AI server liquid cooling pipeline forming method and device

Abstract

The invention relates to the technical field of liquid cooling pipeline production, in particular to an AI server liquid cooling pipeline forming method and device.The forming device comprises a base table, the base table comprises two sliding grooves and two guiding grooves which are formed in the inner side of the base table, sliding bases are slidably installed in the two sliding grooves, and mounting bases are fixedly arranged at the tops of the sliding bases; the workpiece conveying mechanism comprises a swinging assembly mounted at the tops of the two mounting seats, a clamping assembly arranged at one end of the swinging assembly, and an adjusting assembly arranged between the corresponding swinging assembly and the clamping assembly; the liquid cooling pipe joint and corrugated pipe forming device further comprises a cleaning area, a drying area and a welding mechanism, conveying, cleaning, drying, inserting connection and welding of a liquid cooling pipe joint and a corrugated pipe can be synchronously completed, automatic machining is achieved, and the production efficiency is improved. The welding quality and the welding efficiency of the liquid cooling pipe joint and the corrugated pipe can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling pipeline production, and specifically to a method and device for forming liquid cooling pipelines for an AI server. Background Art

[0002] With the continuous development of aluminum technology, the forming standards of AI server liquid cooling pipes are constantly improving. The connection between bellows and joints, as a key focus of pipe forming, has attracted extensive research. Laser welding technology, a method that uses a focused laser beam as an energy source to generate heat from the weldment, is widely used due to its advantages such as low heat input, high welding efficiency, and the formation of an integrated structure. It is widely used in automotive manufacturing, aerospace, electronics and micromachining, energy, and medical fields.

[0003] The prior art discloses a Chinese patent with publication number CN 117900720 B: a stainless steel pipe welding device, which also discloses a support assembly and a welding part. The support assembly is used to adjust the entire device to a coaxial position with the steel pipe, thereby improving the welding accuracy, and by setting a unique motion trajectory of the welding part, the weld can be made more beautiful.

[0004] However, the above-mentioned existing technology still has certain defects. That is, during use, since the stainless steel pipe needs to be cleaned and dried before welding to ensure the welding quality, the welding equipment needs to be coordinated with the cleaning equipment and drying equipment. In addition, it is easy to cause secondary contamination of the weld surface during the transportation process, which reduces production efficiency.

[0005] The prior art also discloses a Chinese patent with publication number CN 119820091 A: A welding process method for improving 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, a weld with excellent corrosion resistance is successfully prepared, and 304 stainless steel is successfully welded using laser.

[0006] However, the above-mentioned existing technology still has certain defects. That is, although the corrosion performance of the welded joint can be improved during use, since the thickness of the bellows of the AI server liquid cooling pipe is relatively small, only 0.18 mm, the bellows welding point is prone to deformation and bending when the bellows and the liquid cooling pipe joint are laser welded, which greatly reduces the forming quality and mechanical properties of the liquid cooling pipe. Summary of the Invention

[0007] The purpose of the present invention is to provide a method and device for forming a liquid cooling pipe for an AI server to solve the problems raised in the above background technology.

[0008] The purpose of the present invention can be achieved through the following technical solutions: An AI server liquid cooling pipeline forming device, comprising: A base, wherein both ends of the upper surface of the base are provided with a cleaning area and a drying area sequentially distributed from the end to the middle, 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, and a side plate is fixedly provided on the upper surface of the base; The workpiece conveying mechanism includes two symmetrically arranged swing assemblies, a clamping assembly arranged at one end of the swing assembly, an adjustment assembly arranged between the corresponding swing assembly and the clamping assembly, and a guide groove provided on the surface of the side plate to guide the corresponding swing assembly to deflect; The swing assembly includes two collinear sliding grooves arranged on the surface of the base, a sliding seat slidably connected to the corresponding sliding grooves, a mounting seat fixed on the top of the sliding seat, and a round rod movably passing through the mounting seat, a cam is fixed at one end of the round rod, and a straight rod movably inserted into the corresponding guide groove is fixed on one side of the cam.

[0009] As a preferred solution of the AI server liquid cooling pipe forming device described in the present invention, the swinging assembly also includes a ring block fixedly sleeved on the outside of the round rod and a bracket fixedly connected to the other end of the round rod, and the side of the ring block opposite to the cam is in contact with the surface of the mounting seat.

[0010] As a preferred solution of the AI server liquid cooling pipe forming device described in the present invention, the guide groove includes horizontal groove one, inclined groove one, horizontal groove two, inclined groove two, horizontal groove three, inclined groove three and horizontal groove four, which are connected in sequence from the end of the base to the middle.

[0011] As a preferred solution of the AI server liquid cooling pipe forming device described in the present invention, wherein: the inclined groove 1 is downwardly inclined between horizontal groove 1 and horizontal groove 2, the inclined groove 2 is upwardly inclined between horizontal groove 2 and horizontal groove 3, the inclined groove 3 is reversely inclined downwardly between horizontal groove 3 and horizontal groove 4, and horizontal groove 4 is located at the midpoint of horizontal groove 1 and horizontal groove 2 in the vertical direction.

[0012] As a preferred solution of the AI server liquid cooling pipeline forming device described in the present invention, the clamping assembly includes a disc suspended on the top of the bracket and a vertical shaft installed in a through-rotating manner at the center of the bracket. One end of the vertical shaft is rotatably connected to the disc through a bearing. Four vertical plates evenly distributed in a ring shape are fixed on the top of the disc. A splint and an arc column are respectively provided on both sides of each vertical plate. Two movable cross bars passing through the corresponding vertical plates are fixedly connected between the opposite sides of the splint and the arc column. A spring is provided on the outside of the cross bar to fix the vertical plate and the arc column.

[0013] As a preferred solution of the AI server liquid cooling pipeline forming device described in the present invention, the adjustment component includes a support plate arranged between the disc and the support seat, the support plate is movably sleeved on the outside of the vertical shaft, and a gear 2 fixedly sleeved on the outside of the vertical shaft and three vertical rods fixedly connected between the support plate and the support seat are provided between the support plate and the support seat, and a gear 1 meshing with gear 2 is rotatably installed on the outside of each vertical rod through a bearing.

[0014] As a preferred solution of the AI server liquid cooling pipeline forming device described in the present invention, a gear ring meshing with three gears is provided between the support plate and the support seat, two molding frames are fixedly connected to the outside of the gear ring, and arc blocks are fixedly connected to the other ends of the two molding frames, and a limiting assembly is provided between the support plate and the disc.

[0015] As a preferred solution of the AI server liquid cooling pipeline forming device described in the present invention, wherein: a guide mechanism is also provided in the middle part of the inner side of the base, the guide mechanism includes two base plates fixed on the inner side of the base, and cylinder 2 is fixedly installed on the opposite sides of the two base plates. The telescopic end of cylinder 2 passes through one end of the corresponding base plate and is fixedly connected to a U-shaped bar, and both ends of the U-shaped bar are fixedly connected to pressure plates.

[0016] The present invention also discloses a method for forming a joint and a bellows of a liquid cooling pipeline using the above-mentioned AI server liquid cooling pipeline forming device, which specifically includes the following steps: S1. Pretreatment: Cut the bellows and perform CNC processing on the liquid cooling pipe joints. Ultrasonic cleaning and drying are performed on the formed bellows and liquid cooling pipe joints. S2. Welding: Use welding fixtures to clamp the bellows and liquid cooling pipe joints, and weld them into shape using laser welding equipment.

[0017] As a preferred solution of the AI server liquid cooling pipeline forming method described in the present invention, the ultrasonic cleaning time in S1 is 30 minutes, the drying temperature is 100°C and kept warm for 45 minutes, the thickness of the bellows is 0.18 mm, the power of the laser welding equipment in S2 is 1500W, and the joints are spot welded first during formal welding. The laser welding process parameters during formal welding are as follows: the welding speed is 40-60 mm / s, the welding acceleration is 100 mm / s2, the power is set to 8%, and the frequency is 3000 Hz.

[0018] Beneficial effects of the present invention: 1. The present invention utilizes a motor to drive the screw to rotate, causing the two moving parts of the workpiece conveying mechanism that clamp the target workpiece to move toward each other. Guided by corresponding guide grooves, the two moving parts sequentially pass through the corresponding cleaning area and drying area, and finally enter the welding area to complete the ultrasonic cleaning, drying, plugging and welding of the liquid cooling pipe joint and the bellows, thereby realizing automated processing and improving production efficiency. 2. The present invention provides a guide mechanism, which can control the movement of the pressure plate on the corresponding side to assist in controlling the transition between the horizontal groove 3 and the horizontal groove 4 on the corresponding guide groove in the moving direction of the straight rod, thereby ensuring the precise steering of the straight rod; 3. The present invention utilizes arc blocks that rotate with the gear ring to squeeze the four arc columns on the clamping assembly, thereby achieving comprehensive ultrasonic cleaning and drying of the bellows and joints, thereby improving the overall quality of the finished liquid cooling pipeline; 4. The AI server liquid cooling pipe joint welded by the present invention is well formed, without surface defects and internal pores, and has good air tightness. There is no leakage under helium leak detection. A boss is designed at the connection of the liquid cooling pipe joint to connect with the bellows. The mechanical limit is used to solve the problem of welding deformation due to the thin wall of the bellows, and the welding efficiency is greatly improved without affecting the welding formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort. Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 It is a structural schematic diagram of the workpiece conveying mechanism of the present invention; Figure 4 It is an exploded schematic diagram of the workpiece conveying mechanism of the present invention; Figure 5 It is a schematic diagram of the guide groove structure of the present invention; Figure 6 This is a process diagram of the swing assembly of the present invention moving from the initial position to the cleaning position; Figure 7 This is a process diagram of the swing assembly of the present invention moving from the cleaning station to the drying station; Figure 8 This is a process diagram of the swing assembly of the present invention moving from the drying station to the welding station; Figure 9 It is a structural schematic diagram of the drying area of the present invention; Figure 10 It is a schematic structural diagram of the guide mechanism of the present invention; Figure 11 It is a structural schematic diagram of the welding mechanism of the present invention; Figure 12 This is a schematic structural diagram of the bellows joint of the present invention without a boss; Figure 13It is a structural schematic diagram of a bellows joint provided with a boss according to the present invention.

[0020] The accompanying drawings are numeraled 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. bracket; 52. clamping assembly; 521. disc; 522. vertical plate; 523. clamping plate; 524. horizontal rod; 525. arc column; 526. spring; 527. vertical axis; 53. adjustment assembly; 531. vertical rod; 532. bracket; 533. cylinder 1; 534. gear ring; 535. frame; 536. arc block; 54. guide groove; 541 , horizontal trough one; 542, inclined trough one; 543, horizontal trough two; 544, inclined trough two; 545, horizontal trough three; 546, inclined trough three; 547, horizontal trough four; 6. Cleaning area; 61. Cleaning trough; 62. Ultrasonic vibration plate; 7. Drying area; 71. Cover frame; 72. Electric heating tube; 73. Air cavity; 74. Circulation pump; 75. Air pipe; 8. Guide mechanism; 81. Base plate; 82. Cylinder two; 83. U-shaped bar; 84. Press plate; 9. Welding mechanism; 91. Inclined table; 92. Support plate; 93. Notch; 94. Cylinder three; 95. Upper arc plate; 96. Lower arc plate; 97. Welding head. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] The forming device of the present invention belongs to a kind of intelligent manufacturing equipment industry, which is a part of the laser welding equipment and is used for synchronously conveying, cleaning, drying, plugging and welding the liquid cooling pipe joint and the corrugated pipe to be welded, thereby improving production efficiency. Refer to the instruction manual Figure 1-Figure 5 , which is the first embodiment of the present invention, provides an AI server liquid cooling pipe forming device, including a base 1, with a cleaning area 6 and a drying area 7 distributed 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 symmetrically arranged, a welding mechanism 9 is provided in the middle of the upper surface of the base 1, and a side plate is fixed to the upper surface of the base 1; The workpiece conveying mechanism 5 includes two symmetrically arranged swing assemblies 51, a clamping assembly 52 provided at one end of the swing assembly 51, an adjustment assembly 53 provided between the corresponding swing assembly 51 and the clamping assembly 52, and a guide groove 54 provided on the surface of the side plate to guide the corresponding swing assembly 51 to swing. The swing assembly 51, the clamping assembly 52, and the adjustment assembly 53 corresponding to each mounting seat 4 form a moving part. The two moving parts can be used to respectively convey the liquid cooling pipe joint and the corrugated pipe for welding. Two collinear sliding grooves 2 are provided on the upper surface of the base 1, and two guide grooves 54 are opened on the surface of the side plate. A screw driven by a motor is installed in a through-type rotation between the two sliding grooves 2. The screw threads at the outer sides of the screw corresponding to the two sliding grooves 2 are set in opposite directions. The slides 3 slidably connected to the inside of the two sliding grooves 2 are all threadedly sleeved on the outer sides of the screws. Through the threads at the two ends of the outer sides of the screws with opposite spiral directions, the rotating screws can be used to drive the two slides 3 to move toward / away from each other. The mounting seat 4 is fixedly installed on the top of the slide 3; Furthermore, the guide groove 54 includes a horizontal groove 1 541, an oblique groove 1 542, a horizontal groove 2 543, an oblique groove 2 544, a horizontal groove 3 545, an oblique groove 3 546 and a horizontal groove 4 547, which are connected in sequence from the end to the middle of the base 1, and there is a smooth transition between adjacent sections of the guide groove 54. The oblique groove 1 542 is downwardly inclined between the horizontal groove 1 541 and the horizontal groove 2 543, the oblique groove 2 544 is upwardly inclined between the horizontal groove 2 543 and the horizontal groove 3 545, the oblique groove 3 546 is turned and downwardly inclined between the horizontal groove 3 545 and the horizontal groove 4 547, and 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.

[0023] It should be noted that the present invention drives the screw to rotate by using a corresponding motor to drive the two mounting seats 4 to move toward each other (to be set Figure 1 The state shown is the initial state) moves, thereby driving the two moving parts on the workpiece conveying mechanism 5 to move toward each other, so that the liquid-cooling pipe joint and the corrugated pipe to be welded pass through the corresponding cleaning area and drying area in sequence under the guidance of the corresponding guide groove 54 during the movement along the sliding groove 2, and finally enter the welding area to complete the ultrasonic cleaning, drying, plugging and welding of the liquid-cooling pipe joint and the corrugated pipe, wherein the cleaning area 6 is arranged between the inclined groove 1 542 and the horizontal groove 2 543 in the direction of movement of the corresponding slide 3 in the initial state, the drying area 7 is arranged between the inclined groove 2 544 and the horizontal groove 4 547 in the direction of movement of the corresponding slide 3 in the initial state, and the welding mechanism 9 is arranged at the center position between the two drying areas 7.

[0024] Further, if Figure 1 and Figure 3-Figure 8As shown, the swing assembly 51 includes a round rod 511 that movably passes through the corresponding mounting seat 4. A fixed sleeve is provided on the outer side of the round rod 511 with a ring block 512 and a cam 513 that respectively fits on both sides of the mounting seat 4. The arrangement of the ring block 512 and the cam 513 can ensure that the round rod 511 does not move along its axial direction. In addition, in order to reduce the friction resistance encountered by the cam 513 during the swinging process, rolling balls can be provided on the side of the cam 513 and the ring block 512 facing the mounting seat 4. A straight rod 514 movably inserted into the corresponding guide groove 54 is fixedly provided on one side of the cam 513. The corresponding guide groove 54 is used to guide the straight rod 514 to move and deflect, thereby adjusting the orientation of the workpiece clamped on the clamping assembly 52 (i.e., the liquid-cooling pipe joint and the bellows to be welded, the same below). The end of the round rod 511 away from the cam 513 is fixedly connected to the bracket 515, wherein the movement trajectory of the round rod 511 is collinear with the horizontal groove 547 of the corresponding slide 3 in the initial state movement direction.

[0025] Furthermore, the clamping assembly 52 includes a disk 521 suspended on the top of the bracket 515 and a vertical shaft 527 rotatably mounted at the center of the bracket 515. One end of the vertical shaft 527 is rotatably connected to the disk 521 via a bearing, and the other end of the vertical shaft 527 is fixedly connected to the output shaft of the motor mounted on the bracket 515. Four vertical plates 522 evenly distributed in a ring shape are fixed on the top of the disc 521. A clamping plate 523 and an arc column 525 are respectively provided on both sides of each vertical plate 522. Among them, the top ends of the two clamping plates 523 arranged opposite to each other are expanded to ensure that the workpiece can smoothly enter the clamping area of the clamping assembly 52, and the clamping plates 523 can be set as a circular hole structure to facilitate the subsequent cleaning and drying process. Two cross bars 524 that are movable and pass through the corresponding vertical plates 522 are fixedly connected between the clamping plates 523 and the opposite sides of the arc column 525. The outer side of the cross bar 524 is provided with a fixed connection to the vertical plate 522 The spring 526 of the arc column 525, when the spring 526 is in the natural state, the minimum distance between the opposite sides of the two oppositely arranged clamps 523 is greater than the outer diameter of the workpiece, that is, the clamps 523 and the workpiece in this state are separated from each other, wherein a buffer air bag is fixedly provided on the top of the disc 521 for limiting the workpiece inserted into the clamping area, wherein the buffer air bag includes a frustum-shaped ring plate and a bulging area, and an air pump for inflating and deflating the bulging area of the corresponding buffer air bag is fixedly installed on the outside of the disc 521, and the air pump adopts a diaphragm air pump with model D08L.

[0026] Furthermore, the adjustment assembly 53 includes a support plate 532 disposed between the disc 521 and the bracket 515. The support plate 532 is movably sleeved on the outside of the vertical shaft 527. A second gear fixedly sleeved on the outside of the vertical shaft 527 and three annular and evenly distributed vertical rods 531 fixedly connected between the support plate 532 and the bracket 515 are provided between the support plate 532 and the bracket 515. The provision of the vertical rods 531 can ensure that the relative position between the bracket 515 and the support plate 532 remains fixed. A gear 1 meshing with the gear 2 is rotatably mounted on the outside of each vertical rod 531 through a bearing. A gear ring 534 meshing with the three gears 1 is further provided between the support plate 532 and the support seat 515. The motion trajectory of the gear ring 534 can be limited by the three gears 1 driven to rotate under the rotation of the gear 2, and the gear ring 534 can be driven to rotate by the three gears 1 that rotate synchronously. Two molded frames 535 are fixedly connected to the outer side of the gear ring 534. The other ends of the two molded frames 535 are fixedly connected to arc blocks 536, wherein the central angle of the arc block 536 is greater than 90° and less than 135°, ensuring that the arc block 536 always maintains a state of extrusion contact with at least one arc column 525 during the process of rotating with the gear ring 534, and the end of the arc block 536 in the direction of its rotation is an arc setting (see Figure 4 ), which can better squeeze 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, and the telescopic end of the cylinder 533 is fixedly connected to an anti-slip ring which is concentrically arranged with the vertical axis 527. An annular groove opposite to the anti-slip ring is provided at the bottom of the disk 521. The anti-slip ring inserted into the annular groove can be used to limit the state of the disk 521 to prevent the disk 521 from rotating with the vertical axis 527.

[0027] It should be noted that, in the process of using the workpiece conveying mechanism 5 to convey the liquid-cooling pipe joint and the corrugated pipe to be welded to the welding station for welding, the corresponding motor is used to drive the screw to rotate, and the rotating screw is used to drive the two mounting seats 4 to move toward each other. In this process, as the mounting seat 4 and the corresponding slide 3 move along the direction of the slide groove 2, the workpiece clamped by the clamping assembly 52 will undergo the following changes: 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 period, 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 degrees counterclockwise with the round rod 511 as the central axis under the guidance of the inclined groove 1 542, and the clamping assembly 52 installed on the bracket 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; Process 2 (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 period, the state change of the clamped workpiece refers to process 1, except that the cam 513 rotates 180° clockwise with the round rod 511 as the central axis, allowing the workpiece to change from a vertical downward state to a vertical 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; Process 3 (see Figure 8 ), the 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 change in the state of the clamped workpiece refers to process 2, except that the cam 513 continues to rotate 90° clockwise with the round rod 511 as the central axis, causing the workpiece to deflect to the right from the vertical upward state to a horizontal state. During this process, the clamped workpiece will leave the drying area; 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 period, the welding ends of the two workpieces to be welded remain in a facing state to complete the insertion, and the insertion position is put into the welding station to wait for welding; In the above four processes, the screw rotation direction of processes one, two and four is the same, and the screw rotation direction of process three is opposite to that of process three.

[0028] It should be further explained that, when the clamped workpiece enters the cleaning and drying areas for processing, the air cylinder 1 533 will push the anti-slip ring into the annular groove at the bottom of the disc 521, and press the disc 521 tightly to prevent it from rotating. Then, the corresponding motor will drive the vertical shaft 527 to rotate, and the gear 2 that rotates synchronously with the vertical shaft 527 will indirectly drive the gear ring 534 to rotate, and drive the arc block 536 to rotate synchronously with the gear ring 534, so as to drive the two sets of oppositely arranged clamping plates 523 to alternately contact and tighten with 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 to shrink the bulging area of the buffer airbag, so as to ensure that the clamped workpiece is completely cleaned and dried. While the clamped workpiece is moving in opposite directions and entering the welding station, cylinder 1 533 will push the anti-slip ring out of the annular groove at the bottom of the disc 521. Then, during the welding process, the corresponding motor will drive the vertical shaft 527 to rotate, and the gear 2 that rotates synchronously with the vertical shaft 527 will be used to indirectly drive the gear ring 534 to rotate. During the rotation of the arc block 536 that rotates synchronously with the gear ring 534, since the disc 521 is not limited by the anti-slip ring, the arc block 536 will directly push the disc 521 to rotate after contacting the arc column 525, under the limitation of the corresponding spring 526, to achieve annular surface welding.

[0029] Further, if Figure 1-Figure 2 As shown, the cleaning area 6 includes a cleaning tank 61 opened on the inner side of the base 1, and an ultrasonic vibration plate 62 is fixedly installed inside the cleaning tank 61. The ultrasonic vibration plate 62 adopts the ultrasonic vibration plate of model KP-1012, which is suitable for cleaning precision parts.

[0030] It should be noted that the ultrasonic vibration plate 62 is installed in a bottom vibration type, which utilizes the cavitation effect generated by ultrasound in the liquid, combined with high-frequency mechanical vibration and the physical and chemical effects of the cleaning medium to achieve efficient stripping and cleaning of dirt on the surface of the object.

[0031] Further, if Figure 1 and Figure 9 As shown, the drying area 7 includes a cover frame 71 fixedly mounted on the inner side of the base 1, an electric heating tube 72 fixedly mounted on the inner top of the cover frame 71, and 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 mounted on the top of the cover frame 71, and the circulation pump 74 adopts a micro electric air pump with model number 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, wherein the air pipes 75 at both ends of the inner side of the cover frame 71 are used to realize the circulating suction of the hot air inside the cover frame 71, thereby realizing full utilization of the heat.

[0032] It should be noted that in the process of drying 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 the hot air heated inside the cover frame 71 to extract it, which not only fully utilizes the heat, but also reduces the energy waste caused by the overflow of hot air.

[0033] Further, if Figure 1 and Figure 11 As shown, the welding mechanism 9 includes an inclined platform 91 and a support plate 92 fixed on the inner side of the base 1, the end of the support plate 92 is fixedly connected to the upper arc plate 95, and a slot 93 is provided in the middle of the inclined platform 91 at a position corresponding to the upper arc plate 95, and a cylinder three 94 is fixedly installed on the inner side of the slot 93, and the telescopic end of the cylinder three 94 is fixedly connected to the lower arc plate 96 opposite to the upper arc plate 95, and a welding head 97 is fixedly installed in the middle of the upper arc plate 95. The welding head 97 adopts the laser welding head in the prior art, which will not be described here. In addition, an exhaust pipe can also be connected to the upper arc plate 95 to extract the exhaust gas generated by welding in real time during the laser welding process, so as to avoid the exhaust gas escaping and causing environmental pollution during the process of controlling the lower arc plate 96 to unload downward.

[0034] It should be noted that, in the process of welding the liquid cooling pipe structure and the bellows that have been plugged in, when the liquid cooling pipe joint and the bellows that move in opposite directions are plugged in, the plug seam formed by the plugging of the two is located inside the cavity surrounded by the upper arc plate 95 and the lower arc plate 96 after buckling, and is exactly opposite to the welding head 97, and then the clamped workpiece is controlled to rotate to complete the welding of the annular surface. After the welding is completed, the cylinder 3 94 will be used to control the lower arc plate 96 to support the welded workpiece downward, and the workpiece conveying mechanism 5 will be reset to the initial position to wait for the next round of conveying; When the workpiece to be welded is lowered downward by controlling the lower arc plate 96 supported by the cylinder 3 94 , the lower arc plate 96 will gradually shrink into the slot 93 , and the workpiece to be welded will be blocked by the inclined platform 91 . After the workpiece to be welded is separated from the lower arc plate 96 , it will roll along the inclined platform 91 to the next process.

[0035] Refer to the instruction manual Figure 2 and Figure 10, which is the second embodiment of the present invention. What is different from the first embodiment is that a guide mechanism 8 is further provided in the middle of the inner side of the base 1. The guide mechanism 8 includes two base plates 81 fixed on the inner side of the base 1. Cylinder 2 82 is fixedly installed on the opposite sides of the two base plates 81. The telescopic end of cylinder 2 82 passes through one end of the corresponding base plate 81 and is fixedly connected to a U-shaped bar 83. Both ends of the U-shaped bar 83 are fixedly connected to a pressing plate 84, wherein the width of the pressing plate 84 is less than the length of the straight rod 514 extending to the outside of the guide groove 54, to ensure that when the mounting seat 4 moves close to the welding station, the swinging cam 513 will not be blocked by the components of the guide mechanism 8.

[0036] 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 in the moving direction to the horizontal groove 4 547 (i.e., process 3 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 condition of the reverse rotation of the screw, the control end controls the cylinder 2 82 at the upper end to push the U-shaped bar 83 downward, thereby driving the corresponding two pressing plates 84 to move downward synchronously, so as to push the straight rods 514 on the two conveying stations to smoothly turn into the inclined groove 3 546; When the straight rod 514 is about to enter the horizontal groove 4 547 from the inclined groove 3 546 under the condition of the screw rotating in the forward direction, the pressing plate 84 at the upper end moves downward until its lower end surface is flush with the upper side of the horizontal groove 4 547, so as to ensure that the straight rods 514 on the two conveying stations can smoothly turn into the horizontal groove 4 547; On the contrary, when the workpiece conveying mechanism 5 is reset to its initial state after the workpiece welding is completed, the straight rods on the two conveying stations are pushed smoothly from the horizontal slot four 547 to the inside of the horizontal slot three 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.

[0037] In the above technical solution, each of the cylinders mentioned is a single-acting cylinder of model DSA25N200. Example

[0038] Based on the description of the above AI server liquid cooling pipe forming device, the present invention also provides an AI server liquid cooling pipe forming method, the liquid cooling pipe is composed of a corrugated pipe and a liquid cooling pipe joint (see the attached manual Figure 13 ), the material is 304 stainless steel, the thickness of the bellows is 0.18mm, and the specific operation steps include the following: S1. Pretreatment: Cut the bellows and CNC machine the liquid cooling pipe joints. Ultrasonic cleaning and drying are performed on the formed bellows and liquid cooling pipe joints. The ultrasonic cleaning time is 30 minutes, and the drying temperature is 100°C and kept warm for 45 minutes. S2. Welding: Clamp the bellows and the liquid cooling pipe joint using a welding fixture and weld them together using a laser welding device. The laser welding device (i.e., the aforementioned welding head 97, similarly hereinafter) has a power of 1500 W. Spot welding is first performed on the joint during formal welding. The laser welding process parameters during formal welding are as follows: welding speed of 40 mm / s, welding acceleration of 100 mm / s², power setting of 8%, frequency of 3000 Hz, and shielding gas of 99.9% purity argon. Comparative Example 1: Referring to Example B1, the difference is that there is no boss designed at the connection of the liquid cooling pipe joint (see the attached Figure 12 ). Example

[0039] The difference from Example 1 is that the welding speed in the laser welding process parameters during formal welding is 50 mm / s.

[0040] Comparative Example 2: Refer to Example 2, the difference is that no boss is designed at the connection of the liquid cooling pipe joint. Example

[0041] The difference from Example 2 is that the welding speed in the laser welding process parameters during formal welding is 60 mm / s.

[0042] Comparative Example 3: Refer to Example 3, the difference is that no boss is designed at the connection of the liquid cooling pipe joint.

[0043] The AI server liquid cooling pipes were welded for Examples 1-3 and Comparative Examples 1-3, respectively. The laser welding process parameters are shown in Table 1.

[0044] Table 1 Laser welding process parameters Welding speed (mm / s) <![CDATA[Welding acceleration (mm / s 2 ).]]> Laser power (W) Frequency (Hz) 40 / 50 / 60 100 1500 3000 Further macroscopic observation and ultimate tensile testing were performed on the weld seams of the AI server liquid cooling pipes in Examples 1-3 and Comparative Examples 1-3. Ultimate tensile testing was performed using a DZ-101-2T servo tensile testing machine. The observation and test results are shown in Table 2 below.

[0045] Table 2 Macroscopic surface observation and tensile test results of welds of Examples 1-3 and Comparative Examples 1-3

[0046] As shown in Table 2 for Examples 1-3 and Comparative Examples 1-3, low heat input can lead to incomplete weld penetration, while high heat input can cause burn-through. A comparison of Examples 1-3 and Comparative Examples 1-3 shows that the inclusion of the liquid-cooling pipe joint boss effectively prevents bellows bending and achieves optimal ultimate tensile strength at a welding speed of 50 mm / s.

[0047] Compared with related technologies, the AI server liquid cooling pipe forming method provided by the present invention has the following beneficial effects: The present invention discloses a method for forming liquid-cooling pipelines for AI servers. The bellows and the liquid-cooling pipe joint are clamped by a welding fixture and welded into shape by laser welding equipment. A boss is designed at the connection of the liquid-cooling pipe joint and the laser welding process parameters are adjusted to improve the welding stability of the joint, thereby greatly improving the forming efficiency of the liquid-cooling pipelines for AI servers and solving the problem of welding deformation of the bellows due to its small thickness.

[0048] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

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

2. The AI server liquid cooling pipe forming device according to claim 1, characterized in that: The swing assembly (51) further comprises a ring block (512) fixedly sleeved on the outside of the round rod (511) and a bracket (515) fixedly connected to the other end of the round rod (511), wherein 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 pipe forming device according to claim 1, characterized in that: The guide groove (54) includes a horizontal groove 1 (541), an oblique groove 1 (542), a horizontal groove 2 (543), an oblique groove 2 (544), a horizontal groove 3 (545), an oblique groove 3 (546) and a horizontal groove 4 (547) which are sequentially connected from the end to the middle of the base (1).

4. The AI server liquid cooling pipe forming device according to claim 3, characterized in that: 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 turned and inclined downward between the horizontal groove 3 (545) and the horizontal groove 4 (547), and 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.

5. The AI server liquid cooling pipeline forming device according to claim 2, characterized in that: The clamping assembly (52) includes a disk (521) suspended on the top of the bracket (515) and a vertical shaft (527) installed in a through-rotating manner at the center of the bracket (515). One end of the vertical shaft (527) is rotatably connected to the disk (521) via a bearing. Four vertical plates (522) evenly distributed in an annular shape are fixedly provided on the top of the disk (521). Each vertical plate (522) is provided with a clamping plate (523) and an arc column (525) on both sides. Two cross bars (524) that are movable and pass through the corresponding vertical plates (522) are fixedly connected between the opposite sides of the clamping plate (523) and the arc column (525). The outer side of the cross bar (524) is provided with a spring (526) that fixes the vertical plates (522) and the arc column (525).

6. The AI server liquid cooling pipe forming device according to claim 5, characterized in that: The adjustment assembly (53) includes a support plate (532) arranged between the disc (521) and the support seat (515), the support plate (532) being movably sleeved on the outside of the vertical shaft (527), and a gear 2 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 seat (515), wherein a gear 1 meshing with the gear 2 is rotatably mounted on the outside of each vertical rod (531) via a bearing.

7. The AI server liquid cooling pipe forming device according to claim 6, characterized in that: A gear ring (534) meshing with the three gears is further provided between the support plate (532) and the support seat (515). Two profile frames (535) are fixedly connected to the outside of the gear ring (534). The other ends of the two profile frames (535) are fixedly connected to arc blocks (536). A limiting assembly is provided between the support plate (532) and the disc (521).

8. The AI server liquid cooling pipe forming device according to claim 1, characterized in that: A guide mechanism (8) is further provided at the middle portion of the inner side of the base (1). The guide mechanism (8) comprises two base plates (81) fixed on the inner side of the base (1). Cylinder 2 (82) is fixedly mounted on opposite sides of the two base plates (81). The telescopic end of cylinder 2 (82) passes through one end of the corresponding base plate (81) and is fixedly connected to a U-shaped bar (83). Both ends of the U-shaped bar (83) are fixedly connected to a pressure plate (84).

9. A method for forming a liquid cooling pipe for an AI server, comprising welding a joint and a bellows of the liquid cooling pipe using the AI server liquid cooling pipe forming device according to any one of claims 1 to 8, wherein: The specific steps are as follows: S1. Pretreatment: Cut the bellows and perform CNC processing on the liquid cooling pipe joints. Ultrasonic cleaning and drying are performed on the formed bellows and liquid cooling pipe joints. S2. Welding: Use welding fixtures to clamp the bellows and liquid cooling pipe joints, and weld them into shape using laser welding equipment.

10. The method for forming a liquid cooling pipeline for an AI server according to claim 9, characterized in that: The ultrasonic cleaning time in S1 is 30 minutes, the drying temperature is 100℃ and kept warm for 45 minutes, the thickness of the corrugated pipe is 0.18mm, the power of the laser welding equipment in S2 is 1500W, and the joints are spot welded first during formal welding. The laser welding process parameters during formal welding are as follows: welding speed is 40-60mm / s, welding acceleration is 100mm / s2, power is set to 8%, and frequency is 3000Hz.

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