KR101879997B1 - Pipe drawing angle correction device - Google Patents

Abstract

A disclosed technology relates to a pipe drawing angle correction device which is a device for drawing a pipe by fixing one end of the pipe by a jaw after swaging the one end of the pipe. The pipe drawing angle correction device comprises: a dice unit which sequentially reduces the diameter of the pipe when the pipe passes between a point where tongs moving backwards while holding one end of the swaged pipe are located and an insertion hole where drawing starts while the pipe is inserted, and reduces temperature by applying cooling oil to the outer surface of the pipe; and a rotating unit which is arranged to surround the die unit, compares the degree of parallelization of a cross section of the insertion hole with respect to the tongs by using a sensor, and adjusts an angle so that the pipe maintains straightness. Therefore, the present invention can reduce a process time and improve pipe productivity by performing calibration simultaneously with pipe drawing.

Description

[0001] PIPE DRAWING ANGLE CORRECTION DEVICE [0002]

The disclosed technique relates to a device for calibrating a pull angle to maintain straightness when pulling a pipe.

Drawing apparatus is a device that processes aluminum or carbon steel processed into bar shape by using machine to make thinner and more precise straight pipe. In this drawing process, most of the apparatuses stretch the bar with the force of the machine as described above to create the pipe of the desired shape. In this process, the pipe pulling portion is slightly biased toward one side The drawing can be performed. In this case, since the quality of the product is adversely affected, it is desirable to further perform a process of calibrating after drawing to maintain the straightness of the pipe. For example, it is possible to carry out a process of transferring the drawn pipe to the rollers and rolling the rollers to calibrate the curves.

Meanwhile, as described above, drawing and calibration require additional space for performing calibration as well as additional time. In other words, in order to increase the productivity of finished pipes through drawing and calibrating, there is a disadvantage that it is possible to work only in a place where a large site is secured so that the two processes can be processed together. Further, since the process of calibrating after the drawing is further performed, the time required for the process is lengthened, resulting in a problem of adversely affecting the productivity. In one embodiment, referring to Korean Patent Publication No. 1996-0038210 (entitled Pipe Calibrator of a Pipe Making Machine), at least two pairs of vertically opposed rollers are installed to calibrate a formed pipe, Is disclosed. However, as described above, since the process of further calibrating after drawing out the pipe must be performed, the time required for the entire process is increased, which results in a problem that the productivity is lowered.

The disclosed technique is to provide a device for calibrating the angle of a point where it is pulled out to maintain straightness upon pulling the pipe.

According to a first aspect of the present invention, there is provided an apparatus for pulling a pipe by swaging one end of a pipe with a jaw, the apparatus comprising: And a cooler for applying a coolant to the outer surface of the pipe to lower the temperature when the pipe passes through between a point where the pipe is inserted and a hole through which the pipe is inserted, And a pivoting portion arranged to surround the dice and using a sensor to compare the degree of parallelism with the end surface of the insertion port and the pivot and adjust the angle so that the pipe maintains the straightness. .

Embodiments of the disclosed technique may have effects that include the following advantages. It should be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, since the embodiments of the disclosed technology are not meant to include all such embodiments.

According to one embodiment of the disclosed technology, the pipe pulling angle correcting device has the effect of shortening the time required for the process by correcting the straightness of the pipe at the time of drawing.

In addition, since a separate space for performing calibration is not required, there is an effect of preventing spatial restriction in installing the drawing apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side view of a pipe exit angle correcting device according to an embodiment of the disclosed technique.
2 is a perspective view of a combined plurality of dice in accordance with one embodiment of the disclosed technique.
Figure 3 is a perspective view of a plurality of dice before being joined in accordance with one embodiment of the disclosed technique.
4 is a diagram illustrating an aspect of a first die in accordance with one embodiment of the disclosed technique.
5 is a view of another side of a first die according to an embodiment of the disclosed technique.
6 is a diagram illustrating an aspect of a second die according to one embodiment of the disclosed technique.
7 is a diagram illustrating another side of a second die according to one embodiment of the disclosed technique.
8 is a diagram illustrating an aspect of a third die according to one embodiment of the disclosed technique.
9 is a view showing another side of a third die according to an embodiment of the disclosed technique.
10 is a perspective view of a dice housing according to one embodiment of the disclosed technique.
11 is a view of a turning part according to an embodiment of the disclosed technique.
12 is a view illustrating connecting the pivoting portion to the drawing device in accordance with one embodiment of the disclosed technique.
Figure 13 is a view illustrating adjusting the angle of the swivel portion according to one embodiment of the disclosed technique.
FIG. 14 is a side view of a drawing unit and a pivoting unit connected to a drawing apparatus according to an embodiment of the disclosed technique.
15 is a view showing another side of the drawing unit and the pivoting unit connected to the drawing apparatus according to an embodiment of the disclosed technology.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, A, B, etc., may be used to describe various components, but the components are not limited by the terms, but may be used to distinguish one component from another . For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that the singular < RTI ID = 0.0 > terms < / RTI > used herein should be interpreted to include a plurality of representations unless the context clearly dictates otherwise. And "comprises ", when used in this specification, specify the presence of stated features, numbers, steps, operations, elements, parts, or combinations thereof, Or combinations thereof, as a matter of course.

Before describing the drawings in detail, it is to be clarified that the division of constituent parts in this specification is merely a division by main functions of each constituent part. That is, two or more constituent parts to be described below may be combined into one constituent part, or one constituent part may be divided into two or more functions according to functions that are more subdivided.

In addition, each of the constituent units described below may additionally perform some or all of the functions of other constituent units in addition to the main functions of the constituent units themselves, and that some of the main functions, And may be carried out in a dedicated manner. Accordingly, the presence or absence of each component described in this specification should be interpreted as a function.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side view of a pipe exit angle correcting device according to an embodiment of the disclosed technique. Referring to FIG. 1, the pipe pull angle correcting apparatus 100 includes a die 110 and a turning unit 120.

The pipe pulling angle correcting apparatus 100 is connected to a device for pulling out the pipe by fixing one end of the pipe with a gripper 101 after swaging. In one embodiment, as shown in FIG. 1, the pipe 100 is moved upward at a point where the clamp 101 is positioned, so that the orthodontic appliance 100 is positioned at a position where the dice 110 and the pivot 120 are located It can be connected to the device at the bottom. The orthodontic appliance 100 is a separate device connected to the pulling device so that the angle of pulling out can be adjusted so that the straightness of the pipe is not damaged when the pipe passes through the insertion port 102 and the pulling process of reducing the outer diameter is performed. The process is carried out using a conventional drawing apparatus.

The dice section 110 includes a plurality of dice. In one embodiment, it may include a first die 111, a second die 112, and a third die 113 as shown in FIG. The dice are inserted into the die housing 114 in a state where they are connected to each other. The dies 111, 112, and 113 are disposed in the housing in the order shown in FIG. 2, and the pipe is inserted into the second die 112 and exits through the third die 113. That is, one end of the swaged pipe is inserted into the right side of the second die 112 as shown in FIG. 2, and is discharged through the left side surface of the third die 113, The tongue 101 retracts backward while holding one end of the swaged pipe, and the pipe passes through the dies. At this time, the pipe can lower the surface temperature according to the cooling oil flowing through the inlet 111a provided in the first die 111.

Referring to FIG. 3, each of the dies has a plurality of grooves and slopes so that the cooling oil can efficiently cool the pipe while moving inside the die. The cooling oil flows into the die through the inlet 111a shown in FIG. 10, and there is a minute gap between the housing 114 and the dies 111, 112 and 113, so that the cooling oil can flow into the gap. At this time, it is possible to induce a direction in which the cooling oil flows along a plurality of grooves or slopes formed at the connection points of the dice. The form of each dice will be described in detail with reference to Figs. 4 to 9 below.

First, referring to FIG. 4, the first die 111 is provided with a discharge inlet 111j through which the introduced cooling oil escapes. The cooling oil flows through the inlet 111a shown in Fig. 10 using the pressure of the motor. 4, a ring-shaped wall is formed inside the die at a side where the first die 111 is in contact with the second die 112, so that a predetermined space in which the cooling oil can stay and a plurality Grooves 111b, 111c, 111d, 111e and 111f are provided. The cooling oil flows into the space of the first die 111 through the grooves 111b, 111c, 111d, 111e and 111f when the cooling oil flows into the space through the inlet 111a. And some coolant may pass to the second die 112 along the surface of the wall. This allows the outer surface of the pipe to be cooled primarily. Then, the used cooling oil flows out through the discharge port 111j. The first dies 111 serve as a kind of washer, and serve to distribute cooling oil between the second dies 112 and the third dies 113, .

5 is a side view of the first die 111 in contact with the third die 113. As shown in FIG. In the side surface shown in FIG. 5, the moving tools 111g, 111g, and 111i are provided. Referring to FIG. 4, it is assumed that the first die 111 has a space in which the cooling oil can stay, and the moving tools 111g, 111g, and 111i are formed at a position slightly higher than the space. That is, when the cooling oil sufficiently flows into the space, the cooling oil is moved to the third dies through the moving ports 111g, 111g, and 111i to maximize the cooling efficiency. That is, since the cooling efficiency increases as the area of the pipe contacting the cooling oil increases, the cooling oil flowing through the inlet 111a is divided into the second and third dies 112 and 113 to cool the pipe with a wider area .

Figs. 6 and 7 are views of one side of the second die 112. Fig. 6 is a side in which one end of the pipe enters, and a side shown in Fig. 7 is a portion connected to a side of the first die 111 shown in Fig. Here, cooling oil does not flow out from the side surface shown in Fig. However, cooling oil can be applied to the outer surface of the pipe into which the inner structure of the second die is inserted. For example, referring to FIG. 7, when cooling oil flows into the second die along the inclined surface 112a, the cooling oil is elevated by a certain amount and then flows into the die by the inclination, so that it can meet with the pipe along the inclined surface 112b. Thus, like the first die 111, the second die 112 can also cool the outer surface of the pipe.

Figs. 8 and 9 are views showing both sides of the third die 113. Fig. 8 is a side connected to the side of the first die 111 shown in Fig. 5, and a side shown in Fig. 9 is a side from which the pipe comes out. The moving tools 113a, 113b and 113c shown in FIG. 8 are holes which are connected to the moving tools 111g, 111h and 111i of the first dice 111 and are supplied with cooling oil from the moving tools 111g, 111h and 111i It is a receiving hole. The moving tools 113a, 113b, and 113c flow cooling oil into the die along the inclined surface 113d as shown in FIG. 9 to cool the pipe by flowing the received cooling oil into the third die. Therefore, it is possible to lower the surface temperature of the pipe by contacting the coolant when the pipe passes.

Meanwhile, the plurality of dice 111, 112, and 113 described above are mounted on the housing 114. As shown in FIG. 10, a housing 114 is connected to a component connected to a drawing device line. Dice 111, 112, and 113 may be mounted in the housing 114. The dice portion 110 has a shape that gradually narrows in order to reduce the diameter of the pipe during the drawing process. The dice portion 110 has a shape in which the gripping portion of the swaging pipe is positioned and the insertion opening 102, Respectively.

Meanwhile, the inlet port 111a shown in FIG. 10 can be connected to the motor through the cooling fluid pipe so that the cooling fluid can be continuously introduced from the motor disposed outside. In one embodiment, the motor is operated to pump the coolant and continuously flow the coolant into the inlet 111a through the pipe at a constant capacity. Of course, it is also possible to use not only the motor but also other devices capable of constantly introducing cooling oil. For example, the cooling oil may be introduced using a cylinder or a pump capable of generating the same pressure continuously.

Referring to FIG. 11, the turning unit 120 is formed as a single piece with the insertion port 102 through which the pipe first enters. The pivot portion 120 is formed so that the body can be pivoted vertically and horizontally so that the center of the insertion port 102 where the punching starts when the pipe is pulled out and the center of the pipe fixed to the pliers are aligned with each other. For example, it can be freely rotated in the 360 degree direction as the joint of the spherical joint doll.

Referring to FIG. 12, the rotary unit 120 is inserted into the housing 114 on which the dies 111, 112, and 113 are mounted. That is, the dice unit 110 is fixed to the rotary unit 120 and is formed as a single part. A plurality of dice 111, 112, and 113 are disposed in the body of the rotary unit 120, May be coupled in a surrounding manner. As shown in FIG. 13, it is possible to rotate by a certain angle in the up-and-down direction, the right-left direction, or the 360-degree direction.

Wherein the swivel portion 120 includes a plurality of sensors that compare whether the center of the insertion port and the center of the fixed pipe are parallel to each other. And it is possible to compare whether the center of the insertion port and the center of the fixed pipe match with each other using the sensor. In one embodiment, the sensors are disposed at the upper, lower, right, and left points around the insertion port 102, and a light receiving unit is disposed at a point corresponding to the insertion port 102 to sense how much light is irradiated from the sensor in the light receiving unit The parallelism can be measured. Consequently, as shown in FIG. 13, the pivoting unit 120 proceeds to draw in a state in which a certain angle is moved in a specific direction.

The swivel unit 120 may further include a driving unit for moving the body by a corresponding angle according to a result of comparing the center of the insertion port 102 and the center of the fixed pipe. For example, the driving unit is a motor that operates under the control of a kind of MCU. When the degree of parallelism of the swing unit 120 is calculated through the MCU, the swing unit 120 can be rotated by a value corresponding to the calculated degree. When the body of the rotary part 120 is rotated, the dies mounted on the inside of the rotary part 120 are also rotated in the same direction. When the drawing is performed in this state, the pipe is bent in a specific direction, .

14 and 15, when the dice unit 110 and the swing unit 120 are coupled, they are fixed to one end of the drawing apparatus. The side surface shown in FIG. 14 is a side to which the pipe is inserted, and a pipe swaged at one end is inserted through the insertion hole 102. Then, as shown in Fig. 15, the tongue 101 disposed on the opposite side fixes the swaged portion, and retracts back to perform drawing. At this time, as described above, the outer diameter of the pipe becomes narrower than before the drawing through the die portion 111, and the pipe drawn out while the swivel portion 120 operates together can be pulled straightly straight. Therefore, it is possible to produce a pipe that guarantees straightness at the time of one drawing without requiring a separate calibrating device or process.

Although the pipe drawing angle correcting apparatus according to an embodiment of the disclosed technology has been described with reference to the embodiments shown in the drawings for the sake of understanding, it is merely an example, and it is apparent to those skilled in the art that various modifications And other equivalent embodiments are possible. Accordingly, the true scope of protection of the disclosed technology should be determined by the appended claims.

100: Pipe pull angle correcting device 101: Tongs
102: insertion port 110:
111: first die 111a: inlet
111b to f: groove 111g to i:
111j: outlet 112: second die
112a: an inclined surface 112b: an inclined surface
113: Third Dice 114: Housing
113a to 113c: moving part 113d: inclined surface
120:

Claims (8)

An apparatus for drawing a pipe by swaging one end of the pipe with a jaw,
A plurality of dice disposed inside the pipe when the pipe passes through between a point where the clamping member holding one end of the swaged pipe and a retracting point of the swaging pipe are positioned and a hole through which the pipe is drawn, A die for sequentially decreasing the diameter of the pipe by using dies and applying cooling oil to the outer surface of the pipe to lower the temperature; And
And a pivoting part arranged to surround the dice and comparing the degree of parallelism with the end surface of the insertion port using a sensor and adjusting the angle so that the pipe maintains straightness,
Wherein the dice include a housing enclosing the plurality of dice, wherein the plurality of dice are gradually narrowed in an inner diameter in a direction in which the pipes exit,
Wherein the plurality of dice are first, second and third dice,
Wherein the first die is disposed between the second and third dies and receives the cooling oil through an inlet provided at an upper portion thereof and receives the cooling oil through the plurality of grooves provided in the inner diameter, 3 dice,
The second and third dies are provided with a ring-shaped groove in which a predetermined space is formed in which the cooling oil can flow and stay, and the cooling oil flows into the inner diameter from the space and is discharged,
Wherein part of the cooling oil discharged to the inner diameter is applied to the outer surface of the pipe and the rest is discharged to the outside. The method according to claim 1,
Wherein the coolant flows into a plurality of dies included in the die unit according to a pressure generated in a motor connected to the apparatus. delete delete The method according to claim 1,
Wherein the pivoting portion includes a plurality of sensors for comparing the degree of parallelism. 6. The apparatus of claim 5,
Wherein the light extraction unit is disposed around the end face of the insertion port and irradiates light to the light receiving unit disposed on the opposite side to sense whether the insertion port and the clamp are parallel. The method according to claim 1,
Wherein the pivoting portion rotates the insertion port in the up, down, left, and right directions by a corresponding angle according to a result of comparing the degree of parallelism. 8. The apparatus of claim 7, wherein the pivoting portion
And a driving unit for adjusting the direction of the insertion port according to a result of comparing the degree of parallelism.

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