Manufacturing method of DC brushless water pump

Abstract

This invention discloses a manufacturing method for a DC brushless water pump, comprising the following steps: 1. Component processing; 2. Welding and installation of heat sinks and the pump body; 3. Assembly of the reinforcing sleeve and the pump body; 4. Assembly of the U-shaped mounting bracket and the pump body. The invention features a clever and reasonable structural design, employing an auxiliary device to assist in the welding operation between the heat sinks and the pump body. This allows for simultaneous and precise positioning of multiple heat sinks on the same side of the pump body, followed by welding between these heat sinks and the pump body. This effectively improves work efficiency, reduces workload, and achieves precise positioning of the heat sinks on the pump body, significantly improving welding accuracy and quality. It also facilitates the subsequent precise installation of the U-shaped mounting bracket onto the pump body, effectively ensuring overall quality.

Description

Technical Field

[0001] This invention belongs to the field of water pump technology, and specifically relates to a method for manufacturing a DC brushless water pump. Background Technology

[0002] Brushless DC water pumps utilize the principle of permanent magnet brushless DC motors, adding an impeller to the rotor and designing the outer casing as a cavity that causes centrifugal motion of the liquid. Because there is no carbon brush friction, no sparks are generated; they are highly efficient, consume little power, have a longer lifespan than brushed motors, and are quieter. Existing brushless DC water pumps typically have heat dissipation fins on the outer side of the pump body, which are welded to the casing. Due to the large number of heat dissipation fins, multiple positioning and welding processes are required during the welding operation, resulting in a large workload and generally lower welding precision, which can affect the installation of other external components of the brushless DC water pump body. Summary of the Invention

[0003] The purpose of this invention is to provide a technical solution for manufacturing a DC brushless water pump, addressing the shortcomings of existing technologies. The invention features a clever and reasonable structural design, employing an auxiliary device to assist in the welding process between the heat sink and the pump body. This allows for the simultaneous and precise positioning of multiple heat sinks on the same side of the pump body, followed by welding between these heat sinks and the pump body. This effectively improves work efficiency, reduces workload, and achieves precise positioning of the heat sinks on the pump body, thereby enhancing welding accuracy and quality. It also facilitates the precise installation of the U-shaped mounting bracket onto the pump body, effectively ensuring overall quality.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] The manufacturing method of a DC brushless water pump includes the following steps:

[0006] 1. Component machining:

[0007] (1) Process the corresponding water pump body, reinforcing sleeve and U-shaped mounting bracket according to the design drawings; the reinforcing sleeve can reinforce and protect the inlet and outlet pipes on the water pump body, and at the same time strengthen and reinforce the inlet and outlet pipes to improve the structural strength and structural firmness, so that the impact resistance of the inlet and outlet pipes is better, effectively preventing deformation and leakage at the inlet and outlet pipes, reducing subsequent maintenance costs and extending the service life of the entire DC brushless water pump;

[0008] (2) Process the heat sink according to the design dimensions, and punch holes on the surface of the heat sink to form heat dissipation holes according to the design requirements; the design of heat dissipation holes can increase the heat dissipation effect of the heat sink.

[0009] 2. Welding and installation of the heat sink and water pump body:

[0010] (1) Positioning and fixing of the water pump body:

[0011] a. An auxiliary device is used to assist in the welding of the water pump body and the heat sink. The auxiliary device includes a rotating frame, a main support, and a limiting frame. The main support is located on the rotating frame, and the limiting frame is located on one side of the main support. The limiting frame is provided with mounting holes, which allow it to be fixed to the placement surface, ensuring the structural stability of the entire auxiliary device. At the same time, the limiting frame can also serve as a limiting component during the rotation of the rotating frame. When the rotating frame touches the side of the limiting frame, the rotating frame rotates into place, facilitating subsequent rotation adjustment of the rotating frame. An auxiliary support is located at the center of the limiting frame. The auxiliary support is fixedly connected to the main support, and the auxiliary support and the main support are fixedly connected as a whole to ensure the overall load-bearing capacity and ensure the stable support and placement of the water pump body. The rotating frame is equipped with a clamping assembly.

[0012] b. Place the water pump body on the main support and auxiliary support. The rear end face of the water pump body should abut against the side plate on the main support. Adjust the positioning post at the top of the side plate and loosen the first clamping screw. The positioning post will move down, and at the same time, adjust the position of the water pump body on the main support until the positioning post corresponds to the threaded hole on the water pump body. Rotate the positioning post downwards so that the bottom end of the positioning post is screwed into the threaded hole. Then tighten the first clamping screw. The bottom end of the positioning post is provided with an external thread section that matches the threaded hole (not shown in the figure). The positioning post is fixed to the side plate by the first clamping screw. When it is necessary to adjust the positioning post, simply loosen the first clamping screw. The design is ingenious and reasonable, and the adjustment is convenient and simple. The main support and auxiliary support together support the water pump body, ensuring the stability and reliability of the water pump body on the auxiliary device. The water pump body abuts against the side plate, and with the threaded hole on the water pump body and the positioning post on the side plate, the water pump body is further precisely positioned, effectively ensuring the balance and stability of the water pump body on the main support and auxiliary support, and making it easier to operate in subsequent steps.

[0013] c. Adjust the top clamping component on the side plate. The top clamping component includes a connecting screw and a top clamping plate. The connecting screw is fixed to the top of the side plate by two clamping nuts. Loosen the clamping nuts and move the connecting screw downwards. The connecting screw will drive the top clamping plate downwards until the top clamping plate presses against the top surface of the water pump body. Then tighten the clamping nuts. When the water pump body is accurately positioned on the main support or auxiliary support, the top clamping plate will press and fix the water pump body to ensure the stability of the water pump body on the main support or auxiliary support. The top clamping component has a clever and reasonable structural design. It is convenient and simple to use and adjust. Loosening the clamping nuts and moving the connecting screw can adjust the position of the top clamping plate to achieve pressing or releasing of the top of the water pump body.

[0014] d. Adjust the side clamping components on the limiting frame. There are two sets of side clamping components, which are respectively located on both sides of the auxiliary support. Each side clamping component includes a side clamping plate, an adjusting screw, and a limiting nut. The side clamping plate is slidably sleeved on the adjusting screw and simultaneously slidably engaged with the limiting frame. The side clamping plate is fixed to the adjusting screw by the two limiting nuts on the left and right. Loosen the limiting nuts and move the side clamping plate towards the water pump body until the side clamping plate is pressed against the corresponding side of the water pump body. Then tighten the limiting nuts. After the top of the water pump body is pressed, the two side clamping components further clamp and fix it from both sides of the water pump body, further limiting the water pump body and ensuring the firmness and reliability of the water pump body. This prevents the water pump body from shifting and affecting the subsequent installation and positioning between the heat sink and the water pump body.

[0015] (2) Welding of one side of the heat sink to the water pump body:

[0016] a. Four sets of heat dissipation fins are installed on the water pump body. The four sets of heat dissipation fins are distributed in pairs and symmetrically arranged on both sides of the water pump body. Each set of heat dissipation fins includes three heat dissipation fins. The heat dissipation fins on one side of the water pump body are welded and assembled first. There are two sets of heat dissipation fins on each side of the water pump body, and each set of heat dissipation fins includes three heat dissipation fins. The design of multiple heat dissipation fins effectively ensures the actual heat dissipation effect. At the same time, after the two sets of heat dissipation fins on each side are welded and fixed to the water pump body, a limiting groove is formed between the two sets of heat dissipation fins on the same side of the water pump body. This facilitates the precise installation and positioning of the U-shaped mounting bracket on the water pump body. The U-shaped mounting bracket achieves a stable installation between the water pump and the mounting surface, ensuring the structural strength and firmness of the water pump after installation.

[0017] b. Take six heat sinks, divide them into two groups of three. The fixture assembly includes a positioning fixture and a fixing fixture. A support plate 1 and a support plate 2 are mounted on the rotating frame. The positioning fixture is fixed to support plate 1. There are two sets of positioning fixtures, each corresponding to one heat sink group. The positioning fixture includes a frame and positioning blocks. There are six positioning blocks, evenly divided into two groups (three per group), symmetrically arranged on the frame. The frame is fixed to support plate 1. Slots are provided on the opposite surfaces of the two corresponding positioning blocks. These slots match the heat sinks, thus ensuring that each... The positioning fixture can be used to position the three heat sinks in a heat sink group. The two heat sink groups are inserted into the two positioning fixtures respectively, and the heat sinks are inserted and limited in the slots of the two corresponding positioning blocks. Two heat sink groups (six heat sinks) need to be installed on the side of the water pump body on the same side. Each heat sink group corresponds to a positioning fixture, so that the three heat sinks in each heat sink group are accurately engaged in the positioning blocks of the positioning fixture. The design is ingenious and reasonable. The two positioning fixtures can achieve the initial accurate engagement and positioning of all heat sinks on the same side, which can effectively improve work efficiency.

[0018] c. A limiting screw is installed on each heat sink group, and the limiting screw matches the heat dissipation hole. Each heat sink has two heat dissipation holes distributed vertically. Two limiting screws are installed on each heat sink group, and the limiting screws pass horizontally through the heat dissipation holes through the three heat sinks on the heat sink group. The position of the limiting screws is adjusted so that both ends of the limiting screws extend out of the corresponding heat sink group. Two limiting screws are installed on each heat sink group, and the limiting screws pass through the corresponding heat dissipation holes on the heat sinks in the same heat sink group, connecting the heat sinks in the same group in series.

[0019] d. A slide rail is provided between the frame and the second support plate. A sliding frame is slidably engaged on the slide rail. A push cylinder is provided on the second support plate and is connected to the sliding frame. Two sets of guide rods are provided on the sliding frame, and two sets of fixing clamps are provided. A set of fixing clamps is slidably provided on each set of guide rods. The fixing clamps are connected to the lifting column, which is fixed on the sliding frame. The fixing clamps include a base frame and a limiting plate. The base frame is slidably mounted on the guide rods, and the limiting plate is fixed to the base frame. There are six limiting plates, which are evenly divided into two groups arranged vertically (three limiting plates form a group, corresponding to the three heat sinks on the heat sink group). Each limiting plate includes two limiting plates arranged horizontally. The gap between the two limiting plates matches the heat sink. An open slot is provided on the limiting plate, which matches the limiting screw. The open slot facilitates the subsequent engagement and limiting of the limiting plate and the limiting screw.

[0020] e. The lifting column starts and drives the base frame to move downward along the guide rod column. The base frame drives the fixed limiting plate to move downward synchronously until the limiting plate is engaged and limited on the corresponding limiting screw through the open slot. At the same time, the heat sink is also limited and locked between the two limiting plates of the corresponding limiting plate. Then, fastening nuts are screwed into both ends of the limiting screw and tightened. The lifting column drives the fixing clamp to move downward, so that the limiting plate is engaged on the corresponding limiting screw. At the same time, the corresponding heat sink is just locked and locked within the gap between the two limiting plates of the corresponding limiting plate. Then, the two ends of the limiting screw are limited and fixed by the fastening nuts, so that the limiting screw cannot be removed from the heat sink assembly, ensuring the installation firmness between the limiting screw and the heat sink assembly.

[0021] f. The fixing fixture is equipped with a locking component. By adjusting the locking component, the bottom opening of the slot is limited and blocked, so that the limiting screw is limited and fixed in the slot. The locking component also limits and blocks the bottom of the slot, so that the limiting screw is limited and fixed in the corresponding slot and cannot move up or down. With the help of the fastening nut, the two ends of the limiting screw are limited and fixed, thus limiting and fixing the heat sink, the limiting screw and the limiting plate into a whole. This facilitates the subsequent movement of the heat sink and ensures that the heat sink will not move during movement.

[0022] g. The jacking cylinder is activated, pushing the sliding frame to move along the slide rail. The sliding frame drives the fixing fixture to move towards the water pump body. The fixing fixture simultaneously drives the heat sink to move, causing the heat sink to gradually move out of the positioning fixture until the heat sink abuts and adheres to the corresponding side of the water pump body. At this point, the jacking cylinder stops moving. The jacking cylinder pushes the sliding frame to move, realizing the movement of the fixing fixture, thereby moving the heat sink to abut against the side of the water pump body, achieving precise positioning of the heat sink on the water pump body. Moreover, the jacking cylinder jacking operation is automated, improving work efficiency and reducing manual labor intensity.

[0023] h. Welding operation: Welding operation is carried out at the connection between the heat sink and the water pump body using welding equipment;

[0024] (3) Welding of the heat sink to the pump body on the other side;

[0025] a. After the two sets of heat sinks on one side of the water pump body are welded, adjust the locking component so that the locking component moves out from the bottom opening of the slot, then unscrew the fastening nut and remove the limit screw from the corresponding heat sink assembly; move the locking component out from the slot and then remove the fastening nut to facilitate the removal of the limit screw from the heat sink assembly.

[0026] b. The push cylinder is started. The push cylinder drives the fixed clamp to move away from the water pump body and reset through the sliding frame. Then the lifting column is started to drive the fixed clamp to move up and reset. The fixed clamp is moved and reset by the push cylinder and the lifting column, which facilitates the welding and positioning operation of the heat sink on the other side.

[0027] c. Rotate the rotating frame and rotate the entire clamp assembly 180° to the other side of the water pump body. When the water pump body touches the side of the limiting frame, the rotating frame rotates into place. Then, follow steps b to h in step (2) of step 2 above to perform the welding operation of the heat sink on the other side.

[0028] d. After the heat sink on the other side is welded, remove the water pump body with the welded heat sink from the auxiliary device; 3. Assembly of the reinforcing sleeve and the water pump body: Install the reinforcing sleeve onto the inlet pipe and outlet pipe of the water pump body; reinforce and protect the inlet pipe with the first reinforcing sleeve, and reinforce and protect the outlet pipe with the second reinforcing sleeve. At the same time, the inlet and outlet pipes are reinforced and strengthened to improve the structural strength and structural firmness, so that the impact resistance of the inlet and outlet pipes is better, effectively preventing deformation and leakage at the inlet and outlet pipes, reducing subsequent maintenance costs, and extending service life;

[0029] 4. Assembly of U-shaped mounting bracket and water pump body: Install the U-shaped mounting bracket onto the water pump body. The U-shaped mounting bracket and the water pump body are detachable. The U-shaped mounting bracket ensures a stable installation between the water pump and the mounting surface, ensuring the structural strength and firmness of the water pump after installation.

[0030] Furthermore, in step 3 above, the installation steps for the reinforcing sleeve are as follows:

[0031] (1) The reinforcing sleeve includes a reinforcing sleeve one and a reinforcing sleeve two. A connecting rod one is provided on the reinforcing sleeve one, and a positioning rod is provided on the connecting rod one. A connecting rod two is provided on the reinforcing sleeve two, and a through hole is provided on the connecting rod two. The positioning rod matches the through hole.

[0032] (2) Place the reinforcing sleeve on the outside of the water inlet pipe of the water pump body. The connecting rod has a connecting hole. Adjust the position of the reinforcing sleeve on the water inlet pipe so that the connecting hole corresponds to the threaded hole of the water pump body. Then fix the connecting rod to the water pump body with screws. The end of the screw passes through the connecting hole and extends into the threaded hole. The threaded hole can facilitate the positioning and adjustment of the water pump body on the auxiliary device, and also facilitate the installation and fixing of the reinforcing sleeve and the water pump body.

[0033] (3) Place the reinforcing sleeve 2 on the outside of the water outlet pipe of the water pump body, adjust the reinforcing sleeve 2 so that the perforation corresponds to the positioning rod, and place the connecting rod 2 on the positioning rod through the perforation. Then screw the connecting nut into the end of the positioning rod and tighten it.

[0034] Furthermore, in step 4 above, the installation steps for the U-shaped mounting bracket are as follows:

[0035] (1) A limiting groove is formed between the two sets of heat sinks located on the same side of the water pump body, and the U-shaped mounting bracket is snapped onto the water pump body. The two ends of the U-shaped mounting bracket are snapped into the limiting groove.

[0036] (2) Next, connect the U-shaped bracket to the heat sink that is in direct contact. Both sides of the U-shaped bracket are provided with protrusions and fixing holes. The fixing holes correspond to the heat dissipation holes on the corresponding heat sink. Then, fix the heat sink that is in contact with the U-shaped bracket to the U-shaped bracket with bolts. The tail of the bolt passes through the protrusion, the heat sink and the mounting nut in sequence.

[0037] Furthermore, in step (2) of step 1 above, during the heat sink punching operation, at least two heat sinks are stacked at a time, and then the stacked heat sinks are punched simultaneously by the punching equipment. During each punching operation, multiple heat sinks are punched at the same time, which effectively speeds up the efficiency and ensures the consistency of the punching position.

[0038] Furthermore, in step f of step (2) of step 2 above, the adjustment steps of the locking component are as follows:

[0039] ① The locking assembly includes a locking bracket and a locking rod. The locking rod is fixedly connected to the locking bracket. The locking rod corresponds one-to-one with the limiting plate. The number of locking rods on the locking bracket is the same as the number of limiting plates on the fixing fixture. Each locking rod corresponds to one limiting plate. Thus, the opening end of the slot on each limiting plate can be limited and intercepted by the corresponding locking rod. The limiting plate is provided with a horizontal slot that is closed at one end. The horizontal slot passes through the slot. The locking rod is matched and inserted into the horizontal slot. The locking bracket is provided with an adjusting handle that is movably inserted into the base frame.

[0040] ② Move the adjusting handle. The adjusting handle drives the locking rod to move towards the corresponding open slot through the locking bracket until the locking rod moves to the closed end of the horizontal slot. The locking rod is laterally limited in the open slot, and at the same time, the locking rod is limited and supported on the bottom surface of the limiting screw.

[0041] ③ At the same time, when the locking rod touches the closed end of the transverse slot, the bent section of the adjusting handle touches and adheres to the base frame. The bent section is equipped with a second clamping screw. Tightening the second clamping screw limits and fixes the adjusting handle to the base frame.

[0042] The structure is cleverly and reasonably designed. By adjusting the handle, the locking rod is pushed to move in the direction of the corresponding opening slot, so that the locking rod is laterally intercepted at the bottom of the opening slot. At the same time, the locking rod is limited and supported on the bottom surface of the limiting screw, which restricts the limiting screw from sliding out of the opening end of the opening slot, thereby improving the structural strength and stability.

[0043] Furthermore, in step a of step (3) of step 2 above, the adjustment steps of the locking assembly are as follows: loosen the second clamping screw, move the adjusting handle, and the adjusting handle drives the locking rod to move away from the opening slot through the locking bracket until the locking rod is completely removed from the corresponding opening slot. The operation is convenient and simple. Loosen the second clamping screw to loosen the adjusting handle from the base frame, and then move the adjusting handle to completely remove the locking rod from the opening slot. This facilitates the subsequent removal of the limit screw, the disengagement and reset of the fixing clamp from the heat sink, etc.

[0044] Furthermore, in step d of step (3) of step 2 above, the disassembly steps of the water pump body are as follows: ① Loosen the second tightening screw, move the adjusting handle, and the adjusting handle drives the locking rod to move away from the opening slot through the locking bracket until the locking rod is completely removed from the corresponding opening slot;

[0045] ②Unscrew the fastening nut and remove the limit screw from the corresponding heat sink assembly;

[0046] ③ The push cylinder is started, and the push cylinder drives the fixed clamp to move away from the water pump body and reset through the sliding frame;

[0047] ④ The lifting column starts, causing the fixing clamp to move upward and reset;

[0048] The overall pump body disassembly process is reasonable and scientific, and easy and simple to operate. Finally, the fixing fixture is reset, which facilitates the subsequent manufacturing and processing of the pump body.

[0049] Furthermore, in step c of step (3) of step 2 above, the rotation steps of the rotating frame are as follows: ① A rotating screw is provided on the rotating frame, and the rotating frame is rotatably connected to the main support through the rotating screw. A locking nut is provided at the end of the rotating screw. At the same time, pressure plate components are symmetrically provided on both sides of the limiting frame. The pressure plate components include pressure plates and clamping nuts. A limiting post is provided on the limiting frame. The pressure plate is movably sleeved on the limiting post. The clamping nut is provided at the end of the limiting post.

[0050] ② Adjust the pressure plate on the side closest to the rotating frame, loosen the clamping nut, and rotate the pressure plate completely off the rotating frame;

[0051] ③ Loosen the locking nut and rotate the rotating frame 180° around the rotating screw as the rotating axis, thereby rotating the entire clamp assembly to the other side of the water pump body. After the rotating frame is rotated into place, it will abut against the side of the limit frame.

[0052] ④ Adjust the pressure plate on the side closest to the rotating frame after rotation, loosen the clamping nut, rotate the pressure plate completely until it coincides with the rotating frame, and then tighten the clamping nut.

[0053] The pressure plate clamps and limits the rotating frame, effectively ensuring the structural strength and stability of the rotating frame after it has rotated to the correct position. Pressure plates are installed on both sides of the limiting frame, which can achieve clamping and limiting of the rotating frame at two different work positions. The rotating frame is supported on the bottom surface of the main support platform, and the rotating frame is rotatably connected to the main support platform, which facilitates the switching of the fixture assembly work positions. This allows for clamping and positioning of the heat sinks on both sides of the water pump body, facilitating welding operations.

[0054] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0055] This invention features a clever and reasonable structural design. It employs an auxiliary device to assist in the welding process between the heat sink and the pump body. This allows for the simultaneous and precise positioning of multiple heat sinks on the same side of the pump body, followed by welding between these heat sinks and the pump body. Once welding is complete on one side, the fixture assembly is rotated to the other side of the pump body using a rotating frame for positioning and welding of the heat sink on the other side. This significantly improves overall work efficiency, reduces workload, and ensures precise positioning of the heat sinks on the pump body, thereby enhancing welding accuracy and quality. This facilitates the subsequent precise installation of the U-shaped mounting bracket onto the pump body, effectively guaranteeing overall quality. Attached Figure Description

[0056] The present invention will be further described below with reference to the accompanying drawings:

[0057] Figure 1 This is a schematic diagram of the auxiliary device in this invention;

[0058] Figure 2 for Figure 1 A schematic diagram of the rear structure;

[0059] Figure 3 This is a schematic diagram of the structure of the present invention in the state when the water pump body is initially placed and positioned by the auxiliary device;

[0060] Figure 4 This is a schematic diagram of the structure of the present invention after the water pump body is positioned and fixed on the auxiliary device;

[0061] Figure 5 This is a schematic diagram of the structure of the present invention when the heat sink assembly is installed in the positioning fixture;

[0062] Figure 6 This is a schematic diagram of the structure of the present invention when the limiting screw is installed on the heat sink assembly;

[0063] Figure 7 This is a schematic diagram of the structure of the present invention when the positioning fixture has moved into place;

[0064] Figure 8 This is a schematic diagram of the state structure of the present invention when the locking assembly is in the locking limit position of the limiting screw;

[0065] Figure 9 This is a schematic diagram of the mounting structure of the fastening nut on the limiting screw of the present invention;

[0066] Figure 10 This is a schematic diagram of the structure of the present invention when the heat sink assembly and the water pump body are precisely positioned.

[0067] Figure 11 This is a schematic diagram of the structure of the present invention when the limiting screw is removed;

[0068] Figure 12 This is a schematic diagram of the structure of the present invention after the positioning fixture has been disengaged and reset from the heat sink assembly;

[0069] Figure 13 This is a schematic diagram of the structure of the present invention after the rotating frame station has been converted.

[0070] Figure 14 This is a schematic diagram of the structure of the present invention when the rotating frame is pressed and limited after the pressure plate has rotated to the correct position;

[0071] Figure 15This is a schematic diagram of the fixture assembly in this invention;

[0072] Figure 16 This is a schematic diagram of the installation structure of the positioning clamp on the rotating frame in this invention;

[0073] Figure 17 for Figure 16 A structural diagram from another perspective;

[0074] Figure 18 This is a schematic diagram of the connection structure between the fixing clamp and the sliding frame in this invention;

[0075] Figure 19 for Figure 18 Schematic diagram of the structure after the central fixed clamp has been moved down;

[0076] Figure 20 for Figure 18 A schematic diagram of the state structure of the locking assembly when the opening end of the locking limit opening slot is locked;

[0077] Figure 21 This is a schematic diagram of the locking assembly in this invention;

[0078] Figure 22 This is a schematic diagram of the structure of the U-shaped mounting bracket and the water pump body after assembly in this invention;

[0079] Figure 23 This is a schematic diagram of the structure of the water pump body in this invention;

[0080] Figure 24 This is a schematic diagram of the structure after the reinforcing sleeve and the water pump body are installed in this invention;

[0081] Figure 25 This is a schematic diagram of the U-shaped mounting bracket in this invention;

[0082] Figure 26 This is a schematic diagram of the structure of the reinforcing sleeve in this invention;

[0083] Figure 27 This is a schematic diagram of the structure of the reinforcing sleeve 2 in this invention.

[0084] In the diagram: 1-Rotating frame; 2-Main support; 3-Limiting frame; 4-Auxiliary support; 5-Clamping assembly; 6-Side plate; 7-Positioning column; 8-Securing screw 1; 9-Top clamping component; 10-Connecting screw; 11-Top clamping plate 11; 12-Clamping nut; 13-Side clamping component; 14-Side clamping plate; 15-Adjusting screw; 16-Limiting nut; 17-Water pump body; 18-Inlet pipe; 19 - Outlet pipe; 20- Reinforcing sleeve one; 21- Reinforcing sleeve two; 22- Connecting rod one; 23- Connecting rod two; 24- Positioning rod; 25- Through hole; 26- Connecting nut; 27- Connecting hole; 28- Threaded hole; 29- Screw; 30- Heat sink assembly; 31- Heat sink; 32- U-shaped mounting bracket; 33- Limiting groove; 34- Protrusion; 35- Heat dissipation hole; 36- Fixing hole; 37- Bolt; 38- 39-Fixing nut; 40-Fixing clamp; 41-Support plate one; 42-Support plate two; 43-Frame; 44-Positioning block; 45-Slot; 46-Limit screw; 47-Slide rail; 48-Sliding frame; 49-Push cylinder; 50-Guide rod column; 51-Lifting column; 52-Base frame; 53-Limit plate part; 54-Limit plate; 55-Gap; 56-Open slot; 5 7-Connecting nut; 58-Locking bracket; 59-Locking rod; 60-Horizontal slot; 61-Adjusting handle; 62-Bent section; 63-Securing screw two; 64-Rotating screw; 65-Locking nut; 66-Pressure plate; 67-Pressure plate; 68-Pressure nut; 69-Limiting post; 70-Support pad; 71-Mounting hole; 72-Embedded slide rod; 73-Fastening nut; 74-Locking assembly. Detailed Implementation

[0085] like Figures 1 to 27 The diagram illustrates a method for manufacturing the DC brushless water pump of the present invention, comprising the following steps:

[0086] 1. Component machining:

[0087] (1) The corresponding water pump body 17, reinforcing sleeve and U-shaped mounting bracket 32 ​​are processed according to the design drawings. The reinforcing sleeve can reinforce and protect the inlet pipe 18 and outlet pipe 19 on the water pump body 17. At the same time, the inlet and outlet pipes are reinforced and strengthened to improve the structural strength and structural firmness, so that the impact resistance of the inlet and outlet pipes 19 is better, effectively preventing deformation and leakage at the inlet and outlet pipes 19, reducing subsequent maintenance costs and extending the service life of the entire DC brushless water pump.

[0088] (2) Heat sink 31 is processed according to the design dimensions, and heat dissipation holes 35 are punched on the surface of heat sink 31 according to the design requirements; the design of heat dissipation holes 35 can increase the heat dissipation effect of heat sink 31. In the punching operation of heat sink 31, at least two heat sinks 31 are stacked at a time, and then the stacked heat sinks 31 are punched at the same time by the punching equipment. The punching operation of multiple heat sinks 31 is carried out at the same time during each punching operation, which effectively speeds up the efficiency and ensures the consistency of the punching position.

[0089] 2. Welding and installation of heat sink 31 and water pump body 17:

[0090] (1) Positioning and fixing of the water pump body 17:

[0091] a. An auxiliary device is used to assist in the welding of the water pump body 17 and the heat sink 31. The auxiliary device includes a rotating frame 1, a main support 2, and a limiting frame 3. The main support 2 is mounted on the rotating frame 1, and the limiting frame 3 is located on one side of the main support 2. The limiting frame 3 is provided with mounting holes 71, which allow it to be fixed to the placement surface, ensuring the structural stability of the entire auxiliary device. Simultaneously, the limiting frame 3 acts as a limiting element during the rotation of the rotating frame 1. When the rotating frame 1 abuts against the side of the limiting frame 3... The rotating frame 1 is rotated into position to facilitate subsequent rotation adjustment. An auxiliary support 4 is centrally located on the limiting frame 3. The auxiliary support 4 is fixedly connected to the main support 2, forming a unified structure to ensure overall load-bearing capacity and stable support for the pump body 17. The rotating frame 1 is equipped with a clamp assembly 5. b. The pump body 17 is supported on the main support 2 and the auxiliary support 4. The rear end face of the pump body 17 abuts against the side plate 6 on the main support 2. The top of the side plate 6 is adjusted. Loosen the locking screw 8 on the positioning post 7 of the pump body 17. Simultaneously adjust the position of the pump body 17 on the main support 2 until the positioning post 7 aligns with the threaded hole 28 on the pump body 17. Rotate the positioning post 7 downwards until its bottom end screws into the threaded hole 28. Then tighten the locking screw 8. The bottom end of the positioning post 7 has an external thread section (not shown in the figure) that matches the threaded hole 28. The positioning post 7 is fixed to the side plate 6 by the locking screw 8. When adjustment of the positioning post 7 is needed, tighten the locking screw 8. The design is ingenious and reasonable, and the adjustment is convenient and simple. The main support 2 and the auxiliary support 4 jointly support the water pump body 17, ensuring the stability and reliability of the water pump body 17 in the auxiliary device. The water pump body 17 abuts against the side plate 6, and the threaded hole 28 on the water pump body 17 and the positioning post 7 on the side plate 6 are used to achieve further precise positioning of the water pump body 17, effectively ensuring the balance and stability of the water pump body 17 on the main support 2 and the auxiliary support 4, and making it easier to operate in subsequent steps.

[0092] c. Adjust the top clamping component 9 on the side plate 6. The top clamping component 9 includes a connecting screw 10 and a top clamping plate 11. The connecting screw 10 is fixed to the top of the side plate 6 by two clamping nuts 12. Loosen the clamping nuts 12 and move the connecting screw 10 downward. The connecting screw 10 drives the top clamping plate 11 to move downward until the top clamping plate 11 abuts and presses against the top surface of the water pump body 17. Then tighten the clamping nuts 12. When the water pump body 17 is accurately positioned on the main support 2 and the auxiliary support 4, the top clamping plate 11 presses and fixes the water pump body 17 to ensure the firmness of the water pump body 17 on the main support 2 and the auxiliary support 4. The top clamping component 9 has a clever and reasonable structural design. It is convenient and simple to use and adjust. Loosening the clamping nuts 12 and moving the connecting screw 10 can adjust the position of the top clamping plate 11 and realize the pressing or releasing of the top of the water pump body 17.

[0093] d. Adjusting the side clamping member 13 on the limiting frame 3. Two sets of side clamping members 13 are provided, and the two sets of side clamping members 13 are respectively provided on both sides of the auxiliary support 4. The side clamping member 13 includes a side clamping plate 14, an adjusting screw 15, and a limiting nut 16. The side clamping plate 14 is slidably sleeved on the adjusting screw 15, and at the same time, the side clamping plate 14 is slidably engaged with the limiting frame 3. The side clamping plate 14 is provided with a locking groove, and the limiting frame 3 is provided with a locking slide rod 72. The locking groove matches the locking slide rod 72, and the side clamping plate 14 is slidably engaged with the locking slide rod 72 through the locking groove. The side clamping plate 14 is limited by the left and right sides. Nut 16 is fixed to the adjusting screw 15. Loosen the limiting nut 16 and move the side clamping plate 14 towards the water pump body 17 until the side clamping plate 14 is pressed against the corresponding side of the water pump body 17. Then tighten the limiting nut 16. After the top of the water pump body 17 is pressed, the two side clamping pieces 13 are used to further clamp and fix the water pump body 17 from both sides to further limit the water pump body 17, ensure the firmness and reliability of the water pump body 17, and prevent the water pump body 17 from shifting and affecting the subsequent installation and positioning between the heat sink 31 and the water pump body 17.

[0094] (2) Welding operation of one side heat sink 31 to water pump body 17:

[0095] a. Four sets of heat sinks 30 are provided on the water pump body 17. The four sets of heat sinks 30 are distributed in pairs and symmetrically arranged on both sides of the water pump body 17. Each set of heat sinks 30 includes three heat sinks 31. First, the heat sinks 31 on one side of the water pump body 17 are welded and assembled. There are two sets of heat sinks 30 on each side of the water pump body 17, and each set of heat sinks 30 includes three heat sinks 31. The design of multiple heat sinks 31 effectively ensures the actual heat dissipation effect. At the same time, after the two sets of heat sinks 30 on each side are welded and fixed to the water pump body 17, a limiting groove 33 is formed between the two sets of heat sinks 30 on the same side of the water pump body 17, so as to facilitate the precise installation and positioning of the U-shaped mounting bracket 32 ​​on the water pump body 17. The U-shaped mounting bracket 32 ​​realizes the stable installation between the water pump and the mounting surface, ensuring the structural strength and firmness of the water pump after installation.

[0096] b. Take six heat sinks 31, divide them into two groups of three. The clamping assembly 5 includes a positioning clamp 39 and a fixing clamp 40. The rotating frame 1 is provided with a support plate 1 41 and a support plate 2 42. The positioning clamp 39 is fixed on the support plate 1 41. There are two sets of positioning clamps 39, which correspond to the two heat sink groups 30. The positioning clamp 39 includes a frame 43 and positioning blocks 44. There are six positioning blocks 44, which are evenly divided into two groups (three per group) and symmetrically arranged on the frame 43. The frame 43 is fixed to the support plate 1 41. Each of the two corresponding positioning blocks 44 has a slot 45 on its opposite surface. The slot 45 matches the heat sink 31. Each positioning clamp 39 can correspond to the insertion and positioning of three heat sinks 31 in a heat sink group 30. The two heat sink groups 30 are respectively inserted into the two positioning clamps 39, and the heat sinks 31 are inserted and limited in the slots 45 of the two corresponding positioning blocks 44. Two heat sink groups 30 (six heat sinks 31) need to be installed on the side of the water pump body 17 on the same side. Each heat sink group 30 corresponds to a positioning clamp 39, so that the three heat sinks 31 in each heat sink group 30 are accurately engaged in the positioning blocks 44 of the positioning clamp 39. The design is ingenious and reasonable. The two positioning clamps 39 can achieve the initial accurate engagement and positioning of all heat sinks 31 on the same side, effectively improving work efficiency.

[0097] c. A limiting screw 46 is installed on each heat sink group 30. The limiting screw 46 matches the heat dissipation hole 35. Each heat sink 31 has two heat dissipation holes 35 distributed vertically. Two limiting screws 46 are installed on each heat sink group 30. The limiting screws 46 pass horizontally through the heat dissipation holes 35 through the three heat sinks 31 on the heat sink group 30. The position of the limiting screws 46 is adjusted so that both ends of the limiting screws 46 extend out of the corresponding heat sink group 30. Two limiting screws 46 are installed on each heat sink group 30. The limiting screws 46 pass through the corresponding heat dissipation holes 35 on the heat sinks 31 of the same heat sink group 30, connecting the heat sinks 31 of the same group in series.

[0098] d. A slide rail 47 is provided between the frame 43 and the second support plate 42. A sliding frame 48 is slidably engaged on the slide rail 47. A push cylinder 49 is provided on the second support plate 42. The push cylinder 49 is connected to the sliding frame 48. Two sets of guide rods 50 are provided on the sliding frame 48. Preferably, two guide rods 50 are provided in each set. Two sets of fixing clamps 40 are provided. A fixing clamp 40 is slidably provided on each set of guide rods 50. The fixing clamp 40 is connected to the lifting column 51. The lifting column 51 is fixed on the sliding frame 48. The fixing clamp 40 includes a base frame 52 and a limiting plate 53. The base frame 52 is slidably disposed on the guide rods 50. 3. Fixed to the base frame 52, six limiting plate sections 53 are provided, and the six limiting plate sections 53 are evenly divided into two groups arranged vertically (three limiting plate sections 53 form a group, corresponding to the three heat sinks 31 on the heat sink group 30). Each limiting plate section 53 includes two limiting plates 54 arranged horizontally. The gap 55 between the two limiting plates 54 matches the heat sink 31, so that the heat sink 31 is just locked between the two limiting plates 54 of the corresponding limiting plate section 53. The limiting plate 54 is provided with an open slot 56, which matches the limiting screw 46. The open slot 56 facilitates the subsequent locking and limiting between the limiting plate 54 and the limiting screw 46.

[0099] e. The lifting column 51 starts and drives the base frame 52 to move downward along the guide rod column 50. The base frame 52 drives the fixed limiting plate part 53 to move downward synchronously until the limiting plate 54 is engaged and limited on the corresponding limiting screw 46 through the opening slot 56. At the same time, the heat sink 31 is also limited and engaged in the gap 55 between the two limiting plates 54 of the corresponding limiting plate part 53. Then, the fastening nuts 73 are screwed into both ends of the limiting screw 46 and tightened. The lifting column 51 drives the fixing clamp 40 to move downward, so that the limiting plate 54 is engaged on the corresponding limiting screw 46. At the same time, the corresponding heat sink 31 is just limited and engaged in the gap 55 between the two limiting plates 54 of the corresponding limiting plate part 53. Then, the two ends of the limiting screw 46 are limited and fixed by the fastening nuts 73, so that the limiting screw 46 cannot be removed from the heat sink assembly 30, ensuring the installation firmness between the limiting screw 46 and the heat sink assembly 30.

[0100] f. The fixing clamp 40 is equipped with a locking component 74. By adjusting the locking component 74, the bottom opening of the opening slot 56 is limited and blocked by the locking component 74, so that the limiting screw 46 is limited and fixed in the opening slot 56. The locking component 74 limits and blocks the bottom of the opening slot 56, so that the limiting screw 46 is limited and fixed in the corresponding opening slot 56 and cannot move up and down. In conjunction with the fastening nut 73, the two ends of the limiting screw 46 are limited and fixed, and the heat sink 31, the limiting screw 46 and the limiting plate 53 are limited and fixed as a whole, which facilitates the subsequent movement operation of the heat sink 31 and ensures that the heat sink 31 will not move during movement.

[0101] The adjustment steps for locking assembly 74 are as follows:

[0102] ① The locking assembly 74 includes a locking bracket 58 and a locking rod 59. The locking rod 59 is fixedly connected to the locking bracket 58. The locking rod 59 corresponds one-to-one with the limiting plate 54. The number of locking rods 59 on the locking bracket 58 is the same as the number of limiting plates 54 set on the fixing fixture 40. Each locking rod 59 corresponds to one limiting plate 54. Thus, the opening end of the opening slot 56 on each limiting plate 54 can be limited and intercepted by the corresponding locking rod 59. The limiting plate 54 is provided with a horizontal slot 60 that is closed at one end. The horizontal slot 60 passes through the opening slot 56. The locking rod 59 is matched and inserted into the horizontal slot 60. The locking bracket 58 is provided with an adjusting handle 61, which is movably inserted into the base frame 52.

[0103] ② Move the adjusting handle 61. The adjusting handle 61 drives the locking rod 59 to move towards the corresponding opening slot 56 through the locking bracket 58 until the locking rod 59 moves to abut the closed end of the transverse slot 60. The locking rod 59 is laterally limited in the opening slot 56, and at the same time, the locking rod 59 is limited and supported on the bottom surface of the limiting screw 46; ③ At the same time, when the locking rod 59 abuts the closed end of the transverse slot 60, the bent section 62 of the adjusting handle 61 abuts and adheres to the base frame 52. The bent section 62 is provided with a second tightening screw 63. Tighten the second tightening screw 63 to limit and fix the adjusting handle 61 and the base frame 52.

[0104] The structure is cleverly and reasonably designed. By adjusting the handle 61, the locking rod 59 is pushed to move in the direction of the corresponding opening slot 56, so that the locking rod 59 is laterally intercepted at the bottom of the opening slot 56. At the same time, the locking rod 59 is also limited and supported on the bottom surface of the limiting screw 46, which restricts the limiting screw 46 from sliding out of the opening end of the opening slot 56, thereby improving the structural firmness and stability.

[0105] g. The push cylinder 49 is activated, pushing the sliding frame 48 to move along the slide rail 47. The sliding frame 48 drives the fixing clamp 40 to move towards the water pump body 17. The fixing clamp 40 simultaneously drives the heat sink 31 to move, causing the heat sink 31 to gradually move out of the positioning clamp 39 until the heat sink 31 abuts against the corresponding side of the water pump body 17. At this point, the push cylinder 49 stops moving. The push cylinder 49 pushes the sliding frame 48 to move, realizing the movement of the fixing clamp 40, thereby moving the heat sink 31 to abut against the side of the water pump body 17, realizing the precise positioning of the heat sink 31 on the water pump body 17. The push operation of the push cylinder 49 is automated, improving work efficiency and reducing manual labor intensity.

[0106] h. Welding operation: Welding operation is carried out at the connection between the heat sink 31 and the water pump body 17 using welding equipment; (3) Welding operation between the heat sink 31 and the water pump body 17 on the other side.

[0107] a. After the two sets of heat sinks 31 on one side of the water pump body 17 are welded, adjust the locking component 74 so that the locking component 74 moves out from the bottom opening of the opening slot 56, then unscrew the fastening nut 73 and remove the limiting screw 46 from the corresponding heat sink group 30; move the locking component 74 out from the opening slot 56 and then remove the fastening nut 73 to facilitate the removal of the limiting screw 46 from the heat sink group 30.

[0108] The adjustment steps of the locking assembly 74 are as follows: Loosen the second clamping screw 63, move the adjusting handle 61, and the adjusting handle 61 drives the locking rod 59 to move away from the opening slot 56 through the locking bracket 58 until the locking rod 59 is completely removed from the corresponding opening slot 56. The operation is convenient and simple. Loosen the second clamping screw 63 to release the adjusting handle 61 from the base frame 52, and then move the adjusting handle 61 to completely remove the locking rod 59 from the opening slot 56. This facilitates the subsequent removal of the limit screw 46, the disengagement and reset of the fixing clamp 40 from the heat sink 31, etc.

[0109] b. The push cylinder 49 is started. The push cylinder 49 drives the fixed clamp 40 to move away from the water pump body 17 through the sliding frame 48 and resets. Then the lifting column 51 is started to drive the fixed clamp 40 to move up and reset. The fixed clamp 40 is moved and reset by the push cylinder 49 and the lifting column 51, which facilitates the welding and positioning operation of the heat sink 31 on the other side.

[0110] c. Rotate the rotating frame 1 and rotate the clamp assembly 5 180° to the other side of the water pump body 17. When the water pump body 17 touches the side of the limiting frame 3, the rotating frame 1 rotates into place. Then, follow steps b to h in step (2) of step 2 above to perform welding operations on the other side heat sink 31. After the rotating frame 1 completes the limiting fixation each time it rotates, place the support pad 70 at the bottom rear side of the main support 2 for auxiliary support and reinforcement, which effectively improves the overall structural firmness and reliability.

[0111] The rotation steps of rotating frame 1 are as follows:

[0112] ① A rotating screw 64 is provided on the rotating frame 1. The rotating frame 1 is rotatably connected to the main support 2 through the rotating screw 64. A locking nut 65 is provided at the end of the rotating screw 64. At the same time, pressure plate components 66 are symmetrically arranged on both sides of the limiting frame 3. The pressure plate component 66 includes a pressure plate 67 and a clamping nut 68. A limiting post 69 is provided on the limiting frame 3. The pressure plate 67 is movably sleeved on the limiting post 69. The clamping nut 68 is located at the end of the limiting post 69. ② Adjust the pressure plate component 66 on the side closer to the rotating frame 1, loosen the clamping nut 68, and rotate the pressure plate 67 completely off the rotating frame 1.

[0113] ③ Loosen the locking nut 65 and rotate the rotating frame 1 180° around the rotating screw 64 as the rotating axis, thereby rotating the clamp assembly 5 to the other side of the water pump body 17. After the rotating frame 1 is rotated into place, it will abut against the side of the limit frame 3.

[0114] ④ Adjust the pressure plate 66 on the side of the rotating frame 1 that is close to the rotating frame 1, loosen the clamping nut 68, rotate the pressure plate 67 completely until it coincides with the rotating frame 1, and then tighten the clamping nut 68.

[0115] The pressure plate 66 clamps and limits the rotating frame 1, effectively ensuring the structural firmness and stability of the rotating frame 1 after it is rotated into place; the pressure plate 66 is set on both sides of the limiting frame 3, which can realize the clamping and limiting of the rotating frame 1 at two different work positions; the rotating frame 1 is supported and placed on the bottom surface of the main support platform 2, and the rotating frame 1 is rotatably connected to the main support platform 2, which facilitates the conversion of the work position of the clamping assembly 5, thereby clamping and positioning the heat sink 31 on both sides of the water pump body 17, which is convenient for welding operations.

[0116] d. After the heat sink 31 on the other side is welded, remove the water pump body 17 with the welded heat sink 31 from the auxiliary device;

[0117] The disassembly steps for the water pump body 17 are as follows:

[0118] ① Loosen the second tightening screw 63, move the adjusting handle 61, and the adjusting handle 61 drives the locking rod 59 to move away from the opening slot 56 through the locking bracket 58 until the locking rod 59 is completely removed from the corresponding opening slot 56;

[0119] ②Unscrew the fastening nut 73 and remove the limiting screw 46 from the corresponding heat sink assembly 30;

[0120] ③ The push cylinder 49 is started, and the push cylinder 49 drives the fixed clamp 40 to move away from the water pump body 17 through the sliding frame 48 to reset;

[0121] ④ The lifting column 51 starts and drives the fixing clamp 40 to move upward and reset;

[0122] The disassembly process of the entire water pump body 17 is reasonable and scientific, and the operation is convenient and simple. Finally, the fixing fixture 40 is reset, which facilitates the subsequent manufacturing and processing of the water pump body 17.

[0123] 3. Assembly of the reinforcing sleeve and the water pump body 17: Install the reinforcing sleeve onto the inlet pipe 18 and outlet pipe 19 of the water pump body 17; reinforce and protect the inlet pipe 18 with the first reinforcing sleeve 20, and reinforce and protect the outlet pipe 19 with the second reinforcing sleeve 21. At the same time, the inlet and outlet pipes 19 are reinforced and strengthened to improve the structural strength and structural stability, so that the impact resistance of the inlet and outlet pipes 19 is better, effectively preventing deformation and leakage at the inlet and outlet pipes 19, reducing subsequent maintenance costs, and extending service life.

[0124] The installation steps for the reinforcing sleeve are as follows:

[0125] (1) The reinforcing sleeve includes a first reinforcing sleeve 20 and a second reinforcing sleeve 21. The first reinforcing sleeve 20 is provided with a first connecting rod 22 and a positioning rod 24. The second reinforcing sleeve 21 is provided with a second connecting rod 23 and a through hole 25. The positioning rod 24 matches the through hole 25.

[0126] (2) The reinforcing sleeve 20 is fitted onto the outside of the water inlet pipe 18 of the water pump body 17. The connecting rod 22 is provided with a connecting hole 27. The position of the reinforcing sleeve 20 on the water inlet pipe 18 is adjusted so that the connecting hole 27 corresponds to the threaded hole 28 of the water pump body 17. Then, the connecting rod 22 and the water pump body 17 are fixed together by screws 29. The end of the screw 29 passes through the connecting hole 27 and extends into the threaded hole 28. The threaded hole 28 can facilitate the positioning and adjustment of the water pump body 17 on the auxiliary device, and can also facilitate the installation and fixing between the reinforcing sleeve 20 and the water pump body 17.

[0127] (3) Fit the reinforcing sleeve 21 onto the outside of the water outlet pipe 19 of the water pump body 17, adjust the reinforcing sleeve 21 so that the through hole 25 corresponds to the positioning rod 24, fit the connecting rod 23 onto the positioning rod 24 through the through hole 25, and then screw the connecting nut 26 into the end of the positioning rod 24 and tighten it.

[0128] The inlet pipe 18 is reinforced and protected by the first reinforcement sleeve 20, and the outlet pipe 19 is reinforced and protected by the second reinforcement sleeve 21. At the same time, the inlet and outlet pipes 19 are strengthened and reinforced to improve the structural strength and stability, making the impact resistance of the inlet and outlet pipes 19 better, effectively preventing deformation and leakage at the inlet and outlet pipes 19, reducing subsequent maintenance costs, and extending service life. The first reinforcement sleeve 20 and the second reinforcement sleeve 21 are connected and fixed, and the two are interconnected and restrained. At the same time, the first reinforcement sleeve 20 is fixed to the water pump body 17, effectively ensuring the installation firmness of the first reinforcement sleeve 20 and the second reinforcement sleeve 21, and ensuring the reinforcement and strengthening effect of the first reinforcement sleeve 20 on the inlet pipe 18 and the second reinforcement sleeve 21 on the outlet pipe 19.

[0129] 4. Assembly of U-shaped mounting bracket 32 ​​and water pump body 17: Install U-shaped mounting bracket 32 ​​onto water pump body 17. U-shaped mounting bracket 32 ​​and water pump body 17 are detachable. U-shaped mounting bracket 32 ​​enables stable installation between water pump and mounting surface, ensuring the structural strength and firmness of water pump after installation.

[0130] The installation steps for the U-shaped mounting bracket 32 ​​are as follows:

[0131] (1) A limiting groove 33 is formed between two sets of heat sink groups 30 located on the same side of the water pump body 17, and the U-shaped mounting bracket 32 ​​is snapped onto the water pump body 17. The two ends of the U-shaped mounting bracket 32 ​​are snapped into the limiting groove 33.

[0132] (2) Next, the U-shaped bracket is connected to the heat sink 31 that is in direct contact. Both sides of the U-shaped mounting bracket 32 ​​are provided with protrusions 34. The protrusions 34 are provided with fixing holes 36. The fixing holes 36 correspond to the heat dissipation holes 35 on the corresponding heat sink 31. Then, the heat sink 31 that is in contact with the U-shaped mounting bracket 32 ​​is fixed to the U-shaped mounting bracket 32 ​​by bolts 37. The tail of the bolts 37 passes through the protrusions 34, the heat sink 31 and the mounting nut 38 in sequence.

[0133] The two sets of heat sinks 30 on the same side form a limiting groove 33, which enables precise snap-fit ​​positioning between the U-shaped mounting bracket 32 ​​and the water pump body 17, ensuring the stability of the snap-fit. At the same time, it fixes the U-shaped mounting bracket 32 ​​to the heat sink 31 in contact, ensuring the installation is firm and reliable. The ingenious structural design makes it easier to assemble. The protrusion 34 and the U-shaped mounting bracket 32 ​​are integrally formed to ensure the overall structural strength and facilitate actual processing and forming. When the U-shaped mounting bracket 32 ​​is actually installed, both sides are precisely limited within the limiting groove 33 formed between the two adjacent heat sink sets 30, so that both sides of the U-shaped mounting bracket 32 ​​are limited between the two heat sink sets 30, and are secured with bolts 37. The heat sink 31 is fixed to the U-shaped mounting bracket 32. Each protrusion 34 has a fixing hole 36 corresponding to a heat dissipation hole 35. Bolts 37, in conjunction with limit nuts 16, connect and fix the protrusion 34 to the corresponding heat sink 31, effectively ensuring installation stability. This allows the U-shaped mounting bracket 32 ​​to be assembled and fixed to the water pump body 17 as a whole. Since one side of the U-shaped mounting bracket 32 ​​needs to be fixed to two contacting heat sinks 31 simultaneously, two sets of protrusions 34 are provided on one side of the U-shaped mounting bracket 32, each corresponding to one heat sink 31. A gap 55 is formed between the two sets of protrusions 34, providing operating space for the bolts 37 and facilitating the assembly and disassembly of the U-shaped mounting bracket 32. The U-shaped mounting bracket 32 ​​is also equipped with lifting lugs for easy lifting of the water pump.

[0134] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effect are all covered within the protection scope of the present invention.

Claims

1. A method for manufacturing a DC brushless water pump, characterized in that: Includes the following steps: Step 1, Component Machining: (1) Fabricate the corresponding water pump body, reinforcing sleeve and U-shaped mounting bracket according to the design drawings; (2) Process the heat sink according to the design dimensions, and punch holes on the surface of the heat sink to form heat dissipation holes according to the design requirements; Step 2: Welding and installing the heat sink and water pump body: (1) Positioning and fixing of the water pump body: a. An auxiliary device is used to assist in the welding operation of the water pump body and the heat sink. The auxiliary device includes a rotating frame, a main support platform and a limiting frame. The main support platform is set on the rotating frame, the limiting frame is set on one side of the main support platform, and an auxiliary support platform is set in the center of the limiting frame. The auxiliary support platform is fixedly connected to the main support platform. A clamping assembly is provided on the rotating frame. b. Place the water pump body on the main support and auxiliary support, with the rear end face of the water pump body abutting against the side plate on the main support. Adjust the positioning post at the top of the side plate, loosen the first clamping screw, and move the positioning post down. At the same time, adjust the position of the water pump body on the main support until the positioning post corresponds to the threaded hole on the water pump body. Rotate the positioning post downward so that the bottom end of the positioning post is screwed into the threaded hole, and then tighten the first clamping screw. c. Adjust the top clamping component on the side plate. The top clamping component includes a connecting screw and a top clamping plate. The connecting screw is fixed to the top of the side plate by two clamping nuts. Loosen the clamping nuts and move the connecting screw downward. The connecting screw will drive the top clamping plate to move downward until the top clamping plate abuts and presses against the top surface of the water pump body. Then tighten the clamping nuts. d. Adjust the side clamping parts on the limit frame. There are two sets of side clamping parts, which are respectively located on both sides of the auxiliary support. The side clamping parts include a side clamping plate, an adjusting screw, and a limit nut. The side clamping plate is slidably sleeved on the adjusting screw and simultaneously slidably engaged with the limit frame. The side clamping plate is limited and fixed on the adjusting screw by the two limit nuts on the left and right. Loosen the limit nuts and move the side clamping plate towards the water pump body until the side clamping plate is pressed against the corresponding side of the water pump body. Then tighten the limit nuts. (2) Welding of one side of the heat sink to the water pump body: a. Four sets of heat sinks are installed on the water pump body. The four sets of heat sinks are distributed in pairs and symmetrically arranged on both sides of the water pump body. Each set of heat sinks includes three heat sinks. First, the heat sinks on one side of the water pump body are welded and assembled. b. Take six heat sinks, divide them into two groups of three. The fixture assembly includes a positioning fixture and a fixing fixture. The rotating frame is equipped with a support plate one and a support plate two. The positioning fixture is fixed on the support plate one. There are two sets of positioning fixtures, which correspond to the two heat sink groups. The positioning fixture includes a frame and positioning blocks. There are six positioning blocks. The six positioning blocks are evenly divided into two groups and symmetrically arranged on the frame. The frame is fixed to the support plate one. Slots are provided on the opposite surfaces of the two corresponding positioning blocks. The slots match the heat sinks. Insert the two heat sink groups into the two sets of positioning fixtures respectively. The heat sinks are inserted and limited in the slots of the two corresponding positioning blocks. c. Install a limiting screw on each heat sink group. The limiting screw matches the heat dissipation hole. Each heat sink has two heat dissipation holes distributed vertically. Install two limiting screws on each heat sink group. The limiting screws pass horizontally through the heat dissipation holes through the three heat sinks on the heat sink group. Adjust the position of the limiting screws so that both ends of the limiting screws extend out of the corresponding heat sink group. d. A slide rail is provided between the frame and the second support plate. A sliding frame is slidably engaged on the slide rail. A push cylinder is provided on the second support plate. The push cylinder is connected to the sliding frame. Two sets of guide rods are provided on the sliding frame. Two sets of fixing clamps are provided. A set of fixing clamps is slidably provided on each set of guide rods. The fixing clamps are connected to the lifting column. The lifting column is fixed on the sliding frame. The fixing clamps include a base frame and a limiting plate. The base frame is slidably provided on the guide rods. The limiting plate is fixed to the base frame. There are six limiting plates. The six limiting plates are evenly divided into two groups and arranged vertically. Each limiting plate includes two limiting plates arranged horizontally. The gap between the two limiting plates matches the heat sink. An open slot is provided on the limiting plate. The open slot matches the limiting screw. e. The lifting column starts and drives the base frame to move down along the guide rod column. The base frame drives the fixed limit plate to move down synchronously until the limit plate is locked onto the corresponding limit screw through the open slot. At the same time, the heat sink is locked between the two limit plates of the corresponding limit plate. Then, tighten the fastening nuts at both ends of the limit screw. f. The fixing fixture is equipped with a locking component. By adjusting the locking component, the bottom opening of the opening slot is limited and blocked by the locking component, so that the limiting screw is limited and fixed in the opening slot. g. The push cylinder is started. The push cylinder pushes the sliding frame to move along the slide rail. The sliding frame drives the fixed clamp to move towards the water pump body. The fixed clamp drives the heat sink to move at the same time, so that the heat sink gradually moves out of the positioning clamp until the heat sink touches and attaches to the corresponding side of the water pump body. Then the push cylinder stops moving. h. Welding operation: Welding operation is carried out at the connection between the heat sink and the water pump body using a welding device; (3) Welding of the heat sink on the other side to the water pump body; a. After the two sets of heat sinks on one side of the water pump body are welded, adjust the locking component so that the locking component moves out from the bottom opening of the slot, then unscrew the fastening nut and remove the limit screw from the corresponding heat sink set. b. The jacking cylinder is started. The jacking cylinder drives the fixed clamp to move away from the water pump body and reset through the sliding frame. Then the lifting column is started to drive the fixed clamp to move up and reset. c. Rotate the rotating frame to rotate the entire clamp assembly 180° to the other side of the water pump body, and then perform the welding operation of the heat sink on the other side according to step b to step h in step (2) of step 2 above. d. After the heat sink on the other side is welded, remove the water pump body with the welded heat sink from the auxiliary device; Step 3, Assembly of the reinforcing sleeve and the water pump body: Install the reinforcing sleeve onto the inlet and outlet pipes of the water pump body; Step 4: Assembly of the U-shaped mounting bracket and the water pump body: Install the U-shaped mounting bracket onto the water pump body.

2. The method for manufacturing a DC brushless water pump according to claim 1, characterized in that: In step 3 above, the installation steps for the reinforcing sleeve are as follows: (1) The reinforcing sleeve includes a first reinforcing sleeve and a second reinforcing sleeve. The first reinforcing sleeve is provided with a first connecting rod and a positioning rod. The second reinforcing sleeve is provided with a second connecting rod and a through hole. The positioning rod matches the through hole. (2) Place the reinforcing sleeve on the outside of the water inlet pipe of the water pump body. The connecting rod has a connecting hole. Adjust the position of the reinforcing sleeve on the water inlet pipe so that the connecting hole corresponds to the threaded hole of the water pump body. Then fix the connecting rod to the water pump body with screws. The end of the screw passes through the connecting hole and extends into the threaded hole. (3) Place the reinforcing sleeve 2 on the outside of the water outlet pipe of the water pump body, adjust the reinforcing sleeve 2 so that the perforation corresponds to the positioning rod, and place the connecting rod 2 on the positioning rod through the perforation. Then screw the connecting nut into the end of the positioning rod and tighten it.

3. The method for manufacturing a DC brushless water pump according to claim 2, characterized in that: In step 4 above, the installation steps for the U-shaped mounting bracket are as follows: (1) A limiting groove is formed between the two sets of heat sinks located on the same side of the water pump body, and the U-shaped mounting bracket is snapped onto the water pump body. The two ends of the U-shaped mounting bracket are snapped into the limiting groove. (2) Next, connect the U-shaped mounting bracket to the heat sink that is in direct contact. Both sides of the U-shaped mounting bracket are provided with protrusions and fixing holes. The fixing holes correspond to the heat dissipation holes on the corresponding heat sink. Then, fix the heat sink that is in contact with the U-shaped mounting bracket to the U-shaped mounting bracket with bolts. The tail of the bolt passes through the protrusion, the heat sink and the mounting nut in sequence.

4. The method for manufacturing a DC brushless water pump according to claim 1, characterized in that: In step (2) of step 1 above, during the heat sink punching operation, at least two heat sinks are stacked at a time, and then the stacked heat sinks are punched simultaneously by the punching equipment.

5. The method for manufacturing a DC brushless water pump according to claim 1, characterized in that: In step f of step (2) of step 2 above, the adjustment steps of the locking component are as follows: The locking assembly includes a locking bracket and a locking rod. The locking rod is fixedly connected to the locking bracket and corresponds one-to-one with the limiting plate. The limiting plate is provided with a horizontal slot that is closed at one end and passes through the open slot. The locking rod is matched and inserted into the horizontal slot. The locking bracket is provided with an adjusting handle that is movably inserted into the base frame. Move the adjusting lever, and the adjusting lever will drive the locking lever to move towards the corresponding open slot through the locking bracket until the locking lever moves to abut the closed end of the transverse slot. The locking lever is then transversely limited in the open slot, and at the same time, the locking lever is limited and supported on the bottom surface of the limiting screw. At the same time, when the locking rod touches the closed end of the transverse slot, the bent section of the adjusting handle touches and adheres to the base frame. The bent section is equipped with a second clamping screw. Tightening the second clamping screw limits and fixes the adjusting handle to the base frame.

6. The method for manufacturing a DC brushless water pump according to claim 5, characterized in that: In step a of step (3) of step 2 above, the adjustment steps of the locking assembly are as follows: loosen the second tightening screw, move the adjusting handle, and the adjusting handle drives the locking rod to move away from the opening slot through the locking bracket until the locking rod is completely removed from the corresponding opening slot.

7. The method for manufacturing a DC brushless water pump according to claim 5, characterized in that: In step d of step (3) of step 2 above, the disassembly steps of the water pump body are as follows: Loosen the second locking screw, move the adjusting handle, and the adjusting handle will drive the locking rod to move away from the opening slot through the locking bracket until the locking rod is completely removed from the corresponding opening slot; Unscrew the fastening nut and remove the limit screw from the corresponding heat sink assembly; The push cylinder is activated, and the push cylinder drives the fixed clamp to move away from the water pump body and reset through the sliding frame; The lifting column starts, causing the fixing clamp to move upward and reset.

8. The method for manufacturing a DC brushless water pump according to claim 1, characterized in that: In step c of step (3) of step 2 above, the rotation steps of the rotating frame are as follows: The rotating frame is equipped with a rotating screw, which is rotatably connected to the main support platform. A locking nut is provided at the end of the rotating screw. At the same time, pressure plate components are symmetrically arranged on both sides of the limiting frame. Each pressure plate component includes a pressure plate and a locking nut. A limiting post is provided on the limiting frame. The pressure plate is movably sleeved on the limiting post, and the locking nut is located at the end of the limiting post. Adjust the pressure plate on the side closest to the rotating frame, loosen the clamping nut, and rotate the pressure plate completely off the rotating frame; Loosen the locking nut and rotate the rotating frame 180° around the rotating screw as the rotation axis, thereby rotating the entire clamp assembly to the other side of the water pump body. After the rotating frame is rotated into place, it will abut against the side of the limit frame. Adjust the pressure plate on the side closest to the rotating frame after it has rotated, loosen the clamping nut, rotate the pressure plate completely until it coincides with the rotating frame, and then tighten the clamping nut.

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