Novel cable mold

Abstract

The invention discloses a novel cable mold, which integrates the coating of a metal strip and the extrusion molding of a sheath layer on one group of molds, so that the length of a production line is reduced, the production procedures are reduced, and the production cost is reduced. The metal circular ring comprises a circular ring part at the axial outer end and a first necking taper sleeve at the axial inner end; a connecting block; the conical material feeding sleeve comprises a conical feeding plate necking down from outside to inside in the axial direction, a guide circular ring and a second necking down conical sleeve, a plurality of feeding small holes penetrating in the thickness direction are formed in the radial middle area of the conical feeding plate, and the guide circular ring is fixedly connected to the axial rear end of the conical feeding plate; the axial rear end of the guide circular ring is connected with a second necking taper sleeve; and the external guide necking sleeve comprises a third necking taper sleeve and a guide ring.

Description

Technical Field

[0001] The invention relates to the technical field of cable production, in particular to a novel cable mould. Background Art

[0002] At present, the market has increasingly detailed requirements for cable functions, and customized cables have emerged. At the same time, more requirements have been put forward for the molds used in cable production. Figure 1 The cable structure shown includes a central metal layer 1, an insulating layer 2, a metal strip 3, and a sheath layer 4, wherein the metal strip 3 is embedded in the thickness area of ​​the sheath layer 4. The existing cable mold needs to divide the sheath layer into two side sheath layers, and the inner sheath and the outer sheath are made separately. The inner sheath is first coated on the insulating layer 2, and then the metal strip 3 is coated with the inner sheath, and finally the outer sheath is coated on the metal strip 3, which leads to many production processes, long production lines, and high production costs. For this reason, it is urgently necessary to develop a cable mold that can reduce costs. Summary of the invention

[0003] In view of the above problems, the present invention provides a new type of cable mold, which combines the metal strip coating and the extrusion molding of the sheath layer in one set of molds, thereby reducing the length of the production line, reducing the production processes, and reducing the production cost.

[0004] A new type of cable mold, characterized in that it includes:

[0005] A metal ring, comprising a ring portion at an axial outer end and a first tapered sleeve at an axial inner end;

[0006] Connect blocks;

[0007] A conical material feed sleeve, comprising a conical feed plate that is axially tapered from outside to inside, a guide ring, and a second tapered sleeve with a tapered opening, wherein a plurality of feed holes penetrating in the thickness direction are arranged in the radial middle region of the conical feed plate, a guide ring is fixedly connected to the axial rear end of the conical feed plate, and a second tapered sleeve is connected to the axial rear end of the guide ring;

[0008] and an external guide closing sleeve, which includes a third shrinking cone sleeve and a guide ring sleeve;

[0009] The connecting block is fixedly installed on the radial outer periphery of the annular part, the inner wall of the guide annular ring is tightly attached to the outer periphery of the connecting block and fixedly connected, a guiding annular groove with a notch is formed between the outer wall of the annular part and the inner wall of the guide annular ring, the outer wall of the first shrinking cone sleeve and the inner wall of the second shrinking cone sleeve form a first closing cone space, the cavity formed at the front end of the conical feed plate is a sheath feeding cavity, a sheath material advancing cavity is formed between the outer wall of the conical material feeding sleeve and the inner wall of the third shrinking cone sleeve, an extrusion material cavity is formed between the inner wall of the axial end of the third shrinking cone sleeve and the outer wall of the second shrinking cone sleeve, and the inner cavity of the guide annular sleeve is a sheath sheathing molding cavity.

[0010] It is further characterized by:

[0011] A positioning screw hole is arranged on the outer arc surface of the connection block, and a countersunk positioning hole is arranged on the guide ring in the thickness direction. The bolt passes through the countersunk positioning hole and is fixed in the positioning screw hole, which makes the assembly of the connection block quick and convenient;

[0012] The axial starting outer wall of the conical feed plate is provided with a positioning inclined surface identical to the inner wall of the third tapered sleeve, and the conical material feed sleeve is fitted to the starting inner wall area of ​​the third tapered sleeve through the positioning inclined surface, ensuring quick and convenient connection;

[0013] The radial middle area of ​​the conical feed plate is provided with multiple layers of feed holes arranged radially in sequence, so as to ensure uniform and reliable conveying of the sheath material.

[0014] After adopting the structure of the present invention, the central area of ​​the sheath feeding space is penetrated and coated with a semi-finished cable, a metal strip is pre-placed longitudinally on the outer periphery of the insulating layer of the semi-finished cable, the diameter of the annular part is larger than the diameter of the semi-finished cable, the semi-finished cable passes through the annular part in alignment, the metal strip passes through the guide ring groove from front to back, and forms a longitudinally wrapped unsealed state, part of the sheath material of the sheath feeding cavity is filled on the outer periphery of the insulating layer of the semi-finished cable, and is pre-shaped after passing through the inner cavity area of ​​the annular part, and then the metal strip is coated on the inner layer preformed sheath material along the first closing cone space, and at the same time another part of the sheath material enters the sheath material advancing cavity through a number of feed holes, and finally the sheath material is coated on the outer surface of the metal strip that has been longitudinally wrapped along the extrusion material cavity, and then the entire cable is output after being shaped along the sheath coating molding cavity, which embeds the metal strip in the thickness area of ​​the sheath layer, and combines the extrusion molding of the metal strip and the sheath layer on a group of molds, thereby reducing the length of the production line, reducing the production process, and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of cable structure made for the needs of existing technology;

[0016] Figure 2It is a schematic cross-sectional view of the front view of the present invention;

[0017] Figure 3 It is an assembly cross-sectional view of the metal ring, the connecting block and the isolation guide sleeve of the present invention;

[0018] The names corresponding to the serial numbers in the figure are as follows:

[0019] Central metal layer 1, insulation layer 2, metal strip 3, sheath layer 4;

[0020] Metal ring 10, ring part 11, first shrinking cone sleeve 12, connecting block 20, positioning screw hole 21, conical material feed sleeve 30, conical feed plate 31, alignment slope 311, guide ring 32, countersunk positioning hole 321, second shrinking cone sleeve 33, feed hole 34, external guide closing sleeve 40, third shrinking cone sleeve 41, guide ring sleeve 42, guide ring groove 50, first closing cone space 60, sheath feeding cavity 70, sheath material advancing cavity 80, extrusion material cavity 90, sheath overmolding cavity 100, bolt 110. DETAILED DESCRIPTION

[0021] A new type of cable mold, see Figure 2-Figure 3 , which includes a metal ring 10, a connecting block 20, a conical material feeding sleeve 30, and an external guide closing sleeve 40;

[0022] The metal ring 10 includes a ring portion 11 at an axial outer end and a first tapered sleeve 12 at an axial inner end;

[0023] The conical material feed sleeve 30 comprises a conical feed plate 31 which is axially tapered from outside to inside, a guide ring 32, and a second tapered sleeve 33. The radial middle region of the conical feed plate 31 is provided with a plurality of feed holes 34 which penetrate in the thickness direction. The axial rear end of the conical feed plate 31 is fixedly connected with the guide ring 32, and the axial rear end of the guide ring 32 is connected with the second tapered sleeve 33.

[0024] The external guide sleeve 40 includes a third shrinking cone sleeve 41 and a guide ring sleeve 42;

[0025] A connecting block 20 is fixedly installed on the radial outer periphery of the annular portion 11, and the inner wall of the guide ring 32 is tightly attached to the outer periphery of the connecting block 20 and fixedly connected. A guide ring groove 50 with a notch is formed between the outer wall of the annular portion 11 and the inner wall of the guide ring 32. The outer wall of the first tapered cone sleeve 12 and the inner wall of the second tapered cone sleeve 33 form a first closing cone space 60. The cavity formed at the front end of the conical feed plate 31 is a sheath feeding cavity 70. A sheath material advancing cavity 80 is formed between the outer wall of the conical material feed sleeve 30 and the inner wall of the third tapered cone sleeve 41. An extrusion material cavity 90 is formed between the inner wall of the axial end of the third tapered cone sleeve 41 and the outer wall of the second tapered cone sleeve 33. The inner cavity of the guide ring sleeve 42 is a sheath sheathing molding cavity 100.

[0026] When it comes to specific implementation,

[0027] A positioning screw hole 21 is provided on the outer arc surface of the connecting block 20, and a countersunk positioning hole 321 is provided on the guide ring 32 in the thickness direction. The bolt 110 passes through the countersunk positioning hole 21 and is fixed in the positioning screw hole 321. The connecting block 20 and the metal ring 10 are an integral part, which makes the assembly of the connecting block quick and convenient.

[0028] In specific implementation, the axial starting outer wall of the conical feed plate 31 is provided with an alignment slope 311 which is the same as the inner wall of the third tapered cone sleeve 41. The conical material feed sleeve 30 is fitted to the starting inner wall area of ​​the third tapered cone sleeve 41 through the alignment slope 311 to ensure quick and convenient connection.

[0029] In specific implementation, a radially middle region of the conical feed plate 31 is provided with multiple layers of feed holes 34 arranged radially in sequence to ensure uniform and reliable conveyance of the sheath material.

[0030] The working principle is as follows: the central area of ​​the sheath feeding space 70 is penetrated and covered with a semi-finished cable, which includes a central metal layer 1 and an insulating layer 2. A metal strip is pre-placed longitudinally on the outer periphery of the insulating layer 2 of the semi-finished cable. The metal strip is laid flat and a gap is left between the metal strip and the insulating layer 2. In the initial stage, the metal strip is pulled through the guide ring groove 50 by a pulling device; the diameter of the annular portion 11 is larger than the diameter of the semi-finished cable, and the semi-finished cable passes through the inner ring of the annular portion 11 in alignment, and the metal strip 3 passes through the guide ring groove 50 from front to back, forming a longitudinally wrapped unsealed state (blocked by the connecting block 20). Part of the sheath material in the feeding cavity 70 is filled on the outer periphery of the insulating layer 2 of the semi-finished cable and is pre-shaped after passing through the inner cavity area of ​​the circular ring part 11. Then, the metal strip 3 is coated on the inner preformed sheath material along the first closing conical space 60. At the same time, another part of the sheath material enters the sheath material advancing cavity 80 through a number of feeding holes 34. Finally, the sheath material is coated on the outer surface of the longitudinally wrapped metal strip 3 along the extrusion cavity 90. Then, the entire cable is shaped along the sheath coating molding cavity 100 and then output, which embeds the metal strip 3 in the thickness area of ​​the sheath layer 4.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new type of cable mold, characterized in that: It includes: A metal ring, comprising a ring portion at an axial outer end and a first tapered sleeve at an axial inner end; Connect blocks; A conical material feed sleeve, comprising a conical feed plate that is axially tapered from outside to inside, a guide ring, and a second tapered sleeve with a tapered opening, wherein a plurality of feed holes penetrating in the thickness direction are arranged in the radial middle region of the conical feed plate, a guide ring is fixedly connected to the axial rear end of the conical feed plate, and a second tapered sleeve is connected to the axial rear end of the guide ring; and an external guide closing sleeve, which includes a third shrinking cone sleeve and a guide ring sleeve; The connecting block is fixedly installed on the radial outer periphery of the annular part, the inner wall of the guide annular ring is tightly attached to the outer periphery of the connecting block and fixedly connected, a guiding annular groove with a notch is formed between the outer wall of the annular part and the inner wall of the guide annular ring, the outer wall of the first shrinking cone sleeve and the inner wall of the second shrinking cone sleeve form a first closing cone space, the cavity formed at the front end of the conical feed plate is a sheath feeding cavity, a sheath material advancing cavity is formed between the outer wall of the conical material feeding sleeve and the inner wall of the third shrinking cone sleeve, an extrusion material cavity is formed between the inner wall of the axial end of the third shrinking cone sleeve and the outer wall of the second shrinking cone sleeve, and the inner cavity of the guide annular sleeve is a sheath sheathing molding cavity.

2. A new type of cable mold according to claim 1, characterized in that: The outer arc surface of the connecting block is provided with a positioning screw hole, and the guide ring is provided with a countersunk positioning hole penetrating in the thickness direction. The bolt penetrates the countersunk positioning hole and is fixed in the positioning screw hole.

3. A new type of cable mold according to claim 1, characterized in that: The axial starting outer wall of the conical feed plate is provided with an alignment slope which is the same as the inner wall of the third necking cone sleeve, and the conical material feed sleeve is fitted to the starting inner wall area of ​​the third necking cone sleeve through the alignment slope.

4. A new type of cable mold according to claim 1, characterized in that: The radial middle area of ​​the conical feed plate is provided with multiple layers of feed holes arranged radially in sequence.

5. A new type of cable mold according to claim 1, characterized in that: The central area of ​​the sheath feeding space is penetrated and covered with a semi-finished cable. A metal strip is pre-placed longitudinally on the outer periphery of the insulating layer of the semi-finished cable. The diameter of the circular ring part is larger than the diameter of the semi-finished cable. The semi-finished cable passes through the circular ring part in a concentric manner. The metal strip passes through the guide ring groove from front to back to form a longitudinally wrapped unsealed state. Part of the sheath material in the sheath feeding cavity is filled on the outer periphery of the insulating layer of the semi-finished cable and is pre-shaped after passing through the inner cavity area of ​​the circular ring part. Then the metal strip is coated on the inner layer preformed sheath material along the first closing cone space. At the same time, another part of the sheath material enters the sheath material advancing cavity through a number of feed holes. Finally, the sheath material is coated on the outer surface of the metal strip that has been longitudinally wrapped along the extrusion material cavity. Then the entire cable is output after being shaped along the sheath coating molding cavity. It embeds the metal strip in the thickness area of ​​the sheath layer, and it combines the extrusion molding of the metal strip and the sheath layer on a group of molds.

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