CN109036731B - Plastic extrusion die for cable production - Google Patents
Plastic extrusion die for cable production Download PDFInfo
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- CN109036731B CN109036731B CN201810833693.0A CN201810833693A CN109036731B CN 109036731 B CN109036731 B CN 109036731B CN 201810833693 A CN201810833693 A CN 201810833693A CN 109036731 B CN109036731 B CN 109036731B
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- die
- fixedly connected
- annular slide
- plastic
- cable production
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the field of cable production, in particular to a plastic extrusion die for cable production. The invention aims to solve the technical problem of providing a plastic extrusion die for cable production, which can avoid incomplete combination of plastic and core wires and prevent the temperature of a machine head from being reduced. A plastic extrusion die for cable production comprises a die sleeve cylinder, a die core cylinder, a machine head, an annular slide rail and an annular slide block; a die sleeve is interior to be seted up in the die sleeve cylinder for accepting plastics, and the die sleeve is interior to be used for pouring into fused plastics, has seted up the die core interior on the die core cylinder for holding the heart yearn of dress electric wire, and the die core interior is used for running through the heart yearn of electric wire, is used for wrapping up fused plastics's aircraft nose rigid coupling in the die core cylinder, and with the interior intercommunication of die core interior to with the interior cone joint of die sleeve. The invention achieves the effects of avoiding incomplete combination of plastics and core wires and preventing the temperature of the machine head from being reduced.
Description
Technical Field
The invention relates to the field of cable production, in particular to a plastic extrusion die for cable production.
Background
The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. The quality of the plastic wire is related to various factors such as the quality of the plastic, the performance of an extruder, the extrusion temperature, the tension and the speed of a take-up and pay-off wire, the preheating of a core wire, the cooling of the extruded plastic, the design of a machine head mold and the like, and the most important factor is a device-mold for final shaping in the extrusion process of the plastic wire. The geometric shape, the mechanism design and the size, the temperature, the pressure and the like of the die directly determine the success or failure of the wire processing. Therefore, the mold design, matching and heat preservation measures of any plastic electric wire product have been highly regarded. Ordinary extrusion die is when the shaping electric wire, plastics and heart yearn combine incompletely, phenomenons such as bubble appear easily, it is unstable to lead to the outer plastics of fashioned electric wire, thereby electric leakage easily, and the die sleeve outermost end stretches out the length overlength of aircraft nose portion, can influence heat transfer effect, the temperature that leads to die sleeve mouth plastics receives the influence, thereby the quality is extruded in the influence, the electric wire that forms is after being wrapped up by melting plastics, not fast cooling can influence the finished product quality equally, consequently need urgent research and development one kind can avoid plastics and heart yearn to combine incompletely and prevent that aircraft nose temperature from reducing to use plastics extrusion die for cable manufacture.
Disclosure of Invention
The invention aims to overcome the defects that when a common extrusion die is used for forming an electric wire, the combination of plastics and a core wire is incomplete, the length of the outermost end of a die sleeve extending out of a handpiece part is too long, so that the heat transfer effect is influenced, and the quality of a finished product is also influenced when the formed electric wire is not cooled quickly after being wrapped by molten plastics.
The invention is achieved by the following specific technical means:
A plastic extrusion die for cable production comprises a die sleeve cylinder, a die core cylinder, a machine head, an annular slide rail and an annular slide block; a die sleeve inner cone is arranged in a die sleeve cylinder for bearing the plastic, the die sleeve inner cone is used for pouring the molten plastic, a die core inner cone is arranged on a die core cylinder for bearing a core wire of the electric wire, the die core inner cone is used for penetrating the core wire of the electric wire, and a machine head for wrapping the molten plastic is fixedly connected to the die core cylinder, is communicated with the inside of the die core inner cone and is clamped with the die sleeve inner cone; the annular slide rail is fixedly connected to the outer top surface of the die sleeve cylinder, and the die sleeve cylinder is connected with the annular slide rail in a sliding mode through the annular slide block.
Furthermore, the plastic extrusion die for cable production also comprises a mounting plate, a heat insulation frame, an electrode plate and an electric heating wire; the mounting plate is fixedly connected to the outer wall of the annular slide rail, and the top and the bottom of the annular slide rail are fixedly connected with the mounting plate; the heat insulation frame is fixedly connected to the bottom of the mounting plate and is positioned above the die sleeve cylinder; the electrode plate is embedded in the inner wall of the heat insulation plate; the electric heating wire is fixedly connected with the electrode plate and is electrified with the electrode plate.
Furthermore, the plastic extrusion die for cable production also comprises a cooling pipe, a mounting rack, a motor, a blowing fan blade and a grid; the cooling pipe is fixedly connected to one side part of the mounting plate, which is far away from the annular slide rail; the mounting rack is fixedly connected to the inner wall of the cooling pipe, and the motor is fixedly connected to the mounting rack; the blowing fan blade is in transmission connection with the output end of the motor; the grid is fixedly connected with the pipe orifice at the bottom of the cooling pipe.
Furthermore, the plastic extrusion die for cable production also comprises a separation net; the separation net is fixedly connected with the top pipe orifice of the cooling pipe.
Furthermore, the plastic extrusion die for cable production also comprises a material receiving groove body; the material receiving groove body is fixedly connected with the mounting plate at the bottom of the annular slide rail.
Furthermore, the plastic extrusion die for cable production also comprises a heat insulation plate; the heat insulation plate is fixedly connected to the mounting plate and is positioned between the cooling pipe and the heat insulation frame.
Compared with the prior art, the invention has the following beneficial effects:
The invention achieves the effects of avoiding incomplete combination of plastics and core wires and preventing the temperature of the machine head from being reduced. The die sleeve cylinder is rotated by matching the annular slide rail with the annular slide block, so that the molten plastic can be uniformly sleeved on the core wire, thereby the core wire and the plastic can be completely combined, the electric heating wire can generate a large amount of heat, the heat is transferred to the die sleeve cylinder, the die sleeve cylinder transfers the heat to the machine head, thereby avoiding the semi-solidification of the molten plastic caused by the temperature reduction of the machine head, the cooling pipe can be matched with the blowing fan blade to generate a large amount of wind to rapidly cool the formed plastic electric wire, thereby improving the molding efficiency of the plastic electric wire, improving the quality of the plastic electric wire, preventing the plastic electric wire from aging, the arrangement of the separation net can prevent dust from blowing to the plastic electric wire along with the cooling pipe, the arrangement of the material receiving groove body can receive the plastic leaked from the machine head, the heat generated by the electric heating wire can be isolated through the heat insulation plate, and the normal operation of the motor is prevented from being influenced.
Drawings
Fig. 1 is a first front view structure diagram of the present invention.
Fig. 2 is a second front view structure diagram of the present invention.
Fig. 3 is a third schematic view of the present invention.
Fig. 4 is a schematic diagram of a fourth front view structure according to the present invention.
Fig. 5 is a schematic view of a fifth front view structure according to the present invention.
Fig. 6 is a schematic diagram of a sixth front view structure according to the present invention.
The labels in the figures are: 1-mold sleeve cylinder, 2-mold sleeve inner cone, 3-mold core cylinder, 4-mold core inner cone, 5-machine head, 6-annular slide rail, 7-annular slide block, 8-mounting plate, 9-heat insulation frame, 10-electrode plate, 11-electric heating wire, 12-cooling pipe, 13-mounting frame, 14-motor, 15-blowing fan blade, 16-grid, 17-separation net, 18-material receiving tank body and 19-heat insulation plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
Examples
a plastic extrusion die for cable production is shown in figures 1-6 and comprises a die sleeve cylinder 1, a die core cylinder 3, a machine head 5, an annular slide rail 6 and an annular slide block 7; a die sleeve inner cone 2 is arranged in a die sleeve cylinder 1 for bearing plastics, the die sleeve inner cone 2 is used for pouring molten plastics, a die core inner cone 4 is arranged on a die core cylinder 3 for bearing a core wire of an electric wire, the die core inner cone 4 is used for penetrating the core wire of the electric wire, and a machine head 5 for wrapping the molten plastics is fixedly connected to the die core cylinder 3, is communicated with the interior of the die core inner cone 4 and is clamped with the die sleeve inner cone 2; the annular slide rail 6 is fixedly connected to the outer top surface of the die sleeve cylinder 1, and the die sleeve cylinder 1 is slidably connected with the annular slide rail 6 through the annular slide block 7.
The quality of the plastic electric wire product is related to various factors such as the quality of the plastic, the performance of an extruder, the extrusion temperature, the tension and the speed of a take-up and pay-off line, the preheating of a core wire, the cooling of the extruded plastic, the design of a die of a machine head 5 and the like, wherein the most important factor is the device-the die for final shaping in the extrusion process of the plastic electric wire. The geometric shape, the mechanism design and the size, the temperature, the pressure and the like of the die directly determine the success or failure of the wire processing. Therefore, the mold design, matching and heat preservation measures of any plastic electric wire product have been highly regarded. When the common extrusion die is used for forming the electric wire, the plastic and the core wire are not completely combined, the phenomena of air bubbles and the like are easily caused, the outer plastic of the formed electric wire is unstable, the electric leakage is easy, the length of the part, extending out of the machine head 5, of the outermost end of the die sleeve is too long, the heat transfer effect can be influenced, the temperature of the plastic at the opening of the die sleeve is influenced, the extrusion quality is influenced, the formed electric wire is wrapped by the molten plastic, the quality of a finished product can also be influenced due to the fact that the formed electric wire is not cooled quickly, and therefore the die can be used.
The workman heart yearn is through passing interior cone 4 of mold core, and run through away by aircraft nose 5, and the aircraft nose 5 of mold core cylinder 3 stretches into in the mould cover 2 in, and communicate rather than the in-connection, the workman pours the melting plastics into mould cover interior cone 2, form the plastic sheath through mould cover interior cone 2 and the cooperation of 3 outer walls of mold core cylinder and get into aircraft nose 5, thereby overlap the plastic sheath outside the heart yearn, thereby formed the plastics electric wire, and to avoid the plastics electric wire surface plastics inhomogeneous at the shaping in-process, so can fix annular slide rail 6 on the extruder, through annular slider 7 along annular slide rail 6 rotatory mould cover cylinder 1, make the melting plastics in the mould cover cylinder 1 can be even the cover on the heart yearn, in order to prevent its phenomenons such as bubble from appearing.
As shown in fig. 2, the plastic extrusion die for cable production further comprises a mounting plate 8, a heat insulation frame 9, an electrode plate 10 and an electric heating wire 11; the mounting plate 8 is fixedly connected to the outer wall of the annular slide rail 6, and the mounting plates 8 are fixedly connected to the top and the bottom of the annular slide rail 6; the heat insulation frame 9 is fixedly connected to the bottom of the mounting plate 8 and is positioned above the die sleeve cylinder 1; the electrode plate 10 is embedded in the inner wall of the heat insulation plate 19; the electric heating wire 11 is fixedly connected with the electrode plate 10 and is electrified with the electrode plate 10; in order to avoid 5 position temperature inadequately of aircraft nose, thereby lead to the molten plastics half-set, unable complete parcel heart yearn, set up mounting panel 8 and thermal-insulated frame 9, give the circular telegram of plate electrode 10 in the thermal-insulated frame 9, plate electrode 10 and give electric power supply to heating wire 11, heating wire 11 produces a large amount of heats and 1 surface contact of die sleeve cylinder, thermal-insulated frame 9 is isolated with the heat and avoids transmitting the outside, the heat is transmitted to aircraft nose 5 along die sleeve cylinder 1, thereby make 5 heats of aircraft nose can not drop, the reduction of molten plastics heat has been avoided, unable complete parcel heart yearn makes the condition that plastics electric wire production quality obtained the assurance.
The plastic extrusion die for cable production further comprises a cooling pipe 12, a mounting frame 13, a motor 14, a blowing fan blade 15 and a grid 16; the cooling pipe 12 is fixedly connected to one side part of the mounting plate 8 far away from the annular slide rail 6; the mounting frame 13 is fixedly connected to the inner wall of the cooling pipe 12, and the motor 14 is fixedly connected to the mounting frame 13; the blowing fan blade 15 is in transmission connection with the output end of the motor 14; the grating 16 is fixedly connected with the pipe orifice at the bottom of the cooling pipe 12; according to fig. 3, in order to make the plastic electric wire be capable of being rapidly molded and ensure quality, a motor 14 can be installed by arranging a cooling pipe 12, the motor 14 is fixedly connected to an installation frame 13, after the motor 14 is started, the motor 14 drives a blowing fan blade 15 to operate at high speed, so that outside air is blown to the plastic electric wire outside a machine head 5 through the cooling pipe 12, air velocity around the plastic electric wire is changed, the molded plastic electric wire capable of being rapidly cooled is achieved, and the plastic electric wire after being rapidly cooled is not easy to age.
According to the illustration in fig. 4, the plastic extrusion die for cable production further comprises a separation net 17; the separation net 17 is fixedly connected with the top pipe orifice of the cooling pipe 12; the arrangement of the partition net 17 can prevent excessive dust or mosquitoes from entering the cooling pipe 12 when the cooling pipe 12 is cooled by blowing air.
the plastic extrusion die for cable production further comprises a material receiving groove body 18; the material receiving groove body 18 is fixedly connected with the mounting plate 8 at the bottom of the annular slide rail 6; as shown in fig. 5, the material receiving tank 18 prevents the plastic in the molten state from dropping from the head 5 and receiving the plastic.
wherein, the plastic extrusion die for cable production also comprises a heat insulation plate 19; the heat insulation plate 19 is fixedly connected to the mounting plate 8 and is positioned between the cooling pipe 12 and the heat insulation frame 9; the insulation board 19 is provided to prevent the excessive heat generated from the heating wire 11 from affecting the operation of the motor 14, and the insulation board 19 can increase the degree of insulation.
The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (6)
1. A plastic extrusion die for cable production comprises a die sleeve cylinder, a die core cylinder and a machine head; the device is characterized by also comprising an annular slide rail and an annular slide block; a die sleeve inner cone is arranged in a die sleeve cylinder for bearing the plastic, the die sleeve inner cone is used for pouring the molten plastic, a die core inner cone is arranged on a die core cylinder for bearing a core wire of the electric wire, the die core inner cone is used for penetrating the core wire of the electric wire, and a machine head for wrapping the molten plastic is fixedly connected to the die core cylinder, is communicated with the inside of the die core inner cone and is clamped with the die sleeve inner cone; the annular slide rail is fixedly connected to the outer top surface of the die sleeve cylinder, and the die sleeve cylinder is connected with the annular slide rail in a sliding mode through the annular slide block.
2. The plastic extrusion die for cable production according to claim 1, further comprising a mounting plate, a heat insulation frame, an electrode plate and an electric heating wire; the mounting plate is fixedly connected to the outer wall of the annular slide rail, and the top and the bottom of the annular slide rail are fixedly connected with the mounting plate; the heat insulation frame is fixedly connected to the bottom of the mounting plate and is positioned above the die sleeve cylinder; the electrode plate is embedded in the inner wall of the heat insulation plate; the electric heating wire is fixedly connected with the electrode plate and is electrified with the electrode plate.
3. The plastic extrusion die for cable production as claimed in claim 2, further comprising a cooling tube, a mounting frame, a motor, a blowing fan blade and a grid; the cooling pipe is fixedly connected to one side part of the mounting plate, which is far away from the annular slide rail; the mounting rack is fixedly connected to the inner wall of the cooling pipe, and the motor is fixedly connected to the mounting rack; the blowing fan blade is in transmission connection with the output end of the motor; the grid is fixedly connected with the pipe orifice at the bottom of the cooling pipe.
4. The plastic extrusion die for cable production as claimed in claim 3, further comprising a spacer mesh; the separation net is fixedly connected with the top pipe orifice of the cooling pipe.
5. The plastic extrusion die for cable production as claimed in claim 4, further comprising a material receiving groove; the material receiving groove body is fixedly connected with the mounting plate at the bottom of the annular slide rail.
6. The plastic extrusion die for cable production according to claim 5, further comprising a heat insulation plate; the heat insulation plate is fixedly connected to the mounting plate and is positioned between the cooling pipe and the heat insulation frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833693.0A CN109036731B (en) | 2018-07-26 | 2018-07-26 | Plastic extrusion die for cable production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833693.0A CN109036731B (en) | 2018-07-26 | 2018-07-26 | Plastic extrusion die for cable production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109036731A CN109036731A (en) | 2018-12-18 |
| CN109036731B true CN109036731B (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810833693.0A Active CN109036731B (en) | 2018-07-26 | 2018-07-26 | Plastic extrusion die for cable production |
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| CN (1) | CN109036731B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993207A (en) * | 2019-11-22 | 2020-04-10 | 湖南新耒传导材料科技有限公司 | Plastic extrusion die for cable production |
| CN113601813B (en) * | 2021-04-16 | 2023-06-16 | 上海起帆电线电缆技术有限公司 | Extrusion device and extrusion method for rubber sleeve cable capable of preventing die sleeve from sticking |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3356276A (en) * | 1965-03-08 | 1967-12-05 | Reynolds Metals Co | Extruded composite conductor rails |
| JPS4944232B1 (en) * | 1969-05-13 | 1974-11-27 | ||
| CN204471819U (en) * | 2014-12-31 | 2015-07-15 | 贵州名鸽电线电缆有限公司 | A kind of rotatable electric wire extruding machine external mold |
| CN204431706U (en) * | 2014-12-31 | 2015-07-01 | 贵州名鸽电线电缆有限公司 | A kind of throw rotating electric wire extruding machine external mold |
| CN204701114U (en) * | 2015-06-09 | 2015-10-14 | 中天科技装备电缆有限公司 | A kind of novel cable extrusion molding mould |
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| CN109036731A (en) | 2018-12-18 |
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Effective date of registration: 20191118 Address after: 315338 Cidong Avenue 1999, Binhai Economic Development Zone, Cixi City, Ningbo City, Zhejiang Province Applicant after: Ningbo Korea Telecom Technology Co., Ltd. Address before: 510000 Dabu Road 219 North 50 meters, Baiyun District, Guangzhou City, Guangdong Province Applicant before: Sun Yanhong |
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