A stamping tool and stamping process for a bending device

Abstract

The present invention relates to the technical field of workpiece stamping, and specifically to a stamping tool and stamping process for a bending device, wherein the stamping tool for a bending device comprises a plate, a lower die and several upper dies, wherein the several upper dies are sequentially connected to form an upper die row, wherein the upper die row is arranged above the lower die, and the plate is arranged between the upper die row and the lower die, and a fixed lifting device is connected to the upper end of the upper die row; a corner cutting structure or a clip buckle structure is arranged between the lower die and each upper die; and a bending tool is also included, wherein the forward direction of the plate is set to be forward, the bending tool is arranged in front of the lower die, and the bottom is connected to a bending lifting device. The stamping tool for a bending device of the present invention can realize the functions of corner cutting, clip buckling and bending in the same device, avoiding the problems of high cost, complicated operation, low operating efficiency, etc. caused by using different devices to realize different functions.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece stamping, and in particular to a stamping tool and a stamping process for a bending device. Background Art

[0002] ‌Bending device‌ is a kind of equipment used in metal processing, which is mainly used to plastically deform metal sheets through pressure to form specific angles and shapes. Bending devices are widely used in the manufacturing industry, especially in metal structures, shipbuilding, automobiles, aviation, construction, furniture and many other industries. Bending devices mainly include bending machines, which are mainly used to bend thin plates.

[0003] The functions of existing bending machines generally only include bending. However, in actual bending, for example, to bend the four sides of a square thin plate, the four corners of the plate need to be cut before bending, and then the sides after cutting are bent. Otherwise, the corners of the plate will be repeatedly folded, which will increase the difficulty of folding and fail to achieve the required bending effect. The existing way to cut the corners of the plate is to cut the corners by a shearing machine, and then place the plate on the bending machine for bending. The whole process is relatively complicated and time-consuming. At the same time, the bending machine cannot realize the function of buckling the bent part, and its function is single. Summary of the invention

[0004] The present invention provides a stamping tool and a stamping process for a bending device to achieve the functions of corner cutting, clipping and bending at the same time, which can realize multiple functions and accurate positioning, thereby ensuring the precise positions of corner cutting, clipping and bending.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is: to provide a stamping tool of a bending device, including a plate, and its innovative point is: including a lower die and a plurality of upper dies, the plurality of upper dies are sequentially connected to form an upper die row, the upper die row is arranged above the lower die, the plate is arranged between the upper die row and the lower die, and the upper end of the upper die row is connected to a fixed lifting device; a cutting angle structure or a buckle structure is arranged between the lower die and each upper die;

[0006] It also includes a bending tool. Assuming that the forward direction of the plate is the front, the bending tool is arranged in front of the lower die, and the bottom is connected to the bending lifting device.

[0007] Furthermore, the corner cutting structure or the clip-in structure is as follows: the lower mold is provided with a core hole corresponding to each upper mold, a clip-in core or a corner cutting core is provided in the core hole, a cylinder is provided at the bottom of the lower mold corresponding to each core hole, the telescopic end of the cylinder is placed in the core hole, the clip-in core or the corner cutting core is detachably provided at the top of the telescopic end of the cylinder, and can move up and down in the core hole with the telescopic end of the cylinder; each upper mold bottom corresponds to the clip-in core or the corner cutting core on the lower mold, and is detachably provided with a clip-in mold groove or a corner cutting mold groove, and the clip-in core or the corner cutting mold core can be moved up to the clip-in mold groove or the corner cutting mold groove by the cylinder.

[0008] Furthermore, the bottom of the upper mold is detachably provided with an upper mold bottom mold, and the upper mold bottom mold is provided with a punching buckle mold groove or a corner cutting mold groove upward corresponding to the punching buckle mold core or the corner cutting mold core on the lower mold, and the punching buckle mold core or the corner cutting mold core can be moved upward to the punching buckle mold groove or the corner cutting mold groove by a cylinder.

[0009] Furthermore, the upper die bottom die is arranged at the bottom of the upper die by bolts.

[0010] Furthermore, a cutting angle structure is provided between the two upper dies and the lower dies at the two side ends of the plate, and a buckle structure is provided between all the upper dies and the lower dies between the two upper dies with the cutting angle structure.

[0011] In order to achieve the above object, the present invention also provides a stamping process based on the above stamping tool, the innovation of which is that it specifically comprises the following steps:

[0012] (1) Installing the stamping tool: An upper die bottom die with a corner cutting die groove is installed at the bottom of the two upper dies corresponding to the two sides of the sheet to be stamped, and a corner cutting die core is installed at the top of the telescopic end of the cylinder in the die core hole of the lower die corresponding to the corner cutting die groove; an upper die bottom die with a clip-on die groove is installed at the bottom of all upper dies between the two upper dies with the corner cutting die groove, and a clip-on die core is installed at the top of the telescopic end of the cylinder in the die core hole of the lower die corresponding to the clip-on die groove;

[0013] (2) Plate edge positioning: The plate is conveyed to the rear of the upper die row and the lower die, and the position of the plate is set corresponding to the position of the two corner cutting cores. The plate is edge positioned by three positioning blocks. The plate forward direction is the Y direction. One positioning block is in the Y direction and is located behind the middle of the plate. The other two positioning blocks are in the X direction and are located on both sides of the front end of the plate. The three positioning blocks are brought close to the plate and the plate is positioned to the set position.

[0014] (3) Sheet cutting angle:

[0015] (311) After the edge of the plate is positioned, the plate is clamped up and down by two conveying rollers above and below the center of the plate, and the plate is sent between the upper die row and the lower die along the Y direction. At this time, the two corners of the front end of the plate are respectively located above the two corner cutting cores. The upper die row is moved down by the fixed lifting device to squeeze the plate, and the cylinder with the corner cutting core is started to drive the corner cutting core to move up, and the plate part above the corner cutting core is cut upward;

[0016] (312) The upper die row is moved upward by a fixed lifting device, and the two upper and lower conveying rollers at the center of the plate move the plate out of the space between the upper die row and the lower die in the opposite direction of the Y direction. The plate is clamped and rotated 180 degrees by the two upper and lower conveying rollers. The two conveying rollers again send the rotated plate between the upper die row and the lower die along the Y direction. At this time, the two corners of the front end of the plate are respectively located above the two corner cutting cores. The upper die row is moved downward by a fixed lifting device to squeeze the plate, and the cylinder with the corner cutting core is started again to drive the corner cutting core to move upward, and the plate portion above the corner cutting core is cut upward to complete the corner cutting of the plate;

[0017] (4) Plate corner positioning: After the corner cutting is completed, the upper die row is moved up by a fixed lifting device, and the plate is moved out of the space between the upper die row and the lower die in the opposite direction of the Y direction by two conveyor rollers. The three positioning blocks are brought close to the plate for secondary positioning. The two positioning blocks in the X direction are moved to the corner cutting position of the plate to position the plate.

[0018] (5) Plate buckle punching:

[0019] (511) The plate is clamped up and down by two conveying rollers above and below the center of the plate, and the plate is sent between the upper die row and the lower die along the Y direction. At this time, the front end of the plate is located above the punching buckle mold core, and the upper die row is moved down by the fixed lifting device to squeeze the plate, and the cylinder with the punching buckle mold core is started to drive the punching buckle mold core to move up, and the plate portion above the punching buckle mold core is punched;

[0020] (512) The upper mold row is moved upward by a fixed lifting device, and the plate is moved out of the space between the upper mold row and the lower mold in the reverse direction along the Y direction by two upper and lower conveying rollers at the center of the plate. The plate is clamped and rotated 90 degrees by two upper and lower conveying rollers at the center of the plate. The two conveying rollers again send the rotated plate in the Y direction between the upper mold row and the lower mold. The end of the current plate is buckled and the plate is moved out in the reverse direction by the method of step (511);

[0021] (533) Repeat steps (511) and (512) until all four edges of the plate are buckled and the plate is removed in the opposite direction of the Y direction;

[0022] (6) Sheet bending:

[0023] (611) The plate with the clipped buckle is clamped up and down by two conveyor rollers and sent to the top of the bending tool through the upper die row and the lower die along the Y direction. The upper die row is moved down and fixed by the fixed lifting device. The bending tool is driven up by the bending lifting device to bend the side of the plate upward. After the bending is completed, the bending lifting device drives the bending tool to move down, the fixed lifting device moves the upper die row up, and the two conveyor rollers move the plate out of between the upper die row and the lower die in the opposite direction of the Y direction.

[0024] (612) The plate is clamped by two conveyor rollers and rotated 90 degrees. The two conveyor rollers again pass the rotated plate between the upper die row and the lower die along the Y direction, and the side of the plate is sent to the top of the bending tool. The side of the current plate is bent and the plate is moved out in the opposite direction according to the method of step (611);

[0025] (613) Repeat steps (611) and (612) until all four sides of the plate are bent and the plate is moved out in the opposite direction of the Y direction, thus completing the stamping operation of the bending device.

[0026] Furthermore, the fixed lifting device and the bending lifting device are cylinders or hydraulic systems.

[0027] Furthermore, in the step (6), when the bending tool is driven by the bending lifting device to bend the side of the plate upward, pressure maintenance is required, and the pressure maintenance time is 30-60s.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The punching tool of a bending device of the present invention can realize the functions of corner cutting, buckling and bending in the same device, avoiding the problems of high cost, complicated operation and low operating efficiency caused by using different devices to realize different functions.

[0030] (2) A punching method for a bending device of the present invention sequentially realizes edge positioning, corner cutting, corner positioning, clipping and bending of a plate on the basis of the punching tool of the present invention, and realizes corner cutting, clipping and bending of a plate with complete functions; at the same time, the plate is edge positioned and corner positioned respectively before corner cutting and clipping, and the plate is clamped and positioned by the upper and lower conveying rollers located at the center of the plate to form diagonal positioning, thereby improving the accuracy of plate positioning and ensuring the accuracy of the corner cutting and clipping positions when the plate is sent between the upper and lower molds for corner cutting or clipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Figure 1 The present invention is a front view of an upper die of a punching tool of a bending device.

[0032] Figure 2 For the present invention Figure 1 Side view of the upper die in .

[0033] Figure 3 The present invention is a side view of the lower die of a punching tool of a bending device.

[0034] Figure 4 It is a front view of the upper mold row and the lower mold pressed together according to the present invention.

[0035] Figure 5 It is a side view of the upper mold row and the lower mold pressed together according to the present invention.

[0036] Figure 6 For the present invention Figure 5 The structural diagram of the bending tool and the bending lifting device is added.

[0037] Figure 7 It is a cross-sectional view of a buckle structure provided between the upper die and the lower die of the present invention.

[0038] Figure 8 This is a cross-sectional view of a corner cutting structure provided between the upper die and the lower die of the present invention.

[0039] Fig. 9 For the present invention Figure 8 Structural diagram of the corner cutting die core being moved upward to cut the corners of the sheet metal.

[0040] Fig.10 It is a schematic diagram of edge positioning of a plate in a stamping process of a bending device of the present invention.

[0041] Fig.11 It is a schematic diagram of angular positioning of a plate in a stamping process of a bending device of the present invention.

[0042] Fig.12 It is a schematic diagram of the upper and lower conveying rollers clamping the plate in the stamping process of a bending device of the present invention.

[0043] Fig.13 The present invention is a process flow chart of a stamping process of a bending device.

[0044] Among them, 1-plate, 2-lower die, 3-upper die, 4-upper die row, 5-fixed lifting device, 6-bending tool, 7-bending lifting device, 8-die core hole, 9-clip buckle die core, 10-cornering die core, 11-cylinder, 12-clip buckle die groove, 13-cornering die groove, 14-upper die bottom die, 15-positioning block, 16-conveying roller. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment 1: This embodiment provides a punching tool for a bending device, including a plate 1, a lower die 2 and a plurality of upper dies 3, wherein the upper die 3 and the lower die 2 have the following structures: Figure 1-3 As shown, several upper molds 3 are connected in sequence to form an upper mold row 4, the upper mold row 4 is arranged above the lower mold 2, and the plate 1 is arranged between the upper mold row 4 and the lower mold 2. Figure 4-6 As shown, a fixed lifting device 5 is connected to the upper end of the upper mold row 4; a corner cutting structure or a clipping structure is provided between the lower mold 2 and each upper mold 3. When in use, the corner cutting structure or the clipping structure is installed as needed to cut the corners or clip the plate 1.

[0047] This embodiment also includes a bending tool 6. Assuming that the advancing direction of the sheet 1 is forward, the bending tool 6 is arranged in front of the lower die 2, and the bottom is connected to a bending lifting device 7. When in use, the bending lifting device 7 drives the bending tool 6 to move upward to bend the sheet 1 upward. The advancing direction of the sheet 1 refers to the sheet 1 moving forward from one side of the lower die 2 and the upper die row 4 to between the lower die 2 and the upper die row 4 for cutting corners or buckling, or continuing to move forward to the top of the bending tool 6. The moving direction here is the advancing direction.

[0048] This embodiment can realize the functions of corner cutting, clipping and bending in the same device, avoiding the problems of high cost, complicated operation, low operating efficiency, etc. caused by using different devices to realize different functions.

[0049] Embodiment 2. Based on Embodiment 1, this embodiment has a corner cutting structure or a clip-in structure as follows: a core hole 8 is provided in the lower mold 2 corresponding to each upper mold 3, and a clip-in core 9 or a corner cutting core 10 is provided in the core hole 8; a cylinder 11 is provided at the bottom of the lower mold 2 corresponding to each core hole 8, and the telescopic end of the cylinder 11 is placed in the core hole 8. The clip-in core 9 or the corner cutting core 10 is detachably arranged at the top of the telescopic end of the cylinder 11, and can move up and down in the core hole 8 with the telescopic end of the cylinder 11; the bottom of each upper mold 3 corresponds to the clip-in core 9 or the corner cutting core 10 on the lower mold 2, and a clip-in core 9 or the corner cutting core 10 can be detachably provided with a clip-in groove 12 or a corner cutting groove 13, and the clip-in core 9 or the corner cutting core 10 can be moved up to the clip-in groove 12 or the corner cutting groove 13 by the cylinder 11.

[0050] like Figure 7-9 As shown, Figure 7 The buckle structure is set between the upper and lower molds, which is used to buckle the side of the plate 1. Figure 8 The corner cutting structure is arranged between the upper and lower molds, and is used to cut the corners of the plate 1. Fig. 9 for Figure 8 The cutting structure in the figure shows the state of plate 1 after cutting.

[0051] The shapes of the corner cutting mold core 10 and the clip-in buckle mold core 9 in this embodiment are not fixed. The corner cutting mold core 10 and the clip-in buckle mold core 9 can be set to the required shape according to actual needs. The clip-in buckle mold groove 12 and the corner cutting mold groove 13 can be adapted to the clip-in buckle mold core 9 and the corner cutting mold core 10 respectively.

[0052] In this embodiment, the clip-on mold core 9 or the corner cutting mold core 10 can be detachably arranged on the telescopic end of the cylinder 11 in a specific manner that can be sleeved, screwed or other detachable manners.

[0053] Embodiment 3, the upper mold 3 of this embodiment has a detachable upper mold bottom mold 14 at the bottom, and the upper mold bottom mold 14 is provided with a punching buckle mold groove 12 or a corner cutting mold groove 13 upward corresponding to the punching buckle mold core 9 or the corner cutting mold core 10 on the lower mold 2, and the punching buckle mold core or the corner cutting mold core can be moved upward to the punching buckle mold groove or the corner cutting mold groove by a cylinder.

[0054] Preferably, the upper die bottom die 14 is arranged at the bottom of the upper die 3 by bolts.

[0055] The rest is the same as Example 2.

[0056] The present embodiment is provided with an upper mold bottom mold 14, and the upper mold bottom mold 14 provided with a corner cutting mold groove 13 or a clip buckle mold groove 12 can be installed at the bottom of the upper mold as needed to adapt to the corner cutting mold core 10 or the clip buckle mold core 9 provided in the mold core hole 8 of the lower mold 2, which is easy to disassemble and has high flexibility in use.

[0057] Embodiment 4. In this embodiment, a cutting angle structure is set between the two upper molds 3 and the lower mold 2 at the two side ends of the plate 1, and a buckle structure is set between all the upper molds 3 and the lower molds 2 between the two upper molds 3 with the cutting angle structure.

[0058] The specific installation position of the clip buckle structure or the corner cutting structure in this embodiment is as follows: according to the plate 1 to be processed and the width of the side of the plate 1 to be corner cut, a corner cutting structure is set between the upper die 3 and the lower die 2 corresponding to the two corners of the side of the plate 1, so as to cut the two ends of the side of the plate 1, and facilitate the subsequent bending of the side of the plate 1. A clip buckle structure is set between the upper die 3 and the lower die 2 corresponding to the remaining positions of the side of the plate 1 except the two corners, and the side of the plate 1 is clipped. Specifically, the position of the clip buckle does not require a clip buckle structure to be set between each adjacent upper die 3 and lower die 2, and the clip buckle structure can be selected and installed according to actual needs.

[0059] Embodiment 5, this embodiment is a stamping process based on the stamping tool in any one of embodiments 1-4, the process is as follows Fig.13 As shown, the specific steps include:

[0060] (1) Installing the stamping tool: An upper die bottom die 14 provided with a corner cutting die groove 13 is installed at the bottom of the two upper dies 3 corresponding to the two sides of the sheet 1 to be stamped, and a corner cutting die core 10 is installed at the top of the telescopic end of the cylinder 11 in the die core hole 8 of the lower die 2 corresponding to the corner cutting die groove 13; an upper die bottom die 14 provided with a clip-in die groove 12 is installed at the bottom of all upper dies 3 between the two upper dies 3 provided with the corner cutting die groove 13, and a clip-in die core 9 is installed at the top of the telescopic end of the cylinder 11 in the die core hole 8 of the lower die 2 corresponding to the clip-in die groove 12.

[0061] (2) Plate edge positioning: The plate 1 is conveyed to the rear of the upper die row 4 and the lower die 2, and the position of the plate 1 is set corresponding to the position of the two corner cutting cores 10. The plate 1 is edge positioned by three positioning blocks 15. The forward direction of the plate 1 is the Y direction. One of the positioning blocks 15 is in the Y direction and is located behind the middle of the plate 1. The other two positioning blocks 15 are in the X direction and are located on both sides of the front end of the plate 1. The three positioning blocks 15 are brought close to the plate 1 and the plate 1 is positioned to the set position, such as Fig.10 As shown, in order to ensure that the sheet 1 is fed between the upper die row 4 and the lower die 2, the corners of the sheet 1 are correspondingly provided with the positions of the corner cutting cores 10.

[0062] (3) Sheet cutting angle:

[0063] (311) After the edge of the plate 1 is positioned, the plate 1 is clamped up and down by two conveyor rollers 16 above and below the center of the plate 1. Fig.12As shown, the sheet 1 is sent between the upper die row 4 and the lower die 2 along the Y direction. At this time, the two corners of the front end of the sheet 1 are respectively located above the two corner cutting mold cores 10. The upper die row 4 is moved downward by the fixed lifting device 5 to extrude the sheet 1, and the cylinder 11 provided with the corner cutting mold core 10 is started to drive the corner cutting mold core 10 to move upward, and the portion of the sheet 1 above the corner cutting mold core 10 is upwardly cornered;

[0064] (312) The upper mold row 4 is moved upward by the fixed lifting device 5, and the two upper and lower conveying rollers 16 at the center of the plate 1 move the plate 1 out of the space between the upper mold row 4 and the lower mold 2 in the opposite direction of the Y direction. The plate 1 is clamped and rotated 180 degrees by the two upper and lower conveying rollers 16 of the plate 1. The two conveying rollers 16 again send the rotated plate 1 between the upper mold row 4 and the lower mold 2 along the Y direction. At this time, the two corners of the front end of the plate 1 are respectively located above the two corner cutting cores 10. The upper mold row 4 is moved downward by the fixed lifting device 5 to squeeze the plate 1, and the cylinder 11 provided with the corner cutting core 10 is started again to drive the corner cutting core 10 to move upward, and the plate 1 above the corner cutting core 10 is cut upward to complete the corner cutting of the plate 1;

[0065] (4) Plate corner positioning: After the corner cutting is completed, the upper die row 4 is moved upward by the fixed lifting device 5, and the plate is moved out of the space between the upper die row 4 and the lower die 2 in the opposite direction of the Y direction by the two conveying rollers 16. The three positioning blocks 15 are moved close to the plate 1 to perform secondary positioning of the plate 1. The two positioning blocks 15 located in the X direction are moved to the corner cutting position of the plate 1 to position the plate 1, such as Fig.11 shown.

[0066] (5) Plate buckle punching:

[0067] (511) The plate 1 is clamped up and down by two upper and lower conveying rollers 16 at the center of the plate 1, and the plate 1 is sent between the upper die row 4 and the lower die 2 along the Y direction. At this time, the front end of the plate 1 is located above the punching mold core 9, and the upper die row 4 is moved down by the fixed lifting device 5 to squeeze the plate 1, and the cylinder 11 provided with the punching mold core 9 is started to drive the punching mold core 9 to move up, and the plate 1 above the punching mold core 9 is punched;

[0068] (512) The upper mold row 4 is moved upward by the fixed lifting device 5, and the plate 1 is moved out of the space between the upper mold row 4 and the lower mold 2 in the reverse direction along the Y direction by the two upper and lower conveying rollers 16 at the center of the plate 1. The plate 1 is clamped and rotated 90 degrees by the two upper and lower conveying rollers 16 at the center of the plate 1. The two conveying rollers 16 again send the rotated plate 1 in the Y direction between the upper mold row 4 and the lower mold 2. The end of the current plate 1 is buckled and the plate 1 is moved out in the reverse direction by the method of step (511);

[0069] (533) Repeat steps (511) and (512) until all four edges of the plate 1 are buckled and the plate 1 is removed in the opposite direction of the Y direction;

[0070] (6) Sheet bending:

[0071] (611) The plate 1 after the clipping is completed is clamped up and down by two conveying rollers 16, and the side of the plate 1 is sent to the top of the bending tool 6 through the upper die row 4 and the lower die 2 along the Y direction, and the upper die row 4 is moved down and fixed to the plate 1 by the fixed lifting device 5, and the bending tool 6 is driven to move up by the bending lifting device 7 to bend the side of the plate 1 upward. After the bending is completed, the bending lifting device 7 drives the bending tool 6 to move down, and the fixed lifting device 5 moves the upper die row 4 up. The two conveying rollers 16 move the plate 1 out of between the upper die row 4 and the lower die 2 in the opposite direction of the Y direction;

[0072] (612) The sheet 1 is clamped by two conveying rollers 16 and rotated 90 degrees. The two conveying rollers 16 again pass the rotated sheet 1 between the upper die row 4 and the lower die 2 along the Y direction, and the side of the sheet 1 is sent to the top of the bending tool 6. The side of the current sheet 1 is bent and the sheet 1 is moved out in the opposite direction in the manner of step (611);

[0073] (613) Repeat steps (611) and (612) until all four sides of the plate 1 are bent and the plate 1 is moved out in the opposite direction of the Y direction, thus completing the stamping operation of the bending device.

[0074] The stamping process of this embodiment realizes edge positioning, corner cutting, corner positioning, clipping and bending of the plate 1 in sequence, and realizes corner cutting, clipping and bending of the plate 1 with complete functions; at the same time, the plate 1 is edge positioned and corner positioned respectively before corner cutting and clipping, and the plate 1 is clamped and positioned by the upper and lower conveying rollers 16 located in the center of the plate 1 to form diagonal positioning with an error within 0.1mm, thereby improving the positioning accuracy of the plate 1 and ensuring the accuracy of the corner cutting and clipping positions when it is sent between the upper and lower molds for corner cutting or clipping.

[0075] Embodiment 6: the fixed lifting device 5 and the bending lifting device 7 of this embodiment are cylinders or hydraulic systems.

[0076] The rest is the same as Example 5.

[0077] In actual use, the present embodiment determines the bending angle and the pressure required for bending according to actual needs, and the plate 1 is bent by applying the required pressure to the bending lifting device 7 .

[0078] Embodiment 7, in step (6) of embodiment 5, when the bending tool 6 is driven by the bending lifting device 7 to bend the side of the plate 1 upward, pressure holding is required, and the pressure holding time is 30-60s. The pressure holding setting can ensure the accuracy of the bending angle and avoid springback of the plate after bending.

[0079] The rest is the same as Example 5.

[0080] During actual bending, the bending can be repeated according to actual needs, that is, the bending lifting device 7 is repeatedly lifted and lowered to drive the bending tool 6 to repeatedly bend the plate 1.

[0081] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A stamping process for a bending device, characterized in that: The stamping process is realized by a stamping tool, which includes a plate, a lower die and several upper dies, wherein the upper dies are sequentially connected to form an upper die row, wherein the upper die row is arranged above the lower die, the plate is arranged between the upper die row and the lower die, and a fixed lifting device is connected to the upper end of the upper die row; a cutting angle structure or a buckle structure is arranged between the lower die and each upper die; It also includes a bending tool. Assuming that the forward direction of the plate is the front, the bending tool is arranged in front of the lower die, and the bottom is connected to the bending lifting device; The corner cutting structure or the clip-in buckle structure is as follows: the lower die is provided with a core hole corresponding to each upper die, a clip-in buckle core or a corner cutting core is provided in the core hole, a cylinder is provided at the bottom of the lower die corresponding to each core hole, the telescopic end of the cylinder is placed in the core hole, the clip-in buckle core or the corner cutting core is detachably provided at the top of the telescopic end of the cylinder, and can move up and down in the core hole with the telescopic end of the cylinder; the clip-in buckle core or the corner cutting core on the bottom of each upper die corresponding to the lower die is detachably provided with a clip-in buckle groove or a corner cutting groove, and the clip-in buckle core or the corner cutting core can be moved up to the clip-in buckle groove or the corner cutting groove by the cylinder; The upper mold bottom is detachably provided with an upper mold bottom mold, and the upper mold bottom mold is provided with a punching buckle mold groove or a corner cutting mold groove upwardly corresponding to the punching buckle mold core or the corner cutting mold core on the lower mold, and the punching buckle mold core or the corner cutting mold core can be moved upward to the punching buckle mold groove or the corner cutting mold groove by a cylinder; The upper die bottom die is arranged at the bottom of the upper die by bolts; A cutting angle structure is provided between the two upper dies and the lower dies at the two side ends of the plate, and a buckle structure is provided between all the upper dies and the lower dies between the two upper dies with the cutting angle structure; The stamping process specifically includes the following steps: (1) Installing the stamping tool: An upper die bottom die with a corner cutting die groove is installed at the bottom of the two upper dies corresponding to the two sides of the sheet to be stamped, and a corner cutting die core is installed at the top of the telescopic end of the cylinder in the die core hole of the lower die corresponding to the corner cutting die groove; an upper die bottom die with a clip-on die groove is installed at the bottom of all upper dies between the two upper dies with the corner cutting die groove, and a clip-on die core is installed at the top of the telescopic end of the cylinder in the die core hole of the lower die corresponding to the clip-on die groove; (2) Plate edge positioning: The plate is conveyed to the rear of the upper die row and the lower die, and the position of the plate is set corresponding to the position of the two corner cutting cores. The plate is edge positioned by three positioning blocks. The plate forward direction is the Y direction. One positioning block is in the Y direction and is located behind the middle of the plate. The other two positioning blocks are in the X direction and are located on both sides of the front end of the plate. The three positioning blocks are brought close to the plate and the plate is positioned to the set position. (3) Sheet cutting angle: (311) After the edge of the plate is positioned, the plate is clamped up and down by two conveying rollers above and below the center of the plate, and the plate is sent between the upper die row and the lower die along the Y direction. At this time, the two corners of the front end of the plate are respectively located above the two corner cutting cores. The upper die row is moved down by the fixed lifting device to squeeze the plate, and the cylinder with the corner cutting core is started to drive the corner cutting core to move up, and the plate part above the corner cutting core is cut upward; (312) The upper die row is moved upward by a fixed lifting device, and the two upper and lower conveying rollers at the center of the plate move the plate out of the space between the upper die row and the lower die in the opposite direction of the Y direction. The plate is clamped and rotated 180 degrees by the two upper and lower conveying rollers. The two conveying rollers again send the rotated plate between the upper die row and the lower die along the Y direction. At this time, the two corners of the front end of the plate are respectively located above the two corner cutting cores. The upper die row is moved downward by a fixed lifting device to squeeze the plate, and the cylinder with the corner cutting core is started again to drive the corner cutting core to move upward, and the plate portion above the corner cutting core is cut upward to complete the corner cutting of the plate; (4) Plate corner positioning: After the corner cutting is completed, the upper die row is moved up by a fixed lifting device, and the plate is moved out of the space between the upper die row and the lower die in the opposite direction of the Y direction by two conveyor rollers. The three positioning blocks are brought close to the plate for secondary positioning. The two positioning blocks in the X direction are moved to the corner cutting position of the plate to position the plate. (5) Plate buckle punching: (511) The plate is clamped up and down by two conveying rollers above and below the center of the plate, and the plate is sent between the upper die row and the lower die along the Y direction. At this time, the front end of the plate is located above the punching buckle mold core, and the upper die row is moved down by the fixed lifting device to squeeze the plate, and the cylinder with the punching buckle mold core is started to drive the punching buckle mold core to move up, and the plate portion above the punching buckle mold core is punched; (512) The upper mold row is moved upward by a fixed lifting device, and the plate is moved out of the space between the upper mold row and the lower mold in the reverse direction along the Y direction by two upper and lower conveying rollers at the center of the plate. The plate is clamped and rotated 90 degrees by two upper and lower conveying rollers at the center of the plate. The two conveying rollers again send the rotated plate in the Y direction between the upper mold row and the lower mold. The end of the current plate is buckled and the plate is moved out in the reverse direction by the method of step (511); (533) Repeat steps (511) and (512) until all four edges of the plate are buckled and the plate is removed in the opposite direction of the Y direction; (6) Sheet bending: (611) The plate with the clipped buckle is clamped up and down by two conveyor rollers and sent to the top of the bending tool through the upper die row and the lower die along the Y direction. The upper die row is moved down and fixed by the fixed lifting device. The bending tool is driven up by the bending lifting device to bend the side of the plate upward. After the bending is completed, the bending lifting device drives the bending tool to move down, the fixed lifting device moves the upper die row up, and the two conveyor rollers move the plate out of between the upper die row and the lower die in the opposite direction of the Y direction. (612) The plate is clamped by two conveyor rollers and rotated 90 degrees. The two conveyor rollers again pass the rotated plate between the upper die row and the lower die along the Y direction, and the side of the plate is sent to the top of the bending tool. The side of the current plate is bent and the plate is moved out in the opposite direction according to the method of step (611); (613) Repeat steps (611) and (612) until all four sides of the plate are bent and the plate is moved out in the opposite direction of the Y direction, thus completing the stamping operation of the bending device.

2. The stamping process of a bending device according to claim 1, characterized in that: The fixed lifting device and the bending lifting device are cylinders or hydraulic systems.

3. The stamping process of a bending device according to claim 1, characterized in that: In step (6), when the bending tool is driven by the bending lifting device to bend the side of the plate upward, pressure maintenance is required, and the pressure maintenance time is 30-60s.

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