Precautions for quality control of pipette tip mold production
发布时间:2022-08-23 10:18:04
Mold base: When testing the mold base, it is necessary to focus on measuring whether the inner frame of the mold is eccentric, and at least two layers are measured on the upper and lower sides of the inner frame, in order to prevent the inner frame from being tapered up and down; Mold core: During the mold core measurement, the glue level, insertion position, touch-through position and other positions are mainly controlled and controlled, and the balance of the amount of glue feeding also needs to be controlled; Inserts: The measurement of the inserts should be strictly controlled according to the 2D drawing, and the concentricity of the inserts should be carefully controlled to prevent the inserts from being misaligned and affecting the concentricity of the molded product; Appearance: The appearance of the pipette tip belongs to the high-gloss structure, which directly affects the accuracy of the liquid stored in the tip. Therefore, the highlight position of the mold structure needs to be checked for scratches, bumps, deformation, abnormal polishing and other problems. The control of molded products is also an important link, monitoring the changing trend of product quality, detecting abnormal situations in time, and preventing the recurrence of problems. The following points should be focused on: Appearance: There are no obvious bubbles, scratches, bumps on the surface of the product, no burrs at the suction nozzle, no residual burrs on the clamping line, and the inner wall of the suction head should be smooth to prevent residual liquid from affecting the test accuracy; size: ①The size of the sealing part of the suction head needs to be carefully controlled, and the angle of the inner wall of the product can be calculated by using the three-dimensional measurement cone; ②The concentricity of the product directly affects the sealing effect and the accuracy of the stored solution, which needs to be controlled; Sealing performance: ①Visual inspection: let the pipette stand vertically for 15 seconds after sucking the liquid, and observe whether there are droplets flowing out slowly; ②Pressure detection: Use special testing equipment to detect the pressure condition and judge whether the tightness is qualified. More details can be found on the official website of Wuxin New Materials. https://www.wuxinxcl.com/ |