Common faults and solutions of single punching machine (1)

The single punching machine is a kind of small table type electric continuous pressing machine, which can also be manually operated Today, I summarized some common faults in the process of use I jacking, that is, "jacking" after punching into the middle mold, and the machine stops running Because of the heavy load on the top of the car, the mechanical analysis is often damaged or the motor is burnt out Causes: ⑴ the pressure is adjusted too much; the tablet is too hard; ⑵ the feeding is repeated; ⑶ the eccentric wheel housing and the main shaft hole are lack of oil, the rotation resistance is too large, and even serious wear and tear occurs "bite" phenomenon; ⑴ the belt is too loose; ⑤ the starting position is not proper; ⑥ the hand shaking force is not enough; prevention and treatment: (1) when adjusting the pressure, it is necessary to gradually adjust the pressure, not to adjust too much at one time, nor to press the tablet too hard; (2) avoid repeated feeding; (3) keep lubrication frequently, and if it has been seriously worn or "bitten", it is necessary to dismantle and repair it immediately (4) adjust the belt through the two adjusting nuts on the electromechanical bottom plate Pay attention to locking after adjustment (5) no matter manual pressing or electric pressing, make the upper punching core rod in the rising position before starting If the upper punching plate is started in the down position, it will enter into the middle molding plate just after starting At this time, because the rotation speed of the machine has not yet risen up and the inertia is small, it is easy to have a car jacking (6) when the hand-operated tablet is started or the upper punch passes through the low point, it must be more forceful (7) in case of car jacking during electric tablet pressing, the power shall be turned off immediately to avoid burning the motor When the jacking condition is light, turn the hand wheel by hand to make the upward punch pass the "dead point" (but not reverse, so as to avoid repeated feeding of the feeder, resulting in more serious jacking) In case of serious jacking, loosen the locking nut of the connecting rod, turn the upper core punching rod to make it rise to reduce the pressure, and then turn the hand wheel to eject the tablet Then readjust the tablet hardness II Causes of poor operation: lack of oil on the friction surface of the moving parts, dirt, rust, serious wear and poor matching of the parts Prevention and treatment: check all parts regularly, keep them clean and lubricated Lubrication of friction surface of all moving parts is an important link to ensure the normal operation and prolong the service life of the machine In particular, if the main moving parts are dry transferred in case of lack of oil, they will be damaged quickly and cannot be used Therefore, before using the tablet press, all oil cups, oil holes and friction surfaces must be added with lubricating oil, and the friction surfaces shall be covered with oil film when the machine is running empty, and then they can be put into use 。 In the future, every shift should be refueled on time, but not too much should be refueled each time, so as to avoid spillage affecting cleaning and contaminating tablets In case of any bad condition, it shall be repaired immediately, so as not to worsen or damage the machine 3 It is heavy or blocked when going down and rising Causes: ⑴ because the surface of the die is not smooth or worn; or because of the improper mixing and granulation, the powder adheres to the surface of the punch and the middle die, increasing the resistance of the chip (2) the lifting cam is seriously worn or sundries are entering; (3) the lower punch core rod is worn with the middle die when it is raised due to improper adjustment Prevention and treatment: ⑴ if the punch is found to be stuck, the punch shall be replaced or the medicine shall be treated again according to the situation (2) check and repair, keep clean and lubricated (3) pay attention to the adjustment.