Wave punching aluminum plate cold rolling die and forming method thereof

Abstract

The invention relates to the technical field of metal plate machining, in particular to a wave punching aluminum plate cold rolling die and a forming method thereof. According to the technical scheme, the wave punching aluminum plate cold rolling die comprises a lower die body, press-fit foam plates, an upper die body and limiting teeth, the press-fit foam plates are arranged on the two sides of the lower die body, the limiting teeth are arranged on the top face of the middle section of the lower die body, the upper die body is arranged above the lower die body, and the press-fit foam plates are arranged on the middle section of the lower surface of the upper die body; the press-fit foam plates are arranged on the middle section of the lower surface of the upper die and the two sides of the lower die, the middle of an aluminum plate can be pushed to extend to form a uniform arc in the cold rolling process, resilience stress is absorbed, meanwhile, end pressure is buffered, smooth transition between the arc and a straight line is guaranteed, and production efficiency is improved. And the arc uniformity is effectively improved, and flaws possibly occurring in existing cold rolling are eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of metal plate processing, and in particular to a wave punching aluminum plate cold rolling die and a forming method thereof. Background Art

[0002] At present, wave perforated aluminum plates are widely used in the fields of architectural decoration, transportation, etc. due to their good decorativeness and functionality. In the existing cold rolling die forming method of wave perforated aluminum plates, it is difficult to accurately control the arc shape of the density board material during the bending process, resulting in unnatural transition between the arc and the straight line at both ends of the wave plate, a sense of step or defects, and the arc is easily deformed due to rebound, and the overall quality fluctuates greatly. In response to the problems existing in the existing cold rolling die forming method of wave perforated aluminum plates, this solution sets a pressed foam plate in the middle section of the lower surface of the upper die and on both sides of the lower die, which can push the middle of the aluminum plate to extend to form a uniform arc during the cold rolling process, absorb rebound stress, and buffer the end pressure at the same time, ensure a smooth transition between the arc and the straight line, effectively improve the uniformity of the arc and eliminate the defects that may occur in the existing cold rolling. Summary of the Invention

[0003] In order to overcome the existing cold-rolling die forming method of corrugated perforated aluminum plate, it is difficult to accurately control the arc shape of the density board material during the bending process, resulting in unnatural transition between the arc and the straight line at both ends of the corrugated plate, a sense of step or defects, and the arc is easily deformed due to rebound, resulting in large fluctuations in overall quality.

[0004] The technical solution of the present invention is: a wave punching aluminum plate cold rolling die, comprising a lower die, a pressed foam plate, an upper die and a limiting tooth, both sides of the lower die are provided with a pressed foam plate, the middle top surface of the lower die is provided with a limiting tooth, an upper die is provided above the lower die, a pressed foam plate is provided in the middle section of the lower surface of the upper die, and the pressed foam plates on both sides of the lower die are of a size of width, the size of the pressed foam board in the middle section of the lower surface of the upper mold is Width.

[0005] Preferably, the lower mold is used as the forming reference surface to provide lower contour support, and cooperates with the upper mold to complete the wave shape forming. The upper mold and the lower mold are closed to apply pressure to the aluminum plate to complete the cold rolling forming. The aluminum plate's rebound force is absorbed by the pressed foam plate to stabilize the arc forming. The aluminum plate is fixed and limited by the limiting teeth when the upper mold and the lower mold are closed.

[0006] Preferably, the wave punching aluminum plate cold rolling die is used for a hydraulic press, which includes a 50T hydraulic press, a pad and a punching aluminum plate. The 50T hydraulic press is provided with a pad inside, and the pads are provided in multiple groups. A punching aluminum plate is provided between the lower die and the upper die.

[0007] A cold rolling die forming method for a wave punching aluminum plate comprises the following steps: S11: Install and prepare the mold, and check the pressure and speed parameters of the 50T hydraulic press; S12: Position and fix the mold, adjust the position of the upper and lower molds, and check whether the upper and lower molds are installed stably; S13: Insert the aluminum plate into the positioning pin of the lower mold to position and lubricate the aluminum plate; S14: Install 180mm limiters on the 50T hydraulic press and set and adjust the 50T hydraulic press; S15: Start the 50T hydraulic press to press down slowly, and the deformation of the pressed foam plate pushes the aluminum plate to form a continuous arc, and the forming operation is carried out in one step; S16: After the upper and lower molds are closed, pressure is maintained and arc shaping is performed; S17: Open the mold, take out the finished product, and perform a quality inspection on it.

[0008] Preferably, the following steps are included when installing and preparing the mold: S21: Prepare the upper mold, lower mold, 50T hydraulic press, punched aluminum plate, and two sets of different types of pressed foam boards; S22: Clean the surfaces of the upper and lower molds, and check whether the pressure and parameters of the 50T hydraulic press meet the requirements; S23: Check whether the pressure and parameters of the 50T hydraulic press meet the requirements and whether the limit switch is normal, and set the pressure range.

[0009] Preferably, the following steps are included when positioning and fixing the mold: S31: Manually adjust the position of the upper mold to align the positioning holes of the upper mold and the lower mold, and check whether the gap is uniform after mold closing; S32: Insert the positioning pin vertically into the middle round tube of the lower mold with a depth of ≥20mm to ensure that the middle hole is accurately inserted when the aluminum plate is placed; S33: Place hardwood boards in the non-critical areas of the upper and lower molds, with a thickness matching the mold gap, to prevent mold deformation during pressing. S34: Tighten the screws in alternating diagonal order, gradually tightening them in 2-3 times to avoid unilateral force causing the mold to tilt.

[0010] Preferably, the following steps are included when positioning and lubricating the aluminum plate: S41: Place the aluminum plate flat on the surface of the lower mold, insert the positioning pin into the middle hole, and snap the two ends into the positioning grooves on the edge of the lower mold to ensure that the aluminum plate does not deviate; S42: Use a soft cloth to evenly apply solid soap on the surface of the upper and lower mold tubes, focusing on the area in contact with the aluminum plate, with a thickness of about 0.1mm.

[0011] Preferably, when setting and adjusting the press, the following steps are included: S51: Install limit blocks at the four corners of the 50T hydraulic press, with the height set to 180mm to ensure that the workpiece is not over-compressed when the press is pressed down; S52: Adjust the pressure parameters according to the thickness of the aluminum plate. For 1.0mm aluminum plate, set it to 12MPa, for 1.5mm aluminum plate, set it to 14MPa, and set the holding time to 3-5 seconds.

[0012] Preferably, when performing a primary molding operation, the following steps are included: S61: Press the start button, the press will press down slowly, and observe that the pressure gauge value is stable within the set range; S62: The pressed foam sheet in the middle section of the lower surface of the upper mold is evenly compressed after being pressed, pushing the middle section of the aluminum sheet to extend outward to form a continuous arc; S63: The pressed foam plates on both sides of the lower mold buffer the end pressure to avoid stress concentration at the intersection of the arc and the straight line; S64: Check through the 50T hydraulic press observation window whether the aluminum plate is evenly extended and has no local wrinkles or breaks. If necessary, pause and adjust the tightness of the screw.

[0013] Preferably, the following steps are included during pressure holding and arc shaping: S71: After reaching the set pressure, maintain the pressure for 3-5 seconds; S72: During the holding period, the pressed foam plate continuously applies a reverse force to offset the rebound tendency of the aluminum plate after cooling, ensuring the stability of the arc radius.

[0014] Preferably, the following steps are included when taking out the finished product and inspecting its quality: S81: First, slowly release the pressure of the 50T hydraulic press. After the upper mold is completely separated from the aluminum plate, quickly raise the upper mold to avoid sudden pressure release that may cause deformation of the aluminum plate. S82: Use a suction cup to hold the center of the aluminum plate, and gently lift from the edge with a soft rubber spatula. Avoid direct contact with the curved area with your fingers to prevent fingerprints or scratches. S83: Use a roundness meter to measure the arc radius. The width of the intersection of the straight line and the arc should be ≥5mm, and there should be no step feeling. Ensure that there are no scratches, dents, peeling, and the glossiness is consistent. S84: Use a laser cutting machine to cut the scraps of qualified products according to the drawing requirements, and use 320# sandpaper to polish the burrs on the cuts; S85: After operation, wipe the surface with a neutral detergent to remove residual soap or fingerprints, let it dry and then package.

[0015] Beneficial effects of the present invention: 1. Compared with the existing cold-rolling die forming method for corrugated perforated aluminum sheets, it is difficult to accurately control the arc shape of density board materials during the bending process, resulting in an unnatural transition between the arc and the straight line at both ends of the corrugated sheet, a sense of step or defects, and the arc is easily deformed due to rebound, resulting in large fluctuations in overall quality. This solution, by installing a pressed foam plate in the middle section of the lower surface of the upper die and on both sides of the lower die, can push the middle of the aluminum sheet to extend to form a uniform arc during the cold rolling process, absorb rebound stress, and buffer the end pressure at the same time, ensuring a smooth transition between the arc and the straight line, effectively improving the arc uniformity and eliminating the defects that may occur in existing cold rolling. 2. Compared with the existing cold-rolled die forming method of corrugated punching aluminum plate, which adopts a single bending production process, involving multiple processes such as aluminum plate positioning, bending operation, and quality inspection, and requires multiple people to complete the work, resulting in a significant extension of the overall production cycle. This solution adopts a corrugated aluminum plate one-piece forming die, and uses a 50T hydraulic press to complete the aluminum plate forming in one go. There is no need for multiple people to collaborate, and all arcs and straight lines can be formed in a single press. The production efficiency is effectively improved, and the mechanized one-time forming avoids manual adjustment deviations, and the product consistency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a wave punching aluminum plate cold rolling die of the present invention; Figure 2 Shown is a schematic diagram of the cross-sectional structure of a cold-rolling die for a wave punching aluminum plate according to the present invention; Figure 3 Shown is a schematic diagram of the first partial structure of a wave punching aluminum plate cold rolling die of the present invention; Figure 4 Shown is a schematic diagram of the second partial structure of a wave punching aluminum plate cold rolling die of the present invention; Figure 5 Shown is a schematic diagram of the partial structure of a wave punching aluminum plate cold rolling die punching aluminum plate of the present invention; Figure 6 Shown is a schematic diagram of the workflow of a cold-rolling die forming method for a wave punching aluminum plate of the present invention; Explanation of the accompanying symbols: 1. 50T hydraulic press; 2. Pad; 3. Lower mold; 4. Pressed foam board; 5. Upper mold; 6. Punched aluminum plate; 7. Limiting teeth. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] See also Figure 1-5The present invention provides an embodiment: a wave punching aluminum plate cold rolling die, comprising a lower die 3, a pressed foam plate 4, an upper die 5 and a limiting tooth 7, both sides of the lower die 3 are provided with a pressed foam plate 4, the middle top surface of the lower die 3 is provided with a limiting tooth 7, the upper die 5 is provided above the lower die 3, the middle section of the lower surface of the upper die 5 is provided with a pressed foam plate 4, the pressed foam plates 4 on both sides of the lower die 3 are sized. width, the size of the pressed foam board 4 in the middle section of the lower surface of the upper mold 5 is Width.

[0019] The lower mold 3 is used as the forming reference surface to provide lower contour support, and cooperates with the upper mold 5 to complete the wave shape forming. The upper mold 5 and the lower mold 3 are closed to apply pressure to the aluminum plate to complete the cold rolling forming. The aluminum plate's rebound force is absorbed by the pressed foam board 4 to stabilize the arc forming. The aluminum plate is fixed and limited by the limiting teeth 7 when the upper mold 5 and the lower mold 3 are closed.

[0020] Preferably, the wave punching aluminum plate cold rolling die is used for a hydraulic press, which includes a 50T hydraulic press 1, a pad 2 and a punching aluminum plate 6. The interior of the 50T hydraulic press 1 is provided with a pad 2, and the pad 2 is provided in multiple groups. A punching aluminum plate 6 is provided between the lower mold 3 and the upper mold 5. When in use, the 50T hydraulic press 1 provides the pressure required for forming, drives the upper mold 5 and the lower mold 3 to close, completes the cold rolling forming of the punching aluminum plate 6, and fills the mold gap with the pad 2 to ensure that the punching aluminum plate 6 is evenly pressurized to prevent local deformation or defects.

[0021] See also Figure 6 In this embodiment, a cold-rolling die forming method for a wave punching aluminum plate includes the following steps: S11: Install and prepare the mold, and check the pressure and speed parameters of the 50T hydraulic press 1; S12: Position and fix the mold, adjust the position of the upper and lower molds, and check whether the upper and lower molds are installed stably; S13: Insert the aluminum plate into the positioning pin of the lower mold 3 to position and lubricate the aluminum plate; S14: Install 180mm limiter on 50T hydraulic press 1, and set and adjust 50T hydraulic press 1; S15: Start the 50T hydraulic press 1 and press down slowly, so that the pressed foam plate 4 deforms and pushes the aluminum plate to form a continuous arc, and a forming operation is performed; S16: After the upper and lower molds are closed, pressure is maintained and arc shaping is performed; S17: Open the mold, take out the finished product, and perform a quality inspection on it.

[0022] Preferably, the following steps are included when installing and preparing the mold: S21: Prepare the upper mold 5, the lower mold 3, the 50T hydraulic press 1, the punching aluminum plate 6, and two sets of different types of pressed foam boards 4; S22: Clean the surfaces of the upper mold 5 and the lower mold 3, and check whether the pressure and parameters of the 50T hydraulic press 1 meet the requirements; S23: Check whether the pressure and parameters of the 50T hydraulic press 1 meet the requirements and whether the limit switch is normal, and set the pressure range.

[0023] Preferably, the following steps are included when positioning and fixing the mold: S31: Manually adjust the position of the upper mold 5 so that the positioning holes of the upper mold 5 and the lower mold 3 are aligned, and check whether the gap is uniform after the mold is closed; S32: Insert the positioning pin vertically into the middle round tube of the lower mold 3, with a depth of ≥20mm, to ensure that the middle hole is accurately inserted when the aluminum plate is placed; S33: Place hardwood boards in the non-critical areas of the upper and lower molds, with a thickness matching the mold gap, to prevent mold deformation during pressing. S34: Tighten the screws in alternating diagonal order, gradually tightening them in 2-3 times to avoid unilateral force causing the mold to tilt.

[0024] Preferably, the following steps are included when positioning and lubricating the aluminum plate: S41: Place the aluminum plate flat on the surface of the lower mold 3, insert the positioning pin into the middle hole, and snap the two ends into the positioning grooves on the edge of the lower mold to ensure that the aluminum plate does not deviate; S42: Use a soft cloth to evenly apply solid soap on the surface of the upper and lower mold tubes, focusing on the area in contact with the aluminum plate, with a thickness of about 0.1mm.

[0025] Preferably, when setting and adjusting the press, the following steps are included: S51: Install limit blocks at the four corners of the 50T hydraulic press 1, with the height set to 180mm to ensure that the workpiece is not over-compressed when the press is pressed down; S52: Adjust the pressure parameters according to the thickness of the aluminum plate. For 1.0mm aluminum plate, set it to 12MPa, and for 1.5mm aluminum plate, set it to 14MPa. Set the holding time to 3-5 seconds.

[0026] Preferably, when performing a primary molding operation, the following steps are included: S61: Press the start button, the press will press down slowly, and observe that the pressure gauge value is stable within the set range; S62: The pressed foam plate 4 in the middle section of the lower surface of the upper mold 5 is evenly compressed after being pressed, pushing the middle section of the aluminum plate to extend outward to form a continuous arc; S63: The pressed foam plates 4 on both sides of the lower mold 3 buffer the end pressure to avoid stress concentration at the intersection of the arc and the straight line; S64: Check through the observation window of the 50T hydraulic press 1 whether the aluminum plate is evenly extended and has no local wrinkles or breaks. If necessary, pause and adjust the tightness of the screw.

[0027] Preferably, the following steps are included during pressure holding and arc shaping: S71: After reaching the set pressure, maintain the pressure for 3-5 seconds; S72: During the pressure holding period, the pressed foam plate 4 continuously applies a reverse force to offset the rebound tendency of the aluminum plate after cooling, thereby ensuring a stable arc radius.

[0028] Preferably, the following steps are included when taking out the finished product and inspecting its quality: S81: First, slowly release the pressure of the 50T hydraulic press 1. After the upper mold 5 is completely separated from the aluminum plate, quickly raise the upper mold to avoid sudden pressure release that may cause deformation of the aluminum plate. S82: Use a suction cup to hold the center of the aluminum plate, and gently lift from the edge with a soft rubber spatula. Avoid direct contact with the curved area with your fingers to prevent fingerprints or scratches. S83: Use a roundness meter to measure the arc radius. The width of the intersection of the straight line and the arc should be ≥5mm, and there should be no step feeling. Ensure that there are no scratches, dents, peeling, and the glossiness is consistent. S84: Use a laser cutting machine to cut the scraps of qualified products according to the drawing requirements, and use 320# sandpaper to grind the burrs on the cuts; S85: After operation, wipe the surface with a neutral detergent to remove residual soap or fingerprints, let it dry and then package.

[0029] Example 1: Implementation background: A certain aluminum product processing enterprise traditionally uses the "single bending arc + manual correction" process to produce corrugated punched aluminum plates, which has the following pain points: (1) Low production efficiency: Each batch of aluminum plates requires 4 workers to collaborate for 6 hours, and the annual production capacity is only 1200 ; (2) Large quality fluctuations: the deviation of the arc radius is up to ±1.2mm, the width of the transition zone between the straight line and the arc is less than 3mm, and the defect rate is 15%; (3) Serious material waste: the secondary processing caused by springback makes the aluminum plate utilization rate only 82%. In order to solve the above problems, the company introduced the "wave punching aluminum plate cold rolling die and its forming method" described in this plan, and achieved efficient and high-quality production through integrated die design, foam board pressure control and hydraulic press precise limit.

[0030] Implementation steps: S91: Prepare the components, including a 50T hydraulic press 1, a lower mold 3, a pressed foam plate 4, an upper mold 5, a punched aluminum plate 6, and a limit tooth 7; S92: Clean the upper and lower mold surfaces to ensure there is no aluminum chips remaining, and check the sensitivity of the pressure gauge and limit switch of the 50T hydraulic press. S93: Manually adjust the upper mold 5 so that the gap between the positioning hole and the guide column of the lower mold 3 is ≤0.05mm, and insert the positioning pin of the middle round tube of the lower mold 3; S94: Place birch hardboard in the non-critical areas of the upper and lower molds and tighten the M16 fixing screws three times using the diagonal method; S95: Insert the locating pin into the middle hole of the aluminum plate, and insert the two ends into the V-shaped locating groove of the lower mold. Use a laser alignment instrument to check that the overlap between the edge of the aluminum plate and the mold reference line is ≤0.1mm; S96: Use a suede cloth to evenly apply the solid soap on the surface of the mold tube; S97: Install polyurethane limit blocks at the four corners of the 50T hydraulic press 1, set the pressure to 13 MPa, the pressing speed to 0.15 m / s, and the holding time to 4 seconds; S98: Press the start button, and the 50T hydraulic press 1 slowly presses down until it contacts the aluminum plate. Observe that the pressure gauge value is stable within the range of 12.8-13.2MPa. S99: The pressed foam board 4 in the middle section of the lower surface of the upper mold 5 is evenly compressed after being pressed, pushing the middle of the aluminum plate to extend to form an arc with a radius of R50mm; S910: The foam plates 4 on both sides of the lower mold 3 are pressed together to buffer the end pressure to avoid stress concentration at the intersection of the arc and the straight line; S911: After reaching the set pressure, maintain the pressure for 4 seconds, and continuously apply a 0.3MPa reverse force to the pressing foam plate 4 to offset the cooling rebound of the aluminum plate; S912: The pressure of the 50T hydraulic press 1 is slowly released to 0 at a rate of 0.5MPa / s. After the upper mold 5 is completely separated from the aluminum plate, the upper mold 5 is quickly raised to the highest position. S913: Use a vacuum suction cup to suck the middle area of ​​the aluminum plate, and gently lift it from the edge with a silicone spatula to avoid scratching the surface; S914: Use a roundness meter to measure the arc radius, and a laser detector to scan the width of the transition area between the straight line and the arc.

[0031] Data comparison table:

[0032] Summarize: Through the implementation of this plan, the enterprise achieves: 1. Efficiency leap: single-shift (8 hours) output increased from 60 square meters to 300 square meters; 2.Quality compliance: The product has passed GB / T 23443-2009 standard certification for aluminum veneer for architectural decoration; 3. Cost optimization: production cost per square meter is reduced by 240 yuan.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A cold rolling die for corrugated punching aluminum plate; characterized by: The present invention comprises a lower mold (3), a pressed foam plate (4), an upper mold (5) and a limiting tooth (7), wherein the pressed foam plates (4) are provided on both sides of the lower mold (3), the limiting tooth (7) is provided on the top surface of the middle section of the lower mold (3), the upper mold (5) is provided above the lower mold (3), the pressed foam plates (4) are provided in the middle section of the lower surface of the upper mold (5), and the pressed foam plates (4) on both sides of the lower mold (3) are of a size of width, the size of the pressed foam board (4) in the middle section of the lower surface of the upper mold (5) is Width.

2. The cold rolling die for corrugated punching aluminum plate according to claim 1, characterized in that: The wave punching aluminum plate cold rolling die is used for a hydraulic press, which comprises a 50T hydraulic press (1), a backing plate (2) and a punching aluminum plate (6). The backing plate (2) is arranged inside the 50T hydraulic press (1), and the backing plate (2) is provided in multiple groups. The punching aluminum plate (6) is arranged between the lower die (3) and the upper die (5).

3. A cold rolling die forming method for wave punching aluminum plate, characterized by: The following steps are included: S11: Install and prepare the mold, and check the pressure and speed parameters of the 50T hydraulic press (1); S12: Position and fix the mold, adjust the position of the upper and lower molds, and check whether the upper and lower molds are installed stably; S13: insert the aluminum plate into the positioning pin of the lower mold (3), and position and lubricate the aluminum plate; S14: Install 180mm stopper on 50T hydraulic press (1), and set and adjust 50T hydraulic press (1); S15: Start the 50T hydraulic press (1) and slowly press down, so that the foam plate (4) is deformed and pushes the aluminum plate to form a continuous arc, and a forming operation is performed once; S16: After the upper and lower molds are closed, pressure is maintained and arc shaping is performed; S17: Open the mold, take out the finished product, and perform a quality inspection on it.

4. The cold rolling die forming method for wave punching aluminum plate according to claim 3, characterized in that: When installing and preparing the mold, the following steps are included: S21: Prepare the upper mold (5), the lower mold (3), the 50T hydraulic press (1), the punched aluminum plate (6), and two sets of different types of pressed foam plates (4); S22: Clean the surfaces of the upper mold (5) and the lower mold (3), and check whether the pressure and parameters of the 50T hydraulic press (1) meet the requirements; S23: Check whether the pressure and parameters of the 50T hydraulic press (1) meet the requirements and whether the limit switch is normal, and set the pressure range.

5. The cold rolling die forming method for wave punching aluminum plate according to claim 3, characterized in that: When positioning and fixing the mold, the following steps are included: S31: Manually adjust the position of the upper mold (5) so that the positioning holes of the upper mold (5) and the lower mold (3) are aligned, and check whether the gap is uniform after the mold is closed; S32: Insert the positioning pin vertically into the middle round tube of the lower mold (3) with a depth of ≥20mm to ensure that the middle hole is accurately inserted when the aluminum plate is placed; S33: Place hardwood boards in the non-critical areas of the upper and lower molds, with a thickness matching the mold gap, to prevent mold deformation during pressing. S34: Tighten the screws in alternating diagonal order, gradually tightening them in 2-3 times to avoid unilateral force causing the mold to tilt.

6. The cold rolling die forming method for wave punching aluminum plate according to claim 3, characterized in that: When positioning and lubricating the aluminum plate, the following steps are included: S41: Place the aluminum plate flat on the surface of the lower mold (3), insert the positioning pin into the middle hole, and snap the two ends into the positioning grooves on the edge of the lower mold to ensure that the aluminum plate does not deviate; S42: Use a soft cloth to evenly apply solid soap on the surface of the upper and lower mold tubes, focusing on the area in contact with the aluminum plate, with a thickness of about 0.1mm.

7. The cold rolling die forming method for wave punching aluminum plate according to claim 3, characterized in that: The following steps are involved in press setup and adjustment: S51: Install limit blocks at the four corners of the 50T hydraulic press (1), with the height set to 180mm, to ensure that the workpiece is not over-compressed when the press is pressed down; S52: Adjust the pressure parameters according to the thickness of the aluminum plate. For 1.0mm aluminum plate, set it to 12MPa, and for 1.5mm aluminum plate, set it to 14MPa. Set the holding time to 3-5 seconds.

8. The cold rolling die forming method for wave punching aluminum plate according to claim 3, characterized in that: When performing a molding operation, the following steps are included: S61: Press the start button, the press will press down slowly, and observe that the pressure gauge value is stable within the set range; S62: The pressed foam plate (4) in the middle section of the lower surface of the upper mold (5) is evenly compressed after being pressed, pushing the middle section of the aluminum plate to extend outward to form a continuous arc; S63: The pressed foam plates (4) on both sides of the lower mold (3) buffer the end pressure to avoid stress concentration at the intersection of the arc and the straight line; S64: Check through the observation window of the 50T hydraulic press (1) whether the aluminum plate is evenly extended and has no local wrinkles or breaks. If necessary, pause and adjust the tightness of the screw.

9. The cold rolling die forming method for wave punching aluminum plate according to claim 3, characterized in that: When performing pressure holding and arc shaping, the following steps are included: S71: After reaching the set pressure, maintain the pressure for 3-5 seconds; S72: During the pressure holding period, the pressed foam plate (4) continuously applies a reverse force to counteract the rebound tendency of the aluminum plate after cooling, thereby ensuring that the arc radius is stable.

10. The cold rolling die forming method for wave punching aluminum plate according to claim 3, characterized in that: When taking out the finished product and checking the quality, the following steps are included: S81: First, slowly release the pressure of the 50T hydraulic press (1), and after the upper mold (5) is completely separated from the aluminum plate, quickly raise the upper mold to avoid sudden pressure release that may cause deformation of the aluminum plate; S82: Use a suction cup to hold the center of the aluminum plate, and gently lift from the edge with a soft rubber spatula. Avoid direct contact with the curved area with your fingers to prevent fingerprints or scratches. S83: Use a roundness meter to measure the arc radius. The width of the intersection of the straight line and the arc should be ≥5mm, and there should be no step feeling. Ensure that there are no scratches, dents, peeling, and the glossiness is consistent. S84: Use a laser cutting machine to cut the scraps of qualified products according to the drawing requirements, and use 320# sandpaper to grind the burrs on the cuts; S85: After operation, wipe the surface with a neutral detergent to remove residual soap or fingerprints, let it dry and then package.

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