Multi-wire stranding machine for transformer winding production

Abstract

The invention provides a multi-wire stranding machine for transformer winding production, and relates to the technical field of transformer winding production. The wire end twisting assembly is installed at the output end of the wire feeding component and used for twisting wire ends of the multiple strands of copper wires into a whole so that the multiple strands of wires can smoothly penetrate through the insulating pipe; the copper coil storage assembly comprises a storage base, multiple sets of storage areas are arranged on the surface of the storage base, an active pay-off component is arranged at the output end of the surface of each set of storage area, and a temporary storage component is arranged at the input end of the surface of each set of storage area; the copper reel comprises a middle shaft tube, one end of the middle shaft tube is connected with a first reel body, and the other end is connected with a second reel body; and the wire continuing assembly is mounted at the top of the storage seat. According to the wire end twisting assembly, multiple strands of copper wire ends can be twisted into a whole, and convenience is provided for the follow-up pipe penetrating procedure; and the wire continuing assembly is linked with the copper coil storage assembly, and the tail of the operating wire is automatically welded with the temporary storage wire head.

Description

Technical Field

[0001] This invention relates to the field of transformer winding production technology, and more specifically to a multi-wire stranding machine for transformer winding production. Background Technology

[0002] As a core power transmission and conversion device, the performance of a transformer's windings directly determines its operational stability, efficiency, and service life. Multi-stranded windings, due to their advantages such as low loss, high mechanical strength, and good heat dissipation, are widely used in the manufacture of medium and large transformers. The multi-stranding process is a crucial step in transformer winding production, requiring the precise stranding of multiple copper wires into a single unit before passing them through an insulating tube to form a winding unit with both insulating and conductive properties. In the process of threading copper wires through insulating tubes, the multiple strands of copper wire are scattered before being twisted together, and their ends lack a uniform constraint structure. This necessitates manual assistance in the subsequent threading process. Operators must manually gather and align the scattered ends of the multiple copper wires before slowly guiding them through the insulating tube. This process is not only time-consuming and labor-intensive, but it is also difficult to guarantee the neatness of the wire ends through manual handling. This can easily lead to some copper wires shifting or twisting, which in turn obstructs the threading process.

[0003] After a copper coil is unwound, the machine needs to be stopped for a reconnection operation. The operator must first turn off the stranding machine, manually align the end of the new copper coil with the end of the copper coil that is about to be used, and then complete the connection by welding or binding. The above manual operation has the following problems: each reconnection takes several minutes or even more than ten minutes, which greatly reduces the overall production efficiency; the precision of manual connection is difficult to control accurately, and problems such as uneven wire diameter and poor contact are prone to occur at the connection point. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-wire stranding machine for transformer winding production, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A multi-wire stranding machine for transformer winding production includes a wire feeding bushing with a wire feeding component installed at its output end, and multiple sets of copper wires running through its interior; a wire end stranding assembly installed at the output end of the wire feeding component for stranding the ends of the multiple copper wires into one piece; a copper coil storage assembly including a storage base with multiple storage areas on its surface; a copper coil reel including a central tube and a first and second reel connected to both ends of the central tube; the first reel has a wire end notch and a wire tail notch, and a wire end positioning clamp and a wire tail positioning clamp are respectively rotatably installed in the wire end notch and the wire tail notch by a torsion spring, and an unlocking mechanism is provided between the wire end positioning clamp and the wire tail positioning clamp; and a wire feeding strip installed at the output end of the transformer winding production process. The input side of the storage stand is used for longitudinally conveying new copper coils; the wire continuation assembly is installed on the top of the storage stand, including a fourth horizontal guide rail, a second vertical guide rail slidably disposed on the fourth horizontal guide rail, and a rotating lifting block slidably disposed at the bottom of the second vertical guide rail. The bottom of the rotating lifting block is connected to a first opening and closing guide rail via a first drive rod. On the bottom surface of the first opening and closing guide rail, symmetrically slidingly mounted are pulling seats with a first pulling component and a second pulling component, respectively. The pulling components are used to clamp and bend the wire ends of the new copper coil and the wire ends of the old copper coil, respectively. The side wall of the first opening and closing guide rail is also fixedly provided with a heating component, which is used to fuse the wire ends and wire ends that are pulled and aligned by the first pulling component and the second pulling component into one piece.

[0006] This invention provides a multi-wire stranding machine for transformer winding production. Compared with the prior art, it has the following advantages: To address the problems of scattered ends, difficulty in threading into insulating tubes, and low efficiency and poor consistency caused by manual twisting of traditional multi-strand copper wires, this invention achieves orderly wire feeding, straightening, and conveying of copper wires through a wire feeding assembly. When the mounting main board moves outward, clamping rollers hold the ends of the multi-strand copper wires extending from the isolation tube, and the wires are twisted together under the drive of the active disc. After twisting, the mounting main board moves inward, causing the clamping rollers to retract to the outside of the isolation tube to avoid obstruction. The wire feeding component then pushes the twisted wire ends through the insulating tube, achieving automatic and reliable twisting and smooth threading of multi-strand copper wire ends.

[0007] Due to the existing problems of low efficiency in manual copper coil replacement, easy loosening of wire ends during turnover, and messy on-site stacking, this invention addresses these issues by using a conveyor belt to transport new copper coils. The constraint blocks and clamping notches on the coil body maintain its vertical stability. The new coil is then clamped by the first and second pulling components of the winding assembly, transferring and precisely docking it to the temporary storage component for positioning. Simultaneously, the wire end and tail positioning clamps automatically unlock and reset to a horizontal ready state under the action of torsion springs. This achieves automatic feeding, positioning, and preparation of new copper coils, ensuring secure fixing of wire ends during turnover and rapid docking, thereby improving production efficiency. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 A schematic diagram of the overall structure of the present invention is shown; Figure 2 A schematic diagram of the wire feeding assembly and wire end twisting assembly of the present invention is shown; Figure 3 A schematic diagram of the wire feeding component of the present invention is shown; Figure 4 A schematic diagram of the top structure of the storage stand of the present invention is shown; Figure 5 A schematic diagram of the conveyor belt structure of the present invention is shown; Figure 6 A schematic diagram of the top structure of the storage area of ​​the present invention is shown; Figure 7 A schematic diagram of the temporary storage component structure of the present invention is shown; Figure 8 A schematic diagram of the structure of the continuation assembly of the present invention is shown; Figure 9 A schematic diagram of the first traction component structure of the present invention is shown; Figure 10 A schematic diagram of the copper reel structure in operation state of the present invention is shown; Figure 11 A schematic diagram of the copper coil turnover state structure of the present invention is shown; Figure 12 A schematic diagram of the second disk body structure of the copper reel of the present invention is shown; Figure 13 This diagram illustrates the initial docking state of the copper reel and the temporary storage component of the present invention. Figure 14 It shows Figure 13 A magnified structural diagram at point A; Figure 15 It shows Figure 13 A magnified structural diagram at point B; Figure 16 This diagram illustrates the initial state structure of the first and second traction components of the present invention. Figure 17 This diagram shows the structural state of the first and second traction components after continuous traction according to the present invention. Figure 18 A schematic diagram of the clamping roller structure of the present invention is shown; Figure 19 A schematic diagram of the structure of the first and second pulling components of the present invention for clamping and transferring the copper reel is shown.

[0010] As shown in the figure: 100. Cable feeding assembly; 110. Pallet; 120. Cable feeding sleeve; 130. Cable conduit plate; 140. Straightening component; 141. First horizontal guide rail; 142. First sliding plate; 143. First guide wheel; 144. Second guide wheel; 150. Cable feeding component; 151. Guide wheel; 152. Fixing plate; 153. Isolation tube; 200. Wire end twisting assembly; 210. Second horizontal guide rail; 220. Mounting main board; 230. Driven plate; 231. Through hole; 240. Clamping roller; 241. Spring support rod; 250. Driven plate. 300. Storage seat; 310. Discharge port; 320. Recycling inclined plate; 400. Active wire feeding component; 410. First vertical plate; 420. Turntable; 421. Double claw clamp; 430. Positioning frame; 431. Buffer groove; 432. Buffer wire output block. 500. Temporary storage component; 510. Third horizontal guide rail; 520. First vertical guide rail; 530. Second vertical plate; 540. Rotating shaft; 550. Inner opening and closing clamping plate; 560. Extrusion block. 600. Copper coil; 610. Central shaft tube; 620. First coil body; 621. Wire end notch; 622. Wire end notch; 630. Second coil body; 640. Wire end positioning clamp; 641. Clamp head; 650. Wire end positioning clamp; 660. Outer arc rib; 661. Clamping notch; 670. Vertical rib; 680. First abutting component; 681. Abutting rod; 682. Clamping seat; 683. Guide seat; 684. Extrusion plate; 685. Return spring; 690. Second abutting component; 700, Tape delivery; 710, Constraint block; 800. Continuation assembly; 810. Fourth horizontal guide rail; 820. Second vertical guide rail; 821. Rotating lifting block; 830. First drive rod; 840. First opening and closing guide rail; 841. Pulling seat; 850. First pulling component; 851. Second drive rod; 852. Assembly plate; 853. Switching shaft; 854. Second opening and closing guide rail; 855. Wire clamp plate; 860. Second pulling component; 870. Heating component; 871. Lifting rod; 872. Third opening and closing guide rail; 873. Heating plate; 874. Tilting motor; 900. Insulating tube. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] As to understand the technical principle of this invention: In the prior art, the production of stranded wire for transformer windings usually relies on manual labor or semi-automatic equipment. The problem is that the ends of the multi-strand copper wires are scattered, requiring workers to manually twist them together before laboriously threading them into the insulating tube, which is inefficient and inconsistent. At the same time, when changing the used copper coil, the machine needs to be stopped, and the ends of the wires need to be cut and matched manually, causing production interruption and affecting efficiency. During the turnover and feeding process of the copper coil, the ends of the wires are not effectively fixed, and they are easy to loosen and tangle, resulting in feeding difficulties or even damage to the wires, which makes it difficult to meet the efficiency requirements of large-scale production.

[0013] Based on this, combined Figures 1-19 As shown, the multi-wire stranding machine for transformer winding production provided by the present invention includes a wire feeding assembly 100, a wire end stranding assembly 200, a copper coil storage assembly, an active wire feeding component 400, a temporary storage component 500, a copper coil spool 600, a feeding belt 700, a winding assembly 800, and an insulating tube 900.

[0014] The purpose is to: set up a wire feeding assembly 100, which ensures that the multi-strand copper wires are laid out neatly through the wire feeding plate 130 and the straightening component 140, and then transports the copper wires to the wire end twisting assembly 200 through the wire feeding component 150. The wire end twisting assembly 200 twists the ends of the multi-strand copper wires together to solve the problem of wire end dispersion and facilitates smooth passage through the insulating tube 900.

[0015] Furthermore, the copper coil storage assembly (including a storage base 300, an active wire feeding component 400, and a temporary storage component 500) allows for the separate placement of copper coils 600 in working and waiting states. Empty copper coils are automatically retrieved via a discharge port 310 and a recovery ramp 320, maintaining a standardized production site. The copper coil 600 is equipped with a wire end positioning clamp 640 and a wire end positioning clamp 650, which, in conjunction with a torsion spring and unlocking mechanism, retract and align with the reinforcing ribs during turnover to prevent loosening. During docking, they automatically unlock and reset for easy traction and reconnection.

[0016] Furthermore, a conveyor belt 700 longitudinally transports new copper coils 600 to the temporary storage unit 500, with a constraint block 710 cooperating with a clamping notch 661 to ensure stable transport of the copper coils 600. Thus, when the copper coil 600 is unloaded during operation, the winding assembly 800 pre-connects the new copper coil 600 input by the conveyor belt 700 to the temporary storage unit 500; during winding continuation, it automatically welds the end of the working wire to the beginning of the temporary wire, achieving seamless winding without the need for manual copper coil replacement. This meets the needs of large-scale transformer winding production.

[0017] In one embodiment of the present invention, such as Figure 1 , Figure 2 as well as Figure 3 As shown, to achieve control over the process from unwinding to pre-twisting of multi-strand copper wires, a wire feeding assembly 100 is proposed, including a support plate 110 and a wire feeding sleeve 120 mounted on the surface of the support plate 110. Multiple sets of copper wires pass through the interior of the wire feeding sleeve 120, with a wire busbar 130 mounted at its input end, a straightening component 140 mounted at its top, and a wire feeding component 150 mounted at the output end of the wire feeding sleeve 120.

[0018] In practice, the path of each copper wire is planned and constrained by the busbar plate 130 to balance its wire length. The busbar plate 130 has a center hole symmetrically opened in the middle of its interior and side holes symmetrically opened at both ends of its interior. The two sets of side holes and the two sets of center holes are located on the same vertical horizontal line. The wire length of the center hole is greater than that of the side hole.

[0019] Based on the above technical concept, it can be understood that the wire threading length of the center hole of the busbar plate 130 is greater than that of the side holes, which can balance the wire feeding length of the copper coils 600 in the middle and on both sides, ensure that multiple sets of copper coils 600 are used up at the same time, reduce the number of times copper coils are replaced individually, and improve production continuity.

[0020] Furthermore, the straightening component 140 eliminates the bending stress generated in the copper wire during unwinding, ensuring the wire is straight. For example... Figure 2 As shown, the straightening component 140 includes a first horizontal guide rail 141, a first sliding plate 142, a first guide wheel 143, and a second guide wheel 144. The first sliding plate 142 is slidably mounted on the top of the first horizontal guide rail 141, and the first guide wheel 143 is rotatably mounted on the inner wall of the top of the first sliding plate 142. The second guide wheel 144 is mounted on one end of the first horizontal guide rail 141. The first guide wheel 143 is located on the top of the wire feeding sleeve 120, and the second guide wheel 144 is located at the input end of the wire feeding sleeve 120. The copper wire passes through the first guide wheel 143 and the second guide wheel 144 in an S-shape.

[0021] Based on the above technical concept, it can be understood that when the copper wire passes through the first and second guide rollers 144 in an S-shape, the bending is corrected by the extrusion of the guide rollers, ensuring that the copper wire is transported in a straight line, thereby improving the subsequent stranding accuracy and winding production quality.

[0022] Furthermore, the wire is clamped and conveyed by the wire feeding component 150, and bundled and guided by the isolation tube 153, precisely delivering neat and straight multi-strand copper wires to the wire stranding station. For example, Figure 2 , Figure 3 As shown, the wire feeding component 150 includes a guide wheel 151, a fixing plate 152, and an isolation tube 153. Two sets of guide wheels 151 are provided, each set symmetrically arranged at the output end of the wire feeding sleeve 120, and multiple strands of copper wire are clamped and fed between the guide wheels 151. A fixing plate 152 is provided at the output end of the guide wheel 151, and an isolation tube 153 is fixedly inserted through the interior of the fixing plate 152. The output end of the isolation tube 153 is tapered, and the isolation tube 153 and the wire feeding sleeve 120 are located at the same centerline.

[0023] Based on the above technical concept, it can be understood that by using the wire feeding sleeve 120, the guide wheel 151 and the isolation tube 153 in combination, the multi-strand copper wires can be constrained and guided to avoid tangling or deviation during the transportation process; and the output end of the isolation tube 153 is conical, which can guide the copper wires smoothly into the wire head stranding assembly 200, improving the smoothness of the stranding operation.

[0024] In one embodiment of the present invention, such as Figure 1 As shown, the proposed wire stranding assembly 200 is used to strand the ends of multiple copper wires into one piece so that the multiple wires can pass smoothly through the insulating tube 900.

[0025] In specific implementation, such as Figure 2 As shown, the wire stranding assembly 200 includes a second horizontal guide rail 210, a mounting main board 220, a driven disc 230, clamping rollers 240, and a driving disc 250. The second horizontal guide rail 210 is mounted at the output end of the wire feeding component 150, with its mounting direction parallel to the copper wire feeding direction. It carries and guides the entire mounting main board 220 to slide back and forth along the direction approaching or away from the wire feeding component 150, thereby achieving precise switching between the stranding operation position and the wire feeding avoidance position.

[0026] Furthermore, two sets of second horizontal guide rails 210 are symmetrically arranged. A mounting main board 220 is slidably mounted on the top of the two sets of second horizontal guide rails 210. A driven plate 230 is rotatably mounted on one end of the outer side of the mounting main board 220. A through hole 231 is opened in the middle of the driven plate 230. The end of the isolation tube 153 extends into the through hole 231. A driving plate 250 is rotatably mounted on the other end of the outer side of the mounting main board 220. The driving plate 250 is connected to the driven plate 230 through a transmission belt.

[0027] Furthermore, such as Figure 18 As shown, spring support rods 241, providing elastic clamping force, are symmetrically embedded inside the perforation 231. Clamping rollers 240 are rotatably mounted at the ends of the spring support rods 241. It can be understood that when the mounting motherboard 220 moves outward, the spring support rods 241 drive the clamping rollers 240 to clamp the extended portions of the multi-strand copper wires. The driving disc 250 drives the driven disc 230 and the clamping rollers 240 to rotate via a transmission belt, achieving uniform twisting of the multi-strand copper wires into one, solving the problem of scattered wire ends making it difficult to pass through the insulating tube 900, and improving tube-passing efficiency. Conversely, when the mounting motherboard 220 moves inward, the two sets of clamping rollers 240 clamp the outside of the isolation tube 153, and the spring support rods 241 are compressed and contracted, thus completely avoiding the copper wire transport path, ensuring that the twisted wire bundle can be smoothly pushed into the insulating tube, realizing the conversion from twisting to tube-passing process.

[0028] In one embodiment of the present invention, such as Figure 1 As shown, this invention aims to achieve zoned management of copper coils from waiting, operation, to recycling. It proposes using multiple storage areas and supporting temporary storage components 500 and active wire feeding components 400 to achieve zoned positioning and rapid switching between the waiting (preparation) and operation (wire feeding) states of the copper coils. Simultaneously, through the cooperation of the feeding port 310 and the recycling ramp 320, the empty coils are automatically detached and centrally guided for recycling after use, improving production efficiency.

[0029] In specific implementation, the copper coil storage assembly includes a storage base 300, which is installed upstream of the input end of the wire feeding assembly 100, extending longitudinally and parallel to the wire feeding assembly 100, located behind or to the side rear of the wire feeding plate 130. This allows the copper wires drawn from each station on the assembly to directly enter the wire feeding plate 130 via a shorter and parallel path. Specifically, as shown... Figure 4 As shown, the surface of the storage seat 300 is provided with multiple sets of storage areas. Each set of storage areas has an active wire feeding component 400 at its surface output end and a temporary storage component 500 at its surface input end. Each set of storage areas has a discharge port 310 at its surface, which is located at the bottom of the active wire feeding component 400. The bottom of the storage seat 300 is provided with a recovery ramp 320, which is located at the bottom of the multiple discharge ports 310.

[0030] In this embodiment, the proposed active wire feeding component 400 includes a first vertical plate 410, a turntable 420, and a positioning frame 430.

[0031] Among them, such as Figure 6As shown, a first vertical plate 410 is vertically disposed on one side of the surface of the storage base 300. A turntable 420 is rotatably mounted on the top of the first vertical plate 410. A double-claw clamping plate 421 is slidably mounted on the side wall of the turntable 420. The double-claw clamping plate 421 is used to clamp the second disc of the positioning copper reel 600. A horizontally disposed positioning frame 430 is fixed on the output side of the first vertical plate 410. A buffer groove 431 is provided in the middle of the positioning frame 430. A buffer cable outlet block 432 is elastically slidably installed inside the buffer groove 431.

[0032] Based on the above technical concept, it can be understood that by precisely clamping the second disc of the copper reel 600 with the double-claw clamp 421, the turntable 420 drives the copper reel 600 to rotate stably for wire feeding, avoiding shaking of the copper reel 600 during the feeding process, ensuring uniform feeding tension, and improving the stability of copper wire delivery; at the same time, the buffer output block 432 slides elastically along the buffer groove 431, which can adapt to fluctuations in feeding speed, absorb tension changes, and prevent the copper wire from being stretched due to excessive tension or loosened due to insufficient tension, thus ensuring the original performance of the copper wire and the continuity of feeding.

[0033] In this embodiment, the proposed temporary storage component 500 includes a third horizontal guide rail 510, a first vertical guide rail 520, a second vertical plate 530, and an inner opening and closing clamping plate 550.

[0034] Among them, such as Figure 6 As shown, the third horizontal guide rail 510 is located on one side of the feed port 310. A first vertical guide rail 520 is slidably mounted on the surface of the third horizontal guide rail 510. A second vertical plate 530 is vertically slidably mounted on the surface of the first vertical guide rail 520. A rotating shaft 540 is rotatably mounted in the middle of the second vertical plate 530. It can be understood that the third horizontal guide rail 510 and the first vertical guide rail 520 work together to adjust the temporary storage position, ensuring precise alignment between the copper coil 600 and the active wire feeding component 400 at the work station, reducing docking and adjustment time. The rotation of the rotating shaft 540 can drive the copper coil 600 to wind up excess copper wire, preventing the copper wire from loosening and tangling during transfer. The second vertical plate 530 drives the copper coil 600 to move smoothly to the work station, ensuring stable copper wire tension, avoiding tensile damage, and guaranteeing the quality of subsequent wire feeding and stranding.

[0035] Furthermore, such as Figure 7 As shown, the inner end of the rotating shaft 540 is provided with an inner opening and closing clamp 550, and the side wall of the second vertical plate 530 is provided with a pressing block 560. The pressing block 560 is located at the bottom of the inner opening and closing clamp 550. The inner opening and closing clamp 550 extends into the central shaft tube 610 to position the copper coil 600. The pressing block 560 is used to simultaneously press the first contact member 680 and the second contact member 690 to perform an unlocking action, so that the wire end positioning clamp 640 and the wire end positioning clamp 650 rotate outward and reset.

[0036] Based on the above technical concept, it can be understood that the inner opening and closing clamping plate 550 extends into the central tube 610 of the copper coil 600 and expands outward to clamp it, thereby achieving precise positioning of the copper coil 600; at the same time, while the copper coil 600 is positioned, the pressing block 560 simultaneously presses the abutment rod 681 of the unlocking mechanism, which can realize the automatic unlocking and reset of the positioning clamp.

[0037] In one embodiment of the present invention, such as Figure 1 As shown, the copper reel 600 includes a central tube 610, a first reel body 620, and a second reel body 630.

[0038] In specific implementation, such as Figure 10 , Figure 11 as well as Figure 12 As shown, one end of the central tube 610 is connected to the first disc 620, and the other end is connected to the second disc 630. The outer walls of both the first and second discs 620 are provided with reinforcing ribs. The interior of the first disc 620 has a wire end notch 621 and a wire tail notch 622. Specifically, the wire end notch 621 and the wire tail notch 622 are located on the same horizontal line and open in opposite directions. A wire end positioning clip 640 is rotatably mounted at the wire end notch 621, and a torsion spring is installed at its rotatable connection point. A wire tail positioning clip 650 is rotatably mounted at the wire tail notch 622, and another torsion spring is installed at its rotatable connection point.

[0039] Based on the above technical concept, it should be noted that, in order to ensure the stability of the laying and the graspability during the continuation of the line,

[0040] like Figure 11 As shown, the length of the wire end notch 622 is greater than the length of the wire head notch 621. The wire head positioning clip 640 is located at the inner end of the wire head notch 621, and the wire tail positioning clip 650 is located at the inner end of the wire tail notch 622. At the same time, the end cross-sections of the wire head positioning clip 640 and the wire tail positioning clip 650 are C-shaped, and the openings of the wire head positioning clip 640 and the wire tail positioning clip 650 both face outward. The wire head of the copper wire coil is inserted into the wire head positioning clip 640, and a wire head extension is reserved. The wire tail of the copper wire coil is inserted into the wire tail positioning clip 650, and a wire tail extension is reserved. The inner sidewalls of the outer ends of the wire head positioning clip 640 and the wire tail positioning clip 650 are provided with clips 641.

[0041] Thus, by having the C-shaped openings of the wire head positioning clamp 640 and the wire tail positioning clamp 650 facing outwards, and in conjunction with the inner wall clamp 641, the copper wire head and tail can be firmly clamped, preventing them from loosening during wire feeding or handling, and ensuring the stability of wire feeding and the gripping ability during wire continuation.

[0042] Meanwhile, the pre-extension portions at the wire start and end provide clear clamping points for the wire clamp plate 855 of the continuation assembly 800, facilitating subsequent L-shaped bending and welding, thus improving the gripping accuracy and continuation efficiency of the continuation assembly 800. The length of the wire end notch 622 is greater than that of the wire start notch 621, and their opening directions are opposite and located on the same horizontal line. This avoids interference between the positioning clamp during installation and rotation, and also meets the operational requirements of releasing the wire end during wire laying and connecting the wire start during wire continuation.

[0043] Furthermore, to ensure that the copper wire ends are securely retracted during handling to prevent loosening, and automatically released for gripping during connection, this invention also proposes an unlocking mechanism installed between the wire end positioning clamp 640 and the wire end positioning clamp 650. Its principle is as follows: like Figure 10 As shown, when the copper coil 600 is rotated, the wire end positioning clamp 640 and the wire end positioning clamp 650 are bent and folded up to be flush with the reinforcing rib. When the copper coil 600 is docked with the temporary storage component 500, the unlocking mechanism abuts against the wire end positioning clamp 640 and the wire end positioning clamp 650 and rotates outward to a horizontal state. The inner side of the active wire feeding component 400 docks with the second coil body 630 of the working state copper coil 600, and the inner side of the temporary storage component 500 docks with the first coil body 620 of the waiting state copper coil 600.

[0044] In specific implementation, in this embodiment, as follows: Figure 13 As shown, the proposed unlocking mechanism includes a first abutting component 680 and a second abutting component 690. The first abutting component 680 and the second abutting component 690 have the same structure.

[0045] Specifically, such as Figure 14 , Figure 15 As shown, the first abutting component 680 includes an abutting rod 681, a retaining seat 682, and a guide seat 683. The retaining seat 682 and the guide seat 683 are located at the same center line and fixed to the side wall of the first disc body 620. The abutting rod 681 slides through the interior of the guide seat 683. The outer wall of the abutting rod 681 is provided with a pressing plate 684. A return spring 685 is installed inside the guide seat 683. The pressing plate 684 is located inside the return spring 685. The outer end of the abutting rod 681 extends into the retaining seat 682. When the wire end positioning clip 640 and the wire end positioning clip 650 are bent and attached to the first disc body 620, the clip head 641 is engaged in the retaining seat 682.

[0046] Based on the above technical concept, it can be understood that when the copper coil 600 is docked with the temporary storage component 500, the pressing block 560 simultaneously presses the two sets of contact rods 681, driving the clamp head 641 to disengage from the clamp seat 682, thus automatically unlocking the positioning clamp. At this time, no manual intervention is required, improving docking and unlocking efficiency and reducing human error. Simultaneously, when the copper coil 600 is rotated, the positioning clamp bends and retracts, and the clamp head 641 engages with the clamp seat 682 for locking. Combined with the compression of the torsion spring, this ensures that the positioning clamp is flush with the reinforcing rib, facilitating stacking and rotation while preventing accidental opening and loosening of wire ends. Finally, after unlocking, the torsion spring drives the positioning clamp to automatically rotate outward to a horizontal working state, ensuring the positioning clamp's reset accuracy.

[0047] Furthermore, to enhance the structural strength of the copper coil 600, prevent deformation, and extend its service life, reinforcing ribs are proposed, including outer arc ribs 660 and vertical ribs. Among them, such as... Figure 11 , Figure 12 As shown, the outer arc ribs 660 are symmetrically arranged, and a clamping notch 661 is provided in the middle of the outer arc ribs 660. A vertical rib 670 is provided on the inner side of the middle of the outer arc ribs 660.

[0048] In one embodiment of the present invention, such as Figure 1 As shown, the conveyor belt 700 is installed on the input side of the storage base 300 to longitudinally convey multiple sets of new copper coils 600. It should be noted that to ensure the copper coils 600 remain vertically aligned during transport, avoiding tilting or offset, and to guarantee the subsequent docking accuracy with the temporary storage component 500 and the active wire feeding component 400, specific implementation details are as follows: Figure 5 , Figure 11 As shown, the surface of the feed belt 700 is provided with constraint blocks 710 arranged in a longitudinal linear array. When the copper coil 600 is placed on the feed belt 700, the two sets of constraint blocks 710 are respectively inserted into the clamping notches 661 at the bottom of the first coil 620 and the bottom of the second coil 630.

[0049] In one embodiment of the present invention, such as Figure 1 As shown, the wire continuation assembly 800 is installed on top of the storage base 300. To achieve seamless wire continuation without the need for manual copper coil replacement and to significantly improve production efficiency, the wire continuation assembly 800 is linked with the copper coil storage assembly: in the working state (when the copper wire reel is unloading), the copper coil reel 600 input by the feed belt 700 is connected to the temporary storage component 500; in the working state (when the copper wire reel is continuating), the wire end in the wire end positioning clamp 640 in the working state and the wire end in the wire end positioning clamp 650 in the temporary storage state are connected as one unit.

[0050] In specific implementation, the continuation assembly 800 includes two sets of fourth horizontal guide rails 810, a second vertical guide rail 820, a first drive rod 830, a first opening and closing guide rail 840, a first pulling component 850, and a second pulling component 860.

[0051] Among them, such as Figure 8 As shown, the top of the two sets of fourth horizontal guide rails 810 are slidably connected to the second vertical guide rail 820. The bottom of the second vertical guide rail 820 is slidably installed with a rotating lifting block 821. The bottom of the rotating lifting block 821 is vertically provided with a first drive rod 830. The bottom end of the first drive rod 830 is provided with a first opening and closing guide rail 840.

[0052] Understandably, the purpose of proposing the first opening and closing guide rail 840 is to realize the opening, closing, and displacement control of the first pulling component 850 and the second pulling component 860 during the continuation process. At the same time, through the cooperation of the fourth horizontal guide rail 810, the second vertical guide rail 820, and the self-rotating lifting block 821, the continuation assembly 800 can move flexibly and adjust its angle in the horizontal and vertical directions, and can accurately connect with the copper reel 600 in the temporary storage state and the working state, adapting to the needs of dual-station operation.

[0053] Furthermore, two sets of pull seats 841 are symmetrically slidably mounted on the bottom surface of the first opening and closing guide rail 840. Specifically, a first pull component 850 is mounted on the bottom of one set of pull seats 841, and a second pull component 860 is mounted on the bottom of the other set of pull seats 841. It can be understood that the purpose of the first and second pull components is to precisely clamp the wire end and the protruding part of the wire tail and bend them into an L-shape to ensure that the two are precisely aligned at the heating component 870.

[0054] In this embodiment, a heating component 870 is fixed to the side wall of the first opening and closing guide rail 840. The heating component 870 is located between the first pulling component 850 and the second pulling component 860 and is close to the second pulling component 860. It should be noted that the first pulling component 850 is used to bend and pull the end of the wire in the temporary storage state to the heating component 870, and the second pulling component is used to bend and pull the end of the wire in the working state to the heating component 870. The heating component 870 is used to fuse the end of the wire and the end of the wire into one piece.

[0055] In this embodiment, as Figure 8 As shown, the heating component 870 includes a hanging rod 871, a heating plate 873, and a tilting motor 874. The tilting motor 874 is located on the side wall of the first opening and closing guide rail 840. The output end of the tilting motor 874 is connected to the top end of the hanging rod 871. The bottom end of the hanging rod 871 is connected to a vertically arranged third opening and closing guide rail 872. The heating plate 873 is symmetrically and slidably installed on the inner wall of the third opening and closing guide rail 872.

[0056] Understandably, the third opening and closing guide rail 872 of the heating component 870 drives the heating plate 873 to clamp and weld, improving the joint strength and ensuring the stability of the copper wire's conductivity; the flipping motor 874 drives the lifting rod 871 to rotate the heating component 870 to avoid interference, and the self-rotating lifting block 821 drives the pulling component to switch directions with the heating component 870, avoiding interference when the copper coil 600 is transferred or docked, thus improving operational safety.

[0057] Since the automatic reconnection process requires alternating between two operations: copper reel transfer and wire end pulling, using two separate execution mechanisms would result in a complex structure, increased space requirements, and longer switching times. Therefore, in this embodiment, as... Figure 8 , Figure 9 as well as Figure 19 As shown, the first pulling component 850 and the second pulling component 860 adopt the same structure. This embodiment uses the first pulling component 850 as an example for explanation: In specific implementation: the first pulling component 850 includes a second drive rod 851, an assembly plate 852, a switching shaft 853, a second opening and closing guide rail 854, and a wire clamp plate 855. For example... Figure 8 as well as Figure 9 As shown, the top end of the second drive rod 851 is fixedly installed on the pull seat 841 at the bottom of the first opening and closing guide rail 840. The bottom end of the second drive rod 851 is provided with an assembly plate 852. One end of the assembly plate 852 is rotatably provided with a switching shaft 853. The bottom end of the switching shaft 853 is provided with a second opening and closing guide rail 854. The bottom of the second opening and closing guide rail 854 is symmetrically and slidably installed with wire clamps 855.

[0058] It is understandable that, such as Figure 16 , Figure 17 As shown, during wire continuation, the wire clamp 855 clamps the protruding part of the wire head or tail; during wire release, the wire clamp 855 is fitted into the clamping notch 661 on the top of the first reel 620 and the top of the second reel 630 to clamp and transfer the new copper reel 600. Thus, through the combined functions of clamping and transferring the copper reel 600 and pulling and bending the copper wire head / tail of the first and second pulling components, different operational requirements can be adapted by adjusting the angle of the switching shaft 853 in practical applications.

[0059] For ease of understanding, the operating principle of the multi-wire stranding machine for transformer winding production proposed in this invention is as follows: S1. Stranding and Conduit Insertion: The working copper reel 600 releases wire under the drive of the active wire release component 400. After passing through a buffer, converging at the wire feeding plate 130, and straightening at the straightening component 140, the copper wire is fed out by the wire feeding component 150 through the isolation tube 153. Wire End Stranding Process: The mounting main plate 220 of the wire end stranding assembly 200 moves outward, driving the clamping rollers 240 on it to clamp and rotate the extended ends of the multiple copper wires, stranding them together. Conduit Insertion Switching: After stranding, the mounting main plate 220 moves inward, causing the clamping rollers 240 to retract to the outside of the isolation tube 153 to avoid obstruction. The wire feeding component 150 pushes the stranded wire end through the insulating tube 900.

[0060] S2. New Coil Replenishment and Preparation: Loading and Conveying: The new copper coil 600 is conveyed to the storage area 300 via the conveyor belt 700. Coil Transfer and Docking: The first and second pulling components (850, 860) of the winding assembly 800 clamp the new coil, transferring and precisely docking it to the temporary storage component 500. Positioning Clamp Unlocking: During docking, the pressing block 560 of the temporary storage component 500 triggers the unlocking mechanism on the copper coil 600, causing the end / end positioning clamps (640, 650) to automatically unlock and reset to the horizontal ready state.

[0061] S3. Automatic Thread Reconnection and Replacement: Thread End Grabbing: The first and second pulling components (850, 860) of the thread reconnection assembly 800 respectively grip the thread head of the temporary roll and the thread tail of the working roll, and bend them into an L-shape. Welding: The two pulling components move the bent thread ends to the heating component 870, where the heating plate 873 welds them together.

[0062] S4. Old roll recycling and new roll delivery: After welding, the empty roll is released and falls through the feed port 310 to the recycling inclined plate 320; the temporary storage unit 500 transfers the wired new roll to the active wire feeding unit 400 station, becoming a new working roll, and completing the automatic replacement.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-wire stranding machine for transformer winding production, characterized in that, include: The wire feeding sleeve has a wire feeding component installed at its output end, and multiple sets of copper wires run through its interior. A wire twisting assembly is installed at the output end of the wire feeding component and is used to twist the ends of multiple copper wires into one piece. A copper coil storage assembly includes a storage base, the surface of which is provided with multiple storage areas; A copper coil includes a central tube and a first coil body and a second coil body connected to both ends of the central tube; the first coil body has a wire start notch and a wire end notch, and a wire start positioning clamp and a wire end positioning clamp are respectively installed in the wire start notch and the wire end notch by a torsion spring, and an unlocking mechanism is provided between the wire start positioning clamp and the wire end positioning clamp. A conveyor belt, installed on the input side of the storage seat, is used for longitudinally conveying new copper coils; The cable continuation assembly, installed on the top of the storage base, includes a fourth horizontal guide rail, a second vertical guide rail slidably mounted on the fourth horizontal guide rail, and a rotating lifting block slidably mounted at the bottom of the second vertical guide rail. The bottom of the rotating lifting block is connected to a first opening and closing guide rail via a first drive rod. On the bottom surface of the first opening and closing guide rail, symmetrically slidingly mounted are pulling seats, each equipped with a first pulling component and a second pulling component. The pulling components are used to clamp and bend the wire ends of the new copper coil and the wire ends of the old copper coil, respectively. A heating component is also fixedly provided on the side wall of the first opening and closing guide rail for fusing the wire ends and wire ends that are aligned by the first pulling component and the second pulling component into one piece.

2. The multi-wire stranding machine for transformer winding production according to claim 1, characterized in that: The unlocking mechanism is used to ensure that the wire ends are firmly fixed during the turnover and stacking of the copper coil when the wire head positioning clamp and the wire tail positioning clamp are bent down and retracted; and to release the lock when the copper coil is docked with the temporary storage component, so that the positioning clamp automatically returns to the horizontal working state, so as to facilitate subsequent wire pulling and splicing operations. The unlocking mechanism includes two sets of identical contact components. Each contact component includes a contact rod, a guide seat, and a locking seat. The locking seat and the guide seat are located on the same center line and are both fixed to the side wall of the first disc. The contact rod slides through the interior of the guide seat. A pressing plate is provided on the outer wall of the contact rod. A return spring is installed inside the guide seat. The pressing plate is located inside the return spring. The outer end of the contact rod extends into the locking seat. When the wire end positioning clamp and the wire tail positioning clamp are bent and attached to the first disc, the locking head is locked into the locking seat.

3. The multi-wire stranding machine for transformer winding production according to claim 1, characterized in that: Each storage area is equipped with an active wire feeding component at its output end and a temporary storage component at its input end, and a feeding port is provided at the bottom of the active wire feeding component; the active wire feeding component includes a first vertical plate, a turntable and a positioning frame, wherein the first vertical plate is vertically disposed on one side of the surface of the storage seat, the turntable is rotatably mounted on its top, and a double-claw clamp is slidably mounted on the side wall of the turntable for clamping the second disc of the positioning copper coil; a horizontally disposed positioning frame is fixed on the output side of the first vertical plate.

4. The multi-wire stranding machine for transformer winding production according to claim 1, characterized in that: The first and second pulling components have the same structure. Each pulling component includes a second drive rod, an assembly plate, a switching shaft, a second opening and closing guide rail, and a wire clamp. The top end of the second drive rod is fixedly installed on the pulling seat, and the bottom end of the second drive rod is provided with an assembly plate. One end of the assembly plate is rotatably provided with a switching shaft, and the bottom end of the switching shaft is provided with a second opening and closing guide rail. Wire clamps are symmetrically slidably installed on the bottom of the second opening and closing guide rail. During wire continuation, the wire clamps are used to clamp the protruding part of the wire head or the protruding part of the wire tail. During wire release, the wire clamps are fitted into the clamping notches on the top of the first and second reels to clamp and transfer new copper reels.

5. The multi-wire stranding machine for transformer winding production according to claim 3, characterized in that: The temporary storage component includes a third horizontal guide rail, a first vertical guide rail, a second vertical plate, and an inner opening and closing clamping plate. The third horizontal guide rail is located on one side of the feed port, and the first vertical guide rail is slidably mounted on its surface. The second vertical plate is vertically slidably mounted on the surface of the first vertical guide rail. A rotating shaft is rotatably mounted in the middle of the second vertical plate, and the inner end of the rotating shaft is provided with an inner opening and closing clamping plate for extending into the shaft tube to position the copper coil. The side wall of the second vertical plate is provided with a pressing block for simultaneously pressing the abutting component of the unlocking mechanism during docking, driving the wire end positioning clamp and the wire end positioning clamp to unlock and rotate outward to reset.

6. The multi-wire stranding machine for transformer winding production according to claim 1, characterized in that: A straightening component is installed at the top of the input end of the wire feeding sleeve; wherein, the straightening component includes a first horizontal guide rail, a first sliding plate, a first guide wheel and a second guide wheel, the first sliding plate is slidably installed on the top of the first horizontal guide rail, the first guide wheel is rotatably installed on the first sliding plate, and the second guide wheel is installed at one end of the first horizontal guide rail. The first guide wheel and the second guide wheel are respectively located above the wire feeding sleeve and at the input end, and the copper wire passes through them in an S-shape to achieve straightening; The wire feeding component includes two sets of guide wheels symmetrically arranged at the output end of the wire feeding sleeve, used to clamp and feed copper wire, a fixing plate, and an isolation tube; the output end of the two sets of guide wheels is provided with a fixing plate, and an isolation tube with a tapered output end passes through the fixing plate, and the isolation tube and the wire feeding sleeve are located on the same center line.

7. The multi-wire stranding machine for transformer winding production according to claim 1, characterized in that: The wire stranding assembly includes a second horizontal guide rail, a mounting main board, a driven plate, clamping rollers, and a driving plate. Two sets of the second horizontal guide rail are symmetrically arranged, with a mounting main board slidably mounted on its top. A driven plate is rotatably mounted on one end of the mounting main board, and a driving plate is rotatably mounted on the other end. The driving plate drives the driven plate via a transmission belt. A through hole is provided in the center of the driven plate for the end of the isolation tube to extend into. Spring support rods are symmetrically embedded in the through hole, and clamping rollers are rotatably mounted on the ends of the spring support rods. When the mounting main board moves outward, the two sets of clamping rollers clamp the multiple strands of copper wire extending from the isolation tube and, driven by the driven plate, strand their ends together. When the mounting main board moves inward, the clamping rollers move and clamp the outside of the isolation tube.

8. The multi-wire stranding machine for transformer winding production according to claim 4, characterized in that: A heating component is provided between the first and second traction components, and near the position of the second traction component; the heating component includes a tilting motor and a lifting rod, wherein the tilting motor is located on the side wall of the first opening and closing guide rail, the output end of the tilting motor is connected to the top of the lifting rod, the bottom end of the lifting rod is connected to a vertically arranged third opening and closing guide rail, and heating plates are symmetrically slidably installed on the inner wall of the third opening and closing guide rail.

9. The multi-wire stranding machine for transformer winding production according to claim 2, characterized in that: The wire head positioning clamp and the wire tail positioning clamp are respectively located at the inner end of their corresponding notches. The end cross-section of both is C-shaped and the opening faces outward. They are used to insert and fix the wire head and the wire tail of the copper wire coil, while reserving an outward extension for subsequent operations. The inner side wall of the outer end of the wire head positioning clamp and the wire tail positioning clamp are provided with a locking head, which is used to cooperate with the locking seat of the unlocking mechanism to achieve locking when the positioning clamp is bent and retracted.

10. The multi-wire stranding machine for transformer winding production according to claim 4, characterized in that: The outer walls of the first and second coils are provided with reinforcing ribs, which include symmetrically arranged outer arc ribs and vertical ribs located on their inner sides. The outer arc ribs have a clamping notch in the middle. The surface of the feed belt is provided with longitudinally linear array of constraint blocks. When the copper coil is placed on the feed belt, the clamping notches at the bottom of the two coils are respectively engaged in the corresponding constraint blocks to achieve stable positioning and anti-tipping of the copper coil during the conveying process.

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