Secondary anti-collision device after wire breakage of an electric spark machine tool

By designing a secondary anti-collision device with a limit plate and an emergency stop plate on the EDM machine, the problem of easy damage to the contact switch after the molybdenum wire breaks is solved, thereby achieving equipment safety and reducing maintenance costs.

CN224508648UActive Publication Date: 2026-07-17SHANDONG IRON & STEEL GRP YONGFENG LINGANG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG IRON & STEEL GRP YONGFENG LINGANG CO LTD
Filing Date
2025-08-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When the molybdenum wire breaks on an EDM machine, the contact switch is easily pushed away accidentally during maintenance, leading to a high rate of secondary damage to the equipment, increased maintenance costs, and prominent safety hazards.

Method used

Design a secondary anti-collision device including a limit plate and an emergency stop plate. The limit plate covers the over-limit range of the contact switch, and releases an induction signal when the contact switch exceeds the limit to stop the molybdenum wire roller in reverse, thus avoiding collision between the contact switch and the mechanical stop.

Benefits of technology

It reduces the rate of secondary damage after equipment repair, decreases the frequency of parts replacement, lowers maintenance costs, and improves safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to electric spark machine tool anti -collision technical field, concretely relates to a kind of secondary anti-collision device after electric spark machine tool wire breakage;Including limit plate, emergency stop plate and track, track is the track of molybdenum wire cylinder stroke, limit plate is installed in the limit position of track both sides, emergency stop plate is located in the position of preset stop, limit plate is located in the outside of emergency stop plate, limit plate is installed on the limit position of molybdenum wire cylinder stroke track by adjusting bolt, limit plate covers the movement range of contact switch after emergency stop plate, adjusting bolt adjusts the spacing of limit plate and contact switch, contact switch is installed on the moving part of molybdenum wire cylinder, after contact switch contact with limit plate after moving through emergency stop plate beyond limit with molybdenum wire cylinder, machine tool drives molybdenum wire cylinder to move in the opposite direction of original moving direction;Electric spark machine tool wire breakage secondary anti-collision device designed by the utility model: simple structure, reduce the secondary damage rate of equipment after maintenance, reduce maintenance cost, avoid security risk.
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Claims

1. A secondary anti-collision device for wire breakage in an EDM machine tool, characterized in that, It includes a limit plate, an emergency stop plate, and a track. The track is a track for the stroke of a molybdenum wire roller. The track has end plates at both ends. The limit plate is installed at the extreme positions on both sides of the track and inside the end plates. The emergency stop plate is located at a preset stop position and inside the limit plate.

2. The secondary anti-collision device after wire breakage of the electric spark machine tool according to claim 1, characterized in that, The limiting plate is installed at the extreme position of the molybdenum wire roller travel track by adjusting bolts, and the limiting plate covers the movement range of the contact switch after it exceeds the emergency stop plate.

3. The secondary anti-collision device after wire breaking of the electric spark machine tool according to claim 2, characterized in that, The adjusting bolt adjusts the distance between the limiting plate and the contact switch.

4. The secondary anti-collision device after wire breaking of the electric spark machine tool according to claim 2, characterized in that, The contact switch is installed on the moving part of the molybdenum wire roller. After the contact switch moves with the molybdenum wire roller and passes the over-limit emergency stop plate and contacts the limit plate, the machine tool drives the molybdenum wire roller to move in the opposite direction of the original moving direction.

5. The device according to claim 1, wherein the device is characterized by: The emergency stop plate is located at the originally preset stop position of the molybdenum wire roller travel track, and the emergency stop plate is located inside the limit plate.

6. The secondary anti-collision device for wire breakage in an EDM machine tool according to claim 1, characterized in that, The track is a track for moving molybdenum wire rollers, with end plates at both ends of the track. Limit plates and emergency stop plates are installed inside the end plates.