Steel profile punching and trimming process and device for solar photovoltaic panel frame

Abstract

The application relates to the technical field of photovoltaic accessory production, in particular to a steel profile stamping and trimming process and device for a solar photovoltaic panel frame, which comprises profile pre-positioning, outer frame edge fine composite trimming, inner frame edge dynamic impact repair and forming unloading and storage processes; the stamping and trimming device used in the above treatment method comprises a treatment frame, a placing plate and a rear frame, the placing plate is hingedly connected with the inner wall of the treatment frame through a hinge shaft arranged inside, and multiple groups of negative pressure adsorption holes are uniformly arranged in a rectangular array on the surface of the placing plate; through the cooperative operation of the external fine trimming mechanism and the internal fine trimming mechanism, the whole-process operation of outer frame composite trimming, inner frame dynamic repair and forming unloading of the profile frame is achieved, the problems of more edge burrs, asynchronous surface and side edge treatment and incomplete inner frame flaw repair leading to size tolerance exceeding the standard in the traditional photovoltaic frame steel profile trimming process are effectively solved, and the efficiency of the profile frame is improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic accessory manufacturing technology, specifically to a process and apparatus for stamping and trimming steel profiles for solar photovoltaic panel frames. Background Technology

[0002] As the core supporting structure of photovoltaic modules, the frame of a solar photovoltaic panel plays a crucial role in protecting the photovoltaic panel, improving the structural strength of the module, and adapting to on-site installation. After the steel profile is initially stamped, burrs, flash, stamping residue, local unevenness, and slight deformation are easily generated on the inner and outer edges. If fine trimming is not performed, it will not only affect the assembly accuracy of the photovoltaic panel and the frame, but also scratch the panel and reduce the overall structural stability of the frame during subsequent transportation and use.

[0003] Currently, most existing technologies for edge trimming of photovoltaic frames suffer from drawbacks such as poor process adaptability, insufficient processing precision, cumbersome procedures, and asynchronous trimming of inner and outer frames. These limitations make it difficult to meet the high-precision, large-scale production requirements of steel photovoltaic frames. For example, reference patent CN223643393U discloses an edge trimming device for producing high-strength narrow-edge photovoltaic frames. This patent employs a split-type trimming abrasive wheel combined with an elastic extrusion limiting structure to achieve burr removal and waste cleaning on the frame surface. However, this patented technology has significant limitations:

[0004] First, it only grinds the outer surface of the frame in one direction, making it impossible to dynamically repair the unevenness and local deformation of the inner edge, and the dimensional accuracy of the inner frame cannot be guaranteed. Second, it uses local roller pressing and limiting fixation, which has a small fixed coverage area, making the steel profile prone to warping and displacement during processing, and resulting in poor edge flatness. Third, it has a single function, only having basic grinding function, and cannot realize the integrated operation of stamping and leveling, flat grinding and side edge trimming. It still requires multiple processes to be completed step by step, and there is no suitable flexible unloading structure, resulting in a high risk of secondary damage to the finished product.

[0005] In summary, existing steel profile frame trimming technologies generally suffer from pain points such as asynchronous trimming of inner and outer frames, low functional integration, unstable positioning, incomplete inner frame repair, difficulty in balancing efficiency and accuracy, and high finished product loss. The industry urgently needs an integrated process device that combines precise positioning, synchronous fine trimming of inner and outer frames, dynamic repair, and flexible unloading.

[0006] To address this technical deficiency, a solution is proposed. Summary of the Invention

[0007] The purpose of this invention is to achieve a complete process of trimming the outer frame, dynamically repairing the inner frame, and unloading the profile frame by working in tandem with the external and internal trimming mechanisms. This effectively solves the problems of excessive edge burrs, asynchronous surface and side treatment, and incomplete repair of inner frame defects that lead to excessive dimensional tolerances in the traditional trimming process of photovoltaic frame steel profiles, thereby improving the efficiency of the profile frame.

[0008] The objective of this invention can be achieved through the following technical solution: a steel profile stamping and trimming process for solar photovoltaic panel frames, specifically including the following steps:

[0009] S1: Profile pre-positioning, the profile frame that has been preliminarily stamped is placed stably in a dedicated positioning station, and the profile frame is fixed in all directions by a full-area fitting negative pressure adsorption method.

[0010] S2: Refined composite trimming of the outer frame edge. The outer edge of the profile frame that has been precisely positioned is trimmed by using a stamping trimming device to remove burrs, flash and stamping residue from the outer edge in a step-by-step and orderly manner, while simultaneously performing a smoothing trimming on the outer edge.

[0011] S3: Dynamic impact repair of inner frame edge. For the concave and convex defects, local minor deformation and sharp burrs on the inner edge of the profile frame, a dynamic cyclic impact repair method is adopted. Combined with a high-precision limit guide structure to constrain the processing trajectory, the inner edge is smoothly transitioned and the outer dimensions are accurately corrected.

[0012] S4: Unloading and Storage: Unload qualified steel profile frames that have been trimmed and finished on both the inside and outside in a smooth and bump-free manner.

[0013] The stamping and trimming device used in the above processing method includes a processing frame, a shelf, and a rear frame. The shelf is hinged to the inner wall of the processing frame through a hinge shaft that runs through it. The surface of the shelf is evenly distributed with multiple sets of negative pressure adsorption holes in a rectangular array. Each adsorption hole is connected to an external vacuum pump through a negative pressure pipeline preset inside the shelf. The rear frame is installed at the bottom of the opening side of the processing frame. An external finishing mechanism is provided inside the processing frame and on one side above the shelf. An internal finishing mechanism is provided on one side of the external finishing mechanism.

[0014] Furthermore, auxiliary rotating gears are fixedly sleeved on the rear end of the hinge shaft of the placement plate and the rear end of the drive rod of the external finishing mechanism. A transverse toothed frame is slidably sleeved on the outside of each auxiliary rotating gear, and the upper and lower inner walls of the transverse toothed frame 202 are staggered with tooth sets. The two sets of transverse toothed frames are arranged in parallel with staggered upper and lower sides, and are connected together with a longitudinal sliding frame. A directional turntable is movably installed at the front end of the longitudinal sliding frame, and a single-axis drive motor is provided between the directional turntable and the rear end of the processing frame. An eccentric abutment is provided at the rear end of the directional turntable and in the area corresponding to the longitudinal sliding frame, and the longitudinal sliding frame is movably sleeved on the outside of the eccentric abutment.

[0015] Furthermore, the external finishing mechanism includes a rotating rod hinged inside the processing frame away from the opening end, and a linkage connecting rod is fixedly sleeved at the front and rear ends of the rotating rod. A movable frame is slidably installed at the bottom of the two sets of linkage connecting rods, and a telescopic cylinder is provided between the top side of the movable frame and the rotating rod. A dual-axis drive motor is provided at the center of one side of the inner cavity of the movable frame, and a lead screw with opposite spiral patterns is fixedly installed on the output shaft of the dual-axis drive motor. A movable block is threadedly sleeved at the end of the two sets of lead screws, and a grinding plate is fixedly installed at the bottom of the front and rear sets of movable blocks.

[0016] Inside the movable frame, a sliding plate is slidably installed at the end away from the dual-axis drive motor. The center position of one side of the sliding plate is hinged to two sets of lead screws with inclined linkage rods. Two sets of wedge-shaped blocks are fixedly installed at the middle section of the bottom of the sliding plate.

[0017] Furthermore, a pressure plate is movably installed at the bottom of the movable frame and at the offset position from the movable plate. Guide rods are longitudinally installed at the front and rear ends of the top of the pressure plate, and the top of the guide rods extends through to the upper end of the movable frame and is fitted with a pressure buffer spring ring. The pressure plate extends forward and backward and exceeds the outer frame edge of the movable frame, and a wedge-shaped abutment block two that matches the structure of the wedge-shaped abutment block one is provided at the center of the top surface of the pressure plate.

[0018] Furthermore, the front and rear ends of the pressure plate are respectively slidably sleeved with longitudinally arranged side grinding plates, and a sliding shaft is provided in the overlapping area of ​​the side grinding plates and the pressure plate. The sliding shaft is slidably engaged with the long groove provided at the end of the pressure plate, and a spring damping shock absorber is provided between the sliding shaft and the inner wall of the long groove.

[0019] Furthermore, the built-in precision repair mechanism includes a single-axis drive motor II located at the center of one side of the moving frame, and a rotating plate is fixedly installed at the output end of the single-axis drive motor II. Sliding frames I and II are respectively hinged on both sides of the rotating plate, and sliding frames I and II are arranged symmetrically with a front-to-back offset. The two ends of the rotating plate are respectively hinged to the top frame of sliding frame I and the bottom frame of sliding frame II via hinge rods. A double-rail limiting sliding frame is embedded in the top center of sliding frames I and II, and the end of the double-rail limiting sliding frame is fixedly connected to the moving frame.

[0020] Furthermore, concave upright frames are fixedly installed at the center of the back side of the sliding frame one and the sliding frame two, and a repair abutment cylinder is passed through the open end of the concave upright frame. The upper and lower shafts of the repair abutment cylinder pass through the upper and lower frames of the concave upright frame, respectively. The top shafts of the two sets of repair abutment cylinders are movably sleeved with inclined lifting frames, and the front and rear ends of the lifting frames are provided with matching sliding grooves. The shafts and sliding grooves form a sliding connection. A lifting cylinder is provided between the bottom of the lifting frame and the top surface of the double-rail limiting sliding frame.

[0021] Furthermore, the rear frame is symmetrically slidably connected to two sides inside, and spring damping shock absorbers are provided between the front and rear ends of the two sets of clamping frames and the corresponding inner wall of the rear frame.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. Precise positioning at each stage: This invention first uses a rectangular array of negative pressure adsorption holes on the surface of the shelf, combined with an external vacuum pump to form a full-area fitting negative pressure fixation, achieving all-round, dead-angle-free fastening of the initially stamped steel profile frame; then, through a single-axis drive motor combined with an eccentric abutment shaft, longitudinal sliding frame, transverse toothed frame and auxiliary rotating gear linkage structure, the shelf and external precision repair mechanism are synchronously reversed and flipped, completing the processing station switching and position calibration in one go; finally, after processing, the shelf automatically tilts and unloads, and with the beveled clamp frame with spring damping shock absorber in the rear frame, the profile frame after unloading is dynamically and flexibly limited, avoiding secondary damage such as bumps, scratches, and deformation during unloading.

[0024] 2. This invention features an external finishing mechanism that integrates stamping and flattening, flat burr grinding, and vertical side trimming into a single actuator. A dual-axis drive motor drives a reverse lead screw to operate synchronously, enabling the simultaneous execution of three actions: lateral feeding of the grinding plate, pressing down of the pressure plate, and adaptive fitting of the side grinding plate. This significantly improves the efficiency of traditional multi-step processing, allowing for comprehensive trimming of the outer frame in a single process, thus increasing the processing capacity per unit time.

[0025] 3. This invention features a built-in precision repair mechanism. A single-axis drive motor rotates the rotating plate, driving two sets of sliding frames to slide back and forth along the double-rail limiting sliding frame. This causes the repair cylinder to form an alternating dynamic impact trajectory, precisely fitting different side walls of the inner frame. This achieves surface contact rolling flattening and capillary polishing, completely eliminating inner frame concave and convex defects, minor deformations, and sharp burrs. The repair effect is far superior to traditional single-point polishing. Attached Figure Description

[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a rear view of the processing frame of the present invention;

[0029] Figure 3 This is a three-dimensional structural diagram of the external finishing mechanism of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the rear frame of the present invention;

[0031] Figure 5 This is a top view of the rear frame of the present invention;

[0032] Figure 6 This is a partial top sectional view of the structure of the built-in finishing mechanism and the profile frame of the present invention.

[0033] Figure 7 This is a three-dimensional schematic diagram of the built-in finishing mechanism of the present invention.

[0034] In the diagram: 1. Processing frame; 2. Shelf; 201. Auxiliary gear; 202. Transverse gear frame; 203. Longitudinal slide frame; 204. Directional turntable; 205. Single-axis drive motor; 206. Eccentric abutment shaft; 3. Rear frame; 301. Clamping frame; 4. External finishing mechanism; 40. Rotating rod; 41. Moving frame; 42. Telescopic cylinder; 43. Dual-axis drive motor; 44. Lead screw; 441. Moving... 45. Grinding long plate; 46. Moving plate; 47. Wedge-shaped abutment block one; 48. Pressure plate; 49. Guide lifting rod; 410. Wedge-shaped abutment block two; 411. Side grinding plate; 5. Built-in fine repair mechanism; 51. Single-axis drive motor two; 52. Rotating plate; 53. Slide frame one; 54. Slide frame two; 55. Double-track limiting slide frame; 56. Concave vertical frame; 57. Repair abutment cylinder; 58. Lifting frame; 59. Lifting cylinder. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figure 1 , Figure 2 and Figure 5 As shown, the stamping and trimming process for steel profiles used in solar photovoltaic panel frames specifically includes the following steps:

[0037] S1: Profile pre-positioning, the profile frame that has been preliminarily stamped is placed stably in a dedicated positioning station, and the profile frame is fixed in all directions by a full-area fitting negative pressure adsorption method.

[0038] S2: Refined composite trimming of the outer frame edge. The outer edge of the profile frame that has been precisely positioned is trimmed by using a stamping trimming device to remove burrs, flash and stamping residue from the outer edge in a step-by-step and orderly manner, while simultaneously performing a smoothing trimming on the outer edge.

[0039] S3: Dynamic impact repair of inner frame edge. For the concave and convex defects, local minor deformation and sharp burrs on the inner edge of the profile frame, a dynamic cyclic impact repair method is adopted. Combined with a high-precision limit guide structure to constrain the processing trajectory, the inner edge is smoothly transitioned and the outer dimensions are accurately corrected.

[0040] S4: Unloading and Storage: Unload qualified steel profile frames that have been trimmed and finished on both the inside and outside in a smooth and bump-free manner.

[0041] The stamping and trimming device used in the above processing method includes a processing frame 1, a placement plate 2, and a rear frame 3. The placement plate 2 is hinged to the inner wall of the processing frame 1 through a hinge shaft that runs through it. The surface of the placement plate 2 is evenly distributed with multiple sets of negative pressure adsorption holes in a rectangular array. Each adsorption hole is connected to an external vacuum pump through a negative pressure pipeline preset inside the placement plate 2. The rear frame 3 is installed at the bottom of the opening side of the processing frame 1. An external finishing mechanism 4 is provided inside the processing frame 1 and on one side above the placement plate 2. An internal finishing mechanism 5 is provided on one side of the external finishing mechanism 4.

[0042] Auxiliary gears 201 are fixedly sleeved on the rear end of the hinge shaft of the shelf 2 and the rear end of the drive rod 40 of the external finishing mechanism 4. A transverse tooth frame 202 is slidably sleeved on the outside of each auxiliary gear 201. The upper and lower inner walls of the transverse tooth frame 202 are staggered with tooth groups. The two sets of transverse tooth frames 202 are arranged in parallel with staggered upper and lower sides. The two are connected together by a longitudinal slide frame 203. A directional turntable 204 is movably installed at the front end of the longitudinal slide frame 203. A single-axis drive motor 205 is provided between the directional turntable 204 and the rear end of the processing frame 1. An eccentric abutment shaft 206 is provided at the rear end of the directional turntable 204 and in the area corresponding to the longitudinal slide frame 203. The longitudinal slide frame 203 is movably sleeved on the outside of the eccentric abutment shaft 206.

[0043] The rear frame 3 has symmetrical sliding connections on both sides of its interior. The front and rear ends of the two sets of clamping frames 301 are connected to the corresponding inner wall of the rear frame 3 with spring damping shock absorbers.

[0044] In specific operation, the single-axis drive motor 205 is started first, which drives the directional turntable 204 to rotate. Its eccentric abutment shaft 206 rotates synchronously with the directional turntable 204 and drives the longitudinal slide frame 203 to reciprocate in the horizontal direction. The longitudinal slide frame 203 drives the upper and lower sets of transverse tooth frames 202 to slide synchronously in opposite directions through the linkage structure, thereby driving the two sets of auxiliary rotating gears 201 and driving the hinge rotating shaft of the placement plate 2 and the rotating rod 40 of the external finishing mechanism 4 to rotate, so that the placement plate 2 is flipped to the processing state at a preset angle. At the same time, the external finishing mechanism 4 is adjusted to the processing position corresponding to the outer frame edge of the profile with the rotating rod 40.

[0045] The profile frame is then transferred to the placement plate 2 via an external conveying device. After the position is adjusted, an external vacuum pump can be used to create a negative pressure environment. The profile frame is then fully fitted and fixed through the adsorption holes on the surface of the placement plate 2, ensuring that there is no displacement or deviation during processing.

[0046] Then, the external finishing mechanism 4 is activated, and it moves step by step along the preset trajectory of the outer edge of the profile frame and performs processing. At the same time, the internal finishing mechanism 5 performs dynamic cyclic impact on the inner groove of the profile frame.

[0047] After all trimming processes are completed, the external vacuum pump stops working and releases the negative pressure adsorption. The external fine trimming mechanism 4 is flipped away from the profile by the rotating rod 40, and the shelf 2 is flipped to an inclined state by the hinge shaft. The qualified profile frame slides down the surface of the shelf 2 to the rear frame 3, and is temporarily dynamically limited by the clamping frame 301, waiting for subsequent unified transfer and storage.

[0048] Example 2: Please refer to Figure 2 , Figure 5 - Figure 7 As shown, the external finishing mechanism 4 includes a rotating rod 40 hinged inside the processing frame 1 away from the opening end, and the front and rear ends of the rotating rod 40 are respectively fixedly sleeved with linkage rods. The bottom of the two sets of linkage rods are slidably mounted on a moving frame 41, and a telescopic cylinder 42 is provided between the top side of the moving frame 41 and the rotating rod 40. A dual-axis drive motor 43 is provided at the center of one side of the inner cavity of the moving frame 41, and the output shafts of the dual-axis drive motor 43 are fixedly mounted with lead screws 44 with opposite spiral patterns. The ends of the two sets of lead screws 44 are respectively threaded with moving blocks 441, and the bottoms of the front and rear sets of moving blocks 441 are respectively fixedly mounted with grinding plates 45. A moving plate 46 is slidably mounted inside the moving frame 41 away from the end of the dual-axis drive motor 43, and the center of one side of the moving plate 46 is respectively hinged with inclined linkage rods between the two sets of lead screws 44. Two sets of wedge-shaped blocks 47 are fixedly mounted at the middle of the bottom of the moving plate 46.

[0049] A pressure plate 48 is movably installed at the bottom of the movable frame 41 and at the offset position from the movable plate 46. Guide rods 49 are longitudinally installed at the front and rear ends of the top of the pressure plate 48, and the top of the guide rods 49 extends through to the upper end of the movable frame 41 and is fitted with a pressure buffer spring ring. The pressure plate 48 extends forward and backward and exceeds the outer frame edge of the movable frame 41. A wedge-shaped block 410 adapted to the structure of the wedge-shaped block 47 is provided at the center of the top surface of the pressure plate 48. The front and rear ends of the pressure plate 48 are slidably fitted with longitudinally arranged side grinding plates 411. A sliding shaft is provided in the overlapping area of ​​the side grinding plates 411 and the pressure plate 48. The sliding shaft is slidably engaged with the long groove provided at the end of the pressure plate 48. A spring damping shock absorber ring is provided between the sliding shaft and the inner wall of the long groove.

[0050] In the outer edge processing stage of the profile frame: First, after the moving frame 41 is rotated vertically by 90 degrees, it stops on the surface of the steel profile frame that is being adsorbed. At this time, the two sets of grinding plates 45 are at the same height as the surface of the steel profile frame, and the pressure plate 48 is located above the profile frame. Then, the dual-axis drive motor 43 is started, which drives the two sets of screws 44 with opposite spiral patterns to rotate synchronously, so that the threaded moving block 441 moves towards each other along the axial direction of the screw 44, thereby driving the grinding plate 45 at the bottom to move laterally along the outer edge surface of the profile frame for grinding.

[0051] At the same time, the lead screw 44 pushes the moving plate 46 to slide away from the dual-axis drive motor 43 through the inclined linkage hinge. The wedge-shaped block 47 at the moving plate 46 and the wedge-shaped block 410 at the pressure plate 48 squeeze each other, forcing the pressure plate 48 to overcome the elastic force of the pressure buffer spring ring and move downward along the guide lifting rod 49 until its bottom surface is tightly attached to the surface of the profile frame, so as to realize the stamping of the profile surface, so as to impact and flatten the raised area of ​​the profile frame surface. With the continuous push of the telescopic cylinder 42, the continuous movement of first stamping the profile frame surface and then grinding is realized.

[0052] In addition, when the pressure plate 48 is pressed down and impacted, the two sets of side grinding plates 411 move synchronously towards the side of the profile frame under the sliding cooperation of the sliding shaft and the long groove. The spring damping shock absorber ring provides continuous elastic pressure, so that the grinding surface of the side grinding plate 411 is closely attached to the side of the profile. While the grinding plate 45 moves laterally to grind the outer frame edge surface, the vertical side of the profile frame is simultaneously trimmed, effectively eliminating burrs and uneven areas on the side.

[0053] In summary, the external finishing mechanism 4 integrates stamping and leveling with multi-directional grinding functions into the same actuator, achieving simultaneous fine processing of the steel profile frame surface and vertical sides. Its dual-axis drive motor 43 and lead screw 44 transmission structure, combined with the inclined transmission characteristics of the wedge-shaped abutment group, dynamically match the stamping pressure of the pressure plate 48 with the feed amount of the grinding plate 45, ensuring that the initial cleaning of surface burrs is completed simultaneously during the stamping and leveling process. The side grinding plate 411, through the elastic damping cooperation of the sliding shaft and the long groove, can adapt to the thickness deviation of the profile side, and always maintain a tight fit with the side when the pressure plate 48 is pressed down, solving the problem of uneven edge transition caused by asynchronous surface and side processing in traditional edge trimming processes.

[0054] In addition, the flip design of the movable frame 41 allows the mechanism to flexibly switch working positions, greatly improving the versatility and processing efficiency of the equipment.

[0055] Example 3: Please refer to Figure 2 , Figure 6 - Figure 7 As shown, the built-in precision repair mechanism 5 includes a single-axis drive motor 51 located at the center of one side of the moving frame 41, and a rotating plate 52 is fixedly installed at the output end of the single-axis drive motor 51. Sliding frames 53 and 54 are respectively hinged on both sides of the rotating plate 52, and the sliding frames 53 and 54 are arranged symmetrically with a front-to-back offset. The two ends of the rotating plate 52 are respectively hinged to the top frame of the opposite side of the sliding frame 53 and the bottom frame of the opposite side of the sliding frame 54 through hinge rods. The top center of the sliding frames 53 and 54 are jointly embedded in a double-rail limiting sliding frame 55, and the end of the double-rail limiting sliding frame 55 is fixedly connected to the moving frame 41.

[0056] Concave vertical frames 56 are fixedly installed at the center of the back of sliding frame 1 53 and sliding frame 2 54 respectively, and repair abutment cylinders 57 are passed through the open ends of the concave vertical frames 56. The upper and lower shafts of the repair abutment cylinders 57 are respectively passed through the upper and lower frames of the concave vertical frames 56. The top shafts of the two sets of repair abutment cylinders 57 are movably sleeved with inclined lifting frames 58, and the front and rear ends of the lifting frames 58 are provided with matching sliding grooves. The shafts and the sliding grooves form a sliding connection. A lifting cylinder 59 is provided between the bottom of the lifting frame 58 and the top surface of the double-rail limiting sliding frame 55.

[0057] In the inner edge processing stage of the profile frame: First, start the single-axis drive motor 51 to drive the rotating plate 52 to rotate around the output shaft. The rotating plate 52 drives the sliding frame 1 53 and the sliding frame 2 54 to reciprocate and slide in the front and back direction along the double-rail limiting sliding frame 55 through the hinge rods at both ends. Since the sliding directions of the two sets of sliding frames are opposite, the two sets of concave vertical frames 56 drive the repair abutment cylinder 57 to form an alternating dynamic impact trajectory, which can accurately correspond to different inner wall surfaces of the profile frame and form surface contact with the concave and convex defect areas of the inner groove wall. As the telescopic cylinder 42 continues to push, the two sets of repair abutment cylinders 57 fit against the inner groove wall of the profile and move along it in a straight line. In this way, not only can the capillary grinding of the inner groove side wall be achieved, but the area passed through can also be rolled flat.

[0058] Meanwhile, the height of the lifting frame 58 is adjusted by the extension and retraction of the lifting cylinder 59. The lifting frame 58, through the sliding engagement of its bottom groove and the top shaft of the repair abutment 57, moves the repair abutment 57 up and down along the opening of the concave vertical frame 56, thereby achieving impact pressure from the repair abutment 57 on the upper and lower walls of the inner groove, thus achieving a smooth transition of the inner edge of the profile frame (e.g., ...). Figure 7 (as shown)

[0059] In summary, the built-in precision repair mechanism 5 achieves the reciprocating misalignment movement of the double sliding frames through single-axis drive, and together with the lifting cylinder 59, it constructs a dynamic and cyclical inner frame edge repair system; the alternating operation mode of the double-set repair cylinders 57 greatly improves the efficiency and accuracy of inner frame edge processing, ensuring that the dimensional tolerance of the inner edge of the profile after trimming is controlled within a reasonable range, and meeting the high-precision assembly requirements of photovoltaic panel frames.

[0060] Working principle: When using this invention, the single-axis drive motor 205 is first started, and the longitudinal slide frame 203 is driven to make horizontal reciprocating motion through the eccentric abutment shaft 206 of the directional turntable 204. This drives the upper and lower sets of transverse toothed frames 202 to slide in opposite directions synchronously, causing the auxiliary rotating gear 201 to drive the hinge shaft of the placement plate 2 and the rotating rod 40 of the external finishing mechanism 4 to rotate respectively, so that the placement plate 2 is flipped to the preset processing angle. At the same time, the external finishing mechanism 4 is adjusted to the processing position corresponding to the outer frame edge of the profile.

[0061] Subsequently, the external conveying device transfers the pre-formed profile frame to the surface of the placement plate 2. The external vacuum pump forms a full-area fitting negative pressure environment through the negative pressure adsorption holes of the placement plate 2, achieving displacement-free fixation of the profile frame.

[0062] Next, the external finishing mechanism 4 is activated. The dual-axis drive motor 43 drives the reverse lead screw 44 to make the moving blocks 441 move towards each other, driving the grinding plate 45 to move laterally to grind the outer frame edge surface. At the same time, the lead screw 44 pushes the moving plate 46 through the inclined linkage hinge. The wedge-shaped block 1 47 and the wedge-shaped block 2 410 squeeze and force the pressure plate 48 to move down to press the profile surface. The side grinding plate 411, under the cooperation of the sliding shaft and the long groove, synchronously fits the side to trim the edge.

[0063] During this process, the single-axis drive motor 51 of the built-in fine repair mechanism 5 drives the rotating plate 52 to rotate. Through the hinge rod, the sliding frame 53 and the sliding frame 54 are driven to reciprocate and slide along the double-rail limit sliding frame 55, so that the repair cylinder 57 alternately impacts the inner frame edge. In conjunction with the lifting cylinder 59, the height of the lifting frame 58 is adjusted to achieve dynamic impact repair of the upper and lower walls of the inner groove.

[0064] After all trimming processes are completed, the external vacuum pump stops working and releases the adsorption. The external fine trimming mechanism 4 flips away from the profile, and the placement plate 2 tilts to allow the qualified frame to slide into the rear frame 3. The clamping frame 301 dynamically limits the movement through spring damping shock absorbers, awaiting subsequent transfer and storage. The entire process integrates positioning, external trimming, internal trimming, and unloading processes through the coordinated linkage of multiple mechanisms, achieving efficient and high-precision trimming of the steel profile frame.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A stamping and trimming process for steel profiles used in the frame of solar photovoltaic panels, characterized in that: Specifically, the following steps are included: S1: Profile pre-positioning, the profile frame that has been preliminarily stamped is placed stably in a dedicated positioning station, and the profile frame is fixed in all directions by a full-area fitting negative pressure adsorption method. S2: Refined composite trimming of the outer frame edge. The outer edge of the profile frame that has been precisely positioned is trimmed by using a stamping trimming device to remove burrs, flash and stamping residue from the outer edge in a step-by-step and orderly manner, while simultaneously performing a smoothing trimming on the outer edge. S3: Dynamic impact repair of inner frame edge. For the concave and convex defects, local minor deformation and sharp burrs on the inner edge of the profile frame, a dynamic cyclic impact repair method is adopted. Combined with a high-precision limit guide structure to constrain the processing trajectory, the inner edge is smoothly transitioned and the outer dimensions are accurately corrected. S4: Unloading and Storage: Unload qualified steel profile frames that have been trimmed and finished on both the inside and outside in a smooth and bump-free manner. The stamping and trimming device used in the above processing method includes a processing frame (1), a placement plate (2) and a rear frame (3). The placement plate (2) is hinged to the inner wall of the processing frame (1) through a hinge shaft that runs through it. The surface of the placement plate (2) is evenly arranged with multiple sets of negative pressure adsorption holes in a rectangular array. Each adsorption hole is connected to an external vacuum pump through a negative pressure pipeline preset inside the placement plate (2). The rear frame (3) is installed at the bottom of the opening side of the processing frame (1). An external finishing mechanism (4) is provided inside the processing frame (1) and on one side above the placement plate (2). An internal finishing mechanism (5) is provided on one side of the external finishing mechanism (4).

2. The steel profile stamping and trimming device for solar photovoltaic panel frames according to claim 1, characterized in that, Auxiliary gears (201) are fixedly sleeved on the rear end of the hinge shaft of the placement plate (2) and the rear end of the drive rod (40) of the external finishing mechanism (4). A transverse tooth frame (202) is sleeved and slidably on the outside of each auxiliary gear (201). The upper and lower inner walls of the transverse tooth frame (202) are staggered with tooth groups. The two sets of transverse tooth frames (202) are arranged in parallel with staggered upper and lower positions. The two are connected together by a longitudinal slide frame (203). A directional turntable (204) is movably installed at the front end of the longitudinal slide frame (203). A single-axis drive motor (205) is provided between the directional turntable (204) and the rear end of the processing frame (1). An eccentric abutment shaft (206) is provided at the rear end of the directional turntable (204) and in the area corresponding to the longitudinal slide frame (203). The longitudinal slide frame (203) is movably sleeved on the outside of the eccentric abutment shaft (206).

3. The steel profile stamping and trimming process and apparatus for solar photovoltaic panel frames according to claim 1, characterized in that, The external finishing mechanism (4) includes a rotating rod (40) hinged inside the processing frame (1) away from the opening end, and the front and rear ends of the rotating rod (40) are respectively fixedly sleeved with linkage rods. The bottom of the two sets of linkage rods are slidably installed with a moving frame (41), and a telescopic cylinder (42) is provided between the top side of the moving frame (41) and the rotating rod (40). A dual-axis drive motor (43) is provided at the center of one side of the inner cavity of the moving frame (41), and the output shaft of the dual-axis drive motor (43) is fixedly installed with screws (44) with opposite spiral patterns. The ends of the two sets of screws (44) are respectively threaded with moving blocks (441), and the bottom of the front and rear sets of moving frames (441) are respectively fixedly installed with grinding plates (45). Inside the movable frame (41), a sliding plate (46) is slidably installed at the end away from the dual-axis drive motor (43). The center position of one side of the sliding plate (46) is respectively hinged to two sets of lead screws (44) with inclined linkage hinge rods. Two sets of wedge-shaped blocks (47) are fixedly installed at the middle section of the bottom of the sliding plate (46).

4. The steel profile stamping and trimming device for solar photovoltaic panel frames according to claim 3, characterized in that, A pressure plate (48) is movably installed at the bottom of the movable frame (41) and at the offset position from the movable plate (46). A guide rod (49) is longitudinally installed at the front and rear ends of the top of the pressure plate (48). The top of the guide rod (49) extends through to the upper end of the movable frame (41) and is fitted with a pressure buffer spring ring. The pressure plate (48) extends forward and backward and exceeds the outer frame edge of the movable frame (41). A wedge-shaped block two (410) is provided at the center of the top surface of the pressure plate (48) and is adapted to the structure of the wedge-shaped block one (47).

5. The steel profile stamping and trimming device for a solar photovoltaic panel frame according to claim 4, characterized in that, The front and rear ends of the pressure plate (48) are respectively slidably sleeved with longitudinally arranged side grinding plates (411), and a sliding shaft is provided in the overlapping area of ​​the side grinding plate (411) and the pressure plate (48). The sliding shaft and the long groove provided at the end of the pressure plate (48) are slidably fitted, and a spring damping shock absorber is provided between the sliding shaft and the inner wall of the long groove.

6. The steel profile stamping and trimming device for solar photovoltaic panel frames according to claim 1, characterized in that, The built-in precision repair mechanism (5) includes a single-axis drive motor (51) located at the center of one side of the moving frame (41), and a rotating plate (52) is fixedly installed at the output end of the single-axis drive motor (51). A sliding frame (53) and a sliding frame (54) are respectively hinged on both sides of the rotating plate (52), and the sliding frame (53) and the sliding frame (54) are arranged symmetrically with a front-to-back offset. The two ends of the rotating plate (52) are respectively hinged to the top frame of the opposite side of the sliding frame (53) and the bottom frame of the opposite side of the sliding frame (54) through hinge rods. A double-track limiting sliding frame (55) is embedded in the center of the top of the sliding frame (53) and the sliding frame (54), and the end of the double-track limiting sliding frame (55) is fixedly connected to the moving frame (41).

7. The steel profile stamping and trimming device for solar photovoltaic panel frames according to claim 6, characterized in that, Concave upright frames (56) are fixedly installed at the center of the back side of the sliding frame one (53) and the sliding frame two (54), and a repair abutment cylinder (57) is passed through the opening end inside the concave upright frame (56). The upper and lower shafts of the repair abutment cylinder (57) are respectively passed through the upper and lower frames of the concave upright frame (56). The top shafts of the two sets of repair abutment cylinders (57) are movably sleeved with inclined lifting frames (58), and the front and rear ends of the lifting frames (58) are provided with matching sliding grooves. The shafts and the sliding grooves form a sliding connection. A lifting cylinder (59) is provided between the bottom of the lifting frame (58) and the top surface of the double-rail limiting sliding frame (55).

8. The steel profile stamping and trimming process and apparatus for solar photovoltaic panel frames according to claim 1, characterized in that, The rear frame (3) has symmetrical sliding connections on both sides of the interior, with a top beveled frame (301). The front and rear ends of the two sets of clamps (301) are connected to the inner wall of the corresponding rear frame (3) with spring damping shock absorbers.

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