Cable extrusion die

Abstract

The utility model belongs to the technical field of cable extrusion dies, and particularly relates to a cable extrusion die which comprises a die, a die core and a cable extruder, the die comprises a forming pipe, a circular truncated cone section and a cylindrical section which are sequentially arranged from left to right, the die core is coaxially arranged on the outer side of the die and is in threaded connection with the die, and the left side of a wire guide hole is fixedly connected with a wire guide pipe. According to the device, a cable protection sleeve material can be uniformly wrapped on the outer side of a wire, the device is convenient to use, an insulation protection layer of a cable is prevented from being uneven, the probability of mold blockage is reduced, the maintenance cost of the mold is reduced, the production efficiency is improved, and the production cost is reduced. The surface of the produced cable has no disintegrating slag, and the problem that the production yield of the cable is reduced is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable extrusion mould technical field, specifically, relate to a kind of cable extrusion mould. BACKGROUND

[0002] Cable is made of one or more mutually insulated conductors and outer insulating protective layer, wire from transmission to another place of electric power or information, the existing cable extrusion mould, eccentric phenomenon appears when cable is extruded in use, leading to cable outer wrapping to get uneven insulating protective layer, thick and thin are not one, and cable extruder is opened and stopped, and plastic remaining in the forming pipe opening is easy to block feeding port or flow out from gap and block mould, so that the cable protective layer produced is rough and uneven in thickness, not only block mould but also increase maintenance cost. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a kind of cable extrusion mould, including mould, mould core and cable extruder, mould includes forming pipe, circular table section and cylinder section sequentially from left to right, and the right end outside of cylinder section is equipped with external thread.

[0004] Mould core is coaxially arranged outside mould, and mould core is cylindrical cavity and one end is open, and the center of other end is equipped with wire hole, and the outside of wire hole is uniformly distributed with several fan-shaped feeding holes around circumference, the inner wall of mould core is equipped with internal thread, and mould core is connected with mould by thread.

[0005] Wire hole is fixedly connected with circular table cavity on the left side, and the right side of mould core is connected with circular ring matched with mould core, the side wall of circular ring is equipped with opening, and the inside of circular ring is rotatably connected with rotating sheet, the center of rotating sheet is equipped with through hole with diameter greater than wire hole, rotating sheet is equipped with several fan-shaped baffles matched with feeding hole around through hole, and one of baffle is equipped with knob that can be worn out opening, when knob is close to opening left side, baffle coincides with feeding hole, when knob is close to opening right side, baffle does not shield feeding hole.

[0006] Cable extruder is respectively equipped with extrusion outlet and cable outlet matched with circular ring and wire hole, and extrusion outlet is fixedly connected with circular ring, and cable outlet is fixedly connected with wire hole through through hole.

[0007] Further, the left end of the forming tube is provided with a guide ring, the cross section of the guide ring is in the shape of a hook, and the tip end is contracted towards the inside of the forming tube, the commonly used material of the cable protective sleeve is low-smoke halogen-free material, and in the production process, there is a situation of chain breaking of a small part of material molecules, when the cable is extruded through the mold, the broken molecular chain is adhered to the left end of the forming tube and carried to the outer surface of the cable to generate accumulated slag, the guide ring is arranged, the left end of the forming tube can protrude from the mold, the accumulated slag cannot be accumulated on the left side of the forming tube, and the problem of reducing the production yield of the cable is avoided.

[0008] Further, the inner side of the mold and the outer side of the wire tube are coated with an anti-sticking layer, which is beneficial to reducing the friction between the cable protective sleeve material and the mold and the wire tube, and achieving the purpose of avoiding the low-smoke halogen-free material from being adhered to the mold and the wire tube.

[0009] The utility model also includes other devices or components that can make the cable extrusion mold normally used, which are all conventional technical means in the field. In addition, the mold and the wire tube not specified in the utility model are all conventional technical means in the field.

[0010] The working principle of the utility model is that when the device is used, the dial block needs to be close to the right side of the opening, the baffle does not block the feeding hole, the cable protective sleeve material flows into the ring, the feeding hole, enters the mold, and the cable protective sleeve material moves along the wire tube to the forming tube, when the wire is stretched out of the wire tube, it is wrapped by the cable protective sleeve material on the outside, and then is shaped through the forming tube, and finally is extruded out of the forming tube.

[0011] The utility model has the advantages that the device is provided with the wire tube, the cable protective sleeve material can be uniformly wrapped on the outside of the wire, and the device is convenient to use; the insulation protective layer of the cable is uniform, the probability of mold blockage is reduced, and the maintenance cost of the mold is reduced; the surface of the produced cable is free of slag, and the problem of reducing the production yield of the cable is avoided. DRAWINGS

[0012] The utility model is further described below in combination with the drawings and examples.

[0013] Fig. 1 It is the overall structure schematic diagram of the utility model.

[0014] Fig. 2 It is the structure schematic diagram of the ring and the opening in the utility model.

[0015] Fig. 3 It is the cross section structure schematic diagram of the utility model.

[0016] Fig. 4 It is the structure schematic diagram of the rotating piece in the utility model.

[0017] Fig. 5 This is a schematic diagram of the cable extruder in this utility model. Detailed Implementation

[0018] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0019] Example

[0020] like Figs. 1-5 As shown, the present invention provides a cable extrusion die, including a die 1, a die core 2 and a cable extruder. The die 1 includes a forming tube 3, a frustum section 4 and a cylindrical section 5 arranged sequentially from left to right. The cylindrical section 5 has an external thread 6 on the outer side of its right end.

[0021] The mold core 2 is coaxially arranged on the outside of the mold 1. The mold core 2 is a cylindrical cavity with one end open and the center of the other end is provided with a wire hole 7. Several fan-shaped feed holes 8 are evenly distributed around the outside of the wire hole 7. The inner wall of the mold core 2 is provided with internal threads 9. The mold core 2 is threadedly connected to the mold 1.

[0022] A frustum-shaped hollow wire tube 10 is fixedly connected to the left side of the wire hole 7. A ring 11 matching the mold core 2 is connected to the right side of the mold core 2. The side wall of the ring 11 has an opening 12, and a rotating plate 13 is rotatably engaged on the inner side of the ring 11. The center of the rotating plate 13 has a through hole 14 with a diameter larger than that of the wire hole 7. The rotating plate 13 has several fan-shaped baffles 15 that match the feed hole 8 around the through hole 14. One of the baffles 15 has a lever 16 that can pass through the opening 12. When the lever 16 is close to the left side of the opening 12, the baffle 15 coincides with the feed hole 8. When the lever 16 is close to the right side of the opening 12, the baffle 15 does not block the feed hole 8.

[0023] The cable extruder is provided with an extrusion outlet 18 and a cable outlet 19 that match the ring 11 and the wire hole 7, respectively. The extrusion outlet 18 is fixedly connected to the ring 11, and the cable outlet 19 passes through the through hole 14 and is fixedly connected to the wire hole 7.

[0024] As further measures of the utility model, the left end pipe orifice of the forming pipe 3 is provided with a guide ring 17, the cross section of the guide ring 17 is in the shape of a hook, and the tip end is contracted towards the inside of the forming pipe 3, the commonly used material of the cable protection sleeve is low smoke halogen-free material, and this material can have the condition of broken molecular chain in the production process, when the cable is extruded through the mold 1, the broken molecular chain is adhered to the left end of the forming pipe 3 and carried to the outer surface of the cable to generate accumulated slag, the guide ring 17 is arranged, so that the left end outlet of the forming pipe 3 protrudes from the mold 1, the accumulated slag cannot form effective accumulation on the left side of the forming pipe 3, the accumulated slag is avoided from falling in a whole group and adhering to the surface of the cable, and the problem of reducing the production yield of the cable is reduced; the inner side of the mold 1 and the outer side of the wire pipe 10 are coated with an anti-sticking layer (not shown in the figure), which is beneficial to reducing the friction generated between the cable protection sleeve material and the mold 1 and the wire pipe 10, and achieving the purpose of avoiding the low smoke halogen-free material from adhering to the mold 1 and the wire pipe 10.

[0025] The working principle of the utility model is that, when the device is used, the dial block 16 is close to the right side of the opening 12, the baffle 15 does not block the feeding hole 8, the cable protection sleeve material flows into the circular ring 11 and the feeding hole 8, enters the mold 1, and the cable protection sleeve material moves along the wire pipe 10 towards the forming pipe 3, when the wire is stretched out from the wire pipe 10, it is wrapped by the cable protection sleeve material on the outside, then is shaped through the forming pipe 3, and finally is extruded outwards from the forming pipe 3.

[0026] The above has described the embodiments of the utility model, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A cable extrusion die, comprising a die, a die core, and a cable extruder, characterized in that: The mold includes a forming tube, a frustum section and a cylindrical section arranged from left to right, and the right end of the cylindrical section is provided with an external thread. The mold core is coaxially arranged on the outside of the mold. The mold core is a cylindrical cavity with one end open and a wire hole at the center of the other end. Several fan-shaped feed holes are evenly distributed around the outside of the wire hole. The inner wall of the mold core is provided with internal threads, and the mold core is threadedly connected to the mold. A frustum-shaped hollow wire tube is fixedly connected to the left side of the wire hole. A matching ring is connected to the right side of the mold core. The side wall of the ring has an opening, and a rotating plate is rotatably engaged on the inner side of the ring. The center of the rotating plate has a through hole with a diameter larger than that of the wire hole. Several fan-shaped baffles matching the feed hole are arranged around the through hole of the rotating plate, and one of the baffles has a lever that can pass through the opening. When the lever is close to the left side of the opening, the baffle coincides with the feed hole. When the lever is close to the right side of the opening, the baffle does not block the feed hole. The cable extruder is provided with an extrusion outlet and a cable outlet that match the ring and the wire hole, respectively. The extrusion outlet is fixedly connected to the ring, and the cable outlet passes through the through hole and is fixedly connected to the wire hole.

2. The cable extrusion die according to claim 1, characterized in that: The left end of the forming tube is provided with a guide ring. The cross-section of the guide ring is hook-shaped, and the tip of the guide ring is tapered towards the inside of the forming tube.

3. The cable extrusion die according to claim 1, characterized in that: The inner side of the mold and the outer side of the conduit are coated with an anti-sticking layer.

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