A wire length detection device

Abstract

The present invention relates to the field of steel wire measurement technology, and in particular to a steel wire length detection device, which includes a detection frame and two steel wire guide discs; a primary detection component, wherein the primary detection component includes two sets of transverse guide rails fixedly connected to two opposing inner walls of the detection frame, a guide block is slidably connected to the inner side of the transverse guide rail, and a T-shaped rotating bracket is fixedly connected to the outer wall of the guide block. The present invention can realize secondary detection of the steel wire by using the contact and friction cooperation between the abutment roller and the friction roller and the steel wire, so as to form a comparison and verification of the steel wire length detection, and the spacing between the two abutment rollers and the two friction rollers can automatically adapt to the diameter of the steel wire, so as to always maintain the contact and friction degree of the abutment roller and the friction roller on the steel wire, ensure the accuracy of the steel wire length detection, effectively improve the stability of the steel wire during the length detection process, and at the same time, can realize the defect detection and marking of the steel wire, which is conducive to ensuring the production quality of the steel wire.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire measurement, and in particular to a steel wire length detection device. Background Art

[0002] Steel wire refers to a material made of metal that is commonly used in a variety of industrial fields. In the relevant application process, steel wire will play different mechanical roles according to specific needs, such as being used to transmit tension or support in the scene of automobile window lifting. At present, the length detection method of steel wire used for automobile window lifting is usually a direct straightening detection method. For example, application publication number CN107339964B discloses a steel wire length detection device for automobile window lifts. A roller contact detection method can also be used, and the number of roller rotations is used to reflect the length of the steel wire, which can effectively prevent the steel wire from being damaged during the straightening detection state.

[0003] The steel wire used for automobile window lifting is not in a straight state in its natural state. If it is forced to be straightened and the length is tested, it is easy to damage the steel wire itself, affecting the performance of the steel wire. The roller contact length detection method usually adopts a spring extrusion structure to make the roller contact the steel wire as closely as possible. However, the steel wire used for automobile window lifting is usually classified into specifications of different diameters. When testing steel wires of different diameters, the roller is likely to produce relative sliding friction with the steel wire, resulting in low stability of the steel wire during the length detection process. In addition, it is difficult to measure the steel wire multiple times continuously during the length detection operation, making it inconvenient to compare and verify the length detection data of the steel wire, and the accuracy of the steel wire length detection cannot be guaranteed. In addition, the steel wire is prone to have defects such as depressions or protrusions due to improper drawing operations during the production process, and it is inconvenient to detect and mark defects during the steel wire length detection operation, which makes it difficult to ensure the production quality of the steel wire. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a steel wire length detection device, which can effectively solve the problems in the prior art that the steel wire straightening detection is likely to affect its subsequent performance, and the steel wire length detection cannot ensure the accuracy of the steel wire length detection due to the inconvenience of comparison and verification.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a steel wire length detection device, comprising a detection frame and two steel wire guide discs;

[0007] A primary detection component, the primary detection component comprises two groups of transverse guide rails fixedly connected to two opposite inner walls of the detection frame, the inner side of the transverse guide rails is slidably connected with a guide block, the outer wall of the guide block is fixedly connected with a T-shaped rotating bracket, the end of the T-shaped rotating bracket is rotatably connected with an abutment roller, the end of the T-shaped rotating bracket is fixedly connected with a No. 1 photoelectric encoder, the No. 1 photoelectric encoder is coaxially connected to the axle of the abutment roller, the inner wall of the detection frame is fixedly connected with an adaptive adjustment component and a defect marking component, the adaptive adjustment component is used to automatically adjust the distance between the two abutment rollers to adapt to the diameter size of the steel wire, so that the contact degree between the abutment roller and the steel wire remains unchanged, and the defect marking component is used to automatically mark the defects existing in the steel wire and the corresponding positions of the defects;

[0008] A secondary detection component, which is fixedly connected to the outer wall of the detection frame and is used to actively drive the steel wire to move and perform secondary detection on the steel wire;

[0009] Two disassembly and assembly components are fixedly connected to the outer wall of the detection frame and are used for quickly installing and disassembling the two wire guide discs.

[0010] Further, the adaptive adjustment component includes a resistance rod fixedly connected to the inner wall of the detection frame, a sliding plate is slidably connected to the resistance rod, the T-shaped rotating bracket is fixedly connected to the sliding plate through a connecting rod, a No. 1 electromagnet is fixedly connected to the inner wall of the detection frame, a No. 2 electromagnet is fixedly connected to the T-shaped rotating bracket, the No. 1 electromagnet and the No. 2 electromagnet are arranged with the same poles repelling each other, and a tension spring is fixedly connected between the inner side of the transverse guide rail and the guide block;

[0011] Among them, the variable resistance rod and the sliding piece constitute a sliding rheostat, and the variable resistance rod, the sliding piece, the first electromagnet, the second electromagnet and the external power supply are connected in series. During the movement of the sliding piece toward the inner wall of the detection frame, the resistance value of the sliding rheostat in the series circuit of the variable resistance rod, the sliding piece, the first electromagnet, the second electromagnet and the external power supply increases.

[0012] Furthermore, the defect marking component includes a distance sensor fixedly connected to the inner wall of the detection frame, the distance sensor is used to monitor the displacement of the T-shaped rotating bracket, the inner wall of the detection frame is fixedly connected to an inkjet sprayer, the inkjet sprayer is electrically connected to the distance sensor, and two spray guns are installed on the inkjet sprayer.

[0013] Furthermore, the secondary detection component includes a low-speed motor fixedly connected to the outer wall of the detection frame, the output end of the low-speed motor is fixedly connected to a transfer shaft, the outer peripheral wall of the transfer shaft is slidably connected to two hollow worms, the spiral directions of the two hollow worms are opposite, the outer peripheral wall of the transfer shaft is fixedly connected to two double-tooth splines, a limiting groove is provided on the inner side of the hollow worm, the double-tooth spline matches the limiting groove, the outer wall of the detection frame is provided with two slide grooves, both of the slide grooves are slidably connected to a rotating shaft, the middle parts of the two rotating shafts are fixedly connected to friction rollers, the outer wall of the detection frame is fixedly connected to a sliding bracket, the sliding bracket is slidably connected to a No. 2 photoelectric encoder, the No. 2 photoelectric encoder is coaxially connected to one of the rotating shafts, and the two ends of the rotating shafts are fixedly connected to worm wheels, and the two worm wheels are respectively meshed with the two hollow worms.

[0014] Furthermore, the secondary detection component also includes two sliders slidably connected to the outer peripheral wall of the adapter shaft, the outer wall of the slider is fixedly connected with a transmission connecting rod, the transmission connecting rod is provided with a through hole, the end of the rotating shaft matches the through hole, and the outer wall of the detection frame is fixedly connected with a servo electric push rod, and two transmission support rods are rotatably connected between the output end of the servo electric push rod and the two sliders, and the servo electric push rod, the resistance rod, the sliding plate and the external power supply are electrically connected.

[0015] Furthermore, the disassembly and assembly component includes a servo motor fixedly connected to the outer wall of the detection frame, and the side wall of the detection frame is penetrated by two disassembly and assembly shafts for rotation, one of the disassembly and assembly shafts is fixedly connected to the output end of the servo motor, a clamping plate is fixedly connected to the wire guide disc, a clamping groove is provided at the end of the disassembly and assembly shaft, and the clamping plate matches the clamping groove, a locking bolt is threadedly connected to the disassembly and assembly shaft, a through hole is provided on the clamping plate, and the locking bolt matches the through hole.

[0016] Furthermore, a support rod is fixedly connected to the inner wall of the detection frame, and a limit ring is fixedly connected to the middle part of the support rod.

[0017] Furthermore, a bending fixing groove is provided on the outer peripheral wall of the wire guide disc.

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. A primary detection component is provided in the present invention. After the steel wire passes through the two abutment rollers, relative friction is generated between the steel wire and the abutment rollers, so that the abutment rollers begin to rotate relative to the steel wire. At this time, a No. 1 photoelectric encoder is used to monitor the number of rotations of the abutment rollers to achieve preliminary detection of the length of the steel wire.

[0020] 2. An adaptive adjustment component is provided in the present invention. When the steel wire passes through the two abutment rollers, contact and squeeze are generated on the abutment rollers, so that the two abutment rollers begin to move close to the inner wall of the detection frame, and drive the sliding plate to slide relative to the variable resistance rod, so that the resistance value of the sliding rheostat composed of the variable resistance rod and the sliding plate increases, that is, the resistance in the circuit composed of the variable resistance rod, the sliding plate, the first electromagnet, the second electromagnet and the external power supply begins to increase, and the current begins to decrease, thereby causing the current of the first electromagnet and the second electromagnet to begin to decrease, that is, the magnetic repulsion between the first electromagnet and the second electromagnet is weakened, and the two abutment rollers begin to stop moving under the external force of the elastic tension of the stretch spring. At this time, the two abutment rollers can just abut against the steel wire, that is, the abutment rollers can always maintain the degree of contact friction with steel wires of different diameters, thereby avoiding sliding friction between the abutment rollers and the steel wire, and ensuring the accuracy of the preliminary detection of the steel wire length.

[0021] 3. A defect marking component is provided in the present invention. If there are concave or convex defects on the steel wire, the abutting roller and the T-shaped rotating bracket will be displaced during the contact and friction between the abutting roller and the steel wire. At this time, a distance sensor is used to monitor the displacement of the T-shaped rotating bracket, so that the distance sensor starts to transmit a control signal to the inkjet sprayer, and then the two spray guns spray marks on the concave or convex positions of the steel wire, so as to realize defect detection marking of the steel wire, which is beneficial to ensure the production quality of the steel wire.

[0022] 4. A secondary detection component is provided in the present invention. When the steel wire contacts the abutting roller and squeezes the abutting roller, that is, when the sliding piece slides relative to the variable resistance rod, the servo electric push rod starts to run and pushes the two sliding blocks to move on the adapter shaft, so that the two groups of hollow worms and the worm gear start to move in opposite directions. The movement degree of the sliding piece relative to the variable resistance rod can determine the degree of current change of the servo electric push rod, that is, it can drive the two friction rollers to move to a suitable position, so that the two friction rollers can maintain the same contact friction degree with steel wires of different diameters. At the same time, the two friction rollers can be driven to rotate in the opposite clockwise direction by driving the adapter shaft to rotate. The number of rotations of the friction roller is monitored by the No. 2 photoelectric encoder to realize the secondary detection of the steel wire length. By measuring the steel wire length continuously for multiple times, the steel wire length detection can be compared and verified with the primary detection to ensure the accuracy of the steel wire length detection. In addition, the steel wire can be actively driven to move while realizing the steel wire length detection, thereby improving the smoothness and stability of the steel wire during the length detection operation.

[0023] 5. The present invention provides a disassembly and assembly component, which utilizes the clamping cooperation between the clamping plate on the wire guide disc and the disassembly and assembly shaft to quickly complete the installation and disassembly operations of the wire guide disc, so as to quickly realize the loading and unloading operations of the wire in the wire length detection operation, thereby improving the efficiency of the wire length detection operation. At the same time, the wire guide disc can be driven to rotate, and the driving cooperation of the friction roller on the wire can further improve the stability of the wire during the length detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of a three-dimensional structure of the present invention from one viewing angle;

[0026] Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0027] Figure 3 A schematic diagram of a partial structure of a primary detection component and a defect marking component in the present invention;

[0028] Figure 4 It is a schematic diagram of the partial structure of the T-shaped rotating bracket in the present invention;

[0029] Figure 5 It is a schematic diagram of a partial structure of a secondary detection component in the present invention;

[0030] Figure 6 It is an exploded cross-sectional view of the structure of the transfer shaft and the hollow worm in the present invention;

[0031] Figure 7 It is an exploded view of the disassembled component part structure in the present invention.

[0032] Figure numerals: 1, detection frame; 2, wire guide plate; 3, transverse guide rail; 4, guide block; 5, T-shaped rotating bracket; 6, contact roller; 7, No. 1 photoelectric encoder; 8, variable resistance rod; 9, sliding plate; 10, No. 1 electromagnet; 11, No. 2 electromagnet; 12, tension spring; 13, distance sensor; 14, inkjet sprayer; 15, spray gun; 16, low-speed motor; 17, adapter shaft; 18, hollow worm; 19, double-tooth flower key; 20, limit groove; 21, slide groove; 22, rotating shaft; 23, friction roller; 24, sliding bracket; 25, No. 2 photoelectric encoder; 26, worm gear; 27, slider; 28, transmission connecting rod; 29, servo electric push rod; 30, transmission support rod; 31, servo motor; 32, disassembly and assembly shaft; 33, clamping plate; 34, clamping groove; 35, locking bolt; 36, supporting rod; 37, limit ring; 38, bending fixing groove. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention will be further described below in conjunction with the embodiments.

[0035] Example: Refer to Figures 1 to 7 A wire length detection device comprises a detection frame 1, two wire guide discs 2, a primary detection component, a secondary detection component and two disassembly and assembly components, wherein the primary detection component is used to realize a preliminary detection of the wire length, the secondary detection component is used to actively drive the wire to move and perform a secondary detection on the wire, and the disassembly and assembly component is used to quickly install and remove the two wire guide discs 2; a bending fixing groove 38 is provided on the outer peripheral wall of the wire guide disc 2, and the bending fixing groove 38 has a certain depth, and the wire end is bent and connected to the bending fixing groove 38, so that the wire end can be removed. The first detection component comprises two sets of transverse guide rails 3 fixedly connected to two opposite inner walls of the detection frame 1, a guide block 4 is slidably connected to the inner side of the transverse guide rails 3, a T-shaped rotating bracket 5 is fixedly connected to the outer wall of the guide block 4, and an abutting roller 6 is rotatably connected to the end of the T-shaped rotating bracket 5, and a No. 1 photoelectric encoder 7 is fixedly connected to the end of the T-shaped rotating bracket 5, and the No. 1 photoelectric encoder 7 is coaxially connected to the wheel axle of the abutting roller 6;

[0036] Install the wire guide disc 2 between the two disassembly and assembly shafts 32, and pass one end of the wire through the limit ring 37, control the servo motor 31 to start, and drive the disassembly and assembly shaft 32 and the wire guide disc 2 to rotate through the servo motor 31, so that the wire on the wire guide disc 2 begins to unwind, and then the wire contacts with the two abutment rollers 6 and passes through the two abutment rollers 6. At this time, relative friction is generated between the wire and the two abutment rollers 6 and the wire begins to rotate relative to the wire. During the rotation of the abutment roller 6, the No. 1 photoelectric encoder 7 can be used to monitor the number of rotations of the abutment roller 6 to achieve preliminary detection of the wire length.

[0037] Reference Figure 1 — Figure 4 The inner wall of the detection frame 1 is fixedly connected with an adaptive adjustment component, which is used to automatically adjust the distance between the two abutting rollers 6 to adapt to the diameter of the steel wire, so that the contact degree between the abutting roller 6 and the steel wire remains unchanged. The adaptive adjustment component includes a variable resistance rod 8 fixedly connected to the inner wall of the detection frame 1, and a sliding plate 9 is slidably connected to the variable resistance rod 8. The T-shaped rotating bracket 5 is fixedly connected to the sliding plate 9 through a connecting rod. The inner wall of the detection frame 1 is fixedly connected with a No. 1 electromagnet 10, and the T-shaped rotating bracket 5 is fixedly connected with a No. 2 The electromagnet 11, the first electromagnet 10 and the second electromagnet 11 are arranged with the same poles repelling each other, and a tension spring 12 is fixedly connected between the inner side of the transverse guide rail 3 and the guide block 4, wherein the variable resistance rod 8 and the sliding plate 9 constitute a sliding rheostat, and the variable resistance rod 8, the sliding plate 9, the first electromagnet 10, the second electromagnet 11 and the external power supply are connected in series, and when the sliding plate 9 moves toward the inner wall of the detection frame 1, the resistance value of the sliding rheostat in the series circuit of the variable resistance rod 8, the sliding plate 9, the first electromagnet 10, the second electromagnet 11 and the external power supply becomes larger;

[0038] In the process of the steel wire passing through the two abutment rollers 6, the two abutment rollers 6 will be squeezed, so that the two abutment rollers 6 and the T-shaped rotating bracket 5 begin to move towards the inner wall direction of the detection frame 1, and the T-shaped rotating bracket 5 begins to drive the sliding piece 9 to slide relative to the variable resistance rod 8, so that the total resistance value in the circuit where the first electromagnet 10 and the second electromagnet 11 are located increases, that is, the current of the first electromagnet 10 and the second electromagnet 11 begins to decrease, and the magnetic repulsion between the first electromagnet 10 and the second electromagnet 11 begins to weaken. At this time, the elastic tension of the stretch spring 12 and the magnetic repulsion between the first electromagnet 10 and the second electromagnet 11 lose balance. Under the external force of the elastic tension of the stretch spring 12, the two abutment rollers 6 begin to stop moving. At this time, the position where the two abutment rollers 6 stay is just able to abut against the steel wire, that is, the abutment roller 6 can always maintain the degree of contact friction with the steel wires of different diameters, avoid sliding friction between the abutment roller 6 and the steel wire, and ensure the accuracy of the preliminary detection of the steel wire length.

[0039] Reference Figure 1 — Figure 3 The inner wall of the detection frame 1 is fixedly connected with a defect marking component, which is used to automatically mark the defects existing in the steel wire and the corresponding positions of the defects. The defect marking component includes a distance sensor 13 fixedly connected to the inner wall of the detection frame 1, and the distance sensor 13 is used to monitor the displacement of the T-shaped rotating bracket 5. The inner wall of the detection frame 1 is fixedly connected with an inkjet sprayer 14, and the inkjet sprayer 14 is electrically connected to the distance sensor 13. Two spray guns 15 are installed on the inkjet sprayer 14. It should be noted that the two spray guns 15 can spray marks of different colors on the steel wire, that is, when the distance sensor 13 detects that the T-shaped rotating bracket 5 has a displacement in different directions, it will control one of the spray guns 15 to spray a mark of the corresponding color on the defect of the steel wire;

[0040] If there are concave or convex defects on the steel wire, the two abutting rollers 6 will move toward or oppositely during the contact and friction process with the steel wire, causing the T-shaped rotating bracket 5 to be displaced. At this time, the distance sensor 13 can be used to monitor the displacement of the T-shaped rotating bracket 5. The distance sensor 13 will transmit a control signal to the inkjet sprayer 14 according to the displacement of the T-shaped rotating bracket 5, so that the two spray guns 15 will spray and mark the concave or convex positions of the steel wire according to the control signal, so as to realize the defect detection marking of the steel wire, which is beneficial to ensure the production quality of the steel wire.

[0041] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6The secondary detection component is fixedly connected to the outer wall of the detection frame 1. The secondary detection component includes a low-speed motor 16 fixedly connected to the outer wall of the detection frame 1. The output end of the low-speed motor 16 is fixedly connected to a transfer shaft 17. The outer peripheral wall of the transfer shaft 17 is slidably connected to two hollow worms 18. The spiral directions of the two hollow worms 18 are opposite. The outer peripheral wall of the transfer shaft 17 is fixedly connected to two double-tooth splines 19. A limiting groove 20 is provided on the inner side of the hollow worm 18. The double-tooth spline 19 matches the limiting groove 20. The outer wall of the detection frame 1 is provided with two slide grooves 21. The two slide grooves 21 are slidably connected to a rotating shaft 22. The middle parts of the two rotating shafts 22 are fixedly connected to friction rollers 23. The outer wall of the detection frame 1 is fixedly connected to a sliding bracket 24. The sliding bracket 24 is slidably connected to a No. 2 photoelectric encoder 25. The No. 2 photoelectric encoder 25 is connected to one of the rotating shafts 22. Coaxial connection, and the ends of the two rotating shafts 22 are fixedly connected with worm gears 26, and the two worm gears 26 are respectively meshed with the two hollow worms 18. It should be noted that before the next wire detection operation begins, the two sets of hollow worms 18 and worm gears 26 need to be manually driven to move toward each other so that the two sets of hollow worms 18 and worm gears 26 can be reset to facilitate the next wire length detection operation. The secondary detection component also includes two sliders 27 slidably connected to the outer peripheral wall of the adapter shaft 17, and the outer wall of the slider 27 is fixedly connected with a transmission connecting rod 28, and a through hole is opened on the transmission connecting rod 28, and the end of the rotating shaft 22 matches the through hole. A servo electric push rod 29 is fixedly connected to the outer wall of the detection frame 1, and two transmission support rods 30 are rotatably connected between the output end of the servo electric push rod 29 and the two sliders 27. The servo electric push rod 29, the variable resistance rod 8, and the sliding plate 9 are electrically connected to the external power supply.

[0042] When the slider 9 slides relative to the resistance rod 8, the servo electric push rod 29 starts to run and pushes the two sliders 27 to move through the transmission support rod 30, so that the two groups of hollow worms 18 and the worm wheel 26 start to move in opposite directions. It should be noted that the sliding degree of the slider 9 relative to the resistance rod 8 determines the degree of change of the total resistance value of the circuit where the servo electric push rod 29 is located, that is, it determines the degree of change of the current of the servo electric push rod 29. The servo electric push rod 29 is built with a current sensor, a controller and a timer. When the current sensor detects that the current of the servo electric push rod 29 changes for the first time during the wire length detection process, the current sensor can monitor the current change and the degree of current change, and then the current sensor can transmit the signal to the controller, so that the controller starts to start the servo electric push rod 29 and controls the driving length of the servo electric push rod 29. At the same time, the timer is used to limit the running time of the servo electric push rod 29, so that the servo electric push rod 29 can stop running immediately, thereby driving the two friction rollers. 23 is moved to a suitable position so that the two friction rollers 23 can maintain the contact friction degree with the steel wire. At this time, the two friction rollers 23 can just contact with the steel wire and avoid relative sliding friction, that is, the two friction rollers 23 can always maintain the contact friction degree with steel wires of different diameters. At the same time, the low-speed motor 16 can be used to drive the adapter shaft 17 and the two hollow worms 18 to rotate, and the meshing transmission of the two hollow worms 18 and the two worm wheels 26 is used to drive the two rotating shafts 22 and the friction rollers 23 to rotate in the opposite clockwise direction. At this time, the No. 2 photoelectric encoder 25 can be used to monitor the number of rotations of the friction roller 23 to realize the secondary detection of the steel wire length. By measuring the steel wire length continuously for multiple times, a comparison and verification of the steel wire length detection can be formed to ensure the accuracy of the steel wire length detection. At the same time, the two friction rollers 23 can be used to actively drive the steel wire to improve the smoothness and stability of the steel wire during the length detection operation.

[0043] Reference Figure 1 , Figure 2 and Figure 7 The disassembly assembly is fixedly connected to the outer wall of the detection frame 1, and the disassembly assembly includes a servo motor 31 fixedly connected to the outer wall of the detection frame 1. The side wall of the detection frame 1 is rotatably connected to two disassembly shafts 32, one of which is fixedly connected to the output end of the servo motor 31. A clamping plate 33 is fixedly connected to the wire guide disc 2, and a clamping groove 34 is provided at the end of the disassembly shaft 32. The clamping plate 33 matches the clamping groove 34. A locking bolt 35 is threadedly connected to the disassembly shaft 32, and a through hole is provided on the clamping plate 33. The locking bolt 35 matches the through hole.

[0044] When the wire guide disc 2 is installed and used, the clamping plate 33 on the wire guide disc 2 is connected to the clamping groove 34 on the disassembly shaft 32, and the clamping plate 33 and the disassembly shaft 32 are locked and fixed by the locking bolt 35. When the wire guide disc 2 is loaded and unloaded, the locking bolt 35 is similarly contacted to lock and fix the disassembly shaft 32 and the clamping plate 33, and the wire guide disc 2 can be directly removed. By quickly completing the installation and disassembly operations of the wire guide disc 2, the loading and unloading operations of the wire in the wire length detection operation can be quickly realized. After the installation of the wire guide disc 2 is completed, the disassembly shaft 32 and the wire guide disc 2 can be driven to rotate by the servo motor 31. At the same time, the driving cooperation of the friction roller 23 to the wire can further improve the stability of the wire during the length detection process.

[0045] The working principle of the present invention is as follows:

[0046] 1. When the steel wire length is detected, the steel wire guide disc 2 is installed between the two disassembly and assembly shafts 32, and one end of the steel wire is passed through the limit ring 37, and the servo motor 31 is controlled to start. The servo motor 31 drives the disassembly and assembly shaft 32 and the steel wire guide disc 2 to rotate, so that the steel wire on the steel wire guide disc 2 begins to unwind, and then the steel wire contacts the two abutment rollers 6 and passes through the two abutment rollers 6. At this time, the steel wire and the two abutment rollers 6 produce relative friction and begin to rotate relative to the steel wire. During the rotation of the abutment roller 6, the No. 1 photoelectric encoder 7 can be used to monitor the number of rotations of the abutment roller 6 to achieve preliminary detection of the steel wire length;

[0047] 2. When the steel wire passes through the two abutting rollers 6, the two abutting rollers 6 will be squeezed, so that the two abutting rollers 6 and the T-shaped rotating bracket 5 begin to move toward the inner wall direction of the detection frame 1, and the T-shaped rotating bracket 5 begins to drive the sliding piece 9 to slide relative to the variable resistance rod 8, so that the total resistance value in the circuit where the first electromagnet 10 and the second electromagnet 11 are located increases, that is, the current of the first electromagnet 10 and the second electromagnet 11 begins to decrease, and the magnetic repulsion between the first electromagnet 10 and the second electromagnet 11 begins to weaken. At this time, the elastic tension of the stretching spring 12 and the magnetic repulsion between the first electromagnet 10 and the second electromagnet 11 lose balance. Under the external force of the elastic tension of the stretching spring 12, the two abutting rollers 6 begin to stop moving. At this time, the position where the two abutting rollers 6 stay is just able to abut against the steel wire, that is, the abutting roller 6 can always maintain the contact friction degree with the steel wires of different diameters, avoiding sliding friction between the abutting roller 6 and the steel wire, and ensuring the accuracy of the preliminary detection of the steel wire length;

[0048] 3. When the steel wire passes through the two abutting rollers 6, if there are concave or convex defects on the steel wire, the two abutting rollers 6 will move toward or oppositely during the contact and friction with the steel wire, so that the T-shaped rotating bracket 5 will be displaced. At this time, the distance sensor 13 can be used to monitor the displacement of the T-shaped rotating bracket 5. The distance sensor 13 will transmit a control signal to the inkjet sprayer 14 according to the displacement of the T-shaped rotating bracket 5, so that the two spray guns 15 spray marks on the concave or convex position of the steel wire according to the control signal, so as to realize the defect detection mark of the steel wire, which is conducive to ensuring the production quality of the steel wire;

[0049] 4. When the steel wire contacts the two abutting rollers 6 and squeezes the abutting rollers 6, that is, when the slide 9 slides relative to the variable resistance rod 8, the servo electric push rod 29 starts to run and pushes the two sliders 27 to move through the transmission support rod 30, so that the two sets of hollow worms 18 and the worm wheel 26 start to move in opposite directions. It should be noted that the sliding degree of the slide 9 relative to the variable resistance rod 8 determines the degree of change in the total resistance value of the circuit where the servo electric push rod 29 is located, that is, it determines the degree of change in the current of the servo electric push rod 29, so that the two friction rollers 23 can be driven to move to a suitable position, so that the two friction rollers 23 can just contact with the steel wire and avoid relative sliding friction, that is, the two friction rollers 23 can always maintain contact with steel wires of different diameters. The contact friction degree can be determined by the low-speed motor 16, and the transfer shaft 17 and the two hollow worms 18 can be driven to rotate. The meshing transmission of the two hollow worms 18 and the two worm wheels 26 can be used to drive the two rotating shafts 22 and the friction rollers 23 to rotate in the opposite clockwise direction. At this time, the second photoelectric encoder 25 can be used to monitor the number of rotations of the friction rollers 23 to achieve secondary detection of the length of the steel wire. By measuring the length of the steel wire for multiple times, a comparison and verification of the length detection of the steel wire can be formed to ensure the accuracy of the length detection of the steel wire. In addition, while realizing the length detection of the steel wire, the two friction rollers 23 can be used to actively drive the steel wire to improve the smoothness and stability of the steel wire during the length detection operation.

[0050] 5. When the wire guide disc 2 is installed and used, the clamping plate 33 on the wire guide disc 2 is connected to the clamping groove 34 on the disassembly shaft 32, and the clamping plate 33 and the disassembly shaft 32 are locked and fixed by the locking bolt 35. When the wire guide disc 2 is loaded and unloaded, the locking bolt 35 is similarly contacted to lock and fix the disassembly shaft 32 and the clamping plate 33, and the wire guide disc 2 can be directly removed. By quickly completing the installation and disassembly operations of the wire guide disc 2, the loading and unloading operations of the wire can be quickly realized in the wire length detection operation. After the installation of the wire guide disc 2 is completed, the disassembly shaft 32 and the wire guide disc 2 can be driven to rotate by the servo motor 31. At the same time, the driving cooperation of the friction roller 23 to the wire can further improve the stability of the wire during the length detection process.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel wire length detection device, characterized in that: include: A detection frame (1) and two wire guide discs (2); A primary detection component, the primary detection component comprising two groups of transverse guide rails (3) fixedly connected to two opposing inner walls of a detection frame (1), the inner side of the transverse guide rails (3) being slidably connected to a guide block (4), the outer wall of the guide block (4) being fixedly connected to a T-shaped rotating bracket (5), the end of the T-shaped rotating bracket (5) being rotatably connected to an abutting roller (6), the end of the T-shaped rotating bracket (5) being fixedly connected to a No. 1 photoelectric encoder (7), the No. 1 photoelectric encoder (7) being coaxially connected to the wheel axle of the abutting roller (6), the inner wall of the detection frame (1) being fixedly connected to an adaptive adjustment component and a defect marking component, the adaptive adjustment component being used to automatically adjust the spacing between the two abutting rollers (6) to adapt to the diameter of the steel wire so that the contact degree between the abutting roller (6) and the steel wire remains unchanged, and the defect marking component being used to automatically mark defects existing in the steel wire and corresponding positions of the defects; The adaptive adjustment component comprises a resistance rod (8) fixedly connected to the inner wall of the detection frame (1), a sliding plate (9) being slidably connected to the resistance rod (8), the T-shaped rotating bracket (5) being fixedly connected to the sliding plate (9) via a connecting rod, a first electromagnet (10) being fixedly connected to the inner wall of the detection frame (1), a second electromagnet (11) being fixedly connected to the T-shaped rotating bracket (5), the first electromagnet (10) and the second electromagnet (11) being arranged to repel each other with the same poles, and a tension spring (12) being fixedly connected between the inner side of the transverse guide rail (3) and the guide block (4); The variable resistance rod (8) and the sliding plate (9) constitute a sliding rheostat, and the variable resistance rod (8), the sliding plate (9), the first electromagnet (10), the second electromagnet (11) and the external power supply are connected in series, and when the sliding plate (9) moves toward the inner wall of the detection frame (1), the resistance value of the sliding rheostat in the series circuit of the variable resistance rod (8), the sliding plate (9), the first electromagnet (10), the second electromagnet (11) and the external power supply increases; A secondary detection component, the secondary detection component is fixedly connected to the outer wall of the detection frame (1), and is used to actively drive the steel wire to move and perform secondary detection on the steel wire; Two disassembly and assembly components are fixedly connected to the outer wall of the detection frame (1) and are used for quickly installing and disassembling the two wire guide discs (2).

2. A steel wire length detection device according to claim 1, characterized in that: The defect marking component comprises a distance sensor (13) fixedly connected to the inner wall of the detection frame (1), the distance sensor (13) being used to monitor the displacement of the T-shaped rotating bracket (5), an inkjet sprayer (14) being fixedly connected to the inner wall of the detection frame (1), the inkjet sprayer (14) being electrically connected to the distance sensor (13), and two spray guns (15) being installed on the inkjet sprayer (14).

3. A steel wire length detection device according to claim 1, characterized in that: The secondary detection component comprises a low-speed motor (16) fixedly connected to the outer wall of the detection frame (1); the output end of the low-speed motor (16) is fixedly connected to a transfer shaft (17); the outer peripheral wall of the transfer shaft (17) is slidably connected to two hollow worms (18); the spiral directions of the two hollow worms (18) are opposite; the outer peripheral wall of the transfer shaft (17) is fixedly connected to two double-tooth splines (19); a limiting groove (20) is provided on the inner side of the hollow worm (18); the double-tooth spline (19) matches the limiting groove (20); the outer wall of the detection frame (1) Two slide grooves (21) are provided, and a rotating shaft (22) is slidably connected to the two slide grooves (21), and a friction roller (23) is fixedly connected to the middle of the two rotating shafts (22). A sliding bracket (24) is fixedly connected to the outer wall of the detection frame (1), and a second photoelectric encoder (25) is slidably connected to the sliding bracket (24). The second photoelectric encoder (25) is coaxially connected to one of the rotating shafts (22), and worm wheels (26) are fixedly connected to the ends of the two rotating shafts (22), and the two worm wheels (26) are respectively meshed with two hollow worms (18).

4. A steel wire length detection device according to claim 3, characterized in that: The secondary detection component further comprises two sliders (27) slidably connected to the outer peripheral wall of the adapter shaft (17); a transmission connecting rod (28) is fixedly connected to the outer wall of the slider (27); a through hole is formed on the transmission connecting rod (28); an end of the rotating shaft (22) matches the through hole; a servo electric push rod (29) is fixedly connected to the outer wall of the detection frame (1); two transmission support rods (30) are rotatably connected between the output end of the servo electric push rod (29) and the two sliders (27); the servo electric push rod (29), the resistance rod (8), the sliding plate (9) and an external power supply are electrically connected.

5. A steel wire length detection device according to claim 1, characterized in that: The disassembly assembly component comprises a servo motor (31) fixedly connected to the outer wall of the detection frame (1); two disassembly shafts (32) are rotatably connected to the side wall of the detection frame (1); one of the disassembly shafts (32) is fixedly connected to the output end of the servo motor (31); a clamping plate (33) is fixedly connected to the wire guide disc (2); a clamping groove (34) is provided at the end of the disassembly shaft (32); the clamping plate (33) matches the clamping groove (34); a locking bolt (35) is threadedly connected to the disassembly shaft (32); a through hole is provided on the clamping plate (33); the locking bolt (35) matches the through hole.

6. A steel wire length detection device according to claim 1, characterized in that: A support rod (36) is fixedly connected to the inner wall of the detection frame (1), and a limit ring (37) is fixedly connected to the middle portion of the support rod (36).

7. A steel wire length detection device according to claim 1, characterized in that: The outer peripheral wall of the wire guide disc (2) is provided with a bending fixing groove (38).

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