JPH0574453B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pipe making machine that creates a pipe by spirally winding a band-shaped member, and particularly relates to a pipe making machine that creates a pipe by winding a band-shaped member in a spiral shape, and is particularly suitable for inserting a lining pipe into an existing pipe. The present invention relates to a lining pipe making machine suitable for use.

[Prior Art] In general, a so-called spiral winding type pipe making machine that manufactures a tube by spirally winding a band-like member continuously manufactures the tube by receiving an extrusion force during the manufacturing process. Since the pipe making machine only needs to be placed in a certain location, it is economical and does not take up much space.

However, these spiral winding type pipe making machines are generally manufactured in factories, and the body frame is made rigid, and no special consideration is given to changes in pipe diameter. A separate pipe making machine was prepared and used.

Therefore, with such a pipe making machine, not only is it not possible to manufacture pipes of various diameters using a single model, but when this machine is installed on site for lining underground pipes, There are various problems in that it is not possible to deal with the various diameters of the underground pipes and the setting of the center axis for the underground pipes.

[Technical Problem of the Present Invention] Therefore, in view of the above-mentioned circumstances, an object (technical problem) of the present invention is to provide a new pipe-making machine that eliminates the drawbacks of the above-mentioned prior art.

[Means to solve the problem]

In order to achieve the above object, the pipe making machine of the present invention adopts the following configuration (technical means). In other words, there are pillar members installed upright at the four corners, an upper beam, an upper movable beam, and a lower movable beam, which are arranged horizontally around the four peripheries of the pillar member and allow the pillar member to be moved and adjusted in the width direction. A fuselage frame is constituted by the beam and the lower beam, and the upper movable beam and the lower movable beam are movable and adjustable in the vertical direction along the column member, and have a joining mechanism, a rotation mechanism, a lower guide mechanism, and a side Each pipe making element of the section guide mechanism is attached to the body frame via an angle adjustment mechanism, the rotation mechanism is attached to the upper movable beam, and the lower guide mechanism is attached to the lower movable beam. It is characterized by becoming.

In the above configuration, each of the pipe manufacturing elements including the joining mechanism, the rotation mechanism, the lower part, and the side guide mechanism is arranged at a position that can guarantee the perfect circle of the pipe to be manufactured. It is not limited to.

[Effect]

A belt-shaped member is made into a pipe using this pipe-making machine as follows. That is, a tube is manufactured by passing a continuously supplied band-shaped member through tube-making elements such as a joining mechanism, a guide mechanism, and a rotation mechanism and winding it in a spiral shape. At this time, the column members supporting each tube-making element and the upper and lower movable beams are moved and adjusted according to the pipe diameter, and the angle of each tube-making element is adjusted.

[Other aspects of the invention]

The present invention can take the following embodiments of other inventions.

A mode in which the vertical movement position of the joining mechanism and the side guide mechanism can be adjusted. According to this aspect, not only can it correspond to the diameter of the tube to be manufactured, but also the vertical position of the central axis of the tube can be freely adjusted, and eccentricity in the vertical direction can be adjusted.

A mode in which the lower movable beam is eliminated and the lower guide mechanism is attached to the lower beam. In this embodiment, the joining mechanism and the side guide mechanism are vertically adjustable in position.

〔effect〕

Since the present invention has the above configuration, it has the following unique effects.

According to this pipe making machine, each pipe making element can be moved and adjusted in the vertical direction and width direction (horizontal direction) according to the pipe diameter, and the angle can be adjusted. Even things can be made into pipes.

According to this pipe making machine, it is possible to adjust the eccentricity in the horizontal direction, so when used for lining existing pipes, it is possible to easily adjust the eccentricity in the horizontal direction in a narrow work space.
Particularly effective.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

1 to 6 show an embodiment of a lining pipe making machine H according to the present invention.

Band-shaped member First, the band-shaped member used in the present invention will be explained (see FIG. 7).

A suitable number of trapezoidal protrusions 2 are continuously provided vertically in the longitudinal direction of the outer surface of the strip member 1, and valleys 3 are formed between the protrusions 2. The protrusions 2 and the troughs 3 have an equal pitch in the width direction. A hollow portion is appropriately formed inside the protrusion 2 to increase the rigidity and reduce the weight of the strip member. The inner surface 4 is formed substantially smooth.

Joint parts 5 and 6 are formed on both sides of the strip member 1 to overlap and engage with each other inwardly and outwardly. That is, the protrusion of the outer joint part 5 is formed in the same shape as the protrusion 2, and a round groove 5a is vertically provided on its inner surface, and the overhang part 5b is slightly longer than the width of the valley part 3. .
The length of the protruding part 6a of the inner joint part 6 is approximately equal to the length of the valley part 3 and the protrusion 2, and the round groove 5a of the outer joint part 5 is provided at the end of the protruding part 6a. An engaging round protrusion 6b is provided vertically, and a cut groove 6c is provided vertically in the protrusion 2 at the base thereof.

When joining, the outer joint part 5 is attached to the inner joint part 6.
is pressed by a joining roller 41 (described later), and the round protrusions 6b fit into the round grooves 5a, and the ends of the overhanging portions 5b fit into the cut grooves 6c, respectively.
A welding roller 43 (described later) is pressed against the overlapping portion, and welding and joining are performed using high-frequency heat.

Instead of welding and bonding, it is possible to adopt an embodiment in which bonding is performed using an adhesive. By welding or adhesion at the joint, a joint with excellent water-stopping properties can be obtained.

The strip member is made of rigid resin material,
In particular, from the viewpoint of moldability, vinyl chloride (PVC) resin, which can be continuously molded by extrusion molding, is suitable. However, this does not prevent metal molding.

Pipe Making Machine The detailed structure of the pipe making machine H is shown in FIGS. 1 to 6.

The pipe making machine H consists of main parts such as a body frame 10, a belt-shaped member feeding mechanism 20, a belt-shaped member joint joining mechanism 40, a tube rotation mechanism 50, and lower and side guide mechanisms 70 and 80. What should be noted is that the fuselage frame 1
0 means that it is variable and can correspond to the pipe diameter, and that the feeding mechanism 20 and the rotating mechanism 50 have power.

The joining mechanism 40, the tube rotation mechanism 50, the lower and side guide mechanisms 70, 80 constitute a tube-making element, and the feeding mechanism 20 is excluded from the tube-making element.

Airframe Frame The airframe frame (aircraft frame) 10 (see Figures 1 to 5) includes pillar members 11 erected at the four corners, and the pillar members 1
Upper beam 12 fixed surrounding 1, upper movable beam 1
3. Consists of a lower movable beam 14 and a lower beam 15.

The column member 11 is made of box-shaped steel, and is composed of a front column 11A and a rear column 11B when viewed in the direction of movement of the pipe P.

The upper beam 12 is made of channel steel with front and rear beams 12A opening downward, and the side beams 12B connecting them are made of box steel.

The upper movable beam 13 has front and rear beams 13A made of channel-shaped steel with openings to the front and rear, and a connecting beam 13B made of two box-shaped steel at the center thereof.
connected by.

The lower movable beam 14 has substantially the same configuration as the upper movable beam 13 described above. i.e. front and rear beams 1
4A is made of channel steel with openings at the front and rear;
They are connected at their central portions by two connecting beams 14B made of box-shaped steel.

The lower beam 15 has substantially the same configuration as the upper beam 12 described above. That is, the front and rear beams 15 are made of channel-shaped steel that opens upward, and the side beams 15B that connect them are made of box-shaped steel.

The body frame 10 has the function of supporting various mechanisms (feeding mechanism and tube manufacturing element) to be described later, and also holding these mechanisms according to the diameter of the pipe P.

The column member 11 is variable in the width direction along the beams 12, 13, 14, and 15. That is, the front and rear beam members 12, 13, 14, 15 are provided with a large number of adjustment bolt holes 12a, 13a, 14a, 15a in the longitudinal direction, and the column member 11 is inserted along these bolt holes.
is moved in the width direction and fixed with bolts 16. Of course, instead of the bolt holes, discontinuously drilled grooves may be used.

The upper movable beam 13 and the lower movable beam 14 are the column member 1
It is variable in the vertical direction along 1. That is, a plurality of bolt holes 11a for adjustment are bored in the column member 11 in the vertical direction, and the upper and lower movable beams 13 and 14 are moved in the vertical direction along these bolt holes and fixed with bolts 17. do.

In the movable beams 13 and 14, the connecting beams 13B and 1
4B connects the front and rear beams 13A and 14 with bolts 18.
It is fixed so that it can be moved along A.

The lower beam 15 is placed on the foundation I.

Band-shaped member feeding mechanism Band-shaped member feeding mechanism 20 (see Figures 1 to 4)
consists of a plurality of outer surface feed rollers 21 that are pressed against the protrusions 2 and troughs 3 on the outer surface of the strip member 1, and a plurality of inner surface feed rollers 22 that are pressed against the inner surface of the strip member band 1. An outer crawler belt 23 and an inner crawler belt 24 made of rubber are attached to the outer feed roller 21 and the inner feed roller 22, respectively, to obtain a uniform feeding force. Although a plurality of outer surface feed rollers 21 and inner surface feed rollers 22 are arranged in this embodiment, a single number may be provided. Also,
The outer and inner crawler belts 23, 24 may be omitted. Reference numeral 25 is a hydraulic motor for driving the feed mechanism 20, and is connected to a hydraulic motor unit via a hydraulic hose.

Each roller 21, 22 and the hydraulic motor 25 are mounted on a mount 27 whose angle is adjustable on a mounting plate 26 spanning between the front column 11A and the rear column 11B.
be equipped with. The frame 27 includes a back plate 27a facing the mounting plate 26, and a rib 2 that supports the shaft of the roller.
7b, and a shelf board 27 on which the motor 25 is placed and fixed.
Consists of c. The back plate 27a of the frame 27 is the mounting plate 2
6 by an angle adjustment mechanism (adjust star) 28 so that the angle can be adjusted.

The angle adjustment mechanism 28, as shown in FIG.
a, a groove 28b that is bored at a required angle in the mounting plate 26 and through which the threaded rod 28a is inserted;
It consists of a nut 28c that is drawn to. 28d is a washer. The angle adjustment mechanism is also provided in the joining mechanism 40, the rotation mechanism 50, and the guide mechanisms 70, 80, which will be described later, and its substantial mechanism is the same as the angle adjustment mechanism 28 in the feeding mechanism 20.

Power transmission in the belt-shaped member feeding mechanism 20 is performed as follows. A small gear 30 attached to the drive shaft of the hydraulic motor 25 rotates a large gear 31 having a rotating shaft on the rib 27b of the pedestal 27 by a chain, and rotates an inner feed roller 22 coaxial with the large gear 31. Inner feed roller 22
have gears 32 on both sides and are connected to each other by a chain. Further, the outer surface feed rollers 21 each have a gear 33 and are connected to each other by a chain, and the inner surface feed rollers 22
It is connected to an appropriate gear 32 and rotated.

The power drive of the belt-shaped member feeding mechanism 20 is not limited to the above-mentioned method, and only the outer surface feeding roller 21 may be driven by power, and the inner roller 22 may simply be brought into pressure contact with the belt-shaped member 1 and rotated following the belt-shaped member 1 due to its friction. .

Furthermore, when the outer and inner feed rollers 21 and 22 are single, the drive shaft of the hydraulic motor 25 is directly connected to the shaft of the outer feed roller 21, and the inner feed roller 22 is driven by a hydraulic cylinder connected to a hydraulic motor unit. A mode is adopted in which it is pressed with a predetermined pressure.

Bonding Mechanism The band member joint bonding mechanism 40 (see FIGS. 1 and 4) includes an outer bonding roller 41, an inner bonding roller 42, and a welding roller 43. A guide roller 44 is arranged inside the welding roller 43.

External bonding roller 41 and internal bonding roller 4
2 are both longer than the width of the strip member 1 by an amount corresponding to the joint, and are arranged on a horizontal line passing through the center of the pipe P. As a result, the joint portions (the outer joint portion 5 and the inner joint portion 6) at the ends of the band member 1 engage with each other.

The welding roller 43 is in contact with a power terminal (not shown), and the power terminal is connected to a power generator.

The rollers 41, 42, 43, 44, power terminals, etc. are mounted on a pedestal 46 whose angle is adjustable on a mounting plate 45 spanned between the front column 11A and the rear column 11B. The pedestal 46 consists of a back plate 46a and ribs 46b, and the back plate 46d and the mounting plate 45 are connected by an angle adjustment mechanism 47 (the configuration of which is similar to the angle adjustment mechanism 28 of the belt-shaped member feeding mechanism 20). . The inner surface bonding roller 42 and the guide roller 44 are pivotally connected so that their positions can be adjusted in the direction of the center axis of the pipe, and the welding roller 43 is pivotally connected so that its eccentric position can be adjusted.

Rotation Mechanism The tube rotation mechanism 50 (see FIGS. 1, 2, and 3) is disposed above the rear end of the finished tube P, and applies a rotational driving force to the tube P. The rotation mechanism 5
0 consists of a plurality of outer rotating rollers 51 and a plurality of inner rotating rollers 52. External rotating roller 5
1. An outer rotating crawler belt 53 and an inner crawler belt 54 made of rubber are attached to the inner rotating roller 52, respectively, to obtain a uniform rotational force to the pipe P. In this embodiment, a plurality of outer rotating rollers 51 and inner rotating rollers 52 are arranged, but they may be a single number. Also, the outer and inner track belts 53, 54 may be omitted. 55 is a hydraulic motor for driving the rotating mechanism 50, and is connected to a hydraulic motor unit by a hydraulic hose.

Each of the rollers 51, 52 and the hydraulic motor 55 are mounted on a mounting plate 56 which is installed on a connecting beam 13B of the upper movable beam 13 so that the angle thereof can be adjusted.
Equipped with 7. A roller mounting rib 57b is integrally fixed to the lower surface of the back plate 57a of the pedestal 57, and the mounting rib 57b passes through an adjustment hole 56a formed in the mounting plate 56 and extends downward.
The inner rotating roller 52 is pivotally mounted to the rib 57b so that its position can be adjusted in the tube diameter direction. In addition, the back plate 57
A motor mounting base 57c is integrally erected on the upper surface of a. 57d is a rib of the motor mounting base. The back plate 57a of the frame 57 and the mounting plate 56 are connected by an angle adjustment mechanism 58.

Power transmission in the tube rotation mechanism 50 is performed as follows. A small gear 60 attached to the drive shaft of the hydraulic motor 55 is rotated by a chain to a large gear 61 having a rotating shaft on a rib at the bottom of the mount, and an outer rotating roller 51 coaxial with the large gear 61 is rotated by a chain.
Rotate. The outer rotating rollers 51 each have a gear 62 and are connected to each other by a chain. Further, the inner rotating rollers 52 each have a gear 63 and are connected to each other by a chain, and are also connected to the gear 62 of the outer rotating roller 51 to obtain rotational driving force.

The power driving of the tube rotation mechanism 20 is not limited to the above-mentioned method, and only the outer rotating roller 51 may be powered, and the inner roller 52 may be simply brought into pressure contact with the band-shaped member 1 and rotated by following the friction thereof.

Furthermore, when the outer and inner rotating rollers 51 and 52 are single, the drive shaft of the hydraulic motor 55 is directly connected to the axis of the outer rotating roller 51, and the inner rotating roller 52 is driven by a hydraulic cylinder connected to a hydraulic motor unit. A mode is adopted in which it is pressed with a predetermined pressure.

Guide Mechanism The lower guide mechanism 70 includes an outer guide roller 71 and an inner guide roller 72. They are installed at the lowest end of the tube P being manufactured.

Each of the rollers 71 and 72 is mounted on a pedestal 74 whose angle is adjustable on a mounting plate 73 that extends over the connecting beam 14B of the lower movable beam 14. The pedestal 74 consists of a back plate 74a and ribs 74b.
4a and the mounting plate 73 are connected by an angle adjustment mechanism 75. The shaft portion of the inner roller 72 is supported by a rib 74b so as to be movable toward the center of the tube axis.

The lower guide mechanism 70 resists the force that tends to pull the strip member upward, and ensures that the tube P is perfectly circular.

The side guide mechanism 80 consists of an outer guide roller 81 and an inner guide roller 82, which are arranged on a horizontal line passing through the longitudinal axis of the tube P to be manufactured.

Each of the rollers 81 and 82 is mounted on a pedestal 85 that is fixed via an angle adjustment mechanism 84 to a mounting plate 83 that spans the front column 11A and the rear column 11B. The pedestal 85 has a back plate 8 facing the mounting plate 83.
5a, and a rib 85b that supports the shaft portion of the roller. The shaft portion of the inner roller 82 is supported by a rib 85b so as to be movable toward the center of the tube axis.

Power Drive As described above, the rollers of the belt-shaped member feeding mechanism 20 and the rotation mechanism 50 are driven by power, and the joining mechanism 40 and the guide mechanism 7
0 and 80, these rollers do not require any particular power, but this does not preclude driving these rollers, especially the outer rollers 41, 71, and 81 with power. In this case, the driving force for these outer rollers 41 , 71 , 81 is rotationally driven by a hydraulic motor that is linked to a hydraulic unit in the same way as the feeding mechanism 20 and the rotation mechanism 50 . ,7
2 and 82 are also pressed together by a hydraulic cylinder. Note that there is no particular need to drive the lower guide mechanism 70 by power.

In the power drive of these rollers, the feed mechanism 20 as well as the power drive rollers 4 of each tube-making element
The rotations of 1, 51, 71, and 81 are synchronized. In addition, the power-driven roller 4 of each tube-making element
1, 51, 71 and the belt-shaped member 1 increases, and the feeding mechanism 20 feeds the belt-shaped member 1 relatively faster, causing slack in the belt-shaped member 1. The feed speed of 20 is reduced to prevent the strip member 1 from sagging.

Hereinafter, the method of making a pipe using the pipe making machine H of this embodiment and the functions of each component structure constituting this pipe making machine will be described.

First, each part of the pipe making machine H is adjusted according to the diameter of the pipe P to be produced. That is, adjustment of the column member 11 of the fuselage frame 10 and the lower guide roller mechanism 70 in the width direction, and adjustment of the upper and lower movable beams 1.
Perform vertical adjustments in steps 3 and 14. These adjustments can be made not only to adjust the tube diameter but also to adjust the eccentricity with respect to the central axis of the tube. In addition,
When adjusting the eccentricity in the vertical direction, the joining mechanism 40 and the side guide mechanism 80 are also adjusted by moving up and down.

Further, a belt-shaped member feeding mechanism 20, a belt-shaped member joining mechanism 40, a tube rotation mechanism 50, and guide mechanisms 70, 80
The swing angle of each roller is adjusted by its own angle adjustment mechanism. These angle adjustments are made more gradual as the pipe diameter increases, and become steeper as the pipe diameter becomes smaller.

Next, the tip of the tube P is created. That is, the belt-like member 1 is fed out, and the belt-like member feeding mechanism 20, joining mechanism 40, and lower guide mechanism 7 of the pipe making machine H
0, the band member 1 is manually wound in a helical manner sequentially to the side guide mechanism 80 and the rotation mechanism 50, and the tip thereof reaches the joining mechanism 40. At this time, inner rollers 42, 44, 72, which can move forward and backward in the radial direction,
82 and 52 are moved backward in advance in the direction of the center of the tube axis, and after passing the strip member 1, they are moved forward toward the outer roller to pinch the strip member 1 together with the outer roller.

When the power device 25 of the feeding mechanism 20 and the power device 55 of the rotation mechanism 50 are driven in this state, the tip of the strip member 1
1. The strips are forcibly fed between the inner surface bonding rollers 42, and the end joints of adjacent strip members are engaged and overlapped by the action of the outer surface bonding rollers 41. The superposed joint parts are welded and joined by a welding roller 43 following the joining roller 41, and are firmly joined.

Thereafter, the strip member 1 is continuously supplied, and the pipes P are successively produced by the pipe-making elements.

As the lining pipe P is formed, the friction between the rollers of each tube-making element and the strip member 1 increases, the feed speed of the feed mechanism 20 increases relatively, and when the strip member 1 becomes slack, the feed mechanism 20 stops feeding. Reduce speed. As a result, a tensile force is applied to the strip member 1, and a lining pipe P having a constant diameter is formed without sagging.

FIG. 8 shows an outline of lining construction work in which a pipe, that is, a lining pipe P, is inserted into an underground pipe Q using the pipe making machine H of the present invention.

In the figure, J is a vertical hole, and K is a winding drum arranged at the opening of the vertical hole J. Furthermore, above ground,
A vehicle O equipped with a power generator L, an electric heat welding transformer M, and a hydraulic motor unit N is placed on standby, and electric wires and hydraulic hoses are installed from the electric heat welding transformer M and the hydraulic motor unit N. are connected to the required parts of the pipe making machine H.

The technical problems that arise in such lining construction work include whether the pipe making machine can be carried into the narrow vertical hole J and whether it can be operated easily, and whether the buried pipe Q should always be kept at the center of the vertical hole J. There are other issues, such as whether or not the eccentricity of the pipe-making machine installed at the bottom of the vertical hole can be easily adjusted.

As is clear from the above description, the pipe making machine of the present invention can easily overcome the above problems.

The present invention is not limited to the above-described embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included within the technical scope of the present invention.

The tube-making elements are not necessarily limited to the positions shown in this embodiment, but only need to be placed at positions that ensure the roundness of the tube to be manufactured. For example, the joining mechanism 40 is determined not only by the horizontal position passing through the central axis of the pipe P but also by the closing position of the supplied strip member. In addition, the feeding device 2
0 can also be mounted on the top of the fuselage frame 10 (ie, on the top beam 12).

The lower movable beam 14 is eliminated and a lower guide roller mechanism 70 is mounted on the lower beam 15. In this case, when adjusting the tube diameter, the movement of the upper movable beam 13 is doubled, and the joining mechanism 40 and the side guide mechanism 80 are also made movable.

The outer guide roller 71 of the lower guide mechanism 70 is eliminated and the guide is guided by an inner guide roller 72.

The welding roller 43 is eliminated in the joining mechanism 40, and the belt-like member 1 is
Adhesive means (for example, an adhesive injection nozzle) are placed in position before mutual polymerization.

The constituent members of the fuselage frame 10 are made of appropriate materials and shapes, the driving force is replaced by an electric motor instead of a hydraulic motor, the power transmission is replaced by a chain by an appropriate means (for example, belt transmission), or Eliminating the crawler belt is a natural design matter, so it will not be discussed in detail.

Angle adjustment mechanism 28, 47, 58, 75, 84
is not limited to that of this embodiment. In short, any mechanism that can adjust the feeding mechanism and each tube-making element to a predetermined angle depending on the tube diameter is sufficient.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a front view of the pipe making machine of the present invention, FIG. 2 is a left side view (partial sectional view) thereof, FIG. 3 is a plan view thereof, and FIG. is a right side view (partial sectional view), FIG. 5 is an exploded three-dimensional view of the beam of the fuselage frame, FIG. 6 is a cross-sectional view of the angle adjustment mechanism, and FIG. FIG. 8, which is a sectional view of one embodiment, is a diagram showing the implementation procedure of the present invention in an underground pipeline. 1... Strip member, 10... Airframe frame, 11
... Column member, 12 ... Upper beam, 13 ... Upper movable beam, 14 ... Lower movable beam, 15 ... Lower beam, 20
...Feed mechanism, 21...Outer surface feed roller, 22
...Inner feed roller, 40...Joining mechanism, 41
... External bonding roller, 42... Inner bonding roller, 43... Welding roller, 50... Pipe rotating mechanism, 51... External rotating roller, 52... Inner rotating roller, 70... Lower guide roller mechanism, 8
0... Side guide roller mechanism.

Claims (1)

[Scope of Claims] 1. A pillar member 11 that is arranged upright at each of the four corners, and an upper part that is arranged horizontally around the four circumferences of the pillar member 11 and that allows the pillar member 11 to be moved and adjusted in the width direction. Beam 1
2. The fuselage frame 10 is constituted by the upper movable beam 13, the lower movable beam 14, and the lower movable beam 15, and the upper movable beam 13 and the lower movable beam 14
is movable and adjustable in the vertical direction along the column member 11, and includes a joining mechanism 40, a rotation mechanism 50, and a lower guide mechanism 7.
0, each tube-making element of the side guide mechanism 80 is attached to the body frame 10 via an angle adjustment mechanism, the rotation mechanism 50 is attached to the upper movable beam 13, and the lower guide mechanism 70 is attached to the upper movable beam 13. A pipe making machine, characterized in that it is attached to the lower movable beam 14. 2. A column member 11 arranged upright at the four corners, and an upper beam 1 arranged horizontally around the four circumferences of the column member 11, which allows the column member 11 to be moved and adjusted in the width direction.
2. The upper movable beam 13 and the lower beam 15 constitute the fuselage frame 10, The upper movable beam 13 can be adjusted to move vertically along the column member 11, The joining mechanism 40, The rotation mechanism 50 , lower guide mechanism 7
0, each tube-making element of the side guide mechanism 80 is attached to the body frame 10 via an angle adjustment mechanism, the rotation mechanism 50 is attached to the upper movable beam 13, and the lower guide mechanism 70 is attached to the upper movable beam 13. A pipe making machine, characterized in that it is attached to the lower beam 15.