The automatic blow molding machine blows automatically […]
The automatic blow molding machine blows automatically without manual operation, but the automatic blow molding machine will inevitably fail. The editor will share the common faults and solutions of the automatic blow molding machine based on the common problems of the market customer automatic blow molding machine. , For your reference.
(1) The bottom forming is not full
Reasons: 1. The blowing pressure is not enough 2. The preform temperature is slightly lower when blowing
Solution: 1. Check whether the high-pressure filter on the side of the mold is unblocked, so as not to affect the high-pressure gas supply
2. Check the working condition of the road valve to ensure that the air blowing 1 and blowing 2 are positioned accurately
3. Check the airflow control elements of blow 1 and blow 2, to ensure that the set value is correct and the interior is unblocked
4. Ensure that all the ventilation holes on the mold are not blocked
(2), neck bend
Reasons: 1. Caused by mechanical operation, the neck part is too thick to cause deformation after closing the mold
Solution: 1. Optimize the clamping structure
2. The convex ring is clamped too tightly in the recess of the mold top plate, and the size of the preform must be fixed when it is still hot.
(3), bottle mouth expansion, blowing bottle out of gas
Reasons: 1. The surrounding temperature is too high 2. The airflow cooling effect of the oven is low
Solution: 1. Adjust the position of the cooling shift so that it can provide stronger protection to the thread of the preform.
2. Optimize the design and structure of the cooling plate
(4), the bottom line is blue
Reasons: 1. Blowing too high 2. Lack of stretching rod pressure
Solution: 1. Set the blowing time and speed 2. Check whether the stretch rod is blocked
(5), the bottom is broken
Reasons: 1. The temperature at the bottom of the preform is too low 2. The position of the stretch rod is too high
Solution: 1. Adjust the heating temperature at the bottom of the preform 2. Adjust the position of the stretch rod reasonably
(6), the threaded part of the bottle mouth is damaged
Reason: the threaded area has suffered undue stretching, and the surrounding high temperature makes the temperature of the preform threaded area too high
Solution: 1. Ensure that the conveying arm is adjusted accurately
2. Precise positioning of the preform, while reducing the heating temperature of the threaded area, and optimizing the structural design
(7), the liquid level drops too much
Reason: After the pet container is filled, the solution drops and the blowing temperature is too high, forming pearlescence
Solution: Adjust the temperature of the heating furnace to avoid heating or cold starting.
Reasons: 1. The bottom of the bottle is too thin due to high temperature 2. The blowing time is too short
Solution: 1. Adjust the bottom temperature of the bottle 2. Lengthen the delay blowing time
(9), the parting line is flattened
Reason: During the blowing process, the gas cannot be discharged from the vent hole in time, and the thin layer of material forming the bottle wall blocks the vent hole
Solution: 1. Correctly adjust the mold gap 2. High pressure air valve to control the air flow 3. Improve the design structure
(10), bottom wrinkles
Reason: The external crease blowing pressure 1 is not enough, and the stretching rod is too much to push the material down;
The internal wrinkles are generally overheated at the tip of the preform or the stretching pressure is delayed at the beginning
Solution: 1. Ensure that the blowing bottle 1 is continuously consistent on the mold at the timing
2, do not overheat the end of the preform
3. Make sure that the delay from the start of stretching to the time before blowing 1 enters is not too long.
(11), thermo bottle
Reason: The bottle is overheated, causing recrystallization inside or outside the preform, causing bottle burst
Solution: 1. Stretching time is too long 2. Lower the position of the cooling plate
(12), the section weight is uneven (the neck is too heavy)
Reasons: 1. The stretching rod will gradually become cold when stretched from bottom to top, the material is very thin, and the cooling will be accelerated
Solution: 1. Adjust the position of the hot spot to solve the preform body
2, adjust the position of the cooling plate
(13), bottom eccentric
Reasons: 1. Conveying and aligning problems 2. The back door is not in agreement with the bottle
Solution: 1. Adjust the conveying and alignment of the preform mold 2. The tension rod pressure setting is too low
3. Blowing 1 pressure is too high and too early 4. Stretch rod cushion setting is inappropriate.
(14), pearlescent-foot hair
Reason: The root cause is cold bottles. The direct result of stretching exceeding the natural stretching limit is actually the onlooker structure of the bottle being stretched
tear, the formed tear point becomes visible pearl after reflection.
Solution: 1. Make sure that the bottom of the bottle is in the center 2. Reduce the speed of the bottle blowing machine 3. Blowing 1 Air intake is late, stretch rod and preform
Too long contact.
(15), the bottom gap is out of tolerance
Reason: Exceeding the natural stretch limit
Solution: 1. Strengthen the heat dissipation to the bottom of the bottle 2. Heat and cool the whole preform, and raise different temperatures from around the sides 3.
3, to ensure the normal circulation of mold cooling water