CN117774235A - Manufacturing process of scroll liquid pump rotor - Google Patents
Manufacturing process of scroll liquid pump rotor Download PDFInfo
- Publication number
- CN117774235A CN117774235A CN202311677645.4A CN202311677645A CN117774235A CN 117774235 A CN117774235 A CN 117774235A CN 202311677645 A CN202311677645 A CN 202311677645A CN 117774235 A CN117774235 A CN 117774235A
- Authority
- CN
- China
- Prior art keywords
- injection molding
- scroll
- upper die
- plastic layer
- engineering plastic
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 title claims abstract description 20
- 238000001746 injection moulding Methods 0.000 claims abstract description 93
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 70
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 238000000465 moulding Methods 0.000 claims abstract description 23
- 238000003754 machining Methods 0.000 claims abstract description 6
- 239000000178 monomer Substances 0.000 claims description 71
- 238000013461 design Methods 0.000 claims description 25
- 229920003023 plastic Polymers 0.000 claims description 25
- 239000004033 plastic Substances 0.000 claims description 25
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000007493 shaping process Methods 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000000806 elastomer Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a manufacturing process of a scroll liquid pump rotor, which comprises the following steps: s1, machining a lower die, assembling an upper die and a primary injection molding shell, installing a positioning ring, machining and molding a metal body, S4, and performing primary injection molding and S6 and secondary injection molding on an engineering plastic layer. The manufacturing process adopts the upper die and the primary injection molding shell, not only can realize the secondary injection molding of the engineering plastic layer on the rotor and control the deformation of the engineering plastic layer, but also is beneficial to demolding of the engineering plastic layer, improves the bonding strength between the engineering plastic layer and the metal body, improves the installation stability and reliability of the whole rotor, and prolongs the service life of the rotor.
Description
Technical Field
The invention relates to the technical field of liquid pumps, in particular to a manufacturing process of 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 transportation, a volumetric pump, a rotor pump or a centrifugal pump is conventionally used for refrigerant transportation. When the conventional pumping equipment is operated, metal powder on the surface of a part can fall off due to abrasion of moving parts, and the motor is burnt. Meanwhile, conventional pumps require a medium such as a lubricant or oil when operating, but in data center cooling systems, there is a risk that the lubricant or oil used by the pumping equipment flows into the system through the cooling channels. Thus, the data center cooling system is in an oil-free state; and the abrasion of friction pairs in the lubrication-free pumping equipment affects the working efficiency and the service life of the cooling system.
In the prior art, when the rotor of the liquid pump is subjected to injection molding, an engineering plastic layer is generally formed by adopting a one-step injection molding process, the common engineering plastic injection molding layer can shrink after being cooled, deformation is easy to occur, meanwhile, the engineering plastic layer is easy to fall off due to the defect of structural design, the processing quality and the service life of the rotor are affected, and the service life of the liquid pump in the working process is further affected.
Disclosure of Invention
The invention aims to provide a technical scheme of a manufacturing process of a scroll liquid pump rotor, which aims at overcoming the defects of the prior art, and the manufacturing process adopts an upper die and a one-time injection molding shell, so that the secondary injection molding of an engineering plastic layer on the rotor can be realized, the deformation of the engineering plastic layer is controlled, the demolding of the engineering plastic layer is facilitated, the bonding strength between the engineering plastic layer and a metal body is improved, the installation stability and reliability of the whole rotor are improved, and the service life of the whole rotor is prolonged.
In order to solve the technical problems, the invention adopts the following technical scheme:
the manufacturing process of the scroll liquid pump rotor is characterized by comprising the following steps of:
s1, machining a lower die
a. Firstly, manufacturing a corresponding lower die according to design requirements, processing a limiting block along a placing cavity of the lower die, forming a limiting groove between the limiting block and the lower die, and arranging an opening on one side of the placing cavity facing upwards;
b. uniformly forming grooves along the outer circumferential edge of the top surface of the lower die, wherein the sizes of the grooves are equal;
c. uniformly mounting a second lug plate along the outer circumferential side surface of the lower die;
s2, upper die and one-time injection molding shell assembly
a. Firstly, determining the size of an upper die according to the size of a positioning ring, processing corresponding splicing monomers, respectively forming cavities with arc structures from the bottom to the top of each splicing monomer, simultaneously installing injection molding pipes along the tops of the splicing monomers to enable the injection molding pipes to be communicated with the cavities, fixing two adjacent splicing monomers through a second fastener to enable the two adjacent splicing monomers to form an upper die with an annular structure, and enabling the cavities to be communicated to form a secondary injection molding cavity;
b. then processing a corresponding primary injection molding shell according to the size of the secondary injection molding cavity and the design size of the rotor, wherein the primary injection molding shell is formed by splicing at least two injection molding monomers, a primary injection molding cavity is formed in the primary injection molding shell, and the primary injection molding shell is arranged in the secondary injection molding cavity through a fixing mechanism and is attached to the bottom surface of the upper die;
s3, mounting a positioning ring
Selecting a proper positioning ring according to the design size of the upper die, mounting a first lug plate matched with a second lug plate along the outer circumferential side surface of the positioning ring, and mounting the positioning ring on a threaded hole on the outer side surface of the splice unit through a fastening screw;
s4, machining and forming the metal body
Determining the size of a metal body according to the design requirement of a rotor, forming a required rotary table, a sleeve and a scroll strip through integral casting, wherein the sleeve is positioned at the center of the rotary table, a stop block is integrally formed in the sleeve, the scroll strip is arranged on one side of the rotary table, which is close to the sleeve, and takes the sleeve as the center to form an Archimedes spiral line structure, a bearing hole is arranged on the other side of the rotary table, at least one drainage hole is arranged on one side of the scroll strip, which is close to the sleeve, and grooves are formed on both the scroll strip and the rotary table;
s5, one-step injection molding of engineering plastic layer
a. Firstly, placing the processed metal body in a placing cavity of a lower die, and enabling one side with a bearing hole to be downwards assembled in a limiting groove for limiting;
b. then the upper die is placed above the lower die and matched through a positioning mechanism, the first lug plate and the second lug plate are fixedly connected through a first bolt, so that the positioning ring is positioned right above the lower die, and the first lug plate, the second lug plate and the first bolt form a first fastener to realize the fixed assembly of the upper die and the positioning ring;
c. then injecting molten elastomer material between the metal body and the primary injection molding shell through an injection molding pipe, wherein the injection molding temperature is 400 ℃, and forming a first engineering plastic layer;
d. after the first engineering plastic layer reaches the set strength, firstly opening a second fastener, removing one splicing monomer of the upper die to realize demolding, then removing the adjacent splicing monomer, and removing the positioning ring after the last splicing monomer is removed until the first engineering plastic layer is completely demolded;
s6, engineering plastic layer secondary injection molding
a. Firstly, removing a primary injection molding shell on each splicing monomer, fixedly connecting each splicing monomer through a second fastener, and simultaneously installing a positioning ring on the outer side of each splicing monomer;
b. then the upper die is placed above the lower die and matched through a positioning mechanism, the first lug plate and the second lug plate are fixedly connected through a first bolt, so that the positioning ring is positioned right above the lower die, and the first lug plate, the second lug plate and the first bolt form a first fastener to realize the fixed assembly of the upper die and the positioning ring;
c. then injecting molten elastomer material into the space between the first engineering plastic layer and the inner wall of the injection monomer through an injection pipe, wherein the injection temperature is 350 ℃, and forming a second engineering plastic layer;
d. after the second engineering plastic layer reaches the set strength, the second fastener is opened first, one splicing monomer of the upper die is removed, demolding is achieved, and then adjacent splicing monomers are removed until the second engineering plastic layer is completely demolded.
The manufacturing process adopts the upper die and the primary injection molding shell, so that the secondary injection molding of the engineering plastic layer on the rotor can be realized, the deformation of the engineering plastic layer is controlled, the demolding of the engineering plastic layer is facilitated, the bonding strength between the engineering plastic layer and the metal body is improved, the mounting stability and reliability of the whole rotor are improved, and the service life of the rotor is prolonged.
Further, the top surface of the second otic placode in step S1 in-process c is less than the bottom surface of recess, and the design of this structure not only is convenient for go up the location assembly between mould and the bed die, is favorable to installing each concatenation monomer in required position moreover, is convenient for fix between holding ring and the concatenation monomer, improves the quality of moulding plastics.
Further, the second fastener in step S2 process a includes third otic placode and second bolt, and the third otic placode is located on the free top surface of concatenation, and the third otic placode between two adjacent concatenation monomers is through second bolted connection, is convenient for carry out fixed connection with two adjacent concatenation monomers.
Further, the injection molding monomer in the step S2 process b comprises a bottom plate attached to the bottom of the upper die, and a first scroll bar forming cover and a second scroll bar forming cover which are of arc structures, wherein the first scroll bar forming cover, the second scroll bar forming cover and the bottom plate are integrally formed, and engineering plastic layers are formed on the surface of the rotor conveniently through the design of the first scroll bar forming cover, the second scroll bar forming cover and the bottom plate, so that the injection molding quality is improved.
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 the cooperation forms the locating hole between the concatenation monomer, and spacing hole and locating hole each other are concentric circles, and spacing between spacing hole and the locating hole is H, and 2mm < H < 4mm, and the design of this interval is convenient for the injection molding of engineering plastic layer not only, is difficult for droing moreover, improves the adhesive strength of engineering plastic layer, further prolongs the life of rotor.
Further, the fixed establishment in step S2 process b includes fixture block and draw-in groove, be equipped with the arc strip on the outer circumference side of bottom plate, arc strip and bed die place intracavity wall assorted, 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 improves the quality of moulding plastics, 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 moulding plastics once, further improve the quality of moulding plastics.
Further, the positioning mechanism in step S5 process b 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, 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.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the manufacturing process adopts the upper die and the primary injection molding shell, so that the secondary injection molding of the engineering plastic layer on the rotor can be realized, the deformation of the engineering plastic layer is controlled, the demolding of the engineering plastic layer is facilitated, the bonding strength between the engineering plastic layer and the metal body is improved, the mounting stability and reliability of the whole rotor are improved, and the service life of the rotor is prolonged.
2. The top surface of second otic placode is less than the bottom surface of recess, and the design of this structure not only is convenient for go up the location assembly between mould and the bed die, is favorable to installing each concatenation monomer in required position moreover, is convenient for fix between holding ring and the concatenation monomer, improves 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 a flow chart of a process for manufacturing a scroll pump rotor in accordance with the present invention;
FIG. 2 is a schematic diagram of the connection between the upper and lower molds of the present invention;
FIG. 3 is a schematic view of the connection between the upper mold and the primary injection molded shell in the present invention;
FIG. 4 is a schematic view of the upper die structure in the present invention;
FIG. 5 is a schematic view of a primary injection molded housing according to the present invention;
FIG. 6 is a schematic view of the structure of the direction A in FIG. 5;
FIG. 7 is a schematic view of the structure of the lower mold of the present invention;
FIG. 8 is an effect diagram of the rotor of the present invention;
FIG. 9 is a schematic view of the structure in the direction B in FIG. 8;
fig. 10 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.
The scroll liquid pump rotor of the present invention, as shown in fig. 8 to 10, specifically comprises a turntable 601, scroll strips 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, a stop block 604 is arranged in the sleeve 603, and a bearing hole 610 is arranged on the turntable 601. The rotor 6 is provided with a drainage hole 605, and high-pressure liquid can be drained through the drainage hole 605 for realizing stress balance of the rotor 6.
The rotor 6 includes metal body 612 and engineering plastic layer 613, and the one side that metal body 612 is close to scroll strip 602 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 613 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, and capable of running dry, and the refrigerant in the cooling system is easy to volatilize, volatilizes to generate gas, and the gas can be in the running dry, so that the requirement of the running dry can be met.
As shown in fig. 1 to 7, the manufacturing process of the scroll liquid pump rotor of the present invention comprises the following steps:
s1, processing a lower die 2
a. Firstly, manufacturing a corresponding lower die 2 according to design requirements, processing a limiting block 202 along a placing cavity 201 of the lower die 2, forming a limiting groove 203 between the limiting block 202 and the lower die 2, wherein the shape of the limiting groove 203 is the same as that of one side, close to a bearing hole 610, of a metal body 612, so that the metal body 612 is convenient to stably place, and an opening is formed in one upward side of the placing cavity 201, so that the upper die 1 and the lower die 2 are convenient to cooperate;
b. then three grooves 204 are uniformly formed along the peripheral edge of the top surface of the lower die 2, and the sizes of the grooves 204 are equal, so that the grooves are convenient to position with each splicing monomer 106, and the die assembly speed is improved;
c. then evenly install four second otic placodes 402 along the outer circumference side of bed die 2, the top surface of second otic placode 402 is less than the bottom surface of recess 204, and the design of this structure is convenient for not only go up the location assembly between mould 1 and the bed die 2, is favorable to installing each concatenation monomer 106 in required position moreover, is convenient for fix between holding ring 8 and the concatenation monomer 106, improves the quality of moulding plastics.
S2, assembling the upper die 1 and the primary injection molding shell 5
a. Firstly, determining the size of an upper die 1 according to the size of a positioning ring 8, processing corresponding splicing monomers 106, respectively forming cavities with arc structures from the bottom to the top of each splicing monomer 106, simultaneously installing injection molding pipes 3 along the tops of the splicing monomers 106 to enable the injection molding pipes 3 to be communicated with the cavities, and fixing two adjacent splicing monomers 106 through a second fastener 7 to enable the two adjacent splicing monomers 106 to form the upper die 1 with an annular structure, wherein the cavities are communicated to form a secondary injection molding cavity 102; the second fastening member 7 includes a third ear plate 701 and a second bolt 702, the third ear plate 701 is disposed on the top surface of the splice unit 106, and the third ear plate 701 between two adjacent splice units 106 is connected by the second bolt 702, so that the two adjacent splice units 106 are fixedly connected.
b. Then processing a corresponding primary injection molding shell 5 according to the size of the secondary injection molding cavity 102 and the design size of the rotor 6, wherein the primary injection molding shell 5 is formed by splicing at least two injection molding monomers 501, a primary injection molding cavity 509 is formed in the primary injection molding shell 5, and the primary injection molding shell 5 is installed in the secondary injection molding cavity 102 through a fixing mechanism and is attached to the bottom surface of the upper die 1;
the injection molding unit 501 comprises a bottom plate 502 attached to the bottom of the upper die 1, and a first scroll bar 602 forming cover 503 and a second scroll bar 602 forming cover 504 which are in arc structures, wherein the first scroll bar 602 forming cover 503, the second scroll bar 602 forming cover 504 and the bottom plate 502 are integrally formed, and engineering plastic layers 613 are conveniently formed on the surface of the rotor 6 through the design of the first scroll bar 602 forming cover 503, the second scroll bar 602 forming cover 504 and the bottom plate 502, so that the injection molding quality is improved.
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 positioning holes 101 are formed by matching the splicing monomers 106, 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 < H < 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 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 placing cavity 201 inner wall phase-match 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 phase-match, 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 plastic layer 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 casing 5 and are connected in last mould 1, improve the installation stability between casing 5 and the last mould 1 of once moulding plastics, further improve the quality of moulding plastics.
S3, the positioning ring 8 is installed
Selecting a proper positioning ring 8 according to the design size of the upper die 1, mounting a first lug plate 401 matched with a second lug plate 402 along the outer circumferential side surface of the positioning ring 8, and mounting the positioning ring 8 on a threaded hole 104 on the outer side surface of the splicing monomer 106 through a fastening screw 9;
s4, processing and forming the metal body 612
The size of a metal body 612 is determined according to the design requirement of a rotor 6, a required rotary table 601, a sleeve 603 and a scroll strip 602 are formed through integral casting, the sleeve 603 is positioned at the center of the rotary table 601, a stop block 604 is integrally formed in the sleeve 603, the scroll strip 602 is arranged on one side of the rotary table 601 close to the sleeve 603 and takes the sleeve 603 as the center to form an Archimedes spiral line structure, a bearing hole 610 is formed on the other side of the rotary table 601, at least one drainage hole 605 is formed on one side of the scroll strip 602 close to the sleeve 603, and grooves 614 are formed on the scroll strip 602 and the rotary table 601;
s5, engineering plastic layer 613 one-time injection molding
a. Firstly, placing the processed metal body 612 in a placing cavity 201 of a lower die 2, and enabling one side with a bearing hole 610 to be downwards assembled in a limiting groove 203 for limiting;
b. then the upper die 1 is placed above the lower die 2 and matched through a positioning mechanism, the first lug plate 401 and the second lug plate 402 are fixedly connected through the first bolt 403, the positioning ring 8 is positioned right above the lower die 2, the first lug plate 401, the second lug plate 402 and the first bolt 403 form a first fastener 4, and the upper die 1 and the positioning ring 8 are fixedly assembled; the positioning mechanism comprises a protruding block 103 and a groove 204, wherein 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.
c. Then, the molten elastomer material is injected between the metal body 612 and the primary injection molding shell 5 through the injection molding pipe 3, wherein the injection molding temperature is 400 ℃, and a first engineering plastic layer 613 is formed;
d. after the first engineering plastic layer 613 reaches the set strength, the second fastener 7 is opened firstly, one splicing monomer 106 of the upper die 1 is removed to realize demoulding, then the adjacent splicing monomer 106 is removed, and after the last splicing monomer 106 is removed, the positioning ring 8 is removed until the first engineering plastic layer 613 finishes demoulding;
s6, engineering plastic layer 613 secondary injection molding
a. Firstly, removing the primary injection molding shell 5 on each splicing monomer 106, fixedly connecting each splicing monomer 106 through a second fastener 7, and simultaneously installing a positioning ring 8 on the outer side of each splicing monomer 106;
b. then the upper die 1 is placed above the lower die 2 and matched through a positioning mechanism, the first lug plate 401 and the second lug plate 402 are fixedly connected through the first bolt 403, the positioning ring 8 is positioned right above the lower die 2, the first lug plate 401, the second lug plate 402 and the first bolt 403 form a first fastener 4, and the upper die 1 and the positioning ring 8 are fixedly assembled;
c. then injecting molten elastomer material into the space between the first engineering plastic layer 613 and the inner wall of the injection monomer 501 through an injection pipe 3, wherein the injection temperature is 350 ℃, and forming a second engineering plastic layer 613;
d. after the second engineering plastic layer 613 reaches the set strength, the second fastener 7 is opened first, one of the splicing monomers 106 of the upper die 1 is removed to realize demolding, and then the adjacent splicing monomer 106 is removed until the second engineering plastic layer 613 finishes demolding.
The manufacturing process adopts the upper die 1 and the primary injection molding shell 5, not only can realize the secondary injection molding of the engineering plastic layer 613 on the rotor 6 and control the deformation of the engineering plastic layer 613, but also is beneficial to demolding of the engineering plastic layer 613, improves the bonding strength between the engineering plastic layer 613 and the metal body 612, improves the installation stability and reliability of the whole rotor 6, and prolongs the service life of the rotor.
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 (8)
1. The manufacturing process of the scroll liquid pump rotor is characterized by comprising the following steps of:
s1, machining a lower die
a. Firstly, manufacturing a corresponding lower die according to design requirements, processing a limiting block along a placing cavity of the lower die, forming a limiting groove between the limiting block and the lower die, and arranging an opening on one side of the placing cavity facing upwards;
b. uniformly forming grooves along the outer circumferential edge of the top surface of the lower die, wherein the sizes of the grooves are equal;
c. uniformly mounting a second lug plate along the outer circumferential side surface of the lower die;
s2, upper die and one-time injection molding shell assembly
a. Firstly, determining the size of an upper die according to the size of a positioning ring, processing corresponding splicing monomers, respectively forming cavities with arc structures from the bottom to the top of each splicing monomer, simultaneously installing injection molding pipes along the tops of the splicing monomers to enable the injection molding pipes to be communicated with the cavities, fixing two adjacent splicing monomers through a second fastener to enable the two adjacent splicing monomers to form an upper die with an annular structure, and enabling the cavities to be communicated to form a secondary injection molding cavity;
b. then processing a corresponding primary injection molding shell according to the size of the secondary injection molding cavity and the design size of the rotor, wherein the primary injection molding shell is formed by splicing at least two injection molding monomers, a primary injection molding cavity is formed in the primary injection molding shell, and the primary injection molding shell is arranged in the secondary injection molding cavity through a fixing mechanism and is attached to the bottom surface of the upper die;
s3, mounting a positioning ring
Selecting a proper positioning ring according to the design size of the upper die, mounting a first lug plate matched with a second lug plate along the outer circumferential side surface of the positioning ring, and mounting the positioning ring on a threaded hole on the outer side surface of the splice unit through a fastening screw;
s4, machining and forming the metal body
Determining the size of a metal body according to the design requirement of a rotor, forming a required rotary table, a sleeve and a scroll strip through integral casting, wherein the sleeve is positioned at the center of the rotary table, a stop block is integrally formed in the sleeve, the scroll strip is arranged on one side of the rotary table, which is close to the sleeve, and takes the sleeve as the center to form an Archimedes spiral line structure, a bearing hole is arranged on the other side of the rotary table, at least one drainage hole is arranged on one side of the scroll strip, which is close to the sleeve, and grooves are formed on both the scroll strip and the rotary table;
s5, one-step injection molding of engineering plastic layer
a. Firstly, placing the processed metal body in a placing cavity of a lower die, and enabling one side with a bearing hole to be downwards assembled in a limiting groove for limiting;
b. then the upper die is placed above the lower die and matched through a positioning mechanism, the first lug plate and the second lug plate are fixedly connected through a first bolt, so that the positioning ring is positioned right above the lower die, and the first lug plate, the second lug plate and the first bolt form a first fastener to realize the fixed assembly of the upper die and the positioning ring;
c. then injecting molten elastomer material between the metal body and the primary injection molding shell through an injection molding pipe, wherein the injection molding temperature is 400 ℃, and forming a first engineering plastic layer;
d. after the first engineering plastic layer reaches the set strength, firstly opening a second fastener, removing one splicing monomer of the upper die to realize demolding, then removing the adjacent splicing monomer, and removing the positioning ring after the last splicing monomer is removed until the first engineering plastic layer is completely demolded;
s6, engineering plastic layer secondary injection molding
a. Firstly, removing a primary injection molding shell on each splicing monomer, fixedly connecting each splicing monomer through a second fastener, and simultaneously installing a positioning ring on the outer side of each splicing monomer;
b. then the upper die is placed above the lower die and matched through a positioning mechanism, the first lug plate and the second lug plate are fixedly connected through a first bolt, so that the positioning ring is positioned right above the lower die, and the first lug plate, the second lug plate and the first bolt form a first fastener to realize the fixed assembly of the upper die and the positioning ring;
c. then injecting molten elastomer material into the space between the first engineering plastic layer and the inner wall of the injection monomer through an injection pipe, wherein the injection temperature is 350 ℃, and forming a second engineering plastic layer;
d. after the second engineering plastic layer reaches the set strength, the second fastener is opened first, one splicing monomer of the upper die is removed, demolding is achieved, and then adjacent splicing monomers are removed until the second engineering plastic layer is completely demolded.
2. The manufacturing process of the scroll liquid pump rotor according to claim 1, wherein: the top surface of the second ear plate in step S1 process c is lower than the bottom surface of the groove.
3. The manufacturing process of the scroll liquid pump rotor according to claim 1, wherein: the second fastening piece in the step S2 process a comprises a third lug plate and a second bolt, wherein the third lug plate is arranged on the top surface of the splicing monomers, and the third lug plate between two adjacent splicing monomers is connected through the second bolt, so that the two adjacent splicing monomers can be fixedly connected.
4. The manufacturing process of the scroll liquid pump rotor according to claim 1, wherein: the injection molding monomer in the step S2 process b 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 of arc structures, wherein the first scroll bar forming covers, the second scroll bar forming covers and the bottom plate are integrally formed.
5. The manufacturing process of the scroll liquid pump rotor according to claim 4, 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.
6. The manufacturing process of the scroll liquid pump rotor according to claim 4, wherein: the injection molding monomers are spliced to form a limiting hole, the splicing monomers are matched to form a positioning hole, the limiting hole and the positioning hole are concentric circles, and the spacing between the limiting hole and the positioning hole is H, wherein H is more than 2mm and less than 4mm.
7. The manufacturing process of the scroll liquid pump rotor according to claim 4, wherein: the fixing mechanism in the step S2 process b 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 placing 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.
8. The manufacturing process of the scroll liquid pump rotor according to claim 1, wherein: the positioning mechanism in the step S5 process b comprises protruding blocks and grooves, wherein the protruding blocks are distributed annularly along the edge of the bottom surface of the upper die, the grooves are distributed annularly along the edge of the top surface of the lower die, and the protruding blocks are matched with the grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311677645.4A CN117774235A (en) | 2023-12-07 | 2023-12-07 | Manufacturing process of scroll liquid pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311677645.4A CN117774235A (en) | 2023-12-07 | 2023-12-07 | Manufacturing process of scroll liquid pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117774235A true CN117774235A (en) | 2024-03-29 |
Family
ID=90388040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311677645.4A Pending CN117774235A (en) | 2023-12-07 | 2023-12-07 | Manufacturing process of scroll liquid pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117774235A (en) |
-
2023
- 2023-12-07 CN CN202311677645.4A patent/CN117774235A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20100328892A1 (en) | Molded heat sink and method of making same | |
| CN113650199B (en) | Split type composite material core mold for winding solid rocket engine shell | |
| CN117774235A (en) | Manufacturing process of scroll liquid pump rotor | |
| CN117774236A (en) | Injection mold for scroll liquid pump rotor production | |
| CN117734064A (en) | Manufacturing process of scroll liquid pump stator | |
| CN111654174B (en) | Heat dissipation casing assembly for motor and manufacturing method | |
| KR101557451B1 (en) | Centrifugal casting mold cooling fan rotor appointed | |
| CN218926195U (en) | Die casting machine die | |
| CN117047078A (en) | Motor shell low-pressure casting cooling process with combined action of water cooling and air cooling | |
| CN101961828A (en) | Molding method of scroll and scroll | |
| CN117754826A (en) | Injection mold for manufacturing scroll liquid pump stator | |
| CN216100185U (en) | Small injection mold with hot runner structure | |
| CN110732595A (en) | Mould for hot forming and/or press hardening of sheet metal and method for producing cooling tool section | |
| CN117754820A (en) | Manufacturing process of plum blossom liquid pump rotor | |
| CN210676878U (en) | Liquid metal die-casting die | |
| CN117754821A (en) | Die for manufacturing plum blossom liquid pump rotor | |
| CN112727739A (en) | Cylinder device | |
| CN107335786B (en) | Sand shooting plate device and method for iron mold with different upper plane heights | |
| CN208484183U (en) | Water tub of washing machine mold cavity copper blocks up formula cooling water channel | |
| CN215902708U (en) | Aluminum alloy casting equipment | |
| CN113021740B (en) | Mould of combined material radome fairing | |
| EP3708332A1 (en) | Device for demoulding negatives in thermoplastic injection moulds | |
| CN215033474U (en) | A melt cup for die casting machine | |
| CN111016015B (en) | Composite material back rib mold with sinking boss and demolding method thereof | |
| CN100393646C (en) | Mould set with plural cores detachable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |