一种自动穿丝线切割的下导丝机构

Abstract

本实用新型公开了一种自动穿丝线切割的下导丝机构，属于线切割设备领域。该下导丝机构包括：固定导丝件设第一电极丝通道，活动导丝件安装于导丝动力组件，导丝动力组件用于带动活动导丝件下降或上升，当导丝动力组件带动多个活动导丝件下降时，使多个活动导丝件向远离电极丝的方向移动，当导丝动力组件带动多个活动导丝件上升时，使多个活动导丝件向靠近电极丝的方向移动至形成第二电极丝通道位置。本实用新型通过使活动导丝件向下移动的过程中打开为开放结构，无需使固定导丝件收容活动导丝件即可实现活动导丝件可升降，解决了现有技术使固定导丝管可收容活动导丝管，才能实现活动导丝管在固定导丝管和工件之间可升降，导致穿丝失败率高的问题。

Claims

1. A self-threading lower thread guide mechanism, characterized in that, include: Fixed guide wire component, multiple movable guide wire components, and guide wire power assembly; The fixed guide wire component is provided with a first electrode wire channel through which the electrode wire can pass. The movable guide wire component is installed on the guide wire power assembly, which is used to drive multiple movable guide wire components to descend or rise. When the guide wire power assembly drives multiple movable guide wire components to descend, the multiple movable guide wire components move away from the electrode wire. When the guide wire power assembly drives multiple movable guide wire components to rise, the multiple movable guide wire components move towards the direction of the electrode wire to form a second electrode wire channel through which the electrode wire can pass.

2. The automatic thread guide wire cutting down mechanism according to claim 1, characterized in that, The guide wire power assembly includes: a lifting power source, a mounting base, a spring, and an unlocking component; The mounting base is installed on the lifting power source. One end of the spring is connected to the mounting base, and the other end is connected to the movable guide wire. The spring is used to apply a force to the movable guide wire to move it closer to the electrode wire. The unlocking component is located below the movable guide wire component, and the unlocking component is used to apply a force to the movable guide wire component to move it away from the electrode wire.

3. The automatic thread guide wire cutting downfeed mechanism according to claim 2, wherein A guide structure is provided above the unlocking component; When the guide wire power assembly drives multiple movable guide wire components to descend, the movable guide wire components connect with the guide structure of the unlocking component, causing the multiple movable guide wire components to move away from the electrode wire.

4. The automatic thread guide wire cutting down mechanism according to claim 2, wherein The guide wire power assembly further includes: a guide member, which is mounted on the mounting base, and the movable guide wire member is connected to the guide member; The guide extends in the lateral direction, allowing the movable guide wire to move in the lateral direction.

5. The automatic thread guide wire cutting down mechanism according to claim 1, wherein Also includes: A material stop is installed on the wire guide power assembly and is positioned above the movable wire guide. The wire guide power assembly is used to drive the material stop to descend or rise. When the plurality of movable wire guides move away from the electrode wire, the sidewalls of the plurality of movable wire guides used to form the second electrode wire channel are located below the stop member.

6. The automatic thread guide wire cutting down mechanism according to claim 1, wherein Also includes: A lifting wire guide, wherein the lifting wire guide is provided with a third electrode wire channel through which the electrode wire can pass; The lifting wire guide is installed on the wire guide power assembly. The lifting wire guide is positioned above the movable wire guide. The outer diameter of the lifting wire guide is smaller than the outer diameter of the multiple movable wire guides when forming the second electrode wire channel. The wire guide power assembly is used to drive the lifting wire guide to descend or rise. When multiple movable wire guides form a second electrode wire channel, the electrode wires sequentially pass through the machining holes of the workpiece and then sequentially pass through the third electrode wire channel, the second wire-passing channel, and the first wire-passing channel.

7. The automatic thread guide wire cutting down mechanism according to claim 1, wherein The guide wire power assembly includes: a rotary power source, and a plurality of the movable guide wire elements are mounted on the rotary power source, the rotary power source being used to drive the movable guide wire elements to rotate; When the rotating power source causes the tips of the multiple movable wire guides to descend, the tips of the multiple movable wire guides move away from the electrode wire. When the rotational power source raises the tips of the multiple movable wire guides, it moves the tips of the multiple movable wire guides toward the direction of the electrode wire to form a second electrode wire channel through which the electrode wire can pass.

8. The lower wire guide mechanism for automatic wire cutting according to claim 1, characterized in that, The guidewire power assembly includes: a lifting power source and a lateral movement power source; The lateral movement power source is installed on the lifting power source, and the plurality of the movable wire guides are installed on the lateral movement power source; The lifting power source is used to drive multiple movable guide wire components to descend or rise. The lateral movement power source is used to drive multiple movable guide wire components to move away from or towards the electrode wire.

9. The automatic thread guide wire cutting down mechanism according to claim 1, wherein, The top end of the first electrode wire channel is provided with a guide wire eyepiece.

10. The automatic thread guide wire cutting down mechanism according to claim 1, wherein, The wire guide power assembly is installed on the frame or lower head of the wire EDM machine.

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