JPH09141463A - Ejector for hot cutting and working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to smoothly eject products by eliminating the hooking of the product and the remaining frames of works and to eject the products without getting into the remaining frames at the time of ejecting the products. SOLUTION: This ejector has a first ejecting means 70 having a horizontal moving means 70a which is disposed on the one extension in the longitudinal direction of a table 5 and is capable of horizontally moving the product 4a in the longitudinal direction in synchronization with the moving speed of a work clamp and a vertical moving means 70b which is capable of separating the product 4 perpendicularly from the work 4 by moving the horizontal moving means 70a in a perpendicular direction. The ejector has further a remaining frame transporting means 75 which is disposed behind the first ejecting means 70 and has the same height as the height of the working surface of the table 5, a second ejecting means 71 which receives the product 4a from the first ejecting means 70 and ejects the product outside when the vertical moving means 70b descends and a remaining frame supporting device which supports the remaining frames 76 on the side opposite to the work clamp 19 across the first ejecting means 70 as a center. The horizontal moving means 70a has a belt conveyor or roller conveyor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloading device for a product processed by a thermal cutting machine such as plasma, gas or laser.

[0002]

2. Description of the Related Art Thermal cutting machines using plasma, gas, laser or the like have been widely used. As such a thermal cutting machine, for example, there is one described in Japanese Utility Model Publication No. 6-34069, which includes FIGS. 6 and 7.
Is illustrated. 6 and 7 are vertical sectional views, which will be described below with reference to FIGS. 6 and 7. In the figure, the laser processing machine 1 is provided with an elongated table 5 in the product carrying-out direction (arrow A). An upright frame 6 is provided on the side surface of the table 5, and an upright frame 6 is provided above the table 5.
An upper frame 7 supported by is disposed. On the lower surface of the upper frame 7, there is provided a processing head 3 which is parallel to the table 5 and is movable in a direction orthogonal to the carry-out direction A. A work clamp (not shown) that is movable in parallel with the unloading direction A is provided at one end of the table 5 that is parallel to the unloading direction A. The work clamp, which is a workpiece, is clamped by the work clamp. The work 4 is moved in the carry-out direction A together with the processed product 4a. In addition, a work supporting device 80 that movably supports the work 4 in parallel with the unloading direction A is provided above the table 5.

A first shooter 12 and a second shooter 13 for discharging the product 4a are arranged at a predetermined interval in the carry-out direction A on the downstream side of the processing head 3 of the table 5. One end of the first shooter 12 on the side of the processing head 3 is pivotally attached to the table 5, and the other end of the first shooter 12 is pivoted downward by a drive cylinder 14 about this pivotal portion. On the other hand, the second shooter 13 is for discharging a large product 4a that cannot be discharged by the first shooter 12, and is pivotally attached to the downstream end of the table 5, and the other end is centered around this pivotal attachment. It is rotated downward by the drive cylinder 11.

The drive cylinder 14 allows the first shooter 1 to
A product transfer device 15 is provided on the downstream side of the position when 2 rotates downward. The product transport device 15 is the first
The product 4a carried out by the shooter 12 is further transported to a predetermined place outside the processing machine. FIG. 6 shows an example in which a belt conveyor is used as the product transfer device 15, and the product transfer direction is orthogonal to the carry-out direction A.

A dust collecting chamber 8 having a closed structure is arranged below the table 5. A blower 9 is connected to the dust collection chamber 8 so that the gas generated during processing of the work 4 is sucked by the blower 9. At the same time, a filter 10 is connected to the exhaust side of the blower 9 so that harmful substances are removed from the sucked gas and then discharged to the atmosphere outside the processing machine.

FIG. 7 shows an example in which the product carrying direction of the product carrying device 15 in FIG. 6 is the same as the carrying-out direction A.

[0007]

In the conventional thermal cutting machine described above, the first shooter 1 is driven by the drive cylinder 14.
When the workpiece 4 is conveyed to the upper part of the first shooter 12 in a state where the workpiece 2 is tilted, the product 4 which has been completely cut by the processing head 3
a is dropped onto the product transport device 15 by the first shooter 12 and is carried out. Therefore, as shown in FIG. 8, the product 4 a inclines with respect to the work 4 in the first shooter 12 part. However, at this time, if the plate thickness of the work 4 is large or the clearance C when the product 4a is cut from the work 4 is narrow, a catch occurs between the product 4a and the remaining frame of the work 4. For this reason, there arises a problem that the product 4a is not separated from the work 4 and does not drop onto the first shooter 12. Particularly in recent years, the ability of plasma cutting or laser cutting is improved, the clearance C is reduced, and a thick plate is machined, so that this problem has become remarkable.

Further, as shown in FIG. 9, in the process of conveying the work 4 after the cutting work to the second shooter 13, the product 4a may go under the remaining frame of the work 4 and remain on the table 5. . As a result, there is a problem that the large product 4a is not separated and carried out by the second shooter 13, and improvement is strongly desired.

The present invention has been made by paying attention to the above-mentioned problems, and when the product is carried out, the product can be carried out smoothly without being caught between the product and the work remaining frame, and the product does not slip into the remaining frame. It is an object of the present invention to provide a carry-out device of a thermal cutting machine that can be carried out by.

[0010]

In order to achieve the above object, the carry-out device of the thermal cutting machine according to the present invention has a table 5 mounted on an upper frame 7 provided above a horizontal table 5. Direction perpendicular to the longitudinal direction (Y axis)
Clamp the work head 3 that can move to the
A work clamp 19 movable in a direction parallel to the longitudinal direction (X axis) is provided, and a laser beam or a plasma arc is radiated from the tip of the processing head 3 toward the work 4 on the table 5, In the thermal cutting machine for cutting the product 4a from the product 4, the product 4a is arranged on one extension of the table 5 in the longitudinal direction, and the product 4a is horizontal in the longitudinal direction in synchronization with the moving speed of the work clamp 19. The first unloading means 70 having a movable horizontal moving means 70a and a vertical moving means 70b capable of vertically moving the horizontal moving means 70a to vertically separate the product 4a from the work 4 is provided. There is.

With this structure, the horizontal moving means of the first discharging means can be rotated in synchronization with the discharging speed of the remaining frame and the product, and the horizontal moving means can be vertically lowered. As a result, the product falls by its own weight in the vertical direction with respect to the remaining frame while being placed on the horizontal moving means. Therefore, even when the clearance between the product and the residual frame is narrow or when the work plate thickness is large, the product is reliably separated from the residual frame. As a result, the product and the remaining frame are not caught and the product does not slip in, and the product can be smoothly carried out. In addition, even a large product can be smoothly carried out by the first carrying-out means because it does not slip into the remaining frame during carrying. Moreover, since the delivery of the product is also performed by the common first delivery means, the workability of delivering the product can be improved.

Further, in the carry-out device of the thermal cutting machine, the processing head 3 is movable on the upper frame 7 provided above the horizontal table 5 in the direction perpendicular to the longitudinal direction of the table 5 (Y axis). And a work clamp 19 that clamps the work 4 and is movable in a direction (X axis) parallel to the longitudinal direction. The laser light is directed from the tip of the processing head 3 to the work 4 on the table 5. Alternatively, in a thermal cutting machine that irradiates a plasma arc to cut the product 4a from the work 4, the product 4a is disposed on one extension of the table 5 in the longitudinal direction, and the product 4a is attached to the work clamp 1.
A horizontal moving means 70a capable of moving horizontally in the longitudinal direction in synchronization with the moving speed of 9 and a vertical moving means 70b capable of vertically moving the horizontal moving means 70a to separate the product 4a from the work 4 in the vertical direction. A first unloading means 70 having
The remaining frame conveying means 75, which is disposed behind the first unloading means 70 and has the same height as the processing surface of the table 5, and the first unloading means 70.
When the vertical moving means 70b of the
And a second unloading means 71 for receiving the product 4a from 0 and unloading it to the outside.

With the above-mentioned structure, the product and the remaining frame can be securely separated without being caught by the same operation as in claim 1, and the product can be smoothly carried out.
Further, the separated residual frame is smoothly and surely carried out by the residual frame conveying means having the same height as the machining surface of the machining table. Further, the second carry-out means receives the product carried out by the first carry-out means, and carries out the product to a product receiver or the like at a predetermined position outside the cutting machine. By freely changing the carrying direction of the second carrying-out means, the product is carried out in an appropriate direction downstream of the cutting machine. As a result,
The layout of the cutting machine and the unloading means can be changed flexibly, and efficient work can be performed in an appropriate work state.

Further, the carry-out device of the thermal cutting machine is provided with a residual frame supporting device 20 for supporting the residual frame 76 of the work 4 on the side facing the work clamp 19 with the first carrying-out means 70 at the center. ing.

With the above construction, when the first carry-out means descends, the remaining frame is supported on one side by the work clamp and on the other side by the remaining frame supporting device. Therefore, only the product descends together with the first unloading means and is transported to the second unloading means on the downstream side, and the residual frame is transported to the residual frame transporting means by the work clamp. As a result, the remaining frame can be reliably carried out, and the workability can be improved.

In the carry-out device of the thermal cutting machine, the horizontal moving means 70a of the first carry-out means 70 is equipped with a belt conveyor or a roller conveyor.

With the above structure, when the remaining frame is supported and carried out by the work clamper and the remaining frame supporting device, the belt which is an example of the horizontal moving means of the first carrying-out means is synchronized with the carrying-out speed of the remaining frame. Rotate the conveyor or roller conveyor. Since the product on the conveyor moves in synchronization with the remaining frame, the product does not slip into the product. As a result, the products can be smoothly separated and carried out, and the workability of carrying out can be improved.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a carry-out device for a thermal cutting machine according to the present invention will be described in detail below with reference to the drawings. As a thermal cutting machine, there are cutting machines such as plasma, gas, and laser. In this embodiment, a laser processing machine will be described as an example.

FIG. 1 is an overall configuration diagram of the laser processing machine 1. In the laser processing machine 1 shown in FIG.
The example of the axial light movement type laser processing machine is shown. In FIG. 1, a laser beam machine 1 is provided on a lower frame 2 and above the lower frame 2, on which a workpiece 4 to be machined is placed, and a table 5 which is long and slender in a conveying direction A of the workpiece 4.
And Further, a standing frame 6 attached to the lower frame 2 is provided on the side of the long side of the table 5, and an upper frame 7 attached to the standing frame 6 is provided above the table 5. Has been done. Then, the lower surface of the upper frame 7 is moved in a direction parallel to the table 5 and perpendicular to the longitudinal direction of the table 5 (hereinafter, referred to as Y-axis direction) by a command from a controller (not shown). There is provided a processing head 3 for processing a work 4 by irradiating a laser beam output from a laser oscillator (not shown) from its tip end with a command from the control device.

Further, the laser beam machine 1 supports a work 4 and moves the table 5 in a direction parallel to the longitudinal direction of the table 5 (hereinafter, this moving direction is referred to as an X-axis direction). 40 is provided. The work moving device 40 is provided on the side of the table 5 and is attached to an upper part of the table 5 and a moving device 16 that moves the work 4 in the X-axis direction. It is composed of a work supporting device 80 which supports the work freely.

The moving device 16 includes a carriage base 17 extending along the table 5 in the X-axis direction on the side of the standing frame 6, and a carriage 18 movable on the carriage base 17 in the X-axis direction. And a plurality of work clamps 19 attached to the carriage 18 and gripping one end side of the work 4. The carriage 18 moves in the X-axis direction by a drive device that receives a movement command from a control device (not shown).

A first unloading means 70 is arranged in the central portion of the table 5 downstream of the processing head 3. Further, on the downstream side of the first unloading means 70, there are a residual frame conveying means 75 provided at the same height as the processing surface of the table 5, and a second unloading means 71 provided below the residual frame conveying means 75. Is provided.

Further, the remaining frame supporting device 20 is arranged at a position facing the moving device 16 with the first carrying-out means 70 at the center and at the same height as the work supporting device 80. The moving device 16 and the remaining frame support device 20 respectively grip and support the opposite side ends of the work 4 and carry out the work. The remaining frame support device 20 has the same function as the work support device 80, and supports the work 4 movably in the X-axis direction.

FIG. 2 is a vertical sectional view of the laser processing machine 1. In FIG. 2, the first carry-out means 70 is a horizontal moving means 7.
0a and vertical moving means 70b. The horizontal moving means 70a horizontally moves the product formed by cutting the work 4 in the X-axis direction.
b supports the horizontal moving means 70a so as to be movable,
Moreover, it moves vertically. Horizontal movement means 7
0a is composed of, for example, a belt conveyor or a roller conveyor as in this embodiment. Also, the vertical moving means 70b
Includes a support frame 53 that is vertically expandable and contractible, and a lifting hydraulic cylinder 52 that expands and contracts the support frame 53. The extendable support frame 53 has a structure in which the height can be expanded and contracted by changing the angle of the intersecting frames in this embodiment, but the invention is not limited to this, and the Z-shaped upper and lower parts can be used. Any mechanism that moves parallel to

A roller conveyor, which is an example of the residual frame conveying means 75, conveys the residual frame 76 separated from the product 4a. Further, the belt conveyor, which is an example of the second unloading means 71,
The product 4a is received from the first unloading means 70 and transported downstream. The remaining frame conveying means 75 and the second unloading means 71 may be configured by a belt conveyor, a roller conveyor, or the like, respectively. In addition, the first unloading means 70,
The belt conveyor, which is an example of the second unloading means 71, the remaining frame conveying means 75, etc., can be driven by any type of motor drive such as an electric type, a hydraulic type, or a pneumatic type.

Further, a product shooter 72 and a product receiver 73 may be arranged downstream of the second carry-out means 71 depending on the method of collecting the product 4a and the working environment. The product 4a is delivered from the second carry-out means 71 onto the product shooter 72, and then collected on the product receiver 73 via the product shooter 72.

The vertical moving means 7 of the first carry-out means 70 is shown in FIG.
0b is shown in detail, and the first unloading means 70 will be described in detail below with reference to FIG. Below the belt conveyor, which is an example of the horizontal moving means 70a, a vertical moving means 70b that rotatably supports the belt conveyor is provided.
An upper frame 51 that supports the belt conveyor is arranged above the vertical moving means 70b, and a support frame 53 that supports the upper frame 51 so that the upper frame 51 can move up and down, and a lower frame 50 that fixes the lower end of the support frame 53. Are installed. An elevating hydraulic cylinder 52 is rotatably mounted between the upper frame of the support frame 53 and the lower frame 50.

The lifting hydraulic cylinder 52 has a switching valve 57.
Pressure oil is supplied from the hydraulic pump 58 via the. The head 52a of the lifting hydraulic cylinder 52 is connected to one output port of the switching valve 57 by the pipe line 55, and the bottom 52b is connected to the other output port of the switching valve 57 via the pipe line 56 and the pilot operation check valve 54. Has been done. Further, the operating pilot pipe of the pilot operation check valve 54 is connected to the pipe line 55. A command signal is output to the operation solenoid of the switching valve 57 from a control device (not shown). The pilot operated check valve 54 prevents pressure oil from flowing out from the bottom 52b to the switching valve 57 so that the lifting hydraulic cylinder 52 does not contract due to the weight of the first carry-out means 70 when the switching valve 57 is in the neutral position. To prevent. Then, when driving in the descending direction, the operation pilot pipe gradually opens and closes the pilot operation check valve 54 based on the magnitude of the oil pressure in the pipe line 55, and the pressure oil is transferred from the bottom 52b to the tank via the switching valve 57. Is leaked.

In such vertical moving means 70b,
The hydraulic pump 58 is driven and the switching valve 57 is switched, and the pressure oil from the hydraulic pump 58 is sent to the lifting hydraulic cylinder 52 via the pilot operation check valve 54. As a result, the support frame 53 moves up and down, and the horizontal moving means 70a moves up and down. When it reaches a predetermined position, the switching valve 57 is switched to the neutral position to stop the operation of the lifting hydraulic cylinder 52. After the stop, the pilot operation check valve 54 can prevent the support frame 53 from lowering its own weight, and the horizontal moving means 70a is stopped at a predetermined position. The vertical movement amount (indicated by H in the figure) of the horizontal movement means 70a at this time is
It is controlled by the stroke amount of the lifting hydraulic cylinder 52. Instead of the lifting hydraulic cylinder 52, it is also possible to drive up and down by a drive device such as an air cylinder, a motor and a ball screw, or a motor and a rack and pinion.

FIG. 4 is an external plan view of the laser processing machine 1. As shown in FIG. 4, the unloading direction of the product 4a by the second unloading means 71 can be changed depending on the method of collecting the product 4a and the working environment. Although the drawing shows an example in which the first unloading unit 70 is parallel to the unloading direction A and a case in which the first unloading unit 70 is orthogonal to the unloading direction A, the present invention is not limited thereto.

Next, the operation according to the present invention will be described with reference to FIG. FIG. 5 is a control function block diagram of the laser processing machine 1. The control device 81 outputs a command to the moving device 16, clamps the workpiece 4 to be machined on the table 5 by the workpiece clamp 19, and moves the workpiece 4 under the machining head 3. When the control device 81 outputs a laser output command to the laser oscillator 82, the laser oscillator 82
A laser beam is output from the laser beam. The laser beam is guided to the laser torch of the processing head 3 through an optical path laid in the upright frame 6 and the upper frame 7, and irradiated from the tip of the laser torch. At the same time, the control device 81 outputs a command to the moving device 83 of the processing head 3 to output the processing head 3.
To control the movement of the work 4 in the X-axis direction by outputting a command to the movement device 16. The simultaneous control of the movements in the Y-axis and X-axis directions is performed based on the previously entered trajectory along the predetermined product shape, whereby the product 4a having the predetermined shape is cut from the work 4.

Further, after the cutting is completed, the control device 81 moves the work 4 in the X-axis direction by the moving device 16 and conveys it to the upper part of the first unloading means 70. At this time, the cut product 4 a together with the remaining frame of the work 4 is conveyed to the upper part of the first discharging means 70. Then, the control device 81 outputs a command to the horizontal moving means 70a of the first unloading means 70, and the horizontal moving means 70a is moved at a speed equal to the moving speed of the moving device 16 in the X-axis direction (here, the same as the unloading direction A). To move.
Therefore, the remaining frame moves above the first unloading means 70 while being supported by the moving device 16 and the remaining frame supporting device 20, and in synchronization with this, the product 4a also moves on the horizontal moving means 70a.

When the product 4a reaches a predetermined position such that the entire product 4a is above the first unloading means 70, the controller 81 commands the switching valve 57 of the vertical moving means 70b of the first unloading means 70. Is output, and the vertical moving means 70b is lowered. At this time, the moving device 16 and the horizontal moving means 70
The movement of a in the X-axis direction may be stopped, or may be moved in synchronization without being stopped. As a result, the product 4a and the remaining frame are not caught, and the product 4a is smoothly separated and placed on the vertical moving means 70b to descend. Also,
The remaining frame is carried out to the upper part of the remaining frame carrying means 75 while being supported by the moving device 16 and the remaining frame supporting device 20, and is carried out to the outside by the remaining frame carrying means 75. The separated product 4a is carried out from the first carry-out means 70 to the second carry-out means 71, and further carried out to the product receiver 73 via the product shooter 72 and the like.

By increasing the length of the first carry-out means 70 in the carry-out direction A, the first carry-out means 7 can be used even for a large product 4a.
It can be carried out at the 0 position. At this time, since the product 4a descends in the vertical direction, the large product 4a is not caught by the remaining frame, and can be smoothly separated and carried out.

[Brief description of the drawings]

FIG. 1 is an overall view of a laser processing machine according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a laser processing machine according to an embodiment of the present invention.

FIG. 3 is a detailed view of vertical moving means of the first carrying-out means of the laser processing machine according to the embodiment of the present invention.

FIG. 4 is an external plan view of the laser processing machine according to the embodiment of the present invention.

FIG. 5 is a control function block diagram of the laser processing machine of the present invention.

FIG. 6 is a vertical cross-sectional view of a laser beam machine for explaining a conventional technique. (Figure A)

FIG. 7 is a vertical cross-sectional view of a laser beam machine for explaining a conventional technique. (Figure B)

FIG. 8 is a cross-sectional view of a product and a residual frame that are caught in the conventional art.

FIG. 9 is a sectional view of a catch of a work for explaining a conventional technique.

[Explanation of symbols]

1 ... Laser processing machine, 2, 50 ... Lower frame, 3 ... Processing head, 4 ... Work piece, 4a ... Product, 5 ... Table, 6 ...
Standing frame, 7, 51 ... Upper frame, 8 ... Dust collection chamber,
9 ... Blower, 10 ... Filter, 11, 14 ... Drive cylinder, 12 ... 1st shooter, 13 ... 2nd shooter, 15 ...
Product conveying device, 16 ... Moving device, 17 ... Carriage base, 18 ... Carriage, 19 ... Work clamp, 20 ...
Remaining frame support device, 40 ... Work moving device, 52 ... Lifting hydraulic cylinder, 53 ... Support frame, 54 ... Pilot operated check valve, 55, 56 ... Pipe line, 57 ... Switching valve, 58 ... Hydraulic pump, 70 ... First unloading means, 70a ... Horizontal moving means, 70b ... Vertical moving means, 71 ... Second unloading means, 72
Product shooter 73 Product receiver 75 Remaining frame conveying means 76 Remaining frame 80 Work support device 81 Control device 82 Laser oscillator 83 Moving device

Claims (4)

[Claims] 1. A machining head (3) movable in a direction (Y axis) perpendicular to the longitudinal direction of the table (5) on an upper frame (7) provided above the horizontal table (5), work
(4) is clamped, and the direction (X
Equipped with a movable work clamp (19) on the axis, and irradiates a laser beam or plasma arc from the tip of the processing head (3) to the work (4) on the table (5) to
In the thermal cutting machine for cutting the product (4a), the product (4a) is arranged on one extension of the table (5) in the longitudinal direction, and the product (4a) is synchronized with the moving speed of the work clamp (19). Then, the horizontal moving means (70a) capable of moving horizontally in the longitudinal direction and the vertical moving means capable of vertically separating the product (4a) from the work (4) by moving the horizontal moving means (70a) in the vertical direction. (70b)
A carry-out device for a thermal cutting machine, comprising a first carry-out means (70) having 2. A machining head (3) movable in a direction (Y axis) perpendicular to the longitudinal direction of the table (5) on an upper frame (7) provided above the horizontal table (5), work
(4) is clamped, and the direction (X
Equipped with a movable work clamp (19) on the axis, and irradiates a laser beam or plasma arc from the tip of the processing head (3) to the work (4) on the table (5) to
In the thermal cutting machine for cutting the product (4a), the product (4a) is arranged on one extension of the table (5) in the longitudinal direction, and the product (4a) is synchronized with the moving speed of the work clamp (19). Then, the horizontal moving means (70a) capable of moving horizontally in the longitudinal direction and the vertical moving means capable of vertically separating the product (4a) from the work (4) by moving the horizontal moving means (70a) in the vertical direction. (70b)
A first unloading means (70) having a first unloading means, a remaining frame transporting means (75) disposed behind the first unloading means (70) and having the same height as the processing surface of the table (5), A second unloading means (71) for receiving the product (4a) from the first unloading means (70) and unloading it when the vertical moving means (70b) of the means (70) descends. Carrying out device of heat cutting machine. 3. The remaining frame (76) of the work (4) on the side facing the work clamp (19) with the first unloading means (70) at the center.
The carry-out device of the thermal cutting machine according to claim 1 or 2, further comprising a remaining frame support device (20) for supporting the. 4. The horizontal moving means (7) of the first unloading means (70).
0a) is provided with a belt conveyor or a roller conveyor, The carry-out apparatus of the thermal cutting machine of claim 1, 2 or 3.