An injection mold for manufacturing a scroll liquid pump stator

Abstract

The application discloses a kind of injection mould for manufacturing scroll liquid pump stator, including lower mould, cover plate, upper mould and primary injection shell, cover plate is connected to lower mould by second fastening mechanism, cover plate is equipped with through slot, the inner wall of through slot is fixed with locating block, first arc slot and second arc slot are formed between adjacent two locating blocks;Upper mould is limited in through slot, and upper mould includes at least two mutually spliced injection monomers, injection monomer is connected to cover plate by first fastening mechanism, for secondary injection molding of engineering plastic layer, primary injection shell is sleeved on upper mould, primary injection shell is resisted to locating block, for primary injection molding of engineering plastic layer.The application not only can realize the secondary injection molding of engineering plastic layer on the surface of scroll liquid pump stator, but also is not easy to cause the drop of engineering plastic layer, improve the adhesion strength and stability between engineering plastic layer and metal body, it is favorable to reduce the friction and abrasion between rotor and stator when scroll liquid pump works.

Description

Technical Field

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

[0002] Data centers bear increasingly complex task processing burdens, and the growing application load puts immense pressure on them. Traditional data centers consist of multiple separate computing resources contained within a shell structure. Data centers, or other physical spaces, benefit from adequate and optimized power and cooling infrastructure. Maintaining data centers at the required temperature helps prevent computer hardware (such as IT infrastructure) from overheating and malfunctioning. Therefore, many data centers are cooled to relatively low temperatures to improve equipment reliability and lifespan, and to avoid downtime for repairs and / or replacements.

[0003] Data center cooling systems handle the heat dissipation pressure that is difficult to release from data centers. Cooling towers use water as a circulating coolant to lower the temperature of the data center. Cooling towers can cool the data center and release waste heat into the atmosphere.

[0004] In the field of refrigerant delivery, positive displacement pumps, rotary pumps or centrifugal pumps are traditionally used for refrigerant delivery. During operation, wear can cause metal powder to fall off, resulting in motor burnout. At the same time, conventional pumps require the presence of lubricating oil or lubricant during operation to reduce pump wear.

[0005] Adding an engineering plastic layer to the outer surface of the stator of a scroll pump can not only reduce stator wear but also prevent metal powder from falling and burning out the motor. However, the current engineering plastic layer is prone to peeling off during the injection molding process, causing wear between the rotor and stator and affecting the normal operation of the scroll pump. Summary of the Invention

[0006] The purpose of this invention is to provide a technical solution for manufacturing an injection mold for a vortex pump stator, addressing the shortcomings of existing technologies. Through the design of the above structure, not only can the engineering plastic layer on the surface of the vortex pump stator be injection molded in a secondary manner, but it is also less likely to cause the engineering plastic layer to fall off, thereby improving the adhesion strength and stability between the engineering plastic layer and the metal body. This helps to reduce the friction and wear between the rotor and the stator when the vortex pump is working.

[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 vortex pump, the stator comprising a metal body and an engineering plastic layer, characterized in that: the injection mold includes...

[0009] A mold is used to limit the metal body;

[0010] A cover plate is connected to the lower mold via a second fastening mechanism. The cover plate has a through groove, and a positioning block is fixed to the inner wall of the through groove. A first arc groove and a second arc groove are formed between two adjacent positioning blocks. Both the first arc groove and the second arc groove are connected to the through groove.

[0011] The upper mold is located within the through groove. The upper mold includes at least two injection molding units that are spliced ​​together. The injection molding units are connected to the cover plate by a first fastening mechanism and are used for secondary injection molding of the engineering plastic layer.

[0012] The primary injection molded housing is fitted onto the upper mold and abuts against the positioning block, used for the primary injection molding of the engineering plastic layer.

[0013] The above structural design not only enables secondary injection molding of the engineering plastic layer on the surface of the vortex pump stator, but also makes it less likely for the engineering plastic layer to fall off, improving the adhesion strength and stability between the engineering plastic layer and the metal body, which helps to reduce friction and wear between the rotor and stator when the vortex pump is working.

[0014] Furthermore, the top surface of the injection molding unit is provided with an injection tube and a connector. The injection molding unit is provided with a secondary scroll forming cavity. The primary injection molding shell is matched with the secondary scroll forming cavity. The primary injection molding shell is detachably connected to the injection molding unit through the connector, which facilitates the installation and disassembly of the primary injection molding shell and the injection molding unit.

[0015] Furthermore, the thickness of the injection-molded shell is 0.5 to 1 mm.

[0016] Furthermore, the injection-molded housing includes at least two injection molding units that are respectively matched with the injection molding unit. Each injection molding unit includes an integrally formed base plate, a first scroll forming plate, a second scroll forming plate, a first arc-shaped strip, and a second arc-shaped strip. Both the first and second scroll forming plates are disposed on the base plate, with the first scroll forming plate located inside the second scroll forming plate. The first and second arc-shaped strips are respectively connected to the second scroll forming plate and are respectively matched with a first arc-shaped groove and a second arc-shaped groove. Both the first and second arc-shaped strips are provided with injection holes and fixing blocks. The injection tube is connected, the fixing block is connected to the connector, the interior of the first arc strip is hollow, and two adjacent first arc strips are spliced ​​to form a primary spiral forming cavity. The bottom plate facilitates the injection molding of the engineering plastic layer on the bottom inner side of the stator. The first spiral forming plate and the second spiral forming plate facilitate the injection molding of the spiral strip inside the stator and the engineering plastic layer on the inner wall of the stator. The first arc strip and the second arc strip facilitate the injection molding of the engineering plastic layer on the top surface of the first and second convex strips inside the stator. Molten elastomer material can enter between the primary injection shell and the metal body through the injection hole, which facilitates the primary injection molding of the engineering plastic layer.

[0017] Furthermore, the distance between the injection-molded shell and the metal body is 2-3 mm.

[0018] Furthermore, the second fastening mechanism includes a first ear plate, a second ear plate, and a second fastener. The first ear plate is distributed in a ring on the outer circumferential side of the lower mold, and the second ear plate is distributed in a ring on the outer circumferential side of the cover plate. The first ear plate is connected to the second ear plate by the second fastener, which facilitates the installation and disassembly of the cover plate and the lower mold.

[0019] Furthermore, a limiting block is provided on the bottom surface of the cover plate, and a limiting groove is provided on the top surface of the lower mold. The limiting block matches the limiting groove. By the limiting block being inserted into the limiting groove, the quick positioning and assembly between the cover plate and the lower mold can be achieved, improving the stability of the installation between the upper mold and the lower mold, and improving the precision and quality of injection molding.

[0020] Furthermore, the first fastening mechanism includes a first mounting block, a second mounting block, and a first fastener. The first mounting block is disposed on the injection molding unit, and the second mounting block is disposed on the cover plate. The first mounting block is connected to the second mounting block through the first fastener, which can realize the installation and disassembly between the injection molding unit and the cover plate, facilitating demolding.

[0021] Furthermore, the lower mold is provided with a placement cavity, and the bottom surface of the placement cavity is provided with positioning posts and retaining strips. The retaining strips are distributed in a ring around the positioning posts. The placement cavity is used to place the stator. The positioning posts and retaining strips are respectively engaged into the bearing holes and liquid outlet holes of the stator to achieve the positioning of the stator.

[0022] Furthermore, a flange groove is provided on the top surface of the placement cavity, and a flange cover is provided on the bottom surface of the cover plate. The flange cover matches the flange groove, and an annular strip is provided on the flange cover. Through the design of the flange groove and the flange cover, it is convenient to limit the stator and prevent it from moving during the injection molding process of the engineering plastic layer, which would affect the injection molding effect. The annular strip is used to hold the liquid inlet channel of the stator, thereby improving the injection molding quality and precision of the engineering plastic layer.

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

[0024] 1. This invention not only enables secondary injection molding of the engineering plastic layer on the surface of the vortex pump stator, but also makes it less likely for the engineering plastic layer to fall off, thereby improving the bonding strength and stability between the engineering plastic layer and the metal body, which helps to reduce friction and wear between the rotor and stator when the vortex pump is working.

[0025] 2. The base plate facilitates the injection molding of the engineering plastic layer on the inner bottom of the stator. The first and second scroll forming plates facilitate the injection molding of the scroll strips inside the stator and the engineering plastic layer on the inner wall of the stator. The first and second arc strips facilitate the injection molding of the engineering plastic layer on the top surface of the first and second convex strips inside the stator. Molten elastomer material can enter between the primary injection shell and the metal body through the injection hole, facilitating the primary injection molding of the engineering plastic layer.

[0026] 3. The design of the flange groove and flange cover facilitates the limiting of the stator, preventing it from moving during the injection of the engineering plastic layer and affecting the injection effect. The ring bar is used to hold the liquid inlet channel of the stator, improving the injection quality and precision of the engineering plastic layer. Attached image description:

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is a rendering of an injection mold for manufacturing a vortex pump stator according to the present invention;

[0029] Figure 2 This is a schematic diagram of the lower mold in this invention;

[0030] Figure 3 This is a schematic diagram showing the connection between the upper mold, the primary injection molded housing, and the cover plate in this invention;

[0031] Figure 4 for Figure 3 Schematic diagram of the structure in direction A;

[0032] Figure 5 This is a schematic diagram of the cover plate in this invention;

[0033] Figure 6 This is a rendering of the one-time injection molded housing in this invention;

[0034] Figure 7 This is a rendering of the stator in this invention;

[0035] Figure 8 for Figure 7 Rendering of the B direction;

[0036] Figure 9 This is a cross-sectional view of the stator in this invention.

[0037] In the diagram: 1-lower mold; 101-placement cavity; 102-flange groove; 103-limiting groove; 104-positioning pin; 105-clamping strip;

[0038] 2-Cover plate; 201-Limiting block; 202-Flange cover; 203-Annular strip; 204-Positioning block; 205-Through groove; 206-First arc groove; 207-Second arc groove;

[0039] 3-Upper mold; 301-Injection unit; 302-Injection tube; 303-Connector;

[0040] 4-First fastening mechanism; 401-First mounting block; 402-Second mounting block; 403-First fastener;

[0041] 5-Second fastening mechanism; 501-First ear plate; 502-Second ear plate; 503-Second fastener;

[0042] 6-One-time injection molded housing; 601-Base plate; 602-First scroll forming plate; 603-Second scroll forming plate; 604-First arc-shaped strip; 605-Second arc-shaped strip; 606-Injection hole; 607-Fixing block; 608-Slot;

[0043] 7-One-time spiral forming cavity;

[0044] 801-Inlet flow channel; 802-Vortex bar; 803-First convex bar; 804-Liquid inlet channel; 805-Liquid outlet hole; 806-Bearing hole; 807-Flange; 808-Second convex bar; 809-Pump body; 810-Engineering plastic layer; 811-Groove. Detailed Implementation

[0045] 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.

[0046] 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.

[0047] 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.

[0048] like Figures 7 to 9As shown, the stator structure of the scroll liquid pump to be injection molded according to the present invention includes an integrally molded pump body 809, flange 807 and scroll bar 802. The flange 807 is located on the open side of the pump body 809, and the scroll bar 802 is fixed inside the pump body 809. The bottom center of the pump body 809 is provided with a bearing hole 806 and a liquid outlet hole 805. The liquid outlet hole 805 is distributed in a ring around the bearing hole 806.

[0049] The pump body 809 has an integrally formed first protrusion 803 and second protrusion 808. The first protrusion 803, the second protrusion 808 and the flange 807 form an inlet flow channel 801. The pump body 809, flange 807, spiral bar 802, first protrusion 803 and second protrusion 808 all include metal bodies. The inner wall of the pump body 809, the outer wall of the spiral bar 802, and the outer surfaces of the first protrusion 803 and second protrusion 808 are all provided with grooves 811. The engineering plastic layer 810 is wrapped around the inner wall of the pump body 809, the outer wall of the spiral bar 802, and the outer surfaces of the first protrusion 803 and second protrusion 808 through the grooves 811 to reduce the friction and wear between the rotor and the stator during operation and extend the service life of the spiral liquid pump. Liquid inlet channels 804 are provided between the first protrusion 803 and the second protrusion 808, and between two adjacent second protrusions 808. The inlet flow channel 801 is connected to the outlet hole 805 through the liquid inlet channel 804.

[0050] like Figures 1 to 6 As shown, this invention provides an injection mold for manufacturing a stator of a vortex pump. The injection mold includes a lower mold 1, a cover plate 2, an upper mold 3, and a primary injection housing 6. The lower mold 1 is used to limit the metal body. The lower mold 1 is provided with a placement cavity 101. The bottom surface of the placement cavity 101 is provided with a positioning post 104 and a retaining strip 105. The retaining strip 105 is distributed in a ring around the positioning post 104. The placement cavity 101 is used to place the stator. The positioning post 104 and the retaining strip 105 are respectively engaged in the bearing hole 806 and the liquid outlet hole 805 of the stator to achieve the positioning of the stator.

[0051] A flange groove 102 is provided on the top surface of the placement cavity 101, and a flange cover 202 is provided on the bottom surface of the cover plate 2. The flange cover 202 matches the flange groove 102, and an annular strip 203 is provided on the flange cover 202. The design of the flange groove 102 and the flange cover 202 facilitates the limiting of the stator and prevents it from moving during the injection molding process of the engineering plastic layer 810, which would affect the injection molding effect. The annular strip 203 is used to hold the liquid inlet channel 804 of the stator, thereby improving the injection molding quality and precision of the engineering plastic layer 810.

[0052] The cover plate 2 is connected to the lower mold 1 through the second fastening mechanism 5. The second fastening mechanism 5 includes a first ear plate 501, a second ear plate 502, and a second fastener 503. The first ear plate 501 is distributed in a ring on the outer circumferential side of the lower mold 1, and the second ear plate 502 is distributed in a ring on the outer circumferential side of the cover plate 2. The first ear plate 501 is connected to the second ear plate 502 through the second fastener 503, which facilitates the installation and disassembly of the cover plate 2 and the lower mold 1.

[0053] The cover plate 2 is provided with a through groove 205, and a positioning block 204 is fixed on the inner wall of the through groove 205. A first arc groove 206 and a second arc groove 207 are formed between two adjacent positioning blocks 204. The first arc groove 206 and the second arc groove 207 are both connected to the through groove 205. A limiting block 201 is provided on the bottom surface of the cover plate 2, and a limiting groove 103 is provided on the top surface of the lower mold 1. The limiting block 201 matches the limiting groove 103. By the limiting block 201 being inserted into the limiting groove 103, the quick positioning and assembly between the cover plate 2 and the lower mold 1 can be realized, improving the stability of the installation between the upper mold 3 and the lower mold 1, and improving the precision and quality of injection molding.

[0054] The upper mold 3 is confined within the through groove 205. The upper mold 3 includes at least two interlocking injection molding units 301. This invention preferably uses four injection molding units 301, which can improve the demolding quality of the engineering plastic layer 810. The top surface of the injection molding unit 301 is provided with an injection tube 302 and a connector 303. The injection molding unit 301 is provided with a secondary scroll forming cavity. The primary injection molding shell 6 matches the secondary scroll forming cavity. The primary injection molding shell 6 is detachably connected to the injection molding unit 301 through the connector 303, which facilitates the installation and disassembly of the primary injection molding shell 6 and the injection molding unit 301.

[0055] The injection molding unit 301 is connected to the cover plate 2 via a first fastening mechanism 4 for secondary injection molding of the engineering plastic layer 810. The first fastening mechanism 4 includes a first mounting block 401, a second mounting block 402, and a first fastener 403. The first mounting block 401 is mounted on the injection molding unit 301, and the second mounting block 402 is mounted on the cover plate 2. The first mounting block 401 is connected to the second mounting block 402 via the first fastener 403, which allows for the installation and disassembly of the injection molding unit 301 and the cover plate 2, facilitating demolding. Both the first and second fasteners can be bolt and nut structures for easy installation and disassembly.

[0056] The primary injection molded housing 6 is fitted onto the upper mold 3 and abuts against the positioning block 204, for primary injection molding of the engineering plastic layer 810. The thickness of the primary injection molded housing 6 is 0.5–1 mm. The distance between the primary injection molded housing 6 and the metal body is 2–3 mm. The injection-molded housing 6 includes at least two injection molding units that are respectively matched with the injection molding unit 301. Each injection molding unit includes an integrally formed base plate 601, a first scroll forming plate 602, a second scroll forming plate 603, a first arc-shaped strip 604, and a second arc-shaped strip 605. The first scroll forming plate 602 and the second scroll forming plate 603 are both disposed on the base plate 601, with the first scroll forming plate 602 located inside the second scroll forming plate 603. The first arc-shaped strip 604 and the second arc-shaped strip 605 are respectively connected to the second scroll forming plate 603, and are respectively matched with the first arc-shaped groove 206 and the second arc-shaped groove 207. After two adjacent injection molding units are spliced ​​together, a retaining groove 608 is formed between adjacent first arc-shaped strips 604 and second arc-shaped strips 605, and between two adjacent second arc-shaped strips 605. The retaining groove 608 matches the positioning block 204.

[0057] Both the first arc-shaped strip 604 and the second arc-shaped strip 605 are provided with injection holes 606 and fixing blocks 607. The injection holes 606 are connected to the injection tube 302, and the fixing blocks 607 are connected to the connectors 303. The connectors can be screws. The interior of the first arc-shaped strip 604 is hollow. Two adjacent first arc-shaped strips 604 are spliced ​​to form a primary spiral forming cavity 7. The bottom plate 601 facilitates the injection molding of the engineering plastic layer 810 on the inner bottom of the stator. The first spiral forming plate 602 and the second spiral forming plate 603 facilitate the injection molding of the spiral strips 802 inside the stator and the engineering plastic layer 810 on the inner wall of the stator. The first arc-shaped strips 604 and the second arc-shaped strips 605 facilitate the injection molding of the engineering plastic layer 810 on the top surface of the first protrusion 803 and the second protrusion 808 inside the stator. Molten elastomer material can enter between the primary injection molding shell 6 and the metal body through the injection holes 606, which facilitates the primary injection molding of the engineering plastic layer 810.

[0058] Through the above structural design, not only can the engineering plastic layer 810 on the surface of the vortex pump stator be injection molded twice, but it is also less likely to cause the engineering plastic layer 810 to fall off, thereby improving the bonding strength and stability between the engineering plastic layer 810 and the metal body, which is beneficial to reducing the friction and wear between the rotor and the stator when the vortex pump is working.

[0059] In practical use, the invention first places the metal body into the placement cavity of the lower mold, ensuring the flange is confined within the flange groove. Then, the primary injection molding housing is fixedly connected to each injection molding unit via connectors. Next, the injection molding units are inserted into the through slots of the cover plate. The upper mold and cover plate are fixedly connected via a first fastening mechanism, and the cover plate is installed on top of the lower mold and fixed via a second fastening mechanism. Elastomer material at 400°C is poured into the injection tube until the first engineering plastic layer is formed. Once the first engineering plastic layer reaches the set... After reaching the set strength, the injection molding units are removed sequentially, and the primary injection shell on each injection molding unit is removed, followed by the removal of the cover plate. The injection molding units are then inserted into the through slots of the cover plate, and the upper mold and cover plate are fixedly connected using the first fastening mechanism. The cover plate is then installed on top of the lower mold and fixed using the second fastening mechanism. Elastomer material at 350℃ is poured into the injection tube until the second engineering plastic layer is formed. After the second engineering plastic layer reaches the set strength, the injection molding units are removed sequentially, followed by the cover plate, and the stator is removed. The elastomer material can be rubber, polyetheretherketone (PEEK), etc., preferably PEEK. This material is non-conductive, has good affinity, and will not damage the motor even if it wears down. It also allows for dry operation, as the refrigerant in the cooling system easily evaporates, producing gas that allows for dry operation, thus meeting the dry operation requirements.

[0060] 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 scroll liquid pump, the stator comprising a metal body and an engineering plastic layer, the scroll liquid pump stator structure comprising an integrally formed pump body, a flange, and scroll bars, the flange being disposed on the open side of the pump body, the scroll bars being fixed within the pump body, a bearing hole and a liquid outlet hole being provided at the center of the bottom of the pump body, the liquid outlet holes being distributed in a ring around the bearing hole; a first protrusion and a second protrusion are integrally formed within the pump body, the first protrusion, the second protrusion, and the flange forming an inlet flow channel, the pump body, the flange, the scroll bars, the first protrusion, and the second protrusion all comprising a metal body; a liquid inlet channel is provided between the first protrusion and the second protrusion, and between two adjacent second protrusions, the inlet flow channel communicating with the liquid outlet hole through the liquid inlet channel; characterized in that: The injection mold includes A mold is used to limit the metal body; A cover plate is connected to the lower mold via a second fastening mechanism. The cover plate has a through groove, and a positioning block is fixed to the inner wall of the through groove. A first arc-shaped groove and a second arc-shaped groove are formed between two adjacent positioning blocks. Both the first arc-shaped groove and the second arc-shaped groove are connected to the through groove. An upper mold is provided, which is located within the through groove. The upper mold includes at least two injection molding units that are spliced ​​together. The injection molding units are connected to the cover plate by a first fastening mechanism. A primary injection molding housing is fitted onto the upper mold and abuts against the positioning block for primary injection molding of the engineering plastic layer. The top surface of the injection molding unit is provided with an injection tube and a connector. The injection molding unit has a secondary scroll forming cavity, and the primary injection molding housing matches the secondary scroll forming cavity. The primary injection molding housing is detachably connected to the injection molding unit via the connector. The thickness of the primary injection molding housing is 0.5–1 mm. The primary injection molding housing includes at least two injection molding units, each matching the injection molding unit. The injection molding unit includes an integrally formed base plate, a first scroll forming plate, a second scroll forming plate, a first arc-shaped strip, and a second arc-shaped strip. Both the first and second scroll forming plates are disposed on the base plate, with the first scroll forming plate located inside the second scroll forming plate. The first and second arc-shaped strips are respectively connected to the second scroll forming plate and respectively match the first and second arc-shaped grooves. Both the first and second arc-shaped strips are provided with injection holes and fixing blocks. The hole connects to the injection tube, the fixing block is connected to the connector, the interior of the first arc-shaped strip is hollow, and two adjacent first arc-shaped strips are spliced ​​to form a one-time spiral forming cavity; the lower mold is provided with a placement cavity, the bottom surface of the placement cavity is provided with positioning posts and locking strips, the locking strips are distributed in a ring around the positioning posts, and are respectively inserted into the bearing holes and liquid outlet holes of the stator to achieve the positioning of the stator; the top surface of the placement cavity is provided with a flange groove, the bottom surface of the cover plate is provided with a flange cover, the flange cover matches the flange groove, and the method The cover is provided with an annular strip, which is used to abut the liquid inlet channel of the stator; the bottom plate facilitates the injection molding of the engineering plastic layer on the inner bottom of the stator; the first scroll forming plate and the second scroll forming plate facilitate the injection molding of the scroll strip inside the stator and the engineering plastic layer on the inner wall of the stator; the first arc strip and the second arc strip facilitate the injection molding of the engineering plastic layer on the top surface of the first convex strip and the second convex strip inside the stator; after the first injection molding, the first injection molding shell is removed, and the lower mold, cover plate and upper mold are assembled to realize the second injection molding.

2. The injection mold for manufacturing a vortex pump stator according to claim 1, characterized in that: The distance between the primary injection molded housing and the metal body is 2-3 mm.

3. The injection mold for manufacturing a vortex pump stator according to claim 1, characterized in that: The second fastening mechanism includes a first ear plate, a second ear plate, and a second fastener. The first ear plate is distributed in a ring on the outer circumferential side of the lower mold, and the second ear plate is distributed in a ring on the outer circumferential side of the cover plate. The first ear plate is connected to the second ear plate by the second fastener.

4. The injection mold for manufacturing a vortex pump stator according to claim 1, characterized in that: The bottom surface of the cover plate is provided with a limiting block, and the top surface of the lower mold is provided with a limiting groove. The limiting block matches the limiting groove.

5. The injection mold for manufacturing a vortex pump stator according to claim 1, characterized in that: The first fastening mechanism includes a first mounting block, a second mounting block, and a first fastener. The first mounting block is disposed on the injection-molded unit, and the second mounting block is disposed on the cover plate. The first mounting block is connected to the second mounting block through the first fastener.

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