High-strength steel bending springback compensation structure, bending die and application method

Abstract

The invention relates to the technical field of sheet metal machining, and provides a high-strength steel bending springback compensation structure, a bending die and an application method.The high-strength steel bending springback compensation structure comprises a die head, a guide rail, a jacking part, an adjusting part and a driving part, and the guide rail is arranged on one side of the die head; the jacking piece is arranged between the die head and the guide rail in a sliding manner, and gaps are reserved among the jacking piece, the die head and the guide rail; the adjusting piece penetrates through the top pressing piece; the driving piece is used for driving the adjusting piece so that the adjusting piece can position or push the jacking piece. According to the invention, the jacking and pressing piece is arranged between the guide rail and the die head, so that the jacking and pressing piece can be limited, and meanwhile, the driving piece can drive the jacking and pressing piece to move through the adjusting piece, so that the die head can be jacked and deformed, and elastic compensation is realized; meanwhile, as the gaps are reserved between the jacking piece and the die head as well as between the jacking piece and the guide rail, the jacking piece is driven by the jacking piece to abut against the die head without a rigid connection structure, and the die has the advantages of being stable in application and not prone to failure.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, and in particular to a high-strength steel bending springback compensation structure, bending die, and application method. Background Technology

[0002] In the field of machining, sheet metal processing technology is widely used, including several processing methods such as shearing, punching, and cutting, mainly for shaping metal sheets. When stamping and bending metal sheets, the higher the strength of the sheet, the more severe the springback phenomenon tends to be, which will affect the subsequent processing and assembly of sheet metal parts. The reasons for the springback problem of sheet metal are, on the one hand, due to the inherent characteristics of the sheet metal itself, and on the other hand, due to the uneven force applied to the sheet metal by the die head. Therefore, springback compensation is required to ensure that the processed workpiece meets the requirements.

[0003] An existing invention patent with authorization announcement number CN110076241B discloses a bending springback intelligent compensation device, a progressive die, and a bending springback compensation method. This bending springback intelligent compensation device includes a detection mechanism, a forming mechanism, and a control system. During operation, the detection mechanism first detects the springback amount of the stamped part after bending. The control system calculates the corresponding compensation amount based on the detection results, thereby controlling the adjustment components in the forming mechanism to adjust the extension and retraction of the forming block, achieving an intelligent compensation effect.

[0004] As described above, the technical solution detects the springback of the stamped part, calculates the corresponding compensation amount, and then uses a shaping block to shape the bent part to achieve the compensation effect. However, this solution is only suitable for compensating for shorter bent parts. Shorter bent parts usually only have a springback problem at the bending angle and do not have a curvature problem. For longer bent parts, such as a right-angle plate bent at 90°, if its length is long, both ends can be bent to 90°. Due to the uneven pressure of the die head, the middle of the right-angle plate cannot be accurately bent to 90°. That is, the bent part of the right-angle plate will have an arc-shaped structure from one end to the other, which will affect subsequent processing and equipment. In existing technical solutions, the die head is adjusted, usually by using a wedge to push the die head, causing it to bend. This allows for a more uniform force to be applied to the sheet metal during bending. However, since the wedge has a certain width, the deflection can easily affect the connection structure between the wedge and the sheet metal when the die head and slide rail bend. Another method is to use a wave table to lift the slide rail and die head. However, since the wave curvature is predetermined, the adjustable range of the deflection is fixed when adjusting the die head deflection, which limits its applicability. Summary of the Invention

[0005] In view of this, the present invention proposes a high-strength steel bending springback compensation structure, bending die and application method with stable connection structure and wide applicability, so as to solve the problems of easy failure of connection structure and limited applicability of existing compensation structures.

[0006] The technical solution of this invention is implemented as follows: On one hand, the present invention provides a high-strength steel bending springback compensation structure, including a die head, a guide rail, a pressing component, an adjusting component, and a driving component, wherein, The die head is used for stamping steel; The guide rail is located on one side of the mold head; The ejector pin is slidably positioned between the die head and the guide rail, and a gap is left between the ejector pin, the die head, and the guide rail; The adjusting component passes through the pressing component, and the adjusting component and the pressing component are in sliding fit; The driving component is used to drive the adjusting component to position the adjusting component or push the pressing component.

[0007] Based on the above technical solutions, preferably, the pressing component includes a top plate, a top block, and a push ring, wherein, The top plate is slidably positioned between the die head and the guide rail; The top block is positioned between the top plate and the mold head, and the top block and the top plate are detachably connected. The push ring is located on the side of the top plate away from the top block, and a slot is provided on the side of the push ring away from the top plate, through which the adjusting component passes.

[0008] Based on the above technical solutions, preferably, the push ring is made of elastic material, the adjusting member is made of rigid material and has a columnar structure, and the adjusting member is provided with a first pressing part, a first positioning part, a reset part, a second positioning part and a second pressing part from one end to the other. The first pressing part and the second pressing part are in the form of a cam structure, and the protruding parts of the first pressing part and the second pressing part correspond to the slot. The first and second positioning parts have a conical structure, and the two ends of the push ring are provided with conical grooves; The reset part has a cylindrical structure.

[0009] Based on the above technical solutions, preferably, it also includes a carrier frame, and the driving components include a motor, a lead screw, and a guide rod, wherein... The carrier frame and the mold head are fixed relative to each other; The motor is mounted on the carrier. The lead screw and the adjusting component are connected by a thread, and one end of the lead screw is connected to the main shaft of the motor; There are multiple guide rods, each with one end connected to the carrier frame and the other end inserted into the first pressing part or the first positioning part.

[0010] Based on the above technical solutions, preferably, a guide component is also included, which comprises a limiting plate, a slide rail, and a connecting plate, wherein... The carrier has a C-shaped structure, and the opening of the carrier faces the mold head; Two limiting plates are provided at the opening of the carrier frame, and the limiting plates abut against the top plate; One slide rail is provided on each of the two limit plates; There are two connecting plates. One end of each connecting plate is connected to the carrier frame, and the other end of each connecting plate is slidably connected to a slide rail.

[0011] Based on the above technical solutions, preferably, it also includes a reset component, which comprises a limiting frame and a limiting block, wherein, The limiting frame is set between the carrier and the top plate, and the limiting frame is connected to the carrier; The limiting frame has an opening on the side facing the top plate; The push ring is set inside the limit frame and connected to the top plate through an opening; The limiting block is located inside the limiting frame and abuts against the push ring. The limiting block is made of elastic material.

[0012] Based on the above technical solutions, preferably, the guide rod connected to the first pressing part or the second pressing part is connected to the carrier frame by plugging, and the guide rod passes through the carrier frame and is detachable.

[0013] On the other hand, the present invention provides a bending die, including the above-mentioned high-strength steel bending springback compensation structure.

[0014] Based on the above technical solutions, the preferred embodiment also includes a frame plate, a lead screw module, and a bottom mold, wherein... Multiple adjustment modules consisting of guide rails, top pressing components, adjustment components, and driving components are provided between the frame plate and the mold head; The lead screw module is fixed relative to the die head, and the movable end of the lead screw module is connected to the frame plate; The bottom mold and the mold head are set opposite each other.

[0015] Furthermore, the present invention provides a method for applying the above-mentioned bending die, comprising the following steps: S1. Calculate the springback parameters of the sheet material to be bent to determine the springback range of the sheet material to be bent; S2. The adjusting component is moved by the driving component, so that the adjusting component pushes the pressing component, and then the pressing component pushes the die head, causing the die head to deform. S3. Place the die head corresponding to the plate to be bent, and then move the high-strength steel bending springback compensation structure as a whole to punch and bend the plate to be bent. S4. After stamping is completed, the bent sheet is removed and the high-strength steel bending springback compensation structure is fully reset. S5. The adjusting component is moved by the driving component so that the adjusting component positions the pressing component.

[0016] The high-strength steel bending springback compensation structure, bending die, and application method of the present invention have the following advantages over the prior art: (1) By setting the top pressing component between the guide rail and the die head, the top pressing component can be limited. The driving component can move the top pressing component through the adjusting component, thereby pushing the die head and deforming the die head to achieve elastic compensation. At the same time, since there is a gap between the top pressing component and the die head and the guide rail, it is driven by the top pressing component to hold the die head. Therefore, there is no need for a connecting component to connect the top pressing component to the die head or the plate on which the die head is installed. It does not have a rigid connection structure, so it has the advantages of stable application and not easy to fail. (2) The top pressing component consists of a top plate, a top block and a push ring, and the push ring has a groove. When the adjusting component is displaced within the push ring, the push ring will expand and move towards the die head, thereby driving the die head to deform. (3) The push ring is made of elastic material, while the adjusting part is made of rigid material and has a first pressing part, a first positioning part, a reset part, a second positioning part and a second pressing part. Since the first pressing part and the second pressing part are set as cam structures, firstly, after entering the push ring, they can make the push ring expand and push the die head. Secondly, they can be rotated to make the cam face the die head, which can change the pushing amplitude and thus change the deformation amplitude of the die head. The first pressing part or the second pressing part can also be selectively used to push the die head, which expands the compensation range and improves the applicability of this springback compensation structure. (4) By setting a guide component, which is connected to the carrier through a limiting plate, the limiting plate is connected to the connecting plate through a slide rail, and the connecting plate abuts against the top plate of the pressing component. With the limiting of the guide rail, it can be ensured that the pressing component is aligned with the pressing position of the die head, and the whole structure has no rigid connection mechanism. When the die head is deformed, the structure is not easy to fail. At the same time, it is also convenient for the whole structure to move along the guide rail to adjust the relative position of the pressing component and the die head. (5) By setting a reset component consisting of a limit frame and a limit block, firstly, after the pressing component moves, the limit block will tighten the push ring of the pressing component to ensure stable position. Secondly, after the pressing is completed and the pressing component is reset, the push ring can be forced to close under the action of the limit block to fit the reset part of the adjusting component. This can avoid the problem of the push ring expanding for a long time, causing the gap to become larger and the subsequent structural damage. (6) By connecting the first pressing part or the second pressing part to the guide rod and setting it to be connected to the carrier in a plug-in manner, and making it a detachable structure, and with only one end of the guide rod plugged into the first pressing part or the second pressing part, it is convenient to disassemble the guide rod to change the direction of the first pressing part or the second pressing part, selectively making the protruding part or the other side correspond to the mold head, the pushing amplitude can be changed, thereby realizing the adjustment of the compensation amplitude, which has the advantage of convenient application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the high-strength steel bending springback compensation structure of the present invention; Figure 2 This is a diagram showing the connection structure of the guide rail, top pressure component, and adjustment component of the high-strength steel bending springback compensation structure of the present invention. Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a split structural diagram of the adjusting component and the driving component of the high-strength steel bending springback compensation structure of the present invention; Figure 5 This is a perspective view of the top pressure component of the high-strength steel bending springback compensation structure of the present invention; Figure 6 This is an exploded view of the top pressure component of the high-strength steel bending springback compensation structure of the present invention; Figure 7 This is a perspective view of the adjusting component of the high-strength steel bending springback compensation structure of the present invention; Figure 8 This is a side view of the high-strength steel bending springback compensation structure of the present invention; In the diagram: 1. Die head; 2. Guide rail; 3. Top pressing component; 31. Top plate; 32. Top block; 33. Push ring; 301. Groove; 302. Tapered groove; 4. Adjusting component; 41. First top pressing part; 42. First positioning part; 43. Reset part; 44. Second positioning part; 45. Second top pressing part; 5. Driving component; 51. Motor; 52. Lead screw; 53. Guide rod; 6. Carrier frame; 7. Guide component; 71. Limiting plate; 72. Slide rail; 73. Connecting plate; 8. Reset component; 81. Limiting frame; 82. Limiting block; 9. Frame plate; 10. Lead screw module; 11. Bottom mold. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-8 As shown, the high-strength steel bending springback compensation structure of the present invention includes a die head 1, a guide rail 2, a top pressing component 3, an adjusting component 4, a driving component 5, a carrier frame 6, a guide component 7, a reset component 8, a frame plate 9, a lead screw module 10, and a bottom die 11.

[0021] like Figures 1-3 As shown, the die head 1 is used to stamp steel; the guide rail 2 is set on one side of the die head 1; the top pressing part 3 is slidably set between the die head 1 and the guide rail 2, and there is a gap between the top pressing part 3 and the die head 1 and the guide rail 2. As described above, the die head 1 is used to apply pressure to the workpiece, thereby achieving the bending operation of the workpiece; Among them, the guide rail 2 is used to limit the pressing part 3 so that the pressing part 3 corresponds to the adjustment part of the die head 1; During adjustment, the top pressure component 3 applies a top force to the die head 1, thereby forcing the die head 1 to bulge and deform. In this way, angle compensation can be achieved during bending, so that the longer plate has the correct bending angle after bending. In this structure, there is a gap between the top pressing component 3, the die head 1, and the guide rail 2. The top pressing component 3 does not need to be connected to the die head 1 through a rigid structure. It only contacts the die head 1 when it is in motion. This will prevent the structural connection from failing and ensure the stability of the structure. Specifically, the guide rail 2 is composed of two L-shaped plates, which can limit the position of the top pressing part 3 and prevent the guide rail 2 from affecting the fit between the top pressing part 3 when the die head 1 deflects during application, thus ensuring the stability of the application.

[0022] like Figure 2 As shown, the adjusting member 4 passes through the pressing member 3, and the adjusting member 4 and the pressing member 3 are in sliding fit; the driving member 5 is used to drive the adjusting member 4 so that the adjusting member 4 is positioned or pushes the pressing member 3. As described above, the adjusting member 4 is used to push the top pressing member 3, while the driving member 5 is used to provide the power for the adjusting member 4 to move. When applied in this way, the driving member 5 drives the adjusting member 4 to move, and then the adjusting member 4 pushes the top pressing member 3 to contact the mold head 1. There is no need to connect and fix the top pressing member 3 to the mold head 1.

[0023] like Figure 4 and Figure 5As shown, the top pressing component 3 includes a top plate 31, a top block 32, and a push ring 33. The top plate 31 is slidably disposed between the die head 1 and the guide rail 2. The top block 32 is disposed between the top plate 31 and the die head 1, and the top block 32 and the top plate 31 are detachably connected. The push ring 33 is disposed on the side of the top plate 31 away from the top block 32, and the side of the push ring 33 away from the top plate 31 is provided with a slot 301. The adjusting component 4 passes through the push ring 33. As described above, the top pressing member 3 is composed of a top plate 31, a top block 32 and a push ring 33, and the push ring 33 has a slot 301. When the adjusting member 4 is displaced within the push ring 33, the push ring 33 will expand and move toward the die head 1, thereby pushing the die head 1 to deform. The top plate 31 is slidably disposed between the die head 1 and the guide rail 2 to ensure that the corresponding position of the top pressing part 3 and the die head 1 is correct; The top block 32 contacts the mold head 1 or the plate on which the mold head 1 is mounted. The top block 32 and the top plate 31 are designed to be detachable, so that the shape or position of the top block 32 can be adjusted to ensure the stability and accuracy of the constant pressure adjustment.

[0024] like Figures 4-7 As shown, the push ring 33 is made of an elastic material, and the adjusting member 4 is made of a rigid material and has a columnar structure. The adjusting member 4 is provided with a first pressing part 41, a first positioning part 42, a reset part 43, a second positioning part 44, and a second pressing part 45 in sequence from one end to the other. The first pressing part 41 and the second pressing part 45 have a cam structure, and the protruding parts of the first pressing part 41 and the second pressing part 45 correspond to the slot 301. The first positioning part 42 and the second positioning part 44 have a conical structure, and the two ends of the push ring 33 are provided with conical grooves 302. The reset part 43 has a cylindrical structure. As described above, the adjusting member 4 has a first pressing part 41, a first positioning part 42, a reset part 43, a second positioning part 44, and a second pressing part 45, and the whole presents a variable diameter columnar structure. Among them, the diameters of the first pressing part 41 and the second pressing part 45 are larger than the diameters of the first positioning part 42, the reset part 43 and the second positioning part 44, and the diameter of the reset part 43 is the smallest. In the initial state, the reset part 43 corresponds to the push ring 33. Under the drive of the drive member 5, the first pressing part 41 or the second pressing part 45 can enter the push ring 33, so the push ring 33 will expand and move towards the die head 1, completing the pushing deformation of the die head 1. Specifically, the push ring 33 is made of high-strength elastic plastic or other materials with good wear resistance. Since the first pressing part 41 and the second pressing part 45 can selectively enter the push ring 33, and the first pressing part 41 and the second pressing part 45 are configured as cam structures, they can also selectively make one side with the protruding structure or the other side correspond to the die head 1. This can also adjust the pushing amount on the die head 1, thereby having a larger compensation range, effectively improving the applicability of this compensation structure, and its versatility is good. After compensation is completed, the reset part 43 will be aligned with the push ring 33 again under the drive of the drive component 5, so that the push ring 33 will close to avoid structural failure due to long-term expansion. Specifically, the end of the push ring 33 is provided with a conical groove 302. When the reset part 43 corresponds to the push ring 33, the first positioning part 42 or the second positioning part 44 can abut against the conical groove 302 to achieve the positioning of the push ring 33, thereby ensuring the stability of the position and avoiding the shaking and wear problem of the top pressing part 3 when no adjustment is needed.

[0025] like Figure 4 As shown, the driving component 5 includes a motor 51, a lead screw 52, ​​and guide rods 53. The carrier frame 6 is fixed relative to the mold head 1. The motor 51 is mounted on the carrier frame 6. The lead screw 52 is threadedly engaged with the adjusting component 4, and one end of the lead screw 52 is connected to the main shaft of the motor 51. Multiple guide rods 53 are provided, and each guide rod 53 has one end connected to the carrier frame 6 and the other end inserted into the first pressing part 41 or the second pressing part 45. As described above, by driving the lead screw 52 to rotate via the motor 51, the adjusting member 4 can be moved within the push ring 33. This allows the first pressing part 41, the first positioning part 42, the reset part 43, the second positioning part 44, and the second pressing part 45 to selectively correspond to the push ring 33. The guide rod 53 is used to circumferentially limit the adjusting member 4 to prevent the adjusting member 4 from rotating along with the lead screw 52; Specifically, the guide rod 53 is inserted and fixed to the first pressing part 41 or the second pressing part 45, so that after the guide rod 53 is removed, it is convenient to rotate the adjusting part 4, thereby making it convenient to adjust the orientation of the protruding part of the cam mechanism of the first pressing part 41 and the second pressing part 45. In some embodiments, the first pressing part 41 is rotatably connected to the first positioning part 42, and the second positioning part 44 is rotatably connected to the second pressing part 45. In this way, only one side of the guide rod 53 needs to be removed to allow the first pressing part 41 or the second pressing part 45 to be rotated and adjusted, which can improve the convenience of adjusting this compensation structure. The above-mentioned structural configurations ensure that the drive component 5 occupies little space, thus effectively reducing the thickness of this compensation structure and improving space utilization. At the same time, this structure has good pressure bearing capacity, which ensures the stability of the structure.

[0026] Specifically, the guide rod 53 connected to the first pressing part 41 or the second pressing part 45 is connected to the carrier 6 by a plug-in connection, and the guide rod 53 passes through the carrier 6 and is detachable; As described above, the guide rod 53 is inserted into the carrier 6 and passes through the carrier 6, which makes it easy to pull the guide rod 53 out from the outside of the carrier 6. Then the adjusting member 4 can be rotated to adjust the orientation of the protruding part of the cam structure. Specifically, the guide rod 53 is connected to the carrier 6 by a threaded connection.

[0027] like Figure 4 As shown, the guide component 7 includes a limiting plate 71, a slide rail 72, and a connecting plate 73. The carrier 6 has a C-shaped structure, and the opening of the carrier 6 faces the mold head 1. Two limiting plates 71 are provided at the opening of the carrier 6, and the limiting plates 71 abut against the top plate 31. There is one slide rail 72 on each of the two limiting plates 71. There are two connecting plates 73, one end of each connecting plate 73 is connected to the carrier 6, and the other end of each connecting plate 73 is slidably connected to one slide rail 72. As described above, the guide member 7 is used to guide the movement of the pressing member 3 and at the same time ensure that the pressing member 3 is in the correct position. Among them, the limiting plate 71 abuts against the top plate 31 of the pressing member 3, and the two only have a contact relationship and do not have a rigid connection; specifically, the thickness of the limiting plate 71 and the top plate 31 should be greater than the gap between the top plate 31 and the mold head 1 and the guide rail 2, so as to avoid the problem that the limiting plate 71 cannot stably abut against the top plate 31. The slide rail 72 is mounted on the limiting plate 71, and the connecting plate 73 is connected to the carrier 6 and slides with the slide rail 72. Thus, when the pressing member 3 moves, the limiting plate 71 can move the pressing member 3, and the limiting plate 71 can also slide relative to the connecting plate 73 to avoid excessive friction and wear. Furthermore, the carrier 6 can be driven by the drive component to move along the guide rail 2. Thus, under the limitation of the two limit plates 71, it can also drive the top pressing component 3 to move synchronously. The adjusting component 4 will move synchronously under the drive of the drive component 5 to adjust the position of the corresponding mold head 1, so as to facilitate the precise top pressing adjustment of the mold head 1.

[0028] like Figure 6 As shown, the reset component 8 includes a limiting frame 81 and a limiting block 82. The limiting frame 81 is disposed between the carrier 6 and the top plate 31 and is connected to the carrier 6. The limiting frame 81 has an opening on the side facing the top plate 31. The push ring 33 is disposed inside the limiting frame 81 and is connected to the top plate 31 through the opening. The limiting block 82 is disposed inside the limiting frame 81 and abuts against the push ring 33. The limiting block 82 is made of elastic material. As described above, by setting a reset member 8 consisting of a limit frame 81 and a limit block 82, the limit block 82 will first tighten the push ring 33 of the top pressing member 3 after the top pressing member 3 moves, so as to ensure the position is stable. Secondly, after the pressing is completed and the pressing component 3 is reset, the push ring 33 can be forced to close under the action of the limiting block 82 so as to fit tightly against the reset part 43 of the adjusting component 4. This can avoid the problem of the push ring 33 expanding for a long time, causing the gap to become larger and the subsequent structural damage. Specifically, the limit block 82 is made of wear-resistant rubber material.

[0029] The bending die of the present invention includes the above-mentioned high-strength steel bending springback compensation structure.

[0030] like Figure 1 As shown, multiple adjustment modules consisting of guide rails 2, pressing components 3, adjusting components 4, and driving components 5 are provided between the frame plate 9 and the mold head 1; the lead screw module 10 is fixed relative to the mold head 1, and the movable end of the lead screw module 10 is connected to the frame plate 9; the bottom mold 11 is arranged opposite to the mold head 1. As described above, the frame plate 9 is used to connect the body of the bending machine. It can adjust the different positions of the die head 1 through multiple adjustment modules composed of guide rail 2, top pressure component 3, adjustment component 4 and drive component 5 to meet the elastic compensation requirements. The lead screw module 10 is used to drive the compensation structure to move, so as to adjust the corresponding position with the mold head 1. The bottom mold 11 is used to cooperate with the mold head 1 for bending work.

[0031] The application method of the bending die of the present invention includes the following steps: S1. Calculate the springback parameters of the sheet material to be bent to determine the springback range of the sheet material to be bent; S2. The adjusting member 4 is moved by the driving member 5 so that the adjusting member 4 pushes the pressing member 3, and then the pressing member 3 pushes the die head 1, causing the die head 1 to deform. S3. Place the plate to be bent into the corresponding die head 1, and then move the high-strength steel bending springback compensation structure as a whole to punch and bend the plate to be bent. S4. After stamping is completed, the bent sheet is removed and the high-strength steel bending springback compensation structure is fully reset. S5. The adjusting member 4 is moved by the driving member 5 so that the adjusting member 4 positions the pressing member 3.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 high-strength steel bending springback compensation structure, characterized in that: It includes a die head (1), a guide rail (2), an ejector pin (3), an adjusting pin (4), and a driving pin (5), wherein, The die head (1) is used for stamping steel; The guide rail (2) is disposed on one side of the mold head (1); The top pressing component (3) is slidably disposed between the die head (1) and the guide rail (2), and a gap is left between the top pressing component (3) and the die head (1) and the guide rail (2); The adjusting member (4) passes through the pressing member (3), and the adjusting member (4) and the pressing member (3) are in sliding fit; The driving member (5) is used to drive the adjusting member (4) so ​​that the adjusting member (4) positions or pushes the top pressure member (3).

2. The high-strength steel bending springback compensation structure as described in claim 1, characterized in that: The top pressing component (3) includes a top plate (31), a top block (32), and a push ring (33), wherein, The top plate (31) is slidably disposed between the mold head (1) and the guide rail (2); The top block (32) is disposed between the top plate (31) and the mold head (1), and the top block (32) and the top plate (31) are detachably connected; The push ring (33) is located on the side of the top plate (31) away from the top block (32), and the push ring (33) is provided with a slot (301) on the side away from the top plate (31), and the adjusting member (4) passes through the push ring (33).

3. The high-strength steel bending springback compensation structure as described in claim 2, characterized in that: The push ring (33) is made of elastic material, the adjusting member (4) is made of rigid material and has a columnar structure, and the adjusting member (4) is provided with a first pressing part (41), a first positioning part (42), a reset part (43), a second positioning part (44) and a second pressing part (45) from one end to the other. The first pressing part (41) and the second pressing part (45) are in the form of a cam structure, and the protruding parts of the first pressing part (41) and the second pressing part (45) correspond to the slot (301). The first positioning part (42) and the second positioning part (44) have a conical structure, and the two ends of the push ring (33) are provided with conical grooves (302). The reset part (43) has a cylindrical structure.

4. The high-strength steel bending springback compensation structure as described in claim 3, characterized in that: It also includes a carrier frame (6), and the driving component (5) includes a motor (51), a lead screw (52), and a guide rod (53), wherein, The carrier (6) is fixed relative to the mold head (1); The motor (51) is mounted on the carrier (6); The lead screw (52) and the adjusting member (4) are connected by a thread, and one end of the lead screw (52) is connected to the main shaft of the motor (51); The guide rod (53) is provided in multiple parts, and each of the multiple guide rods (53) has one end connected to the carrier (6) and the other end inserted into the first pressing part (41) or the second pressing part (45).

5. The high-strength steel bending springback compensation structure as described in claim 4, characterized in that: It also includes a guide component (7), which comprises a limiting plate (71), a slide rail (72), and a connecting plate (73), wherein, The carrier (6) has a C-shaped structure, and the opening of the carrier (6) faces the mold head (1). Two limiting plates (71) are provided at the opening of the carrier (6), and the limiting plates (71) abut against the top plate (31). One slide rail (72) is provided on each of the two limiting plates (71); There are two connecting plates (73). One end of each connecting plate (73) is connected to the carrier (6), and the other end of each connecting plate (73) is slidably connected to a slide rail (72).

6. The high-strength steel bending springback compensation structure as described in claim 4 or 5, characterized in that: It also includes a reset component (8), which includes a limiting frame (81) and a limiting block (82), wherein, The limiting frame (81) is disposed between the carrier (6) and the top plate (31), and the limiting frame (81) is connected to the carrier (6); The limiting frame (81) has an opening on the side facing the top plate (31); The push ring (33) is disposed within the limiting frame (81) and connected to the top plate (31) through the opening; The limiting block (82) is disposed inside the limiting frame (81) and abuts against the push ring (33). The limiting block (82) is made of elastic material.

7. The high-strength steel bending springback compensation structure as described in claim 4 or 5, characterized in that: The guide rod (53) connected to the first pressing part (41) or the second pressing part (45) is connected to the carrier (6) by a plug-in connection, and the guide rod (53) passes through the carrier (6) and is detachable.

8. A bending die, characterized in that: Including the high-strength steel bending springback compensation structure as described in any one of claims 1 to 7.

9. The bending die as described in claim 8, characterized in that: It also includes a frame plate (9), a lead screw module (10), and a bottom mold (11), among which, Multiple adjustment modules, consisting of the guide rail (2), the top pressing component (3), the adjusting component (4), and the driving component (5), are provided between the frame plate (9) and the mold head (1); The lead screw module (10) is fixed relative to the mold head (1), and the movable end of the lead screw module (10) is connected to the frame plate (9); The bottom mold (11) is positioned opposite to the mold head (1).

10. A method for applying the bending die as described in claim 8 or 9, characterized in that, Includes the following steps: S1. Calculate the springback parameters of the sheet material to be bent to determine the springback range of the sheet material to be bent; S2. The driving member (5) drives the adjusting member (4) to move, so that the adjusting member (4) pushes the top pressing member (3), and then the top pressing member (3) pushes the die head (1), causing the die head (1) to deform. S3. Place the plate to be bent in relation to the die head (1), and then move the high-strength steel bending springback compensation structure as a whole to punch and bend the plate to be bent. S4. After stamping is completed, the bent sheet is removed and the high-strength steel bending springback compensation structure is fully reset. S5. The adjusting member (4) is moved by the driving member (5) so that the adjusting member (4) positions the top pressing member (3).

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