Punch processing of the tablet press If the punch head is broken or the punch tail is broken, it may be due to improper heat treatment of the mold, its own damage and cracks have not been carefully checked, and it cannot bear the excessive pressure or pressure of the press. If the fatigue limit of the mold itself is exceeded, it may lead to fracture. Improve the heat treatment method of punch, strengthen the stamping quality control, adjust the pressure, pay attention to the visual inspection of tablet. At the same time, the service life of the mold can not be unlimited, generally in 30 million to 50 million pieces or so, must be scrapped, have to replace the new, old, easy to wear tail mold can not be used. The upper pulse is easy to hit the feeder, and the lower pulse is easy to hit the orbit. If a fault occurs, damage to the feeder or the discharge track is prone to greater problems. So often check the mold, replace the old mold in time. In addition, shock absorbers can be add

Comparison of the feeding mode of the tablet press The feeding system of the tablet press can be generally divided into three types: the boottype feeding system of the single punching machine, the monthly feeding system of the ordinary rotary tablet press, and the forced feeding part of the press at low speed. Comparison of the structure and characteristics of the single stamping machine system and stamping process The main structure of the shoe material system, the feeding machine for the shoe shape, driven by the CAM, CAM on the die surface swing from side to side, to complete the feeding, scraping, pushing and other operations. The working process of shoe material system is given. Lift the upper punch, reduce the diameter of the die punch to the appropriate depth, the weight of the particles is exactly equal to the weight of the tablet, swing the feeder on the die, then fill the die hole, and fill the die with particles; The feeder is separated from the die hole so that

The turntable of the tablet press The turntable of the rotary press is a disk, in which the rod holes and the intermediate die holes are evenly distributed on the whole circumference. With the rotation of the spindle, each impact rod moves up and down along the curved guide rail to complete the tablet pressing process. The turntable is the main working part of the tablet press. Analyze and solve common faults during continuous operation: (1) and intermediate stem hole die because of long time wear two hole alignment is not in conformity with the specification: in the process of work, the friction resistance may occur as a result of the different coaxial phenomenon, make transmission punch moving up and down friction increases, increase due to drive down rod between the different wear phenomena may occur in use process, can lead to can't normal operation. In less severe wear, the rod's coaxiality can be restored by drilling through the hinge, and in very severe wear, the turntable

The regulating system of the tablet press Regulating system includes pressure regulating system and filling regulating system: (1) Adjustment failure: The adjustment failure is usually due to the loosening of the screw on the handle, which makes the handwheel supervision efficiency low, or the reason that the adjusting wheel gets stuck. Now we need to check the adjusting handwheel and adjusting screw, which can be solved by fixing screws, rotating bolts and other lubrication measures. (2) The main reasons for the unstable filling are: uneven granulation or poor material mobility, insufficient adjustment of hopper height, insufficient grille filling behind the feeder; The precharged rail of the charging rail group is seriously worn and has a jump change, so the charging rail group must be replaced at this time. The derrick of the complement group is badly worn, which causes the gap of the complement group to be large. In this case, the filled track group must be replaced; The l

Abnormal sound of the tablet press Rotary tablet pressing machine is a single automatic rotary continuous tablet pressing machine developed and developed by our factory. It will be granular raw materials pressed into a variety of ordinary shape tablets and special-shaped tablets, equipped with transparent observation window, can clearly see the working conditions of the machine and can be opened, easy to internal cleaning, maintenance, repair and so on. The abnormal sound of the general tablet press has the following reasons: 1. When the synchronous belt pulley is not parallel, it will cause friction or even damage, resulting in abnormal sound. The solution is to adjust the motor so that the synchronous pulley on the main shaft and the synchronous pulley on the worm shaft are parallel. 2. The increase of friction is caused by the lack of oil in the reduction box, resulting in noise. The lubricating oil should be checked regularly and added in time; 3. Slight friction between the tu

Preparation of the tablet press before operation Check that rooms, equipment, accessories, etc. are clean as required. Check whether the transmission parts and joints of the equipment are loose, blocked or magnetic, and deal with any faults in time. Check the clearance of each anchor point for compliance. Before use, open the upper cover of the worm case and inject the oil. The height of the oil should not exceed the non-surface line. (View boxes are represented by red lines) Check each machine to adjust the position of the line, turn the steering wheel, observe the stamping operation. After each cleaning, use the handwheel for one week before starting the machine and confirm the abnormal situation. Check that stamping parts are properly installed, tools and other components are on the machine, and that all protection and protection devices are properly installed. Check whether the granule raw material is ultrathin and wet, if there are two phenomena should not be starte

Preparation for the operation of the tablet press After the mold is installed, turn the steering wheel by hand and make the steering wheel rotate 2-3 times to observe the abnormal friction noise of the up and down impact lever on each track and each hole. The machine must have reliable ground wiring, connecting five wires to a three-phase power grid. The external vacuum cleaner is connected to the main machine. Turn on the main power switch, and the power indicator is on with the speed of 0. Press the start button of the vacuum cleaner and the operation indicator of the vacuum cleaner will light up. Now test the air capacity in the vacuum cleaner. Turn on the light switch on the screen and turn on the pressed light. In order to prevent the press from reaching the maximum speed immediately after starting, which may lead to negative overload of the press, the necessary working speed must be determined before the press runs. Press this key, or you can set the turntable speed you

Save the die of the tablet press In the process of our drug production, the quality of the press die plays a crucial role. For example, when the punch hole is enlarged, the uneven weight will cause the drug to fail to meet the standard or produce cracks. The difference of the length of the tablet directly affects the difference of the weight and hardness of the tablet, and the uneven punch causes the crack or the fragmentation of the tablet; The punch has a curling edge or uneven, the effect will cause cracks, adhesive punch and so on. Therefore, in daily management, attention must be paid to the routine maintenance, maintenance and storage of molds to ensure the quality of tablets. In the daily management, I summarized the following process, hoping to be helpful for the daily maintenance, maintenance and storage of the die. 1. Newly purchased molds shall be checked and accepted by the workshop mechanic. After passing the audit, the unit leader shall confirm again, complete th

The tablet problem of the tablet press That is to say, when the pressing machine is running, the up and down movement may be abnormal, mainly because of the strong bond between the material and the mold, or even has occurred. This may be due to the high viscosity of the material, or due to the high humidity in the room, or due to the increased viscosity of the material as it absorbs moisture from the air, or due to insufficient lubricants or short mixing times. You can reduce the water content of the material, or choose a less viscous binder, or increase the amount of lubricant, or in small tissues, increase the amount of lubricant. One possible reason for the jumpers is that the speed of rotation on the table is so high that when the table and cover are rotated too strongly, the impact occurs, and this is enough to slow the table down. Rough edges, protruding edges of the tablets, are part of the working tablets that have redundant edges that can sometimes be pulled off by ha

The problems and methods of the tablet press The disintegration delay in the tablet pressing process may occur in the tablet pressing machine, which means the disintegration time exceeds the pharmacopoeia. Reasons for disintegrating delay: insufficient amount of disintegrating agent; high viscosity of adhesive; high amount of hydrophobic lubricant; high pressure; high hardness of tablet. Solution: choose good disintegrating agent, or increase the dosage, reduce the adhesive dosage, or replace the adhesive with small viscosity, add hydrophilic lubricant, adjust the pressure of the tablet press. Reasons for the big difference in weight: particle size, flow rate, not flexible down and rise, too much or too little charge. Solution: re-granulation, add flow AIDS, stop check, adjust the hopper to make the same amount of packing. Discoloration or spot refers to the change of hydrochloric acid on the surface of the tablet or the appearance of different color spots, pitting.