Cutting head closed light path telescopic air pressure balancing device

Abstract

The utility model discloses a cutting head closed light path telescopic air pressure balancing device which comprises an upper light beam barrel, a bidirectional vacuum filter is installed on the outer side of the upper light beam barrel, an upper protective mirror is installed on the top of the upper light beam barrel, a collimating mirror is arranged at the bottom of the upper protective mirror, and a middle light beam barrel is fixedly arranged at the bottom of the upper light beam barrel. A lower light beam barrel is fixedly installed at the end of the middle light beam barrel, a lead screw integrated motor is arranged on the outer side of the lower light beam barrel, a protection lens base is arranged on one side of the lead screw integrated motor, and a focus lens and a lower protection lens are installed in the protection lens base. According to the cutting head closed light path telescopic air pressure balancing device, the protective lens base is made to move up and down through the lead screw integrated motor, a sealing ring is installed on a focusing lens barrel on the upper portion of the protective lens base, and the light path sealing performance is guaranteed; the up-and-down moving resistance of the front end is reduced through the bidirectional vacuum filter, and the responsivity of the follow-up shaft is improved; and the cutting nozzle is prevented from colliding with the plate.

Description

Technical Field

[0001] This utility model relates to the field of three-dimensional five-axis cutting heads, specifically a cutting head sealed optical path telescopic air pressure balance device. Background Technology

[0002] The 3D five-axis cutting head is the core component of the 3D five-axis laser cutting machine. The front end of the 3D five-axis cutting head has a follower component to deal with sudden protrusions when cutting curved surfaces and to prevent the cutting nozzle from hitting the plate. The beam tube is sealed to the outside through two protective mirrors.

[0003] To reduce lens contamination; the up-and-down movement of the follower end compresses the air inside the beam tube, which increases the movement resistance and reduces the responsiveness of the follower shaft; it also makes the nozzle prone to hitting the plate. Utility Model Content

[0004] The purpose of this invention is to provide a closed optical path telescopic air pressure balancing device for a cutting head, so as to solve the defects mentioned in the background art.

[0005] To achieve the above objectives, a closed optical path telescopic air pressure balancing device for a cutting head is provided, comprising an upper beam tube, a bidirectional vacuum filter installed on the outside of the upper beam tube, an upper protective mirror installed on the top of the upper beam tube, a collimating mirror installed at the bottom of the upper protective mirror, a middle beam tube fixedly installed at the bottom of the upper beam tube, a lower beam tube fixedly installed at the end of the middle beam tube, a lead screw integrated motor installed on the outside of the lower beam tube, a protective mirror mount installed on one side of the lead screw integrated motor, a focusing mirror and a lower protective mirror installed inside the protective mirror mount, a focusing mirror tube installed above the focusing mirror, and a sealing ring installed on the outside of the focusing mirror tube.

[0006] Preferably, the included angle between the upper beam tube and the middle beam tube is 90°, and an AO mirror is installed inside the docking position between the upper beam tube and the middle beam tube, with the AO mirror tilted at 45°.

[0007] Preferably, the included angle between the middle beam tube and the lower beam tube is 90°, and an upper reflector is installed at the docking position between the middle beam tube and the lower beam tube, with the upper reflector tilted at 45°; the upper reflector and the AO mirror are arranged in parallel.

[0008] Preferably, the focusing lens and the lower protective lens are arranged in parallel, and the focusing lens and the lower protective lens are located inside the lower beam tube. The upper beam tube, the middle beam tube and the lower beam tube are combined together in a "Z" shape.

[0009] Preferably, a drive seat is fixedly provided on the outer side of the protective lens mount, and the lead screw of the lead screw integrated motor is screwed into the inside of the drive seat. The protective lens mount is raised and lowered along the axial position of the lower beam tube by the lead screw integrated motor.

[0010] Preferably, the focusing lens includes a fixing ring, a splicing seat, a docking groove, a docking seat, a cylindrical positioning seat, a heat dissipation area, and heat dissipation fins. A fixing ring is fixedly installed on the outer circumference of the focusing lens. Five sets of splicing seats are evenly arranged on the outer circumference of the fixing ring. The fixing ring is positioned inside the docking seat. A cylindrical positioning seat is fixedly installed at the bottom of the docking seat. Five sets of docking grooves are evenly opened on the inner circumference of the docking seat.

[0011] Preferably, the dimensions of the splicing seat and the docking groove are compatible, the splicing seat is inserted into the docking groove, and the bottom of the cylinder positioning seat is provided with a heat dissipation area, and multiple sets of heat dissipation fins are evenly arranged inside the heat dissipation area.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a lead screw integrated motor to move the protective lens mount up and down. The upper part of the protective lens mount has a focusing lens tube with a sealing ring installed to ensure the optical path is sealed. The bidirectional vacuum filter reduces the resistance of the front end moving up and down, improving the responsiveness of the follower shaft and avoiding the phenomenon of the cutting nozzle hitting the plate.

[0014] 2. In this invention, the heat generated by the focusing lens during operation is conducted to a large number of heat dissipation fins through the fixing ring and the cylindrical positioning seat. The presence of heat dissipation fins greatly increases the heat dissipation area of ​​the focusing lens. According to the principle of heat transfer, the larger the heat dissipation area, the faster the heat is dissipated. A large number of heat dissipation fins can greatly increase the contact area between the focusing lens and the surrounding air or other cooling media, thereby effectively transferring the heat generated inside the focusing lens to the external environment and preventing the lens from being damaged due to overheating. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Optical path diagram;

[0017] Figure 3 This is a schematic diagram of the focusing lens and its mounting structure of the present invention;

[0018] Figure 4 for Figure 3 A sectional view;

[0019] Figure 5 for Figure 3 A bottom view.

[0020] The following are the labeling elements in the diagram: 1. Upper protective mirror; 2. Collimating mirror; 3. Two-way vacuum filter; 4. Upper reflecting mirror; 5. Integrated lead screw motor; 6. Focusing lens tube; 7. Sealing ring; 8. Focusing lens; 81. Fixing ring; 82. Splicing base; 83. Docking groove; 84. Docking base; 85. Tube positioning base; 86. Heat dissipation area; 87. Heat dissipation fins; 9. Lower protective mirror; 10. Protective mirror base; 11. AO mirror; 12. Upper beam tube; 13. Middle beam tube; 14. Lower beam tube. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a closed optical path telescopic air pressure balancing device for a cutting head, including an upper beam tube 12, a bidirectional vacuum filter 3 installed on the outside of the upper beam tube 12, an upper protective mirror 1 installed on the top of the upper beam tube 12, a collimating mirror 2 installed at the bottom of the upper protective mirror 1, a middle beam tube 13 fixedly installed at the bottom of the upper beam tube 12, a lower beam tube 14 fixedly installed at the end of the middle beam tube 13, a lead screw integrated motor 5 installed on the outside of the lower beam tube 14, a protective mirror seat 10 installed on one side of the lead screw integrated motor 5, a focusing mirror 8 and a lower protective mirror 9 respectively installed inside the protective mirror seat 10, a focusing mirror tube 6 installed above the focusing mirror 8, and a sealing ring 7 installed on the outside of the focusing mirror tube 6.

[0023] Working principle: When the external switch of the lead screw integrated motor 5 is activated, the lead screw on the lead screw integrated motor 5 rotates, and the drive seat on the outside of the protective lens mount 10 moves up and down, driving the protective lens mount 10 to move up and down along the axial position of the lower beam tube 14. The protective lens mount 10 is sleeved on the outside of the lower beam tube 14, which can limit and guide it during the lifting and lowering. The lead screw integrated motor 5 causes the protective lens mount 10 to move up and down. A focusing lens tube 6 is installed on the upper part of the protective lens mount 10, and a sealing ring 7 is installed to ensure the optical path sealing. The bidirectional vacuum filter 3 reduces the resistance of the front end to the up and down movement, improves the responsiveness of the follower shaft, and avoids the phenomenon of the cutting nozzle hitting the plate.

[0024] In a preferred embodiment, the included angle between the upper beam tube 12 and the middle beam tube 13 is 90°, and an AO mirror 11 is installed inside the docking position between the upper beam tube 12 and the middle beam tube 13, with the AO mirror 11 tilted at 45°.

[0025] In a preferred embodiment, the included angle between the middle beam tube 13 and the lower beam tube 14 is 90°, and an upper reflector 4 is installed at the docking position between the middle beam tube 13 and the lower beam tube 14. The upper reflector 4 is tilted at 45°. The upper reflector 4 and the AO mirror 11 are arranged in parallel.

[0026] In a preferred embodiment, the focusing lens 8 and the lower protective lens 9 are arranged in parallel and are located inside the lower beam tube 14. The upper beam tube 12, the middle beam tube 13 and the lower beam tube 14 are combined together in a "Z" shape.

[0027] In a preferred embodiment, a drive seat is fixedly provided on the outer side of the protective lens mount 10, and the lead screw on the lead screw integrated motor 5 is screwed into the inside of the drive seat. The protective lens mount 10 is raised and lowered along the axial position of the lower beam tube 14 by the lead screw integrated motor 5.

[0028] In a preferred embodiment, the focusing lens 8 includes a fixing ring 81, a splicing seat 82, a docking groove 83, a docking seat 84, a cylindrical positioning seat 85, a heat dissipation area 86, and heat dissipation fins 87. The fixing ring 81 is fixedly installed on the outer circumference of the focusing lens 8. Five sets of splicing seats 82 are evenly arranged on the outer circumference of the fixing ring 81. The fixing ring 81 is positioned inside the docking seat 84. A cylindrical positioning seat 85 is fixedly installed at the bottom of the docking seat 84. Five sets of docking grooves 83 are evenly opened on the inner circumference of the docking seat 84.

[0029] As a preferred implementation, the splicing base 82 and the docking groove 83 are matched in size, the splicing base 82 is inserted into the docking groove 83, and the bottom of the cylinder positioning base 85 is provided with a heat dissipation area 86, and multiple sets of heat dissipation fins 87 are evenly arranged inside the heat dissipation area 86.

[0030] like Figure 3-5As shown: When the focusing lens 8 needs to be quickly replaced, first remove the cylindrical positioning seat 85 from the device. Holding the focusing lens 8, simply detach the splicing seat 82 from the docking groove 83. The docking groove 83 and the splicing seat 82 allow for quick and accurate positioning and installation of the focusing lens 8. When the focusing lens 8 is working, the heat generated is conducted through the fixing ring 81 and the cylindrical positioning seat 85 to a large number of heat dissipation fins 87. The presence of heat dissipation fins 87 greatly increases the heat dissipation area of ​​the focusing lens 8. According to the principle of heat transfer, the larger the heat dissipation area, the faster the heat is dissipated. The large number of heat dissipation fins... The heat sink 87 can significantly increase the contact area between the focusing lens 8 and the surrounding air or other cooling medium, thereby effectively transferring the heat generated inside the focusing lens 8 to the external environment and preventing the lens from being damaged due to overheating. The heat sink 87 is usually made of materials with good thermal conductivity, such as aluminum alloy. These materials can quickly conduct the heat generated by the focusing lens 8 to the surface of the fins, and then dissipate the heat through convection, radiation and other means. Compared with the case without heat sink 87, the heat sink 87 can significantly improve the heat dissipation efficiency, keep the focusing lens 8 at a lower temperature during operation, and thus ensure the stability of its optical and mechanical properties.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A closed optical path telescopic air pressure balancing device for a cutting head, comprising an upper beam tube (12), characterized in that: A bidirectional vacuum filter (3) is installed on the outside of the upper beam tube (12). An upper protective mirror (1) is installed on the top of the upper beam tube (12). A collimating mirror (2) is installed at the bottom of the upper protective mirror (1). A middle beam tube (13) is fixedly installed at the bottom of the upper beam tube (12). A lower beam tube (14) is fixedly installed at the end of the middle beam tube (13). A lead screw motor (5) is installed on the outside of the lower beam tube (14). A protective mirror seat (10) is installed on one side of the lead screw motor (5). A focusing mirror (8) and a lower protective mirror (9) are installed inside the protective mirror seat (10). A focusing mirror tube (6) is installed above the focusing mirror (8). A sealing ring (7) is installed on the outside of the focusing mirror tube (6).

2. The air pressure balancing device for a sealed optical path of a cutting head according to claim 1, characterized in that: The included angle between the upper beam tube (12) and the middle beam tube (13) is 90°, and an AO mirror (11) is installed inside the docking position between the upper beam tube (12) and the middle beam tube (13), with the AO mirror (11) tilted at 45°.

3. The air pressure balancing device for a sealed optical path of a cutting head according to claim 2, characterized in that: The included angle between the middle beam tube (13) and the lower beam tube (14) is 90°, and an upper reflector (4) is installed at the docking position between the middle beam tube (13) and the lower beam tube (14). The upper reflector (4) is set at an angle of 45°. The upper reflector (4) and the AO mirror (11) are set in parallel.

4. The air pressure balancing device for a sealed optical path of a cutting head according to claim 1, characterized in that: The focusing lens (8) and the lower protective lens (9) are arranged in parallel. The focusing lens (8) and the lower protective lens (9) are located inside the lower beam tube (14). The upper beam tube (12), the middle beam tube (13) and the lower beam tube (14) are combined together in a "Z" shape.

5. The air pressure balancing device for a sealed optical path of a cutting head according to claim 1, characterized in that: A drive seat is fixedly installed on the outside of the protective mirror base (10), and the lead screw on the lead screw integrated motor (5) is screwed into the inside of the drive seat. The protective mirror base (10) is raised and lowered along the axial position of the lower beam tube (14) by the lead screw integrated motor (5).

6. The air pressure balancing device for a sealed optical path of a cutting head according to claim 1, characterized in that: The focusing lens (8) includes a fixing ring (81), a splicing seat (82), a docking groove (83), a docking seat (84), a cylindrical positioning seat (85), a heat dissipation area (86), and heat dissipation fins (87). The fixing ring (81) is fixedly installed on the outer circumference of the focusing lens (8). Five sets of splicing seats (82) are evenly arranged on the outer circumference of the fixing ring (81). The fixing ring (81) is positioned inside the docking seat (84). A cylindrical positioning seat (85) is fixedly arranged at the bottom of the docking seat (84). Five sets of docking grooves (83) are evenly opened on the inner circumference of the docking seat (84).

7. The air pressure balancing device for a sealed optical path of a cutting head according to claim 6, characterized in that: The dimensions of the splicing seat (82) and the docking groove (83) are compatible. The splicing seat (82) is inserted into the docking groove (83). At the same time, a heat dissipation area (86) is opened at the bottom of the cylinder positioning seat (85). Multiple sets of heat dissipation fins (87) are evenly arranged inside the heat dissipation area (86).

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