A riveting device and method for an AI server heat dissipation substrate

Abstract

The application discloses a riveting device and method for AI server heat dissipation, and relates to the technical field of riveting. The device comprises a bottom column and a support plate which are sequentially fixed on the table top of a workbench, and a left expansion assembly and a right expansion assembly are arranged on the left and right sides of the support plate on the table top of the workbench. A push block is fixed on the left end face of the extension end of a movable plate, a force transmission rod is slidably penetrated through the movable plate and located above and below the push block, and the left and right ends of a first spring are fixed on the movable plate and the annular end head respectively. The left and right ends of a second spring are fixed on a pressing plate and a fixed seat respectively, and the pressing plate is abutted against the right end face of the push block under the elastic force of the second spring. The application has the advantages of greatly reducing the riveting work intensity of workers and greatly improving the riveting efficiency of two heat dissipation substrates.

Description

Technical Field

[0001] This invention relates to the technical field of riveting, and in particular to a riveting device and method for a heat dissipation substrate for AI server heat dissipation. Background Technology

[0002] A client's AI server generates a significant amount of heat during operation. To dissipate this heat into the air, staff typically install a device such as... Figures 1-3 The heat dissipation substrate 1 shown releases the heat generated by the AI ​​server into the air. Multiple strip-shaped heat dissipation elements 2 are fixedly arranged in an array within the heat dissipation substrate 1. Each strip-shaped heat dissipation element 2 is vertically distributed. When operating, the heat generated by the AI ​​server is transferred to the heat dissipation substrate 1, and then the heat is released into the air by the strip-shaped heat dissipation elements 2 within the heat dissipation substrate 1, thereby achieving the purpose of cooling the AI ​​server.

[0003] In order to better dissipate heat from customers' AI servers, workers in a certain workshop riveted two heat dissipation base plates 1 together to obtain a heat dissipation product, and then delivered the riveted heat dissipation product to customers for use. The advantage of riveting the two heat dissipation base plates 1 together is that it makes it easier for customers to install the heat dissipation product inside the AI ​​server.

[0004] The method by which workers in the workshop rivet two heat sink substrates 1 together to obtain a heat dissipation product is as follows:

[0005] S1. Drill two riveting holes 3 in each of the two heat dissipation substrates 1. The specific operation steps are as follows:

[0006] S11, The worker removes two heat sink substrates 1;

[0007] S12. Fix a heat sink substrate 1 onto the tooling table of a CNC machining equipment, and then drill a riveting hole 3 in the center of both the left and right end faces of the heat sink substrate 1 using the CNC machining equipment, such as... Figures 4-6 As shown;

[0008] S13. The worker repeats step S12 once to drill a riveting hole 3 in the center of the left and right end faces of the other heat dissipation substrate 1.

[0009] S2, the worker took out two such... Figures 7-8 The riveting component shown includes a guard plate 4. An expansion sleeve 5 is welded to both the upper and lower ends of the guard plate 4. A tapered hole 6 is opened in the expansion sleeve 5 along its axial direction. The outer diameter of the expansion sleeve 5 is smaller than the diameter of the riveting hole 3.

[0010] S3. Fix the two heat sink substrates 1 in place. The specific steps are as follows:

[0011] S31. The worker stacks the two heat dissipation substrates 1 from step S1 sequentially on the table surface 7, as follows: Figure 9 As shown, and ensure that the four outer end faces of the upper heat dissipation substrate 1 are flush with the four outer end faces of the lower heat dissipation substrate 1 respectively.

[0012] S32. The worker controls the piston rod of the press to move downwards, which in turn drives the pressure head 8 downwards. When the piston rod of the press is fully extended, the two heat dissipation plates 1 are fixed between the table 7 and the pressure head 8, thus achieving the fixation of the two heat dissipation plates 1. Figure 10 As shown;

[0013] S4. Use a rivet to fix the right ends of the two heat sink substrates 1 together. The specific operation steps are as follows:

[0014] S41. The worker inserts the two expansion sleeves 5 of a riveting component into the riveting holes 3 on the right side of the two heat sink substrates 1, respectively. Figure 11 As shown, the protective plate 4 of the riveted component is pressed against the right end face of the two heat dissipation base plates 1.

[0015] S42, The worker took out a... Figure 12 The expansion rod shown consists of a handle 9 and a conical head M10 that are sequentially fixed together.

[0016] S43. The worker inserts the tapered head M10 of the expansion rod from right to left into the tapered hole 6 of the upper expansion sleeve 5 of the riveting component, such as... Figure 13 As shown, then use a hammer to repeatedly strike the right end face of the handle 9 of the expansion rod, in the direction shown. Figure 13 As shown by the middle arrow, under the impact force, the material of the upper expansion sleeve 5 expands radially and tightens inside the rivet hole 3;

[0017] S44. The worker inserts the tapered head M10 of the expansion rod from right to left into the tapered hole 6 of the lower end expansion sleeve 5 of the riveting component, such as... Figure 14 As shown, then use a hammer to repeatedly strike the right end face of the handle 9 of the expansion rod, in the direction shown. Figure 14 As shown by the middle arrow, under the impact force, the material of the lower end expansion sleeve 5 expands radially and tightens in the rivet hole 3, thereby using a rivet to fix the right ends of the two heat dissipation base plates 1 together.

[0018] S5. The worker repeats step S4 once, and then uses another riveting piece to fix the left ends of the two heat sink substrates 1 together, thus finally riveting the two heat sink substrates 1 together. Figure 15 As shown, a heat dissipation product is obtained, and the structure of the obtained heat dissipation product is as follows. Figure 16 As shown;

[0019] S6. Workers can repeat steps S1 to S5 multiple times to obtain multiple heat dissipation products.

[0020] However, although the method used in the workshop can rivet the two heat dissipation substrates 1 together to obtain a heat dissipation product, it still has the following technical defects:

[0021] I. In steps S42 to S43, the worker needs to first insert the tapered head M10 of the expansion rod into the tapered hole 6 of the expansion sleeve 5, and then use a hammer to repeatedly strike the right end face of the handle 9 of the expansion rod to tighten the expansion sleeve 5 into the riveting hole 3. The entire operation is done manually by the worker, which not only increases the worker's riveting workload, but also reduces the riveting efficiency of the two heat dissipation substrates 1.

[0022] II. In step S4, the worker needs to perform two tightening processes to tighten the two expansion sleeves 5 of a riveting component into the two riveting holes 3 on the right side, so as to fix the right ends of the two heat dissipation substrates 1 together.

[0023] In step S5, the worker still needs to perform two tightening processes to tighten the two expansion sleeves 5 of the other riveting component into the two riveting holes 3 on the left side, and then fix the left ends of the two heat dissipation substrates 1 together. In other words, a total of four tightening processes are required to rivet the two heat dissipation substrates 1 together. This undoubtedly results in a long time to rivet the two heat dissipation substrates 1 together, thereby reducing the riveting efficiency of the two heat dissipation substrates 1. At the same time, it also reduces the production output of heat dissipation products and cannot meet customer demand.

[0024] Therefore, there is an urgent need for a riveting device and method that can greatly reduce the riveting workload of workers and greatly improve the riveting efficiency of two heat dissipation substrates. Summary of the Invention

[0025] The purpose of this invention is to overcome the shortcomings of the prior art and provide a riveting device and method for a heat dissipation substrate for AI server heat dissipation.

[0026] The objective of this invention is achieved through the following technical solution: a riveting device for a heat dissipation substrate for an AI server, comprising a base column and a support plate sequentially fixed on a workbench surface, wherein a left expansion assembly and a right expansion assembly are respectively provided on the workbench surface and on the left and right sides of the support plate, and the left expansion assembly and the right expansion assembly have the same structure.

[0027] The right expansion assembly includes a machine base and a cantilever frame fixed on the workbench. A horizontally arranged main cylinder is fixed inside the machine base. A movable plate extending upward above the machine base is fixed on the piston rod of the main cylinder. A push block is fixed on the left end face of the extended end of the movable plate. A force transmission rod slides through the movable plate and is located above and below the push block. A conical head P and an annular end are fixed on the left and right ends of the force transmission rod, respectively. A first spring is sleeved on the outside of the force transmission rod. The left and right ends of the first spring are fixed on the movable plate and the annular end, respectively.

[0028] A horizontal plate extending directly above the machine is fixed on the right end face of the movable plate. A vertical plate is fixed on the top surface of the horizontal plate. Two reciprocating impact cylinders are fixed on the right end face of the vertical plate. The piston rods of the two reciprocating impact cylinders pass through the vertical plate and are connected to impact blocks at their extended ends. The two impact blocks are respectively opposed to the two annular ends.

[0029] The right tensioning assembly also includes a fixed base fixed to the top of the cantilever frame. Multiple guide rods are slidably installed in the fixed base. A downwardly extending pressure plate is fixed between the left ends of the multiple guide rods. Two through holes are opened in the pressure plate. The two through holes are respectively sleeved on the outside of the two force transmission rods. A second spring is sleeved on the guide rod. The left and right ends of the second spring are respectively fixed on the pressure plate and the fixed base. Under the elastic force of the second spring, the pressure plate abuts against the right end face of the push block.

[0030] The four outer end faces of the support plate are flush with the four outer end faces of the heat dissipation substrate.

[0031] Multiple support legs, which are fixed to the ground, are mounted on the bottom surface of the workbench.

[0032] The tapered head P mates with the tapered hole of the expansion sleeve of the riveting component.

[0033] The movable plate has two optical holes that correspond to the two force transmission rods respectively, and the two force transmission rods are slidably installed in the two optical holes respectively.

[0034] A horizontal guide rail is fixed on the top surface of the machine tool, and a slider is fixed on the bottom surface of the horizontal plate, with the slider mounted on the horizontal guide rail.

[0035] The left and right tensioning components are symmetrical about the support plate.

[0036] The riveting device also includes a controller, which is electrically connected to the reciprocating impact cylinder and the main cylinder via signal lines.

[0037] A riveting method for a heat dissipation substrate used in AI servers includes the following steps:

[0038] S1. Drill a riveting hole in the center of the left and right end faces of a batch of heat dissipation substrates using CNC machining equipment.

[0039] S2. Position the two heat dissipation substrates with riveting holes. The specific operation steps are as follows:

[0040] S21. The worker removes two heat dissipation substrates with rivet holes;

[0041] S22. The worker stacks two heat dissipation substrates sequentially on the top surface of the support plate. The worker adjusts the position of the heat dissipation substrates to ensure that the four outer end faces of the lower heat dissipation substrate are flush with the four outer end faces of the support plate, and at the same time, ensure that the four outer end faces of the upper heat dissipation substrate are flush with the four outer end faces of the lower heat dissipation substrate. This achieves the positioning of the two heat dissipation substrates with rivet holes. At this time, the right rivet holes of the two heat dissipation substrates face the two conical heads P of the right expansion assembly, and the left rivet holes of the two heat dissipation substrates face the two conical heads P of the left expansion assembly.

[0042] S3. Position and install the two rivet parts on the right and left expansion components respectively. The specific operation steps are as follows:

[0043] S31. The worker removes two riveted parts;

[0044] S32. The tapered holes of the two expansion sleeves of a rivet are respectively fitted onto the two tapered heads P of the right expansion assembly, and the guard plate of the rivet is placed against the right end face of the pressure plate, thereby positioning and installing the first rivet on the right expansion assembly. At this time, the two expansion sleeves of the rivet are respectively opposite to the two rivet holes on the right side.

[0045] S33. The worker repeats step S32 once to position and install the second rivet on the left expansion assembly. At this time, the two expansion sleeves of the rivet are respectively opposite to the two rivet holes on the left side.

[0046] S4. The piston rod of the main cylinder of the right expansion assembly extends to the left, the piston rod drives the movable plate to move to the left, the movable plate drives the horizontal plate, push block, two first springs, two force transmission rods, two conical heads P and two reciprocating impact cylinders to move to the left, the push block pushes the pressure plate to move to the left synchronously, the pressure plate stretches the second spring to the left, and the pressure plate also drives the riveting parts to move to the left synchronously, the two expansion sleeves of the riveting parts move towards the two riveting holes on the right side respectively;

[0047] At the same time, the piston rod of the main cylinder controlling the left tensioning assembly extends to the right, thereby causing the rivet that is positioned and installed on the left tensioning assembly to move to the right, and the two expansion sleeves of the rivet move toward the two rivet holes on the left side respectively;

[0048] When the piston rods of the main cylinder of the right expansion assembly and the left expansion assembly are fully extended, the two expansion sleeves of the right riveting component are respectively inserted into the two riveting holes on the right side, and the guard plate of the right riveting component is pressed and fixed between the pressure plate of the right expansion assembly and the right end face of the heat dissipation base plate; at the same time, the two expansion sleeves of the left riveting component are respectively inserted into the two riveting holes on the left side, and the guard plate of the left riveting component is pressed and fixed between the pressure plate of the left expansion assembly and the left end face of the heat dissipation base plate; at the same time, the two heat dissipation base plates are just fixed between the guard plates of the right riveting component and the guard plates of the left riveting component.

[0049] S5. The piston rods of the two reciprocating impact cylinders of the right expansion assembly reciprocate and extend. The piston rods of the reciprocating impact cylinders drive the impact block to reciprocate and impact the annular end. When the annular end is impacted by the impact block, the annular end compresses the first spring. At the same time, the impact force is transmitted sequentially through the annular end, the force transmission rod and the conical head P, and finally to the expansion sleeve. When the expansion sleeve is under force, the material of the expansion sleeve expands radially and tightens in the riveting hole. When the impact block impacts the annular end for a set time, the controller controls the reciprocating impact cylinder to close, thereby using the right riveting part to fix the right ends of the two heat dissipation base plates together.

[0050] At the same time, the piston rods of the two reciprocating impact cylinders of the left expansion assembly are controlled to reciprocate and extend, thereby using the left riveting parts to fix the left ends of the two heat dissipation base plates together, and finally realize the riveting of the two heat dissipation base plates together to obtain a heat dissipation product.

[0051] S6. The specific steps for removing the heat dissipation product are as follows:

[0052] S61. The piston rod of the main cylinder of the right tensioning assembly retracts to the right. The piston rod drives the movable plate to move to the right. The movable plate drives the horizontal plate, push block, two first springs, two force transmission rods, two conical heads P and two reciprocating impact cylinders to move to the right. Under the elastic restoring force of the first spring, the annular end drives the force transmission rod and the conical head P to move to the right. At the same time, under the elastic restoring force of the second spring, the pressure plate moves to the right, thereby causing the pressure plate and the conical head P to separate from the riveting parts on the right side.

[0053] At the same time, the piston rod of the main cylinder controlling the left tensioning assembly retracts to the left, so that the pressure plate and the conical head P are separated from the riveting parts on the left.

[0054] S62. The worker removes the riveted heat dissipation product from the support plate;

[0055] S7. Workers can repeat steps S2 to S6 multiple times to obtain multiple heat dissipation products.

[0056] The present invention has the following advantages: it greatly reduces the riveting workload of workers and greatly improves the riveting efficiency of two heat dissipation substrates. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the structure of a heat dissipation substrate.

[0058] Figure 2 for Figure 1 Main section diagram;

[0059] Figure 3 for Figure 2 CC section view;

[0060] Figure 4 A schematic diagram showing that a riveting hole is drilled in the center of both the left and right end faces of the heat dissipation substrate;

[0061] Figure 5 for Figure 4 Main section diagram;

[0062] Figure 6 for Figure 5 DD sectional view;

[0063] Figure 7 This is a structural schematic diagram of the riveted component;

[0064] Figure 8 for Figure 7 Main section diagram;

[0065] Figure 9 This is a diagram showing a worker stacking two heat dissipation substrates sequentially on a tabletop.

[0066] Figure 10 A schematic diagram illustrating how to fix two heat sink substrates;

[0067] Figure 11 This is a schematic diagram showing the insertion of two expansion sleeves of a riveting component into the right-side riveting holes of two heat sink substrates.

[0068] Figure 12 This is a schematic diagram of the expansion rod structure;

[0069] Figure 13 This is a schematic diagram showing the insertion of the tapered head M of the expansion rod into the tapered hole of the upper expansion sleeve of the riveting component from right to left.

[0070] Figure 14 This is a schematic diagram showing the insertion of the tapered head M of the expansion rod into the tapered hole of the lower expansion sleeve of the riveting component from right to left.

[0071] Figure 15 This is a schematic diagram of riveting two heat sink substrates together.

[0072] Figure 16 A schematic diagram of the structure of a heat dissipation product obtained by riveting;

[0073] Figure 17 This is a schematic diagram of the structure of the present invention;

[0074] Figure 18 for Figure 17 A schematic diagram of the partial cross-section;

[0075] Figure 19 This is a schematic diagram showing the connection between the base column and the support plate of the present invention;

[0076] Figure 20 This is a schematic diagram of the right expansion assembly of the present invention;

[0077] Figure 21 for Figure 20 A schematic diagram of the partial cross-section;

[0078] Figure 22 This is a schematic diagram showing the connection between the ring-shaped end, the force transmission rod, and the conical head P.

[0079] Figure 23 for Figure 22 Main section diagram;

[0080] Figure 24 This is a schematic diagram showing the connection between the pressure plate, guide rod, fixed seat, second spring, and cantilever frame.

[0081] Figure 25 for Figure 24 A schematic diagram of the partial cross-section;

[0082] Figure 26 A schematic diagram illustrating the positioning of two heat dissipation substrates with rivet holes;

[0083] Figure 27 A schematic diagram illustrating how the first rivet is positioned and installed on the right expansion assembly;

[0084] Figure 28 A schematic diagram illustrating the positioning and installation of the second rivet onto the left tensioning assembly;

[0085] Figure 29 This is a schematic diagram showing the two expansion sleeves of the riveting component on the right being inserted into the two riveting holes on the right.

[0086] Figure 30 This is a schematic diagram showing the impact of an impact block on the annular end.

[0087] Figure 31 This is a diagram showing workers removing the riveted heat dissipation product from the support plate.

[0088] In the picture:

[0089] 1-Heat dissipation base plate, 2-Strip heat dissipation element, 3-Riveting hole, 4-Guard plate, 5-Expansion sleeve, 6-Conical hole, 7-Table, 8-Pressure head, 9-Handle, 10-Conical head M;

[0090] 11-Workbench, 12-Base column, 13-Support plate, 14-Left tensioning assembly, 15-Right tensioning assembly;

[0091] 16-Machine platform, 17-Cantilever frame, 18-Main cylinder, 19-Moving plate, 20-Push block, 21-Force transmission rod, 22-Conical head P, 23-Annular end, 24-First spring, 25-Horizontal plate, 26-Vertical plate, 27-Reciprocating impact cylinder, 28-Impact block;

[0092] 29-Fixed base, 30-Guide rod, 31-Pressure plate, 32-Through hole, 33-Second spring, 34-Horizontal guide rail, 35-Slider. Detailed Implementation

[0093] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0094] like Figures 17-25 As shown, a riveting device for a heat dissipation substrate for an AI server includes a base column 12 and a support plate 13 sequentially fixed on the surface of a workbench 11. The four outer end faces of the support plate 13 are flush with the four outer end faces of the heat dissipation substrate 1. A left tensioning component 14 and a right tensioning component 15 are respectively provided on the workbench 11 and on the left and right sides of the support plate 13. The left tensioning component 14 and the right tensioning component 15 have the same structure and are symmetrical about the support plate 13. A plurality of support legs supporting the ground are fixed on the bottom surface of the workbench 11.

[0095] The right expansion assembly 15 includes a machine base 16 and a cantilever frame 17 fixed on the workbench 11. A horizontally arranged main cylinder 18 is fixed inside the machine base 16. A movable plate 19 extending upward above the machine base 16 is fixed on the piston rod of the main cylinder 18. A push block 20 is fixed on the left end face of the extended end of the movable plate 19. A force transmission rod 21 slides through the movable plate 19 and is located above and below the push block 20. A conical head P22 and an annular end 23 are fixed on the left and right ends of the force transmission rod 21, respectively. A first spring 24 is sleeved on the outside of the force transmission rod 21. The left and right ends of the first spring 24 are fixed on the movable plate 19 and the annular end 23, respectively. The conical head P22 cooperates with the conical hole 6 of the expansion sleeve 5 of the riveting part.

[0096] A horizontal plate 25 extending directly above the machine base 16 is fixed on the right end face of the movable plate 19. A vertical plate 26 is fixed on the top surface of the horizontal plate 25. Two reciprocating impact cylinders 27 are fixed on the right end face of the vertical plate 26. The piston rods of the two reciprocating impact cylinders 27 pass through the vertical plate 26 and are connected to impact blocks 28 at their extended ends. The two impact blocks 28 are respectively opposed to the two annular ends 23 on the left and right.

[0097] The right tensioning assembly 15 also includes a fixed base 29 fixed to the top of the cantilever frame 17. Multiple guide rods 30 are slidably installed in the fixed base 29. A downwardly extending pressure plate 31 is fixed between the left ends of the multiple guide rods 30. Two through holes 32 are opened in the pressure plate 31. The two through holes 32 are respectively sleeved on the outside of the two force transmission rods 21. A second spring 33 is sleeved on the guide rods 30. The left and right ends of the second spring 33 are respectively fixed on the pressure plate 31 and the fixed base 29. Under the elastic force of the second spring 33, the pressure plate 31 abuts against the right end face of the push block 20.

[0098] The movable plate 19 has two light holes corresponding to the two force transmission rods 21, and the two force transmission rods 21 are slidably installed in the two light holes. A horizontal guide rail 34 is fixed on the top surface of the machine base 16, and a slider 35 is fixed on the bottom surface of the horizontal plate 25, and the slider 35 is installed on the horizontal guide rail 34.

[0099] The riveting device also includes a controller, which is electrically connected to the reciprocating impact cylinder 27 and the main cylinder 18 via a signal line. The worker can control the piston rod of the main cylinder 18 to extend through the controller, and at the same time, control the piston rod of the reciprocating impact cylinder 27 to perform reciprocating extension and retraction movements, thereby causing the impact block 28 to reciprocate to impact the annular end 23.

[0100] A riveting method for a heat dissipation substrate used in AI servers includes the following steps:

[0101] S1. Using CNC machining equipment, a riveting hole 3 is drilled in the center of the left and right end faces of a batch of heat dissipation substrates 1, such as... Figures 4-6 The diagram shows a riveting hole 3 drilled in the center of both the left and right end faces of the heat dissipation substrate 1.

[0102] S2. Position the two heat dissipation substrates 1 with riveting holes 3. The specific operation steps are as follows:

[0103] S21. The worker takes out two heat dissipation substrates 1 with rivet holes 3;

[0104] S22. The worker stacks two heat dissipation substrates 1 sequentially on the top surface of the support plate 13. The worker adjusts the position of the heat dissipation substrates 1 to ensure that the four outer end faces of the lower heat dissipation substrate 1 are flush with the four outer end faces of the support plate 13, and at the same time, ensures that the four outer end faces of the upper heat dissipation substrate 1 are flush with the four outer end faces of the lower heat dissipation substrate 1. This achieves the positioning of the two heat dissipation substrates 1 with riveting holes 3. Figure 26 As shown, at this time, the right riveting holes 3 of the two heat dissipation substrates 1 are respectively facing the two conical heads P22 of the right expansion assembly 15, and at the same time, the left riveting holes 3 of the two heat dissipation substrates 1 are respectively facing the two conical heads P22 of the left expansion assembly 14.

[0105] S3. Position and install the two rivet components on the right expansion assembly 15 and the left expansion assembly 14 respectively. The specific operation steps are as follows:

[0106] S31, The worker took out two such... Figures 7-8 The riveted parts shown;

[0107] S32. The two tapered holes 6 of the two expansion sleeves 5 of a rivet are respectively fitted onto the two tapered heads P22 of the right expansion assembly 15, and the guard plate 4 of the rivet is placed against the right end face of the pressure plate 31, thereby positioning and installing the first rivet on the right expansion assembly 15. Figure 27 As shown, at this time, the two expansion sleeves 5 of the riveting component are respectively opposite to the two riveting holes 3 on the right side;

[0108] S33. The worker repeats step S32 once to position and install the second riveted part onto the left expansion assembly 14, as follows. Figure 28 As shown, at this time, the two expansion sleeves 5 of the riveting component are respectively opposite to the two riveting holes 3 on the left side;

[0109] S4. The piston rod of the main cylinder 18 of the right tensioning assembly 15 extends to the left, and the piston rod drives the movable plate 19 to move to the left. The movable plate 19 drives the horizontal plate 25, the push block 20, the two first springs 24, the two force transmission rods 21, the two conical heads P22 and the two reciprocating impact cylinders 27 to move to the left. The push block 20 pushes the pressure plate 31 to move to the left in sync. The pressure plate 31 stretches the second spring 33 to the left, and the pressure plate 31 also drives the riveting parts to move to the left in sync. The two expansion sleeves 5 of the riveting parts move towards the two riveting holes 3 on the right side respectively.

[0110] At the same time, the piston rod of the main cylinder 18 controlling the left expansion assembly 14 extends to the right, thereby causing the rivet installed on the left expansion assembly 14 to move to the right, and the two expansion sleeves 5 of the rivet move toward the two rivet holes 3 on the left side respectively.

[0111] When the piston rods of the main cylinder 18 of the right expansion assembly 15 and the left expansion assembly 14 are fully extended, the two expansion sleeves 5 of the right-side riveting component are respectively inserted into the two riveting holes 3 on the right side, as follows. Figure 29 As shown, the protective plate 4 of the right-side riveting component is pressed and fixed between the pressure plate 31 of the right expansion assembly 15 and the right end face of the heat dissipation substrate 1; simultaneously, the two expansion sleeves 5 of the left-side riveting component are respectively inserted into the two riveting holes 3 on the left side, and the protective plate 4 of the left-side riveting component is pressed and fixed between the pressure plate 31 of the left expansion assembly 14 and the left end face of the heat dissipation substrate 1, as shown. Figure 29 As shown; simultaneously, the two heat dissipation base plates 1 are precisely fixed between the protective plate 4 of the right riveting component and the protective plate 4 of the left riveting component, as shown. Figure 29 As shown;

[0112] S5. The piston rods of the two reciprocating impact cylinders 27 of the right expansion assembly 15 reciprocate and extend. The piston rods of the reciprocating impact cylinders 27 drive the impact block 28 to reciprocate and impact the annular end 23. When the annular end 23 is impacted by the impact block 28, as... Figure 30 As shown, the annular end 23 compresses the first spring 24. At the same time, the resulting impact force is transmitted sequentially through the annular end 23, the force transmission rod 21, and the conical head P22, and finally to the expansion sleeve 5. When the expansion sleeve 5 is subjected to force, the material of the expansion sleeve 5 expands radially and tightens in the riveting hole 3. When the impact block 28 impacts the annular end 23 for a set time, the controller controls the reciprocating impact cylinder 27 to close, thereby using the right-side riveting piece to fix the right ends of the two heat dissipation base plates 1 together.

[0113] Simultaneously, the piston rods of the two reciprocating impact cylinders 27 controlling the left tensioning assembly 14 reciprocate and extend, thereby using the left-side riveting component to fix the left ends of the two heat dissipation base plates 1 together, ultimately achieving the riveting of the two heat dissipation base plates 1 together, thus obtaining a heat dissipation product. The structure of the heat dissipation product is as follows: Figure 16 As shown;

[0114] In step S3, the worker first positions and installs the two riveting components on the right expansion assembly 15 and the left expansion assembly 14, respectively. Then, in step S4, the piston rods of the main cylinder 18 of the right expansion assembly 15 and the main cylinder 18 of the left expansion assembly 14 are extended, so that the two expansion sleeves 5 of the right riveting component are inserted into the two riveting holes 3 on the right side, and at the same time, the two expansion sleeves 5 of the left riveting component are inserted into the two riveting holes 3 on the left side. Then, in step S5, the piston rods of the reciprocating impact cylinder 27 of the right expansion assembly 15 and the reciprocating impact cylinder 27 of the left expansion assembly 14 are reciprocated and extended, so that the four impact blocks 28 impact the four annular ends 23 respectively, thereby finally riveting the two heat dissipation substrates 1 together to obtain the heat dissipation product.

[0115] Therefore, it can be seen that this riveting device can simultaneously tighten the two expansion sleeves 5 of two riveted parts at one time, that is, it can simultaneously tighten four expansion sleeves 5 at one time, compared to... Figures 9-15 The tightening method shown eliminates the need for four tightening processes to rivet the two heat dissipation substrates 1 together, thus enabling the riveting of the two heat dissipation substrates 1 together in a short time. This greatly improves the riveting efficiency of the two heat dissipation substrates 1 and also increases the production output of heat dissipation products, meeting customer demand for heat dissipation products.

[0116] S6. The specific steps for removing the heat dissipation product are as follows:

[0117] S61. The piston rod of the main cylinder 18 of the right tensioning assembly 15 retracts to the right, and the piston rod drives the movable plate 19 to move to the right. The movable plate 19 drives the horizontal plate 25, the push block 20, the two first springs 24, the two force transmission rods 21, the two conical heads P22 and the two reciprocating impact cylinders 27 to move to the right. Under the elastic restoring force of the first spring 24, the annular end 23 drives the force transmission rods 21 and the conical head P22 to move to the right. At the same time, under the elastic restoring force of the second spring 33, the pressure plate 31 moves to the right, thereby causing the pressure plate 31 and the conical head P22 to separate from the riveting parts on the right side.

[0118] At the same time, the piston rod of the main cylinder 18 of the left tensioning assembly 14 is retracted to the left so that the pressure plate 31 and the conical head P22 are separated from the riveting parts on the left.

[0119] S62. The worker removes the riveted heat dissipation product from the support plate 13, in the direction of removal as follows: Figure 31 As indicated by the middle arrow;

[0120] S7. Workers can repeat steps S2 to S6 multiple times to obtain multiple heat dissipation products.

[0121] Furthermore, this riveting device, through the coordinated operation of the main cylinder 18 of the right expansion assembly 15 or the left expansion assembly 14 and the reciprocating impact cylinder 27, can automatically and quickly expand the expansion sleeve 5 of the riveted part into the riveting hole 3 of the heat dissipation base plate 1, which is significantly faster than in a workshop. Figures 9-15 The riveting method shown eliminates the need for workers to manually insert the tapered head M10 of the expansion rod into the tapered hole 6 of the expansion sleeve 5, or to use a hammer to repeatedly strike the right end of the handle 9 of the expansion rod to tighten the expansion sleeve 5 into the riveting hole 3. Instead, it automatically and quickly tightens the expansion sleeve 5 into the riveting hole 3. This not only greatly reduces the riveting workload of workers, but also greatly improves the riveting efficiency of the two heat dissipation substrates 1.

Claims

1. A riveting method for a heat dissipation substrate for an AI server, the method employing a riveting device for a heat dissipation substrate for an AI server, the riveting device comprising a base column (12) and a support plate (13) sequentially fixed on the table surface of a workbench (11), a left tensioning component (14) and a right tensioning component (15) respectively provided on the table surface of the workbench (11) and on the left and right sides of the support plate (13), the left tensioning component (14) and the right tensioning component (15) having the same structure; The right expansion assembly (15) includes a machine base (16) and a cantilever frame (17) fixed on the workbench (11). A horizontally arranged main cylinder (18) is fixed inside the machine base (16). A movable plate (19) extending upward above the machine base (16) is fixed on the piston rod of the main cylinder (18). A push block (20) is fixed on the left end face of the extended end of the movable plate (19). A force transmission rod (21) slides through the movable plate (19) above and below the push block (20). A conical head P (22) and an annular end (23) are fixed on the left and right ends of the force transmission rod (21), respectively. A first spring (24) is sleeved on the outside of the force transmission rod (21). The left and right ends of the first spring (24) are fixed on the movable plate (19) and the annular end (23), respectively. A horizontal plate (25) extending directly above the machine base (16) is fixed on the right end face of the movable plate (19). A vertical plate (26) is fixed on the top surface of the horizontal plate (25). Two reciprocating impact cylinders (27) are fixed on the right end face of the vertical plate (26). The piston rods of the two reciprocating impact cylinders (27) pass through the vertical plate (26) and are connected to impact blocks (28) at their extended ends. The two impact blocks (28) are respectively opposed to the two annular ends (23) on the left and right. The right expansion assembly (15) also includes a fixed seat (29) fixed to the top of the cantilever (17). Multiple guide rods (30) are slidably installed in the fixed seat (29). A downwardly extending pressure plate (31) is fixed between the left ends of the multiple guide rods (30). Two through holes (32) are opened in the pressure plate (31). The two through holes (32) are respectively sleeved on the outside of the two force transmission rods (21). A second spring (33) is sleeved on the guide rod (30). The left and right ends of the second spring (33) are respectively fixed on the pressure plate (31) and the fixed seat (29). Under the elastic force of the second spring (33), the pressure plate (31) abuts against the right end face of the push block (20). The movable plate (19) has two light holes corresponding to the two force transmission rods (21), and the two force transmission rods (21) are slidably installed in the two light holes respectively; a horizontal guide rail (34) is fixed on the top surface of the machine base (16), and a slider (35) is fixed on the bottom surface of the horizontal plate (25), and the slider (35) is installed on the horizontal guide rail (34); the left tensioning assembly (14) and the right tensioning assembly (15) are symmetrical about the support plate (13), characterized in that: The method includes the following steps: S1. Drill a riveting hole (3) in the center of the left and right end faces of a batch of heat dissipation substrates (1) using CNC machining equipment. S2. Position the two heat dissipation substrates (1) with riveting holes (3). The specific operation steps are as follows: S21. The worker takes out two heat dissipation substrates (1) with rivet holes (3). S22. The worker stacks two heat dissipation substrates (1) sequentially on the top surface of the support plate (13). The worker adjusts the position of the heat dissipation substrates (1) to ensure that the four outer end faces of the lower heat dissipation substrate (1) are flush with the four outer end faces of the support plate (13). At the same time, the worker ensures that the four outer end faces of the upper heat dissipation substrate (1) are flush with the four outer end faces of the lower heat dissipation substrate (1), thereby achieving the positioning of the two heat dissipation substrates (1) with rivet holes (3). At this time, the right rivet holes (3) of the two heat dissipation substrates (1) face the two conical heads P (22) of the right expansion assembly (15), and the left rivet holes (3) of the two heat dissipation substrates (1) face the two conical heads P (22) of the left expansion assembly (14). S3. Position and install the two rivet parts on the right expansion assembly (15) and the left expansion assembly (14) respectively. The specific operation steps are as follows: S31. The worker removes two riveted parts; S32. The tapered holes (6) of the two expansion sleeves (5) of a rivet are respectively fitted onto the two tapered heads P (22) of the right expansion assembly (15), and the guard plate (4) of the rivet is placed against the right end face of the pressure plate (31), thereby realizing the positioning and installation of the first rivet on the right expansion assembly (15). At this time, the two expansion sleeves (5) of the rivet are respectively opposite to the two rivet holes (3) on the right side. S33. The worker repeats step S32 once to position and install the second rivet on the left expansion assembly (14). At this time, the two expansion sleeves (5) of the rivet are respectively opposite to the two rivet holes (3) on the left side. S4. The piston rod of the main cylinder (18) of the right expansion assembly (15) extends to the left, and the piston rod drives the movable plate (19) to move to the left. The movable plate (19) drives the horizontal plate (25), the push block (20), the two first springs (24), the two force transmission rods (21), the two conical heads P (22) and the two reciprocating impact cylinders (27) to move to the left. The push block (20) pushes the pressure plate (31) to move to the left in sync. The pressure plate (31) stretches the second spring (33) to the left. The pressure plate (31) also drives the riveting parts to move to the left in sync. The two expansion sleeves (5) of the riveting parts move toward the two riveting holes (3) on the right side respectively. At the same time, the piston rod of the main cylinder (18) controlling the left expansion assembly (14) extends to the right, thereby causing the rivet installed on the left expansion assembly (14) to move to the right, and the two expansion sleeves (5) of the rivet move toward the two rivet holes (3) on the left side respectively; When the piston rods of the main cylinder (18) of the right expansion assembly (15) and the left expansion assembly (14) are fully extended, the two expansion sleeves (5) of the right riveting component are respectively inserted into the two riveting holes (3) on the right side, and the guard plate (4) of the right riveting component is pressed and fixed between the pressure plate (31) of the right expansion assembly (15) and the right end face of the heat dissipation substrate (1); at the same time, the two expansion sleeves (5) of the left riveting component are respectively inserted into the two riveting holes (3) on the left side, and the guard plate (4) of the left riveting component is pressed and fixed between the pressure plate (31) of the left expansion assembly (14) and the left end face of the heat dissipation substrate (1); at the same time, the two heat dissipation substrates (1) are just fixed between the guard plate (4) of the right riveting component and the guard plate (4) of the left riveting component. S5. Control the piston rods of the two reciprocating impact cylinders (27) of the right expansion assembly (15) to perform reciprocating extension and retraction movements. The piston rods of the reciprocating impact cylinders (27) drive the impact block (28) to reciprocate the impact on the annular end (23). When the annular end (23) is impacted by the impact block (28), the annular end (23) compresses the first spring (24). At the same time, the impact force generated is transmitted sequentially through the annular end (23), the force transmission rod (21), and the conical head P (22) to the expansion sleeve (5). When the expansion sleeve (5) is under force, the material of the expansion sleeve (5) expands radially and is tightened in the riveting hole (3). When the impact block (28) impacts the annular end (23) for a set time, the controller controls the reciprocating impact cylinder (27) to close, thereby using the right riveting component to fix the right ends of the two heat dissipation base plates (1) together. At the same time, the piston rods of the two reciprocating impact cylinders (27) of the left expansion assembly (14) are controlled to perform reciprocating extension and retraction movements, thereby using the left riveting parts to fix the left ends of the two heat dissipation base plates (1) together, and finally realize the riveting of the two heat dissipation base plates (1) together, thus obtaining a heat dissipation product. S6. The specific steps for removing the heat dissipation product are as follows: S61. The piston rod of the main cylinder (18) of the right tensioning assembly (15) retracts to the right, and the piston rod drives the movable plate (19) to move to the right. The movable plate (19) drives the horizontal plate (25), the push block (20), the two first springs (24), the two force transmission rods (21), the two conical heads P (22) and the two reciprocating impact cylinders (27) to move to the right. Under the elastic restoring force of the first spring (24), the annular end (23) drives the force transmission rod (21) and the conical head P (22) to move to the right. At the same time, under the elastic restoring force of the second spring (33), the pressure plate (31) moves to the right, thereby causing the pressure plate (31) and the conical head P (22) to separate from the riveting parts on the right side. At the same time, the piston rod of the main cylinder (18) of the left tensioning assembly (14) retracts to the left so that the pressure plate (31) and the conical head P (22) are separated from the riveting parts on the left. S62. The worker removes the riveted heat dissipation product from the support plate (13); S7. Workers can repeat steps S2 to S6 multiple times to obtain multiple heat dissipation products.

2. The riveting method of a heat dissipation substrate for an AI server according to claim 1, characterized in that: The four outer end faces of the support plate (13) are flush with the four outer end faces of the heat dissipation substrate (1).

3. The riveting method of a heat dissipation substrate for an AI server according to claim 2, characterized in that: The bottom surface of the workbench (11) is fixed with multiple support legs that are supported on the ground.

4. The riveting method for a heat dissipation substrate for an AI server according to claim 3, characterized in that: The tapered head P (22) is engaged with the tapered hole (6) of the expansion sleeve (5) of the riveting component.

5. The riveting method of a heat dissipation substrate for an AI server according to claim 4, characterized in that: The riveting device also includes a controller, which is electrically connected to the reciprocating impact cylinder (27) and the main cylinder (18) via a signal line.

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