KR19990075001A - Combined laser cutting machine for both cutting and engraving - Google Patents

Abstract

The present invention relates to a compound laser processing machine capable of performing both cutting and engraving operations, wherein the engraving processing head 30 on the path of the beam (B) emitted from the laser generator 10 installed on the frame (1) And a beam switch 50 for refracting the beam B irradiated toward the machining head 30 for engraving to the horizontal direction by 90 degrees, and the beam B refracted by the beam switch 50 is provided. A bending block 60 for refracting the beam B 90 degrees in a vertical direction is installed on a path, and a cutting head 40 is provided at a vertical lower portion of the bending block 60 to provide the beam switch 50. By cutting the beam (B) emitted from the laser generator 10 toward the engraving head 30 or the cutting head 40 to cut or engrave the workpiece loaded on one table (2) Combined laser engraving machine .

Description

LASER MACHINE FOR MULTI PROCESS OF CUTTING AND ENGRAVING

The present invention relates to a laser processing machine of the present invention, and more particularly, to a composite laser processing machine capable of performing both cutting and engraving operations.

Laser beam machine is used are classified according to the type of material which generates a laser, a laser processing machine to be industrially used as is usually CO _2, N, and He and CO ₂ laser using a gas mixture as laser-generating material, Nd: laser a YAG Nd: YAG laser used as a generating material is mainly used.

The Nd: YAG laser usually generates a beam having a wavelength of 1.06 mu m, and is mainly used for welding a piece of metal or a thin sheet metal. The CO₂ laser generates a beam with a wavelength of 10.6㎛ which is relatively longer than Nd: YAG laser, and mainly uses non-metal materials for engraving or cutting.

In other words, Nd: YAG laser is mainly used for processing metal materials, and CO₂ laser is mainly used for non-metal materials such as plastic or wood. This is because the laser equipment used for engraving has a structure in which the lens part is open and cannot inject an auxiliary gas used for cutting metal, so the laser equipment for engraving cannot be used for cutting and is only used for engraving.

Therefore, conventionally, in order to process a product including a engraving process and a cutting process, CO2 laser equipment, which is a engraving laser equipment, and Nd: YAG laser equipment, which is a cutting laser equipment, must be separately provided. .

In particular, when cutting and engraving are to be performed separately in separate laser equipment, the product must be set again for each operation. Therefore, the reference position is set when the product after one process (for example, cutting process) is transferred to the next process (engraving process). There is a problem that can cause a defect, and if you pay close attention to the setting to prevent this quality defect, the production efficiency is lowered.

The present invention is designed to solve the problems with the conventional laser processing machine, combined cutting and engraving combined laser processing machine to be able to perform both cutting and engraving work with one CO₂ laser equipment in the state of loading the workpiece on the table The purpose is to provide.

The present invention for achieving the above object is a CO2 laser generator, a beam enlarger for expanding the beam emitted from the CO2 laser generator to the size required for processing, installed on a beam path irradiated in a straight line through the beam enlarger in the laser generator. Cutting head for engraving work, cutting head arranged in the direction orthogonal to each other for the engraving head, and beam for selectively redirecting the beam to be enlarged and irradiated through the beam enlarger toward the cutting head or the engraving head Switch, a bending block for refracting the beam irradiated by the beam switch toward the cutting head for cutting, a workpiece table on which a workpiece is fixed and supported, and a CNC controller for controlling the direction switching operation of the beam switch and controlling the position of the workpiece table. In a configuration that includes It is.

According to the present invention configured as described above, the beam switch installed between the beam enlarger and the engraving work head is controlled by the controller to bend the beam to the cutting head for cutting work or pass it to the cutting head for the engraving work as it is input to the controller. As instructed, the work loaded on the table will be cut or sculpted.

1 is a perspective view schematically showing the configuration of a compound laser processing machine according to the present invention,

Figure 2 is a perspective view schematically showing the internal structure of the beam switch of the composite laser processing machine according to the present invention,

(a) is a state in which the first mirror is raised to switch the direction of the beam toward the cutting head for cutting work,

(b) is a view of a state in which the first mirror is lowered and passed through the head for engraving without refracting the beam,

Figure 3 is a perspective view schematically showing a structure of a machining head for engraving of a compound laser processing machine according to the present invention,

Figure 4 is a longitudinal assembly cross-sectional view showing the structure of the cutting head for the cutting operation of the compound laser processing machine according to the present invention.

※ Explanation of code about main part of drawing ※

1: frame 2: workpiece table

3: CNC controller B: beam

10: laser generator 20: beam enlarger

30: engraving head 31: casing

32, 33: second mirror, third mirror 34: condenser lens

35,36: Motor 40: Machining head for cutting

41: casing 42: condenser lens

43: auxiliary gas inlet pipe 50: beam switch

51: casing 51a, 51b, 51c: first, second, third hole

52: guide rail 53: mirror plate

54: first mirror 55: pneumatic cylinder

56: piston rod 60: bending block

Hereinafter, an embodiment of a compound laser processing machine according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the composite laser processing machine according to the present invention enlarges the frame 1, the CO 2 laser generator 10, and the beam B emitted from the CO 2 laser generator 10 to a size necessary for processing. The beam enlarger 20 to be sculpted, the processing head 30 for the engraving work installed on the beam path irradiated in a straight line from the laser generator 10 via the beam expander 20, the processing head 30 for the engraving work Beam switch for selectively turning the cutting head 40 disposed in the direction orthogonal, the beam to be irradiated through the beam enlarger 20 to the cutting head 40 for cutting work or the processing head 30 for engraving work (50), a bending block (60) for refracting the beam irradiated by the beam switch (50) toward the cutting head (40) for cutting, a work table (2) for mounting and supporting a work, and the beam switch (50) Room It has a structure including a CNC controller 3 for controlling the switching operation and to control the position of the workpiece table (2).

As shown in Figs. 2A and 2B, the beam switch 50 is provided with a casing 51 fixed on the frame 1, and a pair of parallels inside the casing 51. One guide rail 52 is fixed in a 45 ° direction with respect to the direction of the beam B irradiated from the laser generator 10. The guide rail 52 is provided with a mirror plate 53 with a first mirror 54 attached to the center thereof so as to be slidable in the vertical direction. The mirror plate 53 is disposed below the mirror plate 53. An actuator for lifting up and down is connected.

Here, the actuator is a pneumatic cylinder 55 controlled by the controller 3 as shown in Fig. 2A. However, the actuator is not limited to the pneumatic cylinder 55 but may be configured as a servo motor.

In addition, the front and rear side walls of the casing 51 of the beam switch 50, the first hole (51a) and the second hole (51b) for passing the beam irradiated from the laser generator 10 as it is toward the rear processing head 30 ) Is drilled on the beam path. The third hole 51c perpendicular to the horizontal direction perpendicular to the first and second holes 51a and 51b penetrates the side wall of the casing 51 to cut the beam B emitted from the laser generator 10. It can be irradiated toward the working head 40.

Accordingly, as the pneumatic cylinder 55 is extended under the control of the controller 3, the mirror plate 53 of the beam switch 50 is raised together, so that the first mirror 54 attached to the mirror plate 53 is removed. Since the beam B, which has passed from the one hole 51a toward the second hole 51b, is deflected toward the third hole 51c, the beam B emitted from the laser generator 10 is the engraving head 30 for the engraving work. It is irradiated toward the cutting head 40 for the cutting operation is not irradiated to the) side to the cutting operation.

In addition, a bending for bending the beam B irradiated from the third hole 51c of the beam switch 50 to the condenser lens 42 inside the processing head 40 at an upper end of the cutting head 40 for cutting work. The block 60 is fixed.

Meanwhile, as shown in FIG. 3, the engraving head 30 is provided with a pair of second mirror 32 and a third mirror 33 facing each other inside the casing 31. At the lower part of the third mirror 33, a condenser lens 34 for condensing the beam onto the work piece on the table 2 is fixed. In addition, motors 35 and 36 for adjusting the angle of the mirrors are connected to the mirrors 32 and 33, respectively, so that the machining surfaces of the workpieces on which the motors 35 and 36 are loaded on the table 2 with respect to the table surface. Even when tilted at an arbitrary angle, the angles of the mirrors 32 and 33 are adjusted so that the beam B always gathers at one point.

And the cutting head 40 for cutting operations, as shown in Figure 4, is a known processing head 40 generally used. In this case, a condenser lens 42 for condensing a laser beam on a workpiece is fixedly installed in the casing 41, and a gas inlet pipe 43 for introducing an auxiliary gas into the casing 41 is provided under the casing 41. ) Is in communication.

Therefore, when the beam switch 50 refracts the beam emitted from the laser generator 10, the beam refracted by the beam switch 50 is irradiated toward the cutting head 40 for the cutting operation via the bending block 60 and the workpiece. Will be able to cut.

The composite laser processing machine of the present invention configured as described above operates as follows.

When the machine is loaded with several workpieces to be cut and sculpted on the table (2) at once, the workpiece table (2) moves back, forth, left, and right according to the instructions set in the CNC controller (3), and then the workpiece is cut. 40) The cutting work and the engraving work are all performed on one work piece while moving downwards or below the work head 30 for engraving work.

That is, when the CNC controller 3 extends the pneumatic cylinder 55 of the beam switch 50, the mirror plate 53 fixed to the end of the piston rod 56 of the pneumatic cylinder 55 is raised to the mirror plate. The first mirror 54 attached to the 53 is deflected toward the cutting head 60 for the cutting work, so that the beam irradiated toward the cutting head 30 for the engraving work is cut.

After the cutting operation is finished, the CNC controller 3 contracts the pneumatic cylinder 55 of the beam switch 50 and lowers the first mirror 54 which deflects the beam toward the cutting head 60 for cutting. The beam B emitted from the generator 10 is irradiated toward the processing head 30 for engraving, thereby carving the workpiece.

As described above, the multi-laser processing machine of the present invention loads several workpieces on the table once, and selectively controls the beams emitted from the laser generator toward the engraving head or the cutting head, and thus, two types of laser equipment. Laser processing can be done.

Therefore, according to the compound laser processing machine of the present invention, two types of work can be performed with one equipment, and thus the number of necessary equipments can be reduced, so the cost saving effect is large, and there is no need to change the loading for each work type. Tolerance accumulation can be reduced and work productivity can be improved.

Claims (1)

A CO2 laser generator 10, a beam expander 20 for expanding the beam B emitted from the CO2 laser generator 10 to a size required for processing, and a straight line through the beam expander 20 in the laser generator 10. Through the processing head 30 for engraving work provided on the beam path irradiated onto the beam, the cutting head 40 for cutting work disposed in a direction orthogonal to each other with respect to the engraving work head 30, and the beam expander 20 Beam switch 50 for selectively turning the beam to be irradiated to the cutting head 40 or the engraving head 30 for cutting, the cutting head 40 for the beam irradiated by the beam switch 50 A bending block 60 to be deflected toward the side, a workpiece table 2 on which the workpiece is mounted and supported, and a CNC controller 3 for controlling the direction switching operation of the beam switch 50 and controlling the position of the workpiece table 2. ) The beam switch 50 is fixedly installed in parallel to each other in a 45 ° direction with respect to the direction of the beam (B) irradiated from the laser generator 10 inside the casing 51 fixed to the frame (1). A pair of guide rails 52, a mirror plate 53 which is slidably mounted on the guide rails 52, and has a first mirror 54 at the center thereof, and which lifts the mirror plate 53 up and down. Combined laser cutting and engraving machines including actuators.