一种转子焊接压敏电阻治具
By designing a rotor welding varistor fixture, the problems of varistor offset and impurity accumulation during turntable rotation were solved, enabling automatic cleaning and improving equipment operating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN KEMEIDA AUTOMATION EQUIP CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the varistor is prone to displacement when the turntable rotates, and rosin impurities easily accumulate in the countersunk hole, requiring frequent manual cleaning and affecting the operating efficiency of the equipment.
A rotor welding varistor fixture is designed, including a lower fixture and an openable conical cover. The conical cover is provided with welding holes and a fixing boss. The inner wall of the welding hole is concave to form a clearance groove for discharging impurities. The fixing boss applies slight pressure to the varistor to prevent it from shifting. Automatic cleaning is achieved through the synchronously moving conical cover unit.
It effectively prevents varistor misalignment, automatically removes rosin impurities, reduces manual downtime for cleaning, and improves equipment operating efficiency.
Smart Images
Figure CN224508661U_ABST
Abstract
Claims
1. A rotor-welded varistor fixture, characterized by, Includes the lower jig and cone cap, among which, The lower fixture is provided with a mounting cavity for embedding the rotor. The conical cover is openable and closable on the lower fixture. The conical cover is provided with a welding hole for the commutator through which the rotor passes and a fixing boss for clamping and fixing the varistor. The inner wall of the welding hole is recessed to form a clearance groove for discharging impurities.
2. The rotor-welded varistor fixture of claim 1, wherein, The inner wall of the fixed boss is provided with a first boss surface and a second boss surface with an obtuse angle. The second boss surface is located above the first boss surface. When the conical cover is closed, the first boss surface makes slight contact with the upper edge of the outer circle of the varistor, applying a slight downward pressure to the varistor. The second boss surface has a small gap with the outer circle of the varistor. Alternatively, the first boss surface does not contact the varistor, but the second boss surface makes slight contact with the outer circle of the varistor, applying a slight inward squeezing force to the varistor.
3. The rotor-welded varistor fixture of claim 1, wherein, The fixed boss is disposed within the clearance groove.
4. The rotor-welded varistor fixture of claim 1, wherein, The cone cover includes a semi-circular first cone cover unit and a semi-circular second cone cover unit that are openable and closable on the lower fixture. The first cone cover unit and the second cone cover unit move synchronously in opposite directions relative to the lower fixture through a cone cover opening and closing assembly.
5. The rotor-welded varistor fixture of claim 4, wherein, The conical cover opening and closing assembly includes a first opening shaft, a second opening shaft, a first gear, and a second gear. The first opening shaft and the second opening shaft are rotatably connected to the lower fixture. The first conical cover unit and the second conical cover unit are respectively connected to the top of the first opening shaft and the second opening shaft. The first gear and the second gear are respectively sleeved on the first opening shaft and the second opening shaft, and the first gear meshes with the second gear.
6. The rotor-welded varistor fixture of claim 5, wherein, The lower fixture is provided with bearings for mounting the first opening shaft and / or the second opening shaft.
7. The rotor-welded varistor fixture of claim 5, wherein, The bottom of the first and / or second opening shafts is connected to an opening / closing handle, which is provided with a connection hole for connecting to a drive mechanism.
8. The rotor-welded varistor fixture of claim 5, wherein, The lower fixture includes a first arc-shaped plate and a second arc-shaped plate, with the mounting cavity formed between the first arc-shaped plate and the second arc-shaped plate; wherein, The upper outer wall of the first arc-shaped plate is provided with a first recessed platform at both ends, which are respectively used for the first cone cover unit and the first end of the second cone cover unit to be embedded. The side of the first arc-shaped plate is magnetically connected to the first end of the first cone cover unit or the second cone cover unit. The upper outer wall of the second arc-shaped plate is provided with a second recessed platform at both ends, which are respectively for the second ends of the first cone cover unit and the second cone cover unit to be inserted. The first opening shaft and the second opening shaft respectively pass through the bottom of the two second recessed platforms.
9. The rotor-welded varistor fixture of claim 8, wherein, The lower fixture also includes a support base and a rotor height adjustment sleeve. The support base has an adjustment hole in the middle. The rotor height adjustment sleeve is slidably connected to the adjustment hole. The rotor height adjustment sleeve has a positioning hole for the motor shaft of the rotor to be inserted. The first arc plate and the second arc plate are disposed above the support base.
10. The rotor-welded varistor fixture of claim 1, wherein, The sidewall of the mounting cavity may be provided with a first positioning screw and a second positioning screw for fixing the rotor.