CN109910262B - Three-layer co-extrusion machine head of bicolor quarter insulated cable - Google Patents
Three-layer co-extrusion machine head of bicolor quarter insulated cable Download PDFInfo
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- CN109910262B CN109910262B CN201910290328.4A CN201910290328A CN109910262B CN 109910262 B CN109910262 B CN 109910262B CN 201910290328 A CN201910290328 A CN 201910290328A CN 109910262 B CN109910262 B CN 109910262B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 34
- 239000011810 insulating material Substances 0.000 claims abstract description 154
- 239000004020 conductor Substances 0.000 claims description 74
- 238000009413 insulation Methods 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 17
- 239000012774 insulation material Substances 0.000 claims description 12
- 238000009827 uniform distribution Methods 0.000 claims description 9
- 239000004579 marble Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000003292 glue Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Abstract
The invention discloses a three-layer co-extrusion machine head of a double-color quarter insulated cable, which comprises a machine shell, an outer layer shunt, a middle layer shunt, an inner layer shunt, a core rod deviation adjusting bolt, a die sleeve seat deviation adjusting bolt, an inner die core, a middle die core, an inner layer core, a die sleeve adjusting wire ring, a die sleeve seat, an insulating material A feeding runner, an insulating material B feeding runner and a sheath feeding runner. Through the scheme, the invention has the advantages of simple structure, simplified processing technology, improved quality of finished products and the like, and has high practical value and popularization value in the technical field of wire and cable production and processing.
Description
Technical Field
The invention relates to the technical field of wire and cable production and processing, in particular to a three-layer co-extrusion machine head of a bicolor quarter insulated cable.
Background
In the wire and cable industry, the use of a green/yellow combination (i.e., a yellow-green ground wire) is required for identifying insulated cores for connection to ground or similar protective purposes. In the prior art, a green/yellow combined color insulating wire core is formed by two parts of double colors so as to meet the use requirement of a power line. In the case of more cables and more complex safety systems, the plurality of green/yellow combined color insulated cables used as the grounding wires, the protection uses and the lightning protection grounding wires are easy to be confused, and bring great inconvenience to installation, use and maintenance. Normally, the insulation layer (insulation sleeve) of the conventional yellow-green grounding wire adopts a single production mode, and the yellow-green color of the surface of the insulation layer adopts a coating mode; after the insulating sleeve is produced and molded, the insulating sleeve is sleeved on the cable conductor, and the cable conductor is wrapped in a heat shrinkage mode; the yellow-green grounding wire produced by the method has low production efficiency and higher manufacturing cost.
Therefore, the green/yellow combined color insulation wire cores in various forms are inoculated, but the co-extrusion machine heads for producing the green/yellow combined color insulation wire cores in various forms are not special in the market, and the existing conventional co-extrusion machine heads cannot meet the requirement of double-color four-component co-extrusion. The invention of China patent with the application number of 201310713951.9 and the name of a dual-purpose three-layer co-extrusion machine head of a rubber crosslinked cable comprises a machine head body, wherein an outer shielding layer fluid, an insulating layer fluid and an inner shielding layer fluid are sequentially arranged in the machine head body from right; the die opening is slidably arranged in the outer shielding layer split body, the die sleeve is slidably arranged in the insulating layer split body, and the die core is slidably arranged in the inner shielding layer split body; the machine head body is sequentially provided with an outer shielding layer glue inlet, an insulating layer glue inlet and an inner shielding layer glue inlet from left to right, the inner shielding layer glue inlet is communicated with an inner glue channel of an inner shielding layer shunt, the insulating layer glue inlet is communicated with an inner glue channel of an insulating layer shunt, and the outer shielding layer glue inlet is communicated with the inner glue channel of an outer shielding layer shunt. The technology realizes the functions of sequentially injecting glue and extruding an inner shielding layer, an insulating layer and an outer shielding layer. It is generally known that the inner shield, insulation and outer inner shield of a cable are all wrapped around the cable conductor and are different layers.
Therefore, it is highly required to provide a three-layer co-extrusion machine head of a double-color quarter-insulation cable, so as to fill co-extrusion of double-color insulation materials of a cable insulation layer and improve the production benefit of a green/yellow combined color grounding wire.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a three-layer co-extrusion machine head of a bicolor quarter-insulation cable, which adopts the following technical scheme:
the three-layer co-extrusion machine head of the double-color four-component insulated cable comprises a built-in conical hollow shell, a conical hollow inner layer shunt, a conical hollow outer layer shunt, a conical hollow middle layer shunt, a core rod, a conical hollow inner layer shunt, a conical hollow outer layer shunt and a conical hollow inner layer shunt, wherein the conical hollow inner and outer surface edges of the shell are inserted into the shell along the feeding direction of a cable conductor, the conical hollow inner wall of the shell is matched with the conical hollow inner wall of the shell, the conical hollow outer layer shunt is internally provided with the conical hollow inner layer shunt, the inner cable conductor penetrates through the hollow core rod which penetrates through the conical hollow inner layer shunt, the insulating material A feeding flow passage is sequentially sleeved in the conical hollow of the shell, is provided with a hollow inner mold core, a middle mold core and an inner mold core along the feeding direction of the cable conductor, is fixedly connected with the front end of the shell, is provided with a hollow mold sleeve seat along the feeding direction of the cable conductor and used for limiting and fixing the inner mold core in the conical hollow of the shell, sequentially penetrates through the shell, the outer layer shunt and the middle layer shunt, is used for uniformly dividing the insulating material A into two and conveying the insulating material A to the relative position between the inner mold core and the middle mold core, is extruded on the opposite outer edge of the cable conductor by the inner mold core, sequentially penetrates through the outer layer shunt and the middle mold core, is used for uniformly dividing the insulating material B into two and conveying the insulating material B between the inner mold core and the middle mold core, is extruded on the cable conductor by the inner mold core and is crossly distributed with the insulating material A to wrap the insulating material B feeding flow passage of the cable conductor, and a sheath feeding runner which is arranged through the shell, is used for sheath feeding and is extruded on the cable conductor wrapped with the insulating material A and the insulating material B by the middle die core.
The inner die core is in extrusion contact with the front end of the core rod, and the middle die core is in extrusion contact with the front end of the middle-layer shunt.
The shell is fixedly connected with the outer layer shunt, the outer layer shunt is fixedly connected with the middle layer shunt, and the middle layer shunt is fixedly connected with the inner layer shunt.
Further, the three-layer co-extrusion machine head of the double-color quarter insulated cable further comprises a core rod locking flange sleeved on the edge of the rear end of the core rod and used for being fixed on the inner-layer shunt, a die sleeve seat locking flange fixed at the front end of the shell and sleeved on the outer edge of the die sleeve seat, and a hollow die sleeve adjusting wire ring arranged in the die sleeve seat and internally provided with a cable conductor with a sheath for extrusion to penetrate.
Further, the three-layer co-extrusion machine head of the double-color quarter insulated cable further comprises a plurality of core rod deflection adjusting bolts which penetrate through the inner layer shunt at equal intervals in a ring shape and are used for adjusting the core rod axle center, and a plurality of die sleeve seat deflection adjusting bolts which penetrate through the shell at equal intervals in a ring shape and are used for adjusting the die sleeve seat axle center.
Preferably, the casing includes that the first cylinder, the second cylinder, the third cylinder and the fourth cylinder of just integrated into one piece are laid along cable conductor feed direction, offer on the fourth cylinder and with the eccentric screw hole of several die sleeve seat accent of die sleeve seat accent partial bolt one-to-one, and run through in proper order first cylinder, second cylinder, third cylinder and fourth cylinder set up, be used for installing outer shunt, interior mold core, well mold core, inlayer core and die sleeve seat, and with the first through-hole of die sleeve seat accent partial screw hole intercommunication.
The first through hole comprises a first conical hole penetrating through the first cylinder, the second cylinder and the third cylinder in sequence, a second conical hole communicated with the first conical hole along the feeding direction of the cable conductor, a third conical hole communicated with the second conical hole along the feeding direction of the cable conductor, and a seventh circular hole communicated with the third conical hole and used for installing a die sleeve seat; the outer layer diverter is taper matched with the first tapered bore.
The insulating material B feeding flow passage comprises an insulating material B feeding port which penetrates through the first cylinder and is communicated with the first conical hole.
The sheath feeding runner comprises a sheath feeding hole which penetrates through the first cylinder and is communicated with the first conical hole.
Preferably, the outer layer shunt comprises a fifth cylinder, a first conical column and a first conical material guiding part which are sequentially arranged along the feeding direction of the cable conductor and are integrally formed, and an eighth conical hole which is sequentially penetrated through the first conical column, the fifth cylinder and the first conical material guiding part and is matched with the outer edge of the middle layer shunt in a conical manner; the first conical column and the first conical material guiding part are sleeved in the first conical hole.
The insulating material A feeding flow passage comprises an insulating material A feeding port which penetrates through the fifth cylinder and is communicated with the eighth conical hole.
The insulating material B feeding flow passage further comprises a first insulating material flow passage groove which is formed in the fifth cylinder, one end of the first insulating material flow passage groove corresponds to the position of the insulating material B feeding port, and a third through hole which penetrates through the fifth cylinder and is communicated with the eighth conical hole.
The sheath feeding runner further comprises a second insulating material flow groove which is formed in the first conical column and is correspondingly matched with the sheath feeding hole, and a first resistor which is arranged on the first conical column and is used for equally dividing and conveying sheath feeding to a position between the middle die core and the inner layer core.
Preferably, the middle-layer shunt comprises a sixth cylinder, a second conical column and a second conical material guiding part which are sequentially arranged along the feeding direction of the cable conductor and are integrally formed, and a fourth through hole which penetrates through the sixth cylinder, the second conical column and the second conical material guiding part and is matched with the outer edge of the inner-layer shunt in a taper manner; the front end of the second conical material guiding part is extruded with the rear end of the middle mold core, and the diameters of the second conical material guiding part and the middle mold core are equal.
The fourth through hole comprises a ninth conical hole, a tenth conical hole and a fourth circular hole which are sequentially arranged along the feeding direction of the cable conductor; the inner layer diverter is disposed in the ninth tapered bore.
The insulating material A feeding flow passage further comprises a third insulating material flow passage groove which is formed in the second conical column, one end of the third insulating material flow passage groove corresponds to the position of the insulating material A feeding hole and is used for receiving insulating material A fed by the insulating material A feeding hole, a fourth insulating material flow passage groove and a fifth insulating material flow passage groove which are formed in the second conical column, one end of the fourth insulating material flow passage groove is communicated with the other end of the third insulating material flow passage groove, the fourth insulating material flow passage groove and the fifth insulating material flow passage groove are used for uniformly dividing the insulating material A into two and conveying the insulating material A to the opposite positions of the shape columns, a sixth through hole which penetrates through the second conical column and is communicated with a ninth conical hole and is communicated with the other end of the fourth insulating material flow passage groove, and a seventh through hole which penetrates through the second conical column and is communicated with the ninth conical hole and is communicated with the other end of the fifth insulating material flow passage groove; the sixth through hole coincides with the hole mandrel of the seventh through hole.
The insulating material B feeding flow passage further comprises a fifth through hole which penetrates through the second conical column, corresponds to the third through hole and is overlapped with the third through hole.
Preferably, the inner-layer shunt comprises a seventh cylinder, an eighth cylinder, a third cone-shaped cylinder and a third cone-shaped guide part which are sequentially arranged along the feeding direction of the cable conductor and are integrally formed, a step through hole for sleeving a core rod is sequentially formed through the seventh cylinder, the eighth cylinder, the third cone-shaped cylinder and the third cone-shaped guide part, and a matched spherical surface which is communicated with the front end of the step through hole, is in extrusion contact with the front end of the core rod and is formed in the third cone-shaped guide part; and a plurality of mandrel deflection adjusting threaded holes which are matched with the mandrel deflection adjusting bolts and are used for adjusting the central shaft of the mandrel are formed in the seventh cylinder.
The insulating material A feeding flow passage further comprises a first insulating material A uniform distribution component which is arranged on the third conical column and corresponds to the position of the sixth through hole and is used for receiving the insulating material A conveyed by the sixth through hole, and a second insulating material A uniform distribution component which is arranged on the third conical column and corresponds to the position of the seventh through hole and is used for receiving the insulating material A conveyed by the seventh through hole; the first insulating material A uniform distribution component and the two insulating material A uniform distribution components have the same structure and are oppositely arranged on the third conical column.
The first insulating material A evenly-dividing assembly comprises a sixth insulating material flow groove which is formed in a third conical column, one end of the sixth insulating material flow groove is communicated with a sixth through hole, a seventh insulating material flow groove which is formed in the third conical column, one end of the seventh insulating material flow groove is communicated with the other end of the sixth insulating material flow groove, the other end of the seventh insulating material flow groove is matched with the third conical material guiding part, the seventh insulating material flow groove is used for evenly dividing the insulating material A into two parts, and the second resistor is arranged on the third conical column and used for evenly dividing the seventh insulating material flow groove into two parts.
The insulating material B feeding flow passage further comprises an eighth insulating material flow passage groove which is formed in the third conical column, is communicated with the fifth through hole and is used for uniformly dividing the insulating material B into two parts and conveying the insulating material B to the third conical material guiding part; the insulation material B conveyed by the eighth insulation material flow through groove and the insulation material A conveyed by the seventh insulation material flow through groove are alternately wrapped around the cable conductor.
Preferably, the core rod comprises a core rod column sleeved in the core rod locking flange and the stepped through hole, a core rod head arranged at the front end of the core rod column and respectively matched with the matched spherical surface and the inner die core in an extrusion mode, and a fifth round hole which is formed in the core rod column and the core rod head along the feeding direction of the cable conductor and used for the cable conductor to penetrate through.
Further, the three-layer co-extrusion machine head of the double-color quarter insulated cable further comprises a seventh conical hole, a third round hole and a second round hole which are formed in the inner mold core along the feeding direction of the cable conductor, a cylindrical oblique slot which is formed in the inner mold core and communicated with the seventh conical hole, a sixth conical hole and a fifth conical hole which are formed in the middle mold core along the feeding direction of the cable conductor, and a fourth conical hole and a first round hole which are formed in the inner mold core along the feeding direction of the cable conductor.
Further, the three-layer co-extrusion machine head of the double-color quarter insulated cable further comprises a core rod locking spring marble arranged in the core rod locking flange, and a die sleeve seat locking flange connecting hole which is arranged at the front end of the fourth cylinder and is used for being connected with the core rod locking flange.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention skillfully adopts a three-layer shunt, an inner mold core, a middle mold core and an inner layer core are arranged in a shell, a double-color insulating layer which is alternately crossed is formed by feeding and co-extrusion through an insulating material A feeding runner and an insulating material B feeding runner, and a sheath which is wrapped outside the double-color insulating layer is formed by feeding and co-extrusion through a sheath feeding runner; therefore, one-step molding of the bicolor four-way insulation wire core and the sheath can be realized, the processing technology is simplified, and the technical blank of integrally molding the bicolor insulation layer and the sheath in the cable field is filled.
(2) The double-color insulated cable is simple in structure, the wrapping areas of the insulating material A and the insulating material B are limited by the sizes and the positions of the feeding flow channels of the insulating material A and the feeding flow channels of the insulating material B, and the manufactured double-color insulated cable is not easy to imitate.
(3) The invention skillfully sets the core rod deflection adjusting bolt, the die sleeve seat deflection adjusting bolt and the core rod locking spring marble to ensure that the thickness of the double-color insulating layer and the sheath wrapped on the cable conductor is uniform, and effectively solves the problem that the cable is weak in insulation due to inconsistent thickness of the double-color insulating layer and the sheath.
(4) According to the invention, the matched spherical surface is skillfully arranged in the third conical material guiding part, the front end of the core rod is arranged into a spherical shape, and spherical sliding is provided for tail eccentric adjustment, so that adjustment of the inner mold core, the middle mold core and the inner layer core is realized, and even thickness extrusion of the bicolor insulating layer is further ensured.
In conclusion, the invention has the advantages of simple structure, simplified processing technology, improved quality of finished products and the like, and has high practical value and popularization value in the technical field of wire and cable production and processing.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope of protection, and other related drawings may be obtained according to these drawings without the need of inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a schematic perspective view (one) of the present invention.
Fig. 3 is a schematic perspective view (ii) of the present invention.
FIG. 4 is a schematic cross-sectional view of an outer layer shunt of the present invention.
Fig. 5 is a schematic perspective view of an outer shunt according to the present invention.
Fig. 6 is a schematic perspective view of an outer shunt according to the present invention.
FIG. 7 is a schematic cross-sectional view of a middle layer shunt of the present invention.
Fig. 8 is a schematic perspective view of a middle layer shunt according to the present invention.
Fig. 9 is a schematic perspective view of a middle layer shunt according to the present invention (ii).
Fig. 10 is a schematic perspective view of an inner layer shunt according to the present invention.
Fig. 11 is a schematic perspective view of an inner layer splitter according to the present invention (ii).
FIG. 12 is a schematic cross-sectional view of an inner layer shunt of the present invention.
Fig. 13 is a schematic perspective view (one) of the casing of the present invention.
Fig. 14 is a schematic perspective view (two) of the housing of the present invention.
Fig. 15 is a schematic cross-sectional view of a housing of the present invention.
Fig. 16 is a perspective view of the inner mold core, the middle mold core and the inner core of the present invention.
Fig. 17 is a schematic cross-sectional view of the inner core, middle core and inner core of the present invention.
Fig. 18 is a schematic perspective view of a mandrel of the present invention.
FIG. 19 is a schematic cross-sectional view of a mandrel of the present invention.
Fig. 20 is a schematic cross-sectional view of a cable of the present invention.
In the above figures, the reference numerals correspond to the component names as follows:
1-shell, 2-outer layer shunt, 3-middle layer shunt, 4-inner layer shunt, 5-core rod, 6-core rod locking flange, 7-core rod locking spring marble, 8-core rod deviation adjusting bolt, 9-matched sphere, 10-die sleeve seat deviation adjusting bolt, 11-inner die core, 12-middle die core, 13-inner layer core, 14-die sleeve adjusting coil, 15-die sleeve seat, 16-die sleeve seat locking flange, 17-insulation B feed inlet, 18-insulation A feed inlet, 19-sheath feed inlet, 101-first cylinder, 102-second cylinder, 103-third cylinder, 104-fourth cylinder, 105-first through hole, 108-die sleeve seat deviation adjusting threaded hole, 110-die sleeve seat locking flange connecting hole, 111-second circular hole, 112-third round hole, 113-seventh conical hole, 114-cylindrical diagonal slot, 121-fifth conical hole, 122-sixth conical hole, 131-first round hole, 132-fourth conical hole, 201-first conical pillar, 202-fifth cylindrical, 203-eighth conical hole, 204-first arc slot, 206-third through hole, 207-first insulating material flow slot, 208-second insulating material flow slot, 209-first resistor, 210-first conical guide, 301-sixth cylindrical, 302-second conical pillar, 303-fourth through hole, 304-third insulating material flow slot, 305-fourth insulating material flow slot, 306-fifth insulating material flow slot, 307-fifth through hole, 308-sixth through hole, 309-seventh through hole, 310-second tapered lead portion, 401-seventh cylinder, 402-eighth cylinder, 403-third tapered cylinder, 404-stepped through hole, 405-mandrel offset threaded hole, 406-sixth insulation flow through slot, 407-seventh insulation flow through slot, 408-second resistor, 409-third tapered lead portion, 410-eighth insulation flow through slot, 501-mandrel head, 502-mandrel cylinder, 503-fifth circular hole, 504-sixth circular hole, 1051-first tapered hole, 1052-second tapered hole, 1053-third tapered hole, 1054-seventh circular hole, 3031-ninth tapered hole, 3032-tenth tapered hole, 3033-fourth circular hole.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Examples
As shown in fig. 1 to 20, the present embodiment provides a three-layer co-extruder head for a bicolor quarter-insulation cable, and it should be noted that the terms of "first", "second", and the like in the present embodiment are only used to distinguish similar components, and are not to be construed as limiting the protection scope specifically. In the present embodiment, the azimuthal terms such as "bottom", "top", "peripheral edge", "center" and the like are described based on the drawings. Moreover, the structure and the structure of the product protected by the invention can be designed according to the corresponding dimension of the cable core, and are not repeated here.
In this embodiment, the three-layer coextrusion head comprises a casing 1 with a built-in tapered hollow, a tapered hollow inner and outer surface edge of the casing 1 inserted in a cable conductor feeding direction, an outer layer shunt 2 with a built-in tapered hollow, a tapered hollow inner and outer surface edge of the outer layer shunt 2 inserted in a cable conductor feeding direction, a middle layer shunt 3 with a built-in tapered hollow, a core rod 5 inserted in a cable conductor feeding direction, a tapered hollow inner and outer surface edge of the middle layer shunt 3, a tapered hollow inner layer shunt 4 with a built-in tapered hollow, a hollow through which a built-in cable conductor penetrates, and a tapered hollow disposed through the inner layer shunt 4, the inner die core 11, the middle die core 12 and the inner die core 13 are sequentially sleeved in the conical hollow of the shell 1, are respectively provided with a hollow inner die core 11, a hollow middle die core 12 and an inner die core 13 along the feeding direction of the cable conductor, are fixedly connected with the front end of the shell 1, are respectively provided with a hollow die sleeve seat 15 along the feeding direction of the cable conductor and are used for limiting and fixing the inner die core 13 in the conical hollow of the shell 1, sequentially penetrate through the shell 1, the outer die splitter 2 and the middle die splitter 3, are respectively used for uniformly dividing an insulating material A into two and conveying the insulating material A to the relative position between the inner die core 11 and the middle die core 12, are respectively extruded on the opposite outer edges of the cable conductor by the inner die core 11, sequentially penetrate through the outer die splitter 2 and the middle die splitter 3, are respectively used for uniformly dividing the insulating material B into two and conveying the insulating material B between the inner die core 11 and the middle die core 12, and an insulating material B feeding runner which is extruded on the cable conductor by an inner die 11 and is crossed with the insulating material A for wrapping the cable conductor is arranged, a sheath feeding runner which is arranged through the shell 1 and is used for sheath feeding and is extruded on the cable conductor wrapped with the insulating material A and the insulating material B by an inner die 12 is sleeved on the rear end edge of the core rod 5 and is used for fixing the core rod locking flange 6 on the inner layer shunt 4, a die sleeve seat locking flange 16 which is fixed on the front end of the shell 1 and is sleeved on the outer edge of a die sleeve seat 15, a hollow die sleeve adjusting coil 14 which is arranged in the die sleeve seat 15 and is internally provided with a plurality of core rod deflection adjusting bolts 8 which are arranged through the inner layer shunt 4 at equal intervals and are used for adjusting the axle center of the core rod 5, the annular die sleeve seat deflection adjusting bolts 10 are uniformly arranged at intervals and penetrate through the shell 1, are used for adjusting the axle center of the die sleeve seat 15, are arranged in a seventh conical hole 113, a third circular hole 112 and a second circular hole 111 in the inner die core 11 along the feeding direction of a cable conductor, are arranged in a cylindrical inclined cutting groove 114 communicated with the seventh conical hole 113 in the inner die core 11, are arranged in a sixth conical hole 122 and a fifth conical hole 121 in the inner die core 12 along the feeding direction of the cable conductor, are arranged in a fourth conical hole 132 and a first circular hole 131 in the inner die core 13 along the feeding direction of the cable conductor, are arranged in a mandrel locking spring marble 7 in the mandrel locking flange 6, and are arranged at the front end of the fourth cylinder 104, and are used for being connected with the mandrel locking flange 6. The inner die core 11 is in extrusion contact with the front end of the core rod 5, the middle die core 12 is in extrusion contact with the front end of the middle layer diverter 3, and the shell 1 is fixedly connected with the outer layer diverter 2, the outer layer diverter 2 is fixedly connected with the middle layer diverter 3, and the middle layer diverter 3 is fixedly connected with the inner layer diverter 4.
The embodiment discloses a specific structure of a casing 1, as shown in fig. 13 to 15, which includes a first cylinder 101, a second cylinder 102, a third cylinder 103 and a fourth cylinder 104 that are arranged along a feeding direction of a cable conductor and are integrally formed, a plurality of die sleeve seat deviation adjusting threaded holes 108 that are formed on the fourth cylinder 104 and are in one-to-one correspondence with the die sleeve seat deviation adjusting bolts 10, and a first through hole 105 that penetrates the first cylinder 101, the second cylinder 102, the third cylinder 103 and the fourth cylinder 104 in sequence and is used for installing an outer layer shunt 3, an inner die core 11, an inner die core 12, an inner die core 13 and a die sleeve seat 15 and is communicated with the die sleeve seat deviation adjusting threaded holes 108. Wherein the first through hole 105 includes a first tapered hole 1051 penetrating through the first cylinder 101, the second cylinder 102 and the third cylinder 103 in this order, a second tapered hole 1052 communicating with the first tapered hole 1051 in the cable conductor feeding direction, a third tapered hole 1053 communicating with the second tapered hole 1052 in the cable conductor feeding direction, and a seventh circular hole 1054 communicating with the third tapered hole 1053 for mounting the die holder 15; the outer shunt 2 tapers to match the first tapered bore 1051.
The embodiment discloses a specific structure of the outer layer shunt 2, as shown in fig. 4 to 6, which includes a fifth cylinder 202, a first conical cylinder 201 and a first conical guide portion 210 that are sequentially arranged along the feeding direction of the cable conductor and are integrally formed, and an eighth conical hole 203 that is sequentially arranged through the first conical cylinder 201, the fifth cylinder 202 and the first conical guide portion 210 and is in taper match with the outer edge of the middle layer shunt 3; the first tapered column 201 and the first tapered guiding portion 210 are sleeved in the first tapered hole 1051.
Meanwhile, this embodiment also discloses a specific structure of the middle-layer shunt 3, as shown in fig. 7 to 9, which includes a sixth cylinder 301, a second tapered column 302, and a second tapered guide portion 310 that are sequentially disposed along the feeding direction of the cable conductor and are integrally formed, and a fourth hole 303 that is disposed through the sixth cylinder 301, the second tapered column 302, and the second tapered guide portion 310 and is taper-matched with the outer edge of the inner-layer shunt 4; the front end of the second tapered guiding portion 310 is extruded with the rear end of the middle mold core 12, and has the same diameter. Wherein the fourth through hole 303 includes a ninth tapered hole 3031, a tenth tapered hole 3032, and a fourth circular hole 3033 sequentially provided in the feeding direction of the cable conductor; the inner shunt 4 is disposed within the ninth tapered bore 3031.
Furthermore, this embodiment also discloses an inner-layer shunt 4, as shown in fig. 10 to 12, which includes a seventh cylinder 401, an eighth cylinder 402, a third cone column 403 and a third cone guiding portion 409 that are sequentially disposed along the feeding direction of the cable conductor and are integrally formed, a stepped through hole 404 for sleeving the mandrel 5, and a mating spherical surface 9 that is communicated with the front end of the stepped through hole 404, is in pressing contact with the front end of the mandrel 5, and is opened in the third cone guiding portion 409, which sequentially penetrates through the seventh cylinder 401, the eighth cylinder 402, the third cone column 403 and the third cone guiding portion 409; the seventh cylinder 401 is provided with a plurality of mandrel deflection adjusting threaded holes 405 which are matched with the mandrel deflection adjusting bolts 8 and adjust the central axis of the mandrel 5.
In this embodiment, the mandrel 5 includes a mandrel stem 502 sleeved in the mandrel locking flange 6 and the stepped through hole 404, a mandrel head 501 disposed at the front end of the mandrel stem 502 and respectively extrusion-matched with the mating spherical surface 9 and the inner die core 11, and a fifth circular hole 503 formed in the mandrel stem 502 and the mandrel head 501 along the feeding direction of the cable conductor and used for the cable conductor to pass through.
In this embodiment, in order to achieve that the insulating material a and the insulating material B are uniformly distributed and alternately wrapped on the cable conductor in a crossing manner, an insulating material a feeding flow channel and an insulating material B feeding flow channel are ingeniously arranged. The insulating material a feeding flow passage includes an insulating a feeding port 18 disposed through the fifth cylinder 202 and communicating with the eighth tapered hole 203, a third insulating material flow channel 304 disposed on the second tapered cylinder 302, one end of which corresponds to the position of the insulating a feeding port 18 and is used for receiving the insulating material a fed from the insulating a feeding port 18, a seventh through hole 309 disposed on the second tapered cylinder 302, one end of which communicates with the other end of the third insulating material flow channel 304, a fourth insulating material flow channel 305 and a fifth insulating material flow channel 306 for uniformly dividing the insulating material a into two opposite positions to the tapered cylinder 302, a sixth through hole 308 disposed through the second tapered cylinder 302 and communicating with the ninth tapered hole 3031 and communicating with the other end of the fourth insulating material flow channel 305, a seventh through hole 309 disposed on the third tapered cylinder 403 and communicating with the other end of the fifth insulating material flow channel 306, and a seventh through hole 309 disposed on the third tapered cylinder 403 and corresponding to the sixth through hole 308 and corresponding to the position of the seventh through hole 308 and corresponding to the seventh through hole 309 for receiving the insulating material a.
In this embodiment, the first insulating material a-average component and the second insulating material a-average component have the same structure and are oppositely disposed on the third tapered column 403. The first insulating material a uniformity component includes a sixth insulating material flow channel 406 formed on the third tapered column 403 and having one end connected to the sixth through hole 308, a seventh insulating material flow channel 407 formed on the third tapered column 403 and having one end connected to the other end of the sixth insulating material flow channel 406 and the other end matched with the third tapered material guiding portion 409, and a second resistor 408 formed on the third tapered column 403 and configured to uniformly divide the seventh insulating material flow channel 407 into two. In addition, the sixth through hole 308 coincides with the hole mandrel of the seventh through hole 309.
In use, insulation a enters from insulation a feed 18 and is split equally through third insulation flow channel 304 into two for delivery to fourth insulation flow channel 305 and fifth insulation flow channel 306; wherein, the insulation a flowing through the fourth insulation material flow channel 305 to the sixth insulation material flow channel 406 of the first insulation material a uniform component through the sixth through hole 308 is finally injected from the third cone-shaped guiding portion 409 between the inner mold core 11 and the middle mold core 12; similarly, the insulation a flowing through the fifth insulation flow channel 306 to the sixth insulation flow channel 406 of the second insulation a uniformity component through the seventh through hole 309 is finally injected from the third taper guide 409 between the inner mold core 11 and the middle mold core 12. By the above scheme, the insulation A is divided into two parts and is oppositely wrapped on the cable conductor.
In this embodiment, the insulating material B feeding flow path includes an insulating material B feeding port 17 disposed through the first cylinder 101 and communicating with the first tapered hole 1051, a first insulating material flow channel 207 disposed on the fifth cylinder 202 and having one end corresponding to the position of the insulating material B feeding port 17, a third through hole 206 disposed through the fifth cylinder 202 and communicating with the eighth tapered hole 203, a fifth through hole 307 disposed through the second tapered column 302 and corresponding to and overlapping the third through hole 206, and an eighth insulating material flow channel 410 disposed on the third tapered column 403 and communicating with the fifth through hole 307 for dividing the insulating material B into two and conveying it to the third tapered guide 409.
In use, insulation B enters from insulation B feed port 17, flows through first insulation flow channel 207, third through hole 206, and fifth through hole 307 in sequence, and is finally split equally into two and delivered to third tapered guide 409. Wherein, the insulation material B conveyed by the eighth insulation flow through the slot 410 and the insulation material a conveyed by the seventh insulation flow through the slot 407 are alternately wrapped around the cable conductor, and the finished product is shown in fig. 20.
In addition, the sheath feeding flow channel of the present embodiment is used for sheath feeding and wraps the outside of the bicolor insulating sheath, and includes a sheath feeding port 19 that penetrates through the first cylinder 101 and is communicated with the first tapered hole 1051, a second insulating material flow channel 208 that is provided on the first tapered column 201 and is correspondingly matched with the sheath feeding port 19, and a first resistor 209 that is provided on the first tapered column 201 and is used for uniformly conveying sheath feeding to the space between the middle mold core 12 and the inner layer core 13. Sheath feeding enters from a sheath feeding hole 19 and is uniformly conveyed between the middle die core 12 and the inner die core 13, and the double-color insulating sleeve is wrapped under the extrusion action of the middle die core 12.
In conclusion, the invention fills the technical blank of integrally forming the double-color insulating layer and the sheath in the cable field, and simplifies the processing technology. Compared with the prior art, the method has outstanding substantive characteristics and remarkable progress, and has wide market prospect in the technical field of cable production and processing.
The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention, but all changes made by adopting the design principle of the present invention and performing non-creative work on the basis thereof shall fall within the scope of the present invention.
Claims (8)
1. The utility model provides a three-layer coextrusion aircraft nose of bicolor quadric insulation cable, its characterized in that, including built-in toper hollow casing (1), insert along the cable conductor feed direction toper cavity of casing (1) in, the surface edge with the toper hollow inner wall taper of casing (1) matches, and just embeds toper hollow outer shunt (2), inserts along the cable conductor feed direction the toper cavity of outer shunt (2) in, the surface edge with the toper hollow inner wall taper of outer shunt (2) matches, just embeds toper hollow middle level shunt (3), inserts along the cable conductor feed direction the toper cavity of middle level shunt (3) in, the surface edge with the toper hollow inner wall taper of middle level shunt (3) matches, just embeds toper hollow inner layer shunt (4), embeds the cavity that the cable conductor runs through, just runs through core rod (5) that the toper cavity of inner layer shunt (4) set up, in the toper cavity of casing (1) after set gradually, just all be equipped with hollow centre core (11) along the cable conductor feed direction, 12) and centre core (13) and inner core (13) and the fixed in proper order, the centre core (13) and the end of casing (1) are used for setting up in proper order in the direction of cavity core (13) and casing (1), the fixed seat (15) is advanced in the direction of setting up in the centre layer (1) in order, an outer layer shunt (2) and a middle layer shunt (3) are arranged, an insulating material A feeding runner which is used for equally dividing an insulating material A into two and conveying the insulating material A to a relative position between an inner mould core (11) and an intermediate mould core (12) and is extruded on opposite outer edges of a cable conductor by the inner mould core (11) is sequentially arranged through the outer layer shunt (2) and the middle layer shunt (3), an insulating material B feeding runner which is used for equally dividing the insulating material B into two and conveying the insulating material B between the inner mould core (11) and the intermediate mould core (12) and is extruded on the cable conductor by the inner mould core (11) and is crosswise distributed with the insulating material A to wrap the cable conductor, and a sheath feeding runner which is arranged through the shell (1) and is used for sheath feeding and is extruded on the cable conductor wrapped with the insulating material A and the insulating material B by the intermediate mould core (12);
the inner die core (11) is in extrusion contact with the front end of the core rod (5), and the middle die core (12) is in extrusion contact with the front end of the middle-layer shunt (3);
the shell (1) is fixedly connected with the outer layer shunt (2), the outer layer shunt (2) is fixedly connected with the middle layer shunt (3), and the middle layer shunt (3) is fixedly connected with the inner layer shunt (4);
the die sleeve seat locking flange (16) is sleeved on the rear end edge of the core rod (5) and used for being fixed on the inner-layer shunt (4), the die sleeve seat locking flange (16) is fixed at the front end of the shell (1) and sleeved on the outer edge of the die sleeve seat (15), and the hollow die sleeve adjusting wire ring (14) is arranged in the die sleeve seat (15) and internally provided with a cable conductor with a sheath in a penetrating manner;
the die sleeve seat deflection adjusting device further comprises a plurality of core rod deflection adjusting bolts (8) which are arranged through the inner-layer shunt (4) at equal intervals and used for adjusting the axle center of the core rod (5), and a plurality of die sleeve seat deflection adjusting bolts (10) which are arranged through the machine shell (1) at equal intervals and used for adjusting the axle center of the die sleeve seat (15).
2. The three-layer co-extrusion machine head of the bicolor quarter-insulation cable according to claim 1, wherein the machine shell (1) comprises a first cylinder (101), a second cylinder (102), a third cylinder (103) and a fourth cylinder (104) which are arranged along the feeding direction of the cable conductor and are integrally formed, a plurality of die sleeve seat deviation adjusting threaded holes (108) which are formed on the fourth cylinder (104) and are in one-to-one correspondence with the die sleeve seat deviation adjusting bolts (10), and a first through hole (105) which sequentially penetrates through the first cylinder (101), the second cylinder (102), the third cylinder (103) and the fourth cylinder (104) and is used for installing a middle-layer shunt (3), an inner-mold core (11), a middle-mold core (12), an inner-layer core (13) and a die sleeve seat (15) and is communicated with the die sleeve seat deviation adjusting threaded holes (108);
the first through hole (105) comprises a first conical hole (1051) penetrating through the first cylinder (101), the second cylinder (102) and the third cylinder (103) in sequence, a second conical hole (1052) communicated with the first conical hole (1051) along the feeding direction of the cable conductor, a third conical hole (1053) communicated with the second conical hole (1052) along the feeding direction of the cable conductor, and a seventh circular hole (1054) communicated with the third conical hole (1053) and used for installing a die sleeve seat (15); the outer layer shunt (2) is in taper matching with the first taper hole (1051);
the insulating material B feeding flow passage comprises an insulating material B feeding port (17) which penetrates through the first cylinder (101) and is communicated with the first conical hole (1051);
the sheath feed flow path includes a sheath feed port (19) disposed through the first cylinder (101) and in communication with the first tapered bore (1051).
3. The three-layer co-extruder head of a bicolor quarter-insulation cable according to claim 2, characterized in that the outer layer shunt (2) comprises a fifth cylinder (202), a first conical column (201) and a first conical material guiding part (210) which are sequentially arranged along the feeding direction of the cable conductor and are integrally formed, and an eighth conical hole (203) which is sequentially arranged through the first conical column (201), the fifth cylinder (202) and the first conical material guiding part (210) and is in taper fit with the outer edge of the middle layer shunt (3); the first conical column (201) and the first conical material guiding part (210) are sleeved in the first conical hole (1051);
the insulating material A feeding flow passage comprises an insulating material A feeding port (18) which penetrates through the fifth cylinder (202) and is communicated with an eighth conical hole (203);
the insulating material B feeding flow passage further comprises a first insulating material flow passage groove (207) which is formed in the fifth cylinder (202) and one end of which corresponds to the position of the insulating material B feeding port (17), and a third through hole (206) which penetrates through the fifth cylinder (202) and is communicated with the eighth conical hole (203);
the sheath feeding flow channel further comprises a second insulating material flow channel (208) which is arranged on the first conical column (201) and is correspondingly matched with the sheath feeding hole (19), and a first resistor (209) which is arranged on the first conical column (201) and is used for uniformly conveying sheath feeding to a position between the middle die core (12) and the inner die core (13).
4. A three-layer co-extruder head of a bicolor quarter-insulation cable according to claim 3, characterized in that the middle layer diverter (3) comprises a sixth cylinder (301), a second conical column (302) and a second conical guide part (310) which are arranged in sequence along the feeding direction of the cable conductor and are integrally formed, and a fourth through hole (303) which is arranged through the sixth cylinder (301), the second conical column (302) and the second conical guide part (310) and is in taper fit with the outer edge of the inner layer diverter (4); the front end of the second conical material guiding part (310) is extruded with the rear end of the middle die core (12) and has the same diameter;
the fourth through hole (303) comprises a ninth conical hole (3031), a tenth conical hole (3032) and a fourth circular hole (3033) which are sequentially arranged along the feeding direction of the cable conductor; the inner layer shunt (4) is arranged in the ninth conical hole (3031);
the insulating material A feeding flow passage further comprises a third insulating material flow passage (304) which is arranged on the second conical column (302) and one end of which corresponds to the position of the insulating material A feeding hole (18) and is used for receiving the insulating material A fed by the insulating material A feeding hole (18), a fourth insulating material flow passage (305) and a fifth insulating material flow passage (306) which are arranged on the second conical column (302) and one end of which is communicated with the other end of the third insulating material flow passage (304), a fourth insulating material flow passage (305) and a fifth insulating material flow passage (306) which are used for uniformly dividing the insulating material A into two and conveying the insulating material A to the opposite positions of the second conical column (302), a sixth through hole (308) which penetrates through the second conical column (302) and is communicated with a ninth conical hole (3031) and is communicated with the other end of the fourth insulating material flow passage (305), and a seventh through hole (309) which penetrates through the second conical column (302) and is communicated with the ninth conical hole (3031) and is communicated with the other end of the fifth insulating material flow passage (306); the sixth through hole (308) coincides with the hole mandrel of the seventh through hole (309);
the insulating material B feeding flow passage further comprises a fifth through hole (307) which penetrates through the second conical column (302) and corresponds to the third through hole (206) in position and coincides with the third through hole.
5. The three-layer co-extrusion head of a bicolor quarter-insulation cable according to claim 4, wherein the inner-layer shunt (4) comprises a seventh cylinder (401), an eighth cylinder (402), a third conical cylinder (403) and a third conical guide part (409) which are sequentially arranged along the feeding direction of the cable conductor and are integrally formed, a stepped through hole (404) which is used for sleeving a core rod (5) and a matching spherical surface (9) which is communicated with the front end of the stepped through hole (404), is used for being in extrusion contact with the front end of the core rod (5) and is arranged in the third conical guide part (409) in a penetrating way through the seventh cylinder (401), the eighth cylinder (402), the third conical cylinder (403) and the third conical guide part (409) in sequence; a plurality of mandrel deflection adjusting threaded holes (405) which are matched with the mandrel deflection adjusting bolts (8) and are used for adjusting the central axis of the mandrel (5) are formed in the seventh cylinder (401);
the insulating material A feeding flow passage further comprises a first insulating material A uniform distribution component which is arranged on the third conical column (403) and corresponds to the position of the sixth through hole (308) and is used for receiving the insulating material A conveyed by the sixth through hole (308), and a second insulating material A uniform distribution component which is arranged on the third conical column (403) and corresponds to the position of the seventh through hole (309) and is used for receiving the insulating material A conveyed by the seventh through hole (309); the first insulating material A uniform distribution component and the two insulating material A uniform distribution components have the same structure and are oppositely arranged on a third conical column (403);
the first insulating material A uniform distribution component comprises a sixth insulating material flow groove (406) which is formed on a third conical column (403) and one end of which is communicated with a sixth through hole (308), a seventh insulating material flow groove (407) which is formed on the third conical column (403) and one end of which is communicated with the other end of the sixth insulating material flow groove (406) and the other end of which is matched with a third conical material guide part (409) and is used for uniformly conveying the insulating material A to a position between the inner mold core (11) and the middle mold core (12), and a second resistor (408) which is formed on the third conical column (403) and is used for uniformly dividing the seventh insulating material flow groove (407) into two parts;
the insulating material B feeding flow passage further comprises an eighth insulating material flow passage groove (410) which is formed in the third conical column (403) and communicated with the fifth through hole (307) and used for equally dividing the insulating material B into two parts and conveying the insulating material B to the third conical material guiding part (409); the eighth insulation material B conveyed by the slot (410) is crossed with the seventh insulation material a conveyed by the slot (407) to wrap the cable conductor at intervals.
6. The three-layer co-extrusion head of the bicolor quarter insulated cable according to claim 5, wherein the core rod (5) comprises a core rod column (502) sleeved in the core rod locking flange (6) and the stepped through hole (404), a core rod head (501) arranged at the front end of the core rod column (502) and respectively matched with the matched spherical surface (9) and the inner mold core (11) in an extrusion mode, and a fifth round hole (503) formed in the core rod column (502) and the core rod head (501) along the feeding direction of the cable conductor and used for the cable conductor to penetrate.
7. The three-layer coextrusion head according to claim 1, further comprising a seventh tapered hole (113), a third circular hole (112), and a second circular hole (111) formed in the inner core (11) in a cable conductor feeding direction, a cylindrical diagonal groove (114) formed in the inner core (11) in communication with the seventh tapered hole (113), a sixth tapered hole (122) and a fifth tapered hole (121) formed in the inner core (12) in the cable conductor feeding direction, and a fourth tapered hole (132) and a first circular hole (131) formed in the inner core (13) in the cable conductor feeding direction.
8. The three-layer co-extruder head of a bicolor quarter insulated cable of claim 2, further comprising a mandrel locking spring marble (7) arranged in the mandrel locking flange (6), and a die sleeve seat locking flange connecting hole (110) arranged at the front end of the fourth cylinder (104) and used for being connected with the mandrel locking flange (6).
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| CN110181793A (en) * | 2019-07-03 | 2019-08-30 | 段文锋 | A kind of bilayer two-wire system electric wire extrusion head |
| CN110271162A (en) * | 2019-07-03 | 2019-09-24 | 安徽普瑞斯电工机械有限公司 | Double-layer bi-color cable co-extruding machine head |
| CN110509523B (en) * | 2019-09-26 | 2024-03-19 | 汕头经济特区雄伟塑料包装材料有限公司 | Die head mounting structure with adjustable thickness for film production line |
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| CN111300794A (en) * | 2020-03-09 | 2020-06-19 | 常州市美华电器有限公司 | Double-color cable three-layer co-extrusion device |
| CN114454458A (en) * | 2022-02-14 | 2022-05-10 | 江西华缆科技有限公司 | Three-layer co-extrusion machine head for low-smoke halogen-free cable |
| CN114474668B (en) * | 2022-03-03 | 2024-04-05 | 浙江元通线缆制造有限公司 | Three-layer co-extrusion machine head, production process thereof and cable produced by adopting process |
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