Aluminum-clad Invar core alloy stranded wire and its production process

Abstract

The present invention provides an aluminum-clad Invar core alloy stranded wire and a production process thereof, comprising an alloy inner core, an alloy outer shell sleeved on the outer side of the alloy inner core, and a plurality of clamps clamped on the outer side of the alloy outer shell, wherein the alloy inner core comprises a plurality of twisted Invar wires, the alloy outer shell comprises a plurality of twisted aluminum alloy wires, and a rubber pad is bonded to the inner wall of the clamp, and the rubber pad is tightly pressed against the alloy outer shell. The rubber pad arranged on the inner wall of the clamp can be pressed against the alloy outer shell, thereby increasing the friction between the clamp and the alloy outer shell, making it difficult for the clamp and the alloy outer shell to rotate relative to each other, so that the service life of the alloy stranded wire is not easily affected.

Description

Technical Field

[0001] The invention relates to a cable, in particular to an aluminum-clad Invar core alloy stranded wire and a production process thereof. Background Art

[0002] At present, the existing aluminum-clad invar core alloy stranded wire, such as Figure 6 As shown, it includes an alloy core 1, an alloy outer sleeve 2 and a clamp 3. The alloy core 1 is formed by twisting a plurality of Invar wires. The alloy outer sleeve 2 is sleeved on the outside of the alloy core 1, and the alloy outer sleeve 2 is twisted by a plurality of aluminum alloy wires. There are a plurality of clamps 3, and they are evenly distributed along the length direction of the alloy outer sleeve 2. The clamp 3 is sleeved on the outside of the alloy outer sleeve 2 to clamp the alloy outer sleeve 2 and the alloy core 1. However, in the process of transporting the above-mentioned aluminum-clad Invar core alloy stranded wire, the clamp and the alloy outer sleeve are prone to rotation, which makes the clamp easy to be damaged and has a great impact on the service life of the above-mentioned aluminum-clad Invar core alloy stranded wire. Summary of the invention

[0003] In view of this, the first object of the present invention is to provide an aluminum-clad invar core alloy stranded wire, which has the advantages that relative rotation between the clamp and the alloy outer sleeve is not easy to occur and the service life is not easily affected.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: an aluminum-clad Invar core alloy stranded wire, comprising an alloy inner core, an alloy outer sleeve sleeved on the outside of the alloy inner core, and a plurality of clamps clamped on the outside of the alloy outer sleeve, the alloy inner core comprises a plurality of twisted Invar wires, the alloy outer sleeve comprises a plurality of twisted aluminum alloy wires, a rubber pad is adhered to the inner wall of the clamp, and the rubber pad is tightly pressed against the alloy outer sleeve.

[0005] Through the above technical solution, the rubber pad arranged on the inner wall of the clamp can be tightly pressed against the alloy sleeve, thereby increasing the friction between the clamp and the alloy sleeve, making it difficult for the clamp and the alloy sleeve to rotate relative to each other, so that the service life of the alloy stranded wire is not easily affected.

[0006] Preferably, a plurality of positioning protrusions are provided on the inner wall of the rubber pad, and the plurality of positioning protrusions are integrally formed with the rubber pad.

[0007] Through the above technical solution, several positioning protrusions arranged on the inner wall of the rubber pad can further increase the friction between the clamp and the alloy sleeve, making it difficult for the clamp and the alloy sleeve to rotate relative to each other, so that the service life of the alloy stranded wire is not easily affected.

[0008] Preferably, the clamp is penetrated by a plurality of mounting holes, and the plurality of mounting holes are evenly distributed along the circumference of the clamp, and also includes a limiting block, one end of the limiting block passes through the mounting hole and is inserted between two adjacent aluminum alloy wires, and the other end of the limiting block is welded and fixed to the outside of the clamp.

[0009] Through the above technical solution, the limit block is inserted between the two aluminum alloy wires to limit the relative rotation between the clamp and the alloy jacket, so that the service life of the alloy stranded wire is not easily affected. The limit block is welded and fixed to the clamp, which can improve the structural strength of the clamp, making the clamp less likely to be damaged, so that the service life of the alloy stranded wire is not easily affected.

[0010] Preferably, a connecting plate is provided at the end of the limiting block protruding from the clamp, the connecting plate is tightly attached to the clamp, and the edge of the connecting plate is fixed to the clamp by welding.

[0011] Through the above technical solution, the connecting plate is tightly attached to the clamp, which can improve the structural strength of the clamp on the one hand, and improve the convenience of connecting the limit block and the clamp on the other hand.

[0012] The second object of the present invention is to provide a production process for aluminum-clad Invar core alloy stranded wire, which has the advantage of high processing efficiency.

[0013] The technical solution of the present invention is: a production process of aluminum-clad Invar core alloy stranded wire, comprising the following steps:

[0014] Step 1: twist a number of Invar wires into an alloy core;

[0015] Step 2: Place the aluminum ingot into a round aluminum melting furnace and smelt it at 780-790 degrees Celsius until all the raw materials are melted;

[0016] Step 3: Add magnesium, silicon, refining agent, zirconium, boron and rare earth into the circular aluminum melting furnace for refining, and continue stirring during the refining process;

[0017] Step 4: Pass 40% Ar and 60% CO mixed gas into the round aluminum melting furnace for degassing and purification, and remove the slag after degassing and purification for 30 minutes;

[0018] Step 5: using a semi-continuous direct water-cooling casting method to cast the aluminum liquid in the round aluminum melting furnace to obtain a billet;

[0019] Step 6: Place the blank in a holding furnace and keep it warm for 6 hours. The temperature in the holding furnace is 430-440 degrees Celsius.

[0020] Step 7: Put the blank into the extruder for extrusion to obtain a rod with a diameter of 9.5 mm;

[0021] Step 8: Put the rod into the wire drawing machine to draw and reduce the diameter until an aluminum alloy wire with a diameter of 2-3 mm is obtained;

[0022] Step 8: Use a wire stranding machine to strand the aluminum alloy wire to the outside of the alloy core to form an alloy jacket;

[0023] Step 9: Install several clamps to the outside of the alloy jacket and tighten the alloy jacket with the clamps.

[0024] Through the above technical solution, the above steps are used to produce aluminum-clad Invar core alloy stranded wire, which has the advantages of less time consumption and higher production efficiency.

[0025] Preferably, the stranding machine comprises a wire-paying frame, a wire-passing hole is provided at the center of the wire-paying frame, a wire-spool placement groove is provided on the surface of the wire-paying frame, a wire-spool wound with an aluminum alloy wire is placed in the wire-spool placement groove, a wire-supply hole is provided on the inner groove wall of the wire-spool placement groove, and the wire-supply hole is communicated with the wire-passing hole;

[0026] The wire-releasing frame is provided with a wire spool positioning mechanism, which is opposite to the wire supply hole on the left and right, and is used to position the wire spool in the wire spool placement groove. The wire spool positioning mechanism includes a positioning disk, a movable disk and a power piece, the positioning disk is rotatably connected to the inner groove wall of the wire spool placement groove, the movable disk is rotatably connected to the inner groove wall of the wire spool placement groove, and the movable disk is coaxial with the positioning disk, and the power piece is used to drive the movable disk to approach or move away from the positioning disk.

[0027] Through the above technical solution, when in use, the first step is to control the alloy inner core to pass through the wire hole, the second step is to place the wire bobbin wound with the aluminum alloy wire between the positioning disk and the movable disk, the third step is to drive the movable disk close to the positioning disk through the power part to clamp the wire bobbin, the fourth step is to control the aluminum alloy wire to pass through the wire supply hole, and the fifth step is to use a motor or other driving part to control the rotation of the wire pay-off frame so that the aluminum alloy wire can be twisted to the outside of the alloy inner core to form an alloy outer jacket.

[0028] Preferably, a wire break trigger mechanism and a wire break response mechanism are provided in the wire reel placement groove, the wire break trigger mechanism is connected to the wire reel positioning mechanism to detect whether the aluminum alloy wire is broken, the wire break response mechanism is arranged at the wire supply hole and connected to the wire break trigger mechanism, when the wire break trigger mechanism detects that the aluminum alloy wire is broken, the wire break response mechanism clamps the aluminum alloy wire.

[0029] Through the above technical scheme, when the aluminum alloy wire is twisted on the outside of the alloy inner core, if the aluminum alloy wire is broken, the wire break trigger mechanism is triggered, and the wire break trigger mechanism controls the wire break response mechanism to open, and the aluminum alloy wire is clamped, so that the broken part of the aluminum alloy can still be twisted to the outside of the alloy inner core, and there is no need to stop the stranding machine immediately, which helps to improve the production efficiency of aluminum-clad Invar core alloy stranded wire.

[0030] Preferably, the wire breaking trigger mechanism comprises a positioning shaft fixedly connected to the inner groove wall of the wire spool placement groove, a trigger disk rotatably sleeved on the outer side of the positioning shaft, and a spring connecting the positioning shaft and the trigger disk. A positioning ring groove is provided on the outer peripheral wall of the trigger disk. The positioning disk is annular and rotatably connected in the positioning ring groove. A plurality of protrusions are evenly arranged along the circumferential direction on the inner ring of the positioning disk, and the protrusions are tightly pressed against the bottom of the positioning ring groove.

[0031] A plurality of receiving grooves are circumferentially provided at the bottom of the positioning ring groove, and a one-way locking member is provided in each of the receiving grooves. The one-way locking member includes a supporting spring fixedly connected to the bottom of the receiving groove and a locking slider fixedly connected to the top of the supporting spring. When the supporting spring is in a force balanced state, the end of the locking slider protrudes from the receiving groove, and a guiding inclined surface is provided at the end of the locking slider. During the wire twisting process, the protrusion can contact the guiding inclined surface and press the locking slider into the receiving groove.

[0032] Through the above technical solution, when the aluminum alloy wire is twisted to the outside of the alloy inner core, the wire drum can drive the positioning disk to rotate circumferentially. Since the protrusion is tightly against the bottom of the positioning ring groove, the positioning disk can drive the trigger disk to rotate circumferentially through the protrusion, so that the mainspring is continuously tightened. The force applied by the mainspring to the trigger disk is F1, and the friction force between the protrusion and the trigger disk is F2. When F1=F2, the positioning disk cannot drive the trigger disk to rotate. Afterwards, the protrusion can conflict with the guide slope and press the locking block into the storage groove. When the aluminum alloy wire is disconnected, the trigger disk can rotate in the opposite direction under the action of the mainspring. When the side wall of the locking slider conflicts with the side wall of the protrusion, the trigger disk can drive the positioning disk to rotate in the opposite direction through the locking slider. When the trigger disk rotates in the opposite direction, the wire break response mechanism can be controlled to open, and the disconnected aluminum alloy wire can be clamped to ensure that the stranding process can continue in a short time.

[0033] Preferably, the line break response mechanism includes an actuator and a control switch electrically connected to the actuator, the actuator includes a fixed clamp block, a movable clamp block and a clamping cylinder, the fixed clamp block and the movable clamp block are respectively arranged on both sides of the wire supply hole, the output end of the clamping cylinder is connected to the movable clamp block to drive the movable clamp block to move closer to or away from the fixed clamp block, and the toggle end of the control switch is connected to a cable, and the cable is wound around the outer wall of the trigger disk.

[0034] Through the above technical solution, when the trigger disk rotates in the opposite direction, the cable is gradually wound around the outer wall of the trigger disk. When the cable is in a taut state, the trigger disk can toggle the control switch through the cable to open the execution cylinder. When the execution cylinder is opened, the movable clamp block can be driven close to the fixed clamp block to clamp the aluminum alloy wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of embodiment 1;

[0036] Figure 2 The structural diagram of the stranding machine is as follows:

[0037] Figure 3 for Figure 2 A magnified view of part A;

[0038] Figure 4 for Figure 2 A magnified view of part B;

[0039] Figure 5 It is a partial schematic diagram of a stranding machine;

[0040] Figure 6 It is a structural schematic diagram of the existing aluminum-clad Invar core alloy stranded wire.

[0041] 1. Alloy inner core; 2. Alloy outer sleeve; 3. Clamp; 4. Rubber pad; 5. Positioning protrusion; 6. Mounting hole; 7. Limit block; 8. Connecting plate; 9. Wire-releasing frame; 10. Wire-passing hole; 11. Wire drum placement groove; 12. Wire supply hole; 13. Wire drum positioning mechanism; 131. Positioning disk; 132. Movable disk; 133. Power part; 14. Wire break trigger mechanism; 141. Positioning shaft; 142. Trigger disk; 143. Spring; 15. Wire break response mechanism; 151. Actuator; 1511. Fixed clamp block; 1512. Movable clamp block; 1513. Clamping cylinder; 152. Control switch; 16. Positioning ring groove; 17. Protrusion; 18. Storage groove; 19. One-way locking member; 191. Support spring; 192. Locking slider; 20. Guide slope; 21. Cable. DETAILED DESCRIPTION

[0042] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0043] Embodiment 1:

[0044] An aluminum-clad invar core alloy stranded wire, such as Figure 1 As shown, it includes an alloy inner core 1, an alloy outer shell 2 sleeved on the outer side of the alloy inner core 1, and a plurality of clamps 3 clamped on the outer side of the alloy outer shell 2.

[0045] The alloy inner core 1 comprises a plurality of Invar wires, and the plurality of Invar wires are twisted and fixed together by a rope closing machine.

[0046] The alloy outer shell 2 includes a plurality of aluminum alloy wires, and the plurality of aluminum alloy wires are twisted and fixed on the outer side of the alloy inner core 1 by a twisting machine.

[0047] A rubber pad 4 is bonded to the inner wall of the clamp 3, and the rubber pad 4 is tightly pressed against the alloy sleeve 2 to increase the friction between the clamp 3 and the alloy sleeve 2. A plurality of positioning protrusions 5 are provided on the inner wall of the rubber pad 4, and the plurality of positioning protrusions 5 are integrally formed with the rubber pad 4 to further increase the friction between the clamp 3 and the alloy sleeve 2.

[0048] The clamp 3 is provided with a plurality of mounting holes 6, and the plurality of mounting holes 6 are evenly distributed along the circumference of the clamp 3. It also includes a plurality of limit blocks 7, one end of which passes through the mounting hole 6 and is inserted between two adjacent aluminum alloy wires, and the other end of the limit block 7 is provided with a connecting plate 8, the inner side of the connecting plate 8 is tightly attached to the outer side of the clamp 3, and the edge of the connecting plate 8 is welded and fixed to the clamp 3.

[0049] Embodiment 2:

[0050] A production process of aluminum-clad Invar core alloy stranded wire as described in Example 1 comprises the following steps:

[0051] Step 1: Use a rope closing machine to twist several Invar wires into an alloy core;

[0052] Step 2: Place the aluminum ingot into a round aluminum melting furnace and smelt it at 780-790 degrees Celsius until all the raw materials are melted;

[0053] Step 3: Add magnesium, silicon, refining agent, zirconium, boron and rare earth into the circular aluminum melting furnace for refining, and continue stirring during the refining process;

[0054] Step 4: Pass 40% Ar and 60% CO mixed gas into the round aluminum melting furnace for degassing and purification, and remove the slag after degassing and purification for 30 minutes;

[0055] Step 5: using a semi-continuous direct water-cooling casting method to cast the aluminum liquid in the round aluminum melting furnace to obtain a billet;

[0056] Step 6: Place the blank in a holding furnace and keep it warm for 6 hours. The temperature in the holding furnace is 430-440 degrees Celsius.

[0057] Step 7: Put the blank into the extruder for extrusion to obtain a rod with a diameter of 9.5 mm;

[0058] Step 8: Put the rod into the wire drawing machine to draw and reduce the diameter until an aluminum alloy wire with a diameter of 2-3 mm is obtained;

[0059] Step 8: Use a wire stranding machine to strand the aluminum alloy wire to the outside of the alloy core to form an alloy jacket;

[0060] Step 9: Install several clamps to the outside of the alloy jacket and tighten the alloy jacket with the clamps.

[0061] like Figures 2 to 5 As shown, the wire twisting machine in step eight includes a wire-paying frame 9 rotatably connected to a bracket. When in use, the wire-paying frame 9 can be controlled by a driving member such as a motor to rotate circumferentially around an axis.

[0062] A wire passing hole 10 is provided through the center of the wire-releasing frame 9. When in use, the alloy inner core is controlled to pass through the center of the wire passing hole 10 and to move slowly in the axial direction.

[0063] The surface of the wire-paying frame 9 is provided with a plurality of wire-spool placement grooves 11, and each wire-spool placement groove 11 is arranged along the radial direction of the wire-paying frame 9. The plurality of wire-spool placement grooves 11 are evenly divided into a plurality of wire-spool placement groups, and the plurality of wire-spool placement groups are evenly spaced along the circumference of the wire-paying frame 9. The plurality of wire-spool placement grooves 11 in each wire-spool placement group are evenly spaced along the axial direction of the wire-paying frame 9. When in use, a wire bobbin wound with an aluminum alloy wire is placed in each wire-spool placement groove 11. A wire supply hole 12 is provided at the inner groove wall of the wire-spool placement groove 11 near the wire-passing hole 10, and the wire supply hole 12 is connected with the wire-passing hole 10. When in use, the aluminum alloy wire passes through the wire supply hole 12 and extends into the wire-passing hole 10.

[0064] The wire-releasing frame 9 is provided with a bobbin positioning mechanism 13, the number of which is the same as the number of the bobbin wire-releasing grooves, and the bobbin positioning mechanism 13 is provided in one-to-one correspondence with the bobbin placement groove 11, and the bobbin positioning mechanism 13 is used to position the bobbin in the bobbin placement groove 11, so that the bobbin can only rotate circumferentially in the bobbin placement groove 11. The bobbin positioning mechanism 13 includes a positioning disk 131, a movable disk 132, and a power member 133. The positioning disk 131 is rotatably connected to the inner groove wall of the bobbin placement groove 11, the movable disk 132 is rotatably connected to the inner groove wall of the bobbin placement groove 11, and the movable disk 132 is coaxial with the positioning disk 131, and the power member 133 is used to drive the movable disk 132 to approach or move away from the positioning disk 131.

[0065] A wire break trigger mechanism 14 and a wire break response mechanism 15 are provided in the wire drum placement slot 11. The wire break trigger mechanism 14 is connected to the wire drum positioning mechanism 13 to detect whether the aluminum alloy wire is broken. The wire break response mechanism 15 is provided at the wire supply hole 12 and is connected to the wire break trigger mechanism 14. When the wire break trigger mechanism 14 detects that the aluminum alloy wire is broken, the wire break response mechanism 15 clamps the aluminum alloy wire.

[0066] The wire breaking trigger mechanism 14 comprises a positioning shaft 141 fixedly connected to the inner groove wall of the wire spool placement groove 11, a trigger disk 142 rotatably sleeved on the outer side of the positioning shaft 141, and a spring 143 connecting the positioning shaft 141 and the trigger disk 142. A positioning ring groove 16 is provided on the outer peripheral wall of the trigger disk 142, the positioning disk 131 is annular, the positioning disk 131 is rotatably connected in the positioning ring groove 16, and a plurality of protrusions 17 are evenly arranged along the circumferential direction on the inner ring of the positioning disk 131, and the protrusions 17 are tightly pressed against the bottom of the positioning ring groove 16.

[0067] A plurality of receiving grooves 18 are provided along the circumferential direction at the bottom of the positioning ring groove 16, and a one-way locking member 19 is provided in each receiving groove 18. The one-way locking member 19 includes a support spring 191 fixedly connected to the bottom of the receiving groove 18, and a locking slider 192 fixedly connected to the top of the support spring 191. When the support spring 191 is in a force-balanced state, the end of the locking slider 192 protrudes from the receiving groove 18. A guiding inclined surface 20 is provided at the end of the locking slider 192. During the twisting process, the protrusion 17 can collide with the guiding inclined surface 20 and press the locking slider 192 into the receiving groove 18.

[0068] The disconnection response mechanism 15 includes an actuator 151 and a control switch 152 electrically connected to the actuator 151. The actuator 151 includes a fixed clamp block 1511, a movable clamp block 1512 and a clamping cylinder 1513. The fixed clamp block 1511 and the movable clamp block 1512 are respectively arranged on both sides of the wire supply hole 12, and the output end of the clamping cylinder 1513 is connected to the movable clamp block 1512 to drive the movable clamp block 1512 to approach or move away from the fixed clamp block 1511. The toggle end of the control switch 152 is connected to a cable 21, and the cable 21 is wound around the outer wall of the trigger disk 142.

[0069] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An aluminum-clad Invar core alloy stranded wire, comprising an alloy inner core (1), an alloy outer shell (2) sleeved on the outside of the alloy inner core (1), and a plurality of clamps (3) hooped on the outside of the alloy outer shell (2), wherein the alloy inner core (1) comprises a plurality of twisted Invar wires, and the alloy outer shell (2) comprises a plurality of twisted aluminum alloy wires, and wherein: A rubber pad (4) is bonded to the inner wall of the clamp (3), and the rubber pad (4) is tightly pressed against the alloy sleeve (2); a plurality of positioning protrusions (5) are arranged on the inner wall of the rubber pad (4), and the plurality of positioning protrusions (5) are integrally formed with the rubber pad (4); a plurality of mounting holes (6) are arranged through the clamp (3), and the plurality of mounting holes (6) are evenly distributed along the circumference of the clamp (3), and also includes a limiting block (7), one end of the limiting block (7) passes through the mounting hole (6) and is inserted between two adjacent aluminum alloy wires, and the other end of the limiting block (7) is welded and fixed to the outer side of the clamp (3); a connecting plate (8) is arranged at the end of the limiting block (7) protruding from the clamp (3), and the connecting plate (8) is tightly pressed against the clamp (3), and the edge of the connecting plate (8) is welded and fixed to the clamp (3).

2. A production process for the aluminum-clad Invar core alloy stranded wire as claimed in claim 1, characterized in that: The steps include: Step 1: twist a number of Invar wires into an alloy core; Step 2: Place the aluminum ingot into a round aluminum melting furnace and smelt it at 780-790 degrees Celsius until all the raw materials are melted; Step 3: Add magnesium, silicon, refining agent, zirconium, boron and rare earth into the circular aluminum melting furnace for refining, and continue stirring during the refining process; Step 4: Pass 40% Ar and 60% CO mixed gas into the round aluminum melting furnace for degassing and purification, and remove the slag after degassing and purification for 30 minutes; Step 5: using a semi-continuous direct water-cooling casting method to cast the aluminum liquid in the round aluminum melting furnace to obtain a billet; Step 6: Place the blank in a holding furnace and keep it warm for 6 hours. The temperature in the holding furnace is 430-440 degrees Celsius. Step 7: Put the blank into the extruder for extrusion to obtain a rod with a diameter of 9.5 mm; Step 8: Put the rod into the wire drawing machine to draw and reduce the diameter until an aluminum alloy wire with a diameter of 2-3 mm is obtained; Step 8: Use a wire stranding machine to strand the aluminum alloy wire to the outside of the alloy core to form an alloy jacket; Step 9: Install several clamps to the outside of the alloy jacket and tighten the alloy jacket with the clamps.

3. The production process of an aluminum-clad Invar steel core alloy stranded wire according to claim 2, characterized in that: The wire stranding machine comprises a wire-paying frame (9), a wire-passing hole (10) is provided at the center of the wire-paying frame (9), a wire-spool placement groove (11) is provided on the surface of the wire-paying frame (9), a wire-spool wound with an aluminum alloy wire is placed in the wire-spool placement groove (11), a wire-supply hole (12) is provided on the inner groove wall of the wire-spool placement groove (11), and the wire-supply hole (12) is communicated with the wire-passing hole (10); The wire-releasing frame (9) is provided with a wire spool positioning mechanism (13), the wire spool positioning mechanism (13) is opposite to the wire supply hole (12) on the left and right, and the wire spool positioning mechanism (13) is used to position the wire spool in the wire spool placement groove (11), the wire spool positioning mechanism (13) comprises a positioning disk (131), a movable disk (132) and a power member (133), the positioning disk (131) is rotatably connected to the inner groove wall of the wire spool placement groove (11), the movable disk (132) is rotatably connected to the inner groove wall of the wire spool placement groove (11), and the movable disk (132) is coaxial with the positioning disk (131), and the power member (133) is used to drive the movable disk (132) to approach or move away from the positioning disk (131).

4. The production process of an aluminum-clad Invar core alloy stranded wire according to claim 3, characterized in that: The wire spool placement groove (11) is provided with a wire break trigger mechanism (14) and a wire break response mechanism (15); the wire break trigger mechanism (14) is connected to the wire spool positioning mechanism (13) and is used to detect whether the aluminum alloy wire is broken; the wire break response mechanism (15) is arranged at the wire supply hole (12) and is connected to the wire break trigger mechanism (14); when the wire break trigger mechanism (14) detects that the aluminum alloy wire is broken, the wire break response mechanism (15) clamps the aluminum alloy wire.

5. The production process of aluminum-clad Invar core alloy stranded wire according to claim 4, characterized in that: The wire break trigger mechanism (14) comprises a positioning shaft (141) fixedly connected to the inner groove wall of the wire spool placement groove (11), a trigger disk (142) rotatably sleeved on the outer side of the positioning shaft (141), and a spring (143) connecting the positioning shaft (141) and the trigger disk (142); a positioning ring groove (16) is provided on the outer peripheral wall of the trigger disk (142); the positioning disk (131) is annular; the positioning disk (131) is rotatably connected to the positioning ring groove (16); a plurality of protrusions (17) are evenly arranged on the inner ring of the positioning disk (131) along the circumferential direction; the protrusions (17) are tightly abutted against the bottom of the positioning ring groove (16); A plurality of receiving grooves (18) are circumferentially provided at the bottom of the positioning ring groove (16), and a one-way locking member (19) is provided in each of the receiving grooves (18). The one-way locking member (19) comprises a support spring (191) fixedly connected to the bottom of the receiving groove (18), and a locking slider (192) fixedly connected to the top of the support spring (191). When the support spring (191) is in a force balance state, the end of the locking slider (192) protrudes from the receiving groove (18), and the end of the locking slider (192) is provided with a guiding inclined surface (20). During the twisting process, the protrusion (17) can contact the guiding inclined surface (20) and press the locking slider (192) into the receiving groove (18).

6. The production process of the aluminum-clad Invar core alloy stranded wire according to claim 5, characterized in that: The disconnection response mechanism (15) comprises an actuator (151) and a control switch (152) electrically connected to the actuator (151); the actuator (151) comprises a fixed clamp block (1511), a movable clamp block (1512) and a clamping cylinder (1513); the fixed clamp block (1511) and the movable clamp block (1512) are respectively arranged on both sides of the wire supply hole (12); the output end of the clamping cylinder (1513) is connected to the movable clamp block (1512) to drive the movable clamp block (1512) to approach or move away from the fixed clamp block (1511); the toggle end of the control switch (152) is connected to a pull cable (21); and the pull cable (21) is wound around the outer wall of the trigger disk (142).

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