Manufacturing process of rotor for rotor type phase change liquid cooling pump

Abstract

The application discloses a manufacturing process of a rotor for a rotor type phase change liquid cooling pump, which comprises the following steps: S1, rotor body processing and forming, S2, driving rotor fixed assembly, S3, driving rotor engineering plastic layer injection molding, S4, driven rotor fixed assembly and S5, driven rotor engineering plastic layer injection molding. The application can not only improve the injection molding quality of the engineering plastic layer on the outer surface of the rotor body, but also can realize that one injection molding die can meet the injection molding processing of the engineering plastic layers of the same pair of driving rotor and driven rotor, greatly improves the practicability and reduces the manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of liquid pump technology, and in particular to a manufacturing process for a rotor used in a rotor-type phase change liquid cooling pump. Background Technology

[0002] A pump is a mechanical device that transports or pressurizes fluids. It transfers mechanical energy from a prime mover or other external energy to the liquid, increasing the liquid's energy. Pumps are mainly used to transport liquids such as water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids.

[0003] In the field of refrigerant delivery, positive displacement pumps, rotary pumps or centrifugal pumps are traditionally used for refrigerant delivery. When the rotor is running continuously, wear will not only cause metal powder to fall off and burn out the motor, but conventional pumps also require the presence of lubricating oil or lubricant to reduce pump wear.

[0004] The rotor is a crucial component of a rotary phase change liquid-cooled pump. To reduce metal wear on the rotor surface and lower pump noise during operation, an engineering plastic layer is wrapped around the rotor's outer surface to reduce friction and noise. However, due to the structural differences between the driving and driven rotors, a single injection mold cannot mold the engineering plastic layers for both rotors. Therefore, at least two injection molds are required. This not only increases manufacturing costs but also easily leads to inconsistent machining precision of the engineering plastic layers on the driving and driven rotors, affecting transmission efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a technical solution for manufacturing rotors for rotor-type phase change liquid-cooled pumps, which addresses the shortcomings of existing technologies. This solution not only improves the injection molding quality of the engineering plastic layer on the outer surface of the rotor body, but also enables the same injection mold to meet the injection molding requirements of the engineering plastic layers of the same pair of active and driven rotors, greatly improving practicality and reducing manufacturing costs.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A manufacturing process for a rotor used in a rotor-type phase change liquid cooling pump, characterized by comprising the following steps:

[0008] S1. Rotor body machining and forming

[0009] First, according to the design requirements, the rotor body of the active rotor and the rotor body of the driven rotor are integrally machined. The rotor body of the active rotor has a first threaded section and a plug rod integrally machined. The first threaded section and the plug rod are located at both ends of the rotor body and are on the same axis. The rotor body of the driven rotor has a second threaded section and a shaft integrally machined. The second threaded section and the shaft are located at both ends of the rotor body and are on the same axis.

[0010] S2, Active rotor fixed assembly

[0011] a. First, assemble the second connecting end with the positioning mechanism to one end of the cylinder with fasteners, and install a sealing ring between the second connecting end and the cylinder. At the same time, rotate the second rotating cap so that the second rotating cap is close to the second end cover. The second rotating cap is provided with a second internal thread hole, and the second end cover is provided with a second plum blossom groove on the side away from the second rotating cap.

[0012] b. Then, place the processed rotor body into the injection groove of the cylinder, so that the side with the first threaded section passes through the second end cover until the step on the first threaded section is limited to the second countersunk platform of the second end cover. Rotate the second rotating cap to fix the rotor body through the second rotating cap.

[0013] c. Next, the first connecting end with the positioning mechanism is assembled to the other end of the cylinder with fasteners, and a sealing ring is installed between the first connecting end and the cylinder. The insert rod on the rotor body passes through the first through hole on the first end cover and the through hole on the first rotating cap. The step on the rotor body near the insert rod end is limited to the first sink plate of the first end cover, so that an injection space is formed between the first end cover, the second end cover and the rotor body of the active rotor.

[0014] S3, Active rotor engineering plastic layer injection molding

[0015] a. Molten elastomer material is introduced into the injection space through the injection tube on the first end cap, so that the outer surface of the rotor body of the active rotor is covered with a layer of engineering plastic.

[0016] b. After the engineering plastic layer reaches the set strength, first fix the insert rod, then loosen the second rotating cap until the second rotating cap is disengaged from the second threaded section, and remove the entire second connecting end. Then remove the first connecting end, and finally take the active rotor with the injection-molded engineering plastic layer out of the injection molding tank.

[0017] S4, Driven rotor fixed assembly

[0018] a. First, assemble the first connecting end with the positioning mechanism onto one side of the cylinder with fasteners, and install a sealing ring between the first connecting end and the cylinder. At the same time, rotate the first rotating cap so that the first rotating cap is close to the first end cap. The first rotating cap is provided with a first internal threaded hole, and the first end cap is provided with a first plum blossom groove on the side away from the first rotating cap.

[0019] b. Then, place the processed driven rotor body into the injection groove of the cylinder, so that the side with the second thread section passes through the first end cover until the step on the second thread section is limited to the first countersunk platform of the first end cover. Rotate the first rotating cap to fix the rotor body through the first rotating cap.

[0020] c. Next, the second connecting end with the positioning mechanism is assembled to the other end of the cylinder with fasteners, and a sealing ring is installed between the second connecting end and the cylinder. The shaft on the rotor body passes through the second through hole on the second end cover. The step on the rotor body near the shaft end is limited to the second sink plate of the second end cover, so that an injection space is formed between the first end cover, the second end cover and the rotor body of the driven rotor.

[0021] S5, Driven rotor engineering plastic layer injection molding

[0022] a. Molten elastomer material is introduced into the injection space through the injection tube on the first end cap, so that the outer surface of the rotor body of the driven rotor is covered with a layer of engineering plastic.

[0023] b. After the engineering plastic layer reaches the set strength, first remove the second connecting end, then fix the shaft, loosen the first rotating cap until the first rotating cap is disengaged from the second threaded section, and remove the entire first connecting end. Finally, remove the driven rotor with the injection-molded engineering plastic layer from the injection molding tank.

[0024] By designing the above process steps, not only can the injection molding quality of the engineering plastic layer on the outer surface of the rotor body be improved, but also the same injection mold can meet the injection molding processing of the engineering plastic layer of the same pair of active and driven rotors, which greatly improves practicality and reduces manufacturing costs.

[0025] Furthermore, when the active rotor engineering plastic layer and the driven rotor engineering plastic layer in steps S2 to S5 are injection molded with a double-layer structure, the following steps are included:

[0026] a. First, install the first plum blossom gasket and the second plum blossom gasket in the first plum blossom groove and the second plum blossom groove respectively, so that the first plum blossom gasket forms a first gap with the inner wall of the first plum blossom groove, and the second plum blossom gasket forms a second gap with the inner wall of the second plum blossom groove.

[0027] b. Then, the first connecting end or the second connecting end is assembled onto the cylinder, and the outer injection molding mechanism is inserted into the injection groove of the cylinder, so that one side of the outer injection molding mechanism is limited to the first gap or the second gap. Then, the side of the active rotor or the driven rotor with the threaded section is limited by the second connecting end or the first connecting end, so that the other side of the outer injection molding mechanism is limited to the second gap or the first gap. The first plum blossom gasket, the second plum blossom gasket, the outer injection molding mechanism and the rotor body form a first injection space.

[0028] c. Then, molten elastomer material is introduced into the first injection space through the injection tube on the first end cap to form the first layer of engineering plastic.

[0029] d. After the first engineering plastic layer reaches the set strength, remove the second connecting end and the second plum blossom gasket, then remove the first connecting end and the first plum blossom gasket. Install the first connecting end or the second connecting end after removing the first plum blossom gasket or the second plum blossom gasket onto the cylinder. Then remove the outer injection molding mechanism and install the second connecting end or the first connecting end onto the cylinder. A second injection space is formed between the first plum blossom groove, the second plum blossom groove, the injection groove and the first engineering plastic layer.

[0030] e. Finally, the molten elastomer material is introduced into the second injection space through the injection tube on the first end cap to form the second layer of engineering plastic.

[0031] f. After the second engineering plastic layer reaches the set strength, first remove the second connecting end, then remove the first connecting end, and finally take out the active rotor or driven rotor with the injection-molded engineering plastic layer.

[0032] The above design steps not only meet the injection molding requirements when the engineering plastic layer adopts an inner and outer two-layer injection molding structure, but also improve the performance of the active rotor and the driven rotor, reduce friction and wear, reduce noise, and extend service life.

[0033] Furthermore, the thickness of the first plum blossom gasket is less than the depth of the first plum blossom groove, and the thickness of the second plum blossom gasket is less than the depth of the second plum blossom groove, which facilitates the processing and molding of the first engineering plastic layer and the second engineering plastic layer.

[0034] Furthermore, the outer injection molding mechanism is formed by splicing several injection molding units end to end. Each injection molding unit includes an integrally molded arc segment and a connecting segment. The connecting segment is located on both sides of the arc segment, and the connecting segment and the arc segment have the same inclination direction, which improves the injection molding quality.

[0035] Furthermore, the first plum blossom gasket is provided with an injection hole, which is connected to the injection tube to facilitate the injection molding of the first engineering plastic layer.

[0036] Furthermore, the positioning mechanism includes a positioning ring and a fixing post. The positioning ring is connected to the first end cap and the second end cap through the fixing post. The fixing post improves the stability and reliability of the positioning ring installation. The positioning ring is provided with an internal thread, and the outer sides of the first rotating cap and the second rotating cap are provided with external threads, so as to realize the threaded connection between the first rotating cap, the second rotating cap and the positioning ring.

[0037] Furthermore, both ends of the cylinder are provided with a first sealing groove, and the first end cap and the second end cap are respectively provided with a second sealing groove and a third sealing groove. A sealing ring is installed between the first sealing groove and the second sealing groove and the third sealing groove. Through the design of the first sealing groove, the second sealing groove and the third sealing groove, the sealing effect between the cylinder and the first end cap and the second end cap can be improved, and the leakage of injection molding material can be reduced.

[0038] Furthermore, the injection groove has a plum blossom-shaped structure and is inclined in a clockwise or counterclockwise direction, which can meet the injection requirements of the external teeth on the active rotor and the driven rotor in different directions, and improve the flexibility during injection.

[0039] Furthermore, a first ear plate is evenly provided on the outer circumferential side of the first end cap, a second ear plate is evenly provided on the outer circumferential side of the second end cap, and a limiting ear plate is evenly provided on the outer circumferential side of both ends of the cylinder. The limiting ear plate is provided with a limiting groove that matches both the first ear plate and the second ear plate. By fasteners passing through the first ear plate and the limiting ear plate, and the second ear plate and the limiting ear plate, a fixed connection is achieved between the first end cap, the second end cap, and the cylinder.

[0040] Furthermore, the first ear plate and the second ear plate protrude from the end faces of the first end cover and the second end cover, respectively. By inserting the first ear plate and the second ear plate into the limiting grooves of the corresponding limiting ear plates, the first end cover and the second end cover can be quickly positioned, thereby improving assembly accuracy.

[0041] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0042] 1. The process steps of the present invention can not only improve the injection molding quality of the engineering plastic layer on the outer surface of the rotor body, but also enable the same injection mold to meet the injection molding processing of the engineering plastic layer of the same pair of active rotors and driven rotors, which greatly improves practicality and reduces manufacturing costs.

[0043] 2. This invention can not only meet the injection molding requirements when the engineering plastic layer adopts an inner and outer two-layer injection molding structure, but also improve the performance of the active rotor and the driven rotor, reduce friction and wear, reduce noise, and extend service life.

[0044] 3. The injection groove has a plum blossom-shaped structure and is inclined in a clockwise or counterclockwise direction, which can meet the injection requirements of the external teeth on the active rotor and the driven rotor in different directions, and improve the flexibility during injection. Attached image description:

[0045] The present invention will be further described below with reference to the accompanying drawings:

[0046] Figure 1 This is a flowchart illustrating the manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to the present invention.

[0047] Figure 2 This is a rendering of the rotor injection mold used in this invention;

[0048] Figure 3 for Figure 2 Schematic diagram of the structure in direction A;

[0049] Figure 4 This is a schematic diagram of the structure of the cylinder in this invention;

[0050] Figure 5 This is a schematic diagram showing the connection between the first connecting end and the positioning mechanism in this invention;

[0051] Figure 6 for Figure 5 Schematic diagram of the structure in the B direction;

[0052] Figure 7 This is a schematic diagram showing the connection between the second connecting end and the positioning mechanism in this invention;

[0053] Figure 8 for Figure 7 Schematic diagram of the structure in the C-direction;

[0054] Figure 9 This is a schematic diagram of the structure of the first plum blossom gasket in this invention;

[0055] Figure 10 This is a schematic diagram of the structure of the second plum blossom gasket in this invention;

[0056] Figure 11 This is a schematic diagram of the outer injection molding mechanism in this invention;

[0057] Figure 12 This is a schematic diagram of the structure of the injection molding monomer in this invention;

[0058] Figure 13 This is a schematic diagram of the rotor pair in this invention.

[0059] In the diagram: 1-Cylinder; 2-First connecting end; 3-Second connecting end; 4-Positioning mechanism; 5-Injection groove; 6-Limiting ear plate; 7-Limiting groove; 8-First sealing groove; 9-First ear plate; 10-Injection tube; 11-First connector; 12-First rotating cap; 13-Through hole; 14-Positioning ring; 15-Fixing post; 16-First end cap; 17-Second sealing groove; 18-First through hole; 19-First plum blossom groove; 20-First plum blossom gasket; 21-First gap; 22-Second end cap; 23-Second connector; 24-Second... 25-Rotating cap; 26-Second ear plate; 27-Third sealing groove; 28-Second through hole; 29-Second plum blossom groove; 30-Second plum blossom gasket; 31-Second gap; 32-Injection hole; 33-First mounting block; 34-First recessed platform; 35-Second mounting block; 36-Second recessed platform; 37-Outer injection molding mechanism; 38-Arc segment; 39-Connecting segment; 40-Driven rotor; 41-Engineering plastic layer; 42-First threaded segment; 43-Second threaded segment; 44-Insertion rod; 45-Rotor body; 46-Shaft. Detailed Implementation

[0060] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0061] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0062] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0063] like Figure 13As shown, the rotor pair structure after injection molding of the present invention includes a pair of meshing and rotating active rotors 39 and driven rotors 40. Engineering plastic layers 41 are injection molded on the outer surfaces of both active rotors 39 and driven rotors 40. The engineering plastic layers 41 may include a single layer or two inner and outer layers, and both are made of elastomer materials. The elastomer materials can be rubber, polyetheretherketone (PEEK), etc., preferably PEEK. This material is non-conductive, has good affinity, and will not cause damage to the motor even if it wears down. At the same time, it can run dry. In the cooling system, the refrigerant is easy to evaporate, and the evaporation produces gas. The gas will be present during dry operation, which can meet the requirements of dry operation.

[0064] like Figures 1 to 12 The diagram illustrates a manufacturing process for a rotor used in a rotor-type phase change liquid-cooled pump according to the present invention, comprising the following steps:

[0065] S1, Rotor body is machined and formed at 45 degrees.

[0066] First, the rotor body 45 of the active rotor 39 and the rotor body 45 of the driven rotor 40 are integrally machined according to the design requirements. The rotor body 45 of the active rotor 39 has a first threaded section 42 and a plug rod 44 integrally machined on it. The first threaded section 42 and the plug rod 44 are located at both ends of the rotor body 45 and are on the same axis. The rotor body 45 of the driven rotor 40 has a second threaded section 43 and a shaft 46 integrally machined on it. The second threaded section 43 and the shaft 46 are located at both ends of the rotor body 45 and are on the same axis. Grooves can be provided on the outer surface of the rotor body 45 to improve the connection strength between the engineering plastic layer and the rotor body.

[0067] S2, fixed assembly of the active rotor 39

[0068] a. First, the second connecting end 3 with positioning mechanism 4 is assembled to one end of the cylinder 1 with fasteners, and a sealing ring is installed between the second connecting end 3 and the cylinder 1. At the same time, the second rotating cap 24 is rotated so that the second rotating cap 24 is close to the second end cover 22. The second rotating cap 24 is provided with a second internal thread hole, and the second end cover 22 is provided with a second plum blossom groove 28 on the side away from the second rotating cap 24.

[0069] The positioning mechanism 4 includes a positioning ring 14 and a fixing post 15. The positioning ring 14 is connected to the first end cap 16 and the second end cap 22 through the fixing post 15. The fixing post 15 improves the stability and reliability of the positioning ring 14 installation. The positioning ring 14 is provided with an internal thread, and the outer sides of the first rotating cap 12 and the second rotating cap 24 are provided with external threads to realize the threaded connection between the first rotating cap 12 and the second rotating cap 24 and the positioning ring 14.

[0070] Both ends of the cylinder 1 are provided with a first sealing groove 8. The first end cap 16 and the second end cap 22 are respectively provided with a second sealing groove 17 and a third sealing groove 26. A sealing ring is installed between the first sealing groove 8 and the second sealing groove 17 and the third sealing groove 26. Through the design of the first sealing groove 8, the second sealing groove 17 and the third sealing groove 26, the sealing effect between the cylinder 1 and the first end cap 16 and the second end cap 22 can be improved, and the leakage of injection molding material can be reduced.

[0071] b. Then, the rotor body 45 of the processed active rotor 39 is placed into the injection groove 5 of the cylinder 1, so that the side with the first threaded section 42 passes through the second end cover 22 until the step on the first threaded section 42 is limited to the second recess 35 of the second end cover 22. The second rotating cap 24 is rotated to fix the rotor body 45. In order to increase the distance between the rotor body 45 and the inner wall of the injection groove 5, a positioning block can be installed on the outside of the step of the rotor body 45, and a positioning groove can be opened on the second recess 35. The positioning block and the positioning groove are used to achieve the positioning of the rotor body 45.

[0072] The injection groove 5 has a plum blossom-shaped structure and is inclined in either a clockwise or counterclockwise direction. This allows it to meet the injection molding requirements of the external teeth on the active rotor 39 and the driven rotor 40 in different directions, improving the flexibility during injection molding. In this application, the injection groove 5 is set in a clockwise direction as an example for injection molding the engineering plastic layer 41 on the outer layer of the rotor.

[0073] c. Next, the first connecting end 2 with the positioning mechanism 4 is assembled to the other end of the cylinder 1 with fasteners, and a sealing ring is installed between the first connecting end 2 and the cylinder 1. The insert rod 44 on the rotor body 45 passes through the first through hole 18 on the first end cover 16 and the through hole 13 on the first rotating cap 12. The step on the rotor body 45 near the insert rod 44 is limited to the first recess 33 on the first end cover 16, so that an injection molding space is formed between the first end cover 16, the second end cover 22 and the rotor body 45 of the active rotor 39.

[0074] First ear plates 9 are evenly distributed on the outer circumferential side of the first end cap 16, and second ear plates 25 are evenly distributed on the outer circumferential side of the second end cap 22. Limiting ear plates 6 are evenly distributed on the outer circumferential side of both ends of the cylinder 1. Each limiting ear plate 6 has a limiting groove 7 that matches both the first ear plate 9 and the second ear plate 25. Fasteners passing through the first ear plate 9 and the limiting ear plate 6, and the second ear plate 25 and the limiting ear plate 6, achieve a fixed connection between the first end cap 16, the second end cap 22, and the cylinder 1. The first ear plate 9 and the second ear plate 25 protrude from the end faces of the first end cap 16 and the second end cap 22, respectively. By inserting the first ear plate 9 and the second ear plate 25 into the limiting grooves 7 of the corresponding limiting ear plates 6, rapid positioning of the first end cap 16 and the second end cap 22 can be achieved, improving assembly accuracy.

[0075] S3, Active rotor, 39 engineering plastic layers, 41 injection molding

[0076] a. Molten elastomer material is introduced into the injection space through the injection tube 10 on the first end cap 16, so that the outer surface of the rotor body 45 of the active rotor 39 is covered with an engineering plastic layer 41.

[0077] b. After the engineering plastic layer 41 reaches the set strength, first fix the insert rod 44, then loosen the second rotating cap 24 until the second rotating cap 24 is disengaged from the second threaded section 43, and remove the entire second connecting end 3, then remove the first connecting end 2, and finally take out the active rotor 39 with the injection-molded engineering plastic layer 41 from the injection molding tank 5.

[0078] S4, Driven rotor 40 fixed assembly

[0079] a. First, the first connecting end 2 with positioning mechanism 4 is assembled to one side of cylinder 1 with fasteners, and a sealing ring is installed between the first connecting end 2 and cylinder 1. At the same time, the first rotating cap 12 is rotated so that the first rotating cap 12 is close to the first end cover 16. The first rotating cap 12 is provided with a first internal thread hole, and the first end cover 16 is provided with a first plum blossom groove 19 on the side away from the first rotating cap 12.

[0080] b. Then, the rotor body 45 of the processed driven rotor 40 is placed into the injection groove 5 of the cylinder 1, so that the side with the second threaded section 43 passes through the first end cover 16 until the step on the second threaded section 43 is limited to the first countersunk 33 of the first end cover 16. Then, the first rotating cap 12 is rotated to fix the rotor body 45.

[0081] c. Next, the second connecting end 3 with the positioning mechanism 4 is assembled to the other end of the cylinder 1 with fasteners, and a sealing ring is installed between the second connecting end 3 and the cylinder 1. The shaft 46 on the rotor body 45 passes through the second through hole 27 on the second end cover 22. The step on the rotor body 45 near the shaft 46 is limited to the second countersunk platform 35 of the second end cover 22, so that an injection molding space is formed between the first end cover 16, the second end cover 22 and the rotor body 45 of the driven rotor 40.

[0082] S5, driven rotor 40 engineering plastic layer 41 injection molding

[0083] a. Molten elastomer material is introduced into the injection space through the injection tube 10 on the first end cap 16, so that the outer surface of the rotor body 45 of the driven rotor 40 is covered with an engineering plastic layer 41.

[0084] b. After the engineering plastic layer 41 reaches the set strength, first remove the second connecting end 3, then fix the shaft 46, loosen the first rotating cap 12 until the first rotating cap 12 is disengaged from the second threaded section 43, and remove the entire first connecting end 2. Finally, remove the driven rotor 40 with the injection-molded engineering plastic layer 41 from the injection molding tank 5.

[0085] By designing the above process steps, not only can the injection molding quality of the engineering plastic layer 41 on the outer surface of the rotor body 45 be improved, but also the same injection mold can meet the injection molding processing of the engineering plastic layer 41 of the same pair of active rotors 39 and driven rotors 40, which greatly improves practicality and reduces manufacturing costs.

[0086] When the engineering plastic layer 41 of the driving rotor 39 and the engineering plastic layer 41 of the driven rotor 40 are injection molded with a double-layer structure, the following steps are included:

[0087] a. First, install the first plum blossom gasket 20 and the second plum blossom gasket 29 in the first plum blossom groove 19 and the second plum blossom groove 28 respectively, so that the first plum blossom gasket 20 forms a first gap 21 between the first plum blossom gasket 20 and the inner wall of the first plum blossom groove 19, and the second plum blossom gasket 29 forms a second gap 30 between the second plum blossom gasket 29 and the inner wall of the second plum blossom groove 28.

[0088] The first plum blossom gasket 20 is provided with a first mounting block 32. The first mounting block 32 is connected by the first connector 11 passing through the first end cover 16, so as to realize the fixed assembly between the first plum blossom gasket 20 and the first end cover 16.

[0089] The second plum blossom gasket 29 is provided with a second mounting block 34. The second mounting block 34 is connected by the second connector 23 passing through the second end cover 22, so as to realize the fixed assembly between the second plum blossom gasket 29 and the second end cover 22.

[0090] The thickness of the first plum blossom gasket 20 is less than the depth of the first plum blossom groove 19, and the thickness of the second plum blossom gasket 29 is less than the depth of the second plum blossom groove 28, which facilitates the processing and molding of the first engineering plastic layer 41 and the second engineering plastic layer 41. The first plum blossom gasket 20 is provided with an injection hole 31, which is connected to the injection tube 10, facilitating the injection molding of the first engineering plastic layer 41.

[0091] b. Then, the first connecting end 2 or the second connecting end 3 is assembled onto the cylinder 1, and the outer injection molding mechanism 36 is inserted into the injection groove 5 of the cylinder 1, so that one side of the outer injection molding mechanism 36 is limited within the first gap 21 or the second gap 30. Then, the side of the active rotor 39 or the driven rotor 40 with the threaded section is limited by the second connecting end 3 or the first connecting end 2, so that the other side of the outer injection molding mechanism 36 is limited within the second gap 30 or the first gap 21. A first injection space is formed between the first plum blossom gasket 20, the second plum blossom gasket 29, the outer injection molding mechanism 36 and the rotor body 45.

[0092] The outer injection molding mechanism 36 is formed by splicing several injection molding units end to end. Each injection molding unit includes an integrally molded arc segment 37 and a connecting segment 38. The connecting segment 38 is located on both sides of the arc segment 37, and the connecting segment 38 and the arc segment 37 have the same inclination direction, thereby improving the injection molding quality.

[0093] c. Then, molten elastomer material is introduced into the first injection space through the injection tube 10 on the first end cap 16 to form the first engineering plastic layer 41.

[0094] d. After the first engineering plastic layer 41 reaches the set strength, remove the second connecting end 3 and the second plum blossom gasket 29, then remove the first connecting end 2 and the first plum blossom gasket 20. Install the first connecting end 2 or the second connecting end 3 after removing the first plum blossom gasket 20 or the second plum blossom gasket 29 onto the cylinder 1. Then remove the outer injection molding mechanism 36 and install the second connecting end 3 or the first connecting end 2 onto the cylinder 1. A second injection space is formed between the first plum blossom groove 19, the second plum blossom groove 28, the injection groove 5 and the first engineering plastic layer 41.

[0095] e. Finally, the molten elastomer material is introduced into the second injection space through the injection tube 10 on the first end cap 16 to form the second engineering plastic layer 41.

[0096] f. After the second engineering plastic layer 41 reaches the set strength, first remove the second connecting end 3, then remove the first connecting end 2, and finally take out the active rotor 39 or driven rotor 40 with the injection-molded engineering plastic layer 41.

[0097] The above design steps not only meet the injection molding requirements when the engineering plastic layer 41 adopts an inner and outer two-layer injection molding structure, but also improve the performance of the active rotor 39 and the driven rotor 40, reduce friction and wear, reduce noise, and extend service life.

[0098] 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 manufacturing process for a rotor used in a rotor-type phase change liquid-cooled pump, characterized in that... Includes the following steps: S1. Rotor body machining and forming First, according to the design requirements, the rotor body of the active rotor and the rotor body of the driven rotor are integrally machined. The rotor body of the active rotor has a first threaded section and a plug rod integrally machined. The first threaded section and the plug rod are located at both ends of the rotor body and are on the same axis. The rotor body of the driven rotor has a second threaded section and a shaft integrally machined. The second threaded section and the shaft are located at both ends of the rotor body and are on the same axis. S2, Active rotor fixed assembly a. First, assemble the second connecting end with the positioning mechanism to one end of the cylinder with fasteners, and install a sealing ring between the second connecting end and the cylinder. At the same time, rotate the second rotating cap so that the second rotating cap is close to the second end cover. The second rotating cap is provided with a second internal thread hole, and the second end cover is provided with a second plum blossom groove on the side away from the second rotating cap. b. Then, place the processed rotor body into the injection groove of the cylinder, so that the side with the first threaded section passes through the second end cover until the step on the first threaded section is limited to the second countersunk platform of the second end cover. Rotate the second rotating cap to fix the rotor body through the second rotating cap. c. Next, the first connecting end with the positioning mechanism is assembled to the other end of the cylinder with fasteners, and a sealing ring is installed between the first connecting end and the cylinder. The insert rod on the rotor body passes through the first through hole on the first end cover and the through hole on the first rotating cap. The step on the rotor body near the insert rod end is limited to the first sink plate of the first end cover, so that an injection space is formed between the first end cover, the second end cover and the rotor body of the active rotor. S3, Active rotor engineering plastic layer injection molding a. Molten elastomer material is introduced into the injection space through the injection tube on the first end cap, so that the outer surface of the rotor body of the active rotor is covered with a layer of engineering plastic. b. After the engineering plastic layer reaches the set strength, first fix the insert rod, then loosen the second rotating cap until the second rotating cap is disengaged from the second threaded section, and remove the entire second connecting end. Then remove the first connecting end, and finally take the active rotor with the injection-molded engineering plastic layer out of the injection molding tank. S4, Driven rotor fixed assembly a. First, assemble the first connecting end with the positioning mechanism onto one side of the cylinder with fasteners, and install a sealing ring between the first connecting end and the cylinder. At the same time, rotate the first rotating cap so that the first rotating cap is close to the first end cap. The first rotating cap is provided with a first internal threaded hole, and the first end cap is provided with a first plum blossom groove on the side away from the first rotating cap. b. Then, place the processed driven rotor body into the injection groove of the cylinder, so that the side with the second thread section passes through the first end cover until the step on the second thread section is limited to the first countersunk platform of the first end cover. Rotate the first rotating cap to fix the rotor body through the first rotating cap. c. Next, the second connecting end with the positioning mechanism is assembled to the other end of the cylinder with fasteners, and a sealing ring is installed between the second connecting end and the cylinder. The shaft on the rotor body passes through the second through hole on the second end cover. The step on the rotor body near the shaft end is limited to the second sink plate of the second end cover, so that an injection space is formed between the first end cover, the second end cover and the rotor body of the driven rotor. S5, Driven rotor engineering plastic layer injection molding a. Molten elastomer material is introduced into the injection space through the injection tube on the first end cap, so that the outer surface of the rotor body of the driven rotor is covered with a layer of engineering plastic. b. After the engineering plastic layer reaches the set strength, first remove the second connecting end, then fix the shaft, loosen the first rotating cap until the first rotating cap is disengaged from the second threaded section, and remove the entire first connecting end. Finally, remove the driven rotor with the injection-molded engineering plastic layer from the injection molding tank. When the active rotor engineering plastic layer and the driven rotor engineering plastic layer are injection molded with a double-layer structure, the following steps are included: a. First, install the first plum blossom gasket and the second plum blossom gasket in the first plum blossom groove and the second plum blossom groove respectively, so that the first plum blossom gasket forms a first gap with the inner wall of the first plum blossom groove, and the second plum blossom gasket forms a second gap with the inner wall of the second plum blossom groove. b. Then, the first connecting end or the second connecting end is assembled onto the cylinder, and the outer injection molding mechanism is inserted into the injection groove of the cylinder, so that one side of the outer injection molding mechanism is limited to the first gap or the second gap. Then, the side of the active rotor or the driven rotor with the threaded section is limited by the second connecting end or the first connecting end, so that the other side of the outer injection molding mechanism is limited to the second gap or the first gap. The first plum blossom gasket, the second plum blossom gasket, the outer injection molding mechanism and the rotor body form a first injection space. c. Then, molten elastomer material is introduced into the first injection space through the injection tube on the first end cap to form the first layer of engineering plastic. d. After the first engineering plastic layer reaches the set strength, remove the second connecting end and the second plum blossom gasket, then remove the first connecting end and the first plum blossom gasket. Install the first connecting end or the second connecting end after removing the first plum blossom gasket or the second plum blossom gasket onto the cylinder. Then remove the outer injection molding mechanism and install the second connecting end or the first connecting end onto the cylinder. A second injection space is formed between the first plum blossom groove, the second plum blossom groove, the injection groove and the first engineering plastic layer. e. Finally, the molten elastomer material is introduced into the second injection space through the injection tube on the first end cap to form the second layer of engineering plastic. f. After the second engineering plastic layer reaches the set strength, first remove the second connecting end, then remove the first connecting end, and finally take out the active rotor or driven rotor with the injection-molded engineering plastic layer.

2. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 1, characterized in that: The thickness of the first plum blossom gasket is less than the depth of the first plum blossom groove, and the thickness of the second plum blossom gasket is less than the depth of the second plum blossom groove.

3. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 1, characterized in that: The outer injection molding mechanism is formed by splicing together several injection molding units end to end. Each injection molding unit includes an integrally formed arc segment and a connecting segment. The connecting segment is located on both sides of the arc segment, and the connecting segment has the same inclination direction as the arc segment.

4. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 1, characterized in that: The first plum blossom gasket is provided with an injection hole, which is connected to the injection tube.

5. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 1, characterized in that: The positioning mechanism includes a positioning ring and a fixing post, and the positioning ring is connected to the first end cap and the second end cap through the fixing post.

6. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 1, characterized in that: Both ends of the cylinder are provided with a first sealing groove, and the first end cap and the second end cap are respectively provided with a second sealing groove and a third sealing groove. A sealing ring is installed between the first sealing groove and the second sealing groove and the third sealing groove.

7. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 1, characterized in that: The injection molding groove has a plum blossom-shaped structure and is inclined in a clockwise or counterclockwise direction.

8. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 1, characterized in that: The first end cap has a first ear plate evenly distributed on its outer circumferential side surface, the second end cap has a second ear plate evenly distributed on its outer circumferential side surface, and the two ends of the cylinder have a limiting ear plate evenly distributed on their outer circumferential side surfaces. The limiting ear plate has a limiting groove that matches both the first ear plate and the second ear plate. The first end cap, the second end cap, and the cylinder are fixedly connected by fasteners passing through the first ear plate and the limiting ear plate, and the second ear plate and the limiting ear plate.

9. The manufacturing process of a rotor for a rotor-type phase change liquid cooling pump according to claim 8, characterized in that: The first ear plate and the second ear plate protrude from the end faces of the first end cap and the second end cap, respectively.

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