A cable continuous drawing apparatus

Abstract

The present application relates to the technical field of drawing machinery, and discloses a cable continuous drawing equipment, which comprises a supporting base, one end of the supporting base is provided with a first extrusion assembly, and the other end of the supporting base is provided with a second extrusion assembly; the first extrusion assembly comprises a reversing wheel and a pressure plate, and a speed limiting top spring is arranged between the pressure plate and the supporting base; the second extrusion assembly comprises a trolley and a cover plate, the trolley is slidingly assembled on the supporting base along the length direction of the supporting base, the cover plate is rotationally assembled on the upper side of the trolley around a horizontal center line, a one-way wheel is further arranged on the trolley, a pressing block is arranged on the cover plate, a cable is arranged between the pressing block and the one-way wheel, the one-way wheel has an extrusion state of stopping rotating when extruding the cable and a rotating state of rotating when releasing the cable; a driving structure in transmission connection with the cover plate is further arranged on the supporting base, the driving structure is used for driving the cover plate to swing up and down, the cover plate swings upward to drive the trolley to move close to the first extrusion assembly, and the cover plate swings downward to drive the trolley to move away from the first extrusion assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of drawing machinery, in particular to a cable continuous drawing device. Background Art

[0002] Municipal construction projects often use new overhead intelligent cables. Because the cables are transported in a coiled form, direct pulling can easily damage them. Currently, cable pulling methods are divided into two main types: manual pulling and mechanical pulling. Manual pulling is time-consuming and labor-intensive, requiring a large amount of manpower and impractical for extended periods of time. Therefore, mechanical pulling is currently the primary method for cable pulling.

[0003] For example, the patent with authorization announcement number CN219402080U discloses a cable pulling device, including a connecting plate and a fixed component, the fixed component including a driving block, a pulling plate, a movable block, a movable rod and a fixed clamping ring, the driving block is used to drive the pulling plate to move, the pulling plate is located on the side of the driving block away from the connecting plate, the pulling plate has a connecting groove, the connecting groove is located on the side of the pulling plate close to the connecting plate, the movable block is used to move the movable rod, the movable rod is located on the side of the movable block close to the pulling plate and passes through the pulling plate, and the fixed clamping ring is fixedly installed on the end of the movable rod away from the movable block and is located in the connecting groove.

[0004] The aforementioned cable pulling equipment clamps the ends of cables of varying sizes using fixed clamps, allowing cables of all sizes to be straightened. However, in practice, the cables are transported in coils, which create a tendency for them to bend toward one side when they are unwound. While direct pulling can temporarily straighten the cables, the tensile stress on the reel during pulling further bends the cables. Once the pulling force is removed, the cables are prone to bending again, making on-site operation difficult. Summary of the Invention

[0005] The purpose of the present invention is to provide a cable continuous drawing device to solve the problem in the prior art that the cable is easily bent again after the drawing force is released.

[0006] In order to achieve the above-mentioned object, the present invention provides a cable continuous drawing device, comprising a support base, wherein a first extrusion assembly is provided at one end in the longitudinal direction of the support base, and a second extrusion assembly is provided at the other end;

[0007] The first extrusion assembly includes a reversing wheel and a pressure plate, the pressure plate and the reversing wheel are arranged coaxially, a speed-limiting top spring is provided between the pressure plate and the support base, the speed-limiting top spring is used to push the pressure plate in the direction of the reversing wheel, and a cable is arranged between the reversing wheel and the pressure plate;

[0008] The second extrusion assembly includes a pulley and a cover plate, the pulley is slidably mounted on the support base along the length direction of the support base, the cover plate is rotatably mounted on the upper side of the pulley around a horizontal center line, the pulley is further provided with a one-way wheel, the cover plate is provided with a pressure block for pressing downward, the pressure block and the one-way wheel are used to arrange cables, and the one-way wheel has an extrusion state in which it stops rotating when squeezing the cable and a rotation state in which it rotates when releasing the cable;

[0009] The support base is also provided with a driving structure that is transmission-connected to the cover plate, and the driving structure is used to drive the cover plate to swing up and down. When the cover plate swings upward, it drives the pulley to approach the first extrusion assembly, and when the cover plate swings downward, it drives the pulley away from the first extrusion assembly.

[0010] Preferably, the driving structure includes a driving motor, a turntable and a power rod, the driving motor is in transmission connection with the turntable, one end of the power rod is hinged to the turntable, and the other end is hinged to the cover plate.

[0011] Preferably, an elastic member is further provided on the cover plate, the top end of the elastic member is hinged to the power rod ball, and the bottom end of the elastic member is press-fitted to the cover plate.

[0012] Preferably, the elastic member includes a unloading spring and a boosting push rod, the cover plate is provided with a vertically extending assembly hole, the unloading spring is assembled in the assembly hole, and the top end of the boosting push rod is hinged to the power rod ball.

[0013] Preferably, it also includes a transmission frame, which is movably assembled on the upper side of the support base along the width direction of the support base, and the transmission frame includes a connecting section and a driving section connected to the connecting section, and the connecting section is transmission-connected to the pressure plate, and the driving section has a driving inclined surface, and the top end of the driving inclined surface is inclined toward the direction close to the cable, and a pressing rod is provided at the bottom of the cover plate, and the pressing rod presses the driving inclined surface when the cover plate swings downward.

[0014] Preferably, the push rod is assembled in the assembly hole, and the push rod has a center hole. A growth rod is axially movably assembled in the center hole, and the bottom end of the growth rod extends to the outside of the push rod. The bottom end of the booster push rod presses the growth rod.

[0015] Preferably, an anti-slip baffle is further provided on the support base, and the anti-slip baffle is spaced apart from the transmission frame, and the space between the anti-slip baffle and the transmission frame is used for arranging cables.

[0016] Preferably, the turntable is provided with a radially extending long hole, in which a transposition slider, a return spring and a transposition coil are installed, the return spring is pressed and installed between the transposition slider and the transposition coil, the transposition slider is located at one end of the long hole close to the center of the turntable, and the power rod is hinged to the transposition slider;

[0017] A start switch and a stop switch are also provided on the support base, the start switch faces the transmission frame, and the stop switch is flush with the center of the turntable. A switch contact is provided on the turntable, and the start switch and the stop switch are both connected to the transposition coil signal. The stop switch is located on the rotation path of the switch contact. When the transmission frame contacts the start switch, the start switch transmits a start signal to the transposition coil, and the transposition coil attracts the transposition slider away from the center of rotation. When the switch contact passes the stop switch, the stop switch transmits a stop signal to the transposition coil.

[0018] Preferably, a distance-adjusting bolt is threadedly mounted on the support base, and the start switch is fixedly arranged on the end of the distance-adjusting bolt.

[0019] Preferably, the cover plate is further threadedly assembled with a tightening bolt, and the pressure block is fixedly assembled on the bottom end of the tightening bolt.

[0020] The cable continuous drawing device according to the embodiment of the present invention has the following advantages compared with the prior art: the first extrusion assembly and the second extrusion assembly are located at both ends of the supporting base. When pulling the cable, the cable passes between the pressure plate and the reversing wheel of the first extrusion assembly and between the pressure block and the one-way wheel of the second extrusion assembly. Under the action of the speed limiting top spring, the pressure plate and the reversing wheel squeeze the cable. At the same time, the driving structure drives the cover plate to swing up and down, and the cover plate drives the pulley to move back and forth. When the cover plate swings upward, it drives the pulley to approach the first extrusion assembly, the pressure block moves away from the one-way wheel and releases the cable. The one-way wheel is in a rotating state. When the cover plate swings downward, it drives the pulley away from the first extrusion assembly, the pressure block squeezes the cable, and the one-way wheel stops and is in an extrusion state to pull the cable. At this time, the first extrusion assembly and the second extrusion assembly clamp the cable at the same time, and only the cable between the first extrusion assembly and the second extrusion assembly is pulled, reducing the forward degree of the cable wound on the roller, avoiding the phenomenon that the cable wound on the roller is aggravated by excessive tension and deformation, and avoiding the cable bending again after the pulling force is withdrawn. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front perspective structural diagram of the cable continuous drawing device of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the back three-dimensional structure of the cable continuous drawing device;

[0023] Figure 3 yes Figure 1 A schematic diagram of the back three-dimensional structure of the cable continuous drawing device from another perspective;

[0024] Figure 4 yes Figure 1 Schematic diagram of the overall top view structure of the cable continuous drawing equipment;

[0025] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the cable continuous drawing equipment at AA;

[0026] Figure 6 It is a schematic diagram of a cross-sectional three-dimensional structure of a turntable portion of a cable continuous drawing device of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the pulley of the cable continuous drawing equipment of the present invention;

[0028] Figure 8 This is a schematic cross-sectional structural diagram of the cover plate portion of the cable continuous drawing device of the present invention;

[0029] Figure 9 It is a schematic diagram of the three-dimensional structure of the transmission frame of the cable continuous drawing equipment of the present invention.

[0030] In the figure, 1. support base, 2. anti-slip baffle, 3. reversing wheel, 4. cable, 5. collecting roller, 6. speed limiting top spring, 7. pressure plate, 8. transmission frame, 9. driving motor, 10. power rod, 11. turntable, 110. switch contact, 12. starting switch, 120. distance adjusting bolt, 13. tightening bolt, 14. cover plate, 15. pulley, 16. ratchet assembly, 17. stop switch, 18. pressure block, 19. one-way wheel, 20. transposition slider, 21. reset top spring, 22. transposition coil, 23. booster push rod, 24. push rod, 240, growth rod, 25. unloading spring. DETAILED DESCRIPTION

[0031] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0032] A preferred embodiment of a cable continuous drawing device of the present invention is as follows Figures 1 to 9As shown, the cable continuous drawing equipment includes a support base 1, a first extrusion assembly, a second extrusion assembly, and a driving structure. The support base 1 is the supporting foundation of the cable continuous drawing equipment. The first extrusion assembly, the second extrusion assembly, and the driving structure are all arranged on the support base 1. The first extrusion assembly and the second extrusion assembly are used to extrude and draw the cable 4, and the driving structure is used to drive the second extrusion assembly to move on the support base 1.

[0033] The first extrusion assembly is arranged at one end of the support base 1 in the length direction, and the second extrusion assembly is arranged at the other end of the support base 1 in the length direction. When the first extrusion assembly and the second extrusion assembly squeeze and clamp the cable 4 at the same time, the second extrusion assembly can pull the cable 4 in the process of being driven away from the first extrusion assembly by the driving structure.

[0034] In this embodiment, a take-up roller 5 is rotatably mounted on the support base 1. The take-up roller 5 is arranged on the side of the first assembly away from the second assembly. The cable 4 is bent and wound around the take-up roller 5. When the cable 4 is pulled, the pulled cable 4 will detach from the take-up roller 5. Since only the cable 4 between the first and second extrusion assemblies is subjected to tension and pulled, the pulling strength of the cable 4 bent and wound around the take-up roller 5 is reduced, thereby preventing the cable 4 wound around the take-up roller 5 from being bent and deformed due to excessive tension.

[0035] The first extrusion assembly includes a reversing wheel 3, a pressure plate 7, and a speed-limiting spring 6. The pressure plate 7 is coaxially arranged with the reversing wheel 3. The reversing wheel 3 is rotatably mounted on the support base 1. The pressure plate 7 is movably mounted on the support base 1 along the axial direction of the reversing wheel 3. The speed-limiting spring is pressurized and mounted between the support base 1 and the pressure plate 7. The speed-limiting spring is used to push the pressure plate 7 toward the reversing wheel 3. The cable 4 is arranged between the reversing wheel 3 and the pressure plate 7. In this embodiment, an assembly shaft is fixedly mounted on the support base 1, the pressure plate 7 is sleeved on the assembly shaft, and the reversing wheel 3 is rotatably mounted on the assembly shaft.

[0036] The speed-limiting spring applies an elastic force to the pressure plate 7 toward the reversing wheel 3, causing the pressure plate 7 and the reversing wheel 3 to squeeze the cable 4. By adjusting the elastic force of the speed-limiting spring, the clamping force of the pressure plate 7 and the annular wheel on the cable 4 can be adjusted, thereby adjusting the speed at which the cable 4 is pulled. Since the cable 4 is currently being dragged and moved by the second extrusion assembly, the cable take-up roller is also subjected to a certain amount of tension, which exacerbates the bending of the cable 4 on the take-up roller 5. The reversing wheel 3 and the pressure plate 7 clamp the cable 4, thereby reducing the pull on the take-up roller 5 when the cable 4 is pulled during operation.

[0037] The cable-taking roller is located at one end of the support base 1. When the cable 4 on the cable-taking roller is output to the second extrusion assembly, it needs to pass through the first extrusion assembly first, and the cable 4 is reversed by the reversing wheel 3. It can be seen from the accompanying drawings that when the cable 4 on the taking-up roller 5 is output outward, since the taking-up roller 5 needs to be curled during transportation, the cable 4 also has bending stress. After passing through the reversing wheel 3, the cable 4 will first be reversely curled to relatively offset the bending stress generated by the cable 4 during transportation. After being bent by the reversing wheel 3, the cable 4 is clamped and stretched by the second pressure assembly again, which can reduce the phenomenon of the cable 4 bending and deforming again after being stretched.

[0038] The second extrusion assembly comprises a pulley 15 and a cover plate 14. The pulley 15 is mounted on the support base 1 for sliding along its length, and the cover plate 14 is mounted on the upper side of the pulley 15 for pivoting about its horizontal centerline. In this embodiment, the support base 1 is provided with a guide groove for the movement of the pulley 15. The guide groove extends along the length of the support base 1, allowing the pulley 15 to move back and forth only within the guide groove. This restricts the movement direction of the pulley 15 and ensures that the pulley 15 can reciprocate along the length of the support base 1.

[0039] The pulley 15 is also provided with a one-way wheel 19. In this embodiment, the one-way wheel 19 is movably mounted on the inner side of the pulley 15 and is located below the cable 4. A ratchet assembly 16 is provided at the end of the one-way wheel 19. The ratchet assembly 16 includes components such as a ratchet, a pawl, and a spring to ensure that the one-way wheel 19 can only rotate in one direction. The one-way wheel 19 stops rotating when squeezing the cable 4, at which time the one-way wheel 19 is in a squeezing state. The one-way wheel 19 can rotate when releasing the cable, at which time the one-way wheel 19 is in a rotating state, that is, when the second squeezing assembly moves away from the first squeezing assembly to pull the cable, the one-way wheel 19 is stationary to ensure that the cable 4 can be pulled.

[0040] The cover plate 14 is hingedly connected to the surface of the pulley 15. A pressure block 18 is mounted on the bottom of the cover plate 14. When the cover plate 14 rotates, the pressure block 18 is used to press downward. The cable 4 is arranged between the pressure block 18 and the one-way wheel 19. When the pressure block 18 presses downward, the pressure block 18 and the one-way wheel 19 clamp the cable 4. When the pulley 15 slides on the support base 1 and away from the first extrusion assembly, the pressure block 18 and the one-way wheel 19 can pull the clamped cable 4.

[0041] The driving structure is connected to the cover plate 14 in a transmission manner. The driving structure is used to drive the cover plate 14 to swing up and down. When the cover plate 14 swings upward, the pressure block 18 stops squeezing the cable 4, and the one-way wheel 19 is in a rotating state. At this time, the cover plate 14 drives the pulley 15 to approach the first extrusion assembly; when the cover plate 14 swings downward, the pressure block 18 squeezes the cable 4, and the one-way wheel 19 is in a stopped state. The cover plate 14 drives the pulley 15 away from the first extrusion assembly to pull the cable 4 clamped and fixed by the pressure block 18 and the one-way wheel 19.

[0042] The first extrusion assembly and the second extrusion assembly of the cable continuous drawing device are located at both ends of the support base 1. When the cable is drawn, the cable passes between the pressure plate 7 and the reversing wheel 3 of the first extrusion assembly, and between the pressure block 18 and the one-way wheel 19 of the second extrusion assembly. Under the action of the speed-limiting top spring 6, the pressure plate 7 and the reversing wheel 3 squeeze the cable 4. At the same time, the driving structure drives the cover plate 14 to swing up and down, and the cover plate 14 drives the pulley 15 to move back and forth. When the cover plate 14 swings upward, it drives the pulley 15 to approach the first extrusion assembly, and the pressure block 18 moves away from the one-way wheel 19 and releases the cable 4. The one-way wheel 19 is in a rotating state. When the cover plate 14 swings downward, it drives the pulley 15 away from the first extrusion assembly, and the pressure block 18 squeezes the cable 4. The one-way wheel 19 stops and is in an extrusion state, pulling the cable 4. At this time, the first extrusion assembly and the second extrusion assembly clamp the cable 4 at the same time, and only the cable 4 between the first extrusion assembly and the second extrusion assembly is pulled, reducing the pulling force of the cable 4 wound on the roller, avoiding the phenomenon of aggravated bending deformation of the cable 4 wound on the roller due to excessive tension, and avoiding the cable 4 from bending again after the pulling force is withdrawn.

[0043] Preferably, the driving structure includes a driving motor 9 , a turntable 11 and a power rod 10 . The driving motor 9 is transmission-connected to the turntable 11 . One end of the power rod 10 is hinged to the turntable 11 , and the other end is hinged to the cover plate 14 .

[0044] The drive structure is formed by a drive motor 9, a turntable 11, and a power rod 10. The drive motor 9 is fixedly arranged in the middle of the surface of the support base 1. The output shaft of the drive motor 9 is transmission-connected to the turntable 11. The side of the turntable 11 facing away from the drive motor 9 is hinged to one end of the power rod 10. The other end of the power rod 10 is hinged to the upper surface of the cover plate 14. When the turntable 11 rotates, it will synchronously pull the power rod 10 to move. The turntable 11, power rod 10, cover plate 14, and pulley 15 form a crank slider mechanism. The drive motor 9 drives the turntable 11 to rotate, and the turntable 11 synchronously drives the power rod 10 to move.

[0045] During use, when the power rod 10 passes the center of gravity height of the turntable 11, the power sense following the upward movement of the turntable 11 will open the cover 14. At the same time, the power rod 10 forces the pulley 15 to approach the direction of the drive motor 9 by pulling the cover. At this time, the opened cover 14 will make the pressure block 18 move away from the cable 4 and not contact the cable 4. The one-way wheel 19 is in a released state, and the pulley 15 will cause the one-way wheel 19 to rotate at the bottom of the cable 4.

[0046] After the turntable 11 rotates 180 degrees, the distance between the pulley 15 and the drive motor 9 is the shortest.

[0047] When the turntable 11 drives the power rod 10 downward, the power rod 10 presses the cover plate 14 downward, causing the pressure block 18 to press the cable 4 onto the one-way wheel 19. At the same time, the rotating turntable 11 pushes the power rod 10 to move the pulley 15 away from the drive motor 9. At this time, the pressure block 18 presses the cable 4 onto the one-way wheel 19 and causes the cable 4 to follow the movement of the pulley 15. The one-way wheel 19 cannot rotate due to the ratchet assembly 16. The pressure block 18 and the one-way wheel 19 press and drag the cable 4, achieving the goal of straightening the cable 4 on the cable roller and then continuously releasing it.

[0048] After the turntable 11 rotates 180 degrees again, the distance between the pulley 15 and the drive motor 9 is the longest at this time. After that, the above cycle is repeated again to achieve continuous outward output of the cable 4 on the collection roller 5 after being stretched.

[0049] Preferably, an elastic member is further provided on the cover plate 14 , the top end of the elastic member is ball-hinged with the power rod 10 , and the bottom end of the elastic member is press-fitted with the cover plate 14 .

[0050] Since the end of the power rod 10 is below the center line of the turntable 11, the end of the power rod 10 will move downward and then upward as the turntable 11 rotates, resulting in that when the power rod 10 presses the cover plate 14 downward, the force of the cover plate 14 pressing the pressing block 18 changes all the time, and it is impossible to ensure that the pressing block 18 presses the cable 4 on the one-way wheel 19 with a preset constant force.

[0051] In order to prevent such problems from occurring, the deflection angle of the power rod 10 on the cover plate 14 is limited to between 0° and 70°. When the cover plate 14 deflects downward, its extreme position is when the cover plate 14 is attached to the surface of the pulley 15. Since the top of the elastic member is ball-hinged with the power rod 10 and the bottom end is pressed against the cover plate 14, after one end of the power rod 10 is lower than the center line of the turntable 11, the cover plate 14 has been attached to the surface of the pulley 15. As one end of the power rod 10 follows the turntable 11 to descend again, the downward-deflected turntable 11 will continue to press the elastic member, and the elastic member will unload the vertical pressure on the power rod 10, thereby ensuring that the cover plate 14 is always attached to the pulley 15 without affecting the transmission between the power rod 10 and the turntable 11.

[0052] Preferably, the elastic member includes a unloading spring 25 and a boosting push rod 23 . A vertically extending assembly hole is provided on the cover plate 14 , the unloading spring 25 is assembled in the assembly hole, and the top end of the boosting push rod 23 is ball-hinged with the power rod 10 .

[0053] The assembly hole provides a location for the assembly of the unloading spring 25 and the boosting push rod 23. When the power rod 10 is rotated to 0°, the unloading spring 25 and the boosting push rod 23 can enter the assembly hole. In this embodiment, the top of the boosting push rod 23 is a sphere, which is spherically hinged to the power rod 10. The top of the unloading spring 25 is pressed against the boosting push rod 23, and the bottom is pressed into the assembly hole to absorb the vertical load of the power rod 10.

[0054] Preferably, it also includes a transmission frame 8, which is movably assembled on the upper side of the support base 1 along the width direction of the support base 1. The transmission frame 8 includes a connecting section and a driving section connected to the connecting section. The connecting section is transmission-connected to the pressure plate 7. The driving section has a driving inclined surface, and the top end of the driving inclined surface is inclined toward the direction close to the cable 4. A pressing rod 24 is provided at the bottom of the cover plate 14. When the cover plate 14 swings downward, the pressing rod 24 presses the driving inclined surface.

[0055] The driving section of the transmission frame 8 has a driving inclined surface. When the cover plate 14 swings downward, the pressing rod 24 presses the driving inclined surface. After the driving inclined surface is pressed, the transmission frame 8 tends to move toward the cable 4. The transmission frame 8 moves along the width direction of the support base 1, pushing the pressure plate 7 to squeeze the cable 4 to the reversing wheel 3, thereby controlling the clamping strength of the reversing wheel 3 and the pressure plate on the cable 4.

[0056] In this embodiment, the connecting section of the transmission frame 8 is mounted on the assembly shaft, and the connecting section is located on the side of the pressure plate 7 away from the reversing wheel 3. One end of the speed limiting top spring 6 is press-assembled with the connecting section, and the other end is press-assembled with the support base 1. The transmission frame 8 is pushed by the elastic force of the speed limiting top spring 6, forcing the pressure plate 7 to have a tendency to move toward the reversing wheel 3. At this time, the speed limiting spring only needs to be able to push the transmission frame 8 and the pressure plate 7 toward the direction of the wheel change.

[0057] In this embodiment, the push rod 24 is screwed into the cover plate 14 by a thread, and the limit distance of the cover plate 14 downward is to fit against the upper surface of the pulley 15. Therefore, the limit distance of the cover plate 14 downward is fixed. In this way, the length of the push rod 24 can be adjusted to adjust its extrusion force on the driving inclined surface and its relative position with the transmission frame 8, thereby realizing the adjustment of the moving distance of the transmission frame 8. At this time, the clamping force of the first extrusion assembly on the cable 4 is provided by the transmission frame 8, which can reduce the elastic force of the speed limiting spring.

[0058] In addition, in the present embodiment, there is a certain length difference between the inner surface of the pressure plate 7 and the inner side of the connecting section of the transmission frame 8, that is, the pressure plate 7 is closer to the cable 4 relative to the connecting section of the transmission frame 8, ensuring that when the transmission frame 8 is subjected to force, the cable 4 is clamped only by the pressure plate 7 and the reversing wheel 3, avoiding the cable 4 being clamped at multiple points and difficult to stretch.

[0059] Preferably, the pushing rod 24 is assembled in the assembly hole. The pushing rod 24 has a center hole, and a growth rod 240 is axially movably assembled in the center hole. The bottom end of the growth rod 240 extends to the outside of the pushing rod 24, and the bottom end of the boosting push rod 23 presses the growth rod 240.

[0060] In this embodiment, the bottom end of the unloading spring 25 is pressurized within the center hole of the push rod 24. As the downward deflection of the power rod 10 increases, the booster push rod 23 further pushes the extension rod 240 downward. This push of the extension rod 240 further increases the clamping force of the push rod 24 on the driving ramp. In this embodiment, rubber is interposed between the ends of the reversing wheel 3 and the pressure plate 7. This rubber increases contact friction and prevents excessive squeezing between the reversing wheel 3 and the pressure plate 7, which could result in cable 4 loss.

[0061] Preferably, an anti-slip baffle 2 is further provided on the support base 1 , and the anti-slip baffle 2 is spaced apart from the transmission frame 8 , and the space between the anti-slip baffle 2 and the transmission frame 8 is used for arranging the cables 4 .

[0062] The cable 4 is prevented from deflecting to either side by the transmission frame 8 and the anti-slip baffle 2, thereby ensuring the stability of the stretching. In this embodiment, the interface of the anti-slip baffle 2 is L-shaped, with the bottom of the anti-slip baffle 2 located below the cable 4. The anti-slip baffle 2 supports the cable 4, reducing the difficulty of the pulley 15 in resetting when the cable 4 is long due to downward force due to gravity. On the other hand, the anti-slip baffle 2 shields one side of the cable 4, preventing the cable 4 from deviating during stretching.

[0063] Preferably, a radially extending long hole is provided on the turntable 11, in which a transposition slider 20, a return spring 21 and a transposition coil 22 are installed. The return spring 21 is pressed and installed between the transposition slider 20 and the transposition coil 22. The transposition slider 20 is located at one end of the long hole close to the center of the turntable 11, and the power rod 10 is hinged to the transposition slider 20.

[0064] A start switch 12 and a stop switch 17 are also provided on the support base 1. The start switch 12 faces the transmission frame 8, and the stop switch 17 is flush with the center of the turntable 11. A switch contact 110 is provided on the turntable 11. The start switch 12 and the stop switch 17 are both connected to the transposition coil 22 signal. The stop switch 17 is located on the rotation path of the switch contact 110. When the transmission frame 8 contacts the start switch 12, the start switch 12 transmits a start signal to the transposition coil 22. The transposition coil 22 attracts the transposition slider 20 away from the center of rotation. When the switch contact 110 passes the stop switch 17, the stop switch 17 transmits a stop signal to the transposition coil 22.

[0065] After the current cable 4 is stretched, there is no detection performed to determine whether the cable 4 is bent.

[0066] In this embodiment, the transposition slider 20, the return spring, and the transposition coil 22 are all assembled in a long hole extending radially on the turntable 11, and the transposition slider 20 can reciprocate in the radial direction of the turntable 11. A return spring 21 is provided between the transposition slider 20 and the transposition coil 22. Due to the elastic force of the return spring 21, the transposition slider 20 is normally closest to the center line of the turntable 11. When the transposition coil 22 is energized, magnetism is generated, thereby attracting the transposition slider 20 to compress the return spring 21, thereby enabling the transposition slider 20 to move to a position away from the center line of the turntable 11. As for the electrical connection of the transposition coil 22, conventional means can be used to implement it. For example, a full circle of conductive rings can be provided on one side of the turntable 11, and a conductive column in contact with the conductive ring can be provided on the support base 1. I will not elaborate on this here.

[0067] Because the transposition slider 20 is hinged to the power rod 10, when the transposition coil 22 is normally de-energized, the end of the power rod 10 is located closest to the centerline of the turntable 11. The turntable 11 drives the power rod 10, causing the cover 14 to press downward. The transmission frame 8 is then compressed to squeeze the pressure plate 7. The pressure plate 7 and the reversing wheel 3 squeeze and clamp the cable 4. When the transposition slider 20 moves away from the centerline of the turntable 11 and toward the transposition coil 22, the power rod 10 moves to the outermost side of the turntable 11. The power rod 10 drives the pulley 15 away from the drive motor 9, allowing the cable 4 to be pulled.

[0068] In order to control when the transposition coil 22 is connected and disconnected, a start switch 12 is provided on the support base 1, facing the transmission frame 8. When the transmission frame 8 touches the start switch 12, the transposition coil 22 starts to work. A switch contact 110 is provided on the side of the turntable 11 away from the power rod 10, and a stop switch 17 is provided on the support base 1, which is located on the rotation path of the switch contact 110. When the switch contact 110 touches the stop switch 17, the transposition coil 22 stops working. As for the circuit layout, the technology in this field can choose to use contactors or single-chip microcomputers, etc., as long as it can be achieved that the transposition coil 22 starts to work continuously after the start switch 12 is activated, and the transposition coil 22 stops working after the stop switch 17 is activated.

[0069] Specifically, when in use, in the initial state, the speed limiting top spring 6 pushes the transmission frame 8 and the pressure plate 7. At this time, the pressure plate 7 and the reversing wheel 3 clamp the cable 4, thereby determining the diameter of the cable 4, and then the starting switch 12 is attached to the transmission frame 8.

[0070] Under normal circumstances, the end of the power rod 10 is located at the midline position closest to the turntable 11. When the turntable 11 drives the power rod 10 to press the cover 14 downward, the transmission frame 8 is pressed to squeeze the pressure plate 7. At this time, the transmission frame 8 is away from the starting switch 12, and then the stretching of the cable 4 is consistent with the previous text.

[0071] When the end of the power rod 10 is at the same height as the center line of the turntable 11, the switch contact 110 contacts the stop switch 17. After that, the end of the power rod 10 will cross the center line of the turntable 11 and the stop switch 17. At this time, the transmission frame 8 is no longer constrained by the top pressure rod 24. If at this time, the stretched cable 4 does not bend or deform, as the turntable 11 continues to rotate, it waits for the next clamping and stretching between the pressure block 18 and the one-way wheel 19.

[0072] If the stretched cable 4 is bent and deformed, one side of the cable 4 is blocked by the anti-slip baffle 2, and the bent cable 4 only pushes the transmission frame 8 to move, thereby pushing the transmission frame 8 toward the direction of the start switch 12 and triggering the start switch 12 to start working. The start switch 12 will force the transposition coil 22 to be energized and attract the transposition slider 20 to compress the reset top spring 21.

[0073] At this point, the distance between the end of the power rod 10 and the centerline of rotation is at its greatest. As the turntable 11 drives the power rod 10 downward, the downward deflection distance of the power rod 10 increases. The further downward pressure of the booster push rod 23 pushes the extension rod 240 outward, forcing the extrusion strength of the transmission frame 8 to increase. Under normal conditions, the clamping force between the pressure block 18 and the one-way wheel 19 is greater than the clamping force between the reversing wheel 3 and the pressure plate 7, causing the cable 4 released from the outside of the take-up roller 5 to be stretched. However, at this point, because the clamping force between the reversing wheel 3 and the pressure plate 7 increases while the clamping force between the pressure block 18 and the one-way wheel 19 remains unchanged, the clamping force between the reversing wheel 3 and the pressure plate 7 is greater than the clamping force of the pressure block 18 and the one-way wheel 19 on the cable 4. As the pulley 15 moves away from the drive motor 9, the reversing wheel 3 and the pressure plate 7 clamp the cable 4 to limit the movement of the cable 4, and the pressure block 18 and the guide wheel will slide relative to the cable 4, so that the collection roller 5 cannot release the cable 4, and the moving away pulley 15 slides and clamps the cable 4 through the pressure block 18 and the one-way wheel 19, performing secondary stretching on the cable 4, so that the bent cable 4 is straightened.

[0074] After that, the continuously rotating turntable 11 will drive the switch contact 110 to contact the stop switch 17, the transposition coil 22 stops working, and the power rod 10 approaches the center line of the turntable 11 again. After that, it is determined whether the cable 4 is stretched again or output again based on whether the start switch 12 is turned on. This cycle ensures that the cable 4 will not be stressed and bent after output.

[0075] Preferably, a distance-adjusting bolt 120 is threadedly assembled on the support base 1 , and the start switch 12 is fixedly arranged on the end of the distance-adjusting bolt 120 .

[0076] By adjusting the depth of the distance adjusting bolt 120 screwed into the support base 1, the position of the start switch 12 can be adjusted so that when cables 4 of different sizes are pulled, the start switch 12 is initially attached to the transmission frame 8.

[0077] Preferably, a tightening bolt 13 is threadedly mounted on the cover plate 14 , and the pressing block 18 is fixedly mounted on the bottom end of the tightening bolt 13 .

[0078] Since the limit position of the downward deflection of the cover plate 14 is fixed, the pressure block 18 is movably assembled at the bottom of the cover plate 14 by the tightening bolt 13. The height of the pressure block 18 can be adjusted by screwing the tightening bolt 13 into the depth, thereby adjusting the distance between the pressure block 18 and the one-way wheel 19, and then adjusting the clamping strength of the pressure block 18 and the one-way wheel 19 on the cable 4.

[0079] In summary, an embodiment of the present invention provides a cable continuous pulling device, wherein the first extrusion assembly and the second extrusion assembly are located at both ends of a supporting base. When pulling the cable, the cable passes between the pressure plate and the reversing wheel of the first extrusion assembly, and between the pressure block and the one-way wheel of the second extrusion assembly. Under the action of the speed limiting top spring, the pressure plate and the reversing wheel squeeze the cable. At the same time, the driving structure drives the cover plate to swing up and down, and the cover plate drives the pulley to move back and forth. When the cover plate swings upward, it drives the pulley close to the first extrusion assembly, the pressure block moves away from the one-way wheel and releases the cable. The one-way wheel is in a rotating state. When the cover plate swings downward, it drives the pulley away from the first extrusion assembly, the pressure block squeezes the cable, and the one-way wheel stops and is in an extrusion state to pull the cable. At this time, the first extrusion assembly and the second extrusion assembly clamp the cable at the same time, and only pulls the cable between the first extrusion assembly and the second extrusion assembly, reducing the forward degree of the cable wound on the roller, avoiding the phenomenon that the cable wound on the roller is aggravated by excessive tension and deformation, and avoiding the cable bending again after the pulling force is withdrawn.

[0080] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A cable continuous drawing device, characterized in that: It comprises a support base (1), wherein one end of the support base (1) in the longitudinal direction is provided with a first extrusion component, and the other end is provided with a second extrusion component; The first extrusion assembly comprises a reversing wheel (3) and a pressure plate (7), the pressure plate (7) and the reversing wheel (3) being coaxially arranged, a speed-limiting top spring (6) being provided between the pressure plate (7) and the support base (1), the speed-limiting top spring (6) being used to push the pressure plate (7) in the direction of the reversing wheel (3), and a cable (4) being arranged between the reversing wheel (3) and the pressure plate (7); The second extrusion assembly includes a pulley (15) and a cover plate (14), wherein the pulley (15) is slidably mounted on the support base (1) along the length direction of the support base (1), and the cover plate (14) is rotatably mounted on the upper side of the pulley (15) around a horizontal center line. The pulley (15) is further provided with a one-way wheel (19), and a ratchet group (16) is provided at the end of the one-way wheel (19). The cover plate (14) is provided with a pressing block (18) for pressing downward, and a cable (4) is arranged between the pressing block (18) and the one-way wheel (19). The one-way wheel (19) has an extrusion state in which the rotation stops when the cable (4) is extruded, and a rotation state in which the rotation rotates when the cable is released. The support base (1) is also provided with a driving structure that is transmission-connected to the cover plate (14), and the driving structure is used to drive the cover plate (14) to swing up and down, and when the cover plate (14) swings upward, it drives the pulley (15) to approach the first extrusion assembly, and when the cover plate (14) swings downward, it drives the pulley (15) away from the first extrusion assembly; The driving structure comprises a driving motor (9), a turntable (11) and a power rod (10), wherein the driving motor (9) is connected to the turntable (11) in a transmission manner, and one end of the power rod (10) is hinged to the turntable (11) and the other end is hinged to the cover plate (14).

2. The cable continuous drawing equipment according to claim 1, characterized in that: An elastic member is also provided on the cover plate (14), the top end of the elastic member is ball-hinged with the power rod (10), and the bottom end of the elastic member is press-assembled with the cover plate (14).

3. The cable continuous drawing equipment according to claim 2, characterized in that: The elastic member comprises an unloading spring (25) and a boosting push rod (23); a vertically extending assembly hole is provided on the cover plate (14); the unloading spring (25) is assembled in the assembly hole; and the top end of the boosting push rod (23) is spherically hinged to the power rod (10).

4. The cable continuous drawing equipment according to claim 3, characterized in that: The invention also includes a transmission frame (8), wherein the transmission frame (8) is movably assembled on the upper side of the support base (1) along the width direction of the support base (1), and the transmission frame (8) includes a connecting section and a driving section connected to the connecting section, wherein the connecting section is in transmission connection with the pressure plate (7), and the driving section has a driving inclined surface, the top end of which is inclined in a direction close to the cable (4), and a pressing rod (24) is provided at the bottom of the cover plate (14), and when the cover plate (14) swings downward, the pressing rod (24) presses the driving inclined surface.

5. The cable continuous drawing equipment according to claim 4, characterized in that: The push rod (24) is assembled in the assembly hole. The push rod (24) has a center hole. A growth rod (240) is axially movably assembled in the center hole. The bottom end of the growth rod (240) extends to the outside of the push rod (24). The bottom end of the boost push rod (23) presses the growth rod (240).

6. The cable continuous drawing equipment according to claim 5, characterized in that: An anti-slip baffle (2) is further provided on the support base (1), and the anti-slip baffle (2) is spaced apart from the transmission frame (8), and the space between the anti-slip baffle (2) and the transmission frame (8) is used for arranging cables (4).

7. The cable continuous drawing equipment according to claim 4, characterized in that: The turntable (11) is provided with a radially extending long hole, and a transposition slider (20), a reset top spring (21) and a transposition coil (22) are installed in the long hole. The reset top spring (21) is pressed and installed between the transposition slider (20) and the transposition coil (22). The transposition slider (20) is located at one end of the long hole close to the center of the turntable (11), and the power rod (10) is hinged to the transposition slider (20); The support base (1) is further provided with a start switch (12) and a stop switch (17), wherein the start switch (12) faces the transmission frame (8), and the stop switch (17) is flush with the center of the turntable (11). A switch contact (110) is provided on the turntable (11), and the start switch (12) and the stop switch (17) are both connected to the transposition coil (22) signal, and the stop switch (17) is located on the rotation path of the switch contact (110). When the transmission frame (8) contacts the start switch (12), the start switch (12) transmits a start signal to the transposition coil (22), and the transposition coil (22) adsorbs the transposition slider (20) away from the center of rotation. When the switch contact (110) passes the stop switch (17), the stop switch (17) transmits a stop signal to the transposition coil (22).

8. The cable continuous drawing equipment according to claim 7, characterized in that: The support base (1) is also threadedly mounted with a distance-adjusting bolt (120), and the start switch (12) is fixedly arranged at the end of the distance-adjusting bolt (120).

9. The cable continuous drawing equipment according to claim 1, characterized in that: The cover plate (14) is also threadedly mounted with a tightening bolt (13), and the pressing block (18) is fixedly mounted on the bottom end of the tightening bolt (13).

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