Extrusion traction device for medium voltage direct current cable production

Abstract

The utility model discloses an extrusion traction device for medium voltage DC cable production relates to cable production device technical field, including the bottom plate, and the left end both sides top wall of bottom plate all are fixed with first vertical board, and the clamping cavity of two first vertical boards is provided with the traction wheel, and the both ends axle body of traction wheel is rotatoryly installed in the board body of the first vertical board of both sides, and the right end both sides top wall of bottom plate all are fixed with second vertical board, and the adjacent side wall between two second vertical boards is rotatoryly installed with the reciprocating screw rod, and the top of reciprocating screw rod is provided with the guide rod, and the bottom wall of moving block is fixed with the pre -tight extrusion mechanism for realizing the stable traction of circuit. The utility model discloses through the clamping cavity of first extrusion wheel and second extrusion wheel that cable passes, under the action of pre -tight extrusion mechanism, make piston rod always keep the force of downward, make second extrusion wheel always abut tightly cable surface, and further make the contact of cable and first extrusion wheel and second extrusion wheel all can not produce the gap.

Description

Technical Field

[0001] This utility model relates to the technical field of cable production equipment, specifically an extrusion traction device for producing medium-voltage DC cables. Background Technology

[0002] The extrusion traction device in cable production is an indispensable piece of equipment in the cable manufacturing process. Its main responsibility is to pull and guide the cable during manufacturing, ensuring it moves along a predetermined path and speed to facilitate continuous and efficient production. The social context and technological development of this device are closely related to the technological advancements and market demands of the wire and cable industry.

[0003] Chinese Patent Publication No. CN223230160U discloses a cable production extrusion traction device, which includes a base plate, a traction box fixed to the upper surface of the base plate, a support frame fixed to the upper surface of the base plate, a cable roller detachably connected inside the support frame, a roller rotatably connected inside the traction box, a first gear fixed to the surface of the roller, a rotating plate rotatably connected to the back of the first gear, a second gear rotatably connected to the surface of the rotating plate, a third gear meshing with the surface of the second gear, the third gear rotatably connected to the rotating plate, a drive motor externally mounted on the back of the third gear, a connecting plate rotatably connected to the surface of the rotating plate, a second gear rotatably connected to the bottom of the connecting plate, an intermediate plate rotatably connected to the surface of the connecting plate, a connecting plate rotatably connected to the bottom of the intermediate plate, and a third gear rotatably connected to the bottom of the connecting plate. This utility model, through a gear mechanism, enables the traction device to adjust the gap between the rollers according to different cable diameters.

[0004] However, the extrusion traction device disclosed in the above patent still has certain shortcomings in practical applications. Although it uses a gear mechanism to adjust the gap between the rollers according to the diameter of different cable specifications, the adjustment accuracy of the gear mechanism is difficult to control, making it difficult for the rollers to make full contact with the cable. Gaps are easily generated between the two, making the cable easy to shake during the traction process and making it difficult to achieve stable traction. Utility Model Content

[0005] The purpose of this utility model is to provide an extrusion traction device for medium-voltage DC cable production, in order to solve the problem mentioned in the background art that the existing cable extrusion traction device uses a gear mechanism to adjust the gap, and its adjustment accuracy is difficult to control, making it difficult for the roller to make full contact with the cable, and gaps are easily generated between the two, making the cable easy to shake during the traction process and making it difficult to achieve stable traction.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an extrusion traction device for producing medium-voltage DC cables, comprising a base plate, with first vertical plates fixed to the top walls on both sides of the left end of the base plate, a traction wheel disposed in the clamping cavity of the two first vertical plates, the two ends of the traction wheel shafts respectively rotatably mounted in the plates of the two first vertical plates, and a motor connected to one end of the traction wheel shaft; second vertical plates fixed to the top walls on both sides of the right end of the base plate, a reciprocating screw rotatably mounted between the adjacent side walls of the two second vertical plates, a guide rod disposed at the top of the reciprocating screw, the two ends of the guide rod respectively fixed to the walls of the two second vertical plates, a moving block screwed to the surface of the reciprocating screw, the top end of the moving block slidably connected to the surface of the guide rod, pulleys fixed to one end of the traction wheel shaft and one end of the reciprocating screw, a belt connected between adjacent pulleys, and a pre-tightening extrusion mechanism fixed to the bottom wall of the moving block for achieving stable traction of the circuit.

[0007] Preferably, the pre-tightening extrusion mechanism includes a rectangular box, a fixed shaft, and a first extrusion wheel. The rectangular box is fixedly installed on the bottom wall of the movable block, and the two ends of the fixed shaft are respectively fixedly installed on the two side walls of the bottom inner cavity of the rectangular box. The first extrusion wheel is rotatably installed on the surface of the middle shaft of the fixed shaft.

[0008] Preferably, the pre-tightening extrusion mechanism further includes a through groove, a movable shaft, and a second extrusion wheel. The through groove is respectively opened on the top two side walls of the rectangular box. The two ends of the movable shaft respectively movably pass through the groove cavities of the through groove on both sides. The second extrusion wheel is rotatably mounted on the middle shaft of the movable shaft.

[0009] Preferably, the pre-tightening extrusion mechanism further includes a pre-tightening cylinder, a piston rod, and an arc-shaped block. The top end of the pre-tightening cylinder is fixed to the top wall of the inner cavity of the rectangular box. The piston rod is slidably connected to the cylinder body of the pre-tightening cylinder, and the piston rod extends through the bottom wall of the pre-tightening cylinder. The top wall of the arc-shaped block is fixedly connected to the bottom end of the piston rod, and the bottom wall of the arc-shaped block is fixedly connected to the surface of the movable shaft.

[0010] Preferably, the pre-tightening extrusion mechanism further includes a limiting plate and a spring. The limiting plate is fixedly installed at the top end of the piston rod, and the two ends of the spring are fixed between the top wall of the limiting plate and the top wall of the inner cavity of the pre-tightening cylinder.

[0011] Preferably, there are two pre-tightening cylinders arranged symmetrically.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention involves passing the cable through the cavity between the first and second extrusion wheels. Under the action of a spring, the piston rod maintains a constant downward force, ensuring the second extrusion wheel remains firmly against the cable surface. This eliminates gaps between the cable and both extrusion wheels. When adjusting the distance between the first and second extrusion wheels to accommodate cables of different specifications, simply move the movable shaft along the slot, causing the second extrusion wheel to rise and fall, thus adjusting the distance between it and the first extrusion wheel. The other end of the cable is wound around a traction wheel, which is driven by a motor to pull the cable. The pulley and belt cause the traction wheel to rotate, driving a reciprocating screw. A guide rod causes a moving block to move a rectangular box along the reciprocating screw, guiding the cable winding and ensuring it is evenly wound around the surface of the traction wheel, preventing tangled cable winding. Attached Figure Description

[0013] Figure 1 This is a first-view structural schematic diagram of an extrusion traction device for producing medium-voltage DC cables according to this utility model. Figure 2 This is a second-view structural schematic diagram of an extrusion traction device for producing medium-voltage DC cables according to this utility model; Figure 3 This is a third-view structural schematic diagram of an extrusion traction device for producing medium-voltage DC cables according to this utility model; Figure 4 This is a schematic diagram of the pre-tightening cylinder structure of an extrusion traction device for producing medium-voltage DC cables according to this utility model.

[0014] In the diagram: 1. Base plate; 2. First vertical plate; 3. Traction wheel; 4. Motor; 5. Second vertical plate; 6. Guide rod; 7. Reciprocating screw; 8. Moving block; 9. Rectangular box; 10. Pulley; 11. Belt; 12. Through groove; 13. Fixed shaft; 14. First extrusion wheel; 15. Movable shaft; 16. Second extrusion wheel; 17. Preload cylinder; 18. Piston rod; 19. Arc-shaped block; 20. Limiting plate; 21. Spring. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1 , Figure 2 , Figure 3, Figure 4 This utility model provides a technical solution: an extrusion traction device for medium-voltage DC cable production, comprising a base plate 1, two first vertical plates 2 respectively welded to the top walls of the left and front sides of the base plate 1, a traction wheel 3 disposed in the clamping cavity of the two first vertical plates 2, the front and rear shafts of the traction wheel 3 being rotatably mounted in the plates of the front and rear first vertical plates 2 via bearings, and a motor 4 connected to the front shaft of the traction wheel 3 via a coupling, two second vertical plates 5 respectively welded to the top walls of the right side of the base plate 1, and a reciprocating screw 7 being rotatably mounted between the adjacent side walls of the two second vertical plates 5 via bearings. The guide rod 6 is set on the top of the reciprocating screw 7. The front and rear ends of the guide rod 6 are welded to the walls of the two second vertical plates 5 respectively. The moving block 8 is screwed to the surface of the reciprocating screw 7. The top body of the moving block 8 is slidably connected to the surface of the guide rod 6. The two pulleys 10 are welded to the rear shaft of the traction wheel 3 and the rear rod of the reciprocating screw 7 respectively. The belt 11 is connected between the adjacent pulleys 10. Its purpose is to make the reciprocating screw 7 rotate together when the traction wheel 3 rotates. The pre-tightening extrusion mechanism is fixed to the bottom wall of the moving block 8 to achieve stable traction of the circuit.

[0017] The pre-tightening extrusion mechanism includes a rectangular box 9, a fixed shaft 13, and a first extrusion wheel 14. The rectangular box 9 is welded to the bottom wall of the movable block 8. The front and rear ends of the fixed shaft 13 are respectively welded to the front and rear side walls of the bottom inner cavity of the rectangular box 9. The first extrusion wheel 14 is rotatably mounted on the surface of the middle shaft of the fixed shaft 13 via bearings. The pre-tightening extrusion mechanism also includes a through groove 12, a movable shaft 15, and a second extrusion wheel 16. The through groove 12 is respectively opened on the front and rear side walls of the top box of the rectangular box 9. The front and rear ends of the movable shaft 15 movably pass through the cavities of the through groove 12 on both sides. The second extrusion wheel 16 is rotatably mounted on the middle shaft of the movable shaft 15 via bearings. The pre-tightening extrusion mechanism also includes a pre-tightening cylinder 1. 7. The piston rod 18, the arc-shaped block 19, and the top end of the pre-tightening cylinder 17 are welded to the top wall of the inner cavity of the rectangular box 9. The piston rod 18 is slidably connected in the cylinder of the pre-tightening cylinder 17, and the rod of the piston rod 18 moves through the bottom wall of the pre-tightening cylinder 17, that is, the piston rod 18 can move up and down. The top wall of the arc-shaped block 19 is welded to the bottom end of the piston rod 18, and the bottom wall of the arc-shaped block 19 is welded to the surface of the shaft of the movable shaft 15. The pre-tightening extrusion mechanism also includes a limiting plate 20 and a spring 21. The limiting plate 20 is welded to the top end of the rod of the piston rod 18, and the two ends of the spring 21 are welded between the top wall of the limiting plate 20 and the top wall of the inner cavity of the pre-tightening cylinder 17. There are two pre-tightening cylinders 17 symmetrically arranged.

[0018] Working principle: By passing the cable through the clamping cavity between the first extrusion wheel 14 and the second extrusion wheel 16, the piston rod 18 in the pre-tightening cylinder 17 maintains a downward force under the action of the spring 21, so that the second extrusion wheel 16 is always pressed against the surface of the cable. This ensures that there are no gaps in the contact between the cable and the first extrusion wheel 14 and the second extrusion wheel 16. When it is necessary to adjust the distance between the first extrusion wheel 14 and the second extrusion wheel 16 to accommodate cables of different specifications, simply move the movable shaft 15 along the through groove 12, which will drive the second extrusion wheel 16 to move up and down to adjust the distance between it and the first extrusion wheel 14. The other end of the cable is wound around the traction wheel 3. The traction wheel 3 is driven to rotate by the motor 4 to pull the cable. Under the action of the pulley 10 and the belt 11, the rotation of the traction wheel 3 drives the reciprocating screw 7 to rotate. Under the action of the guide rod 6, the moving block 8 drives the rectangular box 9 to move back and forth along the reciprocating screw 7, thereby providing guidance for the cable traction and winding, so that the cable is evenly wound on the surface of the traction wheel 3 and the cable is not tangled.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extrusion traction device for producing medium-voltage DC cables, comprising a base plate (1), characterized in that: The top walls on both sides of the left end of the base plate (1) are fixed with first vertical plates (2). Traction wheels (3) are provided in the clamping cavities of the two first vertical plates (2). The two ends of the shafts of the traction wheels (3) are respectively rotatably installed in the plates of the first vertical plates (2) on both sides. A motor (4) is connected to one end of the shaft of the traction wheel (3). The top walls on both sides of the right end of the base plate (1) are fixed with second vertical plates (5). A reciprocating screw (7) is rotatably installed between the adjacent side walls of the two second vertical plates (5). A guide rod (6) is provided at the top of the reciprocating screw (7). The two ends of the guide rod (6) are fixed to the walls of the two second vertical plates (5), and the reciprocating screw (7) is screwed with a moving block (8). The top of the moving block (8) is slidably connected to the surface of the guide rod (6). One end of the shaft of the traction wheel (3) and one end of the rod of the reciprocating screw (7) are both fixed with pulleys (10). A belt (11) is connected between adjacent pulleys (10). The bottom wall of the moving block (8) is fixed with a pre-tightening extrusion mechanism to achieve stable traction of the circuit.

2. The extrusion traction device for producing medium-voltage DC cables according to claim 1, characterized in that: The pre-tightening extrusion mechanism includes a rectangular box (9), a fixed shaft (13), and a first extrusion wheel (14). The rectangular box (9) is fixedly installed on the bottom wall of the moving block (8). The two ends of the fixed shaft (13) are respectively fixedly installed on the two sides of the bottom inner cavity of the rectangular box (9). The first extrusion wheel (14) is rotatably installed on the surface of the middle shaft of the fixed shaft (13).

3. The extrusion traction device for producing medium-voltage DC cables according to claim 2, characterized in that: The pre-tightening extrusion mechanism also includes a through groove (12), a movable shaft (15), and a second extrusion wheel (16). The through groove (12) is respectively opened on the top side walls of the rectangular box (9). The two ends of the movable shaft (15) respectively move through the groove cavity of the through groove (12) on both sides. The second extrusion wheel (16) is rotatably installed on the middle shaft of the movable shaft (15).

4. The extrusion traction device for producing medium-voltage DC cables according to claim 3, characterized in that: The pre-tightening extrusion mechanism also includes a pre-tightening cylinder (17), a piston rod (18), and an arc-shaped block (19). The top end of the pre-tightening cylinder (17) is fixed to the top wall of the inner cavity of the rectangular box (9). The piston rod (18) is slidably connected to the cylinder of the pre-tightening cylinder (17), and the rod of the piston rod (18) moves through the bottom wall of the pre-tightening cylinder (17). The top wall of the arc-shaped block (19) is fixedly connected to the bottom end of the piston rod (18), and the bottom wall of the arc-shaped block (19) is fixedly connected to the surface of the shaft of the movable shaft (15).

5. The extrusion traction device for producing medium-voltage DC cables according to claim 4, characterized in that: The pre-tightening extrusion mechanism also includes a limiting plate (20) and a spring (21). The limiting plate (20) is fixedly installed on the top part of the piston rod (18), and the two ends of the spring (21) are fixed between the top wall of the limiting plate (20) and the top wall of the inner cavity of the pre-tightening cylinder (17).

6. The extrusion traction device for producing medium-voltage DC cables according to claim 5, characterized in that: Two pre-tightening cylinders (17) are symmetrically arranged.

Images