CN210928109U

CN210928109U - Conductive brush applied to plasma equipment

Info

Publication number: CN210928109U
Application number: CN201921804665.2U
Authority: CN
Inventors: 彭志生
Original assignee: Foshan Aochuang Automation Equipment Co ltd
Current assignee: Foshan Aochuang Automation Equipment Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-07-03
Anticipated expiration: 2029-10-26

Abstract

A conductive brush applied to plasma equipment comprises a rotary nozzle assembly arranged on the plasma equipment, wherein the rotary nozzle assembly comprises a rotor protective shell, a conductive gasket is arranged on the rotor protective shell, the conductive brush is arranged on the conductive gasket and comprises a metal coil body, a cylinder is arranged in the metal coil body, and the middle part of the cylinder is fixed with the metal coil body through soldering tin; the upper part of the cylinder is a fixed end, and a welding surface is arranged on the fixed end; the lower part of the cylinder is provided with a movable end which is a contact head, a spring is arranged between the contact head and the cylinder, and the contact head is movably and telescopically arranged on the metal coil body. The utility model discloses an add electrically conductive brush at rotatory nozzle assembly, the stiff end and the plasma equipment fixed connection of electrically conductive brush, the expansion end and the electrically conductive packing ring of electrically conductive brush contact, effectively reduce the electric current in the bearing of flowing through, finally realize extension bearing performance and life-span, effectively solve because bearing wearing and tearing cause the noise scheduling problem.

Description

Conductive brush applied to plasma equipment

Technical Field

The utility model relates to a surface treatment technical field, particularly, concretely relates to be applied to conductive brush of plasma equipment.

Background

The conventional plasma surface treatment device forms a plasma flame speed effect on a treated workpiece after being rotated so as to meet the requirement of surface treatment. Chinese patent document No. CN104640339A discloses a plasma surface treatment device, which comprises a motor, a plasma gun head, an electrode and an inner core, wherein an output shaft of the motor is a hollow shaft; the inner core is composed of a hollow cylinder and a transverse plate positioned at the rear end of the hollow cylinder, and the transverse plate and the hollow cylinder are integrally arranged; the hollow cylinder is positioned in the hollow shaft; the transverse plate is fixedly arranged on a rear cover of the motor; the air pipe is introduced into the inner core through the air pipe hole on the transverse plate; the power line is connected to the electrode through the inner core; the plasma gun head is connected with the hollow shaft, the electrode is covered by the plasma gun head, and the plasma gun head is provided with a nozzle with an inclined head. The plasma gun head is directly driven to rotate by the hollow shaft of the motor, so that the loss of a transmission link can be reduced compared with the traditional contact transmission of a synchronous belt or a gear and the like, and the plasma gun head is simple in structure, few in parts and low in cost. However, since the plasma gun head needs to be driven by a bearing when rotating, the current can damage the bearing and increase the noise of the product as the use time goes on. Therefore, further improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, low in manufacturing cost improve the assembly outside rotor motor inner bearing's reliability and a conductive brush of being applied to plasma equipment of working life to solve above-mentioned problem.

The utility model provides a be applied to plasma equipment's electrically conductive brush, including setting up rotatory nozzle subassembly on plasma equipment, rotatory nozzle subassembly includes rotor protecting sheathing, is provided with the conductive gasket on the rotor protecting sheathing, be equipped with the bottom plate fixing base fixed with it cooperation in the rotor protecting sheathing, be provided with the stator main shaft on the bottom plate fixing base, be equipped with drive circuit board, rotor and bearing on the stator main shaft in proper order, constitute external rotor motor structure, its structural feature is that, conductive brush is provided with on the conductive gasket, conductive brush includes the metal coil body, and the metal coil body is hollow cylindrical, is provided with the cylinder in the metal coil body, and the middle part of cylinder is fixed through soldering tin with the metal coil body; the upper part of the cylinder is a fixed end, and a welding surface is arranged on the fixed end; the welding face and plasma equipment fixed connection, the columniform lower part is provided with the expansion end, the expansion end is the contact, is provided with the spring between contact and the cylinder, and the contact activity is flexible to be set up on the metal coil body.

Furthermore, two ends of the spring are respectively welded and fixed with the contact head and the cylinder.

Further, the length of the contact is smaller than that of the metal coil body.

Further, the sum of the lengths of the contact head and the cylinder is larger than the length of the metal coil body.

Furthermore, the conductive washer is matched and fixed with a rotor of the outer rotor motor, the rotor of the outer rotor motor drives the conductive washer to rotate, and the contact head is in contact with the conductive washer.

The utility model discloses an add electrically conductive brush at rotatory nozzle assembly, the stiff end and the plasma equipment fixed connection of electrically conductive brush, the expansion end and the electrically conductive packing ring of electrically conductive brush contact, form parallel circuit. According to the parallel circuit principle, the resistance is low in large current, most of current enters the conductive brush through the conductive gasket at the moment, the current flowing through the bearing is effectively reduced, the service performance and the service life of the bearing are finally prolonged, and the problems of noise and the like caused by bearing abrasion are effectively solved.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure in a use state according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a conductive brush according to an embodiment of the present invention.

Fig. 3 is an exploded schematic view of a conductive brush according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a conductive gasket according to an embodiment of the present invention.

Detailed Description

Fig. 1-4 show that an embodiment of the utility model provides a be applied to conductive brush 2 of plasma equipment, including setting up rotatory nozzle subassembly 1 on plasma equipment, rotatory nozzle subassembly 1 includes rotor protecting sheathing 1.1, is provided with conductive gasket 3 on the rotor protecting sheathing 1.1, be equipped with the fixed bottom plate fixing base of cooperation with it in the rotor protecting sheathing 1.1, be provided with stator main shaft 1.2 on the bottom plate fixing base, be equipped with drive circuit board, rotor and bearing on the stator main shaft 1.2 in proper order, constitute external rotor electric machine structure, conductive gasket is fixed with external rotor electric machine's rotor cooperation, and external rotor electric machine's rotor drive conductive gasket 3 rotates, and contact 2.22 contacts with conductive gasket 3.

The bearing is a rolling bearing, the rolling bearing generally consists of an inner ring, an outer ring, a rolling body and a retainer, the inner ring is used for being matched with the stator main shaft 1.2, the outer ring and the rotor rotate together, and the electric conduction function is realized.

The conductive washer 3 is provided with a conductive brush 2, the conductive brush 2 comprises a metal coil body 2.1, the metal coil body is in a hollow cylinder 2.2 shape, a cylinder 2.2 is arranged in the metal coil body, and the middle part of the cylinder 2.2 is fixed with the metal coil body through soldering tin; the upper part of the cylinder 2.2 is a fixed end, and a welding surface 2.21 is arranged on the fixed end; the welding surface 2.21 is fixedly connected with the plasma equipment,

the lower part of the cylinder 2.2 is provided with a movable end, the movable end is a contact 2.22, the length of the contact 2.22 is less than that of the metal coil body, and the sum of the lengths of the contact 2.22 and the cylinder 2.2 is greater than that of the metal coil body. A spring 2.3 is arranged between the contact 2.22 and the cylinder 2.2, and two ends of the spring 2.3 are respectively welded and fixed with the contact 2.22 and the cylinder 2.2. The contact head 2.22 is movably and telescopically arranged on the metal coil body. The movable end of the brush is in contact with the conductive washer 3 to form a parallel circuit. According to the parallel circuit principle, the resistance is low in large current, most of the current enters the conductive brush 2 through the conductive gasket 3 at the moment, the current flowing through the bearing is effectively reduced, the service performance and the service life of the bearing are finally prolonged, and the problems of noise and the like caused by bearing abrasion are effectively solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A conductive brush applied to plasma equipment comprises a rotary nozzle assembly arranged on the plasma equipment, wherein the rotary nozzle assembly comprises a rotor protective shell, a conductive gasket is arranged on the rotor protective shell, a bottom plate fixing seat matched and fixed with the rotor protective shell is arranged in the rotor protective shell, a stator main shaft is arranged on the bottom plate fixing seat, a driving circuit board, a rotor and a bearing are sequentially arranged on the stator main shaft to form an outer rotor motor structure, and the conductive brush is characterized in that the conductive gasket is provided with the conductive brush, the conductive brush comprises a metal coil body, the metal coil body is hollow and cylindrical, a cylinder is arranged in the metal coil body, and the middle of the cylinder and the metal coil body are fixed through soldering tin; the upper part of the cylinder is a fixed end, and a welding surface is arranged on the fixed end; the welding face and plasma equipment fixed connection, the columniform lower part is provided with the expansion end, the expansion end is the contact, is provided with the spring between contact and the cylinder, and the contact activity is flexible to be set up on the metal coil body.

2. The conductive brush applied to the plasma equipment as claimed in claim 1, wherein both ends of the spring are welded and fixed with the contact head and the cylinder, respectively.

3. The conductive brush applied to a plasma apparatus according to claim 2, wherein the contact head has a length smaller than that of the metal coil body.

4. The conductive brush applied to a plasma apparatus according to claim 3, wherein the sum of the lengths of the contact head and the cylinder is greater than the length of the metal coil body.

5. The conductive brush applied to the plasma equipment as claimed in claim 1, wherein the conductive washer is fixed to a rotor of the outer rotor motor, the rotor of the outer rotor motor drives the conductive washer to rotate, and the contact head contacts with the conductive washer.