Wire drawing device for fireproof cable copper core production

Abstract

The utility model relates to the technical field of copper core wire drawing, and discloses a wire drawing device for fireproof cable copper core production, which comprises a wire drawing machine, one side of the wire drawing machine is fixedly connected with a pay-off roller, one side of the wire drawing machine is provided with a wire drawing box, the outer wall of the wire drawing machine is provided with a straightening assembly, and the straightening assembly comprises a fixing plate. The bottom of the fixing plate is fixedly connected to the outer wall of the wire drawing machine, a supporting plate is slidably connected to the top of the fixing plate, a plurality of supporting blocks are fixedly connected to the top of the supporting plate, first extrusion wheels are slidably connected to the interiors of the supporting blocks, and dismounting assemblies which are in bilateral symmetry are arranged in the fixing plate. According to the copper rod straightening and guiding device, the sliding block is driven to slide in the supporting block by rotating the screw rod, so that the effect of straightening and guiding the copper rod is achieved, the problem that a copper wire is bent due to the poor initial form of the copper rod and uneven wire drawing stress is solved, and the straightness standard reaching rate and the production efficiency of the copper wire are improved.

Description

Technical Field

[0001] This utility model relates to the field of copper core drawing technology, and in particular to a drawing device for producing copper cores of fireproof cables. Background Technology

[0002] With the rapid development of modern urban construction, the requirements for fire safety in high-rise buildings, subways, large commercial complexes and other places are becoming increasingly stringent. Fire-resistant cables are key materials for ensuring the continuous and stable operation of electrical equipment in extreme situations such as fires. Their performance is directly related to the safety of people's lives and property and the effectiveness of emergency rescue. Copper core, with its good conductivity, ductility and stability, has become the core conductive element of fire-resistant cables. As the core equipment for copper core production, the technical level of the wire drawing device directly determines the quality of the copper core, and thus affects the overall performance of the fire-resistant cable. Therefore, the research and optimization of wire drawing devices has important practical significance.

[0003] The existing wire drawing device for producing copper cores of fireproof cables mainly consists of a wire feeding mechanism, a wire drawing box, and a wire take-up mechanism. The wire feeding mechanism is responsible for releasing the copper rod to be processed. The variable speed wire drawing wheel in the wire drawing box stretches and reduces the diameter of the copper rod by rotating. The wire take-up mechanism winds up the processed copper wire. The entire device realizes the processing process from copper rod to copper wire through the coordinated operation of each component.

[0004] However, in actual production, existing wire drawing devices have significant defects. Due to the bending and twisting of the copper rod in its initial state, and the uneven stress on various parts during the wire drawing process, the produced copper wire is prone to bending and twisting. These shape defects cause uneven stress distribution inside the copper wire, making the resistance value of the copper core in the fireproof cable unstable, which seriously affects the conductivity of the cable, thereby weakening the emergency power supply capability of the fireproof cable in fire scenarios and threatening the safe and stable operation of the power system. To address these issues, a wire drawing device for the production of copper cores for fireproof cables is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a wire drawing device for the production of copper cores for fireproof cables. It aims to improve the problem that existing wire drawing devices suffer from shape defects such as bending and twisting of the produced copper wires due to the initial shape of the copper rod and uneven force during wire drawing, which in turn causes unstable copper core resistance and affects the conductivity of fireproof cables.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wire drawing device for producing copper cores of fireproof cables includes a wire drawing machine, a wire feeding roller fixedly connected to one side of the wire drawing machine, a wire drawing box provided on one side of the wire drawing machine, and a straightening component provided on the outer wall of the wire drawing machine;

[0008] The straightening assembly includes a fixed plate, the bottom of which is fixedly connected to the outer wall of the wire drawing machine. A support plate is slidably connected to the top of the fixed plate, and multiple support blocks are fixedly connected to the top of the support plate. Each of the multiple support blocks has a pressing roller slidably connected inside. A screw is threadedly connected inside the support block, and a rotating shaft is slidably connected to one end of the screw. A spring is provided at the bottom of the rotating shaft, one end of which is fixedly connected to the bottom of the rotating shaft, and the other end is fixedly connected to a slider. The outer wall of the slider is slidably connected to the inside of the support block, and a pressing roller is slidably connected inside the slider. The fixed plate has symmetrical disassembly assemblies.

[0009] As a further description of the above technical solution:

[0010] The symmetrical disassembly components each include a connecting block and a fixing shaft. The bottom of the connecting block is fixedly connected to the top of the support plate, and the top of the fixing shaft is fixedly connected to the lower surface of the connecting block.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the fixed shaft is slidably connected to the inside of the fixed plate, and the fixed plate has a slot inside.

[0013] As a further description of the above technical solution:

[0014] A transmission rod is slidably connected inside the connecting block, and a pull plate is fixedly connected to the top of the transmission rod.

[0015] As a further description of the above technical solution:

[0016] An extrusion disc is fixedly connected to the bottom end of the transmission rod, and an extrusion shaft is fixedly connected to the bottom end of the extrusion disc.

[0017] As a further description of the above technical solution:

[0018] Multiple limiting balls are slidably connected inside the fixed shaft, and each of the multiple limiting balls fits into the slot.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the extrusion shaft is in contact with the limiting ball, and the outer wall of the transmission rod is provided with a spring.

[0021] As a further description of the above technical solution:

[0022] One end of the spring is fixedly connected to the inner wall of the connecting block, and the other end is fixedly connected to the side wall of the extrusion disc.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by passing one end of the copper rod through the support plate and the second extrusion wheel, and by rotating the screw, the slider is driven to slide inside the support block, thereby compressing the first spring, causing the first spring to undergo elastic deformation, adjusting the extrusion force between the support plate and the second extrusion wheel, thereby achieving the effect of straightening and guiding the copper rod. This solves the problem of copper wire bending caused by poor initial shape of the copper rod and uneven wire drawing force, and improves the straightness compliance rate of copper wire and production efficiency.

[0025] 2. In this utility model, by pulling the pull plate, the transmission rod slides inside the connecting block, which further drives the extrusion shaft to move. The movement of the extrusion shaft releases the limiting ball, allowing the limiting ball to slide inside the fixed shaft and the slot. This achieves the effect of quickly installing and disassembling the straightening component, solving the problem of tedious and time-consuming installation and disassembly of the straightening component, and improving the equipment maintenance efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a wire drawing device for producing copper cores of fireproof cables according to the present invention;

[0027] Figure 2 This is a schematic diagram of the side of the wire drawing machine of the wire drawing device for producing copper core of fireproof cable proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the structure of one side of the wire feeding roller of a wire drawing device for producing copper core of fireproof cable according to the present invention.

[0030] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0031] Legend:

[0032] 1. Wire drawing machine; 2. Wire feeding roller; 3. Wire drawing box; 4. Support plate; 5. Extrusion roller one; 6. Support block; 7. Screw; 8. Rotating shaft; 9. Spring one; 10. Slider; 11. Extrusion roller two; 12. Fixing plate; 13. Connecting block; 14. Fixing shaft; 15. Transmission rod; 16. Pulling plate; 17. Extrusion plate; 18. Extrusion shaft; 19. Limit ball; 20. Slot; 21. Spring two. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1-3 The present invention provides an embodiment of a wire drawing device for producing copper cores of fireproof cables, comprising a wire drawing machine 1, a wire feeding roller 2 fixedly connected to one side of the wire drawing machine 1, and a wire drawing box 3 provided on one side of the wire drawing machine 1. The wire drawing box 3 is composed of a box body, a variable speed wire drawing wheel, and a mold, and its function is to perform wire drawing on copper rods. This is prior art and will not be described in detail here. A straightening component is provided on the outer wall of the wire drawing machine 1, which is used to quickly straighten the copper rods.

[0035] The straightening assembly includes a fixed plate 12, which is fixedly connected to the outer wall of the wire drawing machine 1 at its bottom. The fixed plate 12 provides stable support and connection for the straightening assembly. A support plate 4 is slidably connected to the top of the fixed plate 12, and multiple support blocks 6 are fixedly connected to the top of the support plate 4. Each support block 6 has a pressing roller 5 slidably connected inside. The pressing roller 5 works in conjunction with the pressing roller 11 to press the copper rod and quickly adjust its state. It also provides guidance for the copper rod. A screw 7 is threaded inside the support block 6. The screw 7 facilitates the user's adjustment of the pressing roller 5. The extrusion force between the screw 7 and the extrusion roller 11 is slidably connected to a rotating shaft 8 at one end. A spring 9 is set at the bottom of the rotating shaft 8. The function of the spring 9 is to extrude the extrusion roller 11 through its own elastic deformation, and at the same time provide the extrusion roller 11 with self-adaptability, so as to adapt to copper rods of different sizes. One end of the spring 9 is fixedly connected to the bottom of the rotating shaft 8, and the other end is fixedly connected to a slider 10. The outer wall of the slider 10 is slidably connected to the inside of the support block 6. The extrusion roller 11 is slidably connected inside the slider 10. The fixing plate 12 is provided with left and right symmetrical disassembly components. The function of the disassembly components is to facilitate the user to quickly install and disassemble the straightening components.

[0036] Specifically, when existing wire drawing devices suffer from initial bending and twisting of the copper rod, and uneven force distribution during the drawing process, resulting in bending and twisting defects in the produced copper wire, affecting the conductivity of the fireproof cable copper core, the automatic wire feeding function is achieved through the wire feeding roller 2. This smoothly introduces the copper rod into the drawing process. The close cooperation between the wire feeding roller 2 and the wire drawing box 3 ensures that the copper rod can enter the next process evenly and stably during the drawing process. During the wire drawing operation, the operator guides the copper rod through the space between the extrusion roller 5 and the extrusion roller 11, ensuring that the copper rod maintains a suitable state during the drawing process. In this process, the rotation of the screw 7 plays a role. Through the up-and-down movement of the screw 7 inside the support block 6, the screw 7 drives the spring 9 to undergo elastic deformation, adjusting the extrusion pressure between the extrusion roller 5 and the extrusion roller 11. The mutual extrusion action between the extrusion roller 5 and the extrusion roller 11 straightens the copper rod, ensuring that the copper rod is sufficiently flat before drawing, thereby guaranteeing the stability and accuracy of subsequent processing.

[0037] Reference Figure 4 and Figure 5 The symmetrical disassembly components each include a connecting block 13 and a fixed shaft 14. The bottom of the connecting block 13 is fixedly connected to the top of the support plate 4, and the top of the fixed shaft 14 is fixedly connected to the lower surface of the connecting block 13. The connecting block 13 and the fixed shaft 14 provide stable support and connection for the disassembly components, ensuring stable movement. The outer wall of the fixed shaft 14 is slidably connected to the inside of the fixed plate 12. The fixed plate 12 has a slot 20 inside, which restricts the movement of the limiting ball 19, thereby achieving quick locking. A transmission rod 15 is slidably connected inside the connecting block 13, and a pull plate 16 made of rubber is fixedly connected to the top of the transmission rod 15 to facilitate operation. The disassembly assembly is moved quickly by personnel. The bottom end of the transmission rod 15 is fixedly connected to the extrusion plate 17, and the bottom end of the extrusion plate 17 is fixedly connected to the extrusion shaft 18. The function of the extrusion shaft 18 is to extrude the limiting ball 19, so that the limiting ball 19 can be stably locked into the slot 20. Multiple limiting balls 19 are slidably connected inside the fixed shaft 14. All the multiple limiting balls 19 are engaged with the slot 20. Through the cooperation of the limiting balls 19 and the slot 20, the quick locking and unlocking function of the disassembly assembly can be realized. The outer wall of the extrusion shaft 18 is in contact with the limiting ball 19. The outer wall of the transmission rod 15 is provided with a second spring 21. One end of the second spring 21 is fixedly connected to the inner wall of the connecting block 13, and the other end is fixedly connected to the side wall of the extrusion plate 17.

[0038] Specifically, when the wire drawing device needs repair due to a malfunction in the straightening component, or when a straightening component of the appropriate specification needs to be replaced for different production tasks, the operator can pull the pull plate 16 to generate a pulling force, causing the transmission rod 15 to slide inside the connecting block 13. The sliding of the transmission rod 15 then drives the extrusion plate 17 and the extrusion shaft 18 to move synchronously. The movement of the extrusion shaft 18 releases the extrusion force on the limit ball 19, allowing the limit ball 19 to slide freely between the slot 20 and the fixed shaft 14, reaching the unlocked state. This allows the operator to quickly disassemble the straightening component, simplifying the maintenance process. At the same time, the movement of the extrusion plate 17 applies pressure to the second spring 21, causing the second spring 21 to undergo elastic deformation and store elastic potential energy. When the component needs to be reinstalled, the elastic restoring force of the second spring 21 will drive the extrusion shaft 18 to reset, and the extrusion limit ball 19 will re-enter the slot 20, thereby achieving rapid locking. This ensures that the device operates efficiently while also having convenient maintenance and adjustment functions, improving the overall stability and working efficiency of the equipment.

[0039] Working Principle: When using this cable copper core wire drawing device, the wire feeding roller 2 first achieves automatic wire feeding. In conjunction with the wire drawing box 3, it performs wire drawing on the copper rod. During the drawing process, the operator guides the copper rod through the space between the first extrusion roller 5 and the second extrusion roller 11. Then, by rotating the screw 7, it moves up and down inside the support block 6. This movement further compresses the first spring 9, causing it to elastically deform. This adjusts the extrusion pressure between the first extrusion roller 5 and the second extrusion roller 11 while providing an adaptive effect for the copper rod size, ensuring the copper rod is flat before drawing and guaranteeing stability in subsequent processing. When maintenance and straightening of the assembly are required... By pulling the pull plate 16, the transmission rod 15 slides inside the connecting block 13 under the pulling force. The sliding of the transmission rod 15 further drives the extrusion plate 17 and the extrusion shaft 18 to move synchronously. When the extrusion shaft 18 moves, it will release the extrusion force on the limit ball 19, allowing the limit ball 19 to slide inside the slot 20 and the fixed shaft 14, thereby achieving the unlocked state. At this time, the operator can quickly disassemble the straightening component. At the same time, the extrusion plate 17 will also compress the second spring 21, causing the second spring 21 to undergo elastic deformation and store elastic potential energy, providing elastic restoring force for subsequent installation. This drives the extrusion shaft 18 to reset and compress the limit ball 19, causing it to lock into the slot 20, thereby achieving quick locking.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire drawing device for producing fireproof cable copper core, comprising a wire drawing machine (1), characterized in that: A wire drawing machine (1) is fixedly connected to a wire feeding roller (2) on one side, a wire drawing box (3) is provided on one side of the wire drawing machine (1), and a straightening component is provided on the outer wall of the wire drawing machine (1); The straightening assembly includes a fixed plate (12), the bottom of which is fixedly connected to the outer wall of the wire drawing machine (1), a support plate (4) is slidably connected to the top of the fixed plate (12), a plurality of support blocks (6) are fixedly connected to the top of the support plate (4), a first extrusion wheel (5) is slidably connected inside each of the plurality of support blocks (6), a screw (7) is threadedly connected inside the support block (6), a rotating shaft (8) is slidably connected to one end of the screw (7), a first spring (9) is provided at the bottom of the rotating shaft (8), one end of the first spring (9) is fixedly connected to the bottom of the rotating shaft (8), and a slider (10) is fixedly connected to the other end, the outer wall of the slider (10) is slidably connected inside the support block (6), a second extrusion wheel (11) is slidably connected inside the slider (10), and a left-right symmetrical disassembly assembly is provided inside the fixed plate (12).

2. The wire drawing device for producing fireproof cable copper core according to claim 1, characterized in that: The two symmetrical disassembly components each include a connecting block (13) and a fixing shaft (14). The bottom of the connecting block (13) is fixedly connected to the top of the support plate (4), and the top of the fixing shaft (14) is fixedly connected to the lower surface of the connecting block (13).

3. The wire drawing device for producing fireproof cable copper core according to claim 2, characterized in that: The outer wall of the fixed shaft (14) is slidably connected to the inside of the fixed plate (12), and the inside of the fixed plate (12) is provided with a slot (20).

4. The wire drawing device for producing fireproof cable copper core according to claim 3, characterized in that: The connecting block (13) is internally connected to a transmission rod (15), and the top end of the transmission rod (15) is fixedly connected to a pull plate (16).

5. The fireproof cable copper core production wire drawing device according to claim 4, characterized in that: The bottom end of the transmission rod (15) is fixedly connected to the extrusion disc (17), and the bottom end of the extrusion disc (17) is fixedly connected to the extrusion shaft (18).

6. The wire drawing device for producing fireproof cable copper core according to claim 5, characterized in that: The fixed shaft (14) has multiple limiting balls (19) slidably connected inside, and the multiple limiting balls (19) all fit into the slot (20).

7. The fireproof cable copper core production wire drawing device according to claim 6, characterized in that: The outer wall of the extrusion shaft (18) is in contact with the limiting ball (19), and the outer wall of the transmission rod (15) is provided with a spring (21).

8. The wire drawing device for producing fireproof cable copper core according to claim 7, characterized in that: One end of the second spring (21) is fixedly connected to the inner wall of the connecting block (13), and the other end is fixedly connected to the side wall of the extrusion plate (17).

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