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  • The structure and shape of the die of the tablet press The punching die is a tablet press mold for pressing tablets. The working end faces of up and down punching form the surface shape of tablets. The diameter of the middle die is the diameter of tablets. Die is an important task of the tablet machine components, usually including a pair of die, in the mold, the impact on three parts, rushed up and down the structure similar to that of the punch diameter are equal, the upper and lower diameter of punch and die die in combination, can free sliding up and down, in the die hole in but can not exist leakage clearance of powder. According to the structure and shape of the die, it can be divided into circular and special-shaped (including polygons and curves). The shape of the end face of the punch is flat, hypotenuse, shallow concave, deep concave and comprehensive shape, flat and hypotenuse punch is used to suppress flat cylindrical tablets, shallow concave is used to suppress double c

    2021.06.03

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  • Check the tablet press before use 1, before use must be repeated to check the quality of the die, whether there is a lack of edge, crack, deformation and loose incomplete situation and whether the device is complete and good work. 2,Check whether the powder of the granule raw material is dry and the powder content in the granule is not more than 10%. If unqualified do not hard press, otherwise it will affect the normal operation of the machine and service life and raw material loss. 3, for the first time commissioning should be needle placed 6, pressure regulator control instructions will FenZi inside bucket, turn the commissioning the handwheel by hand, adjust the filling and pressure at the same time, gradually increase to the weight of the tablet and the degree of hard and soft to fulfill the requirements of the finished product, and then start the motor, first to open the clutch, an official production operation, in the process of production, must be time to sample the qu

    2021.05.28

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  • The tablet press runs by punching The method to reduce dust during up-punching operation and tablet pressing: (1) increase the auxiliary mechanism can adjust the depth of the upper punch into the middle die hole, reduce the "powder" when pressing. (2) a single layer of suction dust suction nozzle is changed to be able to suck on the stamping sheet when "powder", after the feeder scraping powder on the surface of the turntable fine dust double suction nozzle. (3) a cover is added at the upper mouth of the piece discharge groove or a dust suction port is added on the cover to be connected with the powder suction nozzle to prevent the diffusion of dust during the top piece and the piece discharge. (4) a cover plate is added on the feeder. 1) This method is not used in the forced feeder, but the feeding port of the hopper and the powder inlet of the forced feeder are connected with a soft connection to seal the feeding port of the hopper to the inlet pipeline of the forced f

    2021.05.24

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  • The device that the tablet press should have 1. The fluidity of fine powder in the device of oscillating feeding powder or forced feeding powder is always not as good as that of particles. It is easy to appear holes in the feeder or flow fast or slow, resulting in a large difference in sheet weight, and the device can make the powder evenly flow into the die hole. 2. Because there is more air in the powder than in the particle, it is easy to produce top crack when pressing the tablet. The solution is to reduce the speed of the tablet, the second is the second compression, that is, the first time for the initial compression, the second time for the final compression into tablets. Due to the increased compression time, it is beneficial to discharge the air in the powder, reduce the phenomenon of fragmentation, and increase the hardness of the tablet. 3. Good sealing and dust removal device because of the powder has flying, the powder directly press tablet, will produce more d

    2021.05.14

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  • Pressure on the die of the tablet press 1. the pressure of the die is directly related to the material, of course, the use of hard, wear-resistant materials can significantly increase the pressure of the die can withstand a lot, the pharmaceutical industry (global) is more common S-7, of course, the cost is relatively high, in addition to the expensive raw materials, processing costs are also high; The price of several other domestic materials is low, and the domestic suppliers are more commercial. This is why the domestic punching die can be sold at a lower price. 2. The pressure that the die can bear is proportional to the area of the cross section of the punch, which is better to understand; 3. The high pressure that the die can bear is not based on experience, but needs to be measured and calculated: this result is usually included in the factory test certificate or instruction manual by the supplier; And I want to explain is that can withstand the pressure and you don't d

    2021.04.13

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  • The factors of adhesive punch appear in the tablet press Particle moisture content is too high: LOD of materials can be detected before formal tablet pressing, which is particularly important for products that are easy to absorb moisture. Whether the mixed particles are directly pressed or the mixed particles after granulation, there is a risk of water absorption again in the intermediate storage process. Insufficient amount of lubricant or unmixed: the influence of lubricant amount and mixing time on the product can be investigated in the prescription exploration stage, such as 3min, 5min, 7min, etc.; Indoor humidity is high, with hygroscopic materials especially need to pay attention to indoor humidity, can increase the dehumidification equipment, keep indoor humidity to a reasonable number, if not fall down, also can add a certain amount on tablet press turntable desiccant, or will be in front of the tablet press machine idle for a period of time (note: don't use hair dryer

    2021.03.17

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  • The die composition of the tablet press The punching die is composed of the upper and lower punch and the middle die. The punch and the die hole have good coordination. The end shape of the punch can be flat, shallow concave or deep concave, and can also be engraved on the end face with words, numbers, letters, lines, etc., to indicate the name, specifications, trademarks, etc. The line is easy to take in two or three parts. The punch and die hole section shape can be round, can also be triangular, oblong and other irregular shapes. But the size of the section is limited by the pressing side, should not exceed the allowable area of the machine, so as not to increase the pressure too much, damage the machine. The tail of the punch is a groove, which is embedded in the convex part of the guide rail or the guide rail groove when working, and makes regular up and down movement. There is a groove ring in the middle of the outer circle of the middle die, which is tightened by the

    2021.02.25

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  • Pay attention to the work of the tablet press 1. Before the use of the die must be strictly checked, there can be no cracks, missing edges and hair and other phenomena, such as forced use, it will bring damage to the machine. 2. The life of the die is generally produced one million times as the design basis. When overuse, the damage rate will be greatly increased, such as rupture will damage the feeder or other parts of the accident. 3. The feeder and the turntable table must maintain a certain gap, that is, 0. 05 1. 1 mm, the gap is too large to cause the leakage of powder, too small will make the feeder and the turntable table friction, resulting in metal powder mixed into the powder, so that the pressure out of the tablet does not meet the quality requirements, become scrap. 4. Not dry and high sugar content of the particles should not be pressed, so as not to produce sticky punch, resulting in the machine can not be normal production. 5. If the automatic stop alarm is found,

    2021.02.22

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  • The die pressure of the tablet press The pressure of the die is directly related to the material, of course, the use of hard, wear-resistant materials can significantly increase the pressure of the die can withstand, the pharmaceutical industry (global) is more common S-7, of course, the cost is relatively high, in addition to expensive raw materials, processing costs are also high; The price of several other domestic materials is low, and the domestic suppliers are more commercial, which is the reason why the domestic punching die can be sold at a lower price. The pressure that the die can bear is proportional to the area of the punch cross section, which is easier to understand; The great pressure that the die can bear is not based on experience, but needs to be measured and calculated. This result is usually included in the factory test certificate or instruction manual by the supplier; Also want to explain, is able to withstand the pressure and you don't die tablet press s

    2021.02.04

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  • The use of the tablet press Before the use of the die must be strictly checked, there can be no cracks, missing edges and hair and other phenomena, such as forced use will bring damage to the machine. Die life is generally based on one million times of tablet design, when the extended use of the damage rate will be greatly increased, such as rupture will damage the feeder or other parts of the accident. Feeder and turntable work surface must maintain a certain gap, that is, 0.05-0.1 mm. The clearance is too large to cause powder leakage, too small will make the feeder and the rotary table friction, resulting in metal powder mixed into the powder, so that the pressed out of the tablet does not meet the quality requirements, become scrap. The vacuum cleaner must be shaken several times per shift, and its powder storage hopper must be cleaned in time to prevent blockage of airflow channels. If automatic stop is found, immediately turn off the power for careful inspection. I

    2021.01.29

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