An injection mold for manufacturing a vortex pump rotor

Abstract

The application discloses a kind of injection mould for scroll liquid pump rotor production, including lower mould, and lower mould is connected with positioning ring by first fastener;One upper mould, the upper mould is connected in the positioning ring, and the upper mould includes at least two spliced monomers, and the spliced monomers are connected by second fastener, and the spliced monomers are cooperated to form positioning hole and secondary injection cavity;And primary injection shell, the primary injection shell is embedded in secondary injection cavity, and the primary injection shell is provided with primary injection cavity, and the primary injection shell is connected to the upper mould by fixed mechanism.The application not only can realize the secondary injection molding of elastomer material on the surface of rotor, but also is not easy to cause to fall off, improve the adhesion strength and stability of elastomer material and metal body on rotor, prolong the service life of rotor, and can further improve the stability and reliability of the whole system operation.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to an injection mold for producing a vortex liquid pump rotor. 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 vortex pump rotor can not only reduce rotor wear but also prevent metal powder from falling and burning out the motor. However, current engineering plastic layers are prone to peeling off, affecting the normal operation of the vortex pump. Summary of the Invention

[0006] The purpose of this invention is to provide a technical solution for injection molds used in the production of vortex pump rotors, addressing the shortcomings of existing technologies. This solution not only enables secondary injection molding of the elastomeric material on the rotor surface but also prevents it from falling off, improving the adhesion strength and stability between the elastomeric material and the metal body on the rotor, extending the rotor's service life, and further enhancing the stability and reliability of the entire system. The injection mold is also easy and quick to install and disassemble.

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

[0008] An injection mold for producing a vortex liquid pump rotor, characterized in that it includes:

[0009] The lower mold is connected to a positioning ring via a first fastener.

[0010] The upper mold is connected to the positioning ring. The upper mold includes at least two splicing units, which are connected by a second fastener. The splicing units cooperate to form a positioning hole and a secondary injection cavity.

[0011] The primary injection molded housing is embedded within a secondary injection cavity, which is connected to the upper mold via a fixing mechanism. This structural design not only enables secondary injection molding of the elastomeric material on the rotor surface but also reduces the likelihood of detachment, improving the adhesion strength and stability between the elastomeric material and the metal body of the rotor, extending the rotor's service life, and further enhancing the overall system's stability and reliability.

[0012] Furthermore, the injection-molded housing includes at least two injection-molded units. Each injection-molded unit includes a base plate that fits into the bottom of the upper mold and two arc-shaped first and second scroll forming covers. The first scroll forming cover, the second scroll forming cover and the base plate are integrally formed. The design of the first scroll forming cover, the second scroll forming cover and the base plate facilitates the formation of an engineering plastic layer on the surface of the rotor, thereby improving the quality of injection molding.

[0013] Furthermore, both the top of the first and second spiral forming covers are provided with injection holes, and the splicing unit is provided with an injection tube that connects to the injection holes. The injection tube can not only perform one-time injection molding of molten elastomer material through the injection holes, but also perform secondary injection molding after the first and second spiral forming covers are removed, thereby improving the processing quality of the engineering plastic layer.

[0014] Furthermore, the injection-molded units are spliced ​​together to form limiting holes. The limiting holes and positioning holes are concentric circles. The distance between the limiting holes and positioning holes is H, where 2mm < H < 4mm. This distance design not only facilitates the injection molding of the engineering plastic layer, but also makes it less likely to fall off, improves the adhesion strength of the engineering plastic layer, and further extends the service life of the rotor.

[0015] Furthermore, the fixing mechanism includes a locking block and a locking groove. An arc-shaped strip is provided on the outer circumferential side of the base plate, which matches the inner wall of the placement cavity of the lower mold. The locking block is located on the outer circumferential side of the arc-shaped strip, and the top surface of the locking block is higher than the top surface of the base plate. The locking groove is distributed in a ring at the bottom of the upper mold, and the locking block matches the locking groove. The locking block is connected to the upper mold by fastening screws. The design of the arc-shaped strip facilitates the edge forming of the engineering plastic layer, improving the injection molding quality. The locking block and locking groove facilitate the connection of the primary injection molding shell to the upper mold, improving the installation stability between the primary injection molding shell and the upper mold, and further improving the injection molding quality.

[0016] Furthermore, a limiting block is provided at the bottom of the placement cavity, and a limiting groove is formed between the limiting block and the placement cavity to place the rotor, thereby improving the stability and reliability of rotor placement and preventing shaking during injection molding.

[0017] Furthermore, both the secondary injection cavity and the primary injection cavity have an Archimedean spiral structure.

[0018] Furthermore, the upper mold is connected to the lower mold through a positioning mechanism. The positioning mechanism includes a protrusion and a groove. The protrusion is distributed in a ring along the bottom edge of the upper mold, and the groove is distributed in a ring along the top edge of the lower mold. The protrusion and the groove match. The design of the protrusion and the groove facilitates the installation and positioning of the upper mold, and further improves the assembly accuracy between the upper mold and the positioning ring.

[0019] Furthermore, the first fastener includes a first ear plate, a second ear plate, and a first bolt. The first ear plate is evenly distributed along the outer circumferential side of the positioning ring, and the second ear plate is evenly distributed along the outer circumferential side of the lower mold. The first ear plate is connected to the second ear plate by the first bolt. The above structure can improve the connection stability and reliability between the positioning ring and the lower mold, and facilitate the positioning and installation of the upper mold.

[0020] Furthermore, the second fastener includes a third ear plate and a second bolt. The third ear plate is located on the top surface of the splicing unit, and the third ear plates between two adjacent splicing units are connected by the second bolt, which facilitates the fixed connection of two adjacent splicing units.

[0021] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0022] 1. This invention not only enables secondary injection molding of the elastomeric material on the rotor surface, but also prevents it from falling off, improving the bonding strength and stability between the elastomeric material and the metal body on the rotor, extending the service life of the rotor, and further improving the stability and reliability of the entire system operation.

[0023] 2. The design of the first spiral forming cover, the second spiral forming cover and the base plate facilitates the formation of an engineering plastic layer on the surface of the rotor, thereby improving the quality of injection molding.

[0024] 3. The injection tube can not only perform one-time injection molding of molten elastomer material through the injection hole, but also perform secondary injection molding after removing the first and second spiral forming covers, thereby improving the processing quality of the engineering plastic layer.

[0025] 4. The arc-shaped design facilitates edge forming of the engineering plastic layer, improving injection molding quality. The locking blocks and slots facilitate the connection of the primary injection molding shell to the upper mold, improving the installation stability between the primary injection molding shell and the upper mold, and further enhancing injection molding quality. Attached image description:

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a rendering of an injection mold for producing a vortex liquid pump rotor according to the present invention;

[0028] Figure 2 This is a schematic diagram showing the connection between the primary injection molded housing and the upper mold in this invention;

[0029] Figure 3 This is a schematic diagram of the upper mold in this invention;

[0030] Figure 4 This is a schematic diagram of the structure of the primary injection molded housing in this invention;

[0031] Figure 5 for Figure 4 Schematic diagram of the structure in direction A;

[0032] Figure 6 This is a rendering of the lower mold in this invention;

[0033] Figure 7 This is a rendering of the rotor in this invention;

[0034] Figure 8 for Figure 7 Rendering of the B direction;

[0035] Figure 9 This is a cross-sectional view of the rotor in this invention.

[0036] In the diagram: 1-Upper mold; 101-Positioning hole; 102-Secondary injection cavity; 103-Bump; 104-Threaded hole; 105-Slot; 106-Assembly unit;

[0037] 2-Lower mold; 201-Placement cavity; 202-Limiting block; 203-Limiting groove; 204-Groove;

[0038] 3-Injection molded tubing;

[0039] 4-First fastener; 401-First ear plate; 402-Second ear plate; 403-First bolt;

[0040] 5- Primary injection molded housing; 501- Injection molded unit; 502- Base plate; 503- First spiral strip forming cover; 504- Second spiral strip forming cover; 505- Injection hole; 506- Limiting hole; 507- Arc strip; 508- Locking block; 509- Primary injection cavity;

[0041] 6-Rotor; 601-Turntable; 602-Scroll bar; 603-Sleeve; 604-Stop; 605-Drainage hole; 610-Bearing hole; 612-Metal body; 613-Engineering plastic layer; 614-Groove;

[0042] 7-Second fastener; 701-Third ear plate; 702-Second bolt;

[0043] 8-Locking ring; 9-Fasting screw. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] like Figures 1 to 6 As shown, this invention provides an injection mold for producing a vortex pump rotor, comprising a lower mold 2, an upper mold 1, and a primary injection housing 5. The lower mold 2 is connected to a positioning ring 8 via a first fastener 4. The first fastener 4 includes a first ear plate 401, a second ear plate 402, and a first bolt 403. The first ear plate 401 is evenly distributed along the outer circumferential side of the positioning ring 8, and the second ear plate 402 is evenly distributed along the outer circumferential side of the lower mold 2. The first ear plate 401 is connected to the second ear plate 402 via the first bolt 403. This structure improves the connection stability and reliability between the positioning ring 8 and the lower mold 2, and facilitates the positioning and installation of the upper mold 1. The upper mold 1 is connected to the lower mold 2 through a positioning mechanism. The positioning mechanism includes a protrusion 103 and a groove 204. The protrusion 103 is distributed in a ring along the bottom edge of the upper mold 1, and the groove 204 is distributed in a ring along the top edge of the lower mold 2. The protrusion 103 and the groove 204 are matched. The design of the protrusion 103 and the groove 204 facilitates the installation and positioning of the upper mold 1 and further improves the assembly accuracy between the upper mold 1 and the positioning ring 8.

[0048] The upper mold 1 is connected to the positioning ring 8. The upper mold 1 includes at least two splicing units 106. In this application, three splicing units 106 are preferred. The outer circumferential side of the splicing unit 106 is provided with a threaded hole 104. The fastening screw 9 passes through the positioning ring 8 and is connected to the threaded hole 104 to achieve the fixed assembly between the upper mold 1 and the positioning ring 8.

[0049] The splicing units 106 are connected by a second fastener 7, which includes a third ear plate 701 and a second bolt 702. The third ear plate 701 is located on the top surface of the splicing unit 106, and the third ear plates 701 between two adjacent splicing units 106 are connected by the second bolt 702, which facilitates the fixed connection of two adjacent splicing units 106.

[0050] The splicing units 106 cooperate to form a positioning hole 101 and a secondary injection cavity 102. The primary injection shell 5 is embedded in the secondary injection cavity 102. The primary injection shell 5 is provided with a primary injection cavity 509. The primary injection shell 5 includes at least two injection units 501. The present invention preferably uses three injection units 501. Each injection unit 501 includes a base plate 502 that fits the bottom of the upper mold 1 and two arc-shaped first scroll bar 602 forming covers 503 and second scroll bar 602 forming covers 504. The first scroll bar 602 forming covers 503, the second scroll bar 602 forming covers 504 and the base plate 502 are integrally formed. Through the design of the first scroll bar 602 forming covers 503, the second scroll bar 602 forming covers 504 and the base plate 502, it is convenient to form an engineering plastic layer 613 on the surface of the rotor 6, thereby improving the injection molding quality. The interiors of the first spiral molding cover 503 and the second spiral molding cover 504 are both hollow structures, and each has an interconnected opening slot on one side of the connection between two adjacent first spiral molding covers 503 and one side of the connection between two adjacent second spiral molding covers 504. Both the secondary injection cavity 102 and the primary injection cavity 509 have an Archimedean spiral structure.

[0051] The top of the first spiral bar 602 forming cover 503 and the second spiral bar 602 forming cover 504 are both provided with injection holes 505. The splicing unit 106 is provided with an injection tube 3, which is connected to the injection hole 505. The injection tube 3 can not only perform one injection molding of molten elastomer material through the injection hole 505, but also perform a second injection molding after the first spiral bar 602 forming cover 503 and the second spiral bar 602 forming cover 504 are removed, thereby improving the processing quality of the engineering plastic layer 613.

[0052] The injection molding units 501 are spliced ​​to form the limiting hole 506. The limiting hole 506 and the positioning hole 101 are concentric circles. The distance between the limiting hole 506 and the positioning hole 101 is H, 2mm < H < 4mm. This distance design not only facilitates the injection molding of the engineering plastic layer 613, but also makes it less likely to fall off, improves the bonding strength of the engineering plastic layer 613, and further extends the service life of the rotor 6.

[0053] The primary injection molded housing 5 is connected to the upper mold 1 via a fixing mechanism, which includes a locking block 508 and a locking groove 105. An arc-shaped strip 507 is provided on the outer circumferential side of the base plate 502. The arc-shaped strip 507 matches the inner wall of the placement cavity 201 of the lower mold 2. The locking block 508 is located on the outer circumferential side of the arc-shaped strip 507. The top surface of the locking block 508 is higher than the top surface of the base plate 502. The locking groove 105 is distributed in a ring at the bottom of the upper mold 1. The locking block 508 matches the locking groove 105. The locking block 508 is connected to the upper mold 1 by fastening screws 9. The design of the arc-shaped strip 507 facilitates the edge forming of the engineering plastic layer 613, improving the injection molding quality. The locking block 508 and the locking groove 105 facilitate the connection of the primary injection molded housing 5 to the upper mold 1, improving the installation stability between the primary injection molded housing 5 and the upper mold 1, and further improving the injection molding quality. The above structural design not only enables secondary injection molding of the elastomeric material on the surface of rotor 6, but also prevents it from falling off, improving the bonding strength and stability between the elastomeric material and the metal body 612 on rotor 6, extending the service life of rotor 6, and further improving the stability and reliability of the entire system operation.

[0054] A limiting block 202 is provided at the bottom of the placement cavity 201, and a limiting groove 203 is formed between the limiting block 202 and the placement cavity 201 for placing the rotor 6, thereby improving the stability and reliability of the rotor 6 placement and preventing shaking during the injection molding process.

[0055] The rotor injection molded by the present invention is as follows: Figures 7 to 9 As shown, the rotor 6 includes a turntable 601, a spiral bar 602 fixed on the same side of the turntable 601, and a sleeve 603. The sleeve 603 is located at the center of the turntable 601, and a stop block 604 is provided inside the sleeve 603. The turntable 601 is provided with a bearing hole 610.

[0056] The rotor 6 is provided with a drainage hole 605. The second annular groove is connected to the compression chamber through the drainage hole 605. The compression chamber is located near the high pressure area. The high pressure liquid can be drained into the second annular groove through the drainage hole 605, and the rotor 6 is balanced by the push mechanism.

[0057] The rotor 6 includes a metal body 612 and an engineering plastic layer 613. The metal body 612 has grooves 614 on the outer surface near the spiral bar 602 and on one side of the turntable 601. The engineering plastic layer 613 is connected to the metal body 612 through the grooves 614. The thickness of the engineering plastic layer 613 is 2-4mm. The metal body 612 is preferably made of aluminum alloy. At the same time, the engineering plastic layer 613 is not installed on the sleeve 603, which helps to improve the installation stability of the engineering plastic layer 613 and makes it less likely to fall off.

[0058] The engineering plastic layer 613 is made of an elastomer material, such as rubber or polyetheretherketone (PEEK), with polyetheretherketone (PEEK) being preferred. This material is non-conductive, has good affinity, and will not damage the motor even if it wears down. It can also run dry. In the cooling system, the refrigerant is easy to evaporate, and the evaporation produces gas, which will be present during dry operation, thus meeting the requirements for dry operation.

[0059] In practical use, this invention first processes the metal body, places it in the placement cavity of the lower mold for positioning, and then splices the individual units together using a second fastener to form the required upper mold. Simultaneously, a primary injection molded shell is installed within the secondary injection cavity formed by the splicing. The primary injection molded shell is then fixedly connected to the upper mold unit using a fixing mechanism. Next, a positioning ring is fixedly connected to the upper mold using fastening screws. The upper mold is placed on the top surface of the lower mold, and the positioning ring is fixed to the lower mold using a first fastener. Finally, a primary injection is performed through the injection tube to form the first layer of engineering plastic. After the first layer of engineering plastic reaches the set strength, the splicing units are removed sequentially, and the primary injection molded shell within the splicing units is also removed. The splicing units are then spliced ​​again and installed on the lower mold. A secondary injection is performed through the injection tube to form the second layer of engineering plastic. After the second layer of engineering plastic reaches the set strength, the upper mold is removed, and the rotor is taken out.

[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 producing a vortex hydraulic pump rotor, characterized in that: include The lower mold is connected to a positioning ring via a first fastener; An upper mold is connected to the positioning ring. The upper mold includes at least two splicing units, which are connected by a second fastener. The splicing units cooperate to form a positioning hole and a secondary injection cavity. The system comprises a primary injection molded housing, which is embedded within the secondary injection cavity. The primary injection molded housing contains the primary injection cavity and is connected to the upper mold via a fixing mechanism. The primary injection molded housing includes at least two injection molding units. Each injection molding unit includes a base plate that conforms to the bottom of the upper mold and two arc-shaped first and second spiral forming covers. The first and second spiral forming covers are integrally formed with the base plate. The fixing mechanism includes a locking block and a locking groove. An arc-shaped strip is provided on the outer circumferential side of the base plate, and the arc-shaped strip is aligned with the inner wall of the placement cavity of the lower mold. The matching mechanism includes a locking block located on the outer circumferential side of the arc-shaped strip, with its top surface higher than the top surface of the base plate. A locking groove is annularly distributed at the bottom of the upper mold, and the locking block matches the locking groove. The locking block is connected to the upper mold by fastening screws. A limiting block is provided at the bottom of the placement cavity, forming a limiting groove between the limiting block and the placement cavity for placing the rotor. The upper mold is connected to the lower mold via a positioning mechanism, which includes a protrusion and a groove. The protrusion is annularly distributed along the bottom edge of the upper mold, and the groove is annularly distributed along the top edge of the lower mold. The protrusion matches the groove.

2. The injection mold for producing a vortex hydraulic pump rotor according to claim 1, characterized in that: Both the first spiral forming cover and the second spiral forming cover are provided with injection holes at their tops, and the splicing unit is provided with an injection tube, which is connected to the injection hole.

3. The injection mold for producing a vortex hydraulic pump rotor according to claim 1, characterized in that: The injection-molded units are spliced ​​to form a limiting hole, and the limiting hole and the positioning hole are concentric circles. The distance between the limiting hole and the positioning hole is H, where 2mm < H < 4mm.

4. The injection mold for producing a vortex hydraulic pump rotor according to claim 1, characterized in that: Both the secondary injection cavity and the primary injection cavity have an Archimedean spiral structure.

5. The injection mold for producing a vortex hydraulic pump rotor according to claim 1, characterized in that: The first fastener includes a first ear plate, a second ear plate, and a first bolt. The first ear plate is evenly distributed along the outer circumferential side of the positioning ring, and the second ear plate is evenly distributed along the outer circumferential side of the lower mold. The first ear plate is connected to the second ear plate by the first bolt.

6. The injection mold for producing a vortex hydraulic pump rotor according to claim 1, characterized in that: The second fastener includes a third ear plate and a second bolt. The third ear plate is disposed on the top surface of the splicing unit, and the third ear plates between two adjacent splicing units are connected by the second bolt.

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