CN219705287U - Automatic cutting device for large hydroelectric generator stator bar wrapping slot liner paper - Google Patents

Automatic cutting device for large hydroelectric generator stator bar wrapping slot liner paper Download PDF

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Publication number
CN219705287U
CN219705287U CN202320577958.1U CN202320577958U CN219705287U CN 219705287 U CN219705287 U CN 219705287U CN 202320577958 U CN202320577958 U CN 202320577958U CN 219705287 U CN219705287 U CN 219705287U
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China
Prior art keywords
cutting
feeding
cutting device
hydroelectric generator
stator bar
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CN202320577958.1U
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Chinese (zh)
Inventor
许梦浩
李文金
秦风斌
匡润
包伟民
金龙兵
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China Yangtze Power Co Ltd
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China Yangtze Power Co Ltd
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Priority to CN202320577958.1U priority Critical patent/CN219705287U/en
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Abstract

The automatic cutting device for the large hydroelectric generator stator bar wrapping slot liner paper is characterized in that two feeding rollers which are arranged up and down are arranged on a feeding device, the feeding rollers are driven by a feeding motor, a belt conveying material passes through and contacts the two feeding rollers, a rotating shaft of one of the two feeding rollers is connected with an encoder, a material feeding sensor and a cutting knife which is controlled to move up and down are arranged on a cutting device, and the material to be cut is cut off when the cutting knife moves down to the limit. Whether the current cutting knife has slot lining paper is detected by the feeding sensor, the time for feeding is recorded by the moment of signal change of the feeding sensor, the angular speed of the feeding roller is detected by the encoder, the angular speed is further converted into the linear speed for feeding, the length of the fed material is obtained by calculating the time of feeding, the precise cutting action can be obtained by the high-precision characteristic of the screw nut transmission, the cutting position of the slot lining paper is precise and the cutting is neat, and compared with manual cutting, the cutting quality and the cutting efficiency can be greatly improved.

Description

Automatic cutting device for large hydroelectric generator stator bar wrapping slot liner paper
Technical Field
The utility model relates to the technical field of manufacturing and maintenance of hydroelectric generators, in particular to an automatic cutting device for large-sized hydroelectric generator stator bar wrapping slot liner paper.
Background
When the generator stator is in a down line, the size of the iron core groove is slightly larger than that of the wire rod due to the problem of assembly precision, and a gap is reserved between the iron core and the wire rod. The gap may cause insufficient contact between the bar and the core, increase contact resistance, and may cause problems such as discharge of the bar to the core. In order to fill gaps between the iron cores and the bars, semiconductor putty is generally adopted for shaping, the semiconductor putty with a certain thickness is uniformly coated on the slot lining paper, the bars are wrapped by the slot lining paper, and the bars are extruded through the iron cores during wire drawing, so that the semiconductor putty fully fills gaps between the iron cores and the bars, and the slot potential is reduced.
The existing device for wrapping the slot paper on the stator bar of the water turbine is clumsy and has low automation degree, for example, chinese patent document CN 213637407U describes a special device for wrapping the slot paper on the stator bar of a large-scale hydroelectric generator, a sliding rail is arranged on a base and is in sliding connection with a scraper bracket, and a scraper blade is fixed on the scraper bracket; a three-fold type fixed bottom plate is arranged on the base and is positioned below the scraping blade; the two ends of the three-fold fixed bottom plate are provided with wire rod clamping grooves which are fixed on the base.
The device mainly carries out the operation of scraping glue and winding bar parcel to the package groove paper through the device frock, at the preface of scraping glue and winding bar, still need measure the process of cutting out and unloading to the package groove paper, make the whole process still need more manual work like this, the manual work is cut out and is needed to measure length with measuring tool again and cut, but often winding bar length is longer, and the workman is inconvenient and often numerical value mistake easily when cutting, consumes great time and energy.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the automatic cutting device for the wrapping paper of the stator bar of the large-sized hydroelectric generator, which can feed and cut the special device for the wrapping paper of the stator bar of the hydroelectric generator, and can greatly improve the cutting efficiency and the cutting quality.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a large-scale hydroelectric generator stator bar package groove lining paper automatic cutting device, which comprises a bracket, be equipped with material feeding unit and cutting device on the support along the feeding direction in proper order, cutting device's exit end is equipped with the stock guide, be equipped with two feed rolls of arranging from top to bottom on the material feeding unit, the feed roll is driven by the feeding motor, take the conveying material to pass between two feed rolls and contact with it, the pivot and the encoder of one of two feed rolls are connected, be equipped with on the cutting device and cut the cutter to material sensor and controlled up-and-down motion, cut the material that will cut when cutting the cutter moves down to the limit.
The lower part of the cutting knife is provided with a cutting bottom plate, the cutting edge of the cutting bottom plate, which is opposite to the cutting knife, is provided with a cutting knife groove, the feeding sensor is positioned on the cutting bottom plate, and the feeding sensor is positioned on one side of the cutting knife for discharging.
Two guide cylinders are arranged on two sides of the support, the guide columns are in sliding contact with the guide cylinders, and the guide columns penetrate through the top end of the support and are fixedly connected with the top of the cutting knife.
The support plate is arranged between the two guide cylinders, the support plate is fixedly connected with the top of the support, a nut in rotary connection is arranged on the support plate, a screw shaft is arranged in the nut, the screw shaft penetrates through the support downwards, the end part of the screw shaft is in rotary connection with the top of the cutting knife, and the nut is controlled to rotate.
The outer wall of the nut is provided with a driven gear which is fixedly connected, the driven gear is meshed with a driving gear, and the driving gear is driven by a cutting motor.
According to the automatic cutting device for the slot liner paper of the stator bar package of the large hydroelectric generator, whether the slot liner paper exists in the current cutting knife is detected through the feeding sensor, the feeding time is recorded through the time of signal change of the feeding sensor, the angular speed of the feeding roller is detected through the encoder so as to be converted into the linear speed of feeding, the feeding time is combined for calculation to obtain the length of the fed material, and when the feeding length is equal to a preset value, the feeding is stopped and the cutting knife is controlled to cut off the material; the screw shaft is driven to lift by the rotation of the nut, so that the cutting knife is driven to lift, and accurate cutting action can be obtained by the high-precision characteristic of the screw nut transmission, so that the cutting position of the slot lining paper is accurate and the cutting is neat, and compared with manual cutting, the cutting quality and the cutting efficiency can be greatly improved.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a front elevational view of the structure of the present utility model;
FIG. 3 is a side view of the structure of the present utility model;
FIG. 4 is a cross-sectional view of D-D of FIG. 3;
fig. 5 is an enlarged partial schematic view of fig. 1.
In the figure: the device comprises a bracket 1, a feeding device 2, a cutting device 3, a cutting bottom plate 31, a guide cylinder 32, a guide column 33, a supporting plate 34, a nut 35, a screw shaft 36, a driven gear 37, a driving gear 38, a cutting motor 39, a material guiding plate 4, a feeding motor 5, a cutting knife 6, a feeding sensor 7, an encoder 8, slot liner 9, a feeding roller 10 and a cutter slot 11.
Detailed Description
As shown in fig. 1-5, the automatic cutting device for the large hydroelectric generator stator bar wrapping slot liner paper comprises a bracket 1, wherein a feeding device 2 and a cutting device 3 are sequentially arranged on the bracket 1 along the feeding direction, a material guide plate 4 is arranged at the outlet end of the cutting device 3, two feeding rollers 10 which are arranged up and down are arranged on the feeding device 2, the feeding rollers 10 are driven by a feeding motor 5, a belt conveying material passes through and contacts the two feeding rollers 10, the rotating shaft of one of the two feeding rollers 10 is connected with an encoder 8, a material sensor 7 and a cutting knife 6 which is controlled to move up and down are arranged on the cutting device 3, and the material to be cut is cut off when the cutting knife 6 moves down to a limit.
The current cutting knife 6 is detected by the feeding sensor 7 whether the slot liner paper 9 exists or not, the feeding time is recorded by the time of signal change of the feeding sensor 7, the angular speed of the feeding roller 10 is detected by the encoder 8 and then converted into the feeding linear speed, the feeding time is combined to calculate to obtain the length of the fed material, and when the feeding length is equal to a preset value, the feeding is stopped and the cutting knife 6 is controlled to cut off the material.
The bottom plate 31 is arranged below the cutting knife 6, the knife edge of the bottom plate 31 opposite to the cutting knife 6 is provided with a knife slot 11, the material sensor 7 is positioned on the bottom plate 31, and the material sensor 7 is positioned at one side of the material beside the cutting knife 6.
Through setting up material sensor 7 in ejection of compact one side, can detect whether the incoming material and record incoming material time, can also detect whether to accomplish and cut, when cutting successfully, there is the change of signal pulse to material sensor 7.
Two guide cylinders 32 are arranged on two sides of the support 1, guide columns 33 are in sliding contact with the guide cylinders 32, and the guide columns 33 penetrate through the top end of the support 1 and are fixedly connected with the top of the cutting knife 6.
A supporting plate 34 is arranged between the two guide cylinders 32, the supporting plate 34 is fixedly connected with the top of the bracket 1, a nut 35 which is rotationally connected is arranged on the supporting plate 34, a screw shaft 36 is arranged in the nut 35, the screw shaft 36 downwards penetrates through the bracket 1, the end part of the screw shaft 36 is rotationally connected with the top of the cutting knife 6, and the nut 35 is controlled to rotate.
The screw shaft 36 is driven to lift by the rotation of the nut, so that the cutting knife 6 is driven to lift, and the precise cutting action can be obtained by the high-precision characteristic of the screw nut transmission, so that the cutting position of the slot lining paper is precise and the cutting is tidy, and the guiding action of the guide post 33 and the guide cylinder 32 is assisted, so that the cutting quality and the cutting efficiency can be greatly improved compared with manual cutting.
The outer wall of the nut 35 is provided with a driven gear 37 fixedly connected, the driven gear 37 is meshed with a driving gear 38, and the driving gear 38 is driven by a cutting motor 39.
The cutting motor 39 uses a pulse servo motor, and the motor speed and the motor position are controlled by high-frequency pulses, so that the control is simple and the precision is high, and the cutting procedure has high cost performance.

Claims (5)

1. Automatic cutting device of large-scale hydroelectric generator stator bar package groove lining paper, characterized by: including support (1), be equipped with material feeding unit (2) and cutting device (3) on support (1) in proper order along the feed direction, the exit end of cutting device (3) is equipped with stock guide (4), be equipped with two feed rolls (10) of arranging from top to bottom on material feeding unit (2), feed roll (10) are driven by feed motor (5), take the conveying material to pass between two feed rolls (10) and contact with it, the pivot and the encoder (8) of one of them of two feed rolls (10) are connected, be equipped with on cutting device (3) to material sensor (7) and controlled up-and-down motion cut knife (6), cut off the material that will cut when cutting knife (6) downward movement arrives the limit.
2. The automatic cutting device for the large hydroelectric generator stator bar wrapping slot liner paper according to claim 1, wherein a cutting bottom plate (31) is arranged below the cutting knife (6), a knife edge of the cutting bottom plate (31) opposite to the cutting knife (6) is provided with a cutter slot (11), the feeding sensor (7) is arranged on the cutting bottom plate (31), and the feeding sensor (7) is arranged on one side of the cutting knife (6) for discharging.
3. The automatic cutting device for the large hydroelectric generator stator bar wrapping slot liner paper according to claim 2, wherein two guide cylinders (32) are arranged on two sides of the support (1), the guide cylinders (33) are in sliding contact with the guide cylinders (32), and the guide cylinders (33) penetrate through the top end of the support (1) and are fixedly connected with the top of the cutting knife (6).
4. The automatic cutting device for the large hydroelectric generator stator bar wrapping slot liner paper according to claim 3, wherein a supporting plate (34) is arranged between the two guide cylinders (32), the supporting plate (34) is fixedly connected with the top of the support (1), a nut (35) which is rotationally connected is arranged on the supporting plate (34), a screw shaft (36) is arranged in the nut (35), the screw shaft (36) downwards penetrates through the support (1) and the end part of the screw shaft is rotationally connected with the top of the cutting knife (6), and the nut (35) is controlled to rotate.
5. The automatic cutting device for the large hydroelectric generator stator bar slot-wrapping paper according to claim 4, wherein a driven gear (37) is fixedly connected to the outer wall of the nut (35), the driven gear (37) is meshed with a driving gear (38), and the driving gear (38) is driven by a cutting motor (39).
CN202320577958.1U 2023-03-22 2023-03-22 Automatic cutting device for large hydroelectric generator stator bar wrapping slot liner paper Active CN219705287U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320577958.1U CN219705287U (en) 2023-03-22 2023-03-22 Automatic cutting device for large hydroelectric generator stator bar wrapping slot liner paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320577958.1U CN219705287U (en) 2023-03-22 2023-03-22 Automatic cutting device for large hydroelectric generator stator bar wrapping slot liner paper

Publications (1)

Publication Number Publication Date
CN219705287U true CN219705287U (en) 2023-09-19

Family

ID=88001168

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320577958.1U Active CN219705287U (en) 2023-03-22 2023-03-22 Automatic cutting device for large hydroelectric generator stator bar wrapping slot liner paper

Country Status (1)

Country Link
CN (1) CN219705287U (en)

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