CN112635186A - Winding packaging process of inductor - Google Patents
Winding packaging process of inductor Download PDFInfo
- Publication number
- CN112635186A CN112635186A CN202011532496.9A CN202011532496A CN112635186A CN 112635186 A CN112635186 A CN 112635186A CN 202011532496 A CN202011532496 A CN 202011532496A CN 112635186 A CN112635186 A CN 112635186A
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- inductor
- packaging
- winding
- belt mechanism
- conveying belt
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- 238000004804 winding Methods 0.000 title claims abstract description 65
- 238000012858 packaging process Methods 0.000 title claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 34
- 239000003292 glue Substances 0.000 claims abstract description 25
- 238000005538 encapsulation Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 21
- 238000004806 packaging method and process Methods 0.000 claims abstract description 17
- 238000007689 inspection Methods 0.000 claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 3
- 239000005022 packaging material Substances 0.000 claims description 31
- 238000002156 mixing Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 235000013547 stew Nutrition 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
Abstract
The application relates to a winding packaging process of an inductor, which comprises the following process steps: s1, assembling: sequentially and orderly arranging the shells of the inductor in the material circulation box, wherein the openings of the shells are upward; s2, packaging and glue pouring: the material transferring box loaded with the inductor to be packaged is conveyed to a first conveying belt mechanism, and the material transferring box is conveyed to a filling station through the first conveying belt mechanism and then is static; s3, a drying process: standing the packaged inductor for 20-30 min, then conveying the material flow box to a second conveying belt mechanism, conveying the material flow box to a drying station through the second conveying belt mechanism, and standing, wherein a drying chamber is arranged above the drying station; s4, checking and packaging: and (4) carrying out inspection operation on the dried inductor, and packaging and warehousing the inductor qualified through inspection. The winding of inductor after this application encapsulation has better radiating effect, can guarantee the insulating properties between the shell of inductor and the winding simultaneously again.
Description
Technical Field
The application relates to the field of inductor production, in particular to a winding packaging process of an inductor.
Background
The inductor is one of the components commonly used in the circuit, and can convert the electric energy into magnetic energy to be stored. The inductor generates a certain amount of heat during operation, and particularly for a power inductor, the current flowing through the inductive winding of the inductor is large, and the generated heat is large. If heat is accumulated near an inductance coil of the inductance winding for a long time, the heat cannot be effectively and timely dissipated, and the working stability of the inductor is affected. The conventional inductor generally adopts a potting process, an inductance winding is arranged in a shell, a heat-conducting packaging material is poured inside the shell, heat generated by the inductance winding is transferred to the shell through the heat-conducting packaging material, and then the heat is dissipated through the shell.
In the related art of the inductor packaging process, the heat conductive packaging material injected into the inductor housing is required to have a good heat dissipation effect and good insulation performance, which is determined by the performance of the heat conductive packaging material and is greatly influenced by the inductor packaging process. Therefore, there is a need to develop a winding packaging process of an inductor, so that the winding of the inductor has a good heat dissipation effect, and the insulation performance between the housing of the inductor and the winding can be ensured.
Disclosure of Invention
In order to ensure that the winding of the inductor has a good heat dissipation effect and the insulation performance between the shell of the inductor and the winding can be ensured, the application provides a winding packaging process of the inductor.
The application provides a winding packaging process of an inductor, which adopts the following technical scheme:
a winding packaging process of an inductor comprises the following process steps:
s1, assembling: sequentially and orderly arranging shells of the inductor in a material circulation box, wherein the openings of the shells are upward, then placing coil windings of the inductor in a cavity of the shell, and connecting terminals of the coil windings extend out of the openings of the shell;
s2, packaging and glue pouring: the method comprises the following steps that a material flow box loaded with an inductor to be packaged is conveyed to a first conveyor belt mechanism, the material flow box is conveyed to a filling station through the first conveyor belt mechanism and then is static, an automatic glue filling machine is installed on one side of the filling station, a transverse moving mechanism is arranged above the filling station, the transverse moving mechanism drives a glue filling gun of the automatic glue filling machine to transversely move to the upper portion of a shell of the inductor, and heat-conducting packaging materials are filled into an inner cavity of the shell until the heat-conducting packaging materials completely cover a coil winding of the inductor;
s3, a drying process: standing the packaged inductor for 20-30 min, then conveying the material flow box to a second conveying belt mechanism, conveying the material flow box to a drying station through the second conveying belt mechanism, and standing, wherein a drying chamber is arranged above the drying station, the room temperature of the drying chamber is 40-50 ℃, and the drying time is 5-10 min;
s4, inspection and packaging: and (4) carrying out inspection operation on the dried inductor, specifically inspecting the coil winding packaging effect and the filling effect of the heat-conducting packaging material, and packaging and warehousing the inductor which is qualified through inspection.
Through adopting above-mentioned technical scheme, the winding encapsulation technology of this application divide into the equipment process in proper order, the encapsulation encapsulating process, stoving process and inspection, the packaging process, the equipment process is used for placing the coil winding of inductor in the shell of inductor, the encapsulation encapsulating process is used for filling heat conduction packaging material in the shell of inductor completely, and cover the coil winding of inductor, make the coil winding in the heat that produces in the course of the work in time give off, the stoving process is used for drying and bonding heat conduction packaging material into an organic whole structure between the shell of inductor and the coil winding, inspect its coil winding encapsulation effect and heat conduction packaging material's filling effect at last. The winding packaging process is beneficial to improving the heat dissipation effect of the coil winding of the inductor on one hand, and on the other hand, the insulation performance between the shell of the inductor and the coil winding can be guaranteed.
Preferably, the automatic glue-pouring machine comprises a plurality of mixing barrels and a storage barrel, wherein a stirring mechanism is installed in each mixing barrel, a feed inlet of each mixing barrel is connected with the storage barrel, and a discharge outlet of each mixing barrel is connected with an inlet of the glue-injection gun.
Through adopting above-mentioned technical scheme for various raw materialss for disposing heat conduction packaging material hold respectively in the storage cylinder of difference, and various raw materialss carry out intensive mixing through rabbling mechanism and mix after entering compounding section of thick bamboo, and the heat conduction packaging material who makes is by in the shell through injecting glue rifle injection inductor.
Preferably, the transverse moving mechanism comprises a supporting frame fixedly arranged above the conveying belt mechanism and a moving seat arranged at the top of the supporting frame in a transverse sliding mode, a stepping motor and a glue injection gun are arranged on the moving seat, a gear is arranged on an output shaft of the motor, and a transverse rack meshed with the gear is arranged at the top of the supporting frame.
Through adopting above-mentioned technical scheme, the gear mesh transmission of the horizontal rack at braced frame top and the installation of step motor output shaft mutually because step motor installs on removing the seat to the injecting glue rifle on the drive removes the seat makes lateral sliding, thereby adjusts the position of injecting glue rifle to the inductor that needs the encapsulating directly over.
Preferably, a plurality of heating lamp tubes are installed at the top of the drying chamber, and the second conveying belt mechanism penetrates through the bottom of the drying chamber.
Through adopting above-mentioned technical scheme, the heating fluorescent tube of drying chamber top installation can carry out drying process to the inductor after the encapsulation encapsulating, opens or closes the heating fluorescent tube according to actual need to make things convenient for the temperature in the accurate control drying chamber more.
Preferably, the top of the drying chamber is provided with an axial flow fan, an air outlet of the axial flow fan is positioned above the heating lamp tube, and an air inlet of the axial flow fan is positioned outside the drying chamber.
By adopting the technical scheme, the air outlet of the axial flow fan is opposite to the heating lamp tube, and surrounding air heated by the heating lamp tube can be blown to the inductor to be dried below the heating lamp tube, so that the aim of drying the inductor is fulfilled.
Preferably, the heat-conducting packaging material consists of the following components in parts by weight: 80-100 parts of epoxy resin, 20-28 parts of silicon carbide, 10-15 parts of carbon fiber, 8-12 parts of toughening compatibilizer, 5-8 parts of polyamide and 0.2-0.4 part of antioxidant.
By adopting the technical scheme, the heat-conducting packaging material prepared from the components is a composite insulating material, has the effects of good dielectric property, low thermal expansion coefficient, high strength, high hardness, no toxicity, no harm and the like, and can be widely applied to packaging of various precise electronic parts.
Preferably, the first conveying belt mechanism and the second conveying belt mechanism both comprise a closed chain, a driving chain wheel and a driven chain wheel which are matched with the chain, the driving chain wheel of the first conveying belt mechanism is driven to rotate by the first driving motor, and the driving chain wheel of the second conveying belt mechanism is driven to rotate by the second driving motor.
By adopting the technical scheme, the driving chain wheel and the driven chain wheel are driven to rotate by the driving motor I or the driving motor II, and the chain is driven to rotate at the same time, so that the material transfer box is driven to synchronously move by the conveying belt mechanism I or the conveying belt mechanism II.
Preferably, the support is installed to transmission band mechanism one, transmission band mechanism two below, the circulation workstation between transmission band mechanism one and the transmission band mechanism two, the inductor after the encapsulation stews at the circulation workstation.
Through adopting above-mentioned technical scheme, the circulation workstation is used for placing the inductor after the encapsulation, on the one hand is for standing the processing to the inductor after the encapsulating, and on the other hand flows the quantity of box in order to compact the material that loads the inductor that treats the encapsulation, then the next stoving process of unified entering.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the utility model provides a winding encapsulation technology divide into the equipment process in proper order, the encapsulation encapsulating process, stoving process and inspection, the packaging process, the equipment process is used for placing the coil winding of inductor in the shell of inductor, the encapsulation encapsulating process is used for filling heat conduction packaging material in the shell of inductor completely, and cover the coil winding of inductor, make the heat that the coil winding produced in the course of the work in time give off, the stoving process is used for drying and bonding heat conduction packaging material into an organic whole structure between the shell of inductor and the coil winding, inspect its coil winding encapsulation effect and heat conduction packaging material's filling effect at last. The winding packaging process is beneficial to improving the heat dissipation effect of the coil winding of the inductor on one hand, and can ensure the insulation performance between the shell of the inductor and the coil winding on the other hand;
2. the utility model provides a horizontal rack at braced frame top meshes the transmission with the gear of step motor output shaft installation mutually, because step motor installs on removing the seat to the injecting glue rifle on the drive removes the seat does lateral sliding, thereby adjusts the position of injecting glue rifle to the shell of the inductor that needs the encapsulating directly over. Various raw materials for preparing the heat-conducting packaging material are respectively placed in different material storage cylinders, the raw materials are fully stirred and mixed by a stirring mechanism after entering a mixing cylinder, and the prepared heat-conducting packaging material is injected into a shell of the inductor by an adhesive injection gun;
3. the heat-conducting packaging material is a composite insulating material, has the effects of good dielectric property, low thermal expansion coefficient, high strength, high hardness, no toxicity, no harm and the like, and can be widely applied to packaging of various precise electronic parts.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Fig. 2 is a schematic diagram of an inductor package of the present invention.
Description of reference numerals: 1. a housing for an inductor; 2. material flow box; 3. a first conveying belt mechanism; 4. a circulation workbench; 5. a lateral movement mechanism; 6. a support frame; 7. a movable seat; 8. a glue injection gun; 9. a transverse rack; 10. a transverse guide rail; 11. a delivery pipe; 12. an automatic glue-pouring machine; 13. a mixing barrel; 14. a storage cylinder; 15. a second conveying belt mechanism; 16. a chain; 17. a drive sprocket; 18. a driven sprocket; 19. a drying chamber; 20. an axial flow fan; 21. driving a motor I; 22. a second driving motor; 23. a support; 24. a stepping motor; 25. a control box; 26. the lamp tube is heated.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a winding packaging process of an inductor. Referring to fig. 1 and 2, the winding packaging process of the inductor includes the following process steps:
s1, assembling: sequentially and orderly arranging the shells 1 of the inductor in the material flow box 2, wherein the openings of the shells face upwards, then placing the coil windings of the inductor in the cavity of the shells, and the connector lugs of the coil windings extend out of the openings of the shells;
s2, packaging and glue pouring: carrying a material flow box 2 loaded with an inductor to be packaged onto a first conveyor belt mechanism 3, conveying the material flow box 2 to a filling station through the first conveyor belt mechanism 3 and then standing still, installing an automatic glue pouring machine 12 at one side of the filling station, arranging a transverse moving mechanism 5 above the filling station, driving a glue injection gun 8 of the automatic glue pouring machine 12 to transversely move to the upper side of a shell 1 of the inductor by the transverse moving mechanism 5, filling a heat-conducting packaging material into an inner cavity of the shell until the heat-conducting packaging material completely covers a coil winding of the inductor, wherein the heat-conducting packaging material consists of the following components in parts by weight: 80-100 parts of epoxy resin, 20-28 parts of silicon carbide, 10-15 parts of carbon fiber, 8-12 parts of toughening compatibilizer, 5-8 parts of polyamide and 0.2-0.4 part of antioxidant;
s3, a drying process: standing the packaged inductor for 20-30 min, carrying the material transfer box 2 to a second conveyor belt mechanism 15, conveying the material transfer box to a drying station through the second conveyor belt mechanism 15, standing, arranging a drying chamber 19 above the drying station, wherein the room temperature of the drying chamber 19 is 40-50 ℃, and the drying time is 5-10 min;
s4, checking and packaging: and (4) carrying out inspection operation on the dried inductor, specifically inspecting the coil winding packaging effect and the filling effect of the heat-conducting packaging material, and packaging and warehousing the inductor which is qualified through inspection.
Referring to fig. 2, the automatic glue-pouring machine 12 of this embodiment includes a plurality of mixing barrels 13, a storage barrel 14, and a stirring mechanism is installed in the mixing barrels 13, and the feed inlet of the mixing barrels 13 is connected with the storage barrel 14, and the discharge outlet of the mixing barrels 13 is connected with the inlet of the glue injection gun 8 through a feed delivery pipe 11. The transverse moving mechanism 5 comprises a supporting frame 6 fixedly arranged above the first conveying belt mechanism 3 and a moving seat 7 arranged at the top of the supporting frame 6 in a transverse sliding mode, a stepping motor 24 and a glue injection gun 8 are arranged on the moving seat 7, a gear is arranged on an output shaft of the motor, a transverse rack 9 meshed with the gear is arranged at the top of the supporting frame 6, and a transverse guide rail 10 in sliding fit with the moving seat 7 is arranged at the top of the supporting frame 6.
The top of the drying chamber 19 is provided with a plurality of heating lamp tubes 26, and the second conveyor belt mechanism 15 penetrates along the bottom of the drying chamber 19. The top of the drying chamber 19 is provided with an axial flow fan 20, an air outlet of the axial flow fan 20 is positioned above the heating lamp tube 26, and an air inlet of the axial flow fan 20 is positioned outside the drying chamber 19.
The first conveying belt mechanism 3 and the second conveying belt mechanism 15 both comprise a closed chain 16, a driving chain wheel 17 and a driven chain wheel 18 which are matched with the chain 16, the driving chain wheel 17 of the first conveying belt mechanism 3 is driven to rotate by a first driving motor 21, and the driving chain wheel 17 of the second conveying belt mechanism 15 is driven to rotate by a second driving motor 22. The bracket 23 is installed below the first conveying belt mechanism 3 and the second conveying belt mechanism 15, the circulation workbench 4 is arranged between the first conveying belt mechanism 3 and the second conveying belt mechanism 15, and the packaged inductor stands still on the circulation workbench 4. The first driving motor 21, the second driving motor 22, the heating lamp 26, the axial flow fan 20 and the stirring mechanism are respectively connected to the control box 25, and corresponding control switches or buttons are arranged on the control box 25.
The implementation principle of the winding packaging process of the inductor in the embodiment of the application is as follows: this winding encapsulation technology divide into the equipment process in proper order, the encapsulation encapsulating process, stoving process and inspection, the packaging process, the equipment process is used for placing the coil winding of inductor in the shell 1 of inductor, the encapsulation encapsulating process is used for filling heat conduction packaging material in the shell 1 of inductor completely, and cover the coil winding of inductor, make the coil winding in the heat that the course of the work produced in time give off, the stoving process is used for drying and bonding heat conduction packaging material into an organic whole structure between the shell 1 of inductor and the coil winding, check its coil winding encapsulation effect and heat conduction packaging material's filling effect at last.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A winding packaging process of an inductor is characterized in that: the method comprises the following process steps:
s1, assembling: sequentially and orderly arranging shells (1) of the inductor in a material flow box (2) with an opening of the shells facing upwards, then placing coil windings of the inductor in a cavity of the shells, wherein connector lugs of the coil windings extend out of the opening of the shells;
s2, packaging and glue pouring: the method comprises the following steps that a material flow rotating box (2) loaded with an inductor to be packaged is conveyed to a first conveyor belt mechanism (3), the material flow rotating box (2) is conveyed to a filling station through the first conveyor belt mechanism (3) and then is static, an automatic glue pouring machine (12) is installed on one side of the filling station, a transverse moving mechanism (5) is arranged above the filling station, the transverse moving mechanism (5) drives a glue pouring gun (8) of the automatic glue pouring machine (12) to transversely move to the upper portion of a shell (1) of the inductor, and heat-conducting packaging materials are poured into an inner cavity of the shell until the heat-conducting packaging materials completely cover a coil winding of the inductor;
s3, a drying process: standing the packaged inductor for 20-30 min, then conveying the material flow box (2) to a second conveyor belt mechanism (15), conveying the material flow box to a drying station through the second conveyor belt mechanism (15), standing, arranging a drying chamber (19) above the drying station, wherein the room temperature of the drying chamber (19) is 40-50 ℃, and the drying time is 5-10 min;
s4, checking and packaging: and (4) carrying out inspection operation on the dried inductor, specifically inspecting the coil winding packaging effect and the filling effect of the heat-conducting packaging material, and packaging and warehousing the inductor which is qualified through inspection.
2. The winding encapsulation process of the inductor according to claim 1, wherein: the automatic glue pouring machine (12) comprises a plurality of mixing barrels (13) and storage barrels (14), wherein a stirring mechanism is installed in the mixing barrels (13), a feed inlet of the mixing barrels (13) is connected with the storage barrels (14), and a discharge outlet of the mixing barrels (13) is connected with an inlet of the glue injection gun (8).
3. The winding encapsulation process of the inductor according to claim 1, wherein: lateral shifting mechanism (5) including fixed braced frame (6), the lateral sliding who sets up in transmission band mechanism (3) top install in removal seat (7) at braced frame (6) top, remove and install step motor (24), injecting glue rifle (8) on seat (7), the gear is installed to the output shaft of motor, horizontal rack (9) with gear engaged with are installed at the top of braced frame (6).
4. The winding encapsulation process of the inductor according to claim 1, wherein: a plurality of heating lamp tubes (26) are installed at the top of the drying chamber (19), and the second conveying belt mechanism (15) penetrates through the bottom of the drying chamber (19).
5. The winding encapsulation process of the inductor, according to claim 4, characterized in that: an axial flow fan (20) is installed at the top of the drying chamber (19), an air outlet of the axial flow fan (20) is located above the heating lamp tube (26), and an air inlet of the axial flow fan (20) is located on the outer side of the drying chamber (19).
6. The winding encapsulation process of the inductor according to claim 1, wherein: the heat-conducting packaging material comprises the following components in parts by weight: 80-100 parts of epoxy resin, 20-28 parts of silicon carbide, 10-15 parts of carbon fiber, 8-12 parts of toughening compatibilizer, 5-8 parts of polyamide and 0.2-0.4 part of antioxidant.
7. A winding packaging process of an inductor according to any one of claims 1 to 6, characterized in that: the first conveying belt mechanism (3) and the second conveying belt mechanism (15) comprise a closed chain (16), a driving chain wheel (17) and a driven chain wheel (18), the driving chain wheel (17) is matched with the chain (16), the driving chain wheel (17) of the first conveying belt mechanism (3) is driven to rotate by a driving motor (21), and the driving chain wheel (17) of the second conveying belt mechanism (15) is driven to rotate by a driving motor (22).
8. The winding encapsulation process of the inductor according to claim 7, wherein: support (23) are installed to transmission band mechanism (3), transmission band mechanism two (15) below, circulation workstation (4) between transmission band mechanism (3) and transmission band mechanism two (15), the inductor after the encapsulation stews at circulation workstation (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011532496.9A CN112635186A (en) | 2020-12-22 | 2020-12-22 | Winding packaging process of inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011532496.9A CN112635186A (en) | 2020-12-22 | 2020-12-22 | Winding packaging process of inductor |
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| Publication Number | Publication Date |
|---|---|
| CN112635186A true CN112635186A (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011532496.9A Pending CN112635186A (en) | 2020-12-22 | 2020-12-22 | Winding packaging process of inductor |
Country Status (1)
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| CN (1) | CN112635186A (en) |
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| CN111531783A (en) * | 2020-05-06 | 2020-08-14 | 登高电气有限公司 | Injection molding process of voltage transformer |
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2020
- 2020-12-22 CN CN202011532496.9A patent/CN112635186A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB568816A (en) * | 1944-05-31 | 1945-04-20 | Gen Eng Radcliffe | Improvements relating to apparatus for impregnating articles under vacuum |
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| CN105537061A (en) * | 2015-12-04 | 2016-05-04 | 江阴乐圩光电股份有限公司 | Rotary glue-pouring machine |
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Application publication date: 20210409 |
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| RJ01 | Rejection of invention patent application after publication |