1. Safety pins are also called electronic knife locks, which are divided into two types: built-in (new machine) and external (old machine). The safety pin must be operated once for each knife cut (ie, the external safety pin moves backward when the knife is lowered, and the knife extends forward when the knife is raised; the built-in safety pin is raised when the knife is lowered, and the knife falls when it is raised). The specifications above 1860 also use external electronic knife locks, and the rest have been changed to internal ones. If you press the two-handed button to press the paper presser down, the safety pin fails to retreat or lift up, the mechanical reason may be due to the improper cooperation of the safety pin piston and the hole or lack of oil (external type); the knife lock that prevents the knife seat from falling The support rod is not properly matched with the joint shaft and hole (built-in type), resulting in inflexible movement. It can be solved by proper correction and lubrication until it is very flexible by hand. For electrical reasons, you can check whether the safety pin coil is energized (DC about 50V). Please check the AC and DC voltage of the bridge inside the strong power box and measure whether the safety pin coil is short-circuited or disconnected. If it is an external safety Pin, check whether the S21 (Model 831600) micro switch on the safety pin device is pressed by the nylon wheel; the built-in safety pin, check whether the knife lock support bar has been reset normally, and the two upper and lower proximity switches (S type) Or whether the micro switch (N type) is functioning and is in the open and closed state respectively, and also check whether the safety pin electromagnet itself is flexible. If the safety pin electromagnet is energized, but it still cannot be attracted, then most The safety pin solenoid is broken and needs to be replaced.
In the SQZK series models, the safety pin has been changed to a built-in type and is no longer exposed. However, it must be noted that in models with N, the safety pin switch uses 831600-W3-153E micro switch, in models without N, the safety pin switch uses the contactless E2E-X4MD1 Proximity switch. The electromagnet coil of the built-in safety pin is installed upright. Before the knife is lowered, the safety pin coil is energized first. The knife holder support rod is pulled up, and the knife holder can be smoothly lowered. Once a knife appears after a cutting cycle, due to this time The safety pin coil has been de-energized and the knife holder support rod has fallen. The knife holder support rod will withstand the upper right step of the knife bed to prevent the knife bed from descending, which plays a safety role. Therefore, if you press the two-handed button, the paper presser descends, but the knife holder cannot come down. First, you should remove the long cover on the right side of the rack, check whether the knife safety pin is sucked and the movement is normal, and whether the upper and lower proximity switches start effect. In the case of ensuring safety, you can manually press the tail of the knife lock support bar while pressing the two-handed button to manually move it. If the knife can be lowered normally, it must be the electronic knife lock coil. It's broken.
The safety pin coil of the previous SQZK model used a double coil structure. A micro switch was installed in the upper cover of the coil. The wiring method of this switch is normally closed. Because the safety pins of the early SQZK series models are single coils, when the user changes the tool, the safety pin coils are energized and attracted for a long time, and it is easy to generate heat and cause the safety pin action to be inflexible. . The so-called double coil is composed of two coils with different resistances connected in series. When the safety pin starts to pull in, because the micro switch is in the short-circuit state, only the small impedance coil is working. At this time, the current through the coil The larger the suction force is, the more the micro switch is held open when the pull-in is in place. At this time, the two coils in series work at the same time, the impedance increases and the current becomes smaller, so even the pull-in for a longer time Do not cause excessive fever.
However, the dual coil structure also has its obvious shortcomings, that is, the micro switch on the coil is easily damaged by long-term impact, and once it is damaged, it cannot be cut, so we eventually abandoned the dual coil structure and the electromagnetic of the safety pin. Iron has made a thorough improvement and has basically solved this problem.
2. Failure of the photoelectric protection device: The early photoelectric protection device was designed by ourselves. If the paper press and the knife are not lowered after pressing the two-handed button, first check whether the row of red lights below the receiving part on the left side of the photoelectric protection device can all go out. If one or more of them are not extinguished, you can press the left and right two-hand button switches in sequence when the motor is on (because of the KT2 time relay, the knife and the paper press will not fall at this time). You can observe a red light that the photoelectric protection device has not been able to extinguish, and the reason for not extinguishing may be that the dust-proof glass surface of this road is too dirty or the emission tube and the reception tube are not aligned, which affects the infrared signal emission. And receiving, you can clean the dustproof glass and adjust the position of the small transmitting board or receiving small board until the red light goes out. In addition, it may be caused by the damage of the transmitting tube and the receiving tube, which requires a multimeter to measure. The resistance of the emitting diode should be forward conduction and reverse termination. If the forward and reverse measurements have been turned on or off (or the resistance is similar), then the tube can be determined to be broken. The performance of the receiver tube is: when measured in the reverse direction, the resistance value of the tube is significantly different between the light and backlight conditions of the tube, and the resistance value against bright light should be as small as possible. The voltage during normal operation of the launch tube should be about DC1.2V. In addition, it can also be judged by exchanging the receiving tube connection plug on the circuit board of the receiving device. If the bad one is changed to the good one socket next to it, the red light of the way can be turned off, then it can basically be determined as the one on the circuit board. If this part of the circuit is damaged, the circuit board needs to be repaired; if it still cannot be extinguished after replacement, it is likely that there is a problem with the pair of transmitting tube or receiving tube.
To put it simply (of course not absolute), if the red light does not go out, most of them are the misalignment of the transmitting tube and the receiving tube, the transmitting tube (more vulnerable), the receiving tube is damaged or the corresponding one on the circuit board The 0.2m¦ capacitance is damaged. If the two connected red lights do not turn off, most of the two red LEDs on the circuit board are bad or one of the 4528 chips is broken. If the red lights are not turned off, it is likely that the 4093 and 324 chips on the circuit board are broken. [next]
In addition, if the 4078 chip on the circuit board is damaged, it will cause the red light to not be turned into green light; if the 1413 chip is damaged, the relay on the circuit board will not work.
Now the model used is a new type photoelectric with digital tube display, which has an error code indication function.
SPGE20 launch unit (right)
Green indicator: normal transmission indicator
Yellow indicator: power on indication
SPGE20 receiving unit (left)
Green indicator: output non-alarm status indication
Red indicator light: output alarm status indication
Yellow indicator: power on indication
The role of receiving digital tube:
1). When self-calibration error occurs, an error message is displayed.
2). Normal operation. When the beam is blocked, the blocking position is displayed. For example, when blocking the second path, 2 is displayed, and so on.
3). Normal operation, when the beam is not blocked, the signal receiving strength is displayed. Generally, it can work normally when it is displayed above 3, if it is displayed below 3 or 3, it means that the voltage is too low.
The voltage of photoelectric protection cannot be lower than 13.5V (AC).
Error message:
1). E1.1-Relay 1 pull-in error (at this time, the grating is in the unblocked state, the output is not locked, once the beam is blocked, the grating is turned to the blocked state, and relay 1 is released).
2). E1.2 --- Relay 1 release error (at this time, the grating is in the beam blocking state, and the output is locked, that is, the grating is always in the alarm state regardless of whether the beam is blocked again).
3). E2.1 --- Relay 2 pull-in error (at this time, the grating is in the beam blocking state, the output is locked, that is, whether the beam is blocked again, the grating is always in the alarm state).
4). E2.2 --- Relay 2 release error (at this time, the grating is in the unblocked state of the beam, the output is not locked, once the beam is blocked, the grating changes to the blocked state, the relay 2 pulls in).
5). E3.1 --- Power supply abnormal error (the internal 12V power supply is too low, it may be the input voltage is too low or the 12V power supply is damaged or other circuit failure).
6). E3.2 --- Abnormal power supply error (the internal 12V power supply is too high, it may be 12V power supply damage or other short circuit faults).
7). E4.XY --- E7.X internal circuit self-calibration error (specifically including line, photoelectric, signal acquisition system, etc.). [next]
3. The drawbar of the tool holder is divided into upper and lower parts. The upper part is mainly composed of the left threaded drawbar (piece 1), the right threaded drawbar (piece 6) and the adjusting nut (piece 3), and the lower drawbar seat (piece 8) Connect to each other by safety screws (key 7). The safety screw is required to be tightened at least once per shift to prevent it from coming out or breaking due to loosening. The previous model has a safety ring on the adjusting nut. When the blade is adjusted upward, the pin of the safety ring will be stuck in the hole of the left threaded rod to ensure that the left and right threaded rods will not Take off. But often users do not pay attention when adjusting. Although the pin of the safety ring has been stuck in the left threaded hole and cannot be pulled, it still needs to be hardened, which results in serious damage to the left threaded rod and the adjusting nut. The current new models have all been changed to install a round pin at the bottom of the left threaded rod. There is a step inside the adjusting nut. When it is adjusted up to a certain position, the round pin will be stuck on the step and cannot continue. Pull, so the user must pay attention to the operation. Once the blade feels heavier in the height adjustment of the blade, it should be checked in time instead of trying hard or even using an extended wrench.
4. The tool change mechanism of the tool holder is composed of several sets of gears. The looseness of the up and down movement can be adjusted by the degree of the M6 ​​hex socket screw on the front of the tool holder pressing the butterfly spring. If the blade is blocked up and down when changing the tool, you must find out the reason. Never pull the handle hard to avoid excessive force, which may cause the gear or hexagonal pin to slip and damage the parts. Among them, a group of gears are fixed by pins and gears by riding seam screws, which are easy to slip due to excessive force. During inspection, you can loosen a piece of metal shield in the middle of the back of the knife holder to check.
5. When placing the rack, you must pay attention to the flatness of the ground, and there must be appropriate space left, right, left, and right to facilitate operation and future maintenance. The level can be placed on the joint surface of the rack and the workbench, and the horizontal state can be adjusted under the left and right bases of the rack with a small oblique iron to meet the requirements. The fixing method of the frame can be preset anchor screws, pressure plates plus expansion screws, or cement around the left and right bases.
6. After the machine has been used for a long time, the impact sound is obviously increased during cutting. The common reasons are as follows: first, the needle bearing in the left-hand threaded rod is damaged; second, the two sliders of the tool holder are seriously worn , The clearance between the chute of the tool holder increases; third, the wear between the worm gear and the worm (mainly the wear of the worm gear). These conditions can only be solved by replacing parts.
When judging the above faults, you can remove the blade and turn the blade holder down to about half, then use a thicker wooden stick to pry the blade holder up and down at the left and right positions under the knife holder, you can obviously feel a certain There is a loose phenomenon at this location, carefully find out where this gap occurs, and it can be solved by replacing the corresponding parts at that location.
The user is reminded that in the SQZK920 model, because the cutting height of the machine is increased by 10mm compared to the original old model, the user should be clear when buying the blade. The blade length of the S-type machine is increased by 20mm. In the future, there will be a phenomenon of continuous paper cut on one side.
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