How To Repair The Mechanical Failure Of The Automatic Mahjong Machine

The mahjong machine is out of order, don’t know how to adjust it? First of all, we need to have a certain understanding of the structure and principle of the mahjong machine in order to take corresponding countermeasures against the failure of the mahjong machine. The following is an introduction to the mechanical part of the automatic mahjong machine and the maintenance methods.

▶The machine's card making speed is slower than 80 seconds

The cause of the failure: the position of the magnetic ring is not in place, the rubber strip of the turntable falls off, the adjustment of the triangle block distance, the adjustment of the card feeder, the adjustment of the flip strip, the height adjustment of the magnetic isolation plate and the turntable, the speed of the machine head is abnormal, and the conveying groove There is debris, the shuffle spring is not easy to use, and the speed of the turntable is ahead of the magnetic coil.

▶The chain rod is stuck behind the push board

The cause of the failure: the flexibility of the Sifang card stick back and forth, whether the top of the Sifang card pressing board has fallen off, whether the tension spring has fallen off or is broken, the microswitch is not flexible.

▶Nose card

The reasons for the failure are: adjustment of the stroke position of the machine head and the conveying trough (generally, the distance between the top plate of the machine head and the conveying trough is 1 mm on the diagonal of the mahjong card, which is the maximum), the poor performance of the trough-shaped optocoupler, and the K1 machine head sensor The light-sensitive distance is too long (the sensing distance of 4# light sensor is 10mm), the motor gear is damaged, and the machine head stacker is not level with the road plate. Adjust the position of the stop plate and the push plate of the machine head. The push slide of the first class is not flexible enough to retreat, and the stainless steel plate is too low.

▶The riser table is not level with the tabletop

The reasons for the failure are: the rubber pad is not placed correctly or the upright rocker arm is not vertical, the screws are loose, or the blocking iron plate is too high or too low, the panel bracket screws are loose, and the panel is deformed.

▶The last few cards cannot be shuffled

The cause of the failure: the spring is off or the card is not good, there is no magnet, or the position of the magnetic coil motor is adjusted, the magnet of the flop is not good or the position is not good, whether the magnetic coil and the large plate are synchronized, and the rubber strip is off.

▶The cards shuffled on the table are not neat and scattered

The cause of the failure: the distance of the card transport track is too large, and the overall screw of the road board is loose. The card pushing slider is not very flexible, and the card tabletop phenomenon occurs when the card is being upgraded.

▶Conveyor wheel dice ringing

The cause of the failure: the pillar of the conveyor wheel dice is rusted, just remove the wheel to remove the embroidery powder and refuel and install it.

▶Conveyor belt slips and runs sideways

The cause of the fault: the tension rod of the conveyor belt is not strong enough. At this time, you can withdraw the tension spring screw to the next screw hole or replace the spring to eliminate it; the driving wheel of the conveyor motor is deformed.

▶Sometimes there are flops on the conveyor

The cause of the failure: This phenomenon is mainly due to the adjustment of the high and low positions of the magnetic ring and the conveying groove. The upper and lower positions of the magnetic ring and the conveying groove are best to be 1mm. At this time, only the small magnetic ring carrier wheel spacers need to be reduced or the conveying groove can be raised. . (Note: When raising the conveying trough, pay attention to the distance between the front of the conveying trough and the machine head).

▶The middle control tray is not level with the desktop

The cause of the failure: the height adjustment screw of the lifting plate in the electric control box is loose. If the screw is not loose, it is caused by the deformation of the panel.

▶The card does not push or a single push card appears on the cardholder on the nose

The cause of the failure: This is mainly the high and low position adjustment of the K1 head sensor and the adjustment of the sensing distance. The main reasons are: the K1 head sensor is too dirty or broken or the K1 is far away. The appearance of the single card may be caused by the low position of the K1 sensor; or the small square light sheet is oily, and the square light sheet of the slot line sensor is too close. (Note: K1's high and low position adjustment is mainly based on the three-quarter white of the first card as the standard, and the distance between the square light sheet and the grooved photocoupler is (0.5mm-1mm).

▶The machine head keeps running

The cause of the failure: Check whether the slot-shaped optocoupler is blocked by something, the oily substance is the most frequent, and whether the connector is plugged in firmly; the motherboard control error.

▶Chain can't move

Causes of the failure: 1. The chain motor itself is insufficient; 2. The pressure plate is too tight; 3. The tensioner is too tight; 4. The gap between the turns and the card track is not adjusted properly; 5. The mahjong tiles are too tight Dirty; 6. The small chain is pulled too tightly; 7. There is debris in the chain track; 8. The chain rod is bent and hung to the corner of the corner; the screws of the blocking plate at the end of the No. 9 and 4 road plates are loose, and the blocking plate is skewed. The chain rod is stuck; 10. The chain gear plate is not flexible.

▶There are 16 tricks and 18 tricks when making cards (old-fashioned trick counting)

Cause of failure: 16 piers may be loose or dirty on the chain-link of the corresponding road plate, 18 piers may be due to insensitivity of the pier position sensor or poor performance or the slot-shaped optocoupler is close to the nose, square The light film has oil stains.

▶Chain rod broken

Troubleshooting method: first find the live link of the chain, let it stop at the position of the machine head, then loosen the tension spring, disassemble the live link, and loosen the small chain (because loosening the small chain facilitates disassembly and assembly, and only when loosening the small chain Just loosen the screws that fix the chain motor frame). At this time, the chain can be easily pulled out from the machine head. When installing, find the correct direction of the chain to install.

▶The first litter table rises, the other three are stuck

Failure reason: 1. Whether the microswitch is in good condition; 2. It is possible that the card raising table cannot be lowered to the bottom of the table cloth is upturned, the cards are stuck when pushed, and there may be mahjong or other sundries underneath; 3. The card raising table Secure the ears stuck in the corners. Failure to act when the outside world is normal is a problem with program control.

▶The promotion table cannot be raised or does not move at the same time

The cause of the failure: the stopping position is wrong, mainly because the K4 position is wrong or the chain cover is dirty and occasionally the detection is not sensitive.

▶The promotion table is not synchronized when the cards are promoted

The cause of the failure: the position of the microswitch wheel is not adjusted properly; the relationship between the plate riser pedestal and the guide rod is not adjusted properly, or the pinion has a loose screw, etc.

▶The riser is shaking or one end is in place first and the other end is in place

Causes of the failure: 1. The gear is not adjusted properly and the rotating arm is not synchronized; 2. The card raising table has not been adjusted properly when the ears of the card raising table touch the panel; 3. The guide rod is loose, etc.

▶Make a sound when the card is upgraded

Causes of the failure: 1. The gap between the card push lever and the front baffle plate is small, and the impact sound is made; 2. The card push lever is tilted; 3. The gear movement gap is too large, and the impact sound between the rotating arm and the card riser stand; 4. Cam There is rust on the column; 5. The sound of friction between the brand and the guide plate.

▶The card is stuck on the panel when the card is upgraded

Reasons for failure: 1. The card is not pushed into place; 2. The relationship between the front baffle and the panel is not adjusted well or the guide plate is moved as a whole.

▶There is abnormal noise when the rising table is lowered

The cause of the failure: The main cause is the sound of the hook hitting the rotating arm.

▶Licensing table aside

The cause of the failure: the whole frame is loosened or the frame screws are tightened too tightly during installation, which deforms the whole frame