Injection quality detection method of L-shaped water pipe used for ice production water storage box of refrigerator and detection device

Abstract

The invention relates to an injection quality detection method of an L-shaped water pipe used for an ice production water storage box of a refrigerator and a detection device. The detection method includes the following steps: recording air pressure A of an air source at the time when the same is not communicated onto the to-be-detected water pipe; communicating the air source to one end of the to-be-detected water pipe, and recording air pressure B of the air source; comparing a first difference value of the air pressure B and the air pressure A and a standard difference value range, determining a product as qualified if the same is in the range, and determining the product as unqualified if the same is out of the range; closing the other end of the to-be-detected water pipe, recording air pressure C in the to-be-detected water pipe, comparing a second difference value of the pressure C and a standard value and a first standard difference value, and determining the product as unqualified if the second difference value is greater than the first standard difference value; and if the second difference value is less than the first standard difference value, stopping air intaking, recording air pressure D, comparing a third difference value of the air pressure D and the air pressure C and the second standard difference value, determining the product as qualified if the third difference value is less than the second standard difference value, and determining the product as unqualified if the third difference value is greater than the second standard difference value. Through themethod, a detection result on injection quality of the water pipe is accurate, and detection speed is high.

Description

technical field [0001] The invention relates to a detection method and a detection device for the injection molding quality of an L-shaped water pipe used in an ice-making water storage box for a refrigerator. Background technique [0002] The refrigerator has a water storage box and an ice making box. The water storage box is used to temporarily store the purified water before ice making. After the ice is taken out, the purified water stored in the water storage box will be automatically pumped to the ice making machine. In the ice box, when the ice making function is turned on, the water pipe connected to the water pump needs to be made into an L shape. The L-shaped water pipe is inserted at the bottom of the water storage box, and the other end is above the ice making box. Since the ice box needs to be pulled out and reversed, it is impossible to install a sensor to sense the water volume. In order to accurately measure the water volume in the ice box, the only way to ens...

AI Technical Summary

Problems solved by technology

Since the ice box needs to be pulled out and reversed, it is impossible to install a sensor to sense the water volume. In order to accurately measure the water volume in the ice box, the only way to ensure the ice box is to control the water output of the water pump and the sealing during pumping. Therefore, the injection molding quality of the L-shaped water pipe is particularly important. If the quality of the L-shaped water pipe is not up to standard, it will seriously affect the pumping flow and sealing performance.

In the prior art, in the production process of L-shaped water pipe injection molding, two mold needles need to be inserted from two directions of 90 degrees. Due to the problem of the cooperation of the two mold needles, burrs are prone to appear at the 90-degree corner. The result is that the water flow in the pipeline will be affected, and the water volume of the ice box will be affected when it is finally installed on the refrigerator; There is a risk of cracks, which may cause air to enter when the water pump pumps water, and also cause insufficient water in the ice box

The above two problems are unavoidable in the current production process and may appear at any time, requiring 100% inspection before assembly, so a fast and accurate detection method is needed

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