical body 14 rotates, it is possible to deal with unevenness of the outer circumference of the cylindrical body 14, and moreover, the center can always be opened from the outer circumference of the cylindrical body 14, so that the cut surface of the cylindrical body 14 is cut. Is clean and can be cut accurately.

The vertical movement bearings 52a and 52b are formed so as to be able to move up and down as the gear 60a fixed to the handle 58 rotates. That is, the vertical movement bearing 52a and the vertical moving bearing 52a and the connecting body 66 are moved through the female screw body 64 and the connecting body 66 so that the screw rod 62 fixed to the gear 60b that meshes with the gear 60a and rotates can be moved up and down. 52b is configured to be movable up and down. In addition, the female screw body 6
The 4 and the connecting body 66 are not fixed by bolts or the like, but a knock pin 65 is loosely fitted in a through hole penetrating the flange portion of the female screw body 64, and the knock pin 65 is fixed to the connecting body 66 with a click. For this purpose, the vertical moving bearings 52a and 5
2b, while rotating the cylindrical body 14,
4 can be finely moved up and down corresponding to the unevenness of the outer peripheral surface. That is, after the cylindrical body 14 is chucked by the chuck 36, the handle 58 is rotated to move the female screw body 6
4 is lowered a little, and it is 1 cm between the female screw body 64 and the connection body 66.
It is configured to have a certain degree of clearance.

In order to feed the cylindrical body 14 onto the holding rollers 16a and 16b, in this embodiment, as shown by the phantom line in FIG. 2, at the same height as the holding rollers 16a and 16b, A mounting plate 68 for preliminarily mounting the body 14 is continuously provided on the side end of the base 34.

Next, a circular saw device 70 for cutting (circularly cutting) the cylindrical body 14 in the radial direction thereof will be described with reference to FIGS. 2, 3, and 11.
A description will be given based on the figure.

The circular saw device 70 is provided on a mount 72 mounted on the base 34 and includes a circular saw blade 74. This circular saw blade 74
As shown in FIG. 3 and FIG. 3, it is provided on a circular saw moving device 76 that moves on the frame 72. That is, in the circular saw moving device 76, the shaft 78 fixed in the vertical direction is used.
A circular saw blade 74 is fixed to a bearing 80 that is movably provided in the.

Then, the circular saw blade 74 moves the motor 84 via the belt 82.
And is configured to be rotatable with the rotation of the motor 84.

The motor 84 is connected to the reciprocating rod of the cylinder 86,
The action of the cylinder 86, for example, by selecting an air cylinder to allow air to enter only on the rod side in the cylinder, always raises the motor 84 to support the motor 84 and adjust the tension of the belt 82. It is configured.

The circular saw moving device 76 is configured to move the holding roller 1 along the track of a rail body 88 provided in the frame 72 in the longitudinal direction.
It is configured to move in the longitudinal direction of 6a and 16b and regulate the cutting width of the cylindrical body 14 in the longitudinal direction.

In this embodiment, in order to position the holding rollers 16a and 16b of the circular saw blade 74 in the longitudinal direction, as shown in FIG. 2 and FIG.
0 is rotated, and a gear (not shown) is attached to the rotation shaft of the motor 90.
The electromagnetic clutch 92 connected via the pinion gear 94 is connected to the pinion gear 94 so that the circular saw moving device 76 can move accurately on the rack 96 as the pinion gear 94 rotates. .

In this embodiment, an encoder 98 is connected to the pinion gear 94, and the encoder 98 measures the rotation angle of the pinion gear 94. That is, the rack 96 is engraved with teeth at a pitch of 10 mm, the pinion gear 94 is provided with 20 teeth, and the circular saw blade 74 is moved by 200 mm when the pinion gear 94 makes one rotation. It is formed so as to generate 2,000 pulses, and is formed so as to move by 0.1 mm per pulse. In addition, the number of pulses generated by the encoder 98 includes a counter and a microcomputer,
A central processing unit (not shown) performs arithmetic processing and controls the circular saw moving device 76.

Therefore, the circular saw moving device 76 is operated by the cooperation of the pinion gear 94, the rack 96, and the encoder 98.
Is formed so as to accurately move in the longitudinal direction of the holding rollers 16a and 16b, and is formed so that the cutting wheel cutting position of the cylindrical body 14 can be finely adjusted.

The circular saw blade 74 is connected to the motor 100 and is formed so as to move up and down by the operation of the motor 100.

Next, the moving mechanism of the pair of holding rollers 16a and 16b will be described.

The roller moving bodies 20a and 20b for rotatably fixing the holding rollers 16a and 16b are shown in FIGS. 6 and 7A.
As shown in the drawing, the rails 102a of the pair of left and right guides 102 fixed in the width direction of the base 34 are slidably fixed.

Then, the reverse screw rod 18 for moving the roller moving bodies 20a and 20b is housed in the concave portion of the guide base 102, and both ends thereof are, as shown in FIG. 1, in the bearing portion 102b of the guide base 102, The bush 104, the thrust bearing 106, and the nut 108 are rotatably fixed, and the reverse-threaded rod 18 is fixed at one end thereof with the gear 22 forming a miter gear as described above.

The gear 22 forming a miter gear fixed to one end of the reverse screw rod 18 meshes with a gear 24 connected to a handle 26.

The gears 22 and 24 are attached to the holding rollers 16a and 1a.
It is housed in gear boxes 28a and 28b provided near both ends of 6b, and is connected between the left and right gears 24 and 24 via a shaft coupling 110 that adjusts the positions of the moving bodies 20a and 20b.

As shown in FIG. 8A, the shaft coupling 110 is composed of a pair of plates 112a and 112b.
12a is fixed to the rotary shaft 30 and the other plate 112b is fixed to the gear 24.
It is fixed with a knock pin.

Then, a long hole 114 is formed in the plate 112a, and a bolt inserted in the long hole 114 is screwed into a screw hole 116 formed in the other plate 112b, whereby the plates 112a and 112b are joined together. It is formed so that it can be connected and fixed.

Therefore, the roller moving bodies 20a and 20b movably fixed to the reverse threaded rod 18 are slightly rotated by the action of the elongated hole 114 formed in the plate 112a, for example, the reverse threaded rod 18 is rotated. Both roller moving bodies 20a and 20b can be located at the center. Therefore, by adjusting the left and right shaft couplings 110, the distance between the holding rollers 16a and 16b can be made uniform at both left and right ends, that is, at the gearbox 28a and 28b sides.

The rotary shafts 30 and 30a are connected to the gearbox 28.
As described above, both ends of the bearings 32 are fixed to the bearings a, 28b, and 28c (see FIG. 8A).

In this embodiment, the reverse threaded rod 18 is configured to rotate by the rotation of the handle 26. However, for example, a motor is connected via an electromagnetic clutch and the reverse threaded rod 18 is rotated by the operation of the motor. It may be configured to do so.

Next, the roller moving body 2 of the holding rollers 16a and 16b
Regarding the mounting structure to 0a and 20b, mainly
A description will be given based on the figure.

The holding rollers 16a and 16b are formed in a hollow cylindrical shape, in which a bearing 118 having a bearing ball is fitted and fixed to a fixed shaft 122 with a collar 120 so as to be rotatable.

The rotary shaft 122 is used for the roller moving bodies 20 a and 20.
It is fitted in the hole formed in b and is fixed by a bolt.

Subsequently, a fixing device that fixes and rotates the cylindrical body 14 will be described in detail.

When the cylindrical body 14 is placed on the holding rollers 16a and 16b, the cylindrical body 1 is further attached to the moving bearing 40.
In order to make it easy to fix 4, in this embodiment,
The vertical shafts 50a and 50b supporting the moving bearing 40 are
As shown in FIG. 4, FIG. 7A, and FIG. 7B, it is fixed to the moving base 124.

The moving base 124 is slidable on a shaft 128 laid between fixed bases 126a and 126b fixed near the holding rollers 16a and 16b in the longitudinal direction of the base 34 and at a position near the motor 46 apart from the holding rollers 16a and 16b. It is fixed so that it can move freely.

The moving base 124 is configured to be movable by the expansion and contraction of the rod of the cylinder 130 fixed to one end of the fixed base 126b.

The universal joint 42 is also connected to the drive gear 44 via a spline shaft 132 slidably fixed to the bearing 131, as shown in FIG.

Therefore, the chuck 36 holds the holding rollers 16a and 1
The movement of the cylinder 6b in the longitudinal direction can be performed by operating the cylinder 130.

Next, a method of using the cutting device 10 according to the present invention will be described. First, the cylindrical body 14 is placed on the support rollers 16a and 16b, and the handle 26 is rotated to adjust the distance between the support rollers 16a and 16b. Next, the handle 58 is rotated to set the chuck 36 at the center of the paper tube of the cylindrical body 14, and the claw 36a of the chuck 36 grasps the outer circumference or the inner circumference of the paper tube to hold the cylindrical body 14 in the chuck 36.
Fixed to.

When this preparation is completed, the motor 46 is started and the cylindrical body 14
To rotate. Next, the cutting width of the cylindrical body 14 by the circular saw blade 74 is set by a central processing unit (not shown), the gear motor 90 is turned on, the electromagnetic clutch 92 and the encoder 9 are turned on.
Turn on 8. Then, cutting is instructed by a cutting signal from the central processing unit, and the circular saw moving device 76 is moved to a predetermined position. At this time, when the circular saw blade 74 is located at a predetermined position, the gear motor 90 is turned off and the electromagnetic clutch 92 is turned on, the wobble of the circular saw moving device 76 is stopped by the action of the speed reduction mechanism provided in the gear motor 90, and the motor 84 The circular saw blade 74 is rotated by the action of. And the circular saw blade 74
The circular saw blade 74 is operated by operating the motor 100 that moves the blade up and down.
The bearing 80 connected to the cylindrical body 14 is gradually lowered downward, that is, toward the cylindrical body 14, and the circular saw blade 74 is used to move the cylindrical body 14 together.
Disconnect. In this embodiment, when the cylindrical body 14 is cut, the rotation of the motor 84 is stopped and the rotation of the circular saw blade 74 is stopped. Then, when the circular saw blade 74 is raised by the gear motor 100, one stroke (cutting) is completed. Next, by turning on the gear motor 90 and turning on the electromagnetic clutch 92, the circular saw blade 74 is moved to the next cutting position, and cutting is performed in the same manner as described above.

In this embodiment, initially, when the circular saw blade 74 is moved to a substantially predetermined position, the gear motor 90 is turned off, the electromagnetic clutch 92 is also turned off, and the manual handle 102 is rotated to rotate the pinion. Gear 9
The circular saw moving device 76 can be moved by rotating the shaft 103 of No. 4 via the chain 106.

The cutting device 10 includes, in addition to the film,
It is possible to cut a columnar body in which a sheet material made of a wood material such as a cloth, a rubber sheet, a carpet made of vinyl chloride or the like, or a decorative veneer is wound.

[Brief description of drawings]

FIG. 1 is an illustrative view of a main part of a cutting device according to an embodiment of the present invention. FIG. 2 is a perspective view of a cutting device provided with an embodiment of the present invention. FIG. 3 is a front view of the example shown in FIG. FIG. 4 is a perspective view of a cylindrical fixing device in the example shown in FIG. FIG. 5 is a sectional view of an essential part of the cylindrical body fixing device in the example shown in FIG. FIG. 6 is an illustrative view showing a moving mechanism of a holding roller. FIG. 7A is an illustrative view showing a moving mechanism of a holding roller and a moving bearing. FIG. 7B is an illustrative view showing a moving mechanism of the moving bearing. FIG. 8A is an illustrative view showing a rotating mechanism of a reverse screw rod,
FIG. 8B is an illustrative view showing the shaft coupling. FIG. 9 is an illustrative view showing a main part of a fixing device for a cylindrical body. FIG. 10 is an illustrative view showing a main part of a moving table. FIG. 11 is an illustrative view of the circular saw device shown in FIG. In the figure, 10 is a cutting device, 14 is a cylindrical body, 16a and 16b are holding rollers, 34 is a base, 36 is a chuck, 40 is a moving bearing, 46 is a motor, 70 is a circular saw device,
72 is a mount, 74 is a circular saw blade, and 76 is a circular saw moving device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-57-96796 (JP, A) JP-A-51-126594 (JP, A) Actually-opened Sho-51-55485 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A pair of holding rollers formed so as to be rotatable or mountable between them so as to be close to or apart from each other, and orthogonal to the axial direction of the pair of holding rollers. A saw blade formed so that both main surfaces thereof are directed in the radial direction of the holding roller so that the holding roller can be moved toward or away from the holding roller in a direction. A columnar body cutting device for cutting a columnar body in the radial direction with the saw blade, which is provided near one end of the pair of holding rollers and rotatably fixes the columnar body. The fixing device is movably fixed in a horizontal direction orthogonal to the axial direction of the pair of holding rollers, and further, the fixing device is movably fixed in a vertical direction,
Cylinder cutting device. 2. A columnar structure according to claim 1, wherein the pair of holding rollers are rotatably fixed to a moving body which is movably fixed to an inverted screw rod by being laterally divided. Body cutting device.