KR101722697B1 - Locating device of guiding roller at steel pipe coiling machine - Google Patents

Locating device of guiding roller at steel pipe coiling machine Download PDF

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Publication number
KR101722697B1
KR101722697B1 KR1020170006375A KR20170006375A KR101722697B1 KR 101722697 B1 KR101722697 B1 KR 101722697B1 KR 1020170006375 A KR1020170006375 A KR 1020170006375A KR 20170006375 A KR20170006375 A KR 20170006375A KR 101722697 B1 KR101722697 B1 KR 101722697B1
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KR
South Korea
Prior art keywords
steel pipe
roll
adjusting means
buttress
steel
Prior art date
Application number
KR1020170006375A
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Korean (ko)
Inventor
정성만
김흥대
Original Assignee
주식회사 픽슨
주식회사 픽슨이앤씨
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Priority to KR1020170006375A priority Critical patent/KR101722697B1/en
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Publication of KR101722697B1 publication Critical patent/KR101722697B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/126—Supply, or operations combined with supply, of strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/128—Control or regulating devices

Abstract

The present invention relates to a corrugated steel pipe forming apparatus guide roller position adjusting apparatus and a corrugated steel sheet forming apparatus in which a steel plate S having a constant cross section is spirally coiled and formed with first and second core portions SL1 And the second core portion SL2 are engaged with each other to form a cylindrical steel pipe SP, the first core portion SL1 and the second core portion SL2 are coupled to each other, The guide rollers are provided at front and rear sides of the deeper deeper joint 310 and the guide rollers are provided with a lead roll 320 at the front to support the lower surface of the steel sheet S to be introduced, The buttress roll part 330 is provided at the rear of the steel plate so that the steel plate passed through the steel plate is helically coiled. The steel plate S is lifted up by the first height adjusting unit 321 so that the height of the steel plate S is adjusted vertically. Is provided on the lead roll support portion 322, The buttress roll portion 330 is provided with the buttress roll support portion 332 so that the diameter of the spirally coiled steel pipe is adjusted so that the buttress roll portion 330 is moved forward and backward , The guiding rollers of the corrugated steel pipe forming machine can be finely adjusted by the height and the horizontal distance desired by the operator, thereby facilitating the work in the process of spirally winding the steel pipe and improving the quality of the steel pipe. ≪ / RTI >

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a guide roller positioning device for a corrugated steel pipe,

The present invention relates to a corrugated steel pipe forming machine, and more particularly, to a guiding roller positioner of a corrugated steel pipe forming machine provided with a rocking core portion for engaging a corrugated portion of a formed steel plate with a certain cross section.

Generally, it is inconvenient to carry and handle by the weight and volume increase of the concrete hume pipe which is used for roads, harbors, sewage terminal treatment plants, etc., and it is required to input the heavy equipment at the time of construction. The construction time is limited due to the freezing of the base cement and the connection part, and the construction period is lengthened due to the increase of the connection part, thereby increasing the overall construction cost.

In addition, the concrete hume pipe is excellent in strength, but is vulnerable to external shocks during transportation and construction and easily cracks or breaks. For this reason, recently, a corrugated steel pipe having a spiral waveform (or wrinkle) formed on its surface by using a galvanized steel sheet excellent in high external pressure resistance strength, durability and workability is mainly used for general drain pipes, domestic sewage pipes, There is a trend.

Such corrugated steel pipes are widely applied as drainage of wastewater, water supply of living or industrial water, and hollow formwork or architectural suit in the field of construction. In recent years, due to increase in recognition of manpower, cost, It is attracting attention as a substitute for concrete drainage pipes.

In the apparatus for manufacturing corrugated steel tubes, an uncoiler, a roll forming machine and a corrugated steel pipe forming machine are provided for each process sequence. Such a conventional corrugated steel pipe manufacturing apparatus and corrugated steel pipe forming machine are disclosed in Korean Patent Registration No. 10-0286523 entitled " Method and Apparatus for Manufacturing a Spirally-wound Fixed Coupling Tube, Quot;). Concretely, when a steel sheet rolled in a rolled state by an uncoiler is unwound and passes through a roll forming machine, a plurality of corrugations (or corrugations) are formed between the corrugated deep portions formed at one side and the other side edge of the steel sheet in the width direction . Thereafter, the formed steel plate is coiled spirally by the corrugated steel pipe forming machine, and is joined so that the deep portion of the steel plate, which is the boundary portion of the steel plate, is engaged with each other, thereby finally completing the cylindrical steel pipe.

However, in the conventional corrugated pipe molding machine as in the prior art documents, there is no device for finely adjusting the position of the guide rollers provided at the front and rear sides of the corrugated steel pipe forming machine so as to support and press the introduced steel plates, The guide rollers can not be adjusted as precisely as possible, so that the work is complicated in the process of spirally coiling the steel pipe and the quality of the finally produced corrugated steel pipe becomes poor.

In order to solve the above problems, according to the present invention, the guide roller of the corrugated steel pipe forming machine can be finely adjusted by the height and horizontal distance desired by the operator, The present invention has been made to solve the above-mentioned problems occurring in the prior art.

In order to achieve the above-mentioned object, the present invention provides a corrugated steel pipe forming apparatus guide roller position adjusting apparatus comprising: a guide member for guiding a corrugated steel sheet, which is formed by coiling a steel sheet S formed in a certain cross section in a spiral manner, (EN) A corrugated steel pipe forming machine (30) for forming a cylindrical steel pipe (SP) by engaging a first core (SL1) and a second core (SL2) A guide rollers are provided at front and rear sides of the lock deep joints 310 to which the guide rollers SL2 are coupled and the guide rollers are provided with a lead roll 320 at the front to support the lower surface of the steel sheet S to be introduced, The buttress roll portion 330 is provided at the rear so that the steel sheet passed through the joint 310 is spirally coiled so that the height of the incoming steel sheet S is adjusted to the first height The adjusting means 321 is connected to the lead roll The buttress roll portion 330 is provided with a buttress roll support portion 332 and a first horizontal adjustment means 331 so as to adjust the diameter of the spirally coiled steel pipe, 330 are moved in the forward and backward directions.

The first height adjusting means 321 of the lead roll support portion 322 is provided by a screw cam transferring method.

The first height adjusting means 321 is provided with a lower slide 324 which moves in the horizontal direction while the screw 323 rotates and the lower slide 324 is inclined against the lower slide 324, And an upper slide 325 which is adjusted in the vertical direction as it moves in the lateral direction.

The buttress roll support portion 332 is provided with a second height adjusting means 333 for finely adjusting the diameter of the steel pipe coiled spirally.

In addition, the second height adjusting means 333 of the buttress roll support portion 332 is provided in a thin cylinder manner and is closely contacted in the vertical direction.

Further, the second height adjusting means 333 is characterized in that two thin cylinders 333a and 333b are provided so as to overlap each other.

An upper driving roll portion 311 and a lower driving driving roll portion 312 are connected to upper and lower portions of the lock deep coupling portion 310 so as to abut against the upper and lower surfaces of the steel plate S passing through the reed roll portion 320 The upper and lower deep seals 311 and 314 are provided on one side of the upper driving roll 311 and the lower driving roll 312, The fixed base frame 350 is provided with a rickshoulder receiving portion 360 for connecting the lower driving roll portion 312 and the lower rack shaft 314 to each other, And a third height adjusting means 361 is provided to closely contact the lower surface of the steel sheet S to be brought into contact with the righthander receiving portion 360.

In addition, the third height adjusting means 361 of the righthander receiving portion 360 is provided by a hydraulic screw jack method.

A second horizontal adjustment means 362 is provided on the upper left bank seal portion 360 so that the lower right bank seal 314 pressing the first and second rigid portions SL1 and SL2 is adjusted in the left- .

The second horizontal adjusting means 362 includes a guide plate 363 symmetrical in the left and right direction and a moving plate 364 slid along the guide groove 363-1 provided in the guide plate 363, And the moving plate 364 is fixed to the screw 366 provided to pass through the hole 365-1 provided in the screw plate 365 and is adjusted in the left and right direction.

By the above-described solution, the guide rollers of the corrugated steel pipe forming machine can be finely adjusted by the height and the horizontal distance desired by the operator, so that the work is facilitated in the process of spirally winding the steel pipe, and the quality of the steel pipe is improved There is an advantage.

In particular, the guide roll of the present invention can be finely adjusted by the screw cam transporting method of the lead roll portion, so that the height of the precision steel sheet can be adjusted, and the buttress roll portion of the guide roller can be horizontally moved forward and backward The lower surface of the steel sheet to be coiled can be closely contacted and supported, thereby improving the movement of the buttress roll portion.

In addition, it is possible to move the steel roller in a right-and-left direction so as to set the position of the steel roller precisely as well as up and down to move the steel plate by the ruck-roll support part of the present invention, And there is an advantage that the quality is excellent.

FIG. 1 is a view showing an overall appearance of a corrugated steel pipe manufacturing apparatus according to a process sequence. FIG.
2 is a plan view of a molding machine in a corrugated steel pipe manufacturing apparatus.
3 is a side view of a molding machine in a corrugated steel pipe manufacturing apparatus.
4 is a front view of a molding machine in a corrugated steel pipe manufacturing apparatus.
FIG. 5 is a view showing a guide roller positioning device according to an embodiment of the present invention.
FIG. 6 is a front view of a lead roll portion of a corrugated steel pipe forming apparatus guide roller position adjusting apparatus according to an embodiment of the present invention.
7 is a side view of the buttress roll portion of the corrugated steel pipe forming device guide roller position adjusting device according to an embodiment of the present invention.
FIG. 8A is a view showing a shape of a guiding roller positioner for a corrugated steel pipe forming machine according to an embodiment of the present invention, and FIG. 8B is a plan view of the middle-rower roll support.
FIG. 9 is a front view of the ruckling card holder of the corrugated steel pipe forming apparatus guide roller position adjusting apparatus according to the present invention.

An example of the guide roller positioning device according to the present invention can be variously applied, and the most preferred embodiment will be described below with reference to the accompanying drawings.

FIG. 1 is a view showing an overall process according to a process sequence of a corrugated steel pipe manufacturing apparatus. Referring to FIG. 1, in the corrugated steel pipe manufacturing apparatus, a steel sheet S wound in a rolled state by an uncoiler 10 is unwound, 20, the steel plate S is provided with one-side and one-side edges of the steel sheet S in such a manner that the steel plate S can later be connected by a rack forming part forming roll forming part of the roll forming machine 20, A core portion SL1 and a second core portion SL2 are bent and formed between the first core portion SL1 and the second core portion SL2 by a corrugated portion forming roll of the roll forming machine 20 (Or corrugation) is formed.

The steel sheet S having a plurality of corrugations (or corrugations) formed along with the first and second core portions SL1 and SL2 as it passes through the roll forming machine 20 has its front end wound around the corrugated steel pipe forming machine Is coiled spirally by a guide roller which is a part of the corrugated steel pipe forming machine (30) while passing through the corrugated tube forming machine (30), and the first and second core parts (SL1 and SL2) And the upper and lower portions of the corrugated steel pipe forming machine 30 are vertically and vertically pressed and pressed by the lubrication roller provided between the guide rollers so that the boundary portion to be spirally wound is coupled in a lock- Such a steel pipe finally produced is called a corrugated steel pipe.

Here, the corrugated steel pipe includes not only a steel pipe having a cross section formed continuously in a wave shape in which a valley and a crest are curved, but also a steel pipe having a cross section in which a C-shaped rib is continuously formed on a flat surface. It is needless to say that the present invention includes all the steel pipes having the bent section or the corrugated section which can be easily recognized from the standpoint of the person skilled in the art of corrugated steel pipe in order to resist the external force.

Fig. 2 is a plan view of the corrugated steel pipe forming machine 30, Fig. 3 is a side view, and Fig. 4 is a front view showing the corrugated steel pipe formed into a cylindrical shape while the deep- And more particularly to a position adjusting device for a guide roller in a corrugated steel pipe forming machine (30).

Referring to FIG. 3, guide rollers are provided on front and rear sides of the lock deep joints 310 to which the first and second locks SL1 and SL2 are coupled, A buttress roll portion 330 is provided at the rear so that the steel plate passed through the lock deep joint portion 310 is helically coiled. The tip of the steel sheet is drawn in from the upper side of FIG. 2, and the tip of the steel sheet is drawn in from the left side with reference to FIG.

FIG. 5 is a view showing a guide roller positioning device according to an embodiment of the present invention.

The lead roll portion 320 is provided with a first height adjusting means 321 on the lead roll support portion 322 so that the height of the introduced steel sheet S is adjusted in the vertical direction The buttress roll portion 330 is provided with the buttress roll support portion 332 so that the diameter of the steel pipe coiled spirally is adjusted so that the buttress roll portion 330 is moved forward and backward (Refer to a horizontal arrow B in Fig. 5).

Accordingly, the operator can precisely adjust the height of the steel sheet S introduced into the steel pipe by spirally winding the steel sheet into the steel pipe, and at the same time, the steel pipe can be formed into the steel pipe having the desired diameter by the operator. That is, the guiding rollers of the corrugated steel pipe forming machine can be finely adjusted by the height and the horizontal distance desired by the operator, so that the work is facilitated and the quality of the steel pipe is improved in the course of spirally winding the steel pipe.

FIG. 6 is a front view of the lead roll part 320 of the corrugated steel pipe forming device guide roller positioning device according to the present invention. The lead roll support part 332 corresponding to part A in FIG. . The first height adjusting means 321 of the lead roll supporting portion 322 may be provided with a screw cam transporting method. More specifically, the first height adjusting means 321 may be provided with a lower slide 324 And an upper slide 325 which is vertically adjusted as the lower slide 324 is moved in the left and right direction by being slantingly brought into contact with the lower slide 324 may be provided ). A handle 323-1 is provided at an end portion of the screw 323 that is drawn out through the housing portion 322-1 and a leading roller 326 is coupled to an upper portion of the upper slide 325, So that it is possible to support the lower surface of the introduced steel sheet.

Due to the screw cam feeding method of the leading roll 320, the operator can further finely adjust the height of the leading roll 320, thereby precisely controlling the pulling height of the steel strip.

7 is a side view of the buttress roll part 330 of the corrugated steel pipe forming device guide roller positioning device according to the present invention as viewed from the side, and is a buttress roll support part 332). The second height adjusting means 333 may be provided on the buttress roll supporting portion 332 so as to finely adjust the diameter of the spirally coiled steel pipe (see the up and down arrows in FIG. 7) The second height adjusting means 333 of the buttress roll supporting portion 332 is provided in a thin cylinder manner so as to be able to move up and down in close contact with each other. Preferably, the second height adjusting means 333 is provided so that two thin cylinders 333a and 333b are vertically overlapped, and a guide rail 334 is provided below the second height adjusting means 333 A buttress roller 336 is axially connected to the upper portions of the two thin cylinders 333a and 333b so as to press the lower surface of the steel pipe to be coiled do.

The buttress roll portion 330 is moved by the second height adjusting means 333 of the buttress roll portion 330 in such a manner that the buttress roll portion 330 performs fine vertical movement (see the up and down arrows in FIG. 7) So that the lower surface of the steel sheet to be coiled can be closely contacted to support the movement of the buttress roll portion.

FIG. 8A is a plan view of the guide roller positioning device for a corrugated steel pipe forming apparatus according to an embodiment of the present invention, and FIG. 8B is a plan view of the middle roller support portion 360 And FIG. 9 is a front view of the same.

An upper driving roll portion 311 and a lower driving roll portion 312 are axially connected to upper and lower portions of the lock deep coupling portion 310 so as to abut the upper and lower surfaces of the steel sheet S passing through the reed roll portion 320 And the upper and lower ranks 311 and 314 are provided on one side of the upper driving roll portion 311 and the lower driving roll portion 312, respectively, (SL1) and the second lock portion SL2 are engaged and engaged.

The upper and lower upper molding rollers 311 and 313 are axially connected to the upper and lower molding rollers 311 and 313, respectively, So that the portion 370 is pivoted by the hinge portion 380 (see Fig. 4). The fixed base frame 350 is provided with a rucker receiving portion 360 for connecting the lower driving roll portion 312 and the lower rack shaft 314 to each other, A third height adjusting means 361 may be provided to closely contact the lower surface of the steel sheet S (see the up and down arrows in Fig. 8A). Preferably, the third height adjusting means 361 of the rickshoulder receiving portion 360 is provided by a hydraulic screw jack method so that the forming head 370 is moved up and down, (See the up and down arrows in Fig. 9).

Referring to FIG. 8B, a lower rack shaft 314 pressing the first rack shaft SL1 and the second rack shaft SL2 is disposed in the left and right direction, 2 horizontal adjustment means 362 may be provided. Specifically, the guide plate 363 is provided so as to be symmetrical in the left and right direction, and a moving plate 364 slid along the guide groove 363-1 provided in the guide plate 363, 364 are fixed to the screw 366 provided through the hole 365-1 provided in the screw plate 365 and can be adjusted in the left and right direction 9 in the horizontal direction). A rotation cap 367 is provided on the upper portion of the second horizontal adjustment means 362 to provide a limited rotation angle of the rotary groove 367-1 and the lower rotary shaft 314 is rotated simultaneously with the rotary cap 367 A key 367-3 is inserted into a key groove 367-2 provided at one side of the rotation groove 367-1 so as to be pivoted and a fixing bolt 367-3 engaged with the housing of the lock- -4) so that the rotary cap 367 is fixed.

Accordingly, the ruckle holder 360 can be moved up and down to move the steel plate up and down as well as to be able to set the position of the center roller accurately, and the diameter of the steel pipe can be kept constant during the spiral coiling process. And the quality is improved.

The apparatus for adjusting the guide roller position of the corrugated steel pipe forming machine according to the present invention has been described. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

It is to be understood, therefore, that the embodiments described above are in all respects illustrative and not restrictive.

10: Uncoiler 20: Roll Forming Machine
30: corrugated steel pipe forming machine 310:
311: Upper driving roll 312: Lower driving roll
313: Upper Luck card 314: Lower Luck card
320: lead roll portion 322: lead roll support portion
330: buttless roll portion 332: buttress roll support portion
350: Base frame 360: Ruckle seat base
370: forming head part 380: hinge part

Claims (10)

The first steel core portion SL1 and the second steel core portion SL2 formed on one side and the other side edge in the width direction of the steel sheet S are engaged with each other while being engaged with each other to form a cylindrical shape A corrugated steel pipe forming machine (30) for forming a steel pipe (SP)
Guide rollers are provided on the front and rear sides of the lock deep joints 310 to which the first and second locks SL1 and SL2 are coupled and the guide rollers are moved forward And a buttress roll part 330 is provided at the rear side so that the steel plate passed through the lock deep joint part 310 is helically coiled,
The lead roll portion 320 is provided with a first height adjusting means 321 on the lead roll support portion 322 so that the height of the incoming steel sheet S can be adjusted in the vertical direction and the buttress roll portion 330 is formed in a spiral shape The first horizontal adjusting means 331 is provided on the buttress roll support portion 332 so that the buttress roll portion 330 is moved in the front and rear direction so that the diameter of the steel pipe to be coiled is adjusted. Regulating device.
The method according to claim 1,
Wherein the first height adjusting means (321) of the lead roll support portion (322) is provided by a screw-cam transferring method.
3. The method of claim 2,
The first height adjusting means 321 is provided with a lower slide 324 which moves in a lateral direction while the screw 323 rotates and the lower slide 324 is inclined against the lower slide 324, And the upper slide (325) is adjusted in the vertical direction according to the movement of the guide rollers.
The method according to claim 1,
Wherein the buttress roll support portion (332) is provided with a second height adjusting means (333) for finely adjusting the diameter of the spirally coiled steel pipe.
5. The method of claim 4,
Wherein the second height adjusting means (333) of the buttress roll support portion (332) is provided in a thin cylindrical manner and is closely contacted in the vertical direction.
6. The method of claim 5,
Wherein the second height adjusting means (333) is provided such that two thin cylinders (333a, 333b) are vertically stacked.
The method according to claim 1,
An upper driving roll portion 311 and a lower driving driving roll portion 312 are axially connected to upper and lower portions of the lock deep coupling portion 310 so as to abut the upper and lower surfaces of the steel plate S passing through the reed roll portion 320, The upper and lower ranks 311 and 314 are provided on one side of the upper driving roll 311 and the lower driving roll 312, The second lock core SL2 is engaged and engaged,
The fixed base frame 350 is provided with a rucker receiving portion 360 for connecting the lower driving roll portion 312 and the lower rack shaft 314 to each other and the rucker receiving portion 360 is provided with a steel plate S is provided on the lower surface of the guide groove of the corrugated tube.
8. The method of claim 7,
Wherein the third height adjusting means (361) of the righthander receiving unit (360) is provided by a hydraulic screw jack method.
8. The method of claim 7,
A second horizontal adjusting means 362 is provided to the left and right rigid support portions 360 so that the lower right rigid portion 314 pressing the first and second rigid portions SL1 and SL2 is adjusted in the left and right direction And the guide roller position adjusting device.
10. The method of claim 9,
The second horizontal adjusting means 362 is provided with a guide plate 363 symmetrical in the left and right direction and a moving plate 364 sliding along the guide groove 363-1 provided in the guide plate 363 , And the moving plate (364) is fixed to a screw (366) provided to pass through a hole (365-1) provided in a screw plate (365) and is adjusted in the left and right direction. Device.
KR1020170006375A 2017-01-13 2017-01-13 Locating device of guiding roller at steel pipe coiling machine KR101722697B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980702841A (en) * 1995-03-08 1998-08-05 쿠르트 브루너 Method and apparatus for manufacturing spirally wound fixed seam
KR100956425B1 (en) * 2010-01-08 2010-05-06 김한곤 Mathod for manuaacturing corrugated steel pipe and apparatus thereof
KR101267031B1 (en) * 2012-10-22 2013-05-24 주식회사 픽슨 Flange with integrated corrugated steel pipes and its molding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980702841A (en) * 1995-03-08 1998-08-05 쿠르트 브루너 Method and apparatus for manufacturing spirally wound fixed seam
KR100286523B1 (en) 1995-03-08 2001-05-02 쿠르트 브루너 Method and apparatus for producing helically wound lock-seam tubing
KR100956425B1 (en) * 2010-01-08 2010-05-06 김한곤 Mathod for manuaacturing corrugated steel pipe and apparatus thereof
KR101267031B1 (en) * 2012-10-22 2013-05-24 주식회사 픽슨 Flange with integrated corrugated steel pipes and its molding apparatus

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