3D laser cutting machine cooling control system

Abstract

The present invention relates to the technical field of laser cutting equipment, and more specifically to a cooling control system for a three-dimensional laser cutting machine, comprising a controller, a chiller, a first water inlet cooling channel and a first water outlet cooling channel connecting the chiller and a laser generator, and a second water inlet cooling channel and a second water outlet cooling channel connecting the chiller and a laser cutting head body. The controller comprises the following modules: a chiller adjustment control module for analyzing the recommended water temperatures of the chiller and the laser cutting head body, and controlling the chiller to adjust the water inlet temperatures of the first and second water inlet cooling channels, respectively, based on the recommended water temperatures of the chiller and the laser cutting head body; and a feedback adjustment module for comparing and analyzing the actual water temperatures collected by the first and second temperature sensors with the corresponding recommended water temperatures, and adjusting the corresponding output water temperature of the chiller based on the comparison results until the actual water temperature approaches the recommended water temperature. The present invention can provide a good cooling effect, thereby increasing the service life.

Description

Technical Field

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

[0002] Laser cutting machines use laser beams to cut workpieces. The main principle is to use the energy of the laser to concentrate it into a high-density beam in the form of light. The beam is transmitted to the work surface, generating enough energy to melt or vaporize the material to achieve the purpose of cutting and engraving. Laser cutting machines have the characteristics of high precision, fast cutting speed, no restrictions on cutting patterns, automatic typesetting to save materials, smooth incisions and low processing costs. In recent years, they have been widely used.

[0003] The laser cutting head is an important component of the laser cutting machine, mainly including the laser cutting head body and laser generator. The greater the power of the laser cutting head, the thicker the metal sheet that can be cut. However, the greater the power of the laser cutting head, the more serious the heat generated by the laser cutting head body and laser generator in the laser cutting head. The existing laser cutting head has poor cooling effect, which shortens its service life and is not conducive to the long-term smooth operation of high-power laser cutting heads. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-dimensional laser cutting machine cooling control system, which can provide a good cooling effect for the laser cutting machine to increase its service life.

[0005] To achieve the above-mentioned object, a cooling control system for a three-dimensional laser cutting machine is provided, comprising a controller, a chiller, a first water inlet cooling channel and a first water outlet cooling channel connecting the chiller and the laser generator, and a second water inlet cooling channel and a second water outlet cooling channel connecting the chiller and the laser cutting head body;

[0006] The connection section between the first water inlet cooling channel and the laser generator is provided with a first temperature sensor; the connection section between the second water inlet cooling channel and the laser cutting head body is provided with a second temperature sensor; and a temperature and humidity sensor for detecting ambient temperature and humidity. The controller includes the following modules:

[0007] Chiller adjustment control module: used to perform interpolation analysis based on the data collected by the temperature and humidity sensor and the temperature and humidity control table to obtain the recommended water temperature for cooling the chiller and the laser cutting head body; and control the chiller to adjust the water inlet temperature of the first water inlet cooling channel and the second water inlet cooling channel respectively according to the recommended water temperature of the chiller and the laser cutting head body;

[0008] Feedback adjustment module: used to compare and analyze the actual water temperature collected by the first temperature sensor and the second temperature sensor with the corresponding recommended water temperature, and adjust the output water temperature of the chiller according to the comparison results until the actual water temperature approaches the recommended water temperature.

[0009] Principles and advantages:

[0010] 1. The setting of the temperature and humidity sensor and the chiller adjustment control module. The laser generator of the laser cutting machine and the optical lens in the laser cutting head body both use water cooling methods. Since water in the air condenses into water when it is cold, when the temperature of the cooling water is 5-7 degrees lower than the room temperature, condensed water will be generated on the surface of the laser and the optical lens. Condensed water will greatly affect the light extraction efficiency of the laser and the transmission of the optical lens, which has a great impact on the laser energy and the service life of the optical components. Therefore, the difference between the cooling water temperature and the ambient air temperature should not be too large. This solution uses the temperature and humidity sensor and the chiller adjustment control module to perform interpolation analysis based on the collected data of the temperature and humidity sensor and the temperature and humidity control table to obtain the recommended water temperature for the cooling chiller and the laser cutting head body, which can avoid the generation of condensed water and indirectly extend the service life of the laser cutting machine.

[0011] 2. The setting of the first temperature sensor, the second temperature sensor, and the feedback adjustment module. Due to the setting of the first water inlet cooling channel and the first water outlet cooling channel, as well as the second water inlet cooling channel and the second water outlet cooling channel, there may be temperature loss in the transmission of cooling water. For example, in hot weather, the cooling water temperature becomes high, which will affect the cooling of the laser cutting machine, thereby affecting the normal operation and even the service life of the laser cutting machine. The feedback adjustment module will compare and analyze the actual water temperature collected by the first temperature sensor and the second temperature sensor with the corresponding recommended water temperature, and adjust the corresponding output water temperature of the chiller according to the comparison results until the actual water temperature approaches the recommended water temperature. This ensures that the difference between the cooling water temperature and the ambient air temperature is not large, which is conducive to the long-term operation of the laser cutting machine.

[0012] Furthermore, the controller further includes the following modules:

[0013] Data storage module: used to store the temperature and humidity control table, the output water temperature of the chiller, and the actual water temperature input to the chiller and the laser cutting head body;

[0014] Temperature and humidity control table optimization module: used to optimize the temperature and humidity control table when the amount of actual water temperature data in the data storage module reaches a preset threshold, and save the optimized temperature and humidity control table to the data storage module.

[0015] Beneficial effect: The setting of the data storage module and the temperature and humidity control table optimization module can optimize the temperature and humidity control table so as to ensure that the cooling of the laser cutting machine can proceed smoothly under different environments, which is beneficial to the long-term operation of the laser cutting machine.

[0016] Furthermore, the controller further includes the following modules:

[0017] Data acquisition module: used to obtain the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel;

[0018] Data storage module: further used to store the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel;

[0019] Loss water temperature analysis module: used to perform water temperature loss analysis based on the output water temperature, actual water temperature, and the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel, and save the water temperature loss analysis results to the data storage module.

[0020] Beneficial Effects: The water temperature loss analysis module is set up to analyze water temperature loss based on the output water temperature, actual water temperature, and the pipe material, length, and diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel, and the second water outlet cooling channel. Because pipes deteriorate over time, their insulation effect is poor and scale accumulates. Through water temperature loss analysis, customers can promptly understand the deterioration of various facilities and equipment, so that they can replace the corresponding facilities to ensure the normal cooling of the laser cutting machine.

[0021] Furthermore, the controller further includes the following modules:

[0022] Monitoring and analysis module: used to analyze water temperature loss data in real time through the water temperature loss analysis module, and conduct a comprehensive evaluation of the water solution of the chiller, the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel based on the water temperature loss data.

[0023] Beneficial effects: The setting of the monitoring and analysis module will analyze the water temperature loss data and conduct a comprehensive evaluation of the water solution of the chiller, the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel based on the water temperature loss data. This allows customers to understand the situation in a timely manner and replace the corresponding facilities to ensure the normal cooling of the laser cutting machine.

[0024] Furthermore, the controller further includes the following modules:

[0025] Recommendation analysis module: used to record the duration when the water temperature loss data reaches the maximum threshold and save it to the data storage module. It is also used to find the water solution of the chiller with the longest duration, the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel from the historical data in the data storage module based on the duration, and recommend them to the user.

[0026] Beneficial Effect: The recommendation analysis module can identify the longest-running chiller water solution, the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel, and the second water outlet cooling channel pipe material, length, and diameter from historical data and recommend them to users. This improves the user experience and eliminates the need for time-consuming screening and selection.

[0027] Furthermore, a connection section between the first outlet cooling channel and the chiller is provided with a third temperature sensor and a first flow sensor; a connection section between the second outlet cooling channel and the chiller is provided with a fourth temperature sensor and a second flow sensor; and the controller further includes the following modules:

[0028] Chiller status analysis module: used to analyze the first working load of the chiller for cooling the laser generator based on the first flow sensor and the output water temperature output by the chiller to the laser generator and the collected data of the third temperature sensor; also used to analyze the second working load of the chiller for cooling the laser cutting head body based on the second flow sensor and the output water temperature output by the chiller to the laser generator and the collected data of the fourth temperature sensor; also used to analyze and calculate the comprehensive working load of the chiller based on the water capacity of the chiller, the first working load and the second working load, and generate an alarm prompt signal when the comprehensive working load is higher than the preset load value.

[0029] Beneficial Effects: The chiller status analysis module is set up to analyze and calculate the comprehensive workload of the chiller. This helps prevent prolonged full-load operation and generates an alarm signal to allow users to intervene in time, thus preventing the normal operation of the laser cutting machine from being affected.

[0030] Furthermore, the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel are marked with different colors.

[0031] Beneficial effect: The first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel can be distinguished, thereby facilitating subsequent disassembly, replacement, inspection and other processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a logic block diagram of a cooling control system for a three-dimensional laser cutting machine according to an embodiment of the present invention;

[0033] Figure 2 Schematic diagram of the cooling water circuit. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific implementation methods:

[0035] Example

[0036] A cooling control system for a three-dimensional laser cutting machine is basically as follows Figure 1 、 Figure 2 As shown, it includes a three-dimensional laser cutting machine, a controller, a chiller, a first water inlet cooling channel and a first water outlet cooling channel connecting the chiller and the laser generator, and a second water inlet cooling channel and a second water outlet cooling channel connecting the chiller and the laser cutting head body. In this embodiment, the controller adopts a PLC programmable logic controller, and the chiller and the three-dimensional laser cutting machine are both conventional types. The first water inlet cooling channel and the first water outlet cooling channel adopt DN25 (1-inch pipe), with a length of 1.5M, and an adapter is provided at the end for connecting to a secondary pipe, the diameter of the secondary pipe is 0.75 inches, and the length is 0.5M. The first water inlet cooling channel and the first water outlet cooling channel belong to a low-temperature water circuit and do not require high temperature of the cooling water. The second water inlet cooling channel and the second water outlet cooling channel have an inner diameter of 12MM and a length of 29M. An adapter is provided at the end for connecting to a secondary pipe, the inner diameter of the secondary pipe is 6MM, and the total length is 1M. The second water inlet cooling channel and the second water outlet cooling channel belong to a high-temperature water circuit, and the cooling water temperature returning to the chiller from the second water outlet cooling channel is high. The first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel, and the second water outlet cooling channel are marked with different colors. In this embodiment, the first water inlet cooling channel is blue, the first water outlet cooling channel is red, the second water inlet cooling channel is white, and the second water outlet cooling channel is black. In other embodiments, the first water inlet cooling channel and the second water inlet cooling channel are both blue, and the first water outlet cooling channel and the second water outlet cooling channel are both red.

[0037] The connecting section between the first water inlet cooling channel and the laser generator is provided with a first temperature sensor, which is arranged on the auxiliary pipe in this embodiment; the connecting section between the second water inlet cooling channel and the laser cutting head body is provided with a second temperature sensor, which is also arranged on the auxiliary pipe in this embodiment; and a temperature and humidity sensor for detecting ambient temperature and humidity is provided on the laser cutting machine; the connecting section between the first water outlet cooling channel and the chiller is provided with a third temperature sensor and a first flow sensor; the connecting section between the second water outlet cooling channel and the chiller is provided with a fourth temperature sensor and a second flow sensor.

[0038] The controller includes the following modules:

[0039] Data acquisition module: used to collect data collected by the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the first flow sensor, the second flow sensor, and the temperature and humidity sensor; also used to obtain the pipe material, pipe length, and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel, the second water outlet cooling channel, and the corresponding auxiliary pipe;

[0040] Chiller adjustment control module: used to perform interpolation analysis based on the collected data of the temperature and humidity sensor and the temperature and humidity control table to obtain the recommended water temperature for cooling the chiller and the laser cutting head body; and control the chiller to adjust the water inlet temperature of the first water inlet cooling channel and the second water inlet cooling channel respectively according to the recommended water temperature of the chiller and the laser cutting head body; the temperature and humidity control table is shown in the following table:

[0041]

[0042]

[0043] With the arrival of summer, in high-temperature and high-humidity environments, condensation can occur when the laser cutting machine's cooling water temperature is set below the corresponding dew point temperature in the table below. Therefore, it is necessary to set the laser cutting machine's cooling water temperature according to the actual temperature and humidity environment on site (cabinet), ensuring that the laser cooling water temperature is set above the corresponding dew point temperature. This also meets the laser's water temperature and cooling requirements. Otherwise, the laser may trigger a high-temperature alarm.

[0044] Feedback adjustment module: used to compare and analyze the actual water temperature collected by the first temperature sensor and the second temperature sensor with the corresponding recommended water temperature, and adjust the output water temperature of the chiller according to the comparison results until the actual water temperature approaches the recommended water temperature.

[0045] Data storage module: used to store the temperature and humidity control table, the output water temperature of the chiller, and the actual water temperature input to the chiller and the laser cutting head body; also used to store the pipe material, pipe length, and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel, and the second water outlet cooling channel;

[0046] Temperature and humidity control table optimization module: used to optimize the temperature and humidity control table when the amount of actual water temperature data in the data storage module reaches a preset threshold, and save the optimized temperature and humidity control table to the data storage module.

[0047] Loss water temperature analysis module: used to perform water temperature loss analysis based on the output water temperature, actual water temperature, and the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel, and save the water temperature loss analysis results to the data storage module.

[0048] Monitoring and analysis module: used to analyze water temperature loss data in real time through the water temperature loss analysis module, and conduct a comprehensive evaluation of the water solution of the chiller, the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel based on the water temperature loss data.

[0049] Recommendation analysis module: used to record the duration when the water temperature loss data reaches the maximum threshold and save it to the data storage module. It is also used to find the water solution of the chiller with the longest duration, the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel from the historical data in the data storage module based on the duration, and recommend them to the user.

[0050] Chiller Status Analysis Module: Analyzes the chiller's first workload for cooling the laser generator based on data collected from the first flow sensor, the chiller's output water temperature to the laser generator, and the third temperature sensor. It also analyzes the chiller's second workload for cooling the laser cutting head body based on data collected from the second flow sensor, the chiller's output water temperature to the laser generator, and the fourth temperature sensor. It also analyzes and calculates the chiller's combined workload based on the chiller's water capacity, the first workload, and the second workload, and generates an alarm signal when the combined workload exceeds a preset load value. For example, it prompts you to replace the cooling water, pipes, or clean scale.

[0051] The above is only an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is excessively described here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. The cooling control system of the three-dimensional laser cutting machine is characterized by: It includes a controller, a chiller, a first water inlet cooling channel and a first water outlet cooling channel connecting the chiller and the laser generator, and a second water inlet cooling channel and a second water outlet cooling channel connecting the chiller and the laser cutting head body; The connection section between the first water inlet cooling channel and the laser generator is provided with a first temperature sensor; the connection section between the second water inlet cooling channel and the laser cutting head body is provided with a second temperature sensor; and a temperature and humidity sensor for detecting ambient temperature and humidity. The controller includes the following modules: Chiller adjustment control module: used to perform interpolation analysis based on the data collected by the temperature and humidity sensor and the temperature and humidity control table to obtain the recommended water temperature for cooling the chiller and the laser cutting head body; and control the chiller to adjust the water inlet temperature of the first water inlet cooling channel and the second water inlet cooling channel respectively according to the recommended water temperature of the chiller and the laser cutting head body; Feedback adjustment module: used to compare and analyze the actual water temperature collected by the first temperature sensor and the second temperature sensor with the corresponding recommended water temperature, and adjust the output water temperature of the chiller according to the comparison results until the actual water temperature approaches the recommended water temperature; The controller also includes the following modules: Data storage module: used to store the temperature and humidity control table, the output water temperature of the chiller, and the actual water temperature input to the chiller and the laser cutting head body; Temperature and humidity control table optimization module: used to optimize the temperature and humidity control table when the amount of actual water temperature data in the data storage module reaches a preset threshold, and save the optimized temperature and humidity control table to the data storage module; The controller also includes the following modules: Data acquisition module: used to obtain the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel; Data storage module: further used to store the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel; Loss water temperature analysis module: used to perform water temperature loss analysis based on the output water temperature, actual water temperature, and the pipe material, pipe length, and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel, and the second water outlet cooling channel, and save the water temperature loss analysis results to the data storage module; Monitoring and analysis module: used to analyze water temperature loss data in real time through the water temperature loss analysis module, and conduct a comprehensive evaluation of the water solution of the chiller, the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel, and the second water outlet cooling channel based on the water temperature loss data; Recommendation analysis module: used to record the duration when the water temperature loss data reaches the maximum threshold and save it to the data storage module. It is also used to find the water solution of the chiller with the longest duration, the pipe material, pipe length and pipe diameter of the first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel from the historical data in the data storage module based on the duration, and recommend them to the user.

2. The cooling control system of a three-dimensional laser cutting machine according to claim 1, characterized in that: The connection section between the first water outlet cooling channel and the chiller is provided with a third temperature sensor and a first flow sensor; the connection section between the second water outlet cooling channel and the chiller is provided with a fourth temperature sensor and a second flow sensor; the controller further includes the following modules: Chiller status analysis module: used to analyze the first working load of the chiller for cooling the laser generator based on the first flow sensor and the output water temperature output by the chiller to the laser generator and the collected data of the third temperature sensor; also used to analyze the second working load of the chiller for cooling the laser cutting head body based on the second flow sensor and the output water temperature output by the chiller to the laser generator and the collected data of the fourth temperature sensor; also used to analyze and calculate the comprehensive working load of the chiller based on the water capacity of the chiller, the first working load and the second working load, and generate an alarm prompt signal when the comprehensive working load is higher than the preset load value.

3. The cooling control system of a three-dimensional laser cutting machine according to claim 1, characterized in that: The first water inlet cooling channel, the first water outlet cooling channel, the second water inlet cooling channel and the second water outlet cooling channel are marked with different colors.

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