The structure of the tablet press
A machine that presses particles or powder materials into a forming hole is called a tablet press. Early tablet presses consisted of a set of particle-shaped presses that moved up and down with the punch. This machine was called the tablet press, which later evolved into the tablet press and the basket press. The working principle of both presses is still the unidirectional press, which is based on the manual press. In other words, the press is fixed, immersed in the press, only the upward pressure movement will produce pressure. As a result, due to the inconsistency of the upper and lower forces, the plate internal density is not uniform, prone to cracking and other problems.
In view of this shortcoming of unidirectional stamping machine, a kind of multi - wheel multi - stamping machine began to appear. At the same time, the machine pressure is uniform, so that the air in the drug particles have enough time to escape from the mold hole, improve
The stamping process of a tablet press
During plate stamping, the handle and stamping form are subjected to great pressure and are made of ordinary bearing steel (e.g. Crl5), which is heat-treated to improve its hardness.
There are many types of punch, and the shape of the punch is determined by the shape of the pill. According to the structure form of the tablet press, it can be divided into circles and sections (including polygons and curves). The section shape of the handle is flat, beveled, shallow, deep, synthetic, etc. The flat and beveled fist is used for flattening the cylindrical tablet, the slightly concave is used for clamping the double convex tablet, the deep concave is mainly used for clamping the coating tablet, and the synthetic is mainly used for clamping the profiled tablet. Promote drug identification and management. Marks, such as drug name, dose and horizontal lines, may also be recorded on the end face of the press. For different doses of tablets, the approp
Current situation of tablet press
The tablet press is the manufacturing equipment in the history of China's production. Tablet press specifications, quantity, is a long-term export, mass production of pharmaceutical equipment. According to statistics, there are nearly 50 manufacturers in China, with an annual output of 3000 units/year and more than 70 units of product specifications, it can be executed by pressing round chips, rigid chips, profiled chips, double chips, multi-layer chips, ring chips, chip bags and so on. It is an indisputable fact that the quantity, variety, specification and output of compact-core manufacturing rank first in the world.
In recent years, enterprises that have formed "filmmaking mechanism" begin to pay attention to product quality and believe in the business philosophy of winning by quality. According to the characteristics of domestic pharmaceutical enterprises, the variety of drugs is large and the production scale is small.
After the techno
Powder for tablet press 2
1. Compressible starch: also known as glutinous starch (glutinous starch), is a new type of medical excipients, has been obtained in the United Kingdom, the United States, Japan and China pharmacopoeic collection, China was successfully developed in 1988, now there is a large number of the market of glutinous starch. Domestic printed starch is partially pregelatinized starch (completely pregelatinized starch also known as alpha starch) starch, is foreign toner can not be compared. It is a kind of multifunctional auxiliary material which can be used as filler. It has good fluidity, pressure resistance, self-lubricity and drying adhesion, and good disinfection effect. In direct extrusion powder, magnesium stearate dosage should not exceed 0.5%, so as not to produce softening effect.
2.Cellulose (ACyl MCC), a kind of partially hydrolyzed crystalline cellulose and cellulose, can be pressed into solid egg powder. Cellulose (ACyl MCC), which is made of higher hard
Function of tablet press
Single-pressure type, single-sided ejection. Using the IPT middle mold, granular raw materials can be pressed into round tablets and special-shaped tablets of various specifications.
It has the function of pre-pressing and main-pressing twice to press, which can improve the quality of press.
Using touch screen speed control device, easy to operate, safe and reliable.
It adopts PLC programmer and has digital display function. If connected with USB port, it can realize data collection of tablet pressing working status.
The main transmission structure is reasonable, the transmission stability is good, and the service life is long.
Equipped with motor overload protection device, when the pressure is overloaded, it can automatically stop. There are pressure overpressure protection, emergency stop device, strong exhaust and heat dissipation device.
The stainless steel outer casing is a fully enclosed form, and all the parts in contact with the medicine are
Introduction of tablet press
Pills of Traditional Chinese medicine is one or more kinds of traditional Chinese medicine powder or extract processing, refining, and then mixed, made into appropriate auxiliary materials. The advantages of chemical agents are that they are basically used as auxiliary materials for tablet computers. However, Traditional Chinese medicine itself is a functional accessory, such as cement mixture, diluent and medicine face. Therefore, material distribution table PC is the content of water, mold and volatile medicine, which is easy to absorb and the effect of storage time will be reduced.
After selecting high quality raw materials according to the formula, the raw materials are washed, sterilized, processed and dried. Dry and broken. The degree of fracture can be filtered with a 100-slot sieve.
The refinement of tablets is mostly the preparation of particles before pressing, which is determined by the physical properties of the material. Making particl
Disassembly and assembly of single punch tablet press
1.Plate of the intermediate mould
Disassembly； draw out the fender and take away the hopper.Unscrew the fixed bolt of the hopper machine and the spring,unscrew the fixed bolt and spring gasket of the plate of intermediate mould,and then you can take away the plate of intermediate mould.
Assembly:Refer to above contrary turn to go on.Attention correction to avoiding damage the orifice of the hopper when screw the fixed bolt of the hopper.
Disassembly:Unscrew the nuts and turn the uprush rods to separate it with follow-move shaft.Turn hand wheel to rasie the eccentric wheel shield to the top point;turn hand wheel to move it upper direction,and then you can dreaw the uprush rod out of the orifice of the mould.Assembly please refers to above instruction in counter sequence.
Disassembled:Unscrew the fixed bolt of downrush,bolt and turn the gear press plate to adjust gear,lower the downrush rod and take