A kind of plate edge sealing defect detection equipment, plate automatic processing system

Abstract

The application relates to a visual detection technology, in particular to a plate edge sealing defect detection equipment and a plate automatic processing system. The detection equipment comprises a machine body, a row of driving rollers are rotationally arranged on an upper roller frame along the width direction at equal intervals, and a row of driven rollers are rotationally arranged on a lower roller frame along the width direction at equal intervals. A longitudinal shaft is further rotationally arranged on the upper roller frame along the length direction, a plurality of oblique correction mechanisms are arranged on the longitudinal shaft, and the plurality of oblique correction mechanisms are regularly distributed along the axis direction of the longitudinal shaft. The oblique correction mechanism comprises a plurality of elastic torsion structures. When the oblique correction mechanism operates, the elastic force of the lateral guide roller can be provided for the advancing plate at all times, so that the non-detection edge of the plate can be always attached to the lateral guide roller, that is, the moving and advancing type detection is carried out by taking the non-detection edge as the detection reference under the condition that the detection edge of the plate is not subjected to force, and the visual focal length of the detection is stable.

Description

Technical Field

[0001] This invention relates to a visual inspection technology, specifically a board edge banding defect detection device and a board automatic processing system. Background Technology

[0002] Visual inspection of board edge banding is a method that uses machine vision technology to automatically inspect the quality of board edge banding.

[0003] Hot melt adhesive edge banding is one of the most commonly used wood edge banding processes. It involves heating hot melt adhesive to melt it and then applying it to the edge of the board. The edge banding strip is then pressed onto the adhesive, and the adhesive bonds the edge banding strip to the edge of the board through the pressing process. A subsequent curing process is then used to form a strong bond.

[0004] Since the edge banding of the wood is bonded to the edge of the board by hot melt adhesive, it is necessary to check the dimensions after the edge banding strip and the edge of the board are bonded together. After the inspection is qualified, the curing process is carried out. During the bonding process, the dimensions of some edge banding will change due to thermodynamic effects (thermal expansion and contraction). Therefore, after bonding and before curing, it is necessary to check for defects (including bulges and dents) in the edge banding of the board.

[0005] Visual inspection of edge banding can significantly improve inspection efficiency and accuracy, and reduce errors and costs associated with manual inspection. In order to adapt to modern assembly line operations, the board material moves continuously during the inspection process. In order to ensure that the focal length of the visual camera is appropriate, the edge of the board material needs to be positioned and restricted to maintain a constant inspection benchmark.

[0006] The conventional method is to set adjustable guide wheels on both sides of the board. By adjusting the distance between the guide wheels on both sides to match the thickness of the board, the moving board can be constrained, so that the detection benchmark is constant. However, setting guide wheels on both sides will inevitably cause the side of the board whose edge banding has not been cured to be stressed. Precisely because it has not been cured, the edge banding strip is very likely to deform after being stressed. Summary of the Invention

[0007] The purpose of this invention is to provide a board edge banding defect detection device and an automatic board processing system to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a sheet metal edge banding defect detection device, comprising a machine body, wherein a lower roller frame and an adjustable upper roller frame are provided within the machine body, forming a detection channel between the upper roller frame and the lower roller frame, the upper roller frame and the lower roller frame being arranged along the length direction of the machine body, a row of driving rollers being rotatably arranged at equal intervals along the width direction on the upper roller frame, and a row of driven rollers being rotatably arranged at equal intervals along the width direction on the lower roller frame; a longitudinal axis is also rotatably arranged on the upper roller frame along its length direction, and multiple sets of oblique correction mechanisms are provided on the longitudinal axis, the multiple sets of oblique correction mechanisms being arranged along the axis of the longitudinal axis. The oblique correction mechanism is distributed in a regular pattern. It includes multiple spring-torsion structures, and the multiple spring-torsion structures in the same group of oblique correction mechanisms are distributed at equal angles along the circumference of the longitudinal axis. A vision detection module is adjustablely provided on one side of the detection channel, and a side beam is fixedly provided on the other side. Multiple side guide wheels are rotatably provided on the side beam at intervals. The active roller and the longitudinal axis are both connected to a power device. When the power device drives the active roller and the longitudinal axis to rotate, the active roller cooperates with the driven roller to drive the plate to move along the length of the detection channel, while the longitudinal axis drives the multiple groups of oblique correction mechanisms to rotate and drives one side of the plate to be in close contact with the side guide wheels.

[0009] The sheet metal edge banding defect detection device described above: the spring-torsion structure includes a top sleeve fixed radially to the longitudinal axis, a movable rod elastically slidably connected to the top sleeve, and a curved foot elastically rotatably engaged with the movable rod; the curved foot is "J" shaped, including a straight upper part and a hook lower part, and the hook part has an angle with the direction of travel of the sheet metal.

[0010] As described above, the sheet metal edge banding defect detection device comprises: multiple sets of fixed parts formed on the longitudinal axis; the top of the top sleeve is fixedly connected to the fixed parts; the upper part of the movable rod is slidably engaged with the top sleeve; wherein, multiple spaced sliding feet are formed on the outer periphery of the top of the movable rod; multiple sliding grooves are formed on the outer periphery of the lower part of the top sleeve; the sliding feet are slidably engaged with the sliding grooves; a compression spring is sleeved between the top sleeve and the movable rod; one end of the compression spring abuts against the step formed on the upper part of the top sleeve, and the other end of the compression spring abuts against the step formed on the lower part of the movable rod.

[0011] As described above, the board edge banding defect detection equipment has the following features: a ball bearing frame is fixedly installed on the top of the movable rod, and multiple ball bearing grooves are provided around the ball bearing frame. The upper part of the curved foot is fixedly connected to the housing, and a raceway is provided on the upper edge of the inner side of the housing. The balls embedded in the ball bearing grooves roll in cooperation with the raceway.

[0012] As described above, the sheet metal edge banding defect detection equipment has the following features: a spring is provided on the outside of the housing, one end of which is fixed to the housing, and the other end of which abuts against a stop bar fixed on the step formed at the bottom of the movable rod; an arc-shaped limiting groove is also provided on the step formed at the bottom of the movable rod, and a limiting post is fixedly provided on the outer wall of the housing, with one end of the limiting post movably embedded in the limiting groove.

[0013] As described above, the sheet metal edge banding defect detection equipment has the following features: bearing seats are provided at both ends of the longitudinal axis, and the bearing seats are mounted on the upper roller frame via a platform; lower connecting parts are fixedly installed at the four corners of the upper roller frame, and the lower connecting parts are connected to the upper connecting parts via elastic telescopic sleeves; the upper connecting parts are fixed around the upper truss, and the upper truss is also connected to a lifting device.

[0014] As described above, the sheet metal edge banding defect detection equipment has a sprocket fixedly installed at one end of the active roller, and the sprockets on multiple active rollers are connected by chains; the end of the active roller is rotatably connected to the mounting base, and the mounting base is fixed on the upper roller frame.

[0015] The sheet metal edge banding defect detection equipment described above: the power unit is located on one side of the upper roller frame, and the power unit includes a motor mounted on the side wall of one end of the upper roller frame via a reduction gearbox, a drive shaft connected to the output end of the reduction gearbox and rotatably connected to the upper roller frame, and a transmission shaft connected to the drive shaft; the transmission shaft is also rotatably mounted on the upper roller frame, and the transmission shaft is connected to the drive shaft via a first belt; the transmission shaft is connected to the adjacent drive roller via a second belt, and the transmission shaft is also connected to the longitudinal shaft via a bevel gear set; the bevel gear set includes a drive gear fixedly mounted on the transmission shaft and a driven gear fixedly mounted on the end of the longitudinal shaft, and the drive gear and the driven gear mesh with each other.

[0016] An automated processing system for sheet metal includes a sheet metal edge banding defect detection device as described above.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: During the process of the plate moving under the action of the active roller and the driven roller, when the rotating longitudinal axis drives the curved foot to rotate and contact the moving plate, since there is an angle between the hook part and the moving direction of the plate, the rotating hook part is subjected to the resistance from the top surface of the plate and has a tendency to rotate; at the same time, the moving plate will also give the hook part a torque to rotate counterclockwise; that is, the hook part is subjected to two forces, one generated by its own rotation and the other by the moving of the plate, and the two forces act in the same direction; however, since the curved foot is elastically connected to the movable rod, under the mechanism of elastic potential energy, the hook part at the bottom of the curved foot will apply a reaction force to the plate that moves towards the lateral guide wheel. This reaction force consists of the above two parts, ensuring that the plate moves under pressure on only one side (non-detection side) and maintaining the stability of one side reference, ultimately achieving the goal of keeping the other side (detection side) of the plate unloaded, the detection reference stable, the visual focal jump range of the inspected area narrow, and the detection accuracy high. Attached Figure Description

[0018] Figure 1 A schematic diagram of a board edge banding defect detection equipment;

[0019] Figure 2 This is a structural schematic diagram of a board edge banding defect detection equipment from another perspective.

[0020] Figure 3 This is a schematic diagram of the structure of a board edge banding defect detection equipment after the visual inspection module has been disassembled, viewed from another angle.

[0021] Figure 4 This is a schematic diagram of the structure of a sheet metal edge banding defect detection equipment after removing the outer shell of the upper cabinet and the vision inspection module.

[0022] Figure 5 This is a structural diagram of the lower roller frame, upper roller frame, and upper truss in a sheet metal edge banding defect detection equipment.

[0023] Figure 6 In order to be in Figure 5 A schematic diagram of the structure after the upper and lower roller frames are separated and misaligned;

[0024] Figure 7 This is a structural diagram of the upper roller frame and upper truss in a sheet metal edge banding defect detection equipment.

[0025] Figure 8 In order to be in Figure 7 Based on the above, the structural diagram after disassembling the upper roller frame, the drive roller, and the longitudinal shaft is shown;

[0026] Figure 9 for Figure 8 A structural diagram from another perspective;

[0027] Figure 10 This is a schematic diagram of the structure from a top view along the longitudinal axis and the upper truss.

[0028] Figure 11 This is a schematic diagram of the structure after separating the upper truss and the longitudinal axis;

[0029] Figure 12 A top view of the vertical axis and the oblique correction mechanism on it;

[0030] Figure 13 In order to be in Figure 12 A top view of the structure after retaining only one set of spring-torsion components;

[0031] Figure 14 for Figure 13 The front view;

[0032] Figure 15 for Figure 13 Perspective view;

[0033] Figure 16 In order to be in Figure 15 A schematic diagram of the force and motion of a spring-torsion structure based on the above.

[0034] Figure 17 for Figure 14 Enlarged view of point A in the middle;

[0035] Figure 18 In order to be in Figure 14 The front view after disassembling the spring-torsion structure;

[0036] Figure 19 for Figure 18 Enlarged view of point B in the middle;

[0037] Figure 20 for Figure 18 A three-dimensional view;

[0038] Figure 21 for Figure 20 Enlarged view of point C in the middle;

[0039] Figure 22 for Figure 21 A structural diagram from another perspective.

[0040] In the diagram: 1. Machine body; 2. Vision inspection module; 3. Lower roller frame; 4. Upper roller frame; 5. Driven roller; 6. Side beam; 7. Side guide wheel; 8. Longitudinal shaft; 801. Fixing part; 9. Upper truss; 10. Elastic telescopic sleeve; 11. Upper connecting part; 12. Lower connecting part; 13. Lifting device; 14. Support; 15. Platform; 16. Motor; 17. Drive shaft; 18. First belt; 19. Transmission 20. Shaft; 21. Second belt; 22. Drive roller; 23. Mounting base; 24. Chain; 25. Drive gear; 26. Driven gear; 27. Top sleeve; 2801. Slide groove; 2802. Compression spring; 29. ​​Movable rod; 20. Slide foot; 20. Limiting groove; 21. Housing; 22. Raceway; 33. Curved foot; 34. Spring; 35. Ball bearing cage; 36. Stop bar; 37. Limiting post. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Please see Figures 1-22 As an embodiment of the present invention, the sheet metal edge banding defect detection equipment includes a body 1, which includes an upper cabinet and a lower cabinet. An upper roller frame 4 is adjustablely arranged at the lower part of the upper cabinet, and a lower roller frame 3 is arranged at the upper part of the lower cabinet. A detection channel is formed between the upper roller frame 4 and the lower roller frame 3. Both the upper roller frame 4 and the lower roller frame 3 are arranged along the length direction of the body 1. A row of active rollers 21 is rotatably arranged at equal intervals along the width direction on the upper roller frame 4, and a row of driven rollers 5 is rotatably arranged at equal intervals along the width direction on the lower roller frame 3. A longitudinal shaft 8 is also rotatably arranged on the upper roller frame 4 along its length direction, and multiple sets of oblique correction mechanisms are arranged on the longitudinal shaft 8. The mechanisms are regularly distributed along the axial direction of the longitudinal axis 8; the oblique correction mechanism includes multiple spring-torsion structures, and the multiple spring-torsion structures in the same group of oblique correction mechanisms are distributed at equal angles along the circumference of the longitudinal axis 8; a visual inspection module 2 is adjustablely provided on one side of the detection channel, and a side beam 6 is fixedly provided on the other side, and multiple side guide wheels 7 are rotatably provided on the side beam 6 at intervals; the active roller 21 and the longitudinal axis 8 are both connected to a power device; when the power device drives the active roller 21 and the longitudinal axis 8 to rotate, the active roller 21 cooperates with the driven roller 5 to drive the plate to move along the length direction of the detection channel, while the longitudinal axis 8 drives the multiple groups of oblique correction mechanisms to rotate, and drives one side of the plate to be in close contact with the side guide wheels 7.

[0043] In this embodiment, the thickness of the detection channel can be changed by the adjustable upper roller frame 4 to match different thicknesses of the board, ensuring that while the bottom surface of the board rolls and contacts the driven roller 5, the active roller 21 can contact the top surface of the board. The adjustable vision detection module 2 can adjust the detection spacing according to the width of the board to be detected. Most importantly, the oblique correction mechanism can always provide the traveling board with the elastic force of the side guide wheel 7, ensuring that the non-detection edge of the board can always be in contact with the side guide wheel 7. That is, while ensuring that the detection edge of the board is not subjected to force, the non-detection edge is used as the detection reference for moving and traveling detection, and the visual focus of the detection is stable.

[0044] As a further embodiment of the present invention, please refer to... Figures 12-19 The elastic twist structure includes a top sleeve 26 fixed radially to the longitudinal axis 8, a movable rod 28 elastically slidably connected to the top sleeve 26, and a curved foot 30 elastically rotatably engaged with the movable rod 28; the curved foot 30 is "J" shaped, including a straight upper part and a hook lower part, and the hook part has an angle with the traveling direction of the plate.

[0045] In this embodiment, Figure 8 The direction of its rotation is shown on the vertical axis 8. Figure 16 The direction of travel of the sheet material is given as S (from bottom to top). When the curved foot 30 contacts the top surface of the sheet material, the contact point between the hook and the top surface of the sheet material is located at the lower part of the hook. The curved foot 30 can only extend and retract along the axis of the straight section and / or rotate around the axis of the straight section. Because the contact point between the hook and the top surface of the sheet material is off-axis, during the process of the sheet material traveling under the action of the driving roller 21 and the driven roller 5, when the rotating longitudinal axis 8 drives the curved foot 30 to rotate and contact the traveling sheet material, there is an angle between the hook and the direction of travel of the sheet material, and from... Figure 16 It is not difficult to see that the angle formed between the hook portion in contact with the board and the direction of the board's travel is located in the first quadrant of the circle; therefore, the rotating hook portion is driven by the rotation of the longitudinal axis 8, that is, it has Figure 16 The torque T1 shown; simultaneously, the moving plate will also provide a counterclockwise rotation torque to the hook, that is... Figure 16 The torque T2 shown refers to the hook portion being subjected to two forces: one generated by its own rotation and the other by the movement of the plate. However, since the curved foot 30 is elastically connected to the movable rod 28, under the mechanism of elastic potential energy, the hook portion at the lower part of the curved foot 30 will exert a reaction force on the plate, moving it towards the lateral guide wheel 7. This force is related to... Figure 16The T2 torque shown is a reaction force composed of the two parts mentioned above. This reaction force ensures that the plate moves under pressure on only one side (the non-detection side) and maintains the stability of the reference on one side. Ultimately, it achieves the goal of keeping the other side (detection side) of the plate unaffected, thus maintaining the stability of the detection reference, narrowing the range of visual focal length fluctuation, and high detection accuracy.

[0046] As a further embodiment of the present invention, multiple sets of fixing parts 801 are formed on the longitudinal axis 8, and the top of the top sleeve 26 is fixedly connected to the fixing parts 801; the upper part of the movable rod 28 is slidably engaged with the top sleeve 26, wherein multiple spaced sliding feet 2801 are formed on the outer periphery of the top of the movable rod 28, and multiple sliding grooves 2601 are formed on the outer periphery of the lower part of the top sleeve 26, and the sliding feet 2801 are slidably engaged with the sliding grooves 2601; a compression spring 27 is sleeved between the top sleeve 26 and the movable rod 28, one end of the compression spring 27 abuts against the step formed on the upper part of the top sleeve 26, and the other end of the compression spring 27 abuts against the step formed on the lower part of the movable rod 28.

[0047] In this embodiment, the sliding groove 2601 and the sliding foot 2801 cooperate to prevent relative rotation between the movable rod 28 and the top sleeve 26. Under the action of the compression spring 27, the movable rod 28 always has an elastic force away from the longitudinal axis 8. However, with the cooperation of the sliding groove 2601 and the sliding foot 2801, the movable rod 28 will not disengage from the top sleeve 26. In addition, when the hook part contacts the top surface of the plate, as the hook part rotates, the movable rod 28 will contract and squeeze the compression spring 27. The compression spring 27 is further compressed, increasing the contact pressure between the hook part and the top surface of the plate.

[0048] As a further embodiment of the present invention, a ball bearing frame 32 is fixedly installed on the top of the movable rod 28. The ball bearing frame 32 is provided with a plurality of ball bearing grooves around its periphery. The upper part of the curved foot 30 is fixedly connected to the housing 29, and a raceway 2901 is provided on the upper edge of the inner side of the housing 29. The balls (not shown in the figure) embedded in the ball bearing grooves roll in cooperation with the raceway 2901.

[0049] In this embodiment, the ball groove, the ball, and the raceway 2901 on the upper edge of the inner wall of the sleeve 29 are used to realize the rotational connection between the sleeve 29 and the movable rod 28, thereby rotatably setting the curved foot 30 at the lower part of the movable rod 28.

[0050] As a further embodiment of the present invention, a spring 31 is provided on the outside of the housing 29. One end of the spring 31 is fixed to the housing 29, and the other end abuts against a stop bar 33 fixedly provided on the step formed at the lower part of the movable rod 28. An arc-shaped limiting groove 2802 is also provided on the step formed at the lower part of the movable rod 28. A limiting post 34 is fixedly provided on the outer wall of the housing 29, and one end of the limiting post 34 is movably embedded in the limiting groove 2802.

[0051] In this embodiment, because of the limiting post 34 and the limiting groove 2802, the housing 29 can only rotate relative to the movable rod 28 within a certain angle range. The spring 31 and the stop rod 33 ensure that there is always an elastic torque between the housing 29 and the movable rod 28. This torque is intended to be released, but it cannot be completely unloaded due to the action of the limiting post 34 and the limiting groove 2802. Therefore, there is an initial torque between the housing 29 and the movable rod 28. When the curved foot 30 contacts the top surface of the plate and generates a rotational tendency, it is necessary to overcome this initial torque, which further bends the spring 31. This causes the hook part at the bottom of the curved foot 30 to apply a reaction force to the plate that moves towards the lateral guide wheel 7.

[0052] As a further embodiment of the present invention, bearing seats are provided at both ends of the longitudinal shaft 8, and the bearing seats are mounted on the upper roller frame 4 via a base 15; lower connecting parts 12 are fixedly installed at the four corners of the upper roller frame 4, and the lower connecting parts 12 are connected to the upper connecting parts 11 via an elastic telescopic sleeve 10. The upper connecting parts 11 are fixed around the upper truss 9, and the upper truss 9 is also connected to the lifting device 13 via a support 14.

[0053] In this embodiment, the upper truss 9 is raised and lowered by the lifting device 13, and the upper truss 9 is then raised and lowered by the elastic telescopic sleeve 10, so that a row of active rollers 21 rotatably arranged on the upper roller frame 4 can elastically contact the top surface of the plate.

[0054] As a further embodiment of the present invention, a sprocket is fixedly installed at one end of the active roller 21, and the sprockets on the multiple active rollers 21 are connected to each other by a chain 23; the end of the active roller 21 is rotatably connected to the mounting base 22, and the mounting base 22 is fixed on the upper roller frame 4.

[0055] In this embodiment, the sprockets and chains 23 enable the multiple active rollers 21 arranged in a row to run synchronously, in the same direction and with the same amplitude, so as to assist the plate in moving with the help of the driven rollers 5 at the bottom.

[0056] As a further embodiment of the present invention, the power unit is disposed on one side of the upper roller frame 4. The power unit includes a motor 16 mounted on the side wall of one end of the upper roller frame 4 via a reduction gearbox, a drive shaft 17 connected to the output end of the reduction gearbox and rotatably connected to the upper roller frame 4, and a transmission shaft 19 connected to the drive shaft 17. The transmission shaft 19 is also rotatably disposed on the upper roller frame 4. The transmission shaft 19 is connected to the drive shaft 17 via a first belt 18. The transmission shaft 19 is connected to the adjacent drive roller 21 via a second belt 20. The transmission shaft 19 is also connected to the longitudinal shaft 8 via a bevel gear set. The bevel gear set includes a drive gear 24 fixedly mounted on the transmission shaft 19 and a driven gear 25 fixedly mounted on the end of the longitudinal shaft 8. The drive gear 24 and the driven gear 25 mesh with each other.

[0057] In this embodiment, when the motor 16 is working, the reducer outputs torque to the drive shaft 17. The drive shaft 17 drives the transmission shaft 19 to rotate through the first belt 18. The transmission shaft 19 drives the adjacent drive roller 21 and the longitudinal shaft 8 to rotate through the second belt 20 and the bevel gear set, respectively. The adjacent drive roller 21 then drives each drive roller 21 to rotate synchronously through the chain 23 and the sprocket.

[0058] The present invention also proposes an automatic processing system for sheet metal, which includes the sheet metal edge banding defect detection device described above.

[0059] In another embodiment, the sheet metal processing includes the following steps:

[0060] Step 1: Raw material collection and preparation;

[0061] Step 2: Cutting and shaping. Use a circular saw or band saw to cut the wood into the basic shape of the board.

[0062] Step 3: Use a steam drying kiln to control the temperature and humidity inside the kiln, so that the moisture content of the wood is reduced from more than 30% to 8%-12%, thus preventing the boards from cracking and deforming during use.

[0063] Step 4, surface treatment: gradually polish the surface with sandpaper of different grits to remove burrs and saw marks, so that the roughness Ra value is controlled below 0.8μm;

[0064] Step 5: Hot melt adhesive edge sealing. Heat the hot melt adhesive to a certain temperature, apply it to the edge of the board, and then press the edge sealing strip onto the adhesive.

[0065] Step six, inspection: Under the premise that one side of the board edge banding is not under stress and the reference on the other side is constant, a vision inspection camera is used to set the vision focal length according to the width of the board and to detect the distance between the edge banding and the vision camera in order to verify the straightness of the board edge banding.

[0066] The above embodiments are exemplary and not restrictive. Therefore, any technical solutions that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention are included within the scope of the present invention.

Claims

1. A sheet metal edge banding defect detection device, comprising a machine body, wherein a lower roller frame and an adjustable upper roller frame are disposed within the machine body, forming a detection channel between the upper roller frame and the lower roller frame, the upper roller frame and the lower roller frame being disposed along the length direction of the machine body, wherein a row of driving rollers is rotatably disposed at equal intervals along the width direction of the upper roller frame, and a row of driven rollers is rotatably disposed at equal intervals along the width direction of the lower roller frame; characterized in that, A longitudinal axis is rotatably mounted on the upper roller frame along its length. Multiple sets of oblique correction mechanisms are mounted on the longitudinal axis, and these mechanisms are regularly distributed along the axis of the longitudinal axis. Each oblique correction mechanism includes multiple spring-torsion structures, and these spring-torsion structures are distributed at equal angles along the circumference of the longitudinal axis. A vision inspection module is adjustablely mounted on one side of the detection channel, and a side beam is fixedly mounted on the other side. Multiple lateral guide wheels are rotatably mounted on the side beam at intervals. Both the active roller and the longitudinal axis are connected to a power unit. When the power unit drives the active roller and the longitudinal axis to rotate, the active roller, in conjunction with the driven roller, drives the plate material to travel along the length of the detection channel, while the longitudinal axis drives the multiple sets of oblique correction mechanisms to rotate, causing one side of the plate material to press tightly against the lateral guide wheels. The spring-torsion structure includes a top sleeve fixed radially to the longitudinal axis, a movable rod elastically slidably connected to the top sleeve, and a curved foot elastically rotatably engaged with the movable rod; the curved foot is J-shaped, including a straight upper section and a hook lower section, the hook section having an angle with the direction of travel of the plate; multiple sets of fixed sections are formed on the longitudinal axis, and the top of the top sleeve is fixedly connected to the fixed sections; the upper part of the movable rod is slidably engaged with the top sleeve, wherein multiple spaced sliding feet are formed on the outer periphery of the top of the movable rod, and multiple sliding grooves are formed on the outer periphery of the lower part of the top sleeve, the sliding feet slidingly engaging with the sliding grooves; a compression spring is sleeved between the top sleeve and the movable rod, one end of the compression spring abuts against the step formed on the upper part of the top sleeve, and the other end of the compression spring abuts against the step formed on the lower part of the movable rod.

2. The sheet metal edge banding defect detection equipment according to claim 1, characterized in that, A ball bearing frame is fixedly installed on the top of the movable rod. Multiple ball bearing grooves are provided around the ball bearing frame. The upper part of the curved foot is fixedly connected to the housing. A raceway is provided on the upper edge of the inner side of the housing. The balls embedded in the ball bearing grooves roll in cooperation with the raceway.

3. The sheet metal edge banding defect detection equipment according to claim 2, characterized in that, The outer side of the housing is provided with a spring plate, one end of which is fixed to the housing, and the other end of which abuts against a stop bar fixedly provided on the step formed at the lower part of the movable rod; an arc-shaped limiting groove is also provided on the step formed at the lower part of the movable rod, and a limiting post is fixedly provided on the outer wall of the housing, one end of which is movably embedded in the limiting groove.

4. The sheet metal edge banding defect detection equipment according to claim 1, characterized in that, Both ends of the longitudinal axis are provided with bearing seats, which are mounted on the upper roller frame via a platform; lower connecting parts are fixedly installed at the four corners of the upper roller frame, and the lower connecting parts are connected to the upper connecting parts via elastic telescopic sleeves. The upper connecting parts are fixed around the upper truss, and the upper truss is also connected to a lifting device.

5. The sheet metal edge banding defect detection equipment according to claim 1, characterized in that, A sprocket is fixedly mounted on one end of the drive roller, and the sprockets on the multiple drive rollers are connected by chains; the end of the drive roller is rotatably connected to the mounting base, and the mounting base is fixed on the upper roller frame.

6. The sheet metal edge banding defect detection equipment according to claim 1, characterized in that, The power unit is located on one side of the upper roller frame. The power unit includes a motor mounted on the side wall of one end of the upper roller frame via a reduction gearbox, a drive shaft connected to the output end of the reduction gearbox and rotatably connected to the upper roller frame, and a transmission shaft connected to the drive shaft. The transmission shaft is also rotatably mounted on the upper roller frame, and the transmission shaft is connected to the drive shaft via a first belt. The transmission shaft is connected to the adjacent drive roller via a second belt, and the transmission shaft is also connected to the longitudinal shaft via a bevel gear set. The bevel gear set includes a drive gear fixedly mounted on the transmission shaft and a driven gear fixedly mounted on the end of the longitudinal shaft, and the drive gear and the driven gear mesh with each other.

7. An automatic sheet metal processing system, characterized in that, Includes the sheet metal edge banding defect detection equipment as described in any one of claims 1-6.

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