A punching and trimming device for plate forming

Abstract

This invention discloses a stamping and trimming device for sheet metal forming, relating to the technical field of stamping and trimming devices. The stamping and trimming device is used to trim the waste edges of workpieces. The device includes a trimming mechanism with several sets of clamping mechanisms arranged circumferentially. A pressing mechanism is provided on the trimming mechanism. The trimming mechanism includes a lower die base with a lower cutter. The clamping mechanism includes a sliding shaft and a rotating shaft. A pressing strip is provided at the upper end of the rotating shaft, and the pressing strip and sliding shaft are slidably connected. The inner side of the pressing strip is inclined. The pressing mechanism includes a telescopic component with a pressing block below it. The pressing strip and the pressing block abut against the edge of the workpiece. This invention utilizes the synergistic effect of the pressing strip, sliding shaft, and rotating shaft to achieve automatic positioning and clamping of the workpiece edge, improving production efficiency and trimming accuracy. The pressing mechanism effectively prevents workpiece movement or deformation during trimming, ensuring the quality and accuracy of the trimming.

Description

Technical Field

[0001] This invention relates to the field of edge trimming and stamping devices, specifically a stamping and edge trimming device for sheet metal forming. Background Technology

[0002] In stamping systems, trimming dies are typically used in conjunction with stretching and forming processes. Their core function is to eliminate excess edge material generated in the preceding process. The die employs a sharp cutting edge structure, and by properly controlling the blanking clearance, a straight cross-section can be obtained, effectively extending the die's lifespan.

[0003] During the stamping and trimming process, due to the varying shapes and sizes of the sheet metal, it is often difficult to guarantee the precision and quality of the trimming, especially when processing irregularly shaped sheet metal. Traditional stamping and trimming equipment is often unable to meet production demands. Furthermore, traditional stamping and trimming equipment typically uses a fixed clamping method when holding the sheet metal. This method is poorly adaptable to sheet metal of different shapes and sizes, and can easily lead to the sheet metal moving or deforming during the trimming process, thus affecting the precision and quality of the trimming. Summary of the Invention

[0004] The technical problem to be solved by the present invention is the inability to adaptively clamp plates of different shapes and sizes, and provides a stamping and trimming device for plate forming.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A stamping and trimming device for sheet metal forming is used to punch off the waste edges of a workpiece. The stamping and trimming device includes a trimming mechanism, which is circumferentially arranged with several sets of clamping mechanisms and is equipped with a pressing mechanism.

[0007] The trimming mechanism includes a lower die base, on which a lower cutter is provided;

[0008] The clamping mechanism includes a pressure bar, a sliding shaft, and a rotating shaft. The upper end of the rotating shaft is provided with a pressure bar, and the pressure bar and the sliding shaft are slidably connected. The inner side of the pressure bar is inclined.

[0009] The edge-pressing mechanism includes a telescopic component, and an edge-pressing block is provided below the telescopic component;

[0010] The sliding shaft and the lower die base are slidably connected, the lower die base and the rotating shaft are rotatably connected, the workpiece is placed inside the lower cutter, the lower part of the pressure strip abuts against the edge of the workpiece, and the lower part of the pressure block abuts against the edge of the workpiece.

[0011] After the workpiece is stamped, excess edges and burrs will be generated. A trimming mechanism is needed to remove the waste edges of the workpiece. The overall shape of the lower cutter matches the workpiece, providing a fixed trimming platform for the workpiece, so that the workpiece can be accurately placed in the lower cutter. Since the rotating shaft is connected to the pressure bar, and the pressure bar is slidably connected to the sliding shaft, which is in turn slidably connected to the lower die base, the rotation of the rotating shaft will drive the pressure bar to move along the sliding shaft until the inclined side of the pressure bar abuts against the edge of the workpiece that needs to be trimmed. Since the edge size and position of different batches of workpieces are different, the sliding shaft will contact the edge of the workpiece first when it slides during the rotation of the pressure bar. After the sliding shaft stops, the pressure bar will also stop rotating and press against the edge of the workpiece, thereby adaptively clamping the edge of the workpiece. In addition, the telescopic component drives the pressure block to move downward, so that the pressure block abuts against the edge of the workpiece, further preventing the workpiece from moving or deforming during the trimming process.

[0012] Furthermore, an upper sliding groove is provided below the pressure strip;

[0013] The lower mold base is provided with a lower sliding groove;

[0014] The two ends of the sliding shaft are slidably connected to the upper sliding groove and the lower sliding groove, respectively.

[0015] The upper and lower sliding grooves provide a precise sliding track for the sliding shaft, allowing the pressure bar to move smoothly and accurately to the edge of the workpiece that needs to be cut under the drive of the rotating shaft. This not only improves the stability of clamping but also ensures the accuracy of clamping. Even when faced with workpieces of different shapes and sizes, it can achieve adaptive clamping, thereby greatly improving the versatility and practicality of the device. Furthermore, the tight fit between the sliding shaft and the upper and lower sliding grooves effectively reduces vibration and deviation during the cutting process, further ensuring the quality and efficiency of the cutting.

[0016] Furthermore, the clamping mechanism also includes a belt and a rotary motor. The output end of the rotary motor is provided with a pulley, which abuts against the belt, and the belt abuts against one end of the rotating shaft.

[0017] The lower mold base has an opening inside;

[0018] The belt passes through the opening.

[0019] The rotary motor acts as a power source, transmitting rotational power to the belt through its output end contacting the belt. The belt then drives the rotating shaft to rotate. Since the rotating shaft is connected to the pressure bar, the rotation of the rotating shaft will cause the pressure bar to rotate accordingly. The opening inside the lower mold base provides a channel for the belt to pass through, ensuring that the belt can smoothly connect the rotary motor and the rotating shaft, thereby realizing the power transmission and motion coordination of the entire clamping mechanism.

[0020] Furthermore, the trimming mechanism also includes an upper mold base, a connecting assembly, an upper cutter, and a lower cutter. The connecting assembly is located below the upper mold base and is connected to the upper cutter.

[0021] The upper cutter has a cavity inside;

[0022] The lower cutter has a placement cavity;

[0023] The inner diameter of the cavity is larger than the inner diameter of the placement cavity.

[0024] The upper die base is connected to the upper cutter via a connecting assembly, ensuring the stability and precision of the upper cutter during the cutting process. The cutting edge of the upper cutter matches the edge of the workpiece, and the overall shape of the lower cutter's placement cavity matches the workpiece, providing a fixed cutting platform for the workpiece. This allows the workpiece to be accurately placed within the lower cutter's placement cavity. Since the connecting assembly and the upper cutter are connected by a snap-fit, the corresponding upper and lower cutters switch simultaneously when the workpiece is changed. When the workpiece is accurately placed within the lower cutter, the pressure bar presses against the waste edge of the workpiece through adaptive adjustment. Then, the upper die base moves downward under the drive of the drive cylinder 7, and the upper cutter moves downward accordingly, cooperating with the lower cutter to accurately remove the waste edge of the workpiece. The design of the cavity inner diameter being larger than the placement cavity inner diameter provides space for the waste generated during the cutting process, preventing waste from getting stuck between the upper and lower cutters and affecting the cutting effect. This design not only ensures the quality of the cutting but also makes the edges of the workpiece smoother and flatter.

[0025] Furthermore, the stamping and trimming device also includes a frame, a drive cylinder, and a housing, with the drive cylinder housed inside the housing;

[0026] The frame includes a base and a top plate;

[0027] The output end of the drive cylinder is equipped with a top plate, and an upper mold base is located below the top plate. A base is located inside the machine housing, and a lower mold base is located above the base.

[0028] The frame serves as the supporting structure for the entire stamping and trimming device. Its base and top plate design provide a stable framework for the device. The housing not only protects the drive cylinder from interference and damage from the external environment, but also ensures the safety of the drive cylinder during operation. As the power source of the device, the drive cylinder's output end is connected to the top plate. By moving the top plate up and down, it drives the upper die holder and the upper cutter to perform trimming operations.

[0029] Furthermore, the frame also includes a guide sleeve and a guide post, with the inner ring of the guide sleeve fitted around the outer ring of the guide post, and the guide sleeve and the guide post being slidably connected.

[0030] The cooperation between the guide sleeve and the guide post provides precise guidance for the up and down movement of the top plate, ensuring the stability and accuracy of the top plate during the movement process. This, in turn, guarantees the stability and accuracy of the upper mold base and the upper cutter during the cutting process, effectively reducing the cutting quality problems caused by movement deviations and improving the working reliability and cutting efficiency of the entire device.

[0031] Furthermore, the stamping and trimming device also includes two sets of edge pressing mechanisms, which are symmetrically placed on both sides of the upper cutter.

[0032] The symmetrical arrangement of the two sets of edge-pressing mechanisms ensures that both sides of the workpiece are subjected to uniform pressure during the edge-cutting process. This effectively prevents the workpiece from moving or deforming due to uneven force on one side, which not only improves the accuracy of edge cutting but also ensures the flatness and smoothness of the workpiece edge after edge cutting, further enhancing the quality and aesthetics of the workpiece.

[0033] Furthermore, the pressing mechanism includes a sliding block and a limiting spring. The limiting spring is provided on one side of the sliding block, and a telescopic component is provided below the sliding block.

[0034] Two symmetrical limiting grooves are provided on the lower part of the upper mold base;

[0035] The sliding block and the limiting spring are placed in the limiting groove, and the sliding block and the limiting groove are slidably connected. The edge of the upper cutter abuts against the telescopic component.

[0036] Before trimming, the upper cutter is installed on the connecting assembly, and its edge first contacts the telescopic assembly. Since the telescopic assembly slides on the upper mold base through the sliding block, the size of the upper cutter determines the extension and contraction of the limit spring, thereby limiting the sliding distance of the sliding block, so that the telescopic assembly is located on both sides of the upper cutter. When the upper mold base moves downward under the drive of the drive cylinder, the telescopic assembly moves downward, and the upper mold base drives the upper cutter to move downward, thereby completing the trimming of the workpiece.

[0037] Furthermore, the pressing mechanism also includes a compression spring, which is sleeved on one end of the telescopic assembly;

[0038] Before trimming: The lower edge of the upper cutter is placed above the edge-pressing block, and the edge-pressing block is placed above the lower die base;

[0039] During edge trimming: the pressure block and the lower die base abut against each other.

[0040] Before trimming, the position of the upper cutting blade is precisely adjusted to ensure that its lower cutting edge is directly above the blank holder block, which is positioned above the lower die base in a ready state. When the upper die base begins to descend under the drive of the drive cylinder, the entire trimming mechanism moves accordingly. The telescopic component moves downward with the descent of the upper die base, and the blank holder block connected to one end gradually approaches the lower die base. As the upper die base continues to descend, the blank holder block finally comes into close contact with the lower die base. During this process, the blank holder block applies uniform and stable pressure to the edge of the workpiece, effectively preventing any movement or deformation of the workpiece during trimming. Once the blank holder block is fully in contact with the lower die base and has secured the workpiece, the upper die base continues... The upper cutter continues to move downwards, and its blade contacts the edge of the workpiece, initiating the trimming operation. Since the workpiece is securely fixed, the upper cutter can precisely cut along the predetermined path, ensuring the accuracy of the trimming and the smoothness of the workpiece edge. After trimming, the upper die base begins to rise under the drive of the drive cylinder, and the upper cutter moves upwards accordingly. At the same time, the telescopic component gradually resets under the elastic force of the compression spring, pushing the blank holder block away from the lower die base and returning to its initial position, preparing for the next trimming operation. This design allows the blank holder mechanism to reset quickly and effectively after each trimming, improving the working efficiency and stability of the entire stamping trimming device.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention adapts to workpieces of different shapes and sizes by setting a clamping mechanism. The device utilizes the synergistic effect of the pressure bar, sliding shaft and rotating shaft to achieve automatic positioning and clamping of the workpiece edge, which greatly improves production efficiency and cutting accuracy. In addition, the design of the upper sliding groove and the lower sliding groove ensures the smoothness and stability of the sliding shaft movement, further improving the clamping effect. The pressure edge mechanism effectively prevents the workpiece from moving or deforming during the cutting process, ensuring the quality and accuracy of the cutting. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 for Figure 1 A magnified view of part A of the view;

[0044] Figure 3 This is a schematic diagram of the edge-cutting mechanism of the present invention;

[0045] Figure 4 for Figure 3 A magnified view of part B in the view;

[0046] Figure 5 This is a schematic diagram of the structure of the frame and the cutting mechanism of the present invention;

[0047] Figure 6This is a schematic diagram of the edge-cutting mechanism and the edge-pressing mechanism of the present invention;

[0048] Figure 7 This is a schematic diagram of the pressing mechanism of the present invention;

[0049] Figure 8 for Figure 7 A magnified view at point C in the view.

[0050] In the diagram: 1. Trimming mechanism; 11. Lower mold base; 111. Lower sliding groove; 112. Opening; 12. Upper mold base; 121. Limiting groove; 13. Connecting assembly; 14. Upper cutter; 15. Lower cutter; 2. Clamping mechanism; 21. Pressure bar; 211. Upper sliding groove; 22. Sliding shaft; 23. Rotating shaft; 24. Belt; 25. Rotary motor; 3. Edge pressing mechanism; 31. Sliding block; 32. Limiting spring; 33. Telescopic assembly; 34. Compression spring; 35. Edge pressing block; 4. Frame; 41. Base; 42. Top plate; 43. Guide sleeve; 44. Guide column; 5. Workpiece; 6. Machine housing; 7. Drive cylinder. Detailed Implementation

[0051] 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.

[0052] Example: Figures 1-8 As shown, the present invention provides a technical solution: a stamping and trimming device for sheet metal forming.

[0053] like Figures 1-3 As shown, a stamping and trimming device for sheet metal forming is used to punch off the waste edges of workpiece 5. The stamping and trimming device includes a trimming mechanism 1, a number of clamping mechanisms 2 are arranged circumferentially on the trimming mechanism 1, and a pressing mechanism 3 is provided on the trimming mechanism 1.

[0054] The trimming mechanism 1 includes a lower die base 11, on which a lower cutter 15 is provided;

[0055] The clamping mechanism 2 includes a pressure bar 21, a sliding shaft 22 and a rotating shaft 23. The upper end of the rotating shaft 23 is provided with the pressure bar 21. The pressure bar 21 and the sliding shaft 22 are slidably connected. The inner side of the pressure bar 21 is inclined.

[0056] The pressing mechanism 3 includes a telescopic component 33, and a pressing block 35 is provided below the telescopic component 33;

[0057] The sliding shaft 22 is slidably connected to the lower mold base 11, and the lower mold base 11 is rotatably connected to the rotating shaft 23. The workpiece 5 is placed inside the lower cutter 15, the lower part of the pressure strip 21 abuts against the edge of the workpiece 5, and the lower part of the pressure block 35 abuts against the edge of the workpiece 5.

[0058] After workpiece 5 is stamped, excess edges and burrs will be generated. The edge trimming mechanism 1 needs to remove the waste edges of workpiece 5. The overall shape of the lower cutter 15 matches that of workpiece 5, providing a fixed edge trimming platform for workpiece 5, so that workpiece 5 can be accurately placed in the lower cutter 15. Since the rotating shaft 23 is connected to the pressure strip 21, and the pressure strip 21 is slidably connected to the sliding shaft 22, and the sliding shaft 22 is slidably connected to the lower die base 11, the rotation of the rotating shaft 23 will drive the pressure strip 21 to move along the sliding shaft 22 until the pressure strip 21 moves along the sliding shaft 22. One side of the inclined surface of 1 abuts against the edge of the workpiece 5 that needs to be cut. Since the size and position of the edge of the workpiece 5 are different in different batches, the sliding shaft 22 contacts the edge of the workpiece 5 first when it slides during the rotation of the pressure strip 21. After the sliding shaft 22 stops, the pressure strip 21 also stops rotating and presses on the edge of the workpiece 5, thereby adaptively clamping the edge of the workpiece 5. In addition, the telescopic component 33 drives the pressure block 35 to move downward, so that the pressure block 35 abuts against the edge of the workpiece 5, further preventing the workpiece 5 from moving or deforming during the cutting process.

[0059] like Figure 4 As shown, an upper sliding groove 211 is provided below the pressure strip 21;

[0060] The lower mold base 11 is provided with a lower sliding groove 111;

[0061] The two ends of the sliding shaft 22 are slidably connected to the upper sliding groove 211 and the lower sliding groove 111, respectively.

[0062] The upper sliding groove 211 and the lower sliding groove 111 provide a precise sliding track for the sliding shaft 22, allowing the pressure bar 21 to move smoothly and accurately to the edge position of the workpiece 5 that needs to be cut under the drive of the rotating shaft 23. This not only improves the stability of clamping, but also ensures the accuracy of clamping. Even when facing workpieces 5 of different shapes and sizes, it can achieve adaptive clamping, thereby greatly improving the versatility and practicality of the device. Furthermore, the tight cooperation between the sliding shaft 22 and the upper sliding groove 211 and the lower sliding groove 111 effectively reduces vibration and deviation during the cutting process, further ensuring the quality and efficiency of cutting.

[0063] like Figure 2 As shown, the clamping mechanism 2 also includes a belt 24 and a rotary motor 25. The output end of the rotary motor 25 is provided with a pulley, which abuts against the belt 24. The belt 24 abuts against one end of the rotating shaft 23.

[0064] The lower mold base 11 has an opening 112 inside;

[0065] The belt 24 passes through the opening 112.

[0066] The rotary motor 25 serves as the power source, transmitting rotational power to the belt 24 through its output end contacting the belt 24. The belt 24 then drives the rotating shaft 23 to rotate. Since the rotating shaft 23 is connected to the pressure bar 21, the rotation of the rotating shaft 23 will drive the pressure bar 21 to rotate accordingly. The opening 112 inside the lower mold base 11 provides a passage for the belt 24 to pass through, ensuring that the belt 24 can smoothly connect the rotary motor 25 and the rotating shaft 23, thereby realizing the power transmission and motion coordination of the entire clamping mechanism 2.

[0067] like Figures 5-6 As shown, the trimming mechanism 1 also includes an upper mold base 12, a connecting component 13, and an upper cutter 14. The connecting component 13 is provided below the upper mold base 12, and the connecting component 13 is connected to the upper cutter 14.

[0068] The upper cutter 14 has a cavity inside;

[0069] The lower cutter 15 has a placement cavity inside;

[0070] The inner diameter of the cavity is larger than the inner diameter of the placement cavity.

[0071] The upper mold base 12 is connected to the upper cutter 14 via the connecting assembly 13, ensuring the stability and accuracy of the upper cutter 14 during the cutting process. The cutting edge of the upper cutter 14 matches the edge of the workpiece 5, and the overall shape of the placement cavity of the lower cutter 15 matches the workpiece 5, providing a fixed cutting platform for the workpiece 5. This allows the workpiece 5 to be accurately placed in the placement cavity of the lower cutter 15. Since the connecting assembly 13 and the upper cutter 14 are connected by a snap-fit, when the workpiece 5 is changed, the corresponding upper cutter 14 and lower cutter 15 are switched simultaneously. When part 5 is accurately placed inside the lower cutter 15, the pressure bar 21 presses against the waste edge of part 5 through adaptive adjustment. Then, the upper mold base 12 moves downward under the drive of the drive cylinder 7, and the upper cutter 14 moves downward accordingly, cooperating with the lower cutter 15 to accurately remove the waste edge of part 5. The design of the cavity inner diameter being larger than the placement cavity inner diameter provides a space to accommodate the waste generated during the cutting process, preventing the waste from getting stuck between the upper cutter 14 and the lower cutter 15 and affecting the cutting effect. This design not only ensures the quality of the cutting but also makes the edge of part 5 smoother and flatter.

[0072] like Figure 1 As shown, the stamping and trimming device also includes a frame 4, a drive cylinder 7 and a housing 6, with the drive cylinder 7 housed inside the housing 6;

[0073] The frame 4 includes a base 41 and a top plate 42;

[0074] The output end of the drive cylinder 7 is provided with a top plate 42, and an upper mold base 12 is provided below the top plate 42. A base 41 is provided inside the housing 6, and a lower mold base 11 is provided above the base 41.

[0075] The frame 4 serves as the supporting structure for the entire stamping and trimming device. The design of its base 41 and top plate 42 provides a stable frame for the device. The housing 6 not only protects the drive cylinder 7 from interference and damage from the external environment, but also ensures the safety of the drive cylinder 7 during operation. As the power source of the device, the drive cylinder 7 has its output end connected to the top plate 42. By moving the top plate 42 up and down, it drives the upper die holder 12 and the upper cutter 14 to perform trimming operations.

[0076] like Figure 5 As shown, the frame 4 also includes a guide sleeve 43 and a guide post 44. The inner ring of the guide sleeve 43 is fitted around the outer ring of the guide post 44, and the guide sleeve 43 and the guide post 44 are slidably connected.

[0077] The cooperation between the guide sleeve 43 and the guide post 44 provides precise guidance for the up and down movement of the top plate 42, ensuring the stability and accuracy of the top plate 42 during the movement process. This, in turn, ensures the stability and accuracy of the upper mold base 12 and the upper cutter 14 during the edge cutting process, effectively reducing edge cutting quality problems caused by movement deviations and improving the working reliability and edge cutting efficiency of the entire device.

[0078] like Figure 6 As shown, the stamping and trimming device also includes two sets of edge pressing mechanisms 3, which are symmetrically arranged on both sides of the upper cutter 14.

[0079] The symmetrical arrangement of the two sets of edge pressing mechanisms 3 ensures that both sides of the workpiece 5 are subjected to uniform pressure during the edge cutting process. This effectively prevents the workpiece 5 from moving or deforming due to uneven force on one side. It not only improves the accuracy of edge cutting but also ensures the flatness and smoothness of the edge of the workpiece 5 after edge cutting, further enhancing the quality and aesthetics of the workpiece 5.

[0080] like Figures 7-8 As shown, the pressing mechanism 3 includes a sliding block 31 and a limiting spring 32. The limiting spring 32 is provided on one side of the sliding block 31, and a telescopic component 33 is provided below the sliding block 31.

[0081] The upper mold base 12 is provided with two symmetrical limiting grooves 121;

[0082] The sliding block 31 and the limiting spring 32 are placed in the limiting groove 121. The sliding block 31 and the limiting groove 121 are slidably connected, and the edge of the upper cutter 14 abuts against the telescopic component 33.

[0083] Before trimming, the upper cutter 14 is installed on the connecting assembly 13. Its edge first contacts the telescopic assembly 33. Since the telescopic assembly 33 slides on the upper mold base 12 through the sliding block 31, the size of the upper cutter 14 determines the extension and retraction of the limit spring 32, thereby limiting the sliding distance of the sliding block 31. This makes the telescopic assembly 33 located on both sides of the upper cutter 14. When the upper mold base 12 moves downward under the drive of the driving cylinder 7, the telescopic assembly 33 moves downward, and the upper mold base 12 drives the upper cutter 14 to move downward, thereby completing the trimming of the workpiece 5.

[0084] like Figure 7 As shown, the pressing mechanism 3 also includes a compression spring 34, which is sleeved on one end of the telescopic component 33;

[0085] Before trimming: The lower end of the upper cutter 14 is positioned above the edge pressing block 35, and the edge pressing block 35 is positioned above the lower die base 11;

[0086] During edge trimming: the pressure block 35 and the lower die holder 11 abut against each other.

[0087] Before trimming, the position of the upper cutter 14 is precisely adjusted to ensure that its lower blade is directly above the pressing block 35, which is positioned above the lower die base 11 in a ready state. When the upper die base 12 begins to descend under the drive of the drive cylinder 7, the entire trimming mechanism 1 moves accordingly. The telescopic component 33 moves downward as the upper die base 12 descends, and the pressing block 35 connected to one end gradually approaches the lower die base 11. As the upper die base 12 continues to descend, the pressing block 35 finally comes into close contact with the lower die base 11. During this process, the pressing block 35 applies uniform and stable pressure to the edge of the workpiece 5, effectively preventing the workpiece 5 from moving or deforming during the trimming process. After the pressing block 35 is fully in contact with the lower die base 11 and the workpiece 5 is fixed in place, The upper die holder 12 continues to drive the upper cutter 14 to move downwards. The blade of the upper cutter 14 contacts the edge of the workpiece 5 and begins to perform the trimming operation. Since the workpiece 5 has been firmly fixed, the upper cutter 14 can accurately cut along the predetermined path, ensuring the trimming accuracy and the smoothness of the workpiece 5 edge. After the trimming is completed, the upper die holder 12 begins to rise under the drive of the drive cylinder 7, and the upper cutter 14 moves upwards accordingly. At the same time, the telescopic component 33 gradually resets under the elastic force of the compression spring 34, pushing the pressing block 35 away from the lower die holder 11 and returning to the initial position, preparing for the next trimming operation. This design enables the pressing mechanism 3 to reset quickly and effectively after each trimming, improving the working efficiency and stability of the entire stamping trimming device.

[0088] Working principle of the invention:

[0089] In the initial state, the workpiece 5 to be trimmed is placed in the lower cutter 15 inside the lower die base 11. The rotary motor 25 is started, and during the rotation of the rotating shaft 23, the pressure bar 21 moves along the sliding shaft 22 until the lower part of the pressure bar 21 is in close contact with the edge of the workpiece 5 to be trimmed, realizing adaptive clamping of the edge of the workpiece 5, ensuring the stability and accuracy of clamping, so as to adapt to workpieces 5 of different shapes and sizes. When the upper cutter 14 is installed, the upper cutter 14 pushes the telescopic components 33 on both sides outward, so that the edge pressing block 35 can press the edge of the workpiece 5, further preventing the workpiece 5 from moving or deforming during the trimming process. Then, the drive cylinder 7 starts to work, driving the upper die base 12 and the upper cutter 14 to move downward synchronously. When the upper cutter 14 and the lower cutter 15 come into contact, they work together to complete the trimming operation on the workpiece 5. After trimming, the drive cylinder 7 drives the upper mold base 12 and the upper cutter 14 to move upward and away from the lower mold base 11 and the lower cutter 15. The rotary motor 25 reverses, causing the pressure bar 21 to release its grip on the workpiece 5. At this time, the trimmed workpiece 5 can be taken out from the lower mold base 11, completing the entire trimming process.

[0090] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stamping and trimming device for sheet metal forming, the stamping and trimming device being used to punch off the waste edges of a workpiece (5), characterized in that: The stamping and trimming device includes a trimming mechanism (1), which has several sets of clamping mechanisms (2) arranged circumferentially, and a pressing mechanism (3) is provided on the trimming mechanism (1). The trimming mechanism (1) includes a lower die base (11), and a lower cutter (15) is provided on the lower die base (11). The clamping mechanism (2) includes a pressure bar (21), a sliding shaft (22) and a rotating shaft (23). The upper end of the rotating shaft (23) is provided with a pressure bar (21). The pressure bar (21) and the sliding shaft (22) are slidably connected. The inner side of the pressure bar (21) is inclined. The pressing mechanism (3) includes a telescopic component (33), and a pressing block (35) is provided below the telescopic component (33). The sliding shaft (22) and the lower mold base (11) are slidably connected, the lower mold base (11) and the rotating shaft (23) are rotatably connected, the workpiece (5) is placed inside the lower cutter (15), the pressure strip (21) abuts against the workpiece (5) below, and the pressure block (35) abuts against the workpiece (5) below.

2. The stamping and trimming device for sheet metal forming according to claim 1, characterized in that: The pressure strip (21) is provided with an upper sliding groove (211) below it; The lower mold base (11) is provided with a lower sliding groove (111); The two ends of the sliding shaft (22) are slidably connected to the upper sliding groove (211) and the lower sliding groove (111), respectively.

3. The stamping and trimming device for sheet metal forming according to claim 2, characterized in that: The clamping mechanism (2) also includes a belt (24) and a rotary motor (25). The output end of the rotary motor (25) is provided with a pulley. The pulley and the belt (24) abut against each other. The belt (24) and one end of the rotating shaft (23) abut against each other. The lower mold base (11) has an opening (112) inside. The belt (24) passes through the opening (112).

4. The stamping and trimming device for sheet metal forming according to claim 3, characterized in that: The trimming mechanism (1) further includes an upper mold base (12), a connecting component (13) and an upper cutter (14). The connecting component (13) is provided below the upper mold base (12), and the connecting component (13) and the upper cutter (14) are connected. The upper cutter (14) has a cavity inside; The lower cutter (15) has a placement cavity inside; The inner diameter of the cavity is larger than the inner diameter of the placement cavity.

5. The stamping and trimming device for sheet metal forming according to claim 4, characterized in that: The stamping and trimming device also includes a frame (4), a drive cylinder (7) and a housing (6), wherein the drive cylinder (7) is provided inside the housing (6). The frame (4) includes a base (41) and a top plate (42); The output end of the drive cylinder (7) is provided with a top plate (42), and an upper mold base (12) is provided below the top plate (42). A base (41) is provided inside the housing (6), and a lower mold base (11) is provided above the base (41).

6. The stamping and trimming device for sheet metal forming according to claim 5, characterized in that: The frame (4) also includes a guide sleeve (43) and a guide post (44), the inner ring of the guide sleeve (43) is fitted around the outer ring of the guide post (44), and the guide sleeve (43) and the guide post (44) are slidably connected.

7. The stamping and trimming device for sheet metal forming according to claim 6, characterized in that: The stamping and trimming device also includes two sets of edge pressing mechanisms (3), which are symmetrically placed on both sides of the upper cutter (14).

8. The stamping and trimming device for sheet metal forming according to claim 7, characterized in that: The pressing mechanism (3) includes a sliding block (31) and a limiting spring (32). The limiting spring (32) is provided on one side of the sliding block (31), and a telescopic component (33) is provided below the sliding block (31). The upper mold base (12) is provided with two symmetrical limiting grooves (121); The sliding block (31) and the limiting spring (32) are placed in the limiting groove (121). The sliding block (31) and the limiting groove (121) are slidably connected. The edge of the upper cutter (14) abuts against the telescopic component (33).

9. A stamping and trimming device for sheet metal forming according to claim 8, characterized in that: The pressing mechanism (3) also includes a compression spring (34), which is sleeved on one end of the telescopic assembly (33); Before trimming: The lower blade of the upper cutter (14) is placed above the pressing block (35), and the pressing block (35) is placed above the lower mold base (11); During edge trimming: the pressing block (35) and the lower die base (11) abut against each other.

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