A stranding apparatus for wire and cable manufacturing and a method of using the same

Abstract

The application discloses a stranding device for wire and cable production and manufacturing and a use method thereof, and relates to the technical field of cable production, comprising a movable abutting plate arranged along the conveying direction; the movable abutting plate is provided with a spherical surface for limiting the kink position of outer stranding wires. The stranding device for wire and cable production and manufacturing extrudes the outer stranding wires in the conveying direction of the stranding wires through the movable abutting plate, so that the helix rise angle of the outer stranding wires is reduced. During the winding process of the multiple outer stranding wires, each outer stranding wire will be subjected to the forward thrust of the spherical surface when winding a circle, so that the outer stranding wire will transmit the thrust forward when winding, and the screw coil in front will slightly move forward under the thrust, so as to compensate for the distance of the outer stranding wire sliding backward relative to the inner stranding wire due to the small friction, thereby reducing the strand separation problem caused by the relative sliding. In addition, the inner and outer stranding wires are blown by the air supply unit, so as to reduce the dust adhered on the sheath, thereby avoiding the reduction of the friction between the inner and outer stranding wires.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, and more specifically to a stranding device for manufacturing wires and cables and its method of use. Background Technology

[0002] Cable stranders are used to spirally twist multiple metal wires together into a tight cable core according to a preset pitch and direction. Their core structure includes a rotating cage (driving the twisting of individual wires), a conductor guide (guiding the wire path), a tension control system (adjusting the tension of individual wires), and a compression mold (for compaction). Through the synchronous coordination of mechanical rotation and traction, layered stranding of the wires (such as left-hand Z-stretching or right-hand S-stretching) is achieved. Currently, cross-linked polyethylene is commonly used as the insulation material for cables, giving them good insulation and heat insulation properties.

[0003] Based on publication number CN117334409A, published on 2024-01-02, a method for manufacturing a cable and a cable are disclosed. The cable includes stranded wire and an outer sheath wrapped around the stranded wire. The stranded wire includes multiple conductors that are continuously wound along the length direction. The multiple conductors are divided into a first part and a second part. The outer wall of the conductor in the first part of the cable has lubricating powder between it and the inner wall of the outer sheath. The outer wall of the conductor in the second part of the cable does not have lubricating powder between it and the inner wall of the outer sheath. Lubricating powder is provided on the outer surface of all conductors in the first part of the cable, which is made of the same material as the outer sheath, while the outer surface of all conductors in the second part of the cable, which is made of a different material than the outer sheath, is not provided with lubricating powder. This allows the outer sheath to be easily peeled off while ensuring sufficient maximum static friction between the conductors in the second part of the cable and the inner wall of the outer sheath.

[0004] However, in the prior art including the aforementioned patent, since many cables now use cross-linked polyethylene as the sheath, the surface of cross-linked polyethylene is usually smooth and hydrophobic, which helps to reduce friction. Even if some of the lubricating powder is removed by suction, some lubricating powder will still remain between the sheaths, resulting in a smaller static friction between the outer strand and the inner strand.

[0005] The resistance torque applied by the tension wheel to the outer stranded wire makes the resistance experienced by the outer stranded wire greater than that of the inner stranded wire during the conveying process. When the friction between the outer and inner stranded wires is small, relative slippage between the inner and outer stranded wires is likely to occur. This leads to the gradual accumulation of backward slippage of the outer stranded wire and the problem of strand breakage. Summary of the Invention

[0006] The purpose of this invention is to provide a stranding device and its method for manufacturing wires and cables, in order to solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a stranding device for manufacturing wires and cables, including stranded wires, wherein the stranded wires include inner stranded wires and outer stranded wires, and further including a winding reel rotatably mounted on a frame and a wire exit roller arranged in a circumferential array on the reel for winding the outer stranded wires, including a stranding reel rotatably mounted on a frame, wherein a fixed bundle cylinder and a movable stop plate are arranged sequentially along the conveying direction.

[0008] The movable stop plate has a hollow structure coaxial with the inner strand and has a spherical surface for limiting the kinking position of the outer strand;

[0009] Air supply unit installed inside the winch;

[0010] An arc plate is set inside the twisting disc, which, together with the inner wall of the twisting disc, forms an airflow channel with two outlets. The flow rates of the two outlets are adjustable and are directed toward the inner and outer twisted wires respectively.

[0011] Transmission components used to drive the arc plate.

[0012] Preferably, a detection unit is also included on the front side of the stranding disc, the detection unit including an elastic element for detecting wire diameter.

[0013] Preferably, it also includes a locking cylinder located inside the stranding disc and movable along the length of the inner strand, which has a snap-fit ​​station that limits the swing amplitude of the strand.

[0014] The arc plate is hinged to the locking cylinder.

[0015] Preferably, the locking sleeve is slidably sleeved on the end of the transmission component and maintains a predetermined distance from the end of the transmission component.

[0016] Preferably, the fixed cable is circumferentially arrayed and slidably provided with multiple locking members for locking the movable stop plate, and the locking members unlock when the locking cable reaches the snap-fit ​​position.

[0017] Preferably, a flexible clamping block is fixedly provided on the locking member.

[0018] Preferably, the fixed bundle tube and the movable stop plate enclose each other to form an adjustable-width annular air outlet channel.

[0019] Preferably, the movable stop plate is slidably disposed on the fixed bundle tube, and the movable stop plate is provided with openings that decrease in size along the outgoing direction.

[0020] Preferably, the stranding disc is provided with a plurality of through holes in a circumferential array corresponding to the lead-out roller, and a rotating ring for clamping the outer strand is movably disposed in the through holes.

[0021] A method of using stranding equipment for manufacturing wires and cables, applied to the stranding equipment for manufacturing wires and cables described in the above-described scheme:

[0022] Step 1: Pass the inner stranded wire through the hole in the center of the winding reel, and pass it in sequence through the transmission component, locking cylinder, fixed bundle cylinder, movable stop plate and detection unit, so that the end of the inner stranded wire is fixed to the traction part of the rotating seat.

[0023] Step 2: Pull the outer stranded wire by the output roller, pass through the through hole and the round hole opened on the twisting disc in sequence, and then pass through the detection unit along the spherical surface of the movable abutment plate, so that the end of the outer stranded wire is fixed to the rotating part of the rotating seat and is in close contact with the outer sheath of the inner stranded wire.

[0024] Step 3: Start the rotating seat. The traction part of the rotating seat will cause the end of the inner stranded wire to twist. The ends of multiple outer stranded wires will also rotate and wrap around the inner stranded wire under the rotation of the rotating body part of the rotating seat. The traction part of the rotating seat rotates in the opposite direction to the rotation of the rotating body part. The air supply unit will be turned on to clean the dust and other impurities on the inner and outer stranded wires.

[0025] Step four: The diameter of the stranded wire is detected by the detection unit. When the diameter exceeds the set range, the transmission component is activated. The transmission component drives the locking cylinder to engage with the fixed bundle cylinder. The locking cylinder first reaches its limit position and then stops. Then the transmission component continues to slide and drives the arc plate to deflect from the center to the circumference, adjusting the tension of the outer stranded wire. At the same time, the movable abutment plate extends towards the detection unit. The movable abutment plate presses against the twisted part of the outer stranded wire, shortening the pitch of the loose outer stranded wire and making the outer stranded wire tighter.

[0026] In the above technical solution, the stranding equipment and its method for manufacturing wires and cables provided by the present invention have the following beneficial effects: The outer strand is squeezed in the direction of the strand conveying by the movable abutment plate, reducing the helix angle of the outer strand. Each time the single strand of the outer strand is wound, it is pushed forward by the spherical surface. This allows the subsequent turn of the outer strand to transfer this pushing force forward, causing the preceding spiral to move slightly forward. This compensates for the distance the outer strand slips relative to the inner strand due to insufficient friction, thereby reducing the problem of strand unraveling caused by relative slippage. Furthermore, the air supply unit blows air through the inner and outer strands, reducing dust adhering to the sheath, thus preventing a decrease in friction between the inner and outer strands. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is an overall three-dimensional schematic diagram provided for an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the winding reel and stranding reel provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the swing process of the twisting disc and the arc plate provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the locking cylinder, arc plate, and fixing bundle structure provided in an embodiment of the present invention;

[0032] Figure 5 This is a cross-sectional view of the locking cylinder, arc plate, and fixing bundle provided in an embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the movable stop plate and slide bar structure and the rotating ring structure provided in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the fixed bundle and locking component structure provided in an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram showing the positions of the external twisted wire and the movable arc plate provided in an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Winding reel; 11. Lead-out roller; 2. Stranding reel; 21. Fixed bundle tube; 211. Through slot; 212. Locking element; 213. Flexible clamping block; 214. Slot; 22. Movable stop plate; 221. Card slot; 222. Slide rod; 23. Concave part; 24. Through hole; 25. Ring rod; 26. Rotating ring; 27. Memory metal; 28. Rotating wheel; 3. Detection unit; 31. Elastic element; 4. Air supply unit; 5. Transmission element; 51. Locking cylinder; 52. Arc plate; 53. Rotating rod; 54. Snap-fit ​​block; 55. Clip; 6. Drive rod; 61. Support rod. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 - Figure 7 As shown, a stranding device for manufacturing wires and cables includes stranded wires, and the stranded wires include inner stranded wires and outer stranded wires (such as...). Figure 8(As shown), it also includes a winding disc 1 rotatably mounted on the frame and a wire output roller 11 arranged in a circumferential array on it for winding the outer stranded wire, including a stranding disc 2 rotatably mounted on the frame, on which a fixed bundle cylinder 21 and a movable stop plate 22 are arranged sequentially along the conveying direction.

[0040] like Figure 6 and Figure 8 As shown, the movable stop plate 22 has a hollow structure coaxial with the inner stranded wire and has a spherical surface for limiting the kink position of the outer stranded wire.

[0041] like Figure 1 - Figure 4 As shown, the air supply unit 4 is installed inside the winch 2;

[0042] An arc plate 52, movable within the winch 2, forms an airflow channel with two outlets with the inner wall of the winch 2. Figure 3 One end of the arc plate 52 facing the output roller 11 is one outlet, and the other end of the arc plate 52 facing the fixed bundle cylinder 21 is another outlet. The flow rates of the two outlets are adjustable and are directed toward the inner stranded wire and the outer stranded wire, respectively.

[0043] Transmission component 5 for driving the arc plate 52.

[0044] Specifically, it also includes a drive rod 6 fixedly mounted on the winding reel 1. The drive rod 6 can be an electric telescopic rod or a hydraulic rod, etc. The extended end of the drive rod 6 is fixedly connected to the transmission component 5, and a support rod 61 for sliding the transmission component 5 is fixedly mounted on the winding reel 1. The side of the twisting disc 2 away from the winding reel 1 is the front side, and the side closer to the winding reel 1 is the rear side. A concave portion 23 is provided on the front side of the twisting disc 2, and multiple circular holes are arranged in a circumferential array on the concave portion 23. The spherical surface of the movable abutment 22 extends out of the front side of the twisting disc 2.

[0045] Furthermore, it also includes a rotating seat traction part for stranding the inner strand and a rotating seat rotation part for winding multiple strands of outer strand around the inner strand. The aforementioned devices are common knowledge to those skilled in the art and will not be described in detail here. The outer strands on the multiple output rollers 11 are pulled and passed from the rear side of the stranding disc 2 through the front side of the stranding disc 2, and finally out through the circular hole. The outer strands are rotated by the rotating seat rotation part, causing the outer strands to twist around the inner strand. Due to the setting of the movable abutment 22, the outer strands are squeezed by the spherical surface in the direction of strand delivery, which reduces the helix angle of the outer strands. Figure 8 As shown, during the winding process of the multi-strand outer strand, each outer strand is pushed forward by the spherical surface when it winds one turn. This causes the next turn of the outer strand to transfer the pushing force forward, causing the front spiral to move slightly forward. This compensates for the distance that the outer strand slips backward relative to the inner strand due to the low friction, thereby reducing the problem of strand breakage caused by relative slippage.

[0046] The air supply unit 4 uses a cooling fan, and a rotating rod 53 is rotatably mounted on the transmission component 5 to push the arc plate 52. The drive rod 6 moves the transmission component 5 towards the front of the winch disc 2, thereby causing the rotating rod 53 to push the arc plate 52, making the arc plate 52 move closer to the air supply unit 4. Figure 3 As shown, at this time, the arc plate 52 is a solid line. The arc plate 52 and the inner cavity of the twisting disc 2 form a semi-closed structure. The upper end of the arc plate 52 faces the position of the output roller 11, while the lower end of the arc plate 52 faces the circular hole. The orientation of the air supply unit 4 is guided by the arc plate 52. Since the tangent direction of the upper end of the arc plate 52 is nearly parallel to the air outlet direction of the air supply unit 4, the airflow flows more along the upper end of the arc plate 52 towards the output roller 11 and blows the outer stranded wire, blowing off impurities on the outer stranded wire sheath. As the transmission component 5 moves towards the front of the twisting disc 2 through the drive rod 6, the arc plate 52 moves closer to the air supply unit 4. At this time, the states of the arc plate 52 and the rotating rod 53 are as follows. Figure 3 As shown by the dashed line, the upper end of the arc plate 52 blocks the air supply area of ​​the air supply unit 4, so that the airflow is mainly transported to the circular hole along the lower end of the arc plate 52, and then blown inward along the spherical surface of the movable abutment plate 22 through the circular hole. The air flow rate of different outlets of the air supply unit 4 can be adjusted by the swing of the arc plate 52.

[0047] In the aforementioned technology, the movable abutment 22 compresses the outer strand in the direction of the stranded wire conveyance, reducing the helix angle of the outer strand. During the winding process of the multi-strand outer strand, each strand experiences a forward thrust from the spherical surface when winding one turn. This thrust is then transferred forward with each subsequent turn, causing the preceding spiral to move slightly forward. This compensates for the distance the outer strand slips relative to the inner strand due to low friction, thus reducing the strand unraveling problem caused by relative slippage. Furthermore, the air supply unit 4 blows air through the inner and outer strands, reducing dust adhering to the sheath and preventing a decrease in friction between the inner and outer strands.

[0048] As a further embodiment of the present invention, a detection unit 3 is also provided on the front side of the stranding disc 2, and the detection unit 3 includes an elastic element 31 for detecting the wire diameter.

[0049] Specifically, there are multiple elastic elements 31, each equipped with a piezoelectric crystal. These piezoelectric crystals are connected in series, and the series circuit is electrically connected to the drive rod 6. The detection unit 3 also includes a fixed disc bolted to the front of the twisting disc 2. The fixed disc has holes for the stranded wire to pass through, and multiple elastic elements 31 are arranged in a circumferential array within these holes. When the stranded wire becomes untangled, its diameter increases. The stranded wire then passes through the holes on the fixed disc, and the untangled outer strands press against the elastic elements 31, causing a change in the current passing through the piezoelectric crystals and triggering the drive rod 6. The drive rod 6 drives the transmission component 5 to move towards the front of the twisting disc 2, causing the rotating rod 53 to push the arc plate 52, bringing the arc plate 52 closer to the air supply unit 4.

[0050] At this time, the arc plate 52 swings from the center to the circumference, and the outer strand enters the inner cavity of the stranding disc 2 through the output roller 11, and the outer strand passes out through the circular hole. When the arc plate 52 swings, it abuts against the outer strand, and the arc surface of the arc plate 52 applies pressure to the outer strand, thereby making the outer strand taut and reducing the problem of loose strands.

[0051] As a further embodiment of the present invention, it also includes a locking cylinder 51 located inside the stranding disc 2 and movable along the length of the inner strand, which has a snap-fit ​​station that limits the swing amplitude of the strand.

[0052] The arc plate 52 is hinged to the locking cylinder 51.

[0053] Specifically, the locking cylinder 51 is slidably sleeved on the end of the transmission component 5 and maintains a predetermined distance from the end of the transmission component 5. A retaining spring is provided between the end of the transmission component 5 and the locking cylinder 51. In the initial state, there is a gap between the first end of the locking cylinder 51 and the fixed bundle cylinder 21, and the second end of the locking cylinder 51 is located at the end of the transmission component 5. A snap-fit ​​block 54 that matches the fixed bundle cylinder 21 is fixedly provided on the first end of the locking cylinder 51. The snap-fit ​​block 54 and the fixed bundle cylinder 21 are interference-fitted. When the transmission component 5 moves to the front of the winch disc 2, the retaining spring is pushed by the end of the transmission component 5. Under the elastic force of the retaining spring, the locking cylinder 51 moves synchronously. The locking cylinder 51 drives the snap-fit ​​block 54 to approach the fixed bundle cylinder 21. Then the snap-fit ​​block 54 is inserted into the fixed bundle cylinder 21 and snapped in place by interference fit. The locking cylinder 51 reaches the snap-fit ​​position. Because the rotating body and traction parts inevitably vibrate during operation, the stranded wire swings. The swing amplitude gradually amplifies during transmission, causing significant shaking in the portion of the stranded wire located in the detection unit 3, potentially leading to false triggering of the detection unit 3. By setting a locking cylinder 51 to constrain the inner stranded wire, and given the short distance between the locking cylinder 51 and the detection unit 3, it's equivalent to two closely spaced endpoints constraining the stranded wire. The locking cylinder 51 primarily restricts the inner stranded wire, which is located in the center of the stranded wire, thus effectively limiting its swing amplitude.

[0054] At this time, the transmission component 5 continues to move towards the front of the winch disc 2, causing the transmission component 5 to move forward relative to the locking cylinder 51. The transmission component 5 drives the first end of the rotating rod 53 forward, while the second end of the rotating rod 53 pushes against the arc plate 52. Since the locking cylinder 51 is located in the snap-fit ​​position, the arc plate 52 cannot move forward but can only rotate. The arc plate 52 swings towards the air supply unit 4, as... Figure 3 As shown, it rotates from the solid line position to the dashed line position.

[0055] When a reset is required, the drive rod 6 moves to the rear of the hinge plate 2. At this time, the drive rod 6 drives the transmission component 5 to retract. When the end of the transmission component 5 contacts the second end of the locking cylinder 51 again, it reaches the limit position of the locking cylinder 51, causing the locking cylinder 51 to disengage from the fixed bundle cylinder 21. Then the drive rod 6 drives the locking cylinder 51 to retract together until the locking cylinder 51 and the fixed bundle cylinder 21 return to their initial distance.

[0056] As a further embodiment of the present invention, a plurality of locking members 212 for locking the movable abutment 22 are arranged in a circumferential array and slidably disposed on the fixed bundle tube 21, and the locking members 212 are unlocked when the locking tube 51 reaches the snap-fit ​​position.

[0057] Specifically, the locking member 212 slides radially along the fixed cable tube 21. The locking member 212 has an inclined surface, and the fixed cable tube 21 has a slot 214 for accommodating this inclined surface. Figure 5 As shown. The fixed cable 21 is also equipped with multiple springs for pushing the locking member 212, keeping the locking member 212 in an outwardly extended state. The movable abutment 22 has a slot 221 corresponding to the locking member 212, as shown. Figure 6 As shown. In the initial state, the end of the locking member 212 is located in the slot 221, so that the locking member 212 is between the movable abutment 22 and the fixed cable 21, and the movable abutment 22 is locked.

[0058] The locking block 54 is fixedly equipped with locking pieces 55 in a circumferential array, corresponding to the positions of the locking pieces 212, such as... Figure 4 and Figure 5 As shown, when the locking cylinder 51 reaches the snap-fit ​​position, the snap-fit ​​block 54 enters the fixed bundle cylinder 21, and the snap-fit ​​member 55 enters the slot 214 opened on the fixed bundle cylinder 21. The snap-fit ​​member 55 pushes against the inclined surface, causing the locking member 212 to retract, as shown. Figure 5 As shown in the diagram, after the locking member 212 retracts, it is offset from the movable stop plate 22, allowing the movable stop plate 22 to slide freely.

[0059] As a further embodiment of the present invention, a flexible clamping block 213 is fixedly disposed on the locking member 212 (e.g., Figure 7 (As shown).

[0060] Specifically, when the locking cylinder 51 reaches the snap-fit ​​position, the snap-fit ​​element 55 enters the slot 214 opened on the fixed cable cylinder 21. The snap-fit ​​element 55 pushes against the inclined surface, causing the locking element 212 to retract, as shown below. Figure 5 As shown. At this time, multiple locking components 212 drive the flexible clamping block 213 to move closer to the center, so that the flexible clamping block 213 slightly clamps the inner stranded wire, which further supports the inner stranded wire and prevents the overall swing of the stranded wire from being too large.

[0061] As a further embodiment of the present invention, the fixed bundle tube 21 and the movable abutment 22 form an adjustable-width annular air outlet channel.

[0062] Specifically, such as Figure 6 As shown, a sliding rod 222 is fixedly installed on the movable stop plate 22. The sliding rod 222 slides in conjunction with a through slot 211 on the fixed cable tube 21, allowing the sliding rod 222 to pass through the through slot 211 and reach the rear side of the fixed cable tube 21. At this time, the end of the sliding rod 222 is located inside the locking cylinder 51. The locking cylinder 51 has a rectangular opening to avoid interfering with the rotation of the rotating rod 53, such as... Figure 5 As shown, the slide bar 222 is located inside the rectangular opening and will not interfere with the locking cylinder 51.

[0063] When the locking cylinder 51 reaches the engagement position, the transmission component 5 continues to move towards the front of the winch disc 2, causing the transmission component 5 to move forward relative to the locking cylinder 51. The transmission component 5 pushes against the end of the slide rod 222. Figure 3 As shown, at this time, the movable support plate 22 is pushed from the solid line position to the dotted line position, the movable support plate 22 and the fixed bundle cylinder 21 are no longer in close contact, and an annular air outlet channel is formed between the movable support plate 22 and the fixed bundle cylinder 21.

[0064] Furthermore, as the arc plate 52 moves closer to the air supply unit 4, the states of the arc plate 52 and the rotating rod 53 at this time are as follows: Figure 3 As shown by the dashed line, the upper end of the arc plate 52 blocks the air supply area of ​​the air supply unit 4, so that the airflow is mainly transported to the circular hole along the lower end of the arc plate 52. The airflow enters the annular air outlet channel through the circular hole and finally flows out through the hole in the center of the movable stop plate 22. While blowing away the dust from the inner stranded wire, the airflow ventilates the twisted parts of the inner and outer stranded wires, preventing dust from forming a lubricating layer between the cross-linked polyethylene sheath.

[0065] As a further embodiment of the present invention, the movable abutment 22 is slidably disposed on the fixed bundle tube 21, and the movable abutment 22 is provided with an opening that decreases along the direction of the lead wire.

[0066] Specifically, the opening of the movable stop plate 22 is used for the inner twisted wire. The airflow enters the annular air outlet channel through the round hole and finally flows out through the opening in the center of the movable stop plate 22. As the inner diameter of the opening decreases, it plays a role in concentrating the airflow, so that the airflow velocity gradually increases when passing through, and the velocity is the greatest at the outlet, which plays a role in blowing the kink of the inner and outer twisted wires.

[0067] As a further embodiment of the present invention, the stranding disc 2 is provided with a plurality of through holes 24 corresponding to the lead roller 11 in a circumferential array, and a rotating ring 26 for clamping the outer strand is movably disposed in the through hole 24.

[0068] Specifically, such as Figure 6 As shown, an annular rod 25 is rotatably mounted on the rotating ring 26. The annular rod 25 and the through hole 24 form a keyway fit, so that the annular rod 25 can rotate within the through hole 24. The annular rod 25 and the rotating surface of the rotating ring 26 are perpendicular to each other, so that the rotating ring 26 can rotate omnidirectionally within the through hole 24.

[0069] Furthermore, multiple memory metals 27 are fixedly arranged on the rotating ring 26, and the ends of the memory metals 27 are rotatably connected to the rotating wheels 28. When the external twisted wire passes through, the external twisted wire presses against the rotating wheels 28, causing the angle of the memory metals 27 to change. The rotating wheels 28 always clamp the external twisted wire and can adapt to various angles of the external twisted wire under the universal rotation support of the rotating ring 26.

[0070] like Figure 1 - Figure 7 As shown, a method of using a stranding device for manufacturing wires and cables is applied to a stranding device for manufacturing wires and cables according to the above embodiment:

[0071] Step 1: Pass the inner stranded wire through the hole in the center of the winding disc 1, and pass through the transmission component 5, locking cylinder 51, fixed bundle cylinder 21, movable stop plate 22 and detection unit 3 in sequence, so that the end of the inner stranded wire is fixed to the traction part of the rotating seat.

[0072] Step 2: The outer stranded wire is pulled by the wire exit roller 11, passes through the through hole 24 and the round hole opened on the twisting disc 2 in sequence, and then passes through the detection unit 3 along the spherical surface of the movable abutment plate 22, so that the end of the outer stranded wire is fixed at the rotating part of the rotating seat and is in close contact with the outer sheath of the inner stranded wire.

[0073] Step 3: Start the rotating seat. The traction part of the rotating seat will cause the end of the inner stranded wire to twist. The ends of multiple outer stranded wires will also rotate and wrap around the inner stranded wire under the rotation of the rotating body part of the rotating seat. The traction part of the rotating seat rotates in the opposite direction to the rotation of the rotating body part. The air supply unit 4 will be turned on to clean the dust and other impurities on the inner and outer stranded wires.

[0074] It is worth noting that the descriptions of the rotary seat involved in step three above are all common technical knowledge known to those skilled in the art, and will not be repeated here;

[0075] Step four: The diameter of the stranded wire is detected by the detection unit 3. When the wire diameter exceeds the set range, the transmission component 5 is activated. The transmission component 5 drives the locking cylinder 51 to engage with the fixed bundle cylinder 21. The locking cylinder 51 first reaches its limit position and then stops. Then the transmission component 5 continues to slide and drives the arc plate 52 to deflect from the center to the circumference, adjusting the tension of the outer stranded wire. It also drives the movable abutment plate 22 to extend towards the detection unit 3. The movable abutment plate 22 presses against the twisted part of the outer stranded wire, shortening the pitch of the loose outer stranded wire and making the outer stranded wire tighter.

[0076] Working principle:

[0077] Step 1: Pass the inner stranded wire through the hole in the center of the winding disc 1, and pass through the transmission component 5, locking cylinder 51, fixed bundle cylinder 21, movable stop plate 22 and detection unit 3 in sequence, so that the end of the inner stranded wire is fixed to the traction part of the rotating seat.

[0078] Step 2: The outer stranded wire is pulled by the wire exit roller 11, passes through the through hole 24 and the round hole opened on the twisting disc 2 in sequence, and then passes through the detection unit 3 along the spherical surface of the movable abutment plate 22, so that the end of the outer stranded wire is fixed at the rotating part of the rotating seat and is in close contact with the outer sheath of the inner stranded wire.

[0079] Step 3: Start the rotating seat. The traction part of the rotating seat will cause the end of the inner stranded wire to twist. The ends of multiple outer stranded wires will also rotate and wrap around the inner stranded wire under the rotation of the rotating body part of the rotating seat. The traction part of the rotating seat rotates in the opposite direction to the rotation of the rotating body part. The air supply unit 4 will be turned on to clean the dust and other impurities on the inner and outer stranded wires.

[0080] like Figure 3 As shown, the arc plate 52 is a solid line at this time. The arc plate 52 and the inner cavity of the twisting disc 2 form a semi-closed structure. The upper end of the arc plate 52 faces the position of the output roller 11, while the lower end of the arc plate 52 faces the round hole. The orientation of the air supply unit 4 is guided by the arc plate 52. Since the tangent direction of the upper end of the arc plate 52 is nearly parallel to the air outlet direction of the air supply unit 4, the airflow flows more along the upper end of the arc plate 52 towards the output roller 11 and blows the outer stranded wire, blowing off the impurities on the outer stranded wire sheath.

[0081] Step 4: The diameter of the stranded wire is detected by the detection unit 3. When the wire diameter exceeds the set range, the transmission component 5 is activated. The transmission component 5 drives the locking cylinder 51 to engage with the fixed bundle cylinder 21. The locking cylinder 51 first reaches its limit position and then stops. Then the transmission component 5 continues to slide and drives the arc plate 52 to deflect from the center to the circumference, adjusting the tension of the outer stranded wire. It also drives the movable abutment plate 22 to extend towards the detection unit 3. The movable abutment plate 22 presses against the twisted part of the outer stranded wire, shortening the loose part of the outer stranded wire pitch and making the outer stranded wire tighter.

[0082] When the stranded wire has a problem of unraveling, the wire diameter increases. Then the stranded wire passes through the hole on the fixed disc, and the unraveling outer strand will press against the elastic element 31, causing the current passing through the piezoelectric crystal to change and trigger the drive rod 6.

[0083] When the locking cylinder 51 reaches the snap-fit ​​position, the transmission component 5 continues to move towards the front of the winch disc 2, causing the transmission component 5 to move forward relative to the locking cylinder 51, and the transmission component 5 to push against the end of the slide rod 222. Combined with the arc plate 52 moving closer to the air supply unit 4, the states of the arc plate 52 and the rotating rod 53 at this time are as follows... Figure 3 As shown by the dashed line, the upper end of the arc plate 52 blocks the air supply area of ​​the air supply unit 4, so that the airflow is mainly transported to the circular hole along the lower end of the arc plate 52. The airflow enters the annular air outlet channel through the circular hole and finally flows out through the hole in the center of the movable stop plate 22. While blowing the dust off the inner stranded wire, the airflow ventilates the twisted parts of the inner and outer stranded wires.

[0084] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A stranding device for manufacturing electric wires and cables, comprising stranded wires, wherein the stranded wires include inner stranded wires and outer stranded wires, and further comprising a winding reel (1) rotatably mounted on a frame and output rollers (11) arranged in a circumferential array on the reel for winding the outer stranded wires, characterized in that, It includes a winch disc (2) rotatably mounted on the frame, on which a fixed bundle cylinder (21) and a movable stop plate (22) are arranged sequentially along the conveying direction. The movable stop plate (22) has a hollow structure coaxial with the inner strand and has a spherical surface for limiting the kink position of the outer strand; Air supply unit (4) installed in the winch (2); An arc plate (52) is set inside the twisting disc (2), which, together with the inner wall of the twisting disc (2), forms an airflow channel with two outlets, and the flow rates of the two outlets are adjustable and are directed toward the inner twisted wire and the outer twisted wire respectively; Transmission component (5) for driving the arc plate (52).

2. The stranding equipment for manufacturing wires and cables according to claim 1, characterized in that, It also includes a detection unit (3) located on the front side of the stranding disc (2), the detection unit (3) including an elastic element (31) for detecting wire diameter.

3. The stranding equipment for manufacturing wires and cables according to claim 2, characterized in that, It also includes a locking cylinder (51) located inside the stranding disc (2) and movable along the length of the inner strand, which has a clamping station for limiting the swing amplitude of the strand; The arc plate (52) is hinged to the locking cylinder (51).

4. The stranding equipment for manufacturing wires and cables according to claim 3, characterized in that, The locking sleeve (51) is slidably sleeved on the end of the transmission component (5) and maintains a predetermined distance from the end of the transmission component (5).

5. The stranding equipment for manufacturing wires and cables according to claim 4, characterized in that, The fixed tube (21) is circumferentially arrayed and slidably provided with multiple locking members (212) for locking the movable stop plate (22), and the locking members (212) are unlocked when the locking tube (51) reaches the snap-fit ​​position.

6. The stranding equipment for manufacturing wires and cables according to claim 5, characterized in that, A flexible clamp (213) is fixedly provided on the locking member (212).

7. A stranding device for manufacturing wires and cables according to claim 6, characterized in that, The fixed bundle tube (21) and the movable stop plate (22) enclose each other to form an adjustable-width annular air outlet channel.

8. A stranding device for manufacturing wires and cables according to claim 7, characterized in that, The movable stop plate (22) is slidably disposed on the fixed bundle tube (21), and the movable stop plate (22) is provided with an opening that decreases along the direction of the outgoing line.

9. A stranding device for manufacturing wires and cables according to claim 8, characterized in that, The stranding disc (2) is provided with a plurality of through holes (24) corresponding to the lead roller (11) in a circumferential array, and a rotating ring (26) for clamping the outer strand is movably provided in the through hole (24).

10. A method of using stranding equipment for manufacturing electric wires and cables, characterized in that, Applied to the stranding equipment for manufacturing wires and cables as described in claim 9: Step 1: Pass the inner stranded wire through the hole in the center of the winding disc (1), and pass through the transmission component (5), locking cylinder (51), fixed bundle cylinder (21), movable stop plate (22) and detection unit (3) in sequence, so that the end of the inner stranded wire is fixed to the traction part of the rotating seat; Step 2: Pull the outer stranded wire by the wire exit roller (11), pass through the through hole (24) and the round hole opened on the twisting disc (2) in sequence, and then pass through the detection unit (3) along the spherical surface of the movable abutment plate (22) so that the end of the outer stranded wire is fixed at the rotating part of the rotating seat and is in close contact with the outer sheath of the inner stranded wire. Step 3: Start the rotating seat. The traction part of the rotating seat will cause the end of the inner stranded wire to twist. The ends of multiple outer stranded wires will rotate and wrap around the inner stranded wire under the rotation of the rotating part of the rotating seat. The traction part of the rotating seat rotates in the opposite direction to the rotation of the rotating part. The air supply unit (4) will be turned on to clean the dust and impurities on the inner and outer stranded wires. Step 4: The diameter of the stranded wire is detected by the detection unit (3). When the diameter exceeds the set range, the transmission component (5) is activated. The transmission component (5) drives the locking cylinder (51) to engage with the fixed bundle cylinder (21). The locking cylinder (51) first reaches the limit position and then stops. Then the transmission component (5) continues to slide and drives the arc plate (52) to deflect from the center to the circumference to adjust the tension of the outer stranded wire. It also drives the movable abutment plate (22) to extend towards the detection unit (3). The movable abutment plate (22) presses against the twisted part of the outer stranded wire to shorten the loose part of the outer stranded wire pitch, making the outer stranded wire tighter.

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