A water-cooled circulation device for laser cutting

Abstract

This utility model relates to a water-cooled circulation device for laser cutting, including a support platform with two limiting bearing plates aligned on it. A barrier cover is also provided on the top edge of the support platform. A three-axis positioning component is provided on the inner wall of the barrier cover away from the support platform to dynamically change the working position of the laser emitter. A water-cooling structure capable of heat transfer and cooling the cut area of ​​the workpiece is fitted outside the laser emitter. A water circulation component capable of recycling and filtering wastewater is provided in the cavity of the support platform, and the water circulation component is also connected to a storage tank supplying liquid to the water-cooling structure. This utility model enables the recycling and filtration of wastewater cooling to achieve the reuse of cooling water.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for laser cutting, and in particular to a water-cooled circulation device for laser cutting. Background Technology

[0002] Laser cutting utilizes the photothermal effect to achieve extremely high energy density at the focal point by focusing laser energy through a lens. Due to its high processing efficiency, minimal residue, non-contact processing, and ease of automation, laser cutting has become a primary method for workpiece removal. During cutting, a focused, high-power-density laser beam irradiates the workpiece, causing it to rapidly melt, vaporize, ablate, or reach its ignition point. Simultaneously, a high-speed gas flow coaxial with the beam removes the molten material, thus separating the workpiece. Currently, laser processing includes dry cutting and wet cutting. Dry cutting uses auxiliary gas to blow onto the laser-material interaction area to remove debris and cool the laser-affected zone. Wet cutting incorporates additional water jet channels to accelerate cooling of the cutting area, offering advantages particularly in cutting small parts. Small metal parts generate heat rapidly during cutting, and wet cutting plays a crucial role in minimizing the temperature of the heat-affected zone, helping to maintain optimal thermal management within the workpiece. In addition, heat will accumulate inside the laser head, causing it to overheat after cutting the workpiece for a period of time. Therefore, a cooling structure is needed to cool the laser head and reduce its operating temperature.

[0003] For example, CN202684335U discloses a coaxial nozzle for laser micromachining of thin-walled pipes, which mainly solves the problems of high wear and tear and complex water guiding mechanisms in the laser processing of small-diameter pipes in existing technologies. This invention employs a coaxial nozzle comprising three parts: an upper connecting module I connected to the laser generator, a middle transition module II, and a lower nozzle module III. Nozzle module III consists of an inner nozzle core and an outer nozzle core, both threaded and connected by a threaded fit, sealed at the connection point with an O-ring. A high-pressure water inlet is located on the side wall of the outer nozzle core. The aforementioned patent improves laser cutting effect and cutting head cooling through a wet cutting process. However, existing wet laser cutting equipment lacks coolant circulation capabilities, typically discharging wastewater directly, leading to significant environmental pollution. Furthermore, the metal fragments contained in the wastewater cannot be effectively recovered, resulting in resource waste and increased water consumption. The failure to achieve coolant recycling increases processing costs. Utility Model Content

[0004] The purpose of this invention is to provide a laser cutting water cooling circulation device that can recycle, filter, and cool the cooling waste liquid to achieve the recycling of cooling water. This addresses the shortcomings of existing laser cutting equipment, which, although employing wet cutting methods to improve the heat dissipation protection of the cutting head and the cooling and thermal management of the cutting area, do not have a waste liquid recycling and treatment structure. As a result, the waste liquid cannot be recycled, and the direct discharge of waste liquid causes environmental pollution and resource waste, while also increasing processing costs.

[0005] The technical solution adopted by this utility model is as follows: a laser cutting water-cooled circulation device, including a support platform, two limiting bearing plates are aligned on the support platform, a barrier cover is also provided on the top edge of the support platform, a three-axis adjustment component is provided on the inner wall of the barrier cover away from the support platform to change the working position of the laser emitting head in a linkage manner, a water-cooling structure is fitted on the outside of the laser emitting head to transfer heat to it and cool the cutting area of ​​the workpiece, a water circulation component is provided in the platform cavity of the support platform to recover and filter the coolant wastewater, and the water circulation component is also connected to a liquid storage tank that supplies liquid to the water-cooling structure.

[0006] According to a preferred embodiment, the water circulation assembly includes a waste liquid inlet pipe, a buffer chamber, a sedimentation chamber, an overflow filtration chamber, a heat exchange chamber, and a return liquid outlet pipe. The output end of the waste liquid inlet pipe is connected to the top inlet of the buffer chamber, and the side of the buffer chamber is connected to the sedimentation chamber, which is capable of initially separating impurities in the waste liquid through sedimentation. The side of the sedimentation chamber away from the buffer chamber is connected to the overflow filtration chamber, and the overflow outlet port of the overflow filtration chamber is connected to the heat exchange chamber. The output end of the heat exchange chamber is connected to the liquid storage tank through the return liquid outlet pipe.

[0007] According to a preferred embodiment, a plurality of inclined flow-damping plates are arranged in an alternating manner on the two parallel inner sidewalls of the buffer cavity.

[0008] According to a preferred embodiment, the bottom of the sedimentation chamber is provided with a slag collection trough, and the bottom of the slag collection trough is connected to a slag discharge valve that can discharge the collected precipitated impurities through a transparent slag storage pipe; a vertical baffle is also provided in the sedimentation chamber to block the liquid flow fluctuations carried by the waste liquid when it flows in.

[0009] According to a preferred embodiment, the overflow filtration chamber includes an overflow cavity communicating with the side of the sedimentation chamber away from the buffer chamber, an inverted conical filter screen fitted onto the annular step of the upper port of the overflow cavity, and a top cover sealed and fastened to the upper port of the overflow cavity, wherein an overflow drain pipe is also inserted into the side of the top cover.

[0010] According to a preferred embodiment, the flat heat exchange cavity is embedded in the bottom surface of the support platform, and heat exchange plates are also embedded in the lower cavity wall of the flat heat exchange cavity outside the support platform. A flow-guiding fan capable of driving external airflow to flow directionally across the surface of the heat exchange plates is also provided on the lower surface of the flat heat exchange cavity. Irregularly shaped input interfaces and irregularly shaped output interfaces for liquid flow input and output are also provided at both ends of the flat heat exchange cavity.

[0011] According to a preferred embodiment, a manifold is provided on the support platform, and the bottom end of the manifold is connected to the inlet end of the waste liquid inlet pipe of the water circulation component.

[0012] According to a preferred embodiment, the liquid storage tank is detachably installed on the outside of the barrier cover, and a liquid filling port is provided on the top surface of the liquid storage tank; a liquid guide pipe is inserted into the bottom of the liquid storage tank, and a pressurized liquid discharge pump capable of pressurizing the liquid and inputting it into the liquid guide pipe is provided at the liquid discharge port of the liquid storage tank.

[0013] The beneficial effects of this utility model are:

[0014] The water circulation component in this application can effectively recycle, filter, and cool the cooling waste liquid, avoiding environmental pollution caused by direct discharge of waste liquid. It achieves the recycling of coolant, reducing water waste and cooling water usage costs. Furthermore, it can recycle raw materials such as metal scraps, reducing the harm to the environment and human health caused by scrap entering the environment. It also cools the filtered liquid to a suitable operating temperature, effectively dissipating heat from the laser emitter during the recycling process. The buffer chamber in this application effectively reduces the impact of waste liquid inflow, thereby mitigating the impact of liquid flow fluctuations on the subsequent impurity filtration chamber. The sedimentation chamber in this application allows large particles of impurities to gradually separate from the waste liquid and deposit at the bottom of the chamber through self-sedimentation, effectively filtering out heavier impurities in the waste liquid. The overflow filtration chamber in this application allows the upper clear liquid to be discharged through overflow, and its internal intercepting filter effectively blocks impurities, improving the separation effect between the overflow liquid and impurities, resulting in a purer overflow stream. The heat exchange chamber provided in this application can fully cool the liquid through heat transfer, thereby ensuring that the returning coolant has a suitable low temperature and can be effectively used for circulating cooling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a preferred laser cutting water-cooled circulation device proposed in this utility model;

[0016] Figure 2This is an enlarged schematic diagram of the water-cooling structure of a preferred laser cutting water-cooling circulation device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the water circulation component of a preferred laser cutting water-cooled circulation device proposed in this utility model.

[0018] List of reference numerals

[0019] 1: Support platform; 2: Limiting bearing plate; 3: Barrier cover; 4: Triaxial adjustment assembly; 5: Laser emitter; 6: Water-cooled structure; 7: Water circulation assembly; 8: Storage tank; 11: Manifold; 61: Drainage ring; 62: Drainage port; 71: Waste liquid inlet pipe; 72: Buffer chamber; 73: Sedimentation chamber; 74: Overflow filtration chamber; 75: Heat exchange chamber; 76: Return liquid outlet pipe; 721: Inclined flow buffer plate; 731: Slag collection trough; 732 733: Transparent slag storage tube; 734: Slag discharge valve; 741: Vertical partition; 742: Overflow cavity; 743: Inverted conical filter screen; 744: Top cover; 745: Overflow drain pipe; 756: Flat heat exchange chamber; 757: Heat exchange plate; 758: Drainage fan; 759: Irregularly shaped input interface; 750: Irregularly shaped output interface; 7511: Heat insulation layer; 7512: Flow-changing convex strip; 81: Liquid inlet; 82: Liquid guide pipe; 83: Pressurized drain pump. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] The technical solutions provided by this utility model will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that the descriptions of these embodiments are for the purpose of helping to understand this utility model, but do not constitute a limitation thereof. In some examples, because some implementation methods belong to existing or conventional technology, they are not described or are not described in detail. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and do not have any sequential or technical meaning.

[0022] The following is a detailed explanation with reference to the accompanying drawings.

[0023] Example 1

[0024] This application provides a water-cooled circulation device for laser cutting, which includes a support platform 1, a limiting bearing plate 2, a barrier cover 3, a three-axis adjustment assembly 4, a laser emitter 5, a water-cooling structure 6, a water circulation assembly 7, and a liquid storage tank 8.

[0025] according to Figure 1-3 In one specific embodiment, the support platform 1 provides a mounting base structure, facilitating the installation of different functional components on it, raising the height of the functional components, and improving the convenience of disassembly, assembly, and maintenance. Two limiting bearing plates 2, with a gap between them, are positioned on the support platform 1 to accommodate workpieces, allowing the lower surface of the plate corresponding to the area to be cut on the workpiece placed on the two limiting bearing plates 2 to be exposed, thus facilitating the fall of wastewater, slag, and debris during the cutting process through the gap between the two limiting bearing plates 2. A barrier cover 3 is also provided on the top edge of the support platform 1. A three-axis positioning component 4, which links the working position of the laser emitter head 5, is provided on the inner wall of the barrier cover 3 away from the support platform 1. A water-cooling structure 6, capable of heat transfer to the laser emitter head 5 and cooling the area to be cut on the workpiece, is fitted on the outside of the laser emitter head 5. A water circulation component 7, capable of recovering and filtering coolant wastewater, is provided in the cavity of the support platform 1. The water circulation component 7 is also connected to a storage tank 8 that supplies liquid to the water-cooling structure 6. The water-cooled structure 6, the water circulation component 7, and the liquid storage tank 8 can form a water circulation loop to realize the recycling of cooling water, reduce water waste, and effectively cool the recovered cooling water, thereby improving the effectiveness of coolant recycling.

[0026] Preferably, a manifold 11 is provided on the support platform 1. More preferably, the bottom end of the manifold 11 penetrates the top wall of the support platform 1 cavity and is connected to the inlet end of the waste liquid inlet pipe 71 of the water circulation assembly 7 installed in the support platform 1. Specifically, the manifold 11 has an inverted frustum-shaped cavity profile, thereby collecting and gathering liquids and debris from the cutting process. Specifically, the converging outlet at the lower end of the manifold 11 and the inlet of the waste liquid inlet pipe 71 are provided with matching sealing flanges, thereby achieving a sealed connection between the two.

[0027] Preferably, the limiting support plate 2 is suspended in mid-air, with its edge connected to the side wall of the confluence channel 11. Specifically, the three sides of the two limiting support plates 2, excluding the cutting gap formed by their mutual cooperation, are fixed to the confluence channel 11 by welding, so that the liquid left through the cutting gap can effectively enter the confluence channel 11. Preferably, the limiting support plate 2 can be made of porous plate material, so that residual liquid and impurities on its surface can fall into the confluence channel 11 by manual cleaning, blowing, or rinsing, facilitating the cleaning of the plate surface and ensuring its cleanliness. More preferably, the limiting support plate 2 provided in this application can be equipped with a clamping mechanism by means of hole clamping or bolt positioning, thereby using the clamping mechanism arranged in alignment or around multiple points around the workpiece to position the workpiece on the limiting support plate 2. Specifically, the clamping mechanism can be a downward clamping bar with an inverted L-shaped cross section, which can limit the placement position of the workpiece by butt joint and downward positioning. The pressure clamping bar is detachably installed by means of insertion into the hole in the limiting support plate 2. Specifically, the limiting support plate 2 may also have a workpiece-fitting groove cavity, so that the workpiece is clamped in the groove cavity.

[0028] Preferably, the barrier cover 3 has a hinged door structure on its side, which facilitates the disassembly and assembly of workpieces inside the cover cavity and the maintenance of accessories such as the laser emitter head. Preferably, the hinged door structure is also provided with a transparent observation window. Preferably, the lower opening of the barrier cover 3 is provided with a ring plate, and a sealing gasket is embedded in the ring plate, so that when the ring plate is fixed to the support platform 1 by countersunk screws, the assembly can be sealed.

[0029] Preferably, the three-axis positioning assembly 4 consists of two parallel Y-axis guide rail assemblies, an X-axis guide rail assembly mounted on the moving end of the two parallel Y-axis guide rail assemblies, and a lifting hydraulic rod mounted on the moving end of the X-axis guide rail assembly. The laser emitter 5 is mounted on the lower axial end of the lifting hydraulic rod. The laser emitter 5 moves in the X, Y, and Z axes through the cooperation of the Y-axis guide rail assemblies, X-axis guide rail assemblies, and lifting hydraulic rod, thereby achieving position adjustment of the laser emitter 5 within a certain spatial range. Preferably, the Y-axis guide rail assembly is mounted on the inner top surface of the barrier cover 3 by welding or bolting. Specifically, the Y-axis guide rail assembly and X-axis guide rail assembly can be LE / 650ZK-1A type electric high-precision guide rail products; the lifting hydraulic rod can be KL300N type high-precision electric hydraulic telescopic rod, which can effectively position the working height. The three-axis adjustment mechanism that achieves workstation adjustment in three-dimensional space through guide rail and lead screw structure has been clearly identified in existing patents such as CN206839415U and CN211564874U as an existing technology. Therefore, this application will not elaborate further.

[0030] Preferably, the laser emitter 5 can be installed on the lower axial end of the lifting hydraulic rod of the three-axis positioning assembly 4 by welding, flange bolt connection, or other methods. Preferably, the laser emitter 5 is connected to a laser located outside the barrier cover 3 via an optical fiber cable, so that the laser beam generated by the laser can be transmitted to the laser emitter 5 via the optical fiber cable. The laser emitter 5 then shapes and focuses the laser beam through its built-in optical lens, thereby outputting a high-energy laser beam. Preferably, an optical lens is provided in the main housing section of the laser emitter, and a nozzle for emitting the laser beam is detachably installed at the lower end of the main housing. Preferably, the laser emitter 5 can be an existing ZKLW9500bc type laser cutting head, which has a collimation module, a focusing module, a protective lens module, and a nozzle located at the lower opening of the housing. An optical fiber cable for inputting the laser beam into the collimation module is also inserted into the top or side of the housing.

[0031] Preferably, the drain ring 61 of the water-cooled structure 6 is sealed onto the nozzle of the laser emitter head 5, thereby forming a ring-shaped flow guiding gap between the drain ring 61 and the nozzle. Preferably, a drain port 62 communicating with the output end of the liquid guiding tube 82 is also inserted into the side of the drain ring 61. Preferably, the drain ring 61 can be fixed to the nozzle by welding, thereby integrally connecting with the nozzle 51, ensuring the coaxiality of the two, avoiding the intersection of the ring-shaped liquid flow and the beam, and ensuring the coaxial parallel output state of the two. Specifically, the water-cooled structure 6 forms an outer ring cavity channel in a manner similar to that of the existing patents with publication numbers CN202506971U or CN202684335U. The drain ring 61 of this application is directly fixed to the outside of the nozzle by welding or other methods.

[0032] Preferably, the water circulation assembly 7 includes a waste liquid inlet pipe 71, a buffer chamber 72, a sedimentation chamber 73, an overflow filtration chamber 74, a heat exchange chamber 75, and a return liquid outlet pipe 76. Preferably, the output end of the waste liquid inlet pipe 71 is connected to the liquid inlet on the top surface of the buffer chamber 72. Preferably, the side of the buffer chamber 72 is connected to a sedimentation chamber 73, which is capable of initial separation of impurities in the waste liquid through sedimentation. More preferably, the side of the sedimentation chamber 73 away from the buffer chamber 72 is connected to the overflow filtration chamber 74, and the overflow outlet port of the overflow filtration chamber 74 is connected to the heat exchange chamber 75. Preferably, the output end of the heat exchange chamber 75 is connected to the storage tank 8 through the return liquid outlet pipe 76. The buffer chamber 72 provided in this application can effectively reduce the impact force when the waste liquid flows in, thereby reducing the impact of liquid flow input fluctuations on the subsequent impurity filtration chamber. The sedimentation chamber 73 provided in this application can allow impurities to gradually separate from the waste liquid and deposit at the bottom of the chamber through the self-precipitation of large particles, thereby effectively filtering impurities with large self-weight in the waste liquid. The overflow filter chamber 74 provided in this application can discharge the upper clear liquid through overflow, and the intercepting filter screen inside can effectively block impurities, thereby improving the separation effect between the overflow liquid and impurities, resulting in better purity of the overflow liquid flow. The heat exchange chamber 75 provided in this application can fully cool the liquid through heat transfer, so that the return coolant has a suitable low temperature state, which facilitates its effective use for circulation cooling. The water circulation component 7 provided in this application can effectively recycle, filter and cool the cooling waste liquid, avoiding environmental pollution caused by direct discharge of waste liquid, realizing the recycling of coolant, reducing water waste and cooling water usage costs, and can also recycle raw materials such as metal scraps, reducing the harm of scraps to the environment and human body. Furthermore, it can cool the filtered liquid to a suitable working temperature, thereby effectively dissipating heat from the laser emitter during the recycling process.

[0033] Preferably, multiple inclined flow damping plates 721 with progressively increasing inclination angles are arranged in an alternating manner on the two parallel inner sidewalls of the buffer chamber 72, thereby gradually reducing the impact force of the input waste liquid.

[0034] Preferably, the bottom of the sedimentation chamber 73 is provided with a slag collection slot 731. Preferably, the bottom of the slag collection slot 731 is connected to a slag discharge valve 733, which can discharge the collected precipitated impurities, via a transparent slag storage pipe 732. Preferably, the sedimentation chamber 73 is also provided with a vertical baffle 734, which can block the liquid flow fluctuations carried by the waste liquid when it flows in. More preferably, a plurality of inverted V-shaped through holes are arrayed on the vertical baffle 734, thereby reducing and suppressing the liquid flow shock waves through the bending of the cavities.

[0035] Preferably, the overflow filtration chamber 74 includes an overflow chamber 741 communicating with the side of the sedimentation chamber 73 away from the buffer chamber 72, an inverted conical filter screen 742 mounted on the annular step of the upper port of the overflow chamber 741, and a top cover 743 sealed to the upper port of the overflow chamber 741. More preferably, an overflow drain pipe 744 for discharging overflowing filter liquid is also inserted into the side of the top cover 743. Preferably, the top cover 743 is equipped with a timing sensor, a hydraulic sensor, and a liquid level sensor, and a hydraulic sensor is also provided on the cavity wall of the overflow chamber 741. Thus, when a significant pressure difference is observed between the hydraulic pressure monitored by the two hydraulic sensors located above and below the inverted conical filter screen 742, it indicates that the inverted conical filter screen 742 has a significant blockage problem. This facilitates the operator to disassemble, maintain, and unclog the filter screen structure based on the monitoring data, thereby ensuring the actual continuous filtration capacity of the inverted conical filter screen 742. Specifically, the timing sensor can also monitor and record the total duration of filtration operation, allowing operators to maintain the filter structure according to the maintenance manual when the differential pressure has not reached the warning value but the cumulative operating time has reached the threshold, thereby improving the continuous filtration effect. Specifically, the level sensor can also monitor the liquid level change in the overflow filter chamber 74, allowing operators to control the flow rate of the return liquid. This allows for reducing the power of the pump on the return liquid outlet pipe 76 and decreasing the return liquid pumping flow rate during periods of high impurity content and decreased filtration efficiency, preventing dry pumping and damage to the pump. Preferably, the inverted conical filter screen 742 includes an annular positioning strip and a conical mesh body disposed on the inner annular surface of the annular positioning strip.

[0036] Preferably, the flat heat exchange cavity 751 of the heat exchange cavity 75 is embedded in the bottom surface of the support platform 1. Preferably, a heat insulation layer 7511 is applied to the cavity wall of the flat heat exchange cavity 751 within the support platform 1. Preferably, multiple flow-changing protrusions 7512 are also spaced apart on the top surface of the cavity of the flat heat exchange cavity 751. The flow-changing protrusions 7512 can change the cross-sectional size of different sections of the flat heat exchange cavity 751, thereby continuously changing the flow state of the liquid in the flat heat exchange cavity 751, so that the liquid molecules accelerate their movement and are effectively absorbed by the heat exchange plates 752 to achieve cooling. Preferably, heat exchange plates 752 are also embedded in the lower cavity wall of the flat heat exchange cavity 751 outside the support platform 1. Preferably, a flow-guiding fan 753 is also provided on the lower surface of the flat heat exchange cavity 751, which can drive the external airflow to flow directionally across the surface of the heat exchange plates 752. Preferably, the flat heat exchange cavity 751 is further provided with irregularly shaped input interfaces 754 and irregularly shaped output interfaces 755 at both ends for liquid flow input and output. Preferably, the heat exchange plate 752 can be formed by connecting several semiconductor heat exchange plates in series, and its heat absorption end can contact the return liquid in the flat heat exchange cavity 751, thereby transferring heat from the return waste liquid. Specifically, the output end of the flat heat exchange cavity 751 is also provided with a temperature sensor, which can monitor the temperature of the return liquid after heat transfer, and the temperature data is displayed on the data display screen of the temperature sensor product. This allows the operator to manually adjust the current or voltage of the circuit where the heat exchange plate 752 is located based on the liquid flow temperature monitored by the sensor, thereby changing the power of the heat exchange plate 752, so that the heat exchange plate 752 cools the return liquid flowing over its surface to the set temperature by actively absorbing heat. More preferably, both the temperature sensor and the heat exchanger 752 can be connected to a programmable controller, so that the manufacturer can realize the information correlation between the two by pre-writing a control program. Thus, when the operator sets a temperature threshold on the controller, if the temperature of the reflux liquid detected by the temperature sensor is higher or lower than the threshold, the controller can automatically change the power of the heat exchanger 752 so that it can cool the temperature of the reflux liquid to the set temperature range.

[0037] Preferably, the lower axial end of the liquid guide pipe of the return liquid outlet pipe 76 is provided with a liquid collection chamber that can mate with the irregularly shaped output interface 755. Preferably, the liquid collection chamber can be designed as a secondary filter chamber, so that it can store a sufficient amount of activated carbon or other adsorption filter material, thereby removing substances such as oil layers as needed. Preferably, a timer or other sensing module can also be installed inside to facilitate recording the continuous working time, and then manually replacing the adsorption filter material periodically. This part is mainly done manually periodically, for example, replacing it manually after 100 hours of continuous operation as a life cycle. More preferably, a water pump that drives the directional flow of liquid is provided at the pipe opening where the liquid guide pipe is inserted into the liquid collection chamber. Preferably, the water pump is directly adopted as an SPH series micro water pump, which can effectively drive the directional transfer of the return liquid.

[0038] Preferably, the output end of the return liquid outlet pipe 76 is detachably inserted into the side wall of the liquid storage tank 8. Preferably, the liquid storage tank 8 is detachably installed on the outside of the barrier cover 3, and a liquid inlet 81 is also provided on the top surface of the liquid storage tank 8. Preferably, a liquid guide pipe 82 that can penetrate the barrier cover 3 and is also connected to the water cooling structure 6 is inserted into the bottom of the liquid storage tank 8, and a pressurized liquid discharge pump 83 that can pressurize the liquid and input it into the liquid guide pipe 82 is also provided at the liquid outlet of the liquid storage tank 8. Preferably, the liquid guide pipe 82 includes a rigid pipe that can be positioned and connected, and a flexible spring pipe that can adjust the conveying distance to meet the needs of changing work positions and realize the flexibility of the pipe body. Specifically, the rigid pipe maintains the relative position through insertion, auxiliary support and fixed connection, and the flexible spring pipe can deform, expand and contract and move to ensure the effectiveness of the connection. Preferably, the pressurized discharge pump 83 can pressurize and discharge the coolant as needed, thereby effectively filling the entire annular gap by pressurizing and filling the coolant, so that the coolant can form an annular liquid flow and more effectively achieve heat dissipation of the nozzle of the laser emitter head 5 and cooling of the cutting gap.

[0039] Preferably, the Y-axis guide rail assembly, X-axis guide rail assembly, and electrical components such as the lifting hydraulic rod, laser, heat exchange plate 752, drainage fan 753, sensor, water pump, and pressurized drainage pump 83 of the three-axis positioning assembly 4 involved in this application are all electrically connected to the controller and power supply. The control method of this application is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is only used to protect the mechanical device and its mechanical structural features. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0040] For surface connections between components not explicitly specified in this application, conventional bolt connections, snap-fit ​​connections, or fixed connections such as welding can be used. As these are conventional connection methods, this application will not elaborate further on this part. Specifically, the connecting ends of the assembled components all form flange structures, and the two flange structures are connected by bolts, gaskets, or other structures.

[0041] This utility model is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this utility model. However, regardless of any changes in shape or structure, any technical solution falling within the scope of the claims of this utility model is within the protection scope of this utility model. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A water-cooled circulation device for laser cutting, comprising a support platform (1), characterized in that, Two limiting bearing plates (2) are aligned on the support platform (1). A barrier cover (3) is also provided on the top edge of the support platform (1). A three-axis adjustment component (4) is provided on the inner wall of the barrier cover (3) away from the support platform (1) to change the working position of the laser emitting head (5) in a linkage manner. A water-cooling structure (6) capable of transferring heat to the laser emitter (5) and cooling the cut area of ​​the workpiece is fitted on the outside of the laser emitter (5). A water circulation component (7) capable of recycling and filtering coolant wastewater is provided in the cavity of the support platform (1), and the water circulation component (7) is also connected to a liquid storage tank (8) that supplies liquid to the water-cooled structure (6).

2. The water cooling circulation device for laser cutting according to claim 1, wherein The water circulation assembly (7) includes a waste liquid inlet pipe (71), a buffer chamber (72), a sedimentation chamber (73), an overflow filtration chamber (74), a heat exchange chamber (75), and a return liquid outlet pipe (76), wherein, The output end of the waste liquid inlet pipe (71) is connected to the top inlet of the buffer chamber (72), and the side of the buffer chamber (72) is connected to the sedimentation chamber (73) which is capable of initial separation of impurities in the waste liquid. The side of the sedimentation chamber (73) away from the buffer chamber (72) is connected to the overflow filter chamber (74), and the overflow output port of the overflow filter chamber (74) is connected to the heat exchange chamber (75). The output end of the heat exchange chamber (75) is connected to the liquid storage tank (8) through the return liquid outlet pipe (76).

3. The water cooling circulation device for laser cutting according to claim 2, wherein Multiple inclined flow damping plates (721) are arranged in an alternating manner on the two parallel inner sidewalls of the buffer cavity (72).

4. The water cooling circulation device for laser cutting according to claim 3, wherein The sedimentation chamber (73) has a slag collection slot (731) at the bottom of the chamber, and the bottom of the slag collection slot (731) is connected to a slag discharge valve (733) that can discharge the collected precipitated impurities through a transparent slag storage pipe (732). A vertical partition (734) is also provided inside the deposition chamber (73).

5. The water cooling circulation device for laser cutting according to claim 4, wherein The overflow filtration chamber (74) includes an overflow chamber (741) communicating with the side of the sedimentation chamber (73) away from the buffer chamber (72), an inverted conical filter screen (742) fitted on the annular step of the upper port of the overflow chamber (741), and a top cover (743) sealed and fastened to the upper port of the overflow chamber (741), wherein an overflow drain pipe (744) is also inserted into the side of the top cover (743).

6. The water cooling circulation device for laser cutting according to claim 5, wherein The flat heat exchange cavity (751) of the heat exchange cavity (75) is embedded in the bottom surface of the support platform (1), and heat exchange plates (752) are also embedded in the lower cavity wall of the flat heat exchange cavity (751) outside the support platform (1). A flow-guiding fan (753) capable of driving external airflow to flow directionally across the surface of the heat exchange plate (752) is also provided on the lower surface of the flat heat exchange cavity (751). The flat heat exchange cavity (751) is also provided with irregularly shaped input interface (754) and irregularly shaped output interface (755) for liquid flow input and output at both ends.

7. The water cooling circulation device for laser cutting according to claim 6, wherein A manifold (11) is provided on the support platform (1), and the bottom end of the manifold (11) is connected to the inlet end of the waste liquid inlet pipe (71) of the water circulation component (7).

8. The water cooling circulation device for laser cutting according to claim 7, wherein The liquid storage tank (8) is detachably installed on the outside of the barrier cover (3), and a liquid filling port (81) is also provided on the top surface of the liquid storage tank (8); A liquid guide pipe (82) is inserted into the bottom of the liquid storage tank (8), and a pressurized liquid discharge pump (83) capable of pressurizing the liquid and inputting it into the liquid guide pipe (82) is also provided at the drain port of the liquid storage tank (8).

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