Problems and methods of using tablet press Drug crushing fineness is not enough, fibrous or elastic drug or oil composition content is more and mixed uneven. Solution: the drug can be crushed through the 100 mesh screen, the selection of strong adhesive, appropriate increase the pressure of the tablet press, increase the oil drug absorbent fully mixed methods to overcome. Insufficient amount of adhesive or wetting agent or improper selection, so that the texture of the particles loose or uneven distribution of particle size, coarse and fine grain stratification. Solution: choose the appropriate adhesive or increase the dosage, improve the granulation process, mixing more soft materials, mixing particles and other methods to overcome. The water content of the particles is too little, and the excessively dry particles have greater elasticity. The drugs containing crystal water lose more crystal water in the drying process of the particles, which makes the particles brittle

Tablet press in die top wire does not work how to do (1) in the process of use, punching rod hole and die hole due to different degrees of wear will likely appear different axial phenomenon, so that the punching rod moving up and down friction resistance increases, serious causes can not be normal tablet pressing. In view of this situation, if the production task is tight, the punching die hole can be temporarily blocked by the method of maintaining production, until the production task is not tight, and then maintenance. If the wear is not very serious, the coaxiality can be restored by using reamer to punch the rod hole, and the rotary table needs to be replaced when the wear is serious. (2) the upward movement of the turntable is generally caused by the loosening of the taper locking block of the fixed turntable, which can be solved by fastening. (3) the upward movement of the middle die is mostly caused by the loosening of the top wire of the middle die, which is solved by faste

Transmission system of tablet press The main drive system is to provide power for the tablet press, which requires that the speed of the main drive system is adjustable, and at the same time it has enough torque, so that the speed is stable and reliable under large impact load. The main drive system mainly includes high-power AC motor, frequency converter, tensionwheel, large pulley, synchronous tooth belt, small pulley, hand wheel, worm gear reducer, main drive shaft and other components. The machine adopts frequency conversion technology to replace the mechanical speed regulation of stepless speed regulating motor. The advantages of frequency conversion speed regulation are energy saving and consumption reduction, reliable control, stable operation and low noise. Inverter itself has over voltage, low voltage and over current multiple protection functions, such as through the output parameters can be for real-time monitoring of actuators, once appear abnormal, protection functio

The main uses of tablet press This machine is widely used in pharmaceutical factory, pharmaceutical factory, biological engineering, food factory, health product factory, chemical factory, pesticide factory, veterinary drug factory and so on. The machine has wide adaptability to materials, and has good adaptability to non-viscous powder. Pharmaceutical industry: Chinese medicine tablet, western medicine tablet, nutrient tablet Food industry: confectionery tablets, coffee tablets, throat lozenges, chocolate beans, seasoning cubes Health products industry: oral tablets, milk tablets, calcium tablets, propolis tablets Electronic battery industry: electronic components, button batteries Chemical industry; Mothballs, aromatic balls, chemical fertilizer tablets, mosquito-repellent incense tablets, catalysts, disinfection tablets, powder Metallurgical ceramics industry: catalyst, metallurgical powder granules, ceramic granules, metal sheet

Structure characteristics of tablet press 1, this machine for tablet on the upper structure, its composition mainly, in the mold, the impact on three parts, become an organic whole repeatedly around 19 pay die equally arranged in the rotary table, up and down on the edge of the tail end of the push rod embedded in the curve of the fixed guide rail, when rotary table for rotary motion, rushed up and down the guide with the curve rail for lifting movement tablet and to achieve. 2. Main working processes are as follows: (1) Filling; (2) tablet compression; (3) out of the film. Three programs are carried out continuously. There are adjustment and control mechanism for filling and tablet pressing. There are instructions for operation. 3, The machine adopts flow grid feeding mechanism, can make the material evenly filled with die hole, reduce the sheet weight difference. 4, the motor is installed in the frame, the triangular belt drives the worm to drive the turntable, and the mo

The turntable part of a tablet press The turntable of the rotary tablet press is a circular disk, and the punching rod holes and the middle die holes are evenly distributed in the surrounding areas. When it rotates under the drive of the main shaft, each punch rod moves up and down along the curved guide rail, thus completing the tablet pressing process. The turntable is the main working part of the tablet press. In the continuous working process, the analysis and solution of its common faults are given. (1) the coaxiality of the two holes caused by long-term wear of the punch hole or the middle die hole does not meet the requirements: in the process of use, the punch hole and the middle die hole due to different degrees of wear will likely appear different axial phenomenon, so that the punch rod up and down movement friction resistance increases, serious will lead to normal compression. If the wear is not very serious, the coaxiality can be restored by using reamer to punch the

Control system of tablet press (1) The electrical control of the whole machine adopts PLC controller and variable program control, which has many automatic control functions such as pressing sheet overload stop, chip hopper short of material stop and so on. (2) The double detection of photoelectric switch and pressure sensor ensures the automatic picking of missing chips. First of all, the use of photoelectric sensing, in case of missing chip or chip location is not accurate will immediately send out abnormal signals; Secondly, the pressure sensor will also emit abnormal signals when it encounters underpressure. When abnormal signal occurs in any unit of this dual detection, the PLC controller will start the tick program to complete the tick action. In order to ensure the failure of the photoelectric sensor can still complete the detection, a second set of photoelectric sensor is added to make the core content of the chip reach 100%. (3) Based on the core laminating machine in

Tablet press selection According to the production process and quality requirements of drugs, the selection of the tablet press is mainly from the following aspects: (1) According to the characteristics of powder and particle, choose the appropriate tablet press (mainly Chinese medicine or western medicine, the proportion of ingredients of raw materials, etc.); (2) Determine the output of equipment according to capacity and reserved capacity; (3) Select the appropriate charging system according to the existing process; (4) According to the production records and deviations, equipment maintenance frequency and equipment control points in the production process of the product in the past; (5) the operation is convenient, reliable, there is a necessary adjustment device. Such as mechanical regulating device, filling regulating device, pressure regulating device, speed regulating device, sheet thickness regulating device, etc. (6) The design of the tablet pressing room shall meet th

Tablet press die ordering matters needing attention In order to make the drug factory users can order the appropriate die, this paper makes some simple introduction.at the same time, it is suggested that the drug factory users can have full discussion with the die manufacturer to reduce the possible problems during production. 1. Due to some characteristics of track design and processing technology, it is suggested that users must choose products from the same factory for tablet press and die. Do not blindly pursue cheap and buy inferior die, then lead to the damage of the tablet press. 2. The choice of the tablet type: the correct choice of the tablet type is a successful step of the press die. For example, chewable tablets require higher hardness, and can be easily chewed, and most of the beveled flat tablets are selected; Shallow concave for film coating is optional. Because there is no adhesive and lubricant in the raw material of Chinese medicine tablets, it is required t

Fatigue fracture of tablet press die The punching die of the tablet press is a part of repeated motion, and the probability of fatigue fracture exists. Once the die breaks in the work, the consequence is very serious. Therefore, the fatigue fracture of the die should be strictly prevented. We know that the fatigue fracture of steel has a development process of crack formation, expansion and fracture, and the formation stage of fatigue fracture generally accounts for 70%~80% of the fatigue life. Therefore, preventing the premature formation of fatigue crack is the key to improve fatigue fracture. Fatigue fracture is the part under the action of cyclic load, starting from some weak links, the weak links of the punching die is in the punch arc transition which is easy to produce stress concentration, to prevent the formation of fatigue crack, the first is the selection of the punching die, that is, the punch and the punch body arc can not be too small; Secondly, the roughness of the