Steel bar butt welding head online detection device and online detection method

Abstract

The invention belongs to the technical field of reinforcing steel bar manufacturing, and discloses a reinforcing steel bar butt welding head on-line detection device and an on-line detection method.The reinforcing steel bar butt welding head on-line detection device comprises a conductive assembly, a power source and a monitoring piece, and the conductive assembly comprises a first conductive piece and a second conductive piece; the first conductive part and the second conductive part are arranged in a spaced mode in the conveying direction of the reinforcing steel bars, can make contact with the reinforcing steel bars and are both conductors; the anode of the power supply is connected with one of the first conductive part and the second conductive part, and the cathode of the power supply is connected with the other one of the first conductive part and the second conductive part; the monitoring part is connected to a circuit where the conductive assembly is connected with the power supply and used for identifying whether the circuit is conducted or not; the on-line detection method is implemented based on the on-line detection device for the steel bar butt welding head and is used for detecting the position of the butt welding head on line, the positioning can not be influenced by the environment, and the positioning of the position of the butt welding head is more accurate.

Description

Technical Field

[0001] This invention relates to the field of steel bar manufacturing technology, and in particular to an online detection device and method for steel bar butt weld joints. Background Technology

[0002] In high-speed straightening of reinforcing bars, in order to achieve continuous straightening and improve straightening efficiency, the raw material coil can be butt-welded for straightening. The performance of the butt joint of the butt-welded reinforcing bar is different from that of the reinforcing bar itself, and its performance is not very stable. The above-mentioned reinforcing bars have potential dangers. For the above reasons, after the reinforcing bars are straightened and cut, the reinforcing bar segments with butt joints need to be removed. However, due to the high production speed of the production line, it is difficult to detect manually without stopping the machine.

[0003] Due to the difficulty in detecting problems manually, visual inspection using vision cameras is often used in related technologies. However, visual inspection has high environmental requirements. Because of the dusty production environment in factories, visual inspection often suffers from poor online detection results. Summary of the Invention

[0004] The purpose of this invention is to provide an online detection device and method for steel bar weld joints, in order to solve the problem of poor detection effect of weld joints under poor environmental conditions.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An online detection device for butt weld joints of reinforcing bars is used to detect the position of the butt weld joints of reinforcing bars online. The butt weld joint of the reinforcing bar can include a covering insulating ring. The online detection device for butt weld joints of reinforcing bars includes:

[0007] A conductive component includes a first conductive element and a second conductive element. The first conductive element and the second conductive element are spaced apart along the conveying direction of the reinforcing bar. The first conductive element and the second conductive element are capable of contacting the reinforcing bar. Both the first conductive element and the second conductive element are conductors. The first conductive element and the second conductive element are insulated from each other.

[0008] A power source, wherein the positive terminal of the power source is connected to one of the first conductive element and the second conductive element, and the negative terminal of the power source is connected to the other of the first conductive element and the second conductive element;

[0009] A monitoring device is connected to the circuit where the conductive component is connected to the power supply to identify whether the circuit is conducting.

[0010] In some embodiments, the online detection device for rebar butt welds further includes a frame, on which the first conductive element and / or the second conductive element are disposed and insulated from the frame.

[0011] In some embodiments, a plurality of first conductive elements are provided, and the plurality of first conductive elements are distributed at intervals along the horizontal direction of the frame and staggered along the height direction of the frame, so as to be able to clamp the reinforcing bar between the first conductive elements.

[0012] In some embodiments, the conductive component includes an insulating plate fixed to the frame, and the first conductive element is disposed on the insulating plate.

[0013] In some embodiments, the first conductive element includes a wheel seat and a wheel body. The wheel seat is disposed on the insulating plate, and the wheel body rotates on the wheel seat. Both the wheel seat and the wheel body are conductive, and the power source is connected to the wheel seat through a wire.

[0014] In some embodiments, the wheel body is a V-shaped wheel or a U-shaped wheel.

[0015] In some embodiments, the voltage of the power supply is 5V-36V.

[0016] An online detection method is also provided, implemented based on the online detection device for rebar weld joints as described above, characterized in that the online detection method includes the following steps:

[0017] An insulating ring is wrapped around the outside of the welding head;

[0018] The conductive component conveys the reinforcing steel;

[0019] When the monitoring device detects that the circuit is disconnected, the welding head is located at the second conductive element or the first conductive element.

[0020] The beneficial effects of this invention are:

[0021] When the above-mentioned device is used, an insulating ring can be wrapped or fitted around the butt joint of the reinforcing bar. When the reinforcing bar with the butt joint is conveyed on the first and second conductive components, since both the first and second conductive components are conductors, the power supply, the reinforcing bar, the first conductive component, and the second conductive component can form a complete circuit. However, when the insulating ring contacts the first or second conductive component, the reinforcing bar is isolated from the first or second conductive component by the insulating ring, and a circuit cannot be formed. This allows the reinforcing bar to be positioned at the first or second conductive component. The positioning is not affected by the environment, making the position of the butt joint more accurate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the online detection device for steel bar butt welds of the present invention;

[0023] Figure 2This is a partial cross-sectional view of the online detection device for rebar butt welds of the present invention;

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a flowchart of the online detection method of the present invention.

[0026] In the picture:

[0027] 1. First conductive component; 11. Wheel seat; 12. Wheel body; 2. Second conductive component; 3. Power supply; 4. Wire; 5. Frame; 6. Insulating plate; 7. Insulating sleeve; 71. Insulating collar; 72. Insulating sheet; 8. Reinforcing bar; 9. Insulating ring. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0029] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0032] like Figures 1 to 3 As shown, this application provides an online detection device for butt welds of reinforcing bars 8, used for online detection of the position of the butt welds of reinforcing bars 8. The online detection device for butt welds of reinforcing bars includes a conductive component, a power supply 3, and a monitoring component. The conductive component includes a first conductive element 1 and a second conductive element 2, which are spaced apart along the conveying direction of the reinforcing bars 8. The first conductive element 1 and the second conductive element 2 can contact the reinforcing bars 8, and both the first conductive element 1 and the second conductive element 2 are conductors. The first conductive element 1 and the second conductive element 2 are insulated from each other. The positive terminal of the power supply 3 is connected to one of the first conductive element 1 and the second conductive element 2, and the negative terminal of the power supply 3 is connected to the other of the first conductive element 1 and the second conductive element 2. The monitoring component (not shown in the figure) is connected in the circuit where the conductive component and the power supply 3 are connected to identify whether the circuit is conductive.

[0033] When the above-mentioned device is used, an insulating ring 9 can be wrapped or fitted around the butt joint of the reinforcing bar 8. When the reinforcing bar 8 with the butt joint is conveyed on the first conductive element 1 and the second conductive element 2, since the first conductive element 1 and the second conductive element 2 are both conductors, the power supply 3, the reinforcing bar 8, the first conductive element 1 and the second conductive element 2 can form a complete circuit. However, when the insulating ring 9 contacts the first conductive element 1 or the second conductive element 2, the reinforcing bar 8 and the first conductive element 1 or the reinforcing bar 8 and the second conductive element 2 are isolated by the insulating ring 9 and a circuit cannot be formed. This allows the reinforcing bar 8 to be positioned at the first conductive element 1 or the second conductive element 2 with a butt joint. The positioning can be unaffected by the environment, making the position of the butt joint more accurate.

[0034] In some embodiments, the monitoring device can be a PLC. The PLC can be connected to the first conductive element 1 and / or the second conductive element 2 via a resistor (the specific connection method is a basic common sense of circuits in the prior art and will not be elaborated further). This allows the PLC to pinpoint the location of the welding head by identifying which part of the first conductive element 1 or the second conductive element 2 has not formed a circuit. In the current embodiment, the second conductive element 2 is located upstream of the first conductive element 1, and the PLC is connected to the first conductive element 1. This allows the PLC to determine whether the welding head is located at the first conductive element 1 by checking whether the insulating ring 9 passes through the first conductive element 1.

[0035] In some embodiments, to facilitate the installation of the second conductive element 2 and the first conductive element 1, the online detection device for rebar butt weld joints further includes a frame 5. The first conductive element 1 and / or the second conductive element 2 are disposed on the frame 5 and insulated from the frame 5. In the current embodiment, the first conductive element 1 is disposed on the frame 5, while the second conductive element 2 can be any component used for guiding material or supporting contact in the preceding process, as long as it is properly insulated. It should be noted that the preceding process refers to any process between the butt welding mechanism (used for butt welding rebar) and the aforementioned frame 5. Exemplarily, the voltage of the power supply 3 is 5V-36V, thereby ensuring that the operator is not affected by voltage interference during operation.

[0036] In some embodiments, to improve detection accuracy, multiple first conductive elements 1 are provided on the frame 5. These multiple first conductive elements 1 are spaced apart along the horizontal direction of the frame 5 and staggered along the vertical direction of the frame 5, so that the reinforcing bar 8 is positioned between two adjacent first conductive elements 1. For example, two first conductive elements 1 are provided. The staggered distribution of the two first conductive elements 1 improves the contact efficiency between the reinforcing bar 8 and the first conductive element 1 when the reinforcing bar 8 is not in a straight position, ensuring that at least one of the first conductive elements 1 is in contact, thereby improving the accuracy of detection and positioning.

[0037] In some embodiments, the conductive component further includes an insulating plate 6, which is fixed to the frame 5. The first conductive element 1 is disposed on the insulating plate 6, thereby insulating the first conductive element 1 from the frame 5. Exemplarily, the first conductive element 1 includes a wheel seat 11 and a wheel body 12. The wheel seat 11 is disposed on the insulating plate 6, and the wheel body 12 rotates on the wheel seat 11. The power supply 3 is connected to the wheel seat 11 via a wire 4. Both the wheel seat 11 and the wheel body 12 are conductive, allowing current to be conducted to the wheel body 12 through the wheel seat 11. This reduces the direct connection of the wire 4 to the wheel body 12, preventing the wire 4 from interfering with the rotation of the wheel body 12. The wheel body 12 can be connected to the wheel seat 11 via a bearing. The wheel body 12 can be, but is not limited to, a V-shaped wheel or a U-shaped wheel, further enhancing the wheel body 12's ability to limit the movement of the reinforcing bar 8 and reducing the possibility of the reinforcing bar 8 detaching from the wheel body 12.

[0038] In some embodiments, to facilitate fixing the insulating plate 6, the frame 5 is provided with screw holes, and the insulating plate 6 and the wheel seat 11 are provided with through holes. Bolts are screwed into the screw holes through the through holes, thereby fixing the insulating plate 6 between the frame 5 and the wheel seat 11. To prevent the bolt from conducting current to the frame 5, an insulating sleeve 7 is also fitted on the bolt. The insulating sleeve 7 includes an insulating sheet 72 and an insulating collar 71. The insulating sheet 72 is connected to one end of the insulating collar 71, the insulating collar 71 is fitted onto the bolt post, and the insulating sheet 72 is clamped between the wheel seat 11 and the bolt head, thereby insulating the bolt from the wheel seat 11.

[0039] Because of the presence of the insulating sleeve 7, the wire 4 can be clamped between the insulating sheet 72 and the wheel seat 11, which facilitates the fixing of the wire 4, and the removable insulating sleeve 7 facilitates later maintenance.

[0040] Of course, in other alternative embodiments, the wire 4 may also be connected to the first conductive element 1 by other means such as winding or welding.

[0041] In some embodiments, the second conductive element 2 may, but is not limited to, employ the same mechanism as the first conductive element 1, and the specific details will not be elaborated further.

[0042] like Figure 4 As shown, this application also provides an online detection method based on the above-mentioned online detection device for rebar weld joints, used for online detection of the position of the weld joint. The online detection method includes the following steps:

[0043] An insulating ring 9 is wrapped around the outside of the welding head; this can be done by manually wrapping insulating tape or manually putting on an insulating sleeve 7; it should be noted that the insulating ring 9 needs to cover the welding head.

[0044] The conductive component conveys the reinforcing bar 8, causing the reinforcing bar 8 to pass through the second conductive element 2 and the first conductive element 1 in sequence;

[0045] During this period, power supply 3 needs to be kept powered on continuously;

[0046] In this embodiment, the PLC is connected to the first conductive element 1. When the monitoring device detects a circuit break, it indicates that the insulating ring 9 is located at the first conductive element 1, which means the welding head is located at the first conductive element 1. This allows for online identification of the welding head's position, with the detection process being less affected by environmental conditions and resulting in better detection performance. After detecting the position of the welding head, the PLC can control subsequent processes (such as a counting mechanism) to calculate the conveying distance of the reinforcing bar 8 and, after cutting the reinforcing bar 8, remove the reinforcing bar segment containing the welding head.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An online detection device for butt weld joints of reinforcing bars, used for online detection of the position of the butt weld joints of reinforcing bars (8), wherein the butt weld joints of the reinforcing bars (8) can be covered with an insulating ring (9), characterized in that, The online detection device for rebar butt weld joints includes: A conductive component, comprising a first conductive element (1) and a second conductive element (2), wherein the first conductive element (1) and the second conductive element (2) are spaced apart along the conveying direction of the reinforcing bar (8), and the first conductive element (1) and the second conductive element (2) are capable of contacting the reinforcing bar (8), and both the first conductive element (1) and the second conductive element (2) are conductors; the first conductive element (1) and the second conductive element (2) are insulated from each other; A power supply (3) is provided, with its positive terminal connected to one of the first conductive element (1) and the second conductive element (2), and its negative terminal connected to the other of the first conductive element (1) and the second conductive element (2). A monitoring device is connected to the circuit in which the conductive component is connected to the power supply (3) to identify whether the circuit is conducting.

2. The online detection device for butt weld joints of reinforcing bars according to claim 1, characterized in that, The online detection device for steel bar butt welds also includes a frame (5), on which the first conductive element (1) and / or the second conductive element (2) are disposed and insulated from the frame (5).

3. The online detection device for butt weld joints of reinforcing bars according to claim 2, characterized in that, Multiple first conductive elements (1) are provided, and the multiple first conductive elements (1) are distributed at intervals along the horizontal direction of the frame (5) and staggered along the height direction of the frame (5) so as to clamp the steel bar (8) between the first conductive elements (1).

4. The online detection device for butt weld joints of reinforcing bars according to claim 3, characterized in that, The conductive component includes an insulating plate (6) which is fixed on the frame (5), and the first conductive element (1) is disposed on the insulating plate (6).

5. The online detection device for butt weld joints of reinforcing bars according to claim 4, characterized in that, The first conductive element (1) includes a wheel seat (11) and a wheel body (12). The wheel seat (11) is disposed on the insulating plate (6), and the wheel body (12) rotates on the wheel seat (11). Both the wheel seat (11) and the wheel body (12) are conductive. The power source (3) is connected to the wheel seat (11) through a wire (4).

6. The online detection device for butt weld joints of reinforcing bars according to claim 5, characterized in that, The wheel body (12) is a V-shaped wheel or a U-shaped wheel.

7. The online detection device for butt weld joints of reinforcing bars according to claim 1, characterized in that, The voltage of the power supply (3) is 5V-36V.

8. An online detection method, implemented based on the online detection device for rebar butt welds as described in any one of claims 1-7, characterized in that, The online detection method includes the following steps: An insulating ring (9) is wrapped around the outside of the welding head; The conductive component delivers the reinforcing bar (8); When the monitoring device detects that the circuit is disconnected, the welding head is located at the second conductive element (2) or the first conductive element (1).

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