Bag making machine common problems and solutions
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Bag making machine common problems and solutions
1. Question: Does the bag wrinkle when passing through the middle rubber roller?
Answer: 1. The cooling effect of the back seal is not good;
2. The pressure of the middle rubber roller is uneven;
3. The air pressure is too high;
4. There is too much dust on the middle rubber roller;
5. The back seal temperature is too high;
6. The air pressure of the feeding floating roller is too high;
7. The diaphragm plate is installed tilted;
2. Question: Does the film go in one direction at the front cutter rubber roller?
Answer: 1. The pressure of the rubber roller is uneven, and the advancing film moves in the direction of greater pressure;
2. The photoelectric frame is tilted and must be kept level with the front rubber roller; (the photoelectric frame lifts the film forward and moves outward, and the photoelectric frame lifts the film backward and moves inward)
3. The punching knife is not installed properly and can easily become tilted;
4. The thickness of the film on both sides is uneven;
5. The pressure of the horizontal sealing knife is uneven, and it goes from one side to the other;
6. The diaphragm plate is inclined;
7. The middle rubber roller is not parallel;
3. Question: Is there no membrane on the small membrane plate?
Answer: 1. The white roller installation cannot exceed the template, and is preferably 8mm narrower;
2. The pressure on the hammer is small;
3. The small hammer of the superior membrane has outward and inward tilt pressure;
4. The diaphragm plate is inclined;
5. The pressure on the rubber roller should not be too high;
6. The unwinding tension is too high and it is difficult to film;
7. The tension of the film roll is not good;
4. Question: How long is the bag delivered?
Answer: 1. There is a lot of dust on the photoelectric head;
2. Insufficient photoelectric sensitivity;
3. The tracking power is not obvious;
4. The sealing knife pressure is too high;
5. There is dirt on the glue stick;
6. The air pressure of the feeding floating roller is too high;
7. The unwinding tension is too large;
8. The longitudinal sealing knife is rolled too tightly;
9. The temperature of the horizontal sealing knife is too high and the bag wrinkles;
10. The air pressure at the front and middle rubber rollers is small;
11. Feeding and pressing down are not synchronized;
12. The distance between the photoelectric and the cutter is too long;
13. The difference between waiting time and heat sealing time is too large;
14. The speed is too high;
5. Question: Is the front cutter inclined?
Answer: 1. The membrane is tilted;
2. The guide comb is missing or not straight;
3. The knife is tilted;
4. Hit the knife to the top;
5. Bags with portable holes should be taken out tail first;
6. The diagonals of the bags are not the same length;
6. Question: Is the cutting knife stuffed with material?
Answer: 1. The guide comb is far away from the cutter;
2. The cutter is adjusted too low;
3. The bag is wrinkled or uneven;
4. Fast feeding;
5. The guide comb is not straight or missing;
6. The lower cutter is installed upward;
7. For bags with hand holes, the hand holes should not come out head first, but should come out tail first;
7. Question: Are there bubbles on the back seal?
Answer: 1. The bottom plate is dirty;
2. Uneven pressure on the sealing knife or uneven pressure on the four corners;
3. The bottom plate is off-center;
4. The silicone rubber base plate cannot be too wide;
5. The sealing knife is not installed properly;
6. The sealing knife has low pressure and high temperature;
7. Gui rubber is uneven or aged;
8. If there are air bubbles during the operation, place an ironing cloth or sealing knife on the bottom plate to reduce the slant or overlap;
8. Question: Is the back seal wrinkled at the heat seal?
Answer: 1. The tension is not good, and the membrane is loose and tight at the same time;
2. The pressure of the cooling knife and the heat sealing knife is unbalanced;
3. The pressure of the heat sealing knife is unbalanced;
4. There are wrinkles on the ironing cloth;
5. The rubber roller tilts the template;
Nine: Question: Is there a fake seal?
Answer: 1. When passing the joint, the joint screen is not aligned, one side is loose and the other is tight;
2. When passing through the joint, the double-layer film at the joint is thicker, and the spatula is driven and moved by the film;
3. Flang or curl the small template at the back with a spatula;
4. Rear photoelectric running;
5. The tension is not good, one side is loose and the other is tight;
6. The edge pressing shovel cannot be too far away from the sealing knife;
7. The compound cannot reach the edge, and the single layer edge is curled;
10. Question: Does the transparent side of the back seal leak?
Answer: 1. Cutting and off-cutting;
2. The outside is too big;
3. The back tension is too high and the membrane cannot be applied;
4. The rear template is wide or the template is not coated with film, causing the front template to not be coated with film;
5. The back sealing knife is pressed outward;
11. Question: Bags often have inner and outer edges?
Answer: 1. The rear photoelectric tracking is not sensitive;
2. The raw material tension is not good;
3. Uneven discharge of materials;
4. The upper film is uneven;
5. The rear white roller is not installed tightly and swings left and right;
6. The film is threaded on the wrong roller; (black shaft, dead shaft)
7. The rear feeding tension is too large;
8. The membrane surface is smooth;
12. Question: Fixed-length photoelectric can't keep up?
Answer: 1. The screen is not aligned when passing the connector or the printed surface of the connector is too long;
2. Bag stretching;
3. Wrong polarity;
4. The photoelectric head is not sensitive or there is too much dust on the photoelectric head;
5. The set bag length does not match the actual bag length;
6. The tracking point is not obvious or the tracking point cannot be found;
7. The bag is too wrinkled;
13. Question: Are there two fold marks on the inner fold?
Answer: 1. The three-dimensional panel installation is not in line with the long formwork;
2. The upper and lower pieces of the three-dimensional board are not aligned;
3. The small template is much narrower than the large membrane plate;
4. The large membrane board and the small template are not in the same line;
14. Question: Does a bag that requires airtightness leak?
Answer: 1. Low temperature and low pressure;
2. The ironing cloth placed in the middle is deviated;
3. Uneven film thickness;
4. The sealing knives do not overlap;
5. The speed is too high;
6. The silicone rubber is broken;
7. The hardness of silicone rubber should reach 75%;
15. Question: The correction time is too long?
Answer: 1. The film roll is not installed in the middle of the reel or is not inflated and deviates;
2. Film rolls in series;
3. There is dust on the photoelectric head or it is not sensitive;
4. Broken or missing membrane;
5. Inappropriate tracking location;
6. The photoelectric head and the light position are too high or too low, too far or too close;
7. Correct polarity setting errors in a biased sense;
16. Question: What are the reasons for bags to be sealed on all sides?
Answer: 1. The speed is high, the error is large, the length is unstable, and the sealing knife does not overlap;
2. Stretch through the joint;
3. The sealing knife is inclined or the cutting knife is inclined;
4. The downtime is long, and the bag under the heat sealing knife is stuck in the mouth;
5. The sealing knife is not fixed tightly and moves forward and backward;
Note: The time-shifted photoelectric method for sealing moves the photoelectric device forward and then cuts the knife, and moves the photoelectric device backward and then cuts the knife;
Seventeen: Question: Is the bag too wrinkled and uneven?
Answer: 1. High temperature and high pressure;
2. High air pressure and high tension;
3. The film thickness is uneven;
4. The cooling knife effect is not good;
5. The heat sealing time is long and the waiting time is long.
18. Question: Temperature instability often occurs?
Answer: 1. The movement of other wires interferes with the temperature;
2. There is a problem with the motherboard in the computer;
3. Check whether the thermocouple is loose or falling off;
4. Whether the set temperature corresponds to the set sealing knife;
5. Whether the sealing knife is installed tightly;
6. Whether the wires are broken, burned or loose;
7. Is the switch in the electrical cabinet turned on?
Note: When the temperature is unstable, you can press the unstable sealing number at the channel number and reset the Yasuan number;
19. Question: Does the equipment have an unsupported valve signal?
Answer: 1. The main motor signal is abnormal;
2. There is too much dust and stains on the signal light head;
3. The signal light frame is skewed or loose;
20. Question: Does the equipment appear lower limit in advance?
Answer: 1. The sealing knife has dropped too low, and the height of the sealing knife should be adjusted;
2. The main motor signal light fixing screw is loose;
3. Occurs when feeding and pressing are out of sync; (Adjust the semicircle at the motor signal light)
4. Adjust acceleration and deceleration time if necessary; (parameter)
21. Question: Is the X position deviation too large?
Answer: 1. The middle motor has overcurrent and generates heat; (dissipates heat to the motor)
2. Reduce the middle air pressure and the rear floating roller air pressure; (reduce the drag force)
3. The hot knife is too low and the motor is over-current; (Adjust the height of the hot knife)
22. Question: No color-coded signal?
Answer: 1. Adjust the sensitivity of the photoelectric;
2. The air pressure of the front dragging rubber roller cannot be too small, generally not less than 0.3;
3. There is too much dust and stains on the photoelectric head and needs to be cleaned;
4. The heat sealing knife is cooled until it drops too low; (adjust the knife distance)
5. The set bag length is inconsistent with the actual bag length; (modify bag length parameters)
6. The color mark area is often too small; (not less than 1mm, not more than 3mm)
7. Wrong polarity setting; (change polarity)
23. Question: Does the edge blade cut straight?
Answer: 1. The temperature is too high for scalding;
2. The edge blade is too steep;
3. The edge material machine pulls the edge material too tightly;
4. The rubber roller is uneven in thickness or too dirty;
24. Question: What are the causes of the upturned and concave sides of side-sealed bags?
Answer: 1. Caused by poor tension of raw materials;
2. Caused by the pressure of the longitudinal sealing knife being too high or too low;
3. The distance between the base plates is too small or too large;
4. The temperature is too high;
5. The height of the rear splint of the longitudinal sealing knife is inappropriate;
6. The air pressure of the rear discharging floating roller is too large or too small;
25. Question: What is the problem with the air bubble in the wide sealing knife?
Answer: 1. The silicone rubber is too dirty and the sealing knife is too dirty;
2. Change the position of the sealing knife, change the direction of the sealing knife, and exchange each other;
3. It is related to the width of the force-bearing area of the previous sealing knife;
4. The silicone rubber has been used for too long and needs to be replaced;
5. Put the wide heat sealing knife on the first heating plate where the film passes;
6. The sealing knife must be installed firmly;
26. Question: Does the back seal of the bag wrinkle when passing through the middle rubber roller?
Answer: 1. The back seal is not cooled well;
2. The pressure on the middle rubber roller is uneven;
3. The air pressure is too high;
4. The rubber roller has too much dust;
5. The back seal temperature is too high;
6. The air pressure of the feeding floating roller is too large and the template is installed skew;
27. Question: Is the film at the rubber roller of the front cutter leaning to one side?
Answer: 1. The pressure of the rubber roller is uneven. The pressure on that side is greater, and the film goes in that direction;
2. The photoelectric frame is tilted, lift the front film to go out, and lift the rear film to go in;
3. The punching knife is upturned and not installed tightly;
4. The thickness on both sides of the film is different;
5. The pressure of the horizontal sealing knife is large and uneven. Whichever side has greater pressure, the membrane will go in that direction;
6. The template is installed obliquely;
7. There is a problem with the middle rubber roller, it is unbalanced or the friction coefficient is too large;
28. Question: Is the film on the small template not covered with film?
Answer: 1. The installation of the white roller cannot exceed the template, and the two sides should be 8mm narrower for optimal;
2. The pressure of the feeding rubber roller at the small template is uneven, adjust the pressure at both ends (loose or tight, the amount of each adjustment should be small);
3. The white roller falls off;
4. If the small formwork is installed at an angle, which side is not covered with film, which side should the formwork be inclined to?
5. Adjust the position and angle of the black rubber roller on the film;
6. Increase the pressure on the film-coating roller;
7. The tension of the rear material release is too large;
8. The tension of the membrane is different;
