JPH01193112A - Bevelling device - Google Patents

Abstract

PURPOSE:To surely maintain fastening conditions of a pipe without looseness of a vice by rotating a warm gear so as to rotate a warm wheel, and strongly rotating a guide plate so as to move vice in the diameter direction. CONSTITUTION:Since it is necessary to move a vice 1 to the inner diameter side when a pipe is held, a guide plate 3 is rotated such that the rotation thereof serves to move a pin 5 to the inner diameter side through a connection hole 4, and thereby a nut 8 of a warm gear 7 is rotated. A claw 2 is moved to the inner diameter direction through the pin 5 by fastening the nut 8 strongly to an extent, thereby the pipe is strongly fastened. When the vice 1 is forced to move in the outer diameter direction with the application of outer force to the pipe, and action for rotation the pin to move the vice 1 in the outer diameter direction is generated, however, there is no rotation of the warm gear 7 and the holding conditions are maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a beveling device for beveling or cutting a pipe.

``Prior Art'' A beveling device for bevelling or cutting a pipe must reliably grip the pipe and apply a cutting blade to the pipe.

For this reason, the beveling device is equipped with a vise that grips the pipe reliably and firmly, but it must be able to grip the pipe easily and release the grip easily.

"The problem that the invention seeks to solve."

Conventionally, a vise consisted of multiple tabs and was equipped with a screw to move the tabs toward the inner diameter, but in order to tighten the pipe, multiple screws had to be tightened, and this was done using multiple tabs. Doing so was troublesome because multiple screws had to be tightened evenly to secure the pipe to the shaft center.

In addition, if the screws were not tightened evenly, the pipes would not only be unevenly distributed but also come loose.

The present invention has been made in view of the above circumstances, and provides a beveling device that can easily tighten and remove a pipe, and can securely grip the pipe without loosening the tightening condition. The purpose is to

"Means for Solving the Problems" The present invention will be described based on an embodiment shown in the drawings, in which a ring-shaped guide plate through which a pipe is penetrated extends in the inner diameter direction to grip the pipe. Then, the figure is a longitudinal sectional view of the main part of the beveling device according to the present invention.

In the figure, the beveling device is equipped on a frame (not shown) so that three vices 1 are equally spaced in the circumferential direction and move in the inner diameter direction.

The vice 1 is provided with a claw 2 on the inner diameter side and is configured to grip a pipe (not shown).

Further, the vice 1 is connected to a connecting hole 4 of a guide plate 3 via a pin 4, and the connecting hole 3 is formed as a long hole inclined with respect to the circumferential direction.

Further, the guide plate 3 is provided with a worm wheel 6, and a worm gear 7 is meshed with the worm wheel 6.

The worm gear 7 is equipped with a nut 8 and is configured to be rotatable from the outside.

In such a configuration, the beveling device is configured to include a vice with a cutting blade (not shown), to move the pipe held by the vice 1 in the radial direction by moving the vice relative to the guide plate, and The problem is solved by providing the guide grate with a worm wheel and configuring the worm wheel to be rotated by a worm gear.

"Operation" By rotating the worm gear, the worm wheel rotates, and the worm wheel powerfully rotates the guide route, so the vice moves in the radial direction and firmly grips the pipe.

In a vise, the relationship between the worm gear and the worm wheel is such that when the worm gear rotates, the worm wheel rotates, but conversely, even if the worm gear receives rotation from the worm wheel, the worm gear does not rotate. .

Therefore, the tightening state can be reliably maintained without the vise loosening.

"Example" It is used for beveling or cutting by cutting.

To hold the pipe, connect the worm gear 7 with the nut 8.
By rotating and rotating the guide plate 3
rotates, the jar 5 is moved in the radial direction by the claw 2 connected to the connecting hole 4, and the vice 1 is moved in the radial direction.

When the pipe is gripped, the vice 1 needs to move inward, so the rotation of the guide plate 3 only needs to rotate the bottle 5 in a direction that moves the bottle 5 inward through the connecting hole 4, and the worm Rotate the nut 8 of the gear 7 appropriately.

When the pipe is to be gripped, if the nut 8 is tightened to some extent, the circumferential inclination of the connecting hole 4 causes the bottle 5 to move strongly toward the inner diameter, and the pipe can be strongly tightened.

Furthermore, when an external force is applied to the pipe and the vise 1 receives force in the radial direction, the inclination of the connecting hole 4 causes the bottle 5 to rotate the guide plate 3 in a direction that moves the vise 1 in the radial direction. occurs, but worm wheel 6
Due to the nature of the connection between the pipe and the worm gear 7, the worm gear 7 does not rotate and maintains its grip on the pipe.

That is, when the nut 8 is rotated, the vise 1 can be moved, but the vise 1 is moved by the worm gear 7 due to an external force or the like.
Even if an attempt is made to rotate the nut 8, due to its nature, the nut 8 will not rotate, and the vise 1 will not loosen due to external force.

Therefore, the clamped and gripped pipe does not come off, and the gripped state can be maintained.

"Effects of the Invention" According to the present invention, the pipe can be easily and evenly tightened and gripped, and the gripping state can be maintained reliably, so that beveling can be easily performed and work efficiency can be improved. is extremely large.

[Brief explanation of the drawing]

The figure is a longitudinal cross-sectional view of essential parts of a beveling device according to an embodiment of the present invention. 1...Vise, 2...Claw, 3...Guide plate, 4...Connecting hole, 5...Pin, 6
... Worm wheel, 7... Worm gear,
8...Natsuto.

Claims (1)

[Claims] A ring-shaped guide plate through which the pipe is passed is provided with a vice that extends in the inner radial direction to grip the pipe, and the vice is configured to move in the radial direction by moving relative to the guide plate, and the guide plate A bevel device comprising a worm wheel, the worm wheel being configured to be rotated by a worm gear.