KR101494133B1 - Flaring device using daul forming pin - Google Patents

Abstract

More particularly, the present invention relates to a flare processing apparatus for performing a flange processing on a pipe. More specifically, the present invention relates to a flare processing apparatus, Device.
The present invention relates to a flare processing apparatus for forming a flange at an end of a pipe, comprising: a fixing jig having an inlet hole into which a pipe to be processed is drawn and fixing the inlet pipe; A pair of forming pins contacting the inner surface of the pipe; A link mechanism for maintaining the pair of forming pins at an angle symmetrical to a position symmetrical with respect to the central axis of the pipe; A rotating shaft to which the link mechanism is attached, the link mechanism being rotatable about the same axis as the pipe; And driving means for rotating the rotating shaft.

Description

TECHNICAL FIELD [0001] The present invention relates to a dual pin flare processing apparatus,

[0001] The present invention relates to a flare processing apparatus for flanging a pipe, and more particularly, to a flare processing apparatus in which two forming pins are arranged symmetrically with respect to a rotation axis, To a pin flare processing apparatus.

In order to connect the pipes to each other, a flange is formed at the end of the pipe, and the flange is connected with the fastening member.

In recent years, the joint joint has been developed in various forms in terms of performance and convenience in accordance with the trend of non-welded piping. In particular, a self flange joint is formed by directly machining the pipe end of the pipe into a flange shape, And is fastened by using a member, which is excellent in sealing performance and dimensional accuracy, and is attracting attention as a method that combines convenience of construction.

A related prior art is Korean Registered Patent No. 10-1282385 (registered on June 28, 2013).

An object of the present invention is to provide a flare processing apparatus in which workability is improved by arranging two forming pins symmetrically around a rotation axis.

It is another object of the present invention to provide a flare processing apparatus capable of heating a pipe end to be processed.

In order to accomplish the above object, the present invention provides a flare processing apparatus for forming a flange at a pipe end, comprising: a fixing jig having an inlet hole into which a pipe to be processed is drawn, A pair of forming pins contacting the inner surface of the pipe; A link mechanism for maintaining the pair of forming pins at an angle symmetrical to a position symmetrical with respect to the central axis of the pipe; A rotating shaft to which the link mechanism is attached, the link mechanism being rotatable about the same axis as the pipe; And driving means for rotating the rotating shaft.

The fixing jig may include induction heating means for heating the pipe end.

Further, it is preferable that the rotation axis is adjustable in length.

The link mechanism includes a pair of slider plates slidably moved to the left and right sides, a guide groove formed in an arc shape on the slider plate, one side fixed to the hinge axis and the other side connected to an operation shaft inserted in the guide groove And an angle adjusting frame having a horizontally elongated hole in which the actuating shaft is restrained, the gap between the forming pins being adjusted by the movement of the slider plate, It is preferable that a pair of forming pins are adjusted at the same angle in the forward and backward directions of the front and rear sides,

And a front and rear driving means for driving the angle adjusting frame in forward and backward directions. The pressure detecting sensor senses a pressure applied to the forming pin. The pressure detecting sensor receives the pressure of the pressure detecting sensor, It is more preferable to include a control unit for controlling.

In the dual pin flare processing apparatus according to the present invention, the processing time is shortened by performing the expansion processing using the two forming pins.

In addition, the dual pin flare processing apparatus according to the present invention allows the two forming pins to maintain a symmetrical state about the rotation axis, so that eccentricity does not occur even when the position of the forming pin is changed, thereby improving the durability of the equipment .

In addition, the dual pin flare processing apparatus according to the present invention is capable of heating a pipe end to be expanded by induction heating so that the pipe end can maintain a constant temperature during the pipe expansion process, thereby improving the workability.

1 is a view showing a dual pin flare processing apparatus according to the present invention.
FIGS. 2 and 3 are diagrams showing a forming pin interval adjusting operation of the link mechanism according to the present invention;
Figs. 4 and 5 are diagrams showing the operation of adjusting the forming pin angle of the link mechanism according to the present invention. Fig.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall appropriately define the concept of the term in order to best explain its invention It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

1 is a block diagram of a dual pin flare processing apparatus according to the present invention.

The dual pin flare processing apparatus 100 according to the present invention includes a frame 110 and an inlet hole connected to the frame 110 to receive the pipe to be processed 10, A pair of forming pins 130 contacting the inner surface of the pipe 10 and a pair of forming pins 130 contacting the inner surface of the pipe 10, And a link mechanism (140) attached to the link mechanism (140), wherein the link mechanism (140) is rotatable about the axis of rotation 150), and driving means (160) for rotating the rotating plate.

The forming pin 10 is fixed to the fixing jig 120 and then the forming pin 130 is moved to come into contact with the inner surface of the pipe 10. When the driving means 160 is operated in this state, ) Presses the end of the machining pipe 10 to form a flange.

Conventionally, in order to improve the workability, the flare processing is performed after heating the target pipe 10 to a predetermined temperature. However, the present invention provides a structure that allows the target pipe 10 to be heated even during flare processing .

To this end, the present invention is characterized in that the fixing jig 120 is provided with induction heating means. The pipe end is fixed to the stationary jig 120, and the stationary jig 120 near the pipe end is provided with induction heating means, so that the pipe end can be processed by using the electromagnetic induction phenomenon. Since the pipe does not rotate during machining, the pipe end of the area affected by the electromagnetic field can be stably heated.

It is preferable that the fixing jig 120 is detachably attached to the frame 110. The dual pin flare processing apparatus according to the present invention is capable of adjusting the spacing of a pair of forming pins by means of the link mechanism 140 so that flare processing of pipes of various diameters can be performed Can be performed.

For this purpose, the fixing jig 120 is preferably adapted to be removably attached to the frame 110, since the fixing jig 120 has to be replaced to match the diameter of the pipe to be processed.

Further, it is preferable that the rotation axis 150 is formed to be adjustable in length.

When the length of the rotary shaft 150 is adjusted, the distance between the forming pin 130 and the pipe end is adjusted. So that the forming pin 130 is retracted from the pipe end so as not to interfere with the pipe at the time of pipe mounting, and then the forming pin 130 can be moved to the machining position after pipe fitting is completed. This movement also facilitates the pipe separating operation after machining.

FIGS. 2 and 3 are views showing a forming pin interval adjusting operation of the link mechanism according to the present invention, and FIGS. 4 and 5 are views showing a forming pin angle adjusting operation of the link mechanism according to the present invention.

2 and 3, the pair of forming pins are fixed to different slider plates 141, and the slider plate 141 is engaged with the pinion gear 141a in opposite directions to each other . The pinion gear 141a is formed so as to have the same rotation center as the rotation center of the rotation shaft 150. [

At this time, the pair of forming pins 130 coupled to the slider plate 141 are disposed at positions symmetrical with respect to the rotational center of the rotating shaft 150.

4 and 5, the slider plate 141 is provided with a side plate 142 having arc-shaped guide grooves 142a.

Further, the forming pin 130 is provided on the pin plate 143 rotatably connected to the slider plate 141.

The pin plate 143 has a hinge shaft 144 connected to the side plate 142 and an operating shaft 145 protruding through the guide groove 142a and moving along the guide groove 142a.

So that the angle of the forming pin 130 with respect to the pipe end can be adjusted according to the position of the operation shaft 145 in the guide groove 142.

The actuating shaft 145 is constrained to the angle adjusting frame 146 having the horizontal elongated holes 146 so that the pair of forming pins 130 are adjusted to the same angle.

This structure allows the operation shaft 145 to move on the guide groove 142a due to the forward and backward movement of the angle adjusting frame 146. As a result, by controlling the forward and backward movement of the angle adjusting frame 146, 130 can be adjusted.

In addition, since the forming pins 130 on both sides are constrained by the same angle adjusting frame 146, both sides of the forming pin 130 can always maintain a symmetrical position with respect to the rotating shaft 150. [

Further, the present invention may further include a forward / backward driving means 147 for driving the angle adjusting frame back and forth. The forward / backward driving means 147 preferably uses a hydraulic cylinder, an electric cylinder, or the like, which can be variably controlled in length by control.

The control unit may further include a pressure sensor for sensing a pressure applied to the forming pin and a control unit for receiving the pressure of the pressure sensor and controlling the forward and backward driving unit 147. According to the detection of the pressure sensor, The angle of the pin can be adjusted automatically.

In this case, if the pressure value detected by the pressure sensor is less than a predetermined value, the angle adjusting frame may be advanced to increase the sensed pressure value of the pressure sensor. This type of control gradually reduces the pressure exerted on the forming pin as the pipe is being machined, and progressively advances the machining.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

110: frame
120: Fixing jig
130: forming pin
140: Link mechanism
141: Slider plate
142: side plate
142a: Guide groove
143: Pin plate
144: Hinge shaft
145: Operation axis
146: Angle adjustment frame
147: Forward and backward movement
150:
160: Driving means

Claims (7)

A flare processing apparatus for forming a flange at a pipe end,
A fixing jig having an inlet hole into which a pipe to be processed is inserted and having an induction heating means for fixing the drawn pipe and heating the pipe end;
A pair of forming pins contacting the inner surface of the pipe;
A link mechanism for maintaining the pair of forming pins at an angle symmetrical to a position symmetrical with respect to the central axis of the pipe;
A rotation shaft to which the link mechanism is attached, the link mechanism being adjustable in length so as to be rotatable about the same axis as the pipe;
Driving means for rotating the rotating shaft;
A pressure sensor for sensing a pressure applied to the forming pin; And
And a controller for receiving the pressure of the pressure sensor and controlling the forward and backward driving means,
Wherein the link mechanism includes a pinion gear having a rotation center identical to the rotation center of the rotary shaft, a pair of slider plates formed to engage with each other in opposite directions through the pinion gear and slidably move to the left and right sides, A pin plate having one end fixed to the hinge shaft and the other end connected to an actuating shaft inserted in the guide groove and rotatably connected to the forming pin; Wherein the distance between the forming pins is adjusted by the movement of the slider plate, and a pair of forming pins are formed in the forward and backward directions of the angle adjusting frame, To be adjusted at the same angle,
Wherein the controller controls the forward and backward driving means to advance when the pressure sensed by the pressure sensing sensor becomes a predetermined value or less. delete delete delete delete delete delete

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