CN115985591A - Metal strip longitudinal wrapping mold and longitudinal wrapping forming method - Google Patents

Abstract

The invention discloses a metal strip longitudinal wrapping die and a longitudinal wrapping forming method, and relates to the technical field of cable process equipment. The metal strip longitudinal wrapping mold comprises a longitudinal wrapping mold body, wherein the longitudinal wrapping mold body is of a conical structure, one end of the longitudinal wrapping mold body is provided with an inlet, the other end of the longitudinal wrapping mold body is provided with an outlet, and the inner diameter of the longitudinal wrapping mold body is gradually reduced from the inlet to the outlet; the sections of the longitudinal wrapping die body from the inlet to the outlet are all in a vortex line shape. According to the invention, the metal strip wraps the wire core or the cable longitudinally through the metal strip longitudinal wrapping die and the longitudinal wrapping forming method, and the metal strip forms the tubular shielding layer, namely the longitudinal wrapping shielding layer of the cable. Compared with the original wrapping shielding layer, the longitudinal wrapping shielding layer is sealed, has good waterproof effect, can save about 50-58% of strips, and has good manufacturability. The longitudinal wrapping forming method is high in speed and saves working hours.

Description

Metal strip longitudinal wrapping mold and longitudinal wrapping forming method

Technical Field

The invention relates to the technical field of cable process equipment, in particular to a metal strip longitudinal wrapping mold and a longitudinal wrapping forming method.

Background

In wire and cable products with special requirements, a metal tape is usually coated outside an insulated wire core or a cable core to serve as a shielding layer, and the existing process of coating the insulated wire core or the cable core with the shielding layer is a wrapping type process, namely the metal tape is wound and coated on the insulated wire core or the cable core. And the wrapping type process has high material consumption, poor shielding effect and low winding speed. Therefore, a metal strip longitudinal covering mold and a longitudinal covering forming method are required to solve the above problems.

Disclosure of Invention

In order to solve the problems, the invention provides a metal strip longitudinal covering die and a longitudinal covering forming method, which adopt a longitudinal covering process, namely, a metal strip longitudinally covers an insulated wire core or a cable core through the longitudinal covering die. The method specifically comprises the following technical scheme:

the first aspect provides a metal strip longitudinal wrapping mold which comprises a longitudinal wrapping mold body, wherein the longitudinal wrapping mold body is of a conical structure, one end of the longitudinal wrapping mold body is provided with an inlet, the other end of the longitudinal wrapping mold body is provided with an outlet, and the inner diameter of the longitudinal wrapping mold body is gradually reduced from the inlet to the outlet; the sections of the longitudinal wrapping die body from the inlet to the outlet are all in a vortex line shape.

The metal strip leveler is arranged on one side of an inlet of the longitudinal wrapping die body and used for leveling the metal strip.

The longitudinal wrapping mold comprises a longitudinal wrapping mold body and is characterized by further comprising a plastic extruding machine and a rack, wherein the longitudinal wrapping mold body is arranged on the rack, and the plastic extruding machine is arranged on one side of an outlet of the longitudinal wrapping mold body.

Furthermore, the longitudinal covering die body is provided with a channel for the wire core or the cable core and the metal belt to pass through, one end of the channel is an inlet of the longitudinal covering die body, and the other end of the channel is an outlet of the longitudinal covering die body.

Furthermore, the metal belt is a copper-plastic composite belt or an aluminum-plastic composite belt.

Further, the diameter of the inlet of the longitudinal wrapping die body is 2-2.5 times of the diameter of the outlet.

Furthermore, the central axis of the longitudinal wrapping mold body is superposed with the central axis of the plastic extruding machine.

Further, the device also comprises a die fixing component, and the die fixing component is arranged at one end of the metal belt finisher.

In a second aspect, there is provided a method for realizing the longitudinally-wrapping molding of the longitudinally-wrapping metal strip mold of the first aspect, including the following steps:

s1, fixing a longitudinal wrapping mold body on a rack, and arranging a plastic extruding machine on one side of an outlet of the longitudinal wrapping mold body;

s2, enabling the metal belt to enter the longitudinal covering die body together with the wire core or the cable core from an inlet along the metal belt leveler;

s3, in a channel of the longitudinal covering die body, the metal belt is gradually rolled up under the action of the vortex-line-shaped section of the longitudinal covering die body so as to cover the wire core or the cable core, and the metal belt forms a tubular shielding layer;

and S4, enabling the tubular shielding layer and the wire core or the cable core to penetrate through an outlet of the longitudinal wrapping mold body to enter a plastic extruding machine, and extruding and wrapping the plastic on the tubular shielding layer by the plastic extruding machine to form a cable sheath, namely completing the longitudinal wrapping forming process of the metal strip.

Further, in step S4, the plastic extrusion temperature of the plastic extruder is 160-180 ℃.

Further, in step S3, one side of the metal tape is automatically lapped on the other side, and the wire core or the cable core is tightly coated to form a tubular shielding layer with an overlapped interface, wherein the overlapped width of the interface is 5-7m.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the metal belt wraps the wire core or the cable through the metal belt longitudinal wrapping die and the longitudinal wrapping forming method, and the metal belt forms the tubular shielding layer. The shielding layer has good shielding effect, full sealing and good waterproof effect, can save about 50-58% of strips, and has good manufacturability. The shielding layer passes through a plastic extruding machine, and the plastic extruding machine extrudes and wraps the plastic on the shielding layer to form a cable sheath. The longitudinal wrapping forming method is high in speed and saves working hours.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic top view of a longitudinal wrap die body with a metal strip leveler and die hold assembly in accordance with an embodiment of the present invention;

FIG. 2 isbase:Sub>A schematic view of the structure of FIG. 1 taken along the direction A-A;

FIG. 3 is a schematic view of the construction of a longitudinal mold body and a plastic extruder according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a cable according to an embodiment of the present invention;

fig. 5 is a schematic side view of a longitudinal covering mold body according to an embodiment of the invention.

The labels in the figures illustrate:

1-longitudinally wrapping a mould body; 2-an inlet; 3-an outlet; 4-a metal strip leveler; 5-a mold fixing part; 6-a metal strip; 7-a cable core; 8-a tubular shielding layer; 9-plastic extruder; 10-cable sheathing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, as the term is used in the generic and descriptive sense, and not for purposes of limitation, unless otherwise specified or implied, and the specific reference to a device or element is intended to be a reference to a particular element, structure, or component.

The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

The terms "transverse", "longitudinal", "horizontal", "vertical", "overhanging", and the like do not imply a requirement that the components be absolutely horizontal, vertical, or overhanging, but may be somewhat inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In order to more fully understand the technical contents of the present invention, the technical solutions of the present invention will be further described and illustrated with reference to specific embodiments.

Examples

Please refer to fig. 1-5, which illustrates a metal strip longitudinal wrapping mold, comprising a longitudinal wrapping mold body 1, wherein the longitudinal wrapping mold body 1 is a conical structure, one end of the longitudinal wrapping mold body 1 is provided with an inlet 2, the other end is provided with an outlet 3, and the inner diameter of the longitudinal wrapping mold body 1 gradually decreases from the inlet 2 to the outlet 3. The diameter of the inlet 2 of the longitudinal wrapping mould body 1 is 2-2.5 times of the diameter of the outlet 3. In this embodiment, the diameter of the inlet 2 of the longitudinal wrapping die body 1 is 2 times the diameter of the outlet 3. The section of the longitudinal covering die body 1 from the inlet 2 to the outlet 3 is in a vortex line shape. The longitudinal covering die body 1 is provided with a channel for the wire core or the cable core 7 and the metal belt 6 to pass through. One end of the channel is an inlet 2 of the longitudinal covering die body 1, and the other end of the channel is an outlet 3 of the longitudinal covering die body 1. The metal belt 6 is a copper-plastic composite belt or an aluminum-plastic composite belt. The wire core or the cable core 7 is an insulated wire core or an insulated cable core. The metal belt 6 in this embodiment is a copper-plastic composite belt. In this embodiment, an insulating cable core is used. The insulated cable core and the metal tape 6 enter the channel of the longitudinal covering die body 1 from the inlet 2 of the longitudinal covering die body 1. The metal strip temper mill further comprises a metal strip temper mill 4 and a die fixing part 5, wherein the die fixing part 5 and the longitudinal wrapping die body 1 are respectively arranged at two ends of the metal strip temper mill 4. The metal belt leveler 4 is arranged on one side of the inlet 2 of the longitudinal covering die body 1. The metal strip leveler 4 is used to level the metal strip 6 so that the metal strip 6 is kept flat and smoothly fed into the longitudinal wrapping mold body 1. Specifically, the metal belt 6 enters the longitudinal covering die body 1 from the inlet 2 along the metal belt leveler 4, the insulated cable core directly enters the longitudinal covering die body 1 from the inlet 2, in a channel of the longitudinal covering die body 1, the metal belt 6 is gradually rolled up under the action of a vortex-line-shaped section of the longitudinal covering die body 1, one side of the metal belt 6 is automatically overlapped on the other side to form a tubular shielding layer 8, and the insulated cable core is covered. The longitudinal wrapping mold comprises a longitudinal wrapping mold body 1 and is characterized by further comprising a plastic extruding machine 9 and a machine frame, wherein the plastic extruding machine 9 is arranged on one side of an outlet 3 of the longitudinal wrapping mold body 1. The longitudinal covering die body 1 is fixed on the frame through a die fixing part 5. The central axis of the longitudinal wrapping die body 1 is superposed with the central axis of the plastic extruding machine 9. The tubular shielding layer 8 formed by the metal belt 6 and the cable core 7 pass through the outlet 3 of the longitudinal covering mould body 1 and enter a plastic extruding machine 9, the plastic extruding machine 9 extrudes and covers the plastic on the tubular shielding layer 8 to form a cable sheath 10, and finally the cable is manufactured and output from the outlet of the plastic extruding machine 9. The schematic structure of the cable is shown in fig. 4. The cable comprises a cable core 7, a tubular shielding layer 8 and a cable sheath 10 from inside to outside.

The longitudinal wrapping forming method is completed based on the device and comprises the following steps:

s1, fixing a longitudinal covering die body on a rack, and arranging a plastic extruding machine on one side of an outlet of the longitudinal covering die body;

s2, enabling the metal belt to enter the longitudinal covering die body together with the wire core or the cable core from an inlet along the metal belt leveler;

s3, in a channel of the longitudinal covering die body, the metal belt is gradually rolled up under the action of the vortex-line-shaped section of the longitudinal covering die body so as to cover the wire core or the cable core, and the metal belt forms a tubular shielding layer;

and S4, the tubular shielding layer and the wire core or the cable core penetrate through an outlet of the longitudinal covering die body to enter a plastic extruding machine, and the plastic extruding machine extrudes and covers the tubular shielding layer with plastic to form a cable sheath, namely the longitudinal covering forming process of the metal strip is completed.

In step S1, the distance between the outlet of the longitudinal wrapping mold body and the plastic extruding machine is 100-150mm.

In the step S3, the metal belt is automatically lapped on one side of the longitudinal covering die body under the action of the vortex-line-shaped section of the longitudinal covering die body, the wire core or the cable core is tightly covered to form a tubular shielding layer with an overlapped interface, and the overlapped width of the interface is 5-7m.

In step S4, the plastic extrusion temperature of the plastic extruding machine is 160-180 ℃, the lap joint parts of the metal strips are automatically bonded together at the temperature, and the tubular shielding layer and the cable sheath are bonded into a whole to form a complete shielding layer.

Specifically, the longitudinal wrapping mold body 1 is first fixed to a frame, and the plastic extruder 9 is disposed on the side of the outlet 3 of the longitudinal wrapping mold body 1. The distance between the outlet 3 of the longitudinal wrapping die body 1 and the plastic extruder 9 was 100mm. The metal strip 6 is fed along the metal strip flattener 4 together with the cable core 7 from the inlet 2 into the longitudinal covering mould body 1. In the passage of the longitudinal covering die body 1, the metal tape 6 and the cable core 7 are simultaneously moved forward by the traction force. The cable core 7 makes a linear motion, and the metal belt 6 is gradually rolled up under the action of the vortex-line-shaped section of the longitudinal covering mould body 1 so as to cover the cable core 7 inside to form a tubular shielding layer 8. In the process, one side of the metal belt 6 is automatically lapped on the other side, the cable core 7 is tightly coated to form a tubular shielding layer 8 with an overlapped interface, and the overlapped width of the interface is 5m. The tubular shielding layer 8 formed by the metal belt 6 and the cable core 7 pass through the outlet 3 of the longitudinal covering mould body 1 and enter a plastic extruding machine 9, and the plastic extruding machine 9 extrudes and covers plastic on the tubular shielding layer 8 at the temperature of 160 ℃ to form a cable sheath 10, namely the longitudinal covering forming process for forming the shielding layer and finishing the metal belt material is completed. Since the metal tape 6 is a copper-plastic composite tape, the tubular shielding layer 8 and the plastic automatically adhere together at a certain temperature.

According to the invention, the metal belt wraps the wire core or the cable through the metal belt longitudinal wrapping die and the longitudinal wrapping forming method, and the metal belt forms the tubular shielding layer, namely the longitudinal wrapping shielding layer. The shielding layer of the longitudinal wrapping has good shielding effect, is fully sealed, has good waterproof effect, can save about 50 to 58 percent of strip compared with the wrapping process, and has good manufacturability. Compared with the wrapping forming process, the longitudinal wrapping forming method has the advantages of good manufacturability, high production speed, labor hour saving and material and production cost reduction.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The metal strip longitudinal wrapping mold is characterized by comprising a longitudinal wrapping mold body, wherein the longitudinal wrapping mold body is of a conical structure, one end of the longitudinal wrapping mold body is provided with an inlet, the other end of the longitudinal wrapping mold body is provided with an outlet, and the inner diameter of the longitudinal wrapping mold body is gradually reduced from the inlet to the outlet; the sections of the longitudinal wrapping die body from the inlet to the outlet are all in a vortex line shape.

2. The metal strip rip molding apparatus of claim 1, further comprising a metal strip leveler disposed on an inlet side of the rip molding body, the metal strip leveler being configured to level the metal strip.

3. A metal strip slitting die as claimed in claim 2, further comprising a plastic extruder and a frame, said slitting die body being disposed on the frame, said plastic extruder being disposed on the exit side of the slitting die body.

4. The metal strip longitudinal covering die of claim 3, wherein the longitudinal covering die body is provided with a channel for the wire core or the cable core and the metal strip to pass through, one end of the channel is an inlet of the longitudinal covering die body, and the other end of the channel is an outlet of the longitudinal covering die body.

5. A metal strip longitudinal wrapping die according to claim 4, wherein said metal strip is a copper-plastic composite strip or an aluminum-plastic composite strip.

6. A metal strip longitudinal wrapping die according to claim 5, wherein the diameter of the inlet of the longitudinal wrapping die body is 2 to 2.5 times the diameter of the outlet.

7. A metal strip slitting die as claimed in claim 6, wherein the central axis of said body of said slitting die is coincident with the central axis of a plastic extruder.

8. The metal strip mold of claim 7, further comprising a mold securing member disposed at an end of the metal strip leveler.

9. A method for carrying out a metal strip longitudinal wrapping mold according to any one of claims 4 to 8, characterized by comprising the following steps:

s1, fixing a longitudinal wrapping mold body on a rack, and arranging a plastic extruding machine on one side of an outlet of the longitudinal wrapping mold body;

s2, enabling the metal belt to enter the longitudinal covering die body together with the wire core or the cable core from an inlet along the metal belt leveler;

s3, in a channel of the longitudinal covering die body, the metal belt is gradually rolled up under the action of the vortex-line-shaped section of the longitudinal covering die body so as to cover the wire core or the cable core, and the metal belt forms a tubular shielding layer;

and S4, the tubular shielding layer and the wire core or the cable core penetrate through an outlet of the longitudinal covering die body to enter a plastic extruding machine, and the plastic extruding machine extrudes and covers the tubular shielding layer with plastic to form a cable sheath, namely the longitudinal covering forming process of the metal strip is completed.

10. A method for forming longitudinal wraps as claimed in claim 9, wherein in step S4, the plastic extruder has a plastic extrusion temperature of 160-180 ℃.

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