Tablet press guide rod upper punch mechanism

Abstract

The invention relates to a guide rod upper punch mechanism for a tablet press. The mechanism comprises a crank rocker mechanism, a roller and a guide rod mechanism, wherein the crank rocker mechanism comprises a crank, a first connecting rod and a rocker; one end of the crank is connected to a rack in a rotating way; the two ends of the first connecting rod are connected with the other end of the crank and the middle part of the rocker in the rotating way respectively; one end of the rocker is connected to the rack in the rotating way; the roller is connected to the other end of the rocker in the rotating way; the guide rod mechanism comprises a guide rod, a second connecting rod and an upper punch; one end of the guide rod is connected to the rack in the rotating way; a sliding way is arranged in the guide rod, and is in higher pair connection with the roller; one end of the second connecting rod is connected to the middle part of the guide rod in the rotating way, and the other end of the second connecting rod is connected with the upper punch in the rotating way; the crank rotates counterclockwise, and drives the rocker to swing through the first connecting rod, and the rocker drives the upper punch to move up and down through the guide rod and the second connecting rod. Compared with the prior art, the mechanism has the advantages that the pressure holding time and a pressure holding effect can be accurately ensured, and the mechanism has good transmission and pressurization functions.

Description

technical field [0001] The invention relates to a punch mechanism of a tablet press, in particular to a punch mechanism on a guide rod of a tablet press formed by a crank rocker mechanism and a guide rod mechanism connected in series. Background technique [0002] A tablet press is a machine that places granular or powdery materials in a cavity and is pressed into tablets by a punch. The upper punch mechanism controls the movement of the upper punch so that it can work in coordination with the lower punch to complete the tableting and pressing. Pressure-retaining work. [0003] At present, the most widely used upper punch mechanism is a multi-rod mechanism composed of a crank-rocker mechanism and a rocker-slider mechanism in series. The advantage is that it has a good transmission and boosting function, and the structure is simple and light, and it is easy to meet the requirements of the movement law. . SUMMARY OF THE INVENTION [0004] The purpose of the present invent...

AI Technical Summary

Problems solved by technology

Its advantage is that it has very good transmission and boosting functions, and its structure is simple and light, and it is easy to meet the requirements of the law of motion. The disadvantage is that it cannot accurately guarantee the pressure holding time and pressure holding effect during pressure holding, resulting in the produced products not being compact enough.

Images