KR200343554Y1 - a profile auto cutting apparatus - Google Patents

Abstract

The present invention relates to an automatic cutting device for the section steel, the kicker 120 for laying down the lower end portion of the section steel 10 is inclined inclined laterally with the longitudinal length direction on the front conveying conveyor 110, and the A side pusher 130 is provided to push the section steel 10 placed on the front conveying conveyor 110 to one side by a piston and cylinder operation so that the section steel 10 provided from the upper side is perpendicular to the side guide 140 surface. Loading transfer unit 100 for transferring forward to stand up to; The side pusher 130 is continuously installed, the sensing member 210 for detecting the front and rear ends of the shaped steel 10 transferred from the loading transfer unit 100 is provided with the steel 10 waiting for the next process Recognizing the length of the conveying length to convey the forward portion 200 and; While pressing and fixing the shaped steel 10 recognized and conveyed by the length recognition conveying part 200 from above by the clamp 320, thermal transfer marking is performed to distinguish the cut portion of the shaped steel 10 and plasma is formed in a specified shape. Marking and cutting unit 300 for cutting; The marking and cutting unit 300 assists the forward movement of the shaped steel 10, and is divided into front and rear portions inclined downward, so that the marking and cutting unit 310 of the marking and cutting unit 300 is An open transfer part 400 forming an open space which can be moved inside the front transfer conveyor 110; The chain conveyor 510 is provided with a protruding jaw 511 in which the lower end of the shaped steel 10 transferred from the open conveying part 400 is fitted, and the lower portion of the shaped steel 10 is pressed by both left and right sides. With the technical gist, the a-shaped or T-shaped steel is configured to include; a pressing support supporting portion 500 for forward transfer in the state in which the upper middle portion of the section steel 10, which is provided with a supporting roller 520 is opened As the thermal transfer marking and plasma cutting process are performed in the process of stably forwarding to the designated position on one conveying line made in consideration of the shape characteristics of the steel, the entire cutting and conveying process of the shaped steel can be made continuously. Cutting process and transfer process of processing and collecting member are automatically done, eliminating unnecessary time and manpower consumed for transfer between each process and improving working environment. To improve the acid-type steel relates to the automatic cutting device.

Description

Automatic cutting device for section steel {a profile auto cutting apparatus}

The present invention relates to an automatic cutting device for a section steel, and more specifically, to the forward or the longitudinal direction of the U-shaped or T-shaped steel material in consideration of the shape characteristics of the shape of the steel sheet to a stable position in the forward transfer At the same time, the present invention relates to an automatic cutting device of a structural steel material which can improve the efficiency of cutting and forming a steel member by automatically performing a process of thermally marking and cutting into a designated shape for separation in the process of conveying. .

In general, a large number of operations for cutting and welding various reinforcement materials exist in the construction of large structures such as ship structures, and the reinforcement materials used for supporting such ships have various cross-sectional shapes such as T, I, a, depending on installation conditions. It is mainly made of bar-shaped steel and arranged and welded on the ship's main plate.

In order to arrange and fix such a shape steel in a desired shape on a ship structure, a plurality of shape steel members having various specifications are manufactured by a cutting and welding process of a flat plate, and then cut again at a specified shape and an improvement angle, and an installation position and Depending on the purpose of use, the process of transporting and storing them goes through.

Recently, in order to increase the productivity of the cutting of the standardized shaped steel, it is often made of an automated system using a cutting robot, and as such a prior art, the automatic cutting steel of the utility model application number 1997-019764 will be briefly described.

The section steel multiple cutting system is provided at the inlet of the section steel cutting device to insert at least two sections of the section steel cutting device section for cutting the section steel according to the input data, the section steel cutting device section having a torch for cutting; 1 form steel including at least two sections for transferring the section steel to at least two conveyors for guiding the section steel to the section cutting device section and the section cutting section, wherein the section section cutting section is loaded by one section section of the section section. When cutting the other, the other section steel transfer device portion has a structure for performing the transfer operation of the other section steel to insert the other section steel to the section steel cutting device.

The automatic cutting steel system has been proposed only in the cutting device for cutting the individual steel sheet in the prior art, by combining with the transfer device is configured to continuously transfer and cut a plurality of steel beam cutting and It was intended to improve the cutting speed of the section steel so that the transfer can be made without waiting time.

However, in practice, as the shaped steels have a variety of standardized cross-sectional shapes, it is impossible to apply most of the shaped steels to a device having a cutting and conveying system having a single limited structure. In order to facilitate the transfer, the design of the automatic cutting device of the steel sheet having a more specific cutting and conveying system according to the individual shape of the steel sheet is required separately.

Therefore, the present invention is a cutting and transfer process as the thermal transfer marking and plasma cutting process in the process of stable forward transfer to the designated position on the one transfer line made in consideration of the shape characteristics of the steel or T-shaped steel sheet It is an object of the present invention to provide an automatic cutting device of a steel sheet structure that can be made continuously.

In addition, it is another object of the present invention to provide an automatic cutting device of the structure of the structural steel to improve the productivity by reducing the unnecessary time and manpower consumption due to the automatic cutting and conveying process of the steel sheet, and improve the working environment.

1-a plan view and a side view of an automatic cutting device according to the present invention.

Figure 2-Top view of the loading conveyer.

3-Front view of the kicker.

4-a plan view of the length recognition transfer unit.

Fig. 5-A plan view of the marking and cutting portion and the open conveying portion.

Figure 6-Side view of the open feeder.

7-A front sectional view of the pressure support transfer portion.

8-side and front views of the transfer car;

<Description of Major Symbols Used in Drawings>

10: shaped steel 100: loading transfer part

110: forwarding conveyor 120: kicker

121: mounting plate 121a: locking jaw

122: rotation axis 130: side pusher

131: pushing pusher 131a: pushing pusher guide roller

131b: piston and cylinder 132: dependent pusher

132a: Subordinate pusher guide roller 140: Side guide

200: length recognition transfer unit 210: detection sensor

220: rail 300: marking and cutting portion

310: marking and cutting machine 320: clamp

400: open transfer unit 500: pressurized support transfer unit

510: chain conveyor 511: protruding jaw

520: support roller 600: feed cart

700: rear open transfer part

The present invention for achieving the above object is a kicker 120 for laying down the lower end of the section steel 10 is inclined inclined sideways having a longitudinal length direction on the upper surface of the front conveying conveyor 110, and the front A side pusher 130 is provided to push the section steel 10 placed on the conveying conveyor 110 to one side by a piston and cylinder operation so that the section steel 10 provided from the upper side is perpendicular to the side guide 140 surface. A loading transfer unit 100 for transferring forward and upright; The side pusher 130 is continuously installed, the sensing member 210 for detecting the front and rear ends of the shaped steel 10 transferred from the loading transfer unit 100 is provided with the steel 10 waiting for the next process Recognizing the length of the conveying length to convey the forward portion 200 and; While pressing and fixing the shaped steel 10 recognized and conveyed by the length recognition conveying part 200 from above by the clamp 320, thermal transfer marking is performed to distinguish the cut portion of the shaped steel 10 and plasma is formed in a specified shape. Marking and cutting unit 300 for cutting; The marking and cutting unit 300 assists the forward movement of the shaped steel 10, and is divided into front and rear portions inclined downward, so that the marking and cutting unit 310 of the marking and cutting unit 300 is An open transfer part 400 forming an open space which can be moved inside the front transfer conveyor 110; The chain conveyor 510 is provided with a protruding jaw 511 in which the lower end of the shaped steel 10 transferred from the open conveying part 400 is fitted, and the lower portion of the shaped steel 10 is pressed by both left and right sides. The automatic cutting device is configured to include a support roller 520 is provided with a pressing support conveying portion 500 for forward transfer in the state in which the upper middle portion of the shaped steel 10 is built up to the technical gist.

Here, the kicker 120 of the loading transfer part has an initial state in which the base plate 121, on which the shaped steel 10 is seated, has a locking jaw portion 121a at a lower end thereof and is inclined obliquely, and the base plate 121 is disposed. ) Is rotated around the rotating shaft 122 formed in the lower portion as the locking step (121a) is moved to the lower side of the front conveying conveyor 110, the steel member 10 is naturally on the upper surface of the front conveying conveyor (110). The pusher 131 is configured to be released, and the side pusher 130 of the loading transfer part pushes the guide roller 131a toward the shape steel by the piston and cylinder 131b, and the pusher 131. It is preferably configured to include; a slave pusher 132 is continuously installed in the rack gear of the guide roller 132a is moved in the same displacement as the propulsion pusher 131 as connected to one shaft.

In addition, the detection sensor 210 of the length recognition transfer unit, the reciprocating steel 10 to detect the presence of the side while moving back and forth along the rail 220 installed on the left and right sides of the front transfer roller 110 It is preferable to recognize the front and rear ends of.

In addition, the clamping part 320 of the marking and cutting part is preferably formed in a pair of front and rear sides so as to fix the shape steel 10 at both front and rear sides of the cutting line 10.

In addition, the open conveying unit 400, the front and rear and the continuous conveying path on the front conveying conveyor 110, which is continuously formed in the front and rear as the central end of the front and rear portion is moved up and down on the circular path with the front and rear ends as the rotation axis It is preferable to selectively form the space portion open to the left and right.

And, the lower side of the open conveying part 400, the collection member is generated and freely dropped in the cutting process of the section steel 10 is accommodated and transported, dropping the contents as it is inclined toward one side formed a steep slope It is preferable that the transfer car 600 is provided.

In addition, the pressurized support transfer part 500 is divided into front and rear parts of which the center is inclined downward in the middle of the chain conveyor 510 to selectively form an open space in which an operator can move inside the chain conveyor 510. It is preferable that the rear open transfer part 700 of the structure is provided.

Therefore, the cutting and conveying process of the shape steel as a result of thermal transfer marking and plasma cutting process in the process of stably forward transfer to the designated position on one transfer line manufactured in consideration of the shape characteristics of the shape steel Has the advantage that can be done continuously.

In addition, there is another advantage that the entire cutting process of the steel and the transfer process of the processing member and the collection member is automatically made to eliminate the unnecessary time and manpower wasted in the transfer between each process and improve the working environment to improve productivity.

The present invention having the configuration as described above will be described in detail with reference to the following drawings. 1 is a plan view (a) and a side view (b) of the automatic cutting device of the steel sheet according to the present invention, Figure 2 is a plan view of the loading transfer portion, Figure 3 is a front view of the kicker, Figure 4 is a plan view of the length recognition transfer portion 5 is a plan view of the marking and cutting unit and the open transfer unit, FIG. 6 is a side view of the open transfer unit, FIG. 7 is a front sectional view of the pressurized support transfer unit, and FIG. 8 is a side view (a) and a front view of the transfer car. (B).

Automatic cutting device according to the present invention is a loading transfer unit 100, length recognition transfer unit 200, marking and cutting unit 300, open transfer unit 400, pressure support transfer unit 500, rear open transfer unit It is configured to include a 700, the letter A or T-shaped steel (10) is forward on one transport line formed by the loading transfer unit 100, length recognition transfer unit 200, the pressure support transfer unit 500 While being transported, the open conveying unit 400 and the rear open conveying unit 700 are configured to be processed through the marking, cutting, and trimming processes sequentially in an open space selectively formed.

First, the loading transfer unit 100 will be described.

The loading conveying part 100 is composed of a front conveying conveyor 110, a kicker 120, a side pusher 130, a side guide 140, the upper side of the shaped steel 10 having a letter or T-shaped cross-sectional shape Received from the kitter 120 to be seated at an angle to the front conveying conveyor 110, the lower surface of the front conveying conveyor 110, which forms a transport path to the front, by the operation of the side pusher (130) Pushed up on the side guide 140 installed on one side of the front conveying conveyor 110 so that the lower end portion of the section 10 is vertically vertically transferred forward.

The front conveying conveyor 110 refers to the entire conveying conveyor that continuously forms a conveying path forward in the present invention, except that the pressurized support conveying unit 500 described below is composed of a chain conveyor 510. The front conveying conveyor 110 in the loading conveying unit 100, the length recognition conveying unit 200, the open conveying unit 400, the rear open conveying unit 700 is composed of a roller conveyor.

The kicker 120 and the side pusher 130 are arranged on the front conveying conveyor 110 along the front conveying conveyer 110 along the longitudinal direction of the plurality of the conveying conveying unit 100 in the plurality of the transfer conveying unit ( 100) It is also possible to transfer the shape steel 10 having any length within the length of the front in a stable manner.

In the present invention, as shown in FIG. 2, five side pushers 130 per one kicker 120 are continuously disposed adjacent to the front conveyer 110 in a state connected to one shaft, and the kicker 120. When the beam member 10 is laid down on the front conveying conveyor 110, a plurality of side pushers 130 located in front and rear of the kicker 120 pushes the beam member 10.

For example, when the shape steel material 10 having a length corresponding to an interval formed by two of the kickers 120 is placed on the kicker 120, the kicker 120 is placed on the front conveyer 110. When the section steel 10 is put down, the side guide 140 is stably in close contact with the side guide 140 by four to five side pushers 130 positioned between the two kickers 120.

The kicker 120 is installed below the setter plate 121 so that the shape steel plate 10 can be tilted by rotating the setter plate 121 and the setter plate 121 by the crane. The rotating shaft 122 is provided, and the mounting plate 121 has an initial state inclined at an angle, and has a locking jaw portion 121a at a lower end thereof so that the shape steel 10 is placed on an upper surface of the mounting plate 121. Naturally moving downwards along the inclined surface formed by the mounting plate 121, the lower plate is caught by the locking jaw portion (121a), the steel plate 10 is formed on the plurality of kickers (120) As a result, it is placed straight back and forth.

When the mounting plate 121 is rotated about the rotation shaft 122 formed at the lower portion, the engaging jaw portion 121a formed at the bottom of the mounting plate 121 is formed between the plurality of feed rollers constituting the front conveying conveyor 110. While moving downward through the shape steel plate 10 which is placed on the mounting plate 121 is naturally placed on the upper surface of the front conveying conveyor (110).

The side pusher 130 forms a continuous reference surface along one side of the front conveying conveyor 110 from the side of the steel member 10 obliquely placed on the front conveying conveyor 110 by the kicker 120 and In the vertical guide device to push the side guides 140, as well as the loading conveying unit 100, as well as the length recognition 200 to be described below will be continuously installed in accordance with the front conveying conveyor 110 before the marking and cutting process It is to assist the transfer of the shaped steel 10 made in the phase.

At the side end of the side pusher 130 which is in contact with the side of the shaped steel 10, guide rollers 131a and 132a having a rotational direction toward the front are installed to prevent friction generated in the transfer of the shaped steel 10 to the front. Minimize.

The side pusher 130 has a pusher 131 having a piston and cylinder 131b device for directly pushing the pusher guide roller 131a to one side, and the pusher 131 and the rack on one axis. It is composed of a subordinate pusher 132 having a subordinate pusher guide roller 132a that can be moved in the same displacement as the propulsion pusher guide roller 131a as it is connected and installed.

The side pusher 130 forms a set as the individual propulsion pusher 131 and the subordinate pusher 132 is connected uniaxially to the rack gear installed in each, five side pusher 130 is a set According to the embodiment shown in FIGS. 2 and 4, two pistons and cylinders of the propulsion pusher are formed of two propulsion pushers 131 and three subordinate pushers 132 installed between the left and right sides thereof. By the operation (131b), all of the five side pusher 130 forming a wide length along the longitudinal direction of the front conveyer 110 is operated together.

A length recognition transfer unit 200 is continuously formed in front of the load transfer unit 100, and the length recognition transfer unit 200 is formed in parallel on the left and right sides of the front transfer conveyor 110 continuously installed in the load transfer unit 100. It is provided with a sensing sensor 210 for detecting the front and rear ends of the shaped steel 10 as it is moved back and forth on the rail 220 to determine the length and shape of the shaped steel 10 waiting for the next marking and cutting process. Be aware.

The rail 220 has a front and rear length corresponding to the length of the load transfer unit 100, that is, the length that can be transported in the present invention as it is formed from the front end of the length recognition transfer unit 200 to the rear In addition, the front and rear ends of the shaped steel 10 having any length waiting for the next process can be detected by the sensor 210 for detecting the presence or absence of the side.

In the marking and cutting unit 300 (described below) installed in front of the length recognition transfer unit 200 (described below), the shape steel 10 is cut into various shapes and angles of improvement, divided into a plurality of sections, and the cut portions are transferred to the front first. While the front portion of the length recognition transfer unit 200 is left the remainder of the section steel 10 waiting to be cut in the specified shape.

The sensing sensor 210 of the length recognition transfer part recognizes the remaining length and shape of the shape steel 10 on the front transfer roller 110 to perform the next cutting in the marking and cutting part 300. Ensure the deployment is accurate.

Since the length recognition transfer part 200 is a main function of detecting the shape of the shape steel 10, the same as to intend to vertically set the shape steel 10 on the side guide 140 surface of the loading transfer portion The side pusher 130 having the side guide 140 as a stable reference plane for shape detection of the shape steel 10 and pushing the shape steel 10 on the front feed roller 110 to the side guide 140. Is installed continuously.

The shaped steel 10 recognized and transferred by the length recognition transfer unit 200 is subjected to a thermal transfer marking process and a plasma cutting process in the marking and cutting unit 300, and the front and rear sides of the marking and cutting unit 300. A clamp 320 for fixing the steel member 10 at both front and rear sides of the cutting line 10 of the cutting member 10 at each of the front end portion of the length recognizing transfer portion 200 and the rear end portion of the pressure supporting transfer portion 500 corresponding to the cutting line 320. ) Is provided by the clamp 410 by pressing the clamping steel (10) on the upper side to fix the heat transfer marking first to distinguish the cut portion, and then plasma cutting to a specified shape to transfer to the next process.

In the cutting and marking process, since a marking and cutting machine 310 having a structure of a conventional plasma cutting apparatus and a thermal transfer marking apparatus is known, a detailed description thereof will be omitted.

The front transfer conveyor 110 for forward-transferring the shaped steel 10 in the marking and cutting part 300 has a thermal transfer machine and a cutting torch of the marking and cutting machine 310 adjacent to the shaped steel 10. In order to precisely perform the marking and cutting process, the front conveying conveyor 110 has a structure capable of selectively forming an open space through which the marking and cutting machine 310 can be moved. 400).

The opening transfer part 400 is divided into a front and rear part having a center formed separately and a rotating shaft installed at the front and rear ends while assisting the front transfer of the shaped steel 10 in the marking and cutting part 300. When a request to move the cutter 310 to the inside of the front conveying conveyor 110 occurs, the front and rear portions of the open conveying part 400 are inclined downwardly about the rotational axis to descend one continuous conveying path. The open space portion is created on the forward conveying conveyor 110.

The open conveying part 400 is a continuous conveying path and the marking on the front conveying conveyor 110 continuously formed forward and backward as the central end of the front and rear portions are individually moved up and down on a circular path centered on a rotating shaft installed at the front and rear ends. And a space part which is open to the upper and lower sides and the left and right sides so that the cutter 310 can approach from the upper side.

When the marking and cutting process is performed in a state in which the open transfer part 400 forms an open space, the cutting surface of the shaped steel 10 is cut in a state where it is floated in the air, and thus the shaped steel 10 The collection members inevitably generated in the cutting process are not transported to the next process and fall freely downward through the open space.

Below the marking and cutting unit 300 and the open transfer unit 400 is provided with a transport car 600 for receiving and transporting the collection members generated and freely dropped in the cutting process of the section steel 10 Whenever the collecting member falls, it is detected and transported and dropped to a designated position, so that the next cutting process of the shaped steel 10 is influenced by the collecting member so that no disruption is generated.

The receiving tank formed at the upper end of the transfer car 600 has a hopper shape having an inclined surface formed on an inclined surface so as to correspond to the shape of the open conveying unit 400 while forming a wide open surface toward the upper side. The sides are formed to form steep slopes to minimize movement radius caused by tilting when inclined to one side and to drop the contents located at the upper side when tilted due to the tendency of the collection member to be placed on the other side. This allows the dropping to be done easily without friction.

The shape steel 10 transferred forward through the marking and cutting portion 300 and the open transfer portion 400 having the structure as described above is transferred to the designated position as it is because the basic cutting processing to the specified shape is completed. On the front and rear ends, the trimming and the like are additionally made by hand and then transferred to the designated position.

The pressurized support transfer part 500 is continuously installed at the front of the open transfer part 400, and the forward movement of the pressurized support transfer part 500 is provided with a protruding jaw 511 in which the lower end of the shaped steel 10 is fitted. On the chain conveyor 510.

The chain conveyor 510 is provided with a pair of support rollers 520 for pressing and supporting the left and right side surfaces of the shaped steel 10 from both sides at positions spaced apart from each other by a predetermined interval, and the shaped steel 10 is connected to the chain conveyor. While the lower end is sandwiched between the protruding jaw 511 of the support roller 520 is received in both directions by the forward transfer in a standing state.

As the support roller 520 supports the lower portion of the shaped steel 10 to press and support the shaped steel material 10, the operator checks the cutting process of the shaped steel material 10 visually from all directions. In order to make it easy, it is conveyed forward with the upper middle part opened to the outside.

In the middle of the pressurized support transfer part 500 is formed a rear open transfer part 700 having the same operation structure as the open transfer part 400 formed on the chain conveyor 510 divided into front and rear parts inclined downward. The rear open transfer part 700 is a component for assisting a worker's manual operation, and when the necessity of trimming processing of the shaped steel material 10 being transferred on the pressure support transfer part 500 is confirmed, the operator moves the chain conveyor ( 510 is moved to the inner side to selectively form an open space portion to be easily manual work in the state close to the shape steel 10 floated in the air.

The present invention by the configuration as described above is formed according to the thermal transfer marking and plasma cutting process in the process of stably forward transfer to the designated position on the one transfer line made in consideration of the shape characteristics of the GF-shaped or T-shaped steel There is an effect that the entire cutting and transferring process of the steel can be made continuously.

In addition, the entire cutting process of the steel and the transfer process of the processing member and the collection member is automatically made to eliminate the unnecessary time and manpower consumption required for the transfer between each process and improve the working environment to improve the productivity.

Claims (8)

A kicker 120 for lowering the lower end portion of the shaped steel 10 slanted at an angle with the front and rear length direction on an upper surface of the front conveying conveyor 110 and the steel sheet placed on the front conveying conveyor 110 ( 10 is provided with a side pusher 130 for pushing up to one side by the piston and cylinder operation, and the transfer member 100 for vertically transferring the section steel 10 provided from the upper side to the front side of the side guide 140 and forward. ; The side pusher 130 is continuously installed, the sensing member 210 for detecting the front and rear ends of the shaped steel 10 transferred from the loading transfer unit 100 is provided with the steel 10 waiting for the next process Recognizing the length of the conveying length to convey the forward portion 200 and; While pressing and fixing the shaped steel 10 recognized and conveyed by the length recognition conveying part 200 from above by the clamp 320, thermal transfer marking is performed to distinguish the cut portion of the shaped steel 10 and plasma is formed in a specified shape. Marking and cutting unit 300 for cutting; The marking and cutting unit 300 assists the forward movement of the shaped steel 10, and is divided into front and rear portions inclined downward, so that the marking and cutting unit 310 of the marking and cutting unit 300 is An open transfer part 400 forming an open space which can be moved inside the front transfer conveyor 110; The chain conveyor 510 is provided with a protruding jaw 511 in which the lower end of the shaped steel 10 transferred from the open conveying part 400 is fitted, and the lower portion of the shaped steel 10 is pressed by both left and right sides. And a pressurized support transfer part (500) for forward transfer in a state in which the upper and upper portions of the shaped steel (10), which are provided with support rollers (520), are erected. The kicker 120 of claim 1, wherein The base plate 121, on which the shaped steel 10 is seated, has an initial state inclined obliquely with a locking jaw portion 121a at a lower end thereof, and the base plate 121 has a center of rotation 122 formed at a lower portion thereof. As the locking jaw portion (121a) is moved to the lower side of the front conveying conveyor (110) as it is rotated, the section steel (10) is automatically laid on the upper surface of the front conveying conveyor (110) characterized in that the automatic cutting device. The side pusher 130 of claim 1, wherein Propulsion pusher 131 for pushing the guide roller 131a toward the shape steel 10 by the operation of the piston and cylinder 131b and the rack gear of the propulsion pusher 131 are continuously connected to one shaft. And a slave pusher (132) in which the guide roller (132a) is moved in the same displacement as the propulsion pusher (131). According to claim 1, wherein the detection sensor 210 of the length recognition transfer unit, Automatic cutting device for the shape of the section steel, characterized in that the front and rear ends of the section (10) by detecting the presence of the side while moving back and forth along the rail 220 installed on the left and right sides of the front feed roller 110 . The method of claim 1, wherein the clamp 320 of the marking and cutting portion, Forming material automatic cutting device characterized in that formed in a pair of front and rear sides to fix the shape steel (10) in the front and rear sides of the section steel (10) cutting line. The method of claim 1, wherein the open transfer unit 400, As the central end of the front and rear portions are individually moved up and down on the circular path with the front and rear ends as the rotation axis, the continuous transfer path and the space portion opened vertically and vertically on the front transfer conveyor 110 continuously formed forward and backward are selectively formed. Shaped steel automatic cutting device characterized in that. The method of claim 1, wherein the lower side of the open transfer unit 400, The transport member 600 is provided with a transport car 600 for dropping the contents according to the inclined to one side formed and the steep inclined surface is received and transported to the collection member generated and freely dropped in the cutting process of the shape steel (10) Steel automatic cutting device. According to claim 1, wherein the pressure support transfer unit 500, The rear open transfer part 700 of the structure is formed in the middle of the chain conveyor 510 divided into front and rear parts inclined downward to selectively form an open space in which the worker can move to the inside of the chain conveyor 510. Shaped steel automatic cutting device characterized in that.