CN114783706B - Insulating paper ring of transformer takes off pipe machine - Google Patents
Insulating paper ring of transformer takes off pipe machine Download PDFInfo
- Publication number
- CN114783706B CN114783706B CN202210458539.6A CN202210458539A CN114783706B CN 114783706 B CN114783706 B CN 114783706B CN 202210458539 A CN202210458539 A CN 202210458539A CN 114783706 B CN114783706 B CN 114783706B
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- China
- Prior art keywords
- support
- riser
- spring
- plate
- clamping part
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Links
- 238000003825 pressing Methods 0.000 claims abstract description 38
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 description 9
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
-
- 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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/04—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 for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
Abstract
The utility model provides a transformer insulation paper circle takes off tub machine, belongs to transformer manufacturing technical field, including support, clamping part, drive division, mould and paper circle, the clamping part erects on the support and presss from both sides tight paper circle, and the clamping part slides on the support, and drive division installs on the support and is connected with the mould, and the paper circle winds on the mould. The support includes main frame, back riser, back support, preceding riser and fore-stock, and both ends middle part around the main frame has back riser and preceding riser respectively, installs the back support on the back riser, installs the fore-stock on the preceding riser, installs drive division on the preceding support, and the back support includes end plate, grid and shaft hole. The clamping part comprises four sliding blocks, two pressing plates and a second spring, wherein the sliding blocks are respectively arranged on the cross beams at two sides of the main frame in a group, the tops of the sliding blocks are provided with vertical shafts, the four sliding blocks are connected into a whole by connecting rods, the two pressing plates are respectively arranged on the vertical shafts at the left side and the right side, each pressing plate comprises two connecting rods, a spring piece and a pressing piece, and the two connecting rods are respectively sleeved on the vertical shafts.
Description
Technical Field
The invention belongs to the technical field of transformer manufacturing, and particularly relates to a transformer insulation paper ring pipe removing machine.
Background
Various insulating parts are used in the production of transformers, one of the important insulating parts is an insulating paper ring, the insulating paper ring is required to be separated from a rolling die after rolling, in addition, the integrity of the paper ring is required to be maintained in the process of the insulating paper ring pipe-separating operation, the paper ring cannot be damaged, the current paper ring pipe-separating device is mainly used for pipe-separating operation in a simple knocking die or rotating die or a mode of combining the two modes, and the excessively strong rotating die is particularly easy to damage the paper ring in the initial stage of the paper ring pipe-separating operation.
Disclosure of Invention
The invention provides a transformer insulation paper ring pipe-removing machine, which solves the problems in the background technology.
The technical problems solved by the invention are realized by adopting the following technical scheme:
the utility model provides a transformer insulation paper circle takes off tub machine, includes support, clamping part, drive division, mould and paper circle, and the clamping part erects on the support and presss from both sides tight paper circle, and the clamping part slides on the support, and drive division installs on the support and is connected with the mould, and the paper circle winds on the mould.
The support includes main frame, back riser, back support, preceding riser and fore-stock, and both ends middle part has back riser and preceding riser respectively around the main frame, installs the back support on the back riser, installs the fore-stock on the preceding riser, and the preceding support is last to install drive division, and the back support includes end plate, grid and shaft hole, and the end plate is installed on the back riser, and a plurality of toper grids of arranging are connected forward to the end plate, and the shaft hole is connected to the front end of grid, installs the rear joint in the shaft hole.
The clamping part comprises four sliding blocks, pull rods, first springs, pressing plates and second springs, wherein the sliding blocks are arranged in pairs and slide on cross beams at two sides of the main frame respectively, vertical shafts are arranged at the tops of the sliding blocks, the pressing plates are arranged on the vertical shafts, the pull rods are I-shaped, the four sliding blocks are connected into a whole by the pull rods, the two pressing plates are respectively arranged on the vertical shafts at the left side and the right side, the pressing plates comprise two connecting rods, spring pieces and pressing pieces, the two connecting rods are respectively sleeved on the vertical shafts, the end parts of the connecting rods are connected with the spring pieces, a plurality of pressing pieces are uniformly distributed on the spring pieces, and the pressing pieces are arc-shaped. The connecting rod is sleeved with a second spring.
The drive part comprises a rear joint, a front joint, a transmission part, a rolling ball, a driving part and a third spring, wherein the rear joint is hinged on a shaft hole, the rear joint is connected with the rear end of the die, the front joint is hinged on a front vertical plate, the front joint comprises a butt joint plate, a connecting shaft and an inner ring gear, the butt joint plate is connected on the butt joint hole of the die, the butt joint plate is connected with the inner ring gear through the connecting shaft, the whole front joint is hinged on the front vertical plate through the connecting shaft, gear teeth of the inner ring gear are positioned on the inner side, and the inner ring gear is meshed with the outer ring gear. The driving part comprises an outer ring gear, a driving shaft, a turntable, a groove and friction bosses, wherein the outer ring gear is connected with the turntable through the driving shaft, the driving shaft is hinged to the front support, the front end face of the turntable is provided with a circular groove, a plurality of friction bosses are uniformly distributed on the groove, a plurality of rolling balls are uniformly distributed in the groove, the front end of each rolling ball is provided with a driving part, the rear end face of each driving part is provided with a structure form consistent with the turntable, a third spring is sleeved on the rotating shaft of each driving part, the driving parts are connected with a power source to drive the driving parts to rotate, and a third spring is sleeved on the driving shaft.
The two ends of the die are provided with butt joint holes which are respectively connected with the rear joint and the front joint. The paper ring is wound on the mould, finally is separated from the mould under the pushing of the device and is pushed to the rear end of the bracket by the clamping part until the demoulding is completed.
Further, the middle part of the connecting rod is provided with a limiting boss, a first spring is arranged between the limiting boss and the front frame edge of the main frame, and the clamping part always has a backward movement trend under the action of the first spring.
Further, the number of the friction bosses is 3-4, and the number of the rolling balls is consistent with the number of the friction bosses.
The beneficial effects of the invention are as follows:
the invention is used for the paper ring pipe-removing operation of the transformer in the production process of the transformer, and is provided with a plurality of groups of spring devices, controllable pulse torque is applied to a mould, the mould and the paper ring are gradually pushed to loosen, the clamping part clamps the paper ring with proper clamping force, when the paper ring and the mould are separated, the paper ring is pushed to leave the mould by the springs, and then the paper ring after pipe removal can be removed by removing the mould.
Drawings
FIG. 1 is a schematic illustration of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a partial exploded view of the present invention;
in the figure: 10. the hydraulic brake system comprises a bracket 11, a main frame 12, a rear vertical plate 13, a rear bracket 131, an end plate 132, a grille 133, a shaft hole 14, a front vertical plate 15, a front bracket 20, a clamping part 21, a sliding block 211, a vertical shaft 22, a pull rod 221, a limiting boss 23, a first spring 24, a pressing plate 241, a connecting rod 242, a spring piece 243, a pressing plate 25, a second spring 30, a driving part 31, a rear joint 32, a front joint 321, an abutting plate 322, a connecting shaft 323, an inner ring gear 33, a transmission part 331, an outer ring gear 332, a transmission shaft 333, a turntable 334, a groove 335, a friction boss 34, a rolling ball 35, a driving part 36, a third spring 40, a mould 41, an abutting hole 50 and a paper ring.
Description of the embodiments
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 to 4, the transformer insulation paper ring tube stripping machine comprises a bracket 10, a clamping part 20, a driving part 30, a die 40 and a paper ring 50, wherein the clamping part 20 is erected on the bracket 10 and clamps the paper ring 50, the clamping part 20 slides on the bracket 10, the driving part 30 is installed on the bracket 10 and connected with the die 40, and the paper ring 50 is wound on the die 40.
The bracket 10 comprises a main frame 11, a rear vertical plate 12, a rear bracket 13, a front vertical plate 14 and a front bracket 15, wherein the middle parts of the front end and the rear end of the main frame 11 are respectively provided with the rear vertical plate 12 and the front vertical plate 14, the rear bracket 13 is arranged on the rear vertical plate 12, the front bracket 15 is arranged on the front vertical plate 14, the driving part 30 is arranged on the front bracket 15, the rear bracket 13 comprises an end plate 131, a grille 132 and a shaft hole 133, the end plate 131 is arranged on the rear vertical plate 12, the end plate 131 is forwards connected with a plurality of conically arranged grilles 132, the front end of the grille 132 is connected with the shaft hole 133, and the rear joint 31 is arranged in the shaft hole 133.
The clamping part 20 comprises sliding blocks 21, pressing plates 22, first springs 23, pressing plates 24 and second springs 25, the sliding blocks 21 are four, two groups of sliding blocks are respectively arranged on the cross beams on the two sides of the main frame 11, the tops of the sliding blocks 21 are provided with vertical shafts 211, the pressing plates 24 are arranged on the vertical shafts 211, the pulling rods 22 are in an I shape, the four sliding blocks 21 are connected into a whole by the pulling rods 22, limiting bosses 221 are arranged in the middle of the pulling rods 22, the first springs 23 are arranged between the limiting bosses 221 and the front frame edge of the main frame 11, the clamping part 20 always has a backward movement trend under the action of the first springs 23, the pressing plates 24 are respectively arranged on the vertical shafts 211 on the left side and the right side, the pressing plates 24 comprise two connecting rods 241, spring pieces 242 and pressing pieces 243, the connecting rods 241 are respectively sleeved on the vertical shafts 211, the end parts of the connecting rods 241 are connected with the spring pieces 242, the pressing pieces 243 are uniformly distributed with a plurality of pressing pieces 243 in an arc shape, the pressing pieces 243 press paper rings 50, the pressing pieces 243 and the pressing pieces 243 are matched with the pressing pieces 243 to form proper pressing force on the paper rings 50, and the paper rings 50 are kept to clamp the paper rings 50. The second spring 25 is sleeved on the connecting rod 241, and the pressing plate 24 always has a tendency of pressing inwards under the action of the second spring 25, so that the paper ring 50 is kept pressed.
The driving part 30 comprises a rear joint 31, a front joint 32, a transmission member 33, a rolling ball 34, a driving member 35 and a third spring 36, wherein the rear joint 31 is hinged on a shaft hole 133, the rear joint 31 is connected with the rear end of a die 40, the front joint 32 is hinged on a front vertical plate 14, the front joint 32 comprises a butt joint plate 321, a connecting shaft 322 and an inner ring gear 323, the butt joint plate 321 is connected on a butt joint hole 41 of the die 40, the butt joint plate 321 is connected with the inner ring gear 323 through the connecting shaft 322, the whole front joint 32 is hinged on the front vertical plate 14 through the connecting shaft 322, gear teeth of the inner ring gear 323 are positioned on the inner side, and the inner ring gear 323 is meshed with the outer ring gear 331. The driving member 33 comprises an outer ring gear 331, a driving shaft 332, a turntable 333, grooves 334 and friction bosses 335, the outer ring gear 331 is connected with the turntable 333 through the driving shaft 332, the driving shaft 332 is hinged on the front support 15, the front end face of the turntable 333 is provided with a circular groove 334, a plurality of friction bosses 335 are uniformly distributed on the groove 334, the number of the friction bosses 335 is 3-4, a plurality of rolling balls 34 are uniformly distributed in the groove 334, the number of the rolling balls 34 is consistent with the number of the friction bosses 335, each time when the rolling balls 34 roll to the positions of the friction bosses 335, the rolling balls 34 cannot pass over the friction bosses 335 under the blocking of the friction bosses 335, or the turntable 333 is retracted under the action of the third springs 36 and the rolling balls 34 continue to rotate beyond the friction bosses 335, the front end of the rolling balls 34 is provided with a driving member 35, the rear end face of the driving member 35 is provided with a structure consistent with the turntable 333, the driving member 35 is sleeved with a third spring 36 on the rotating shaft of the driving member 35, the driving member 35 is connected with a power source, the driving member 332 is sleeved with a third spring 36, each time under the action of the two third springs 36, the rolling balls 34 and the rolling balls 34 are not completely separated from the friction bosses 34, and the rolling balls are completely separated from the molds 40 when the rolling balls are completely separated from the molds 34 and the molds 40 and the rolling balls are completely from the molds 40.
The die 40 has a butt hole 41 at both ends, and the butt hole 41 connects the rear joint 31 and the front joint 32, respectively.
The paper ring 50 is wound on the die 40, finally released from the die 40 by the pushing of the device and pushed toward the rear end of the holder 10 by the clamping portion 20 until the demolding is completed.
The working principle of the invention is as follows: first, the mold 40 for winding the paper ring 50 is installed between the rear joint 31 and the front joint 32, the clamping part 20 clamps the paper ring 50, and the clamping part 20 clamps the paper ring 50 with proper force under the action of the second spring 25 and the spring piece 242. Then, the driving member 35 is driven by a power source to rotate, the driving member 35 drives the rolling ball 34 to rotate between the turntable 33 and the driving member 35, when the rolling ball 34 touches the friction boss 335, according to two conditions of detachment of the paper ring 50 and the die 40, if the paper ring 50 and the die 40 are not detached, the paper ring 50 is clamped by the clamping part 20, the rotation resistance of the die 40 is large, at this time, the rolling ball 34 cannot push the die 40 to rotate through the friction boss 335, under the action of the two third springs 36, the turntable 333 and the driving member 35 are retreated, the rolling ball 34 continues to rotate through the friction boss 335, at this time, the die 40 is subjected to a pulse thrust which circularly occurs along with the continuous rotation of the driving member 35, each pulse thrust contributes to the paper ring 50 to the die 40 until the paper ring 50 and the die 40 are completely detached, at this time, the rolling ball 34 does not need to cross the friction boss 335, and the die 40 is pushed to rotate under the restriction of the friction boss 335. Meanwhile, in the process that the paper ring 50 and the mold 40 are separated under the action of the first spring 23, the first spring 23 pushes the clamping part 20 to have a backward movement trend, and applies a force to the paper ring 50 to assist the paper ring 50 to separate from the mold 40 until the paper ring 50 is completely separated from the mold 40, and the first spring 23 pushes the clamping part 20 to push the paper ring 50 backward out of the range of the mold 40. Subsequently, the power source is turned off, the die 40 is removed, and the paper ring 50 is removed from the mounting position of the die 40.
The above embodiments mainly illustrate the transformer insulation paper ring tube removing machine of the invention. While only limited embodiments and features thereof have been described, those skilled in the art will appreciate that the invention can be practiced in many other forms without departing from the spirit and scope thereof. Accordingly, the illustrated embodiments are to be considered as illustrative and not restrictive, and the invention may be embodied in various modifications and alternative forms without departing from the spirit or scope of the invention as defined in the appended claims.
Claims (1)
1. The utility model provides a transformer insulation paper circle takes off tub machine, including support (10), clamping part (20), drive division (30), mould (40) and paper circle (50), a serial communication port, clamping part (20) erect on support (10) and press from both sides tight paper circle (50), clamping part (20) slide on support (10), drive division (30) are installed on support (10) and are connected with mould (40), paper circle (50) coiling is on mould (40), support (10) include main frame (11), back riser (12), back support (13), preceding riser (14) and preceding riser (15), the front and back both ends middle part of main frame (11) has back riser (12) and preceding riser (14) respectively, install back support (13) on back riser (12), install preceding riser (15) on preceding riser (15), install drive division (30) on preceding riser (15), back support (13) include end plate (131), grid (132) and shaft hole (133), end plate (131) are installed on back riser (12) and are connected in the front end plate (132) taper shape, end plate (133) are connected in the shaft hole (132), the clamping part (20) comprises four sliding blocks (21), a pull rod (22), a first spring (23), a pressing plate (24) and a second spring (25), wherein the sliding blocks (21) are provided with four vertical shafts (211) which are respectively arranged on two lateral beams of the main frame (11), the pressing plate (24) is arranged on the vertical shafts (211), the pull rod (22) is I-shaped, the four sliding blocks (21) are connected into a whole by the pull rod (22), the first spring (23) is arranged between the middle part of the pull rod (22), the limiting boss (221) and the front frame edge of the main frame (11), the pressing plate (24) is provided with two vertical shafts (211) which are respectively arranged on the left side and the right side, the pressing plate (24) comprises a connecting rod (241), a spring piece (242) and a pressing piece (243), the connecting rod (241) is respectively sleeved on the vertical shafts (211), the end parts of the connecting rod (241) are connected with the plurality of the pressing pieces (243), the pressing piece (243) are arc-shaped, the pressing piece (243) is pressed into a ring (243), the pressing piece (50) is pressed, the second spring (25) is sleeved on the front joint (31), and the pressing piece (32) is driven by the driving piece (32) The rolling ball (34), the driving part (35) and the third spring (36), the rear joint (31) is hinged on the shaft hole (133), the rear joint (31) is connected with the rear end of the die (40), the front joint (32) is hinged on the front vertical plate (14), the front joint (32) comprises a butt plate (321), a connecting shaft (322) and an inner ring gear (323), the butt plate (321) is connected on a butt hole (41) of the die (40), the butt plate (321) is connected with the inner ring gear (323) through the connecting shaft (322), the whole front joint (32) is hinged on the front vertical plate (14) through the connecting shaft (322), the gear teeth of the inner ring gear (323) are positioned at the inner side, the inner ring gear (323) is meshed with the outer ring gear (331), the driving part (33) comprises the outer ring gear (331), a transmission shaft (332), a rotary table (333), grooves (334) and friction bosses (335), the outer ring gear (331) are connected with the rotary table (333), the transmission shaft (332) is hinged on the front bracket (15), the grooves (334) are provided with grooves (334) on the front end face of the rotary table (333), the friction bosses (3) are distributed uniformly, and the friction bosses (3-4), the number of the rolling balls (34) is consistent with that of the friction bosses (335), a plurality of rolling balls (34) are uniformly arranged in the grooves (334), the front ends of the rolling balls (34) are provided with driving members (35), the rear end faces of the driving members (35) are provided with structural forms consistent with the turntables (333), a third spring (36) is sleeved on the rotating shaft of the driving members (35), and the driving members (35) are connected with a power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458539.6A CN114783706B (en) | 2022-04-28 | 2022-04-28 | Insulating paper ring of transformer takes off pipe machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210458539.6A CN114783706B (en) | 2022-04-28 | 2022-04-28 | Insulating paper ring of transformer takes off pipe machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114783706A CN114783706A (en) | 2022-07-22 |
| CN114783706B true CN114783706B (en) | 2023-10-27 |
Family
ID=82432821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210458539.6A Active CN114783706B (en) | 2022-04-28 | 2022-04-28 | Insulating paper ring of transformer takes off pipe machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114783706B (en) |
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| KR800001988Y1 (en) * | 1978-10-02 | 1980-12-12 | 김병익 | Paper bobbin forming apparatus with thermosetting plastics |
| KR20130114853A (en) * | 2012-04-10 | 2013-10-21 | 이대규 | Mold for paper container forming, and forming device thereof |
| CN203739328U (en) * | 2014-03-06 | 2014-07-30 | 枣阳天立包装实业有限公司 | Automatic drum winding machine for fiber drum |
| CN107756871A (en) * | 2017-11-01 | 2018-03-06 | 浙江新德宝机械有限公司 | Paper tube forming machine structure |
| CN207496081U (en) * | 2017-11-01 | 2018-06-15 | 浙江新德宝机械有限公司 | Paper tube forming machine structure |
| CN108943876A (en) * | 2018-09-25 | 2018-12-07 | 瑞安市康奇机械有限公司 | A kind of paper cap manufacturing equipment |
| CN108943877A (en) * | 2018-10-01 | 2018-12-07 | 黄承亮 | A kind of paper tube ontology bottom closing device |
| CN208760094U (en) * | 2018-09-25 | 2019-04-19 | 瑞安市康奇机械有限公司 | A kind of paper cap manufacturing equipment |
| CN208760093U (en) * | 2018-09-25 | 2019-04-19 | 瑞安市康奇机械有限公司 | Paper circle molding machine |
| CN109760369A (en) * | 2019-02-04 | 2019-05-17 | 浏阳市博创花炮科技机械有限公司 | A kind of improved full-automatic fireworks paper tube rotary machine |
| CN209141529U (en) * | 2018-11-29 | 2019-07-23 | 江西省力信机械设备有限公司 | A kind of paper tube production double end noise reduction bottoming machine |
| CN209766251U (en) * | 2019-04-30 | 2019-12-10 | 常州市英中电气有限公司 | Demoulding equipment for insulating paper cylinder |
| CN111376443A (en) * | 2020-03-16 | 2020-07-07 | 林冰莺 | Auxiliary demolding device for injection mold and operation method of auxiliary demolding device |
| CN212525699U (en) * | 2020-06-08 | 2021-02-12 | 张金忠 | Wafer barrel forming die |
| CN114242443A (en) * | 2021-11-09 | 2022-03-25 | 天威保变（秦皇岛）变压器有限公司 | Large transformer integral sleeved insulating paper tape winding device and using method |
-
2022
- 2022-04-28 CN CN202210458539.6A patent/CN114783706B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR800001988Y1 (en) * | 1978-10-02 | 1980-12-12 | 김병익 | Paper bobbin forming apparatus with thermosetting plastics |
| KR20130114853A (en) * | 2012-04-10 | 2013-10-21 | 이대규 | Mold for paper container forming, and forming device thereof |
| CN203739328U (en) * | 2014-03-06 | 2014-07-30 | 枣阳天立包装实业有限公司 | Automatic drum winding machine for fiber drum |
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| CN209766251U (en) * | 2019-04-30 | 2019-12-10 | 常州市英中电气有限公司 | Demoulding equipment for insulating paper cylinder |
| CN111376443A (en) * | 2020-03-16 | 2020-07-07 | 林冰莺 | Auxiliary demolding device for injection mold and operation method of auxiliary demolding device |
| CN212525699U (en) * | 2020-06-08 | 2021-02-12 | 张金忠 | Wafer barrel forming die |
| CN114242443A (en) * | 2021-11-09 | 2022-03-25 | 天威保变（秦皇岛）变压器有限公司 | Large transformer integral sleeved insulating paper tape winding device and using method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114783706A (en) | 2022-07-22 |
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