Detection method and detection system for shearing process of double-side shear and double-side shear system

Abstract

The invention relates to the technical field of shearing, and discloses a method and system for detecting the shearing process of a pair of double-side shears and a double-side shear system. The detection system comprises a first collecting device, a second collecting device and a third collecting device, wherein the first collecting device is used for collecting edge waste sheared by the fixed side of the double-side shear device; the second collecting device is used for collecting edge waste sheared by the moving side of the double-side shear device; the first weighing device is used for weighing the edge waste collected by the first collecting device to obtain a first weight; the second weighing device is used for weighing the edge waste collected by the second collecting device to obtain a second weight; and the controller is used for judging whether the plate which is being sheared by the double-side shear device is inclined or not according to the first weight and the second weight. The automation degree of steel plate shearing production of the double-side shears can be improved, the production rhythm is accelerated, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of shearing technology, and in particular to a detection method and a detection system for a double-sided shearing process, and a double-sided shearing system. Background Art

[0002] The double-sided shearing device is an important equipment on the medium and thick plate production line. Its function is to cut off the irregular edges on both sides of the rolled steel plate according to the order requirements to form the final width size that meets the order delivery, such as Figure 1A shown.

[0003] The main equipment components of the double side shear device include: inlet pinch roller, double side shear, scrap edge shear, outlet pinch roller, waste chute, waste belt, waste collection basket, etc.

[0004] The entrance pinch roller and the exit pinch roller are used to clamp the steel plate and convey it forward; the double-sided shear is used to complete the edge cutting of the steel plate; the scrap edge shear is used to cut the continuous edge cut by the double-sided shear; the scrap edges after cutting on both sides fall along the scrap chute onto the same scrap belt, and are transported to the same scrap collection basket through the scrap belt for collection (such as Figure 2 After the waste collection basket collects the waste, it is lifted away by an overhead crane.

[0005] In the process of shearing the edge of the steel plate by the double-sided shear, the steel plate is conveyed forward by conveying equipment such as pinch rollers and roller tables. The conveying direction of the steel plate is strictly parallel to the length direction of the shear blade. Figure 1B shown.

[0006] During the production process, the steel plate often deviates to one side during the forward conveying process due to factors such as the state of the conveying equipment. Figure 1C Under normal production conditions, when the deflection is small, the sheared steel plate can still meet the order requirements; but when the deflection is large, the trimming process cannot be completed or the steel plate after trimming may not meet the order requirements, reducing the yield rate of the production line. In severe cases, the head of the steel plate may collide with the equipment, resulting in production interruption.

[0007] Therefore, using appropriate methods to detect the deflection (deviation) of the steel plate during the shearing and conveying process and judge the status of the double-sided shearing equipment is an important means to ensure the normal operation of the double-sided shearing production process and improve the yield rate.

[0008] The traditional detection method is manual visual inspection. If people are deployed on the production line for visual inspection, the environment is very harsh, the labor intensity is high, and it is highly dependent on the state and experience of the person; if the judgment is made in the operation room by watching the on-site monitoring, the labor intensity is reduced, but the judgment error will increase when facing the monitor.

[0009] To this end, machine vision is used to collect the position of the steel plate relative to the roller in real time to determine whether the steel plate has deviated during the shearing process. This method does not rely on human intervention, but machine vision has high requirements on the environment. When the steel plate is relatively long, multiple cameras need to be deployed. The system is complex and it is difficult to meet the requirements of continuous and stable production of the production line. Summary of the invention

[0010] The purpose of the present invention is to provide a detection method and detection system for the double-sided shearing process, and a double-sided shearing system, which can improve the degree of automation of double-sided shearing production of steel plates, speed up production rhythm, and improve production efficiency.

[0011] In order to achieve the above-mentioned purpose, the present invention provides, on the one hand, a detection system for a double-sided shearing device, the detection system comprising: a first collecting device, used to collect edge waste cut off by the fixed side of the double-sided shearing device; a second collecting device, used to collect edge waste cut off by the moving side of the double-sided shearing device; a first weighing device, used to weigh the edge waste collected by the first collecting device to obtain a first weight; a second weighing device, used to weigh the edge waste collected by the second collecting device to obtain a second weight; and a controller, used to determine whether the board being sheared by the double-sided shearing device is skewed based on the first weight and the second weight.

[0012] Preferably, the controller is used to determine whether the steel plate being sheared by the double-sided shearing device is skewed based on the first weight and the second weight, including: when the difference between the first weight and the second weight is within a preset range, determining that the plate being sheared by the double-sided shearing device is not skewed; or when the difference between the first weight and the second weight is not within the preset range, determining that the plate being sheared by the double-sided shearing device is skewed.

[0013] Preferably, the controller is also used to: determine that the board is moving toward the fixed side when the difference between the first weight and the second weight is not within the preset range and the first weight is greater than the second weight; or determine that the board is moving toward the movable side when the difference between the first weight and the second weight is not within the preset range and the first weight is less than the second weight.

[0014] Preferably, the controller is also used to perform: when the first weight is greater than the second weight, adjusting the conveying direction of the board to control the board to move toward the movable side until the difference between the first weight and the second weight is back within the preset range; or when the first weight is less than the second weight, adjusting the conveying direction of the board to control the board to move toward the fixed side until the difference between the first weight and the second weight is back within the preset range.

[0015] Preferably, the first collecting device includes: a first collecting basket; and a first belt for transferring the edge waste cut off by the fixed side of the double-sided shearing device to the first collecting basket, and the second collecting device includes: a second collecting basket; and a second belt for transferring the edge waste cut off by the moving side of the double-sided shearing device to the second collecting basket.

[0016] Preferably, the first weighing device is arranged at the bottom of the first collecting basket; and the second weighing device is arranged at the bottom of the second collecting basket.

[0017] Preferably, the first weighing device and the second weighing device are weighing sensors.

[0018] Preferably, the plate is a steel plate.

[0019] Through the above technical scheme, the present invention creatively collects the edge waste cut off by the fixed side and the mobile side of the double-sided shearing device through two independent collecting devices; then the edge waste on both sides is weighed respectively by the weighing devices on both sides; finally, according to the weighing results on both sides, it is determined whether the plate being sheared by the double-sided shearing device is skewed. Therefore, the present invention can not only reduce the labor intensity of production workers and protect the health of workers from harsh working conditions, but also avoid the arrangement of machine vision on the production line, reduce maintenance workload, improve system stability, and reduce the impact on the production process, thereby improving the automation level of steel plate shearing production by double-sided shearing, accelerating the production rhythm, and improving production efficiency.

[0020] A second aspect of the present invention provides a detection method for a double-sided shearing device, the detection method comprising: collecting edge waste cut off by the fixed side of the double-sided shearing device by a first collecting device; collecting edge waste cut off by the moving side of the double-sided shearing device by a second collecting device; weighing the edge waste collected by the first collecting device to obtain a first weight; weighing the edge waste collected by the second collecting device to obtain a second weight; and determining whether the board being sheared by the double-sided shearing device is skewed based on the first weight and the second weight.

[0021] For specific details and benefits of the detection method for a double-sided shearing device provided by an embodiment of the present invention, please refer to the above description of the detection system for a double-sided shearing device, which will not be repeated here.

[0022] A third aspect of the present invention provides a double-sided shearing system, which includes: a double-sided shearing device; and the detection system for the double-sided shearing device.

[0023] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0025] Figure 1A This is a schematic diagram of steel plate shearing under ideal conditions obtained by the double-sided shearing device;

[0026] Figure 1B This is a schematic diagram of the steel plate conveying direction under the ideal state obtained by the double-sided shearing device;

[0027] Figure 1C It is a schematic diagram of the conveying direction of the steel plate obtained by the double-sided shearing device when the steel plate is deviated;

[0028] Figure 2 It is a structural schematic diagram of an existing double-sided shearing device;

[0029] Figure 3 It is a structural schematic diagram of a detection system for a double-sided shearing device provided by an embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of a detection system for a double-sided shearing device provided by an embodiment of the present invention; and

[0031] Figure 5 It is a flow chart of a detection process for a double-sided shearing device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0033] Figure 3 FIG. 1 is a schematic diagram of the structure of a detection system for a double-sided shearing device provided by an embodiment of the present invention. Figure 3As shown, the detection system includes: a first collecting device 10, used to collect the edge waste cut off by the fixed side of the double-sided shearing device; a second collecting device 20, used to collect the edge waste cut off by the moving side of the double-sided shearing device; a first weighing device 30, used to weigh the edge waste collected by the first collecting device 10 to obtain a first weight; a second weighing device 40, used to weigh the edge waste collected by the second collecting device 20 to obtain a second weight; and a controller 50, used to determine whether the board being sheared by the double-sided shearing device is skewed based on the first weight and the second weight.

[0034] The plate may be a steel plate, or other plates with greater hardness and strength.

[0035] Taking steel plates as an example, the edge scraps cut off from the fixed side and the moving side of the steel plate during shearing are collected separately; the steel plates collected independently on both sides are weighed in real time during or after the steel plate shearing process; because the steel plates are centered before shearing, the operator will ensure that the edge margins on both sides are as consistent as possible. If the steel plate does not deviate during the shearing process, the weighing values ​​on both sides tend to be consistent; if deviate occurs, the weighing values ​​on both sides will be different, and the weighing value on the side where the steel plate deviates will be significantly higher than the other side. The operator or the system determines the state of the double-sided shear based on the difference in the weighing values ​​on both sides to determine whether it will cause the steel plate to deviate during the shearing process.

[0036] like Figure 4 As shown, the first collecting device 10 includes: a first collecting basket 12; and a first belt 14 for conveying the edge waste cut off by the fixed side of the double-sided shearing device to the first collecting basket 12.

[0037] like Figure 4 As shown, the second collecting device 20 includes: a second collecting basket 22; and a second belt 24, which is used to transfer the edge waste cut off by the moving side of the double-sided shearing device to the second collecting basket 22.

[0038] like Figure 4 As shown, the detection system further comprises: a first chute 16 and a second chute 26. The waste edges after being cut on both sides fall onto two independent belts along the two chutes respectively.

[0039] like Figure 4 As shown, the first weighing device 30 is disposed at the bottom of the first collecting basket 12 ; and the second weighing device 40 is disposed at the bottom of the second collecting basket 22 .

[0040] The first weighing device 30 and the second weighing device 40 are weighing sensors.

[0041] In one embodiment, the controller 50 is used to determine whether the steel plate being sheared by the double-sided shearing device is skewed based on the first weight and the second weight, including: when the difference between the first weight and the second weight is within a preset range, determining that the plate being sheared by the double-sided shearing device is not skewed; or when the difference between the first weight and the second weight is not within the preset range, determining that the plate being sheared by the double-sided shearing device is skewed.

[0042] The preset range can be reasonably set according to the actual situation. For example, if the shearing accuracy is not high, the preset range can be set to a larger range; and if the shearing accuracy is high, the preset range can be set to a smaller range. For example, the preset range is [-A, A], where A can be set according to the actual situation.

[0043] by Figure 4 Taking the detection system shown as an example, the weight of the waste in the first collection basket 12 and the second collection basket 22 is compared. If the difference between the weight of the waste in the first collection basket 12 and the weight of the waste in the second collection basket 22 does not fall within the preset range, it indicates that the steel plate has deviated to one side but it is unclear which side it has deviated to; if the difference between the weight of the waste in the first collection basket 12 and the weight of the waste in the second collection basket 22 falls within the preset range, it indicates that the waste at the edge of the steel plate cut off on the fixed side is substantially the same as the waste at the edge of the steel plate cut off on the moving side, indicating that the steel plate has not deviated during the shearing process.

[0044] Furthermore, in order to correct the deviation in time, in this embodiment, the deviation can be determined by judging which side has a significantly larger weight of the waste.

[0045] In one embodiment, the controller 50 is further used to: determine that the board is moving toward the fixed side when the difference between the first weight and the second weight is not within the preset range and the first weight is greater than the second weight; or determine that the board is moving toward the movable side when the difference between the first weight and the second weight is not within the preset range and the first weight is less than the second weight.

[0046] by Figure 4Taking the detection system shown as an example, the weight of the waste in the first collection basket 12 and the second collection basket 22 are compared. If the weight of the waste in the first collection basket 12 is greater than the weight of the waste in the second collection basket 22, and the difference between the two does not fall within the preset range, it indicates that the waste at the edge of the steel plate cut off on the fixed side is significantly greater than the waste at the edge of the steel plate on the mobile side, indicating that the steel plate is biased toward the fixed side during the shearing process; if the weight of the waste in the second collection basket 22 is greater than the weight of the waste in the first collection basket 12, and the difference between the two does not fall within the preset range, it indicates that the waste at the edge of the steel plate cut off on the fixed side is significantly less than the waste at the edge of the steel plate on the mobile side, indicating that the steel plate is biased toward the mobile side during the shearing process.

[0047] In response to the above-mentioned determination result that the board is deflected, in this embodiment, the conveying direction of the board is adjusted by the controller to promptly return the board to the ideal conveying direction without deflection.

[0048] The controller 50 is also used to perform: when the first weight is greater than the second weight, adjusting the conveying direction of the board to control the board to move toward the movable side until the difference between the first weight and the second weight is back within the preset range; or when the first weight is less than the second weight, adjusting the conveying direction of the board to control the board to move toward the fixed side until the difference between the first weight and the second weight is back within the preset range.

[0049] Among them, the specific process of the controller adjusting the conveying direction of the board is not an improvement point of the present invention, and can be carried out according to various existing methods, and it will not be described in detail here. That is to say, when it is determined that the board is deviating to one side, the conveying direction of the board is adjusted to the other side by the controller to control the weight difference between the two sides to fall within the preset range (that is, indicating that the edge waste of the steel plate cut off on the fixed side is basically the same as the edge waste of the steel plate on the moving side), which indicates that the board is no longer deviating. Therefore, this embodiment can make timely adjustments to the state of the double-sided shearing equipment.

[0050] To sum up, the present invention creatively collects the edge waste cut off by the fixed side and the mobile side of the double-sided shearing device through two independent collecting devices; then weighs the edge waste on both sides respectively through the weighing devices on both sides; finally, according to the weighing results on both sides, it is determined whether the plate being sheared by the double-sided shearing device is skewed. Therefore, the present invention can not only reduce the labor intensity of production workers and protect the health of workers from harsh working conditions, but also avoid the arrangement of machine vision on the production line, reduce maintenance workload, improve system stability, and reduce the impact on the production process, thereby improving the automation level of double-sided shearing for steel plate shearing production, accelerating production rhythm, and improving production efficiency.

[0051] An embodiment of the present invention also provides a detection method for a double-sided shearing device, the detection method comprising: collecting edge waste cut off by the fixed side of the double-sided shearing device by a first collecting device; collecting edge waste cut off by the moving side of the double-sided shearing device by a second collecting device; weighing the edge waste collected by the first collecting device to obtain a first weight; weighing the edge waste collected by the second collecting device to obtain a second weight; and determining whether the board being sheared by the double-sided shearing device is skewed based on the first weight and the second weight.

[0052] Specifically, Figure 4 The inspection process of the steel plate shearing process is introduced by taking the inspection system shown as an example.

[0053] (1) Two independent waste belts (such as the first belt 14 and the second belt 24) and collection baskets (such as the first collection basket 12 and the second collection basket 22) are provided. The waste cut off from the fixed side is transported to the first collection basket 12 via the first belt 14; the waste cut off from the mobile side is transported to the second collection basket 22 via the second belt 24. In other words, the steps of collecting waste from the fixed side and collecting waste from the mobile side are performed, such as Figure 5 shown.

[0054] (2) Weighing sensors are respectively arranged at the bottom of the first collection basket 12 and the second collection basket 22 to measure the weight of the first collection basket 12 and the second collection basket 22 and the waste therein, and calculate the weight of the waste in the collection basket (of course, the weight of the collection basket itself is known, and the total weight of the collection basket and the waste can be subtracted from the weight of the collection basket itself. Since the technicians in this field are very clear about the process, they will not be described in detail here). That is to say, the steps of weighing the waste on the fixed side and weighing the waste on the mobile side are performed, such as Figure 5 shown.

[0055] (3) Compare the weights of the waste in the first collection basket 12 and the second collection basket 22. Determine whether the difference between the weight of the waste in the first collection basket 12 and the weight of the waste in the second collection basket 22 is beyond the preset range. If so, it indicates that the waste on one side is significantly more than the other side, and the steel plate deviates to one side during the shearing process, and a deviation alarm is executed; otherwise, it indicates that the waste on both sides is basically the same, and the steel plate does not deviate during the shearing process (that is, the steel plate runs normally). Figure 5 shown.

[0056] More specifically, if the weight of the waste in the first collecting basket 12 is greater than the weight of the waste in the second collecting basket 22, and the difference between the two exceeds the set threshold, it indicates that the waste at the edge of the steel plate cut off on the fixed side is significantly greater than the waste at the edge of the steel plate on the moving side, indicating that the steel plate is biased toward the fixed side during the shearing process; if the weight of the waste in the second collecting basket 22 is greater than the weight of the waste in the first collecting basket 12, and the difference between the two exceeds the set threshold, it indicates that the waste at the edge of the steel plate cut off on the fixed side is significantly less than the waste at the edge of the steel plate on the moving side, indicating that the steel plate is biased toward the moving side during the shearing process.

[0057] (4) The operator or the system determines the state of the double-sided shear based on the difference in the weighing values ​​on both sides to determine whether it will cause the steel plate to deviate during the shearing process, and then adjusts the state of the double-sided shear equipment.

[0058] This embodiment obtains the symmetry of the shearing process of the steel plate by the double-sided shear by weighing the edge waste generated by the steel plate during the shearing process, thereby determining whether the steel plate deviates during the shearing process.

[0059] For specific details and benefits of the detection method for a double-sided shearing device provided by an embodiment of the present invention, please refer to the above description of the detection system for a double-sided shearing device, which will not be repeated here.

[0060] An embodiment of the present invention provides a double-sided shearing system, which includes: a double-sided shearing device; and the detection system for the double-sided shearing device.

[0061] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0062] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0063] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a single-chip microcomputer, a chip or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0064] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0065] The present application is described with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, and the combination of the process and / or box in the flowchart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0066] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A detection system for a double-sided shearing device, characterized in that: The detection system comprises: A first collecting device, used for collecting edge waste cut off by the fixed side of the double-sided shearing device; A second collecting device, used for collecting the edge waste cut off by the moving side of the double-sided shearing device; A first weighing device, used for weighing the edge waste collected by the first collecting device to obtain a first weight; A second weighing device, used for weighing the edge waste collected by the second collecting device to obtain a second weight; and The controller is used to determine whether the board being sheared by the double-sided shearing device is skewed according to the first weight and the second weight.

2. The detection system according to claim 1, characterized in that: The controller is used to determine whether the steel plate being sheared by the double-sided shearing device is skewed according to the first weight and the second weight, including: When the difference between the first weight and the second weight is within a preset range, it is determined that the board being sheared by the double-sided shearing device is not deflected; or When the difference between the first weight and the second weight is not within the preset range, it is determined that the board being sheared by the double-sided shearing device is skewed.

3. The detection system according to claim 2, characterized in that: The controller is also used for: When the difference between the first weight and the second weight is not within the preset range and the first weight is greater than the second weight, determining that the board moves toward the fixed side; or When the difference between the first weight and the second weight is not within the preset range and the first weight is less than the second weight, it is determined that the board moves toward the moving side.

4. The detection system according to claim 3, characterized in that: The controller is also used to execute: When the first weight is greater than the second weight, adjusting the conveying direction of the board to control the board to move toward the moving side until the difference between the first weight and the second weight is within the preset range again; or In the case where the first weight is less than the second weight, the conveying direction of the board is adjusted to control the board to move toward the fixed side until the difference between the first weight and the second weight is within the preset range again.

5. The detection system according to claim 1, characterized in that: The first collecting device comprises: a first collecting basket; and a first belt for conveying the edge waste cut off by the fixed side of the double-sided shearing device to the first collecting basket. The second collecting device comprises: a second collecting basket; and a second belt for conveying the edge waste cut off by the moving side of the double-sided shearing device to the second collecting basket.

6. The detection system according to claim 5, characterized in that: The first weighing device is arranged at the bottom of the first collecting basket; the second weighing device is arranged at the bottom of the second collecting basket.

7. The detection system according to claim 1, characterized in that: The first weighing device and the second weighing device are weighing sensors.

8. The detection system according to any one of claims 1 to 7, characterized in that: The plate is a steel plate.

9. A detection method for a double-sided shearing device, characterized in that: The detection method comprises: The first collecting device collects the edge waste cut off by the fixed side of the double-sided shearing device; The second collecting device collects the edge waste cut off by the moving side of the double-sided shearing device; Weighing the edge waste collected by the first collecting device to obtain a first weight; Weighing the edge waste collected by the second collecting device to obtain a second weight; and According to the first weight and the second weight, it is determined whether the board being sheared by the double-sided shearing device is skewed.

10. A double-sided shearing system, characterized in that: The double-sided shear system comprises: Double shearing device; and A detection system for a double-sided shearing device according to any one of claims 1 to 8.

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