Positive pressure sealing performance test device and method for syringe

Abstract

The invention discloses a positive pressure sealing performance test device and method for a syringe. The detection device comprises a first support frame, a second support frame, a telescopic rod, and a weight frame, wherein the upper end of the first support frame is provided with a first mounting part for mounting a syringe; the second support frame is located at one side of the first support frame, and the upper end of the second support frame is provided with a second mounting part; the telescopic rod is located on the second mounting part of the second support frame, the output end of the telescopic rod faces the first support frame, and the output of the telescopic rod is used for providing an axial force for a core rod of the syringe on the first support frame; the weight frame comprises a hook and a weight carrying tray, the hook is detachably connected to the core rod of the syringe, the weight carrying tray is used to carry a weight, and the weight on the weight carrying tray is used to provide a lateral force for the core rod of the syringe. The positive pressure sealing performance test device for the syringe disclosed by the invention can effectively detect the sealing performance of the syringe when the syringe is subjected to the axial force and the lateral force at the same time, and the detection method is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of structural design of a syringe performance testing device, in particular to a positive pressure sealing performance testing device and method for a syringe. Background technique [0002] The existing tightness test is generally a test of the liquid leakage of the syringe under the condition of axial force, but in reality, the syringe may also be subjected to lateral force, if the sealing performance of the syringe can only meet its In the case of axial force, when it is subjected to lateral force, liquid leakage will still occur at the piston or sealing ring of the syringe, and the existing detection device cannot test the syringe when it is subjected to axial force and lateral force at the same time. The sealing performance of the syringe. [0003] According to national standards, existing syringes need to be tested for their tightness. The existing test for the tightness of syringes subjected to positi...

AI Technical Summary

Problems solved by technology

[0002] The existing tightness test is generally a test of the liquid leakage of the syringe under the condition of axial force, but in reality, the syringe may also be subjected to lateral force, if the sealing performance of the syringe can only meet its In the case of axial force, when it is subjected to lateral force, liquid leakage will still occur at the piston or sealing ring of the syringe, and the existing detection device cannot test the syringe when it is subjected to axial force and lateral force at the same time. Syringe Sealing Performance

[0003] According to national standards, existing syringes need to be tested for their tightness. The existing test for the tightness of syringes subjected to positive pressure generally first applies lateral force to the core rod of the syringe through the push rod, and then Apply a small axial force to the core rod, and then fully apply the axial force after removing the lateral force. In other words, the existing test device cannot provide a continuous and stable lateral force, which makes the existing test device and method unable Accurately test syringe seals when subjected to positive pressure

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