Deep port U-shaped bend rigidity rotation core pulling die

Abstract

The invention provides a deep port U-shaped bend rigidity rotation core pulling die, and belongs to the technical field of dies. The deep port U-shaped bend rigidity rotation core pulling die solves the technical problems that according to an existing U-shaped bend die rotation core pulling mechanism, after pipe fitting forming and demoulding, in-place demoulding cannot be guaranteed, and the inner walls of pipe fittings are possibly damaged. The U-shaped bend rotation core pulling die comprises a fixed die and a movable die. The movable die is internally provided with two straight cores and two bend cores. A die cavity for injection molding is formed by the fixed die, the movable die, the straight cores and the bend cores. The two sides of the die cavity are provided with rotation parts corresponding to the two straight cores. The two rotation parts are in sliding connection into the movable die and can rotate around the axes of the arcs where the bend cores are located. The outer sides of the rotation parts are provided with extension arms fixedly connected with the end portions of the corresponding bend cores. The sides, facing the corresponding rotation parts, of the straight cores are provided with straight grooves, the straight grooves extend to the end faces of the straight cores in the axial direction of the straight cores, and the extension arms are embedded in the straight grooves and close the straight grooves. By means of the U-shaped bend core pulling die, the U-shaped bend demoulding yield can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of moulds, and relates to a rigid rotary core-pulling mold with a deep mouth U-shaped elbow. Background technique [0002] The rapid development of the plastics industry and the huge market demand have brought opportunities and challenges to Chinese mold companies. As the core means of industrial manufacturing, mold plays a decisive role in product quality, variety, output, and even cost. The level of mold design and manufacturing technology directly reflects the country's design and development capabilities and manufacturing level. Develop molds with independent core technology, precision, complexity and special purposes to improve the technical level of my country's plastic molds and promote the development of the mold industry. In industrial products, people often require curved shapes such as U-shaped and curved shapes. Products, such as automobile intake pipes, industrial instruments and meters, and pla...

AI Technical Summary

Problems solved by technology

However, there are still some shortcomings: after the pipe fittings are molded and demoulded, the demoulding cannot be guaranteed in place, and the pipe fittings still need to be taken out manually, which has operational risks and low efficiency. Cause damage to the inner wall of the pipe fitting

In order to ensure efficiency, technicians in the field may consider using a hinge to connect the straight core and the bent tube core, which improves the efficiency to a certain extent, but there will still be a large gap between the bent tube core and the inner wall of the pipe during the core pulling process. Force, easy to produce defective products and has a large limit on the size of U-shaped tubes

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