CN117174396A - Copper strip longitudinal wrapping welding rolling production line for magnesium oxide powder insulated cable - Google Patents
Copper strip longitudinal wrapping welding rolling production line for magnesium oxide powder insulated cable Download PDFInfo
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- CN117174396A CN117174396A CN202311236819.3A CN202311236819A CN117174396A CN 117174396 A CN117174396 A CN 117174396A CN 202311236819 A CN202311236819 A CN 202311236819A CN 117174396 A CN117174396 A CN 117174396A
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- magnesium oxide
- copper strip
- brushing
- wheel
- production line
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 141
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 138
- 239000010949 copper Substances 0.000 title claims abstract description 138
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 title claims abstract description 102
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 58
- 239000000843 powder Substances 0.000 title claims abstract description 53
- 238000003466 welding Methods 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000005096 rolling process Methods 0.000 title claims abstract description 23
- 230000001680 brushing effect Effects 0.000 claims abstract description 46
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000011777 magnesium Substances 0.000 claims abstract description 41
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims description 53
- 239000002002 slurry Substances 0.000 claims description 43
- 238000000227 grinding Methods 0.000 claims description 38
- 238000003825 pressing Methods 0.000 claims description 35
- 238000007493 shaping process Methods 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 8
- 238000011282 treatment Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000007254 oxidation reaction Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract 4
- 230000017525 heat dissipation Effects 0.000 description 8
- 239000004020 conductor Substances 0.000 description 6
- 239000003085 diluting agent Substances 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 150000001879 copper Chemical class 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The application discloses a longitudinal wrapping welding rolling production line of a magnesium oxide powder insulated cable copper strip, and relates to the technical field of magnesium oxide powder insulated cables. The application has reasonable structure, improves the heat radiation performance of the cable by arranging the brushing assembly, tu Shua magnesium liquid can provide a heat transfer path between the magnesium oxide core and the copper strip, and increases the heat radiation surface area, thereby improving the heat radiation performance of the cable, reducing the heat possibly generated by the cable in the working process, tu Shua magnesium liquid can form a protective film, preventing oxidation reaction, prolonging the service life of the cable at high temperature, and Tu Shua magnesium liquid plays roles of improving the insulation performance, enhancing the bonding strength, improving the heat radiation performance and preventing oxidation reaction in the production process of the magnesium oxide powder insulated cable.
Description
Technical Field
The application relates to the technical field of magnesium oxide powder insulated cables, in particular to a copper strip longitudinal wrapping welding rolling production line of a magnesium oxide powder insulated cable.
Background
The mineral insulated fireproof cable, called MI cable for short, is one with high conductivity copper wire embedded inside one solid and tough seamless copper sheath and with compact magnesia insulating material, and the cable can maintain normal power supply for over 90min at the temperature of 950-1000 deg.c, and is used mainly in fireproof system, emergency lighting system, alarm system, automatic fire-fighting spraying system, evacuation system, military installation, etc.
For example, the application is Chinese patent with publication number of CN114709031A, and the application is characterized by that the magnesium oxide powder feeding hopper and copper pipe copper sheath magnesium oxide insulating cable filling method, the production process of the existing magnesium oxide insulating fireproof cable is that from copper strip feeding (copper core feeding, forming welded pipe, filling magnesium oxide powder, then multi-pass rolling (reducing), induction heating, finished product sizing and automatic coiling and winding, etc.), the continuous production process is continuously and automatically completed on the production line, copper strip is fed and welded into copper pipe copper sheath, copper core is moved together with copper pipe copper sheath, and filled into copper pipe copper sheath, then magnesium oxide powder is continuously fed, and continuously filled into copper pipe copper sheath. The magnesia filling device consists of a feeding hopper, a discharging hopper, a core fixing pipe and a drainage pipe, wherein magnesia powder descends to the discharging hopper from the feeding hopper by self gravity in the process of filling magnesia powder, is led into a copper strip welded pipe (copper pipe copper sheath) formed by the drainage pipe, and is knocked by a vibrating hammer to ensure that the magnesia powder in the copper pipe copper sheath is uniformly distributed so as to avoid generating gaps and residual a large amount of air. However, the magnesia powder is always piled up in the copper pipe in a fixed direction in the drainage pipe, and the magnesia powder is difficult to be uniformly distributed in the copper sheath of the copper pipe in the existing filling process due to the barrier effect of the copper core in the copper pipe, so that the compactness of the magnesia powder is unevenly distributed, and the insulation performance of the cable is affected. Meanwhile, because air remains in the copper sheath of the copper pipe in the filling process, in the high-temperature heat treatment process of the secondary annealing, oxygen remaining in the air can generate oxidation reaction with the copper core and the inner wall of the copper sheath of the copper pipe, so that the oxidation blackening of the copper core and the inner wall of the copper sheath of the copper pipe after annealing is caused, the conductivity of the fireproof cable is reduced, and the service life of the fireproof cable is shortened
In the prior art, magnesium powder is filled in a filling mode to produce the magnesium oxide powder insulated cable, and the magnesium oxide powder insulated cable is also directly produced between magnesium oxide cores, but gaps are necessarily formed between magnesium oxide powder particles of the magnesium oxide powder insulated cable produced in that mode because of the filling of the magnesium powder, so that the heat conduction of the whole cable and the service time at high temperature are affected, and the mechanical strength of a copper strip longitudinally wrapping welding part of the magnesium oxide powder insulated cable is lower than the average strength of the copper strip because of welding.
Disclosure of Invention
The application aims to provide a longitudinal wrapping, welding and rolling production line for a magnesium oxide powder insulated cable copper strip, which can effectively solve the problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions: the welding rolling production line comprises a welding mechanism and a pipe forming mechanism, wherein the welding mechanism and the pipe forming mechanism are combined to form a part of welding rolling production line, a magnesium oxide core and a copper strip are arranged in the welding mechanism and the pipe forming mechanism, a shaping mechanism is arranged on one side of the pipe forming mechanism and used for shaping the copper strip, a blank pressing assembly and a slurry brushing assembly are arranged on the upper part of the shaping mechanism, and the slurry brushing assembly is used for brushing magnesium liquid on the surfaces of the magnesium oxide core and the copper strip, wherein the blank pressing assembly is used for carrying out blank pressing treatment on the copper strip;
the shaping mechanism comprises a mounting piece, wherein an arc channel is arranged in the mounting piece, a shaping roller is rotatably arranged in one side of the arc channel, and the shaping roller is used for rolling the copper strip for preliminary bending;
the brushing slurry assembly comprises a brushing slurry cylinder rotationally connected with the mounting piece, wherein a brushing sleeve is sleeved outside the brushing slurry cylinder and is used for brushing magnesium slurry on the surfaces of the magnesium oxide core and the copper strip;
the edge pressing assembly comprises a grinding wheel and two edge folding wheels, wherein the two edge folding wheels are matched with the grinding wheel to fold the copper strip.
Preferably, a mounting groove communicated with the arc channel is formed in the mounting piece, the arc wheel is rotatably mounted in the mounting groove, a supporting block is arranged in the mounting piece, a grinding rod is arranged outside the supporting block, a placing groove is formed in the upper portion of the mounting piece, annular grooves are formed in two sides of the mounting piece, and the mounting piece is mounted on one side of the pipe forming mechanism;
the lower part of the grinding rod is in an arc shape, and the grinding rod is matched with an arc wheel to further grind the copper strip.
Preferably, the slurry brushing assembly further comprises a slurry storage box and two mounting plates fixedly connected with the mounting piece, an auxiliary wheel is rotatably mounted between the two mounting plates, and the magnesium oxide core is attached to the surface of the auxiliary wheel;
the slurry storage box is arranged in the placing groove, and the brush sleeve extends to the inside of the slurry storage box.
Preferably, the brushing assembly further comprises two connecting rods, the two connecting rods are rotationally connected with the mounting piece, a line pressing wheel is rotationally arranged between the two connecting rods, tension springs are arranged at the bottoms of the two connecting rods, and one ends of the two tension springs are fixedly connected with the mounting piece.
Preferably, the line pressing wheel is a cone with a concave middle part attached to the surface of the magnesium oxide core, and the line pressing wheel is used for applying downward force to the magnesium oxide core.
Preferably, the brushing slurry assembly comprises a supporting rod which is arranged inside the mounting piece and is positioned at one side of the brushing sleeve, an air bag is rotatably arranged on the outer surface of the supporting rod, the air bag is in a spindle shape, and the air bag is positioned between the magnesium oxide core and the copper strip.
Preferably, two the hem wheel is all rotated and is installed in the inside of annular, two one side of hem wheel all is provided with the projection, and the connecting piece is all rotated and is installed to the surface of two projections, the wheel is rotated and is installed between two connecting pieces, and the both sides of wheel are all rotated and install the bracing piece, two the one end of bracing piece is all rotated and is installed concave piece, two concave piece all with mounting fixed connection.
Preferably, a core grinding groove is formed in the outer surface of the grinding wheel, and the grinding wheel is matched with the core grinding groove to squeeze the magnesium oxide core.
In summary, the application has the technical effects and advantages that:
1. according to the application, the structure is reasonable, the heat dissipation performance of the cable is improved through the arranged brushing assembly, the Tu Shua magnesium liquid can provide a heat transfer path between the magnesium oxide core and the copper strip, and the heat dissipation surface area is increased, so that the heat dissipation performance of the cable is improved, the heat possibly generated by the cable in the working process is reduced, the Tu Shua magnesium liquid can form a layer of protective film, the occurrence of oxidation reaction is prevented, the service life of the cable at high temperature is prolonged, and the Tu Shua magnesium liquid plays the roles of improving the insulation performance, enhancing the bonding strength, improving the heat dissipation performance and preventing oxidation reaction in the production process of the magnesium oxide powder insulated cable;
2. the edge pressing assembly provided by the application has the advantages that in the production process of the magnesium oxide powder insulated cable, the cable copper pipe is folded and then is drawn into the pipe, so that the compactness of the cable conductor can be improved, the gap between the cable conductor and the insulating layer can be reduced, the compactness of the conductor can be improved, and meanwhile, the mechanical strength of the cable can be improved, so that the cable is firmer and more stable in the use process;
the shape of the cable copper pipe is more regular and compact and is not easy to deform, so that the subsequent process operation such as coating and wrapping of an insulating layer is easier and more accurate, and the overall quality and performance of the cable are maintained.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a first view perspective structure of a copper strip longitudinal wrapping welding rolling production line of a magnesium oxide powder insulated cable;
fig. 2 is a schematic view of a second perspective three-dimensional structure of a copper strip longitudinal wrapping welding rolling production line of a magnesium oxide powder insulated cable;
fig. 3 is a schematic diagram of a third view perspective connection structure of a copper strip longitudinal wrapping welding rolling production line of a magnesium oxide powder insulated cable;
FIG. 4 is a schematic view of a three-dimensional connection structure of the shaping mechanism, the brushing assembly and the blank holder assembly;
FIG. 5 is a cross-sectional view of a first perspective three-dimensional connecting structure of the shaping mechanism;
FIG. 6 is a cross-sectional view of a second perspective view of the molding mechanism;
FIG. 7 is a schematic view of a three-dimensional connection of the shaping mechanism, the brushing assembly and the binder assembly;
FIG. 8 is a schematic view of a three-dimensional connection of a binder assembly and a shaping mechanism;
FIG. 9 is a schematic view of a three-dimensional connection structure of the blank holder assembly;
FIG. 10 is a schematic plan view of a binder assembly;
FIG. 11 is a schematic cross-sectional view of a copper strip;
FIG. 12 is a schematic view of a three-dimensional connection structure of the brush assembly;
FIG. 13 is a schematic view of a three-dimensional connection structure of an air bag and a support rod;
FIG. 14 is a schematic view of a three-dimensional connection of a mounting plate and an auxiliary wheel;
fig. 15 is a schematic view of a three-dimensional connection structure of the brush sleeve and the brush slurry cylinder.
In the figure: 1. a welding mechanism; 2. a tube forming mechanism; 3. a shaping mechanism; 31. a mounting member; 32. a mounting groove; 33. shaping roller; 34. an arc path; 35. a support block; 36. a placement groove; 37. an arc wheel; 38. grinding the rod; 39. a ring groove; 4. a blank pressing assembly; 41. a flanging wheel; 42. a grinding wheel; 43. a support rod; 44. a concave block; 45. a connecting piece; 46. a core grinding groove; 5. a brushing assembly; 51. a mounting plate; 52. an auxiliary wheel; 53. a connecting rod; 54. a wire pressing wheel; 55. an air bag; 56. a tension spring; 57. a brush sleeve; 58. a support bar; 59. a slurry storage box; 511. brushing a slurry cylinder; 6. a magnesium oxide core; 7. copper strips.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to the welding rolling production line for the longitudinal wrapping of the magnesium oxide powder insulated cable copper strips, which is shown in fig. 1-15, comprises a welding mechanism 1 and a tube forming mechanism 2, wherein the welding mechanism 1 and the tube forming mechanism 2 are combined into a part of the welding rolling production line, a magnesium oxide core 6 and a copper strip 7 are arranged in the welding mechanism 1 and the tube forming mechanism 2, a shaping mechanism 3 is arranged on one side of the tube forming mechanism 2, the shaping mechanism 3 is used for shaping the copper strip 7, a blank pressing assembly 4 and a slurry brushing assembly 5 are arranged on the upper part of the shaping mechanism 3, the slurry brushing assembly 5 is used for brushing magnesium liquid on the surfaces of the magnesium oxide core 6 and the copper strip 7, and the blank pressing assembly 4 is used for carrying out blank pressing treatment on the copper strip 7;
specifically, when the magnesium oxide powder insulated cable is processed and produced, the copper strips 7 pass through the shaping mechanism 3 and then are sent into the pipe forming mechanism 2 and the welding mechanism 1 through the edge pressing assembly 4, and the magnesium oxide cores 6 sequentially pass through the slurry brushing assembly 5 and the edge pressing assembly 4 and finally enter the pipe forming mechanism 2 and the welding mechanism 1;
the copper strip 7 is sent to the brushing assembly 5 to be coated with magnesium slurry after being primarily bent by the shaping mechanism 3, the copper strip 7 is in a bent arc shape at the moment, subsequent plastic forming can be facilitated, when the surface of the copper strip 7 is coated with magnesium slurry, the brushing assembly 5 is also used for coating the surface of the magnesium oxide core 6 with magnesium slurry, then the copper strip 7 and the magnesium oxide core 6 are simultaneously sent to the edge pressing assembly 4 to be subjected to subsequent processing, when the copper strip 7 is processed by the edge pressing assembly 4, the processed copper strip 7 is in the shape shown in fig. 11, the edges with the folded edges are arranged on the two sides of the copper strip 7, and the edge pressing assembly 4 is used for enabling the magnesium oxide core 6 to be attached to the surface of the copper strip 7 when the copper strip 7 is folded, so that the magnesium oxide core 6 can be tightly wrapped after the copper strip 7 is processed by the subsequent tube mechanism 2;
after the copper strip 7 is folded to be in the shape shown in fig. 11, after the copper strip 7 is processed to be in the shape of a copper tube, a welding line is formed at the welding position of the inner wall of the copper tube because of the edge with the folded edge, and the thickness of the copper tube at the welding line is larger than the average thickness of the copper strip 7, so that a reinforcing rib is formed on the inner wall of the copper tube processed by the copper strip 7, the copper tube can be prevented from being welded thoroughly or the thickness of the copper tube at the welding position is caused to be smaller than the average thickness of the copper strip 7 when the copper strip 7 is welded, when the whole magnesium oxide powder insulated cable is processed to be wound, the welding position of the cable can be prevented from being cracked, the integral strength of the whole copper tube is increased, and the stronger rib formed at the welding position can also squeeze the magnesium oxide core 6 to be attached to the surface of the copper strip 7 when the magnesium oxide core 6 is wrapped, so that magnesium paste coated on the surfaces of the copper strip 7 and the magnesium oxide core 6 is further squeezed, and the magnesium paste is filled more tightly;
after the magnesium oxide core 6 is filled into the copper strip 7, the copper strip 7 is sent to the pipe forming mechanism 2 to be drawn into a pipe shape, then preliminary welding is continued through the welding mechanism 1, and the magnesium oxide powder insulated cable manufactured after welding is coiled through the cooling and winding mechanism, so that subsequent production and manufacturing are facilitated.
Wherein, the preparation of the insulating magnesium liquid can be carried out by the following steps:
1. preparing the required materials: the main materials are magnesia powder and diluent, the magnesia powder can be industrial grade magnesia powder with high purity, and the diluent can be absolute alcohol, industrial grade alcohol solvent or water.
2. Pretreatment of magnesia powder: the magnesium oxide powder is pretreated to remove impurities and insoluble substances, and the pretreatment can comprise the steps of screening, washing or high-temperature calcination, etc., so as to ensure the purity and uniformity of the magnesium oxide powder.
3. Preparing magnesium liquid: the pretreated magnesia powder and the diluent are mixed according to a certain proportion. During the mixing process, the magnesia powder needs to be fully stirred to be uniformly dispersed in the diluent, and bubbles are avoided as much as possible.
4. Adjusting the concentration of the liquid: the concentration of the magnesium solution can be controlled according to actual needs. The concentration can be adjusted by changing the ratio of the magnesia powder to the diluent.
5. And (3) further processing: the magnesium solution can be further treated by high-speed stirring, filtering, centrifuging and the like to remove impurities or precipitates in the magnesium solution, so as to obtain purer and uniform magnesium solution.
6. Testing and quality control: the manufactured magnesium liquid needs to be tested, including measuring parameters such as resistivity, viscosity, PH value and the like of the liquid, and the manufactured magnesium liquid meets relevant standards and requirements through quality control measures.
Firstly, preparing magnesium oxide powder and a diluent, then, carrying out pretreatment, mixing, concentration adjustment, further treatment, testing, quality control and the like on the magnesium liquid to finally obtain the magnesium liquid meeting the requirements, wherein the specific operation of the steps can be adjusted and optimized according to the actual requirements and material characteristics.
As shown in fig. 5 and 6, the shaping mechanism 3 comprises a mounting piece 31, wherein an arc channel 34 is arranged in the mounting piece 31, a shaping roller 33 is rotatably arranged in one side of the arc channel 34, the shaping roller 33 is used for rolling the copper strip 7 for preliminary bending, and the shaping roller 33 is in a spindle shape and can be matched with the arc channel 34 to shape the copper strip 7;
the inside of the mounting piece 31 is provided with a mounting groove 32 communicated with the arc channel 34, the inside of the mounting groove 32 is rotatably provided with an arc wheel 37, the inside of the mounting piece 31 is provided with a supporting block 35, the outside of the supporting block 35 is provided with a grinding rod 38, the upper part of the mounting piece 31 is provided with a placing groove 36, the two sides of the mounting piece 31 are provided with annular grooves 39, and the mounting piece 31 is arranged on one side of the pipe forming mechanism 2;
the lower part of the grinding rod 38 is in an arc shape, and the grinding rod 38 is matched with the arc wheel 37 to further grind the copper strip 7.
It should be noted that, the initial copper strip 7 is wound on the wire reel, then the copper strip enters the arc channel 34 along with the pulling of the pulling wire, and after the copper strip enters the arc channel 34, the bottom surface of the arc channel 34 is designed to be in a curved arc shape, the copper strip 7 can be attached to the bottom wall of the arc channel 34 along with the extrusion of the shaping roller 33, the copper strip 7 extruded by the shaping roller 33 will deform to be in a curved arc shape, and the subsequent tube pulling can be facilitated along with the continuous pulling of the copper strip 7 via the grinding rod 38 and the further shaping of the arc wheel 37.
As shown in fig. 12 to 15, the brush slurry assembly 5 comprises a brush slurry cylinder 511 rotatably connected with the mounting member 31, a brush sleeve 57 is sleeved outside the brush slurry cylinder 511, and the brush sleeve 57 is used for brushing magnesium slurry on the surfaces of the magnesium oxide core 6 and the copper strip 7;
the brushing assembly 5 further comprises a slurry storage box 59 and two mounting plates 51 fixedly connected with the mounting piece 31, an auxiliary wheel 52 is rotatably mounted between the two mounting plates 51, and the magnesium oxide core 6 is attached to the surface of the auxiliary wheel 52;
the stock box 59 is provided inside the placement groove 36, and the brush holder 57 extends to the inside of the stock box 59.
Furthermore, after the copper strip 7 is drawn into the arc channel 34, the magnesium oxide core 6 moves synchronously with the drawing of the copper strip 7, the magnesium oxide core 6 is initially moved in an auxiliary way by the auxiliary wheel 52 to prevent the magnesium oxide core 6 from breaking during the drawing of the magnesium oxide core 6, the magnesium oxide core 6 will drive the slurry brushing cylinder 511 to rotate when moving, because the slurry brushing cylinder 511 is in the shape shown in fig. 15, the surface of the magnesium oxide core 6 can be closely attached, and the brush sleeve 57 arranged outside the slurry brushing cylinder 511 can increase friction force to drive the slurry brushing cylinder 511 to rotate when the magnesium oxide core 6 moves, and meanwhile, the brush sleeve 57 will also brush the surface of the magnesium oxide core 6 with magnesium slurry along with continuous rotation;
when brush cover 57 rotates in order to supplement magnesium thick liquid brush cover 57 at any time will extend to the inside of storing up thick liquid box 59, along with brush cover 57 rotation can dip in the magnesium thick liquid of getting in storing up thick liquid box 59 at any time, and storing up thick liquid box 59 is provided with the baffle cotton that the separation magnesium thick liquid removed, can prevent excessive overflow of magnesium thick liquid, and because brush cover 57's setting is between magnesium oxide core 6 and copper strips 7, brush cover 57's surface will also contact copper strips 7, so brush cover 57 will also brush magnesium thick liquid to copper strips 7's surface after brushing magnesium thick liquid to magnesium oxide core 6 surface, make follow-up magnesium oxide core 6 by copper strips 7 after parcel can make magnesium oxide core 6 laminate copper strips 7 more because of the joining of magnesium thick liquid, reduce the clearance that the magnesium powder was filled.
As shown in fig. 12, the brushing assembly 5 further includes two connecting rods 53, the two connecting rods 53 are rotatably connected with the mounting member 31, a wire pressing wheel 54 is rotatably installed between the two connecting rods 53, tension springs 56 are disposed at bottoms of the two connecting rods 53, and one ends of the two tension springs 56 are fixedly connected with the mounting member 31.
The wire pressing wheel 54 is a cone with a concave middle part, which is attached to the surface of the magnesium oxide core 6, and the wire pressing wheel 54 is used for applying downward force to the magnesium oxide core 6.
Furthermore, in order to make the magnesia core 6 more adhered to the surface of the brush sleeve 57, a pressing wheel 54 is arranged to press the upper portion of the magnesia core 6, the tension spring 56 is contracted to drive the connecting rod 53 to move downwards to drive the pressing wheel 54 to press the magnesia core 6, the pressing wheel 54 is arranged in the shape shown in fig. 12, when the magnesia core 6 moves, the pressing wheel 54 is driven to rotate, and the pressing wheel 54 applies downward pressure to continuously adjust the angle of the movement direction of the magnesia core 6 while rotating.
As shown in fig. 13, the brush slurry assembly 5 includes a support rod 58 disposed inside the mounting member 31 and located at one side of the brush sleeve 57, an air bag 55 is rotatably installed on the outer surface of the support rod 58, the air bag 55 is in a spindle shape, the air bag 55 is located between the magnesium oxide core 6 and the copper strip 7, the air bag 55 is made of a hollow rubber material, and the surface of the air bag 55 is provided with anti-slip patterns.
Further, when the above-mentioned medium-pressure wire wheel 54 applies downward pressure to the magnesium oxide core 6, the magnesium oxide core 6 is more adhered to the surface of the brush sleeve 57, and the magnesium oxide core 6 is coated with the magnesium oxide slurry by the brush sleeve 57, so that the extrusion air bag 55 is deformed into the shape as shown in fig. 13 along with the movement of the magnesium oxide core 6, and when the air bag 55 is deformed, the surface of the magnesium oxide core 6 is rougher, so that the extrusion air bag 55 can be driven to rotate on the surface of the supporting rod 58, and the magnesium slurry on the surfaces of the magnesium oxide core 6 and the copper strip 7 is coated and scraped when the extrusion air bag 55 rotates, so that the magnesium slurry is coated and brushed more uniformly.
Wherein, in the process of producing the magnesium oxide powder insulated cable, the following effects can be achieved by brushing magnesium liquid between the magnesium oxide core 6 and the copper strip 7:
the heat dissipation performance of the cable is improved: tu Shua the magnesium liquid can provide a heat transfer path between the magnesium oxide core 6 and the copper strip 7, and increase the heat dissipation surface area, so that the heat dissipation performance of the cable is improved, and the heat possibly generated by the cable in the working process is reduced;
preventing oxidation reaction between the magnesium oxide core 6 and the copper tape 7: the magnesium oxide core 6 and the copper strip 7 are easy to generate oxidation reaction when exposed in the air for a long time, so that the electric conduction and insulation performance of the cable are affected, a protective film can be formed by Tu Shua magnesium liquid, the oxidation reaction is prevented, and the service life of the cable at high temperature is prolonged;
tu Shua magnesium liquid has the effects of improving insulation performance, enhancing bonding strength, improving heat dissipation performance and preventing oxidation reaction in the production process of the magnesium oxide powder 6 insulated cable.
As shown in fig. 9-11, the edge pressing assembly 4 includes a grinding wheel 42 and two edge folding wheels 41, the two edge folding wheels 41 cooperating with the grinding wheel 42 for folding the copper strip 7.
The two edge folding wheels 41 are rotatably arranged in the annular groove 39, protruding columns are arranged on one sides of the two edge folding wheels 41, connecting pieces 45 are rotatably arranged on the outer surfaces of the two protruding columns, the grinding wheel 42 is rotatably arranged between the two connecting pieces 45, supporting rods 43 are rotatably arranged on two sides of the grinding wheel 42, concave blocks 44 are rotatably arranged at one ends of the two supporting rods 43, and the two concave blocks 44 are fixedly connected with the mounting piece 31;
the connecting piece 45 can also be designed to be a structure with the length adjusted by a screw rod, and the distance between the grinding wheel 42 and the flanging wheel 41 can be adjusted along with the overall length change of the connecting piece 45, so that copper strips 7 with different sizes can be processed.
The outer surface of the grinding wheel 42 is provided with a grinding core groove 46, and the grinding wheel 42 is matched with the grinding core groove 46 to squeeze the magnesium oxide core 6.
Furthermore, after the magnesium oxide core 6 and the copper strip 7 are subjected to the above-mentioned brushing, the copper strip 7 is folded by the grinding wheel 42 and the folding wheel 41, and the magnesium oxide core 6 is pressed by the core grinding groove 46 on the grinding wheel 42 to be more adhered to the surface of the copper strip 7 while the copper strip 7 is folded;
because the design of the grinding wheel 42 and the flanging wheel 41 is in the shape shown in fig. 10, the copper strip 7 after edge pressing is in the shape shown in fig. 11, so that the copper strip 7 at the welding position can be thicker after the copper strip 7 is bent, and the phenomenon of welding penetration of a copper pipe can not be caused.
In the production process of the magnesium oxide powder insulated cable, the cable copper pipe is folded and then drawn into a pipe, so that the compactness of the cable conductor can be improved, the gap between the cable conductor and the insulating layer can be reduced, the compactness of the conductor can be improved, and meanwhile, the mechanical strength of the cable can be improved, so that the cable is firmer and more stable in the use process;
the shape of the cable copper pipe is more regular and compact and is not easy to deform, so that the subsequent process operation such as coating and wrapping of an insulating layer is easier and more accurate, and the overall quality and performance of the cable are maintained.
The magnesium oxide powder insulated cable after production is detected, and the detection standard is as follows:
the acceptance length of the finished product of the product is not less than 3 km, and the product meets the national standard of GB/T13033-2007.
The acceptance specifications are as follows:
finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present application, and although the present application 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, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present application.
Claims (8)
1. The utility model provides a roll production line is welded in insulating cable copper strips of magnesia powder indulges package, includes welding mechanism (1) and pipe formation mechanism (2), welding mechanism (1) and pipe formation mechanism (2) make up into partial welding roll production line, welding mechanism (1) and pipe formation mechanism (2)'s inside all is provided with magnesia core (6) and copper strips (7), its characterized in that: one side of the pipe forming mechanism (2) is provided with a shaping mechanism (3), the shaping mechanism (3) is used for shaping the copper strip (7), the upper part of the shaping mechanism (3) is provided with a blank pressing component (4) and a brushing component (5), the brushing component (5) is used for brushing magnesium liquid on the surfaces of the magnesium oxide core (6) and the copper strip (7), and the blank pressing component (4) is used for carrying out blank pressing treatment on the copper strip (7);
the shaping mechanism (3) comprises a mounting piece (31), an arc channel (34) is arranged in the mounting piece (31), a shaping roller (33) is rotatably arranged in one side of the arc channel (34), and the shaping roller (33) is used for rolling the copper strip (7) for preliminary bending;
the brushing slurry assembly (5) comprises a brushing slurry cylinder (511) rotationally connected with the mounting piece (31), a brushing sleeve (57) is sleeved outside the brushing slurry cylinder (511), and the brushing sleeve (57) is used for brushing magnesium slurry on the surfaces of the magnesium oxide core (6) and the copper strip (7);
the edge pressing assembly (4) comprises a grinding wheel (42) and two edge folding wheels (41), and the two edge folding wheels (41) are matched with the grinding wheel (42) to fold the copper strip (7).
2. The magnesium oxide powder insulated cable copper strip longitudinal wrapping welding rolling production line according to claim 1, wherein: the installation device comprises an installation piece (31), wherein an installation groove (32) communicated with an arc channel (34) is formed in the installation piece (31), an arc wheel (37) is installed in the installation groove (32) in a rotating mode, a supporting block (35) is arranged in the installation piece (31), a grinding rod (38) is arranged outside the supporting block (35), a placing groove (36) is formed in the upper portion of the installation piece (31), annular grooves (39) are formed in two sides of the installation piece (31), and the installation piece (31) is installed on one side of a pipe forming mechanism (2);
the lower part of the grinding rod (38) is in an arc shape, and the grinding rod (38) is matched with an arc wheel (37) to further grind the copper strip (7).
3. The magnesium oxide powder insulated cable copper strip longitudinal wrapping welding rolling production line according to claim 1, wherein: the slurry brushing assembly (5) further comprises a slurry storage box (59) and two mounting plates (51) fixedly connected with the mounting piece (31), an auxiliary wheel (52) is rotatably mounted between the two mounting plates (51), and the magnesium oxide core (6) is attached to the surface of the auxiliary wheel (52);
the slurry storage box (59) is arranged in the placing groove (36), and the brush sleeve (57) extends to the inside of the slurry storage box (59).
4. The magnesium oxide powder insulated cable copper strip longitudinal wrapping welding rolling production line according to claim 1, wherein: the brushing assembly (5) further comprises two connecting rods (53), the two connecting rods (53) are rotationally connected with the mounting piece (31), a wire pressing wheel (54) is rotationally installed between the two connecting rods (53), tension springs (56) are arranged at the bottoms of the two connecting rods (53), and one ends of the two tension springs (56) are fixedly connected with the mounting piece (31).
5. The magnesium oxide powder insulated cable copper strip longitudinal wrapping welding rolling production line according to claim 4, wherein: the wire pressing wheel (54) is a cone with a concave middle part attached to the surface of the magnesium oxide core (6), and the wire pressing wheel (54) is used for applying downward force to the magnesium oxide core (6).
6. The magnesium oxide powder insulated cable copper strip longitudinal wrapping welding rolling production line according to claim 1, wherein: the slurry brushing assembly (5) comprises a supporting rod (58) which is arranged inside the mounting piece (31) and is positioned on one side of the brush sleeve (57), an air bag (55) is rotatably arranged on the outer surface of the supporting rod (58), the air bag (55) is in a spindle shape, and the air bag (55) is positioned between the magnesium oxide core (6) and the copper strip (7).
7. The magnesium oxide powder insulated cable copper strip longitudinal wrapping welding rolling production line according to claim 1, wherein: two the hem wheel (41) is all rotated and is installed the inside at annular (39), two one side of hem wheel (41) all is provided with the projection, and the surface of two projections is all rotated and is installed connecting piece (45), pinch roller (42) is rotated and is installed between two connecting pieces (45), and pinch roller (42) both sides are all rotated and are installed bracing piece (43), two the one end of bracing piece (43) is all rotated and is installed concave piece (44), two concave piece (44) all with installed piece (31) fixed connection.
8. The magnesium oxide powder insulated cable copper strip longitudinal wrapping welding rolling production line according to claim 7, wherein: the outside of the grinding wheel (42) is provided with a core grinding groove (46), and the grinding wheel (42) is matched with the core grinding groove (46) to squeeze the magnesium oxide core (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311236819.3A CN117174396A (en) | 2023-09-25 | 2023-09-25 | Copper strip longitudinal wrapping welding rolling production line for magnesium oxide powder insulated cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311236819.3A CN117174396A (en) | 2023-09-25 | 2023-09-25 | Copper strip longitudinal wrapping welding rolling production line for magnesium oxide powder insulated cable |
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| CN117174396A true CN117174396A (en) | 2023-12-05 |
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| CN202311236819.3A Withdrawn CN117174396A (en) | 2023-09-25 | 2023-09-25 | Copper strip longitudinal wrapping welding rolling production line for magnesium oxide powder insulated cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117444459A (en) * | 2023-12-22 | 2024-01-26 | 合肥超旭机电设备有限公司 | Copper strip longitudinal wrapping welding machine for magnesium oxide powder insulated cable rolling process |
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2023
- 2023-09-25 CN CN202311236819.3A patent/CN117174396A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117444459A (en) * | 2023-12-22 | 2024-01-26 | 合肥超旭机电设备有限公司 | Copper strip longitudinal wrapping welding machine for magnesium oxide powder insulated cable rolling process |
| CN117444459B (en) * | 2023-12-22 | 2024-03-15 | 合肥超旭机电设备有限公司 | Copper strip longitudinal wrapping welding machine for magnesium oxide powder insulated cable rolling process |
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Application publication date: 20231205 |