A laser cutting equipment for liquid-cooled module cover plates with automatic alignment and correction structure

Abstract

This invention relates to the field of laser cutting equipment technology and discloses a laser cutting device for liquid-cooled module cover plates with an automatic alignment and correction structure. The device includes a machine tool with a cutting worktable mounted on its upper end, a negative pressure suction cup installed through the middle of the cutting worktable, a gantry beam slidably mounted on the machine tool, and positioning rods symmetrically slidably mounted on the upper end of the machine tool. This laser cutting device for liquid-cooled module cover plates with an automatic alignment and correction structure effectively solves the problems of insufficient positioning accuracy and poor flexibility in existing laser cutting equipment, which often uses double-sided fixed clamping and limiting fixtures for large-size, thin-walled liquid-cooled module cover plates. Furthermore, the traditional manual alignment and calibration method has limited processing efficiency and batch consistency, and suffers from serious quality and safety hazards due to human error leading to cover plate hole misalignment and out-of-tolerance contours, resulting in sealing failure and coolant leakage after liquid-cooled module assembly.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, specifically to a liquid-cooled module cover plate laser cutting equipment with an automatic alignment and correction structure. Background Technology

[0002] Existing high-power-density liquid cooling modules possess superior heat dissipation performance and pressure resistance. However, during mass production, the cover plate, as the core pressure-bearing and sealing structure, requires precise cutting and machining of complex flow channel openings, high-precision mounting holes, and irregularly shaped contours. Its dimensional accuracy, geometric tolerances, and surface quality directly determine the assembly sealing performance, flow channel heat dissipation efficiency, and long-term service reliability of the liquid cooling module. Traditional liquid cooling module cover plate cutting methods primarily employ fixed-fixture laser cutting equipment, supplemented by manual labor for sheet material loading, positioning calibration, and cutting.

[0003] To address this issue, this application designs a laser cutting device for liquid-cooled module cover plates with an automatic alignment and correction structure. Existing laser cutting equipment mostly uses double-sided fixed clamping and limiting fixtures, which are mainly designed for general hardware parts with low precision requirements. When clamping and limiting large-sized thin-walled liquid-cooled module cover plates, there are problems with insufficient positioning accuracy and poor flexibility. The processing efficiency and batch consistency of traditional manual alignment and calibration methods need to be improved. There are serious quality and safety hazards caused by manual operation errors, such as cover plate hole offset and contour deviation, which can lead to sealing failure and coolant leakage after liquid-cooled module assembly. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a laser cutting device for liquid-cooled module cover plates with an automatic alignment and correction structure. This effectively solves the problems of insufficient positioning accuracy and poor flexibility when using existing laser cutting equipment, which primarily employs double-sided fixed clamping and limiting fixtures for general hardware parts with lower precision requirements. Furthermore, traditional manual alignment and calibration methods suffer from inefficiencies in processing efficiency and batch consistency, leading to serious quality and safety hazards such as cover plate hole misalignment and out-of-tolerance contours due to human error, resulting in sealing failure and coolant leakage after liquid-cooled module assembly.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a laser cutting device for a liquid-cooled module cover plate with an automatic alignment and correction structure, comprising:

[0007] The machine tool is equipped with a cutting worktable at the top. A negative pressure suction cup is installed through the middle of the cutting worktable. A gantry beam is slidably installed on the machine tool from left to right. Positioning rods are symmetrically slidably installed at the top of the machine tool. The two positioning rods are equipped with alignment and correction parts, and the positioning rods are also equipped with a clamping and fixing part.

[0008] Among them, a sliding block is slidably installed on the gantry beam, a mounting plate is installed on the left end of the sliding block, and a laser head is slidably installed on the left end of the mounting plate.

[0009] The alignment and correction part includes symmetrically opened limiting holes at the upper end of the positioning rod. A connecting plate is slidably installed on the inner wall of the limiting hole. The connecting plate is a rectangular plate structure with a rectangular sliding hole in the middle. Correction groups are set on both the front and rear positioning rods.

[0010] The clamping and fixing part includes a ventilation chamber located in the middle of the end of the positioning rod facing the negative pressure suction cup. A limit plate is slidably installed on the inner wall of the ventilation chamber by a compression spring. The end of the limit plate facing the negative pressure suction cup is rounded, and a push bar that slides against the upper end of the cutting worktable is installed in the middle of the lower end of the limit plate.

[0011] Furthermore, the machine tool is symmetrically equipped with slide rails at both ends, and electric sliders are installed at both ends of the positioning rod. The electric sliders are slidably mounted on the corresponding slide rails. The positioning rod has an L-shaped structure, and the horizontal section of the positioning rod is rounded.

[0012] Furthermore, the alignment and correction part also includes a slide rail two installed at the upper end of the positioning rod. Electric slider two is symmetrically slidably installed on the slide rail two. The lower end of the electric slider two is fixedly connected to the corresponding connecting plate, and a limiting slide rod that slides through the connecting plate is installed on the lower side of the inner wall of the limiting hole.

[0013] Furthermore, the clamping and fixing part also includes an air pipe that is symmetrically connected to the left and right sides of the end of the positioning rod away from the negative pressure suction cup, and the positioning rod and the limiting plate are jointly provided with an air blowing group.

[0014] Furthermore, the correction assembly includes guide holes symmetrically opened on the left and right sides of the positioning rod facing the negative pressure suction cup. The guide holes are composed of arc-shaped holes and horizontal holes. The side of the arc-shaped hole away from the limiting plate is higher than the side close to the limiting plate. The guide holes are connected to the corresponding limiting holes. A support shaft is slidably installed on the inner wall of the guide holes. A mating plate is slidably installed on the inner wall of the bottom end of the rectangular sliding hole through a tension spring. The mating plate is fixedly sleeved on the outer wall of the support shaft.

[0015] Furthermore, the correction assembly also includes an alignment plate installed at the end of the support shaft away from the connecting plate. A pressure strip is installed at the end of the alignment plate facing the limiting plate. A storage groove is opened at the opposite ends of two adjacent alignment plates. An adjustment rod is installed at the opposite ends of two adjacent alignment plates. The storage grooves and adjustment rods on the two adjacent alignment plates are designed to be staggered vertically. The outer wall of the adjustment rod is slidably connected to the inner wall of the corresponding storage groove.

[0016] Furthermore, the air blowing assembly includes an air tube 2 connected to the middle of the end of the positioning rod away from the negative pressure suction cup. The end of the limiting plate away from the negative pressure suction cup has a receiving cavity, which is composed of a rectangular groove and air holes. The air holes and the corresponding air tube 2 are connected by a telescopic hose. The outer wall of the rounded corner structure of the limiting plate has several linearly and evenly distributed injection holes, which are connected to the corresponding receiving cavities.

[0017] Furthermore, the upper part of the machine tool is provided with waist-shaped grooves on both the left and right sides of the cutting worktable, and waist-shaped sliders are symmetrically installed on the lower end of the positioning rod. The waist-shaped sliders are slidably connected to the inner wall of the corresponding waist-shaped groove.

[0018] The technical solution provided by this invention has the following advantages compared with the prior art:

[0019] This invention provides a laser cutting device for a liquid-cooled module cover plate with an automatic alignment and correction structure. During the lateral angle correction stage of the liquid-cooled cover plate, based on the skew data of the cover plate, the two electric sliders on the positioning rod are controlled to slide synchronously or differentially along the slide rail. This controls the two alignment plates on both sides to approach the negative pressure suction cup, ensuring they simultaneously and smoothly adhere to the side wall of the liquid-cooled cover plate. The lower end face of the pressure strip on the alignment plate also moves and adheres to the upper end face of the liquid-cooled cover plate. Through independent differential control of the two sets of electric sliders, precise lateral angle correction of the liquid-cooled cover plate can be achieved, avoiding the limitations of traditional double-sided fixed clamping. The positioning fixture addresses the issues of insufficient positioning accuracy and poor flexibility when clamping and limiting large-sized thin-walled liquid-cooled module cover plates. It completely solves the problems of traditional positioning methods being unable to correct liquid-cooled cover plate skewing and having low alignment accuracy, significantly improving the alignment accuracy of the liquid-cooled cover plate and ensuring the form and position tolerance requirements of laser cutting. Furthermore, when cleaning the upper part of the cutting worktable is required, the alignment plate and the push bar can thoroughly clean the upper surface of the cutting worktable during the reciprocating sliding process, scraping away residual cutting debris and impurities, further ensuring the flatness and alignment accuracy of the liquid-cooled cover plate.

[0020] During the rigid locking and negative pressure adsorption fixing stage of the liquid-cooled cover plate in the front-to-back direction, after the liquid-cooled cover plate completes precise alignment and correction, an external air pump inputs compressed air into the ventilation chambers on the corresponding positioning rods through air pipes on both the front and back sides. This pushes the limiting plate further forward towards the liquid-cooled cover plate, forming a high-strength rigid clamping and locking on the front and back sides of the liquid-cooled cover plate, completely restricting the translational freedom of the liquid-cooled cover plate in the front-to-back direction. Then, the negative pressure suction cup is controlled to form a high-strength, full-area negative pressure adsorption force on the lower end face of the liquid-cooled cover plate through the internal negative pressure channel, tightly adsorbing and fixing the liquid-cooled cover plate to the upper end face of the cutting worktable, completely restricting the liquid cooling... The cover plate's planar rotation and vertical movement freedom are achieved through a two-stage positioning and fixing method consisting of elastic pre-positioning and pneumatic rigid locking. This convenient positioning and calibration process not only avoids deformation of the liquid-cooled cover plate caused by direct rigid clamping, but also achieves high-strength rigid locking of the liquid-cooled cover plate from all four sides, ensuring that there is no displacement or vibration of the liquid-cooled cover plate during the cutting process. This significantly improves the stability of the processing and indirectly enhances the batch consistency of the liquid-cooled cover plate. It also avoids serious quality and safety hazards caused by human error, such as cover plate hole offset and contour deviation, which could lead to sealing failure and coolant leakage after the liquid-cooled module is assembled. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure in an embodiment of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the machine tool, cutting worktable, and gantry beam in an embodiment of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram showing the separation of the positioning rod, the alignment and correction part, and the clamping and fixing part in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of a three-dimensional partial cross-section of the alignment and correction part in an embodiment of the present invention;

[0026] Figure 5 This is a three-dimensional structural diagram of the positioning rod and the electric slider in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of a partial three-dimensional cross-section of the positioning rod and the clamping fixing part in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of a partial three-dimensional cross-section of the positioning rod and the alignment and correction part in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of a partial three-dimensional cross-section of the limiting plate in an embodiment of the present invention.

[0030] The labels in the diagram represent: 1. Machine tool; 11. Slide rail one; 2. Cutting worktable; 3. Gantry beam; 31. Slide seat; 32. Mounting plate; 33. Laser head; 4. Positioning rod; 41. Electric slider one; 5. Alignment and correction part; 51. Slide rail two; 52. Electric slider two; 53. Limiting hole; 54. Connecting plate; 55. Limiting slide rod; 56. Correction group; 561. Guide hole; 562. Support shaft; 563. Mating plate; 564. Alignment plate; 565. Pressure strip; 566. Storage groove; 567. Adjusting rod; 6. Tightening and fixing part; 61. Ventilation chamber; 62. Limiting plate; 63. Push strip; 64. Air pipe one; 65. Air blowing group; 651. Air pipe two; 652. Telescopic hose; 653. Spray hole; 654. Receiving cavity; 7. Negative pressure suction cup. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to embodiments.

[0033] Example:

[0034] Please see Figures 1-8 This invention provides a technical solution: a laser cutting device for a liquid-cooled module cover plate with an automatic alignment and correction structure, comprising:

[0035] A machine tool 1 with a cutting worktable 2 installed at the top, a negative pressure suction cup 7 installed through the middle of the cutting worktable 2, a gantry beam 3 slidably installed on the machine tool 1, and a positioning rod 4 symmetrically slidably installed at the top of the machine tool 1. The two positioning rods 4 are provided with a common alignment and correction part 5, and the positioning rod 4 is also provided with a clamping and fixing part 6.

[0036] Among them, a sliding block 31 is slidably installed on the gantry beam 3, a mounting plate 32 is installed on the left end of the sliding block 31, and a laser head 33 is slidably installed on the left end of the mounting plate 32.

[0037] The alignment and correction part 5 includes a limiting hole 53 symmetrically opened on the left and right sides at the upper end of the positioning rod 4. The limiting hole 53 is rectangular. A connecting plate 54 is slidably installed on the inner wall of the limiting hole 53. The connecting plate 54 is a rectangular plate structure with a rectangular sliding hole in the middle. The front and rear positioning rods 4 are jointly provided with a correction group 56.

[0038] The clamping and fixing part 6 includes a ventilation cavity 61 located in the middle of the end of the positioning rod 4 facing the negative pressure suction cup 7. The ventilation cavity 61 is rectangular. A limit plate 62 is slidably installed on the inner wall of the ventilation cavity 61 by a compression spring. The end of the limit plate 62 facing the negative pressure suction cup 7 is rounded. A push bar 63 is installed at the middle of the lower end of the limit plate 62, which slides against the upper end of the cutting worktable 2.

[0039] The machine tool 1 has slide rails 11 symmetrically installed at both ends. The positioning rod 4 has electric sliders 41 installed at both ends. The electric sliders 41 are slidably installed on the corresponding slide rails 11. The positioning rod 4 has an L-shaped structure and the horizontal section of the positioning rod 4 is rounded.

[0040] The alignment and correction part 5 also includes a slide rail 51 installed on the upper end of the positioning rod 4. Electric sliders 52 are symmetrically slidably installed on the slide rail 51. The lower end of the electric sliders 52 is fixedly connected to the corresponding connecting plate 54, and a limiting slide rod 55 that slides through the connecting plate 54 is installed on the lower side of the inner wall of the limiting hole 53.

[0041] The clamping and fixing part 6 also includes an air pipe 64 that is symmetrically connected to the left and right sides of the end of the positioning rod 4 away from the negative pressure suction cup 7. An air blowing assembly 65 is provided on the positioning rod 4 and the limiting plate 62.

[0042] The correction assembly 56 includes guide holes 561 symmetrically opened on the left and right sides of the positioning rod 4 facing the negative pressure suction cup 7. The guide holes 561 are composed of arc-shaped holes and horizontal holes. The side of the arc-shaped hole away from the limiting plate 62 is higher than the side close to the limiting plate 62. The guide holes 561 are connected to the corresponding limiting holes 53. A support shaft 562 is slidably installed on the inner wall of the guide holes 561. A mating plate 563 is slidably installed on the inner wall of the bottom end of the rectangular sliding hole through a tension spring. The mating plate 563 is fixedly sleeved on the outer wall of the support shaft 562.

[0043] The correction assembly 56 also includes an alignment plate 564 installed at the end of the support shaft 562 away from the connecting plate 54. A pressure strip 565 is installed at the end of the alignment plate 564 facing the limiting plate 62. A storage groove 566 is opened at the opposite ends of two adjacent alignment plates 564. An adjustment rod 567 is installed at the opposite ends of two adjacent alignment plates 564. The storage grooves 566 and adjustment rods 567 on the two adjacent alignment plates 564 are designed to be staggered vertically. The outer wall of the adjustment rod 567 is slidably connected to the inner wall of the corresponding storage groove 566.

[0044] The air blowing assembly 65 includes an air tube 651 connected to the middle of the end of the positioning rod 4 away from the negative pressure suction cup 7. The limiting plate 62 has a receiving cavity 654 at the end away from the negative pressure suction cup 7. The receiving cavity 654 is composed of a rectangular groove and air holes. The air holes and the corresponding air tube 651 are connected by a telescopic hose 652. The outer wall of the rounded corner structure of the limiting plate 62 has several linearly and evenly distributed injection holes 653. The injection holes 653 are connected to the corresponding receiving cavities 654.

[0045] The upper end of the machine tool 1 is provided with waist-shaped sliding grooves on both the left and right sides of the cutting worktable 2. The lower end of the positioning rod 4 is symmetrically equipped with waist-shaped sliders, which are slidably connected to the inner wall of the corresponding waist-shaped sliding groove.

[0046] In practice:

[0047] First, the alignment and correction part 5 in this application is used to correct the angle of the liquid-cooled cover plate in the left and right directions, and the clamping and fixing part 6 is used to elastically abut and position the liquid-cooled cover plate in the front and back directions. Then, the abutment and positioning effect is strengthened. It should be noted that air pipe 1 64 and air pipe 2 651 are respectively connected to air pumps. The gantry beam 3 can slide back and forth along the machine tool 1. The slide block 31 can slide back and forth along the gantry beam 3. The mounting plate 32 can drive the laser head 33 to slide up and down along the slide block 31. This is prior art and will not be described in detail here. In addition, the cutting worktable 2 in this application preferably adopts a honeycomb plate type worktable. The positioning end faces of the alignment plate 564, pressure strip 565, limit plate 62 and push strip 63 all need to be pasted with silicone buffer pads.

[0048] During the loading stage of the liquid-cooled cover plate to be processed, in the initial state, the gantry beam 3 is controlled to slide to the right end of the machine tool 1 to standby position. The slide block 31 slides along the gantry beam 3 to the initial zero position, and the laser head 33 rises along the mounting plate 32 to the highest safe stroke position. The front and rear positioning rods 4 are controlled to slide away from each other along the slide rail 11 until they are respectively at the maximum distance position, reserving sufficient operating space for the loading and unloading of the liquid-cooled cover plate to be processed. At this time, the two adjacent front and rear alignment plates 564 are in a state of moving away from each other. During the process of the front and rear positioning rods 4 moving away from each other, the adjusting rods 5 on the front and rear alignment plates 564... 67 will perform adaptive sliding compensation along the inner wall of the corresponding storage groove 566. During this period, the two front and rear alignment plates 564 can be maintained in a connected state through the upper and lower adjustment rods 567. It should be noted that the design of the adjustment rods 567 on the front and rear alignment plates 564, in conjunction with the two front and rear positioning rods 4, can also adapt to liquid-cooled cover plates of different widths and lengths, increasing the applicability of laser cutting equipment and meeting the production needs of liquid-cooled cover plates for multiple varieties, small batches, and rapid iteration. This avoids the problems of time-consuming and inefficient tooling changes and manual calibration required for conventional positioning and fixing mechanisms.

[0049] Next, the two electric sliders 52 need to be controlled to slide away from each other along the slide rail 51 until they are located at the left and right ends of the machine tool 1 respectively. The electric sliders 52 will drive the connecting plate 54 and the correction group 56 to move synchronously to the standby positions on the left and right sides of the machine tool 1, ensuring that the alignment plates 564 on the front and rear support shafts 562 are in an open state that is far apart from each other. Since the guide hole 561 is composed of an arc-shaped hole and a horizontal hole, the side of the arc-shaped hole away from the limiting plate 62 is higher than the side close to the limiting plate 62. At this time, the alignment plate 564 Located on the higher side of the arc-shaped hole, it also provides sufficient operating space for loading and unloading the liquid-cooled cover plate to be processed; and the ventilation cavity 61 is initially in a state where no compressed air is introduced. Under the action of the compression spring, the outer wall of the structure with rounded corners on the limiting plate 62 will be aligned with the outer wall of the structure with rounded corners on the positioning rod 4. Then, the liquid-cooled cover plate to be processed is placed stably on the upper surface of the negative pressure suction cup 7 in the middle of the cutting worktable 2 by means of robotic arm picking and placing or manual placement, thus completing the initial loading and placement of the liquid-cooled cover plate.

[0050] During the pre-positioning and elastic clamping stage of the liquid-cooled cover plate in the front and rear directions, after the material loading is completed, the two sets of electric sliders 41 are controlled to slide synchronously along the slide rail 11 and move closer to each other. The two sets of electric sliders 41 will drive the two positioning rods 4 to move closer to each other synchronously. During this period, the waist-shaped slider at the lower end of the positioning rod 4 will make adaptive sliding compensation along the inner wall of the corresponding waist-shaped slide groove. As the two positioning rods 4 move closer to each other, the two limiting plates 62 will first slide and fit against the upper surface of the liquid-cooled cover plate to prevent the liquid-cooled cover plate from warping at the edges during the pre-positioning process. Until the pushing strips 63 on the two limiting plates 62 contact the front and rear ends of the liquid-cooled cover plate respectively, the compression springs on the limiting plates 62 will be subjected to the squeezing force of the liquid-cooled cover plate. As the liquid cooling cover plate transitions from its natural state to its compressed state, the limiting plate 62 will adaptively retract into the corresponding venting chamber 61. Simultaneously, under the elastic force of the compression spring, the two limiting plates 62 will drive the corresponding push strips 63 to form a uniform elastic resistance against the front and rear side walls of the liquid cooling cover plate. This will simultaneously drive the liquid cooling cover plate to adaptively slide and compensate in the front-back direction until it moves to the center reference position of the cutting worktable 2, thus completing the pre-positioning of the liquid cooling cover plate in the front-back direction. During this process, the push strips 63 at the lower end of the limiting plate 62 will slide synchronously with the positioning rod 4, always closely adhering to the side wall of the liquid cooling cover plate. Furthermore, the end of the limiting plate 62 facing the negative pressure suction cup 7 is rounded to prevent rigid scraping between the limiting plate 62 and the liquid cooling cover plate, which would affect the quality of the finished liquid cooling cover plate.

[0051] In the left-right angle correction stage of the liquid cooling cover, after the pre-positioning of the liquid cooling cover in the front-back direction is completed, the deviation between the actual position of the liquid cooling cover and the preset reference position is obtained by external visual detection or position sensor. Based on the tilt data of the liquid cooling cover, the two electric sliders 52 on the left and right of the positioning rod 4 are controlled to slide synchronously or differentially along the slide rail 51.

[0052] Specifically, when an angular deviation of the liquid cooling cover plate in the left-right direction is detected (i.e., the left and right sidewalls of the liquid cooling cover plate are not parallel to the equipment reference axis), the two electric sliders 52 on the front and rear sides of the corresponding deviation direction are activated first. The two electric sliders 52 on this side will drive the corresponding connecting plate 54 to slide at a constant speed along the corresponding limiting slide rod 55 towards the negative pressure suction cup 7. The two connecting plates 54 on this side will drive the corresponding support shaft 562 to move synchronously through the corresponding mating plate 563. Under the forced guidance of the inclined trajectory of the guide hole 561, as the support shaft 562 slides horizontally, the support shaft 562 will drive the corresponding alignment plate 564 to move synchronously along the inclined path of the guide hole 561 towards the negative pressure suction cup 7, thus completing the process. The vertical downward displacement causes the alignment plate 564 on the support shaft 562 to move downward synchronously. As the electric slider 52 continues to feed, the lower end face of the alignment plate 564 will eventually slide and adhere to the upper end face of the cutting table 2, completing the switching of the alignment plate 564 from a high-position avoidance state to a low-position adherence working state. At this time, the ends of the two alignment plates 564 on this side that are close to the negative pressure suction cup 7 will simultaneously and smoothly adhere to the side wall of the liquid cooling cover. The lower end face of the pressure strip 565 on the alignment plate 564 will also move and adhere to the upper end face of the liquid cooling cover. During this period, the liquid cooling cover will be corrected on one side after being pushed by the two alignment plates 564, and adaptive sliding compensation will be performed on the upper end of the cutting table 2 and the negative pressure suction cup 7.

[0053] Next, the two electric sliders 52 on the other side drive the corresponding connecting plates 54 to slide at a constant speed along the corresponding limiting slide rods 55 towards the negative pressure suction cup 7. The two connecting plates 54 on the other side will also drive the corresponding support shafts 562 to move synchronously through the corresponding mating plates 563. Under the forced guidance of the inclined trajectory of the guide hole 561, the two support shafts 562 on the other side will also drive the corresponding alignment plates 564 to move synchronously along the inclined path of the guide hole 561 towards the negative pressure suction cup 7, while completing the vertical downward displacement action. This will drive the alignment plates 564 on the support shafts 562 to move synchronously downward. As the electric sliders 52 continue to feed, the lower end face of the alignment plate 564 will eventually slide against the upper end face of the cutting table 2, completing the transformation of the alignment plate 564 from a high-level avoidance state to a lowered state. During the switching to the low-position bonding working state, the two front and rear alignment plates 564 on the other side, which are close to the negative pressure suction cup 7, will also be smoothly bonded to the side wall of the other side of the liquid-cooled cover plate. The lower end face of the pressure strip 565 on the alignment plate 564 will also be movably bonded to the upper end face of the liquid-cooled cover plate. During this period, the liquid-cooled cover plate will be subjected to the pushing force of the two front and rear alignment plates 564 on the other side, and its tilt angle will be corrected. Adaptive sliding compensation will be performed on the upper end of the cutting worktable 2 and the negative pressure suction cup 7. Through the joint action of the left and right alignment plates 564 against the left and right side walls of the liquid-cooled cover plate, a uniform opposing pushing force is formed, thereby achieving the joint correction of the tilt angle of the liquid-cooled cover plate, so that both ends of the liquid-cooled cover plate are completely parallel to the reference axis of the equipment, and at the same time, the liquid-cooled cover plate is pushed to the center reference position of the cutting worktable 2 in the left and right direction.

[0054] It should be noted that during the process of the two positioning rods 4 approaching each other, the adjusting rods 567 on the two alignment plates 564 will perform adaptive sliding compensation along the inner wall of the corresponding storage groove 566. Through the independent differential control of the two sets of electric sliders 52, the angle of the liquid cooling cover plate in the left and right directions can be accurately corrected. This avoids the problems of insufficient positioning accuracy and poor flexibility when using traditional double-sided fixed clamping and limiting fixtures to clamp and limit large-size thin-walled liquid cooling module covers. It completely solves the problem that traditional positioning methods cannot correct the tilt of the liquid cooling cover plate and have low alignment accuracy, greatly improving the alignment accuracy of the liquid cooling cover plate and ensuring the form and position tolerance requirements of laser cutting. Moreover, when it is necessary to clean the upper end of the cutting worktable 2, the alignment plate 564 and the push bar 63 can thoroughly clean the table surface of the upper end of the cutting worktable 2 during the reciprocating sliding process of the cutting worktable 2, scraping off the remaining cutting debris and impurities on the table surface, further ensuring the flatness and alignment accuracy of the liquid cooling cover plate.

[0055] During the rigid locking and negative pressure adsorption fixing stage of the liquid cooling cover plate in the front and rear directions, after the liquid cooling cover plate completes the precise alignment and correction work, an external air pump inputs compressed air into the ventilation chamber 61 on the corresponding positioning rod 4 through the air pipes 64 on both the front and rear sides. Under the pressure of the compressed air, the limiting plates 62 on both the front and rear sides will overcome the reaction force of the compression spring and further apply pressure to the end of the limiting plate 62 closer to the liquid cooling cover plate, pushing the limiting plate 62 to advance further in the direction closer to the liquid cooling cover plate, forming a high-strength rigid clamping and locking on the front and rear sides of the liquid cooling cover plate, completely restricting the translational freedom of the liquid cooling cover plate in the front and rear directions; then, the negative pressure suction cup 7 is controlled to press against the liquid cooling cover plate through the internal negative pressure channel. The lower end face forms a high-intensity, full-area negative pressure adsorption force, which tightly adsorbs and fixes the liquid-cooled cover plate to the upper end face of the cutting worktable 2, completely restricting the plane rotation and vertical movement freedom of the liquid-cooled cover plate. This allows the lower end face of the liquid-cooled cover plate to be completely in contact with the cutting worktable 2, ensuring the processing flatness of the liquid-cooled cover plate and avoiding problems such as laser focus shift and uneven cutting surface caused by warping of the liquid-cooled cover plate during the cutting process. At the same time, the electric slider 52 of the alignment and correction part 5 remains locked, and several alignment plates 564 will continuously form rigid limits on the left and right side walls of the liquid-cooled cover plate, completely restricting the translational freedom of the liquid-cooled cover plate in the left and right directions, and finally achieving full constraint fixation of the liquid-cooled cover plate in six degrees of freedom.

[0056] The system employs a two-stage positioning and fixing method, combining elastic pre-positioning and pneumatic rigid locking. This method facilitates positioning and calibration, preventing deformation of the liquid-cooled cover plate caused by direct rigid clamping. Furthermore, it achieves high-strength rigid locking of the liquid-cooled cover plate from all four sides, ensuring no displacement or vibration during the cutting process. This significantly improves the stability of the processing and indirectly enhances batch consistency of the liquid-cooled cover plate. It also prevents serious quality and safety hazards caused by human error, such as cover plate hole misalignment or out-of-tolerance contours, which could lead to sealing failure and coolant leakage after liquid-cooled module assembly.

[0057] It should be noted that, because liquid cooling cover plates require the machining of sealing grooves, flow channel docking holes, and mounting positioning surfaces, there are micron-level requirements for surface roughness and flatness. Furthermore, most liquid cooling cover plates undergo pre-treatment such as anodizing and nickel plating. If molten slag adheres, it will directly damage the plating, forming irreversible protrusions. This leads to poor sealing and coolant leakage during subsequent assembly, rendering the plate unusable. When an external air pump inputs compressed air into the ventilation chamber 61 on the corresponding positioning rod 4 through air pipes 64 on both the front and rear sides, compressed air also needs to be input into air pipes 651 on both the front and rear sides through the external air pump. The compressed air will then pass sequentially through the telescopic hose 652 and the receiving cavity 654. The liquid metal is ejected from several injection holes 653 into the laser cutting area at the upper end of the liquid-cooled cover plate. This complements the coaxial downward auxiliary gas on the laser head 33, precisely suppressing thermal deformation during cutting. The coaxial gas is mainly responsible for blowing the liquid metal in the molten pool downward out of the cut, while the combined air blowing from several injection holes 653 on the limiting plate 62 can form a fully covered transverse protective air curtain on the upper surface of the liquid-cooled cover plate. This directly blows away the high-temperature molten slag that splashes in all directions during the cutting process, completely blocking the path of the molten slag to the upper surface of the liquid-cooled cover plate. This achieves zero molten slag adhesion and zero plating damage on the upper surface of the liquid-cooled cover plate, eliminating the need for subsequent grinding, pickling, and other repair processes, and significantly improving the pass rate of the sealing surface processing.

[0058] During the laser cutting process, once the liquid-cooled cover plate is fully constrained and fixed, it can move linearly along the X-axis of the machine tool 1 via the gantry beam 3, move linearly along the Y-axis of the slide block 31, and move vertically along the Z-axis of the mounting plate 32. Through the coordinated operation of the X / Y / Z axes, the laser head 33 moves precisely along the preset cutting trajectory. At the same time, the laser generator of the equipment is started, and the laser head 33 outputs a focused high-energy laser beam to perform processing operations such as irregular hole processing and flow channel grooving on the liquid-cooled module cover plate. During the laser cutting process, the negative pressure suction cup 7 maintains a continuous adsorption state, and the alignment and correction part 5 and the clamping and fixing part 6 remain locked throughout the process to ensure that the liquid-cooled cover plate does not loosen or shift.

[0059] During the reset and liquid-cooled cover plate unloading stage, the laser head 33 first rises along the mounting plate 32 to the highest safe travel position, and the slide block 31 and the gantry beam 3 synchronously return to the initial standby position, so that the core processing component is completely separated from the processed liquid-cooled cover plate, eliminating the risk of interference; the external air pump is controlled to stop inputting compressed air into the corresponding ventilation chamber 61 and the receiving chamber 654, and the ventilation chamber 61 is depressurized to atmospheric pressure, so that the limit plate 62 will release the rigid lock on the liquid-cooled cover plate in the front and back directions; then, the electric sliders 52 on the left and right sides are controlled to drive the corresponding connecting plates 54 and support shafts 562 to return to the standby positions at the left and right ends of the machine tool 1, respectively. 62 slides back to the upper high position along the guide hole 561, driving the corresponding alignment plate 564 to rise synchronously, forming a clearance with the cutting worktable 2, completely releasing the left and right direction limit and bottom obstruction of the liquid-cooled cover plate; then control the negative pressure suction cup 7 to stop the negative pressure adsorption, releasing the adsorption fixation on the bottom of the liquid-cooled cover plate; finally, control the front and rear positioning rods 4 to move away from each other to the maximum opening position through the electric slider 41 on the front and rear sides, completely releasing the operating space of the liquid-cooled cover plate, and the operator or robot arm can smoothly remove the processed liquid-cooled module cover plate from the cutting worktable 2 to complete the unloading operation, and the equipment automatically enters the standby state for the next processing.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser cutting device for a liquid-cooled module cover plate with an automatic alignment and correction structure, characterized in that, include: A machine tool (1) with a cutting worktable (2) installed at the top, a negative pressure suction cup (7) is installed through the middle of the cutting worktable (2), a gantry beam (3) is installed on the machine tool (1) and a positioning rod (4) is symmetrically slidably installed at the top of the machine tool (1). The two positioning rods (4) are provided with a common alignment and correction part (5), and the positioning rod (4) is also provided with a clamping and fixing part (6). Among them, a sliding block (31) is slidably installed on the gantry beam (3) in the front and back, and an installation plate (32) is installed on the left end of the sliding block (31). A laser head (33) is slidably installed on the left end of the installation plate (32). The alignment and correction part (5) includes a limiting hole (53) symmetrically opened on the upper end of the positioning rod (4). A connecting plate (54) is slidably installed on the inner wall of the limiting hole (53). The connecting plate (54) is a rectangular plate structure with a rectangular sliding hole in the middle. The front and rear positioning rods (4) are jointly provided with a correction group (56). The clamping and fixing part (6) includes a ventilation cavity (61) located in the middle of the end of the positioning rod (4) facing the negative pressure suction cup (7). A limiting plate (62) is slidably installed on the inner wall of the ventilation cavity (61) by a compression spring. The end of the limiting plate (62) facing the negative pressure suction cup (7) is rounded. A pusher (63) with its lower end sliding against the upper end of the cutting worktable (2) is installed in the middle of the lower end of the limiting plate (62). The alignment and correction part (5) further includes a slide rail two (51) installed on the upper end of the positioning rod (4). Electric slider two (52) is symmetrically slidably installed on the slide rail two (51). The lower end of the electric slider two (52) is fixedly connected to the corresponding connecting plate (54), and a limiting slide rod (55) that slides through the connecting plate (54) is installed on the lower side of the inner wall of the limiting hole (53). The correction group (56) includes guide holes (561) symmetrically opened on the left and right sides of the end of the positioning rod (4) facing the negative pressure suction cup (7). The guide holes (561) are composed of arc-shaped holes and horizontal holes. The side of the arc-shaped hole away from the limiting plate (62) is higher than the side close to the limiting plate (62). The guide holes (561) are connected to the corresponding limiting holes (53). A support shaft (562) is slidably installed on the inner wall of the guide holes (561). A mating plate (563) is slidably installed on the inner wall of the bottom end of the rectangular sliding hole through a tension spring. The mating plate (563) is fixedly sleeved on the outer wall of the support shaft (562). The correction group (56) also includes an alignment plate (564) installed at the end of the support shaft (562) away from the connecting plate (54). A pressure strip (565) is installed at the end of the alignment plate (564) facing the limiting plate (62). A storage groove (566) is opened at the opposite end of two adjacent alignment plates (564). An adjustment rod (567) is installed at the opposite end of two adjacent alignment plates (564). The storage groove (566) and the adjustment rod (567) on the two adjacent alignment plates (564) are designed to be staggered. The outer wall of the adjustment rod (567) is slidably connected to the inner wall of the corresponding storage groove (566).

2. The liquid-cooled module cover plate laser cutting equipment with an automatic alignment structure according to claim 1, characterized in that: The machine tool (1) is symmetrically equipped with slide rails (11) at both ends. The positioning rod (4) is equipped with electric sliders (41) at both ends. The electric sliders (41) are slidably installed on the corresponding slide rails (11). The positioning rod (4) has an L-shaped structure and the horizontal section of the positioning rod (4) is rounded.

3. The liquid-cooled module cover plate laser cutting equipment with an automatic alignment structure according to claim 2, characterized in that: The clamping and fixing part (6) also includes an air pipe (64) that is symmetrically connected to the left and right sides of the end of the positioning rod (4) away from the negative pressure suction cup (7). An air blowing group (65) is provided on the positioning rod (4) and the limiting plate (62).

4. The liquid-cooled module cover plate laser cutting equipment with an automatic alignment structure according to claim 3, characterized in that: The air blowing assembly (65) includes an air tube 2 (651) connected to the middle of the end of the positioning rod (4) away from the negative pressure suction cup (7). The end of the limiting plate (62) away from the negative pressure suction cup (7) is provided with a receiving cavity (654). The receiving cavity (654) is composed of a rectangular groove and an air hole. The air hole and the corresponding air tube 2 (651) are connected by a telescopic hose (652). The outer wall of the rounded corner structure of the limiting plate (62) is provided with a number of linearly uniformly distributed spray holes (653). The spray holes (653) are connected to the corresponding receiving cavity (654).

5. The liquid-cooled module cover plate laser cutting equipment with an automatic alignment structure according to claim 3, characterized in that: The upper end of the machine tool (1) is provided with waist-shaped sliding grooves on both the left and right sides of the cutting worktable (2), and waist-shaped sliders are symmetrically installed on the lower end of the positioning rod (4). The waist-shaped sliders are slidably connected to the inner wall of the corresponding waist-shaped sliding groove.

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