Three-strip injection device for cable extrusion

Abstract

The utility model discloses a three-injection-strip device for cable extrusion, which belongs to the technical field of cable processing, and is characterized in that the three-injection-strip device comprises a plastic extruding machine head flange connecting body, and three injection strips are formed on the surface of a cable after an insulating material is extruded through an injection strip connecting rod, an injection strip color separation ring seat, a three-injection-strip diverter, a mold core and a mold sleeve, the injection strip connecting rod is connected with the outer upper surface of the injection strip color separation ring seat body through threaded holes, the injection strip color separation ring seat and the three-injection strip diverter are connected through bolts and are positioned through positioning pins, and the three-injection strip diverter and the mold sleeve are locked through locking nuts. A material flow of a cross-linked polyethylene insulating material plasticized by an auxiliary machine enters a main flow groove of the three-injection-strip diverter through an injection flow channel of the injection strip connecting rod and an insulating material inlet of the injection strip color separation ring seat, and then is extruded through the mold core and the mold sleeve, so that a sizing material of the three-injection strip is fused on the insulating outer surface of the cable at an angle of 120 degrees and in uniform size.

Description

Technical Field

[0001] The utility model relates to the technical field of cable processing, in particular to a three-injection strip device for cable extrusion. Background Art

[0002] In the cable industry, one of the insulating materials for low-voltage cables is cross-linked polyethylene, which is extruded onto the conductor to form an insulating layer. Its main body is transparent and has no color. In order to identify the phase sequence of the cable, color-coded wire identification or insulation color identification is conventionally used, that is, adding a color-coded wire between the conductor and the cross-linked polyethylene insulation layer, or mixing a masterbatch into the cross-linked polyethylene insulation material for extrusion.

[0003] The existing cable insulation core uses a color code line identification method, which has low recognition and is inconvenient to install and use, making it difficult for most users to accept. The existing insulation color identification method, although highly recognizable, requires changing the color during extrusion, resulting in large material waste and time-consuming and labor-intensive, increasing the cost of cable manufacturers. Utility Model Content

[0004] The utility model provides a three-injection strip device for cable extrusion, aiming to solve the problem that when the existing cable insulation core uses color-coded wires to identify the phase sequence, the recognition degree is not high, the installation and use are very inconvenient, and most users find it difficult to accept. The existing insulation color identification method has a high recognition degree, but because the color needs to be changed during extrusion, the material waste is large and it is time-consuming and labor-intensive, which increases the cost of the cable manufacturer.

[0005] The utility model is implemented as follows: a three-injection strip device for cable extrusion comprises an extruder head flange connector, the front side of the extruder head flange connector is fixedly connected with the extruder head casing, an injection strip deviation adjustment fixing ring is installed on the right side of the extruder head casing, an injection strip deviation adjustment fixing ring is movably connected with an injection strip color separation ring seat on the inner side of the injection strip color separation ring seat, an injection strip connecting rod is installed on the inner side of the injection strip color separation ring seat, a three-injection strip flow divider is installed on the inner side of the injection strip flow divider, a locking nut is installed on the inner side of the three-injection strip flow divider, a mold core is installed on the inner side of the extruder head casing, and a mold sleeve is installed on the right side of the outer side of the mold core;

[0006] A main flow groove is provided on the outer side of the three-injection-bar diverter, an annular flow groove is provided on the outer side of the three-injection-bar diverter, a short flow groove is provided on the outer side of the three-injection-bar diverter, the main flow groove is connected with the annular flow groove and the short flow groove, a lower drainage groove is provided on the outer side of the three-injection-bar diverter, an upper drainage groove is provided on the outer side of the three-injection-bar diverter, a lower insulating material outlet and upper left and right insulating material outlets are provided on the left side of the three-injection-bar diverter, the annular flow groove is connected with the lower drainage groove and the lower insulating material outlet, and the short flow groove is connected with the upper drainage groove and the upper insulating material outlet.

[0007] In order to facilitate the positioning of the installation of the structure, as a preferred three-injection strip device for cable extrusion of the utility model, a positioning pin is installed on the outer side of the injection strip color separation ring seat, and the outer side of the positioning pin is plugged into the three-injection strip diverter.

[0008] In order to facilitate the deviation adjustment of the insulating material, as a preferred three-injection strip device for cable extrusion of the utility model, the inner side of the injection strip deviation adjustment fixing ring is threadedly connected with an injection strip deviation adjustment bolt.

[0009] In order to achieve the effect of facilitating flow diversion, as a preferred embodiment of the three-injection strip device for cable extrusion of the utility model, a main flow diverter with a taper of the extruder head is arranged on the outer side of the mold core.

[0010] In order to facilitate the adjustment of the conduit, as a preferred embodiment of the three-injection strip device for cable extrusion of the utility model, an adjustment wire ring is arranged on the left side of the taper main diverter of the extruder head.

[0011] In order to facilitate the adjustment of the conduit, as a preferred embodiment of the three-injection strip device for cable extrusion of the utility model, an adjusting bolt is installed on the inner side of the adjusting wire ring.

[0012] In order to facilitate the extrusion action in cooperation with the mold core, as a preferred embodiment of the three-injection strip device for cable extrusion of the utility model, a conduit is provided on the inner side of the taper main diverter of the extruder head.

[0013] In order to facilitate the tightening of the core tube, as a preferred three-injection strip device for cable extrusion of the utility model, the inner side of the adjusting wire ring is threadedly connected with a tightening bolt.

[0014] In order to facilitate the connection of the structure, as a preferred embodiment of the three-injection strip device for cable extrusion of the utility model, the injection flow groove on the inner side of the injection strip connecting rod is arranged directly above the main flow groove.

[0015] In order to achieve a more reasonable flow diversion effect of the structure, as a preferred embodiment of the three-injection strip device for cable extrusion of the utility model, the width, depth and length of the upper drainage groove and the lower drainage groove are equal.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The three-injection strip device for cable extrusion is used to form three-injection strips on the surface of the cable after the insulating material is extruded through an injection strip connecting rod, an injection strip color separation ring seat, a three-injection strip diverter, a mold core, and a mold sleeve, wherein the injection strip connecting rod and the outer upper surface of the injection strip color separation ring seat body are provided with threaded holes for connection, the injection strip color separation ring seat and the three-injection strip diverter are threadedly connected, and the three-injection strip diverter and the mold sleeve are locked with a locking nut. When the three-injection strip is extruded, the cross-linked polyethylene insulating material plasticized by the auxiliary machine on the main extruder head passes through the injection flow channel of the injection strip connecting rod, the injection strip color separation ring seat insulating material inlet, and the main flow groove of the three-injection strip diverter, and then flows into the annular diverter groove and the short diverter groove at the same time, wherein the insulating materials in the two grooves of the annular diverter groove are respectively in the three-injection strip diverter groove. The two ends of the three-injection strip diverter meet at the bottom of the device, enter the lower drainage groove, and then go to the lower insulation material outlet, and the short diverter groove is divided into two diverter grooves, among which the short diverter groove enters the upper left and right drainage grooves to the upper left and right insulation material outlets. The upper left and right insulation material outlets and the lower insulation material outlet are symmetrically and evenly distributed on the end face of the three-injection strip diverter at an angle of 120 degrees in the same plane. After the insulation material flows out of them, it is extruded through the mold core and the mold sleeve, so that the rubber material of the three-injection strip is 120 degrees and uniformly fused on the outer surface of the cable insulation. Three injection strip marks can be extruded on the insulation surface at one time. The injection strips are symmetrically and evenly distributed on the surface of the insulation core at an angle of 120 degrees. The injection strip marks can be easily seen from all angles, and have the advantages of being clear, conspicuous, easy to identify, and convenient and quick to change colors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural diagram of the three-injection strip device for cable extrusion of the utility model;

[0019] Figure 2 It is a front cross-sectional view of the main structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the interior of the main structure of the utility model;

[0021] Figure 4 This is a structural schematic diagram of the mold core of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the mold core and the conduit of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the three-injection strip flow divider of the utility model;

[0024] Figure 7 This is a schematic diagram of the location of the lower drainage trough of the utility model;

[0025] Figure 8 It is the front view of the main structure of the utility model.

[0026] In the figure, 1, extruder head flange connector; 2, extruder head housing; 3, injection strip deviation adjustment fixing ring; 4, injection strip color separation ring seat; 5, injection strip connecting rod; 6, three-injection strip diverter; 601, main flow slot; 6021, annular diverter slot; 6031, upper left short diverter slot; 6032, upper right short diverter slot; 6041, upper left drainage slot; 6042, upper right drainage slot; 6043, lower drainage slot; 6051, upper left insulating material outlet; 6052, upper right insulating material outlet; 6053, lower insulating material outlet; 7, locking nut; 8, mold core; 9, mold sleeve; 10, positioning pin; 11, injection strip deviation adjustment bolt; 12, extruder head taper main diverter; 13, adjusting wire ring; 14, adjusting bolt; 15, guide tube; 16, fastening bolt. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "directly above", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0029] See also Figure 1-8 The utility model provides a technical solution: a three-injection strip device for cable extrusion, comprising an extruder head flange connector 1, the front side of the extruder head flange connector 1 is fixedly connected to the extruder head casing 2, an injection strip adjustment fixing ring 3 is installed on the right side of the extruder head casing 2, an injection strip adjustment fixing ring 3 is movably connected to the inner side of the injection strip color separation ring seat 4, an injection strip connecting rod 5 is installed on the inner side of the injection strip color separation ring seat 4, a three-injection strip diverter 6 is installed on the inner side of the injection strip diverter 6, a locking nut 7 is installed on the inner side of the three-injection strip diverter 6, a conduit 15 is installed on the inner side of the extruder head casing 2, a mold core 8 is installed on the right side of the conduit 15, and a mold sleeve 9 is installed on the right side of the outer side of the mold core 8;

[0030] A main flow groove 601 is provided on the outside of the three-injection bar splitter 6, an annular flow groove 6021 is provided on the outside of the three-injection bar splitter 6, an upper left short flow groove 6031 and an upper right short flow groove 6032 are provided on the outside of the three-injection bar splitter 6, the main flow groove 601 is connected with the annular flow groove 6021, the upper left short flow groove 6031 and the upper right short flow groove 6032, a lower drainage groove 6043 is provided on the outside of the three-injection bar splitter 6, and an upper left drainage groove 6043 is provided on the inside of the three-injection bar splitter 6. 41 and the upper right drainage groove 6042, the inner end surface of the three-injection strip diverter 6 is provided with a lower insulating material outlet 6053, an upper left insulating material outlet 6051 and an upper right insulating material outlet 6052, the annular diverter groove 6021 is connected with the lower drainage groove 6043 and the lower insulating material outlet 6053, the upper left short diverter groove 6031 is connected with the upper left drainage groove 6041 and the upper left insulating material outlet 6051, and the upper right short diverter groove 6032 is connected with the upper right drainage groove 6042 and the upper right insulating material outlet 6052.

[0031] In this embodiment: through the injection strip connecting rod 5, the injection strip color separation ring seat 4 and the three-injection strip diverter 6, the mold core 8, and the mold sleeve 9, the insulating material forms three injection strips on the cable surface after extrusion, wherein the injection strip connecting rod 5 and the outer upper surface of the injection strip color separation ring seat 4 are provided with threaded holes for connection, the injection strip color separation ring seat 4 and the three-injection strip diverter 6 are threadedly connected, and the three-injection strip diverter 6 and the mold sleeve 9 are locked with the mold sleeve 9 locking nut 7. When the three-injection strip is extruded, the material flow of the cross-linked polyethylene insulating material plasticized by the auxiliary machine passes through the injection flow channel of the injection strip connecting rod 5, the injection strip color separation ring seat 4 insulation material inlet, and enters the main flow groove 601 of the three-injection strip diverter 6, and then flows into the annular diverter groove 6021, the upper left short diverter groove 6031 and the upper right short diverter groove 6032 at the same time, wherein the two grooves of the annular diverter groove 6021 The insulating materials meet at the bottom of the three-injection strip diverter 6 respectively and enter the lower guide The flow trough 6043, and then to the lower insulating material outlet 6053; the upper left short-shaped shunt trough 6031 enters the upper left drainage trough 6041 to the upper left insulating material outlet 6051; the upper right short-shaped shunt trough 6032 enters the upper right drainage trough 6042 to the upper right insulating material outlet 6052; the upper left insulating material outlet 6051, the upper right insulating material outlet 6052 and the lower insulating material outlet 6053 are symmetrically and evenly distributed on the end face of the three-injection strip diverter 6 at an angle of 120 degrees in the same plane. After the insulating material flows out of them, it is extruded by the mold core 8 and the mold sleeve 9, so that the rubber material of the three-injection strip is 120 degrees and uniformly fused on the outer surface of the cable insulation. Three injection strip marks can be extruded on the insulating surface at one time. The injection strips are symmetrically and evenly distributed on the surface of the insulating core at an angle of 120 degrees. The injection strip marks can be easily seen from all angles, and have the advantages of being clear, conspicuous, easy to identify, and convenient and fast in color change.

[0032] As a technical optimization solution of the utility model, a positioning pin 10 is installed on the outer side of the injection strip color separation ring seat 4, and the outer side of the positioning pin 10 is plugged with the three-injection strip diverter 6.

[0033] In this embodiment: in order to facilitate the installation and positioning of the three-injection strip diverter 6 and the injection strip color separation ring seat 4.

[0034] As a technical optimization solution of the utility model, the inner side of the injection strip deviation adjustment fixing ring 3 is threadedly connected with an injection strip deviation adjustment bolt 11 .

[0035] In this embodiment, the injection strip deviation adjustment bolt 11 is provided to facilitate the purpose of adjusting the deviation of the injection strip.

[0036] As a technical optimization solution of the utility model, an extruder head taper main diverter 12 is arranged on the outer side of the mold core 8 .

[0037] In this embodiment: a taper main flow divider 12 of the extruder head is provided to cooperate with the mold core 8 to perform extrusion.

[0038] As a technical optimization solution of the utility model, an adjusting wire ring 13 is arranged on the left side of the taper main flow divider 12 of the extruder head.

[0039] In this embodiment, by providing the adjusting wire ring 13 , the mold core 8 and the conduit 15 can be easily adjusted.

[0040] As a technical optimization solution of the present invention, an adjusting bolt 14 is installed inside the adjusting wire ring 13 .

[0041] In this embodiment, by providing the adjusting bolt 14, the taper main diverter 12 of the extruder head can be adjusted conveniently.

[0042] As a technical optimization solution of the utility model, a conduit 15 is provided inside the taper main flow divider 12 of the extruder head.

[0043] In this embodiment: by providing the conduit 15, it is possible to facilitate the cooperation with the extruder head taper main diverter 12 to perform basic actions.

[0044] As a technical optimization solution of the present utility model, the inner side of the adjusting wire ring 13 is threadedly connected with a fastening bolt 16 .

[0045] In this embodiment, by providing the fastening bolts 16, the structure can be fastened and connected conveniently.

[0046] As a technical optimization solution of the present invention, the injection flow groove inside the injection bar connecting rod 5 is arranged directly above the main flow groove 601 .

[0047] In this embodiment, the structure can be easily connected by arranging the injection groove of the injection bar connecting rod 5 just above the main flow groove 601.

[0048] As a technical optimization solution of the present invention, the width, depth and length of the upper drainage groove 6041 and the lower drainage groove 6043 are equal.

[0049] In this embodiment, by setting the sizes of the structures to be equal, the extrusion can be made more stable during the production operation.

[0050] Working principle: First, when in use, the device is connected to the extrusion equipment, and the cross-linked polyethylene insulation material flow plasticized by the auxiliary machine passes through the injection channel of the injection bar connecting rod 5, the injection bar color separation ring seat 4, the main flow groove 601 of the three-injection bar diverter 6 of the insulation material inlet, and then flows into the annular diverter groove 6021, the upper left short diverter groove 6031 and the upper right short diverter groove 6032 at the same time, wherein the insulation materials in the two grooves of the annular diverter groove 6021 meet at the bottom of the three-injection bar diverter 6, enter the lower drainage groove 6043, and then flow into the lower insulation material outlet 6053; the upper left short diverter groove 6031 and the upper right short diverter groove 6032 respectively. The shaped diverter groove 6031 enters the upper left drainage groove 6041 to the upper left insulating material outlet 6051; the upper right short diverter groove 6032 enters the upper right drainage groove 6042 to the upper right insulating material outlet 6052; the upper left insulating material outlet 6051, the upper right insulating material outlet 6052 and the lower insulating material outlet 6053 are symmetrically and evenly distributed on the end face of the three-injection strip diverter 6 at an angle of 120 degrees in the same plane. After the insulating material flows out of them, it is extruded by the mold core 8 and the mold sleeve 9, so that the rubber material of the three-injection strip is fused to the outer surface of the cable insulation at 120 degrees and in uniform size.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-shot device for cable extrusion, comprising an extruder head flange connector (1), characterized in that: The front side of the extruder head flange connector (1) is fixedly connected to the extruder head casing (2), the right side of the extruder head casing (2) is equipped with an injection strip adjustment fixing ring (3), the inner side of the injection strip adjustment fixing ring (3) is movably connected to the injection strip color separation ring seat (4), the upper side of the injection strip color separation ring seat (4) is equipped with an injection strip connecting rod (5), the front end of the injection strip color separation ring seat (4) is equipped with a three-injection strip flow divider (6), the inner side of the three-injection strip flow divider (6) is equipped with a locking nut (7), the inner side of the extruder head casing (2) is equipped with a main flow divider (12), the inner side of the main flow divider (12) is equipped with a conduit (15), the conduit (15) is connected to the mold core (8) by threads, and the outer side of the mold core (8) is equipped with a mold sleeve (9); The outer side of the three-injection bar splitter (6) is provided with a main flow groove (601), the outer side of the three-injection bar splitter (6) is provided with an annular flow groove (6021), the outer side of the three-injection bar splitter (6) is provided with an upper left short flow groove (6031) and an upper right short flow groove (6032), the main flow groove (601) is connected with the annular flow groove (6021), the upper left short flow groove (6031), and the upper right short flow groove (6032), the outer side of the three-injection bar splitter (6) is provided with a lower drainage groove (6043), and the inner side of the three-injection bar splitter (6) is provided with an upper left drainage groove ( The inner end surface of the three-injection strip diverter (6) is provided with a lower insulating material outlet (6053), an upper left insulating material outlet (6051) and an upper right insulating material outlet (6052); the annular diverter groove (6021) is connected with the lower diverter groove (6043) and the lower insulating material outlet (6053); the upper left short diverter groove (6031) is connected with the upper left diverter groove (6041) and the upper left insulating material outlet (6051); the upper right short diverter groove (6032) is connected with the upper right diverter groove (6042) and the upper right insulating material outlet (6052).

2. A three-injection strip device for cable extrusion according to claim 1, characterized in that: A positioning pin (10) is installed on the outer side of the injection strip color separation ring seat (4), and the outer side of the positioning pin (10) is plugged into the three-injection strip diverter (6).

3. A three-injection strip device for cable extrusion according to claim 1, characterized in that: The inner side of the injection strip deviation adjustment fixing ring (3) is threadedly connected with an injection strip deviation adjustment bolt (11).

4. A three-injection strip device for cable extrusion according to claim 1, characterized in that: An extruder head taper main flow divider (12) is arranged on the outer side of the mold core (8).

5. A three-injection strip device for cable extrusion according to claim 4, characterized in that: An adjusting wire ring (13) is arranged on the left side of the extruder head taper main flow divider (12).

6. A three-injection strip device for cable extrusion according to claim 5, characterized in that: An adjusting bolt (14) is installed inside the adjusting wire ring (13).

7. A three-injection strip device for cable extrusion according to claim 4, characterized in that: A conduit (15) is arranged on the inner side of the extruder head taper main flow divider (12).

8. A three-injection strip device for cable extrusion according to claim 5, characterized in that: The inner side of the adjusting wire ring (13) is threadedly connected with a fastening bolt (16).

9. A three-injection strip device for cable extrusion according to claim 1, characterized in that: The injection flow groove on the inner side of the injection bar connecting rod (5) is arranged directly above the main flow groove (601).

10. A three-injection strip device for cable extrusion according to claim 1, characterized in that: The upper left drainage groove (6041), the upper right drainage groove (6042) and the lower drainage groove (6043) are equal in width, depth and length.

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