Automatic tablet press installation, commissioning and disassembly

1 Preparation before installation

1. The tablet press is installed on a solid wooden workbench (it can also be installed on a cement table) and fixed with three M12 anchor screws. The height of the work table to the ground is about 600mm (by hand, easy to operate). In order to facilitate disassembly and repair, there should also be a hole with a diameter of about 35mm on the wooden workbench corresponding to the position of the lower punch core rod.

2. Connect the motor to the ground wire before connecting the motor power supply to ensure safety. Remove the V-belt, turn on the power supply of the motor, start the motor to observe whether the rotation direction of the motor is correct (the rotation direction of the motor shaft should be opposite to the arrow direction on the protective cover or hand wheel). If the rotation direction is wrong, connect separately and then install the V-belt.

3, the machine mold installation workers have large pliers, tool wrench, hexagon wrench hand

2 Installation of punching die

1) Installation of upper die

Unscrew the punch fixing screw, turn the hand wheel to raise the punch core rod to the highest position, insert the punch rod into the hole of the punch core rod (pay attention to align the notch slope of the punch rod with the punch fixing screw and insert it to the bottom), and finally tighten the punch fixing screw.

2) Installation of middle die

Loosen the fixing screw of the middle mold, lay the middle mold flat into the hole of the middle mold platen, at the same time make the underpunch into the hole of the middle mold, press to the bottom, and then tighten the fixing screw of the middle mold. When placing the middle mold, pay attention to leveling the middle mold to avoid jamming and damaging the hole wall when placing it askew.

3) Installation of lower die

Loosen the upper punch fastening nut, insert the upper punch core rod into the hole of the upper punch core rod to the end, and use a wrench to clamp the hexagon at the lower part of the upper punch core rod and tighten the upper punch fastening nut.

After the die is installed, turn the hand wheel by hand to slowly lower the upper punch into the middle die hole, and observe whether there is collision or friction. If collision or friction occurs, loosen the fixing screws (two) of the middle die platen, and adjust the fixing position of the middle die platen to make the upper punch enter.

In the middle die hole, tighten the fixing screws of the middle die platen again, and adjust in this way until the upper punch enters the middle die without collision or friction before the installation is qualified.

3 Installation sequence

Installation sequence of punching die and lower hopper: lower die-middle die-platen-upper die-lower hopper

4 Commissioning

1) Adjustment of the film

Rotate the handwheel to raise the lower punch to the highest position, and observe whether the lower punch surface is aligned with the plane of the middle die (high or low will affect the film). If not, loosen the butterfly screw, loosen the gear pressure plate to convey the upper adjustment gear, make the lower punch surface aligned with the plane of the middle die, and then still press the pressure plate on and tighten the butterfly screw.

At this point, the hand wheel is cranked by hand, and the empty car runs for more than ten revolutions. If the machine runs normally, the material can be added for pressure test and the next adjustment can be carried out.

2) Adjustment of filling depth (I. e. adjustment of tablet weight)

Loosen the butterfly screw and loosen the gear pressure plate. Turn the lower adjustment gear to the left to raise the lower punch core rod, and the filling depth is reduced (the weight of the tablet is reduced). After adjustment, press the gear pressure plate and tighten the butterfly screw.

3) Adjustment of pressure (I. e. adjustment of tablet hardness)

Loosen the connecting rod lock nut, turn the upper punch core rod, turn left to move the upper punch core rod downward, the pressure will increase, and the hardness of the pressed tablets will increase; on the contrary, turn right, the pressure will decrease, and the tablet hardness Decrease, after adjusting, use a wrench to jam the hexagonal lower part of the upper punch core rod, and still lock the connecting rod lock nut.

At this point, the adjustment of the stamping die is basically completed, and then the motor is started to test more than ten pieces. If the quality of the pieces such as weight, hardness and surface finish is qualified, the materials can be put into production. During the production process, the quality of tablets must still be checked at any time and adjusted in time.

5 Removal of die

1) Remove the upper punch: loosen the upper punch fastening nut to pull out the upper punch rod. If the fit is tight, the upper punch rod can be pulled out by clamping it with pliers, but pay attention not to damage the edge of the punch.

2) Remove the middle mold: loosen the fixing screw of the middle mold, unscrew the down-punching fixing screw, loosen the butterfly screw, and loosen the gear pressure plate. Move the adjusting gear to make the lower punch core rod rise 10mm, gently rotate the hand wheel to make the lower punch core rod push out a part of the middle die, and take out the middle die by hand. If the middle die fits tightly in the hole, do not rotate the hard top of the hand wheel forcefully to avoid damaging the parts. At this time, the middle die plate must be removed and then the middle die is taken out.

3) Remove the underpunch: first unscrew the underpunch fixing screw, then turn the hand wheel to raise the underpunch core rod to the highest position, and then pull out the upper punch rod by hand. If the fit is tight, it can be clamped out with hand pliers (be careful not to damage the edge of the punch).

4) After the die is disassembled, the adjusting gear must be rotated to make the lower punch core rod retreat by about 10mm. When the hand wheel is rotated to make the lower punch core rod rise to the highest position, its top end is not higher than the bottom surface of the middle die platen (this step should not be ignored, so as to avoid the accident of collision between the lower punch core rod and the middle die when used again). Finally, still screw on the undershoot fixing screw.