Rotary tablet presses are used to compress all kinds of pellets into discs and shaped sheets, which are the basic equipment suitable for mass production. Its structure is double-pressure type, with two sets of feeding devices and two sets of wheels. The turntable can be equipped with 33 pay dies and can rotate 66 shots in a single rotation.
The speed of the turntable, the filling depth of the material, and the thickness of the tablet can be adjusted when the rotary tableting machine presses the tablet. Mechanical shock absorbers on the machine can avoid mechanical damage due to overload. There is a suction box inside the machine. Through the suction nozzle, dust generated during the rotation of the machine can be sucked to avoid sticking and blocking, and the raw materials can be recycled for reuse.
Rotary tablet press structural features: [1] 1, the upper part of the machine is a tablet structure: its composition is mainly for the upper punch, the middle mold, the lower punch three parts together, around the 19 pay die uniform arrangement On the edge of the turntable, the tails of the upper and lower rams are embedded on a fixed curve rail. When the turntable makes a rotational movement, the up and down rushing is to follow the curve track to make a lift movement to achieve the purpose of pressing.
2. The main work process is divided into: (1) filling; (2) pressing; and (3) filming. The three procedures are continuously performed. There are adjustment and control mechanisms for filling and sheeting.
3. This machine adopts flow gate type feeding mechanism, which can make the material fill the die hole evenly and reduce the difference in the weight of the tablet.
4. The motor is installed in the machine seat, and the worm gear drive dial is dragged by the triangle belt, and the continuously variable transmission pulley is arranged on the motor shaft. The speed can be arbitrarily adjusted through the movement of the motor, and the use is safe and reliable without noise.
5. There is a suction box on the side of the machine frame, including a blower, a powder storage room and a filter room. When the machine is running at a high speed, the flying powder and the powder falling in the middle mold are generated, which is eliminated by the powder suction nozzle and is not sticky. Plug it in and keep it running smoothly.
Rotary tablet press construction instructions:
1, on the pressure wheel frame device
The upper cover is an integral casting. The tank is equipped with a pressure roller, which is sleeved on the crankshaft. The shaft has an arm attached to the coil spring at the outer end of the shaft. When the pressure face is over-pressurized, the eccentric torque of the crankshaft acts to compress the spring. The distance between the upper and lower pressure wheels reduces the pressure, so that the safety of the protective parts and die molds, the pressure adjustment, and the rotating flower-shaped handle change the length of the spring, so that the spring pressure is just enough.
2, on the track device
The guide plate is a disc-shaped plate, and a heat-treated guide plate piece is embedded around the guide plate. The plate is fastened with screws. The groove of the upper punching tail runs along the convex edge of the guide track and performs a trajectory lifting motion.
3, 19 hole turntable device
The turntable is an integral casting, surrounded by 19 vertical and evenly arranged die holes. The hole device 19 is provided with a die, which is integrally set on a fixed vertical shaft and is driven by a worm during operation. The whole turntable holds all the dies for clockwise rotation. .
4, drive shaft with clutch device
The drive shaft is horizontally mounted in the bearing bracket, with a worm in the middle, a test wheel in the front, a conical disc clutch in the rear, a handle control switch and parking, the clutch contact is transmitted by the pressure of the coil spring, if the load of the machine Slippage occurs when the pressure of the spring is exceeded, so as not to cause serious damage to the machine.
5, feeder device
The bucket cone bottom hopper and the moon-shaped return grille feeder feed the press wheel. The feeder device should be calibrated so that its plane should be aligned to face the end of the plane and the gap will be 0.03-0.1 mm. The gap can be adjusted by the strut device. Powder adjustment method, there is a knurled screw on the top of the hopper frame, in order to adjust the height of the hopper, control the flow of powder, its height must be based on the size of the particles and the amount of filling, can observe the accumulation of powder in the grid feeder Do not spill the quantity to be qualified. After adjustment, the side knurled screws should be tightened.
6, the main body, the lower rail, the lower pressure wheel device
The main body has a box shape. The rectangular groove is equipped with a lower pressure wheel. A heat-treated rail guide is mounted on the plane and is fastened with screws. When the lower punch is in operation, its tail is embedded in the guide groove, along with the groove. Slope for lifting movement, the end of the rail guide has a round hole, covered with a round area for the device under the red, the lower wheel is installed in the main groove, it is set on the crankshaft, the outer end of the crankshaft Helical gears and worms are connected to rotate the worm, which makes a slight rotation by deceleration of the gears. When the eccentricity of the shaft is up, the pressure roller rises, the pressure increases and the thickness decreases, so as to control the thickness and hardness of the tablet. . The mark on the watch plate corresponds to the thickness of the tablet from 0-6. Since the helical gear has a self-locking effect, it is allowed to adjust during operation, but after the adjustment, the middle flower-shaped handle should be tightened.
7, filling adjustment device
Inside the main body of the filling adjustment mechanism, a moon-shaped filling rail can be observed on the plane of the main body, which is controlled by the spiral to rise or fall to control the filling amount. The scale of the table mark on the disk is equal to 0-45. When the volume is 0.01 mm, when turning the disk to adjust, the amount of filling to the right increases, and the amount of turning to the left decreases. The right side of the disk is filled with a 0-15 gauge, which is in millimeters.
8, base and motor device
The machine base is a three-dimensional square box. The motor is mounted on the movable plate in the seat. When the speed is withered, rotate the round hand wheel outside the base. When adjusting, loosen the knurled nut in the center of the hand wheel and then turn the hand wheel to rotate to the left. ,Rotate slowly to the right. After adjustment, the knurled nut should be tightened. The machine base is equipped with electric appliances. The front door is equipped with an ammeter, push button switch and red and green indicator lights. When the power is turned on, the red light is on. Indicates that there is electricity on the line. When the motor is turned on, the red light is off and the green light is on to indicate that the motor is operating normally, and the ammeter is used to determine the load of the motor.
9. Powder suction device
The suction box is a rectangular parallelepiped, mounted on the left side of the base, with a blower behind it, driven by a V-belt belt, and under the powder storage room. The upper side is a filter room with 5 circular filter cloth bags inside. When the blower Suction is generated during the work, so that the fly powder generated on the die and the powder of the die under the die are sucked into the powder storage chamber through the suction tube, and the gas turns upwards through the filter bag, and the fine particles contained in the gas remain in the filter. In the powder bag, after a certain period of use, the filter bag may become congested and lose its effectiveness. At this time, it is necessary to stop, and the powder in the filter bag and the powder tray shall be opened and discharged. Attention shall be paid to the isosceles triangle of the door and the powder tube. The device, which leaks at the joint, will otherwise affect the effectiveness of the powder suction.
10. Type C continuously variable wheel device
It is mounted on the motor shaft and has two slanted live flaps inside it. It is pressed against both sides of 12 coil springs to generate positive pressure. The shifting method is to move the motor and change the distance between the two wheels. The V-belt is in the live sheet. The radius is increased or decreased accordingly in the groove, and the speed is changed due to the change of the radius, thereby achieving a range of continuously variable transmission requirements.
Rotary tablet press die mounting method:
Before the die device, first remove the hopper, powder feeder, feeder frame and other parts, wipe the work surface of the turntable, the die hole and the mounted die piece by piece, and prepare the work. Follow the following steps to install.
(1)Molding device: flatten the middle mold fixing screws on the turntable and flatten out the area of ​​the outer surface of the turntable, do not make the middle mold fit into the head of the screw, and the middle mold device is tight. Flat, can be used in the mold hit the rod (random tools) is punched into the hole, used for hammer gently into the mold into the mold. The plane of the hole must not be higher than the plane of the turntable, and then tighten the screws.
(2) Upper punching device: The tongue of the upper guide plate should be tongue-pulled, the tail of the middle rod should be coated with some vegetable oil, and then inserted into the hole one by one. Use the thumb and index finger to rotate the punch to test the head into the upper and lower molds. And the rotation is flexible, and there must be no rubbing phenomenon, and all tongues should be pulled down.
(3) Lower punching device: Pull open the small door on the main body, and put it on the round hole of the main body. The loading method and the upper punching shall be the same, and the wafer must be covered after the installation.
(4) After all the dies have been packaged, remove the removed parts according to the original position, continue to turn the test wheel by hand, rotate the turntable 1-2 turns, observe the upper and lower punches and enter the hole in the mold and act on the curve guide. Must be flexible without collision and hard rub phenomenon, start the motor, so that empty cars run 2-3 minutes, stable and normal can be put into production.
　　

Crankshaft Pulley

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Taizhou Chenhui Machinery Manufacturing Co., Ltd , https://www.chenhuipulley.com