Monofilament on-line detection device and detection method

Abstract

The application discloses a kind of monofilament online detection device and detection method, device includes rack and install on rack and enter line guide pulley group, tension wheel part, traction wheel part and damping wheel part;The tension wheel part includes movable tension wheel;The monofilament to be detected is sequentially wound around enter line guide pulley group, tension wheel, enter line guide pulley group, traction wheel part, damping wheel part and traction wheel part and is led out;The damping wheel part is used to apply resistance to monofilament, and the tension of monofilament is applied by traction wheel part to detect monofilament performance.The application can effectively, comprehensively screen out monofilament with quality defect, avoid defect monofilament to shift to next process to cause greater economic loss, and improve product final qualified rate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of detection devices, and particularly relates to a single-wire online detection device and a detection method. BACKGROUND

[0002] Steel wire products, which are as small as hair and as large as bridge cables, are everywhere in our life.

[0003] The production of steel wire goes through the processes of coil storage, multi-process drawing, extension, twisting, etc. In the process, single-wire drawing is an important basic process, which is to draw a thick steel wire through multiple passes and processes until it is thin. If the single-wire surface cracks, internal impurities, hardened crystals, and other quality defects occur during the drawing process, they cannot be discovered and eliminated in time, which will affect the final product yield. For example, if the single-wire with defects is transferred to the next twisting process, it will cause greater economic losses, and even if the product with defects is delivered to the customer, it will cause serious quality feedback and brand value impact.

[0004] In the prior art, the method for detecting single-wire is manual detection of the surface single-wire quality of the spool after stopping, but this detection method cannot effectively and comprehensively find the single-wire quality inside the spool, so it is difficult to screen all unqualified single-wires. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provide a single-wire online detection device and a detection method, which can effectively and comprehensively screen single-wires with quality defects, avoid the transfer of defective single-wires to the next process, cause greater economic losses, and improve the final product yield.

[0006] The present application provides the following technical solutions:

[0007] In a first aspect, a single-wire online detection device is provided, which includes a rack and an incoming wire guide wheel set, a tension wheel assembly, a traction wheel assembly, and a damping wheel assembly installed on the rack.

[0008] The tension wheel assembly includes a movable tension wheel.

[0009] The single-wire to be detected is guided out in sequence through the incoming wire guide wheel set, the tension wheel, the incoming wire guide wheel set, the traction wheel assembly, the damping wheel assembly, and the traction wheel assembly.

[0010] The damping wheel assembly is used to apply resistance to the single-wire, and the traction wheel assembly is used to apply tension to the single-wire to detect the performance of the single-wire.

[0011] Further, a driving assembly and a controller are further included, the driving assembly is connected to the traction wheel assembly, and the tension wheel assembly, the driving assembly, and the damping wheel assembly are respectively connected to the controller.

[0012] Further, the wire inlet guide wheel set comprises a guide wheel support, a guide wheel shaft connected with the guide wheel support, and an inner wire passing wheel and an outer wire passing wheel installed outside the guide wheel shaft, the inner wire passing wheel and the outer wire passing wheel are both rotatably connected with the guide wheel shaft through two first bearings and are separated by a bearing spacer between the two first bearings, and a bearing washer is arranged between the first bearing of the inner wire passing wheel and the guide wheel support.

[0013] Further, the tension wheel assembly comprises two symmetrically arranged guide rod supports, a guide rod connected between the two guide rod supports, a sliding block slidingly installed outside the guide rod, and a tension wheel assembly installed on the sliding block, a self-lubricating spacer is installed inside the sliding block, the tension wheel assembly comprises a tension wheel shaft fixedly connected with the sliding block, a tension wheel rotatably installed outside the tension wheel shaft through a second bearing, and a tension wheel washer arranged between the tension wheel and the sliding block.

[0014] Further, a displacement sensor is installed below the sliding block, the displacement sensor is connected with the controller, and the displacement sensor is used to detect the position of the tension wheel and transmit the position signal to the controller.

[0015] Further, the traction wheel assembly comprises a traction wheel shaft and a passive pulley, a first bearing seat, a follow-up wheel and a traction wheel installed outside the traction wheel shaft in sequence; the passive pulley and the traction wheel are fixedly installed at both ends of the traction wheel shaft through a first expansion sleeve and a second expansion sleeve respectively; a second spacer is arranged between the traction wheel and the follow-up wheel; a third bearing, a first spacer and a fourth bearing are arranged between the first bearing seat and the traction wheel shaft in sequence, and a first locking cap and a first bearing cover plate are respectively installed on both sides of the first bearing seat.

[0016] Further, the driving assembly comprises a traction motor and a driving pulley connected with the output shaft of the traction motor, a synchronous belt is connected between the driving pulley and the passive pulley, the traction motor is connected with the controller, and the controller is used to control the rotating speed of the traction motor.

[0017] Further, the damping wheel assembly comprises a magnetic powder brake, a damping wheel shaft connected with the magnetic powder brake, and a second bearing seat and a damping wheel installed outside the damping wheel shaft; the magnetic powder brake is installed on the rack through a fixed support, the magnetic powder brake is connected and installed with the damping wheel shaft through a flat key, the damping wheel is installed at the end of the damping wheel shaft through a third expansion sleeve; a fifth bearing, a third spacer and a sixth bearing are arranged between the second bearing seat and the damping wheel shaft in sequence, and a second locking cap and a second bearing cover plate are respectively installed on both sides of the second bearing seat.

[0018] In a second aspect, a method for detecting a single wire online by using the device of the first aspect is provided, comprising:

[0019] The monofilament online detection device is installed between the wire drawing machine and the take-up machine;

[0020] The monofilament drawn out by the wire drawing machine is sequentially wound around the inner wire guide wheel of the wire guide wheel set, the tension wheel of the tension wheel assembly, the outer wire guide wheel of the wire guide wheel set, the follow-up wheel of the traction wheel assembly, the damping wheel of the damping wheel assembly and the traction wheel of the traction wheel assembly, and then is drawn out to the take-up machine.

[0021] The wire drawing machine is started, the tension wheel moves according to the change of the monofilament tension, the rotating speed of the traction wheel is adjusted so that the tension wheel is in the middle stable position.

[0022] The damping wheel assembly applies resistance to the monofilament, and the traction wheel assembly applies tension to the monofilament to detect the performance of the monofilament.

[0023] Further, the monofilament is wound around the damping wheel outside for at least 3.5 turns, the monofilament is wound around the traction wheel outside for at least 3.5 turns, and the traction wheel assembly applies a tension of 70%-90% of the breaking force of the monofilament to the monofilament.

[0024] Compared with the prior art, the monofilament online detection device has the following beneficial effects:

[0025] The monofilament online detection device provided by the application is installed between the wire drawing machine and the take-up machine, the monofilament drawn out by the wire drawing machine is sequentially wound around the inner wire guide wheel of the wire guide wheel set, the tension wheel of the tension wheel assembly, the outer wire guide wheel of the wire guide wheel set, the follow-up wheel of the traction wheel assembly, the damping wheel of the damping wheel assembly and the traction wheel of the traction wheel assembly, and then is drawn out to the take-up machine, the damping wheel assembly applies resistance to the monofilament, the traction wheel assembly applies tension to the monofilament, and then the monofilament is elastically deformed, so that the monofilament with surface cracks, internal impurities, hardened crystals and other quality defects is fully and effectively screened out before plastic deformation, the monofilament with quality defects is prevented from being transferred to the next process to cause greater economic loss, and the final product qualification rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure schematic view of the monofilament online detection device in the embodiment of the application;

[0027] Figure 2 is a side view internal structure schematic view of the monofilament online detection device in the embodiment of the application;

[0028] Figure 3 is a cross-sectional structure schematic view of the wire guide wheel set in the embodiment of the application;

[0029] Figure 4 is a partial cross-sectional structure schematic view of the tension wheel assembly in the embodiment of the application;

[0030] Figure 5 is a partial cross-sectional structure schematic view of the tension wheel assembly in the embodiment of the application.

[0031] Figure 6 is a schematic view of the cross-sectional structure of the traction wheel assembly in the embodiment of the present application;

[0032] Figure 7 is a schematic view of the cross-sectional structure of the damping wheel assembly in the embodiment of the present application;

[0033] In the figure, the following are marked: 1, frame; 2, wire entry guide wheel set; 3, tension wheel assembly; 4, traction wheel assembly; 5, damping wheel assembly; 6, driving pulley; 7, traction motor; 8, synchronous belt; 9, guide wheel support; 10, bearing washer; 11, first bearing; 12, bearing spacer; 131, inner wire passing wheel; 132, outer wire passing wheel; 14, guide wheel spacer; 15, guide wheel shaft; 16, guide rod support; 17, guide rod; 18, tension wheel; 19, sliding block; 20, self-lubricating spacer; 21, tension wheel washer; 22, second bearing; 23, tension wheel shaft; 24, first expansion sleeve; 25, driven pulley; 26, first locking cap; 27, third bearing; 28, first spacer; 29, first bearing seat; 30, fourth bearing; 31, first bearing cover plate; 32, follower wheel; 33, second spacer; 34, traction wheel; 35, traction wheel shaft; 36, fixed support; 37, flat key; 38, magnetic powder brake; 39, damping wheel; 40, damping wheel shaft; 41, displacement sensor; 42, controller; 43, single wire; 44, second expansion sleeve; 45, second locking cap; 46, fifth bearing; 47, third spacer; 48, second bearing seat; 49, sixth bearing; 50, second bearing cover plate; 51, third expansion sleeve. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0035] It should be noted that in the description of the present application, the terms "front", "back", "left", "right", "up", "down", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and do not require the present application to be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0036] Example 1

[0037] As Figure 1 and Figure 2As shown, the embodiment provides a kind of monofilament online detection device, including rack 1 and the wire guide wheel group 2 of installation on rack 1, tension wheel part 3, traction wheel part 4, damping wheel part 5, drive assembly and controller 42;The monofilament to be detected passes wire guide wheel group 2, tension wheel part 3, wire guide wheel group 2, traction wheel part 4, damping wheel part 5 and traction wheel part 4 in turn and is led out;Damping wheel part 5 is used to apply resistance to monofilament, and tension is applied to monofilament by traction wheel part 4 to detect monofilament performance;Drive assembly is connected traction wheel part 4, and tension wheel part 3, drive assembly and damping wheel part 5 are respectively connected controller 42.

[0038] As Figure 3 Shown, wire guide wheel group 2 includes guide wheel support 9 installed on rack 1, guide wheel shaft 15 connected with guide wheel support 9 and inner wire passing wheel 131 and outer wire passing wheel 132 installed on the outside of guide wheel shaft 15, and inner wire passing wheel 131 and outer wire passing wheel 132 are rotatably connected with guide wheel shaft 15 by two first bearings 11 and are separated by bearing spacer 12 between two first bearings 11, and first bearing of inner wire passing wheel 131 is provided with bearing washer 10 between guide wheel support 9.

[0039] As Figure 4 And Figure 5 Shown, tension wheel part 3 includes two symmetrical guide rod supports 16, guide rod 17 connected between two guide rod supports 16, sliding block 19 slidingly installed on the outside of guide rod 17 and tension wheel assembly installed on sliding block 19, self-lubricating spacer 20 is installed in sliding block 19, and tension wheel assembly includes tension wheel shaft 23 fixedly connected with sliding block 19, tension wheel 18 rotatably installed on the outside of tension wheel shaft 23 by second bearing 22 and tension wheel washer 21 arranged between tension wheel 18 and sliding block 19. When monofilament advances, different tension of monofilament will produce different pulling force to tension wheel 18, so that tension wheel 18 and sliding block 19 move along guide rod 17.Displacement sensor 41 is installed below sliding block 19, displacement sensor 41 is connected with controller 42, and displacement sensor 41 is used to detect the position of tension wheel 18 and transmit position signal to controller 42.

[0040] As Figure 6As shown, the traction wheel part 4 includes a traction wheel axle 35 and, in sequence, a passive pulley 25, a first bearing seat 29, a driven wheel 32 and a traction wheel 34 installed outside the traction wheel axle 35; the passive pulley 25 and the traction wheel 34 are fixedly installed at both ends of the traction wheel axle 35 through a first expansion sleeve 24 and a second expansion sleeve 44 respectively; the traction wheel 34 and the driven wheel 32 are provided with a second spacer ring 33 therebetween; the first bearing seat 29 is installed on the frame 1, and the first bearing seat 29 is provided with a first locking cap 26 and a first bearing cover plate 31 on both sides respectively; the first bearing seat 29 is provided with, in sequence, a third bearing 27, a first spacer ring 28 and a fourth bearing 30 between the first bearing seat 29 and the traction wheel axle 35, so that the traction wheel axle 35 and the first bearing seat 29 are rotationally connected.

[0041] As shown in Figure 2 and Figure 6 , the driving assembly includes a traction motor 7 and a driving pulley 6 connected with the output shaft of the traction motor 7, and the driving pulley 6 and the passive pulley 25 are connected with a synchronous belt 8. When the traction motor 7 works, the driving pulley 6 rotates, and through the synchronous belt 8, the passive pulley 25 rotates synchronously, and then the traction wheel axle 35 and the driven wheel 32 and the traction wheel 34 outside the traction wheel axle 35 rotate. The traction motor 7 is connected with a controller 42, the controller 42 receives the position signal of the tension wheel from a displacement sensor 41, calculates and controls the rotating speed of the traction motor 7, so that the tension wheel 18 is in the middle stable position.

[0042] As shown in Figure 7 , the damping wheel part 5 includes a magnetic powder brake 38, a damping wheel axle 35 connected with the magnetic powder brake 38 and a second bearing seat 48 and a damping wheel 39 installed outside the damping wheel axle 35; the magnetic powder brake 38 is installed on the frame 1 through a fixed support 36, the magnetic powder brake 38 is connected and installed with the damping wheel axle 40 through a flat key 37, the damping wheel 39 is installed at the end of the damping wheel axle 40 through a third expansion sleeve 51; the second bearing seat 48 is installed on the frame 1, and the second bearing seat 48 is provided with a second locking cap 45 and a second bearing cover plate 50 on both sides respectively, and the second bearing seat 48 is provided with, in sequence, a fifth bearing 46, a third spacer ring 47 and a sixth bearing 49 between the second bearing seat 48 and the damping wheel axle 35, so that the damping wheel axle 35 and the second bearing seat 48 are rotationally connected. The magnetic powder brake 38 is connected with the controller 42, and the output power of the magnetic powder brake 38 can be set through the controller 42, so that the damping wheel 39 applies the required resistance to the single wire.

[0043] Embodiment 2

[0044] As shown in Figures 1-7 , the embodiment provides a method for online detection of single wire by using the device of embodiment 1, which comprises the following steps:

[0045] Step one, install the single wire online detection device between the wire drawing machine and the take-up machine.

[0046] Step Two, Press Figure 1 As indicated by the arrow, the monofilament 43 to be tested, extended from the drawing machine, first turns around the inner guide wheel 131 of the infeed guide wheel assembly 2, enters the tension wheel assembly 3, and winds 0.5 turns at the tension wheel 18. It then enters the infeed guide wheel assembly 2 again, turns around the outer guide wheel 132, then enters the traction wheel assembly 4, turns around the follower wheel 32, enters the damping wheel assembly 5, and winds around the damping wheel 39. To increase the friction of the monofilament pre-damping wheel 39 and reduce slippage, it winds at least 3.5 turns before exiting the damping wheel 39. Finally, it enters the traction wheel assembly 4, winds at least 3.5 turns on the traction wheel 34, and is then led out to the take-up machine, completing the monofilament winding process.

[0047] Step 3: Start the wire drawing machine. The tension change of the monofilament 43 causes the tension wheel 18 to move. The displacement sensor 41 under the tension wheel 18 detects the position of the tension wheel 18 and feeds it back to the controller 42. The PLC inside the controller 42 calculates and controls the traction motor 7 to accelerate or decelerate, so that the tension wheel 18 is in a stable middle position.

[0048] Step 4: Set the relevant parameters of the magnetic powder brake 38 at the controller 42 so that the damping wheel 39 applies the required resistance and pulls the monofilament through the traction wheel 34, thereby applying tension to the monofilament in the tension application area (i.e., the monofilament between the damping wheel and the traction wheel). The tension of the monofilament can be increased to 70%-90% of the breaking force of the monofilament, effectively filtering out products with cracks, internal impurities, and hardened crystals on the surface of the monofilament, thus achieving the purpose of testing the performance of the monofilament.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A monofilament online detection device, characterized in that, Includes a frame and, mounted on the frame, an inlet guide wheel assembly, a tension wheel assembly, a traction wheel assembly, a damping wheel assembly, a drive assembly, and a controller; The tension wheel assembly includes a movable tension wheel; The monofilament to be tested is sequentially routed around the infeed guide wheel assembly, tension wheel, infeed guide wheel assembly, traction wheel assembly, damping wheel assembly, and traction wheel assembly before being led out. The damping wheel assembly is used to apply resistance to the monofilament, and the tension of the monofilament is applied through the traction wheel assembly to detect the performance of the monofilament; The drive assembly is connected to the traction wheel assembly, and the tension wheel assembly, drive assembly, and damping wheel assembly are respectively connected to the controller. The tension wheel assembly includes two symmetrically arranged guide rod supports, a guide rod connected between the two guide rod supports, a slider slidably mounted outside the guide rod, and a tension wheel assembly mounted on the slider. A displacement sensor is installed below the slider, and the displacement sensor is connected to a controller. The displacement sensor is used to detect the position of the tension wheel and transmit the position signal to the controller. A self-lubricating spacer is installed inside the slider. The tension wheel assembly includes a tension wheel shaft fixedly connected to the slider, a tension wheel rotatably mounted outside the tension wheel shaft via a second bearing, and a tension wheel washer located between the tension wheel and the slider. The drive assembly includes a traction motor and a drive pulley connected to the output shaft of the traction motor. A synchronous belt connects the drive pulley and the driven pulley. The traction motor is connected to a controller, which is used to control the speed of the traction motor. The traction wheel assembly includes a traction wheel axle and a driven pulley, a first bearing housing, a follower wheel, and a traction wheel sequentially mounted on the outside of the traction wheel axle. The driven pulley and the traction wheel are fixedly mounted on both ends of the traction wheel axle by a first expansion sleeve and a second expansion sleeve, respectively. A second spacer is provided between the traction wheel and the follower wheel. A third bearing, a first spacer, and a fourth bearing are sequentially provided between the first bearing housing and the traction wheel axle. A first locking cap and a first bearing cover plate are respectively installed on both sides of the first bearing housing.

2. The online monofilament detection device according to claim 1, characterized in that, The infeed guide wheel assembly includes a guide wheel support, a guide wheel shaft connected to the guide wheel support, and an inner guide wheel and an outer guide wheel installed outside the guide wheel shaft. The inner guide wheel and the outer guide wheel are rotatably connected to the guide wheel shaft through two first bearings and are separated by bearing spacers. A bearing washer is provided between the first bearing of the inner guide wheel and the guide wheel support.

3. The online monofilament detection device according to claim 1, characterized in that, The damping wheel assembly includes a magnetic powder brake, a damping wheel axle connected to the magnetic powder brake, a second bearing housing and a damping wheel mounted on the outside of the damping wheel axle; the magnetic powder brake is mounted on the frame by a fixed bracket, the magnetic powder brake is connected to the damping wheel axle by a flat key, and the damping wheel is mounted on the end of the damping wheel axle by a third expansion sleeve; a fifth bearing, a third spacer and a sixth bearing are sequentially provided between the second bearing housing and the damping wheel axle, and a second locking cap and a second bearing cover plate are respectively installed on both sides of the second bearing housing.

4. A method for online detection of monofilaments using the apparatus described in any one of claims 1 to 3, characterized in that, include: The monofilament online detection device is installed between the drawing machine and the take-up machine; The single wire to be tested, extended from the drawing machine, passes sequentially through the inner guide wheel of the inlet guide wheel assembly, the tension wheel of the tension wheel assembly, the outer guide wheel of the inlet guide wheel assembly, the follower wheel of the traction wheel assembly, the damping wheel of the damping wheel assembly, and the traction wheel of the traction wheel assembly before being led out to the take-up machine. Start the wire drawing machine. The tension wheel moves its position according to the change in the tension of the single filament. Adjust the speed of the traction wheel to keep the tension wheel in a stable middle position. The monofilament performance is tested by applying resistance to the monofilament through the damping wheel assembly and applying tension to the monofilament through the traction wheel assembly.

5. The online detection method for monofilaments according to claim 4, characterized in that, The monofilament is wound at least 3.5 turns outside the damping wheel and at least 3.5 turns outside the traction wheel. The tension applied to the monofilament by the traction wheel assembly is 70%-90% of the breaking force of the monofilament.

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