WO2024049123A1 - Hydraulic branch pipe forming device - Google Patents

Abstract

The purpose of the present invention is to provide a hydraulic branch pipe forming device which can continuously and precisely form a plurality of branch pipes with respect to one target pipe. To achieve the above-described purpose, a hydraulic branch pipe forming device for forming a branch pipe in a pipe according to the present invention comprises: a base for supporting the structure of the whole device; a pipe driving unit coupled to the upper surface of the base to be capable of being transferred in the longitudinal direction, coupled to one surface of a molding pipe to rotate the same, and supporting the other surface thereof; a molding unit which has one end fixed to the upper surface of the base and has the other end extending to press a long hole formed in the pipe by hydraulic pressure inside the molding pipe, thereby forming a branch pipe; a processing unit which is fixed to one surface of the base and interlocks with the pipe driving unit to form a long hole in the molding pipe and processes the outer surface of the branch pipe; and a control unit for controlling the whole device.

Description

Hydraulic branch pipe forming device

The present invention relates to a hydraulic branch pipe forming device, and more specifically, to a hydraulic branch pipe forming device for forming a plurality of branch pipes in a metal pipe using hydraulic pressure.

In general, piping serves to transport internal fluids and is one of the important mechanical elements widely used in manufacturing process equipment or products.

Piping used for the above purposes often has a separate branch pipe connected to one side to guide the flow of fluid flowing therein in a different direction.

When branching the fluid transport path in this way, it is manufactured by drilling one side of the main pipe and then connecting the branch pipe provided in the formed hole by welding.

However, when the end of the branch pipe is inserted into the hole of the main pipe and then welded, the connection is poor due to the difficulty of welding and is often broken off due to external shock. To prevent this, the branch pipe must be connected more than necessary. When inserted into the main pipe, the work proceeds in the form of performing tack welding work followed by final welding, which has the disadvantage of low productivity.

An example to overcome the above problem is Publication Patent No. 1997-0014862. In the above invention, a forced force is applied to a conical tab inserted into the inner surface of a distribution pipe to pass it through the distribution pipe hole to the outside, and the protrusion formed by the pressure is made into an arc-shaped surface with a gentle and natural angle, so that the fluid flows naturally. It relates to a method and device for manufacturing a fluid distribution pipe that ensures that fluid supplied from the center is supplied at the correct amount and pressure through each branch pipe.

The above invention proposes forming a branch pipe, which is a protrusion, by molding part of the main pipe. It has the advantage of enabling smooth connection of branch pipes, but it is advantageous in that the pipe with holes formed at regular intervals is fixed to a workbench. , After inserting and fixing a separate drawing part inside each hole, the branch pipe is formed as the drawing part is drawn, causing the part around the branch pipe to contract and deform, causing a volume change between the main vessels. In addition, there was a disadvantage in that the shape of the branch pipe created was not uniform due to the non-uniformity of the drawing process itself.

The present invention was made to overcome the disadvantages of the prior art as described above, and its purpose is to provide a hydraulic branch pipe forming device that can continuously and precisely form a plurality of branch pipes for one target pipe. Do it as

In order to achieve the above object, the present invention provides a hydraulic branch pipe forming device for forming a branch pipe in a pipe, comprising: a base supporting the structure of the entire device; A pipe drive unit coupled to the upper surface of the base to enable transfer in the longitudinal direction, coupled to one side of the molding pipe to rotate it, and supporting the other side; a molding part whose one end is fixed to the upper surface of the base and the other end is extended to form a branch pipe by pressing a long hole formed in the pipe by hydraulic pressure inside the molding pipe; A processing unit fixed to one surface of the base and interlocking with the pipe driving unit to form a long hole in the forming pipe and processing the outer surface of the branch pipe; and a control unit that controls the entire device.

Preferably, the pipe driving part includes a transfer part that is coupled to the outer surface of the pipe, rotates it, and transports it in the longitudinal direction, and a support part that supports one surface of the pipe.

More preferably, the transfer unit includes a transfer base that transfers along the upper surface of the base and a fixed chuck that is coupled to the transfer base to fix the pipe, the fixed chuck rotates by a separate driving source, and the support unit Characterized in that it includes a support base fixed to the base and a contact part mounted on the support base to support the outer surface of the pipe.

Preferably, the molding part includes: a molding fixing part fixed to the base; a connecting rod that extends from one surface of the molding fixing part and is partially disposed on the inner surface of the molding pipe; And a head attached to the end of the connecting rod, operating by hydraulic pressure provided through the connecting rod, and forming a branch pipe by pressing a long hole formed in the forming pipe during operation.

More preferably, the head includes: a body having a space therein; A body cover attached to the top of the body; a head support portion attached to the bottom of the body and in contact with the inner surface of the molding pipe; An operating unit operating by hydraulic pressure inside the body; and a pressurizing unit connected to the operating unit to pressurize the long hole to form a branch pipe when transported upward.

More preferably, the operating unit supplies a piston that moves up and down inside the body, an elastic body that is disposed between the body and the piston to return the piston, and supplies hydraulic pressure to the bottom of the piston to move the piston upward. It includes a bottom inlet, and the pressurizing part is connected to the piston.

Preferably, the operating unit includes a piston that moves the inside of the body up and down, a bottom inlet that supplies hydraulic pressure to the bottom of the piston to move the piston upward, and an upper part that supplies the supplied hydraulic pressure to the top of the piston to return the piston. It includes an inlet, and the pressurizing part is connected to the piston.

Preferably, the processing unit includes a drilling unit that interlocks with the pipe driving unit to form a long hole in the outer surface of the forming pipe, and a cutting unit that processes the outer surface of the formed branch pipe.

More preferably, the processing unit is characterized in that the forming unit includes a molding receiving part that presses the long hole of the forming pipe to press the outer surface of the pipe when forming the branch pipe, and accommodates the branch pipe to be formed.

More preferably, the molding receiving part includes a hydraulic driving part attached to the base and operating by hydraulic pressure, a pressurizing block transported up and down by the hydraulic driving part, and a receiving part formed on the pressing block to accommodate the branch pipe. It is characterized by

Preferably, the pipe driving part is characterized in that it includes a molding support part installed at a position corresponding to the molding receiving part and supporting the outer surface of the molding pipe.

Preferably, the head is characterized in that it includes an upper support part that is attached to the top of the body and supports the inner surface of the forming pipe.

Preferably, when the drilling unit processes the outer surface of the forming pipe, the control unit operates the pipe driving unit after forming an initial drill hole to transport the forming pipe in the longitudinal direction to form a long hole. .

The hydraulic branch pipe forming device according to the present invention includes a base, a pipe driving part disposed on the upper surface of the base to transport and rotate the pipe, a forming part fixed to the base to form the pipe, and a forming part of the pipe mounted on the upper part of the base. It is composed of a processing unit that performs mechanical processing and a control unit that controls the entire device, so that a plurality of branch pipes can be formed continuously in the pipe, and branch pipe forming can be performed precisely. .

1 is a configuration diagram of a hydraulic branch pipe forming device according to the present invention;

Figure 2 is a configuration diagram of a molded pipe manufactured through the device of Figure 1;

Figure 3 is a configuration diagram of the eastern part of the pipe drive shown in Figure 1;

Figure 4 is a configuration diagram of the molding part shown in Figure 1;

Figure 5 is a configuration diagram of the head shown in Figure 4;

Figure 6 is a configuration diagram of the operating unit shown in Figure 5;

Figure 7 is another embodiment of Figure 6,

Figure 8 is a configuration diagram of the processing unit shown in Figure 1,

Figure 9 is a configuration diagram of a long hole formed in a pipe for forming using Figure 1;

Figure 10 is a connection configuration diagram of the control unit shown in Figure 1;

Figure 11 is another embodiment of Figure 1,

Figure 12 is a configuration diagram of the molded receiving portion shown in Figure 11;

Figure 13 is a configuration diagram of the pressurizing block shown in Figure 12,

Figure 14 is a configuration diagram of the molding support shown in Figure 11,

Figure 15 is another embodiment of Figure 5.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Additionally, when describing the components of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component can be connected or connected directly to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

The hydraulic branch pipe forming device 100 according to the present invention is for manufacturing a formed pipe (3) in which a plurality of branch pipes (2) are formed in a cylindrical pipe (1) as shown in FIG. 2, wherein the branches For the pipe (2), a hole is first formed on the surface of the pipe (1), the area around the hole is molded from the inside of the pipe (1) to the outer surface to form a branch pipe (2), and the end of the formed branch pipe (2) is formed. It is characterized by being completed by machine processing.

As shown in FIG. 1, the hydraulic branch pipe forming device 100 according to the present invention for forming and processing the pipe 1 as described above includes a base 10 supporting the structure of the entire device, the base ( 10), a pipe driving part 20 that transports and rotates the pipe 1, a forming part 40 fixed to the base 10 to shape the pipe 1, and a molding part 40 on the top of the base 10. It is configured to include a processing unit 80 that is mounted and performs mechanical processing on the forming part of the pipe 1 and a control unit 90 that controls the entire device.

First, the base 10 supports the entire device and serves as a structure for combining other members. It is preferably implemented with appropriate strength, and may be partially configured in the form of a frame.

In addition, it includes an upper surface 11 on which the pipe 1 is seated, and a side of the upper surface 11 may include a column part 12 in the form of a vertical wall for mounting the processing part 80.

Of course, if necessary, the shape of the base 10 may be implemented in a form different from that shown in FIG. 1, and may be configured to include a structure for coupling with other members, a guide for transportation, a stopper, etc. .

Meanwhile, as shown in FIG. 3, the pipe driving part 20 is fixed to one side of the upper surface 11 of the base 10 and includes a support part 21 and a pipe 1 that contact and support the outer surface of the pipe 1. It is configured to include a transfer unit 30 that is coupled to one end of the pipe (1) to rotate the pipe (1) and is capable of being transferred along the upper surface (11) of the base (10).

The support portion 21 is fixed to the upper surface 11 of the base 10, and includes a support base 22 through which the molding pipe 1 is disposed and a cylindrical contact portion that contacts and supports the outer surface of the pipe 1. It is composed including (23).

The contact portion 23 functions to accommodate and support the rotation and longitudinal transfer of the pipe 1.

In order to implement the above function, it is configured to include a plurality of rotating balls, which serve to support the pipe (1), but in addition to the configuration shown in the drawing, it accommodates the rotation and longitudinal transfer of the pipe (1). Any configuration that supports the exterior can be applied.

The transfer unit 30 is rotatably coupled to a transfer base 31 that can be transferred in the longitudinal direction from the upper surface 11 of the base 10 and can be fixed through the pipe 1. It is configured to include a fixing chuck 32 that couples one end of the pipe 1 and a transfer drive unit 33 that is mounted on the base 10 and transfers the transfer base 31.

The transfer drive unit 33 is composed of a driving motor and a lead screw, and can be implemented in such a way that the transfer base 31 transfers according to the driving of the motor. However, if necessary, it can also be implemented in the form of a linear motor.

That is, the transfer drive unit 33 performs the function of transporting the transfer base 31 in the longitudinal direction of the pipe 1 when power is supplied.

The fixing chuck 32 grips the outer surface of the pipe 1 and also performs a rotational drive function, so it is separately provided with an actuator for gripping and a driving source for rotation.

Therefore, the transfer unit 30 performs the function of fixing, rotating, and transferring the pipe 1 in the longitudinal direction.

If necessary, the contact part 23 and the fixing chuck 32 can be configured to be used interchangeably depending on the diameter of the pipe 1 to be worked.

Meanwhile, as shown in FIG. 4, the molding part 40 is provided with a molding fixing part 41, a connecting rod 42 extending and attached to the molding fixing part 41, and an end of the connecting rod 42. It is attached and consists of a head 50 disposed inside the pipe 1.

The molded fixing part 41 is mounted and fixed on the upper surface 11 of the base 10, and can be implemented to adjust the fixing position if necessary. Since it serves as a structure, it is preferable to be implemented with appropriate strength. .

A connecting rod 42 is formed to extend from one surface of the molded fixing part 41 in a horizontally arranged state.

The length of the connecting rod 42 is formed in conjunction with the length of the pipe 1, and when working with a pipe 1 of a different length, it can be set to the length of the connecting rod 42 linked to the corresponding length.

Additionally, a hydraulic line for supplying hydraulic pressure to the head 50 is installed in the longitudinal direction inside the connecting rod 42.

The hydraulic line communicates with an externally installed hydraulic pressure generating device to provide hydraulic pressure generated by the hydraulic pressure generating device to the head 50, and also guides the returned hydraulic pressure from the head 50 to the hydraulic pressure generating device. Do it.

If necessary, the hydraulic lines may be comprised of multiple lines.

In addition, the connecting rod 42 is formed with a long axis of a relatively long distance, but since the head 50 is placed inside the pipe 1 and contacts the pipe 50, it is preferable to be implemented with appropriate strength, but the pipe ( 50), it is okay even if some vibration occurs when there is no contact.

Meanwhile, as shown in FIG. 5, the head 50 is coupled to the body 51, which has a space inside, and the lower outer surface of the body 51, and contacts the lower part of the inside of the pipe 1. ), including a head support portion 52 supporting the head support portion 52, an operating portion 60 formed inside the body 51, and a pressing portion 53 disposed outside the body 51 and coupled to the operating portion 60. It is composed.

First, the body 51 is configured to include a space capable of accommodating the operating unit 60, and is preferably configured to have a cylindrical shape into which moving members are inserted. However, if necessary, a cylindrical space is formed inside. The outer surface may have a shape other than cylindrical.

Of course, the strength of the body 51 is configured to withstand the force generated by the operating unit 60.

In addition, the body 51 includes a body cover 54 coupled to the top, and the body cover 54 is coupled with a separate bolt, etc., and a hole is formed to accommodate the pressing portion 53. .

The head support part 52 is fixed to the bottom of the body 51 with a bolt, etc., and is seated on the inner diameter of the pipe 1 to support the head 50 when the pressurizing part 53 operates.

The head support portion 52 includes an outer surface in an arc shape corresponding to the inner diameter of the pipe 1, and can be replaced depending on the inner diameter of the pipe 1.

Meanwhile, the pressing unit 53 performs the function of pressing the long hole 4 formed in the pipe 1 and forming it into the branch pipe 2, and transports it up and down.

The shape of the pressurizing part 53 is a shape in which a curved outer surface is appropriately added based on a cut cone, and the branch pipe 2 can be formed by gradually pressing the long hole 4 formed in the pipe 1. It consists of

If necessary, the pressing part 53 can be implemented as a shape obtained by adding an appropriate curve to a cut sphere.

Meanwhile, the operating unit 60 serves to move the pressing unit 53 up and down and is seated inside the body 51.

The operating unit 60 communicates with an externally installed hydraulic pressure generating device and is operated by being connected to a hydraulic line guided through the connecting rod 42.

As shown in FIG. 6, the operating unit 60 includes a piston 61 that moves up and down inside the body 51, and an elastic body 62 disposed between the top of the piston 61 and the body cover 54. ) and a lower hydraulic port 63 formed at the bottom of the body 51 and coupled to the hydraulic line.

The upper end of the piston 61 is screwed to one end of the pressurizing part 53, so that the pressurizing part 53 can be replaced if necessary, which has the advantage of being able to correspond to pipes (1) of various specifications. There is.

Therefore, the pressing part 53 moves in the same way as the piston 61.

That is, when hydraulic pressure is supplied through the hydraulic line according to the operation of the separate control unit 90, the piston 61 is transported upward, and when the hydraulic pressure supply is removed, it returns by the elastic body 62. am.

In addition, if necessary, the operating part 60 is formed at the bottom of the piston 61 and the body 51 to move up and down inside the body 51, as shown in FIG. 7, and is connected to the hydraulic line. It may also be configured in a double-acting form including a lower hydraulic port 63 coupled to the and an upper hydraulic port 64 formed at the bottom of the body 51 and coupled to the hydraulic line.

In the case of the double-acting type, two hydraulic lines operate alternately, and when the piston 61 is transported to the top to perform molding, hydraulic pressure is supplied to the lower hydraulic port 63 and the upper hydraulic port 64. Set the hydraulic pressure to return.

Conversely, when the piston 61 is transported downward, hydraulic pressure is provided to the upper hydraulic port 64 and the hydraulic pressure is set to return to the lower hydraulic port 63.

Meanwhile, as shown in FIG. 8, the processing part 80 is mounted on the column part 12 of the base 10, forms a hole in the pipe 1, and forms a branch pipe 2. It performs the function of cutting and processing the end surface of the , and includes a drilling part 81 and a cutting part 86.

The drilling unit 81 includes a drill 82 that rotates and moves upward and downward, and the drill 82 rotates and moves downward to form a drill hole 5 on the outer surface of the pipe 1. After forming the drill hole 5, the drill 82 rotates, and the pipe 1 is transferred in the longitudinal direction to form a long hole 4 as shown in FIG. 9.

Therefore, it is desirable that the drill 82 implements an end mill function that can cut in the longitudinal direction.

On the other hand, the long hole 4 is configured to be of a size to be accommodated within the diameter of the branch pipe 2, and the diameter of the drill hole 5 is selected in consideration of the height of the branch pipe 2, and the branch pipe (2) It must be formed smaller than the diameter of 2).

When configured in the form of a long hole (4) as described above, a lot of molding material is placed in the part where a lot of deformation occurs during molding, and less material is placed in a part where little molding occurs, so the pressing force for molding can be reduced. , It also has the characteristic of reducing the amount of mechanical processing.

Meanwhile, the cutting unit 86 also includes a cutter 87 that rotates and moves up and down, and the cutter 87 is a rotary type that performs the function of cutting the outer surface of the branch pipe 2 in a planar shape while rotating. If the machining part is not deep, it can be implemented with a grinding machine.

The control unit 90 is a component that is operated by the operator to operate the entire device. As shown in FIG. 10, the control unit 90 controls the fixing chuck 32 and the transfer drive unit 33 of the transfer unit 30, and controls the molding unit 30. The head 50 of (40) is controlled, and the drilling part 81 and the cutting part 86 of the processing part 80 are controlled, respectively.

When the pipe (1) is installed, the fixing chuck (32) is operated, and then the transfer drive unit (33) and the drilling unit (81) are linked and controlled to form a long hole (4) on the outer surface of the pipe (1). When the formation of the long hole 4 is completed, the head 50 is operated to form the branch pipe 2, and when the forming is completed, the cutting unit 86 is controlled to complete the forming of the branch pipe 2.

When forming a plurality of branch pipes (2), first form all the long holes (4), then operate the head (50) to form all of the branch pipes (2), and then form the branch pipes (2). The operation can be performed in the form of processing with the cutting part 89.

Of course, if necessary, the long holes (4) of the individual branch pipes (2) can be formed, formed, and cut separately, and the long holes (4) are formed and then cut immediately after forming the individual branch pipes (2). You can proceed with .

In addition, the control unit 90 stores processing procedures in advance according to the length, diameter, and number of branch pipes 2 of the pipe 1, and selects from the stored information during actual work to form the pipe 1. It can be configured to proceed.

Meanwhile, in the hydraulic branch pipe forming device 100 according to the present invention, as shown in FIG. 11, the pipe driving part 20 includes a forming support part 120, and the processing part 80 includes a forming receiving part. It can be implemented in a form including (180).

First, as shown in FIG. 12, the molding receiving part 180 includes a hydraulic driving part 181 and a pressurizing block 182 attached to the operating part of the hydraulic driving part 181.

As shown in FIG. 13, the end of the pressing block 182 includes a receiving part 183 shaped to accommodate the branch pipe 2 and the pressing part 53.

The pressing block 182 supports the branch pipe 2 on the outer surface of the branch pipe 2 when the pressing unit 53 forms the branch pipe 2.

At this time, the hydraulic drive unit 181 presses downward, and hydraulic pressure is supplied to the head 50 to press the pressing unit 53 upward.

Of course, the molding is completed and both sides return to their original positions.

The pressurizing block 182 is replaceably installed with a receiving portion 183 of different shapes depending on the pipe 1 to be formed.

In addition, the operation of the molding receiving part 180 is controlled by the control unit 90, and it is preferable to receive hydraulic pressure through a hydraulic pressure generating device that provides hydraulic pressure to the head 50, but if necessary, separate hydraulic pressure is generated. It may be configured to include a device.

Meanwhile, the molding support portion 120 serves to limit the downward movement of the pipe 1 when the hydraulic drive portion 181 is operated at the same position as the molding receiving portion 180, as shown in FIG. 14. , It is configured to include a support base 122 and an arc-shaped contact portion 123 that contacts and supports the outer surface of the pipe 1.

The contact portion 123 includes a plurality of balls and is implemented in the same configuration as the contact portion 23 of the support portion 21 except that it has an arc shape.

Of course, if necessary, the molding support portion 120 is configured in the form of a square box disposed at a certain distance from the pipe 1, and when the molding receiving portion 120 is pressurized, it is compressed by the deformed pipe 1. It can also be configured in a supported form.

In the above configuration, when the forming support unit 120 is not in operation, there is no interference with the pipe 1, so the rotation and transfer of the pipe 1 proceeds smoothly, and it is driven in a supported form only during molding.

Meanwhile, if necessary, the head 50 may include an upper support portion 55 that supports the upper inner surface of the pipe 1, as shown in FIG. 15.

The upper support portion 55 is configured in a shape corresponding to the inner diameter of the pipe 1, and serves to support the pressing force of the molding receiving portion 180 on the inner surface of the pipe 1 during molding, as shown in FIG. 16. Thus, it provides the effect of enabling elaborate branch pipe (2) forming.

What has been described above is only an embodiment for carrying out the hydraulic branch pipe forming device according to the present invention, and the present invention is not limited to the above-described embodiment, without departing from the gist of the present invention claimed in the following patent claims. Anyone skilled in the art to which the present invention pertains will say that the technical spirit of the present invention exists to the extent that it can be implemented with various modifications.

Claims (13)

In a hydraulic branch pipe forming device for forming a branch pipe in a pipe, a base that supports the structure of the entire device; A pipe drive unit coupled to the upper surface of the base to enable transfer in the longitudinal direction, coupled to one side of the molding pipe to rotate it, and supporting the other side; a molding part whose one end is fixed to the upper surface of the base and the other end is extended to form a branch pipe by pressing a long hole formed in the pipe by hydraulic pressure inside the molding pipe; A processing unit fixed to one surface of the base and interlocking with the pipe driving unit to form a long hole in the forming pipe and processing the outer surface of the branch pipe; and A hydraulic branch pipe forming device comprising a control unit that controls the entire device. The hydraulic branch pipe forming device according to claim 1, wherein the pipe driving unit includes a transfer unit that is coupled to the outer surface of the pipe to rotate it and transport it in the longitudinal direction, and a support unit that supports one surface of the pipe. The method according to claim 2, wherein the transfer unit includes a transfer base that transfers along the upper surface of the base and a fixed chuck that is coupled to the transfer base to fix the pipe, and the fixed chuck rotates by a separate driving source, The support part is a hydraulic branch pipe forming device characterized in that it includes a support base fixed to the base and a contact part mounted on the support base to support the outer surface of the pipe. The method of claim 1, wherein the forming part: a molded fixing part fixed to the base; a connecting rod that extends from one surface of the molding fixing part and is partially disposed on the inner surface of the molding pipe; and A hydraulic branch pipe that is attached to the end of the connecting rod, operates by hydraulic pressure provided through the connecting rod, and includes a head that pressurizes the long hole formed in the forming pipe during operation to form the branch pipe. Forming device. The method of claim 4, wherein the head: A body with a space formed inside it; A body cover attached to the top of the body; a head support portion attached to the bottom of the body and in contact with the inner surface of the molding pipe; An operating unit operating by hydraulic pressure inside the body; and A hydraulic branch pipe forming device, characterized in that it includes a pressurizing unit connected to the operating unit and pressurizing the long hole to form a branch pipe when transported in an upward direction. The method according to claim 5, wherein the operating unit supplies a piston that moves up and down inside the body, an elastic body that is disposed between the body and the piston to return the piston, and supplies hydraulic pressure to the lower end of the piston to move the piston upward. A hydraulic branch pipe forming device comprising a bottom inlet, and the pressing portion is connected to the piston. The method according to claim 5, wherein the operating unit includes a piston that moves the inside of the body up and down, a lower inlet that supplies the supplied hydraulic pressure to the lower part of the piston to transport the piston upward, and a lower inlet that supplies the supplied hydraulic pressure to the upper part of the piston to return the piston. A hydraulic branch pipe forming device comprising an upper inlet, and the pressing portion is connected to the piston. The method according to claim 1, wherein the processing unit is a hydraulic branch pipe forming device comprising a drilling unit that interlocks with the pipe driving unit to form a long hole in the outer surface of the forming pipe and a cutting unit that processes the outer surface of the formed branch pipe. . The method of claim 8, wherein the processing unit presses the long hole of the forming pipe to press the outer surface of the pipe when forming the branch pipe, and includes a forming receiving part for accommodating the branch pipe to be formed. Tube forming device. The method of claim 9, wherein the molding receiving part includes a hydraulic driving part attached to the base and operating by hydraulic pressure, a pressurizing block transported up and down by the hydraulic driving part, and a receiving part formed on the pressing block to accommodate the branch pipe. Hydraulic branch pipe forming device, characterized in that. The hydraulic branch pipe forming device according to claim 9, wherein the pipe driving part includes a molding support part installed at a position corresponding to the molding receiving part and supporting an outer surface of the forming pipe. The hydraulic branch pipe forming device according to claim 5, wherein the head includes an upper support portion attached to the top of the body to support the inner surface of the pipe for forming. The method according to claim 8, wherein when the drilling unit processes the outer surface of the forming pipe, after forming an initial drill hole, the control unit operates the pipe driving unit to transport the forming pipe in the longitudinal direction to form a long hole. Hydraulic branch pipe forming device.

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