Binding device for shielding net of mutual inductor

Abstract

The utility model discloses a wrapping device for a shielding net of a mutual inductor, and belongs to the technical field of manufacturing of electronic mutual inductors. Aiming at the problems that traditional manual binding is low in efficiency and inaccurate in layer number control, the pneumatic driving and automatic counting technology is adopted, and the device comprises an air source, a foot switch, a pneumatic motor, a rotor blade, an elastic rubber sleeve and other core assemblies. The pneumatic motor drives the rotor blades to rotate through compressed air, and the shielding net is driven to achieve automatic winding of the insulation crepe paper. The elastic rubber sleeve can adapt to shielding nets with different diameters, so that the universality is improved; the paper guide groove standardizes the paper path and prevents deviation; and the counter accurately records the number of binding layers through magnetic induction, so that the process consistency is ensured. Stepless speed regulation is achieved through the regulating valve, starting and stopping are controlled in combination with the pedal switch, the labor intensity of workers is remarkably reduced, and the production efficiency and the product quality are improved. The device is compact in structure, easy and convenient to operate and suitable for mass production scenes of electronic transformers, and has high industrial practical value.

Description

A device for wrapping shielding mesh for current transformers Technical Field

[0001] This disclosure belongs to the field of auxiliary tooling technology in the manufacturing process of electronic instrument transformers, and specifically relates to an instrument transformer shielding mesh wrapping device. Background Technology

[0002] In the manufacturing process of electronic instrument transformers, a combined shielding mesh is required. This combined shielding mesh consists of three meshes wrapped and welded together. Its function is to shield against tip discharge and prevent uneven electric field from causing partial discharge defects in the product. Currently, the work of wrapping the shielding mesh mainly involves workers using insulating crepe paper to wrap layer by layer according to process requirements, silently counting the number of layers. With the increase in product orders, the daily workload of workers is very heavy, making it impossible to complete the wrapping task. Moreover, over-wrapping or under-wrapping often occurs, seriously affecting production efficiency and product quality. Summary of the Invention

[0003] The technical problem solved by this disclosure is to provide a device for wrapping the shielding mesh of a current transformer, which can directly wrap the insulating crepe paper onto the shielding mesh according to the required number of wrapping layers, reducing labor time and labor intensity, not generating heat during long-term operation, with simple structure, small size, light weight, and improved production efficiency and product quality.

[0004] To achieve the above objectives, this disclosure adopts the following technical solution: a transformer shielding mesh wrapping device, wherein an air source is connected to a foot switch, the foot switch is connected to an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are fixed to the air inlet and air outlet of a pneumatic motor through mounting holes on the side wall, and regulating valves are respectively installed on the air inlet and air outlet, the regulating valves are used to regulate the input and output of gas, a bracket is provided below the output end of the pneumatic motor, a rotor blade is installed on the output shaft of the pneumatic motor, a magnet is provided on the outer wall of the rotor blade near the pneumatic motor, the magnet is used for sensing by a detector; an elastic sleeve is provided on the end of the rotor blade away from the pneumatic motor, the elastic sleeve covers half of the rotor blade, the shielding mesh is covered on the elastic sleeve, a counter is provided on the side wall, the counter senses the number of rotations of the rotor blade through a detector, and a paper guide groove is provided on the side wall of the device for guiding insulating crepe paper to be layered and wrapped along a preset path.

[0005] Preferably, the inlet of the paper guide groove is provided with a hook for fixing the starting end of the insulating crepe paper.

[0006] Preferably, the regulating valve is a manual rotary valve, which is used by the operator to adjust the speed in real time according to process requirements.

[0007] Preferably, the thickness of the elastic sleeve is replaceable to adapt to the wrapping requirements of shielding meshes of different diameters.

[0008] The beneficial effects of this disclosure are as follows: This disclosure provides a device for wrapping a transformer shielding mesh. By setting a foot switch, gas input and output can be effectively realized; by setting a base, the entire device can be effectively supported; by setting a pneumatic motor, the pressure energy of compressed air can be converted into rotational mechanical energy; by setting rotor blades, insulating crepe paper can be wound and wrapped; by setting a probe, the rotation of the rotor blades can be effectively sensed; by setting a counter, the number of wrapping layers can be accurately determined; by setting a paper guide groove, the layering and wrapping of insulating crepe paper can be effectively standardized to prevent deviation. Attached Figure Description

[0009] Figure 1 is a perspective view of a current transformer shielding mesh wrapping device disclosed herein.

[0010] Figure 2 is a front view of the pneumatic motor structure in this disclosure.

[0011] Figure 3 is a side view of the pneumatic motor structure in this disclosure.

[0012] Figure 4 is a front view of the rotor blade structure in this disclosure.

[0013] Figure 5 is a side view of the rotor blade structure in this disclosure.

[0014] Figure 6 is a front view of the paper feed slot structure in this disclosure.

[0015] Figure 7 is a top view of the paper feed slot structure in this disclosure.

[0016] Figure 8 is a front view of the foot switch structure in this disclosure.

[0017] Figure 9 is a top view of the foot switch structure in this disclosure.

[0018] Figure 10 is a schematic diagram of the sidewall structure in this disclosure.

[0019] The following components are shown in the diagram: 1. Air source; 2. Air inlet pipe; 3. Air outlet pipe; 4. Foot switch; 5. Base; 6. Side wall; 7. Mounting hole; 8. Pneumatic motor; 9. Regulating valve; 10. Rotor blade; 11. Magnet; 12. Elastic sleeve; 13. Paper guide groove; 14. Bracket; 15. Detector; 16. Counter; 17. Hook; 18. Shielding mesh; 19. Insulating crepe paper. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] In a specific implementation, this disclosure provides a transformer shielding mesh wrapping device, including an air source 1 for supplying energy throughout the operation; a foot switch 4 is installed at one end of the air source 1 for opening and closing the air source 1; an inlet pipe 2 and an outlet pipe 3 are connected to the foot switch 4 for gas input and output; the inlet pipe 2 and outlet pipe 3 are fixed to the inlet and outlet of a pneumatic motor 8 through mounting holes 7 on the side wall 6; regulating valves 9 are installed on the inlet and outlet respectively for regulating the gas input and output to achieve stepless speed regulation to meet operational requirements; a bracket 14 is installed below the output end of the pneumatic motor 8 for supporting the pneumatic motor 8; rotor blades 10 are installed on the output shaft of the pneumatic motor 8, and the rotor blades 10, under the action of compressed air, pass through the pneumatic motor 8 to realize the conversion of pressure energy and rotational mechanical energy. The rotor blade 10 has a magnet 11 on its outer wall near the pneumatic motor 8. The magnet 11 is used for sensing by the detector 15. An elastic sleeve 12 is provided on the rotor blade 10 away from the pneumatic motor 8. The elastic sleeve 12 covers half of the rotor blade 10, and the shielding mesh 18 is covered on the elastic sleeve 12. This can reduce the wear of the rotor blade 10 and can accommodate shielding meshes 18 of different diameters. A counter 16 is provided on the upper side wall 6 and is fixed to the side wall 6 through the mounting hole 7. The counter 16 is used to count the number of layers of shielding mesh 18. The wire of the counter 16 extends along the inner wall of the side wall 6 and the base 5 to the rotor blade 10 and connects to the detector 15. The distance between the detector 15 and the rotor blade 10 is set according to the sensing distance value. By sensing the magnet 11 on the rotor blade 10, the detector transmits the number of layers of shielding mesh to the counter 16.

[0022] In actual use, the transformer shielding mesh wrapping device is placed on a horizontal operating table, air source 1 is connected, the parameters of counter 16 are set according to process requirements, regulating valve 9 is adjusted, and a suitable airflow pressure is selected. The rotor blades 10 are installed on the output shaft of the pneumatic motor 8. An elastic sleeve 12 of appropriate thickness is selected and placed on the rotor blades 10. The distance between detector 15 and magnet 11 is adjusted to be within the effective detection range. Insulating crepe paper 19 is hung on hook 17, and the shielding mesh 18 is placed over the elastic sleeve 12, ensuring that the area to be wrapped corresponds to the paper guide groove 13. Then, the wire is pulled... One end of the lower insulating crepe paper 19 is inserted through the paper guide groove 13 and stuck onto the shielding mesh 18 that needs to be wrapped. Step on the foot switch 4, and gas enters the cylinder of the pneumatic motor 8 through the air inlet pipe 2. The pressure energy of the compressed air is converted into rotational mechanical energy by the rotating blade 10, so that the insulating crepe paper 19 is wrapped on the shielding mesh 18 in layers. When the counter reaches the number of wrapping layers required by the process, the foot switch is released, the gas is discharged through the air outlet pipe 3, the pneumatic motor 8 stops operating, the rotor blade 10 stops rotating, the insulating crepe paper 19 is cut and stuck, and the wrapping of the transformer shielding mesh 18 is completed.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed. The scope of protection of this disclosure is defined by the appended claims and their equivalents.

Claims

1. A device for wrapping a shielding mesh for a current transformer, characterized in that, The air source (1) is connected to the foot switch (4), and the foot switch (4) is connected to the air inlet pipe (2) and the air outlet pipe (3). The air inlet pipe (2) and the air outlet pipe (3) are fixed to the air inlet and air outlet of the pneumatic motor (8) through the mounting holes (7) on the side wall (6). The air inlet and air outlet are respectively equipped with regulating valves (9), which are used to regulate the input and output of gas. A bracket (14) is provided below the output end of the pneumatic motor (8). A rotor blade (10) is installed on the output shaft of the pneumatic motor (8). A magnet (11) is provided on the outer wall of the rotor blade (10) near the pneumatic motor (8). The magnet (11) is used for sensing by the detector (15). An elastic sleeve (12) is provided on the end of the rotor blade (10) away from the pneumatic motor (8). The elastic sleeve (12) covers half of the rotor blade (10). A shielding net (18) is placed on the elastic sleeve (12). A counter (16) is provided on the side wall (6). The counter (16) senses the number of rotations of the rotor blade (10) through the detector (15). A paper guide groove (13) is provided on the side wall (6) of the device to guide the insulating crepe paper (19) to be layered and wrapped along a preset path.

2. The transformer shielding screen wrapping apparatus of claim 1, wherein, The paper guide groove (13) is provided with a hook (17) at the entrance for fixing the starting end of the insulating crepe paper (19).

3. The transformer shielding mesh wrapping apparatus of claim 1, wherein, The regulating valve (9) is a manual knob valve, which is used by the operator to adjust the speed in real time according to the process requirements.

4. The transformer shielding mesh wrapping device according to claim 1, characterized in that, The thickness of the elastic sleeve (12) is replaceable to accommodate the wrapping requirements of shielding nets (18) of different diameters.

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