JPH06126489A - Tube holding device - Google Patents

Abstract

PURPOSE:To simplify structure, to facilitate automation and to improve working effect by pressing the inner end of each pawl supporting body with a conical sliding body, which is provided freely movably in the center of a substrate, moving the supporting body in a radial direction and pressing to hold the inside of a tube with each pawl. CONSTITUTION:The plural pawl supporting bodies 25 on which the pawls 26 are projectively attached are provided freely movably in the radial direction from the center of the substrate. The inner end of each pawl supporting body 25 is pressed with the conical sliding body 20, which is provided freely movably in the center of the substrate 22, and each pawl supporting body 25 is moved in the radial direction. The inside of the tube 30 is pressed with each pawl 26, and the tube 30 is held on the rotary chuck of a tube cutter. Thus, the structure is made simple, and the movement of the sliding body 20 is easily automated by a motive power such as a motor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe holding device for holding a pipe on a rotary chuck of a pipe cutting machine.

[0002]

2. Description of the Related Art As a pipe holding device in a conventional pipe cutting machine, a chuck shown in FIG. 2 is used. In the figure, 1 is a chuck base, 2 is a bevel gear that is provided on the base 1 and is rotated by a handle 3, 4 is a scroll gear that is provided parallel to an end surface of the base 1 and rotates by meshing with the bevel gear 2, and 5 is a plurality. Each claw support is provided in the radial direction on the end surface of the base body 1 and moves in the radial direction by the rotation of the scroll gear 4. Reference numeral 6 is a claw body which is provided on the claw support 5 so as to project in a stepwise manner, and 7 is a pipe.

Then, after the center of the pipe 7 is aligned with the center of the base 1, the pipe 7 is moved to each claw 6 side,
The end surface of the pipe 7 is brought into contact with any step of each claw body 6.
Next, the handle 3 is manually rotated, the scroll gear 4 is rotated through the bevel gear 2, the claw support 5 is moved outward, and the inside of the step of the claw 6 comes into contact with the inner surface of the pipe 7, Hold the pipe 7. Next, the substrate 1 is rotated to rotate the pipe 7, and the pipe 7 is cut by the cutting torch.

[0004]

In the case of the conventional holding device, the structure is complicated because the bevel gear 2 and the scroll gear 4 are used, and the manual operation of the handle 3 requires labor and a long time. However, there is a problem that work efficiency is low. The present invention has been made in view of the above points, and an object thereof is to provide a pipe holding device having a simple structure and improving work efficiency.

[0005]

In order to solve the above-mentioned problems, a pipe holding device of the present invention comprises a substrate having pipe end surfaces arranged in parallel with each other, and a radial direction from the center of the substrate along the substrate. A plurality of claw supports freely provided, claws protruding from the claw supports and abutting the inner surface of the pipe, and inner ends of the claw supports that are provided at the center of the substrate so as to be retractable and retractable. The sliding member has a conical tip part that presses the parts to move the claw supports in the radial direction.

[0006]

In the pipe holding device of the present invention constructed as described above, a plurality of claw supports having projecting claws are provided so as to be movable in the radial direction from the center of the substrate and project at the center of the substrate. The retractable conical sliding body presses the inner end of each claw support to move each claw support in the radial direction, so each claw presses the inner surface of the pipe to hold the pipe. In addition, the structure is simple, and the sliding member can be easily moved in and out by the power of a motor or the like, and the working effect can be improved.

[0007]

EXAMPLE One example will be described with reference to FIG.
In the same figure, 8 is a base, 9 is a plurality of frames standing on the base 8, 10 is a drive shaft rotatably supported by the frame 9, 11 is fixed to the tip of the drive shaft 10 and rotates on the frame 9. Freely supported cylinder, 12 is drive shaft 10
A large drive gear fixed to the peripheral surface of the drive gear, 13 a drive motor installed on the base 8, 14 a drive small gear fixed to the rotary shaft of the drive motor 13, and 15 mounted on both gears 12 and 14. It is a drive chain.

Reference numeral 16 is a clutch motor supported by a frame 9 via a supporting rod 17, and 18 is a drive shaft 10 and a cylindrical body 1.
1 is a feed rod penetrating the bottom plate, 19 is a feed screw formed on the peripheral surface of the feed rod 18 in the tubular body 11, 20 is a sliding body having a conical tip, and is screwed to the feed screw 19. It moves in the cylindrical body 11 without rotating, and the tip portion is led out from the cylindrical body 11. Reference numeral 21 is an electromagnetic clutch provided between the tip of the rotating shaft of the clutch motor 16 and the base of the feed rod 18.

Reference numeral 22 denotes a disk-shaped substrate having a central portion fixedly attached to the tip of the cylindrical body 11, and 23 denotes a substrate 22 from the center of the substrate 22.
A plurality of sliding shafts provided movably in the radial direction along the axis, 24 are stroke bearings provided on the substrate 22 and supporting the inner and outer parts of the sliding axis 23, and 25 is the sliding axis 2
3 is a claw support fixed to 3, 3 is a plurality of claws projecting from the claw support 25, 27 is provided between the stroke bearing 24 and the claw support 25 on the outer side, and the slide shaft 23 is provided inside. Springs biased against the roller 28, roller bearings 28 provided on the inner end of the sliding shaft 23 and in contact with the sliding body 20, and 29 a substrate 2
2 is a cover that covers the central portion of the pipe 2, and 30 is a pipe whose end face is arranged parallel to the substrate 22.

Next, the pipe holding operation of the above apparatus will be described. When the center of the pipe 30 is aligned with the center of the substrate 22 and the end surface of the pipe 30 is in contact with each claw support 25, the electromagnetic clutch 21 is input by the holding operation.
Is activated to rotate the rotating shaft of the clutch motor 16 and the feed rod 18.
, And the feed rod 1 by the rotation of the clutch motor 16
By the rotation of 8, the sliding body 20 is led out to the center of the substrate 22.

By pulling out the sliding body 20, each sliding shaft 2 is connected via a roller bearing 28 which is in contact with the sliding body 20.
3 moves outward, each claw 26 moves outward via the claw support 25, the claw 26 inside the pipe 30 abuts the pipe 30, and the claw 26 pressed by the abutment pushes the pipe 30. Is retained. The electromagnetic clutch 21 is disengaged and the clutch motor 16 is stopped by the detection of the load applied by the claws 26 pressing the pipe 30.

Then, by driving the drive motor 13, the drive shaft 1 is driven through the small gear 14, the chain 15, and the large gear 12.
0 rotates, the substrate 22 rotates via the tubular body 11, the pipe 30 rotates, and the pipe 30 is cut by the cutting torch.

Next, the pipe 30 held by the substrate 22
The electromagnetic clutch 21 can be removed by inputting the removal operation.
Is operated, the sliding body 20 is retracted by the reverse rotation of the clutch motor 16, and the claw support 23 moves the base plate 22 by the spring 27.
Returning to the center side of the claw 26, the claw 26 separates from the inner surface of the pipe 30.

According to the above-described embodiment, the pipe 30 can be automatically held on the substrate 22 via the claws 26 and the like by inputting the holding operation, and the manual operation of the handle as in the conventional case is not required, and the labor is saved. It can be held in a short time without need. Although the electromagnetic clutch 21 and the clutch motor 16 are used in the embodiment, the feed rod 18 may be rotated by a manual operation with a handle.

[0015]

Since the present invention is configured as described above, it has the effects described above. In the pipe holding device of the present invention, a plurality of claw supports 25 having claws 26 projectingly provided are provided so as to be movable in the radial direction from the center of the substrate 22 and to be able to move in and out of the center of the substrate 22. The conical sliding body 20 presses the inner end portion of each claw support 25 to move each claw support 25 in the radial direction, so that each claw 26 presses the inner surface of the pipe 30 to hold the pipe 30. In addition, the structure is simple, and the sliding member 20 can be easily moved in and out by the power of a motor or the like, and the working efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a cutaway front view of an embodiment of the present invention.

FIG. 2 is a cut front view of a conventional example.

[Explanation of symbols]

 20 Sliding Body 22 Substrate 25 Claw Support 26 Claw 30 Pipe

Claims (1)

[Claims] 1. A substrate having pipe end surfaces arranged in parallel,
A plurality of claw supports provided movably in the radial direction along the substrate from the center of the substrate, claws protruding from each of the claw supports and abutting the inner surface of the pipe, and projecting at the center of the substrate. A pipe holding device, comprising: a slide body that is provided retractably and that presses an inner end portion of each of the pawl supports to move the pawl supports in the radial direction and has a conical tip.