JP2501837Y2 - Winding tube drive - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding tube drive device.

[0002]

2. Description of the Related Art When a sheet is unwound from a winding tube around which the sheets are wound or when the sheets are wound around the winding tube, the winding tube is rotationally driven. The rotary drive inserts the reel inside the winding tube, moves the reel outward in the radial direction,
By increasing the outer diameter of the winding frame, the outer surface of the winding frame is pressed against the inside of the winding tube to be mechanically integrated. Then, the winding tube is rotated by rotating the winding frame.

When removing the winding tube from the winding frame, the winding frame is moved inward in the radial direction to reduce the outer diameter of the winding frame and then removed from the winding tube, and the winding tube is pulled out. As will be understood from this, it is necessary that the winding frame has a variable outer diameter and is rotatable.

The structure for that purpose will be described with reference to FIG. 1. The main shaft 1 is rotatably supported by a frame 2 by bearings 3. A chain gear 4 is fixed to the main shaft 1, and the chain gear 4 and a motor 5 attached to the frame 2
It is adapted to be rotationally driven by a chain 7 which is hung between a chain gear 6 which is rotated by. A belt or other mechanism may be used as the rotating mechanism of the main shaft 1.

One end of the reel core 8 is fixed to one end of the main shaft 1 and rotates integrally with the main shaft 1. The operation shaft 9 is astride the main shaft 1 and the winding frame core 8 along the axial direction thereof.
Has been inserted. The operating shaft 9 is connected to the main shaft 1 via a key 10, and therefore rotates integrally with the main shaft 1 and is slidable in the axial direction of the main shaft 1.

A movable link base 11 is fixed to the tip of the operating shaft 9. The movable link base 11 is slidably fitted to the tip of the reel core 8 and the movable link 12
The link 13 constituting the above is supported directly and via the connecting rod 14. One end of a fixed link 15 to which one end of the link 13 is connected is fixed to the reel core 8.

As described above, a plurality of movable links 12 (two in the illustrated example) are installed along the axial direction of the winding frame core 8, and a plurality of movable links 12 are installed along the circumferential direction. The tips of the links 15 of the movable links 12 are connected to the inner surface of the winding frame 16, respectively. Each winding frame 16 is arranged in a tubular shape, and the movable link 12 has an outer diameter of the tubular shape as described later.
It is variable depending on. A winding tube 17 is inserted around the outer circumference of the winding frame 16.

First, the operating shaft 9 is slid to the left.
As a result, by the linking operation of each movable link 12, each winding frame 16 moves inward in the radial direction to reduce the outer diameter. In this state, the winding frame 16 is inserted into the winding tube 17. Then, when the operating shaft 9 is slid to the right, the winding frame 16 moves outward in the radial direction to increase the outer diameter. As a result, the outer surface of the winding frame 16 is pressed against the inner surface of the winding tube 17,
Mechanically integrated.

If the motor 5 is rotated in this state, the spindle 1
Rotates, therefore, together with the winding core 8, the operating shaft 9, the movable link base 11, the movable link 12, and the winding frame 16, the winding tube 1
7 will rotate.

By the way, conventionally, a structure as shown in FIG. 4 is used as a slide drive mechanism for the operation shaft 9.
That is, the female nut 18 is rotatably fitted to the main shaft 1 at the end of the main shaft 1, and the operating shaft 9 is slidably inserted into the male screw 19 screwed into the female nut 18. A cylinder 20 is fixed to the male screw 19, and its piston 21 is attached to the operation shaft 9.

First, compressed air is injected from the port 22 to move the piston 21 to the right end of the cylinder 20.
Then, the worker rotates the female nut 18 with a spanner or the like to move the male screw 19 to the right. The movement is transmitted to the operation shaft 9 via the cylinder 20, and the movable link base 11 moves, thereby increasing the outer diameter of the winding frame 16. By changing the outer diameter of the winding frame 16, the outer surface of the winding frame 16 is brought into pressure contact with the inner surface of the winding tube 17. Spindle 1 in this state
To rotate.

To remove the winding frame 19 from the winding tube 17, compressed air is injected from the port 23 and the piston 21 is moved to the left. As a result, the operation shaft 9 moves in the same direction. By this movement, the outer diameter of the reel 16 is reduced by a certain amount corresponding to the length of the cylinder 20, and the reel 19 can be taken out.

However, according to such a configuration, the winding tube 17
Since it requires manual work by an operator every time the device is attached, it is extremely troublesome and its automation becomes difficult. Further, since both a nut mechanism for mounting the winding tube 17 and a cylinder mechanism for removing the winding tube 17 are required, the structure becomes complicated.

[0014]

SUMMARY OF THE INVENTION It is an object of the present invention to facilitate a structure for attaching / detaching a winding tube to / from a winding frame.

[0015]

According to the present invention, a connecting box is connected to an end of an operating shaft via a thrust bearing, a rack gear is attached to the connecting box, and a pinion meshing with the rack gear can be positioned. It is characterized by being driven by a motor.

[0016]

The main shaft, the operating shaft, etc. are driven in the same manner as in the conventional case.
In order to slide the operating shaft, the motor is operated and the connecting box is moved in the longitudinal direction of the operating shaft. Since the operating shaft and the connecting box are connected via the thrust bearing, the operating shaft also moves in the axial direction as the connecting box moves. This movement changes the outer diameter of the bobbin. The operating shaft also rotates as the main shaft rotates, but the connecting box does not rotate due to the presence of the thrust bearing.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. According to the present invention, the connection box 31 is connected to the end of the operation shaft 9 via the thrust bearing 32. The details are shown in FIG. The pair of fixed thrust pieces 33 are fixed to the connecting box 31, and the sliding thrust pieces 34 fixed to the operation shaft 9 are interposed between the fixed thrust pieces 33.
Is installed via a ball. Reference numeral 35 is a bearing stopper.

A rack gear 36 is attached to the connecting box 31 along the longitudinal direction of the operating shaft 9. The pinion 37 meshing with the rack gear 36 is a positionable motor 38 (for example, a pulse motor or a servo motor).
Is rotated by. The rack gear 36 has a fixed base 39.
It is connected to the rack gear 3 by the key 40.
Guide 6 slides.

As described above, the operation shaft 9 is also rotated by the rotation of the main shaft 1, but the connecting box 31 is not rotated by the presence of the thrust bearing 32.
To attach the winding tube 17 to the winding frame 16, the motor 3
8, the connection box 31 is moved to the right through the rack gear 36 and the like. As a result, the outer diameter of the winding frame 16 increases, and the winding frame 17 is pressed against the inner surface of the winding tube 17 to be integrated.

To remove the winding tube 17, the motor 38
The connecting box 31 is moved to the left by the driving of.
As a result, the outer diameter of the winding frame 16 is reduced, and the winding tube 17 can be removed. If the motor 38 having accurate positioning is used, the outer diameter of the winding frame 16 can be accurately changed.

[0021]

As described above in detail, according to the present invention, it is not necessary to provide both a mechanism for attaching and detaching a winding tube and a mechanism for removing the winding tube as in the conventional structure. In addition, the winding tube can be attached and detached only by rotating the motor, and the automation for that can be facilitated if necessary.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing the inside of the connection box of FIG.

FIG. 3 is a side view showing a relationship between a rack gear and a pinion.

FIG. 4 is a sectional view showing a part of a conventional configuration.

[Explanation of symbols]

 1 spindle 8 reel core 9 operation axis 12 movable link 16 reel 17 reel tube 31 connecting box 32 thrust bearing 36 rack gear 37 pinion 38 motor

Claims (1)

(57) [Scope of utility model registration request] 1. A main shaft that is rotationally driven, a movable link that rotates integrally with the main shaft, an outer diameter that is variable by driving the movable link, and a reel that is detachably attached to an inner surface of a winding tube.
In a winding tube drive device provided with an operation shaft for driving the movable link by sliding along an axial direction, a connection box is connected to an end of the operation shaft via a thrust bearing, and A winding tube drive device in which a rack gear is attached to a connecting box, and a pinion meshing with the rack gear is driven by a positionable motor.