Loading and unloading of small tablet press die and adjustment during tableting
1. Installation of the die (1) Install the upper punch: loosen the lower punch and fix the screw, turn the handwheel to raise the lower punching rod to the high position of the zui, and insert the lower punch into the hole of the lower punching rod (note the notch of the lower punch) Align the bevel with the lower fastening screw and insert it into the bottom. Then tighten the lower fixing screw.
(2) Install the lower punch: Loosen the upper punching tightening nut, insert the upper punching rod into the hole of the upper punching rod, insert it to the end, use a wrench to clamp the hexagonal part of the upper part of the punching rod, and tighten the upper punching tightening nut.
(3) Install the middle mold: Loosen the middle mold fixing screw, put the mold in the hole of the middle mold plate, and make the lower punch into the hole of the middle mold, press the bottom and then tighten the middle mold fixing screw. When placing the mold, pay attention to flatten the middle mold to avoid jamming when the skew is placed and damage the hole wall.
(4) Turn the handwheel by hand to slowly lower the upper punch into the middle die hole to observe whether there is collision or friction. If there is collision or friction, loosen the middle die plate fixing screws (two) and adjust the middle die table. The position of the plate is fixed so that the upper punch enters the middle die hole, and then the middle die plate fixing screw is tightened, so that the upper punch enters the middle die without collision or friction for the installation.
2. Adjust the output of the film and turn the handwheel to raise the lower punch to the high position of the zui. Observe whether the lower punch surface is aligned with the plane of the middle die (or both high and low will affect the film). If not, loosen the butterfly screw. Loosen the gear platen and transfer the upper adjustment gear so that the lower punch surface is aligned with the plane of the middle mold. Then press the pressure plate up and tighten the butterfly screw.
At this point, the handwheel is shaken by hand, and the empty car runs for more than ten revolutions. If the machine is running normally, the pressure can be fed and the next step can be adjusted.
3, the adjustment of the filling depth (ie the adjustment of the weight of the tablet)
Loosen the thumb screw and loosen the gear platen. Turn the lower adjustment gear to the left to raise the lower punch, and the filling depth is reduced (the weight of the tablet is reduced). After adjusting, press the gear press plate up and tighten the butterfly screw.
4, the adjustment of the pressure (that is, the adjustment of the hardness of the tablet)
Loosen the connecting rod lock nut, turn the upper punching rod, turn to the left to move the upper punching rod downward, the pressure will increase, and the hardness of the pressed tablet will increase; otherwise, the pressure will decrease when the right turn, the hardness of the tablet will decrease. After adjusting, use a wrench to clamp the hexagonal part of the lower part of the punching rod, and still lock the connecting rod lock nut. At this point, the adjustment of the die is basically completed, and then the motor is tested for more than ten pieces, and the weight of the piece is checked, and the quality such as hardness and surface finish are qualified, and the production can be started. In the production process, the quality of the tablets must be checked at any time and adjusted in time.
5, the removal of the die (1) disassembly of the upper punch: loosening the upper punch tightening nut, you can pull out the upper punch, if the fit is tight, you can use the pliers to clamp the upper punch to pull it out, but be careful not to damage Punch edged blade.
(2) Disassemble the middle mold: Loosen the middle mold fixing screw, unscrew the lower punch to fix the screw, loosen the butterfly screw, and loosen the gear pressure plate. The transfer adjustment gear is used to raise the lower core rod by 10 millimeters, and the hand wheel is gently rotated, so that the lower punch core rod pushes out the middle mold part, and the middle mold is taken out by hand, if the middle mold fits closely in the hole, Do not use force to turn the hard top of the handwheel to avoid damage to the machine. At this time, the middle die plate must be removed and the middle mold removed.
(3) Disassemble the undershoot: first unscrew the lower punching set screw, then turn the handwheel to raise the lower punching rod to the high position of the zui, then the upper punch can be pulled out by hand. If it is tightly fitted, it can be pinched out with a pliers (be careful not to damage the punch edge).
(4) After the die is disassembled, the adjusting gear must be rotated to make the lower punching rod retreat about 10 mm. When the handwheel is turned to raise the lower punching rod to the high position of the zui, the top end is not higher than the bottom surface of the middle die plate. Do not ignore this step, so as to avoid the accident of the under impact of the core rod and the middle mold when it is used again. After the zui, the undercut fixing screw is still screwed on.
Disassembly and installation of the main parts of the small tablet press 1. Disassembly of the middle die plate: Pull out the powder retaining plate, remove the hopper, unscrew the set screw of the feeder, unscrew the fixed stud and spring of the feeder, and remove the feeder The middle mold platen can be removed by unscrewing the middle mold plate fixing screw and the spring washer. Installation: Refer to the reverse order above. Pay attention to alignment when screwing the feeder tightening screw. So as not to damage the wire hole of the feeder.
2. Disassembly of the upper punching rod: Loosen the connecting rod lock nut, turn the upper punching rod to disengage it from the connecting rod, turn the handwheel to raise the eccentric wheel shell to the high position of the zui, turn the eccentric shell to make the connecting rod swing to The upper punching rod can be pulled out from the upper side of the mold frame hole. Installation is performed in the reverse order described above.
3. Disassembly of the lower punching rod: Unscrew the lower punching fixing screw, the butterfly screw and the gear pressing plate rotate the adjusting gear, so that the lower punching core rod is lowered and taken out from the bottom hole of the fuselage. Installation: Refer to the reverse order above.
4. Connecting rod removal: first remove the upper punching rod, then remove the wire retaining ring on the connecting rod pin, take out the connecting rod pin, and then take off the connecting rod. Installation: Follow the reverse order above.
5. Large pulley, pinion and bridge axle disassembly: lower the V-belt, unscrew the right end of the bridge shaft and the washer (in the fuselage), and pull the large pulley together with the pinion and the bridge shaft. Then, the bridge shaft can be pulled out of the wheel hole. (The large pulley is integrated with the pinion and the bushing, and generally does not need to be disassembled). Installation: Refer to the reverse order above.
6. Spindle disassembly: The disassembly of the spindle should be carried out by two people. First remove the large pulley, then unscrew the nut to remove the lever, lever shaft and filling roller. (Remove the handwheel and camshaft if necessary) Remove the protective cover, unscrew the screws and washers, and use a wooden hammer to hit the non-working surface inside the large gear (not significant). Remove it (be careful not to lose the lifting roller), then hit the shaft end with a wooden hammer and a copper rod (be careful not to damage the shaft end screw hole), while holding the other end of the shaft and holding the eccentric wheel shell, slowly The spindle is removed. Installation: Refer to the reverse order above.
Lubrication and maintenance of small tablet presses 1. Lubrication of the friction surfaces of all moving parts is an important part of ensuring the normal operation of the machine and prolonging the service life. In particular, if the main moving parts are dry running in the absence of oil, they will be quickly damaged. It can't be used. Therefore, before using the tablet press, all the oil cups, oil holes and friction surfaces must be lubricated, and the air is running to make the friction surfaces full of oil film before they can be put into use. In the future, each shift will be refueled on time, but it should not be too much for each refueling, so as to avoid spillage affecting cleaning and staining the tablets. The fueling parts and the number of fueling are shown in the following table:
2. Before each shift, check whether the screws are loose. Also pay attention to the inspection during the work. If it is loose, tighten it immediately to avoid malfunction.

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