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Modify the printer technology reveals

文章出处: 人气:: 发表时间:2016-04-19 16:47:19
Epson printer consumables manufacturers on the network has adapted the principles of technology and technical guidance it, but these are only part of the surface, the core of the motherboard, chip, crack and flat restructuring drive. Principle we all know, but adapted a good equipment, not only requires skill and experience, but also need to constantly improve and debug.
1, modification principle
The motor drive signal pickup leads, then add a power amplifier to drive greater stepper motor. Then the motor is moving to another position to do platform, to mobile work platform or the printer body by screw, belt, steel wire, in fact, is to be converted into a paper feed motor Y-axis motor (control of the machine, Carriage e move back and forth) only.
Modification of the machine itself after the pickup mechanism basically useless, and without affecting the structural strength of the printer, the shaft can be removed or amputated stick to vacate the lower space to the working platform. Because the printer started work, through a photoelectric sensor to check there is no paper, when a simple modification flatbed printer, you need to move the sensor to the end of the working platform, the platform is not used to detect nearly printer, and the printer detects similar status of paper can be printed, and this time, the printer will not work. This sensor can be used to replace the proximity switch, so you can more easily handle the installation position of the sensor. More complicated is modified to deal with some things through the microcontroller, for example, can send virtual sensor signals have a paper to the printer, to fool the printer for direct printing, and the host computer to control the printer is "offline" or "online" (similar to panel operation EPSON LQ1600K old-fashioned printer), you can also work independently control the Y-axis motor, the mobile platform or separate printer, so that some debugging state needs to use this feature.
2, modify the accuracy
On the existing modification methods and modification conditions, we can only talk about the accuracy of the static lattice precision nozzle, after modification to ensure that only the original ink car drag on the machine part on the accuracy of the machine, we can see it as X-axis section (control of the machine, the ink vehicle moving around), because the printer is usually made of plastic grating with position feedback, the precision is very high, but some older machines are open-loop stepper motor to drive the ink vehicle, this precision stepper motor can only rely on themselves to ensure, however, because each step angle precision stepper motor is relatively high, and the error does not accumulate, so driving accuracy although ratio feedback handicap, but also quite good. Y-axis moving part of the horizontal accuracy is guaranteed, since the stepping motor is used.
The accuracy of the vertical position of the platform is not guaranteed, we can put this Regarded as the Z-axis position (relative to the machine, Carriage is moved up and down), in general, we are all manually adjust the platform away from the location of the printer, and basically on visual observation, the error is very big up. Therefore, we modified flatbed printer, the accuracy of this figure can not be confused. To ensure that the printer itself we did not move the X-axis ink drag car parts, as well as the Y-axis horizontal moving parts, Z axis can not be used to talk about precision. The concept of precision but also from a plurality of view, Y-axis if the modified long, then the accuracy will be relatively low, a friend said to ensure accuracy in 0.02mm, then the error is ± 0.01mm, the accuracy is very high, this is a high-precision machine tool industry will be able to reach the level! If the rack is highly rigid machine frame, and by the aging process, and by the high level of testing, installation in constant temperature and humidity in the workplace and perhaps it can be done
of. But, we are now in a modified way, this figure is inflated, it is not practical, commercial hype of the suspects, say this accuracy can only show you the mechanical aspects
Knowledge is not well understood. Of course, this does not affect everyone adapted to the printer.
3, conversion methods
We have now modified the printer fixed, mobile printers and mobile work platform, fixed table in two ways, we are now to compare the characteristics of these two methods. With the first mode, the printer is fixed on the Y-axis direction before and after the move, in order to ensure that the length of the printable platform, the platform will be the platform than the second method used to grow a lot, how much concrete to grow, to See fixed platform with two sliders distance between the rails, in general, about half the length of the president, if sufficient rigidity rails and platforms, the size can be reduced appropriately. So, the first way out of the machine modified area larger than the second method, mainly reflected in the Y-axis stage stretching space. This motion platform mobile applications on industrial machines use a lot, mainly because this is the way to ensure a high body strength and precision, and in this way to move the printer less precision, space required for ordinary on civilian products more often. On the small size of the machine (A4), the use of mobile internet is much easier to modify the way, you can use the lightweight platform, using the print
Machine pickup motor direct drive mobile platform, such changes workload is much smaller, grow double the space occupied by the platform is substantially negligible.
If the room is not very big space, I tend to use the printer from moving way, it saves space use. In the case, the relative accuracy of the industrial machine of this modified flatbed printer, the accuracy is very low! Two ways no effect on the print accuracy, you can choose according to their own actual situation.
4, driving modified details
Y-axis driving part is a quote from the pickup motor signal, regardless of mobile platform or mobile printer, the linear speed of movement is to be completely guaranteed, so as to ensure the printed graphic length does not change. This requires an estimation of the original paper feed mechanism gear ratio, and then reflected in the Y-axis above the modified through a variety of deceleration mode. Changing the gear ratio of roughly way: shift gears, timing belt gear, worm gear, rack and pinion gear, etc., it belongs to a ball screw shift gear change, which is the most common way, but the cost is the highest, and it's the gear ratio is fixed, if you do not meet the requirements, plus also need to adjust the timing belt or gear ratio.
Modified transmission mode Y-axis moment usually are: screw drive, wire drive, belt drive, rack and pinion in several ways, under normal circumstances, screw drive inside the ball screw drive the cost of the most expensive, precision is the highest, because the machine is adapted for precision is not very high, is not sure to choose this ball screw, we can according to their own economic situation to choose. These are the shift from a mechanical point of view the problem, there can shift from the electrical point of view, this is the use of feedback stepping motor or servo motor is more advanced, the two motors with feedback, through the microcontroller or plc is to adjust the motor speed, can achieve the effect of the shift, of course, which is modified human knowledge requirements are relatively high.
5, the sliding system modification details
Here is a modified Y-axis parts, mobile internet and mobile printers will need a pair of rails to support the platform or the printer, under pressure or tension in the vertical direction (screw, belt, wire transfer torque transmission only in the horizontal direction, and the force in the vertical direction is different). There are many guides can: angle after square rails, round rails, also has its own optionally been processed, T-shaped iron and so on. Slide the slider on the rail can be selected: Ball slider sleeve (printer ink car is to use multi-sleeve), ordinary ball bearing, V-groove pulleys, etc. specifically how to choose, to be able to get completely according to their own hand What materials and consider their own economic strength. Square and matching ball slide rail is the most expensive, but according to modify the printer this situation, can choose the cheapest angle + V-groove pulley way to do it, so the cost is very low, in the case of debugging well, substantially modified to meet the requirements of the printer.
6. Other
The modified printer, it should be very strong, should be designed to minimize assembly screws connected fixed manner, especially moving parts, preferably the overall casting or cutting out, or consider welding, so be maintained to ensure that the case, airframe structural strength and accuracy does not change after prolonged use. Design of the time also need to consider the dust protective rails on rails installed dust protection plate, rail and clean the machine directly affects the accuracy and machine life.
The machine should be in the most convenient location to install a dedicated red emergency stop switch, the switch should be able to control the total power of the machine, in this case after the accident took this switch, the whole power outage, all movement stopped, ensure the safety of machine and operator.