JPH07281755A - Holding device for columnar object - Google Patents

Abstract

PURPOSE:To shift a columnar object toward the flange part side of a tapered roller and to rotate it in a positioned state by parallelly and horizontally arranging axial centers of a pair of tapered rollers each formed with the flange part at the terminal part on the small diameter side, and driving them in the same direction. CONSTITUTION:A pair of tapered rollers 10 are arranged freely rotatably in the state that their axial centers are horizontal and almost parallel with each other. In each of tapered rollers 10, the outer diameter dimension is continuously reduced along its axial center, and a flange part 10a is formed at the terminal part on the smaller outer diameter side. A columnar object 2 is placed on a pair of these tapered rollers 10 and when a pair of tapered rollers 10 are rotated in the same direction, the columnar object 2 is driven to be rotated by frictional force with the tapered rollers 10. Since the circumferential velocity of the tapered roller 10 on the larger diameter side is higher than that on the smaller diameter side, trust is exerted on the columnar object 2 in a direction shown by an arrow P and that object 2 is moved. Then, since it is stopped by the flange parts 10a, the columnar object 2 is rotated in contact with the flange parts 10a on a pair of tapered rollers 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a columnar holding device, which is capable of holding a columnar body while rotating it.

[0002]

2. Description of the Related Art In the physical distribution industry, the state of the outer surface of a cylindrical body having a cylindrical shape and the characters and marks printed on the outer surface are sometimes read by an optical machine or photographed for observation. In such a case, a columnar holding device is used because it is carried out while rotating the columnar body or is held at a fixed position by a temporary stop.

To concretely observe a cylindrical body, FIGS.
The columnar holding device shown in is used. In FIG. 3, the cylindrical body 2 is placed on a pair of rollers 1a and 1b that rotate in the same direction, and guide rods 3 are arranged near both ends of the rollers 1a and 1b, respectively, to move the rotating cylindrical body 2 in the axial direction. It is restrained by the guide rod 3. FIG. 4 shows the positioning means 5 on the rotary table 4 which rotates about the vertical axis.
The columnar body 2 is fixed by means of, and the columnar body 2 is rotated together with the turntable 4. In FIG. 5, the columnar body 2 is gripped by the claw 7 provided on the rotary flange 6 which rotates about an axis extending in the horizontal direction, and the rotary body 2 is rotated together with the rotary flange 6. By using these columnar body holding devices, the columnar body 2 is rotated or stopped to observe the end surface and outer peripheral surface of the columnar body.

[0004]

However, in the structure shown in FIG. 3, the position of the guide rod must be changed when the length of the cylinder changes, and in the structure shown in FIGS. When the outer diameter of the body changes, the position of the positioning means or the claw must be changed. In other words, it is troublesome that the same holding device for a cylindrical body cannot handle it unless some work is performed on the cylindrical body having different lengths and outer diameters.

Therefore, an object of the present invention is to provide a columnar holding device that solves the above problems.

[0006]

The structure of the present invention for attaining such an object is such that an outer diameter dimension is reduced along the length direction and a collar portion is formed at an end portion having a smaller outer diameter dimension. The pair of taper rollers are arranged horizontally long so that the shaft centers of the taper rollers are substantially parallel to each other so that the collar portions face the same direction, and a driving means for driving the respective taper rollers in the same direction is provided. Alternatively, the taper rollers are arranged long in the horizontal direction such that the respective collar portions face the opposite directions with the axial centers of the taper rollers being substantially parallel to each other, and the respective taper rollers are arranged. It is characterized in that driving means for respectively driving in the same direction are provided.

[0007]

In the columnar holder according to the first aspect of the present invention, when the pair of taper rollers are rotated in the same direction and the columnar body is placed thereon, the columnar body moves to the small diameter portion side and is axially moved by the flange portion. It stops rotating and rotates while being positioned.

In the columnar holding device according to the second aspect of the present invention, by changing the rotation direction of the pair of rollers that rotate in the same direction, the taper roller is moved to one side flange portion or the other side flange portion, and the flange portion is moved. By this, the movement in the axial direction is stopped, and the shaft rotates while being positioned.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

(A) First Embodiment FIG. 1 shows the configuration of a first embodiment of a columnar holding device according to the present invention. As shown in the figure, a pair of taper rollers 10 are provided rotatably long in the horizontal direction with their axes being substantially parallel to each other. The outer diameter of each taper roller 10 is gradually reduced along the axis thereof, and a flange portion 10a is formed at the end of the smaller outer diameter. In order to drive these taper rollers 10 to rotate in the same direction, an output shaft of a motor is interlockingly connected to the taper roller 10 as a driving means (not shown).

When the columnar body 2 is placed on the pair of taper rollers 10 and the pair of taper rollers 10 are rotated in the same direction as shown by the arrow in the figure, the columnar body 2 is moved in the direction of the arrow due to friction between the pair of taper rollers 10. Follows to rotate. Since the peripheral speed, which is the speed of the outer peripheral surface, of the taper roller 10 on the large diameter side having a large outer diameter is larger than that on the small diameter side, a thrust force is generated in the columnar body 2 in a direction indicated by an arrow P in FIG. ,Moving. Since it is stopped by the collar portion 10a, the columnar body 2 rotates at that position while contacting the collar portion 10a on the pair of taper rollers 10. Further, by stopping the rotation of the motor, the rotation of the columnar body 2 stops at that position.

(B) Second Embodiment Next, the structure of a second embodiment of the columnar holding device according to the present invention will be described. As shown in FIG. 2, in the present embodiment, the taper roller 10 used in the first embodiment is such that the end portions where the flange portions 10a are formed are directed in mutually opposite directions. This is the same as in the first embodiment.

In the apparatus for holding a cylindrical body having such a structure, first, as shown in FIG. 2 (a), when the pair of taper rollers 10 are rotated counterclockwise, the cylindrical body 2 rotates in the clockwise direction while rotating in the clockwise direction. Receive the thrust of. Therefore, the columnar body 2 moves to the left and rotates while contacting the collar portion 10a.

On the other hand, as shown in FIG. 2B, when the pair of taper rollers 10 are rotated clockwise, the columnar body 2 receives a thrust in the direction of arrow R while rotating counterclockwise.
Therefore, the columnar body 2 moves to the right and rotates while contacting the collar portion 10a.

That is, by changing the rotating direction of the taper roller 10, the positioning of the cylindrical body 2 in the length direction of the taper roller 10 can be set to either one end side or the other end side of the taper roller 10. Cylinder 2
The positioning of the taper roller 10 in the length direction with the rotation stopped is the same as the position when the rotating body 2 is rotating.

[0016]

As is apparent from the above description, claim 1
According to the columnar holding device by the above, since the pair of taper rollers having the collar portion in the small diameter portion are provided so that the collar portions face the same direction, the taper roller is not required to be gripped or provided with the guide rod. It is possible to rotate the columnar body in a state where the columnar body is positioned by being pushed toward the flange portion side. Also,
Even cylindrical bodies having different lengths and outer diameters can be positioned and rotated without adding any hand to the cylindrical body holding device. Further, since the columnar holding device is composed of only a pair of taper rollers, the structure is simple and the manufacturing cost is low.

According to the columnar holding device of the second aspect, since the pair of taper rollers are arranged so that the flange portions face the mutually opposite directions, the two taper rollers are rotated in one direction or the other direction. As a result, the columnar body can be positioned by being biased to either one side or the other side of the taper roller.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a columnar holding device according to the present invention.

2A and 2B relate to Example 2 of a holding device for a cylindrical body according to the present invention, FIG. 2A is a perspective view when the cylindrical body is rotated clockwise, and FIG. 2B is a case where the cylindrical body is rotated counterclockwise. Perspective view.

3A and 3B relate to a conventional holding device for a cylindrical body, in which FIG. 3A is a front view and FIG. 3B is a right side view.

FIG. 4 is a perspective view showing a conventional columnar holding device.

FIG. 5 is a perspective view showing a conventional columnar holding device.

[Explanation of symbols]

 2 ... Cylindrical body 10 ... Tapered roller 10a ... Collar part

Claims (2)

[Claims] 1. A pair of taper rollers each having a smaller outer diameter along the length direction and a flange portion formed at the end of the smaller outer diameter, in which the axial centers of the taper rollers are substantially parallel to each other. Then, the columnar holding device is characterized in that the collar portions are arranged horizontally long so as to face the same direction, and drive means for driving the respective taper rollers in the same direction are provided. 2. The taper rollers are arranged long in the horizontal direction such that the respective collar portions face the opposite directions with the shaft centers of the taper rollers being substantially parallel to each other, and the respective taper rollers are arranged in the same direction. A holding device for a cylindrical body, characterized in that it is provided with a drive means for driving to.