CN114147895A - Dry-type transformer winding casting mold - Google Patents
Dry-type transformer winding casting mold Download PDFInfo
- Publication number
- CN114147895A CN114147895A CN202111214931.8A CN202111214931A CN114147895A CN 114147895 A CN114147895 A CN 114147895A CN 202111214931 A CN202111214931 A CN 202111214931A CN 114147895 A CN114147895 A CN 114147895A
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- CN
- China
- Prior art keywords
- mold
- transformer winding
- pressing
- dry
- steel inner
- 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
- 238000004804 winding Methods 0.000 title claims abstract description 40
- 238000005266 casting Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 34
- 239000010935 stainless steel Substances 0.000 claims abstract description 34
- 238000007493 shaping process Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 60
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/26—Moulds or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/36—Removing moulded articles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3406—Components, e.g. resistors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a dry-type transformer winding casting mold in the field of transformer winding casting molds, which comprises a steel inner mold and a mirror surface stainless steel outer mold, wherein the steel inner mold is a cylinder with the same mold body diameter, the inner side of the steel inner mold is fixedly connected with a limiting strip for fixing the shape of the steel inner mold, the rear end of the mirror surface stainless steel outer mold is provided with a panel for shaping and positioning a high-voltage outlet head, the panel is clamped by a C-shaped clamp, a high-voltage baffle plate for fixing the radial distance between the steel inner mold and the mirror surface stainless steel outer mold is arranged above a winding, and the dry-type transformer winding casting mold is detachably fixed at the upper end of a bottom plate; the die has the advantages of less material consumption, small manufacturing difficulty, short period and low cost.
Description
Technical Field
The invention relates to the field of transformer winding casting molds, in particular to a dry type transformer winding casting mold.
Background
A typical high voltage winding die consists of: the device comprises a bottom plate, a mirror surface stainless steel outer mold, a steel inner mold, an upper baffle, a lower baffle, a cover plate, a panel, a compression screw, a C-shaped clamp, a hanging ring and the like. The steel inner die is of a large-small head long cylindrical structure, namely the size of the lower part is slightly smaller than that of the upper part, so that the steel inner die is convenient to pull out; the whole thickness of the inner die is increased, namely the so-called hard die, so that the whole inner die is not easy to deform. The upper baffle and the lower baffle are fixed in position, and the space between the upper baffle and the lower baffle is the winding forming height. The cover plate is similar to the bottom plate in size, four corners of the cover plate are locked by compression screws, and the stainless steel outer die and the winding die are fixed integrally.
The mould with the structure has the biggest advantages that the integral molding property of the winding is good, and the insulating material is not easy to leak in the pouring process. The disadvantages are also obvious, and in order to ensure that the whole body does not go, the size is thickened, and the material consumption is too much. The steel reducer inner die is high in required precision, surface smoothness is difficult to guarantee, manufacturing difficulty is high, time is long, and external machining cost is extremely high.
Therefore, it is urgently needed to provide a dry type transformer winding casting mold to solve the technical problem.
Disclosure of Invention
The invention aims to provide a dry type transformer winding casting mould which is low in material consumption, low in manufacturing difficulty, short in period and low in cost.
In order to achieve the purpose, the invention provides a dry-type transformer winding casting mold which comprises a steel inner mold and a mirror surface stainless steel outer mold, wherein the steel inner mold is a cylinder with the same mold body diameter, a limiting strip for fixing the shape of the steel inner mold is fixedly connected to the inner side of the steel inner mold, a panel for shaping and positioning a high-voltage outlet end is arranged at the rear end of the mirror surface stainless steel outer mold, the panel is clamped through a C-shaped clamp, a high-voltage baffle for fixing the radial distance between the steel inner mold and the mirror surface stainless steel outer mold is installed above a winding, and the dry-type transformer winding casting mold is detachably fixed at the upper end of a bottom plate.
Preferably, the steel inner die is formed by rolling a steel plate, a joint is arranged to be a bending structure, and inner stay bars are inserted into the middle interval of the bending structure.
Preferably, the upper end of the high-pressure baffle is provided with a feeding hole.
Preferably, a self-leveling discharge hole is formed in one side of the mirror surface stainless steel outer die.
Preferably, the upper end of the high-pressure baffle is provided with an air passage opening.
Preferably, the dry-type transformer winding casting mold is detachably fixed at the upper end of the bottom plate through a pressing device, and the pressing device comprises a pressing piece and a pressing screw rod, wherein the pressing piece is located at the upper ends of the steel inner mold and the mirror surface stainless steel outer mold, and the pressing screw rod is used for fixing the pressing piece.
Preferably, the pressing piece comprises a pressing cover plate and a pressing strip, the pressing cover plate is used for pressing the steel inner die, and the pressing strip is fixedly installed on the edge of the pressing cover plate and used for pressing the mirror surface stainless steel outer die.
Preferably, the outer edge of the pressing cover plate has the same contour as the outer wall of the steel inner die.
Preferably, the compression screw penetrates through the compression cover plate and the bottom plate, and compression nuts are in threaded connection with the upper end and the lower end of the compression screw.
Preferably, the lower end of the bottom plate is provided with a support leg.
According to the technical scheme, the steel inner die with the same die body diameter from top to bottom is small in manufacturing difficulty and short in manufacturing time, surface finish can be guaranteed, and the inner side of the steel inner die can be prevented from being stressed and deformed in a concave mode through the limiting strips, so that the steel inner die can be thinner and thinner than the steel inner die with the existing reducer, and consumable materials are reduced. The panel is used for ensuring the shaping and positioning of the high-voltage outlet head; the C-shaped clamp can clamp the panel, so that the resin does not flow out from the gap between the panel and the mirror surface stainless steel outer die during pouring. The high-pressure baffle can fix the radial distance between the steel inner die and the mirror surface stainless steel outer die, so that the shape of a cavity between the steel inner die and the mirror surface stainless steel outer die is fixed. The dry-type transformer winding casting mold is fixed at the upper end of the bottom plate, resin is prevented from leaking from a gap between the mold and the bottom plate, after casting is completed, the mold can be released from fixing with the bottom plate, and the mold is pulled upwards to complete winding demolding.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic front view of the present invention;
fig. 2 is a schematic top view of the present invention.
Description of the reference numerals
1-a steel inner die, 2-a mirror surface stainless steel outer die, 3-a limiting strip, 4-a panel, 5-a C-shaped clamp, 6-a high-pressure baffle, 7-a bottom plate, 8-a bending structure, 9-an inner supporting strip, 10-a feeding hole, 11-a self-leveling discharging hole, 12-an air passage opening, 13-a pressing piece, 14-a pressing screw rod, 15-a pressing cover plate, 16-a pressing strip, 17-a pressing nut and 18-a supporting leg.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 and 2, the invention provides a dry-type transformer winding casting mold, which comprises a steel inner mold 1 and a mirror surface stainless steel outer mold 2, wherein the steel inner mold 1 is a cylinder with the same mold body diameter, a limiting strip 3 for fixing the shape of the steel inner mold 1 is fixedly connected to the inner side of the steel inner mold 1, a panel 4 for shaping and positioning a high-voltage outlet head is arranged at the rear end of the mirror surface stainless steel outer mold 2, the panel 4 is clamped by a C-shaped clamp 5, a high-voltage baffle 6 for fixing the radial distance between the steel inner mold 1 and the mirror surface stainless steel outer mold 2 is arranged above a winding, and the dry-type transformer winding casting mold is detachably fixed at the upper end of a bottom plate 7.
The steel inner die 1 with the same die body diameter from top to bottom is small in manufacturing difficulty and short in manufacturing time, surface finish can be guaranteed, and the inner side of the steel inner die 1 can be prevented from being stressed and deformed through the limiting strips 3, so that the steel inner die 1 can be thinner and thinner compared with the steel inner die 1 with the existing reducer, and consumable materials are reduced. The panel 4 is used for ensuring the shaping and positioning of the high-voltage outlet head; and the C-shaped clamp 5 can clamp the panel 4 to ensure that the resin does not flow out from the gap between the panel 4 and the mirror surface stainless steel outer die 2 during pouring. The high-pressure baffle 6 can fix the radial distance between the steel inner die 1 and the mirror surface stainless steel outer die 2, so that the shape of a cavity between the steel inner die 1 and the mirror surface stainless steel outer die 2 is fixed. The dry type transformer winding casting mold is fixed at the upper end of the bottom plate 7, resin is prevented from leaking from a gap between the mold and the bottom plate 7, after casting is completed, the mold can be released from the bottom plate 7, and the mold is pulled upwards to complete winding demolding.
In this embodiment, the steel inner mold 1 is formed by rolling a steel plate, the joint is provided with a bending structure 8, and the inner stay bar 9 is inserted into the middle interval of the bending structure 8. The steel sheet can adopt 2mm steel sheet, easily rolls up the system, and 8 bending structures can increase strength.
In this embodiment, the upper end of the high pressure baffle 6 is provided with a feed inlet 10 for pouring resin.
In this embodiment, the upper portion of mirror surface stainless steel external mold 2 one side is provided with from levelling discharge gate 11, and when the resin of pouring was walked through from levelling discharge gate 11, the resin will be followed from levelling discharge gate 11 and outwards flowed, and the effect of self-levelling appears in fashioned winding surface like this, and is clean and tidy, need not to polish, shortens the process, avoids the workman to receive the dust injury.
In the present embodiment, the high pressure baffle 6 is provided with an air passage opening 12 at its upper end.
In this embodiment, the dry-type transformer winding casting mold is detachably fixed at the upper end of the bottom plate 7 through a pressing device, and the pressing device comprises a pressing piece 13 and a pressing screw 14, wherein the pressing piece 13 is located at the upper end of the steel inner mold 1 and the mirror surface stainless steel outer mold 2, and the pressing screw 14 is used for fixing the pressing piece 13. The pressing piece 13 is pulled by the pressing screw 14 to press the steel inner die 1 and the mirror surface stainless steel outer die 2 downwards, so that resin is prevented from flowing out of gaps between the steel inner die 1 and the mirror surface stainless steel outer die 2 and the bottom plate 7.
In the present embodiment, the pressing member 13 includes a pressing cover plate 15 and a pressing strip 16, the pressing cover plate 15 is used for pressing the steel inner mold 1, and the pressing strip 16 is fixedly mounted on the edge of the pressing cover plate 15 and is used for pressing the mirror surface stainless steel outer mold 2.
In this embodiment, the outer edge of the pressing cover plate 15 has the same profile as the outer wall of the steel inner mold 1, the pressing cover plate 15 only needs to be slightly larger than the size of the steel inner mold 1, and the mirror surface stainless steel outer mold 2 is fixedly pressed by a plurality of pressing strips 16 extended from the pressing cover plate 15, so that the use area of the cover plate can be reduced, and materials can be saved. The pressing element 13 may also be provided in the shape of a cross-shaped plate, further saving material.
In the present embodiment, the compression screw 14 penetrates through the compression cover plate 15 and the bottom plate 7, and the compression nuts 17 are screwed to both upper and lower ends of the compression screw 14. The pressing cover plate 15 and the bottom plate 7 can be pressed by rotating the pressing nut 17, so that the pressing cover plate and the bottom plate have the tendency of approaching each other, and the lower ends of the steel inner die 1 and the mirror surface stainless steel outer die 2 are tightly attached to the bottom plate 7. It is enough that only one compression nut 17 is provided, and the excessive compression workpieces do not need to be consumed, so that the working time is shortened during the disassembly and assembly.
In this embodiment, the lower end of the base plate 7 is provided with a foot 18, which keeps the base plate 7 at a distance from the ground, facilitating the rotation of the compression nut 17.
In this embodiment, the upper end of the pressing cover plate 15 is also provided with a hanging ring, so that the demoulding is facilitated.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The dry-type transformer winding casting mold is characterized by comprising a steel inner mold (1) and a mirror surface stainless steel outer mold (2), wherein the steel inner mold (1) is a cylinder with the same mold body diameter, and the inner side of the steel inner mold (1) is fixedly connected with a limiting strip (3) for fixing the shape of the steel inner mold (1); a panel (4) for shaping and positioning a high-voltage wire outlet is arranged at the rear end of the mirror surface stainless steel outer mold (2), and the panel (4) is clamped through a C-shaped clamp (5); a high-voltage baffle (6) for fixing the radial distance between the steel inner mold (1) and the mirror surface stainless steel outer mold (2) is arranged above the winding; the dry-type transformer winding casting mold is detachably fixed at the upper end of the bottom plate (7).
2. Dry-type transformer winding casting mould according to claim 1, characterized in that the steel inner mold (1) is made of rolled steel plates and the joints are provided with bending structures (8), and the inner stays (9) are inserted into the middle intervals of the bending structures (8).
3. Dry transformer winding casting mould according to claim 1, characterized in that the upper end of the high voltage baffle (6) is provided with a feed opening (10).
4. Dry transformer winding casting mould according to claim 3, characterized in that the mirror surface stainless steel outer mould (2) is provided with a self-leveling discharge hole (11) on one side.
5. Dry transformer winding casting mould according to claim 1, characterized in that the upper end of the high voltage baffle (6) is provided with an air duct opening (12).
6. A dry-type transformer winding casting mould according to claim 1, characterized in that the dry-type transformer winding casting mould is detachably fixed on the upper end of the bottom plate (7) through a pressing device, and the pressing device comprises a pressing piece (13) and a pressing screw rod (14) for fixing the pressing piece (13) on the upper ends of the steel inner mould (1) and the mirror surface stainless steel outer mould (2).
7. Dry transformer winding casting mould according to claim 6, characterized in that the pressing piece (13) comprises a pressing cover plate (15) and a pressing strip (16), the pressing cover plate (15) is used for pressing the steel inner mould (1), and the pressing strip (16) is fixedly mounted on the edge of the pressing cover plate (15) and is used for pressing the mirror surface stainless steel outer mould (2).
8. Dry transformer winding casting mould according to claim 7, characterized in that the outer edge of the compression cover plate (15) is contoured the same as the outer wall of the steel inner mould (1).
9. Dry transformer winding casting mould according to claim 7, characterized in that the hold-down screw (14) penetrates the hold-down cover plate (15) and the bottom plate (7), and the hold-down screw (14) is screwed with a hold-down nut (17) at both upper and lower ends.
10. Dry transformer winding casting mould according to claim 1, characterized in that the bottom plate (7) is provided with feet (18) at its lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214931.8A CN114147895A (en) | 2021-10-19 | 2021-10-19 | Dry-type transformer winding casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214931.8A CN114147895A (en) | 2021-10-19 | 2021-10-19 | Dry-type transformer winding casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114147895A true CN114147895A (en) | 2022-03-08 |
Family
ID=80462752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111214931.8A Pending CN114147895A (en) | 2021-10-19 | 2021-10-19 | Dry-type transformer winding casting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114147895A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266543Y (en) * | 2009-01-20 | 2009-07-01 | 广东海鸿变压器有限公司 | Pouring mold for stereo wound core resin insulated dry transformer |
| CN201498376U (en) * | 2009-09-27 | 2010-06-02 | 宁波奥克斯高科技有限公司 | Epoxy casting tool for transformer |
| CN201601024U (en) * | 2009-12-04 | 2010-10-06 | 西安天虹电器有限公司 | Novel high-voltage coil die of cast resin dry transformer |
| CN201741570U (en) * | 2010-07-12 | 2011-02-09 | 河南逐鹿电器有限公司 | Cast resin transformer coil mold |
| CA2719822A1 (en) * | 2009-11-18 | 2011-05-18 | Abb Technology Ltd | A method of manufacturing a transformer coil |
| CN205104362U (en) * | 2015-11-19 | 2016-03-23 | 沈阳中变电气有限责任公司 | Interior external mold is epoxy cast dry type transformer coil casting mold of pressure equipment respectively |
| CN205428685U (en) * | 2015-08-21 | 2016-08-03 | 重庆络肯机械制造有限公司 | Dry -type transformer high -pressure coil casting mold |
| CN106128749A (en) * | 2016-08-03 | 2016-11-16 | 广州中车骏发电气有限公司 | Coil die structure |
| CN208601796U (en) * | 2018-08-22 | 2019-03-15 | 华翔翔能电气股份有限公司 | A kind of dry-type transformer winding casting mold |
-
2021
- 2021-10-19 CN CN202111214931.8A patent/CN114147895A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266543Y (en) * | 2009-01-20 | 2009-07-01 | 广东海鸿变压器有限公司 | Pouring mold for stereo wound core resin insulated dry transformer |
| CN201498376U (en) * | 2009-09-27 | 2010-06-02 | 宁波奥克斯高科技有限公司 | Epoxy casting tool for transformer |
| CA2719822A1 (en) * | 2009-11-18 | 2011-05-18 | Abb Technology Ltd | A method of manufacturing a transformer coil |
| CN201601024U (en) * | 2009-12-04 | 2010-10-06 | 西安天虹电器有限公司 | Novel high-voltage coil die of cast resin dry transformer |
| CN201741570U (en) * | 2010-07-12 | 2011-02-09 | 河南逐鹿电器有限公司 | Cast resin transformer coil mold |
| CN205428685U (en) * | 2015-08-21 | 2016-08-03 | 重庆络肯机械制造有限公司 | Dry -type transformer high -pressure coil casting mold |
| CN205104362U (en) * | 2015-11-19 | 2016-03-23 | 沈阳中变电气有限责任公司 | Interior external mold is epoxy cast dry type transformer coil casting mold of pressure equipment respectively |
| CN106128749A (en) * | 2016-08-03 | 2016-11-16 | 广州中车骏发电气有限公司 | Coil die structure |
| CN208601796U (en) * | 2018-08-22 | 2019-03-15 | 华翔翔能电气股份有限公司 | A kind of dry-type transformer winding casting mold |
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