CN212219212U - Double-layer co-extrusion machine head for cable processing - Google Patents
Double-layer co-extrusion machine head for cable processing Download PDFInfo
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- CN212219212U CN212219212U CN202020764673.5U CN202020764673U CN212219212U CN 212219212 U CN212219212 U CN 212219212U CN 202020764673 U CN202020764673 U CN 202020764673U CN 212219212 U CN212219212 U CN 212219212U
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Abstract
The utility model discloses a double-layer co-extrusion machine head for processing cables, which comprises a core mould, a mouth mould and a mould base, wherein the mould base comprises an outer mould sleeve, a middle mould sleeve and an inner mould sleeve; the middle die sleeve is coaxially sleeved on the outer side of the core die, and an inner layer material flow channel with a step structure is formed between the inner wall of the middle die sleeve and the outer wall of the core die; the inner die sleeve is coaxially and movably arranged at the end part of the middle die sleeve, an inclined inner layer material extrusion channel is formed between the inner die sleeve and the conical head part of the die, the inner layer material extrusion channel is communicated with the inner layer material extrusion channel, and the inclined outer layer material extrusion channel is processed in the inner die sleeve; the outer die sleeve is coaxially sleeved on the outer side of the middle die sleeve, a first end plate is arranged at one end of the outer die sleeve, and a second end plate is arranged at the other end of the outer die sleeve. The utility model has the advantages of simple structural design, flexible and convenient use, wide application range, good extrusion effect and high production efficiency.
Description
Technical Field
The utility model belongs to the technical field of wire and cable production facility, concretely relates to cable processing is with double-deck crowded aircraft nose altogether.
Background
The wire and cable is used for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion, the wire and cable in a broad sense is also called as cable for short, the cable in a narrow sense is insulated cable, and it can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer jackets, the cable may also have additional conductors without insulation. The cable generally comprises a metal core wire and an insulating layer coated on the metal core wire or a sheath layer outside the insulating wire, wherein the plastic sheath layer of the electric wire and the cable is extruded in a continuous extrusion mode, and most extrusion equipment is a screw extruder. The extrusion molding machine head is a key tool in electric wire and cable production equipment, and is used for matching with an extruder and an auxiliary machine to uniformly and densely coat a coating material (such as polyvinyl chloride, rubber and the like) on a metal conductor. The existing extrusion molding machine heads can only coat one insulating layer generally, and along with the introduction of the functions of cables, a plurality of cables need to coat two insulating layers, so that machine heads for realizing double-layer co-extrusion are also available in the market, but the double-layer co-extrusion machine heads are additionally provided with a shunting flow channel on the basis of the original structure, and due to the defects of structural design, the following defects are discovered in the using process; firstly, the neck ring die cannot be well matched with a die body and a die core in a high-precision manner, and the phenomenon of eccentricity of a wire skin, namely the phenomenon that one side of the wire skin is thick and the other side of the wire skin is thin, often occurs during wire extruding processing; secondly, the core mold and the mold sleeve are of an integral structure, are not easy to replace, and cannot be adjusted in time in the aspect of selecting the extrusion molding diameter and thickness of the cable; and thirdly, in the flowing process of the liquid plastic, the liquid plastic close to the die can be retained, and the retention phenomenon is more serious along with the prolonging of the service time, so that the uniformity and the quality of the coated plastic finally coated outside the core wire are poorer. Therefore, it is an objective need to develop a double-layer co-extrusion machine head for cable processing, which has the advantages of simple structural design, flexible and convenient use, wide application range and capability of effectively improving the extrusion effect and the production efficiency.
Disclosure of Invention
An object of the utility model is to provide a cable processing is with double-deck crowded aircraft nose altogether that structural design is simple, the use is nimble convenient, application scope is wide, can effectual improvement extrude effect and production efficiency.
The utility model is realized by the following steps that the die comprises a core die, a mouth die and a die holder, the die holder comprises an outer die sleeve, a middle die sleeve and an inner die sleeve, the core mold comprises a first connecting part, a second connecting part and a third connecting part which are arranged in a step-shaped structure, the outer diameters of the first connecting part, the second connecting part and the third connecting part are sequentially reduced, a first groove is processed at the end part of the third connecting part, a positioning shaft sleeve is coaxially arranged in the first groove, one end of the positioning shaft sleeve is provided with a positioning baffle ring, the positioning baffle ring is in threaded rotary installation in the first groove, the die comprises a cone head part and a connecting part which are integrally processed, the connecting part is in threaded rotary installation on the positioning shaft sleeve in the first groove, the large end surface of the cone head part is in contact with the outer end surface of the third connecting part, and a first sealing ring is arranged between the outer end surface of the third connecting part and the large end surface of the cone head part; the middle die sleeve is coaxially sleeved on the outer side of the core die, the length of the middle die sleeve is longer than that of the core die, one end of the middle die sleeve is connected to the end face of the first connecting portion in a butting mode, a second sealing ring is arranged between the inner wall of the middle die sleeve on the side close to the first connecting portion and the outer wall of the core die, and an inner layer material flow channel of a stepped structure is formed between the inner wall of the middle die sleeve on the side far away from the first connecting portion and the outer wall of the core die; the inner die sleeve is coaxially and movably arranged at the end part of the middle die sleeve, an inclined inner layer material extrusion channel is formed between the inner die sleeve and the conical head part of the die, the inner layer material extrusion channel is communicated with the inner layer material extrusion channel, and the inclined outer layer material extrusion channel is processed in the inner die sleeve; the coaxial suit of outer die sleeve is in the outside of middle die sleeve, the one end of outer die sleeve is provided with first end plate, the other end is provided with the second end plate, first end plate, the mandrel, the bush, the center department of inner die sleeve and second end plate link up along the axial direction of mandrel and is processed cored wire through-hole, between first end plate and the outer die sleeve, it is fixed all through first bolted connection between first end plate and the first connecting portion, second end plate and outer die sleeve, it is fixed all through second bolted connection between second end plate (14) and the middle die sleeve and between second end plate and the inner die sleeve, outer die sleeve and vertical run-through are provided with inlayer material import pipe on the middle die sleeve, inlayer material import pipe and inlayer material pipeline intercommunication, outer die sleeve, the vertical run-through is provided with outer material import pipe on middle die sleeve and the inner die sleeve, outer material import pipe and outer material extrusion channel intercommunication.
Furthermore, the inner die sleeve connected with the middle die sleeve is provided with a supporting baffle sleeve, the supporting baffle sleeve and the inner die sleeve are integrally processed and manufactured, a slot is formed between the outer wall of the supporting baffle sleeve and the inner wall of the middle die sleeve, the inner wall of the middle die sleeve is provided with a plug-in ring sleeve, the plug-in ring sleeve and the middle die sleeve are integrally processed and manufactured, the plug-in ring sleeve is plugged and installed in the slot, a plurality of connecting springs are uniformly distributed in the slot, one end of each connecting spring is fixedly connected with the middle die sleeve, and the other end of each connecting spring is fixedly connected with the inner die sleeve.
Furthermore, the positioning baffle ring and the positioning shaft sleeve are integrally processed and manufactured.
Furthermore, a heating coil is spirally arranged on the inner wall of the outer die sleeve, and a heat insulation layer is arranged on the outer wall of the outer die sleeve.
Furthermore, a flow limiting ring is installed at the step of the inner layer material flow channel, and a plurality of fan-shaped holes are uniformly distributed on the circumference of the flow limiting ring.
Compared with the prior art, the invention has the advantages that: firstly, the neck mold is movably connected with the core mold through the positioning shaft sleeve, and the inner mold sleeve and the middle mold sleeve are also movably connected, so that on one hand, the neck mold, the core mold and the inner mold sleeve can be matched with each other at high precision, the coaxiality between the neck mold, the core mold and the inner mold sleeve can be effectively improved, and the axial lead of the cladding material and the axial lead of the core wire are positioned on the same horizontal line, thereby effectively keeping the stability of the core wire operation process, ensuring the concentricity of the core wire and the mold, leading the cladding of the core wire to be more uniform, on the other hand, an extrusion channel formed can lead the liquid plastic to uniformly flow, completely avoiding the phenomenon of liquid plastic detention, leading the liquid plastic to be always in a uniform state, and ensuring the uniformity and the quality of the plastic; secondly all adopt detachable structural style between each part, not only can the heart yearn of different diameters of extrusion molding as required, also can the different insulating layer of parcel thickness of extrusion molding, it is all more convenient to the clearance maintenance simultaneously. The utility model has the advantages of structural design is simple, the use is nimble convenient, application scope is wide, extrude effectual, production efficiency is high, easily uses widely.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the restrictor ring 11;
fig. 3 is a schematic view of a connection structure between the intermediate die sleeve 5 and the inner die sleeve 16;
in the figure, 1-a first end plate, 2-a first bolt, 3-a core mold, 301-a first connecting part, 302-a second connecting part, 303-a third connecting part, 4-a core wire through hole, 5-a middle mold sleeve, 6-an outer mold sleeve, 7-a heating coil, 8-an inner layer material inlet pipe, 9-an inner layer material flow channel, 10-a heat insulation layer, 11-a flow limiting ring, 111-a fan-shaped hole, 12-a positioning baffle ring, 13-an outer layer material inlet pipe, 14-a second end plate, 15-a second bolt, 16-an inner mold sleeve, 17-an outer layer material extrusion channel, 18-a mold, 19-a positioning shaft sleeve, 20-a second sealing ring, 21-a second sealing ring, 22-an inner layer material extrusion channel, 23-a slot and 24-a supporting baffle sleeve, 25-plug ring sleeve, 26-connecting spring.
Detailed Description
The following further describes the present invention with reference to the attached drawings, but the present invention is not limited in any way, and any changes or improvements based on the teaching of the present invention all belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the utility model comprises a core mold 3, a die 18 and a die holder, wherein the die holder comprises an outer die sleeve 6, a middle die sleeve 5 and an inner die sleeve 16, the core mold 3 comprises a first connecting part 301, a second connecting part 302 and a third connecting part 303 which are arranged in a ladder-shaped structure, the outer diameters of the first connecting part 301, the second connecting part 302 and the third connecting part 303 are sequentially reduced, a first groove is processed at the end part of the third connecting part 303, a positioning shaft sleeve 19 is coaxially arranged in the first groove, one end of the positioning shaft sleeve 19 is provided with a positioning baffle ring 12, the positioning baffle ring 12 is rotatably installed in the first groove through threads, the die 18 comprises a cone head part and a connecting part which are integrally processed, the die 18 is made of tungsten steel, the tungsten steel has the advantages of high temperature resistance and wear resistance, and is helpful for reducing the abrasion of a metal wire core and the cone head part caused by extrusion molding high temperature, thereby improving the durability of the die. The connecting part threads are rotatably mounted on the positioning shaft sleeve 19 in the first groove, the large end face of the conical head part is in contact with the outer end face of the third connecting part 303, the first sealing ring 20 is arranged between the outer end face of the third connecting part 303 and the large end face of the conical head part, the first sealing ring 20 can prevent liquid insulation from leaking into the first groove, the neck mold 18 is movably connected with the first groove through the positioning shaft sleeve 19, when the positioning shaft sleeve 19 can guarantee the connection strength between the neck mold 18 and the core mold 3, the coaxiality between the neck mold 18 and the core mold 3 can be guaranteed for a long time, and the neck mold 18 and the core mold 3 are movably connected, so that core wires of different specifications can be conveniently replaced, and the wrapping requirements of core wires of different specifications can be met.
The coaxial suit of middle die sleeve 5 is in the outside of mandrel 3, the length of middle die sleeve 5 is longer than the length of mandrel 3, the one end of middle die sleeve 5 is contradicted and is connected on the terminal surface of first connecting portion 301, is provided with second sealing washer 21 between the middle die sleeve 5 inner wall that is close to first connecting portion 301 one side and the 3 outer walls of mandrel, is formed with inner layer material stream way 9 of stair structure between the middle die sleeve 5 inner wall that keeps away from first connecting portion 301 one side and the 3 outer walls of mandrel, and second sealing washer 21 can prevent that liquid plastics from flowing into between middle die sleeve 5 and the mandrel 3, causes the leakage.
The inner die sleeve 16 is coaxially and movably arranged at the end part of the middle die sleeve 5, an inclined inner layer material extrusion channel 22 is formed between the inner die sleeve 16 and the conical head part of the neck ring die 18, the inner layer material extrusion channel 22 is communicated with the inner layer material flow channel 9, the inner die sleeve 16 is internally provided with an inclined outer layer material extrusion channel 17, the inner die sleeve 16 and the middle die sleeve 5 adopt a movable connection mode, the space size of the inner layer material extrusion channel 22 formed between the inner die sleeve 16 and the die 18 can be adjusted to meet the requirements of different thicknesses of the core wire coating, meanwhile, the inner layer material extrusion channel 22 and the outer layer material extrusion channel 17 are both arranged to be inclined structures, so that liquid plastic can uniformly flow in the extrusion channels, the phenomenon of liquid plastic detention can be avoided, and the liquid plastic can be always in a uniform state, thereby ensuring that the plastic coated on the surface of the core wire has good uniformity and quality.
The outer die sleeve 6 is coaxially sleeved outside the middle die sleeve 5, one end of the outer die sleeve 6 is provided with a first end plate 1, the other end of the outer die sleeve 6 is provided with a second end plate 14, the centers of the first end plate 1, the core die 3, the die 18, the inner die sleeve 16 and the second end plate 14 are provided with core wire through holes 4 in a penetrating manner along the axial direction of the core die 3, the first end plate 1 and the outer die sleeve 6 and the first connecting part 1 and the first connecting part 301 are fixedly connected through first bolts 2, the second end plate 14 and the outer die sleeve 6, the second end plate 14 and the middle die sleeve 5 and the second end plate 14 and the inner die sleeve 16 are fixedly connected through second bolts 15, an inner material inlet pipe 8 vertically penetrates through the outer die sleeve 6 and the middle die sleeve 5, the inner material inlet pipe 8 is communicated with an inner material flow channel 9, and an outer material inlet pipe 13 vertically penetrates through the outer die sleeve 6, the middle die sleeve 5 and the inner die sleeve 16, outer material import pipe 13 and outer material extrusion channel 17 intercommunication utilize first end plate 1 and second end plate 14 to fix the both ends of each die sleeve, can fix the axiality of interior die sleeve 16, middle die sleeve 5 and outer die sleeve 6 on the one hand, on the other hand to the dismantlement between each part, clearance, maintenance, change all compare conveniently.
The utility model discloses a use is: carry the liquid plastics of inlayer material in the import pipe 8 to inlayer material runner 9 through inlayer material, extrude runner 17 through outer material import pipe 13 to outer material and carry outer liquid plastics, at reinforced in-process, when the heart yearn was pull by the tractor and gets into heart yearn through-hole 4 simultaneously, inlayer liquid plastics extrude the surface of parcel at the heart yearn through inlayer material extrusion passageway 22 earlier, outer material liquid plastics also extrude the back parcel on the heart yearn through outer material extrusion passageway 17 immediately, thereby accomplish the double-deck parcel device of extruding of heart yearn. This practical novel with bush 18 through location axle sleeve 19 and mandrel 3 swing joint, also adopt swing joint's mode in interior die sleeve 16 and the middle die sleeve 5, such structural style can realize bush 18 on the one hand, the high accuracy matching of mandrel 3 and interior die sleeve 16, can effectual improvement bush 18, the axiality between mandrel 3 and the interior die sleeve 16, make cladding material and the axial lead of heart yearn be located same water flat line, thereby the stationarity of heart yearn operation process has been kept effectively, the concentricity of heart yearn and mould has been guaranteed, let the cladding of heart yearn more even, the extrusion channel that on the other hand formed can make the even flow of liquid plastics, can avoid liquid plastics to be detained the phenomenon completely, make liquid plastics be in even state always, thereby guarantee the homogeneity and the equal preferred of quality of the plastics of heart yearn cladding at the surface.
Further, a bolt connection can be adopted between the inner die sleeve and the middle die sleeve, and a supporting baffle sleeve 24 is preferably arranged on the inner die sleeve 16 connected with the middle die sleeve 5, the supporting blocking sleeve 24 and the inner die sleeve 16 are integrally processed and manufactured, a slot 23 is formed between the outer wall of the supporting blocking sleeve 24 and the inner wall of the middle die sleeve 5, the inner wall of the middle die sleeve 5 is provided with an inserting ring sleeve 25, the inserting ring sleeve 25 and the middle die sleeve 5 are integrally processed and manufactured, the inserting ring sleeve 25 is inserted and installed in the inserting groove 23, and a plurality of connecting springs 26 are uniformly distributed in the slot 23, one end of each connecting spring 26 is fixedly connected with the middle die sleeve 5, the other end is fixedly connected with the inner die sleeve 16, such a connection mode can play a role in buffering the inner layer liquid plastic flowing into the inner layer material extrusion channel 22, so that the flow of the inner layer liquid plastic entering the inner layer material extrusion channel 22 is more uniform.
In order to improve the usability of the positioning shaft sleeve 19, the positioning baffle ring 12 and the positioning shaft sleeve 19 are integrally processed and manufactured.
Further, in order to ensure that the temperature of the liquid plastic does not change in the core wire wrapping process, the heating coil 7 is spirally arranged on the inner wall of the outer die sleeve 6, the heat insulation layer 10 is arranged on the outer wall of the outer die sleeve 6, and the heating coil 7 can heat the inner die sleeve 16, so that the uniform flowing of the liquid plastic in the inner layer material flow channel 9 is ensured, and the solidification at low temperature is avoided; the heat insulating layer 10 can prevent heat in each die sleeve from dissipating and keep the temperature in each die sleeve constant.
Furthermore, a flow-limiting ring 11 is installed at a step of the inner-layer material flow passage 9, and a plurality of fan-shaped holes 111 are uniformly distributed on the circumference of the flow-limiting ring 11. The flow-limiting ring 11 can buffer the liquid plastic of the inner layer, so that the stress of the liquid plastic of the inner layer is more uniform, and the pressure of the liquid plastic of the inner layer on the end part of the neck mold 18 is buffered.
Claims (5)
1. The utility model provides a cable processing is with double-deck crowded aircraft nose altogether, includes mandrel (3), bush (18) and die holder, its characterized in that: the die holder comprises an outer die sleeve (6), an intermediate die sleeve (5) and an inner die sleeve (16), the core die (3) comprises a first connecting part (301), a second connecting part (302) and a third connecting part (303) which are arranged in a step-shaped structure, the outer diameters of the first connecting part (301), the second connecting part (302) and the third connecting part (303) are sequentially reduced, a first groove is processed at the end part of the third connecting part (303), a positioning shaft sleeve (19) is coaxially arranged in the first groove, one end of the positioning shaft sleeve (19) is provided with a positioning baffle ring (12), the positioning baffle ring (12) is rotatably arranged in the first groove in a threaded manner, the die (18) comprises a cone head part and a connecting part which are integrally processed and manufactured, the connecting part is rotatably arranged on the positioning shaft sleeve (19) in the first groove, the large end surface of the cone head part is contacted with the outer end surface of the third connecting part (303), a first sealing ring (20) is arranged between the outer end face of the third connecting part (303) and the large end face of the conical head part;
the middle die sleeve (5) is coaxially sleeved on the outer side of the core die (3), the length of the middle die sleeve (5) is longer than that of the core die (3), one end of the middle die sleeve (5) is connected to the end face of the first connecting portion (301) in an abutting mode, a second sealing ring (21) is arranged between the inner wall of the middle die sleeve (5) on the side close to the first connecting portion (301) and the outer wall of the core die (3), and an inner layer material flow channel (9) of a stepped structure is formed between the inner wall of the middle die sleeve (5) on the side far away from the first connecting portion (301) and the outer wall of the core die (3);
the inner die sleeve (16) is coaxially and movably arranged at the end part of the middle die sleeve (5), an inclined inner layer material extrusion channel (22) is formed between the inner die sleeve (16) and the conical head part of the die (18), the inner layer material extrusion channel (22) is communicated with the inner layer material flow channel (9), and an inclined outer layer material extrusion channel (17) is processed inside the inner die sleeve (16);
the outer die sleeve (6) is coaxially sleeved on the outer side of the middle die sleeve (5), a first end plate (1) is arranged at one end of the outer die sleeve (6), a second end plate (14) is arranged at the other end of the outer die sleeve (6), core wire through holes (4) are formed in the centers of the first end plate (1), the core die (3), the die (18), the inner die sleeve (16) and the second end plate (14) in a penetrating mode along the axial direction of the core die (3), the first end plate (1) and the outer die sleeve (6) and the first connecting portion (301) are fixedly connected through first bolts (2), the second end plate (14) and the outer die sleeve (6), the second end plate (14) and the middle die sleeve (5) and the second end plate (14) and the inner die sleeve (16) are fixedly connected through second bolts (15), and an inner material inlet pipe (8) vertically penetrates through the outer die sleeve (6) and the middle die sleeve (5), the inner layer material inlet pipe (8) is communicated with the inner layer material flow channel (9), the outer layer material inlet pipe (13) vertically penetrates through the outer die sleeve (6), the middle die sleeve (5) and the inner die sleeve (16), and the outer layer material inlet pipe (13) is communicated with the outer layer material extrusion channel (17).
2. The double-layer co-extrusion machine head for cable processing according to claim 1, characterized in that: be provided with on interior die sleeve (16) be connected with middle die sleeve (5) and support spacer sleeve (24), support spacer sleeve (24) and interior die sleeve (16) whole processing preparation form, form slot (23) between the outer wall of support spacer sleeve (24) and the inner wall of middle die sleeve (5), be provided with grafting ring cover (25) on the inner wall of middle die sleeve (5), grafting ring cover (25) and middle die sleeve (5) whole processing preparation form, grafting ring cover (25) are pegged graft and are installed in slot (23), and the equipartition is provided with many coupling spring (26) in slot (23), the one end and the middle die sleeve (5) of coupling spring (26) are connected fixedly, and the other end is connected fixedly with interior die sleeve (16).
3. The double-layer co-extrusion machine head for cable processing according to claim 1, characterized in that: the positioning baffle ring (12) and the positioning shaft sleeve (19) are integrally processed and manufactured.
4. The double-layer co-extrusion machine head for cable processing according to claim 1, characterized in that: the heating coil (7) is spirally arranged on the inner wall of the outer die sleeve (6), and the heat insulation layer (10) is arranged on the outer wall of the outer die sleeve (6).
5. The double-layer co-extrusion machine head for cable processing according to claim 1, characterized in that: the step department of inlayer material runner (9) installs restrictor ring (11), the circumference equipartition is provided with a plurality of fan-shaped holes (111) on restrictor ring (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020764673.5U CN212219212U (en) | 2020-05-11 | 2020-05-11 | Double-layer co-extrusion machine head for cable processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020764673.5U CN212219212U (en) | 2020-05-11 | 2020-05-11 | Double-layer co-extrusion machine head for cable processing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113290820A (en) * | 2021-05-25 | 2021-08-24 | 昆明电立电缆有限公司 | Cable extrusion double-layer offset-adjustment-free co-extrusion machine head and processing technology thereof |
| CN113744937A (en) * | 2021-09-09 | 2021-12-03 | 江苏星基智能装备有限公司 | Core-adjustable cable cladding extrusion head |
| CN115384025A (en) * | 2022-09-02 | 2022-11-25 | 马鞍山市飞达波纹管制造有限公司 | Gas damping double-wall corrugated pipe production machine head structure |
| CN117310914A (en) * | 2023-11-23 | 2023-12-29 | 广东长天光电科技有限公司 | Preparation process and equipment of corrosion-resistant optical cable |
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- 2020-05-11 CN CN202020764673.5U patent/CN212219212U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290820A (en) * | 2021-05-25 | 2021-08-24 | 昆明电立电缆有限公司 | Cable extrusion double-layer offset-adjustment-free co-extrusion machine head and processing technology thereof |
| CN113290820B (en) * | 2021-05-25 | 2023-03-10 | 昆明电立电缆有限公司 | Cable extrusion double-layer deviation-adjustment-free co-extrusion machine head and processing technology thereof |
| CN113744937A (en) * | 2021-09-09 | 2021-12-03 | 江苏星基智能装备有限公司 | Core-adjustable cable cladding extrusion head |
| CN113744937B (en) * | 2021-09-09 | 2023-06-20 | 江苏星基智能装备有限公司 | Adjustable extrusion head for cladding cable |
| CN115384025A (en) * | 2022-09-02 | 2022-11-25 | 马鞍山市飞达波纹管制造有限公司 | Gas damping double-wall corrugated pipe production machine head structure |
| CN115384025B (en) * | 2022-09-02 | 2023-06-06 | 马鞍山市飞达波纹管制造有限公司 | Production machine head structure of gas damping double-wall corrugated pipe |
| CN117310914A (en) * | 2023-11-23 | 2023-12-29 | 广东长天光电科技有限公司 | Preparation process and equipment of corrosion-resistant optical cable |
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