Protective mechanism and laser cutting machine

Abstract

The utility model discloses a protection mechanism and a laser cutting machine, the protection mechanism comprises a protection piece and a heat dissipation piece, a protection cavity is arranged in the protection piece, the two ends of the protection piece are open, the protection piece is connected with the heat dissipation piece, and when a laser cutting head is arranged in the protection cavity of the protection piece, the heat dissipation piece can dissipate heat generated by the laser cutting head. The problems that in the prior art, when a to-be-cut product is cut by a laser cutting machine, generated sundries splash, a laser cutting head is prone to being damaged, and the laser cutting head is prone to deformation due to the too high temperature are solved.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine technology, specifically to a protective mechanism and a laser cutting machine. Background Technology

[0002] A laser cutting machine is a device that uses a laser beam for cutting, and it is widely used in the processing of both metallic and non-metallic materials. The laser emitted by the laser is focused into a high-power-density laser beam through an optical path system, irradiating the surface of the workpiece and causing the material to melt or vaporize rapidly. Simultaneously, high-pressure gas blows away the molten or vaporized material, forming a kerf. As the laser beam moves relative to the workpiece, the cutting process is completed.

[0003] In existing technologies, laser welding of steel-plastic composite pipes is a composite pipe welding technology that combines the properties of steel and plastic. Steel-plastic composite pipes consist of inner and outer plastic layers (such as PE or PP) and an intermediate steel strip. The welding head is equipped with a focusing lens. The pipe to be welded is fixed, ensuring the joints are aligned. The laser beam heats the welding area, melting the steel layer and forming a weld. However, during production, the laser cutting head of the laser cutting machine lacks a protective mechanism. When the laser cutting head cuts an object, the high-temperature debris splashes can easily damage the laser cutting head. Furthermore, the laser cutting head operates at a high temperature; if it is not cooled down, the excessively high temperature can cause deformation, affecting the laser focusing effect and cutting quality. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a protective mechanism and a laser cutting machine to solve the problems in the prior art where debris splashing during laser cutting of products can easily damage the laser cutting head, and the laser cutting head is prone to deformation due to excessive temperature.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a protective mechanism for welding steel strips in steel-plastic composite pipes. The protective mechanism includes a protective component and a heat dissipation component. The protective component has a protective cavity and openings at both ends. A laser cutting head can extend into the protective cavity through one opening and emit a laser beam that can pass through the other opening and act on the steel strip. The protective component is connected to the heat dissipation component. When the laser cutting head is placed in the protective cavity of the protective component, the heat dissipation component can dissipate the heat generated by the laser cutting head.

[0007] In some embodiments, the protective component includes a sleeve with a protective cavity inside and openings at both ends. One end of the sleeve is provided with a flange, and a connection hole is provided on the flange.

[0008] In some embodiments, the side wall of the sleeve has at least one perforation communicating with the protective cavity.

[0009] In some embodiments, the protective member further includes a plurality of first fins, which are spaced apart on the periphery of the sleeve.

[0010] In some embodiments, the other end of the sleeve is connected to the heat sink, and the heat sink has a through hole corresponding to the opening of the protective cavity.

[0011] In some embodiments, the heat sink includes a baffle plate and a plurality of second fins. The baffle plate is connected to the other end of the sleeve. The baffle plate has through holes corresponding to the opening of the protective cavity. The plurality of second fins are fixedly disposed on the baffle plate at intervals.

[0012] In some embodiments, the baffle plate is further provided with a fluid flow channel, and the side wall of the baffle plate is provided with an inlet pipe and an outlet pipe communicating with the fluid flow channel.

[0013] In some embodiments, the fluid flow channel includes two bends and a conduit, the conduit being connected between the two bends, and the through hole being located between the two bends.

[0014] In some embodiments, both bends are continuous S-shaped bends.

[0015] This utility model also provides a laser cutting machine, wherein one end of the sleeve is connected to the laser cutting machine, and the laser cutting head of the laser cutting machine is located inside the protective cavity.

[0016] Compared with the prior art, the protective mechanism and laser cutting machine provided by this utility model have a protective cavity inside the protective component with openings at both ends. The protective component is connected to a heat dissipation component. When the laser cutting head is placed in the protective cavity of the protective component, the protective component can protect and shield the laser cutting head, avoiding damage to the laser cutting head by flying debris as much as possible. At the same time, the heat dissipation component can dissipate the heat generated by the laser cutting head, effectively ensuring that the laser cutting head operates normally at an appropriate temperature. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a protective mechanism provided in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the shielding plate provided in this embodiment of the utility model;

[0019] Figure 3 This is a diagram showing the usage status of a protective mechanism provided in an embodiment of this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] To address the technical problems in existing laser cutting machines where debris splashing during cutting can easily damage the laser cutting head, and where excessive heat can cause deformation of the laser cutting head, this invention provides a protective mechanism and a laser cutting machine that can protect the laser cutting head and simultaneously dissipate heat to maintain it at an appropriate operating temperature.

[0022] Please see Figures 1-3 , Figures 1-3 This invention provides a protective mechanism for welding steel strips in a steel-plastic composite pipe. The protective mechanism 1 includes a protective component 11 and a heat dissipation component 12. The protective component 11 has a protective cavity and openings at both ends. A laser cutting head can extend into the protective cavity through one opening and emit a laser beam that passes through the other opening and acts on the steel strip. The protective component 11 is connected to the heat dissipation component 12. When the laser cutting head is placed in the protective cavity of the protective component 11, the heat dissipation component 12 can dissipate the heat generated by the laser cutting head.

[0023] In practical use, by connecting the protective component 11 to the laser cutting machine, and allowing the laser cutting head to extend into the protective cavity through an opening at one end, the laser beam emitted by the laser cutting head can pass through the opening at the other end of the protective cavity to cut the object. At the same time, the heat sink 12 can dissipate the heat generated by the laser cutting head during operation, ensuring that the laser cutting head operates at an appropriate temperature.

[0024] In one embodiment, the protective component 11 includes a sleeve 111, which has a protective cavity and openings at both ends. One end of the sleeve 111 is provided with a flange 110, and the flange 110 is provided with a connecting hole. Specifically, it can be connected to a laser cutting machine by means of a bolt inserted into the connecting hole.

[0025] Based on the above scheme, in order to improve the air flow rate inside the sleeve 111, specifically, the side wall of the sleeve 111 is provided with at least one perforation 11a communicating with the protective cavity, and the heat generated when the laser cutting head is working can be dissipated through the perforation 11a.

[0026] Based on the above solution, in order to further improve the heat dissipation effect, the protective component 11 further includes a plurality of first fins 112, which are spaced apart on the periphery of the sleeve 111.

[0027] In some embodiments, the other end of the sleeve 111 is connected to the heat sink 12, and the heat sink 12 has a through hole 120 corresponding to the opening of the protective cavity. Specifically, the heat sink 12 includes a baffle plate 121 and a plurality of second fins 122. The baffle plate 121 is connected to the other end of the sleeve 111. The baffle plate 121 is arranged perpendicular to the axis of the sleeve 111 to laterally expand the protective shielding surface and provide a larger heat dissipation surface. The baffle plate 121 has a through hole 120 corresponding to the opening of the protective cavity, and the plurality of second fins 122 are fixedly spaced on the baffle plate 121.

[0028] Based on the above scheme, the baffle plate 121 is also provided with a fluid flow channel, and the side wall of the baffle plate 121 is provided with an inlet pipe and an outlet pipe that communicate with the fluid flow channel. In use, the inlet pipe and the outlet pipe can be connected to the water storage tank through the pump body, and the pump body will transport the liquid in the water storage tank to the fluid flow channel, which can further improve the heat dissipation effect.

[0029] In some embodiments, the fluid flow channel includes two bends 123 and a conduit 124, the conduit 124 being connected between the two bends 123, and the through hole 120 being located between the two bends 123, wherein both bends 123 are continuous S-shaped bends.

[0030] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A safeguard mechanism, characterized by, The application discloses a protection mechanism for steel strip welding of a steel-plastic composite pipe, which comprises a protection piece and a heat dissipation piece.

2. A guard mechanism according to claim 1, wherein, The protection piece comprises a sleeve, and the sleeve is internally provided with a protection cavity and is open at both ends.

3. A guard mechanism according to claim 2, wherein, At least one through hole is formed in the side wall of the sleeve and is communicated with the protection cavity.

4. A guard mechanism according to claim 3, wherein, The protection piece further comprises a plurality of first fins, and the first fins are arranged at intervals on the circumferential side of the sleeve.

5. A guard mechanism according to claim 4, wherein, The other end of the sleeve is connected with the heat dissipation piece, and a through hole is formed in the heat dissipation piece and corresponds to the opening of the protection cavity.

6. A guard mechanism according to claim 5, wherein, The heat dissipation piece comprises a shielding plate and a plurality of second fins.

7. A guard mechanism according to claim 6, wherein, The shielding plate is connected with the other end of the sleeve, and a through hole is formed in the shielding plate and corresponds to the opening of the protection cavity.

8. A guard mechanism according to claim 7, wherein, The second fins are fixedly arranged on the shielding plate at intervals.

9. A guard mechanism according to claim 8, wherein, The shielding plate is further provided with a fluid flow channel, and the side wall of the shielding plate is provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the fluid flow channel.

10. A laser cutting machine characterized in that, The fluid flow channel comprises two elbow pipes and a guide pipe. The through hole is located between the two elbow pipes. The two elbow pipes are continuous S-shaped elbow pipes. The sleeve is connected with the laser cutting machine, and the laser cutting head of the laser cutting machine is located in the protection cavity.

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