Pre-surface grinding mechanism and grinding method for high-precision sheet metal bending processing

Abstract

The present invention relates to the technical field of sheet metal processing, and specifically to a pre-surface grinding mechanism and grinding method for high-precision sheet metal bending processing, including a housing and a clamping and conveying mechanism, the grinding mechanism also includes two visual inspection cameras and two segmented grinding components, the segmented grinding components have a grinding contact portion for discharging along the width direction of the plate, and a grinding guide portion correspondingly connected to each grinding contact portion, the grinding guide portion can guide the grinding contact portion to move toward the surface of the plate, the clamping and conveying mechanism has a detection avoidance port and a grinding avoidance port, and the present application can realize automatic detection and defect recognition of the plate surface through the equipped visual inspection camera, ensuring that in the subsequent grinding process, the system can deal with local defects on the plate surface in a targeted manner, such as rust or scratches. This automated defect detection improves production efficiency and reduces errors in manual inspection.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal processing, and in particular to a pre-surface grinding mechanism and a grinding method for high-precision sheet metal bending processing. Background Art

[0002] In the sheet metal processing process, the surface quality of the sheet has a crucial impact on the performance and appearance of the final product. Sheet metal parts are usually in a flat state before bending. The upper and lower surfaces of these sheets are often prone to rust or oxide layers due to storage, transportation and environmental factors. If these rusts are not handled in time, they may have an adverse effect on the surface of the sheet in the subsequent bending process, resulting in a decline in the quality of the finished product, such as rough surface, poor precision, and even cracks. Therefore, before the sheet metal bending process, the upper and lower surfaces of the sheet must be polished to remove rust and oxide layers, ensure the flatness and cleanliness of the sheet surface, and thus improve the accuracy of the bending process and the quality of the finished product. Traditional rust removal methods may be inefficient and it is difficult to ensure a uniform grinding effect, which puts higher requirements on the accuracy and automation of the grinding equipment.

[0003] Chinese patent publication number CN108247462B discloses a sheet metal grinding device; it includes a frame, a motor and a grinding mechanism, the grinding mechanism includes a first rotating shaft, a limit piece, a grinding assembly and a rotating part; a downward pressure spring is provided on the frame; the grinding assembly includes a roller, a friction layer, and a negative pressure piston, an electromagnet is fixed on the frame, a first adsorption block and a rotating groove are provided on the negative pressure piston, a return spring and a rotating piston are provided in the rotating groove, a thread is provided on the first rotating shaft, a sliding block is provided on the rotating piston, and a second adsorption block is embedded in the rotating piston; a sliding spring and a switch are provided in the roller; an air inlet check valve is provided on the side wall of the roller, an air outlet check valve is fixed on the roller, a collecting box is fixed on the end of the roller, an exhaust port and a discharge port are provided on the collecting box; a filter is fixed in the collecting box.

[0004] The grinding device can only grind the upper surface of the plate, while the grinding of the lower surface requires manual intervention. This means that after finishing the grinding of the upper surface, the operator must take the plate out of the device, turn it over and put it back in to grind the lower surface. This process not only increases the complexity of manual operation, but also greatly reduces the overall processing efficiency. In addition, due to the design limitations of the grinding device, the position of the grinding head is usually fixed, which makes the grinding range of the upper and lower surfaces of the plate lack flexibility and precise control. Even in areas where rust has not occurred, the grinding head will still perform unnecessary grinding, which not only wastes grinding time, but may also cause a certain degree of damage to the surface quality of the plate, resulting in material waste and unnecessary processing losses. In summary, the existing grinding process has obvious deficiencies in both efficiency and precision. Summary of the invention

[0005] In response to the above problems, a high-precision sheet metal bending processing pre-surface grinding mechanism and grinding method are provided. The plates can be conveyed in an orderly manner through the clamping and conveying mechanism, and the rusted positions of the plates can be detected by the visual inspection camera. The rusted positions of the plates can be polished by the segmented grinding components, which solves the problem that the existing grinding devices cannot accurately grind the rusted positions of the plates.

[0006] In order to solve the problems of the prior art, the present invention provides a high-precision sheet metal part bending processing front surface grinding mechanism, including a casing, and a clamping and conveying mechanism horizontally arranged in the casing, the clamping and conveying mechanism having a feeding end and a discharging end arranged in a horizontal direction, the grinding mechanism also includes two visual inspection cameras arranged at the top and bottom of the feeding end of the clamping and conveying mechanism, and two segmented grinding assemblies symmetrically arranged at the upper and lower ends of the clamping and conveying mechanism, the segmented grinding assembly having a grinding contact portion for discharging along the width direction of the plate, and a grinding guide portion correspondingly connected to each grinding contact portion, the grinding guide portion being capable of guiding the grinding contact portion to move toward the surface of the plate, the clamping and conveying mechanism having a detection avoidance opening for allowing the two visual inspection cameras to detect the upper and lower surfaces of the plate, and a grinding avoidance opening for allowing the grinding contact portion to pass through to grind the surface of the plate, the grinding avoidance opening extending along the width direction of the clamping and conveying mechanism, after the visual inspection camera detects local rust on the surface of the plate, the corresponding grinding guide portion guides the corresponding grinding contact portion to grind the rust.

[0007] Preferably, the polishing mechanism also includes a suction box arranged at the detection avoidance port of the clamping and conveying mechanism, and a suction pump arranged outside the casing, the suction box extends along the width direction of the clamping and conveying mechanism, and suction nozzles extending obliquely downward are arranged on both sides of the top of the suction box, the suction nozzles extend along the width direction of the suction box, and one end of the suction box is connected to the suction port of the suction pump through a pipeline.

[0008] Preferably, the segmented grinding assembly includes an active roller, an oscillating wheel, a grinding belt, a linear drive and a grinding motor. There are two active rollers, which are rotatably arranged at the top and bottom of the clamping and conveying mechanism respectively, and the ends of the two active rollers pass through the casing and are transmission connected; the grinding motor is arranged outside the casing, and the output shaft of the grinding motor is transmission connected to one of the active rollers; the oscillating wheel is arranged in the casing along the width direction of the clamping and conveying mechanism; the grinding belt is sleeved on the active roller and the oscillating wheel, and the grinding belt is on the outside of the oscillating wheel to form a grinding contact portion; the number of linear drives is the same as that of oscillating wheels, one end of the linear drive is rotatably connected to the inside of the casing to form a grinding guide portion, and the output shaft of the linear drive is rotatably connected to the end of the oscillating wheel.

[0009] Preferably, adjacent swing wheels are staggered along the conveying direction of the clamping conveying mechanism, and an installation space for connecting the output shaft of the linear drive with the swing wheel is formed between the separated swing wheels.

[0010] Preferably, the segmented grinding assembly also includes a fixed rod, a guide wheel and a connecting rod. The fixed rod is fixedly arranged in the casing, and the fixed rod extends along the width direction of the clamping and conveying mechanism. The guide wheel is rotatably arranged on the fixed rod at equal intervals. The grinding belt sleeve is arranged on the active roller, the swing wheel and the grinding belt. One end of the connecting rod is rotatably connected to the fixed rod, and the other end of the connecting rod is rotatably connected to the guide wheel. When the swing wheel is deflected relative to the fixed rod, it can guide the grinding belt to contact the surface of the plate. A long support is arranged at the end of the output shaft of the linear drive, and the swing wheel is rotatably arranged in the long support. When the linear drive is started, the long support drives the swing wheel to deflect relative to the fixed rod.

[0011] Preferably, the segmented grinding assembly further comprises a tensioner arranged in the housing, the tensioner having a tensioning contact surface elastically abutting against the inner side of the grinding belt in the horizontal direction, and when the swing wheel deflects relative to the fixed rod, the grinding belt is always taut.

[0012] Preferably, the tensioner includes a cross bar, a tensioning seat, a tensioning wheel and an elastic element. The cross bar is arranged in the housing, and the cross bar extends along the width direction of the clamping and conveying mechanism. The tensioning seat is arranged on one side of the cross bar along the length direction of the cross bar. A connecting rod that passes through the cross bar and slides with the cross bar is provided at one end of the tensioning seat. The tensioning wheel is rotatably arranged in the tensioning seat, and the tensioning wheel abuts against the inner side of the grinding belt. The elastic element is arranged between the tensioning seat and the cross bar.

[0013] Preferably, the grinding mechanism further comprises a chip suction box arranged in the housing, the chip suction box extends along the length direction of the active roller, one end of the chip suction box is connected to the suction port of the suction pump, and the chip suction box has a suction port facing the outside of the grinding belt.

[0014] Preferably, the inner wall of the casing is provided with fixed disks located at both ends of the active roller, and a guide groove is provided at one end of the fixed disk facing the active roller, the guide groove has a large arc section, an inclined groove section and a radial section connected in sequence, the radial section extends along the radial direction of the fixed disk and is located at the top of the guide groove, and the circumferential surface of the active roller is provided with mounting grooves distributed along its circumference, the mounting groove extends along the radial direction of the active roller, and a sliding bar is also provided in the mounting groove, and an elastic reset element is provided between the sliding bar and the groove bottom of the mounting groove, and guide columns extending along the length direction of the sliding bar are provided at both ends of the sliding bar, the guide columns extend into the guide groove and slide with the guide groove, and after the guide columns slide from the inclined groove section to the radial section, the outer end of the sliding bar strikes the inner side of the grinding belt along the radial direction of the active roller.

[0015] A high-precision sheet metal part bending processing front surface grinding method adopts a high-precision sheet metal part bending processing front surface grinding mechanism, including the following steps:

[0016] Step 1: Place the plate into the housing, and the plate is clamped by the clamping and conveying mechanism and sent through the working area of ​​the visual inspection camera and the segmented grinding component.

[0017] Step 2: The visual inspection camera takes pictures of both sides of the plate and sends the information to the main controller;

[0018] Step three, the main controller starts the corresponding grinding guide part to guide the corresponding grinding contact part to grind the rust.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This application can realize automatic detection and defect recognition of the plate surface through the equipped visual inspection camera, ensuring that in the subsequent grinding process, the system can deal with local defects on the plate surface, such as rust or scratches, in a targeted manner. This automated defect detection improves production efficiency and reduces errors caused by manual inspection.

[0021] Secondly, the design of the segmented grinding component makes the grinding operation more flexible and precise. Each grinding contact part can be accurately positioned and moved along the surface of the plate through the grinding guide part. This design can adapt to different plate widths and different grinding requirements, thereby achieving higher grinding uniformity and quality. Since the grinding contact part can adjust the grinding force and position according to the specific conditions of the plate, it avoids the problems of over-grinding or uneven grinding that may occur in traditional grinding methods, thereby effectively extending the service life of the plate.

[0022] The design of the inspection clearance and grinding clearance of the clamping conveyor mechanism further improves the overall efficiency and reliability of the system. The inspection clearance enables the visual inspection camera to monitor the status of the upper and lower surfaces of the sheet in all directions without being hindered by the conveyor structure. The design of the grinding clearance ensures that the grinding contact part can pass smoothly and the surface of the sheet is fully polished, avoiding grinding dead corners or missed grinding caused by structural limitations. This all-round grinding coverage design greatly improves the surface treatment quality of sheet metal parts.

[0023] Finally, the grinding mechanism has a high degree of automation and can perform grinding immediately after a problem is found, significantly reducing the need for manual intervention and improving the continuity and stability of the production line. By reducing human operating errors and optimizing the grinding process, the equipment can not only improve production efficiency but also reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the pre-surface grinding mechanism for high-precision sheet metal bending processing.

[0025] Figure 2It is a three-dimensional cross-sectional view of the front surface grinding mechanism of high-precision sheet metal bending processing.

[0026] Figure 3 It is a cross-sectional view of the pre-surface grinding mechanism for high-precision sheet metal bending processing.

[0027] Figure 4 It is a front view of the segmented grinding component in the front surface grinding mechanism of high-precision sheet metal bending processing.

[0028] Figure 5 It is a stereoscopic image of the segmented grinding components in the front surface grinding mechanism of high-precision sheet metal bending processing from the first perspective.

[0029] Figure 6 It is a stereoscopic image of the segmented grinding components in the front surface grinding mechanism of high-precision sheet metal bending processing from the second perspective.

[0030] Figure 7 It is a three-dimensional image of the segmented grinding component in the front surface grinding mechanism of high-precision sheet metal bending processing under the third viewing angle.

[0031] Figure 8 It is a three-dimensional diagram of the active roller and fixed plate in the front surface grinding mechanism of high-precision sheet metal bending processing.

[0032] Fig. 9 It is a side view of the active roller and fixed plate in the front surface grinding mechanism of high-precision sheet metal bending processing.

[0033] Fig.10 It is a front view of the fixed plate in the front surface grinding mechanism of high-precision sheet metal bending processing.

[0034] The numbers in the figure are: 1. casing; 2. clamping and conveying mechanism; 3. visual inspection camera; 4. segmented grinding assembly; 41. active roller; 42. swing wheel; 43. grinding belt; 44. linear drive; 45. grinding motor; 46. fixed rod; 47. guide wheel; 48. connecting rod; 491. cross bar; 492. tensioning seat; 493. tensioning wheel; 494. elastic element; 5. suction box; 51. suction nozzle; 6. plate; 7. chip suction box; 81. fixed plate; 812. large arc segment; 813. inclined groove segment; 814. radial segment; 82. sliding bar; 821. guide column; 83. elastic reset element. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, this application provides:

[0037] A pre-surface grinding mechanism for high-precision sheet metal bending processing comprises a housing 1 and a clamping and conveying mechanism 2 horizontally arranged in the housing 1, the clamping and conveying mechanism 2 having a feeding end and a discharging end arranged in a horizontal direction, the grinding mechanism also comprising two visual inspection cameras 3 arranged at the top and bottom of the feeding end of the clamping and conveying mechanism 2, and two segmented grinding assemblies 4 symmetrically arranged at the upper and lower ends of the clamping and conveying mechanism 2, the segmented grinding assembly 4 having a grinding contact portion for discharging along the width direction of the plate 6, and a grinding guide portion correspondingly connected to each grinding contact portion, the grinding guide portion being able to guide the grinding contact portion to move toward the surface of the plate 6, the clamping and conveying mechanism 2 having a detection avoidance opening for the two visual inspection cameras 3 to detect the upper and lower surfaces of the plate 6, and a grinding avoidance opening for the grinding contact portion to pass through to grind the surface of the plate 6, the grinding avoidance opening extending along the width direction of the clamping and conveying mechanism 2, after the visual inspection camera 3 detects local rust on the surface of the plate 6, the corresponding grinding guide portion guides the corresponding grinding contact portion to grind the rust.

[0038] The grinding mechanism comprises a stable housing 1, and a clamping and conveying mechanism 2 is horizontally arranged inside the housing 1, and the mechanism is responsible for stably conveying the plate 6 to the grinding area.

[0039] The clamping and conveying mechanism 2 is provided with a feed end and a discharge end, both arranged in the horizontal direction. The plate 6 enters from the feed end and is stably conveyed to the discharge end under the action of the clamping and conveying mechanism 2. In order to ensure the accuracy of grinding, the mechanism is also equipped with two visual inspection cameras 3, which are installed at the top and bottom of the feed end respectively. These two cameras are responsible for real-time detection of the upper and lower surfaces of the plate 6, identifying any surface defects such as rust or scratches, so as to carry out targeted grinding treatment.

[0040] Two symmetrically arranged segmented grinding assemblies 4 are designed at the upper and lower ends of the clamping and conveying mechanism 2. These grinding assemblies have grinding contact parts arranged along the width direction of the plate 6, and each grinding contact part is connected to a corresponding grinding guide part. The grinding guide part plays a key role in the grinding process, and it can accurately guide the grinding contact part to move toward the surface of the plate 6, thereby ensuring the uniformity and depth of grinding.

[0041] The clamping and conveying mechanism 2 also includes a detection avoidance opening and a grinding avoidance opening. The detection avoidance opening is designed in the conveying mechanism to allow the visual inspection camera 3 to detect the upper and lower surfaces of the plate 6 without obstruction. At the same time, the grinding avoidance opening extends along the width direction of the clamping and conveying mechanism 2, allowing the grinding contact part to pass smoothly and contact the surface of the plate 6 for grinding. This design ensures that a uniform grinding operation can be performed over the entire width of the plate 6.

[0042] When the visual inspection camera 3 identifies local rust on the surface of the plate 6, the system automatically activates the corresponding grinding guide. This grinding guide accurately guides the grinding contact part to which it is connected, quickly and accurately grinding the rusted part to eliminate surface defects and ensure that the surface finish and quality of the plate 6 meet the requirements of high-precision processing. Through such a design, the grinding mechanism can not only effectively improve the processing quality of sheet metal parts, but also significantly reduce the scrap rate caused by surface defects.

[0043] The polishing mechanism can realize automatic detection and defect recognition of the surface of the plate 6 by means of the equipped visual detection camera 3, ensuring that in the subsequent polishing process, the system can specifically handle local defects, such as rust or scratches, on the surface of the plate 6. This automated defect detection improves production efficiency and reduces errors caused by manual inspection.

[0044] Secondly, the design of the segmented grinding assembly 4 makes the grinding operation more flexible and accurate. Each grinding contact portion can be accurately positioned and moved along the surface of the plate 6 through the grinding guide portion. This design can adapt to different plate 6 widths and different grinding requirements, thereby achieving higher grinding uniformity and quality. Since the grinding contact portion can adjust the grinding force and position according to the specific situation of the plate 6, the problem of over-grinding or uneven grinding that may occur in the traditional grinding method is avoided, thereby effectively extending the service life of the plate 6.

[0045] The design of the inspection avoidance and grinding avoidance of the clamping conveying mechanism 2 further improves the overall efficiency and reliability of the system. The inspection avoidance enables the visual inspection camera 3 to monitor the status of the upper and lower surfaces of the plate 6 in all directions without being hindered by the conveying mechanism structure. The design of the grinding avoidance ensures that the grinding contact part can pass smoothly and the surface of the plate 6 is fully polished, avoiding grinding dead corners or missed grinding caused by structural limitations. This all-round grinding coverage design greatly improves the surface treatment quality of sheet metal parts.

[0046] Finally, the grinding mechanism has a high degree of automation and can perform grinding immediately after a problem is found, significantly reducing the need for manual intervention and improving the continuity and stability of the production line. By reducing human operating errors and optimizing the grinding process, the equipment can not only improve production efficiency but also reduce production costs.

[0047] Local grinding has several advantages.

[0048] Save time and cost: Local grinding only needs to deal with the rusted area, rather than the entire sheet surface. This greatly reduces the time and labor costs required, while also saving on abrasives and tool consumption.

[0049] Reduce material loss: Thin plates are usually thinner, and full grinding may cause material thickness reduction, especially in areas that are already thin. Local grinding can effectively avoid this and protect the overall structural integrity of the thin plate.

[0050] Maintaining the surface consistency of thin panels: Full sanding may result in uneven texture or gloss differences on the surface of thin panels, while local sanding can maintain the original surface characteristics as much as possible, reducing the need for secondary processing or surface repair.

[0051] Reduce the risk of deformation: Grinding the entire sheet will increase the area where heat is generated, which may cause uneven heating of the sheet and cause deformation. Local grinding is controlled in a smaller area, which helps to reduce heat accumulation and thus reduce the risk of deformation.

[0052] like Figure 4 As shown, the grinding mechanism also includes a suction box 5 arranged at the detection avoidance port of the clamping and conveying mechanism 2, and a suction pump arranged outside the casing 1, the suction box 5 extends along the width direction of the clamping and conveying mechanism 2, and suction nozzles 51 extending obliquely downward are arranged on both sides of the top of the suction box 5, and the suction nozzles 51 extend along the width direction of the suction box 5, and one end of the suction box 5 is connected to the suction port of the suction pump through a pipeline.

[0053] The design of the grinding mechanism also includes a suction box 5 arranged at the detection avoidance port of the clamping and conveying mechanism 2 and a suction pump installed outside the housing 1. The suction box 5 extends along the width direction of the clamping and conveying mechanism 2 to ensure that it can cover the entire width of the plate 6, thereby effectively handling the dust and particles generated during the grinding process. Suction nozzles 51 extending obliquely downward are installed on both sides of the top of the suction box 5. These suction nozzles 51 also extend along the width direction of the suction box 5 to ensure that the waste generated during grinding can be efficiently adsorbed and collected in the entire grinding area. In order to achieve an efficient suction effect, one end of the suction box 5 is connected to the suction port of the external suction pump through a pipeline. The suction pump quickly sucks the tiny particles and dust generated during the grinding process into the suction box 5 by generating a strong airflow, thereby keeping the grinding area clean. This design not only helps to maintain the cleanliness of the working environment and reduce the impact of dust on equipment and operators, but also prevents dust from adhering to the surface of the plate 6 again, thereby improving the surface quality and processing accuracy of the final product. In addition, the setting of the suction pump makes the entire suction system more efficient, ensuring that strong suction can be maintained during high-speed grinding, thereby ensuring that grinding waste can be removed in time, further improving the overall performance and reliability of the grinding mechanism.

[0054] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the segmented grinding assembly 4 includes a driving roller 41, a swing wheel 42, a grinding belt 43, a linear drive 44 and a grinding motor 45.

[0055] There are two active rollers 41, which are rotatably arranged at the top and bottom of the clamping and conveying mechanism 2, respectively. The ends of the two active rollers 41 penetrate the housing 1 and are transmission-connected.

[0056] The grinding motor 45 is arranged outside the housing 1, and the output shaft of the grinding motor 45 is drivingly connected to one of the driving rollers 41;

[0057] The swing wheel 42 is arranged in the housing 1 along the width direction of the clamping and conveying mechanism 2;

[0058] The grinding belt 43 is sleeved on the active roller 41 and the swing wheel 42, and the grinding belt 43 is located outside the swing wheel 42 to form a grinding contact portion;

[0059] The number of the linear drive 44 is the same as that of the swing wheel 42 . One end of the linear drive 44 is rotatably connected to the housing 1 to form a grinding guide. The output shaft of the linear drive 44 is rotatably connected to the end of the swing wheel 42 .

[0060] The segmented grinding assembly 4 includes two active rollers 41, a swing wheel 42, a grinding belt 43, a linear drive 44 and a grinding motor 45. The two active rollers 41 are respectively mounted on the top and bottom of the clamping and conveying mechanism 2, and are connected to the system through rotation. The ends of the active rollers 41 pass through the housing 1, making the power transmission more stable. The grinding motor 45 is arranged outside the housing 1, and its output shaft is directly connected to one of the active rollers 41, thereby providing driving force for the entire grinding system. The swing wheels 42 are arranged inside the housing 1 along the width direction of the clamping and conveying mechanism 2, and are evenly distributed to ensure that the grinding belt 43 can run smoothly. The grinding belt 43 is tightly sleeved on the active roller 41 and the swing wheel 42, and a grinding contact portion is formed on the outer side of the swing wheel 42, which directly contacts the surface of the plate 6 during the actual grinding process. In order to achieve precise local grinding operations, the system is equipped with the same number of linear drives 44 as the swing wheels 42. One end of the linear drive 44 is connected to the inner wall of the housing 1 through a rotating mechanism to form a grinding guide. This design can ensure that the swing wheel 42 maintains stable linear motion during the grinding process. The output shaft of the linear drive 44 is connected to the end of the swing wheel 42, so that the swing wheel 42 can accurately adjust its position according to the processing requirements, thereby achieving high-precision grinding operations. The overall design achieves uniform grinding of the surface of the plate 6 through precise coordination between the various components, thereby improving the processing quality and efficiency.

[0061] like Figure 6 and Figure 7As shown, adjacent swing wheels 42 are staggered along the conveying direction of the clamping conveying mechanism 2 , and an installation space for connecting the output shaft of the linear drive 44 with the swing wheel 42 is formed between the separated swing wheels 42 .

[0062] Adjacent swing wheels 42 are arranged in a staggered manner in the conveying direction of the clamping conveying mechanism 2. This arrangement effectively utilizes the space and ensures that a reasonable spacing is formed between each swing wheel 42. These spacings not only provide space for the free movement of the swing wheel 42, but also form a special installation space for installing the output shaft of the linear drive 44 and connecting it to the swing wheel 42. This design allows the output shaft of the linear drive 44 to be smoothly connected to each swing wheel 42, ensuring that the swing wheel 42 can perform stable linear motion along a predetermined path during operation. Due to the staggered arrangement of the swing wheels 42, the system can install more swing wheels 42 and drives in a limited space, so that the grinding belt 43 can better cover the surface of the plate 6 and improve the grinding efficiency and accuracy. In addition, the reasonable design of the installation space ensures that the linear drive 44 will not be interfered with by adjacent components when performing complex movements, ensuring the stability and durability of the entire grinding system, thereby improving the overall performance of the processing technology.

[0063] like Figure 4 As shown, the segmented grinding assembly 4 also includes a fixed rod 46, a guide wheel 47 and a connecting rod 48. The fixed rod 46 is fixedly arranged in the housing 1, and the fixed rod 46 extends along the width direction of the clamping and conveying mechanism 2. The guide wheel 47 is rotatably arranged on the fixed rod 46 at equal intervals. The grinding belt 43 is sleeved on the active roller 41, the swing wheel 42 and the guide wheel 47. One end of the connecting rod 48 is rotatably connected to the fixed rod 46, and the other end of the connecting rod 48 is rotatably connected to the guide wheel 47. When the swing wheel 42 is deflected relative to the fixed rod 46, it can guide the grinding belt 43 to contact the surface of the plate 6. A long support is arranged at the end of the output shaft of the linear drive 44, and the swing wheel 42 is rotatably arranged in the long support. When the linear drive 44 is started, the long support drives the swing wheel 42 to deflect relative to the fixed rod 46.

[0064] The segmented grinding assembly 4 also includes a fixed rod 46, a guide wheel 47 and a connecting rod 48. The fixed rod 46 is firmly installed inside the housing 1 and extends along the width direction of the clamping and conveying mechanism 2. Such a design ensures the structural stability of the grinding system and the consistency of operation. The guide wheel 47 is rotatably arranged on the fixed rod 46 in an equidistant manner to ensure that the grinding belt 43 can run smoothly during the grinding process. The grinding belt 43 is sleeved on the active roller 41, the swing wheel 42 and the guide wheel 47. Through the coordinated work of these components, the surface of the plate 6 is uniformly ground. One end of the connecting rod 48 is rotatably connected to the fixed rod 46. Such a connection mode enables the connecting rod 48 to rotate freely on the basis of the fixed rod 46 to adapt to different grinding requirements. The other end of the connecting rod 48 is rotatably connected to the guide wheel 47, so that the position and angle of the guide wheel 47 on the fixed rod 46 can be adjusted according to the running state of the grinding belt 43, ensuring that the grinding belt 43 is always closely attached to the surface of the plate 6. When the swing wheel 42 deflects relative to the fixed rod 46, the grinding belt 43 can be effectively guided to contact the surface of the plate 6 by adjusting the guide wheel 47, thereby ensuring the accuracy and efficiency of the grinding process. A long support is provided at the end of the output shaft of the linear drive 44, and the swing wheel 42 is fixed on the long support by a rotating mechanism. When the linear drive 44 is started, the long support drives the swing wheel 42 to deflect relative to the fixed rod 46. This design enables the grinding belt 43 to flexibly adjust the contact angle with the surface of the plate 6 to adapt to different grinding process requirements, thereby improving the uniformity and quality of the grinding effect.

[0065] like Figure 4 As shown, the segmented grinding assembly 4 also includes a tensioner arranged in the housing 1, and the tensioner has a tensioning contact surface elastically abutting against the inner side of the grinding belt 43 in the horizontal direction. When the swing wheel 42 deflects relative to the fixed rod 46, the grinding belt 43 is always taut.

[0066] The segmented grinding assembly 4 also includes a tensioner installed in the housing 1. The tensioner is designed to ensure that the grinding belt 43 always maintains appropriate tension during operation. The core component of the tensioner is a tensioning contact surface that can be elastically moved in the horizontal direction. This tensioning contact surface contacts the inner side of the grinding belt 43 and adjusts the tension of the grinding belt 43 through elastic abutment. During the grinding operation, when the swing wheel 42 deflects relative to the fixed rod 46, the running path of the grinding belt 43 may change slightly, resulting in unstable tension, and the tensioner is designed to solve this problem. No matter how the swing wheel 42 deflects, the tensioner can apply appropriate pressure to the grinding belt 43 through its elastic structure to ensure that the grinding belt 43 always remains in a taut state, thereby avoiding the grinding effect being affected by the loosening of the grinding belt 43. This design of the tensioner not only improves the accuracy and stability of the grinding process, but also extends the service life of the grinding belt 43, because the grinding belt 43 that always maintains appropriate tension is more evenly stressed during operation and has less wear. Therefore, the tensioner plays a key role in the entire segmented grinding assembly 4. By maintaining the tension of the grinding belt 43, the efficiency and consistency of the grinding operation are ensured, thereby making the grinding of the surface of the plate 6 more uniform, further improving the processing quality of the product.

[0067] like Figure 5 As shown, the tensioner includes a cross bar 491, a tensioning seat 492, a tensioning wheel 493 and an elastic element 494. The cross bar 491 is arranged in the housing 1, and the cross bar 491 extends along the width direction of the clamping and conveying mechanism 2. The tensioning seat 492 is arranged on one side of the cross bar 491 along the length direction of the cross bar 491. One end of the tensioning seat 492 is provided with a connecting rod that passes through the cross bar 491 and slides with it. The tensioning wheel 493 is rotatably arranged in the tensioning seat 492, and the tensioning wheel 493 abuts against the inner side of the grinding belt 43. The elastic element 494 is arranged between the tensioning seat 492 and the cross bar 491.

[0068] The tensioner includes a cross bar 491, a tensioning seat 492, a tensioning wheel 493 and an elastic element 494. The cross bar 491 is arranged in the housing 1 and extends along the width direction of the clamping and conveying mechanism 2. This arrangement ensures that the tensioner can cover the entire width of the grinding belt 43, thereby applying uniform tension to the entire grinding belt 43. The tensioning seat 492 is arranged on one side of the cross bar 491 along the length direction of the cross bar 491. One end of the tensioning seat 492 is equipped with a connecting rod that penetrates the cross bar 491 and slides with the cross bar 491. This sliding connection allows the tensioning seat 492 to move flexibly on the cross bar 491, so that it can be accurately adjusted according to the actual tension requirement of the grinding belt 43. The tensioning wheel 493 is rotatably arranged in the tensioning seat 492, tightly abutting against the inner side of the grinding belt 43. Through the rotation of the tensioning wheel 493, continuous tension can be maintained when the grinding belt 43 is running. In order to further enhance the elastic adjustment function of the tensioner, the elastic element 494 is arranged between the tensioning seat 492 and the cross bar 491. When the tensioning wheel 493 is displaced with the movement of the grinding belt 43, the elastic element 494 can provide appropriate restoring force to push the tensioning seat 492 back to the appropriate position, thereby ensuring that the tensioning wheel 493 always applies uniform pressure. Such a design allows the grinding belt 43 to maintain the best tension state during the entire processing process, avoiding the problem of uneven grinding or reduced efficiency due to uneven tension. Therefore, the tensioner plays a vital role in the segmented grinding assembly 4, ensuring the stable operation of the grinding belt 43, and ultimately improving the overall quality of the surface processing of the plate 6.

[0069] like Figure 7 As shown, the grinding mechanism also includes a chip suction box 7 arranged in the housing 1, which extends along the length direction of the active roller 41. One end of the chip suction box 7 is connected to the suction port of the suction pump, and the chip suction box 7 has a suction port facing the outside of the grinding belt 43.

[0070] The grinding mechanism also includes a dust suction box 7 installed in the housing 1. The dust suction box 7 extends along the length direction of the active roller 41. This design ensures that the dust and debris in the entire grinding area can be effectively collected to prevent them from being scattered into the external environment. One end of the dust suction box 7 is connected to the suction port of the suction pump through a pipeline. The negative pressure generated by the suction pump allows the dust and fine debris generated during the grinding process to be quickly sucked into the dust suction box 7 to avoid contamination of the grinding belt 43 and other mechanical parts. In addition, the dust suction box 7 itself is designed with a suction port facing the outside of the grinding belt 43. The suction port is arranged close to the grinding belt 43, ensuring that during the high-speed operation of the grinding belt 43, dust and debris can be sucked into the dust suction box 7 at the first time. This design not only effectively improves the cleanliness of the grinding process, but also prevents the influence of dust accumulation on the grinding effect and equipment operation, further prolongs the service life of the equipment, and also reduces the complexity of subsequent cleaning work, thereby making the entire grinding process more efficient and environmentally friendly.

[0071] like Figure 8 , Fig. 9 and Fig.10 As shown, the inner wall of the casing 1 is provided with fixed disks 81 located at both ends of the active roller 41, and a guide groove is provided at one end of the fixed disk 81 facing the active roller 41, and the guide groove has a large arc segment 812, an inclined groove segment 813 and a radial segment 814 connected in sequence, and the radial segment 814 extends along the radial direction of the fixed disk 81 and is located at the top of the guide groove, and the circumferential surface of the active roller 41 is provided with mounting grooves distributed along its circumference, and the mounting groove extends along the radial direction of the active roller 41, and a sliding bar 82 is also provided in the mounting groove, and an elastic reset element 83 is provided between the sliding bar 82 and the groove bottom of the mounting groove, and guide columns 821 extending along the length direction of the sliding bar 82 are provided at both ends of the sliding bar 82, and the guide column 821 extends into the guide groove and slidably cooperates with the guide groove, and after the guide column 821 slides from the inclined groove segment 813 to the radial segment 814, the outer end of the sliding bar 82 knocks the inner side of the grinding belt 43 along the radial direction of the active roller 41.

[0072] A fixed plate 81 is provided at both ends of the inner wall of the housing 1. A guide groove is provided at one end of the fixed plate 81 close to the active roller 41. The guide groove is composed of a connected large arc segment 812, an inclined groove segment 813 and a radial segment 814. The radial segment 814 extends along the radial direction of the fixed plate 81 and is located at the top of the guide groove. A plurality of mounting grooves are evenly distributed along the circumference of the active roller 41. The mounting grooves extend along the radial direction of the active roller 41, and a sliding bar 82 is provided in each mounting groove. A guide column 821 extending along the length direction thereof is provided at both ends of the sliding bar 82. The guide column 821 extends into the guide groove and slides with the guide groove. An elastic reset element 83 is arranged between the groove bottom of the mounting groove and the sliding bar 82. This design enables the sliding bar 82 to move freely along the radial direction of the mounting groove under the guidance of the guide column 821. When the guide post 821 slides from the bottom of the chute section 813 to the bottom of the radial section 814, the elastic reset element 83 is gradually compressed in the process; once the guide post 821 reaches the bottom of the radial section 814, the compressed elastic reset element 83 releases the stored energy, so that the slide bar 82 moves outward rapidly along the radial direction of the active roller 41. This movement mode enables the slide bar 82 to strike the inner side of the grinding belt 43 forcefully, thereby separating the waste chips attached to the grinding belt 43. Through this striking movement, the debris on the grinding belt 43 can be effectively removed, avoiding the accumulation of waste chips and affecting the grinding effect, and also helps to improve the overall working efficiency and life of the grinding device.

[0073] A high-precision sheet metal part bending processing front surface grinding method adopts a high-precision sheet metal part bending processing front surface grinding mechanism, including the following steps:

[0074] Step 1: Place the plate 6 into the housing 1, and the plate 6 is clamped by the clamping and conveying mechanism 2 and sent to the working area of ​​the visual inspection camera 3 and the segmented grinding assembly 4.

[0075] Step 2: The visual inspection camera 3 takes pictures of both sides of the plate 6 and sends the information to the main controller;

[0076] Step three, the main controller starts the corresponding grinding guide part to guide the corresponding grinding contact part to grind the rust.

[0077] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-precision sheet metal part bending processing front surface grinding mechanism, comprising a housing (1), and a clamping and conveying mechanism (2) horizontally arranged in the housing (1), the clamping and conveying mechanism (2) having a feeding end and a discharging end arranged in a horizontal direction, characterized in that: The grinding mechanism further comprises two visual inspection cameras (3) arranged at the top and bottom of the feeding end of the clamping and conveying mechanism (2), and two segmented grinding assemblies (4) symmetrically arranged at the upper and lower ends of the clamping and conveying mechanism (2), the segmented grinding assembly (4) having a grinding contact portion for discharging along the width direction of the plate (6), and a grinding guide portion correspondingly connected to each grinding contact portion, the grinding guide portion being capable of guiding the grinding contact portion to move toward the surface of the plate (6), the clamping and conveying mechanism (2) having a detection avoidance opening for allowing the two visual inspection cameras (3) to detect the upper and lower surfaces of the plate (6), and a grinding avoidance opening for allowing the grinding contact portion to pass through to grind the surface of the plate (6), the grinding avoidance opening extending along the width direction of the clamping and conveying mechanism (2), and after the visual inspection camera (3) detects local rust on the surface of the plate (6), the corresponding grinding guide portion guides the corresponding grinding contact portion to grind the rust; The segmented grinding assembly (4) comprises a driving roller (41), an oscillating wheel (42), a grinding belt (43), a linear drive (44) and a grinding motor (45). There are two active rollers (41), which are rotatably arranged at the top and bottom of the clamping and conveying mechanism (2), respectively, and the ends of the two active rollers (41) penetrate the casing (1) and are transmission-connected; The grinding motor (45) is arranged outside the housing (1), and the output shaft of the grinding motor (45) is drivingly connected to one of the driving rollers (41); The swing wheel (42) is arranged in the housing (1) along the width direction of the clamping and conveying mechanism (2); The grinding belt (43) is sleeved on the active roller (41) and the swing wheel (42), and the grinding belt (43) is located outside the swing wheel (42) to form a grinding contact portion; The number of the linear drive (44) and the swing wheel (42) is the same, one end of the linear drive (44) is rotatably connected to the housing (1) to form a grinding guide, and the output shaft of the linear drive (44) is rotatably connected to the end of the swing wheel (42); The segmented grinding assembly (4) further comprises a fixed rod (46), a guide wheel (47) and a connecting rod (48), wherein the fixed rod (46) is fixedly arranged in the housing (1), the fixed rod (46) extends along the width direction of the clamping and conveying mechanism (2), the guide wheel (47) is rotatably arranged on the fixed rod (46) at equal intervals, the grinding belt (43) is sleeved on the active roller (41), the swing wheel (42) and the guide wheel (47), one end of the connecting rod (48) is rotatably connected to the fixed rod (46), and the other end of the connecting rod (48) is rotatably connected to the guide wheel (47), and when the swing wheel (42) deflects relative to the fixed rod (46), it can guide the grinding belt (43) to contact the surface of the plate (6), and a long support is arranged at the end of the output shaft of the linear drive (44), and the swing wheel (42) is rotatably arranged in the long support, and when the linear drive (44) is started, the long support drives the swing wheel (42) to deflect relative to the fixed rod (46); The segmented grinding assembly (4) further comprises a tensioner arranged in the housing (1), the tensioner having a tensioning contact surface elastically abutting against the inner side of the grinding belt (43) in a horizontal direction, and when the swing wheel (42) deflects relative to the fixed rod (46), the grinding belt (43) is always taut.

2. The high-precision sheet metal part bending pre-surface grinding mechanism according to claim 1 is characterized in that: The polishing mechanism further comprises a suction box (5) arranged at a detection avoidance port of the clamping and conveying mechanism (2), and a suction pump arranged outside the housing (1); the suction box (5) extends along the width direction of the clamping and conveying mechanism (2); suction nozzles (51) extending obliquely downward are arranged on both sides of the top end of the suction box (5); the suction nozzles (51) extend along the width direction of the suction box (5); and one end of the suction box (5) is connected to a suction port of the suction pump via a pipeline.

3. The high-precision sheet metal part bending pre-surface grinding mechanism according to claim 1 or 2, characterized in that: Adjacent swing wheels (42) are arranged in a staggered manner along the conveying direction of the clamping conveying mechanism (2), and an installation space for connecting an output shaft of a linear drive (44) and the swing wheel (42) is formed between the separated swing wheels (42).

4. The high-precision sheet metal part bending pre-surface grinding mechanism according to claim 3 is characterized in that: The tensioner comprises a cross bar (491), a tensioning seat (492), a tensioning wheel (493) and an elastic element (494); the cross bar (491) is arranged in the housing (1); the cross bar (491) extends along the width direction of the clamping and conveying mechanism (2); the tensioning seat (492) is arranged on one side of the cross bar (491) along the length direction of the cross bar (491); a connecting rod penetrating the cross bar (491) and slidably engaged with the cross bar (491) is arranged at one end of the tensioning seat (492); the tensioning wheel (493) is rotatably arranged in the tensioning seat (492); the tensioning wheel (493) abuts against the inner side of the grinding belt (43); and the elastic element (494) is arranged between the tensioning seat (492) and the cross bar (491).

5. The high-precision sheet metal part bending pre-surface grinding mechanism according to claim 4 is characterized in that: The grinding mechanism further comprises a chip suction box (7) arranged in the housing (1), the chip suction box (7) extending along the length direction of the active roller (41), one end of the chip suction box (7) being connected to a suction port of a suction pump, and the chip suction box (7) having a suction port facing the outside of the grinding belt (43).

6. The high-precision sheet metal part bending pre-surface grinding mechanism according to claim 5 is characterized in that: The inner wall of the housing (1) is provided with fixed disks (81) located at both ends of the active roller (41); a guide groove is provided at one end of the fixed disk (81) facing the active roller (41); the guide groove comprises a large arc segment (812), an inclined groove segment (813) and a radial segment (814) connected in sequence; the radial segment (814) extends in the radial direction of the fixed disk (81) and is located at the top of the guide groove; the circumferential surface of the active roller (41) is provided with mounting grooves distributed along the circumference thereof; the mounting grooves extend in the radial direction of the active roller (41); The installation groove is further provided with a sliding bar (82), an elastic reset element (83) is provided between the sliding bar (82) and the groove bottom of the installation groove, and guide posts (821) extending along the length direction of the sliding bar (82) are provided at both ends of the sliding bar (82), and the guide posts (821) extend into the guide groove and slideably cooperate with the guide groove, and after the guide posts (821) slide from the inclined groove section (813) to the radial section (814), the outer end of the sliding bar (82) strikes the inner side of the grinding belt (43) along the radial direction of the active roller (41).

7. A method for pre-surface grinding of high-precision sheet metal parts during bending, characterized in that: The high-precision sheet metal part bending processing front surface grinding mechanism as described in any one of claims 1 to 6 comprises the following steps: Step 1: Place the plate (6) into the housing (1), and use the clamping and conveying mechanism (2) to clamp the plate (6) and send it through the working area of ​​the visual inspection camera (3) and the segmented grinding component (4). Step 2: The visual inspection camera (3) takes pictures of both sides of the plate (6) and sends the information to the main controller; Step three, the main controller starts the corresponding grinding guide part to guide the corresponding grinding contact part to grind the rust.

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