Cooling control system of three-dimensional laser cutting machine

Abstract

The invention discloses a three-dimensional laser cutting machine cooling control system which comprises a cooling module and a monitoring module, the cooling module comprises a cooling-water machine and a cooling assembly connected to the surface of a laser head in a sleeving mode, the cooling assembly comprises a shell and a flow mixing piece, a mixing cavity is formed in the shell, and the mixing cavity is gradually reduced from one end of the shell to the other end of the shell; and a central control module. The monitoring module is used for monitoring the cooling assembly in real time, the flow speed or temperature of cooling liquid supplied by the cooling-water machine is adjusted to ensure that the laser cutting head is in a specific temperature state, and due to the fact that the two liquid inlet cavities are different in size, the cooling liquid entering from the bottom rapidly enters the liquid outlet cavity to be mixed with the cooling liquid entering from the top; and the situation that the cooling effect on the laser cutting head is reduced due to the fact that the temperature of the cooling liquid in the liquid outlet cavity is increased too fast is avoided, and therefore circumferential cooling of the laser cutting head is free of dead corners, the cooling uniformity of the laser cutting head is better, and the service life of the laser cutting head is prolonged.

Description

Technical Field

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

[0002] 3D laser cutting machine is a kind of equipment specially used for high-precision cutting in three-dimensional space. Its main principle is to use the energy of laser to concentrate into a high-density beam in the form of light. The beam is transmitted to the working surface to generate enough energy to melt or vaporize the material to achieve the purpose of cutting and engraving. 3D laser cutting machine uses laser beam to operate in multiple dimensions and can handle complex shapes and delicate cutting tasks.

[0003] However, the greater the power of the laser cutting machine, the more serious the heat generated by the laser cutting head body and the laser generator in the laser cutting machine. The cooling effect of the existing cooling components is poor, and some positions will not be cooled properly, which reduces the service life and is not conducive to the long-term and smooth operation of the high-power laser cutting head. Summary of the invention

[0004] The present invention aims to solve the problem that the cooling effect of the cooling assembly in the prior art is poor and some parts are not cooled properly, and proposes the following technical solution:

[0005] 3D laser cutting machine cooling control system, including:

[0006] A cooling module, wherein the cooling module comprises a water chiller and a cooling component sleeved on the surface of the laser head, wherein the cooling component comprises a shell and a mixing element, wherein a mixing chamber is arranged inside the shell, wherein the mixing chamber gradually decreases from one end of the shell to the other end, wherein the mixing chamber comprises a liquid outlet chamber with a liquid outlet and two liquid inlet chambers with liquid inlets, wherein the liquid outlet chamber is located in the middle of the two liquid inlet chambers, wherein the water chiller is connected to the liquid outlet or the liquid inlet through a pipeline, wherein the water chiller injects the coolant from the liquid inlet into the liquid inlet chamber through a pipeline, and while mixing the coolant through the mixing element, the coolant in the liquid inlet chambers at both ends is introduced into the liquid outlet chamber, and the coolant is discharged from the liquid outlet to complete the cooling of the laser head;

[0007] A monitoring module, the monitoring module comprising a plurality of sensors, the sensors being located in the cooling assembly and the pipeline, the sensors being used to monitor the temperature information of the coolant inside the cooling assembly and the pipeline;

[0008] The central control module is used to receive and judge the information transmitted by the monitoring module. A data interval of coolant temperature information is set inside the central control module. The central control module provides an electrical signal to the chiller to increase or decrease the coolant flow rate and temperature.

[0009] As a preferred embodiment of the above technical solution, the flow mixing element includes a power unit and a plurality of circumferentially arranged rotating rods, both ends of the rotating rods penetrate the liquid outlet cavity and extend into two liquid inlet cavities, and a plurality of annular blades are symmetrically arranged at both ends of the rotating rods. The power unit drives the plurality of rotating rods to rotate simultaneously, and the plurality of annular blades rotate accordingly to mix the coolant in the liquid inlet cavity and inject it into the liquid outlet cavity.

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

[0011] As a preferred embodiment of the above technical solution, the power unit further includes a driving motor and an active bevel gear connected to the driving motor, and the active bevel gear is meshedly connected with one of the first bevel gears.

[0012] As a preferred embodiment of the above technical solution, the mixing part also includes a diffuser portion, which includes three rotating plates, and a plurality of diffuser plates are circumferentially arranged in the middle of the rotating plate, one of the rotating plates is fixedly connected to the corresponding bevel gear ring, and a second bevel gear ring is arranged on the outer side of the remaining rotating plates, and a second bevel gear ring is meshed and connected to one side of the second bevel gear ring, and two of the second bevel 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 match the corresponding conical gear rings.

[0014] As a preferred embodiment of the above technical solution, the rotating rod is arranged obliquely, and the rotating rod and the first bevel gear on the surface thereof are arranged coaxially.

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

[0016] The beneficial effects of the present invention are:

[0017] 1. Use the monitoring module to monitor the cooling components in real time, adjust the coolant flow rate or temperature supplied by the chiller to ensure that the laser cutting head is in a specific temperature state, and the coolant enters from the liquid inlet chambers at both ends and is mixed by the mixing piece before entering the liquid outlet chamber to complete the cooling of the laser cutting head. At the same time, due to the different sizes of the two liquid inlet chambers, the coolant entering the bottom enters the liquid outlet chamber more quickly and mixes with the coolant entering the top, avoiding the coolant temperature in the liquid outlet chamber from increasing too quickly and reducing the cooling effect on the laser cutting head, so that there is no dead angle for the circumferential cooling of the laser cutting head, making the cooling uniformity of the laser cutting head better, so as to extend the service life of the laser cutting head;

[0018] 2. The power unit is used to push multiple rotating rods to rotate simultaneously, which can guide the coolant into the liquid outlet cavity and accelerate the flow rate of the coolant so that the two coolants are quickly mixed in the liquid outlet cavity, making the coolant in a turbulent state and increasing the heat exchange effect;

[0019] 3. The diffuser is powered by the power unit, which can mix and stir the coolant in the liquid inlet cavity or the liquid outlet cavity, so that the internal temperature of the liquid inlet cavity or the liquid outlet cavity tends to be consistent, thereby avoiding the situation where some positions of the laser cutting machine head are not cooled properly. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 Shown is a front view of a cooling assembly in an embodiment;

[0022] Figure 3 What is shown is the internal structure diagram of the housing in the embodiment;

[0023] Figure 4 Shown is a schematic diagram of each part of the power unit in the embodiment;

[0024] Figure 5 Shown is a front cross-sectional view of a cooling assembly in an embodiment.

[0025] In the figure: 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 blades; 23, power unit; 231, first bevel gear ring; 232, first bevel gear; 233, driving motor; 234, active bevel gear; 24, diffuser; 241, rotating plate; 242, diffuser plate; 243, second bevel gear ring; 244, second bevel gear. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings of the specification.

[0027] Example

[0028] Figure 1-Figure 3 The cooling control system of the 3D laser cutting machine includes:

[0029] A cooling module, the cooling module includes a water chiller and a cooling component sleeved on the surface of the laser head, the cooling component includes a shell 10 and a mixing piece, a mixing chamber is arranged inside the shell 10, the mixing chamber gradually decreases from one end to the other end of the shell 10, the mixing chamber includes a liquid outlet chamber 13 with a liquid outlet 14 and two liquid inlet chambers 15 with liquid inlets 16, the liquid outlet chamber 13 is located in the middle of the two liquid inlet chambers 15, the water chiller is connected to the liquid outlet 14 or the liquid inlet 16 through a pipeline, the water chiller injects the coolant from the liquid inlet 16 into the liquid inlet chamber 15 through a pipeline, and the coolant in the liquid inlet chambers 15 at both ends is introduced into the liquid outlet chamber 13 while being mixed by the mixing piece, and the coolant is discharged from the liquid outlet 14 to complete the cooling of the laser head;

[0030] A monitoring module, the monitoring module comprising a plurality of sensors, the sensors being located in the cooling assembly and the pipeline, the sensors being used to monitor the temperature information of the coolant inside the cooling assembly and the pipeline;

[0031] The central control module is used to receive and judge the information transmitted by the monitoring module. A data interval of coolant temperature information is set inside the central control module. The central control module provides an electrical signal to the chiller to increase or decrease the coolant flow rate and temperature.

[0032] When the laser cutting machine is working, the chiller injects the coolant from the liquid inlet 16 into the liquid inlet cavity 15 through the pipeline. After mixing through the mixing piece, the mixing piece guides the coolant in the liquid inlet cavities 15 at both ends into the liquid outlet cavity 13. Then the coolant is discharged from the liquid outlet 14 and returns to the rear chiller through the pipeline to complete the cooling of the laser head. During the cooling process, multiple sensors transmit the real-time temperature data in the liquid inlet pipeline, liquid outlet pipeline and cooling component to the central control module. The central control module compares the data interval with the coolant temperature information. When the temperature in the liquid inlet pipeline is too high or too low, the central control module adjusts the supply temperature of the coolant to the chiller. When the temperature in the cooling component is too high or too low, the central control module adjusts the supply speed of the coolant to the chiller. According to the temperature data in the liquid outlet pipeline, the central control module adjusts the cooling time of the coolant by the chiller.

[0033] The monitoring module is used to monitor the cooling component in real time, and the flow rate or temperature of the coolant supplied by the chiller is adjusted to ensure that the laser cutting head is in a specific temperature state. The coolant enters from the liquid inlet chamber 15 at both ends and is mixed by the mixing piece before entering the liquid outlet chamber 13 to complete the cooling of the laser cutting head. At the same time, due to the different sizes of the two liquid inlet chambers 15, the coolant entering the bottom enters the liquid outlet chamber 13 more quickly and mixes with the coolant entering the top, thereby avoiding the coolant temperature in the liquid outlet chamber 13 increasing too quickly and reducing the cooling effect on the laser cutting head, so that there is no dead angle for the circumferential cooling of the laser cutting head, so that the cooling uniformity of the laser cutting head is better, thereby extending the service life of the laser cutting head.

[0034] Figure 2-Figure 4 In the figure, the flow mixing element includes a power part 23 and a plurality of circumferentially arranged rotating rods 21, both ends of the rotating rods 21 penetrate the liquid outlet cavity 13 and extend into the two liquid inlet cavities 15, and a plurality of annular blades 22 are symmetrically arranged at both ends of the rotating rods 21. The power part 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 cavity 15 and inject it into the liquid outlet cavity 13.

[0035] The power unit 23 includes a first bevel gear ring 231 . A plurality of first bevel gears 232 are meshedly connected to the outer side of the first bevel gear ring 231 . The plurality of first bevel gears 232 are fixedly connected to the middle of the corresponding rotating rod 21 .

[0036] The power unit 23 further includes a driving motor 233 and a driving bevel gear 234 connected to the driving motor 233 . The driving bevel gear 234 is meshed and connected with one of the first bevel gears 232 .

[0037] The rotating rod 21 is arranged obliquely, and the rotating rod 21 and the first bevel gear 232 on the surface thereof are arranged coaxially.

[0038] When cooling the laser cutting head, the driving motor 233 drives the active bevel gear 234 to rotate, causing the first bevel gear 232 to rotate, and the first bevel gear ring 231 rotates accordingly and drives other first bevel gears 232 to rotate. Multiple rotating rods 21 rotate at the same time to rotate the annular blades 22. Because the two groups of annular blades 22 on the same rotating rod 21 are symmetrically arranged, the annular blades 22 rotate to introduce the coolant in the liquid inlet chamber 15 into the liquid outlet chamber 13.

[0039] The power unit 23 is used to push the multiple rotating rods 21 to rotate simultaneously, so that the coolant can be introduced into the liquid outlet cavity 13, and the flow rate of the coolant can be accelerated so that the two streams of coolant can be quickly mixed in the liquid outlet cavity 13, so that the coolant is in a turbulent state, thereby increasing the heat exchange effect.

[0040] Figure 3-Figure 5 In the embodiment, the mixing element further includes a diffuser 24, which includes three rotating plates 241, and a plurality of diffuser plates 242 are circumferentially arranged in the middle of the rotating plate 241, wherein one of the rotating plates 241 is fixedly connected to the corresponding bevel gear ring, and a second bevel gear ring 243 is arranged on the outer side of the remaining rotating plates 241, and a second bevel gear 244 is meshedly connected to one side of the second bevel gear ring 243, and two second bevel 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 match the corresponding conical gear rings.

[0042] When the power unit 23 is working, the first bevel gear ring 231 rotates to drive the corresponding rotating plate 241 to rotate, and the two second bevel gears 244 rotate along with the corresponding rotating rods 21, and the other two rotating plates 241 rotate accordingly. When the rotating plate 241 rotates, the multiple diffusion plates 242 stir the coolant in the mixing chamber to make it evenly fill the liquid inlet chamber 15 or the liquid outlet chamber 13, thereby avoiding insufficient cooling of certain positions inside the liquid inlet chamber 15 or the liquid outlet chamber 13.

[0043] The diffuser 24 is powered by the power unit 23 to mix and stir the coolant in the liquid inlet chamber 15 or the liquid outlet chamber 13, so that the internal temperature of the liquid inlet chamber 15 or the liquid outlet chamber 13 tends to be consistent, thereby avoiding insufficient cooling in some positions of the laser cutting head.

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

[0045] The housing 10 composed of the inner housing 11 and the two outer housings 12 can be conveniently installed with the components of the flow mixing element, and after the installation, the inner housing 11 and the two outer housings 12 are fixedly connected, so that the production of the cooling assembly is more convenient.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A cooling control system for a three-dimensional laser cutting machine, characterized in that it includes: A cooling module, the cooling module comprising a water chiller and a cooling component sleeved on the surface of a laser head, the cooling component comprising a shell (10) and a mixing element, a mixing chamber being arranged inside the shell (10), the mixing chamber gradually decreasing from one end of the shell (10) to the other end, the mixing chamber comprising a liquid outlet chamber (13) with a liquid outlet (14) and two liquid inlet chambers (15) with liquid inlets (16), the liquid outlet chamber (13) being located in the middle of the two liquid inlet chambers (15), the water chiller being connected to the liquid outlet (14) or the liquid inlet (16) through a pipeline, the water chiller injecting cooling liquid from the liquid inlet (16) into the liquid inlet chamber (15) through a pipeline, and introducing the cooling liquid in the liquid inlet chambers (15) at both ends into the liquid outlet chamber (13) while mixing through the mixing element, and the cooling liquid is discharged from the liquid outlet (14) to complete the cooling of the laser head; A monitoring module, the monitoring module comprising a plurality of sensors, the sensors being located in the cooling assembly and the pipeline, the sensors being used to monitor the temperature information of the coolant inside the cooling assembly and the pipeline; The central control module is used to receive and judge the information transmitted by the monitoring module. A data interval of coolant temperature information is set inside the central control module. The central control module provides an electrical signal to the chiller to increase or decrease the coolant flow rate and temperature.

2. The cooling control system of the three-dimensional laser cutting machine according to claim 1, characterized in that: The flow mixing element comprises a power unit (23) and a plurality of circumferentially arranged rotating rods (21), both ends of the rotating rods (21) penetrate through the liquid outlet cavity (13) and extend into the two liquid inlet cavities (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 cavity (15) and inject the coolant into the liquid outlet cavity (13).

3. The cooling control system of the three-dimensional laser cutting machine according to claim 2, characterized in that: The power unit (23) comprises a first bevel gear ring (231), the outer side of the first bevel gear ring (231) is meshedly connected with a plurality of first bevel gears (232), and the plurality of first bevel gears (232) are fixedly connected to the middle of the corresponding rotating rod (21).

4. The cooling control system of the three-dimensional laser cutting machine according to claim 3, characterized in that: The power unit (23) further comprises a driving motor (233) and a driving bevel gear (234) connected to the driving motor (233), and the driving bevel gear (234) is meshedly connected with one of the first bevel gears (232).

5. The cooling control system of the three-dimensional laser cutting machine according to claim 3, characterized in that: The flow mixing element further comprises a diffuser (24), the diffuser (24) comprising three rotating plates (241), a plurality of diffuser plates (242) being circumferentially arranged in the middle of the rotating plates (241), one of the rotating plates (241) being fixedly connected to a corresponding bevel gear ring, and second bevel gear rings (243) being arranged on the outer sides of the remaining rotating plates (241), one side of the second bevel gear ring (243) being meshingly connected to a second bevel gear (244), and two second bevel gears (244) being fixedly connected to two ends of one of the rotating rods (21).

6. The cooling control system of the three-dimensional laser cutting machine according to claim 5, characterized in that: The diameters of the three rotating plates (241) decrease in sequence, and the rotating plates (241) match the corresponding conical gear rings.

7. The cooling control system of the three-dimensional laser cutting machine according to claim 6, characterized in that: The rotating rod (21) is arranged obliquely, and the rotating rod (21) and the first bevel gear (232) on its surface are arranged coaxially.

8. The cooling control system of the three-dimensional laser cutting machine according to claim 1, characterized in that: 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.

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