CN117774236A - Injection mold for scroll liquid pump rotor production - Google Patents

Injection mold for scroll liquid pump rotor production Download PDF

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Publication number
CN117774236A
CN117774236A CN202311684238.6A CN202311684238A CN117774236A CN 117774236 A CN117774236 A CN 117774236A CN 202311684238 A CN202311684238 A CN 202311684238A CN 117774236 A CN117774236 A CN 117774236A
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CN
China
Prior art keywords
injection molding
scroll
liquid pump
pump rotor
injection mold
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Pending
Application number
CN202311684238.6A
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Chinese (zh)
Inventor
许静
周凤翔
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Hangzhou University Of Electronic Science And Technology Tiantai Digital Industry Research Institute Co ltd
Hangzhou Dianzi University
Original Assignee
Hangzhou University Of Electronic Science And Technology Tiantai Digital Industry Research Institute Co ltd
Hangzhou Dianzi University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Hangzhou University Of Electronic Science And Technology Tiantai Digital Industry Research Institute Co ltd, Hangzhou Dianzi University filed Critical Hangzhou University Of Electronic Science And Technology Tiantai Digital Industry Research Institute Co ltd
Priority to CN202311684238.6A priority Critical patent/CN117774236A/en
Publication of CN117774236A publication Critical patent/CN117774236A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an injection mold for producing a scroll liquid pump rotor, which comprises a lower mold, wherein the lower mold is connected with a positioning ring through a first fastener; the upper die is connected in the positioning ring and comprises at least two splicing monomers, the splicing monomers are connected through a second fastener, and a positioning hole and a secondary injection cavity are formed by matching the splicing monomers; and the primary injection molding shell is embedded in the secondary injection molding cavity, a primary injection molding cavity is arranged in the primary injection molding shell, and the primary injection molding shell is connected to the upper die through the fixing mechanism. The invention not only can realize the secondary injection molding of the elastomer material on the surface of the rotor, but also is not easy to fall off, improves the adhesive strength and stability of the elastomer material and the metal body on the rotor, prolongs the service life of the rotor, and can further improve the running stability and reliability of the whole system.

Description

Injection mold for scroll liquid pump rotor production
Technical Field
The invention relates to the technical field of molds, in particular to an injection mold for producing a scroll liquid pump rotor.
Background
Data centers are burdened with increasingly complex task processing, with increasing application loads putting unlimited stress on the data centers, and conventional data centers include a plurality of individual computing resources contained within a shell structure. Data centers or other physical spaces benefit from a sufficient and optimized power and cooling infrastructure. Maintaining the data center at a desired temperature helps prevent computer hardware (e.g., IT infrastructure) from overheating and failing. For this reason, many data centers are cooled to relatively low temperatures to improve equipment reliability and service life, and to avoid downtime for repair and/or replacement.
The data center cooling system acts as a heat dissipation pressure which is difficult to release by the data center, and the cooling tower uses water as a circulating coolant to reduce the temperature of the data center. The data center may be cooled by a cooling tower and the waste heat is vented to the atmosphere.
In the field of refrigerant conveying, a volumetric pump, a rotor pump or a centrifugal pump is adopted for refrigerant conveying, metal powder can fall down due to abrasion during operation, a motor is burnt out, and meanwhile, a conventional pump needs to be provided with lubricating oil or a lubricating agent during operation, so that abrasion of the pump is reduced.
By adding the engineering plastic layer on the outer side surface of the scroll liquid pump rotor, not only the abrasion of the rotor can be reduced, but also the motor burning caused by the falling of metal powder can be prevented. However, the existing engineering plastic layer is easy to fall off, which affects the normal operation of the scroll liquid pump.
Disclosure of Invention
The invention aims to provide the technical scheme of the injection mold for producing the scroll liquid pump rotor, which aims at overcoming the defects of the prior art, not only can realize the secondary injection molding of the elastomer material on the rotor surface, but also is not easy to cause falling off, improves the adhesive strength and stability of the elastomer material and a metal body on the rotor, prolongs the service life of the rotor, and can further improve the running stability and reliability of the whole system.
In order to solve the technical problems, the invention adopts the following technical scheme:
an injection mold for scroll liquid pump rotor production, which is characterized in that: comprising
The lower die is connected with a positioning ring through a first fastener;
the upper die is connected in the positioning ring and comprises at least two splicing monomers, the splicing monomers are connected through a second fastener, and a positioning hole and a secondary injection cavity are formed by matching the splicing monomers;
and the primary injection molding shell is embedded in the secondary injection molding cavity, a primary injection molding cavity is arranged in the primary injection molding shell, and the primary injection molding shell is connected to the upper die through the fixing mechanism. Through the design of above-mentioned structure, not only can realize the elastomer material secondary injection moulding on rotor surface, be difficult to cause moreover and drop, improve elastomer material and the metal body adhesive strength and the stability on the rotor, prolong the life of rotor, can further improve the stability and the reliability of overall system operation simultaneously.
Further, the shell of moulding plastics once includes two at least monomer of moulding plastics, and every monomer of moulding plastics all includes one laminating in the bottom plate of last mould bottom and two first scroll strip shaping covers and the second scroll strip shaping covers that are arc structure, and first scroll strip shaping cover, second scroll strip shaping cover and bottom plate integrated into one piece are through the design of first scroll strip shaping cover, second scroll strip shaping cover and bottom plate, are convenient for form engineering plastic layer at the surface of rotor, improve the quality of moulding plastics.
Further, the top of first scroll strip shaping cover and second scroll strip shaping cover all is equipped with the hole of moulding plastics, and the concatenation monomer is equipped with the pipe of moulding plastics, and the pipe intercommunication hole of moulding plastics not only can carry out primary injection moulding through the hole of moulding plastics with molten elastomer material through the pipe of moulding plastics, can carry out secondary injection moulding after demolising first scroll strip shaping cover and second scroll strip shaping cover moreover, improves engineering plastic layer's processingquality.
Further, the monomer concatenation of moulding plastics forms spacing hole, and spacing hole and locating hole each other are concentric circles, and spacing hole and locating hole between are H, and 2mm < H < 4mm, and the design of this interval is convenient for the processing of moulding plastics of engineering plastic layer not only, is difficult for droing moreover, improves engineering plastic layer's adhesive strength, further prolongs rotor's life.
Further, fixed establishment includes fixture block and draw-in groove, be equipped with the arc strip on the outer circumference side of bottom plate, the arc strip is with the placement chamber inner wall assorted of bed die, the fixture block is located on the outer circumference side of arc strip, the top surface of fixture block is higher than the top surface of bottom plate, the draw-in groove is annular bottom that distributes in last mould, fixture block and draw-in groove assorted, the fixture block passes through fastening screw to be connected in last mould, through the design of arc strip, the edge shaping of engineering plastic layer of being convenient for, the improvement quality of moulding plastics, fixture block and draw-in groove are convenient for once mould plastics the casing and are connected in last mould, the improvement is once moulded plastics the installation stability between casing and the last mould, further improve the quality of moulding plastics.
Further, the bottom of placing the chamber is provided with the stopper, forms the spacing groove between stopper and the placing chamber for place the rotor, improve stability and the reliability that the rotor was placed, prevent to take place to rock at the in-process of moulding plastics.
Further, the secondary injection molding cavity and the primary injection molding cavity are both in Archimedes spiral structures.
Further, go up the mould and pass through positioning mechanism and connect in the bed die, positioning mechanism includes lug and recess, and the lug is annular along the bottom surface edge of last mould and distributes, and the recess is annular along the top surface edge of bed die and distributes, lug and recess assorted, through the design of lug and recess, the installation location of last mould of being convenient for further improves the assembly precision between last mould and the holding ring.
Further, the first fastener includes first otic placode, second otic placode and first bolt, and first otic placode is along the outer circumference side evenly distributed of holding ring, and second otic placode is along the outer circumference side evenly distributed of bed die, and first otic placode passes through first bolted connection second otic placode, can improve connection stability and reliability between holding ring and the bed die through above-mentioned structure, is convenient for fix a position the installation to last mould.
Further, the second fastener includes third otic placode and second bolt, and on the free top surface of concatenation was located to the third otic placode, the third otic placode between two adjacent concatenation monomers was passed through second bolted connection, was convenient for carry out fixed connection with two adjacent concatenation monomers.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the invention not only can realize the secondary injection molding of the elastomer material on the surface of the rotor, but also is not easy to fall off, improves the adhesive strength and stability of the elastomer material and the metal body on the rotor, prolongs the service life of the rotor, and can further improve the running stability and reliability of the whole system.
2. Through the design of first scroll strip shaping cover, second scroll strip shaping cover and bottom plate, be convenient for form engineering plastic layer on the surface of rotor, improve the quality of moulding plastics.
3. Through the injection molding pipe, not only can the molten elastomer material carry out primary injection molding through the injection molding hole, but also can carry out secondary injection molding after removing first scroll strip forming cover and second scroll strip forming cover, improve the processingquality of engineering plastic layer.
4. Through the design of arc strip, the edge shaping of engineering plastic layer of being convenient for improves the quality of moulding plastics, and fixture block and draw-in groove are convenient for once mould plastics the casing and are connected in last mould, improve the installation stability between casing and the last mould of once moulding plastics, further improve the quality of moulding plastics.
Description of the drawings:
the invention is further described below with reference to the accompanying drawings:
FIG. 1 is an effect diagram of an injection mold for producing a scroll liquid pump rotor according to the present invention;
FIG. 2 is a schematic diagram of the connection between the primary injection molded housing and the upper mold in the present invention;
FIG. 3 is a schematic view of the upper die structure in the present invention;
FIG. 4 is a schematic view of a primary injection molded housing according to the present invention;
FIG. 5 is a schematic view of the structure of the direction A in FIG. 4;
FIG. 6 is an effect diagram of the lower die of the present invention;
FIG. 7 is an effect diagram of the rotor of the present invention;
FIG. 8 is an effect diagram of the direction B in FIG. 7;
fig. 9 is a cross-sectional view of a rotor in accordance with the present invention.
In the figure: 1-upper die; 101-positioning holes; 102-a secondary injection molding cavity; 103-bump; 104-a threaded hole; 105-clamping grooves; 106-splicing the monomers;
2-lower die; 201-placing a cavity; 202-limiting blocks; 203-a limit groove; 204-grooves;
3-injection molding a tube;
4-a first fastener; 401-a first ear plate; 402-a second ear plate; 403-first bolt;
5-primary injection molding of the shell; 501-an injection molding monomer; 502-a bottom plate; 503-a first scroll bar forming cover; 504-a second scroll bar forming cover; 505-injection molding holes; 506-limiting holes; 507-arc bars; 508-clamping blocks; 509-a primary injection molding cavity;
6-rotor; 601-a turntable; 602-scroll bar; 603-a sleeve; 604-stop; 605-drainage holes; 610-bearing holes; 612-a metal body; 613-an engineering plastic layer; 614-grooves;
7-a second fastener; 701-a third ear plate; 702-a second bolt;
8-positioning rings; 9-tightening the screw.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, shall fall within the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
As shown in fig. 1 to 6, the injection mold for producing a scroll liquid pump rotor according to the present invention comprises a lower mold 2, an upper mold 1 and a primary injection molding housing 5, wherein the lower mold 2 is connected with a positioning ring 8 through a first fastening member 4, the first fastening member 4 comprises a first lug plate 401, a second lug plate 402 and a first bolt 403, the first lug plate 401 is uniformly distributed along the outer circumferential side surface of the positioning ring 8, the second lug plate 402 is uniformly distributed along the outer circumferential side surface of the lower mold 2, the first lug plate 401 is connected with the second lug plate 402 through the first bolt 403, and the connection stability and reliability between the positioning ring 8 and the lower mold 2 can be improved through the above structure, so that the positioning installation of the upper mold 1 is facilitated. The upper die 1 is connected to the lower die 2 through a positioning mechanism, the positioning mechanism comprises a protruding block 103 and a groove 204, the protruding block 103 is annularly distributed along the bottom surface edge of the upper die 1, the groove 204 is annularly distributed along the top surface edge of the lower die 2, the protruding block 103 is matched with the groove 204, the upper die 1 is conveniently installed and positioned through the design of the protruding block 103 and the groove 204, and the assembly precision between the upper die 1 and the positioning ring 8 is further improved.
The upper die 1 is connected in the locating ring 8, and the upper die 1 comprises at least two splicing monomers 106, and the application preferably adopts three splicing monomers 106, and the outer circumferential side surface of each splicing monomer 106 is provided with a threaded hole 104, and the upper die 1 and the locating ring 8 are fixedly assembled by penetrating through the locating ring 8 through the fastening screw 9 and connecting the threaded hole 104.
The splice monomers 106 are connected through the second fastening piece 7, the second fastening piece 7 comprises a third lug plate 701 and a second bolt 702, the third lug plate 701 is arranged on the top surface of the splice monomers 106, and the third lug plates 701 between two adjacent splice monomers 106 are connected through the second bolt 702, so that the two adjacent splice monomers 106 can be fixedly connected.
The positioning holes 101 and the secondary injection molding cavity 102 are formed between the splicing monomers 106 in a matched mode, the primary injection molding shell 5 is embedded in the secondary injection molding cavity 102, the primary injection molding cavity 509 is arranged in the primary injection molding shell 5, the primary injection molding shell 5 comprises at least two injection molding monomers 501, the three injection molding monomers 501 are preferably adopted in the invention, each injection molding monomer 501 comprises a bottom plate 502 attached to the bottom of the upper die 1, two first scroll bar 602 forming covers 503 and two second scroll bar 602 forming covers 504 which are of arc structures, the first scroll bar 602 forming covers 503, the second scroll bar 602 forming covers 504 and the bottom plate 502 are integrally formed, and engineering plastic layers 613 are conveniently formed on the surface of the rotor 6 and the injection molding quality is improved through the design of the first scroll bar 602 forming covers 503, the second scroll bar 602 forming covers 504 and the bottom plate 502. The first scroll bar 602 forming cover 503 and the second scroll bar 602 forming cover 504 are hollow structures, and open slots which are mutually communicated are arranged on one side of the connecting position of two adjacent first scroll bar 602 forming covers 503 and one side of the connecting position of two adjacent second scroll bar 602 forming covers 504. Both the secondary injection molding cavity 102 and the primary injection molding cavity 509 are in an archimedes spiral structure.
The top of first scroll strip 602 shaping cover 503 and second scroll strip 602 shaping cover 504 all is equipped with injection hole 505, and concatenation monomer 106 is equipped with injection pipe 3, and injection pipe 3 intercommunication injection hole 505 not only can carry out injection moulding through injection pipe 3 with the molten elastomer material through injection hole 505, can carry out secondary injection moulding after demolishing first scroll strip 602 shaping cover 503 and second scroll strip 602 shaping cover 504 moreover, improves the processingquality of engineering plastic layer 613.
The injection molding monomers 501 are spliced to form the limiting holes 506, the limiting holes 506 and the positioning holes 101 are concentric circles, the spacing between the limiting holes 506 and the positioning holes 101 is H,2mm is less than H and less than 4mm, the design of the spacing is not only convenient for the injection molding processing of the engineering plastic layer 613, but also is not easy to fall off, the adhesive strength of the engineering plastic layer 613 is improved, and the service life of the rotor 6 is further prolonged.
The shell 5 of once moulding plastics passes through fixed establishment to be connected in last mould 1, fixed establishment includes fixture block 508 and draw-in groove 105, be equipped with arc strip 507 on the outer circumference side of bottom plate 502, arc strip 507 and the cavity 201 inner wall assorted of placing of bed die 2, fixture block 508 is located on the outer circumference side of arc strip 507, the top surface of fixture block 508 is higher than the top surface of bottom plate 502, draw-in groove 105 is the annular and distributes in the bottom of last mould 1, fixture block 508 and draw-in groove 105 assorted, fixture block 508 passes through fastening screw 9 to be connected in last mould 1, through the design of arc strip 507, the edge shaping of engineering 613 of being convenient for improves the quality of moulding plastics, fixture block 508 and draw-in groove 105 are convenient for once mould plastics shell 5 and are connected in last mould 1, improve the installation stability between shell 5 and the last mould 1 of moulding plastics, further improve the quality of moulding plastics. Through the design of the structure, the secondary injection molding of the elastomer material on the surface of the rotor 6 can be realized, the falling off is not easy to occur, the bonding strength and stability of the elastomer material and the metal body 612 on the rotor 6 are improved, the service life of the rotor 6 is prolonged, and meanwhile, the running stability and reliability of the whole system can be further improved.
The bottom of placing the chamber 201 is provided with stopper 202, forms spacing groove 203 between stopper 202 and the chamber 201 of placing for place rotor 6, improve stability and the reliability that rotor 6 placed, prevent to take place to rock at the in-process of moulding plastics.
As shown in fig. 7 to 9, the rotor 6 of the injection molding mold of the present invention comprises a turntable 601, scroll bars 602 fixed on the same side of the turntable 601, and a sleeve 603, wherein the sleeve 603 is arranged at the center of the turntable 601, and a stop block 604 is arranged in the sleeve 603. The turntable 601 is provided with a bearing hole 610.
The rotor 6 is provided with a drainage hole 605, the second annular groove is communicated with a compression cavity through the drainage hole 605, the compression cavity is close to the high-pressure area, high-pressure liquid can be drained into the second annular groove through the drainage hole 605, and the thrust mechanism is matched to realize stress balance of the rotor 6.
The rotor 6 includes metal body 612 and engineering plastic layer 613, and the metal body 612 is close to the surface of scroll strip 602 and one side of carousel 601 is equipped with slot 614, and engineering plastic layer 613 passes through slot 614 to be connected in metal body 612, and engineering plastic layer 613's thickness is 2 ~ 4mm, and metal body 612 prefers the aluminium alloy, does not install engineering plastic layer 613613 on the sleeve 603 simultaneously, is favorable to improving engineering plastic layer 613's installation stability, is difficult for droing.
The engineering plastic layer 613 is made of an elastomer material, and the elastomer material can be selected from rubber, polyether-ether-ketone (peek) and the like, preferably polyether-ether-ketone (peek), and is non-conductive, good in affinity, free from damage to the motor even if worn, capable of running dry, and capable of meeting the requirement of running dry due to the fact that the refrigerant in the cooling system is easy to volatilize and volatilize to generate gas.
When the novel plastic injection molding machine is in actual use, firstly, a metal body is processed, the metal body is placed in a placing cavity of a lower die to limit, then a splicing monomer is spliced through a second fastener to form a required upper die, meanwhile, a primary injection molding shell is installed in a secondary injection molding cavity formed by splicing, the primary injection molding shell is fixedly connected with the upper die monomer through a fixing mechanism, then a positioning ring is fixedly connected with the upper die through a fastening screw, the upper die is placed on the top surface of the lower die, the positioning ring is fixed with the lower die through the first fastener, finally, primary casting is performed through an injection molding pipe to form a first engineering plastic layer, after the first engineering plastic layer reaches a set strength, the splicing monomer is sequentially taken down, meanwhile, the primary injection molding shell in the splicing monomer is removed, the splicing monomer is spliced and then is installed on the lower die, secondary casting is performed through an injection molding pipe to form a second engineering plastic layer, and after the second engineering plastic layer reaches the set strength, the upper die is removed, and the rotor is taken out.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to achieve substantially the same technical effects are included in the scope of the present invention.

Claims (10)

1. An injection mold for scroll liquid pump rotor production, which is characterized in that: comprising
The lower die is connected with a positioning ring through a first fastener;
the upper die is connected in the positioning ring and comprises at least two splicing monomers, the splicing monomers are connected through a second fastener, and a positioning hole and a secondary injection cavity are formed between the splicing monomers in a matching mode;
the primary injection molding shell is embedded in the secondary injection molding cavity, a primary injection molding cavity is arranged in the primary injection molding shell, and the primary injection molding shell is connected with the upper die through a fixing mechanism.
2. The injection mold for producing a scroll liquid pump rotor according to claim 1, wherein: the one-time injection molding shell comprises at least two injection molding monomers, each injection molding monomer comprises a bottom plate attached to the bottom of the upper die and two first scroll bar forming covers and second scroll bar forming covers which are arc-shaped structures, and the first scroll bar forming covers, the second scroll bar forming covers and the bottom plate are integrally formed.
3. The injection mold for producing a scroll liquid pump rotor according to claim 2, wherein: the top of first scroll strip shaping cover with the top of second scroll strip shaping cover all is equipped with the hole of moulding plastics, the concatenation monomer is equipped with the pipe of moulding plastics, the pipe of moulding plastics intercommunication the hole of moulding plastics.
4. The injection mold for producing a scroll liquid pump rotor according to claim 2, wherein: the injection molding monomers are spliced to form limiting holes, the limiting holes and the positioning holes are concentric circles, and the spacing between the limiting holes and the positioning holes is H, wherein H is more than 2mm and less than 4mm.
5. The injection mold for producing a scroll liquid pump rotor according to claim 2, wherein: the fixing mechanism comprises a clamping block and a clamping groove, wherein an arc-shaped strip is arranged on the outer circumferential side surface of the bottom plate, the arc-shaped strip is matched with the inner wall of the placement cavity of the lower die, the clamping block is arranged on the outer circumferential side surface of the arc-shaped strip, the top surface of the clamping block is higher than the top surface of the bottom plate, the clamping groove is annularly distributed at the bottom of the upper die, the clamping block is matched with the clamping groove, and the clamping block is connected to the upper die through a fastening screw.
6. The injection mold for producing a scroll liquid pump rotor according to claim 5, wherein: the bottom of placing the chamber is provided with the stopper, the stopper with place and form the spacing groove between the chamber for place the rotor.
7. The injection mold for producing a scroll liquid pump rotor according to claim 1, wherein: the secondary injection molding cavity and the primary injection molding cavity are of Archimedes spiral structures.
8. The injection mold for producing a scroll liquid pump rotor according to claim 1, wherein: the upper die is connected to the lower die through a positioning mechanism, the positioning mechanism comprises a lug and a groove, the lug is distributed in an annular mode along the edge of the bottom surface of the upper die, the groove is distributed in an annular mode along the edge of the top surface of the lower die, and the lug is matched with the groove.
9. The injection mold for producing a scroll liquid pump rotor according to claim 1, wherein: the first fastener comprises a first lug plate, a second lug plate and a first bolt, wherein the first lug plate is uniformly distributed along the outer circumferential side surface of the positioning ring, the second lug plate is uniformly distributed along the outer circumferential side surface of the lower die, and the first lug plate is connected with the second lug plate through the first bolt.
10. The injection mold for producing a scroll liquid pump rotor according to claim 1, wherein: the second fastening piece comprises a third lug plate and a second bolt, wherein the third lug plate is arranged on the top surface of each splicing monomer, and the third lug plates between two adjacent splicing monomers are connected through the second bolt.
CN202311684238.6A 2023-12-07 2023-12-07 Injection mold for scroll liquid pump rotor production Pending CN117774236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311684238.6A CN117774236A (en) 2023-12-07 2023-12-07 Injection mold for scroll liquid pump rotor production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311684238.6A CN117774236A (en) 2023-12-07 2023-12-07 Injection mold for scroll liquid pump rotor production

Publications (1)

Publication Number Publication Date
CN117774236A true CN117774236A (en) 2024-03-29

Family

ID=90399145

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311684238.6A Pending CN117774236A (en) 2023-12-07 2023-12-07 Injection mold for scroll liquid pump rotor production

Country Status (1)

Country Link
CN (1) CN117774236A (en)

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