JPH05237653A - Automatic cutting device for column of square and round steel pipe or the like - Google Patents

Abstract

PURPOSE:To carry out the cutting and beveling of column in parallel by providing a V-shaped column transferring driving mechanism on a part of a roller conveyor, etc., having a V-shaped column mounting part and providing a rotary drum fitted with a cutting torch in the forwarding direction of the column. CONSTITUTION:The V-shaped column transferring driving mechanism is provided on a part of the roller conveyor 5, etc., having the V-shaped column mounting part. The rotary drum 12 which turns along the circumference of the column is provided at the front position in the forwarding direction of the column transferred by the roller conveyor. A cutting torch part making a copy motion along the circumference of the column is provided on the rotary drum, a cutting torch freely moving in an inclined angle is fitted at the cutting torch part in the longitudinal direction of the column to carry out the cutting and beveling of the column in parallel. Thus the highly accurate cutting is carried out and the process is automatized by using a master controlling board 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cutting device for a column such as a corner or a round steel pipe, and more specifically, a corner capable of concurrently performing cutting and beveling of various columns, The present invention relates to an automatic cutting device for a column such as a round steel pipe.

[0002]

2. Description of the Related Art Conventionally, the cutting and opening of columns such as corners and round steel pipes are usually performed by the following methods.
That is, a method in which a column saw is cut using a band saw, and then the cut surface is machined and the groove is machined by a dedicated machine. Manual cutting method using a portable gas cutter. Etc. are used.

In the case of this method, the cutting process and the opening process of the small diameter column can be performed with a certain degree of accuracy.

[0004]

However, the above-mentioned configuration has the following problems. That is, when the diameter of the column to be cut and processed is large, in the case of a band saw, the distance between the fixed guides of the band saw becomes long, the relief of the saw teeth becomes large, and when using a portable gas cutter, Since it is difficult to maintain a constant state, it becomes difficult to obtain the perpendicularity of the cut surface. Since the groove processing is performed after the cut surface processing, many steps are required for the processing, the capital investment cost of the processing line increases, and the processing time increases. There are problems such as.

The present invention has been made in response to the above-mentioned problems, and its object is to improve the cutting accuracy of columns such as corners and round steel pipes, and in a short time, An object of the present invention is to provide an automatic cutting device for a column such as a corner or a round steel pipe, which is capable of performing cutting processing and groove processing in parallel.

[0006]

A device for automatically cutting a column such as a corner or a round steel pipe according to the present invention as a means for achieving the above object is a roller conveyor having a V-shaped column mounting portion. A V-shaped column feed drive mechanism is provided in a part of the conveyor such as a roller conveyor, and a rotary drum that rotates along the outer periphery of the column is provided at the front part of the roller conveyor in the column advancing direction. A cutting torch portion that moves along the circumference of the column is provided, and a cutting torch that can freely tilt along the length direction of the column is provided on the cutting torch portion, and cutting and groove processing of the column are performed. It has a configuration that enables parallel processing.

In another aspect of the present invention, there is provided another apparatus for automatically cutting a column such as a corner or a round steel pipe so that the rotary drum is vertically movable and the center of the rotary drum can be set at the center of the column. In addition, the gas supply hose for the cutting torch can be freely wound around the outer circumference of the rotary drum and is connected to the hose drive device.

[0008]

[Function] Columns of the present invention such as corners and round steel pipes (including rods)
The automatic cutting and processing apparatus of No. 1 first mounts the column on a conveyor such as a roller conveyor arranged in a V shape, and then
By driving the letter-shaped column feed drive mechanism, the column is advanced in the direction of the rotary drum in a stable holding state, and the cutting setting position of the column is stopped at a predetermined position for cutting by the cutting torch. Then, after adjusting the inclination angle of the cutting torch according to the set groove of the column, by rotating the cutting torch along the outer periphery of the column, the cutting processing and the groove processing of the column are performed in parallel. Can be processed.

Therefore, according to the present invention, since the column conveyor and the column feed drive mechanism are formed in a V shape, the column can be held in a stable state, and the inclination angle of the cutting torch is set by the groove. Therefore, the cutting process and the groove process of the column can be processed in parallel, and the cutting torch is rotated along the outer periphery of the column. Since it works so that the accuracy can be made good and the processing accuracy becomes good, it works so that the automatic welding etc. by the welding robot in the next process can be performed continuously, thus saving the labor. ..

[0010]

Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 to FIG.
1 shows an embodiment of the present invention, FIG. 1 is a schematic perspective view, FIG. 2 is a plan view, FIG. 3 is a side view from the rotary drum side, FIG. 4 is a central front vertical partial sectional view of FIG. 2, and FIG. FIG. 6 is a vertical sectional view, FIG. 6 is an enlarged front view of the cutting torch portion, and FIG. 7 is a plan view of FIG.
FIG. 8 is a side view of the copying drive unit, and FIG. 9 is an explanatory diagram for explaining a copying drive state.

The apparatus for automatically cutting corners, round steel pipes, and other columns according to this embodiment is roughly divided into four parts: a column conveyor section 1, a column clamp section 2, a rotary drum section 3, and a column cutting section 4. It is composed of

The column conveyor section 1 comprises a roller conveyor 5 and a column feed drive mechanism 6. The roller conveyor 5 includes a plurality of free rollers.
It is formed as a V-shaped conveyor, and a column feed drive mechanism 6 is provided in a part thereof. Column feed drive mechanism 6
Has a V-shaped feed roller 7 formed by two conical rollers on the upper part thereof, and the V-shaped feed roller 7 is a roller driving device (usually using an electric geared motor)
8 and is vertically movable by a lower hydraulic cylinder 16. Here, the V-shaped feed roller 7 of the column feed drive mechanism 6 is a hydraulic cylinder 16
To move column a upward only when moving it,
The configuration is such that the column a is placed. And
A column clamp section 2 is provided at the front of the column conveyor section 1.
And a rotary drum section 3 is provided.

The column clamp portion 2 is arranged in the upper front portion of the V-shaped feed roller 7, and has a column pressing member 9
And a hydraulic cylinder 10 for moving the column pressing member 9 up and down. Here, the column pressing member 9 is formed as an inverted V-shaped member so that the column a can be vertically sandwiched (held) by the V-shaped feed roller 7 (and the roller conveyor 5). Further, the hydraulic cylinder 10 has a main body frame 11
Installed on.

The rotary drum section 3 comprises a rotary drum 12, a rotary drum rotation control section 13, and a hose drive section 14. The rotary drum 12 is a drum that rotates along the outer periphery of the column a supplied from the column conveyor unit 1, and is guided by the guide frame 15 to the main body frame 11 via the four linear ways 17, 17 ,. The hydraulic cylinder 18 suspends the guide frame 15 and is vertically movable.

Further, the rotary drum rotation controller 13
Is a drive control unit for rotating the rotary drum 12, has an electronic continuously variable transmission motor 19 and a DC motor control device (not shown), and controls the driving force of the electronic continuously variable transmission motor 19. The timing belt 21 transmits the rotary drum 12 via a driven pulley 22. Here, the driven pulley 22 of the rotary drum 12 is a flat pulley, which is transmitted by the surface pressure of the timing belt 21 and is rotationally held by the roller 23. The rotary drum 12 is controlled by the DC motor controller.
The rotation speed of is set to a variable state so that the cutting speed in the column cutting unit 4 can be selected.

Further, the hose drive section 14 is a hose connection device section provided with a gravity type roller guide capable of continuously feeding out and rewinding various hoses 24 such as a gas supply hose and an electric wire. The hose drive section 14 is connected to the hose drive section 14. The hoses 24 are collectively fixed by a fixture 25 provided on the outer peripheral surface (outer ring) of the rotary drum 12, and can be rewound or delivered to the hose drive unit 14 according to the rotation of the rotary drum 12. . The column cutting section 4 is provided on the inner surface (inner ring) of the rotary drum 12.

The column cutting section 4 includes a cutting torch section 26,
The cutting torch mounting portion 27 and the air cylinder 28 are included. The cutting torch unit 26 is the cutting torch 2
The torch adjuster 30 to which 9 and 29 are attached and the self-sustaining copying device section 31 are provided.
Has adjusting hardware 32, 32 for adjusting the inclination angle of the cutting torches 29, 29, and the left and right cutting torches 29, 2
9 are provided with adjusting screws 33, 33 for adjusting the torch interval, and the adjusting screws 33, 33 are provided with a handle 3 for adjusting the interval.
4, 34 are provided.

The self-sustaining copying device section 31 has two front and rear main rollers 35 and 35, which are vertically movable by a spring 40, and left and right auxiliary rollers 36 and 37, and a cutting torch mounting section 27. With the pressing force of the air cylinder 28 and the column a, the spring 40
By the action of, it is configured to be able to move following the outer peripheral shape of the column a. The cutting torch mounting portion 27 is swingably and cantilevered on the inner surface (inner ring) of the rotary drum 12, and the cutting torch portion 26 is mounted at the free end.
Further, the air cylinder 2 is provided in the middle of the cutting torch mounting portion 27.
8 are connected to each other, and the cutting torch portion 26 is arranged so as to maintain the pressed state against the column a.

Reference numeral 38 denotes a column feed fit switch, which has a column forward switch and a column backward switch. A main operation panel 39 includes a power lamp, a hose overwind buzzer switch, an overwind buzzer, an overwind display lamp, a write button for numerical control, and a rotary drum 12.
Starting button for controlling the center of the, numerical control button, torch arm standby button with torch arm as the standby position, torch arm disconnection position button, clamp open button, clamp close button, torch feed rotation direction instruction switch, speed control button, Manual / auto switch,
It has a torch operation button, a torch stop button, etc.
Further, the main operation panel 39 is attached to the body frame 11 via an arm so as to be rotatable at an arbitrary position.

Then, the automatic cutting / machining apparatus for a column such as a corner or a round steel pipe of this embodiment operates as follows. First, the column a to be cut is placed on the roller conveyor unit 1, and then the hydraulic cylinder 1 is sized according to the size of the column a.
8 is operated to move the rotary drum 12 up and down via the guide frame 15, and the center of the rotary drum 12 and the center of the column a are automatically positioned by numerical control.

Next, the roller drive device 8 is driven (the column feed fit switch 38 is operated to drive) to operate the V-shaped roller 7, and the hydraulic cylinder 16 is operated.
The V-shaped roller 7 is moved upward to abut against the column a, thereby advancing the column a via the roller conveyor 5 and moving it to a predetermined position, after which the advancing of the column a is stopped. The column holding member 9 of the column clamp portion 2 is moved down by the hydraulic cylinder 10 to hold the column a.

In this state, the push button switch of the operation panel 39 is operated, and the air cylinder 28 attached to the inner ring of the rotary drum 12 moves the cutting torch portion 26 of the column cutting portion 4 through the cutting torch mounting portion 27. The main guide roller 35 and the auxiliary guide rollers 36 and 37 are pressed against the column a. Then, the rotary drum rotation control unit 13 is operated, the electronic stepless speed change motor 19 is activated, the rotary drum 12 is rotated through the timing belt 21, and the DC motor control device is operated to change the rotation speed. It is set to a variable state so that the cutting speed can be freely selected. At the same time, the tilt angle and the torch gap of the cutting torch 29 are adjusted according to the preset cutting state.

Then, by rotating the rotary drum 12, the cutting torch portion 26 is passed through the self-standing copying device portion 31.
, The main guide roller 35, the auxiliary guide roller 36,
By 37 (see FIG. 9), the outer peripheral shape of the column a is followed and the movement is made so that the cutting process and the groove process of the column a can be performed in parallel. In addition, front and rear groove processing can be performed at the same time.

The present invention is not limited to the above-described embodiments, but includes modifications that can be implemented without changing the gist of the present invention. Incidentally, in the embodiment of the present invention, a welding torch may be attached instead of the cutting torch to implement the welding apparatus. Further, in the present specification, the V-shape forming the V-shaped feed roller and the roller conveyor is a concept including a U-shape and a concave shape. Furthermore, in the present embodiment, the configuration in which two cutting torches are arranged has been described, but a configuration in which only one cutting torch is arranged may be adopted. In addition, the rotary drum may be configured to be movable in the left and right directions as necessary. The cutting torch includes a cutting torch such as an arc cutting process and a laser beam cutting process in addition to the gas cutting process.

[0023]

As is apparent from the above description, according to the automatic cutting apparatus for a column such as a corner or a round steel pipe of the present invention,
Since the roller conveyor and the column feed drive mechanism are formed in a V shape, the column can be held in a stable state, and the inclination angle of the cutting torch can be adjusted according to the set groove of the column. Since the cutting process and the groove process of the column can be processed in parallel, and the cutting torch is rotated along the outer periphery of the column, the cutting accuracy can be improved. Have.

Further, according to the present invention, since the processing accuracy is improved, there is an effect that labor can be saved by continuously performing automatic welding by the welding robot in the next step. Equipment such as a saw machine, a groove processing machine, and a conveyor line are not required, so the equipment cost of the processing line,
The running cost can be reduced. Further, since the automation can be performed by the operation panel, there is an effect that even an amateur can easily perform the working work.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view.

FIG. 3 is a side view from the rotary drum side.

FIG. 4 is a vertical cross-sectional view of the center of FIG.

FIG. 5 is a side vertical sectional view.

FIG. 6 is an enlarged front view of a cutting torch unit.

FIG. 7 is a plan view of FIG.

FIG. 8 is a side view of the copying drive unit.

FIG. 9 is an explanatory diagram for explaining a copying drive state.

[Explanation of symbols]

1 ... Column conveyor section, 2 ... Column clamp section, 3 ... Rotary drum section, 4 ... Column cutting section, 5 ... Roller conveyor, 6 ... Column feed drive mechanism, 7 ... ..V-shaped feed rollers, 8 ... Roller drive device (usually using an electric geared motor), 1
6 ... hydraulic cylinder, 9 ... column pressing member,
10 ... hydraulic cylinder, 11 ... main body frame,
12 ... Rotary drum, 13 ... Rotary drum rotation control section, 14 ... Hose drive section, 15 ...
..Guide frames, 17 ... Linear ways, 18
..Hydraulic cylinders, 19 ... Electronic continuously variable motors, 21 ... Timing belts, 22 ... Followed pulleys, 23 ... Rollers, 24 ... Gas supply hoses, various hoses such as electric wires, 25: Fixture, 26 ...
Cutting torch part, 27 ... Cutting torch mounting part, 28
..Air cylinders, 29 ... Cutting torches, 30 ...
・ Torch adjuster, 31 ・ ・ Self-sustaining copying device section, 32
・ ・ ・ Adjustment hardware, 33 ・ ・ ・ Adjustment screw, 34 ・ ・ ・ Spacing adjustment handle, 35 ・ ・ ・ Main roller, 36 ・ ・ ・ Auxiliary roller, 37 ・ ・ ・ Auxiliary roller, 38 ・ ・ ・ Column feed fit Switch, 39 ... Main operation panel, 40 ...
··spring

Claims (3)

[Claims] 1. A V-shaped column feed drive mechanism is provided in a part of a conveyor such as a roller conveyor having a V-shaped column mounting portion, and the column conveyor is provided at a front portion in the column advancing direction by the roller conveyor. A rotary drum that rotates along the outer circumference is provided, and a cutting torch portion that moves along the circumference of the column is provided on the rotary drum, and the cutting torch portion has an inclination angle along the length direction of the column. A corner characterized by being provided with a free cutting torch so that cutting processing and groove processing of the column can be processed in parallel.
Automatic cutting machine for columns such as round steel pipes. 2. A rotary drum is arranged so as to be vertically movable,
The automatic cutting processing device for a column of a corner, a round steel pipe or the like according to claim 1, wherein the center of the rotary drum can be set to the center of the column. 3. An automatic cutting process for columns such as corners and round steel pipes according to claim 1, wherein a gas supply hose for the cutting torch is freely wound around the outer periphery of a rotary drum and is connected to a hose drive device. apparatus.