Blood collection needle injection mold and blood collection needle injection technology

Abstract

The invention relates to the technical field of blood collection needle production and discloses a blood collection needle injection mold and a blood collection needle injection technology. The injection mold is formed by folding an upper mold and a lower mold. At least one mutually corresponding mold cavity is set on the upper mold and the lower mold. Each mold cavity comprises a needle cap cavity and a needle handle cavity which are communicated. A gate and a main runner are set on the lower mold. The gate is communicated with the mold cavity. An injector nozzle communicated with the main runner is set on the upper mold. The gate is located at one end of the needle handle cavity away from the needle cap cavity. A preset included angle is formed between the gate and a plane where the tailend of the needle handle cavity is in. A connection point of the gate and the needle handle cavity deviates from a needle body. The injection technology comprises the steps of placing needles, folding the molds, injecting plastic and opening the molds. According to the injection mold and the injection technology, through modification of a gate location and through adjustment of a plastic injection direction, the problem that an injection molded blood collection needle body penetrates into skin insufficiently and pain is increased due to the fact that the injection molded blood collection needle body is liable to translate in a needle handle is solved. The injection technology is carried out through utilization of the corresponding injection molds, so injection technology steps such as cutting and manual checking are reduced, and the cost is reduced.

Description

Technical field [0001] The invention relates to the technical field of production of blood collection needles, in particular to an injection mold for blood collection needles and an injection process thereof. technical background [0002] In the prior art, blood collection needles are all molded by injection molding machines. Before injection molding, the needle body should be placed at the corresponding position of the lower mold, and then the injection molding machine should perform injection molding procedures such as mold closing. When the traditional injection mold is injecting, its injection port (glue inlet) is at the top of the needle cap, and its injection direction is horizontal. When the injection is started, it will give the needle a force to the end of the needle handle. Therefore, the position near the end of the needle handle on the traditional injection mold needs a needle body limiting rod, which leads to the hollow structure of the needle handle of the injection...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a blood collection needle injection mold and a blood collection needle injection molding process. The injection mold solves the problem of blood collection in injection molding in the prior art by modifying the position of the glue inlet and adjusting the direction of the glue inlet. The needle body is easy to move in the needle handle, resulting in insufficient penetration into the skin and increasing pain; and the injection molding process is carried out through the corresponding injection mold, reducing cutting, human inspection, counting and other corresponding injection molding process steps, saving costs

Images