A method and apparatus for forming liquid cooling pipes for AI servers

Abstract

This invention relates to the field of liquid cooling pipeline manufacturing technology, specifically a method and apparatus for forming liquid cooling pipelines for AI servers. The forming apparatus of this invention includes a base, comprising two sliding grooves and two guide grooves respectively opened on its inner side, with sliding seats slidably installed inside each of the two sliding grooves, and mounting seats fixedly provided on the top of the sliding seats; a workpiece conveying mechanism, including a swing assembly mounted on the top of the two mounting seats, a clamping assembly disposed at one end of the swing assembly, and an adjustment assembly disposed between the corresponding swing assembly and the clamping assembly; it also includes a cleaning area, a drying area, and a welding mechanism, which can simultaneously complete the conveying, cleaning, drying, insertion, and welding of liquid cooling pipe joints and corrugated pipes, realizing automated processing and improving production efficiency. The forming method of this invention includes cutting, CNC machining, cleaning, drying, and welding, which can improve the welding quality and welding efficiency of liquid cooling pipe joints and corrugated pipes.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling pipeline manufacturing technology, specifically a method and apparatus for forming liquid cooling pipelines for AI servers. Background Technology

[0002] With the continuous development of AI technology, the standards for forming liquid cooling pipes for AI servers are constantly improving, and the connection between corrugated pipes and joints has become a key focus of pipe forming, attracting extensive research. Laser welding technology, which uses a focused laser beam to bombard the workpiece and generate heat, is widely used due to its advantages such as low heat input, high welding efficiency, and the ability to form an integrated structure. It is extensively applied in fields such as automotive manufacturing, aerospace, electronics and micro-machining, energy, and medicine.

[0003] The prior art discloses Chinese Patent No. CN 117900720 B: a stainless steel pipe welding equipment, which discloses a support component and a welding part. The support component adjusts the entire device to a position coaxial with the steel pipe, thereby improving the welding accuracy. By setting a unique motion trajectory for the welding part, the weld can be made more aesthetically pleasing.

[0004] However, the existing technology still has certain drawbacks. In the process of use, stainless steel pipes need to be cleaned and dried before welding to ensure welding quality. The welding equipment needs to be used in conjunction with cleaning and drying equipment. Furthermore, secondary contamination of the weld surface is easily caused during transportation, which reduces production efficiency.

[0005] The prior art also discloses a Chinese patent with publication number CN 119820091 A: a welding process method to improve the corrosion resistance of 304 stainless steel welds, and discloses that by adjusting parameters such as the laser welding path and the scanning frequency of the galvanometer system, welds with excellent corrosion resistance were successfully prepared, realizing the successful welding of 304 stainless steel using laser.

[0006] However, the aforementioned existing technologies still have certain drawbacks. While they can improve the corrosion resistance of welded joints during use, the corrugated pipe thickness of the AI ​​server liquid cooling pipeline is only 0.18mm. When the corrugated pipe is laser welded to the liquid cooling pipe joint, the corrugated pipe weld joint is prone to deformation and bending, which greatly reduces the forming quality and mechanical properties of the liquid cooling pipeline. Summary of the Invention

[0007] The purpose of this invention is to provide a method and apparatus for forming liquid cooling pipelines for AI servers, so as to solve the problems mentioned in the background art.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] An AI server liquid cooling piping forming device, comprising,

[0010] The base has a cleaning area and a drying area that are sequentially distributed from the ends to the middle at both ends of the upper surface of the base. The two cleaning areas and the two drying areas are symmetrically arranged. A welding mechanism is provided in the middle of the upper surface of the base. A side plate is fixedly provided on the upper surface of the base.

[0011] The workpiece conveying mechanism includes two symmetrically arranged swing components, a clamping component disposed at one end of the swing components, an adjustment component disposed between the corresponding swing components and the clamping component, and a guide groove disposed on the side plate surface to guide the corresponding swing components to swing.

[0012] The swing assembly includes two collinear sliding grooves on the surface of the base, a slide block slidably connected inside the corresponding sliding groove, a mounting base fixed on the top of the slide block, and a round rod that movably passes through the mounting base. A cam is fixedly provided at one end of the round rod, and a straight rod that is movably inserted into the corresponding guide groove is fixedly provided on one side of the cam.

[0013] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming device of the present invention, the swing assembly further includes a ring block fixedly sleeved on the outside of the round rod and a support fixedly connected to the other end of the round rod, wherein the side of the ring block opposite to the cam is in contact with the surface of the mounting base.

[0014] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming device of the present invention, the guide groove includes a horizontal groove one, an inclined groove one, a horizontal groove two, an inclined groove two, a horizontal groove three, an inclined groove three, and a horizontal groove four that are sequentially connected from the end of the base to the middle.

[0015] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming device of the present invention, wherein: the first inclined groove is inclined downward between the first horizontal groove and the second horizontal groove, the second inclined groove is inclined upward between the second horizontal groove and the third horizontal groove, the third inclined groove is inclined downward and turning around between the third horizontal groove and the fourth horizontal groove, and the fourth horizontal groove is located at the midpoint of the first horizontal groove and the second horizontal groove in the vertical direction.

[0016] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming device of the present invention, the clamping assembly includes a disc suspended on the top of the support and a vertical shaft rotatably installed at the center of the support. One end of the vertical shaft is rotatably connected to the disc via a bearing. Four vertical plates are fixedly provided on the top of the disc in a ring. Each vertical plate has a clamping plate and an arc column on both sides. Two horizontal bars that movably pass through the corresponding vertical plates are fixedly connected between the clamping plates and the opposite sides of the arc columns. A spring is sleeved on the outside of the horizontal bar to fixally connect the vertical plate and the arc column.

[0017] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming device of the present invention, the adjustment component includes a support plate disposed between the disc and the support base, the support plate being movably sleeved on the outside of the vertical shaft, and a gear two fixedly sleeved on the outside of the vertical shaft and three vertical rods fixedly connected between the support plate and the support base are provided between the support plate and the support base, and a gear one meshing with the gear two is rotatably installed on the outside of each vertical rod through a bearing.

[0018] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming device of the present invention, a toothed ring is provided between the tray and the support, which meshes with three gears. Two frames are fixedly connected to the outside of the toothed ring, and an arc block is fixedly connected to the other end of each of the two frames. A limiting component is provided between the tray and the disc.

[0019] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming device of the present invention, a guiding mechanism is also provided in the middle of the inner side of the base. The guiding mechanism includes two base plates fixed on the inner side of the base. A cylinder is fixedly installed on the opposite side of the two base plates. A U-shaped strip is fixedly connected to one end of the telescopic end of the cylinder through the corresponding base plate. A pressure plate is fixedly connected to both ends of the U-shaped strip.

[0020] This invention also discloses a method for forming the joints and corrugated pipes of liquid cooling pipelines using the aforementioned AI server liquid cooling pipeline forming device, specifically including the following steps:

[0021] S1. Pre-treatment: Cut the corrugated pipe and CNC machine the liquid cooling pipe joint. After forming, both the corrugated pipe and the liquid cooling pipe joint are ultrasonically cleaned and dried.

[0022] S2. Welding and forming: The corrugated pipe and liquid cooling pipe joint are clamped using welding fixtures and then welded into shape using laser welding equipment.

[0023] As a preferred embodiment of the AI ​​server liquid cooling pipeline forming method of the present invention, in S1 the ultrasonic cleaning time is 30 min, the drying temperature is 100℃ and the holding time is 45 min, the thickness of the corrugated pipe is 0.18 mm, the power of the laser welding equipment in S2 is 1500W, and spot welding is first performed at the joint during formal welding. The laser welding process parameters during formal welding are as follows: welding speed is 40-60 mm / s, welding acceleration is 100 mm / s2, power is set to 8%, and frequency is 3000 Hz.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention utilizes a motor to drive a screw to rotate, causing two moving parts on the workpiece conveying mechanism that clamp the target workpiece to move towards each other. Guided by corresponding guide grooves, they sequentially pass through corresponding cleaning and drying zones, and finally enter the welding zone, completing the ultrasonic cleaning, drying, insertion, and welding of the liquid-cooled pipe joint and the bellows, thereby achieving automated processing and improving production efficiency.

[0026] 2. By setting a guiding mechanism, the present invention can use the movement of the pressure plate on the corresponding side to assist in controlling the straight rod to transition between the horizontal groove three and the horizontal groove four on the corresponding guide groove in the direction of movement, so as to ensure that the straight rod can be accurately turned.

[0027] 3. This invention utilizes the arc block that rotates with the toothed ring to squeeze the four arc columns on the clamping assembly, thereby achieving comprehensive ultrasonic cleaning and drying of the bellows and joints, and improving the overall quality of the finished liquid cooling pipeline.

[0028] 4. The AI ​​server liquid cooling pipe joint of the present invention has good weld formation, no surface defects or internal pores, good air tightness, and no leakage under helium leak detection. By designing a boss at the connection of the liquid cooling pipe joint to connect with the corrugated pipe, the problem of welding deformation caused by the thin wall of the corrugated pipe is solved by mechanical limiting, and the welding efficiency is greatly improved without affecting the welding formation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a partial structural schematic diagram of the present invention;

[0032] Figure 3 This is a schematic diagram of the workpiece conveying mechanism of the present invention;

[0033] Figure 4 This is an exploded view of the workpiece conveying mechanism of the present invention;

[0034] Figure 5 This is a schematic diagram of the guide groove structure of the present invention;

[0035] Figure 6 This is a process diagram of the swing component of the present invention moving from its initial position to the cleaning station;

[0036] Figure 7This is a process diagram of the oscillating component of the present invention moving from the cleaning station to the drying station;

[0037] Figure 8 This is a process diagram of the oscillating component of the present invention moving from the drying station to the welding station;

[0038] Figure 9 This is a schematic diagram of the drying zone structure of the present invention;

[0039] Figure 10 This is a schematic diagram of the guiding mechanism structure of the present invention;

[0040] Figure 11 This is a schematic diagram of the welding mechanism structure of the present invention;

[0041] Figure 12 This is a schematic diagram of the bellows joint of the present invention without a boss;

[0042] Figure 13 This is a schematic diagram of the structure of the bellows joint of the present invention with a boss.

[0043] The attached figures are labeled as follows: 1. Base; 2. Sliding groove; 3. Slide seat; 4. Mounting seat; 5. Workpiece conveying mechanism; 51. Swing assembly; 511. Round rod; 512. Ring block; 513. Cam; 514. Straight rod; 515. Support; 52. Clamping assembly; 521. Disc; 522. Vertical plate; 523. Clamping plate; 524. Horizontal rod; 525. Arc column; 526. Spring; 527. Vertical shaft; 53. Adjustment assembly; 531. Vertical rod; 532. Support plate; 533. Cylinder 1; 534. Gear ring; 535. Frame; 536. Arc block; 54. Guide groove; 541. 542. Horizontal groove 1; 543. Inclined groove 1; 544. Horizontal groove 2; 545. Horizontal groove 3; 546. Inclined groove 3; 547. Horizontal groove 4; 6. Cleaning area; 61. Cleaning tank; 62. Ultrasonic vibrating plate; 7. Drying area; 71. Cover frame; 72. Heating element; 73. Air cavity; 74. Circulating pump; 75. Air pipe; 8. Guide mechanism; 81. Base plate; 82. Cylinder 2; 83. U-shaped strip; 84. Pressure plate; 9. Welding mechanism; 91. Inclined platform; 92. Support plate; 93. Groove opening; 94. Cylinder 3; 95. Upper arc plate; 96. Lower arc plate; 97. Welding head. Detailed Implementation

[0044] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] The forming device of this invention belongs to the intelligent manufacturing equipment industry and is a part of laser welding equipment. It is used to simultaneously transport, clean, dry, insert, and weld liquid-cooled pipe joints and corrugated pipes to be welded, thereby improving production efficiency.

[0046] Refer to the instruction manual appendix Figures 1-5 As the first embodiment of the present invention, the present invention provides an AI server liquid cooling pipeline forming device, including a base 1, with a cleaning area 6 and a drying area 7 arranged sequentially from the end to the middle at both ends of the upper surface of the base 1, the two cleaning areas 6 and the two drying areas 7 being symmetrically arranged, a welding mechanism 9 being provided in the middle of the upper surface of the base 1, and a side plate being fixedly provided on the upper surface of the base 1.

[0047] The workpiece conveying mechanism 5 includes two symmetrically arranged swing components 51, a clamping component 52 disposed at one end of the swing component 51, an adjusting component 53 disposed between the corresponding swing component 51 and the clamping component 52, and a guide groove 54 disposed on the side plate surface to guide the corresponding swing component 51 to swing. Each swing component 51, clamping component 52 and adjusting component 53 on each mounting base 4 is a moving part, and the two moving parts can be used to convey the liquid-cooled pipe joint and the corrugated pipe to be welded respectively.

[0048] Two collinear sliding grooves 2 are provided on the upper surface of the base 1, and two guide grooves 54 are provided on the side plate surface. A screw driven by a motor is rotatably installed between the two sliding grooves 2. The screw has opposite thread directions on the outer side corresponding to the two sliding grooves 2. The slide blocks 3 slidably connected inside the two sliding grooves 2 are threaded onto the outer side of the screw. Through the opposite thread directions at both ends of the outer side of the screw, the rotating screw can drive the two slide blocks 3 to move in opposite directions. The mounting base 4 is fixedly installed on the top of the slide block 3.

[0049] Furthermore, the guide groove 54 includes a horizontal groove 1 541, an inclined groove 1 542, a horizontal groove 2 543, an inclined groove 2 544, a horizontal groove 3 545, an inclined groove 3 546, and a horizontal groove 4 547 that are sequentially connected from the end of the base 1 towards the middle. The adjacent sections that make up the guide groove 54 have a smooth transition. The inclined groove 1 542 is inclined downward between the horizontal groove 1 541 and the horizontal groove 2 543. The inclined groove 2 544 is inclined upward between the horizontal groove 2 543 and the horizontal groove 3 545. The inclined groove 3 546 is inclined downward with a turn between the horizontal groove 3 545 and the horizontal groove 4 547. The horizontal groove 4 547 is located at the midpoint of the horizontal groove 1 541 and the horizontal groove 2 543 in the vertical direction.

[0050] It should be noted that this invention utilizes a corresponding motor to drive the screw to rotate, thereby driving the two mounting bases 4 to move towards each other (as intended). Figure 1The state shown is the initial state. The movement causes the two moving parts on the workpiece conveying mechanism 5 to move in opposite directions. As the liquid-cooled pipe joint and the bellows to be welded move along the sliding groove 2, they pass through the corresponding cleaning zone and drying zone in sequence under the guidance of the corresponding guide groove 54, and finally enter the welding zone to complete the ultrasonic cleaning, drying, insertion and welding processes of the liquid-cooled pipe joint and the bellows. The cleaning zone 6 is set between the inclined groove 1 542 and the horizontal groove 2 543 in the initial state movement direction of the corresponding slide 3. The drying zone 7 is set between the inclined groove 2 544 and the horizontal groove 4 547 in the initial state movement direction of the corresponding slide 3. The welding mechanism 9 is set at the central position between the two drying zones 7.

[0051] Furthermore, such as Figure 1 and Figures 3-8 As shown, the swing assembly 51 includes a round rod 511 that movably passes through the corresponding mounting base 4. A ring block 512 and a cam 513 are fixedly sleeved on the outer side of the round rod 511, respectively fitting against both sides of the mounting base 4. The arrangement of the ring block 512 and the cam 513 ensures that the round rod 511 will not move axially. Furthermore, to reduce the frictional resistance experienced by the cam 513 during swinging, rolling balls can be provided on both the cam 513 and the side of the ring block 512 facing the mounting base 4. A straight rod 514 is fixedly provided on one side of the cam 513 and is movably inserted into the corresponding guide groove 54. The straight rod 514 is guided to move and swing through the corresponding guide groove 54, thereby adjusting the orientation of the workpiece (i.e., the liquid cooling pipe joint and the bellows to be welded, the same below) held on the clamping assembly 52. ​​A support 515 is fixedly connected to the end of the round rod 511 away from the cam 513. The movement trajectory of the round rod 511 is collinear with the horizontal groove 4 547 of the corresponding slide 3 in the initial state movement direction.

[0052] Furthermore, the clamping assembly 52 includes a disc 521 suspended on the top of the support 515 and a vertical shaft 527 rotatably mounted through the center of the support 515. One end of the vertical shaft 527 is rotatably connected to the disc 521 via a bearing, and the other end of the vertical shaft 527 is fixedly connected to the output shaft of a motor mounted on the support 515.

[0053] Four evenly distributed vertical plates 522 are fixedly mounted on the top of the disc 521. Each vertical plate 522 has a clamping plate 523 and an arc column 525 on both sides. The tops of the two opposing clamping plates 523 are flared to ensure that the workpiece can smoothly enter the clamping area of ​​the clamping assembly 52. ​​The clamping plates 523 can also be configured as circular holes to facilitate subsequent cleaning and drying processes. Two movable crossbars 524 are fixedly connected between the opposite sides of the clamping plates 523 and the arc columns 525, passing through the corresponding vertical plates 522. The outer side of the crossbars 524 is fitted with a fixed connection to the vertical plates 522. With the spring 526 of the arc column 525, when the spring 526 is in its natural state, the minimum distance between the opposite sides of the two clamping plates 523 that are set opposite each other is greater than the outer diameter of the workpiece. That is, in this state, the clamping plates 523 and the workpiece are set apart. The top of the disc 521 is also fixedly provided with a buffer airbag for limiting the workpiece inserted into the clamping area. The buffer airbag includes a frustum-shaped ring plate and a bulging area. An air pump for inflating and deflating the bulging area of ​​the buffer airbag is fixedly installed on the outside of the disc 521. The air pump is a diaphragm air pump of model D08L.

[0054] Furthermore, the adjustment assembly 53 includes a support plate 532 disposed between the disc 521 and the support 515. The support plate 532 is movably sleeved on the outside of the vertical shaft 527. Between the support plate 532 and the support 515, there is a gear two fixedly sleeved on the outside of the vertical shaft 527 and three vertical rods 531 fixedly connected between the support plate 532 and the support 515 in a ring-shaped evenly distributed manner. The arrangement of the vertical rods 531 can ensure that the relative position between the support 515 and the support plate 532 remains fixed. Each vertical rod 531 has a gear one that meshes with the gear two rotatably mounted on its outer side through a bearing.

[0055] A toothed ring 534, meshing with three gears, is provided between the support plate 532 and the support base 515. The movement trajectory of the toothed ring 534 can be limited by the three gears that rotate under the influence of the gears. The toothed ring 534 is driven to rotate by the three synchronously rotating gears. Two frames 535 are fixedly connected to the outer side of the toothed ring 534. An arc block 536 is fixedly connected to the other end of each frame 535. The central angle of the arc block 536 is greater than 90° and less than 135°, ensuring that the arc block 536 maintains at least one arc column 525 in compression contact during rotation with the toothed ring 534. The end of the arc block 536 in its rotation direction is an arc (see...). Figure 4This allows for better compression of the arc column 525 to push the clamping plate 523 to clamp the workpiece in the clamping area. In addition, a cylinder 533 is fixedly installed on the top of the support plate 532. The telescopic end of the cylinder 533 is fixedly connected to an anti-slip ring that is concentrically arranged with the vertical shaft 527. The bottom of the disc 521 has an annular groove that is directly opposite to the anti-slip ring. The anti-slip ring inserted into the annular groove can be used to limit the state of the disc 521 and prevent the disc 521 from rotating along with the vertical shaft 527 during rotation.

[0056] It should be noted that during the process of using the workpiece conveying mechanism 5 to transport the liquid-cooled pipe joint and the bellows to the welding station for welding, the corresponding motor drives the screw to rotate, and the rotating screw drives the two mounting seats 4 to move towards each other. During this process, as the mounting seats 4 and the corresponding slide seats 3 move along the direction of the sliding groove 2, the workpiece clamped by the clamping assembly 52 will undergo the following changes:

[0057] Process 1 (see) Figure 6 The straight rod 514 inserted into the corresponding guide groove 54 on the swing assembly 51 moves from the horizontal groove 1 541 in the moving direction to the horizontal groove 2 543. During this process, when the straight rod 514 rotates into the inclined groove 1 542 and moves along the inclined groove 1 542, the cam 513 will rotate 180° counterclockwise around the round rod 511 as the central axis under the guidance of the inclined groove 1 542. The clamping assembly 52 installed on the support 515 will also rotate synchronously with the cam 513. That is, the state of the clamped workpiece changes from vertical upward to vertical downward. After being guided by the inclined groove 1 542, the clamped workpiece will enter the cleaning area for cleaning. The effective cleaning area is the area where the horizontal groove 2 543 in the moving direction is located.

[0058] Process Two (see) Figure 7 The straight rod 514 inserted into the corresponding guide groove 54 on the swing assembly 51 moves from the horizontal groove 2 543 in the moving direction to the horizontal groove 3 545. During this process, the state change of the clamped workpiece is similar to that of process 1, except that the cam 513 rotates 180° clockwise around the round rod 511 as the central axis, so that the workpiece changes from a vertically downward state to a vertically upward state. During this process, the clamped workpiece will leave the cleaning area and enter the drying area. The effective drying area is the area where the horizontal groove 3 545 in the moving direction is located.

[0059] Process 3 (see) Figure 8The straight rod 514 inserted into the corresponding guide groove 54 on the swing assembly 51 moves from the horizontal groove 3 545 in the moving direction to the horizontal groove 4 547. During this period, the state change of the clamped workpiece is similar to process 2, except that the cam 513 continues to rotate 90° clockwise with the round rod 511 as the central axis, so that the workpiece deflects to the right from the vertical upward state to the horizontal state. During this process, the clamped workpiece will be removed from the drying area.

[0060] Process 4 (see Figure 8 The straight rod 514 inserted into the corresponding guide groove 54 on the swing assembly 51 moves along the horizontal groove 547 in the moving direction. During this time, the welding ends of the two workpieces to be welded are kept facing each other to complete the insertion, and the insertion position is allowed to enter the welding station to wait for welding.

[0061] In the above four processes, the screws rotate in the same direction in processes one, two, and four, while the screws rotate in the opposite direction in process three.

[0062] It should be further explained that during the process of the clamped workpiece entering the cleaning and drying areas for processing, cylinder 533 pushes the anti-slip ring into the annular groove at the bottom of the disc 521 and presses the disc 521 to prevent it from rotating. Then, the corresponding motor drives the vertical shaft 527 to rotate. The gear 2, which rotates synchronously with the vertical shaft 527, indirectly drives the gear ring 534 to rotate, and drives the arc block 536 to rotate synchronously with the gear ring 534. This drives the two sets of opposing clamping plates 523 to alternately contact and press against the workpiece surface. At the same time, after the workpiece is inserted into the clamping area, the air pump can be controlled to evacuate the buffer airbag, causing the bulging area of ​​the buffer airbag to contract, thereby ensuring the complete cleaning and drying of the clamped workpiece.

[0063] During the process of the clamped workpiece moving in opposite directions and entering the welding station, cylinder 533 pushes the anti-slip ring to disengage from the annular groove at the bottom of the disc 521. Then, during the welding process, the corresponding motor drives the vertical shaft 527 to rotate, and the gear 2, which rotates synchronously with the vertical shaft 527, indirectly drives the gear ring 534 to rotate. As the arc block 536, which rotates synchronously with the gear ring 534, is not restricted by the anti-slip ring during its rotation, the arc block 536, after contacting the arc column 525, will directly push the disc 521 to rotate under the restriction of the corresponding spring 526, thus realizing the annular welding.

[0064] Furthermore, such as Figures 1-2 As shown, the cleaning area 6 includes a cleaning tank 61 located inside the base 1. An ultrasonic transducer 62 is fixedly installed inside the cleaning tank 61. The ultrasonic transducer 62 is a KP-1012 model, which is suitable for cleaning precision parts.

[0065] It should be noted that the ultrasonic vibrating plate 62 is installed in a bottom-vibration manner. It utilizes the cavitation effect generated by ultrasonic waves in liquids, combined with high-frequency mechanical vibration and the physicochemical action of the cleaning medium, to achieve efficient removal and cleaning of dirt on the surface of objects.

[0066] Furthermore, such as Figure 1 and Figure 9 As shown, the drying zone 7 includes a cover frame 71 fixedly installed inside the base 1. An electric heating tube 72 is fixedly installed on the top of the inner side of the cover frame 71. Air cavities 73 are also opened at both ends of the cover frame 71. A circulation pump 74 connecting the two air cavities 73 is fixedly installed on the top of the cover frame 71. The circulation pump 74 is a miniature electric air pump of model VUY6002. Air pipes 75 connected to the corresponding air cavities 73 are installed at both ends of the inner side of the cover frame 71. The hot air inside the cover frame 71 is circulated and drawn in by the air pipes 75 at both ends of the inner side of the cover frame 71 to achieve full utilization of heat.

[0067] It should be noted that during the drying process of the workpiece after ultrasonic cleaning, on the one hand, the heat generated by the electric heating tube 72 is used to dry the workpiece, and on the other hand, the circulating pump 74 is used to circulate and draw the heated air inside the cover frame 71. This not only makes full use of the heat, but also reduces the energy waste caused by the overflow of hot air.

[0068] Furthermore, such as Figure 1 and Figure 11 As shown, the welding mechanism 9 includes an inclined platform 91 and a support plate 92 fixed inside the base 1. An upper arc plate 95 is fixedly connected to the end of the support plate 92. A slot 93 is opened in the middle of the inclined platform 91 corresponding to the position of the upper arc plate 95. A cylinder 94 is fixedly installed inside the slot 93. A lower arc plate 96 directly opposite the upper arc plate 95 is fixedly connected to the telescopic end of the cylinder 94. A welding head 97 is fixedly installed in the middle of the upper arc plate 95. The welding head 97 is a laser welding head in the prior art, which will not be described in detail here. In addition, an exhaust pipe can be connected to the upper arc plate 95 to extract the exhaust gas generated during laser welding in real time, so as to avoid the exhaust gas from escaping and causing environmental pollution during the unloading process of the lower arc plate 96.

[0069] It should be noted that during the welding process of the liquid cooling pipe structure and the bellows after the liquid cooling pipe joint and the bellows are connected, the joint formed by the two is located inside the cavity enclosed by the upper arc plate 95 and the lower arc plate 96 after they are engaged, and is exactly opposite to the welding head 97. Then, the workpiece held is rotated to complete the welding of the ring surface. After the welding is completed, the workpiece supported by the lower arc plate 96 is lowered by the cylinder 3 94, and the workpiece conveying mechanism 5 will be reset to the initial position to wait for the next round of conveying.

[0070] During the process of the workpiece being welded and descending under the control of the lower arc plate 96 support by the cylinder 3 94, the lower arc plate 96 will gradually retract into the groove 93, while the welded workpiece will be blocked by the inclined platform 91. After the welded workpiece leaves the lower arc plate 96, it will roll along the inclined platform 91 to the next process.

[0071] Refer to the instruction manual appendix Figure 2 and Figure 10 This is the second embodiment of the present invention. Unlike the first embodiment, the inner center of the base 1 is also provided with a guide mechanism 8. The guide mechanism 8 includes two base plates 81 fixed to the inner side of the base 1. A cylinder 82 is fixedly installed on the opposite side of the two base plates 81. A U-shaped strip 83 is fixedly connected to one end of the telescopic end of the cylinder 82 that passes through the corresponding base plate 81. A pressure plate 84 is fixedly connected to both ends of the U-shaped strip 83. The width of the pressure plate 84 is less than the length of the straight rod 514 extending to the outside of the guide groove 54, so as to ensure that the swinging cam 513 is not blocked by the components of the guide mechanism 8 when the mounting seat 4 moves to the welding station.

[0072] It should be noted that during the process of the straight rod 514 inserted into the corresponding guide groove 54 on the swing assembly 51 moving from the horizontal groove 3 545 to the horizontal groove 4 547 in the direction of movement (i.e., process three in the aforementioned embodiment A1), when the straight rod 514 is about to enter the inclined groove 3 546 from the horizontal groove 3 545 under the reverse rotation of the screw, the cylinder 2 82 located at the upper end will be controlled by the control end to push the U-shaped strip 83 downward, thereby driving the two corresponding pressure plates 84 to move downward synchronously, so as to push the straight rod 514 on the two conveying stations to smoothly turn into the inclined groove 3 546;

[0073] When the straight rod 514 is about to enter the horizontal groove 547 from the inclined groove 3 546 while the screw is rotating in the forward direction, the pressure plate 84 at the upper end moves down until its lower end face is flush with the upper side of the horizontal groove 547, so as to ensure that the straight rod 514 on the two conveying stations smoothly turns into the interior of the horizontal groove 547.

[0074] Conversely, during the process of resetting the workpiece conveying mechanism 5 to its initial state after the workpiece is welded, the straight rods on the two conveying stations are pushed smoothly from the horizontal groove 4 547 to the inside of the horizontal groove 3 545 by pushing the pressure plate 84 at the lower end. In this way, the smooth pushing and resetting of the workpiece conveying mechanism 5 can be ensured.

[0075] In the above technical solution, all the cylinders mentioned are single-acting cylinders of model DSA25N200.

[0076] Example 1: Based on the description of the AI ​​server liquid cooling pipeline forming device above, the present invention also provides an AI server liquid cooling pipeline forming method, wherein the liquid cooling pipeline is composed of a corrugated pipe and a liquid cooling pipe joint (see appendix to the specification). Figure 13 The material is 304 stainless steel, and the thickness of the corrugated pipe is 0.18mm. The specific operating steps are as follows:

[0077] S1. Pre-treatment: Cut the corrugated pipe and CNC machine the liquid cooling pipe joint. After forming, both the corrugated pipe and the liquid cooling pipe joint are ultrasonically cleaned and dried. The ultrasonic cleaning time is 30 minutes, and the drying temperature is 100℃ and kept at that temperature for 45 minutes.

[0078] S2. Welding and forming: The corrugated pipe and liquid cooling pipe joint are clamped using welding fixtures and then welded into shape using laser welding equipment. The laser welding equipment (i.e., the aforementioned welding head 97, the same below) has a power of 1500W. Before the formal welding, spot welding is performed on the joint. The laser welding process parameters during the formal welding are as follows: welding speed is 40mm / s, welding acceleration is 100mm / s2, power is set to 8%, frequency is 3000Hz, and the shielding gas is argon with a purity of 99.9%.

[0079] Comparative Example 1: Refer to Example B1, except that the liquid cooling pipe connector does not have a boss (see the appendix of the instruction manual). Figure 12 ).

[0080] Example 2: The difference from Example 1 is that the welding speed in the laser welding process parameters during the actual welding is 50 mm / s.

[0081] Comparative Example 2: Referring to Example 2, the difference is that the liquid cooling pipe joint connection does not have a boss.

[0082] Example 3: The difference from Example 2 is that the welding speed in the laser welding process parameters during the actual welding is 60 mm / s.

[0083] Comparative Example 3: Referring to Example 3, the difference is that the liquid cooling pipe joint connection does not have a boss.

[0084] The liquid cooling pipelines of AI servers in Examples 1-3 and Comparative Examples 1-3 were welded respectively. The laser welding process parameters are shown in Table 1.

[0085] Table 1 Laser Welding Process Parameters

[0086]

[0087] Further observation and ultimate tensile testing were conducted on the macroscopic surface of the weld seams after welding of the liquid cooling pipes of the AI ​​servers in Examples 1-3 and Comparative Examples 1-3. The ultimate tensile test was performed using a DZ-101-2T servo tensile testing machine. The observation and test results are shown in Table 2 below.

[0088] Table 2. Macroscopic surface observation and tensile test results of welds in Examples 1-3 and Comparative Examples 1-3.

[0089]

[0090] As can be seen from Examples 1-3 and Comparative Examples 1-3 in Table 2, with the change of welding speed, low heat input will lead to incomplete weld penetration, while high heat input will lead to weld burn-through. A comparison of Examples 1-3 and Comparative Examples 1-3 shows that the introduction of the boss in the liquid-cooled pipe joint can effectively prevent the bellows from bending, and achieves optimal ultimate tensile strength performance at a welding speed of 50 mm / s.

[0091] Compared with related technologies, the AI ​​server liquid cooling pipeline forming method provided by the present invention has the following beneficial effects:

[0092] This invention discloses a method for forming liquid cooling pipes for AI servers. The method uses a welding fixture to clamp the corrugated pipe and the liquid cooling pipe joint, and then welds them together using a laser welding device. By designing a boss at the connection of the liquid cooling pipe joint and adjusting the laser welding process parameters, the welding stability of the joint is improved, which greatly improves the forming efficiency of the liquid cooling pipes for AI servers and solves the problem of welding deformation of the corrugated pipe due to its small thickness.

[0093] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A liquid cooling pipeline forming device for an AI server, characterized in that, include: The base (1) has a cleaning area (6) and a drying area (7) arranged sequentially from the end to the middle on both ends of the upper surface of the base (1). The two cleaning areas (6) and the two drying areas (7) are arranged symmetrically. A welding mechanism (9) is provided in the middle of the upper surface of the base (1). A side plate is fixedly provided on the upper surface of the base (1). The workpiece conveying mechanism (5) includes two symmetrically arranged swing components (51), a clamping component (52) disposed at one end of the swing component (51), an adjustment component (53) disposed between the corresponding swing component (51) and the clamping component (52), and a guide groove (54) disposed on the side plate surface to guide the corresponding swing component (51) to swing. The swing assembly (51) includes two collinear sliding grooves (2) on the surface of the base (1), a slide block (3) slidably connected inside the corresponding sliding groove (2), a mounting seat (4) fixedly provided on the top of the slide block (3), and a round rod (511) that movably passes through the mounting seat (4). A cam (513) is fixedly provided at one end of the round rod (511), and a straight rod (514) that is movably inserted into the corresponding guide groove (54) is fixedly provided on one side of the cam (513).

2. The AI ​​server liquid cooling pipeline forming device according to claim 1, characterized in that, The swing assembly (51) also includes a ring block (512) fixedly sleeved on the outside of the round rod (511) and a support (515) fixedly connected to the other end of the round rod (511). The side of the ring block (512) opposite to the cam (513) is in contact with the surface of the mounting seat (4).

3. The AI ​​server liquid cooling pipeline forming device according to claim 1, characterized in that, The guide groove (54) includes a horizontal groove 1 (541), an inclined groove 1 (542), a horizontal groove 2 (543), an inclined groove 2 (544), a horizontal groove 3 (545), an inclined groove 3 (546), and a horizontal groove 4 (547) that are connected sequentially from the end of the base (1) to the middle.

4. The AI ​​server liquid cooling pipeline forming device according to claim 3, characterized in that, The inclined groove 1 (542) is inclined downward between horizontal groove 1 (541) and horizontal groove 2 (543), the inclined groove 2 (544) is inclined upward between horizontal groove 2 (543) and horizontal groove 3 (545), the inclined groove 3 (546) is inclined downward with a turning direction between horizontal groove 3 (545) and horizontal groove 4 (547), and the horizontal groove 4 (547) is located at the midpoint of horizontal groove 1 (541) and horizontal groove 2 (543) in the vertical direction.

5. The AI ​​server liquid cooling pipeline forming device according to claim 2, characterized in that, The clamping assembly (52) includes a disc (521) suspended on the top of the support (515) and a vertical shaft (527) rotatably mounted in a through manner at the center of the support (515). One end of the vertical shaft (527) is rotatably connected to the disc (521) via a bearing. The top of the disc (521) is fixedly provided with four vertical plates (522) evenly distributed in a ring. Each vertical plate (522) has a clamping plate (523) and an arc column (525) on both sides. Two horizontal bars (524) that move through the corresponding vertical plates (522) are fixedly connected between the clamping plates (523) and the arc column (525). A spring (526) that fixes the vertical plate (522) and the arc column (525) is sleeved on the outside of the horizontal bar (524).

6. The AI ​​server liquid cooling pipeline forming device according to claim 5, characterized in that, The adjustment assembly (53) includes a support plate (532) disposed between the disc (521) and the support (515). The support plate (532) is movably sleeved on the outside of the vertical shaft (527). Between the support plate (532) and the support (515), there is a gear two fixedly sleeved on the outside of the vertical shaft (527) and three vertical rods (531) fixedly connected between the support plate (532) and the support (515). Each vertical rod (531) has a gear one that meshes with the gear two rotatably mounted on its outside via a bearing.

7. The AI ​​server liquid cooling pipeline forming device according to claim 6, characterized in that, Between the pallet (532) and the support (515), there is a toothed ring (534) that meshes with all three gears. Two frames (535) are fixedly connected to the outside of the toothed ring (534). An arc block (536) is fixedly connected to the other end of each frame (535). A limiting component is provided between the pallet (532) and the disc (521).

8. The AI ​​server liquid cooling pipeline forming device according to claim 1, characterized in that, The base (1) is also provided with a guide mechanism (8) in the middle of the inner side. The guide mechanism (8) includes two base plates (81) fixed inside the base (1). Two cylinders (82) are fixedly installed on opposite sides of the two base plates (81). A U-shaped strip (83) is fixedly connected to one end of the telescopic end of the cylinder (82) that passes through the corresponding base plate (81). A pressure plate (84) is fixedly connected to both ends of the U-shaped strip (83).

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