Self-adhesive printing related knowledge, self-adhesive printing related knowledge
Release time:2014-07-17 Browse:0
Self-adhesive printing related knowledge introduces a command, feed equipment:
Feeding device, correctly grasping the paper can be smoothly transferred to the previous rules, reducing the paper's failover process, which ensures the quality and production efficiency of the printed matter is of great significance. If the functional feed of each component is used properly, it will not cause ills such as feeding difficulties, on the other hand it may lead to various feed errors, resulting in loss of print quality, and production. The reason for the skew of the paper is difficult to locate the instrument and the side gauge, which often leads to downtime, and also increases the labor intensity of the operator, the decrease in output and the imbalance of ink quality. Therefore, the performance of a good printing press must be stable. The characteristics of the paper are accurate. Of course, you must be familiar with and properly adjust the function of each component with good paper.
The water supply system of my PZX650 series four-open offset press can accurately locate the mechanism papers and submit papers. The feed speed can be up to 12000 sheets/hour, and there is no parking paper added function.
The paper feeding and water supply piping system uses chain drive and speed synchronization masters, so we should pay attention to adjusting the chain tension. Because the tension between the two chains is simultaneous, don't ignore this adjustment.
(1) Loss of specific institutional functions
Paper feeding is the core component of the feed equipment. Its function is to stack the paper and then send it to the paperboard. This is a complex mechanism, the function of the main components
1), cardan shaft coupling
Feed the drive transmission part and drive to work. According to different specifications, the torque can be transmitted flexibly. In order to ensure the stage of operation of the paper feeding and the host, attention should be paid to the direction of assembly or maintenance and coupling. The correct location is as follows:
The tip and feed rolls are time-coupled and coupled to the flange.
2), positioning locking device
After the paper feed is adjusted to the correct position, the knowledge of the sticker printing is that the entire unit should be able to lock firmly and ensure that the paper nozzles and parallel parts.
3), height adjustment mechanism
By adjusting the star wheel.
4), rotation mismatch air valve and air volume control switch
Controls the flow provided by the pump on and off (the air supply action is turned on or off in time) and adjusts the inspection with the mechanical action. Usually, the maximum distance of the paper nozzle can be checked, the vacuum air flow (paper) can be cut off, and the switch can adjust the air volume.
5), the pressure bar
Gently press the two corners of the paper stack to prevent the paper teeth from over-heading.
6), a paper
The height of the fluff can be adjusted up and down, the trailing edge is blown, the paper is made, and the paper nozzle and the separate paper are promoted to work. This is the wind blown foot press paper. According to the structure of the paper, the air can be adjusted to blow the appropriate loose 3 - 10 paper.
7), paper nozzle (increase)
The action of the mechanism is to move the cam down to the lowest position, the nozzle quickly lifts a piece of paper on the surface of a pile of paper, when the paper nozzle moves to the position closest to it at the paper nozzle while another promotional loose-leaf paper The transfer of the nozzle is completed. As the distance can be adjusted, but the suction pile can also be adjusted, the absorbent paper is inclined, according to different situations, the direction and angle of the slope can be adjusted, when using suction should not be too large, the position should not be too low, otherwise It is easy to have a double absorption feed failure.
8), paper (or paper brush) steel
In the paper nozzle of a piece of paper, the steel plate is pressed against the remaining paper, and only the top of the pile is piled up. A piece of paper and paper is not an obstacle.
9), the pressure of the press
Insert the paper and paper pile just below, stack it on the paper, and explode under the additional paper to form an air cushion. The easy paper feeding nozzle will smoothly pass between the paper feed roller and the roller. The agency’s actions have two distinct phases (paper)
Insert one,
B, news summary
It must be proofread repeatedly when positioning. Usually, under pressure, the foot of the connecting rod starts to form a pressure foot shovel paper at a minimum position angle of 8°. In the absence of presser foot action, it causes confusion to the advancement paper.
In order to ensure the separation of the paper tips of the normal working paper, the distance between the paper and the paper suction head and the pile must not be changed too much. The wind blower mechanism also has automatic functional paper, which is piled on the paper and automatically Rise, quantitatively correct the bottom of the presser foot, top micro switch, hear a click sound, flexible according to the thickness of the paper, generally 10 - 15 parts per delivery rose (80 - 1008 / m2 tissue).
10), paper nozzle
The elevator papers the nozzle paper in time, the absorption and the paper feed roller, when transferring the paper, the paper front bezel teeth should be synchronized (moving), when the paper is in the paper feed roller, the block paper teeth quickly approach the bottom of the range.
Ask when the paper nozzle feeds forward, the gap between the paper feed roller and the feed roller is 2 m / m (manual) (the first step in the paper for the paper roller pressure to be cheated, the paper nozzle is slightly loose.) (The Miller machine is faster in the nozzle to apply paper to high speed and precise machines).
The paper feed nozzle is a pneumatic flow element, when the nozzle and paper, suck him back. After you can quickly increase the absorbent paper, you should pay attention to the distance between the tip and the pile, not too small, usually about 5 to 8 m / m, should be able to hear the ringtone when using the "click" sound, if inhaled, inhaled, should Consider whether the vacuum is insufficient or the suction gas passage blocks the hair. A paper with a nozzle whose spiral angle can be changed to achieve a change in the process of sending the paper before the tilt, so that the paper reaches the entire transfer process in parallel, because the unilateral adjustment, slow, fast or borrowed to achieve a certain adjustment range During debugging, it should be noted that the adjustment mechanism adjusts the portion located in the middle. Paper unilateral speed regulation can be adjusted during the feed process.
Lost the paper part according to the actual size of the paper size and position before and after the movement up and down, before and after, ensure that the blow pressure is pressed after a pile of paper 8 to 10 m / m engraved line mark, automatically rise to the upper and lower pile less than 5 m / m piece of paper The tooth is finished.
The link between the lost complete set of movements and the feed roller feed roller is only in contact with the paper roll, the paper suction nozzle should be the first step to put the paper (or before seeing the instructions, the paper, the paper nozzle feed roller and the feed roller 2 (millimeter distance) self-adhesive printing related knowledge introduction 11), paper pile front blowing
The loose front of the pile is blown in front of the pile, and the front can be smoothly fed between the paper and the paper roll and the feed roll.
(2) Stack paper tray
The stacker consists of two sets of lifting mechanisms. The same principle is driven by two motors. The rise and fall of each control switch pays for a large pile of cardboard in order to realize the function of the uninterrupted paper.
The stacker is full of paper printing materials. The PZX650 four-open offset press Feida's main payment plate exchange is mentioned above, which realizes the function of the uninterrupted cup paper. The specific method of use is not introduced here. I only remind the installation and commissioning staff that in addition to being able to improve smoothly, the agency should also pay attention to adjusting his level so that the paper has a pile of paper countertops, parallel problems, before and after installation and commissioning, in addition to appease piles on the table. We sometimes ignore this. Although if you don't have a horizontal stacker, the operator can use wedge or place fill to solve it, but it actually increases the workload of the staff, sometimes causing the paper to fail is not smooth, I suggest we pay attention to this problem. I found a difference between the user service of about 15 mm difference, before and after 8 mm, which led to a bad failure of the unilateral paper.
There is another control related to the stacker. The installation and commissioning of the automatic travel switch of the paper machine, the adjustment and tightening of the two travel switches should be taken seriously to make it work reliably, otherwise it will cause major mechanical equipment" target=_blank> Mechanical equipment accidents, and paper. The problem caused by the trip switch installed too wide, and switching is not in the roller chain roller, because not in the middle, sometimes the top displacement and switching failure after the roller chain.
Before the piles are piled up, there is a sample on both sides. Its function is based on a pile of paper (anchor). Do not clamp too much when using it. Paper has a limit switch, his role is the paper stack switch, that is, in front of the article block is a counter front limit switch. The top of the pile of paper machines, the paper pile is super high, and the safety switch. When the pile presses the foot one step, it prevents the paper from rising and damages the parts.
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