KR20130133539A - Striping apparatus for steel pipe - Google Patents

Abstract

The present invention relates to a striping device for a steel pipe which strips a plating layer plated on the surface of a steel pipe and comprises; a housing having a handle which can grip; a cutting machine which moves along the border of the steel pipe with the housing by the control of the handle and cuts the outer circumference surface of the border and eliminates the plating layer; and a guider which is placed on the housing and adheres to the inner and outer circumference surfaces of the steel pipe and movably grips the border of the steel pipe and combines the housing to the border of the steel pipe and moves along the circumference direction of the steel pipe by the movement of the housing while gripping the steel pipe and guides the movement of the cutting machine. According to the present invention the plating layer is eliminated by cutting the outer circumference surface of the steel pipe by the cutting machine moving along the border of the steel pipe with the housing. Therefore, combustion gas which is harmful to the human body is not generated and, especially, the plating layer plated in the border of the steel pipe is regularly eliminated because the movement of the cutting machine is guided by the guider.

Description

Stripping Apparatus for Steel Pipes {STRIPING APPARATUS FOR STEEL PIPE}

The present invention relates to a peeling apparatus for steel pipes, and more particularly, a peeling apparatus for steel pipes, which allows the end of the steel pipe to be easily welded to an object by peeling a plating layer such as zinc plating, which is plated on the surface of the steel pipe, from the end of the steel pipe. It is about.

In general, a steel pipe such as a pipe is provided with a plating layer such as galvanized on the surface to prevent corrosion. Zinc has a higher reactivity than steel, and since it is oxidized before steel to prevent corrosion of the steel to improve the durability of the steel pipe, and also improve the appearance (gloss) of the steel pipe is widely used.

When such a steel pipe is connected to another steel pipe or connected to a member such as a flange, the end of the edge is fixed to the object mainly by welding. At this time, the steel pipe can be welded to the object smoothly only if the galvanized layer plated on the edge is removed.

In general, in order to smoothly weld a steel pipe, a galvanized layer plated on the welded portion of the steel pipe is burned with an oxygen welder to remove the steel pipe from the steel pipe.

However, the conventional method of removing the galvanized layer as described above has the problem of threatening the health of the operator because the combustion gas of zinc is generated by burning the zinc, the welding site is not possible uniform removal of the galvanized layer by combustion. Since the other galvanized layer is removed, there is a problem that the corrosion resistance of the steel pipe is lowered.

In addition, the conventional removal method has a hassle to perform a separate process to improve the appearance because the burned portion of the galvanized layer is blackened so that the aesthetic appearance is reduced.

The present invention has been made to solve the problems of the prior art as described above, to provide a stripping device for a steel pipe that can be uniformly peeled from the steel pipe by cutting along the edge of the steel pipe without burning the plating layer plated on the steel pipe. For that purpose.

In particular, it is an object of the present invention to provide a peeling apparatus for a steel pipe that can peel the plated layer while guiding the movement of the cutting machine through a means for movably holding the edge of the steel pipe.

Steel pipe peeling device of the present invention for achieving the above object, the steel pipe peeling device for peeling the plating layer plated on the surface of the steel pipe, the gripper handle housing is provided; A cutting machine provided in the housing and cutting the outer circumferential surface of the edge while moving along the edge of the steel pipe together with the housing under the control of the handle; And provided in the housing so as to be in close contact with the outer circumferential surface and the inner circumferential surface of the steel pipe so as to move the edge of the steel pipe so as to be movable, to couple the housing to the edge of the steel pipe, and to hold the steel pipe by moving the housing. It includes; guider to guide the movement of the cutting machine while moving along the circumferential direction of the steel pipe.

The cutting machine may be, for example, a rotating motor coupled to the housing to provide a rotational force; At least one horizontal cutting blade coupled to a rotating shaft of the rotating motor and cutting the plating layer while rotating in a horizontal state facing the outer circumferential surface of the steel pipe; And a cutter elevator connecting the rotary motor to the housing so as to lift and lower the rotary motor, while bringing the horizontal cutting blade into close contact with the outer circumferential surface of the steel pipe.

The cutter elevator may include, for example, a cutter rail provided in a vertical direction to the housing and movably coupled to the rotary motor to guide the lifting and lowering of the rotary motor along a vertical direction; One end is rotatably coupled to the housing, the other end is fastened to the rotary motor and the lead screw for lifting the rotary motor along the cutter rail while towing the rotary motor by the rotation; have.

In addition, the cutting machine is coupled to the rotary shaft of the rotary motor in a state adjacent to the horizontal cutting edge, at least one inclination for cutting the end of the steel pipe in an inclined state while rotating facing the edge of the steel pipe in an inclined state. It can be configured to further include a cutting edge.

The guider may include, for example, at least one first roller rotatably provided in the housing to rotate in close contact with an outer circumferential surface of the steel pipe; At least one second roller rotatably provided in the housing to face the first roller and rotate in a state of being in close contact with an inner circumferential surface of the steel pipe; And connecting at least one of the first roller and the second roller to the housing so as to lift and lower the first roller or the second roller while lifting the first roller or the second roller according to the thickness of the steel pipe. It may be configured to include; a roller elevator in close contact with the steel pipe.

The roller elevator may include, for example, a roller housing in which the first roller or the second roller is rotatably coupled; A roller rail provided in the vertical direction to the housing, the roller housing being movably coupled to guide the lifting and lowering of the roller housing along the vertical direction; And a lifting screw rotatably coupled to one end of the housing, the other end being coupled to the roller housing, and elevating the roller housing along the roller rail while pulling the roller housing by rotation. have.

In addition, the present invention, the cutting area of the steel pipe by the cutter while the housing coupled to the edge of the steel pipe by the guider adjacent to the edge of the steel pipe or spaced apart from the edge of the steel pipe according to the thickness of the steel pipe. Gender to control the; can be configured to include more.

For example, the gender may be detachably coupled to the guider to protrude toward the front of the housing, the edge of the steel pipe may be in close contact, and the protruding block may vary in protruding length while being exchanged according to the thickness of the steel pipe. .

According to the peeling device for steel pipes of the present invention as described above, since the outer peripheral surface of the steel pipe is cut by the cutting machine moving along the edge of the steel pipe together with the housing to remove the plating layer, combustion gas harmful to the human body does not occur, Since the movement is guided by the guider, the plating layer plated on the edge of the steel pipe can be uniformly removed.

In addition, since the horizontal cutting blade constituting the cutting machine is lifted by the cutter elevator, it is possible to cut the plated layer in close contact with the outer peripheral surface of the steel pipe in accordance with the thickness of the steel pipe.

Specifically, since the rotary motor for rotating the horizontal cutting blade moves along the cutter rail by the traction of the lead screw, the horizontal cutting blade can be stably elevated.

In addition, since the inclined cutting edge is provided in the cutting machine to cut the end of the steel pipe in an inclined state, it is possible to easily form a welding groove for welding at the end of the steel pipe.

In addition, since the first roller and the second roller constituting the guider rotate in a state of being in close contact with the outer and inner circumferential surfaces of the steel pipe to grip the rim of the steel pipe, the movement of the cutting edge can be stably guided, and the roller is moved by the roller elevator. As the steel pipe is raised and lowered, the roller can firmly grip the edge of the steel pipe.

Specifically, since the roller housing combined with the roller moves along the roller rail by the pulling of the lifting screw, the roller may be stably lifted.

In addition, the cutting area of the steel pipe by the cutting edge can be controlled as the housing is adjacent to or spaced apart from the edge of the steel pipe by gender.

Specifically, since the close block constituting the gender is exchanged with the protruding length corresponding to the thickness of the steel pipe to control the separation distance between the housing and the steel pipe, the inclined cutting blade may be inclinedly cut only a part of the end of the steel pipe to form a welding groove.

1 is a perspective view showing a peeling device for a steel pipe according to the present invention.
Figure 2 is a rear perspective view showing a peeling device for a steel pipe shown in FIG.
3 is a cutaway perspective view showing the configuration of the cutting machine shown in FIG.
4 is an enlarged perspective view showing the cutting edge shown in FIG.
Fig. 5 is a bottom perspective view showing the configuration of the guider shown in Fig. 1.
6 is a schematic diagram showing the action of the gender shown in FIG.
7 is a front view showing a peeling device for a steel pipe shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

Steel pipe peeling apparatus according to the present invention can be configured to include a housing 10, a cutting machine 20 and the guider 30 as shown in FIG.

The housing 10 is a member forming a body, and as shown in FIG. 1, a grippable handle 11 is provided and transported by the handle 11, and the handle 11 is operated when the cutter 20 is described below. Movement is controlled.

The cutting machine 20 is a component for cutting the outer circumferential surface of the steel pipe p and peeling the plating layer p1 while moving along the rim of the steel pipe p together with the housing 10 under the control of the handle 11. As shown in FIG. 1, the rotary motor 21, the horizontal cutting blade 23, and the cutter elevator 25 may be configured to be included.

The rotary motor 21 is coupled to the housing 10 by a cutter elevator 25 to be described later, as shown in Figure 2 to provide a rotational force. On the other hand, the handle 11 described above may be fixed to the rotation motor 21 as shown in FIG.

Horizontal cutting blade 23 is a member that is coupled to the rotary shaft 21a of the rotary motor 21 as shown in Figure 1 while rotating the outer peripheral surface of the steel pipe (p) in a horizontal state to peel off the plating layer (p1) As shown in FIG. 3, the motor rotates via a reduction gear 21c connected to the drive shaft 21b of the rotation motor 21.

This horizontal cutting blade 23 is composed of a plurality of bite tip coupled to the rotary shaft 21a as shown in Figure 4, as shown in the lower end of Figure 4 facing the outer peripheral surface of the steel pipe (p) in a horizontal state While rotating, the plating layer p1 plated on the outer circumferential surface of the steel pipe p is cut and removed.

Cutter elevator 25 is a horizontal cutting blade 23 coupled to the rotary shaft 21a of the rotary motor 21 while elevating the rotary motor 21 by connecting the above-described rotary motor 21 to the housing 10 to lift. ) Is a component in close contact with the outer peripheral surface of the steel pipe (p) as shown in FIG. The cutter elevator 25 may include, for example, a cutter rail 25a and a lead screw 25b as shown in FIG. 2.

As shown in FIG. 2, the cutter rail 25a protrudes in a vertical direction to one surface of the housing 10, and is coupled to be movable in a state in which a portion of the rotary motor 21 is fitted to lift the rotary motor 21. To guide.

As shown in FIG. 2, the lead screw 25b is coupled to the rotary motor 21 at one end thereof in a state in which one end thereof is rotatably fixed to the housing 10, thereby pulling the rotary motor 21 by rotation. That is, the rotary motor 21 moves up and down along the cutter rail 25a by the rotation of the lead screw 25b.

Therefore, the horizontal cutting blade 23 is in close contact with the outer circumferential surface of the steel pipe p while being lifted by the operation of the cutter elevator 25 according to the diameter of the steel pipe p or the thickness of the plating layer p1 as shown in FIG. 7. Can be.

On the other hand, the cutting machine 20 may be configured to further include an inclined cutting edge 27 as shown in FIG.

The inclined cutting edge 27 is provided on the rotating shaft 21a of the rotary motor 21 in a state adjacent to the horizontal cutting edge 23 as shown in FIG. 4, and as shown at the bottom of the steel pipe p. Face to the edge and inclined.

This inclined cutting edge 27 is composed of a plurality of bite tip coupled to the rotating shaft (21a) as shown in Figure 4, as shown at the bottom of the steel pipe (p) as it rotates while forming an inclination with the edge of the steel pipe (p) Cut the end of (p) in an inclined state.

Therefore, the steel pipe (p) can be easily welded as the end is cut in an inclined state by the inclined cutting edge 27 so that a welding groove is formed in the facing portion while facing the end of another steel pipe.

The guider 30 movably grips the rim of the steel pipe p as shown in FIG. 7 to movably couple the housing 10 to the rim of the steel pipe p, and grips the rim of the steel pipe p. It is a component that guides the movement of the cutting machine 20 while moving along the circumferential direction of the steel pipe p in one state. Such a guider 30 may include, for example, a first roller 31, a second roller 33, and a roller elevator 35 as illustrated in FIGS. 5 and 7.

As shown in FIG. 5, the first roller 31 is rotatably provided in the housing 10 to rotate in close contact with the outer circumferential surface of the steel pipe p. As shown in FIG. 7, the first roller 31 is preferably provided in a symmetrical state on both sides of the horizontal cutting edge 23 and the inclined cutting edge 27 constituting the cutting machine 20.

As shown in FIG. 5, the second roller 33 is movable to the housing 10 in a state opposite to the first roller, and rotates in close contact with the inner circumferential surface of the steel pipe p as shown in FIG. 7. do.

The roller elevator 35 couples at least one of the first roller 31 and the second roller 33 to the housing 10 so as to be lifted and lowered, and according to the thickness of the steel pipe p, the first roller 31 or As a component for elevating the second roller 33 in close contact with the steel pipe p, for example, as shown in FIG. 5, the roller housing 35a, the roller rail 35b, and the lifting screw 35c are configured. can do.

 The roller housing 35a is coupled to the housing 10 with the second roller 33 rotatably installed as shown in FIG. 5.

As shown in FIG. 5, the roller rail 35b protrudes in a vertical direction to one surface of the housing 10 and is movably coupled with a portion of the roller housing 35a fitted thereto to lift the roller housing 35a. To guide.

As shown in FIG. 5, the lifting screw 35c is coupled to the roller housing 35a with one end thereof rotatably fixed to the housing 10 to pull the roller housing 35a by rotation. That is, the roller housing 35a moves up and down while the lifting screw 35c moves along the roller rail 35b by rotation.

Therefore, the second roller 33 may be in close contact with the inner circumferential surface of the steel pipe p while being lifted by the roller elevator 35 according to the thickness of the steel pipe p as shown in FIG. 7.

In summary, the guide roller 30 is in close contact with the outer circumferential surface of the steel pipe p by the first roller 31, and the second roller 33 is together with the roller housing 35a by the rotation of the lifting screw 35c. The edge of the steel pipe p is movably gripped as it rises and comes into close contact with the inner circumferential surface of the steel pipe p. As the housing 10 moves under the control of the handle 11, the edge of the steel pipe p is gripped. The movement of the horizontal cutting blade 23 and the inclined cutting blade 27 is guided while moving to the state.

Thereby, the horizontal cutting edge 23 and the inclined cutting edge 27 can cut the edge of the steel pipe p uniformly.

On the other hand, the peeling device for a steel pipe according to the present invention may further comprise a gender 40 as shown in FIG.

Gender 40 is a component for controlling the cutting area of the steel pipe (p) by the cutting machine 20 while adjoining or spaced apart from the rim of the steel pipe (p), shown in Figures 5 and 7 As described above, the contact block 41 may be detachably coupled to the roller housing 35a constituting the guider 30.

The close contact block 41 is formed in a channel shape as shown in FIG. 5 and is fixed to the roller housing 35a and fixed by the fixing bolt 43 as shown in FIG. 7 together with the roller housing 35a. Go up and down. As shown in FIG. 5, the close block 41 protrudes toward the front of the housing 10, and the edge of the steel pipe p is in close contact, and is exchanged according to the thickness of the steel pipe p as shown in FIG. 6. As the protruding length is varied, the housing 10 and the cutting edges 23 and 27 are adjacent or spaced apart from the edge of the steel pipe p.

Specifically, as shown in (a) of FIG. 6, when the thickness T of the steel pipe p is thin, the close contact block 41 is replaced with a block having a long protrusion length L, thereby forming an edge of the steel pipe p. Spaced apart from the housing 10 not shown. On the contrary, when the thickness T of the steel pipe p is thick as shown in FIG. 6B, the close contact block 41 is replaced with a block having a short protruding length L and thus the edge of the steel pipe p. Adjacent to the housing 10 not shown.

Accordingly, the inclined cutting edge 27 can form a welding groove at the end of the steel pipe p by inclining only a part of the end of the steel pipe p as shown in FIGS. 6A and 6B. .

In addition, when the close contact block 41 is replaced with a block having a protruding length L longer than the block shown in FIG. The outer circumferential surface of the steel pipe p may be cut only by the blade 23.

It describes the operation and action of the peeling device for a steel pipe of the present invention comprising the components as described above.

The housing 10 is coupled to the rim of the steel pipe p by the guider 30 while being carried by the handle 11. In this case, as shown in FIG. 7, the lifting roller 35c constituting the roller elevator 35 rotates while the first roller 31 is in close contact with the outer circumferential surface of the steel pipe p as shown in FIG. 7. Accordingly, the roller rail 35b is in close contact with the inner circumferential surface of the steel pipe p while rising along the roller rail 35b.

Subsequently, the horizontal cutting edge 23 closely adheres to the outer circumferential surface of the steel pipe p as shown in FIG. 4 while descending along the cutter rail 25a as the lead screw 25b constituting the cutter elevator 25 rotates. The outer peripheral surface of the steel pipe p is cut while rotating by the operation of the rotary motor 21 to peel off the plating layer p1 from the steel pipe p.

Meanwhile, as shown in FIG. 4, the inclined cutting edge 27 rotates together with the horizontal cutting edge 23 to cut the end of the steel pipe p in an inclined state. At this time, the close contact block 41 constituting the gender 40 has a thickness (T) of the steel pipe (p) so that only a portion of the end of the steel pipe (p) is cut by the inclined cutting edge 27 as shown in FIG. It is exchanged with the corresponding protruding length (L) is in close contact with the rim of the steel pipe (p) in a state coupled to the roller housing (35a).

Then, the horizontal cutting blade 23 and the inclined cutting blade 27 moves along the rim of the steel pipe p together with the housing 10 by the control of the handle 11 of the plating layer p1 and the steel pipe p. Cut the end. At this time, the horizontal cutting blade 23 and the inclined cutting blade 27 is rotated in a state in which the first roller 31 and the second roller 33 hold the edge of the steel pipe (p) as shown in FIG. The steel pipe (p) is cut while moving stably.

When the cutting operation is completed, the horizontal cutting blade 23 and the inclined cutting blade 27 are spaced apart from the outer circumferential surface of the steel pipe p by the rotation of the lead screw 25b, the housing 10 of the elevating screw 35c As the second roller 33 is spaced apart from the inner circumferential surface of the steel pipe p by the rotation, the second roller 33 is separated from the edge of the steel pipe p.

As described above, the peeling apparatus for steel pipes according to the present invention removes the plating layer p1 by cutting the outer circumferential surface of the steel pipe p by the cutting machine 20 moving along the edge of the steel pipe p together with the housing 10. The combustion gas harmful to the human body does not occur, and in particular, since the movement of the cutting machine 20 is guided by the guider 30, the plating layer p1 plated on the edge of the steel pipe p may be uniformly removed.

In addition, since the horizontal cutting blade 23 constituting the cutting machine 20 is elevated by the cutter elevator 25, the horizontal cutting blade 23 is in close contact with the outer circumferential surface of the steel pipe p according to the thickness of the steel pipe p. The plating layer p1 can be cut.

Specifically, since the rotary motor 21 for rotating the horizontal cutting blade 23 moves along the cutter rail 25a by the pull of the lead screw 25b, the horizontal cutting blade 23 may be stably elevated.

In addition, since the inclined cutting edge 27 is provided in the cutting machine 20, the end of the steel pipe p is cut in an inclined state, thereby easily forming a welding groove for welding at the end of the steel pipe p.

Further, since the first roller 31 and the second roller 33 constituting the guider 30 rotate in close contact with the outer circumferential surface and the inner circumferential surface of the steel pipe p to hold the edge of the steel pipe p, the cutting edge ( 23) (27) can be stably guided, the rollers 31, 33 are in close contact with the steel pipe while lifting by the roller elevator 35, so that the rollers 31, 33 are the edge of the steel pipe (p) It can hold firmly.

Specifically, since the roller housing 35a to which the second roller 33 is coupled moves along the roller rail 35b by the pulling of the elevating screw 35c, the second roller 33 may be stably elevated.

In addition, the cutting area of the steel pipe p by the cutting edges 23 and 27 can be controlled as the housing 10 is adjacent to or spaced apart from the edge of the steel pipe p by the gender 40.

Specifically, the close contact block 41 constituting the gender 40 is replaced with a protrusion length L corresponding to the thickness T of the steel pipe p to control the separation distance between the housing 10 and the steel pipe p. Therefore, the inclined cutting edge 27 may be inclined cutting only a part of the end of the steel pipe (p) to form a welding groove.

While specific embodiments of the present invention have been described above by way of example, these are for illustrative purposes only and are not intended to limit the protection scope of the present invention. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made therein without departing from the spirit of the invention.

10 housing 11 handle
20: cutting machine 21: rotating motor
21a: rotating shaft 21b: driving shaft
21c: reduction gear 23: horizontal cutting blade
25: cutter elevator 25a: cutter rail
25b: Lead screw 27: Inclined cutting edge
30: guider 31: the first roller
33: second roller 35: roller elevator
35a: roller housing 35b: roller rail
35c: Lifting screw 40: Gender
41: contact block

Claims (8)

In the peeling device for steel pipes to peel the plated layer plated on the surface of the steel pipe,
A housing provided with a grippable handle;
A cutting machine provided in the housing and cutting the outer circumferential surface of the edge while moving along the edge of the steel pipe together with the housing under the control of the handle; And
The steel pipe is provided in the housing to be in close contact with the outer circumferential surface and the inner circumferential surface of the steel pipe so as to move the edge of the steel pipe so as to be movable, to couple the housing to the edge of the steel pipe, and to move the housing while holding the steel pipe. And a guider for guiding the movement of the cutting machine while moving along the circumferential direction of the steel pipe peeling apparatus. According to claim 1, The cutting machine,
A rotating motor coupled to the housing to provide a rotational force;
At least one horizontal cutting blade coupled to a rotating shaft of the rotating motor and cutting the plating layer while rotating in a horizontal state facing the outer circumferential surface of the steel pipe; And
And a cutter elevator connecting the rotary motor to the housing so as to lift and lower the rotary motor to closely contact the horizontal cutting blade to the outer circumferential surface of the steel pipe. The method of claim 2, wherein the cutter elevator,
A cutter rail provided in the vertical direction in the housing and movably coupled to the rotary motor to guide the lifting and lowering of the rotary motor along a vertical direction; And
One end is rotatably coupled to the housing, the other end is fastened to the rotary motor is a lead screw for lifting the rotary motor along the cutter rail while pulling the rotary motor by rotation; stripping device for a steel pipe comprising a . According to claim 2, The cutting machine,
At least one inclined cutting edge coupled to the rotating shaft of the rotary motor in a state adjacent to the horizontal cutting edge and cutting the end portion of the steel pipe in an inclined state while rotating in an inclined state with the edge of the steel pipe; Peeling device for steel pipe. The apparatus according to claim 1,
At least one first roller rotatably provided in the housing to rotate in close contact with an outer circumferential surface of the steel pipe;
At least one second roller rotatably provided in the housing to face the first roller and rotate in a state of being in close contact with an inner circumferential surface of the steel pipe; And
At least one of the first roller and the second roller is connected to the housing so as to be elevated, and the first roller or the second roller while lifting the first roller or the second roller according to the thickness of the steel pipe to the steel pipe Peeling device for a steel pipe comprising; roller elevator in close contact with. The method of claim 5, wherein the roller elevator,
A roller housing in which the first roller or the second roller is rotatably coupled;
A roller rail provided in the vertical direction to the housing, the roller housing being movably coupled to guide the lifting and lowering of the roller housing along the vertical direction; And
One end rotatably coupled to the housing, the other end is fastened to the roller housing lifting the screw to lift the roller housing along the roller rail while pulling the roller housing by rotation; peeling device for a steel pipe . The method of claim 1,
A gender for controlling the cutting area of the steel pipe by the cutter while adjoining the housing coupled to the edge of the steel pipe by the guider or being spaced apart from the edge of the steel pipe according to the thickness of the steel pipe; Separation device for a steel pipe further comprising. The method of claim 7, wherein the gender is
And a protruding block detachably coupled to the guider and protruding toward the front of the housing to closely contact the edge of the steel pipe and varying the protruding length while being exchanged according to the thickness of the steel pipe.

Images