KR101126045B1 - Flare flange machine - Google Patents

Abstract

PURPOSE: A flare flange machine is provided to form flanges at various angles because a pin jig is selected according to a desired flange angle and simply coupled to a coupling hole of a pin jig shaft. CONSTITUTION: A flare flange machine comprises a transfer cylinder(10), a drive motor(20), a driving unit(30), a pin jig(40), and a die jig. The drive motor reciprocates along with a cylinder housing(12). The driving unit comprises an electric pulley shaft(31), a pulley shaft bearing(33), a pin jig shaft(34), a thrust ball bearing(36), a driving pulley(37), a driven pulley(38), and a transmission belt(39). One end of the pin jig is coupled to a coupling hole(35) of the pin jig shaft while the other end presses an end of a pipe to form a flange. The die jig is installed on the top of a work table and guides the pin jig to press the pipe, thereby forming the flange.

Description

Flare Flange Machine

The present invention relates to a flared flange machine, and more particularly to a flared flange machine capable of machining integral flanges at the ends of pipes, forming flanges of various angles, and extending the life of pin jigs.

Pipes are hollow, long, thin tubes that are mainly used for transporting fluids (gases, liquids) or powders. That is, a pipe is used for the metal pipe pile etc. which are normally used for building materials, the moving path which supplies fuel to engines, such as a ship.

Such pipes are generally used by connecting several pipes, in which connection is usually made through a disk-shaped flange having a constant thickness.

Such a conventional flange is formed of a disc having a predetermined thickness to form a coupling hole into which a pipe is fitted, and a plurality of coupling holes are formed at the edge of the coupling hole so that the flanges are coupled to each other when the pipe is connected. The pipe and the flange are fixedly coupled to each other by welding, and the fixed flange is connected to the flange of another pipe to connect the pipe and the pipe.

By the way, the conventional flange is one end of the pipe and the flange is coupled only by welding, so the rigidity of the welded part is weak, and damage such as cracks is generated due to external impact or pressure.

SUMMARY OF THE INVENTION An object of the present invention for solving the above-mentioned problems is to provide a flared flange machine capable of machining an integral flange at an end of a pipe.

Another object of the present invention is to provide a flared flange machine that can form flanges of various angles.

It is a further object of the present invention to provide a flared flange machine which allows the life of the pin jig to be extended.

Flare flange machine of the present invention for achieving the above object, the cylinder rod is fixed on the worktable one end, the rod guide hole is formed so that the cylinder rod is inserted into one side of the inner side and the pulley shaft hole on the other side A transfer cylinder having a cylinder housing which is formed and reciprocated along the longitudinal direction of the cylinder rod when hydraulic pressure is supplied to the rod guide hole; A drive motor installed in the cylinder housing of the transfer cylinder and reciprocated with the cylinder housing; An electric pulley shaft having one end coupled to the pulley shaft hole of the cylinder housing and having an eccentric coupling hole therein; a pulley shaft bearing coupled between one end of the electric pulley shaft and the eccentric coupling hole to support rotation of the electric pulley shaft; The pin jig shaft, one end of which is coupled to the eccentric coupling hole of the electric pulley shaft and the other end of the coupling hole is formed, is coupled between the electric pulley shaft and the pin jig shaft to support pressure acting in the axial direction of the pin jig shaft. Thrust ball bearings, drive pulleys coupled to the motor shaft of the drive motor, electric pulleys coupled to the other end of the motorized pulley shaft, and electric motors coupled to the drive pulleys and motorized pulleys to transfer the rotational power of the drive motor to the electric pulley shafts. A transmission unit made of a belt; A pin jig having one end coupled to the coupling hole of the pin jig shaft and the other end pressing the end of the pipe to form a flange; It is installed on top of the work table, the pipe is gripped and the pin jig comprises a zigzag for guiding the flange to be formed at the end of the pipe when pressing the end of the pipe.

Another feature of the flared flange machine of the present invention, the pin jig is coupled to the eccentric coupling hole of the electric pulley shaft, the coupling part is eccentrically rotated when the electric pulley shaft is rotated, and one side of the coupling part is integrally provided with the electric pulley The first flare part which expands the pipe end primarily while being eccentrically rotated when the shaft rotates, and is integrally provided between the coupling part and the first flare part, and is eccentrically rotated by the first flare part when the electric pulley shaft rotates. A second flared portion for expanding the secondaryly expanded pipe end secondary to form a flange; The zigzag is formed in the gripping groove to be held in close contact with the circumference of the pipe to hold the pipe, the sleeve groove is formed at one side of the gripping groove, and the molding space is formed at a diameter larger than the diameter of the sleeve groove at one side of the sleeve groove. The inner surface of the molding space and the center line of the gripping groove are composed of a pair of jig bodies formed to be perpendicular to each other, and a sleeve coupled to the sleeve grooves of the jig body to guide the pipe end to be expanded toward the molding space side; The pin jig is arranged such that one side of the second tapered surface on one side of the second flare is parallel to the inner surface of the molding space, and the center line of the pin jig and the center line of the electric pulley shaft are the first flare of the pin jig. Are arranged to meet each other at the ends of the division.

Another feature of the flared flange machine of the present invention, the pin jig is coupled to the eccentric coupling hole of the electric pulley shaft, the coupling part is eccentrically rotated when the electric pulley shaft is rotated, it is provided integrally with this on one side of the coupling part The first flare part which expands the pipe end primarily while being eccentrically rotated when the pulley shaft rotates, and is integrally provided between the coupling part and the first flare part, and is eccentrically rotated by the first flare part when the electric pulley shaft rotates. A second flared portion for expanding the primary expanded pipe end secondary to form a flange; The zigzag is formed of a pair of jig bodies in which a gripping groove is formed to be in close contact with the circumference of the pipe so as to grip the pipe, and a molding space is formed on one side of the gripping groove to be tapered with respect to the gripping groove; The pin jig is arranged such that one side of the second tapered surface on one side of the second flared portion is parallel to one of the tapered surfaces of the molding space, and the center line of the pin jig and the center line of the electric pulley shaft are the pin jig. It is arranged to meet each other at the end of the first flare.

Another feature of the flared flange machine of the present invention is that the center line of the eccentric coupling hole, the pin jig shaft and the pin jig is eccentric with respect to the rotation center line of the electric pulley shaft, and the eccentric angle is 1 to 5 degrees.

According to another aspect of the flared flange machine of the present invention, 96 to 98% of chromium oxide (Cr ₂ O ₃ ) and 2 to 4% of titanium dioxide (TiO ₂ ) are added to the first and second flare portions of the pin jig. Ceramic powder, chromium oxide (Cr ₂ O ₃ ) powder, aluminum oxide (Al ₂ O ₃ ) powder, titanium dioxide (TiO ₂ ) powder, yttrium oxide (Y ₂ O ₃ ) powder, zirconia (ZrO ₂ ) powder Among the chromium nickel (Cr ₃ C ₂ 25 NiCr) powder (chromium carbide 75%, nickel 20%, chromium 5%), any one powder is provided to have a powder particle size of 10 ~ 44㎛, the powder particle size Powder having a coating is sprayed around the first flare portion and the second flare portion of the pin jig is provided.

According to the present invention as described above, when the driving motor is driven after the pipe is gripped by the gripping groove of the die jigs, the electric pulley shaft is rotated to rotate the pin jig shaft and the pin jig. The 5 ° tilted pin jig shaft, the pin jig, is eccentrically rotated to open the end of the pipe outward to form a flange. That is, the first tapered surface of the first flared portion of the pin jig is sequentially contacted around the inner circumferential surface of the pipe end, and the pipe end is first spread, and the second tapered surface of the second flared portion of the pin jig is firstly expanded. While contacting around the inner circumferential surface in order to expand secondarily to form a flange. Therefore, since the flange is integrally formed at the end of the pipe, there is no need for welding and the like, and the flange is not easily broken even under external impact or pressure.

In the flared flange machine of the present invention, the engaging portion of the pin jig is easily detached from the engaging hole of the pin jig shaft. Therefore, the pin jig suitable for the forming angle of the flange can be selected and simply combined, so that a single flange flange machine can be formed at various angles, thereby greatly improving the compatibility of the flare flange machine.

In the flared flange machine of the present invention, a coating layer having excellent oxidation resistance and durability is formed on the first flare portion and the second flare portion of the pin jig, which are exposed to external influences and the pipe end is continuously pressed. Therefore, the oxidation and damage of the pin jig is prevented, so the life of the pin jig is extended, thereby reducing the maintenance cost.

1 is a schematic front view showing a flared flange machine of the present invention.
2 is a side view of FIG. 1
3 is a side view of the die jigs
Figure 4 is a schematic front sectional view showing a coupling state of the transfer cylinder, the electric drive, the pin jig
5 is a schematic front view showing a state in which a drive motor and a transfer cylinder are operated.
6 is a schematic partial front sectional view showing a state in which the end of the pipe is first expanded;
7 is a schematic partial front sectional view showing a state in which the end of the pipe is expanded secondarily;
8 is a schematic front cross-sectional view showing a flange formed at 90 ° to the center of the pipe;
9 is a schematic cutaway perspective view showing a flange of a pipe connected to a nipple;
10 is a schematic front view showing another embodiment of the flared flange machine of the present invention.
11 is a schematic front view showing a state in which a drive motor and a transfer cylinder are operated;
12 is a schematic front sectional view showing the flange formed at 37 ° with respect to the center of the pipe;
13 is a schematic cutaway perspective view showing a flange of a pipe connected to a nipple;

Specific features and advantages of the present invention will become more apparent from the following description with reference to the accompanying drawings.

1 is a schematic front view showing a flared flange machine of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a side view of a zigzag. Figure 4 is a schematic front sectional view showing a coupling state of the transfer cylinder, the electric drive, the pin jig, Figure 5 is a schematic front view showing the operation of the drive motor and the transfer cylinder, Figure 6 is the end of the pipe is first expanded A schematic partial front cross-sectional view showing the state. 7 is a schematic partial front sectional view showing a state in which the end of the pipe is secondly expanded, and FIG. 8 is a schematic front sectional view showing the flange formed at 90 ° with respect to the center of the pipe, and FIG. 9 is a flange of the pipe. A schematic cutaway perspective view showing a state of being connected to a nipple.

The flared flange machine of this invention consists of a transfer cylinder 10, the drive motor 20, the transmission part 30, the pin jig 40, and the die jig 50. As shown in FIG.

The transfer cylinder 10 has a cylinder rod 11, one end of which is fixed on a worktable, and a rod guide hole 13 formed so that the cylinder rod 11 is inserted into one inner side thereof, and a pulley shaft hole in the other inner side thereof. 14 is formed, and when the hydraulic pressure is supplied to the rod guide hole 13, it consists of a cylinder housing 12 which reciprocates along the longitudinal direction of the cylinder rod 11.

The drive motor 20 is installed in the cylinder housing 12 of the transfer cylinder 10 and reciprocated together with the cylinder housing 12, and the drive pulley 37 of the electric motor 30 to be described later on the motor shaft 21. ) Are combined.

The transmission part 30 includes an electric pulley shaft 31, a pulley shaft bearing 33, a pin jig shaft 34, a thrust ball bearing 36, a drive pulley 37, an electric pulley 38, and an electric belt 39. )

One end of the electric pulley shaft 31 is coupled to the pulley shaft hole 14 of the cylinder housing 12 so as to have an eccentric coupling hole 32 formed therein. The pulley shaft bearing 33 is coupled between one end of the electric pulley shaft 31 and the eccentric coupling hole 32 to support rotation of the electric pulley shaft 31. One end of the pin jig shaft 34 is engaged with the eccentric coupling hole 32 of the electric pulley shaft 31, and the coupling hole 35 is formed at the other end thereof. The thrust ball bearing 36 is coupled between the electric pulley shaft 31 and the pin jig shaft 34 to support pressure acting in the axial direction of the pin jig shaft 34. The drive pulley 37 is coupled to the motor shaft 21 of the drive motor 20,

The electric pulley 38 is coupled to the other end of the electric pulley shaft 31, and the electric belt 39 is coupled to the drive pulley 37 and the electric pulley 38 to thereby rotate the rotational power of the drive motor 20. Transfer to the electric pulley shaft (31).

The pin jig 40 has one end coupled to the engaging hole 35 of the pin jig shaft 34, and the other end presses the end of the pipe 1 to form the flange 2.

The pin jig 40 is coupled to the eccentric coupling hole 32 of the electric pulley shaft 31, the coupling portion 41 is rotated eccentrically when the electric pulley shaft 31 is rotated, the coupling portion 41 A first flared portion 42 provided integrally with this on one side of the first flared portion 42 and having a first tapered surface 43 so as to eccentrically rotate the end portion of the pipe 1 primarily when the electric pulley shaft 31 is rotated; The pipe 1 which is provided integrally therewith between the coupling part 41 and the first flare part 42 and is first expanded by the first flare part 42 while being eccentrically rotated during the rotation of the electric pulley shaft 31. The second flared portion 44 is formed with a second tapered surface 45 so as to expand the second end to form the flange 2.

The zigzag 50 is installed at an upper portion of a work table (not shown), and the pipe 1 is gripped, and the pin jig 40 presses the end of the pipe 1 when the flange 1 Guide 2) to be molded.

The zigzag 50 is in close contact with the circumference of the pipe 1, the gripping groove 52 is formed to hold the pipe 1 and the sleeve groove 53 is formed on one side of the gripping groove 52 One side of the sleeve groove 53 is formed with a molding space 54 with a diameter larger than the diameter of the sleeve groove 53. The inner surface 55 of the molding space 54 and the center line of the gripping groove 52 are coupled to the pair of jig bodies 51 and the sleeve grooves 53 of the jig bodies 51 to form a right angle with each other. (1) It consists of the sleeve 5 which guides an end part to expand toward the molding space 54 side.

Here, the pin jig 40 is disposed such that one portion of the one side second taper surface 45 of the second flare portion 44 is parallel to the inner surface 55 of the molding space 54 when viewed in a side view. .

In addition, the center lines of the eccentric coupling hole 32, pin jig shaft 34, and pin jig 40 are eccentrically formed with respect to the rotation center line of the electric pulley shaft 31, and the eccentric angle is 1 to 5 degrees. .

When the eccentric angle is less than 1 °, the swing width of the end portion of the first flare 42 is relatively small during the rotation of the pin jig 40, so that the degree of expansion of the end portion of the pipe 1 is insignificant.

When the eccentric angle exceeds 5 °, the swing width of the end portion of the first flare portion 42 during the rotation of the pin jig 40 is relatively widened at the end of the pipe 1 at a time so that the pipe end and the pin jig ( 40) the load is excessive.

Therefore, the center lines of the eccentric coupling hole 32, pin jig shaft 34, and pin jig 40 are preferably inclined by about 1 to 5 degrees with respect to the rotation center line of the electric pulley shaft 31.

On the other hand, 96 to 98% of chromium oxide (Cr ₂ O ₃ ) and 2 to 4% of titanium dioxide (TiO ₂ ) are mixed in the first flare 42 and the second flare 44 of the pin jig 40. Ceramic powder, chromium oxide (Cr ₂ O ₃ ) powder, aluminum oxide (Al ₂ O ₃ ) powder, titanium dioxide (TiO ₂ ) powder, yttrium oxide (Y ₂ O ₃ ) powder, zirconia (ZrO ₂ ) powder, Among the chromium nickel (Cr ₃ C ₂ 25 NiCr) powder (chromium carbide 75%, nickel 20%, chromium 5%), any one powder is provided to have a powder particle size of 10 ~ 44㎛, the powder particle size A coating layer 57 is formed in which powder having a thermal spray is sprayed around the first flared portion 42 and the second flared portion 44 of the pin jig 40.

The coating layer 57 has a thickness of 50 to 600 μm around the first flare 42 and the second flare 44, and maintains hardness of 900 to 1000 HV and surface roughness of 0.1 to 0.3 μm. Plasma coated to

The coating layer 57 jets around the first flare 42 and the second flare 44 at a speed of about 2 Mach at a rate of about Mach 2 and powder of one kind selected from the above powders. The first flare 42 and the second flare 44 are cooled by a cooling device to prevent deformation of the heated first flare 42 and the second flare 44. Maintaining a temperature of 200 ° C.

Chromium oxide (Cr ₂ O ₃ ) serves to prevent rust by acting as a passivity layer that blocks oxygen invading into the metal.

Titanium dioxide (TiO ₂ ) is very stable physicochemically and has a high hiding power, thus becoming a white pigment. In addition, the refractive index is high, it is widely used in high refractive index ceramics. It has photocatalytic and superhydrophilic properties. Titanium dioxide (TiO ₂ ), air purification, antibacterial, harmful substance decomposition, pollution prevention function, discoloration prevention function. The titanium dioxide (TiO ₂ ) is such that the coating layer 57 is reliably coated around the first flare 42 and the second flare 44, the first flare 42 and the second flare The foreign matter attached to the 44 is disassembled and removed to prevent damage to the first flare 42 and the second flare 44.

In this case, when chromium oxide (Cr ₂ O ₃ ) and titanium dioxide (TiO ₂ ) are mixed and used, the mixing ratio thereof is titanium dioxide (TiO ₂ ) 2˜to 96 to 98% of chromium oxide (Cr ₂ O ₃ ). It is preferred that 4% is mixed.

When the mixing ratio of chromium oxide (Cr ₂ O ₃ ) is less than 96-98%, the coating of chromium oxide (Cr ₂ O ₃ ) is often broken in an environment such as high temperature, so that the first flare part The antirust effect of 42 and the 2nd flare part 44 fell rapidly.

When the mixing ratio of titanium dioxide (TiO ₂ ) is less than 2 to 4%, the effect of titanium dioxide (TiO ₂ ) was insignificant enough to fade the purpose of mixing it with chromium oxide (Cr ₂ O ₃ ). That is, the titanium dioxide (TiO ₂ ) decomposes and removes foreign matter attached to the circumference of the first flare 42 and the second flare 44, so that the first flare 42 and the second flare 44 are removed. Is to prevent corrosion or damage, if the mixing ratio is less than 2 ~ 4%, there is a problem that takes a long time to decompose the attached foreign matter.

When the aluminum oxide (Al ₂ O ₃ ) is formed with the coating layer 57 around the first flare 42 and the second flare 44, the coating is uniform and there is no gap, so the first flare 42 And the circumference of the second flare portion 44 is reliably protected. The melting point of the aluminum oxide (Al ₂ O ₃ ) is very high at 2050 ° C. to protect the first flare 42 and the second flare 44 at a high temperature, and has a great effect on preventing oxidation. Therefore, in the aluminum oxide (Al ₂ O ₃ ) coated on the first flare 42 and the second flare 44, seawater or air is surrounded by the first flare 42 and the second flare 44 The first flare 42 and the second flare 44 are prevented from being oxidized by blocking contact with the.

Yttrium oxide (Y ₂ O ₃ ) is excellent in heat resistance, high temperature oxidation resistance and corrosion resistance, and is suitable for thermal spray coating in that it exhibits plasma corrosion resistance even in a plasma etching atmosphere.

Zirconia (ZrO ₂ ) is a heat-resistant material with a high melting temperature (about 2,700 ° C). It has low thermal conductivity, broad chemical stability from acidic to alkaline range, low thermal expansion, high strength and high hardness (more than 7.0 MOS hardness). ) Has excellent material properties such as friction resistance.

The chromium nickel (Cr ₃ C ₂ 25 NiCr) powder is made by mixing 75% chromium carbide, 20% nickel, and 5% chromium.

Coating layer 57 made of one selected from these materials, the thickness of 50 ~ 600㎛ around the first flare 42 and the second flare 44, the hardness is 900 ~ 1000HV, Surface roughness is plasma coated to maintain 0.1 ~ 0.3㎛.

The coating layer 57 jets around the first flare 42 and the second flare 44 at a speed of about 2 Mach at a rate of about Mach 2 and powder of one kind selected from the above powders. After spraying by spraying at 400㎛, it is wrapped at 50∼600㎛ using Diamond Wheel and Film.

When the thickness of the coating layer 57 is less than 50 μm, the effect of the ceramic coating layer 57 is not guaranteed. When the thickness of the coating layer 57 exceeds 600 μm, the increase in the above-described effect is insignificant. There is a problem in that work time and material costs are wasted by excessive ceramic coating.

While the coating layer 57 is coated on the first flare 42 and the second flare 44, the temperature of the first flare 42 and the second flare 44 is increased. The first flare 42 and the second flare 44 are cooled by a cooling device (not shown) to maintain a temperature of 150 to 200 ° C. to prevent deformation of the portion 42 and the second flare 44. Will be done.

The thermal spraying method for forming the coating layer 57 around the first flare 42 and the second flare 44 causes the use of a hot gas-flame or plasma to convert metals, ceramics and mixtures thereof. It is a surface treatment technology which forms a film on the surface of a base material by inject | pouring in and spraying at high speed in a molten or semi-melt state.

When electrical energy is applied between the tungsten cathode and the Cu anode nozzle of the thermal spray, an arc is generated, and when a gas or a gas mixture flows, plasma is generated. In this case, plasma is dissociated into atoms when the molecular gas is heated to a high temperature, and when energy is added thereto, electrons are released. This state is useful as a heat source having a very high energy. The characteristics of the plasma jet as a thermal spraying source are as follows.

Since it is a heat source with high energy density, it is easy to spray a high melting point metal or ceramics. If the material is accompanied by a safe melting phenomenon such as metals, ceramics, plastics, and the like, spraying is possible, so the selection area of the coating material is high. Because of the high velocity of the plasma jet, the thermal spraying material collides with the workpiece at high speed, thereby obtaining a high adhesion strength and high density coating. It is easy to output large, so the amount of spraying per unit time is big, so workability is good and economy is high. It is oxygen-free, carbon-free and clean, thermochemically active heat source, so there is little contamination and change of thermal spray material.

Depending on the type and condition of the heat source, the temperature of the thermal spray particles, the dwell time, the contact time with the atmospheric gas component, in particular, the collision energy to the surface of the base metal, and the rapid freezing and condensing velocity vary. In other words, the physical and chemical properties of the thermal spray coating vary greatly.

The thermal spraying material injected into the plasma flame is heated and melted by a heat source and is flying at a high speed by the plasma jet. Since the molten particles in the air contact the air and rush to the base material with the oxide film formed thereon, the thermal spray coating formed on the first flare 42 and the second flare 44 forms an oxide film on the surface. It has a cross-sectional structure, such as in which numerous particles are deposited.

The powder particle size suitable for thermal spraying is preferably in the range of 10 to 44 µm. If the fineness of the thermal spray is less than 10 μm, it is easy to vaporize in the thermal spray, and if the fineness of the thermal spray is more than 44 μm, the thermal spraying is unmelted during spraying. In addition, a large influence on the quality of the thermal spray coating is a particle size distribution, and when the particle size difference is large, the energy and flight trajectory obtained by each powder particle from the heat source are different from each other, thereby decreasing the uniformity of the composition and physical properties of the coating layer 57. Therefore, strict spray powder particle size distribution control is required.

It is preferable to be spherical within the above-described powder particle size in order to make the supply rate of the thermal spraying uniform and stable and to uniformly heat the supplied powder, that is, to improve the flowability of the molten particles.

Therefore, since the coating layer 57 having excellent oxidation resistance and durability is formed around the first flare portion 42 and the second flare portion 44 of the pin jig 40 which are frequently exposed and pressurized by the external influence, the first flare The oxidation and damage of the part 42 and the second flare part 44 are prevented, and the maintenance cost is reduced because the life of the product is increased by preventing the damage of the first flare part 42 and the second flare part 44. It is effective.

The flared flange machine of the present invention in this configuration is driven as follows.

First, when the driving motor 20 is driven, the motor shaft 21, the driving pulley 37, the electric belt 39, the electric pulley 38 are rotated, and the electric pulley shaft 31 is rotated.

When the electric pulley shaft 31 is rotated, the pin jig shaft 34 and the pin jig 40 rotated together with the electric pulley shaft 31 by being inclined by 1 to 5 ° with respect to the central axis of the electric pulley shaft 31. do. At this time, the center of the pin jig shaft 34 and the pin jig 40 is inclined 1 to 5 degrees with respect to the center of the electric pulley shaft 31, the center line of the pin jig 40 and the center line of the electric pulley shaft 31 It is arranged to meet each other at the center of the end of the first flare portion 42 of the pin jig (40). Therefore, the pin jig 40 has an eccentricity amplified toward the second flare 44 from the end center.

The pin jig 40 is rotated with little eccentricity occurring at the end of the first flare 42, but the eccentric phenomenon is amplified toward the second flare 44. Therefore, when the cylinder housing 12 of the transfer cylinder 10 is advanced along the cylinder rod 11, the cylinder housing 12, the driving motor 20, the transmission unit 30, and the pin jig 40 are moved to the cylinder housing 12. ) Is transferred to the pipe 1 side, and the end of the pipe 1 is gradually widened as the first flare 42 of the pin jig 40 enters the inside of the pipe 1.

After the end of the pipe 1 is first expanded by the first flare portion 42 of the pin jig 40 and the cylinder housing 12 continues to move forward, the second tapered surface 45 of the second flare portion 44 is formed. ) Opens the extension of the pipe (1) secondly, so that the end of the pipe (1) is in close contact with the inner surface (55) of the forming space (54).

Therefore, at the end of the pipe 1, as shown in FIG. The flange 2 of the pipe 1 thus formed is assembled by coupling the nipple 3 with the nut 4 as shown in FIG. 9.

The flared flange machine of the present invention has the following effects.

First, in the present invention, when the driving motor 20 is driven after the pipe 1 is gripped by the gripping groove 52 of the zigzag 50, the electric pulley shaft 31 is rotated so that the pin jig shaft 34 and the pin are rotated. The jig 40 is rotated. At this time, the pin jig shaft 34 tilted 1-5 ° with respect to the center of the electric pulley shaft 31 and the pin jig 40 are eccentrically rotated to end the pipe 1. Spread outward to form the flange 2.

That is, the first tapered surface 43 of the first flare portion 42 of the pin jig 40 is sequentially contacted around the inner circumferential surface of the end of the pipe 1, and the end of the pipe 1 is opened first, and the pin jig ( The second tapered surface 45 of the second flared portion 44 of 40 is first expanded while being sequentially contacted around the inner circumferential surface of the end portion of the pipe 1 that is primarily expanded to form the flange 2.

Therefore, since the flange 2 is integrally formed at the end of the pipe 1, no welding or the like is required, and thus the pipe 1 integral flange 2 is not easily broken even by external impact or pressure.

Secondly, the flare flange machine of the present invention has oxidation resistance to the first flare 42 and the second flare 44 of the pin jig 40, which is exposed to external influences and the pipe 1 end is continuously pressed. The coating layer 57 which is excellent in durability is formed.

Therefore, since the oxidation and damage of the pin jig 40 is prevented, the life of the pin jig 40 is extended, thereby reducing the maintenance cost.

Third, in the flared flange machine of the present invention, the engaging portion 41 of the pin jig 40 is easily detached from the engaging hole 35 of the pin jig shaft 34.

Therefore, since the pin jig 40 suitable for the forming angle of the flange 2 can be selected and simply joined, the flange 2 of various angles can be formed by using a single flare flange machine, thereby improving the compatibility of the flare flange machine. Greatly improved.

FIG. 10 is a schematic front view showing another embodiment of the flared flange machine of the present invention, FIG. 11 is a schematic front view showing a state where the drive motor and the transfer cylinder are operated, and FIG. 12 is a flange at 37 ° with respect to the center of the pipe. Fig. 13 is a schematic cutaway perspective view showing a state in which a flange of a pipe is connected to a nipple.

The flared flange machine of the present invention is the same as the configuration of the transfer cylinder 10, the drive motor 20, the transmission unit 30 of Figures 1 to 9 and only the pin jig 40 and the zigzag 50 form different. Therefore, detailed descriptions of the transfer cylinder 10, the driving motor 20, and the transmission unit 30 will be omitted, and only the pin jig 40 and the dizig 50 will be described.

The pin jig 40 is coupled to the eccentric coupling hole 32 of the electric pulley shaft 31 so that when the electric pulley shaft 31 is rotated, the coupling part 41 and the coupling part 41 It is integrally provided with one side on one side and coupled with the first flared portion 42, the first tapered surface 43 is formed so as to expand the pipe 1 end primarily while being eccentrically rotated when the electric pulley shaft 31 is rotated. An end portion of the pipe 1 which is provided integrally therewith between the portion 41 and the first flare portion 42 and is first expanded by the first flare portion 42 while being eccentrically rotated during rotation of the electric pulley shaft 31. The second flared portion 44 is formed with a second tapered surface 45 so as to expand the secondary to form the flange 2.

The zigzag 50 has a gripping groove 52 formed to be in close contact with the circumference of the pipe 1 to hold the pipe 1, and tapered with respect to the gripping groove 52 on one side of the gripping groove 52. The formed molding space 54 is formed of a pair of jig body 51 is formed.

The pin jig 40 has one side of the second tapered surface 45 of the second flared portion 44 parallel to one of the tapered surfaces 74 of the molding space 54 when viewed in a side view. The center line of the pin jig 40 and the center line of the electric pulley shaft 31 are disposed to meet each other at the end of the first flare 42 of the pin jig 40.

The flared flange machine of the present invention having such a configuration, the transfer cylinder 10 is driven so that the cylinder housing 12, the drive motor 20, the transmission unit 30, the pin jig 40 together with the cylinder housing 12. When transferred to the pipe 1 side, the end of the pipe 1 is gradually opened by the first tapered surface 43 of the first flare 42 of the pin jig 40.

After the end of the pipe 1 is first expanded by the first flare portion 42 of the pin jig 40 and the cylinder housing 12 continues to move forward, the second tapered surface 45 of the second flare portion 44 is formed. ) Spreads the expansion of the pipe (1) secondly, so that the end of the pipe (1) is in close contact with the tapered surface 74 of the forming space (54).

Therefore, at the end of the pipe 1, as shown in FIG. 12, a flange 2 is formed in a form bent at 37 degrees with respect to the center of the pipe 1. The flange 2 of the pipe 1 thus formed is assembled by assembling the sleeve 5 and the nut 4 to the nipple 3 as shown in FIG.

Thus, the pin jig 40 and the dizig 50 provided with the flange 2 of 37 degrees may be provided in the flare flange machine of this invention.

Therefore, since the pin jig 40 suitable for the forming angle of the flange 2 can be selected and then simply pushed and coupled to the electric drive unit 30, a single flange flange machine can be used to form flanges of various angles. Compatibility is improved.

1: pipe 2: flange
3: nipple 4: nut
5: sleeve 10: transfer cylinder
11: cylinder rod 12: cylinder housing
13 rod guide hole 14 pulley shaft hole
20: drive motor 21: motor shaft
30: electric drive 31: electric pulley shaft
32: eccentric coupling hole 33: pulley shaft bearing
34: pin jig shaft 35: coupling hole
36: thrust ball bearing 37: drive pulley
38: electric pulley 39: electric belt
40: pin jig 41: coupling portion
42: first flare portion 43: first tapered surface
44: 2nd flare part 45: 2nd taper surface
50: zigzag 51: jig body
52: grip groove 53: sleeve groove
54: forming space 55: the inner surface
74: tapered surface

Claims (5)

A cylinder rod 11, one end of which is fixed on the worktable, and a rod guide hole 13 is formed to insert the cylinder rod 11 into one inner side thereof, and a pulley shaft hole 14 is formed in the other inner side thereof. A transfer cylinder 10 formed of a cylinder housing 12 reciprocating along the longitudinal direction of the cylinder rod 11 when hydraulic pressure is supplied to the rod guide hole 13;
A drive motor 20 installed in the cylinder housing 12 of the transfer cylinder 10 and reciprocally transferred together with the cylinder housing 12;
One end is eccentrically coupled to the pulley shaft hole 14 of the cylinder housing 12 and the eccentric coupling hole 32 is formed therein, and one end and the eccentricity of the electric pulley shaft 31. A pulley shaft bearing 33 coupled between the coupling holes 32 to support rotation of the electric pulley shaft 31, and one end of which is coupled to the eccentric coupling hole 32 of the electric pulley shaft 31, It is coupled between the pin jig shaft 34 and the electric pulley shaft 31 and the pin jig shaft 34 in which the coupling hole 35 is formed to support the pressure acting in the axial direction of the pin jig shaft 34. Thrust ball bearing 36, drive pulley 37 coupled to motor shaft 21 of drive motor 20, electric pulley 38 coupled to the other end of motor pulley shaft 31, drive pulley An electric motor 30 formed of an electric belt 39 coupled to the 37 and the electric pulley 38 to transmit the rotational power of the driving motor 20 to the electric pulley shaft 31;
A pin jig 40 having one end coupled to the coupling hole 35 of the pin jig shaft 34 and the other end pressing the end of the pipe 1 to form a flange 2;
The zigzag 50 which is installed on the upper part of the work table and which the pipe 1 is gripped and guides the flange 2 to be formed at the end of the pipe 1 when the pin jig 40 presses the end of the pipe 1. Flare flange machine, characterized in that consisting of.
The method according to claim 1,
Pin jig 40,
The coupling part 41 is coupled to the eccentric coupling hole 32 of the electric pulley shaft 31 so as to be eccentrically rotated when the electric pulley shaft 31 is rotated, and is integrally provided with one side of the coupling part 41. It is integrally connected between the first flare 42 and the coupling part 41 and the first flare 42 which firstly expands the end of the pipe 1 while being eccentrically rotated during the rotation of the electric pulley shaft 31. A second flared portion which is provided and is eccentrically rotated during the rotation of the electric pulley shaft 31 to expand the second end of the pipe 1 first expanded by the first flare 42 to form the flange 2 ( 44);
The zigzag 50,
A gripping groove 52 is formed to be in close contact with the circumference of the pipe 1 so as to grip the pipe 1, and a sleeve groove 53 is formed at one side of the gripping groove 52, and at one side of the sleeve groove 53. A molding space 54 is formed with a diameter larger than the diameter of the sleeve groove 53, and the inner surface 55 of the molding space 54 and the center line of the gripping groove 52 are a pair of jig bodies formed at right angles to each other. (51) and a sleeve (5) coupled to the sleeve groove (53) of the jig body (51) to guide the pipe (1) end to expand toward the molding space (54);
The pin jig 40 is arranged such that one of the second tapered surfaces 45 of one side of the second flared portion 44 is parallel to the inner surface 55 of the molding space 54 when viewed in a side view. Flare flange machine, characterized in that the center line of the pin jig (40) and the center line of the electric pulley shaft (31) are arranged to meet each other at the end of the first flare (42) of the pin jig (40).
The method according to claim 1,
Pin jig 40,
The coupling part 41 is coupled to the eccentric coupling hole 32 of the electric pulley shaft 31 so as to be eccentrically rotated when the electric pulley shaft 31 is rotated, and is integrally provided with one side of the coupling part 41. It is integrally connected between the first flare 42 and the coupling part 41 and the first flare 42 which firstly expands the end of the pipe 1 while being eccentrically rotated during the rotation of the electric pulley shaft 31. A second flared portion which is provided and is eccentrically rotated during the rotation of the electric pulley shaft 31 to expand the second end of the pipe 1 first expanded by the first flare 42 to form the flange 2 ( 44);
The zigzag 50,
A gripping groove 52 is formed to be in close contact with the circumference of the pipe 1 so that the gripping groove 52 can be gripped, and a molding space 54 tapered with respect to the gripping groove 52 is formed at one side of the gripping groove 52. It consists of a pair of jig body 51 is formed;
The pin jig 40 has one side of the second tapered surface 45 of the second flared portion 44 in parallel with one of the tapered surfaces 74 of the molding space 54 in a side view. And a center line of the pin jig (40) and a center line of the electric pulley shaft (31) are arranged to meet each other at an end of the first flare portion (42) of the pin jig (40).
The method according to claim 2 or 3,
The center lines of the eccentric coupling holes 32, pin jig shaft 34, and pin jig 40 are eccentrically formed with respect to the rotation center line of the electric pulley shaft 31, and the eccentric angle is 1 to 5 degrees. Flare Flange Machine.
The first flare portion 42 and the second flare portion 44 of the pin jig 40, according to claim 2 or 3,
Ceramic powder consisting of 96% to 98% of chromium oxide (Cr ₂ O ₃ ) and 2% to 4% of titanium dioxide (TiO ₂ ), chromium oxide (Cr ₂ O ₃ ) powder, aluminum oxide (Al ₂ O ₃ ) powder, Titanium dioxide (TiO ₂ ) powder, yttrium oxide (Y ₂ O ₃ ) powder, zirconia (ZrO ₂ ) powder, chromium nickel (Cr ₃ C ₂ 25 NiCr) powder (chromium carbide 75%, nickel 20%, chromium 5%) Among them, any one kind of powder is provided so as to have a powder particle size of 10 to 44 μm, and the powder having the above-described powder particle size of the first flare portion 42 and the second flare portion 44 of the pin jig 40. Flared flange machine characterized in that the coating layer 57 is formed by spraying around.

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