Composite wire rod solid-liquid continuous casting production line

Abstract

The application relates to the technical field of clad material continuous casting, and discloses a solid-liquid continuous casting production line for composite wires, which comprises a continuous casting device, the continuous casting device comprises a melting furnace and a composite furnace which are in communication with each other, and heating and heat-preserving assemblies are arranged outside the melting furnace and the composite furnace; a composite cavity is arranged in the composite furnace, a plurality of composite molds are arranged in the composite cavity, and crystallizers are arranged below the composite molds. The technical scheme can improve the uniformity of copper liquid cladding and the efficiency of copper liquid cladding.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous casting of cladding materials, and in particular to a composite wire solid-liquid continuous casting production line. Background Art

[0002] In recent years, my country's rail transit has experienced rapid development, with railway mileage increasing year by year. High-speed railways, in particular, have seen rapid growth. my country now boasts the world's longest operating high-speed railway mileage and the largest high-speed railway under construction, significantly boosting national economic and social development. High-speed railway operation generates enormous amounts of energy, with currents exceeding 1kA. Maintaining safe system operation requires reliable electrical grounding. A through-ground cable is a cable used for unified grounding of railway signal systems. It maintains a consistent ground potential across a wide range of operating points within the railway electrical system, ensuring safe and reliable grounding of system equipment, eliminating potential imbalance currents caused by potential differences between different devices, and providing effective and reliable protection for personnel and equipment. Currently, through-ground cables are extensively installed along high-speed railway lines. The ground wires and metal facilities in signal machinery rooms are connected to the through-ground cables to ensure a good connection between electrical equipment and the earth.

[0003] A through-ground wire usually consists of an inner copper stranded wire and an outer protective sheath. After many technological innovations, the through-ground wire has now developed into a structure of copper alloy-coated copper stranded wire. The production methods of through-ground wires mainly include the cladding welding process and the seamless tube sleeve drawing process. Due to the presence of welds and the difference between the structure and the matrix at the weld, the cladding welding process is prone to corrosion in the weld area in the soil, inconsistent welding quality, cracking during use, affecting service life, and posing safety hazards. It has now been gradually eliminated by the market. In order to solve the problem of welds, some domestic companies have tried to adopt the seamless tube sleeve drawing process, which prefabricates extra-long brass alloy tubes, passes the copper stranded wire through them, and then undergoes multiple drawing and annealing processes. This process can produce seamless sheathed ground wires, but the following problems still exist: 1. Prefabricating extra-long brass tubes is difficult, wire length is limited, and costs are high; 2. The sheathing process is not smooth, with a low degree of automation and low production efficiency; 3. Brass is repeatedly drawn in vain, resulting in a low yield; 4. The tubes are prone to cracking and have quality defects. Therefore, the solid / liquid composite continuous casting process came into being. The solid / liquid composite continuous casting process involves inserting the inner metal (copper wire / copper stranded wire) into a mold, melting the outer metal (copper liquid), and then allowing the copper liquid to enter the mold through a guide tube and evenly distribute around the inner conductor in the mold. As the mold cools, the outer metal liquid solidifies and eventually evenly and seamlessly covers the outside of the core material. Under the action of a traction machine, the composite wire is continuously pulled out. Current solid / liquid composite continuous casting processes typically rely on solid / liquid composite continuous casting equipment. This equipment includes a crucible for heating molten copper and a forming mold. A flow conduit connects the crucible and the forming mold, directing the molten copper into the mold for bonding with the copper wire. However, current solid / liquid composite continuous casting equipment can only produce single-strand continuous casting composite lines, resulting in low production efficiency and high energy consumption. Summary of the Invention

[0004] The present invention aims to provide a composite wire solid-liquid continuous casting production line to solve the problem of low production efficiency of current solid-liquid composite continuous casting equipment.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a composite wire solid-liquid continuous casting production line, including a continuous casting device, the continuous casting device includes a melting furnace and a composite furnace connected to each other, and the outside of the melting furnace and the composite furnace are both provided with heating and insulation components; a composite cavity is provided in the composite furnace, and a plurality of composite molds are provided in the composite cavity, and a crystallizer is provided under the composite mold.

[0006] The principle and advantage of this solution are: in actual application, in this technical solution, the melting furnace is used to heat the copper liquid, and the composite furnace is used to composite the copper wire and the copper liquid. The heated copper liquid flows into the composite mold in the composite cavity and is evenly distributed around the copper wire to achieve the coating of the core material (copper wire). In this technical solution, by arranging multiple composite molds in the composite cavity, it is possible to achieve simultaneous production of multiple composite wires, greatly improving the processing efficiency. In addition, in this technical solution, the copper liquid first flows into the composite cavity and then overflows into the composite mold, rather than pouring the copper liquid from one side as in the prior art. On the one hand, it can improve the uniformity of the copper liquid coating, and at the same time, it can also further improve the efficiency of the copper liquid coating.

[0007] Preferably, as an improvement, the composite mold includes a mold body, an upper part of the mold body is axially penetrated with a wire feed hole for the copper wire to pass through, a lower part is provided with a wire solidification and sizing hole, the outer wall of the mold body is provided with a liquid inlet hole connected to the wire feed hole, the diameter of the wire feed hole above the liquid inlet hole is larger than the diameter of the solidification and sizing hole below the liquid inlet hole, and a threading positioning mold is provided in the wire feed hole, and the threading positioning mold can slide up and down along the axis of the wire feed hole.

[0008] In this technical solution, the mold body is an overall cylindrical structure, in which the wire inlet hole is used to place the threading positioning mold, and the liquid inlet hole is a channel for the overflow of copper liquid into the mold cavity. By setting the wire inlet hole to a structure in which the aperture of the upper part is larger than the aperture of the lower part, and setting the threading positioning mold in the upper wire inlet hole, when the lower part of the mold body or the crystallizer fails, or other faults require the replacement of copper wire, the threading positioning mold can be driven to slide downward along the axis of the wire inlet hole, so that the threading positioning mold blocks the liquid inlet hole, preventing the overflow of copper liquid from entering the mold body, and the copper wire can be quickly replaced. In addition, the setting of the threading positioning mold can also ensure the positioning and centering of the core material and ensure the uniformity of the subsequent continuous casting coating.

[0009] Preferably, as an improvement, a glass tube for centering the core material is provided inside the top end of the threading and positioning mold, and the glass tube is coaxially arranged with the composite mold.

[0010] In this technical solution, by arranging a glass tube inside the threading and positioning mold, on the one hand, the centering of the copper wire can be ensured, thereby ensuring the uniformity of the coating; on the other hand, the glass tube can also play a role in heat insulation, preventing the copper wire from being heated too high before being coated, and avoiding the core metal melting or excessive fusion of the interface after the copper liquid is coated.

[0011] Preferably, as an improvement, two liquid inlet holes are provided, and the two liquid inlet holes are symmetrically arranged with the axis of the wire inlet hole as the center, the height of the liquid inlet hole is 5-50mm, and the width of the liquid inlet hole is 1 / 3-2 / 3 of the outer diameter of the mold body.

[0012] In this technical solution, by setting two liquid inlet holes, and the two liquid inlet holes are symmetrically arranged, the copper liquid in the composite cavity can be overflowed and coated along both sides of the copper wire at the same time, so that the forces on both sides of the copper wire are consistent. On the one hand, it can ensure the uniformity of the copper liquid coating, and on the other hand, it can also improve the efficiency of the copper wire coating. The height of the liquid inlet hole will affect the bonding effect between the copper liquid and the copper wire and the speed of continuous casting. If the height is too small, the continuous casting speed will decrease, affecting the processing efficiency and causing the copper liquid to have a poor bonding effect with the copper wire. The width of the liquid inlet hole mainly determines the contact area between the copper wire in the mold body and the copper liquid in the composite cavity, affecting the speed of the copper liquid entering the mold body, and thus affecting the stability of the temperature field inside the mold body. If the width of the liquid inlet hole is too large, it will affect the strength of the mold itself and be easily damaged. The above parameter range can ensure the stability of the temperature field in the mold body and the service life.

[0013] Preferably, as an improvement, a melting chamber is provided inside the melting furnace, a melting furnace outlet is provided at the bottom of the melting chamber, a guide tube is connected between the melting furnace outlet and the composite chamber, and a stopper rod for sealing the melting furnace outlet is movably connected inside the melting furnace.

[0014] In this technical solution, the melting chamber is used to melt the molten copper. After the molten copper is melted, it will be transferred to the composite chamber along the liquid outlet of the melting furnace through the guide pipe. By arranging a stopper rod in the melting furnace and selectively inserting the stopper rod into the liquid outlet of the melting furnace, the flow of the molten copper can be blocked, which facilitates the control of the start and stop of continuous casting and is easy to operate.

[0015] Preferably, as an improvement, the bottom of the melting furnace is provided with an adjustment mechanism for adjusting the position and height of the melting furnace.

[0016] In this technical solution, the melting furnace and composite furnace are connected by a guide tube. After use, the guide tube and the melting furnace and composite furnace are separated and reassembled when they are reactivated. By providing an adjustment mechanism at the bottom of the melting furnace, the position of the melting furnace and the support height can be flexibly adjusted, so that the melting furnace and composite chamber can be better coordinated, and the structural design is reasonable.

[0017] Preferably, as an improvement, the adjustment mechanism includes a height adjustment component and a position adjustment component, the height adjustment component includes a base, at least two height adjustment bolts and a fastening nut, the bottoms of the height adjustment bolts are rotatably connected to the base, the tops of the height adjustment bolts are threadedly connected to the bottom of the melting furnace, and the fastening nuts are fixedly sleeved on the lower part of the height adjustment bolts; the position adjustment component includes a slide rail, a gear, a rack and an adjusting wheel, the base is laterally slidably connected to the slide rail, the rack is fixed to the bottom of the base, the gear is rotatably connected to the slide rail and the gear is engaged with the rack, the gear is coaxially fixed with a drive shaft, one end of the drive shaft passes through the slide rail and is coaxially fixed with the adjusting wheel.

[0018] In this technical solution, the height adjustment component is used to adjust the height position of the melting furnace. During adjustment, the fastening nut is rotated by a wrench to drive the height adjustment bolt to rotate. During the rotation of the height adjustment bolt, it will move longitudinally relative to the melting furnace, thereby realizing the adjustment of the height of the melting furnace; the position adjustment component is used to adjust the front, back, left and right positions of the melting furnace. During adjustment, the adjusting wheel is rotated to drive the gear to rotate through the drive shaft, and then drive the rack engaged with the gear to move, so that the base slides along the slide rail, so that the position of the melting furnace can be adjusted. The operation is very convenient, and the position and height adjustment accuracy is high.

[0019] Preferably, as an improvement, the crystallizer includes a cooling mold and a cooling chamber wrapped around the outside of the cooling mold, and the cooling mold circumferentially wraps around the outside of the discharge port of the mold body.

[0020] In this technical solution, a cooling mold is placed under the mold body. After the molten copper coats the copper wire, the outer layer of molten copper solidifies through cooling. A cooling chamber is used to cool the mold. In practice, this can be achieved by passing cooling water through the cooling chamber, resulting in a simple structure and high heat exchange efficiency.

[0021] Preferably, as an improvement, the discharge end of the crystallizer is provided with a traction device and a wire-taking device in sequence, and the wire-taking device includes a driving swing arm and a wire-taking drum.

[0022] In this technical solution, the composite wire after continuous casting is transferred to the take-up device for winding under the traction of the traction device, wherein the driving swing arm is used to change the direction of the composite wire to be wound and make it fit on the take-up reel, and then the take-up reel can rotate to wind the composite wire on the take-up reel, with a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front longitudinal sectional view of the continuous casting device in an embodiment of the present invention.

[0024] Figure 2 for Figure 1 Top view of .

[0025] Figure 3 This is the front view of the driving swing arm.

[0026] Figure 4 This is a top view of the driven swing arm (the rotating motor is hidden).

[0027] Figure 5 Schematic diagram of the structure of the traction device in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following is further described in detail through specific implementation methods:

[0029] The figure marks in the drawings of the specification include: melting furnace 1, melting chamber 2, coil 3, melting furnace liquid outlet 4, composite furnace 5, stopper rod 6, base 7, height adjustment bolt 8, slide rail 9, rack 10, adjusting wheel 11, composite chamber 12, mold body 13, wire inlet hole 14, liquid inlet hole 15, threading and positioning mold 16, cooling mold 17, cooling chamber 18, guide pipe 19, fixed seat 20, rotating seat 21, rotating shaft 22, driving cylinder 23, connecting rod 24, adjusting seat 25, wire take-up drive motor 26, wire take-up clamping roller 27, bending and sizing roller 28, mounting seat 29, guide tube 30, guide seat 31, vertical support frame 32, guide tube 33, five-wheel straightening structure 34, feed traction motor 35, feed traction mechanism 36, discharge traction motor 37, discharge traction mechanism 38.

[0030] Example 1

[0031] This embodiment is basically as shown in the attached Figure 1 、 Figure 2 Shown: A composite wire solid-liquid continuous casting production line, including a continuous casting device, a crystallizer, a traction device and a wire taking-up device arranged in sequence.

[0032] The continuous casting apparatus includes a melting furnace 1 and a composite furnace 5, which are interconnected. The melting furnace 1 is used to melt molten copper. It contains a melting chamber 2, which is heated by an externally wound coil 3. A melting furnace outlet 4 is located at the bottom of the melting chamber 2, and a flow guide 19 connects the melting furnace outlet 4 to the composite furnace 5. A stopper rod 6, designed to seal the melting furnace outlet 4, is vertically slidably connected within the melting chamber 2. When the stopper rod 6 is inserted into the melting furnace outlet 4, it seals the outlet 4, preventing the flow of molten copper.

[0033] The bottom of the melting furnace 1 is equipped with an adjustment mechanism for adjusting the position and height of the melting furnace 1. The adjustment mechanism includes a height adjustment assembly and a position adjustment assembly. The height adjustment assembly includes a base 7, two height adjustment bolts 8, and a fastening nut. The bottoms of the height adjustment bolts 8 are rotatably connected to the base 7, and the tops of the height adjustment bolts 8 are threadedly connected to the bottom of the melting furnace 1. The fastening nuts are fixedly mounted below the height adjustment bolts 8. By rotating the height adjustment bolts 8, the height of the melting furnace 1 can be adjusted. The position adjustment assembly includes left and right position adjustment members and front and back position adjustment members, which are used to adjust the left and right and front and back positions of the melting furnace 1, respectively. Both the left-right and front-back position adjustment members include a slide rail 9, a gear, a rack 10, and an adjustment wheel 11. The slide rail 9 is fixed to the bottom surface, and the base 7 is laterally slidably connected to the slide rail 9. The rack 10 is fixed to the bottom of the base 7 via a height adjustment bolt 8. The gear is rotatably connected to the slide rail 9 and meshes with the rack 10. The gear is coaxially fixed to a drive shaft, one end of which passes through the slide rail 9 and is coaxially fixed to the adjustment wheel 11. By rotating the adjustment wheel 11, the gear rotates, which in turn drives the meshed rack 10 to move, causing the base 7 to slide along the slide rail 9, thereby achieving the position adjustment of the melting furnace 1.

[0034] The composite furnace 5 is used for the composite of copper liquid and copper wire, and the composite furnace 5 is also heated by the externally wound coil 3. The composite furnace 5 is fixed on the bottom plate of the crystallizer, and a composite cavity 12 is provided in the composite furnace 5. The guide tube 19 is connected between the liquid outlet 4 of the melting furnace and the composite cavity 12. A number of composite molds are fixed in the composite cavity 12. In this embodiment, the number of composite molds is four. In actual use, different numbers of composite molds can be set according to production needs. The composite molds all include a mold body 13. The mold body 13 is cylindrical as a whole. The mold body 13 is axially penetrated by a wire inlet hole 14 for the copper wire to pass through. The outer wall of the mold body 13 is provided with two rectangular liquid inlet holes 15 connected to the wire inlet hole 14. The two liquid inlet holes 15 are symmetrically arranged with the axis of the wire inlet hole 14 as the center. The height of the liquid inlet hole 15 is 5-50mm, and the width of the liquid inlet hole 15 is 1 / 3-2 / 3 of the outer diameter of the mold body 13. The diameter of the wire inlet hole 14 above the liquid inlet hole 15 is larger than the diameter of the wire inlet hole 14 below the liquid inlet hole 15 , and a threading positioning mold 16 that can block the liquid inlet hole 15 is vertically slidably connected in the wire inlet hole 14 above the liquid inlet hole 15 .

[0035] The crystallizer includes a cooling mold 17 and a cooling chamber 18 surrounding the cooling mold 17. The cooling mold 17 circumferentially surrounds the discharge port of the mold body 13, specifically near the lower portion of the mold body 13. In this embodiment, the cooling mold 17 is a copper sleeve. By passing cooling water into the cooling chamber 18, the lower portion of the mold body 13 is cooled by temperature conduction, thereby cooling the molten copper surrounding the copper wire.

[0036] The crystallizer discharge end is equipped with a traction device and a wire take-up device. Figure 5 As shown, the traction device includes a vertical support frame 32, on which a feed traction mechanism 36 and a discharge traction mechanism 38 are provided. The feed traction mechanism 36 is arranged at the feed end (above) of the composite furnace 5, and the discharge traction mechanism 38 is arranged at the discharge end (below the crystallizer) of the composite furnace 5.

[0037] Above the feed traction mechanism 36 are a straightening mechanism and a feed guide mechanism. The feed guide mechanism comprises four parallel guide tubes 33, while the straightening mechanism comprises a five-wheel straightening structure 34, corresponding in number to the guide tubes 33. Each of the five-wheel straightening structures 34 comprises a straightening base bolted to a vertical support frame 32. Three fixed straightening wheels rotate side by side on the straightening base, and two movable straightening wheels are located in front of the three fixed straightening wheels, positioned outside the gaps between the three fixed straightening wheels. The straightening base, in front of the fixed straightening wheels, has two parallel, transverse through-slots. Threaded holes are provided on the side ends of the straightening base, connecting to the through-slots. Adjustment bolts are attached to the threaded holes. The axles of the movable straightening wheels pass through the through-slots, and the tail ends of the adjustment bolts contact the axles of the movable straightening wheels.

[0038] The feed traction mechanism 36 includes five feed traction bases arranged in parallel on a vertical support frame 32. Two parallel, horizontal feed traction shafts are inserted between the five feed traction bases. The feed traction shafts between adjacent feed traction bases are keyed to feed traction main wheels. The four feed traction main wheels between the five feed traction bases correspond to the guide tube 33. The feed traction motor 35 is bolted to the side end of the vertical support frame 32. The end of the feed traction shaft is keyed to a feed driven gear. The feed traction motor 35 is keyed to a feed driving gear located between the two feed driven gears. Both feed driven gears mesh with the feed driving gear. The feed traction base on the front side of each feed traction main wheel is equipped with a feed pressing member that pushes the copper strands toward the feed traction main wheel. The feed pressing part includes a feed traction pair wheel and a feed pressing cylinder. A horizontal through groove and a through hole perpendicular to the through groove are provided on the feed traction base. The axle of the feed traction pair wheel is passed through the through groove. The telescopic end of the feed pressing cylinder is inserted into the through hole and contacts with the axle of the feed traction pair wheel.

[0039] The discharging traction mechanism 38 includes five discharging traction bases arranged in parallel on the vertical support frame 32, two side-by-side discharging traction shafts are passed through the five discharging traction bases, the discharging traction shafts between adjacent discharging traction bases are keyed to the discharging traction main wheels, the four discharging traction main wheels between the five discharging traction bases correspond to the guide tube 33, the side end of the vertical support frame 32 is bolted to the discharging traction motor 37, the end of the discharging traction shaft is keyed to the discharging driven gear, the discharging traction motor 37 is keyed to the discharging driving gear located between the two discharging driven gears, the two discharging driven gears are meshed with the discharging driving gear, and the discharging traction base on the front side of each discharging traction main wheel is provided with a discharging pressing member that pushes the copper stranded wire toward the discharging traction main wheel. The discharging and pressing part includes a discharging traction pair wheel and a discharging and pressing cylinder. A horizontal through groove and a through hole perpendicular to the through groove are provided on the discharging traction base. The axle of the discharging traction pair wheel is passed through the through groove. The telescopic end of the discharging and pressing cylinder is inserted into the through hole and contacts with the axle of the discharging traction pair wheel.

[0040] The wire take-up device includes a driving swing arm and a wire take-up drum. The wire take-up drum is rotatably arranged on one side of the driving swing arm and is driven to rotate by a motor. Figure 3 、 Figure 4 As shown, the driving swing arm includes a fixed seat 20 and a rotating seat 21 located on the left side of the fixed seat 20. The fixed seat 20 is rotatably connected to a vertically arranged rotating shaft 22 through a bearing. The rotating seat 21 is fixedly connected to the rotating shaft 22 by screws. The fixed seat 20 is connected to a driving mechanism for driving the rotating seat 21 to rotate. In this embodiment, the driving mechanism includes a driving cylinder 23 and a connecting rod 24 rotatably connected to the output shaft of the driving cylinder 23 through a pin shaft. The driving cylinder 23 is fixedly connected to the fixed seat 20 by screws. A sleeve is welded to the end of the connecting rod 24 away from the driving cylinder 23, and the sleeve is fixedly connected to the rotating shaft 22 by a flat key.

[0041] A bending mechanism for bending wire rods is connected to the rotating seat 21. An adjustment mechanism for adjusting the distance between the bending mechanism and the fixed seat 20 is provided between the bending mechanism and the rotating seat 21. In this embodiment, the adjustment mechanism includes an adjustment seat 25 having two transversely arranged strip holes. The rotating seat 21 has a fixing hole that matches the strip holes. At the same time, a transversely arranged support groove is provided on the side wall near the left end of the rotating seat 21. The adjustment seat 25 is laterally slidably connected to the support groove. After the adjustment seat 25 is laterally slid, a screw is inserted through the strip holes and then threadedly fixed to the fixing hole, thereby fixing the adjustment seat 25 to the rotating seat 21.

[0042] The bending mechanism includes a rotating motor 26, a rotating pair of rollers 27 and a bending sizing roller 28. The left side of the adjusting seat 25 is fixedly connected to the mounting seat 29 by screws. The rotating motor 26 is fixedly connected to the top surface of the mounting seat 29 by screws. The rotating pair of rollers 27 and the bending sizing roller 28 are both rotatably connected to the bottom surface of the mounting seat 29 through bearings, and the rotating pair of rollers 27 is fixedly connected to the output shaft of the rotating motor 26. The rotating pair of rollers 27 and the bending sizing roller 28 form a curved guide rail for bending wire.

[0043] The bottom of the rotating seat 21 is fixedly connected to a plurality of laterally arranged guide tubes 30 by screws. In this embodiment, the number of guide tubes 30 is two. At the same time, the bottoms of the fixed seat 20 and the rotating seat 21 are fixedly connected to a plurality of guide seats 31 by screws, and one of the guide seats 31 is located between the two guide tubes 30. In order to enable the wire to quickly and conveniently enter the guide tube 30 or the guide seat 31, in this embodiment, a first guide cone surface is opened at the right end of the guide tube 30, and a second guide cone surface is opened at the right end of the guide seat 31.

[0044] The specific implementation process is as follows: After the copper liquid is melted in the melting furnace 1, it flows along the melting furnace outlet 4 through the guide tube 19 into the composite cavity 12. The core materials (copper wires) of the four composite wires are respectively inserted into the wire-laying holes of the four composite molds under the traction of the feed traction mechanism. The copper liquid in the composite cavity 12 enters the interior of the mold body 13 through the liquid inlet hole 15 and covers the outside of the copper wires, forming a layer of brass. The crystallizer at the bottom of the mold body 13 is used to cool the brass layer and solidify it to form a composite wire. Under the pulling action of the pulling device at the lower end, the composite wire continuously moves downward along the mold body 13 and is pulled to the fixed seat 20 of the drive swing arm under the traction of the discharge traction mechanism.

[0045] When the wire needs to be wound, the composite wire passes through the guide seat 31 at the bottom of the fixed seat 20 in turn and enters the guide seat 31 and guide tube 30 at the bottom of the rotating seat 21. Then the composite wire is conveyed to the curved guide rail, and the rotating motor 26 drives the rotating roller 27 to rotate, driving the composite wire to be conveyed forward. Under the action of the curved track, the composite wire is automatically bent. At the same time, the output shaft of the driving cylinder 23 is extended, so that the connecting rod 24 drives the rotating shaft 22 to rotate. When the rotating shaft 22 rotates, it drives the rotating seat 21, the adjusting seat 25 and the bending mechanism to rotate synchronously, so that the composite wire bent by the bending mechanism is rotated to the take-up reel in the prior art so that the take-up reel can reel the composite wire.

[0046] When the composite wire is wound onto the take-up reel to a predetermined length, the composite wire on the transmission track is cut off, and then the rotation speed of the take-up reel is increased to quickly wind up the composite wire. Then, the output shaft of the driving cylinder 23 is retracted, so that the connecting rod 24 pulls the rotating shaft 22 to rotate, and the rotating shaft 22 drives the rotating seat 21, the adjusting seat 25 and the bending mechanism to rotate, so that the bending mechanism is away from the take-up reel, preventing the bending mechanism, the adjusting seat 25 and the rotating seat 21 from staying near the take-up reel, so that the composite wire wound on the take-up reel can be quickly removed from the take-up reel. When the end of the composite wire cut off on the transmission track is transferred to the fixed seat 20, the above operation is repeated, so that the composite wire continues to be wound onto the take-up reel, thereby realizing continuous winding of the composite wire.

[0047] When a fault occurs in the lower part of the mold body 13 or the crystallizer, or other faults require replacement of the copper wire, the threading and positioning mold can be driven to slide downward along the wire inlet hole 14, so that the sleeve blocks the liquid inlet hole 15, preventing the copper liquid from overflowing into the mold body 13, making it convenient to replace the copper wire.

[0048] This technical solution can realize the simultaneous processing of multiple composite wires, greatly improving the processing efficiency. In addition, by optimizing the structure of the composite mold, the uniformity of the copper liquid coating can be improved, and the efficiency of the copper liquid coating can also be improved.

[0049] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A composite wire solid-liquid continuous casting production line, characterized by: The invention comprises a continuous casting device, which comprises a melting furnace and a composite furnace connected to each other, and the outsides of the melting furnace and the composite furnace are both provided with heating and heat preservation components; a composite cavity is provided in the composite furnace, and a plurality of composite molds are provided in the composite cavity, and a crystallizer is provided below the composite molds; the composite mold comprises a mold body, an upper part of the mold body is axially penetrated with a wire feed hole for copper wire to pass through, and a wire solidification forming sizing hole is provided at the lower part, and an outer wall of the mold body is provided with a liquid inlet hole connected to the wire feed hole, the diameter of the wire feed hole located above the liquid inlet hole is larger than the diameter of the solidification forming sizing hole located below the liquid inlet hole, and a threading positioning mold is provided in the wire feed hole, and the threading positioning mold can slide up and down along the axis of the wire feed hole; an adjustment mechanism for adjusting the position and height of the melting furnace is provided at the bottom of the melting furnace, the adjustment mechanism comprises a height adjustment component and a position adjustment component, the position adjustment component comprises a left and right position adjustment member and a front and rear position adjustment member, and the left and right position adjustment member and the front and rear position adjustment member are respectively used to realize the adjustment of the left and right and front and rear positions of the melting furnace.

2. The composite wire solid-liquid continuous casting production line according to claim 1, characterized in that: A glass tube for centering the core material is arranged inside the top end of the threading and positioning mold, and the glass tube is coaxially arranged with the composite mold.

3. The composite wire solid-liquid continuous casting production line according to claim 2, characterized in that: There are two liquid inlet holes, which are symmetrically arranged with the axis of the wire inlet hole as the center. The height of the liquid inlet hole is 5-50mm, and the width of the liquid inlet hole is 1 / 3-2 / 3 of the outer diameter of the mold body.

4. The composite wire solid-liquid continuous casting production line according to claim 3, characterized in that: The melting furnace is provided with a melting cavity inside, a melting furnace outlet is provided at the bottom of the melting cavity, a guide pipe is connected between the melting furnace outlet and the composite cavity, and a stopper rod for sealing the melting furnace outlet is movably connected inside the melting furnace.

5. The composite wire solid-liquid continuous casting production line according to claim 4, characterized in that: The height adjustment assembly includes a base, at least two height adjustment bolts and fastening nuts. The bottoms of the height adjustment bolts are rotatably connected to the base, the tops of the height adjustment bolts are threadedly connected to the bottom of the melting furnace, and the fastening nuts are fixedly sleeved on the lower parts of the height adjustment bolts; the left and right position adjustment parts and the front and rear position adjustment parts all include slide rails, gears, racks and adjusting wheels. The base is laterally slidably connected to the slide rails, the racks are fixed to the bottom of the base, the gears are rotatably connected to the slide rails and the gears are meshed with the racks. The gears are coaxially fixed with a drive shaft, and one end of the drive shaft passes through the slide rails and is coaxially fixed to the adjusting wheel.

6. The composite wire solid-liquid continuous casting production line according to claim 5, characterized in that: The crystallizer includes a cooling mold and a cooling chamber wrapped around the outside of the cooling mold. The cooling mold circumferentially wraps around the outside of the discharge port of the mold body.

7. The composite wire solid-liquid continuous casting production line according to claim 6, characterized in that: The discharge end of the crystallizer is provided with a traction device and a wire-taking device in sequence, and the wire-taking device includes a driving swing arm and a wire-taking drum.

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