KR20080006187U - Groove forming device of zinc- plated pipe - Google Patents

Abstract

The present invention relates to a molding apparatus for forming a groove around the outer surface of the pipe so as to couple the joints such as fire extinguishing water pipe, gas pipe, water pipe, drain pipe and the like by coupling, and more particularly, the pipe (1) A guide roller 20 having a groove 23 formed between the inner jaw 21 and the outer jaw 22 and a guide wheel 24 formed on one surface of the outer jaw 22 such that one end of the inner jaw 21 is fitted; A pressure roller 30 positioned on the guide roller 20 to pressurize the pipe 1, and a pressure roller 30 having a guide groove 32 formed on one side thereof; Support rollers 40 and 40 'positioned on both sides of the pressure roller 30 so as to support the pressure roller 30; The groove is provided on one side of the main body 11, the hydraulic cylinder control unit 50 is formed on one side to control the lifting and lowering of the support rollers 40, 40 'and the pressure roller 30 by the hydraulic cylinder 51 As a configuration of the molding apparatus 10, the present invention is to prevent corrosion because the galvanized layer formed on the inner and outer surfaces of the pipe is not damaged, so that the life is long when using the pipe, and the convenience of handling management and the management cost are reduced. The present invention relates to a galvanized pipe groove forming apparatus having a phosphorus effect.

Pipe, groove, galvanized layer, groove forming machine, guide roller, pressure roller

Description

Galvanized Pipe Groove Forming Equipment {GROOVE FORMING DEVICE OF ZINC- PLATED PIPE}

1 is an exemplary embodiment of the present invention, the pipe groove forming apparatus main part extraction example.

Figure 2 is a perspective view showing a state in which the galvanized damaged by the uneven portion on the inner surface of the pipe groove is formed as a conventional embodiment.

Figure 3 is a block diagram showing a pipe groove forming apparatus of the present invention.

Figure 4 is a block diagram showing a state of forming a groove in the pipe by the molding apparatus of the present invention.

5 is a front view showing a molding apparatus of the present invention.

Figure 6a is a perspective view of the pipe grooved by the molding apparatus of the present invention.

Figure 6b is a cross-sectional view of the pipe groove formed by the molding apparatus of the present invention.

Figure 7a is another embodiment of the present invention, an illustration of a molding apparatus showing a state in which the guide projection groove is formed in a half groove.

Figure 7b is a cross-sectional view of the groove formed by the molding apparatus of Figure 7a according to the invention

8 is an exemplary view showing a state in which a pipe is connected with a pipe in which a groove is formed according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: pipe 2: groove

20: guide roller 21: inner jaw

22: outside 23, 23 ': groove

24: Guide wheel 30: Pressure roller

31: Pressure wheel 32: Guide home

40: support roller 50: control unit

51: hydraulic cylinder

The present invention relates to a molding apparatus for forming a groove around the outer surface of the pipe so as to couple the joints, such as fire extinguishing water pipe, gas pipe, water pipe, drain pipe pipe.

More specifically, grooves are formed around the outer surface of the pipe to connect variously used metal pipes with couplings having watertight or airtight packings, and zinc plating is applied to adjacent inner circumferential surfaces when forming grooves with a molding machine around the outer surface of the pipe. The present invention relates to a galvanized pipe groove forming apparatus for forming a groove so that the layer is not damaged, thereby preventing corrosion in the connection part when the pipe is used so that the life of the pipe can be extended.

Conventional pipe groove forming apparatus to form the inner jaw 210 and the outer jaw 220 protruding on both sides of the grooves of the guide roller 200 in which the pipe 100 is fitted as shown in FIG. In order to prevent the pipe 100 is inserted into the embossing projection (100 ') was formed.

In order to form the groove 110 around the outer surface of the pipe by using the molding apparatus configured as described above, one end of the pipe is inserted into the guide roller 200 of the molding apparatus, and the pressure roller 300 is located above the guide roller 200. ) By lowering the hydraulic cylinder to pressurize the pipe outer surface at the same time so that the pressure wheel 310 of the pressure roller 300 enters the groove of the guide roller, and the outer peripheral surface adjacent to the pressure wheel 310 of the pressure roller 300 is The guide rollers 200 and the pressure rollers 300 rotate to form grooves 110 around the outer surface of the pipe in a state in which they are in close contact with both sides of the pressure portions.

The groove formed by the guide roller and the pressure roller is rotated while the upper pressure roller rotates while pressing the outer surface of both grooves of the pipe while the inner circumferential surfaces of the grooves are formed in close contact with the inner and outer jaws of the guide roller. There is a problem that the galvanized layer is damaged by the embossing projection (100 ').

If the galvanized layer of the inner surface is damaged when the groove is formed in the pipe as described above, there is a problem of shortening the life of the pipe due to corrosion on the damaged part when the pipe is used.

Figure 2 shows a state that the mark is left by the embossing projection (100 ') formed on the inner and outer guide roller guide roller on the inner peripheral surface when forming a groove on the outer edge of the pipe by a conventional molding apparatus as the embossing projection marks are formed It shows that the galvanized layer is damaged.

In another embodiment, when welding a pipe without forming a groove, the galvanized layer is damaged by high-temperature welding, which also shortens the life of the pipe.

In addition, referring to the prior art filed in the technical field of the present invention, Patent Application No. 2006-7019907 "Roller tool for forming grooves in a pipe" is a roller tool to form a circumferential groove around the pipe, the roller tool is a rotation axis around And a circumferential surface rotatable at and having a circumferential surface engageable with the pipe, the circumferential surface having a first surface portion oriented substantially in a direction perpendicular to the axis of rotation;

A second surface portion located in a spaced relationship relative to the first surface portion and oriented at an angle with respect to the axis of rotation, and extending between the first surface portion and the second surface portion and oriented substantially parallel to the axis of rotation A roller tool comprising a radially opposing surface portion is disclosed. The patent application 2006-7019907 relates to a roller tool for forming a groove in a pipe. When the first surface portion, the second surface portion and the bottom portion of the roller tool rotate in close contact with each other, friction between the roller tool and the pipe is reduced. Excessive heat generated by friction causes damage to the roller tool and bearing lubricant, which is too hot to handle the roller tool when the tool is exchanged for pipes of different sizes, resulting in thermal damage to the galvanized formed on the outer surface of the pipe. As a result, corrosion of the galvanized layer used afterwards was caused by air and moisture, which shortened the lifespan.

The present invention is designed to solve the above problems, and relates to a molding apparatus for forming a groove around the outer surface of the pipe so as to couple the joints, such as fire extinguishing water pipe, gas pipe, water pipe, drain pipe pipe, etc. by coupling. The grooves are formed around the outer surface of the pipe to connect variously used metal pipes with couplings having watertight or airtight packings. The present invention provides a galvanizing damage prevention pipe groove forming apparatus for the purpose of long-lasting pipe life by preventing corrosion at the connection part when the pipe is used.

In the molding apparatus for forming a groove around the outer surface of the pipe,

A guide roller 20 having a groove 23 formed between the inner jaw 21 and the outer jaw 22 and a guide wheel 24 formed on one side of the outer jaw 22 such that one end of the pipe 1 is fitted to the outer face;

A pressure roller 30 positioned above the guide roller 20 to pressurize the pipe 1, and a pressure roller 30 having a guide groove 32 formed on one side thereof;

Support rollers 40 and 40 'positioned on both sides of the pressure roller 30 so as to support the pressure roller 30;

Is formed on one side of the main body 11, the groove forming the cylinder control unit 50 is formed on one side to control the lifting and lowering of the support rollers 40, 40 'and the pressure roller 30 by the hydraulic cylinder 51 The configuration of the device 10.

The groove of the guide roller is made of a semi-circular groove (23 ') and the pressing wheel 31 of the pressure roller 30 corresponding to this is characterized in that made of a right angle.

The present invention is characterized in that the groove (2) is formed by the groove forming apparatus 10 so as not to damage the galvanized layer around the outer surface of one side of the pipe (1).

Referring to the present invention configured as described in detail based on the accompanying drawings as follows.

 3 is a block diagram showing the pipe groove forming apparatus of the present invention, and shows a connection configuration of the guide roller 20, the pressure roller 30, and the support roller 40 installed in the groove forming apparatus 10 of the present invention. .

According to the present invention, one end of the pipe 1 is fitted to the outer surface of the guide roller 20, and the inner jaw 21 and the outer jaw 22 are supported on the inner surface of the pipe, and the end of the pipe is installed to abut the guide wheel 24. The groove 2 formed in the pipe 1 is always formed at a constant position.

As described above, the pipe 1 fitted to the guide roller 20 has a groove 23 formed between the inner jaw 21 and the outer jaw 22, and a space is formed between the groove and the inner surface of the pipe in a state where the pipe is fitted. The grooves 2 are formed in the pipe when the wheel 31 is pressed.

When the pressure wheel 31 of the pressure roller 30 corresponds to the groove 23 of the guide roller 20 in the state in which the pipe 1 is inserted into the guide roller 20, one side of the guide roller 20 is provided. 24 is located in the guide groove 32 of the pressure roller 30.

Thus, the guide roller 20 and the pressure roller 30 are engaged with each other and rotated in the corresponding direction.

The support rollers 40 and 40 'located on both upper sides of the pressure roller 30 also form a form of engagement with the pressure roller 30, and two support rollers 40 and 40' on both sides of the pressure roller 30. ) Is installed to support the pressure roller 30 that rotates while pressing to prevent flow and shaking.

The pressure roller 30 and the support rollers 40 and 40 'are moved upwards and downwards from the upper part of the guide roller 20 so that when the pipe 1 is inserted into the guide roller 20, the pressure roller 30 and the support roller 40 are moved upwards and widened. 20) After the pipe 1 is inserted into the outer surface, the support rollers 40, 40 'and the pressure roller 30 are lowered so that the pressure wheel 31 of the pressure roller 30 is guide groove 20 groove 23. ) To form a groove (2) in the pipe (1).

The guide roller 20, the pressure roller 30, and the support rollers 40 and 40 ′ are rotated by separate driving devices in engagement with each other.

Figure 4 is a configuration diagram showing a state of forming a groove in the pipe by the molding apparatus of the present invention, the control unit installed on one side of the main body 11 after inserting one end of the metal pipe 1 on the outer surface of the guide roller 20 By operating the 50 to operate the hydraulic cylinder 51 of the upper end of the main body 11 to lower the pressure roller 30 and the support rollers 40, 40 'and the pressure wheel 31 of the pressure roller 30 When the pressure roller 30 and the guide roller 20 are rotated while being inserted into the groove 23 of the guide roller 20, the pressure wheel 31 rotates in a state corresponding to the groove 23 so that the pipe is rotated. The outer edge of (1) is formed with a groove 2 to which the coupling 60 can be coupled.

At this time, the surface rubbed with the pipe 1 corresponds to only the pressing wheel 31 of the pressure roller 30 and the groove 23 of the guide roller 20 to press the pipe 1 and to keep only the other parts in the inserted state. Since it is not pressurized, damage does not occur in the zinc coating formed on the inner and outer surfaces of the pipe 1.

In addition, since the pressure roller 30 is rotated while being supported in the support rollers 40 and 40 'positioned on both upper sides so that the pressure roller 30 can rotate without rotation, the pressure roller 30 can be shaken when pressing the pipe 1. The groove is precisely formed, and even if the pressure roller 30 does not support the outer surface of the pipe 1, the phenomenon in which the pipe 1 does not flow or push in the state where the pipe 1 is fitted in the guide roller 20 does not occur. ), The galvanized layer plated on the outer surface of the pipe is not damaged, so that the life of the pipe (1) is long.

5 is a front view showing the molding apparatus of the present invention, the guide roller 20, the pressure roller 30, two support rollers 40, 40 'in the main body 11 of the pipe groove forming apparatus of the present invention It shows the installed state. Rotation of the support rollers 40 and 40 ', the pressure roller 30, and the guide roller 20 is such that a motor is installed inside the main body 11 to drive the rollers. One configuration and the configuration to control by connecting each component electrically is made in a conventional manner and the description thereof will be omitted.

In the pipe groove forming apparatus of the present invention, when the hydraulic cylinder 51 is operated by operating the control unit 50 on one side, the first and second support rollers 40 and 40 are contracted or extended as the hydraulic seal holder 51 is contracted or extended. ') And the pressure roller 31 serves to space or close contact with the guide roller 20. Therefore, when the pipe is inserted into the guide roller 20, the hydraulic cylinder 51 lifts the support rollers 40 and 40 'and the pressure roller 31, and the support roller 40 when the groove is formed after inserting the pipe. 40 'and the pressure roller 31 are lowered to pressurize the groove to be formed in the pipe.

In addition, the control unit can be replaced by a hydraulic operation key as needed to operate the first and second support rollers 40, 40 'and the pressure roller 31 by stretching the hydraulic cylinder manually.

Figure 6a is a perspective view of the pipe groove formed by the molding apparatus of the present invention, the groove forming apparatus 10 is formed by the groove 2 on the edge of the outer peripheral surface of the pipe galvanized formed on the inner outer surface of the pipe (1) It is shown that only the groove is formed on the outer surface without damaging the layer.

6B is a cross-sectional view of the pipe formed with a groove by the molding apparatus of the present invention, and shows a state in which the groove 2 is formed in the pipe 1.

Figure 7a is an exemplary embodiment of the molding apparatus showing a state in which the grooves of the guide roller is formed in a half groove as another embodiment of the present invention, the groove 23 'of the guide roller 20 is formed in a semi-circular shape so that the groove of the pipe The inner surface is formed to have a semicircular shape, and FIG. 7B is an exemplary cross-sectional view of the pipe in which the groove is formed by the forming apparatus of FIG. 7A.

The pipe formed by the molding apparatus of FIG. 7A has a shape of a groove formed on the outer surface as shown in FIG. 7B at a right angle so that the pipe 60 is solidly detached without being separated when the coupling 60 is coupled, and a semicircle is formed on the inner circumferential surface of the pipe 1. It is made of a form so that the flow of fluid or gas moving in the interior is not disturbed.

8 is an exemplary view illustrating a state in which a groove and a pipe having a groove of the present invention are connected by a coupling, and a connection portion of the pipe 1 and the pipe 1 is coupled to the coupling 60. Coupling 60 is conventional, the packing is formed therein to fasten the coupling 60 through the pipe (1) and the groove formed in the pipe (1) to maintain the watertight or airtight connection of the pipe.

Recently, fire extinguishing water pipes except large water pipes and large sewer pipes. When installing water pipes, domestic gas pipes, water pipes, etc., the pipes are easy to connect and have a beautiful appearance. Therefore, ordinary steel pipes, molten zinc pipes, and stainless steel pipes are used. These pipes prevent corrosion from rust. Despite the fact that the galvanized layer is formed on the inner and outer surfaces to prolong the service life, the groove is mechanically formed to form the joint of the pipe (pipe). At this time, the galvanized layer is damaged by using the groove forming apparatus of the present invention. The grooves are formed so that the pipes are beautiful in appearance and have a long life without corrosion.

According to the present invention, the galvanizing layer formed on the inner and outer surfaces of the pipe is not damaged by forming the pipe groove forming apparatus by forming the guide roller, the pressure roller, and the support roller so that only the pressure wheel of the pressure roller is pressed into the groove of the guide roller when the pipe is pressurized. As it prevents corrosion, it prevents corrosion and prevents frequent replacement and repair. It also has an economical effect by reducing the convenience and management cost of handling management.

Claims (2)

In the molding apparatus for forming a groove around the outer surface of the pipe, A guide roller 20 having a groove 23 formed between the inner jaw 21 and the outer jaw 22 and a guide wheel 24 formed on one side of the outer jaw 22 such that one end of the pipe 1 is fitted to the outer face; A pressure roller 30 positioned above the guide roller 20 to pressurize the pipe 1, and a pressure roller 30 having a guide groove 32 formed on one side thereof; Support rollers (40, 40 ') positioned on both sides of the pressure roller (30) to support the pressure roller (30); It is installed on one side of the main body 11 is characterized in that the cylinder control unit 50 is formed on one side to control the lifting and lowering of the support rollers 40, 40 'and the pressure roller 30 by the hydraulic cylinder 51. Galvanized pipe groove forming apparatus. According to claim 1, The groove of the guide roller is made of a semi-circular groove (23 ') and the pressing wheel 31 of the pressure roller 30 corresponding to the galvanized pipe groove forming apparatus, characterized in that made of a right angle.

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