CN218447375U - Extrusion molding die for bunched insulated cable - Google Patents

Abstract

An extrusion molding die for a bunched insulated cable relates to the technical field of cable production and comprises a die body, wherein the die body comprises a feeding end and a discharging end which are opposite, a molding cavity is arranged in the die body, the die body is provided with at least three mutually parallel wire passing channels, and the plurality of wire passing channels are arranged around the axis of the die body; the mould body still is provided with supplementary feedstock channel, and supplementary feedstock channel includes feeding section and ejection of compact section, goes out the axial of material section along the mould body and runs through first terminal surface and die cavity intercommunication, and the one end and the feeding section intercommunication of die cavity are kept away from to ejection of compact section, and the feeding section is along the radial outer peripheral face that extends to the mould body of mould body and form supplementary feed port. This insulated cable tied in a bundle is with extrusion moulding mould's simple structure, convenient to use, it has increased supplementary feedstock channel between the wire passing channel, directly pours into plastics into between the heart yearn into to improve the closely knit nature of cable central zone, improved the life of cable.

Description

Extrusion molding die for bunched insulated cable

Technical Field

The utility model relates to a cable preparation technical field particularly, relates to an extrusion moulding mould for insulated cable tied in a bundle.

Background

The plastic extruder is one common apparatus for producing cable, and has screw in certain shape rotating inside a heated barrel to extrude plastic from a material bin, so that the plastic is plasticized homogeneously and extruded through a machine head and molds in different shapes to form continuous plastic layer in different shapes to cover the cable core and cable.

A multi-core cable is a commonly used cable, and a plurality of core wires are distributed around the axis of the cable during preparation and then extruded. The plastic used in the extrusion process has certain viscosity, and the core wires are densely arranged, so that the plastic is difficult to enter a central area surrounded by the core wires through a gap between the two core wires, the finally formed cable is not compact enough in the central area, and the strength of the finally formed cable is not higher than that of the plastic on the outer layer of the core wire.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an extrusion moulding mould for insulated cable tied in a bundle, its simple structure, convenient to use can increase the closely knit degree of the central zone that the sinle silk encloses, improves the life of cable.

The embodiment of the utility model is realized like this:

an extrusion molding die for bunched insulated cables comprises a die body, wherein the die body comprises a feeding end and a discharging end which are opposite, a molding cavity is arranged in the die body, and the molding cavity comprises a first end face facing the feeding end and a second end face facing the discharging end; the die body is provided with at least three mutually parallel wire passing channels, the wire passing channels are arranged along the axial direction of the die body, one end of each wire passing channel extends to the feeding end, the other end of each wire passing channel extends to the first end surface and is communicated with the forming cavity, and the plurality of wire passing channels are arranged around the axial line of the die body; the mould body still is provided with supplementary feedstock channel, and supplementary feedstock channel includes feeding section and ejection of compact section, goes out the axial of material section along the mould body and runs through first terminal surface and die cavity intercommunication, and the one end and the feeding section intercommunication of die cavity are kept away from to ejection of compact section, and the feeding section is along the radial outer peripheral face that extends to the mould body of mould body and form supplementary feed port.

Further, in other preferred embodiments of the present invention, the diameter of the feeding section gradually increases along the direction away from the axis of the die body.

Further, in the other preferred embodiments of the present invention, the outer peripheral surface of the mold body is provided with a feeding chute, the feeding chute surrounds a circumference along the circumference of the mold body, and the auxiliary feeding hole is located at the bottom of the feeding chute.

Further, in other preferred embodiments of the present invention, the mold body further comprises a feeding channel, one end of the feeding channel runs through the end face of the feeding end, the other end runs through the first end face and communicates with the molding cavity, and the distance between the feeding channel and the axis of the mold body is greater than the distance between the feeding channel and the axis of the mold body.

Further, in other preferred embodiments of the present invention, the number of the feeding passages is plural, and the plural feeding passages are arranged along the circumferential direction of the die body at intervals.

Further, in other preferred embodiments of the present invention, the distance between the feeding channel and the axis of the mold body is gradually reduced as approaching the discharge end.

Further, in other preferred embodiments of the present invention, the diameter of the feed channel decreases as it approaches the discharge end.

Further, in the other preferred embodiments of the present invention, the discharge end is provided with a discharge port, the discharge port runs through the second end surface and communicates with the molding cavity, and the orthographic projection of the plurality of wire passing channels along the axis direction of the mold body is located the discharge port.

Further, in another preferred embodiment of the present invention, the forming cavity is integrally formed in a circular truncated cone shape, and the diameter of the forming cavity is gradually reduced along a direction close to the second end surface.

The embodiment of the utility model provides a beneficial effect is:

the embodiment of the utility model provides an extrusion moulding mould for insulating cable tied in a bundle, it includes the mould body, the mould body includes relative feed end and discharge end, the inside shaping chamber that is provided with of mould body, the mould body is provided with at least three wire passing channels that are parallel to each other, a plurality of wire passing channels encircle the axis setting of mould body; the mould body still is provided with supplementary feedstock channel, and supplementary feedstock channel includes feeding section and ejection of compact section, goes out the axial of material section along the mould body and runs through first terminal surface and die cavity intercommunication, and the one end and the feeding section intercommunication of die cavity are kept away from to ejection of compact section, and the feeding section is along the radial outer peripheral face that extends to the mould body of mould body and form supplementary feed port. This insulated cable tied in a bundle is with extrusion moulding mould's simple structure, convenient to use, it has increased supplementary feedstock channel between the wire passing channel, directly pours into plastics into between the heart yearn into to improve the closely knit nature of cable central zone, improved the life of cable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an extrusion molding die for a bunched insulated cable according to an embodiment of the present invention;

fig. 2 is a schematic view of a feed end of an extrusion molding die for a bunched insulated cable according to an embodiment of the present invention;

fig. 3 isbase:Sub>A sectional view of an extrusion molding die forbase:Sub>A bunched insulated cable onbase:Sub>A planebase:Sub>A-base:Sub>A according to an embodiment of the present invention;

fig. 4 is a sectional view of an extrusion molding die for a bunched insulated cable on a plane B-B according to an embodiment of the present invention;

fig. 5 is a sectional view of the extrusion molding die for bunched insulated cables in the plane of the axis of the feeding section according to the embodiment of the present invention.

An icon: 100-extrusion molding die for bunched insulated cables; 110-a mould body; 111-a feed end; 112-discharge end; 113-a molding cavity; 1131 — a first end face; 1132 — a second end face; 114-a wire-passing channel; 115-an auxiliary feed channel; 1151-a feed section; 1152-discharging section; 1153-an auxiliary feed port; 116-a feed chute; 117-a feed channel; 118-a discharge hole.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

The present embodiment provides an extrusion molding die 100 for bundled insulated cables, which is shown in fig. 1 and includes a die body 110, wherein the die body 110 includes a feeding end 111 and a discharging end 112 opposite to each other, a molding cavity 113 is disposed inside the die body 110, and the molding cavity 113 includes a first end surface 1131 facing the feeding end 111 and a second end surface 1132 facing the discharging end 112.

As shown in fig. 2 and 3, the die body 110 is provided with at least three mutually parallel wire passage channels 114, the wire passage channels 114 are arranged along the axial direction of the die body 110, one end of the wire passage channel 114 extends to the feeding end 111, the other end extends to the first end surface 1131 and is communicated with the forming cavity 113, and the plurality of wire passage channels 114 are arranged around the axial direction of the die body 110. Specifically, in the present embodiment, four wire passage channels 114 are provided, which can be used for one-step extrusion molding of a four-core cable. The four wire passing channels 114 are concentrated near the axis of the die body 110 and arranged around the axis of the die body 110, and the four wire cores are mixed with the melted plastic in the molding cavity 113 and then extruded out, so that the four-core cable is obtained.

As shown in fig. 2 and 4, the die body 110 is further provided with an auxiliary feeding channel 115, the auxiliary feeding channel 115 includes a feeding section 1151 and a discharging section 1152, the discharging section 1152 is communicated with the forming cavity 113 through the first end surface 1131 along the axial direction of the die body 110, one end of the discharging section 1152 far away from the forming cavity 113 is communicated with the feeding section 1151, and the feeding section 1151 extends to the outer circumferential surface of the die body 110 along the radial direction of the die body 110 and forms an auxiliary feeding hole 1153. The feeding section 1151 passes through the gap between the two wire passing channels 114, and the molten plastic can directly enter the central area surrounded by the plurality of wire cores through the auxiliary feeding channel 115, so that the compactness of the middle part of the multi-core cable is enhanced, and the service life of the multi-core cable is prolonged.

Further, referring to fig. 4 and 5, the diameter of the feed section 1151 becomes progressively larger in a direction away from the axis of the die body 110. The molten plastic is primarily mixed in the auxiliary feeding channel 115, so that the compactness of the molten plastic is increased, and the molding effect is improved. The outer peripheral surface of the die body 110 is provided with a feed chute 116, the feed chute 116 surrounds the die body 110 circumferentially, and the auxiliary feed holes 1153 are located at the bottom of the feed chute 116. Because the outer peripheral surface of the die body 110 is provided with the external threads for matching with the screw extruder, the auxiliary feeding hole 1153 is difficult to align with the discharging part on the screw extruder along with the screwing of the threads, and the design of the feeding groove 116 can avoid the above problems, no matter how the auxiliary feeding hole 1153 faces, the molten plastic can firstly enter the feeding groove 116 and then enter the auxiliary feeding hole 1153, and the normal work of the molten plastic is ensured.

As shown in fig. 3, the die body 110 is further provided with a feeding channel 117, one end of the feeding channel 117 penetrates through the end surface of the feeding end 111, the other end penetrates through the first end surface 1131 and is communicated with the forming cavity 113, and the distance between the feeding channel 117 and the axis of the die body 110 is greater than the distance between the wire passing channel 114 and the axis of the die body 110. The feed channel 117 is used to pour molten plastic into the forming cavity 113 to form the outer shield of the multi-core cable.

The number of the feed passage 117 is plural, and the plural feed passages 117 are provided at intervals along the circumferential direction of the die body 110. The molten plastic has certain viscosity, and cannot be rapidly distributed to all directions of the molding cavity 113 like water, and the uniformly distributed feeding channels 117 can increase the uniformity of feeding, so that the molten plastic in all directions in the molding cavity 113 is kept uniform, and the quality of the cable is improved.

The distance of the feed channel 117 from the axis of the die body 110 gradually decreases as it approaches the discharge end 112. The diameter of the feed channel 117 decreases as it approaches the discharge end 112. In the process that the molten plastic flows into the molding cavity 113, preliminary mixing can be performed, and the compactness between the molten plastics is increased, so that a better molding effect is achieved.

As shown in fig. 1 and 3, the discharge end 112 is provided with a discharge port 118, the discharge port 118 penetrates through the second end surface 1132 to be communicated with the forming cavity 113, and orthographic projections of the plurality of wire passing channels 114 along the axial direction of the mold body 110 are all located in the discharge port 118. The shape of the spout 118 may be configured according to the shape of the final cable, such as a circle, an oval, or even an irregular shape. The molding cavity 113 is generally frustoconical, and the diameter of the molding cavity 113 gradually decreases in a direction approaching the second end surface 1132. As it approaches the exit port 118, the molten plastic is further extruded and ultimately formed into the desired cable shape.

To sum up, the embodiment of the present invention provides an extrusion molding mold 100 for bunched insulated cables, which includes a mold body 110, wherein the mold body 110 includes a feeding end 111 and a discharging end 112, which are opposite to each other, a molding cavity 113 is disposed inside the mold body 110, the mold body 110 is provided with at least three wire passing channels 114, which are parallel to each other, and the plurality of wire passing channels 114 are disposed around the axis of the mold body 110; the die body 110 is further provided with an auxiliary feeding channel 115, the auxiliary feeding channel 115 comprises a feeding section 1151 and a discharging section 1152, the discharging section 1152 penetrates through the first end surface 1131 along the axial direction of the die body 110 to be communicated with the forming cavity 113, one end of the discharging section 1152 far away from the forming cavity 113 is communicated with the feeding section 1151, and the feeding section 1151 extends to the outer peripheral surface of the die body 110 along the radial direction of the die body 110 and forms an auxiliary feeding hole 1153. The extrusion molding die 100 for the bunched insulated cable is simple in structure and convenient to use, an auxiliary feeding channel 115 is additionally arranged between the wire passing channels 114, and plastic is directly injected between core wires, so that the compactness of the central area of the cable is improved, and the service life of the cable is prolonged.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The extrusion molding die for the bunched insulated cables is characterized by comprising a die body, wherein the die body comprises a feeding end and a discharging end which are opposite, a molding cavity is arranged in the die body, and the molding cavity comprises a first end face facing the feeding end and a second end face facing the discharging end; the die body is provided with at least three mutually parallel wire passing channels, the wire passing channels are arranged along the axial direction of the die body, one end of each wire passing channel extends to the feeding end, the other end of each wire passing channel extends to the first end surface and is communicated with the forming cavity, and the plurality of wire passing channels are arranged around the axial line of the die body; the mould body still is provided with supplementary feedstock channel, supplementary feedstock channel includes feeding section and ejection of compact section, the ejection of compact section is followed the axial of mould body runs through first terminal surface with become the die cavity intercommunication, the ejection of compact section is kept away from become the one end in die cavity with feeding section intercommunication, the feeding section is followed the radial extension of mould body reaches the outer peripheral face of mould body forms the auxiliary feed hole.

2. The extrusion molding die for bundled insulated cables as claimed in claim 1, wherein the diameter of the feed section is gradually increased in a direction away from the axis of the die body.

3. The extrusion molding die for bundled insulated cables as claimed in claim 2, wherein the die body is provided with a feed chute on the outer peripheral surface thereof, the feed chute surrounds the die body circumferentially around the feed chute, and the auxiliary feed hole is located at the bottom of the feed chute.

4. The extrusion molding die for the bundled insulated cables as claimed in claim 1, wherein the die body is further provided with a feeding channel, one end of the feeding channel penetrates through the end face of the feeding end, the other end of the feeding channel penetrates through the first end face and is communicated with the molding cavity, and the distance between the feeding channel and the axis of the die body is greater than the distance between the wire passing channel and the axis of the die body.

5. The extrusion molding die for bundled insulated cables as claimed in claim 4, wherein the number of the feed channels is plural, and the plural feed channels are arranged at intervals in the circumferential direction of the die body.

6. The extrusion molding die for bundled insulated cables as claimed in claim 5, wherein the distance between the feed channel and the axis of the die body is gradually reduced as approaching the discharge end.

7. The extrusion molding die for bundled insulated cables as claimed in claim 6, wherein the diameter of the feed channel is gradually reduced as approaching the discharge end.

8. The extrusion molding die for the bundled insulated cables as claimed in claim 7, wherein a discharge port is arranged at the discharge end, the discharge port penetrates through the second end face to be communicated with the molding cavity, and orthographic projections of the plurality of wire passing channels along the axial direction of the die body are all located in the discharge port.

9. The extrusion molding die for bundled insulated cables as claimed in claim 8, wherein the molding cavity is formed in a circular truncated cone shape as a whole, and a diameter of the molding cavity is gradually reduced in a direction approaching the second end face.

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