Fully enclosed tablet press 5

The rotary machine complies with GMP standards, and the tablet pressing room is separated from the transmission mechanism. The parts that come into contact with the drug are made of stainless steel materials or have special surface treatments, which are non-toxic and corrosion-resistant. The tablet pressing room is sealed with transparent organic glass to prevent contamination. The surface is smooth everywhere and easy to handle. And a frequency converter is used for speed regulation, allowing for arbitrary speed control in order to delay or shorten the instantaneous holding time of tablet molding.

1、 Application Description and Scope of Rotary Tablet Press

1This machine is a miniaturized machine based on the automatic rotation and continuous tablet pressing machine used in production. It is mainly used for process research in industrial sectors such as pharmaceuticals, chemicals, food, electronics, etc., and is an important equipment for confirming whether granular raw materials can be pressed into tablets.

2This machine is suitable for pressing into tablets（Within the pressure range of this machine）Yes, and the powder content is also high（100目以上）not exceed10%The pressing of granular raw materials.

3This machine is suitable for pressing4～12Millimeter shaped, irregular, and engraved tablets.

4This machine is not suitable for pressing semi-solid, wet particles, low melting point moisture absorbing materials, and non granular powders.

1Turntable structure: The turntable is the main executing component of the machine's operation. It consists of main components such as upper and lower bearing components, spindle, and turntable. The main shaft is supported on bearings and driven by a worm gear pair, connected by splines, to drive the main shaft and rotate the turntable.

2Track mechanism: The track consists of a cylindrical cam and a planar cam composed of an upper track and a lower track, which are the trajectories of the upper and lower punch rods. The upper track consists of multiple tracks, including upward upward track, upward downward track, upward parallel track, upward parallel track, and downward track. They are respectively fastened to the upper track plate. The lower track consists of a downward upward track, a downward downward track, and a filling track. They are installed separately on the lower track seat.

3Filling adjustment device: Filling adjustment is used to adjust the weight of tablets. The filling adjustment mechanism device is located inside the main body, and a moon shaped filling track can be observed on the plane of the main body. It controls the filling amount by rising or falling through the action of a spiral. When the disc is rotated for adjustment, the filling amount of the clockwise needle decreases, and vice versa increases.

4Sheet thickness（pressure）Adjustment device: Adjust the thickness of the sheet by adjusting the up and down of the pressure wheel（pressure）The lower pressure wheel is installed in the groove of the main body, which is sleeved on the eccentric shaft and connected to the handwheel at the outer end. When the external handwheel is adjusted, the eccentric shaft drives the pressure wheel to rise and fall, that is, to adjust the thickness of the adjustment plate（pressure）In order to control the thickness and hardness of the tablet, adjusting the upper pressing wheel up and down can also be used as an adjusting device, but it is generally not adjusted.

5Feeding device; The device consists of a feeding hopper, adjusting screws, and a feeder. The feeder is a moon shaped grid feeder, which is installed on the turntable. The gap between the feeder and the turntable working surface, as well as the height of the hopper, are adjusted according to the flowability of the particles.

6Transmission device: The transmission part of the machine is composed of an electric motor, synchronous belt pulley, worm gear reducer, test handwheel, etc. The electric motor is installed on the motor base of the base plate. After the motor starts, it transmits power to the reduction worm gear pair through a pair of synchronous belts. The electric speed is adjusted through AC variable frequency stepless speed regulation. Open both sides or the back door to directly observe and access these parts.

7The shell part: The outer shell of the machine is fully enclosed and meets the requirementsGMPrequirement The upper part is surrounded by four windows for easy cleaning and maintenance. The lower part is enclosed by a stainless steel door, which is usually locked and closed. This door is only opened during maintenance and installation of the die. Install an operation console on the front of the machine. The tablet pressing room is separated from the machine transmission part by a stainless steel enclosure, ensuring the cleanliness of the tablet pressing room and protecting the transmission parts from powder contamination and corrosion.

1Installation and adjustment of stamping dies:

1.1Preparation before installing the die: remove the hopper and feeder. Open the right door and turn the handwheel to clean the turntable working surface, mold holes, and the required installation die. Rotate the pressure adjustment wheel to adjust the pressure to the minimum. Remove the down loading and unloading rail.

1.2Installation of the middle mold: Rotate the fastening screws of the middle mold on the turntable out of the outer circle of the turntable1About millimeters, be careful not to touch the powder suction nozzle and other components, and avoid touching the head of the screw when installing the middle mold. The middle mold device is relatively tight, so it should be placed steadily. Insert the punching rod into the upper punching hole and gently insert it. After the middle mold enters the mold hole, if its plane is not higher than the turntable plane, it is qualified, and then the screws are tightened.

1.3Installation of Upward Punch: First, remove the tongue fitting, then insert the upward punch rod into the hole. Rotate the punch rod with your thumb and index finger to check the flexibility of the head entering the middle mold and sliding up and down. If there is no obstruction, it is considered qualified. Rotate the handwheel again until the neck of the punch contacts the parallel rail. After installing all the punch rods, install the tongue inserts.

1.4Downward installation: Install according to the upward method, and after installation, install the downward loading and unloading rails.

1.5Operation: After the complete set of molds is installed, turn the handwheel to rotate the turntable2Zhou, observe the entry of the upper and lower punch rods into the middle mold hole and their movement on the track. No jamming or collision phenomenon is considered qualified. Pay attention to the highest point（At the point of release）It should be higher than the working surface of the turntable0.1～0.3Millimeters. Close all doors, start the motor, and run it idle2Minutes, wait for smooth operation before use.

2Installation and adjustment of feeder: Install the feeder on the feeder support frame, then tighten the rolling screw, and adjust the adjustment screw to ensure that the gap between the bottom of the feeder and the worktable of the turntable is0.05～0.1Millimeter, tighten the rolling screw, then adjust the height of the scraper plate to make the bottom plane level with the working surface of the turntable. Tighten the screws.

3Adjustment of filling amount: The filling adjustment is controlled by the adjustment handwheel installed on the right side of the front of the machine, and there is an indicator mark on the side of the handwheel. When the handwheel rotates clockwise, the filling amount decreases, and vice versa increases. When adjusting, attention should be paid to ensuring that there are sufficient particles in the feeder and adjusting the pressure to give the film sufficient hardness for weighing.

4Tablet thickness（pressure）Adjustment: tablet thickness（pressure）Adjustment is controlled by the adjustment handwheel installed on the left side of the front of the machine, with an indicator mark on the side of the handwheel. When the handwheel rotates counterclockwise, the thickness of the tablet decreases（pressure increases）On the contrary, the thickness of the tablet increases（pressure reduction）After adjusting the filling amount, check the thickness and hardness of the tablet, and make appropriate adjustments until it is qualified.

5Adjustment of powder conveying amount: adjust the amount of particles when the filling amount is properly adjusted. Firstly, loosen the screws on the side of the bucket frame, then rotate the adjustment screws on the bucket frame to adjust the distance between the hopper mouth and the working surface of the turntable. The distance is generally considered qualified if the accumulated amount of particles in the feeding mouth does not overflow. After adjustment, tighten the screws.

6Speed selection: The method of adjusting speed is relatively simple. Simply rotate the adjustment knob clockwise to increase the speed, and vice versa to decrease the speed. The key is the choice of speed, which has a direct impact on the machine's service life, tablet weight, and tablet quality. Due to the properties, viscosity, moisture content, particle size distribution, and sheet size of particles, as well as different pressures, a unified determination cannot be made and can only be made based on actual conditions and the experience of technical personnel. However, in general, if pressing materials with high mineral and plant fiber content, large diameter, and poor viscosity, it is advisable to use low pressure pressing. The maximum speed is generally not more than25turn/Divide. On the contrary, if suppressing particles with good viscosity, fluidity, small particle size, and easy formation, a higher speed can be chosen. *The compression speed can be obtained through pressure testing and adjustment. It is recommended that the speed during continuous compression should not exceed the maximum rated speed80%.

1Operation panel:

2Operation steps: Open the electrical box door, close the power switch, the indicator light on the operation panel will light up, press“run”Press the key and slowly rotate the variable frequency knob to increase the speed. If you need to stop urgently, press it once“stop”Press the key, and the tablet press will immediately stop running. After the tablet pressing is completed, open the electrical box door and cut off the power supply.

1The upper and lower pressure wheel axles are shifting: the pressure wheel axle is worn due to oil breakage, and the wear is slight. After repair, add oil. Severe wear and tear, replace immediately.

2Wear and tear on the upper track:

2.1Dry grinding caused by oil interruption resulted in mild damage to the track surface, which should be repaired in a timely manner. If the damage is severe, it should be replaced.

2.2Poor enamel can only be lubricated with engine oil between the track and the punch rod30#Apply gear oil or compressor oil with a brush before starting up.

2.3If there is too much dust and it causes lifting and abrasion on the upper track, the granulation process should be changed to ensure the particle content（00目以上）exceed10%.

3Exceeding the weight difference limit:

3.1The feeder is worn or installed incorrectly. Please replace the feeder if it is worn out. If the installation is improper, adjust it in a timely manner.

3.2If there is a problem with the punching die, check the total length of the upper and lower punching rods. If it exceeds the tolerance range, stop using it.

1The general lubrication of the machine's components is equipped with oil nozzles on the surface of the device, which can be filled with lubricating grease and mechanical oil according to the type of oil cup. It should be refilled before each drive. It can be added midway according to the temperature rise and operation of the bearing.

2Add mechanical oil to the worm gear box, usually used in summerN46Winter selectionN32The appropriate oil level is when the worm penetrates one tooth surface, and the oil level can be observed through a viewing window. Use for about six months and replace with new oil.

3Lubricate the upper track disc with mechanical oil by brushing it with a brush before each use.

4For punching rods and tracksN32Mechanical oil lubrication should not be excessive to prevent oil contamination from seeping into particles and causing pollution.

1Regularly inspect the components and conduct monthly checks1-2Next, check whether the various moving parts such as worm gear, worm gear, bearing, pressure wheel, crankshaft, upper and lower rail guide rotate flexibly and wear out. If any defects are found, they should be repaired and used in a timely manner.

2After a single use or shutdown, the remaining powder should be removed and the residual powder of each component of the machine should be brushed clean. If the downtime is long, all the stamping dies must be removed and the machine must be wiped clean. The smooth surface of the parts should be coated with anti rust oil and covered with a cloth canopy.

3The maintenance of the punching die should be placed in a box, so that all the punching dies are immersed in oil and kept clean to prevent rust and damage. Customized boxes can be packed in each specification to avoid installation errors during use and to help grasp the damage situation.

4The place of use should be regularly cleaned, especially for pharmaceutical and edible tablet manufacturing, where there should be no dust or flying dust present.

5Electrical components should be maintained, regularly inspected, and kept in good working condition. The cooling fan should be regularly cleaned of dust with compressed air.

6Electrical components should pay attention to the working environment conditions（temperature, humidity）In a good environment, the service life of components will be extended.

7The maintenance of electrical components should be carried out by professional technicians, especially for frequency converters, which should be handled with care. Generally, they should be sent to professional manufacturers for maintenance.

8Before conducting insulation tests on the electrical components of the machine, all control wires of the main circuit of the frequency converter must be removed to prevent damage to the frequency converter during the insulation test. The insulation testing method for the frequency converter can be found in the frequency converter operation manual.