Density-adjustable cabling equipment and control method thereof

Abstract

The invention relates to the field of cable cabling, in particular to density-adjustable cabling equipment and a control method thereof.The cabling equipment comprises a feeding mechanism, a pre-deformation mechanism, a bundling mechanism and a control unit; the feeding mechanism comprises a first guide disc driven by a driving unit to rotate, a main unwinding wheel used for unwinding a main wire core and a plurality of auxiliary unwinding wheels used for unwinding stranded cables. The pre-deformation mechanism comprises a pre-deformation device, and the pre-deformation device is provided with a first diameter measuring unit and a second diameter measuring unit; the bundling mechanism comprises a box body and a pulling piece, the distance between the box body and the pre-deformation mechanism is adjustable, a cabling through hole for a main cable core to penetrate through is formed, and the control unit can calculate a target spiral angle of the stranded cable under the condition that the preset distance is met, and further calculates the rotating speed of the first driving unit and the pulling speed of the pulling piece; according to the invention, the cabling process can be accurately controlled, the cable coating density can be flexibly adjusted, the cabling quality can be guaranteed, and the production reliability can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cable cabling, in particular to a density-adjustable cabling device and a control method thereof. BACKGROUND

[0002] In modern industrial production, the cabling process is crucial for the manufacture of various types of cables. In particular, in the field of heavy equipment, such as general-purpose cranes and offshore cranes, the steel wire rope used as the core load-bearing component directly affects the safe operation and service life of the entire equipment. In the cabling process, multiple twisted cables are uniformly twisted around the outer surface of the main core. When the helix angle of the twisted cable is smaller, the spacing between adjacent twisted cables is larger, and the formed steel cable is flexible but loose in structure. When the helix angle of the twisted cable is larger, the spacing between adjacent twisted cables is smaller, and the formed steel cable is more stable in structure and has higher torsional resistance. In traditional cabling processes, in order to achieve uniform twisting of multiple twisted cables around the outer surface of the main core, common methods include guiding the direction of the twisted cable using a simple guide device and controlling the winding speed of the cable by a fixed transmission mechanism. Some cabling devices are provided with simple twisting devices, but lack accurate measurement of the diameters of the twisted cable and the main core. Due to the lack of accurate measurement of the diameters of the twisted cable and the main core and the corresponding calculation and control mechanism, these methods are difficult to flexibly adjust the wrapping density of the twisted cable on the main core. SUMMARY

[0003] The present application aims to overcome the above technical problems and provides a density-adjustable cabling device.

[0004] A density-adjustable cabling device comprises: A feeding mechanism comprising a first guide disc rotated by a driving unit, a main unwinding wheel for unwinding a main core, and a plurality of secondary unwinding wheels for unwinding twisted cables, the main unwinding wheel and the secondary unwinding wheels are located on the same side of the first guide disc, and the plurality of secondary unwinding wheels are arranged in a circular array with the first guide disc axis as the center. The pre-deformation mechanism is located on the side of the guide disc away from the main unwinding wheel, and comprises a pre-deformer for pre-deforming the stranded cable, the first guide disc drives the pre-deformer to rotate, the pre-deformer is provided with a first diameter measuring unit for measuring the diameter of the stranded cable and a second diameter measuring unit for measuring the diameter of the main core, and a convergence mechanism comprising a box located at the outlet end of the pre-deformation mechanism and a pulling member for pulling the main core, the box is adjustable in distance with the pre-deformer, and is provided with a cabling perforation through which the main core passes, the stranded cable passes through the pre-deformer after passing through the first guide disc, converges towards the cabling perforation, and the main core moves along the axis of the first guide disc towards the direction where the pulling member is located, and a control unit for receiving a preset interval between adjacent stranded cables, the control unit is in communication connection with the first diameter measuring unit, the second diameter measuring unit, the first driving unit and the pulling member, and is used to calculate a target spiral angle of the stranded cable when the adjacent stranded cables are at the preset interval, and determine a pulling rate of the pulling member according to the target spiral angle and a preset rotating speed of the driving unit, the control unit adjusts the pulling rate of the pulling member to the target pulling rate to adjust the spiral angle of the stranded cable to the target spiral angle.

[0005] By adopting the above scheme, the control unit calculates the target spiral angle of the stranded cable under the condition that the stranded cables meet the preset interval between the stranded cables by receiving the measurement data of the first diameter measuring unit and the second diameter measuring unit, and combining the received target preset interval, and then controls the rotating speed of the driving unit and the pulling rate of the pulling member to the main core, so that the spiral angle of the stranded cable during wrapping is the target spiral angle, thereby being able to flexibly adjust the wrapping density of the stranded cable to the main core.

[0006] In one of the embodiments, the pre-deformer comprises a second guide disc, a center rod passing through the center of the second guide disc and provided with threads on the outer periphery, and a guide assembly provided on the outer periphery of the center rod, the guide assembly comprises a large guide ring, a middle guide ring and a small guide ring with radii decreasing in turn, the outer periphery of the center rod is further provided with a threaded sleeve and a rotating sleeve located on the side of the threaded sleeve away from the second guide disc, the large guide ring is matched with the threaded sleeve, the middle guide ring is matched with the rotating sleeve, and the small guide ring is matched with the threads of the center rod, and the outer periphery of each of the large guide ring, the middle guide ring and the small guide ring is provided with a plurality of guide wheels in circumferential array for guiding the winding of the stranded cable.

[0007] By adopting the above scheme, the large guide ring, the middle guide ring and the small guide ring jointly form a conical structure, the stranded cable is inclined to the axial direction of the center rod after passing through the plurality of guide rollers, thereby deforming to realize the pre-deformation function, meanwhile, the distance between the large guide ring and the middle guide ring can be changed by thread adjustment, the conicity of the large guide ring, the middle guide ring and the small guide ring forming the conical structure is changed, thereby the pre-deformation angle of the stranded cable can be adjusted.

[0008] In one of the embodiments, the first diameter measuring unit is located on the second guide disc, the first diameter measuring unit comprises a pre-tightening sleeve, the pre-tightening sleeve is provided with a pressing block penetrating the pre-tightening sleeve and being movable in the direction perpendicular to the axial center of the pre-tightening sleeve, the pressing block is provided with an upper friction roller, the bottom of the pre-tightening sleeve is provided with a lower friction roller, and the two sides of the pre-tightening sleeve are provided with guide rollers, the axial centers of the upper friction roller and the lower friction roller form an acute angle less than 90° with the generatrix of the pre-tightening sleeve.

[0009] By adopting the above scheme, since in the existing cabling equipment, the pre-tightening force of the stranded cable is provided by the secondary unwinding roller, however, the distance between the secondary unwinding roller and the cabling perforation is far, in the unwinding process of the secondary unwinding roller, the stranded cable between the cabling perforation and the secondary unwinding roller will be subjected to the centrifugal force and the friction force of the first guide disc and the second guide disc at the same time, thereby the tension of the stranded cable at the cabling perforation deviates, meanwhile, if the secondary unwinding roller fails or is powered off, the whole stranded cable will lose the tension, by the arrangement of the upper friction roller and the lower friction roller, the friction force received by the stranded cable during movement can be used as the tension, and the size of the friction force is adjustable.

[0010] In one of the embodiments, the first diameter measuring unit further comprises a first electric push rod with a built-in pressure sensor, the first electric push rod can push the pre-tightening sleeve to move along the length direction thereof, the side of the pressing block away from the upper friction roller is provided with a second electric push rod for pushing the pressing block to move to the inside of the pre-tightening sleeve, and the control unit can receive the signal of the pressure sensor and control the extension and retraction of the first electric push rod and the second electric push rod.

[0011] By adopting the above scheme, before the cabling equipment works, the staff can measure the minimum friction force required for pulling the steel cable and the friction force required for pre-tensioning through the pressure sensor, meanwhile, the control unit calculates the diameter of the stranded cable by sensing the moving distance of the second electric push rod, when the stranded cable moves, the control unit controls the second electric push rod to move, so that the friction force brought by the upper friction roller and the lower friction roller to the stranded cable is the preset pre-tightening force of the stranded cable, when the pressure sensor is abnormal, it indicates that the stranded cable is loose, the control unit controls the second electric push rod to increase the friction force received by the stranded cable, the first electric push rod moves to pull the stranded cable, thereby ensuring that the stranded cable is in a tight state.

[0012] In one of the embodiments, the first guide disc and the rod body are provided with a rotating shaft, the rotating shaft is provided with an oil storage cavity for storing lubricating oil, the central rod is provided with a transfer cavity in communication with the oil storage cavity, the second guide disc is provided with a seepage cavity in communication with the transfer cavity, the seepage cavity comprises a blocking part and a seepage part, the seepage part is in communication with the lower part of the friction roller at the bottom of the pre-tightening sleeve, the seepage part is provided with a plug, the side of the plug away from the blocking part is provided with an elastic element connected with the inner wall surface of the seepage part, a blocking plate is arranged between the blocking part and the seepage part, the blocking plate is provided with a blocking hole matched with the plug, when the second guide disc is static, the elastic element pushes the plug to block the blocking hole, when the second guide disc rotates, the plug extrudes the elastic element, and the plug leaves the blocking hole.

[0013] By adopting the above scheme, in the process of rotation of the rotating shaft, the lubricating oil in the oil storage cavity seeps to the lower friction roller through the transfer cavity and the seepage cavity under the action of centrifugal force, and the lower friction roller applies the lubricating oil to the surface of the stranded cable in the process of rotation, so as to prevent the stranded cable from being abraded, reduce the friction force suffered by the stranded cable when passing through the guide roller, and reduce the measurement error of the pressure sensor to the tension force of the stranded cable.

[0014] In one of the embodiments, the second diameter measuring unit is located in the threaded sleeve, the second diameter measuring unit comprises two symmetrically arranged clamping blocks and two third electric push rods controlled to stretch and retract by the control unit, a pressure sensor is arranged in each third electric push rod, one end of each third electric push rod is in abutment with the inner wall surface of the threaded sleeve, and the other end is in abutment with the clamping block, the third electric push rod pushes the clamping block to move along the axis direction perpendicular to the wire passing hole, the clamping block can pass through the inner wall surface of the wire passing hole, the opposite surfaces of the two clamping blocks are provided with wetting cotton, and the clamping block is provided with a hose with two ends in communication with the wetting cotton and the transfer cavity.

[0015] By adopting the above scheme, the third electric push rod pushes the two clamping blocks to move, the two clamping blocks are in abutment with the main wire core, the control unit measures the diameter of the main wire core by sensing the moving distance of the two clamping blocks, meanwhile, the lubricating oil in the transfer cavity can be transported to the wetting cotton through the hose, and the wetting cotton applies the lubricating oil to the surface of the core wire, so that the friction force between the stranded cables can be further reduced when the stranded cable covers the main wire core.

[0016] In one of the embodiments, the second guide disc comprises a mounting disc and a plurality of plug-in plates, the first diameter measuring unit and the seepage part are located on the plug-in plates, the sealing part and the sealing block are located in the mounting disc, the sealing part extends away from the axis of the mounting disc and the extending end forms a plug-in hole for the plug-in of the plug-in plates, the plug-in plates are provided with a top rod, the elastic member is located at one end of the sealing block away from the top rod, and the top rod pushes the sealing block away from the sealing hole when the plug-in plates are inserted into the plug-in hole.

[0017] By adopting the above scheme, through the setting of the plug-in plates and the mounting disc, the second guide disc can adapt to different numbers of stranded cables, users can plug in different numbers of plug-in plates according to their own needs, at the same time, the second guide disc is set to be plug-in type, so that the first diameter measuring unit can be disassembled and maintained, and the weight of the second guide disc can be reduced.

[0018] The application further provides a control method of a cabling device, which is used for controlling the cabling device, and comprises the following steps: S1. inputting a preset interval between adjacent stranded cables to the control unit; S2. measuring the diameter of a single stranded cable by the first diameter measuring unit and measuring the diameter of the main wire core by the second diameter measuring unit; S3. calculating a target spiral angle required to meet the preset interval between the stranded cables according to the preset interval between the stranded cables and the data detected by the first diameter measuring unit and the second diameter measuring unit; S4. determining a target pulling rate of the pulling member according to the target spiral angle and the preset rotating speed of the driving unit, and adjusting the pulling rate of the pulling member to the target pulling rate by the control unit.

[0019] By adopting the above scheme, the control method can enable the control unit to control the wrapping density of the stranded cables on the main wire core according to the inputted preset interval and the preset rotating speed of the driving unit.

[0020] In one of the embodiments, the control unit calculates a formula of a theoretical target spiral angle required to meet the preset interval between the stranded cables according to the preset interval between the stranded cables and the data detected by the first diameter measuring unit and the second diameter measuring unit, and the formula is as follows: wherein D is the diameter of the main wire core, d is the diameter of a single stranded cable, n is the number of the stranded cables, a is the target spiral angle of the stranded cables, g is the preset interval between adjacent stranded cables. target target

[0021] ​​By adopting the above scheme, the target spiral angle of the stranded cable can be calculated according to the preset interval of the stranded cable input by the user.

[0022] In one of the embodiments, according to the target spiral angle and the preset rotating speed of the driving unit, the formula for determining the target pulling speed of the pulling member is: Wherein ω is the preset rotating speed of the driving unit, and v is the speed at which the pulling member pulls the main core to move.

[0023] By adopting the above scheme, the user can determine the target pulling speed of the pulling member through the preset rotating speed of the driving unit.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The control unit calculates the target spiral angle of the stranded cable under the condition that the stranded cable meets the preset interval between the stranded cables by receiving the measurement data of the first and second diameter measurement units and combining the received preset interval, and then controls the rotating speed of the driving unit and the pulling speed of the pulling member on the main core, so that the spiral angle of the stranded cable during the covering is the target spiral angle, thereby being able to flexibly adjust the covering density of the stranded cable on the main core.

[0025] 2. By the setting of the upper and lower friction rollers, the friction force received by the stranded cable during movement can be used as the tensioning force, and the size of the friction force can be adjusted; before the operation of the cable forming equipment, the worker can measure the minimum friction force required for pulling the steel cable and the friction force required for pre-tensioning through the pressure sensor, and at the same time, the control unit measures the diameter of the stranded cable by sensing the movement distance of the second electric push rod, and when the stranded cable moves, the control unit controls the movement of the second electric push rod, so that the friction force brought by the upper and lower friction rollers to the stranded cable is the preset pre-tensioning force of the stranded cable; when the pressure sensor is abnormal, it indicates that the stranded cable is loose, and the control unit controls the second electric push rod to increase the friction force received by the stranded cable, and the first electric push rod moves to pull the stranded cable, thereby ensuring that the stranded cable is in a tight state.

[0026] 3. In the process of rotating the rotating shaft, the lubricating oil in the oil storage cavity is infiltrated to the lower friction roller through the transfer cavity and the infiltration cavity under the action of centrifugal force, and the lower friction roller spreads the lubricating oil to the surface of the stranded cable in the process of rotation, thereby preventing the stranded cable from being abraded, reducing the friction force received by the stranded cable when passing through the guide roller, and reducing the measurement error of the tension force of the stranded cable by the pressure sensor; the third electric push rod pushes the two clamping blocks to move, and the two clamping blocks abut with the main wire core respectively, and the control unit measures the diameter of the main wire core by sensing the moving distance of the two clamping blocks, and at the same time, the lubricating oil in the transfer cavity can be transported to the impregnated cotton through the hose, and the impregnated cotton spreads the lubricating oil to the surface of the main wire core, and the lubricating oil on the surface of the main wire core can further reduce the friction between the stranded cables when the stranded cable covers the main wire core. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a density-adjustable cabling equipment provided by the first embodiment of the present application; Figure 2 is a sectional view of the density-adjustable cabling equipment provided by the first embodiment of the present application; Figure 3 is a structural schematic diagram of a pre-deformer; Figure 4 is an enlarged view of the B area of Figure 2 Figure 5 is an enlarged view of the A area of Figure 2 Figure 6 is a structural schematic diagram of a second diameter measuring unit of the first embodiment of the present application; Figure 7 is a sectional view of a pre-deformation mechanism of the second embodiment of the present application; Figure 8 is an enlarged view of the C area of Figure 7 Figure 9 is a sectional view of a second guide disc of the second embodiment of the present application; Figure 10 is an enlarged view of the F area of Figure 9 Figure 11 is an enlarged view of the E area of Figure 7 Figure 12 is an enlarged view of the D area of Figure 7 Figure 13 is a sectional view of a second guide disc of the third embodiment of the present application; Figure 14 is a sectional view of a mounting disc of the third embodiment of the present application; Figure 15 ​​​​​​is a cross-sectional view of the plugboard of the third embodiment of the present application; Figure 16 is a schematic diagram of the twisted cable in a twisted state according to the present application; Reference signs: 1, feeding mechanism; 11, driving unit; 12, first guide disc; 13, main unwinding wheel; 14, auxiliary unwinding wheel; 2, pre-deformation mechanism; 21, pre-deformer; 211, second guide disc; 2111, seepage cavity; 2112, blocking part; 2113, seepage part; 2114, blocking block; 2115, elastic member; 2116, mounting disc; 2117, plugboard; 2118, blocking plate; 2119, ejector rod; 212, central rod; 2121, wire passing hole; 2122, transfer cavity; 213, guide assembly; 2131, large guide ring; 2132, middle guide ring; 2133, small guide ring; 2134, mounting hole; 214, threaded sleeve; 2141, accommodating groove; 215, rotating sleeve; 216, guide wheel; 2161, wheel body; 2162, adjusting rod; 2163, mounting part; 2164, adjusting part; 22, first diameter measuring unit; 221, pre-tightening sleeve; 2211, lower friction roller; 2212, guide wheel; 222, pressing block; 2221, upper friction roller; 223, first electric push rod; 224, second electric push rod; 23, second diameter measuring unit; 231, clamping block; 2311, impregnated cotton; 2312, hose; 232, third electric push rod; 3, bundling mechanism; 31, box body; 311, cabling hole; 32, pulling member; 4, control unit; 5, rotating shaft; 51, oil storage cavity; 52, blocking ring; 53, spring; 6, twisted cable; 7, main core. DETAILED DESCRIPTION

[0028] Therefore, it is necessary to provide a cabling device capable of flexibly controlling the wrapping density of the twisted cable 6.

[0029] Embodiment 1 Please refer to Figures 1-2 , Figure 1 is a structural schematic diagram of a density-adjustable cabling device provided by the first embodiment of the present application. The density-adjustable cabling device provided by the embodiment of the present application comprises a feeding mechanism 1, a pre-deformation mechanism 2, a bundling mechanism 3, and a control unit 4. The feeding mechanism 1, the pre-deformation mechanism 2, and the bundling mechanism 3 cooperate with each other to flexibly adjust the wrapping density of the twisted cable 6, thereby improving the cabling quality. This is because the feeding mechanism 1 provides the cable, the pre-deformation mechanism 2 performs pre-deformation processing on the twisted cable 6, the bundling mechanism 4 bundles the main core 7 and the twisted cable 6, and the control unit 4 can accept the preset spacing between the twisted cables 6 set by the staff and make the wrapping effect of the twisted cable 6 on the main core 7 meet the preset spacing. The four work together to ensure the accuracy and stability of the cabling process.

[0030] The feeding mechanism 1 comprises a first guide disc 12 driven to rotate by a driving unit 11, a main unwinding wheel 13 for unwinding the main core 7, and a plurality of auxiliary unwinding wheels 14 for unwinding the twisted cable 6. The first guide disc 12 can be a disc structure made of metal material, and a shaft hole is arranged at the center position of the first guide disc 12 and connected with the output shaft of the driving unit 11 by key connection or other means. The driving unit 11 can be a power device such as a motor. The main unwinding wheel 13 and the auxiliary unwinding wheel 14 can be roller structures made of plastic or metal material. The main unwinding wheel 13 and the auxiliary unwinding wheel 14 are arranged on the same side of the first guide disc 12, and the plurality of auxiliary unwinding wheels 14 are arranged in a circumferential array with the center of the first guide disc 12 as the center. The circumferential array arrangement of the auxiliary unwinding wheels 14 can ensure that the twisted cable 6 is uniformly gathered to the center, facilitating subsequent twisting operation.

[0031] Please refer to Figures 3-4 , Figure 3 is a structural schematic view of the pre-deformation device. The pre-deformation mechanism 2 is arranged on the side of the first guide disc 12 away from the main unwinding wheel 13, and the pre-deformation mechanism 2 comprises a pre-deformation device 21 for pre-deformation of the twisted cable 6. The first guide disc 12 drives the pre-deformation device 21 to rotate through the rotating shaft 5. The pre-deformation device 21 is provided with a first diameter measuring unit 22 for measuring the diameter of the twisted cable 6 and a second diameter measuring unit 23 for measuring the diameter of the main core 7. The pre-deformation device 21 comprises a second guide disc 211, a center rod 212 provided with threads on the outer circumferential surface and penetrating the center of the second guide disc 211, and a guide assembly 213 arranged on the outer circumferential surface of the center rod 212. The second guide disc 211 is provided with a wire passing hole for the twisted cable 6 to pass through. The second guide disc 211 can be a disc structure made of aluminum alloy, and a through hole is arranged at the center of the second guide disc 211 for the center rod 212 to pass through. The center rod 212 can be a screw structure made of stainless steel, and the threads on the outer circumferential surface of the center rod 212 are used to cooperate with the small guide ring 2133. The center rod 212 is provided with a wire passing hole 2121 for the main core to pass through along the axial direction of the center rod 212.

[0032] The guide assembly 213 comprises a large guide ring 2131, a middle guide ring 2132, and a small guide ring 2133 with radii decreasing in sequence. The outer circumferential surface of the center rod 212 is further provided with a threaded sleeve 214 and a rotating sleeve 215 arranged on the side of the threaded sleeve 214 away from the second guide disc 211. The large guide ring 2131 cooperates with the threaded sleeve 214, the middle guide ring 2132 cooperates with the rotating sleeve 215, and the middle guide ring 2132 can rotate along the outer circumferential surface of the rotating sleeve 215 and can also be fixed at a screw angle by bolts. The small guide ring 2133 cooperates with the threads of the center rod 212. The outer circumferential surfaces of the large guide ring 2131, the middle guide ring 2132, and the small guide ring 2133 are provided with a plurality of guide wheels 216 in a circumferential array for guiding the winding of the twisted cable 6.

[0033] The guide wheel 216 comprises a wheel body 2161 and an adjusting rod 2162, the adjusting rod 2162 comprises a mounting portion 2163 and an adjusting portion 2164, the angle between the mounting portion 2163 and the adjusting portion 2164 is adjustable, the wheel body 2161 is sleeved on the adjusting portion 2164, the outer circumferential surface of the large guide ring 2131, the medium guide ring 2132 and the small guide ring 2133 is provided with a plurality of mounting holes 2134 matched with the adjusting portion 2164, the mounting hole 2134 is a polygonal hole, and the adjusting portion 2164 can be fixed at any depth of the mounting hole 2134. The wheel body 2161 can be a rubber roller to increase the friction force on the stranded cable 6, the adjusting rod 2162 can be a metal rod, a bolt is arranged between the mounting portion 2163 and the adjusting portion 2164, the tightness of the mounting portion 2163 and the adjusting portion 2164 is adjusted through the cooperation of the bolt and a nut, so that the angle between the mounting portion 2163 and the adjusting portion 2164 is adjusted. The cross section of the mounting portion 2163 is rectangular or other polygonal shape, the side surface of the large guide ring 2131, the medium guide ring 2132 and the small guide ring 2133 is provided with a fastening bolt penetrating the inner wall surface of the mounting hole 2134, and the fastening bolt is screwed to change the tightness of the mounting portion 2163 in the mounting hole 2134, so that the adjusting portion 2164 is fixed at any depth of the mounting hole 2134.

[0034] Please refer to Figure 5 , Figure 5 is Figure 2 the enlarged view of the A area, the first diameter measuring unit 22 is located at the wire passing hole of the second guide disc 211, the first diameter measuring unit 22 comprises a pre-tightening sleeve 221, the upper portion of the pre-tightening sleeve 221 is provided with a pressing block 222 penetrating the pre-tightening sleeve 221 and capable of moving in the direction perpendicular to the axis of the pre-tightening sleeve 221, the pressing block 222 is provided with an upper friction roller 2221, the bottom of the pre-tightening sleeve 221 is provided with a lower friction roller 2211, and the two sides of the pre-tightening sleeve 221 are provided with guide wheels 2212. The axis of the upper friction roller 2221 and the lower friction roller 2211 is at an acute angle less than 90° with the generatrix of the pre-tightening sleeve 221, so as to ensure that the upper friction roller 2221 and the lower friction roller 2211 can rotate while providing friction force for the stranded cable 6. In the present application, the pre-tightening sleeve 221 is rectangular, so as to facilitate the extrusion and measurement of the stranded cable 6 by the upper friction roller 2221 and the lower friction roller 2211. The pre-tightening sleeve 221 can be a metal sleeve, and the pressing block 222 can be a metal block. The upper friction roller 2221 and the lower friction roller 2211 can be rubber rollers, and the guide wheels 2212 can be metal wheels or plastic wheels.

[0035] The upper part of the pre-tightening sleeve 221 is provided with a control cavity, the first diameter measuring unit 22 further comprises a first electric push rod 223 provided with a pressure sensor, the first electric push rod 223 is located in the control cavity and is parallel to the axis of the second guide disc 211, one end of the first electric push rod 223 abuts against the side wall of the control cavity, and the other end abuts against the pre-tightening sleeve 221, so as to ensure that the first electric push rod 223 can drive the pre-tightening sleeve 221 to move along the length direction of the pre-tightening sleeve 221, the side of the pressing block 222 away from the upper friction wheel is provided with a second electric push rod 224, one end of the second electric push rod 224 abuts against the top surface of the control cavity, and the other end abuts against the pressing block 222, the control unit 4 can receive the signal of the pressure sensor and control the extension and retraction of the first electric push rod 223 and the second electric push rod 224. The bottom of the control cavity is provided with a sliding groove for the movement of the second electric push rod 224, in the present application, the outer circumferential surface of the second guide disc 211 is provided with a mounting ring for preventing the second electric push rod 224 from falling off, and the inner wall surface of the mounting ring is the top surface of the control cavity.

[0036] The first electric push rod 223 and the second electric push rod 224 can be electric push rods, and the pressure sensor can be a strain pressure sensor. The second electric push rod 224 drives the pressing block 222 to move in a direction perpendicular to the axis of the pre-tightening sleeve 221 under the control of the control unit 4. The control unit 4 measures the diameter of the stranded cable 6 through the movement distance of the second electric push rod 224, and at the same time, when the pressure sensor cannot sense pressure, it indicates that the stranded cable 6 is relaxed, the control unit 4 controls the second electric push rod 224 to clamp the stranded cable 6, the first electric push rod 223 drives the pre-tightening sleeve 221 to move to the side of the second guide disc 211 away from the threaded sleeve 214, thereby pulling the stranded cable 6 to keep it in a tensioned state. At the same time, the pressure sensor can sense the tension of the stranded cable 6, and the control unit 4 changes the abutting force of the pressing block 222 according to the signal transmitted by the pressure sensor.

[0037] Please see Figure 6 , Figure 6 is a structural schematic view of the second diameter measuring unit of the first embodiment of the present application. In the present embodiment, the threaded sleeve 214 is internally provided with a containing groove 2141, and the second diameter measuring unit 23 is located in the containing groove 2141, the second diameter measuring unit 23 comprises two symmetrical clamping blocks 231 and a third electric push rod 232 connected with the clamping blocks 231 and controlled to extend and retract by the control unit 4, the third electric push rod 232 drives the pressing block 222 to move in a direction perpendicular to the axis of the wire passing hole 2121, the clamping blocks 231 can be plastic blocks or metal blocks, and the third electric push rod 232 is an electric push rod provided with a pressure sensor. The pressure sensor can sense whether the pressing block 222 contacts the main wire core 7, and the control unit 4 calculates the diameter of the main wire core 7 according to the movement distance of the third push rod.

[0038] The converging mechanism 3 comprises a box 31 at the outlet end of the pre-deformation mechanism 2 and a pulling member 32 for pulling the main core 7, the box 31 is adjustable in distance from the pre-deformation mechanism 2 and is provided with a cable forming hole 311 through which the main core 7 passes, the stranded cable 6 passes through the pre-deformer 21 after passing through the first guide disc 12 and converges towards the cable forming hole 311, and the main core 7 moves along the axis of the first guide disc 12 towards the direction of the pulling member 32. The control unit 4 is located in the box 31, the control unit 4 can receive the measurement data of the first diameter measuring unit 22 and the second diameter measuring unit 23 and calculate the target spiral angle of the stranded cable 6 through an algorithm module, and the control unit 4 can also control the rotating speed of the first driving unit 11, the pulling speed of the pulling member 32 and the distance between the box 31 and the pre-deformation mechanism 2. The box 31 can be a metal box and is internally provided with a circuit board and other control devices, and the pulling member 32 can be a traction machine and other devices driven by a motor and other power devices.

[0039] In the present application, the bottom of the box 31 is provided with a lead screw driven by a motor, the distance between the box 31 and the pre-deformer 21 is changed in the process of rotation of the lead screw, and the distance from the wire passing hole 2121 to the small guide ring 2133 is also changed, so that the tension of the stranded cable 6 can be controlled.

[0040] The working principle of the embodiment is as follows: before the cable forming equipment works, zero point calibration is needed. The control unit 4 first controls the two third electric push rods 232 to move towards each other until the two clamping blocks 231 contact each other, at which time the position readings of the two push rods are recorded, and this state is defined as the diameter zero point. In actual measurement, the diameter of the main core 7 is equal to the distance between the two clamping blocks when they contact each other (i.e. the position difference of the zero point) minus the sum of the displacement amounts of the two third electric push rods 232 respectively. The diameter measurement principle of the first diameter measuring unit 22 is similar, and the position of the second electric push rod 224 when the calibration block 222 contacts the lower friction roller 2211 is defined as the zero point.

[0041] After zero point calibration, the workers fix a plurality of stranded cables 6 in a circumferential array with one end of the main core 7, and the plurality of stranded cables 6 pass through the pre-tightening sleeve 221, the control unit 4 controls the clamping block 222 to contact the stranded cable 6, thereby measuring the diameter of the stranded cable 6, and the control unit 4 controls the third electric push rod 232 to extend, and when the pressure sensor in the third electric push rod 232 senses the pressure, the third electric push rod 232 immediately stops extending, and the control unit 4 calculates the diameter of the main core 7 through the moving distance of the third electric push rod 232.

[0042] The worker can input the preset interval of the stranded cable 6, and the control unit 4 calculates the target spiral angle of the stranded cable 6 under the condition that the stranded cable 6 meets the preset interval based on the input preset interval, and then the control unit 4 can control the rotating speed of the first driving unit 11 and the pulling rate of the pulling member 32, so that the angle formed between the hinged cable 6 and the cabling perforation 311 is equal to the target spiral angle.

[0043] Finally, the control unit 4 controls the plurality of sub-unwinding wheels 14 to provide a pre-tension to the stranded cable 6, after the plurality of stranded cables 6 are tensioned, the control unit 4 controls the driving unit 11 to slightly rotate, when the first electric push rod 223 senses a pressure, it indicates that the stranded cable 6 on the side of the second guide disc 211 away from the first guide disc 12 is in a tensioned state, if no pressure is sensed, it indicates that the stranded cable 6 is in a relaxed state, the control unit 4 controls the second electric push rod 224 to press the stranded cable 6, and controls the first electric push rod 223 to extend, so as to pull the relaxed stranded cable 6 to a tensioned state, when the pressure sensor in the first electric push rod 223 senses a pressure of a preset tension, the control unit 4 controls the driving unit 11 to rotate, so as to flexibly adjust the wrapping density of the stranded cable 6 to the main core 7.

[0044] Embodiment 2 Please refer to Figures 7-10 , Figure 7 is a cross-sectional view of the pre-deformation mechanism of the second embodiment of the present application. The structure of the present embodiment is basically the same as that of the above-mentioned embodiment, and the difference lies in that the rotating shaft 5 is provided with an oil storage cavity 51 for storing lubricating oil, the center rod 212 is provided with a transfer cavity 2122 in communication with the oil storage cavity 51, the second guide disc 211 is provided with a seepage cavity 2111 in communication with the transfer cavity 2122, the seepage cavity 2111 comprises a blocking part 2112 and a seepage part 2113, a blocking plate 2118 is arranged between the blocking part 2112 and the seepage part 2113, the blocking plate 2118 is provided with a blocking hole, the bottom of the pre-tightening sleeve 221 is provided with a through hole for mounting a lower friction roller 2211, the through hole is in communication with the seepage part 2113, so as to realize the communication between the seepage part 2113 and the lower friction roller 2211 at the bottom of the pre-tightening sleeve 221. The seepage part 2113 is provided with a blocking block 2114 matched with the blocking hole, the side of the blocking block 2114 away from the blocking part 2112 is provided with an elastic member 2115 connected with the inner wall surface of the seepage part 2113, the elastic member 2115 is a spring 53, when the second guide disc 211 rotates, the blocking block 2114 presses the elastic member 2115, the blocking hole is partially exposed, the seepage part 2113 is in communication with the blocking part 2112, when the second guide disc 211 is stationary, the elastic member 2115 pushes the blocking block 2114 to block the blocking hole. The rotating shaft 5 can be a hollow metal shaft, the oil storage cavity 51 can be sealed by a sealing cover or the like to prevent leakage of lubricating oil. The elastic member 2115 can be a spring 53, and the blocking block 2114 can be a rubber block.

[0045] Please refer to Figure 11 , Figure 11 is Figure 7 the enlarged view of E area of figure 1. The seepage cavity 2111 is provided with a seepage hole communicating with the transfer cavity 2122, the shaft 5 is provided with a blocking ring 52 connected with the spring 53, before the main rod is inserted into the shaft 5, the spring 53 is stretched, the blocking ring 52 blocks the seepage hole, when the main rod is inserted into the shaft 5, the main rod abuts against the blocking ring 52, the spring 53 is compressed, the seepage hole is exposed, so that the lubricating oil in the oil storage cavity 51 seeps into the transfer cavity 2122. The blocking part 2112 is provided with a cam, the cam is connected with the adjusting rod 2162 penetrating the seepage cavity 2111, the staff can rotate the adjusting rod 2162 to move the blocking block 2114. In the present application, the oil storage cavity 51 and the transfer cavity 2122 are annular cavities, and the outer ring surfaces are conical surfaces with gradually increasing diameters along the moving direction of the main core 7. In the moving process of the shaft 5 and the second guide disc 211, the lubricating oil flows along the conical surfaces under the action of centrifugal force.

[0046] Please refer to Figure 12 , Figure 12 is Figure 7 the enlarged view of D area of figure 1. In the present embodiment, the opposite surfaces of the two clamping blocks 231 are provided with the impregnated cotton 2311, the clamping block 231 is provided with the rubber tube 2312 communicating with the impregnated cotton 2311 and the transfer cavity 2122 at two ends. The wire passing hole 2121 can be a circular hole, the clamping block 231 can be a metal block, the third electric push rod 232 can be an electric push rod, the impregnated cotton 2311 can be a sponge material, and the rubber tube 2312 can be a rubber tube.

[0047] The working principle of the present embodiment is as follows: before the cabling equipment, the elastic member 2115 abuts against the blocking block 2114, the blocking block 2114 blocks the seepage part 2113 and the blocking part 2112, the staff rotates the adjusting rod 2162 to make the cam rotate, the cam pushes the blocking block 2114 to move, so that the blocking part 2112 and the seepage part 2113 are communicated, the lubricating oil impregnates the lower friction roller, and the pre-lubrication in the pre-tightening sleeve 221 is realized. When the cabling equipment works, the blocking block 2114 is pressed under the action of centrifugal force, so that the blocking part 2112 and the seepage part 2113 are communicated, the lubricating oil seeps to the lower friction roller 2211, the lower friction roller 2211 applies the lubricating oil to the surface of the stranded cable 6, so as to reduce the friction force suffered by the stranded cable 6. At the same time, the impregnated cotton 2311 applies the lubricating oil to the surface of the main core 7, so as to reduce the friction force suffered by the stranded cable 6 when it is stranded.

[0048] Embodiment 3 Please refer to Figures 13-15 , Figure 13is a sectional view of the second guide disc of the third embodiment of the present application. The second guide disc 211 comprises a mounting disc 2116 and a plurality of plug-in plates 2117, the first diameter measuring unit 22 and the seepage portion 2113 are located on the plug-in plate 2117, the blocking portion 2112 and the blocking block 2114 are located on the mounting disc 2116, the blocking portion 2112 extends away from the axis of the mounting disc 2116 and the extension end forms a plug-in hole for the plug-in plate 2117, the plug-in plate 2117 is provided with a jacking rod 2119, and the elastic member 2115 is located at one end of the blocking block 2114 away from the jacking rod 2119. When the plug-in plate 2117 is inserted into the plug-in hole, the jacking rod 2119 pushes the blocking block 2114, so that the blocking hole on the blocking plate 2118 is exposed, and the seepage portion 2113 is in communication with the blocking portion 2112. The mounting disc 2116 and the plug-in plate 2117 can be made of plastic or metal material, which is convenient for assembly and disassembly, and is convenient for maintenance and adjustment.

[0049] The working principle of the embodiment is that the second guide disc 211 is replaced by a plug-in structure, which is convenient for installation and maintenance of the first diameter measuring unit 22. In use, the plug-in plate 2117 is inserted into or taken out of the mounting disc 2116, the jacking rod 2119 pushes the blocking block 2114 to move, so that the blocking portion 2112 and the seepage portion 2113 are in communication. The parts that do not need to be guided can not be installed with the plug-in plate 2117, so as to reduce the weight of the second guide disc 211. The parts without the plug-in plate 2117 are blocked by the blocking block 2114 under the action of the elastic member 2115 to block the seepage portion 2113 and the blocking portion 2112.

[0050] Embodiment 4 Please refer to Figure 16 , Figure 16 is a schematic diagram of the twisted cable in the twisted state. The present application provides a control method of a cable forming device, which comprises: S1. inputting a preset interval between adjacent twisted cables 6 into the control unit 4; S2. the first diameter measuring unit 22 measures the diameter of a single twisted cable 6, and the second diameter measuring unit 23 measures the diameter of the main wire core 7; S3. the first diameter measuring unit 22 and the second diameter measuring unit 23 send the detected data to the control unit 4; S4. the control unit calculates the target spiral angle required to meet the preset interval between the twisted cables according to the preset interval between the twisted cables after twisting and the data detected by the first diameter measuring unit 22 and the second diameter measuring unit 23; S5. determining the target pulling rate of the pulling member 32 according to the target spiral angle and the preset rotating speed of the driving unit 11, and adjusting the pulling rate of the pulling member 32 to the target pulling rate by the control unit 4.

[0051] The control unit 4 calculates the formula of the theoretical target spiral angle required to meet the preset interval between the stranded cables 6 according to the preset interval between the stranded cables 6 after stranding and the data detected by the first diameter measuring unit 22 and the second diameter measuring unit 23, which is: wherein D is the diameter of the main core 7, d is the diameter of a single stranded cable 6, n is the number of stranded cables 6, a target is the target spiral angle of the stranded cable 6, g target is the preset interval between adjacent stranded cables 6.

[0052] According to the target spiral angle and the preset rotation speed of the driving unit 11, the formula of the target pulling speed of the pulling member 32 is determined as: wherein ω is the preset rotation speed of the driving unit 11, and v is the speed of the pulling member 32 pulling the main core 7 to move.

[0053] The working principle of the embodiment is that the control method can enable the control unit 4 to control the wrapping density of the stranded cables 6 on the main core 7 according to the diameters of the stranded cables 6 and the main core 7, and the control unit 4 can calculate the target spiral angle of the stranded cables 6 according to the diameters of the stranded cables 6 and the main core 7, and determine the target pulling speed of the pulling member according to the preset interval input by the user and the preset rotation speed of the driving unit 11, so as to generate an instruction to the pulling member 32.

[0054] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, and therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A density-adjustable cabling apparatus characterized by comprising: The application relates to a cable stranding device, which comprises a feeding mechanism (1), a pre-deformation mechanism (2), a convergence mechanism (3) and a control unit (4). The feeding mechanism (1) comprises a first guide disc (12) driven to rotate by a driving unit (11), a main unwinding wheel (13) for unwinding a main core (7) and a plurality of auxiliary unwinding wheels (14) for unwinding a stranding cable (6), the main unwinding wheel (13) and the auxiliary unwinding wheels (14) are located on the same side of the first guide disc (12), and the auxiliary unwinding wheels (14) are arranged in a circumferential array with the first guide disc (12) as the center. The pre-deformation mechanism (2) is located on the side of the guide disc away from the main unwinding wheel (13), and comprises a pre-deformer (21) for pre-deforming the stranding cable (6), the first guide disc (12) drives the pre-deformer (21) to rotate, the pre-deformer (21) is provided with a first diameter measuring unit (22) for measuring the diameter of the stranding cable (6) and a second diameter measuring unit (23) for measuring the diameter of the main core (7). The convergence mechanism (3) comprises a box (31) located at the wire outlet end of the pre-deformation mechanism (2) and a pulling member (32) for pulling the main core (7), the box (31) is adjustable in distance with the pre-deformer (21), and is provided with a cable forming hole (311) through which the main core (7) passes, the stranding cable (6) passes through the first guide disc (12) and then passes through the pre-deformer (21), converges towards the cable forming hole (311), the main core (7) moves along the axis of the first guide disc (12) towards the direction of the pulling member (32), and the control unit (4) is used for receiving a preset interval of adjacent stranding cables (6), the control unit (4) is in communication connection with the first diameter measuring unit (22), the second diameter measuring unit (23), the first driving unit (11) and the pulling member (32), and is used for calculating a target spiral angle of the stranding cable (6) when the adjacent stranding cables (6) are in the preset interval, determining a pulling rate of the pulling member (32) according to the target spiral angle and a preset rotating speed of the driving unit (11), and adjusting the pulling rate of the pulling member (32) to the target pulling rate so as to adjust the spiral angle of the stranding cable (6) to the target spiral angle.

2. A density adjustable cabling apparatus according to claim 1, characterized in that, The pre-deformer (21) comprises a second guide disc (211), a central rod (212) penetrating the center of the second guide disc (211) and provided with threads on the outer circumferential surface, and a guide assembly (213) provided on the outer circumferential surface of the central rod (212), the central rod (212) is provided with a wire passing hole (2121) for the main wire core (7) to pass through in the axial direction thereof, the guide assembly (213) comprises a large guide ring (2131), a medium guide ring (2132) and a small guide ring (2133) with radii decreasing in turn, the outer circumferential surface of the central rod (212) is further sleeved with a threaded sleeve (214) and a rotating sleeve (215) located on the side of the threaded sleeve (214) away from the second guide disc (211), the large guide ring (2131) cooperates with the threaded sleeve (214), the medium guide ring (2132) cooperates with the rotating sleeve (215), and the small guide ring (2133) cooperates with the threads of the central rod (212), the outer circumferential surface of each of the large guide ring (2131), the medium guide ring (2132) and the small guide ring (2133) is provided with a plurality of guide rollers (216) in a circumferential array for guiding the winding of the stranded cable (6).

3. A density adjustable cabling apparatus according to claim 2, characterized in that: The first diameter measuring unit (22) is located on the second guide disc (211), the first diameter measuring unit (22) comprises a pre-tightening sleeve (221), the upper portion of the pre-tightening sleeve (221) is provided with a pressing block (222) penetrating the pre-tightening sleeve (221) and capable of moving in a direction perpendicular to the axis of the pre-tightening sleeve (221), the pressing block (222) is provided with an upper friction roller (2221), the bottom of the pre-tightening sleeve (221) is provided with a lower friction roller (2211), and the two sides of the pre-tightening sleeve (221) are provided with guide rollers (2212), the axes of the upper friction roller (2221) and the lower friction roller (2211) each form an acute angle less than 90° with the generatrix of the pre-tightening sleeve (221).

4. A density adjustable cabling apparatus according to claim 3, characterized in that: The first diameter measuring unit (22) further comprises a first electric push rod (223) with a built-in pressure sensor, the first electric push rod (223) is capable of pushing the pre-tightening sleeve (221) to move in the length direction thereof, the side of the pressing block (222) away from the upper friction roller (2221) is provided with a second electric push rod (224) for pushing the pressing block (222) to move towards the inside of the pre-tightening sleeve (221), and the control unit (4) is capable of receiving the signal of the pressure sensor and controlling the extension and retraction of the first electric push rod (223) and the second electric push rod (224).

5. A density adjustable cabling apparatus according to claim 3, wherein: The first guide disc (12) is provided with a rotating shaft (5) between the rod body, the rotating shaft (5) is provided with an oil storage cavity (51) for storing lubricating oil, the central rod (212) is provided with a transfer cavity (2122) in communication with the oil storage cavity (51), the second guide disc (211) is provided with a seepage cavity (2111) in communication with the transfer cavity (2122), the seepage cavity (2111) comprises a blocking part (2112) and a seepage part (2113), the seepage part (2113) is in communication with the lower friction roller (2211) at the bottom of the pre-tightening sleeve (221), the seepage part (2113) is provided with a plug (2114), the side of the plug (2114) away from the blocking part (2112) is provided with an elastic element (2115) connected with the inner wall surface of the seepage part (2113), a blocking plate (2118) is arranged between the blocking part (2112) and the seepage part (2113), the blocking plate (2118) is provided with a blocking hole matched with the plug (2114), when the second guide disc (211) is static, the elastic element (2115) pushes the plug (2114) to block the blocking hole, when the second guide disc (211) rotates, the plug (2114) extrudes the elastic element (2115), and the plug (2114) leaves the blocking hole.

6. A density adjustable cabling apparatus according to claim 5, characterized in that: The second diameter measuring unit (23) is located in the threaded sleeve (214), the second diameter measuring unit (23) comprises two symmetrically arranged clamping blocks (231) and two third electric push rods (232) controlled to stretch and contract by the control unit (4), the third electric push rod (232) is provided with a pressure sensor and abuts against the inner wall surface of the threaded sleeve (214) at one end and abuts against the clamping block (231) at the other end, each third electric push rod (232) drives the clamping block (231) to move along the axis direction perpendicular to the wire passing hole (2121), and the clamping block (231) can pass through the inner wall surface of the wire passing hole (2121), the opposite surfaces of the two clamping blocks (231) are provided with wetting cotton (2311), and the clamping block (231) is provided with a hose (2312) with two ends in communication with the wetting cotton (2311) and the transfer cavity (2122).

7. A density adjustable cabling apparatus according to claim 6, characterized in that: The second guide disc (211) comprises a mounting disc (2116) and a plurality of plug-in plates (2117), the first diameter measuring unit (22) and the seepage part (2113) are located on the plug-in plates (2117), the sealing part (2112) and the sealing block (2114) are located in the mounting disc (2116), the sealing part (2112) extends away from the axis of the mounting disc (2116) and the extension end forms a plug-in hole for the plug-in of the plug-in plates (2117), the plug-in plates (2117) are provided with a jacking rod (2119), the elastic member (2115) is located at one end of the sealing block (2114) away from the jacking rod (2119), when the plug-in plates (2117) are inserted into the plug-in hole, the jacking rod (2119) pushes the sealing block (2114) away from the sealing hole.

8. A control method of a cabling apparatus, characterized by: The control method of the density-adjustable cabling device of claim 1 comprises the following steps: S1. inputting a preset interval between adjacent stranded cables (6) to the control unit (4); S2. measuring the diameter of a single stranded cable (6) by the first diameter measuring unit (22) and measuring the diameter of the main core (7) by the second diameter measuring unit (23); S3. calculating the theoretical target spiral angle required to meet the preset interval between the stranded cables according to the preset interval between the stranded cables after stranding and the data detected by the first diameter measuring unit (22) and the second diameter measuring unit (23); S4. determining the target pulling rate of the pulling member (32) according to the target spiral angle and the preset rotation speed of the driving unit (11), and adjusting the pulling rate of the pulling member (32) to the target pulling rate by the control unit (4).

9. The control method of the cabling device of claim 8, wherein: The formula for calculating the theoretical target spiral angle required to meet the preset interval between the stranded cables after stranding according to the preset interval between the stranded cables after stranding and the data detected by the first diameter measuring unit (22) and the second diameter measuring unit (23) is: where D is the diameter of the main core (7), d is the diameter of a single stranded cable (6), n is the number of stranded cables (6), a target is the target helix angle of the stranded cable (6), g target is the preset distance between adjacent stranded cables (6).

10. The control method of the cabling device of claim 9, wherein: The formula for determining the target pulling rate of the pulling member (32) according to the target spiral angle and the preset rotation speed of the driving unit (11) is: wherein ω is the preset rotation speed of the driving unit (11) and v is the speed at which the pulling member (32) pulls the main core (7) to move.

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