An injection mold for manufacturing the stator of a plum blossom liquid pump

Abstract

This invention discloses an injection mold for manufacturing the stator of a plum blossom liquid pump, comprising a lower mold and an upper mold. The upper mold is connected to the lower mold via a locking mechanism. The upper mold has a plum blossom groove, a third injection unit, and a core. The core extends through the upper mold along the plum blossom groove and includes a first injection unit and a second injection unit. The first injection unit is connected to the upper mold via a first fixing mechanism, and adjacent first injection units are connected via a second fixing mechanism. The second injection unit wraps around the outside of the first injection unit and is detachably connected to the first injection unit via a first locking block. This invention not only enables secondary injection molding of the engineering plastic layer but also controls the deformation of the engineering plastic layer, improves the adhesion strength and stability between the engineering plastic layer and the metal body, and reduces friction and wear during the operation of the plum blossom liquid pump.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to an injection mold for manufacturing the stator of a plum blossom liquid pump. Background Technology

[0002] In the field of refrigerant delivery, positive displacement pumps, rotary pumps, or centrifugal pumps are traditionally used. During operation, these conventional pumping devices experience wear on moving parts, causing metal powder to flake off from the surface of components and potentially burning out the motor. Furthermore, conventional pumps require lubricating oil or other lubricating agents to operate.

[0003] Computer servers, network devices, and other equipment in a data center generate heat during operation. This heat needs to be removed for the data center equipment to function properly. The performance of a data center is affected by its operating temperature; inadequate cooling of components will impact its efficiency. Data centers are typically organized into rows of racks containing electronic devices that generate heat. Heat can significantly degrade data center performance, for example, causing slow request processing, excessive energy consumption, and premature component failure.

[0004] However, in data center cooling systems, the lubricating oil or other media used in the pumping equipment pose a risk of flowing into the system through the cooling channels. Therefore, data center cooling systems operate in an oil-free state; and the wear of the internal friction pairs of the unlubricated pumping equipment affects the operating efficiency and service life of the cooling system.

[0005] In the prior art, when the stator of a liquid pump is injection molded, an engineering plastic layer is generally formed by a one-time injection molding process. Conventional engineering plastic injection layers shrink after cooling and are prone to deformation. At the same time, due to defects in structural design, the engineering plastic layer is prone to falling off, affecting the processing quality and service life of the stator, and thus affecting the friction and wear of the liquid pump during operation. Summary of the Invention

[0006] The purpose of this invention is to provide a technical solution for manufacturing injection molds for stators of plum blossom liquid pumps, which addresses the shortcomings of existing technologies. This solution not only enables secondary injection molding of the engineering plastic layer on the stator, but also controls the deformation of the engineering plastic layer, improves the adhesion strength and stability between the engineering plastic layer and the metal body, further improves the processing quality of the stator, extends the service life of the stator, and reduces friction and wear during the operation of the plum blossom liquid pump.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An injection mold for manufacturing a stator of a plum blossom-shaped liquid pump, the stator comprising a metal body and an engineering plastic layer, characterized in that: it includes...

[0009] The lower mold is used to hold the metal body;

[0010] The upper mold is connected to the lower mold via a locking mechanism. The upper mold is provided with a plum blossom groove and a third injection unit. The third injection unit is distributed in a ring along the plum blossom groove.

[0011] The core body extends through the upper mold along the plum blossom groove. The core body includes at least two first injection molding units and at least two second injection molding units. The first injection molding units are connected to the upper mold through a first fixing mechanism. Adjacent first injection molding units are connected through a second fixing mechanism. The second injection molding units wrap around the outside of the first injection molding units and are detachably connected to the first injection molding units through a first locking block.

[0012] The engineering plastic layer is formed by secondary injection molding along the metal body through the upper mold, lower mold, first injection monomer, second injection monomer and third injection monomer.

[0013] The above structural design not only enables secondary injection molding of the engineering plastic layer on the stator, but also controls the deformation of the engineering plastic layer, improves the bonding strength and stability between the engineering plastic layer and the metal body, further improves the processing quality of the stator, extends the service life of the stator, and reduces friction and wear during the operation of the plum blossom liquid pump.

[0014] Furthermore, the lower mold has a cavity, and the bottom of the cavity has a limiting hole and an outlet runner forming block. The limiting hole is located at the bottom center of the lower mold, and the outlet runner forming block is distributed in a ring. The limiting hole is used to limit the first injection molding unit, improve the stability and reliability of the first injection molding unit installation, and further improve the injection quality. The outlet runner forming block facilitates the support of the outlet runner on the metal body, improving the installation stability of the metal body.

[0015] Furthermore, the locking mechanism includes a first fixing strip and a second fixing strip. The first fixing strip is distributed in a ring on the outer circumferential side of the lower mold, and the second fixing strip is distributed in a ring on the outer circumferential side of the upper mold. The first fixing strip is provided with a slot, and the second fixing strip is provided with a locking block. The locking block matches the slot. The first fixing strip is connected to the second fixing strip by a first fastener. By inserting the locking block into the slot, the first fixing strip and the second fixing strip are fitted together. By passing the first fixing strip and the second fixing strip through the first fastener, the upper mold and the lower mold are fixedly assembled, thereby improving the injection molding quality of the engineering plastic layer.

[0016] Furthermore, the third injection molding unit includes a pressure plate and fastening screws. The upper mold has grooves distributed in a ring. The pressure plate is embedded in the grooves and connected to the top of the upper mold by fastening screws. The pressure plate is provided with injection holes. The fastening screws can improve the connection stability between the pressure plate and the upper mold and ensure the quality of the first injection molding. After the fastening screws and pressure plate are removed, a second injection molding can be performed.

[0017] Furthermore, the upper mold is equipped with an injection tube, which is connected to an injection hole. Molten elastomer material can be injected into the mold through the injection tube to achieve injection molding of the engineering plastic layer.

[0018] Furthermore, the first fixing mechanism includes a first assembly block, a second assembly block, and a second fastener. The first assembly block is connected to the upper mold, and the second assembly block is connected to the first injection molding unit. Adjacent first assembly blocks and second assembly blocks are connected by the second fastener. The second fastener improves the connection stability between the first assembly block and the second assembly block, ensuring injection molding quality. Removing the second fastener allows for demolding via the second assembly block.

[0019] Furthermore, each first injection molding unit has a T-shaped block and a T-shaped groove on two adjacent end faces. By inserting the T-shaped block into the T-shaped groove, the assembly between two adjacent first injection molding units can be achieved. The design of the T-shaped block and the T-shaped groove can ensure that the first injection molding units are removed one by one during demolding, ensuring the quality of demolding and preventing the engineering plastic layer from falling off.

[0020] Furthermore, each first injection unit has an arc-shaped block at its bottom, and adjacent arc-shaped blocks cooperate to form a ring structure. The ring structure matches the limiting hole. The design of the arc-shaped block can fix the first injection unit to the lower mold, thereby improving the injection quality.

[0021] Furthermore, the second fixing mechanism includes a third assembly block and a third fastener. The third assembly block is located on the top of the first injection molding unit. Adjacent third assembly blocks are connected by the third fastener. By passing the third fastener through the third assembly block, a fixed connection can be achieved between adjacent first injection molding units, and demolding is convenient after injection molding.

[0022] Furthermore, the core also includes a sealing strip, which has a plum blossom-shaped closed structure. The sealing strip is detachably connected to the first injection molding unit through a second locking block. After the first injection molding is completed, the second injection molding unit is removed and the sealing strip is then assembled to prevent the injection material from overflowing during the second injection molding, thereby improving the injection molding quality.

[0023] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0024] 1. It can not only realize the secondary injection molding of the engineering plastic layer from the inside of the stator, but also control the deformation of the engineering plastic layer, improve the bonding strength and stability between the engineering plastic layer and the metal body, further improve the processing quality of the stator, extend the service life of the stator, and reduce the friction and wear of the plum blossom liquid pump during operation.

[0025] 2. By inserting the card block into the card slot, the first fixing strip and the second fixing strip are fitted together, and the first fastener passes through the first fixing strip and the second fixing strip to achieve fixed assembly between the upper mold and the lower mold, thereby improving the injection molding quality of the engineering plastic layer.

[0026] 3. Tightening the screws can improve the connection stability between the pressure plate and the upper mold, ensuring the quality of the first injection molding. After removing the screws and the pressure plate, a second injection molding can be performed.

[0027] 4. The second fastener improves the connection stability between the first assembly block and the second assembly block, ensuring injection molding quality. Removing the second fastener allows for demolding via the second assembly block. Attached image description:

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] Figure 1 This is a rendering of an injection mold for manufacturing a plum blossom liquid pump stator according to the present invention;

[0030] Figure 2 This is a schematic diagram of the lower mold in this invention;

[0031] Figure 3 This is a schematic diagram showing the connection between the upper mold and the core in this invention;

[0032] Figure 4 for Figure 3 Schematic diagram of the structure in direction A;

[0033] Figure 5 This is a schematic diagram showing the connection between the first injection molding monomer and the second injection molding monomer in this invention;

[0034] Figure 6 This is a schematic diagram of the sealing strip in this invention;

[0035] Figure 7 This is a rendering of the upper mold in this invention;

[0036] Figure 8 for Figure 7 Schematic diagram of the structure in the B direction;

[0037] Figure 9 This is a schematic diagram showing the distribution of the third injection molding monomer in this invention;

[0038] Figure 10 This is a rendering of the stator in this invention;

[0039] Figure 11 for Figure 10 Schematic diagram of the structure in the C-direction;

[0040] Figure 12This is a cross-sectional view of the stator in this invention.

[0041] In the diagram: 1-Stator; 101-Inlet channel; 102-Protrusion; 103-Compression chamber; 104-First guide channel; 105-Ear plate; 106-Outlet channel; 107-Second guide channel; 108-Sealing groove; 109-Weight reduction hole; 110-Metal body; 111-Engineering plastic layer; 112-Groove;

[0042] 2-Lower mold; 201-Cavity; 202-Limiting hole; 203-Outlet flow channel forming block;

[0043] 3-Upper mold; 301-Injection tube; 302-Plum blossom groove; 303-Groove;

[0044] 4-Locking mechanism; 401-First fixing bar; 402-Second fixing bar; 403-First fastener; 404-Slot; 405-Block;

[0045] 5-Core; 501-First injection molding unit; 502-Second injection molding unit; 503-T-block; 504-T-slot; 505-Arc-shaped block; 506-First locking block; 507-Sealing strip; 508-Second locking block;

[0046] 6-First fixing mechanism; 601-First assembly block; 602-Second assembly block; 603-Second fastener;

[0047] 7-Second fixing mechanism; 701-Third assembly block; 702-Third fastener;

[0048] 8-Third injection molding unit; 801-Pressure plate; 802-Fasting screw; 803-Injection hole. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] The stator corresponding to the mold of this invention is as follows: Figures 10 to 12 As shown, the stator 1 has an inlet channel 101 and an outlet channel 106 at both ends. The stator 1 has an integrally cast compression chamber 103. The inlet channel 101 has protrusions 102 arranged in a quincunx pattern. A first guide channel 104 is formed between two adjacent protrusions 102. The inlet channel 101 is connected to the compression chamber 103 through the first guide channel 104. The outlet channel 106 is arranged in a quincunx pattern. The outlet channel 106 is connected to the compression chamber 103 through a second guide channel 107. Through the design of the above structure, it can be ensured that the liquid enters the compression chamber 103 from the inlet channel 101 through the first guide channel 104, and after being compressed by the rotor and the stator 1, it enters each outlet channel 106 through the second guide channel 107 and is discharged. The stator 1 has a weight-reducing cavity and a sealing groove 108 on the end face near the outlet flow channel 106. The weight-reducing holes 109 are distributed in a ring shape. The sealing groove 108 forms a sealing structure along the end faces of the outlet flow channel 106 and the compression cavity 103. The weight-reducing holes 109 can greatly reduce the weight of the entire stator 1, further reducing the weight of the liquid pump. The sealing groove 108 is used to install a sealing ring. The stator 1 has an ear plate 105 on its outer circumferential side for assembly.

[0053] The stator 1 includes a metal body 110 and an engineering plastic layer 111. The thickness of the engineering plastic layer 111 is 2-4 mm. Grooves 112 are provided on the side of the metal body 110 near the compression chamber 103 and on the top surface of the protrusion. The engineering plastic layer 111 is connected to the metal body 110 through the grooves 112. The design of the grooves 112 helps to wrap the engineering plastic layer 111 around the side of the compression chamber 103 and the top surface of the protrusion, making it less likely to fall off and reducing friction and wear between the rotor and the stator 1 when the rotor rotates. The metal body 110 can be made of aluminum alloy, which can ensure the strength of the entire stator 1.

[0054] The engineering plastic layer 111 is made of elastomer material, which can be rubber, polyetheretherketone (PEEK), etc., preferably PEEK. This material is non-conductive and has good affinity. Even if it wears down, it will not damage the motor. At the same time, it can run dry. In the cooling system, the refrigerant is easy to evaporate and produce gas. The gas will exist in the dry running, which can meet the requirements of dry running.

[0055] like Figures 1 to 9As shown, this is an injection mold for manufacturing a stator 1 of a plum blossom liquid pump according to the present invention. The stator 1 includes a metal body 110 and an engineering plastic layer 111, and includes a lower mold 2, an upper mold 3 and a core 5. The lower mold 2 is used to place the metal body 110 to ensure that the metal body 110 is placed vertically and to improve the casting quality of the engineering plastic layer 111.

[0056] The lower mold 2 has a cavity 201. The bottom of the cavity 201 has a limiting hole 202 and an outlet runner forming block 203. The limiting hole 202 is located at the center of the bottom of the lower mold 2. The outlet runner forming block 203 is distributed in a ring. The limiting hole 202 is used to limit the first injection molding unit 501, improve the stability and reliability of the installation of the first injection molding unit 501, and further improve the quality of injection molding. The outlet runner forming block 203 facilitates the support of the outlet runner 106 on the metal body 110, and improves the installation stability of the metal body 110.

[0057] The upper mold 3 is connected to the lower mold 2 via a locking mechanism 4. The locking mechanism 4 includes a first fixing strip 401 and a second fixing strip 402. The first fixing strip 401 is distributed in a ring on the outer circumferential side of the lower mold 2, and the second fixing strip 402 is distributed in a ring on the outer circumferential side of the upper mold 3. The first fixing strip 401 is provided with a slot 404, and the second fixing strip 402 is provided with a locking block 405. The locking block 405 matches the slot 404. The first fixing strip 401 is connected to the second fixing strip 402 via a first fastener 403. The locking block 405 is inserted into the slot 404 to achieve the fit between the first fixing strip 401 and the second fixing strip 402. The first fastener 403 passes through the first fixing strip 401 and the second fixing strip 402 to achieve the fixed assembly between the upper mold 3 and the lower mold 2, thereby improving the injection molding quality of the engineering plastic layer 111.

[0058] The upper mold 3 is provided with a plum blossom groove 302 and a third injection molding unit 8, which is arranged in a ring along the plum blossom groove 302. The third injection molding unit 8 includes a pressure plate 801 and a fastening screw 802. The upper mold 3 has a ring-shaped groove 303, and the pressure plate 801 is embedded in the groove 303 and connected to the top of the upper mold 3 by the fastening screw 802. The pressure plate 801 is provided with an injection hole 803. The fastening screw 802 can improve the connection stability between the pressure plate 801 and the upper mold 3, ensuring the quality of the first injection molding. After removing the fastening screw 802 and the pressure plate 801, a second injection molding can be performed. The upper mold 3 is provided with an injection tube 301, which connects to the injection hole 803. Molten elastomer material can be injected into the mold through the injection tube 301 and the injection hole 803 to realize the injection molding of the engineering plastic layer 111.

[0059] The core 5 passes through the upper mold 3 along the plum blossom groove 302. The core 5 includes at least two first injection molding units 501 and at least two second injection molding units 502. In this application, three first injection molding units 501 and three second injection molding units 502 are preferred. Each first injection molding unit 501 has a T-shaped block 503 and a T-shaped groove 504 on two adjacent end faces. The T-shaped block 503 is inserted into the T-shaped groove 504 to achieve the assembly between two adjacent first injection molding units 501. The design of the T-shaped block 503 and the T-shaped groove 504 can ensure that the first injection molding units 501 are removed one by one during demolding, ensuring the quality of demolding and preventing the engineering plastic layer 111 from falling off. Each first injection molding unit 501 has an arc-shaped block 505 at its bottom. Adjacent arc-shaped blocks 505 cooperate to form a ring structure. The ring structure matches the limiting hole 202. The design of the arc-shaped block 505 can fix the first injection molding unit 501 to the lower mold 2, improving the quality of injection molding.

[0060] The first injection molding unit 501 is connected to the upper mold 3 through the first fixing mechanism 6. The first fixing mechanism 6 includes a first assembly block 601, a second assembly block 602, and a second fastener 603. The first assembly block 601 is connected to the upper mold 3, and the second assembly block 602 is connected to the first injection molding unit 501. Adjacent first assembly blocks 601 and second assembly blocks 602 are connected by the second fastener 603. The second fastener 603 improves the connection stability between the first assembly blocks 601 and the second assembly blocks 602, ensuring injection molding quality. Demolding can be achieved by removing the second fastener 603 and using the second assembly block 602.

[0061] Two adjacent first injection molding units 501 are connected by a second fixing mechanism 7. A second injection molding unit 502 wraps around the outside of a first injection molding unit 501 and is detachably connected to the first injection molding unit 501 via a first locking block 506. The second fixing mechanism 7 includes a third assembly block 701 and a third fastener 702. The third assembly block 701 is located on the top of the first injection molding unit 501, and two adjacent third assembly blocks 701 are connected by the third fastener 702. The third fastener 702 passing through the third assembly block 701 allows for a fixed connection between adjacent first injection molding units 501 and facilitates demolding after injection molding. The first, second, and third fasteners in this invention all use a bolt and nut structure for easy disassembly and assembly.

[0062] The core 5 also includes a sealing strip 507, which has a plum blossom-shaped closed structure. The sealing strip 507 is detachably connected to the first injection molding unit 501 through the second locking block 508. After the first injection molding is completed, the second injection molding unit 502 is removed and the sealing strip 507 is then assembled to prevent the injection material from overflowing during the second injection molding and to improve the injection quality.

[0063] The engineering plastic layer 111 is subjected to secondary injection molding along the metal body 110 through the upper mold 3, lower mold 2, first injection molding monomer 501, second injection molding monomer 502 and third injection molding monomer 8.

[0064] Through the above structural design, not only can the secondary injection molding of the engineering plastic layer 111 on the stator 1 be realized, but also the deformation of the engineering plastic layer 111 can be controlled, the bonding strength and stability between the engineering plastic layer 111 and the metal body 110 can be improved, the processing quality of the stator 1 can be further improved, the service life of the stator 1 can be extended, and the friction and wear of the plum blossom liquid pump during operation can be reduced.

[0065] In practical use, this invention first forms the required metal body through integral casting. The metal body is placed in the cavity of the lower mold, and its position is limited by the outlet runner forming block and the weight-reducing hole forming block on the side. Then, the third injection molding unit is installed in the groove of the upper mold. Next, the first injection molding units are spliced ​​together, and the second injection molding unit is installed along the outer side of the first injection molding unit. The first and second injection molding units are then installed as a whole into the upper mold and fixed. The entire upper mold is then installed onto the lower mold and fixed. The first layer of engineering plastic, with a thickness of 2.5mm, is then poured. After the first layer of engineering plastic is poured, two adjacent first fixing mechanisms and two second fixing mechanisms are removed. The first and second injection molding units are removed from the mold, and then adjacent first and second injection molding units are removed until all are removed. The upper mold is then disassembled. Finally, the third injection molding unit on the upper mold is removed, and the second injection molding unit is removed from the first injection molding unit. A sealing strip is installed along the outside of each first injection molding unit. The first injection molding units are then spliced ​​together, and the sealing strip and the first injection molding units are assembled together with the upper mold. The assembled upper mold is installed on the lower mold, and then the second engineering plastic layer is injection molded. Molten elastomer material is poured through the injection tube to form the second engineering plastic layer. After molding, the sealing strip is removed first, then the first injection molding units are removed one by one, and finally the upper mold is removed to achieve demolding.

[0066] 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. An injection mold for manufacturing a stator of a plum blossom-shaped liquid pump, the stator comprising a metal body and an engineering plastic layer, Its features are: include The lower mold is used to place the metal body; The upper mold is connected to the lower mold via a locking mechanism. The upper mold is provided with a plum blossom groove and a third injection molding unit, and the third injection molding unit is distributed in a ring along the plum blossom groove. The core body extends through the upper mold along the plum blossom groove. The core body includes at least two first injection molding units and at least two second injection molding units. The first injection molding units are connected to the upper mold through a first fixing mechanism. Adjacent first injection molding units are connected through a second fixing mechanism. The second injection molding units wrap around the outside of the first injection molding units and are detachably connected to the first injection molding units through a first locking block. The engineering plastic layer is subjected to secondary injection molding along the metal body through the upper mold, the lower mold, the first injection molding unit, the second injection molding unit, and the third injection molding unit.

2. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 1, characterized in that: The lower mold has a cavity, and the bottom of the cavity has a limiting hole and an outlet flow channel forming block. The limiting hole is located at the center of the bottom of the lower mold, and the outlet flow channel forming block is distributed in a ring.

3. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 1, characterized in that: The locking mechanism includes a first fixing bar and a second fixing bar. The first fixing bar is distributed in a ring on the outer circumferential side of the lower mold, and the second fixing bar is distributed in a ring on the outer circumferential side of the upper mold. The first fixing bar is provided with a slot, and the second fixing bar is provided with a locking block. The locking block matches the slot, and the first fixing bar is connected to the second fixing bar by a first fastener.

4. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 1, characterized in that: The third injection molding unit includes a pressure plate and fastening screws. The upper mold has grooves distributed in a ring. The pressure plate is embedded in the grooves and connected to the top of the upper mold by the fastening screws. The pressure plate is provided with injection holes.

5. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 4, characterized in that: The upper mold is provided with an injection tube, which is connected to the injection hole.

6. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 2, characterized in that: The first fixing mechanism includes a first assembly block, a second assembly block, and a second fastener. The first assembly block is connected to the upper mold, and the second assembly block is connected to the first injection molding unit. Adjacent first assembly blocks and second assembly blocks are connected by the second fastener.

7. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 6, characterized in that: Each of the first injection molding units has a T-shaped block and a T-shaped groove on two adjacent end faces. The assembly between two adjacent first injection molding units is achieved by inserting the T-shaped block into the T-shaped groove.

8. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 6, characterized in that: Each of the first injection molding units has an arc-shaped block at its bottom, and adjacent arc-shaped blocks cooperate to form a ring structure, which matches the limiting hole.

9. The injection mold for manufacturing a plum blossom-shaped liquid pump stator according to claim 1, characterized in that: The second fixing mechanism includes a third assembly block and a third fastener. The third assembly block is located on the top of the first injection molding unit, and adjacent third assembly blocks are connected by the third fastener.

10. The injection mold for manufacturing a plum blossom liquid pump stator according to claim 1, characterized in that: The core also includes a sealing strip, which has a plum blossom-shaped closed structure and is detachably connected to the first injection-molded unit via a second locking block.

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