Broken wire detection system of wire drawing machine

Abstract

The utility model discloses a wire drawing machine broken wire detection system which comprises a machine frame and a PLC installed on the machine frame, two sets of wire guiding mechanisms are arranged on the inner top wall of the machine frame from left to right, and a front guide wheel, a magnetic memory planning device, a weak magnetic detection device and a rear guide wheel are sequentially installed on the inner bottom wall of the machine frame from left to right. The two wire guiding mechanisms each comprise a square pipe fixedly connected to the inner top wall of the rack, conveying wheels arranged at intervals in the length direction of the square pipe are rotationally connected into the square pipe, and a clamping assembly used for clamping a steel wire is installed on the square pipe. According to the utility model, the broken wire can be fed back timely and accurately, the defects of abrasion, corrosion, fatigue and the like can be judged, the steel wire can be clamped and fixed after the broken wire is broken, the broken steel wire is prevented from scattering all around and beating to destroy equipment to cause economic loss or harm to field personnel, the safety is effectively improved, and the subsequent maintenance is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wire drawing machine related equipment, and more specifically to a wire breakage detection system for a wire drawing machine. Background Art

[0002] Wire drawing machine, also known as wire drawing machine and wire drawing machine, is a widely used mechanical equipment in industrial applications. It is widely used in machinery manufacturing, hardware processing, petrochemical, plastics, bamboo and wood products, wire and cable and other industries. It belongs to the pre-processing equipment for the production of standard parts and other metal products. The purpose is to draw the wire or rod produced by steel manufacturers and transported to the standard parts and other metal product manufacturers through the wire drawing machine, so that the diameter, roundness, internal metallographic structure, surface finish and straightness of the wire or rod meet the raw material processing requirements for the production of standard parts and other metal products.

[0003] After searching, the document with publication number CN205887679U discloses a wire break alarm device for a wire drawing machine, including a wire drawing machine, a pay-off wheel and a take-up wheel. The device realizes automatic power-off alarm function through pressure changes to avoid losses. The device has high practicality and is suitable for wide promotion.

[0004] However, in actual use, the above-mentioned prior art uses the elastic force of the spring in conjunction with the pressure sensor for feedback. During normal wire drawing work, sometimes some tension factors may cause erroneous feedback even though the wire is not broken. In addition, since the production speed of the wire drawing machine is very high, once a wire break occurs, even if feedback is given in time and the equipment is stopped urgently, after the wire is broken, the broken wire rope is easy to scatter and hit the sensor, causing economic losses or harm to on-site personnel. The safety is low and it causes troubles in subsequent maintenance and replacement. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a wire breakage detection system for a wire drawing machine.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A wire breakage detection system for a wire drawing machine comprises a frame and a PLC controller installed on the frame, wherein two sets of wire guide mechanisms are arranged on the inner top wall of the frame from left to right, and a front guide wheel, a magnetic memory planning device, a weak magnetic detection device and a rear guide wheel are arranged on the inner bottom wall of the frame from left to right in sequence;

[0008] Among them, the two groups of wire mechanisms both include a square tube fixedly connected to the top wall of the frame, and the square tube is rotatably connected with a conveying wheel arranged at intervals along the length direction of the square tube. A clamping assembly for clamping the steel wire is installed on the square tube. After being pulled out by the wire drawing machine, the steel wire passes through the wire mechanism on the left, the front guide wheel, the magnetic memory planning device, the weak magnetic detection device, the rear guide wheel and the wire mechanism on the right in sequence.

[0009] As a further description of the above technical solution: the clamping assembly includes an upper clamping plate and a lower clamping plate located in the square tube and distributed in a linear array, the top of each upper clamping plate is fixedly connected to an upper connecting rod, the end of the upper connecting rod away from the upper clamping plate penetrates the square tube and extends to the rear of the square tube, the bottom of each lower clamping plate is fixedly connected to a lower connecting rod, the end of the lower connecting rod away from the lower clamping plate penetrates the square tube and extends to the rear of the square tube, a rotating shaft is rotatably arranged on the back side of the square tube, and a tooth groove is opened on the side of the upper connecting rod and the lower connecting rod close to the rotating shaft, and a driven gear meshing with the tooth groove is fixedly sleeved on the outer wall of the rotating shaft.

[0010] As a further description of the above technical solution: the clamping assembly also includes a cylinder fixedly connected to the top of the frame, the movable end of the cylinder is fixedly connected to a rack, and a driving gear meshing with the rack is fixedly sleeved on the rotating shaft.

[0011] As a further description of the above technical solution: the cross-sections of the upper connecting rod and the lower connecting rod are both square, and the upper connecting rod and the lower connecting rod are respectively slidably matched with the top and bottom of the square tube.

[0012] As a further description of the above technical solution: the control end of the PLC controller is electrically connected to the magnetic memory planning device and the cylinder through a wire, and the input end of the PLC controller is electrically connected to the weak magnetic detection device through a wire.

[0013] As a further description of the above technical solution: anti-skid protrusions are fixedly provided on opposite sides of the upper clamping plate and the lower clamping plate, and the anti-skid protrusions are arranged obliquely.

[0014] As a further description of the above technical solution: a cover plate is hingedly connected to the upper part of the front side of the square tube through a hinge.

[0015] As a further description of the above technical solution: a buckle is hingedly installed on one side of the cover plate through an axle pin, a buckle plate is fixedly connected to the front side of the square tube, a U-shaped spring piece is fixedly connected to the side of the buckle facing the cover plate, the side of the U-shaped spring piece away from the buckle is in contact with the cover plate, and the buckle can be engaged on the buckle plate.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The feedback on wire breakage is timely and accurate, and defects such as wear, rust, and fatigue can be determined. After a wire break, the wire can be clamped and fixed to prevent the broken wire from scattering and damaging equipment, causing economic losses or harming on-site personnel. Safety is effectively improved and subsequent maintenance is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 This is a front structural diagram of the wire guide mechanism of the utility model;

[0020] Figure 3 For the utility model Figure 2 A in the middle is a schematic diagram of the enlarged results;

[0021] Figure 4 It is a schematic diagram of the back structure of the wire guide mechanism of the utility model;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Frame; 2. PLC controller; 3. Wire mechanism; 31. Square tube; 32. Conveying wheel; 33. Clamping assembly; 331. Upper clamping plate; 332. Lower clamping plate; 333. Upper connecting rod; 334. Lower connecting rod; 335. Rotating shaft; 336. Tooth groove; 337. Driven gear; 338. Cylinder; 339. Rack; 3310. Driving gear; 3311. Anti-slip protrusion; 34. Cover plate; 35. Buckle; 36. Buckle plate; 37. U-shaped spring; 4. Front guide wheel; 5. Magnetic memory planning device; 6. Weak magnetic detection device; 7. Rear guide wheel. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0026] See also Figures 1 to 5 In the utility model, a wire drawing machine wire breakage detection system includes a frame 1 and a PLC controller 2 installed on the frame 1, two sets of wire guide mechanisms 3 are arranged on the inner top wall of the frame 1 from left to right, and a front guide wheel 4, a magnetic memory planning device 5, a weak magnetic detection device 6 and a rear guide wheel 7 are sequentially installed on the inner bottom wall of the frame 1 from left to right;

[0027] Among them, the two sets of wire mechanisms 3 both include a square tube 31 fixedly connected to the inner top wall of the frame 1, and a conveying wheel 32 arranged at intervals along the length direction of the square tube 31 is rotatably connected inside the square tube 31. A clamping assembly 33 for clamping the steel wire is installed on the square tube 31. After the steel wire is pulled out by the wire drawing machine, it passes through the wire mechanism 3 on the left, the front guide wheel 4, the magnetic memory planning device 5, the weak magnetic detection device 6, the rear guide wheel 7 and the wire mechanism 3 on the right in sequence.

[0028] In this embodiment, preferably, the clamping assembly 33 includes an upper clamping plate 331 and a lower clamping plate 332 which are located in the square tube 31 and are distributed in a linear array. The top of each upper clamping plate 331 is fixedly connected to an upper connecting rod 333, and one end of the upper connecting rod 333 away from the upper clamping plate 331 passes through the square tube 31 and extends to the rear of the square tube 31. The bottom of each lower clamping plate 332 is fixedly connected to a lower connecting rod 334, and one end of the lower connecting rod 334 away from the lower clamping plate 332 passes through the square tube 31 and extends to the rear of the square tube 31. A rotating shaft 335 is provided on the surface for rotation, and a tooth groove 336 is provided on the side of the upper connecting rod 333 and the lower connecting rod 334 close to the rotating shaft 335. A driven gear 337 meshing with the tooth groove 336 is fixedly sleeved on the outer wall of the rotating shaft 335; the rotation of the rotating shaft 335 drives the driven gear 337 to rotate, and the driven gear 337 drives the upper connecting rod 333 and the lower connecting rod 334 to move respectively through the tooth groove 336. When the upper connecting rod 333 moves downward, the lower connecting rod 334 moves upward, so that the upper clamping plate 331 and the lower clamping plate 332 can move relative to each other for clamping.

[0029] In this embodiment, preferably, the clamping assembly 33 also includes a cylinder 338 fixedly connected to the top of the frame 1, the movable end of the cylinder 338 is fixedly connected to a rack 339, and a driving gear 3310 meshing with the rack 339 is fixedly sleeved on the rotating shaft 335; the rack 339 is driven up and down by the extension and retraction of the cylinder 338, and the rack 339 drives the driving gear 3310 to drive the rotating shaft 335 to rotate.

[0030] In this embodiment, preferably, the cross-sections of the upper connecting rod 333 and the lower connecting rod 334 are both square, and the upper connecting rod 333 and the lower connecting rod 334 are respectively slidably matched with the top and bottom of the square tube 31; through the shape setting of the upper connecting rod 333 and the lower connecting rod 334, the upper connecting rod 333 and the lower connecting rod 334 respectively drive the upper clamping plate 331 and the lower clamping plate 332 to move vertically up and down.

[0031] In this embodiment, preferably, the control end of the PLC controller 2 is electrically connected to the magnetic memory planning device 5 and the cylinder 338 through a wire, and the input end of the PLC controller 2 is electrically connected to the weak magnetic detection device 6 through a wire; the PLC controller 2 is used as the control end and corresponding programming is performed.

[0032] In this embodiment, preferably, anti-skid protrusions 3311 are fixedly provided on opposite sides of the upper clamping plate 331 and the lower clamping plate 332, and the anti-skid protrusions 3311 are inclined; the inclined anti-skid protrusions 3311 play an anti-skid role when the upper clamping plate 331 and the lower clamping plate 332 clamp the steel wire.

[0033] In the present embodiment, preferably, a cover plate 34 is hingedly connected to the upper part of the front side of the square tube 31 by a hinge, a buckle 35 is hingedly installed on one side of the cover plate 34 by an axle pin, a buckle plate 36 is fixedly connected to the front side of the square tube 31, a U-shaped spring piece 37 is fixedly connected to the side of the buckle 35 facing the cover plate 34, the side of the U-shaped spring piece 37 away from the buckle 35 abuts against the cover plate 34, and the buckle 35 can be engaged with the buckle plate 36; by pressing the buckle 35 to compress the U-shaped spring piece 37, the buckle 35 can be separated from the buckle plate 36, and the cover plate 34 can be opened, so that the steel wire can be placed in the square tube 31 conveniently. Compared with the method of directly passing the steel wire through the square tube 31, the steel wire can be prevented from bending and being unable to pass over the multiple conveying wheels 32.

[0034] The working principle and use process of this utility model:

[0035] After being drawn out by the wire drawing machine, the steel wire passes through the left conductor mechanism 3, the front guide wheel 4, the magnetic memory planning device 5, the weak magnetic detection device 6, the rear guide wheel 7 and the right conductor mechanism 3 in sequence. In this process, the spin magnetic moment direction of the magnetic domain of the steel wire in the natural state is disordered. The magnetic memory planning device 5 applies a moving magnetic field to the steel wire to change the morphology of the magnetic domain in the steel wire, so that the steel wire has a moderate low-level magnetic energy product, thereby forming a memory magnetic field. The memory magnetic field will not disappear with the withdrawal of the external magnetic field, and will exist stably for a long time as long as there is no severe mechanical vibration or high temperature.

[0036] The weak magnetic detection device 6 can distinguish the change information of the weak magnetic field physical characteristics of the defects such as broken wire, wear, corrosion, fatigue, etc. of the steel wire under the memory magnetic field condition, calibrate the magnetic energy potential characteristic information of the normal volume element memory of the steel wire, and compare it with the extracted other volume element information, so as to effectively identify the difference in magnetic energy potential caused by the degeneration of the load material, analyze the quantitative relationship between the physical field variable information and the corresponding mechanical load-bearing performance, and transmit the signal to the PLC controller 2;

[0037] The PLC controller 2 makes a judgment based on the detection situation. When the wire is broken, the PLC controller 2 can control the corresponding equipment to stop and control the cylinder 338 to retract. The cylinder 338 drives the rack 339 to move upward, and the rack 339 drives the driving gear 3310 to drive the rotating shaft 335 to rotate. The driven gear 337 rotates with the rotating shaft 335 and cooperates with the tooth grooves 336 on the upper connecting rod 333 and the lower connecting rod 334, thereby driving the upper connecting rod 333 to move downward and the lower connecting rod 334 to move upward, thereby driving the upper clamping plate 331 and the lower clamping plate 332 to move relative to each other to clamp the wire, so as to avoid the broken wire rope from scattering and hitting the equipment to cause economic losses or harm to the on-site personnel. The safety is effectively improved, and the position of the wire rope is fixed after being clamped, which is convenient for cleaning up the accumulated wires, messy wires, and rewiring after the wire is broken, making subsequent maintenance more convenient.

[0038] The electronic components and modules used in the content of this utility model can all be parts that are commonly used in the market and can realize the specific functions in this case, and the specific models and sizes can be selected and adjusted according to actual needs. The electronic components and modules are all connected to an external power supply and a control switch for use. Their specific circuit connection methods and methods of use are commonly used public technologies and will not be elaborated on here.

[0039] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A wire breakage detection system for a wire drawing machine, comprising a frame (1) and a PLC controller (2) mounted on the frame (1), characterized in that: The inner top wall of the frame (1) is provided with two sets of wire guide mechanisms (3) from left to right, and the inner bottom wall of the frame (1) is provided with a front guide wheel (4), a magnetic memory planning device (5), a weak magnetic detection device (6) and a rear guide wheel (7) in sequence from left to right; Wherein, the two groups of the wire guide mechanisms (3) both comprise a square tube (31) fixedly connected to the inner top wall of the frame (1), a conveying wheel (32) arranged at intervals along the length direction of the square tube (31) being rotatably connected inside the square tube (31), a clamping assembly (33) for clamping the steel wire is installed on the square tube (31), and the steel wire, after being drawn out by the wire drawing machine, passes through the wire guide mechanism (3) on the left side, the front guide wheel (4), the magnetic memory planning device (5), the weak magnetic detection device (6), the rear guide wheel (7) and the wire guide mechanism (3) on the right side in sequence.

2. A wire breakage detection system for a wire drawing machine according to claim 1, characterized in that: The clamping assembly (33) comprises an upper clamping plate (331) and a lower clamping plate (332) which are located in the square tube (31) and are distributed in a linear array. The top of each upper clamping plate (331) is fixedly connected to an upper connecting rod (333). One end of the upper connecting rod (333) away from the upper clamping plate (331) passes through the square tube (31) and extends to the rear of the square tube (31). The bottom of each lower clamping plate (332) is fixedly connected to a lower connecting rod (334). The end of the lower connecting rod (334) away from the lower clamping plate (332) passes through the square tube (31) and extends to the rear of the square tube (31). A rotating shaft (335) is rotatably arranged on the back of the square tube (31). A tooth groove (336) is formed on the side of the upper connecting rod (333) and the lower connecting rod (334) close to the rotating shaft (335). A driven gear (337) meshing with the tooth groove (336) is fixedly sleeved on the outer wall of the rotating shaft (335).

3. A wire breakage detection system for a wire drawing machine according to claim 2, characterized in that: The clamping assembly (33) further comprises a cylinder (338) fixedly connected to the top of the frame (1); a rack (339) is fixedly connected to the movable end of the cylinder (338); and a driving gear (3310) meshing with the rack (339) is fixedly sleeved on the rotating shaft (335).

4. A wire breakage detection system for a wire drawing machine according to claim 2, characterized in that: The cross-sections of the upper connecting rod (333) and the lower connecting rod (334) are both square, and the upper connecting rod (333) and the lower connecting rod (334) are respectively slidably matched with the top and bottom of the square tube (31).

5. A wire breakage detection system for a wire drawing machine according to claim 3, characterized in that: The control end of the PLC controller (2) is electrically connected to the magnetic memory planning device (5) and the cylinder (338) via a wire, and the input end of the PLC controller (2) is electrically connected to the weak magnetic detection device (6) via a wire.

6. A wire breakage detection system for a wire drawing machine according to claim 2, characterized in that: An anti-slip protrusion (3311) is fixedly provided on one side opposite to the upper clamping plate (331) and the lower clamping plate (332), and the anti-slip protrusion (3311) is arranged in an inclined manner.

7. A wire breakage detection system for a wire drawing machine according to claim 1, characterized in that: A cover plate (34) is hingedly connected above the front side of the square tube (31) via a hinge.

8. A wire breakage detection system for a wire drawing machine according to claim 7, characterized in that: A buckle (35) is hingedly mounted on one side of the cover plate (34) via an axle pin, a buckle plate (36) is fixedly connected to the front side of the square tube (31), a U-shaped spring sheet (37) is fixedly connected to the side of the buckle (35) facing the cover plate (34), a side of the U-shaped spring sheet (37) away from the buckle (35) is in contact with the cover plate (34), and the buckle (35) can be engaged with the buckle plate (36).

Images