Correcting mechanism

Abstract

The utility model provides a correction mechanism. The correction mechanism comprises a rack, a distance measuring sensor and a correction assembly, the distance measuring sensor is arranged on the rack or the correction assembly and used for detecting the opening width of a workpiece. The correction assembly is arranged on the rack and used for correcting a workpiece according to a detection signal of the distance measuring sensor; the number of the correcting assemblies is multiple, and the multiple correcting assemblies are sequentially arranged in the length direction of the rack. Compared with the prior art, the correction mechanism provided by the utility model can improve the correction precision and efficiency of the workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial vehicle production, in particular to a correction mechanism. Background Art

[0002] A forklift is an industrial handling vehicle with a fork. It refers to various handling vehicles that load, unload, stack and short-distance transport of palletized goods. Forklifts are widely used in ports, stations, airports, freight yards, factory workshops, warehouses, circulation centers and distribution centers to load, unload and transport palletized goods in cabins, carriages and containers. They are essential equipment for pallet and container transportation.

[0003] The mast is an important part of the forklift, mainly including the inner mast, middle mast and outer mast; the outer mast is fixed on the outermost side, with a lifting cylinder installed on the upper end; the inner mast and middle mast are placed inside the outer mast, and are lifted and lowered by the lifting cylinder, and drive the fork installed on the lower end of the inner mast to lift and lower. In order to ensure that the fork can be lifted and lowered flexibly, smoothly, stably and quickly, it is necessary to ensure that the inner mast can slide freely in the outer mast. Therefore, the opening size accuracy requirements of the outer and inner masts are relatively high.

[0004] The structures of the outer and inner portals are similar, both consisting of two left and right channel steels and corresponding cross beams arranged above the channel steels, and are riveted and welded structural parts.

[0005] The existing portal frame structure usually consists of two channel steels and upper beams, middle beams, and lower beams above the channel steels. The main welding position is at the connection between the channel steel and the beam. This structure is prone to opening outwards under the action of welding stress during welding, causing the portal frame to deform and tend to form an "A" shape. Therefore, the portal frame opening size needs to be corrected after welding.

[0006] In the prior art, the gantry after welding is usually corrected by manual correction or single-point automatic correction. The correction accuracy is poor and the degree of automation is low. It is necessary to manually measure the opening size with a simple measuring tool and then correct the position with large deformation. In addition, the correction method used in the prior art is uncontrollable for the correction result. When correcting a certain point of the gantry, the size of other points will change. For example, when correcting the middle point, the size of the points on both sides will change accordingly, thereby reducing the correction accuracy and efficiency. Utility Model Content

[0007] Aiming at the technical problems of poor correction accuracy and efficiency of workpieces in the prior art, the utility model provides a correction mechanism, which is provided with a distance sensor, through which the workpiece can be automatically detected, thereby improving the correction accuracy and efficiency; at the same time, it is provided with multiple groups of correction components, when one group of correction components corrects the workpiece, another correction component can clamp the workpiece, thereby avoiding the change of the size of other points when performing single-point correction, and also improving the correction accuracy and efficiency.

[0008] A correction mechanism comprises a frame, a distance measuring sensor, and a correction component;

[0009] The distance measuring sensor is arranged on the frame or the correction component to detect the opening width of the workpiece;

[0010] The correction component is arranged on the frame and is used to correct the workpiece according to the detection signal of the distance measuring sensor;

[0011] There are multiple groups of correction components, and the multiple groups of correction components are arranged in sequence along the length direction of the frame.

[0012] Preferably, the correction assembly comprises a base plate and a correction unit;

[0013] The bottom plate is arranged on the frame;

[0014] The correction unit is arranged on the bottom plate;

[0015] There are two correction units, and the two correction units are arranged opposite to each other along the width direction of the frame.

[0016] Preferably, the correction unit comprises a hydraulic cylinder and a correction head;

[0017] The correction head is arranged at the output end of the hydraulic cylinder.

[0018] Preferably, the hydraulic cylinder is equipped with a displacement sensor.

[0019] Preferably, a conveying roller is provided on the bottom plate.

[0020] Preferably, at least one group of the correction components is slidably disposed on the frame, and the sliding direction of the correction components is along the length direction of the frame.

[0021] Preferably, the distance measuring sensor comprises two laser sensor units;

[0022] The two laser sensor units are arranged opposite to each other along the width direction of the frame.

[0023] Preferably, the laser sensor unit is mounted on a base plate of the correction assembly via a bracket.

[0024] Preferably, each group of the correction components is provided with the distance measuring sensor.

[0025] Preferably, it also includes a positioning member;

[0026] The positioning member is arranged on the frame to position the workpiece.

[0027] Compared with the prior art, the correction mechanism provided by the utility model includes a frame, a distance sensor, and a correction component; the distance sensor is arranged on the frame or the correction component to detect the opening width of the workpiece; the correction component is arranged on the frame to correct the workpiece according to the detection signal of the distance sensor; wherein the correction component is provided with multiple groups, and the multiple groups of the correction components are arranged in sequence along the length direction of the frame. The correction mechanism is provided with the distance sensor, so that after the correction is completed, the workpiece can be detected by the distance sensor to improve the detection efficiency; at the same time, the correction component corrects the workpiece according to the detection signal of the distance sensor, so as to improve the accuracy and efficiency of the correction; and the correction component is provided with multiple groups, when one group of the correction components corrects the workpiece, the other correction components can clamp other positions of the workpiece to avoid changes in the dimensions of other points during the correction process, so as to improve the accuracy and efficiency of the correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a correction mechanism provided in an embodiment;

[0030] Figure 2 for Figure 1 A structural schematic diagram of another angle of the correction mechanism shown;

[0031] Figure 3 for Figure 1 A top view of the correction mechanism shown;

[0032] Figure 4 For gantry feeding Figure 1 Front view after correction mechanism shown. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] It should be noted that when a component is referred to as being "fixed on", "installed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0037] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0038] The utility model provides a correction mechanism, which includes a frame, a distance sensor, and a correction component; the distance sensor is arranged on the frame or the correction component to detect the opening width of the workpiece; the correction component is arranged on the frame to correct the workpiece according to the detection signal of the distance sensor; wherein the correction component is provided with multiple groups, and the multiple groups of correction components are arranged in sequence along the length direction of the frame. The correction mechanism is provided with the distance sensor, so that after the correction is completed, the workpiece can be detected by the distance sensor to improve the detection efficiency; at the same time, the correction component corrects the workpiece according to the detection signal of the distance sensor, so as to improve the accuracy and efficiency of the correction; and the correction component is provided with multiple groups, when one group of the correction components corrects the workpiece, the other correction components can clamp other positions of the workpiece to avoid changes in the dimensions of other points during the correction process, so as to improve the accuracy and efficiency of the correction.

[0039] Please refer to Figures 1 to 4 This embodiment provides a correction mechanism 100 for correcting a workpiece. The correction mechanism 100 is mainly used to solve the problem of workpiece opening welding deformation and the problem of low accuracy of existing detection and correction methods.

[0040] The correction mechanism 100 includes a frame 10, a distance sensor 20, and a correction component 30. The distance sensor 20 is arranged on the frame 10 or the correction component 30 to detect the opening width of the workpiece. Through the arrangement of the distance sensor 20, firstly, the opening size of the workpiece can be automatically measured, and manual measurement is no longer required, and the measurement efficiency and measurement accuracy are higher; secondly, the distance sensor 20 can obtain the opening size information more accurately and quickly, so that the correction component 30 can operate more accurately.

[0041] The correction component 30 is disposed on the frame 10 to correct the workpiece according to the detection signal of the distance sensor 20. That is, after the distance sensor 20 detects the opening size information of the workpiece, the correction component 30 performs corresponding operations according to the information obtained by the detection to realize automatic correction of the workpiece.

[0042] Specifically, in one embodiment, the workpiece is a forklift mast 200. Of course, in other embodiments, the correction mechanism 100 can also be used on any structure that needs to correct the opening.

[0043] There are multiple groups of the correction components 30, and the multiple groups of the correction components 30 are sequentially arranged along the length direction of the frame 10. Here, multiple groups refer to at least two groups, that is, at least two groups of the correction components 30 are arranged in the correction mechanism 100, and these correction components 30 are sequentially arranged along the length direction of the frame 10. After the workpiece is fed into the correction mechanism 100, each of the correction components 30 corresponds to a different position on the workpiece. When one of the correction components 30 is correcting the workpiece, the other correction components 30 can clamp the workpiece against it, so that the dimensions of other points on the workpiece are not easily changed.

[0044] In such Figure 1 In the illustrated embodiment, the length direction of the frame 10 is along the X direction, and the width direction of the frame 10 is along the Y direction.

[0045] In such Figure 1 In the illustrated embodiment, three groups of the correction components 30 are provided, and the three groups of the correction components 30 are sequentially spaced apart along the length direction of the frame 10 .

[0046] It is understandable that in the prior art, the workpiece after welding is calibrated by manual calibration or single-point automatic calibration, which has poor calibration accuracy and low degree of automation. When calibrating one point on the workpiece, it is easy to cause changes in the dimensions of other points, affecting the calibration accuracy and efficiency.

[0047] In the calibration mechanism 100 provided in this embodiment, the distance sensor 20 and the calibration component 30 cooperate with each other to calibrate the workpiece, which has a high degree of automation and can improve the calibration accuracy and efficiency. At the same time, the calibration component 30 is provided with multiple groups, and when calibrating one point on the workpiece, it is not easy to cause the size of other points to change, thereby also improving the calibration accuracy and efficiency.

[0048] The process of the correction mechanism 100 correcting the workpiece is as follows: the workpiece first passes through the centering device on the front side of the correction mechanism 100 on the conveying platform, and the workpiece is divided into left and right parts by the centering device, and then sent into the correction mechanism 100; after the workpiece is sent into the correction mechanism 100, the distance sensor 20 detects the opening width of the workpiece, and the detected width is compared with the standard width, and then the correction component 30 performs corresponding actions to correct the workpiece; after the correction, the distance sensor 20 detects whether the size of the workpiece after correction meets the standard. If it does not meet the standard requirements, the workpiece is re-calibrated. If the correction meets the standard, the workpiece is conveyed forward.

[0049] In such Figure 1In the illustrated embodiment, when correcting each deformation, two of the three groups of correction components 30 are rigidly clamped, and the correction head performs central support and external pushing.

[0050] The distance sensor 20 can be connected to the controller. After the distance sensor 20 detects the width signal of the workpiece, the controller compares the detected width with the standard width, and then controls the correction component 30 to operate, and pushes or pulls the corresponding points on the workpiece through the correction component 30 to correct the workpiece. The controller can be a PLC (Programmable Logic Controller), a single-chip microcomputer, etc.

[0051] It is understandable that due to the different positions of the tilting cylinder seat and the crossbeam on the portal frame channel steel, the deformation caused by local heat during welding will not be linear. The most obvious is that the tilting cylinder seat is located on the neutral axis in the middle of the channel steel web and is close to the middle position of the channel steel in the length direction. The weld strength requirement is high, so the welding deformation is the largest and uncertain, and even the deformation at the two ends is small and the deformation in the middle is large. In other words, the deformation position and trend of each point on the upper, middle and lower part of the portal frame will be different.

[0052] By setting multiple sets of the correction components 30, each point can be corrected better. Figure 1 In the embodiment shown, three sets of distance measuring sensors and correction components are used to simultaneously detect and correct three positions of the workpiece. According to the detection results, when one point is obviously out of tolerance, the other two points with smaller out-of-tolerance can be constrained, and the position with larger deformation is forced in the opposite direction, so that when the correction head fixes the lower edge of the channel steel, the central support and external support between the three points are realized.

[0053] Preferably, in one embodiment, the correction assembly 30 includes a base plate 31 and a correction unit 32, wherein the base plate 31 is disposed on the frame 10, and the correction unit 32 is disposed on the base plate 31. There are two correction units 32, and the two correction units 32 are disposed opposite to each other along the width direction of the frame 10. When the workpiece is fed into the correction mechanism 100, the two correction units 32 are disposed corresponding to the two channel steels of the workpiece, and after the corresponding signal is detected by the distance sensor 20, the two correction units 32 operate accordingly, thereby correcting the workpiece.

[0054] Preferably, in one embodiment, the correction unit 32 includes a hydraulic cylinder 321 and a correction head 322, and the correction head 322 is arranged at the output end of the hydraulic cylinder 321. That is, in this embodiment, the correction unit 32 is driven by hydraulic energy. After the distance sensor 20 detects the corresponding signal, the hydraulic cylinder 321 drives the correction head 322 to move, and the correction head 322 pushes or pulls the workpiece to correct the workpiece. By using a hydraulic cylinder to correct the workpiece, the error of manual correction can be reduced, and the correction efficiency and correction accuracy can be improved.

[0055] More preferably, in one embodiment, the hydraulic cylinder 321 is a servo hydraulic cylinder.

[0056] In such Figure 1 In the illustrated embodiment, six of the six servo hydraulic cylinders are transverse thrust cylinders.

[0057] The hydraulic cylinder 321 can be connected to the servo hydraulic system. The servo hydraulic system can include a hydraulic oil tank, a quantitative radial piston pump, a motor, a proportional relief valve, a high-pressure filter, an oil return filter, an air cooler, a terminal box, a valve block, accessories and some detection components to form a hydraulic power source, which is an integrated hydraulic oil source with an external output pressure oil pipeline interface and an oil return pipeline interface. The proportional relief valve sets the output pressure value for the hydraulic oil source. The hydraulic oil source can also use oil cooling to cool the hydraulic medium. The output pressure pipeline pointer pressure gauge can also be installed in the servo hydraulic system, a visual liquid level thermometer can be installed on the hydraulic oil tank, and a hydraulic medium temperature sensor can also be installed on the hydraulic oil tank. The high-pressure filter adopts 5μm, and the return oil filter adopts 10μm.

[0058] In one embodiment, six groups of servo valve control valve groups in the servo hydraulic system control the actions of six servo hydraulic cylinders. The servo valve control valve group may include six servo valves, a pressure compensator, a load balancing valve, a pressure sensor, an accumulator, a valve block, etc. The servo valve adopts a high-frequency response servo and is equipped with a pressure compensator to ensure that the pressure difference of the servo valve PA or PB is constant and stabilize the control performance of the servo valve. Load balancing valves are installed at the pressure output ports A and B to ensure that the servo hydraulic cylinder can stay at any stroke position when overloaded. An accumulator is installed on the total input pressure pipeline to absorb the pressure fluctuations of the pipeline from the hydraulic oil source to the servo valve control valve group, reducing the impact of pressure fluctuations on the control accuracy of the servo valve. A pressure sensor is configured on the total input pressure pipeline to detect the input pressure value in real time. Pressure sensors can also be installed on each output oil circuit. Among them, hard pipes are used for the hydraulic oil source output pipeline and the external oil return pipeline. The hard pipes are laid to the servo valve control valve group. The servo control valve group transports the pressure oil to the servo hydraulic cylinder accessories through the hard pipes. A high-pressure ball valve is installed at the end of the hard pipe, and the hydraulic hose is connected to the servo hydraulic cylinder.

[0059] Preferably, in one embodiment, the hydraulic cylinder 321 has a built-in displacement sensor, so that the displacement of the cylinder can be determined, thereby improving control accuracy.

[0060] Preferably, in one embodiment, a conveying roller 33 is disposed on the bottom plate 31. After the workpiece is fed into the correction mechanism 100, the conveying roller 33 can carry and convey the workpiece, thereby better avoiding wear on the workpiece.

[0061] Specifically, in one embodiment, the conveying rollers 33 are disposed on both sides of the bottom plate 31 of each group of the correction components 30 .

[0062] Preferably, in one embodiment, at least one set of the correction components 30 is slidably disposed on the frame 10, and the sliding direction of the correction components 30 is along the length direction of the frame 10. This structure can better adapt to workpieces of different lengths, and can further improve the compatibility and adaptability of the correction mechanism 100.

[0063] In one embodiment, a group of the correction components 30 located in the middle is fixed on the frame 10 , and two groups of the correction components 30 located on both sides can be slidably disposed on the frame 10 .

[0064] The power source for driving the correction component 30 to slide on the frame 10 may be a servo motor. The slidable structure adopted by the correction component 30 may be selected according to the requirements. For example, the correction component 30 is mounted on a slide, the slide is arranged on a guide rail, a rack may be provided on the guide rail or the correction component 30, and the servo motor drives the gear to rotate, and the gear and rack are meshed and transmitted, thereby realizing the movement of the correction component 30.

[0065] Preferably, in one embodiment, the distance measuring sensor 20 includes two laser sensor units 21, and the two laser sensor units 21 are arranged opposite to each other along the width direction of the frame 10. Specifically, the laser sensor unit 21 is a high-precision laser sensor. When the workpiece enters the predetermined position, the laser sensor unit 21 starts measuring, and can read the size of the workpiece in real time, replacing the manual measurement action, and the detection repeatability and reproducibility are both accurate ≤ 0.1mm.

[0066] Specifically, when the workpiece is fed into the calibration mechanism 100, the laser sensor unit 21 is located outside the workpiece and detects from the outside to the inside. It is understandable that since there is no wing plate on the outside of the channel steel in the forklift gantry, the detection surface of the gantry channel steel is more complete.

[0067] Preferably, in one embodiment, the laser sensor unit 21 is mounted on the base plate 31 via a bracket. By mounting the laser sensor unit 21 on the base plate 31, the measurement error generated when the oil cylinder is actuated can be reduced.

[0068] Preferably, in one embodiment, each group of the calibration components 30 is provided with the distance measuring sensor 20. That is, each group of the calibration components 30 is provided with a pair of the laser sensor units 21.

[0069] Preferably, in one embodiment, each group of the distance measuring sensors 20 is arranged at a different height. Figure 1 In the embodiment shown, when the three groups of distance measuring sensors 20 are installed with height differences, the effect of surface detection can be achieved instead of traditional point detection. Furthermore, two upper and lower sensors can be arranged in the same group position, with six points on one side, so as to detect the size of the opening surface instead of the size of the opening point.

[0070] The correction dimension data detected by the laser sensor unit 21 can be fed back to the HIM screen in real time. The laser sensor unit 21 detects data and displays specific data on the HMI screen and is used to prompt correction. The control system gives a control signal to the servo hydraulic system, thereby accurately controlling the hydraulic output force / stroke and start / stop. The hydraulic cylinder 321 feeds back the pressure and displacement of the push or pull in real time, and the correction dimension value is fed back to the touch screen in real time.

[0071] Preferably, in one embodiment, the correction mechanism 100 further includes a positioning member 40, which is disposed on the frame 10 to position the workpiece. When the workpiece is fed into the correction mechanism 100, the conveying roller 33 carries and conveys the workpiece, and after the workpiece moves to a predetermined position, the positioning member 40 blocks and limits the workpiece to position the workpiece. Specifically, the positioning member 40 is disposed at the end of the frame 10.

[0072] Preferably, in an embodiment, the positioning member 40 can be arranged on the frame 10 in a movable structure, for example, the positioning member 40 can be raised and lowered on the frame 10 .

[0073] In such Figure 1 In the embodiment shown, the cylinder push head detects position information through sensors and can be adjusted according to the width of the workpiece. Correction force: 20T; three groups of hydraulic cylinders can act independently, and each action does not affect each other. The main body of the correction mechanism is welded with profiles and panels, which has good rigidity. A single set of mechanisms can adapt to the correction of 200 workpieces per day.

[0074] Preferably, in one embodiment, an easily replaceable structure is adopted between the correction head 322 and the hydraulic cylinder 321, so as to facilitate replacement after wear.

[0075] In one embodiment, before the correction mechanism 100 is operated, the controller may first perform correction calculations, and then control the correction unit 32 to operate. For example, in the same group of the correction components 30, the laser detection distance of the laser sensor unit 21 on the left is recorded as variable A, the laser detection distance of the laser sensor unit 21 on the right is recorded as variable A, the reference distances of the laser sensor units 21 on the left and right are recorded as variable F, the standard width of the workpiece is recorded as variable C, the detection width of the workpiece is recorded as variable D, and the width deviation of the workpiece is recorded as variable E. Then D = F-(A+B); E = CD.

[0076] In actual use, the workpiece can be divided into different areas for display according to the actual workpiece detection deviation value. Different correction movement amounts, correction pressure values, and correction holding times can be set manually according to different areas to ensure that the workpiece is quickly and automatically corrected to meet the requirements.

[0077] Due to the wide variety of workpieces, each with different sizes and correction parameters, the control system can establish a database to call out different workpiece sizes and correction parameters according to different workpiece types, which can meet the needs of fast and automatic correction of a variety of workpieces.

[0078] The system of the calibration mechanism 100 is capable of automatically conveying the workpiece, detecting the workpiece size in real time, and judging whether the workpiece is qualified. If the workpiece is not qualified, the conveying is stopped immediately and the calibration action is performed. If the calibration is qualified, the workpiece continues to move forward, and the workpiece size is judged in real time to perform the above actions until the workpiece leaves the calibration detection area.

[0079] The number of corrections can be set in the system. If the workpiece still fails to pass the test after the number of corrections is reached, the system will prompt an alarm and manual intervention will be required for correction.

[0080] During real-time correction, the system will compare the current workpiece size with the standard size. If it exceeds an unreasonable range, the system will alarm to prevent the workpiece from breaking due to excessive hydraulic squeezing or stretching, which could lead to safety accidents.

[0081] The correction mechanism 100 can automatically detect the workpiece opening size, read the workpiece size in real time, and after the detection is completed, the correction mechanism oil cylinder moves to automatically correct the workpiece opening. It has the characteristics of high precision, high efficiency, high intelligence, etc., and can improve the accuracy of the workpiece.

[0082] In one embodiment, when the workpiece is on the front conveyor roller track, the workpiece sensing switch at the end of the front conveyor roller track senses that the workpiece is in place; the movable correction components 30 on both sides are driven by the servo motor to move to the corresponding position. When the workpiece is in place in the correction mechanism 100, the three groups of distance sensors 20 measure the opening sizes of the three positions at the same time; based on the three-point measurement results, they are compared with the standard sizes in the system to determine whether each point is qualified. The system automatically selects the correction method based on the test results; for qualified positions, the hydraulic correction point is mainly maintained to prevent deformation of the point when other points are corrected; for unqualified positions, automatic correction is performed to cooperate with other points to achieve high-precision and high-efficiency correction. The correction is carried out simultaneously in two ways: position control and pressure holding. For the out-of-tolerance data of the out-of-tolerance position point, the matching position is automatically selected for correction. After the hydraulic cylinder is calibrated to the set size, it will automatically maintain pressure for a certain period of time. After the pressure maintenance is completed, the opening size after rebound is measured again, and the qualification is judged again according to the deformation amount. If qualified, the calibration is completed and the workpiece is transported downward. If unqualified, continue to calibrate in the above way until qualified.

[0083] The above is only an implementation method of the present invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

Claims

1. A correction mechanism, characterized in that: Including a frame, a distance sensor, and a correction component; The distance measuring sensor is arranged on the frame or the correction component to detect the opening width of the workpiece; The correction component is arranged on the frame and is used to correct the workpiece according to the detection signal of the distance measuring sensor; There are multiple groups of correction components, and the multiple groups of correction components are arranged in sequence along the length direction of the frame.

2. The correction mechanism according to claim 1, characterized in that: The correction assembly comprises a base plate and a correction unit; The bottom plate is arranged on the frame; The correction unit is arranged on the bottom plate; There are two correction units, and the two correction units are arranged opposite to each other along the width direction of the frame.

3. The correction mechanism according to claim 2, characterized in that: The correction unit includes a hydraulic cylinder and a correction head; The correction head is arranged at the output end of the hydraulic cylinder.

4. The correction mechanism according to claim 3, characterized in that: The hydraulic cylinder is equipped with a displacement sensor.

5. The correction mechanism according to claim 2, characterized in that: A conveying roller is arranged on the bottom plate.

6. The correction mechanism according to any one of claims 1 to 5, characterized in that: At least one set of the correction components is slidably disposed on the frame, and the sliding direction of the correction components is along the length direction of the frame.

7. The correction mechanism according to claim 1, characterized in that: The distance measuring sensor comprises two laser sensor units; The two laser sensor units are arranged opposite to each other along the width direction of the frame.

8. The correction mechanism according to claim 7, characterized in that: The laser sensor unit is mounted on the bottom plate of the calibration component via a bracket.

9. The correction mechanism according to claim 7 or 8, characterized in that: Each group of the correction components is provided with the distance measuring sensor.

10. The correction mechanism according to claim 1, characterized in that: Also includes a positioning member; The positioning member is arranged on the frame to position the workpiece.

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