Assembling and positioning jig in blood sampling needle automatic assembling equipment

Abstract

The invention relates to an assembling and positioning jig in blood sampling needle automatic assembling equipment, which is characterized in that aiming at a needle core spring assembly (14) in a blood sampling needle, the assembling and positioning jig is provided with a base (1); at least one station (13) for positioning the needle core spring assembly (14) is arranged on the base (1); a U-shaped positioning groove (11) is arranged at the position on the station (13), which corresponds to a shaft neck (8) of a needle core (3) in the needle core spring assembly (14); a positioning end face (12) is arranged at the end of the U-shaped positioning groove (11), which corresponds to a first end face (9) of the needle core (3); a magnetic positioning block (2) is arranged at the position on the station (13), which corresponds to the tail part of a spring (4) in the needle core spring assembly (14), so as to form a positioning structure of the needle core spring assembly (14). The assembling and positioning jig in the scheme can be used for positioning the needle core spring assembly when the blood sampling needle is automatically assembled, the yield of a product is greatly improved and the blood is ensured to be successfully sampled by the blood sampling needle.

Description

technical field [0001] The invention relates to automatic assembly equipment for blood collection needles, in particular to a positioning jig for assembling a three-piece set of a needle core, a spring and a tail cap in the automatic assembly equipment for blood collection needles. Background technique [0002] Lancets are used to collect blood samples during medical tests. There are many types of blood collection needles, with Figure 1-2 Shown is a single-use safety lancet. This blood collection needle is made up of needle core 3, spring 4, pusher 7, shell 6 and tail cap 5, wherein shell 6 and tail cap 5 form an ejection chamber, needle core 3 is located in the ejection chamber, and needle core 3 is provided with There is a needle body, and the front end of the needle core 3 is detachably connected with one end of a protective rod 15 by a neck that can be twisted off. The needle core 3 has a journal 8 and a first end face 9, and the other end of the protective rod 15 is ...

AI Technical Summary

Problems solved by technology

However, when the needle core 3 is pulled, the needle core 3 will easily drive the spring 4 to move, causing the tail of the spring 4 to tilt up.

The above-mentioned problems will lead to the result that the card 10 cannot be stuck on the spring 4, or the card 10 is not stuck on the correct coil position at the tail of the spring 4, and eventually the spring 4 cannot launch the needle core correctly when the assembled blood collection needle is in use. 3. Blood sampling failure

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