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Common defects and solutions of bottle cap ring cutting process

Update:03-04-2020

The bottle cap cutting ring is a very important part of the bottle cap manufacturing process. It is not only related to the appearance of the product, but also directly affects the function of the bottle cap. If the bottle cap cutting ring is abnormal, the bottle is light. There are bumps and scratches on the outside of the cap. In the case of broken bridges or broken rings on the filling line, the failure of the cut ring to penetrate the bottle cap leads to the failure of the anti-theft ring and incurs customer claims.

1 The anti-theft ring cracks or breaks after the cap is trimmed

Generally speaking, cracks or breaks after the anti-theft ring is tangent can be found in the appearance inspection of the bottle cap. In this case, we must first distinguish whether the fixed model number is fixed. If it is a fixed model number, we will focus on checking the mold in question. If it is a non-fixed model number, it is important to check whether there is any abnormality in the thickness of the bottle cap, the equipment turntable track, the cutter, etc. The following is the troubleshooting process for cracking and breaking after the anti-theft ring is tangent: 2

Bottle cap cutting ring tension value needs to be strictly tested and recorded in daily data. We can get the extreme value, standard deviation and other information of the cutting ring tension through a large number of ring cutting data. If the data's extreme value and If the standard deviation is too large, the state of the early warning ring cutting machine has gradually deteriorated, and maintenance and adjustments need to be made when the production is idle. The following is the inspection process of the bottle cap cutting ring exceeding the tensile value:

3 The cover is scratched or scratched

Scratches or knocks on the cap are one of the most common tangent defects, usually caused by the cap inside the ring cutting machine and the cap delivery channel. You need to carefully check the cap and the machine according to the location and size of the scratches and knocks Possible contact parts, and then check step by step, be sure to sharpen the sharp corners and potential damage to the position of the bottle cap.

4 Card cover or collapse

Capping or collapsing means that the bottle cap is severely damaged and deformed inside the ring cutting machine. Some bottle caps will be thrown out of the ring cutting machine. Once this bottle cap is transported to the filling line, it will cause the cap delivery track to be stuck and sealed The cover is abnormal, and the card cover of the ring cutting machine is usually caused by the misalignment or mismatch of the ring cutting mold or the star wheel. Many times we need to manually rotate the ring cutter, enter the cap at a slow speed, focus on observing the state of each cap when it enters the star wheel turntable and mold, and check whether the cap is lifted or jumped during the movement process. If the movement is not smooth, there is a very high risk of jamming or collapse.

5 Thread crush

Thread crush is a relatively serious defect, and it is not easy to be found in the random inspection. If the thread crushed bottle cap enters the filling line, it will cause high or skewed caps. Many bottle cap companies include thread inspection as a daily priority. Sampling inspection project. Thread crush is generally caused by the ring-cutting die, the most fundamental reason is that the die and the star wheel do not match

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Common defects and solutions of bottle cap ring cutting process
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