Pressure column pressure wheel axle structure with built-in pressure sensors

Abstract

The invention provides a pressure column pressure roller shaft structure with a built-in pressure sensor, which includes a pressure roller shaft body, two coaxial but non-penetrating sensor holes are arranged on the pressure wheel shaft body in the radial direction, and a sensor hole is arranged between the two sensor holes A radial threading hole in which two sensor holes are connected together; an axial threading hole is arranged in the axial direction between one end of the pressure roller shaft body and one of the sensor holes or the radial threading hole; a pressure threading hole is pasted on the side walls of the two sensor holes respectively. For the strain gauge, two wires are inserted into the axial threading hole from one end of the pressure roller shaft body, and are respectively welded to the joints of the two pressure strain gauges. The present invention adopts the pressure strain gauge as the pressure sensor, which has the characteristics of large sensitivity coefficient and extremely small mechanical hysteresis; the pressure sensor and the pressure wheel shaft are integrated, the structure is simple, the size is small, and the installation is convenient; the mechanical connection structure of the traditional sensor is eliminated, avoiding The error caused by mechanical connection is eliminated, and the accuracy and feedback speed of pressure detection are improved.

Description

technical field [0001] The invention relates to a pressure column pressure wheel shaft structure with a built-in pressure sensor, which is suitable for the pressure column device of a rotary tablet press used in the production of pharmaceutical and food industries. Background technique [0002] The rotary tablet press is a multi-punch tablet press developed on the basis of a single-punch tablet press that can continuously complete a series of actions such as filling, pressing, and pushing. Because of its small vibration, low noise, low energy consumption, high output, stable quality and suitable for large-scale production, it has been widely used at home and abroad, and has become the main mechanical equipment for tablet production. [0003] In the existing rotary tablet press, the pressure sensor of the pressure column used is an independent component, and the pressure sensor is mechanically connected with the pressure wheel shaft by a connecting rod. This pressure sensor ...

AI Technical Summary

Problems solved by technology

[0004] 1. The assembly structure is relatively complicated, and the installation of the pressure sensor in the pressure column is cumbersome;

[0005] 2. The mechanical connection link in the middle will a

Images