CN219542001U - Vision system for laser cutting - Google Patents

Abstract

The utility model relates to the technical field of anti-dazzle, in particular to a vision system for laser cutting, which comprises a vision device and a fixing device, wherein the vision device is arranged in the fixing device and comprises a camera, an illumination device and a light filtering device are also arranged in the fixing device, the illumination device and the light filtering device are sequentially arranged below the camera, and the camera, the illumination device and the light filtering device are coaxially arranged. The utility model can filter the reflected light of the lighting device and the plate and the light of the external light source through the light filtering device, thereby improving the use effect of the vision system, greatly improving the working environment of the vision system, monitoring the actual cutting effect and action under various working conditions, improving the cutting precision, and greatly improving the use stability and the environmental adaptation of the equipment.

Description

Vision system for laser cutting

Technical Field

The utility model relates to the technical field of anti-dazzle, in particular to a vision system for laser cutting.

Background

The laser cutting machine focuses the laser emitted from the laser into high power density laser beam through the light path system, the laser beam irradiates the surface of the workpiece to make the workpiece reach the melting point or boiling point, and the high pressure gas coaxial with the laser beam blows away molten or gasified metal.

In the prior art, in order to better ensure the accuracy of the plate cutting process, a vision system is used for positioning the position of the plate, so that the positioning cutting is performed, or the whole cutting process is monitored, and the laser cutting process can be better supervised and controlled.

However, since the laser is used in the laser cutting, when the vision system is used for observing the plate or the cutting process, the reflection of the plate and the strong light generated in the cutting process are easily affected, so that the visual field of the vision system is occupied by the glare, and the use effect of the vision system is poor and even the vision system cannot work normally.

Disclosure of Invention

Aiming at the problems that the vision system used in the current laser cutting is easily affected by the reflection of the plate and strong light generated in the cutting process, so that the effect of the vision system is poor and even the vision system cannot work, the utility model provides the vision system for laser cutting.

In order to achieve the above purpose, the technical scheme adopted by the utility model is that the vision system for laser cutting comprises a vision device and a fixing device, wherein the vision device is arranged in the fixing device, the vision device comprises a camera, a lighting device and a light filtering device are further arranged in the fixing device, the lighting device and the light filtering device are sequentially arranged below the camera, and the camera, the lighting device and the light filtering device are coaxially arranged. The utility model can filter the reflected light of the lighting device and the plate and the light of the external light source through the light filtering device, thereby improving the use effect of the vision system, greatly improving the working environment of the vision system, monitoring the actual cutting effect and action under various working conditions, improving the cutting precision, and greatly improving the use stability and the environmental adaptation of the equipment.

Preferably, the fixing device comprises a shell and an upper cover connecting plate fixedly connected with the shell, the camera is arranged above the upper cover connecting plate, the lighting device is arranged below the upper cover connecting plate relatively, a bending part is arranged below the upper cover connecting plate, and the light filtering device is fixed on the bending part and located below the lighting device. The existence of the shell protects the internal camera from being interfered by external environment, so that the service time of the equipment is prolonged, and the use cost is reduced.

Preferably, the optical filter device comprises a lens base, a lens pressing seat and a polarized lens, wherein the lens base is fixed below the lighting device, and the polarized lens is arranged in the lens base and is fixed through the lens pressing seat. The polarized lens can filter out light which causes glare to the lens, so that the imaging of the lens is clear, the using effect is improved, and the lens base and the lens pressing seat mainly play roles of fixing and protecting the polarized lens.

Preferably, the lens base is provided with a lens placing groove, the lens placing groove and the lens pressing seat are provided with light holes, and the polarized lens is placed in the lens placing groove and is pressed and fixed through the lens pressing seat. The light holes formed in the lens placing grooves and the lens pressing seat can enable light to enter the camera after being filtered by the polarized lenses.

Preferably, the inner side of the lens base is further provided with an internal thread and a tool retracting groove, the tool retracting groove is arranged between the lens placing groove and the internal thread, the lens pressing seat is provided with an external thread, and the lens pressing seat is connected with the lens base through the internal thread and the external thread.

Preferably, one end of the lens base is a semicircular end, the other end of the lens base is a rectangular end, and the rectangular end is fixed on the bending part of the upper cover connecting plate. The semi-circular end is convenient for placing the polarized lens and the lens pressing seat, and the rectangular end is convenient for being connected with the bending part.

Preferably, a base plate is arranged between the camera and the side surface of the upper cover connecting plate, and is connected with the camera and is tightly attached to the upper cover connecting plate. The fixed backing plate in camera side can give the camera and go up and cover the certain buffering between the connecting plate, protects the camera not receive the damage.

Preferably, the lighting device comprises an annular light source, the annular light source is fixed below the upper cover connecting plate and surrounds the camera, and the inner diameter of the annular light source is not smaller than the outer diameter of the lens of the camera.

Preferably, slots are formed below the upper cover connecting plate and the shell, and the fixing piece penetrates through the two slots to fix the shell and the upper cover connecting plate; the fixing piece is sleeved with a gasket. The gasket can completely seal the slot holes to prevent the exposure of the gaps.

Preferably, the upper end of the fixing device is provided with an external wiring group device, the external wiring group device comprises an air plug connector and an air tap connector, and the air plug connector and the air tap connector are both in threaded connection with the upper end face of the fixing device.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the camera inside is protected from being interfered by external environment through the shell, the service time of the equipment is prolonged, and the use cost is reduced;

2. the utility model greatly improves the working environment of the vision system by adding the filtering device, improves the cutting precision, and greatly improves the use stability and the environment adaptability of the equipment.

3. According to the utility model, the user experience can be improved by adding the filtering device, and the actual cutting effect and action can be monitored under various working conditions.

4. The utility model adopts the integrated design of the upper cover and the connecting plate, can be uniformly installed in the protective shell after the external installation is finished, and has simple and convenient operation, convenient maintenance and high assembly precision.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a vision system for laser cutting according to the present utility model.

Fig. 2 is a schematic diagram of the internal structure of the vision system for laser cutting according to the present utility model.

Fig. 3 is a top view of a filter device in a vision system for laser cutting according to the present utility model.

Fig. 4 is a cross-sectional view at A-A in fig. 3.

Fig. 5 shows an installation mode of the vision system for laser cutting according to the present utility model.

Fig. 6 shows another installation mode of the vision system for laser cutting according to the present utility model.

Fig. 7 is an enlarged schematic view of the structure at B in fig. 6.

In the figure: 1. the visual system for laser cutting comprises 2, a laser head, 3, a shell, 4, an air channel nozzle, 5, an aviation plug, 6, a gasket, 7, an external line group device, 8, a fixing device, 9, a lighting device, 10, a light filtering device, 11, a visual device, 12, an upper cover connecting plate, 13, a camera, 14, an annular light source, 15, a base plate, 16, a lens base, 17, a tool withdrawal groove, 18, a lens placing groove, 19, a lens pressing seat, 20 and a polarized lens.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 1 to 7, in the present embodiment, the vision system 1 for laser cutting according to the present utility model includes a vision device 11 and a fixing device 8, the vision device 11 is disposed in the fixing device 8, the vision device 11 includes a camera 13, an illumination device 9 and a filter device 10 are further disposed in the fixing device 8, the illumination device 9 and the filter device 10 are sequentially disposed below the camera 13, and the camera 13, the illumination device 9 and the filter device 10 are coaxially disposed. The utility model can filter the reflected light of the plate and the light of the external light source through the light filtering device 10, thereby improving the use effect of the vision system, greatly improving the working environment of the vision system, monitoring the actual cutting effect and action under various working conditions, improving the cutting precision, and greatly improving the equipment use stability and the environment adaptability. Specifically, the fixing device 8 includes a housing 3 and an upper cover connecting plate 12 fixedly connected with the housing 3, the camera 13 is disposed above the upper cover connecting plate 12, the lighting device 9 is disposed below the upper cover connecting plate 12, a bending portion is disposed below the upper cover connecting plate 12, and the light filtering device 10 is fixed on the bending portion and located below the lighting device 9. The existence of the shell 3 protects the internal camera 13 from the external environment, increases the service time of the device and reduces the use cost. The upper cover connecting plate 12 and the lower part of the shell 3 are provided with slotted holes, the diameter of the slotted holes on the shell 3 is controlled within 3.5mm, and a fixing piece passes through the two slotted holes to fix the shell 3 and the upper cover connecting plate 12, wherein the fixing piece can be set as simple components such as a screw; the fixing piece is sleeved with a gasket 6, and the gasket 6 can completely seal the slotted holes to prevent the gaps from being exposed. The length of the housing 3 may be determined according to the total length of the camera 13 and the filter device 10, and the bottom of the housing 3 is required to be level or 1-3 mm higher than the lowest surface of the upper cover connecting plate 12. Meanwhile, the upper cover position of the upper cover connecting plate 12 is overlapped with the upper plane of the shell 3, and the upper cover connecting plate is connected by a screw.

As shown in fig. 2 to 4, the optical filter device 10 includes a lens base 16, a lens pressing seat 19 and a polarized lens 20, the lens base 19 is fixed below the lighting device 9, the polarized lens 20 is disposed in the lens base 16 and is fixed by the lens pressing seat 19, the polarized lens 20 can filter out light which causes glare to the lens, so that the imaging of the lens is clear, the use effect is improved, and the lens base 16 and the lens pressing seat 19 mainly play a role in fixing and protecting the polarized lens 20. Specifically, as shown in fig. 4, the lens base 16 is provided with a lens placement groove 18, the lens placement groove 18 and the lens pressing seat 19 are provided with light holes, the polarized lens 20 is placed in the lens placement groove 18 and is pressed and fixed by the lens pressing seat 19, and the light holes formed in the lens placement groove 18 and the lens pressing seat 19 can enable light to enter the camera 13 after being filtered by the polarized lens 20. Wherein, the connection mode between the lens base 16 and the lens pressing seat 19 is threaded connection, the inner side of the lens base 16 is also provided with an internal thread and a tool retracting groove 17, the tool retracting groove 17 is arranged between the lens placing groove 18 and the internal thread, the lens pressing seat 19 is provided with an external thread, and the lens pressing seat 19 and the lens base 16 are connected with the external thread through the internal thread. One end of the lens base 16 is provided with a semicircular end, the other end of the lens base 16 is provided with a rectangular end, and the rectangular end is fixed at the bending part of the upper cover connecting plate 12. The semicircular end is convenient for placing the polarized lens 20 and the lens pressing seat 19, and the rectangular end is convenient for being connected with the bending part.

It should be noted that the total thickness of the lens mount 16 needs to be strictly controlled, and the height of the polarized lens 20 from the lens of the camera 13 cannot exceed the diameter of the central hole of the lens placement groove 18 of the lens mount 16, so that the field of view is not blocked by the lens mount 16. The number of turns of the external thread provided on the lens pressing seat 19 cannot be less than 3, and at the same time, does not exceed 2/3 of the height of the whole lens pressing seat 19. The diameter of the light hole arranged in the center of the lens pressing seat 19 is the same as that of the light hole at the bottom of the lens base 16; the outer diameter of the lens pressing seat 19 is set according to the following data: is 2-4 mm larger than the through hole of the lens base 16 and is 1-2 mm smaller than the diameter of the circular groove of the lens placing groove 18 in the lens base 16. The height of the lens of the camera 13 from the plane of the plate is preferably controlled within 50-120 mm, the polarized lens 20 is circular, the diameter of the polarized lens 20 is smaller than the diameter of the lens placing groove 18 by 1-2 mm, the thickness of the polarized lens 20 exceeds the depth of the lens placing groove 18 by 0.5-2 mm, and the distance between the lens base 16 and the two sides of the shell 3 is not smaller than 2mm.

As shown in fig. 2, a pad 15 is disposed between the camera 13 and the side surface of the upper cover connecting plate 12, the pad 15 is connected with the camera 13, and the pad 15 is disposed closely to the upper cover connecting plate 12. The cushion plate 15 fixed on the side surface of the camera 13 can provide certain buffer between the camera 13 and the upper cover connecting plate 12 to protect the camera 13 from damage. The thickness of the pad 15 needs to be determined according to the position of the lens center of the camera 13.

As shown in fig. 2, the lighting device 9 includes an annular light source 14, the annular light source 14 is fixed below the upper cover connecting plate 12 and is disposed around the camera 13, and an inner diameter of the annular light source 14 is not smaller than an outer diameter of a lens of the camera 13. The lighting device 9 has further requirements on the position of the lens, and the installation space of the annular light source 14 is reserved between the lens of the camera 13 and the upper cover connecting plate 12 by about 3-5 mm.

As shown in fig. 1 to 2, an external connection wire set device 7 is disposed at the upper end of the fixing device, and the external connection wire set device 7 includes an air plug connector 5 and an air tap connector 4, where the air plug connector 5 and the air tap connector 4 are both screwed on the upper end surface of the fixing device. It should be noted that the installation clearance before the joint is strictly controlled during installation, the diameter of the nut clamped and fixed at the lower part of the avionics joint 5 is larger, and a space for rotation is reserved, so that the nuts do not interfere when being screwed with each other. Meanwhile, the upper part of the air tap connector 4 is wider, so that the installation and the use of the female connector of the aviation plug connector 5 cannot be influenced, and a proper position needs to be found, so that enough space is reserved.

In practical application, as shown in fig. 5, one mounting manner of the vision system 1 for laser cutting is that the vision system 1 for laser cutting is provided on one side of the laser head 2.

As shown in fig. 6 to 7, in another installation mode of the vision system 1 for laser cutting, the vision system 1 for laser cutting is installed at a corner surrounded by a laser cutting machine, and the actual cutting process and quality are monitored, at this time, the light mainly filtered by the vision system 1 for laser cutting is intense light generated in the cutting process, and when the light passes through the filtering device 10, the light affecting the camera 13 can be filtered, so that the monitoring of the cutting process is clearer and more accurate. It is noted that the installation of the device in a large surrounding corner requires the camera 13 to be mounted at 45 ° to the plane of the sheet material, the laser head axis, and the angle of the polarized lens 20 in the filter device 10 is adjustable.

As shown in fig. 1 to 7, the working principle of the vision system for laser cutting is:

the polarized lens 20 is placed in the lens placing groove 18, the polarized angle of the polarized lens 20 is adjusted, the polarized lens 20 is screwed into the lens pressing seat 19 and is tightly pressed, then the upper cover connecting plate 12 is integrally fixed inside the shell 3, the device is placed in a working position, necessary circuits and pipelines are connected on the external line group device 7, the annular light source 14 is opened, light irradiates on a plate through the polarized lens 20, light reflected by the plate and light from other sources enter the lens through the polarized lens 20, light is filtered when the light passes through the polarized lens 20, and the polarized lens 20 can filter out light causing glare to the lens, so that imaging of the lens of the camera 13 is clear, and the using effect is improved.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the camera 13 inside is protected from the interference of external environment by the shell 3, the service time of the equipment is prolonged, and the use cost is reduced;

2. the utility model greatly improves the working environment of the vision system by adding the filter device 10, improves the cutting precision, and greatly improves the use stability and the environment adaptability of the equipment.

3. The utility model can improve the user experience by adding the filtering device 10, and can monitor the actual cutting effect and action under various working conditions.

4. The utility model adopts the integrated design of the upper cover connecting plate 12, can be uniformly installed in the shell 3 after the external installation is finished, and has simple and convenient operation, convenient maintenance and high assembly precision.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a vision system for laser cutting, includes vision device and fixing device, vision device set up in the fixing device, its characterized in that, vision device includes the camera, still be provided with lighting device and filter equipment in the fixing device, just lighting device with filter equipment set gradually in the below of camera, the camera lighting device with filter equipment is coaxial to be set up.

2. The vision system for laser cutting according to claim 1, wherein the fixing device comprises a housing and an upper cover connecting plate fixedly connected with the housing, the camera is arranged above the upper cover connecting plate, the lighting device is oppositely arranged below the upper cover connecting plate, a bending part is arranged below the upper cover connecting plate, and the light filtering device is fixed on the bending part and is positioned below the lighting device.

3. The vision system for laser cutting according to claim 2, wherein the optical filter device comprises a lens base, a lens pressing seat and a polarized lens, the lens base is fixed below the illumination device, and the polarized lens is placed in the lens base and fixed through the lens pressing seat.

4. The vision system for laser cutting according to claim 3, wherein the lens base is provided with a lens placing groove, the lens placing groove and the lens pressing seat are both provided with light holes, and the polarized lens is placed in the lens placing groove and is pressed and fixed by the lens pressing seat.

5. The vision system for laser cutting of claim 4, wherein the inner side of the lens base is further provided with an internal thread and a relief groove, the relief groove is disposed between the lens placement groove and the internal thread, the lens pressing seat is provided with an external thread, and the lens pressing seat and the lens base are connected with the external thread through the internal thread.

6. A vision system for laser cutting according to claim 3, wherein one end of the lens base is provided as a semicircular end, and the other end of the lens base is provided as a rectangular end, the rectangular end being fixed to the bent portion of the upper cover connecting plate.

7. The vision system for laser cutting according to claim 2, wherein a pad is provided between the camera and a side surface of the upper cover connection plate, the pad is connected to the camera and the pad is disposed closely to the upper cover connection plate.

8. The vision system for laser cutting according to claim 2, wherein the lighting device comprises an annular light source which is fixed below the upper cover connecting plate and is disposed around the camera, and an inner diameter of the annular light source is not smaller than an outer diameter of a lens of the camera.

9. The vision system for laser cutting according to claim 2, wherein slots are formed below the upper cover connecting plate and the housing, and a fixing member passes through the two slots to fix the housing and the upper cover connecting plate; the fixing piece is sleeved with a gasket.

10. The vision system for laser cutting according to claim 1, wherein an external wiring assembly device is arranged at the upper end of the fixing device, the external wiring assembly device comprises an air plug connector and an air tap connector, and the air plug connector and the air tap connector are both in threaded connection with the upper end face of the fixing device.