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CN-121973408-A - Unlimited rotation unit for mechanical arm 2-axis NC

CN121973408ACN 121973408 ACN121973408 ACN 121973408ACN-121973408-A

Abstract

The invention discloses an infinite rotation unit for a 2-axis NC of a mechanical arm, which comprises a stator, a rotor assembly, a carbon brush assembly and a driving assembly. The rotor assembly comprises a first rotor and a second rotor, the driving assembly comprises a driving source, a transmission speed reducing part, a first connecting plate and a second connecting plate, the carbon brush assembly comprises a carbon brush plate and a carbon brush, the carbon brush plate is arranged on a supporting shaft outer ring on a stator, the carbon brush is fixedly arranged on a shell, the first rotor is rotationally connected with the stator through a first rotation supporting part, the lower end face of the first rotor is fixedly connected with an end cover, the second rotor is axially provided with a mounting hole, the second rotor is sleeved on the first rotor, the lower end face of the second rotor is fixedly connected with the end cover through a bolt, and the second rotor is rotationally connected with the supporting shaft through a second rotation supporting part. The invention solves the technical problem that the traditional mechanical arm 2-axis NC cannot realize 360-degree infinite rotation due to the winding of an air pipe and a signal wire in the technical field of mould plastic product automation.

Inventors

  • Katsuya Kuanghong
  • ZHOU WENHAO
  • LI LONGYIN

Assignees

  • 中日龙(襄阳)机电技术开发有限公司

Dates

Publication Date
20260505
Application Date
20260210

Claims (6)

  1. 1. The infinite rotating unit for the mechanical arm 2-axis NC is characterized by comprising a stator, a rotor assembly, a carbon brush assembly and a driving assembly, wherein the rotor assembly comprises a first rotor and a second rotor, the driving assembly comprises a driving source, a transmission speed reducing part, a first connecting plate and a second connecting plate, the carbon brush assembly comprises a carbon brush plate and a carbon brush, the carbon brush plate is arranged on a supporting shaft outer ring on the stator and fixedly arranged on a shell, the first rotor is rotationally connected with the stator through a first rotation supporting part, the lower end face of the first rotor is fixedly connected with an end cover, the second rotor is provided with a mounting hole along the axial direction and sleeved on the first rotor, the lower end face of the second rotor is fixedly connected with the end cover through a bolt, and the second rotor is rotationally connected with the supporting shaft through a second rotation supporting part.
  2. 2. The infinite rotation unit for the mechanical arm 2 shaft NC according to claim 1, wherein the cross section of the stator is T-shaped, wherein a plurality of input air holes are formed in the upper end portion of the stator along the radial direction, the plurality of input air holes are respectively communicated with the surface air channels of the first rotor and the second rotor through the inner air channels of the stator, the surface air channels of the first rotor and the second rotor are simultaneously communicated with the inner air channels of the end cover, the end cover is provided with an air outlet hole along the radial direction, and the output of gas is realized through the output air holes and the inner air channels of the end cover.
  3. 3. The infinite rotation unit for a 2-axis NC of a mechanical arm according to claim 2, wherein an input signal line is connected to the carbon brush plate, an output signal line is connected to the carbon brush, and a signal of the input signal line is transmitted to the output signal line through a slip ring of the carbon brush plate and a brush head of the carbon brush.
  4. 4. The infinite rotation unit for a 2-axis NC of a mechanical arm according to claim 3, further comprising a gas path sealing assembly, wherein the gas path sealing assembly comprises a first sealing unit and a second sealing unit, and the first sealing unit and the second sealing unit are respectively arranged between the matching surfaces of the stator and the first rotor and the second rotor.
  5. 5. The infinite rotation unit for a 2-axis NC of a mechanical arm according to claim 4, wherein an output end of the driving source is in driving connection with an input end of the transmission reducing part so as to achieve an increase in output torque of the driving source, the output end of the transmission reducing part is in bolt fixed connection with an upper end portion of the rotor through the first connection plate, and a lower end of the end cover is in bolt connection with the 2-axis NC through the second connection plate.
  6. 6. The infinite rotation unit for a 2-axis NC of a mechanical arm according to claim 5, wherein the carbon brush is made of a special material having excellent wear resistance and conductivity.

Description

Unlimited rotation unit for mechanical arm 2-axis NC Technical Field The invention relates to the technical field of mould plastic product automation, in particular to an infinite rotation unit for a 2-axis NC of a mechanical arm. Background In the automatic production process of injection molding products, a take-out machine is required to clamp and transfer the molded products in the mold to a designated station, and in the process, a tooling tray is required to drive the products to change the placement direction so as to realize the subsequent process circulation, so that high requirements are provided for the rotation function of the mechanical arm 2-axis NC. In order to improve production efficiency and reduce automatic transformation cost, and simultaneously realize free setting of the product placement direction, the mechanical arm 2-axis NC is required to have 360-degree infinite rotation capacity, so that related infinite rotation units have urgent and wide application requirements. After the clamp plate is arranged at the tail end of the existing mechanical arm 2-axis NC, an air pipe and a signal line are required to be connected for the grabbing part of the clamp plate, and the exposed pipelines can be wound and pulled along with the rotation of the 2-axis NC, so that the rotation angle of the 2-axis NC is strictly limited. When rotating to certain angle, pipeline winding problem can force equipment to turn around to initial position, can't realize the continuous rotation of wide-angle, not only influences the takt time, can also increase pipeline wearing and tearing, trouble probability of shutting down, is difficult to satisfy the high-efficient operation demand of automated production line. Disclosure of Invention The invention aims to overcome the technical defects, and provides an infinite rotation unit for a mechanical arm 2-axis NC, which solves the technical problem that the traditional mechanical arm 2-axis NC cannot realize 360-degree infinite rotation due to winding of an air pipe and a signal wire in the technical field of mould plastic product automation. To achieve the above technical objective, the present invention provides an infinite rotation unit for a 2-axis NC of a robot arm, including The motor comprises a stator, a rotor assembly, a carbon brush assembly and a driving assembly, wherein the rotor assembly comprises a first rotor and a second rotor, the driving assembly comprises a driving source, a transmission speed reducing part, a first connecting plate and a second connecting plate, the carbon brush assembly comprises a carbon brush plate and a carbon brush, the carbon brush plate is arranged on a supporting shaft outer ring on the stator, the carbon brush is fixedly arranged on a shell, the first rotor is in rotary connection with the stator through a first rotary supporting part, the lower end face of the first rotor is in fixed connection with an end cover, the second rotor is provided with a mounting hole along the axial direction, the second rotor is sleeved on the first rotor, the lower end face of the second rotor is in fixed connection with the end cover through a bolt, and the second rotor is in rotary connection with the supporting shaft through a second rotary supporting part. Compared with the prior art, the invention has the beneficial effects that: 1. The invention realizes 360-degree infinite rotation and thoroughly solves the problem of pipeline winding, and the gas circuit and the signal input port at the stator end are kept fixed by the gas circuit sealing and conducting structure of the stator, the first rotor and the second rotor and the signal sliding and connecting structure of the carbon brush and the carbon brush plate, and the first rotor and the second rotor end synchronously rotate along with the 2-axis NC. The design thoroughly avoids the winding problem caused by the exposure of the air pipe and the signal wire of the traditional 2-axis NC, can realize 360-degree continuous rotation without midway return, and meets the free setting requirement of the direction of the injection molding product when the working procedure flows. 2. The gas circuit and the signal transmission are stable and reliable, and the continuous operation of the equipment is ensured, in the gas circuit transmission process, the sealing rings on the matching surfaces of the stator, the first rotor and the second rotor can effectively prevent gas leakage, and the stable gas supply of the pneumatic element of the terminal clamp plate is ensured. During signal transmission, the special carbon brush and the carbon brush slip ring are in close contact all the time, so that continuous conduction of signals at any rotation angle can be realized, interruption and delay are avoided, and the clamp is prevented from being out of control or production stagnation caused by signal loss. 3. The invention can adjust the component parameters according to different loads and precision requi