Detachable gradual type right-angle rubber pipe extrusion die pre-forming segment design method

A design method and extrusion die technology, which are applied in the design field of the pre-forming section of a detachable progressive right-angle rubber hose extrusion die, can solve problems such as high energy consumption, achieve strong adaptability, reduce extrusion energy consumption, and improve extrusion rate. Effect

Active Publication Date: 2019-07-16
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0005] The purpose of the present invention is to propose a detachable progressive right-angle rubber hose extrusion die pre-forming section design method that overcom

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  • Detachable gradual type right-angle rubber pipe extrusion die pre-forming segment design method
  • Detachable gradual type right-angle rubber pipe extrusion die pre-forming segment design method
  • Detachable gradual type right-angle rubber pipe extrusion die pre-forming segment design method

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Embodiment Construction

[0018] The technical solutions of the present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0019] The design method of the preforming section of the detachable progressive right-angle rubber hose extrusion die of the present invention is to design the flow-distributing and flow-blocking structure in the cavity of the pre-forming section as a flow-distributing and flow-blocking ring block 1 that is snap-fitted and fastened to the middle of the mold core 2 with screws. , the clamping structure includes a square card slot 4 set in the center of the bottom of the shunt block 1 and a square seat 2-1 set in the lower part of the mold core 2, the block ring surface of the shunt block 1 The design is symmetrical on the left and right sides, and the width of the flow-blocking ring surface on each side gradually decreases from top to bottom. The front end of the ring block 1 is designed as a slope with the bottom slo...

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Abstract

The invention discloses a detachable gradual type right-angle rubber pipe extrusion die pre-forming segment design method. A flow dividing and resisting structure is designed to a flow dividing and resisting annular block clamped on a die core, the flow resisting annular face of the flow dividing and resisting annular block is designed to be symmetric on the left and right side, the width of the annular face is gradually reduced from top to bottom, the front end face of the flow dividing and resisting annular block is designed to the perpendicularity, the rear end face is designed to be inclined towards the lower front portion, the width of a plastic melt circulation channel formed between the flow dividing and resisting annular block and an extrusion die pre-forming die cavity is gradually increased to the lower portion of the die core from top to bottom, in the forward extrusion direction, the length of the plastic melt circulation channel is gradually reduced from top to bottom, a front guide conical face and a rear guide conical face which are connected with the front portion and the rear portion of the die core are arranged on the front end and the rear end of the flow dividing and resisting annular block. The traditional sudden change type flow dividing structure is designed to the gradual flow dividing structure, the extrusion rate of the plastic melt along the circulation channel is evenly distributed, the extrusion rate is improved, and the extrusion energy consumption is reduced.

Description

technical field [0001] The invention relates to a design scheme of a rubber hose extrusion die, in particular to a design method for a detachable progressive right-angle rubber hose extrusion die preforming section. Background technique [0002] Wire and cable is a wire product that transmits electric / magnetic energy, information, and realizes electromagnetic energy conversion. It is widely used in industrial fields such as power cables, overhead lines, electrical equipment, communication cables, and enameled wires. It is composed of one or more insulated wires inside. The core and its respective cladding layer, total protective layer and outer sheath. Insulated wire cores and plastic sheath materials on the outside of conductive metal usually include polyvinyl chloride, polyethylene, polypropylene, polyolefin, polyurethane, and ethylene-propylene rubber. [0003] The overmolding of the plastic sheath and insulating layer usually adopts right-angle extrusion overmolding, an...

Claims

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Application Information

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IPC IPC(8): B29C48/32B29C48/34
CPCB29C48/32B29C48/34
Inventor 闫普选王梦沂卢江荣王玉峰韩飞雪申笑炎
Owner GUILIN UNIV OF ELECTRONIC TECH
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