Cooling control system for three-dimensional laser cutting machine

Abstract

The application discloses a three-dimensional laser cutting machine cooling control system, which comprises a cooling module, the cooling module comprises a water cooler and a cooling assembly sleeved on the surface of a laser head, the cooling assembly comprises a shell and a mixed flow element, a mixing cavity is arranged in the shell, the mixing cavity gradually decreases from one end of the shell to the other end, a monitoring module and a central control module are arranged. The real-time monitoring of the cooling assembly is realized by the monitoring module, the flow rate or the temperature of the cooling liquid supplied by the water cooler is adjusted, and the laser cutting head is ensured to be in a specific temperature state. Because the sizes of the two liquid inlet cavities are different, the cooling liquid entering from the bottom enters the liquid outlet cavity more quickly and mixes with the cooling liquid entering from the top, the temperature increase of the cooling liquid in the liquid outlet cavity is avoided, the cooling effect on the laser cutting head is reduced, the circumferential cooling of the laser cutting head has no dead angle, the uniformity of the cooling of the laser cutting head is better, and the service life of the laser cutting head is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting equipment technology, and in particular relates to a cooling control system for a three-dimensional laser cutting machine. Background Technology

[0002] A 3D laser cutting machine is a specialized device for high-precision cutting in three-dimensional space. Its main principle is to concentrate laser energy into a high-density beam, which is then transmitted to the work surface, generating sufficient energy to melt or vaporize the material, achieving cutting and engraving. 3D laser cutting machines operate the laser beam in multiple dimensions, enabling them to handle complex shapes and intricate cutting tasks.

[0003] However, the higher the power of the laser cutting machine, the more severe the heat generation of the laser cutting head and laser generator. Existing cooling components have poor cooling effects, and some parts are not cooled properly, which reduces the service life and is not conducive to the long-term smooth operation of high-power laser cutting heads. Summary of the Invention

[0004] This invention addresses the problem of poor cooling performance and inadequate cooling in certain areas of existing cooling components by proposing the following technical solution:

[0005] The cooling control system for a 3D laser cutting machine includes:

[0006] The cooling module includes a chiller and a cooling assembly fitted onto the surface of the laser head. The cooling assembly includes a housing and a mixing element. The housing has a mixing chamber that gradually decreases in size from one end to the other. The mixing chamber includes an outlet chamber with an outlet and two inlet chambers with inlets. The outlet chamber is located in the middle of the two inlet chambers. The chiller is connected to the outlet or inlet via a pipeline. The chiller injects coolant into the inlet chamber through the pipeline. While being mixed by the mixing element, the coolant in the inlet chambers is guided into the outlet chamber. The coolant is then discharged from the outlet, completing the cooling and temperature reduction of the laser head.

[0007] The monitoring module includes multiple sensors located inside the cooling components and pipes, and the sensors use the temperature information of the coolant inside the cooling components and pipes.

[0008] The central control module is used to receive and judge the information transmitted by the monitoring module. The central control module has a data range for coolant temperature information. The central control module provides electrical signals to the chiller to increase or decrease the coolant flow rate and temperature.

[0009] As a preferred embodiment of the above technical solution, the mixing component includes a power unit and multiple circumferentially arranged rotating rods. Both ends of the rotating rods extend through the liquid outlet chamber into two liquid inlet chambers, and multiple annular blades are symmetrically arranged at both ends of the rotating rods. The power unit drives the multiple rotating rods to rotate simultaneously, and the multiple annular blades rotate accordingly to mix the coolant in the liquid inlet chambers and inject it into the liquid outlet chambers.

[0010] As a preferred embodiment of the above technical solution, the power unit includes a first conical gear ring, on the outer side of which a plurality of first conical gears are meshed and connected, and the plurality of first conical gears are fixedly connected to the middle of the corresponding rotating rod.

[0011] As a preferred embodiment of the above technical solution, the power unit further includes a drive motor and a drive bevel gear connected to the drive motor, wherein the drive bevel gear meshes with one of the first bevel gears.

[0012] As a preferred embodiment of the above technical solution, the mixing component further includes a diffuser section, which includes three rotating plates. Multiple diffuser plates are arranged circumferentially in the middle of the rotating plates. One of the rotating plates is fixedly connected to a corresponding conical gear ring. The outer sides of the remaining rotating plates are provided with second conical gear rings. A second conical gear is meshed with one side of the second conical gear ring. Two second conical gears are fixedly connected to both ends of one of the rotating rods.

[0013] As a preferred embodiment of the above technical solution, the diameters of the three rotating plates decrease sequentially, and the rotating plates are matched with the corresponding conical gear rings.

[0014] As a preferred embodiment of the above technical solution, the rotating rod is inclined and the rotating rod and the first bevel gear on its surface are coaxial.

[0015] As a preferred embodiment of the above technical solution, the housing consists of an inner shell and two outer shells, which are fixedly connected.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. By using a monitoring module to monitor the cooling components in real time, the flow rate or temperature of the coolant supplied by the chiller is adjusted to ensure that the laser cutting head is at a specific temperature. The coolant enters from the inlet chambers at both ends, is mixed by the mixing element, and then enters the outlet chamber to complete the cooling of the laser cutting head. At the same time, because the two inlet chambers are different sizes, the coolant entering from the bottom enters the outlet chamber more quickly and mixes with the coolant entering from the top. This prevents the coolant temperature from increasing too quickly in the outlet chamber, which would reduce the cooling effect on the laser cutting head. This ensures that the circumferential cooling of the laser cutting head is thorough and without dead zones, resulting in better cooling uniformity and extending the service life of the laser cutting head.

[0018] 2. By using the power unit to drive multiple rotating rods to rotate simultaneously, the coolant can be introduced into the outlet chamber while the flow rate of the coolant is accelerated, causing the two streams of coolant to mix rapidly in the outlet chamber, making the coolant in a turbulent state and increasing the heat exchange effect.

[0019] 3. The diffuser section is powered by the power unit, which can mix and stir the coolant in the inlet or outlet chamber, so that the temperature inside the inlet or outlet chamber tends to be uniform, thereby avoiding insufficient cooling in some parts of the laser cutting head. Attached Figure Description

[0020] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment;

[0021] Figure 2 The image shown is a front view of the cooling assembly in the embodiment;

[0022] Figure 3 The diagram shown is an internal structural diagram of the housing in the embodiment;

[0023] Figure 4 The diagram shown is a schematic representation of the various parts of the power unit in the embodiment;

[0024] Figure 5 The image shown is a front sectional view of the cooling assembly in the embodiment.

[0025] In the diagram: 10. Shell; 11. Inner shell; 12. Outer shell; 13. Liquid outlet chamber; 14. Liquid outlet; 15. Liquid inlet chamber; 16. Liquid inlet; 21. Rotating rod; 22. Annular blade; 23. Power unit; 231. First bevel gear ring; 232. First bevel gear; 233. Drive motor; 234. Active bevel gear; 24. Diffusion unit; 241. Rotating plate; 242. Diffusion plate; 243. Second bevel gear ring; 244. Second bevel gear. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings.

[0027] Example

[0028] Figures 1-3 The cooling control system of the three-dimensional laser cutting machine includes:

[0029] The cooling module includes a chiller and a cooling assembly fitted onto the surface of the laser head. The cooling assembly includes a housing 10 and a mixing element. The housing 10 has a mixing chamber inside, which gradually decreases in size from one end to the other. The mixing chamber includes an outlet chamber 13 with an outlet 14 and two inlet chambers 15 with inlets 16. The outlet chamber 13 is located in the middle of the two inlet chambers 15. The chiller is connected to the outlet 14 or the inlet 16 through a pipeline. The chiller injects coolant into the inlet chamber 15 through the pipeline. While being mixed by the mixing element, the coolant in the inlet chambers 15 is introduced into the outlet chamber 13. After the coolant is discharged from the outlet 14, the cooling of the laser head is completed.

[0030] The monitoring module includes multiple sensors located inside the cooling components and pipes, and the sensors use the temperature information of the coolant inside the cooling components and pipes.

[0031] The central control module is used to receive and judge the information transmitted by the monitoring module. The central control module has a data range for coolant temperature information. The central control module provides electrical signals to the chiller to increase or decrease the coolant flow rate and temperature.

[0032] When the laser cutting machine is working, the chiller injects coolant into the inlet chamber 15 through the inlet port 16 via pipeline. After being mixed by the mixing component, the mixing component guides the coolant from both ends of the inlet chamber 15 into the outlet chamber 13. Subsequently, the coolant is discharged from the outlet port 14 and returns to the chiller through pipeline, completing the cooling and temperature reduction of the laser head. During the cooling process, multiple sensors transmit real-time temperature data from the inlet pipeline, outlet pipeline, and cooling components to the central control module. The central control module compares the data range with the coolant temperature information. When the temperature in the inlet pipeline is too high or too low, the central control module adjusts the supply temperature of the coolant from the chiller. When the temperature in the cooling components is too high or too low, the central control module adjusts the supply rate of the coolant from the chiller. Based on the temperature data in the outlet pipeline, the central control module adjusts the cooling time of the coolant from the chiller.

[0033] By using a monitoring module to monitor the cooling components in real time, the flow rate or temperature of the coolant supplied by the chiller can be adjusted to ensure that the laser cutting head is at a specific temperature. The coolant enters from the inlet chambers 15 at both ends, is mixed by the mixing element, and then enters the outlet chamber 13 to complete the cooling of the laser cutting head. At the same time, because the two inlet chambers 15 are different in size, the coolant entering from the bottom enters the outlet chamber 13 more quickly and mixes with the coolant entering from the top. This prevents the coolant temperature from increasing too quickly in the outlet chamber 13, which would reduce the cooling effect on the laser cutting head. As a result, there are no dead corners in the circumferential cooling of the laser cutting head, resulting in better cooling uniformity and extending the service life of the laser cutting head.

[0034] Figures 2-4 In this process, the mixing component includes a power unit 23 and a plurality of circumferentially arranged rotating rods 21. Both ends of the rotating rods 21 extend through the liquid outlet chamber 13 into two liquid inlet chambers 15, and a plurality of annular blades 22 are symmetrically arranged at both ends of the rotating rods 21. The power unit 23 drives the plurality of rotating rods 21 to rotate simultaneously, and the plurality of annular blades 22 rotate accordingly to mix the coolant in the liquid inlet chamber 15 and inject it into the liquid outlet chamber 13.

[0035] The power unit 23 includes a first conical gear ring 231, and a plurality of first conical gears 232 are meshed on the outer side of the first conical gear ring 231, and the plurality of first conical gears 232 are fixedly connected to the middle of the corresponding rotating rod 21.

[0036] The power unit 23 also includes a drive motor 233 and a drive bevel gear 234 connected to the drive motor 233, the drive bevel gear 234 being meshed with one of the first bevel gears 232.

[0037] The rotating rod 21 is inclined, and the rotating rod 21 and the first bevel gear 232 on its surface are coaxial.

[0038] When cooling the laser cutting head, the drive motor 233 drives the active bevel gear 234 to rotate, causing the first bevel gear 232 to rotate. The first bevel gear ring 231 rotates accordingly and drives the other first bevel gears 232 to rotate. Multiple rotating rods 21 rotate simultaneously, causing the annular blades 22 to rotate. Since the two sets of annular blades 22 on the same rotating rod 21 are symmetrically arranged, the annular blades 22 guide the coolant in the inlet chamber 15 into the outlet chamber 13 when they rotate.

[0039] By using the power unit 23 to drive multiple rotating rods 21 to rotate simultaneously, the coolant can be introduced into the outlet chamber 13 while the flow rate of the coolant is accelerated, causing the two streams of coolant to mix rapidly in the outlet chamber 13, resulting in a turbulent flow state of the coolant and increasing the heat exchange effect.

[0040] Figures 3-5 In the process, the mixing component also includes a diffuser 24, which includes three rotating plates 241. Multiple diffuser plates 242 are arranged circumferentially in the middle of the rotating plates 241. One of the rotating plates 241 is fixedly connected to a corresponding conical gear ring. The outer sides of the remaining rotating plates 241 are provided with second conical gear rings 243. A second conical gear 244 is meshed with one side of the second conical gear ring 243. Two second conical gears 244 are fixedly connected to both ends of one of the rotating rods 21.

[0041] The diameters of the three rotating plates 241 decrease sequentially, and the rotating plates 241 are matched with the corresponding conical gear rings.

[0042] When the power unit 23 is working, the first bevel gear ring 231 rotates, driving the corresponding rotating plate 241 to rotate. The two second bevel gears 244 rotate with the corresponding rotating rod 21, and the other two rotating plates 241 rotate accordingly. When the rotating plate 241 rotates, the multiple diffuser plates 242 stir the coolant in the mixing chamber, so that it evenly fills the inlet chamber 15 or outlet chamber 13, avoiding inadequate cooling in certain positions inside the inlet chamber 15 or outlet chamber 13.

[0043] The diffuser 24 is powered by the power unit 23, which can mix and stir the coolant in the inlet chamber 15 or outlet chamber 13, so that the internal temperature of the inlet chamber 15 or outlet chamber 13 tends to be uniform, thereby avoiding the situation that some parts of the laser cutting head are not cooled properly.

[0044] Figure 2 In this case, the housing 10 is composed of an inner shell 11 and two outer shells 12, and the inner shell 11 and the two outer shells 12 are fixedly connected.

[0045] The housing 10, consisting of an inner shell 11 and two outer shells 12, allows for easy installation of various components of the mixing element, and after installation, the inner shell 11 and the two outer shells 12 are fixedly connected, making the production of the cooling assembly more convenient.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A cooling control system for a three-dimensional laser cutting machine, characterized in that it includes: The cooling module includes a chiller and a cooling assembly fitted onto the surface of the laser head. The cooling assembly includes a housing (10) and a mixing element. The housing (10) has a mixing chamber inside. The mixing chamber gradually decreases in size from one end of the housing (10) to the other end. The mixing chamber includes an outlet chamber (13) with an outlet (14) and two inlet chambers (15) with inlets (16). The outlet chamber (13) is located in the middle of the two inlet chambers (15). The chiller is connected to the outlet (14) and the inlet (16) through a pipeline. The chiller injects coolant into the inlet chamber (15) through the pipeline. While being mixed by the mixing element, the coolant in the inlet chambers (15) at both ends is introduced into the outlet chamber (13). The coolant is discharged from the outlet (14) to complete the cooling and temperature reduction of the laser head. The monitoring module includes multiple sensors located inside the cooling components and pipes, which are used to acquire coolant temperature information inside the cooling components and pipes. The central control module is used to receive and judge the information transmitted by the monitoring module. The central control module has a data range for coolant temperature information. The central control module provides electrical signals to the chiller to increase or decrease the coolant flow rate and temperature. The mixing component includes a power unit (23) and multiple circumferentially arranged rotating rods (21). Both ends of the rotating rods (21) extend through the liquid outlet chamber (13) into two liquid inlet chambers (15). Multiple annular blades (22) are symmetrically arranged at both ends of the rotating rods (21). The power unit (23) drives the multiple rotating rods (21) to rotate simultaneously, and the multiple annular blades (22) rotate accordingly to mix the coolant in the liquid inlet chamber (15) and inject it into the liquid outlet chamber (13). The power unit (23) includes a first conical gear ring (231), and a plurality of first conical gears (232) are meshed on the outer side of the first conical gear ring (231), and the plurality of first conical gears (232) are fixedly connected to the middle of the corresponding rotating rod (21); The power unit (23) also includes a drive motor (233) and a drive bevel gear (234) connected to the drive motor (233), the drive bevel gear (234) meshing with one of the first bevel gears (232).

2. The cooling control system for a three-dimensional laser cutting machine according to claim 1, characterized in that, The mixing component also includes a diffuser (24), which includes three rotating plates (241). Multiple diffuser plates (242) are arranged circumferentially in the middle of the rotating plates (241). One of the rotating plates (241) is fixedly connected to a corresponding conical gear ring. The outer sides of the remaining rotating plates (241) are provided with second conical gear rings (243). A second conical gear (244) is meshed with one side of the second conical gear ring (243). Two second conical gears (244) are fixedly connected to both ends of one of the rotating rods (21).

3. The cooling control system for a three-dimensional laser cutting machine according to claim 2, characterized in that, The diameters of the three rotating plates (241) decrease sequentially, and the rotating plates (241) are matched with the corresponding conical gear rings.

4. The cooling control system for a three-dimensional laser cutting machine according to claim 2, characterized in that, The rotating rod (21) is inclined and the rotating rod (21) and the first bevel gear (232) on its surface are coaxial.

5. The cooling control system for a three-dimensional laser cutting machine according to claim 1, characterized in that, The housing (10) consists of an inner shell (11) and two outer shells (12), which are fixedly connected.

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