Pipe fitting processing machine

Abstract

A pipe fitting processing machine includes a workpiece positioning unit, a rotary drive unit, a rotary offset unit, a protective cover unit, and a control unit. The rotary drive unit includes a motor module and a working shaft module. The rotary offset unit moves the working shaft module, causing its axis to move away from or towards a central axis, and drives the working shaft module to rotate around the central axis. The protective cover unit includes a protective cover assembly, a linkage block, and a microswitch assembly. When the protective cover assembly covers or does not cover the working shaft module, it moves the linkage block relative to the microswitch assembly, causing the microswitch assembly to output a safety signal. When the protective cover assembly does not cover the working area, the control unit controls the motor module not to drive the working shaft module to rotate.

Claims

1. A pipe fitting processing machine, suitable for mounting a cutting tool and processing a pipe fitting, comprising: a workpiece positioning unit suitable for clamping and moving the pipe fitting; a rotary drive unit including a motor module and a work axis module driven by the motor module to rotate about its own working axis, the work axis module being suitable for mounting the cutting tool and defining a working area suitable for processing the pipe fitting; a rotary offset unit including a deflection module, an offset module and a deflection drive module, the deflection module being provided by the work axis module and defining a central axis parallel to the working axis, the offset module being connected to the work axis module for moving the work axis module so that the working axis moves away from or closer to the central axis, the deflection drive module being connected to the deflection module and driving the deflection module to rotate the work axis module about the central axis; A protective cover unit, corresponding to the working shaft module, includes a protective cover assembly that covers the working area, a linkage block connected to the protective cover assembly, and a micro switch assembly corresponding to the linkage block. When the protective cover assembly switches between covering and not covering the working area, it moves the linkage block relative to the micro switch assembly, causing the micro switch assembly to output a safety signal corresponding to the position of the protective cover assembly. A control unit, electrically connected to the motor module and the micro switch assembly, controls the motor module not to drive the working shaft module to rotate when the protective cover assembly does not cover the working area, based on the safety signal. The workpiece positioning unit includes a moving module for moving the pipe fitting, a first moving operating member connected to the moving module, a rotating module for rotating the pipe fitting, a fixed operating member that can abut against the rotating module, and a stop member disposed between the fixed operating member and the first moving operating member. The first moving operating member is used to drive the moving module to move the pipe fitting. The fixed operating member can move relative to the stop member and abut against or not abut against the rotating module. When the fixed operating member moves away from the stop member and abuts against the rotating module, the rotating module is fixed and cannot rotate. When the fixed operating member moves close to the stop member and does not abut against the rotating module, the rotating module can rotate. The fixed operating member is limited by the stop member and does not touch the first moving operating member.

2. The pipe fitting processing machine as described in claim 1, wherein, The protective cover unit also includes a base module. The protective cover assembly is rotatably disposed on the base module and can be flipped outward relative to the working shaft module without covering the working area, and the linkage block is activated to press against the micro switch assembly. Alternatively, it can be flipped inward relative to the working shaft module to cover the working area, and the linkage block is activated to prevent it from pressing against the micro switch assembly.

3. The pipe fitting processing machine as described in claim 2, wherein, The base module has a mounting plate and a support shaft mounted on the mounting plate for the protective cover assembly to be fitted. The mounting plate has a guide groove corresponding to the movement trajectory of the protective cover assembly. The linkage block passes through the guide groove to connect to the protective cover assembly and moves along the guide groove as the protective cover assembly moves.

4. The pipe fitting processing machine as described in claim 1, wherein, The deflection module has a guide plate and a support plate spaced apart along the central axis. The guide plate and the support plate are through which the working shaft module passes. The deflection drive module has a deflection operation group and a linkage wheel group connecting the deflection operation group and the guide plate. The deflection operation group is used to drive the linkage wheel group to drive the guide plate, so that the guide plate drives the working shaft module to rotate around the central axis. The linkage wheel group has a guide wheel adjacent to the guide plate along the central axis, a plurality of bolts that screw the guide plate and the guide wheel, and a plurality of positioning pins that pass through the guide plate and the guide wheel.

5. The pipe fitting processing machine as described in claim 4, wherein, The guide plate is coaxially arranged with the guide wheel, and each of the locating pins is equidistant from the axis of the guide plate.

6. The pipe fitting processing machine as described in claim 1, wherein, The deflection module has a guide plate and a support plate spaced apart along the central axis. The guide plate and the support plate are for the working shaft module to pass through and to drive the working shaft module to rotate around the central axis. The offset module has a connecting block with the guide plate and the support plate respectively at both ends, a scale set on the working shaft module, an index set on the connecting block and pointing to the scale, an offset rod movably passing through the connecting block and connected to the working shaft module, and a plurality of fixing members passing through the scale and the working shaft module to fix the scale. The connecting block forms a plurality of through holes corresponding to the fixing members respectively. Each through hole passes through the connecting block along the extension axis of the corresponding fixing member.

7. The pipe fitting processing machine as described in claim 1, wherein, The deflection module has a guide plate and a support plate spaced apart along the central axis. The guide plate and the support plate are through which the working shaft module passes. The deflection drive module has a deflection operation group and a linkage wheel group connecting the deflection operation group and the guide plate. The deflection operation group is used to drive the linkage wheel group to drive the guide plate, so that the guide plate drives the working shaft module to rotate around the central axis. The protective cover unit also includes a side cover covering the linkage wheel group.

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