CN211441093U - Cable extrusion molding device - Google Patents

Abstract

The utility model relates to a cable extrusion molding device, which is provided with a three-way extrusion die head, a molding die head and a guide die core assembled in the three-way extrusion die head, wherein the molding die head is assembled at the extrusion end of the three-way extrusion die head; a feed inlet is arranged on the outer side of the feed end of the guide die core and is in butt joint with a raw material input port of the three-way extrusion die head; the outer peripheral surface of the guide mold core is provided with a first guide chute and a second guide chute which are communicated with the feed inlet, the tail ends of the first guide chute and the second guide chute are converged at the outer periphery of the discharge end, and the feed inlet is provided with a diversion rib; the first guide chute is internally provided with a first diversion island, and the second guide chute is internally provided with a second diversion island, so that the extruded raw materials in the first guide chute and the second guide chute are shunted again through the first diversion island and the second diversion island, and a plurality of strands of fluid are extruded and wrapped around the lead, the cable precursor or the stranded wire to form the cable. Simple structure, reasonable, long service life is fit for various cable extrusion forming, promotes extrusion forming quality and efficiency.

Description

Cable extrusion molding device

Technical Field

The utility model belongs to the technical field of cable preparation equipment technique and specifically relates to a cable extrusion moulding device is related to.

Background

Cable extrusion is the continuous extrusion of molten coating material, usually under pressure and/or increased temperature, through a cable extrusion device, around a conductor, cable precursor or strand to form a continuous insulation or jacket layer, which is then cooled and solidified to form a wire and cable product. The existing cable extrusion molding device mainly utilizes the flowing extrusion of the external coating material which is melted by the matching of the annular clearance between the extrusion die head and the guide die core, the flowing pressure of the external coating material is deviated in a single flow passage form adopted by the structure, the thickness of the extrusion molding is influenced, the uniformity of the annular clearance between the extrusion die head and the guide die core relative to a central line is high, the installation and the positioning are accurate, the manufacturing and assembling cost is increased, the annular clearance is unstable due to the easy looseness in the work, and the quality of the extrusion molding is influenced.

Disclosure of Invention

An object of the utility model is to provide a cable extrusion moulding device has fine solution above-mentioned prior art problem, convenient preparation and equipment, and promotes extrusion moulding quality and efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the cable extrusion molding device is provided with a three-way extrusion die head, a molding die head and a guide die core assembled in the three-way extrusion die head, wherein the molding die head is assembled at the extrusion end of the three-way extrusion die head; the guide die core is provided with a feed end, a discharge end and a middle hole penetrating through the feed end and the discharge end, the outer side of the feed end of the guide die core is provided with a feed port, and the feed port is in butt joint with a raw material input port of the three-way extrusion die head; the outer peripheral surface of the guide mold core is provided with a first guide chute and a second guide chute which are communicated with the feed inlet, the tail ends of the first guide chute and the second guide chute are converged at the outer periphery of the discharge end, and the feed inlet is provided with a diversion rib; the first guide chute is internally provided with a first shunting island, and the second guide chute is internally provided with a second shunting island, so that extruded raw materials in the first guide chute and the second guide chute are shunted again through the first shunting island and the second shunting island, and a plurality of strands of fluid are extruded and wrapped around a lead, a cable precursor or a stranded wire to form a cable.

In the above solution, the first current-dividing island and the second current-dividing island are in a diamond shape.

In the above solution, the heights of the first and second diversion islands in the axial direction of the guide mold core are the same, and the first and second diversion islands are respectively located at the middle parts of the first and second material guide chutes.

In the above scheme, the ends of the first and second flow-dividing islands and the ends of the first and second material guide chutes are aligned with each other in the axial direction of the guiding mold core.

According to the scheme, a buffering ring platform is arranged at the joint of the discharge end of the guide mold core and the first guide chute and the second guide chute, and a conical column is arranged on one side of the buffering ring platform, which is far away from the first guide chute and the second guide chute.

The utility model utilizes the outer peripheral surface of the guide mold core to be provided with a first guide chute and a second guide chute which are communicated with the feed inlet, the ends of the first guide chute and the second guide chute are converged at the periphery of the discharge end, and the feed inlet is provided with a shunting rib; the first guide chute is internally provided with a first shunting island, and the second guide chute is internally provided with a second shunting island, so that extruded raw materials in the first guide chute and the second guide chute are shunted again through the first shunting island and the second shunting island, and a plurality of strands of fluid are extruded and wrapped around a lead, a cable precursor or a stranded wire to form a cable. Thereby, the following beneficial effects are achieved:

1. the peripheral surface of the guide mold core is in sufficient supporting contact with the three-way extrusion mold head, so that the relative position between the guide mold core and the three-way extrusion mold head is stable, the processing and the assembly are simplified, and the manufacturing cost is reduced.

2. The multi-strand fluid shunting extrusion coating is realized, the flow is balanced, the pressure is uniform, the outer coating coated around the lead, the cable precursor or the stranded wire is uniform in radial direction relative to the central line, the thickness of the outer coating of the cable is uniform, and the surface of the cable is smooth and compact.

3. Simple structure, reasonable, long service life is fit for various cable extrusion forming, promotes extrusion forming quality and efficiency.

Description of the drawings:

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a guiding mold core of the embodiment of FIG. 1;

fig. 3 is a schematic view of a structure of a guide mold core of the embodiment of fig. 1 from two viewing angles.

The specific implementation mode is as follows:

the conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, 2 and 3, which are drawings illustrating a preferred embodiment of the present invention, the present invention relates to a cable extrusion molding apparatus, which comprises a three-way extrusion die head 1, a molding die head 3 and a guide die core 2 assembled in the three-way extrusion die head 1, wherein the molding die head 3 is assembled at the extrusion end of the three-way extrusion die head 1, and is used for compressing and shaping to tightly wrap the outer covering material of the cable around the wire, the cable precursor or the stranded wire, thereby obtaining the cable with the corresponding specification. The periphery of the three-way extrusion die head 1 is coated with the heating element 4, real-time heating is provided, the temperature of the three-way extrusion die head 1 is ensured, and the fluidity of a melted coating material is ensured, so that extrusion molding is facilitated. The guide mold core 2 is provided with a feed end 21, a discharge end 22 and a middle hole 23 penetrating through the feed end 21 and the discharge end 22, the middle hole 23 meets the requirement of feeding a lead, a cable precursor or a stranded wire in a penetrating way, a flange and a feed port are arranged on the outer side of the feed end 21 of the guide mold core 2, the guide mold core 2 is embedded into the tee extrusion mold head 1 and abuts against the corresponding end of the tee extrusion mold head 1 through the flange, and then the guide mold core 2 is locked by bolts to finish the assembly. The feed inlet is in butt joint with a raw material input port 11 of the three-way extrusion die head 1, so that the input of the melted coating material is realized. The first material guide groove 24 and the second material guide groove 25 which are communicated with the feeding hole are formed in the peripheral face of the guide mold core 2, the first material guide groove 24 and the second material guide groove 25 are obtained through the concave design of the peripheral face of the guide mold core 2, the requirement that molten outer covering materials flow and are extruded is met, the peripheral face of the guide mold core is increased to be in sufficient supporting contact with the three-way extrusion mold head, the relative position between the guide mold core and the three-way extrusion mold head is stable, machining and assembling are simplified, and manufacturing cost is reduced. The first and second chutes 24 and 25 in this embodiment are designed in a symmetrical shape, and the ends of the first and second chutes 24 and 25 are combined with the outer periphery of the discharge end 22 so as to surround and wrap around the wires, cable precursors or strands. The feeding port is provided with a diversion rib 26 for diverting the melted outer cover material input from the feeding port, the melted outer cover material is effectively guided to enter the first guide chute 24 and the second guide chute 25, the widths of the first guide chute 24 and the second guide chute 25 are gradually increased from the feeding port to the tail end, so that the melted outer cover material is gradually homogenized, and the extrusion working condition with proper flow, flow rate and pressure is obtained. In this embodiment, the first material guiding chute 24 is provided with the first current splitting island 27, and the second material guiding chute 25 is provided with the second current splitting island 28, so that the extrusion raw materials in the first material guiding chute 24 and the second material guiding chute 25 are split again by the first current splitting island 27 and the second current splitting island 28, so that a plurality of strands of fluids are extruded and wrapped around a conducting wire, a cable precursor or a stranded wire, the wrapped outer quilt is divided into a plurality of lobes, the number of the divided lobes is increased, the uniformity of the wrapped outer quilt is improved, the wrapping efficiency and uniformity are improved, and the improvement of the surface compactness and smoothness of the cable is facilitated.

Referring to fig. 1, 2 and 3, in the present embodiment, the first current-dividing island 27 and the second current-dividing island 28 have a diamond shape, which has better symmetry and balanced current-dividing pressure. The first and second flow-dividing islands 27 and 28 have the same height in the axial direction of the guide core 2, and the first and second flow-dividing islands 27 and 28 are respectively located at the midsections of the first and second material guide chutes 24 and 25. And the ends of the first and second flow-dividing islands 27 and 28 are flush with the ends of the first and second material guide chutes 24 and 25 in the axial direction of the guide core 2. The operation of surrounding and wrapping is effectively ensured while the multiple times of homogenization and shunt are realized, and the occurrence of line marks on the surface of the cable is avoided. Further, a buffering ring platform 221 is arranged at a connection position of the discharge end 22 of the guiding mold core 2 and the first and second material guiding chutes 24 and 25, and a conical column 222 is arranged on one side of the buffering ring platform 221 departing from the first and second material guiding chutes 24 and 25. The cushion ring table 221 increases the consistency of wrapping, so that the material at the extrusion molding position is full and full, and the uniform and compact outer cover is obtained. The conical column 222 serves to guide the melted coating material to be extruded and wrapped towards the center of the conductor, cable precursor or stranded wire, so that the wrapping is tighter and firmer, and the cable quality is improved.

The utility model utilizes the outer peripheral surface of the guide mold core to be provided with a first guide chute and a second guide chute which are communicated with the feed inlet, the ends of the first guide chute and the second guide chute are converged at the periphery of the discharge end, and the feed inlet is provided with a shunting rib; the first guide chute is internally provided with a first shunting island, and the second guide chute is internally provided with a second shunting island, so that extruded raw materials in the first guide chute and the second guide chute are shunted again through the first shunting island and the second shunting island, and a plurality of strands of fluid are extruded and wrapped around a lead, a cable precursor or a stranded wire to form a cable. During assembly, the peripheral surface of the guide mold core is in sufficient supporting contact with the three-way extrusion mold head, so that the relative position between the guide mold core and the three-way extrusion mold head is stable, the processing and the assembly are simplified, and the manufacturing cost is reduced. When the device works, a plurality of strands of fluid are shunted, extruded and wrapped, the flow is balanced, the pressure is uniform, the outer cover wrapped around the lead, the cable precursor or the stranded wire is uniform in radial direction relative to the central line, the thickness of the outer cover of the cable is uniform, and the surface of the cable is smooth and compact. The cable extrusion molding device has the advantages of simple and reasonable integral structure and long service life, is suitable for extrusion molding of various cables, and is beneficial to improving the quality of the cables.

Although the preferred embodiments of the present invention have been described in connection with the accompanying drawings, the present invention should not be limited to the exact construction and operation as described and illustrated, and many equivalent modifications and variations of the above-described embodiments may be made by logical analysis, reasoning or limited experimentation by those skilled in the art without departing from the spirit and scope of the present invention, which should fall within the scope of the claims.

Claims (5)

1. Cable extrusion moulding device, its characterized in that: the three-way extrusion die head is provided with a three-way extrusion die head (1), a forming die head (3) and a guide die core (2) assembled in the three-way extrusion die head (1), wherein the forming die head (3) is assembled at the extrusion end of the three-way extrusion die head (1); the guide mold core (2) is provided with a feed end (21), a discharge end (22) and a middle hole (23) penetrating through the feed end (21) and the discharge end (22), a feed inlet is formed in the outer side of the feed end (21) of the guide mold core (2), and the feed inlet is in butt joint with a raw material input through hole (11) of the three-way extrusion mold head (1); a first guide chute (24) and a second guide chute (25) which are communicated with the feeding hole are arranged on the outer peripheral surface of the guide mold core (2), the tail ends of the first guide chute (24) and the second guide chute (25) are converged on the periphery of the discharging end (22), and a diversion rib (26) is arranged at the feeding hole; the first material guide groove (24) is provided with a first diversion island (27), the second material guide groove (25) is provided with a second diversion island (28), so that the extruded raw materials in the first material guide groove (24) and the second material guide groove (25) are diverted again through the first diversion island (27) and the second diversion island (28), and a plurality of strands of fluid are extruded and wrapped around the wires, the cable precursors or the stranded wires to form the cable.

2. The cable extrusion molding apparatus as set forth in claim 1, wherein: the first and second current-dividing islands (27, 28) are diamond-shaped.

3. The cable extrusion molding apparatus according to claim 1 or 2, wherein: the heights of the first flow dividing island (27) and the second flow dividing island (28) in the axial direction of the guide mold core (2) are consistent, and the first flow dividing island (27) and the second flow dividing island (28) are respectively positioned at the middles of the first material guide groove (24) and the second material guide groove (25).

4. The cable extrusion molding apparatus of claim 3, wherein: the ends of the first flow dividing island (27) and the second flow dividing island (28) are flush with the ends of the first guide chute (24) and the second guide chute (25) in the axial direction of the guide mold core (2).

5. The cable extrusion molding apparatus as set forth in claim 1, wherein: the connection part of the discharge end (22) of the guide mold core (2) and the first guide chute (24) and the second guide chute (25) is provided with a buffer ring platform (221), and one side of the buffer ring platform (221), which deviates from the first guide chute (24) and the second guide chute (25), is a conical column (222).

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