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

Pressing wheel failure of tablet press and its solution The pressing wheel part can be divided into the upper pressing wheel and the lower pressing wheel, which is also the device to adjust the pressure of tablets and increase the protection. The common failure problems are: (1) pressure wheel wear (2) the pressure wheel shaft bearing is short of oil or damaged Analysis and solutions: (1) the serious wear of the outer circle of the pressure wheel leads to large positive force at the tail of the punch rod. The pressure wheel must be replaced. When the inner hole of the pressure wheel and the pressure wheel shaft are seriously worn, the pressure wheel or the pressure wheel shaft must be replaced. In addition, sometimes the fracture of the press wheel shaft is mainly caused by excessive pressure. Most of the fracture is caused by improper adjustment of the material pressure. At this time, the press wheel shaft needs to be replaced, the material needs to be adjusted and the

The turntable failure of tablet press and its solution The turntable of the rotary tablet press is a circular disc, and the punching rod holes and the middle die holes are evenly distributed in the periphery. When the punching rod rotates under the drive of the main shaft, the punching rod moves up and down along the curved guide rail, so as to complete the tablet pressing process. The rotary table is the main working part of the tablet press. In the continuous working process, the common failure problems are: (1) punch hole or die hole after long-term wear caused by two holes coaxiality does not meet the requirements (2) The upward movement of the turntable affects the filling or the flake release (3) the loosening of the top wire of the middle die causes the upward movement of the middle die (4) the top wire of the middle die does not work Analysis and solutions: (1) in the process of use, punching rod hole and die hole due to different degrees of wear will likely appear diffe

Stretch film continuous sealing machine adjustment method In order to adapt to different bag specifications and thicknesses, continuous sealing machine makes the conveying table height, sealing temperature, sealing machine running speed and so on adjustable during production. The following is a summary of the methods of continuous sealing machine to adjust each part 1. Adjustment of conveying table height: loosen the adjusting nut of hanging wheel height with crescendo plate, then loosen the adjusting knob of conveying table height cutting, pull the conveying table upward with both hands to the desired position, tighten the adjusting button of conveying table height and adjusting nut of hanging wheel height. 2.conveyor in and out adjustment: if need to adjust the conveyor in and out, loosen the two sides of the conveyor out adjustment knob, two hands to move the table outside, move to the required position, tighten the two conveyor in and out of the cutting knob. 3.vertical

Compressibility of tablet material Compressibility refers to whether the material is easy to compress into sheet performance. The formability of the material can be evaluated by hardness, tensile strength and elastic recovery rate of the tablet. The tablet should be of the right hardness and should also ensure that the tablet disintegrates quickly or that the drug dissolves too quickly. When the content of the main drug in the tablet is small, pharmacy method should be used to achieve the purpose of uniform distribution of the drug, under normal circumstances, it is appropriate to use simple excipients; When the content of main drug in tablets is large, attention should be paid not only to the fluidity and compressibility of excipient, but also to its capacity and the amount of excipient, and also to the influence of particle size and form of active ingredient on the compressibility. Compressibility is related to the plasticity and elasticity of raw materials and the microscopic stat

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

Tablet press started 1) Turn the main power switch of the tablet press clockwise to rotate it from the horizontal state (OFF state) to the vertical state (ON state). At this time, the touch screen ON the panel starts to work. 2) Press the blue reset button (R) on the control panel. 3) Turn the power switch on the control panel clockwise, turn it from off position (O) to open position (│ 0), then the digital tables on the panel start to work. 4) Set the time and other parameters of each step in the tablet pressing process on the touch screen. 5) Rotate the pressure adjusting handle to set the pressure of the platen (it should be set when the platen is closed). 6) Press the temperature adjustment button of the temperature controller on the operation panel to set the temperature of the upper and lower platens. 7) Set cooling parameters on the programmed cooling controller (programmed cooling) or the touch screen (rapid cooling) on the operation panel. 8) Start the

Main mechanism of tablet press 1. Structure of the turntable: the turntable is the main implementation of the machine. It is composed of upper and lower bearing assembly, spindle, turntable and other main parts. 5 (7,9) punch dies are evenly distributed on the circumference of the turntable, and the torque is transferred between the turntable and the spindle by the flat key. The spindle is supported on the bearing, driven by the worm gear pair and connected by splines. The spindle is rotated to make the turntable rotate. 2. Track mechanism: the track has the cylinder CAM and plane CAM composed of the upper track and the lower track, which is the track of the upper and lower stroke rod movement. The upper track is composed of up rushing up track, up rushing down track, up rushing up parallel track, up rushing down parallel track, down track and so on. They are fastened on the upper track disk respectively. The lower track is composed of upthrust downthrust track, downthrust upthrust t

Preparation of tablet press before production ① Check whether there is a clearance mark in the operation room, and whether the tools and containers are clean and dry within the validity period. Otherwise, the clearance shall be carried out according to the clearance standard operating procedures and passed the OA inspection, and the clearance certificate shall be filled in before the next operation can be carried out. ②according to the requirements to choose the appropriate tablet equipment, equipment to have a "qualified" sign, "has been cleaned" sign, and check the condition of the equipment, confirm that the equipment is normal, can be used. ③Clean equipment, containers, tools, workstations. Adjust the electronic balance to check whether the mold is clean and dry, and whether it meets the production instructions. If necessary, wipe it with 75% ethanol for disinfection. ④Fill in the material requisites according to the production instructions, and get the tablets with particles f

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