Feed guide type rubber extruding machine swivel nut

Abstract

The invention discloses a feed guide type rubber extruding machine swivel nut which comprises a front swivel nut and a rear swivel nut, wherein the front swivel nut and the rear swivel nut are movably connected with each other; a feeding opening and a feeding section are arranged on the rear swivel nut; a conical inner thread large-lead spiral groove is formed in an inner hole between the feeding opening and the feeding section. Through the adoption of the conical inner thread large-lead spiral groove, the radial friction to a rubber material when being rotated in the feeding opening and the feeding section along with a screw rod is increased, so that the rubber material can be rapidly changed into linear forwarding from rotation at the feeding section, the feeding opening is enabled to hold the material sufficiently and stably, the rubber material is sufficiently plasticized, particularly the rubber material is prevented from sliding at the feeding opening when the rotation speed of the screw rod is increased, the situation that the rubber material is not sufficiently held at the feeding opening before improvement is completed, the extrusion quality and the rubber yield of the screw rod are greatly improved, and the production capacity is greatly improved; moreover the feed guide type rubber extruding machine swivel nut has the characteristics that the structure is reasonable, the rubber guide speed is fast, the rubber raw material application range is large, and the extrusion efficiency is high.

Description

[0001] technical field [0002] The invention belongs to the field of rubber extrusion used in the electric wire and cable industry, and in particular relates to a screw sleeve of a material-guiding type rubber extruder. Background technique [0003] The role of the screw sleeve in the feeding section is to cooperate with the screw to make the added rubber material gradually change into a linear motion with the rotation of the screw, and move toward the machine head, and cooperate with the screw to compress and generate heat, soften and stir, and mix the rubber. [0004] At present, most of the existing screw sleeves are monolithic, and their inner holes are smooth. This kind of integral screw sleeve is difficult to process, and it is difficult to guarantee the shape and position tolerance, and it is labor-intensive and time-consuming. In production and use, it is often scrapped as a whole due to the local wear of the feeding section of the screw sleeve, and when extruding...

AI Technical Summary

Problems solved by technology

This kind of integral screw sleeve is difficult to process, and it is difficult to guarantee the shape and position tolerance, and it is labor-intensive and time-consuming

In production and use, it is often scrapped as a whole due to the local wear of the feeding section of the screw sleeve, and when extruding the rubber, because the inner hole of the feeding section of the screw sleeve is smooth, it is easy to cause the rubber to slip in the feeding section of the feeding port and affect the normal feeding. material

Especially when the screw speed increases, it is more likely to produce insufficient "feeding material", which will lead to defects in the appearance of the extruded wire and cable products, low labor productivity, increased scrap rate, and a substantial increase in product costs

[0005] Therefore, the structure design of the screw sleeve feeding section of the existing rubber extrusion machine is unreasonable, the extrusion speed of the rubber material is slow, and the range of suitable rubber raw materials is small.

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