阅读说明：本技术 一种护套多色条挤制装置及挤制方法 (Sheath multicolor strip extrusion device and extrusion method ) 是由 沈小平 张国胜 景冬冬 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种护套多色条挤制装置,包括挤出机头,所述挤出机头的端部为下大上小的圆台结构的挤出通道,所述挤出机头的端部外套设有分流器,所述分流器设置有通孔,所述通孔与挤出机头上端的挤出通道接触,所述分流器侧壁上开设有多个相互独立的注塑孔,所述注塑孔贯穿分流器侧壁与通孔连通。本发明一种护套多色条挤制装置,通过分流器对注塑料以及作为色条的多种颜色的塑料同时挤制出,现对于现有技术通过喷码或者压印色条的方案,其使用寿命更长,色条零色差,色条与与护套完美融合,光缆护套实现整体耐磨损的要求。(The invention discloses a sheath multicolor strip extrusion device which comprises an extruder head, wherein the end part of the extruder head is an extrusion channel of a round table structure with a large lower part and a small upper part, a shunt is sleeved outside the end part of the extruder head and provided with a through hole, the through hole is contacted with the extrusion channel at the upper end of the extruder head, a plurality of mutually independent injection molding holes are formed in the side wall of the shunt, and the injection molding holes penetrate through the side wall of the shunt and are communicated with the through hole. According to the sheath multi-color bar extrusion device, the injection molding material and the plastic with multiple colors as the color bars are extruded simultaneously through the flow divider, so that the service life is longer, the color bars have zero color difference, the color bars and the sheath are perfectly fused, and the optical cable sheath meets the requirement of integral abrasion resistance.)

1. A sheath polychrome strip extrusion device which characterized in that: including extruding aircraft nose (1), passageway (2) is extruded to the inside round platform type that is provided with big end down of extruding aircraft nose (1), the tip overcoat of extruding aircraft nose (1) is equipped with external mold (3), external mold (3) are provided with through-hole (4), through-hole (4) and extrusion passageway (2) contact of extruding aircraft nose (1) upper end, a plurality of mutually independent injection molding holes have been seted up on external mold (3) lateral wall, the injection molding hole runs through external mold (3) lateral wall and through-hole (4) intercommunication.

2. A sheath multicolor strip extrusion apparatus according to claim 1, wherein: the direction of the injection molding hole is obliquely upward, and the injection molding hole comprises a first injection molding hole (5) and a second injection molding hole (6).

3. A sheath colorstripe extrusion apparatus as claimed in claim 2 wherein: the first injection molding hole (5) and the second injection molding hole (6) are both of rectangular structures, the width of the first injection molding hole (5) is smaller than that of the second injection molding hole (6), and the height of the first injection molding hole (5) is equal to that of the second injection molding hole (6).

4. A sheath colorstripe extrusion apparatus as claimed in claim 3 wherein: the side wall of the outer die (3) is provided with an upper separation groove (7) and a lower separation groove (8), the first injection molding hole (5) is located in the upper separation groove (7), and the second injection molding hole (6) is located in the lower separation groove (8).

5. A sheath multicolor strip extrusion apparatus according to claim 4, wherein: the inlet of the first injection molding hole (5) and the inlet of the second injection molding hole (6) are not in the same vertical plane in the vertical direction, the outlet of the first injection molding hole (5) and the outlet of the second injection molding hole (6) are in the same vertical plane in the vertical direction, and the center lines of the first injection molding hole and the second injection molding hole are in the same straight line.

6. A sheath multicolor strip extrusion apparatus according to claim 1, wherein: the outer die (3) is in threaded connection with the extruder head (1).

7. A sheath multicolor strip extrusion apparatus according to claim 6, wherein: the aperture of the through hole (4) of the outer die (3) is equal to the diameter of the small end of the extrusion channel (2), and the circle centers of the through hole and the small end are located on the same straight line.

8. A sheath multicolor strip extrusion method comprises the following steps:

step S1: extruding the black sheath material upwards from an extrusion channel (2) of an extruder head (1);

step S2: colored plastics are introduced into the second injection molding holes (6) to cover the surfaces of the black sheath materials to form first color strips;

step S3: colored plastic is introduced from the first injection molding hole (5) to cover the first layer of color strips to form second layer of color strips.

9. A method of extruding a sheath ribbon of multiple colors according to claim 8, wherein: the first layer of color stripes and the second layer of color stripes form ABA type color stripes.

Technical Field

The invention belongs to the technical field of optical cables, and particularly relates to a sheath multicolor strip extrusion device and an extrusion method.

Background

In the prior art, the color bar on the sheath is formed by code or mechanical pressing, so that the color bar is attached to the surface of the sheath, and the color bar manufactured by the method has short service life and is not wear-resistant.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a sheath multi-color strip extrusion device, which is used for overcoming the defects of the prior art.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

a sheath multi-color bar extrusion device, wherein: including the extruder head, the tip of extruder head is the extrusion passageway of big-end-up's round platform structure down, the tip overcoat of extruder head is equipped with the external mold, the external mold is provided with the through-hole, the through-hole contacts with the extrusion passageway of extruder head upper end, a plurality of mutually independent injection molding holes have been seted up on the external mold lateral wall, the injection molding hole runs through external mold lateral wall and through-hole intercommunication.

In order to optimize the technical scheme, the specific measures adopted further comprise:

further, the direction of the injection molding holes is obliquely upward, and the injection molding holes comprise a first injection molding hole and a second injection molding hole.

Furthermore, the first injection molding hole and the second injection molding hole are both of rectangular structures, the width of the first injection molding hole is smaller than that of the second injection molding hole, and the height of the first injection molding hole is equal to that of the second injection molding hole.

Furthermore, the side wall of the outer die is provided with an upper separation groove and a lower separation groove, the first injection molding hole is positioned in the upper separation groove, and the second injection molding hole is positioned in the lower separation groove.

Furthermore, the inlets of the first injection molding hole and the second injection molding hole are not in the same vertical plane in the vertical direction, the outlets of the first injection molding hole and the second injection molding hole are in the same vertical plane in the vertical direction, and the center lines of the first injection molding hole and the second injection molding hole are in the same straight line.

Further, the outer die is in threaded connection with the extruder head.

Furthermore, the aperture of the through hole of the outer die is equal to the diameter of the small end of the extrusion channel, and the circle centers of the through hole and the small end of the extrusion channel are located on the same straight line.

A sheath multicolor strip extrusion method comprises the following steps:

step S1: extruding the black sheath material upwards from an extrusion channel of an extruder head;

step S2: introducing colored plastics into the second injection molding hole to enable the plastics to cover the surface of the black sheath material to form a first layer of color strips;

step S3: and introducing colored plastic into the first injection molding hole to cover the plastic on the first layer of color strips to form second layer of color strips.

Further, the first layer color bars and the second layer color bars form ABA type color bars.

The invention has the beneficial effects that:

according to the sheath multi-color bar extrusion device and the extrusion method, the injection molding material and the plastic with various colors as the color bars are simultaneously extruded through the outer die, and the scheme of spraying codes or impressing the color bars in the prior art is longer in service life, zero color difference exists in the color bars, the color bars are perfectly fused with the sheath, and the optical cable sheath meets the requirement of integral abrasion resistance.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

fig. 2 is a schematic view of the external mold structure of the present invention.

The reference signs are: the extrusion device comprises an extruder head 1, an extrusion channel 2, an outer die 3, a through hole 4, a first injection molding hole 5, a second injection molding hole 6, an upper separation groove 7 and a lower separation groove 8.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

As shown in figure 1, the invention relates to a sheath multicolor strip extrusion device, which comprises an extrusion head 1, wherein the end part of the extrusion head 1 is provided with an extrusion channel 2 with a round table structure with a large lower part and a small upper part, the outer side of the extrusion head 1 is in threaded connection with an outer die 3, a through hole 4 is arranged in the middle of the outer die 3, the through hole 4 is in contact with the extrusion channel 2 at the upper end of the extrusion head 1, the aperture of the through hole 4 of the outer die 3 is equal to the diameter of the small end of the extrusion channel 2, and the.

A plurality of mutually independent injection molding holes are formed in the side wall of the outer mold 3, the injection molding holes penetrate through the side wall of the outer mold 3 and are communicated with the through hole 4, the direction of the injection molding holes is oblique upward, the injection molding holes comprise a first injection molding hole 5 and a second injection molding hole 6, the side wall of the outer mold 3 is provided with an upper separation groove 7 and a lower separation groove 8, the upper separation groove 7 and the lower separation groove 8 are used for separating sheath materials and color bar materials before forming a sheath, the first injection molding hole 5 is located in the upper separation groove 7, the second injection molding hole 6 is located in the lower separation groove 8, meanwhile, an arc-shaped processing hole is formed in the upper separation groove 7, processing of parts is facilitated, inlets of the first injection molding hole 5 and the second injection molding hole 6 are not located in the same vertical plane in the vertical direction, outlets of the first injection molding hole 5 and the second injection molding hole 6 are located in the same vertical plane in the vertical direction, and center lines of the first.

A sheath multicolor strip extrusion method comprises the following steps:

step S1: extruding the black sheath material upwards from an extrusion channel 2 of an extruder head 1;

step S2: colored plastics are introduced into the second injection molding holes 6, so that the plastics cover the surface of the black sheath material to form a first layer of color strips;

step S3: colored plastic is introduced from the first injection molding hole 5, so that the plastic covers the first layer of color strips to form second layer of color strips.

The first layer of color stripes and the second layer of color stripes form ABA type color stripes.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.