JPH01145962A - Paper pipe supporting device - Google Patents

Abstract

PURPOSE:To enable transmission of a sufficient rotation force through resilient engagement of a resilient sleeve with the inner peripheral surface of a paper pipe, by providing a rod driving means which is engaged internally of a resilient sleeve engageable with the paper pipe, axially moves a rod based on a rotary shaft, and deforms the resilient sleeve in the shape of a drum. CONSTITUTION:A resilient sleeve 43 made of rubber or urethane is externally engaged for support between an end part flange 42a of a rod 42 axially slidably supported on a rotary shaft 41 and an end surface 41a of the rotary shaft 41. When the rod 42 is axially moved and nipped between the end part flange 42a and the end surface 41a of the rotary shaft 41, the resilient sleeve 43 is expanded in the shape of a drum, and this constitution enables transmission of sufficient torque through resilient engagement of the sleeve with the inner peripheral surface of the paper pipe. In this case, since the resilient sleeve 43 makes smooth surface contact with the inner peripheral surface of the paper pipe by dint of expansion, a crack is prevented from occurring to an engagement part.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a paper tube support for rotationally driving a paper tube when cutting a roll such as a wide insulation tape wrapped around a paper tube into a predetermined width. It is related to the device.

[Prior art] When manufacturing insulation tape, adhesive is applied to a wide (for example, 1 m) resin film or a resin film with insulation material pasted on it, a release paper is overlaid on the adhesive surface, and a paper tube is pasted. is wound up. It is then cut into pieces about 5 cm wide and sold commercially. As shown in FIG. 4, the conventional scroll support device inserts a chuck consisting of a three-part body 53 expandably supported on a rotating shaft 51 into the paper tube 3, and then moves the divided body 53 radially outward. Support the paper tube 3 by expanding it. The scroll is cut into pieces by the cutter while rotating together with the rotating shaft 51.

However, since the paper tube 3 has insufficient rigidity and the chuck does not make surface contact but makes strong local contact, when the rotational force is transmitted to the paper tube 3, the gap between the paper tube 3 and the chuck 53 If slippage or deformation occurs, the paper tube 3 will be damaged, making it impossible to shred it with a cutter.

[Problems to be Solved by the Invention] In view of the above-mentioned problems, an object of the present invention is to provide a paper tube support device that can elastically engage with the inner peripheral surface of a paper tube and transmit sufficient rotational force. It is about providing.

[Means for Solving the Problem] In order to achieve the above object, the configuration of the present invention is such that a cap rad is slidably fitted in the axial direction to a hollow rotating shaft supported on a base frame,
An elastic sleeve that can be fitted onto a paper tube is fitted and supported between the tip flange of the rod and the end wall of the rotating shaft, and the rod is moved axially with respect to the rotating shaft to deform the elastic sleeve into a drum shape. It is equipped with a rod driving means to

[Operation] An elastic sleeve 43 made of rubber or urethane is externally fitted and supported between the end flange 428 of the rod 42 supported on the rotating shaft 41 so as to be slidable in the axial direction and the end surface 41a of the rotating shaft 41. By moving the rod 42 in the axial direction, the end flange 4
2a and the end surface 41a of the rotating shaft 41,
The elastic sleeve 43 swells in a drum shape, which causes the paper tube 3
It elastically engages with the inner circumferential surface of the shaft to enable sufficient torque to be transmitted. The elastic sleeve 43 swells and smoothly attaches to the paper tube 3.
Since it is in surface contact with the inner circumferential surface of the engaging part, no cracks will occur in the engaging part.

[Embodiments of the Invention] Fig. 2 is a side view showing a schematic configuration of a scroll shredding device equipped with a tube support device according to the present invention, and Fig. 3 shows the relationship between the scroll 2 and the roller 5 that supports it. FIG.

As shown in FIG. 3, the scroll 2, which is a paper tube 3 wrapped with heat insulating tape 4, is placed on a pair of left and right receivers on rollers 5.
When the paper tube 3 is rotationally driven, the roller 5 freely rotates together with the shaft 6 to support the roll 2 straightly.

As shown in FIG. 2, a pair of left and right pillars 34a, 3
4b is erected, between which the shaft 6 of the roller 5 is rotatably supported. Moreover, 1
When the pair of feed screw shafts 36 are freely rotatably supported and rotationally driven by a motor (not shown), the reciprocating table 21 threadably supported by the pair of screw shafts 36 is sent in the axial direction.

A hollow rotary shaft 41 is supported by a bearing (not shown) on the carriage 21, and a motor 3 is connected to a gear 29 connected to the right end of the rotary shaft 41.
The gears 31 supported on the shafts 2 and 3 are meshed with each other.

The motor 32 is supported by an arm 33 that projects from the carriage 21 to the right.

A rod 42 is supported by a rotating shaft 41 so as to rotate with it and to be able to slide in the axial direction, and a support device having an elastic sleeve 43 according to the present invention is attached to the left end of the rod 42 . The lower end of the lever 27 is connected to the right end of the rod 42 by the pin 30. The lever 27 is rotatably supported by an arm 37 protruding from the carriage 21 by a support shaft 28 . The rod 25 of the actuator 22 is connected to the upper end of the arm 27 by a pin 26 . The actuator 22 driven by hydraulic pressure or pneumatic pressure has a piston 24 fitted into a cylinder 23, and a rod 25 is coupled to the piston 24.

A shaft 38 of the support for receiving the paper tube 3 on the left column 34a is preferably supported so as to be freely rotatable and movable in the axial direction. The receiver is shaft 3
8 moves in the axial direction from the stopper 39 between a protruding state and a retracted state. Therefore, the bearing shaft 38 is connected to the rod 12 of the actuator 9 via a thrust bearing. The actuator 9 has a piston 10 fitted into a cylinder 11, and a rod 12 is coupled to the piston 10. The actuator 9 is fixed to the arm 8 protruding from the pillar 34a. The lifting platform 13 is supported so as to be movable up and down along the guide groove 14 of the pillar 34a. A disc-shaped cutter 19 is supported on the shaft 20 of this lifting table 13. The lifting table 13 is connected to a rod 18 and is raised and lowered by an actuator 15. The actuator 15 has a piston 17 fitted into a cylinder 1d, and a rod 18 is coupled to the piston 17.

As shown in FIG. 1, in the paper tube support device according to the present invention, a flange 42a is formed at the end of a rod 42 that is slidably supported in the axial direction on a rotating shaft 41 via a key 44 or a spline. Flange 42a and end face 4 of rotating shaft 41
An elastic sleeve 43 is externally fitted between it and 1a.

Next, the operation of the paper tube support device according to the present invention will be explained. When the paper tube support device moves the rod 42 to the left in FIG.
It separates from a and restores to a right cylindrical shape. In FIG. 2, a wide roll 2 is placed on a pair of rollers 5, and the roll 2 is moved to the right to insert the elastic sleeve 43 of the inner rod 42 of the paper tube 3. Then, while pressing the scroll 2 against the left end of the rotation shaft 41, the actuator 22 rotates the lever 27 counterclockwise about the support shaft 28,
When the rod 42 is moved to the right, the elastic sleeve 43 that fits into the paper tube 3 is sandwiched between the end flange 428 and the end surface 41a of the rotating shaft 41 and becomes drum-shaped, with the center portion radially outward. It expands and comes into strong frictional engagement with the inner peripheral surface of the paper tube 3. The elastic sleeve 43 only makes smooth surface contact with the inner surface of the paper tube 3 and does not damage the paper tube 3.

Then, the actuator 9 causes the receiver to insert the shaft 38 into the paper tube 3 of the scroll 2. Further, when the feed screw shaft 36 is driven to move the carriage 21 to the left, the left end of the scroll 2 is moved to the left side.
- While the right end portion contacts the collar 39, the right end portion contacts the end surface of the rotating shaft 41 as described above.

Next, when the motor 32 is rotated, the rotating shaft 41 is rotated through the two gears 31. At the same time, the rod 42 is also rotated and the scroll 2 is rotated via the elastic sleeve 43. At this time, the pair of supports smoothly and horizontally support the roll 2 as the roll 5 rotates freely.

Next, when the actuator 15 slowly pushes down the cutter 19 together with the lifting table, the roll 2 is cut to a predetermined size, that is, the width of the gap between the stopper 39 and the cutter 19. Then, when the shaft 38 of the receiver is retracted to the left by the actuator 9, the scroll cut into pieces of a predetermined width is removed downward. The cutter 19 is pulled up by the actuator 15.

Next, the feed screw shaft 36 is driven again to send the roll 2 to the left, and the actuator 9 moves the shaft 38 to the right as shown in the figure, and inserts it into the paper tube 3.

When one cutter is pressed down, the scroll 2 is shredded to a predetermined width in the same manner as described above. By repeating such operations, the scroll 2 is sequentially shredded to a predetermined width.

[Effects of the Invention] As described above, the present invention includes a rod fitted into a hollow rotating shaft supported on a base frame so as to be slidable in the axial direction, and a space between the tip flange of the rod and the end wall of the rotating shaft. An elastic sleeve that can be fitted onto a paper tube is supported externally, and a rod driving means is provided that moves the rod in the axial direction relative to the rotating shaft and deforms the elastic sleeve into a drum shape. When the paper tube is moved in the axial direction, the elastic sleeve is sandwiched between the end flange of the rod and the end face of the rotating shaft and expands into a drum shape. rotation is transmitted to the scroll. In this case, the elastic sleeve elastically contacts the entire surface in the circumferential direction and there is no uneven contact, so that the paper tube is not damaged and a smooth shredding operation is achieved.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the paper tube support device according to the present invention, and FIG.
The figure is a side view of a shredding device equipped with a paper tube support device, FIG. 3 is a front view showing the relationship between the roll and the receiver, and FIG. 4 is a front sectional view showing the configuration of a conventional paper tube support device. It is. 2: Scroll 3: Paper tube 5: Uke is a roll 7: Base 9.1
5, 22: Actuator 19 Nikatsuta 21; Carriage 34a, 34b: Pillar 36: Feed = 9- Screw shaft 38: Receiver is shaft 41: Rotating shaft 41a: End face
42: Rod 42a: End flange 43: Elastic sleeve 44: Key patent applicant Toyo Sekkei Wako Plastic Co., Ltd. Agent Patent attorney Toshio Sanmizu

Claims (1)

[Claims] A rod is fitted to a hollow rotating shaft supported on a base frame so as to be able to slide in the axial direction, and an elastic sleeve that can be fitted onto a paper tube is externally supported between the tip flange of the rod and the end wall of the rotating shaft. A paper tube support device characterized by comprising a rod driving means for moving the rod in the axial direction with respect to the rotating shaft and deforming the elastic sleeve into a drum shape.