Introduction to rotary tablet press :
The rotary tablet press has high assembly precision, excellent material resistance, wear resistance, stability and reliability, and is recognized as a popular product in the country. The use of the industry has also been radiated from pharmaceutical factories to veterinary pharmaceutical factories, electronic component factories, ceramic factories, chemical raw material plants, and even mosquito-repellent factories, fish medicine feed factories, disinfectant factories, and catalyst factories. This machine can also be changed to a profiled die. Because the model has a relatively high pressure relative to other models and the tableting speed is moderate, it is welcomed by manufacturers who produce milk chips, calcium tablets, industrial and electronic shaped sheets.
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Main technical parameters of rotary tablet press:
Number of die on the turntable: 19
Zui large tablet pressure: 40 kN
Zui large tablet diameter: 12mm
Zui filling depth: 15 mm
Tablet thickness range: 6 mm
Upper and lower punch diameter: 22 mm
Upper and lower punch length: 115 mm
Mold diameter: 26 mm
Mold thickness: 22 mm
Worm gear ratio: 1:324
Turntable revolution: 20 - 40 rpm
Compressed tablet yield: ≤40,000 pieces / h
Machine net weight: 560kg
Size: 880 × 750 × 1600 mm
Motor power: 2.2kw
Speed: 960 rpm
Weekly rate: 50~
Voltage: 380v
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Rotary tablet press instructions:
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First, the use of instructions
1. This machine is a kind of machine that automatically rotates continuous tableting. It is the basic equipment for processing various granular raw materials into tablets in the pharmaceutical, chemical, food and other industrial sectors.
2. It is suitable for the production of various round tablets, sugar tablets, calcium tablets, etc. in large or small batches.
3. It is not suitable for semi-solid, moist powder compaction.
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Second, structural characteristics
1. The upper part of the machine is a tablet structure: its composition is mainly composed of three parts: upper punch, middle die and lower punch. The surrounding 19 punches are evenly arranged on the edge of the turntable, and the tail of the upper and lower punches. Embedded on a fixed curved guide rail, when the rotary disc rotates, the upper and lower punches are lifted and moved along with the curved rail guide to achieve the purpose of pressing.
2, the main work process is divided into: (1) filling; (2) tableting; (3) filming. The three procedures are carried out continuously, and the filling and tableting have an adjustment control mechanism, with a nameplate description, and the operation is simple.
3. This machine adopts a flow grid type feeding mechanism, which can make the material evenly fill the die hole and reduce the difference of the die weight.
4. The motor is installed in the machine base, the worm drive turntable is driven by the V-belt, and the stepless shifting pulley is arranged on the motor shaft. The speed can be adjusted arbitrarily by the movement of the motor, and the use is safe and reliable without noise.
5. The side of the machine base is equipped with a powder suction box, which has a blower, a powder storage room and a powder filter room. When the machine is running at high speed, the powder of flying powder and medium mold falls, which is excluded by the powder suction nozzle, and is not sticky. The knot is plugged and kept running smoothly and normally.
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Third, the construction description
1. Upper pressure wheel frame device
The upper cover is a whole casting, and the pressure wheel is installed in the groove, which is sleeved on the crankshaft, and the outer shaft end has a mechanical rod connecting the coil spring. When the pressure surface is pressed too much, the eccentric moment of the crankshaft acts to compress the spring. The distance between the upper and lower pressure rollers reduces the pressure, so that the safety of the protection member and the die can be safely used. The pressure is adjusted, and the rotating flower-shaped handle changes the length of the spring, so that the pressure of the spring is just enough.
2, the upper track device
The guide rail is in the shape of a disc, and the heat-treated rail piece is embedded around the shaft, and is fastened by screws. The groove of the upper punching tail runs along the convex edge of the guide rail, and has a trajectory lifting movement.
3, 19 hole turntable device
The turntable is a monolithic casting with 19 vertically aligned die holes. The hole device 19 is punched and placed on the fixed vertical shaft. The worm is driven during operation. The whole turntable holds all the dies for clockwise rotation. .
4, the drive shaft with clutch device
The drive shaft is horizontally mounted in the bearing bracket, with a worm in the middle, a test hand wheel at the front end, a conical disc clutch at the rear end, a handle control switch and a stop at the rear, and the clutch contact is transmitted by the pressure of the coil spring, if the load of the machine When the pressure of the spring is exceeded, the slip occurs so that the machine is not seriously damaged.
5, the feeder device
The drum cone bottom hopper and the moon return grid type feeder are used for feeding the pressure roller. The device of the feeder should pay attention to the plane to be calibrated to touch the surface of the turntable at the end of the collision, generally leaving a gap of 0.03-0.1 mm, and the gap can be adjusted by the pillar device. The powder quantity adjustment method has a knurling screw at the top of the hopper rack. In order to adjust the height of the hopper and control the flow rate of the powder, the height must be based on the size of the particles and the filling amount, and the accumulation of powder in the grid feeder can be observed. Do not overflow the amount to pass. After adjustment, tighten the knurled screws on the side.
6, the main body, the lower rail, the lower pressing device
The main body is a box shape, the rectangular groove is equipped with a pressing wheel, and a pair of heat-treated rail guides are mounted on the plane, and are fastened by screws. When the lower punch is in operation, its tail is embedded in the rail guide groove, with the groove The slope is used for lifting movement. The end of the rail guide has a round hole. It is covered with a circular area piece for the lower punching of the device. The lower pressing wheel is installed in the groove of the main body. It is sleeved on the crankshaft and the outer end of the crankshaft is mounted. The helical gear and the worm are connected, and the rotating worm rotates through the gear to make a slight rotation. When the eccentricity of the shaft is upward, the pressure roller rises, the pressure increases, and the thickness is thin, so as to control the thickness and hardness of the tablet. . The mark on the nameplate corresponds to the thickness of the tablet from 0-6. Since the helical gear has a self-locking action, it can be adjusted during operation, but after adjustment, the middle flower-shaped handle should be tightened.
7, filling adjustment device
The filling adjustment mechanism is arranged inside the main body, and a moon-shaped filling rail can be observed on the plane of the main body, which is raised or lowered by the action of the spiral to control the filling amount, and the scale of the dial on the disc is equal to filling from 0-45. The amount is 0.01 mm per grid. When the disc is rotated for adjustment, the filling amount to the right is increased, and the rotation is decreased to the left. The 0-15 gauge is placed on the right side of the disc as the filling amount, and the unit is mm.
8, machine base and motor device
The base is a three-dimensional square box shape, and the motor is mounted on the movable plate in the seat. When the speed is withering, the round hand wheel outside the rotating base is rotated. When adjusting, first turn the knurled nut in the center of the hand wheel and turn the hand wheel to rotate left. Rotate to the right. After adjustment, the knurled nut should be tightened. The machine is equipped with electric appliances. The front door is equipped with ammeter, push button switch and red and green indicator. When the power is turned on, the red light is on. Indicates that the line has electricity. When the motor is turned on, the red light is off and the green light is on, indicating that the motor is running normally. The ammeter is used to measure the load of the motor.
9, the suction device
The suction box is a rectangular parallelepiped, which is mounted on the left side of the machine base. There is a blower behind it. It is driven by a V-belt. The lower part is the powder storage room. The top is the filter room. There are 5 round filter bags in the air. When working, suction is generated, so that the fly powder generated on the die and the powder of the middle mold are sucked into the powder storage chamber through the powder suction pipe, and the gas is turned and passed through the filter bag, and the fine particles contained in the gas are left in the filter. In the powder bag, after using for a certain period of time, the filter bag may be blocked and lose its usefulness. At this time, it is necessary to stop, and the powder in the filter bag and the powder storage tray is opened, and the door and the powder tube are in the waist triangle. The device, where the joint leaks, will affect the efficiency of the powder.
10, C type stepless shifting wheel device
It is mounted on the motor shaft, and has two inclined bevels inside, which are supported by two coil springs on both sides to generate positive pressure. The shifting method is to move the motor so that the distance between the two wheels changes, and the V-belt is in the live piece. The radius is increased or decreased correspondingly in the slot, and the speed is changed due to the change in radius, thereby achieving a certain range of continuously variable shifting requirements.
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Fourth, die mounting method
Before the die device, first remove the hopper, powder feeder, feeder frame and other parts, and wipe the working surface of the turntable, the die hole and the installed die one by one, and prepare for it. Follow the steps below to install.
(1) Medium-mold device: the medium-molded fastening screws on the turntable are made one by one with the outer circle area of ​​the turntable. Do not let the middle mold fit into the head of the screw. The medium-mold device is very tight. Flat, you can use the middle die to hit the bar (random tool), then punch through the punch, for the hammer to gently enter, the middle die into the die. The plane of the hole shall not be higher than the plane of the turntable, and then the screw is fastened.
(2) Overshooting device: The tongue of the upper rail plate should be inserted into the tongue, and the vegetable oil should be applied to the tail of the middle rod. Insert the piece into the hole one by one, and rotate the punch with the thumb and forefinger to check that the head enters the middle mold. And the rotation is flexible, and no hard rubbing is required. After all the fittings, the tongue should be pulled down.
(3) Undershooting device: Pull the small door on the main body and install it from the round hole of the main body. The loading method is the same as the upper punching. After the loading, the wafer must be flattened.
(4) After the dies are fully assembled, the removed parts are installed in the original position, and the test wheel is rotated by hand, so that the turntable rotates 1-2 turns, and the upper and lower punches enter the middle die hole and act on the curve guide. Must be flexible, no collision and hard rubbing, start the motor, make the empty car run for 2-3 minutes, and put it into production smoothly and normally.
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Five, instructions for use
1. The quality of the die must be checked repeatedly before use, whether there are missing edges, cracks, deformation and looseness, and whether the device is intact and good.
2. Check whether the powder of the granular material is dry and the powder content in the granules is not more than 10%. If it is not qualified, do not press hard, otherwise it will affect the normal operation and service life of the machine and the loss of raw materials.
3. For the first test run, place the indicator needle controlled by the pressure regulator on the 6th, pour the powder into the bucket, turn the test wheel by hand, adjust the filling and pressure, and gradually increase the weight and hardness of the tablet. Finished product requirements, then start the motor, then open the clutch, for the official operation of production, in the production process, the quality of the tablet must be checked regularly, whether it meets the requirements, if necessary, adjust.
4. The choice of speed has a direct impact on the service life of the machine. Due to the intrinsic viscosity of the material and the size and pressure of the material, the structure of the machine can not be uniformly defined. The structure of the machine has a stepless speed change device, which is suitable for suppressing minerals at a slow speed. Plant grass, large diameter, poor viscosity, etc. and materials that are difficult to form quickly. Quickly suitable for press bonding, good slip and easy to form materials. Therefore, the user must be determined according to the actual situation.
5. The management personnel must be familiar with the technical performance of the machine, the internal structure, the use principle of the control mechanism and the work place during the operation, to prevent damage to the machine parts, so as to ensure safe production.
6, in the use should always pay attention to whether the machine sound is normal, in case of screams and strange sounds to stop the inspection to eliminate, do not use barely.
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Sixth, machine parts lubrication
1. The general parts of the machine are lubricated. The outer parts of the machine are equipped with oil cups and oil nozzles. According to the type of oil cups, the grease and oil should be injected separately. Before driving, all the oil should be refilled once. The temperature rise and operation are added.
2. The glass oil cup on the upper cover is used to lubricate the turntable and the bearing, and 2-4 drops per minute during operation.
3. The screw cap oil cup on the worm is a lubricating worm worm gear, which is added according to the actual lubrication condition during operation.
4. The two ends of the drive shaft are equipped with rolling bearings. The shaft shell is equipped with a grease nipple. It can be refueled once every two weeks and pressed with a grease gun.
5, the tail of the punch and the curved rail guide with grease lubrication, pay attention to not too much, to prevent oil from seeping into the powder and affect the quality of the tablet.
6. When refueling, be careful not to let the oil spill out of the cup, and not to flow around the machine and on the ground, because the oil can easily contaminate the material and affect the quality of the tablet.
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Seven, maintenance instructions
1. Regularly inspect the machine parts and carry out 1-2 times a month. The inspection items are whether the worm gear, worm, bearing, pressure wheel, crankshaft, upper and lower rails and other movable parts are flexible and wearable. The defects should be repaired and used in time.
2. When using or stopping work once, the remaining powder should be taken out and the residual powder in the machine name part should be brushed out. If the deactivation time is long, all the dies must be removed, and the machine should be wiped clean and the machine is smooth. Apply anti-rust oil and cover with a cloth.
3, the maintenance of the die should be placed in a covered metal box, so that the die is fully immersed in the oil, and to keep clean, do not make rust and bruises, Zui can customize the iron box to install a box in each specification, It can avoid mistakes during use and help to grasp the damage.
4, the use of the site should be cleaned frequently, especially for the manufacture of medicine and edible tablets, it is more suitable to have sand and fly dust.
Eight, installation instructions
1. This machine is packed in the whole box. After unpacking, move it to the appropriate place of use and use it after leveling. If the position is fixed, install the anchor screw.
2, electrical lines and devices, should pay attention to the voltage, the user did not propose, will be 380 volts, and should pay attention to the direction of rotation of the motor when wiring, must be consistent with the direction of the arrow on the machine, do not reverse, in order to ensure electrical safety must be attached Effective ground.
3. This machine should be placed in a dry and clean room with sufficient light.
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Nine, matters needing attention
1. Do not remove the protective cover, safety cover, etc. on the machine and equipment, and install it when using it.
2, the die needs to undergo strict flaw detection test and shape inspection, no cracks, deformation, missing edges, hardness and size are accurate, if not qualified, do not use, so as to avoid serious damage to the machine.
3, the granule powder should not exceed 100 mesh, because it will make more flying powder, lower leakage and more leakage, affecting the parts, easy to wear, sticking and raw material loss.
4. Do not use raw materials that are not dry, as it will cause the powder to stick to the punch surface.
5. If there are jumps or stagnation during operation, do not use your hands to avoid accidents.
6. Drive the motor first, and then turn the clutch after the operation is normal.
7. If the machine is found to be abnormal in vibration or abnormal noise during use, stop it immediately.
8, the use of pressure should not be too large, generally measured by the load of the motor with a 380 volt motor in the tablet when the heavy-duty current is not more than 4 amps is normal.
9. Increase in disc weight: In the process of pressure, the difference in weight can exceed the limit specified by the Pharmacopoeia. However, in the process of tableting, the difference in tablet weight is often found. The reasons and treatment methods are as follows:
(1) The length of the punch is not uniform, which may cause the difference in the weight of the tablet to increase. Therefore, each punch is inspected and used before use. If the individual piece is light, it may fail due to the undershooting motion, resulting in the filling of the particles. Others are less, and individual undershoots should be checked to remove obstacles.
(2) Blocking with hopper or granulator: When squeezing, if the granules used are small, sticky or wet, and occasionally cotton yarn ends in the granules, foreign matter such as tablets is mixed, the flow is not smooth, and the particles added to the die holes are added. Reduce, affect the weight of the piece, if the weight of the piece suddenly decreases, stop the car to check.
(3) Particles cause changes in the weight of the tablets: the particles are too wet, the fine powder is too much, the difference between the thickness of the particles is too large, and the lubricant in the particles is insufficient, which can also cause the variation of the difference in the weight of the tablets, and the quality of the particles should be improved.
(4) The reason for the change of the weight of the piece is caused by the failure of the tableting machine or the negligence of the work. Therefore, during the tableting process, the maintenance work should be done, and the damage of the machine parts should be checked in detail. The film is weighed once every 10 minutes (10-20 minutes), and the weight of the film is in accordance with the regulations.
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Ten, rolling bearing catalog
Bearing name | Model | Quantity | Installation location |
Single row radial ball bearing | 108 | 2 | Worm shaft |
Single row radial ball bearing | 202 | 2 | Blower shaft |
Single row tapered roller bearing | 2007108 | 2 | Worm shaft |
Single row thrust ball bearing | 8110 | 1 | Turntable shaft |
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