CN217169677U - Three-layer co-extrusion machine head for cable production - Google Patents
Three-layer co-extrusion machine head for cable production Download PDFInfo
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- CN217169677U CN217169677U CN202220456617.4U CN202220456617U CN217169677U CN 217169677 U CN217169677 U CN 217169677U CN 202220456617 U CN202220456617 U CN 202220456617U CN 217169677 U CN217169677 U CN 217169677U
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Abstract
The utility model discloses a cable production is with three-layer co-extrusion aircraft nose, its structure includes mould and frame, its characterized in that, the mould sets up the one end at the frame, be provided with interior heating device in the frame, the mold core that includes in interior heating device and the mould is connected, still be provided with the hot plate on the frame, the feed inlet has been seted up on the hot plate, the interior feedstock channel that sets up in feed inlet and the mold core is linked together, the mold core includes interior mold core and the outer mold core that mutual cover was established. The utility model discloses a back flow in heating device adds the conduction oil and comes the heating to the inner mold core including, and then conducts the heat again to the inner mold core, and feed channel's material just can reach the temperature that needs in the process.
Description
Technical Field
The utility model belongs to the technical field of the injecting glue equipment, concretely relates to cable production is with three-layer crowded aircraft nose altogether
Background
The insulating layer refers to an insulating material layer between the heating wires or between the heating wires and the grounding shielding layer. The isolating wire is mainly used for isolating wires to prevent people from being injured by electric shock. The wire and cable is a product which people rely on more and more in the present, mainly used for transmitting the power, the use of mobile phone, computer is generally required to support of the power, the resistance to tearing of different occasions of the wire, temperature resistant degree are all different, the high-quality insulating layer needs to have good physical and mechanical properties, such as tensile, bending resistance, vibration resistance, torsion resistance, etc., in order to adapt to these different service environments; the wire can be normally and reliably operated and used under the protection of the insulating layer no matter how severe the environment is.
Under different use requirements, a cable can be attached with a plurality of layers of insulating layers, if the effect that the insulating layers can be mutually stripped is produced, the temperature of each layer during discharging needs to be controlled, and the problem of heating of the innermost inner mold core of the device needs to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a back flow in heating device adds the conduction oil and comes the heating to the inner mold core including, and then conducts the heat again to the inner mold core, and feed channel's material just can reach the temperature that needs in the process.
The utility model provides a cable production is with three-layer machine head of coextruding, includes mould and frame, its characterized in that, the mould sets up the one end at the frame, be provided with interior heating device in the frame, the mold core that interior heating device included with the mould is connected, still be provided with the hot plate on the frame, the feed inlet has been seted up on the hot plate, the interior feedstock channel that feed inlet and mold core set up is linked together, the mold core includes the interior mold core and the outer mold core that establish of mutual cover.
Preferably, the internal heating device comprises an internal mold core and a return pipe, the return pipe is embedded in the internal mold core, the internal mold core is connected with the internal mold core, heat conduction oil is arranged in the return pipe, and the return pipe enters from one end of the internal mold core and extends to the other end of the internal mold core.
Preferably, the inner mold core is connected with the inner mold core, a core guide channel with two through ends is formed inside the inner mold core and the inner mold core, and the circular diameter of the core guide channel is gradually reduced towards one end of the inner mold core.
Preferably, the mold further comprises a mold sleeve arranged outside the mold core, a large mold core is arranged between the mold core and the mold sleeve, a wire bearing area is arranged at the intersection of the mold sleeve, the mold core and the large mold core, and one end of the large mold core extends to the wire bearing area in an inclined mode.
Preferably, the heating plate comprises an outer shell and a heating resistor, the heating resistor is arranged in the outer shell, the large mold core is connected with the heating plate, the mold sleeve is connected to the large mold core, and an outer feeding channel is formed by a gap between the mold sleeve and the large mold core.
Preferably, a gap between the large mold core and the outer mold core forms a middle feeding channel, and the middle feeding channel is communicated with a feeding hopper arranged on the heating plate.
Preferably, an outer mold core is arranged between the inner heating device and the heating plate, the outer mold core is connected with the outer mold core, the inner feeding channel is formed by a gap between the outer mold core and the inner mold core, and the feeding hole is formed in a position close to the inner heating device.
Preferably, one end of the outer mold core, which is far away from the mold core, is provided with an eccentric adjusting screw, the eccentric adjusting screw penetrates through the outer mold core from the outer side and is abutted against the inner heating device in the inner side, and the eccentric adjusting screw is in threaded connection with the outer mold core.
The utility model has the advantages that:
because the insulating layer of the innermost layer needs higher temperature before glue injection, the heating plate at the outer side is not enough to raise the temperature of the insulating layer to the target temperature, the return pipe is buried in the inner mold core, heat conduction oil is circularly introduced from the two ends of the return pipe to raise the temperature of the inner mold core, so that the temperature of the inner mold core spliced with the return pipe is also raised, the feed inlet is arranged at a position close to the return pipe, insulating materials are heated by the inner heating device when entering the front section of the inner feed channel, gradually flow into the rear end and are heated by the inner mold core, and the insulating materials are extruded from a wire bearing area and attached to the guide core through the gradually narrowed channel along with the pushing of pressure. Wherein there is the heat insulating layer between centre form core and the external mold core, prevents both contacts, makes the too much heat conduction of centre form core to external mold core, and then lets the material in well charge passage heat up the excessive speed.
The middle feeding channel is composed of an outer mold core and a large mold core, and the outer mold core and the large mold core are both contacted with the heating plate and can heat the insulating material in the middle feeding channel. The feeder hopper is pegged graft on the hot plate and communicates with well feedstock channel, because the feeder hopper is heated by the heating plate area, also by preliminary heating from the material that the feeder hopper got into, makes the mobility of material strengthen, and the flow among the well feedstock channel is also more smooth and easy. The discharge part at the other end of the middle feeding channel is arranged at the rear end of the inner feeding channel, and the extruded insulating material covers the inner insulating layer.
The outer feeding channel is formed by splicing a die sleeve and a large die core, the heating plate is divided into a part in contact with the large die core and a part in contact with the outer die core, the heating plates of the two parts can be separately adjusted, so that the middle feeding channel and the outer feeding channel generate different temperatures, the extruded material covers the middle insulating layer, and finally three insulating layers which can be mutually stripped are formed due to different cooling rates of the layers.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is the schematic view of the mold structure of the present invention.
Fig. 3 is a schematic structural view of the internal heating device of the present invention.
In the figure, a mold core 1, a mold sleeve 2, a core guide channel 3, a large mold core 4, an inner mold core 5, an outer mold core 6, a middle feeding channel 7, an inner feeding channel 8, an outer feeding channel 9, a mold 10, a machine base 11, a wire bearing area 12, an inner heating device 13, a heating plate 14, a feed port 15, an inner mold core 16, a return pipe 17, an outer mold core 18, a feed hopper 19, an outer shell 23, an eccentric adjusting screw 24 and a heating resistor 25.
Detailed Description
As shown in fig. 1-3, a three-layer co-extrusion machine head for cable production comprises a mold and a machine base, and is characterized in that the mold 10 is arranged at one end of the machine base 11, an internal heating device 13 is arranged in the machine base 11, the internal heating device 13 is connected with a mold core 1 included in the mold 10, a heating plate 14 is further arranged on the machine base 11, a feed inlet 15 is formed in the heating plate 14, the feed inlet 15 is communicated with an internal feed channel 8 arranged in the mold core 1, and the mold core 1 comprises an internal mold core 5 and an external mold core 6 which are mutually sleeved.
In this embodiment, the internal heating device 13 includes an internal mold core 16 and a return pipe 17, the return pipe 17 is embedded in the internal mold core 16, the internal mold core 16 is connected with the internal mold core 5, and heat conducting oil is provided in the return pipe 17. The return pipe 17 enters from one end of the internal mold core 16, extends to the tail end of the other end of the internal mold core 16, rotates 180 degrees and penetrates out from the end where the internal mold core 16 enters, and a section of heat conduction loop is formed in the internal mold core 16.
In this embodiment, the inner mold core 16 is connected to the inner mold core 5, the inner mold core 16 and the inner mold core 5 are provided with a core guide channel 3 having two through ends, and a circular diameter of the core guide channel 3 is gradually reduced toward one end of the inner mold core 5.
In this embodiment, the mold 10 further includes a mold sleeve 2 disposed outside the mold core 1, a large mold core 4 is disposed between the mold core 1 and the mold sleeve 2, a yarn bearing area 12 is disposed at an intersection of the mold sleeve 2, the mold core 1, and the large mold core 4, and one end of the large mold core 4 extends obliquely to the yarn bearing area 12.
In this embodiment, the heating plate 14 includes an outer casing 23 and a heating resistor 25, the heating resistor 25 is disposed in the outer casing 23, the large mold core 4 is connected to the heating plate 14, the mold sleeve 2 is connected to the large mold core 4, and the gap between the mold sleeve 2 and the large mold core 4 forms the outer feeding channel 9.
In this embodiment, the gap between the large mold core 4 and the outer mold core 6 forms a middle feeding passage 7, and the middle feeding passage 7 communicates with a feeding hopper 19 provided on the heating plate 14.
In this embodiment, an outer mold core 18 is disposed between the inner heating device 13 and the heating plate 14, the outer mold core 18 is connected to the outer mold core 6, the inner feeding channel 8 is formed by a gap between the outer mold core 6 and the inner mold core 5, and the feeding hole 15 is opened near the inner heating device 13.
In the present embodiment, an end of the outer die core 18 away from the die core 1 is provided with an eccentric adjusting screw 24, the eccentric adjusting screw 24 penetrates through the outer die core 18 from the outside and is internally abutted against the inner heating device 13, and the eccentric adjusting screw 24 is in threaded connection with the outer die core 18.
Because the insulating layer of the innermost layer needs higher temperature before glue injection, the heating plate 14 on the outer side is not enough to raise the temperature of the insulating layer to the target temperature, the return pipe 17 is embedded in the inner mold core 16, heat conducting oil is circularly introduced from the two ends of the return pipe 17 to raise the temperature of the inner mold core 16, so that the temperature of the inner mold core 5 spliced with the return pipe is also raised, the feed inlet 15 is arranged at a position close to the return pipe 17, the insulating material is heated by the inner heating device 13 when entering the front section of the inner feed channel 8, flows into the rear end gradually and is heated by the inner mold core 5, and the insulating material is extruded from the wire bearing area 12 and is attached to the guide core along with the pushing of pressure through the gradually narrowed channel. Wherein, a heat insulation layer is arranged between the inner mold core 1 and the outer mold core 18 to prevent the contact between the inner mold core 1 and the outer mold core 18, so that excessive heat of the inner mold core 1 is transmitted to the outer mold core 18, and the temperature of the material in the middle feeding channel 7 is increased too fast.
The middle feed channel 7 is formed by the outer mold core 6 and the large mold core 4, and both the outer mold core 6 and the large mold core 4 are in contact with the heating plate 14, which can heat up the insulating material in the middle feed channel 7. The feed hopper 19 is inserted into the heating plate 14 and communicated with the middle feeding channel 7, and because the feed hopper 19 is heated by the heating plate 14, the material entering from the feed hopper 19 is also primarily heated, so that the flowability of the material is increased, and the flow in the middle feeding channel 7 is smoother. The discharge at the other end of the middle feed channel 7 is positioned at the rear end of the inner feed channel 8, and the extruded insulating material covers the inner insulating layer.
The outer feed channel 9 is formed by splicing the die sleeve 2 and the large die core 4, the heating plate 14 is divided into a part contacting with the large die core 4 and a part contacting with the outer die core 6, the heating plates 14 of the two parts can be separately adjusted, so that the middle feed channel 7 and the outer feed channel 9 generate different temperatures, extruded materials are covered on the middle layer insulating layer, and finally three layers of insulating layers which can be mutually stripped are formed due to different cooling rates of the layers.
The side of the outer mold core 18 far away from the mold core 1 is symmetrically connected with a plurality of eccentric adjusting screws 24 in a threaded manner, the heads of the eccentric adjusting screws 24 are positioned outside the equipment, the screw part penetrates through the outer mold core 18 and is abutted against the surface of the inner mold core 16, the length of the screw penetrating through the part of the outer mold core 18 is changed by rotating the eccentric adjusting screws 24 from the outside, so that the nominal distance between the outer mold core 18 and the inner mold core 16 is changed, and the axes of the outer mold core 18 and the inner mold core 16 can be adjusted to be aligned by jointly adjusting the plurality of symmetrical eccentric adjusting screws 24.
The extended part of one end of the large mold core 4 obliquely extends to the position of the wire bearing area 12 and just forms a section of middle feeding channel 7 gradually closing in towards the wire bearing area 12 with the outer surface of the outer mold core 6, so that the discharging amount of a channel opening can be accurately controlled. Meanwhile, the extension part of the large mold core 4 and the mold sleeve 2 form an outer feeding channel 9, and one end of the inner feeding channel, the middle feeding channel and the outer feeding channel, which are communicated with the wire bearing area 12, are arranged in a front-back sequence, so that the insulating materials corresponding to the three feeding channels are attached to the guide core in a layered manner. The insulating materials in the feeding channel are still heated, active molecular motion of the insulating materials in different levels after being contacted in advance at a higher temperature accelerates the fusion of the materials, but the feeding channel directly transports the insulating materials to the wire bearing area 12, so that the insulating materials in different levels are prevented from being fused together before being contacted with the guide core, different insulating layers of the cable can be mutually stripped, and the cable is convenient to carry out various operations in actual use.
The diameter of the channel circle in the core guide channel 3 is gradually reduced towards the direction of the wire bearing area 12, so that the diameter of the circle close to one end of the wire bearing area is just the same as the size of the core guide, the core guide in the process of advancing can be straightened and straightened by the core guide channel 3, the subsequent adhesive attaching is more accurate and smooth, and meanwhile, the pollution caused by the fact that the insulating material reversely enters the core guide channel 3 is also prevented.
Each feeding channel is formed by sleeving two mold cores and is not an integrated groove or pipeline, and the channel can be cleaned very conveniently and completely after machining is finished. The mold cores are not mutually contacted and are fixed on the head of the glue injection machine through threads far away from one end of the mold sleeve 2.
Embodiment mode 1
Each feed channel is connected to a heating plate in the machine head, through which the insulating material is heated. The material in the outer feed channel 9 was heated and maintained at 130 c, the material in the middle feed channel 7 at 120 c and the material in the inner feed channel 8 at 200 c, due to the higher temperature required for the material in the inner feed channel 8, and the additional heating through a set of return pipes. Then the core is put into the core channel 3, the insulating material is extruded out from the inner, middle and outer to the wire bearing area 12 by the pressure device, the three layers of insulating materials are moved outwards along with the core, and the three layers of insulating materials are different in solidification rate due to the difference of temperature, so that the three layers of insulating materials are orderly wrapped outside the core. And finally, conveying the guide core coated with the insulating material into a vulcanizing tube for vulcanization molding.
Each feed channel is connected to a heating plate in the machine head, through which the insulating material is heated. The material in the outer feed channel 9 is heated and maintained at 140 c, the material in the middle feed channel 7 is heated and maintained at 130 c, and the material in the inner feed channel 8 is maintained at 210 c, since the material in the inner feed channel 8 requires a higher temperature, and is additionally heated by a set of return pipes. Then the core is put into the core channel 3, the insulating material is extruded out from the inner, middle and outer to the wire bearing area 12 by the pressure device, the three layers of insulating materials are moved outwards along with the core, and the three layers of insulating materials are different in solidification rate due to the difference of temperature, so that the three layers of insulating materials are orderly wrapped outside the core. And finally, conveying the guide core coated with the insulating material into a vulcanizing tube for vulcanization molding.
Each feed channel is connected to a heating plate in the machine head, by means of which the insulating material is heated. The material in the outer feed channel 9 was heated and maintained at 150 c, the material in the middle feed channel 7 at 140 c and the material in the inner feed channel 8 at 220 c, due to the higher temperature required for the material in the inner feed channel 8, and the additional heating via a set of return pipes. Then the core is put into the core channel 3, the insulating material is extruded out from the inner, middle and outer to the wire bearing area 12 by the pressure device, the three layers of insulating materials are moved outwards along with the core, and the three layers of insulating materials are different in solidification rate due to the difference of temperature, so that the three layers of insulating materials are orderly wrapped outside the core. And finally, conveying the guide core coated with the insulating material into a vulcanizing tube for vulcanization molding.
Because the effect that each insulating layer can peel off each other needs to reach, consequently three independent feedstock channels can the too fast heat energy exchange of insulating material between the different feedstock channels of certain degree of separation. It can be seen from the above embodiments that the temperatures of the three feeding channels are gradually reduced from inside to outside, and the feeding channels are formed by the inner and outer surfaces of the two adjacent mold cores, so that the excess heat of the inner channels can be conducted in a controlled manner through the mold cores, and the working pressure of the heating plate is reduced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a cable production is with three-layer machine head of coextruding, includes mould and frame, its characterized in that, mould (10) set up the one end in frame (11), be provided with interior heating device (13) in frame (11), interior heating device (13) are connected with mold core (1) including in mould (10), still be provided with hot plate (14) on frame (11), feed inlet (15) have been seted up on hot plate (14), interior feedstock channel (8) that set up in feed inlet (15) and mold core (1) are linked together, interior mold core (5) and outer mold core (6) that establish are established including overlapping each other in mold core (1).
2. The three-layer co-extrusion machine head for cable production according to claim 1, characterized in that: the internal heating device (13) comprises an internal mold core (16) and a return pipe (17), the return pipe (17) is buried in the internal mold core (16) in an embedded mode, the internal mold core (16) is connected with the internal mold core (5), heat conduction oil is arranged in the return pipe (17), and the return pipe (17) enters from one end of the internal mold core (16) and extends to the other end of the internal mold core (16).
3. The three-layer co-extrusion machine head for cable production according to claim 2, characterized in that: the inner die core (16) and the inner die core (5) are internally provided with a core guide channel (3) with two through ends, and the circular diameter of the core guide channel (3) is gradually reduced towards one end of the inner die core (5).
4. The three-layer co-extrusion machine head for cable production according to claim 1, characterized in that: the die (10) is characterized by further comprising a die sleeve (2) arranged outside the die core (1), a large die core (4) is arranged between the die core (1) and the die sleeve (2), a line bearing area (12) is arranged at the intersection of the die sleeve (2), the die core (1) and the large die core (4), and one end of the large die core (4) extends to the line bearing area (12) in an inclined mode.
5. The three-layer co-extrusion machine head for cable production according to claim 4, characterized in that: the heating plate (14) comprises an outer shell (23) and a heating resistor (25), the heating resistor (25) is arranged in the outer shell (23), the outer shell (23) is connected with a large mold core (4), a mold sleeve (2) is connected onto the large mold core (4), and a gap between the mold sleeve (2) and the large mold core (4) forms an outer feeding channel (9).
6. The three-layer co-extrusion machine head for cable production according to claim 4, characterized in that: a gap between the large mold core (4) and the outer mold core (6) forms a middle feeding channel (7), and the middle feeding channel (7) is communicated with a feeding hopper (19) arranged on the heating plate (14).
7. The three-layer co-extrusion machine head for cable production according to claim 1, characterized in that: an outer die core (18) is arranged between the inner heating device (13) and the heating plate (14), the outer die core (18) is connected with the outer die core (6), the inner feeding channel (8) is formed by a gap between the outer die core (6) and the inner die core (5), and the feeding hole (15) is formed in a position close to the inner heating device (13).
8. The three-layer co-extrusion machine head for cable production according to claim 7, characterized in that: and one end of the outer die core (18) far away from the die core (1) is provided with an eccentric adjusting screw (24), the eccentric adjusting screw (24) penetrates through the outer die core (18) from the outer side and is abutted against the inner heating device (13) in the inner part, and the eccentric adjusting screw (24) is in threaded connection with the outer die core (18).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220456617.4U CN217169677U (en) | 2022-03-03 | 2022-03-03 | Three-layer co-extrusion machine head for cable production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220456617.4U CN217169677U (en) | 2022-03-03 | 2022-03-03 | Three-layer co-extrusion machine head for cable production |
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| CN217169677U true CN217169677U (en) | 2022-08-12 |
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| CN202220456617.4U Active CN217169677U (en) | 2022-03-03 | 2022-03-03 | Three-layer co-extrusion machine head for cable production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474668A (en) * | 2022-03-03 | 2022-05-13 | 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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2022
- 2022-03-03 CN CN202220456617.4U patent/CN217169677U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474668A (en) * | 2022-03-03 | 2022-05-13 | 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 |
| 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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