Cold heading online raw material surface defect detection and separation device

Abstract

The utility model discloses a cold heading online detection and separation device for surface defects of raw materials, and belongs to the field of processing equipment. According to the detection and separation device, a workbench is arranged on a rack; a straightening mechanism, a cold header and a detection mechanism are arranged on the workbench, the detection mechanism is located between the straightening mechanism and the cold header, the detection mechanism comprises a detection frame arranged on the workbench, a detection channel is arranged in the detection frame, a detection probe is arranged in the detection channel, and the detection probe is connected with a detector through a wire. The detector comprises a control center with built-in software and a display screen, and the display screen is connected with the control center. On-line detection of cold heading wires and automatic separation of defective material products are realized by adding an independent detection device while small defects of materials do not excite a pressure sensor of cold heading equipment. And frequent shutdown, incomplete machine cleaning, incapability of operation, quality risk and low efficiency when the sensitivity of the pressure sensor is set to be too high are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing equipment field especially relates to a detection separation device of cold heading on -line raw material surface defect. BACKGROUND

[0002] The raw material commonly used in the cold heading industry is wire rod, and its manufacturing process needs to go through multiple processes such as smelting, refining, continuous casting, heating and rolling, drawing, spheroidizing treatment, etc. The wire rod manufacturing process is affected by each process parameter, and the wire rod surface and near-surface are affected by the lack of processing technology of the rolling groove surface, the accumulation of iron oxide scale, or rolling, drawing, etc. Or due to improper equipment adjustment, mold wear or uneven metal flow, or due to material defects, etc. It will appear scratches, folds, linear cracks and other phenomena.

[0003] Such surface and near-surface defective raw materials will affect the appearance quality and mechanical properties of the cold heading parts, leading to an increase in product scrap rate, thereby increasing production costs and possibly causing product failure during use.

[0004] For the surface defect problem, the current technical means is to increase the pressure sensor at each station of the cold heading equipment, identify the different feedback signals of the pressure at a certain station caused by material defects during production, and alarm and stop the machine. Then, through the operator to identify the problem, clean up the residual products in the machine to prevent the continuous production of defective products. Because the material defect is very small and discontinuous, the pressure sensor is too sensitive, which will cause frequent shutdown and heavy workload for cleaning the machine. This method is not strong in operability in daily production. UTILITARIAN CONTENT

[0005] To solve the above technical problems, the utility model provides a detection separation device of cold heading on-line raw material surface defect.

[0006] The technical scheme of the utility model is: a detection separation device of cold heading on-line raw material surface defect, comprising:

[0007] A rack is provided with a workbench on the rack;

[0008] A straightening mechanism is provided on the workbench, and the straightening mechanism performs wire rod conveying and straightening;

[0009] A cold heading machine is provided with a wire rod input at the feeding port and processed; and

[0010] The detection mechanism is arranged on the workbench and is located between the straightening mechanism and the cold header, and comprises a detection frame arranged on the workbench, a detection channel arranged in the detection frame, and a detection probe arranged in the detection channel and connected with a detection instrument through a lead wire. The detection instrument comprises a control center with built-in software and a display screen connected with the control center.

[0011] Further, the detection probe is an eddy current probe. The eddy current probe facilitates online nondestructive testing.

[0012] Further, the detection probe is a through-type probe, and the through direction of the through-type probe is coaxially arranged with the detection channel. The through-type probe improves the smoothness and convenience of detection. The through-type probe has a frequency range of 64 Hz-2 MHz, a gain of 0-48 db, a step distance of 0.5 db, a phase of 0-360 degrees, and a step distance of 1 degree. The configuration can realize full-automatic online detection of the surface and near-surface crack defects of raw materials at a speed of 500 / min of the cold header.

[0013] Further, the detection mechanism is further connected with a PLC controller, the PLC controller is connected with a pushing cylinder, the pushing cylinder is located at the discharge port of the cold header, and the working end of the pushing cylinder faces the discharge port of the cold header. When the detection is a defective product or a defective product, the pushing cylinder is used to remove it. The stability of the material in the subsequent processing process is ensured, and the continuous operation is realized, and there is no problem of temporary shutdown.

[0014] Further, the straightening mechanism is arranged in at least two groups, and the at least two groups of straightening mechanisms comprise at least two straightening directions.

[0015] Further, the straightening mechanism comprises:

[0016] A straightening frame is arranged on the workbench;

[0017] A fixed wheel is rotatably arranged on the straightening frame;

[0018] A movable wheel is arranged on the straightening frame through a vertical lifting assembly, and the movable wheel and the fixed wheel are located on two sides of the wire respectively.

[0019] Further, the fixed wheel is arranged in three, the movable wheel is arranged in two, and the fixed wheel and the movable wheel are arranged in sequence. The wire can be stably straightened.

[0020] Further, the straightening frame comprises a horizontal plate, a first vertical plate and a second vertical plate are arranged on the horizontal plate respectively, the fixed wheel is arranged on the first vertical plate, and the vertical lifting assembly is arranged on the second vertical plate.

[0021] Further, the vertical lifting assembly comprises:

[0022] a lifting screw rod arranged in parallel with the second vertical plate;

[0023] a lifting nut sleeved on the lifting screw rod;

[0024] a lifting mounting plate fixedly arranged on the lifting nut, and the movable wheel is rotatably arranged on the lifting mounting plate.

[0025] Further, the lifting screw rod is connected with a hand wheel or a driving motor.

[0026] Further, the lifting mounting plate and the second vertical plate are further provided with a stable sliding rail and a stable sliding block matched with each other, and the stable sliding rail is arranged in parallel with the lifting screw rod.

[0027] The beneficial technical effects of the utility model are as follows: the independent detection device is added to realize online detection of the cold heading wire and automatic separation of the defective material product while the pressure sensor of the cold heading equipment is not excited by the tiny defect of the material; the frequent shutdown, incomplete cleaning, inoperability, quality risk and low efficiency caused by setting the sensitivity of the pressure sensor too high are avoided; full-automatic online detection and sorting at a speed of 500 / min are realized; the defect in the range of 0.2x0.2x0.1 on the surface of the material is identified; the high-speed cold heading production is realized while the sorting cost of the material surface and near-surface defective product is greatly reduced.

[0028] The online detection mechanism is added to the feeding port of the cold heading equipment, the pushing cylinder independently arranged at the discharging port of the cold heading equipment is controlled through the PLC, the surface and near-surface defect of the wire is identified, and the defective product is separated and screened; the cold heading piece of the cold heading process online detection raw material and automatic separation of the defective material production is realized under the setting of reducing the sensitivity of the pressure sensor of the cold heading equipment. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a whole schematic view of the detection and separation device of the online raw material surface defect of the cold heading.

[0030] Figure 2 It is a schematic view of the straightening mechanism.

[0031] Figure 3 is the working schematic view of the straightening mechanism.

[0032] Figure 4 is the schematic view of the detection mechanism.

[0033] Figure 5 is the sectional view of the detection mechanism.

[0034] Figure 6 is the working principle diagram of the detection mechanism.

[0035] wherein:

[0036] 1, rack, 11, workbench,

[0037] 2, straightening mechanism, 21, straightening frame, 211, horizontal plate, 212, first vertical plate, 213, second vertical plate, 22, fixed wheel, 23, movable wheel, 24, vertical lifting assembly, 241, lifting screw, 242, lifting nut, 243, lifting mounting plate, 244, hand wheel, 245, stabilizing slide rail, 246, stabilizing slide block,

[0038] 3, detection mechanism, 31, detection frame, 32, detection channel, 33, detection probe, 34, detection instrument, 35, control center, 36, display screen, 37, PLC controller, 38, pushing cylinder. DETAILED DESCRIPTION

[0039] In order to make the technical means of the utility model more clearly understood, and can be implemented according to the content of the specification, the specific embodiment of the utility model is further described in detail below, the following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0040] Referring to the cold heading online raw material surface defect detection and separation device shown in the drawings, comprising: Figures 1-6 Rack 1, workbench 11 is arranged on rack 1;

[0041] Straightening mechanism 2, straightening mechanism 2 is arranged on workbench 11, and straightening mechanism 2 carries out the conveying and straightening of wire rod;

[0042] Cold header, the feed inlet of the cold header inputs the wire rod and carries out processing;And

[0043]

[0044] ​The detection mechanism 3 is arranged on the workbench 11 and located between the straightening mechanism 2 and the cold header, and comprises a detection frame 31 arranged on the workbench 11, a detection channel 32 arranged in the detection frame 31, and a detection probe 33 arranged in the detection channel 32. The detection probe 33 is connected to a detector 34 through a wire, and the detector 34 comprises a control center 35 with built-in software and a display screen 36 connected to the control center 35.

[0045] Further, the detection probe 33 is an eddy current probe. Through the arrangement of the eddy current probe, online nondestructive testing is facilitated.

[0046] Further, the detection probe 33 is a through-type probe, and the through direction of the through-type probe is coaxially arranged with the detection channel 32. The detection is smooth and convenient. The through-type probe has a frequency range of 64Hz-2MHz, a gain of 0-48db, a step distance of 0.5db, a phase of 0-360 degrees, and a step distance of 1 degree. The configuration can realize full-automatic online detection of the surface and near-surface crack defects of the raw material within the speed of 500 / min of the cold header and separation of the cold header.

[0047] Further, the detection mechanism 3 is also connected to a PLC controller 37, the PLC controller 37 is connected to a pushing cylinder 38, the pushing cylinder 38 is located at the discharge port of the cold header, and the working end of the pushing cylinder 38 faces the discharge port of the cold header. When the detection is a defective product or a defective product, the pushing cylinder 38 is used to remove it. The stability of the material in the subsequent processing process is ensured, and the continuous operation does not exist the problem of temporary shutdown.

[0048] Further, the straightening mechanism 2 is arranged in at least two groups, and the at least two groups of straightening mechanisms 2 comprise at least two straightening directions.

[0049] Further, the straightening mechanism 2 comprises:

[0050] The straightening frame 21 is arranged on the workbench 11;

[0051] The fixed wheel 22 is rotatably arranged on the straightening frame 21;

[0052] The movable wheel 23 is arranged on the straightening frame 21 through the vertical lifting assembly 24, and the movable wheel 23 and the fixed wheel 22 are located on the two sides of the wire respectively.

[0053] Further, the fixed wheel 22 is arranged in three, the movable wheel 23 is arranged in two, and they are arranged in sequence. The wire can be stably straightened.

[0054] Further, the straightening frame 21 comprises a horizontal plate 211, a first vertical plate 212 and a second vertical plate 213 are arranged on the horizontal plate 211 respectively, the fixed wheel 22 is arranged on the first vertical plate 212, and the vertical lifting assembly 24 is arranged on the second vertical plate 213. Through the simple structure design, the fixed wheel 22 and the movable wheel 23 are cooperatively arranged.

[0055] Further, the vertical lifting assembly 24 comprises:

[0056] a lifting screw 241 arranged in parallel with the second vertical plate 213;

[0057] a lifting nut 242 sleeved on the lifting screw 241;

[0058] a lifting mounting plate 243 fixedly arranged on the lifting nut 242, and the movable wheel 23 is rotatably arranged on the lifting mounting plate 243.

[0059] Further, the lifting screw 241 is connected with a hand wheel 244 or a driving motor. In the present application, in order to reduce the cost, the hand wheel 244 is used for driving.

[0060] Further, the lifting mounting plate 243 and the second vertical plate 213 are further provided with a stable sliding rail 245 and a stable sliding block 246 matched with each other, and the stable sliding rail 245 is arranged in parallel with the lifting screw 241. The stability of the movable wheel 23 during movement is ensured.

[0061] The beneficial technical effects of the present application are as follows: the independent detection device is added to realize the online detection of the cold heading wire and the automatic separation of the defective material products while the pressure sensor of the cold heading equipment is not excited by the small defects of the material. The frequent shutdown, incomplete cleaning, inability to operate, quality risk and low efficiency caused by the high sensitivity of the pressure sensor are avoided. The full-automatic online detection and sorting at the speed of 500 / min are realized, the defects in the range of 0.2x0.2x0.1 on the surface of the material are identified, the high-speed cold heading production is realized, and the sorting cost of the material surface and near-surface defective products is greatly reduced.

[0062] The online detection mechanism 3 is added at the feeding port of the cold heading equipment, the pushing cylinder 38 independently arranged at the discharging port of the cold heading equipment is controlled by the PLC, the surface and near-surface defects of the wire are identified, and the defective products are separated and screened. For the small defects of the material, the sensitivity of the pressure sensor of the cold heading equipment is reduced, the cold heading process online detection raw material and the automatic separation of the defective material production of the cold heading part are realized.

[0063] Generally, in the cold upsetting process, the wire is straightened by transverse straightening and longitudinal straightening device, and then enters the wire feeding mechanism and cutting structure of the cold upsetting equipment to cut the length of the material required for the product, and then the production of the cold upsetting product is completed through the corresponding die and pressure.

[0064] The detection principle is that by setting the parameters in the flaw detection software, in the alternating magnetic field environment of the saturator, the wire generates electromagnetic induction effect when passing through the probe, and eddy current is established in the wire. The eddy current in the probe conductor also generates its own magnetic field, and the action of the eddy current magnetic field changes the strength of the original magnetic field, thereby causing the change of voltage and resistance. When defects appear on the surface and near-surface of the wire, the strength and distribution of the eddy current will be affected, the change of the eddy current causes the change of the resistance and impedance of the detection coil, and through the probe, signal control and PLC, the signal image is transmitted to the display screen at the same time, and the alarm sounds. Combined with the length of the material required for the product and the running speed of the equipment, the opening time and closing time of the turnover plate installed at the discharge port of the cold upsetting equipment are preset, so as to realize the on-line detection of the raw material of the cold upsetting process and the automatic separation of the defective material to produce the cold upsetting piece.

[0065] The above is only the preferred embodiment of the present application, and is not used to limit the present application. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A detection and separation device for surface defects of raw materials in cold heading online, characterized in that, include: A frame (1) is provided on which a worktable (11) is provided; A straightening mechanism (2) is provided on a workbench (11) for conveying and straightening wires. A cold heading machine, wherein the wire is fed into the inlet and processed; and The testing mechanism (3) is set on the workbench (11) and is located between the straightening mechanism (2) and the cold heading machine. The testing mechanism (3) includes: a testing frame (31) set on the workbench (11), a testing channel (32) set in the testing frame (31), a testing probe (33) set in the testing channel (32), and the testing probe (33) connected to the detector (34) by a wire. The detector (34) includes a control center (35) with built-in software and a display screen (36). The display screen (36) is connected to the control center (35).

2. The online detection and separation device for surface defects of raw materials in cold heading according to claim 1, characterized in that: The detection probe (33) is an eddy current probe.

3. The detection and separation device for surface defects of raw materials in cold heading according to claim 1, characterized in that: The detection probe (33) is a through-type probe, and the through-type probe is coaxial with the detection channel (32).

4. The online detection and separation device for surface defects of raw materials in cold heading according to claim 1, characterized in that: The detection mechanism (3) is also connected to a PLC controller (37), which is connected to a pusher cylinder (38). The pusher cylinder (38) is located at the outlet of the cold heading machine, and the working end of the pusher cylinder (38) faces the outlet of the cold heading machine.

5. The online detection and separation device for surface defects of raw materials in cold heading according to claim 1, characterized in that: The straightening mechanism (2) is provided in at least two sets, and the at least two sets of straightening mechanisms (2) include at least two straightening directions.

6. The online detection and separation device for surface defects of raw materials in cold heading according to claim 1, characterized in that: The straightening mechanism (2) includes: A straightening frame (21) is provided on a workbench (11); A fixed wheel (22) is rotatably mounted on the straightening frame (21); The movable wheel (23) is mounted on the straightening frame (21) via a vertical lifting assembly (24), and the movable wheel (23) and the fixed wheel (22) are located on both sides of the wire.

7. The online detection and separation device for surface defects of raw materials in cold heading according to claim 6, characterized in that: Three fixed wheels (22) are provided, and two movable wheels (23) are provided, arranged alternately in sequence.

8. The online detection and separation device for surface defects of raw materials in cold heading according to claim 6, characterized in that: The straightening frame (21) includes a horizontal plate (211), on which a first vertical plate (212) and a second vertical plate (213) are respectively arranged. The fixed wheel (22) is arranged on the first vertical plate (212), and the vertical lifting assembly (24) is arranged on the second vertical plate (213).

9. The online detection and separation device for surface defects of raw materials in cold heading according to claim 6, characterized in that: The vertical lifting assembly (24) includes: A lifting screw (241) is arranged parallel to the second vertical plate (213); A lifting nut (242) is sleeved on a lifting screw (241); A lifting mounting plate (243) is fixedly mounted on a lifting nut (242), and a movable wheel (23) is rotatably mounted on the lifting mounting plate (243).

10. The online detection and separation device for surface defects of raw materials in cold heading according to claim 9, characterized in that: A stabilizing slide rail (245) and a stabilizing slider (246) are also provided between the lifting mounting plate (243) and the second vertical plate (213), and the stabilizing slide rail (245) is arranged parallel to the lifting screw (241).

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