Solutions to common problems of automatic bottle blowing machine blowing bottle

Update: 2021/05/07
Abstract:

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.

  (8), burst

   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

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