Four-side edge-turning and sizing progressive die

Abstract

The utility model belongs to mould technical field especially relates to four sides upturning edge shaping continuous die, including upper die, lower die and feeding mechanism, the upper die is equipped with cutting punch, upturning edge fixed base, shaping punch and waste punch in proper order along the direction of conveying material, the lower die is equipped with cutting fixed base, upturning edge punch, shaping fixed base and waste fixed base in proper order along the direction of conveying material, cutting punch and cutting fixed base, upturning edge fixed base and upturning edge punch, shaping punch and shaping fixed base, waste punch and waste fixed base are set up correspondingly, the utility model discloses four sides upturning edge shaping continuous die can complete to the work procedure of the test piece blanking, four sides upturning edge, shaping, and need not to set up the insert block of moving to cope with side edge springback, but using fixed shaping punch completes the shaping of four sides upturning edge, and the convenient installation, simple structure, low cost can effectively solve the local springback, and the work efficiency is higher.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and in particular relates to a continuous mold for four-sided upward flanging and shaping. Background Technology

[0002] Bending is one of the important processes in sheet metal processing. Products formed by bending are low-cost, high-quality, and simple to manufacture, and are widely used in various industrial fields. However, the most difficult aspect to control in the bending process is springback. When the sheet metal is unloaded, it undergoes elastic deformation, which affects the shape accuracy of the sheet metal parts. Therefore, after the sheet metal parts are bent, they undergo a shaping process.

[0003] In existing technologies, shaping is typically achieved by using moving inserts to hold and shape the flanged specimen under pressure. For example, patent CN204638891U discloses a side flange shaping mold for sheet metal parts, including an upper template, an upper pressure block, a lower template, a lower mold base, and a flange insert. The upper end of the upper pressure block is connected to the upper template, and the lower template is located below the lower pressure block and connected to the lower mold base. After mold closing, the sheet metal part is pressed between the upper pressure block and the lower template. The shaping mold also includes a driven block, the upper end of which is slidably connected to the upper template, and the lower end of which is slidably connected to the flange insert. The connection surface between the driven block and the flange insert is an inclined surface. The process is as follows: The upper template drives the upper pressure block and the driven block to move downwards simultaneously. On the one hand, the upper pressure block presses down on the sheet metal part placed on the lower template. On the other hand, after the driven block hits the guide plate, it changes its vertical movement into horizontal movement. Thus, through the flanging insert, it applies both horizontal and inclined forces to the sheet metal part, thereby achieving the purpose of springback shaping of the folded edge of the sheet metal part. After holding the pressure for a certain period of time, simply move the upper template, driven block, and flanging insert upwards together. Patent CN104307987A discloses a high-precision side-forming stamping die. The stamped part is first pressed and limited by a stamping part pressing and limiting mechanism, and then the folding insert or flanging insert is driven by the wedge mechanism on the upper and lower die bases to shape the stamped part. When the folding insert or flanging insert is not working, it is located between the upper and lower die bases. When the folding insert is working, it is sent to the folding arc edge on the folding column through the wedge mechanism to press and fold the stamped part, or when the flanging insert is working, it is sent to the flanging arc edge on the folding column through the wedge mechanism to press and flang the stamped part, thus saving the internal layout space of the die. Patent CN102699148A discloses a side-forming mechanism for solving the problem of side springback in stamped parts, including a side-forming rotating wedge mechanism. The side-forming rotating wedge mechanism includes a wedge block mechanism and a side-forming rotating mechanism. During operation, the wedge block mechanism moves linearly to drive the side-forming rotating mechanism to rotate. The side-forming rotating mechanism and the die in the side-forming part work together to control the springback and achieve shaping.

[0004] All of the aforementioned patents require the use of a movable insert to control the springback of the flange. However, setting up a movable insert involves a related drive mechanism, which results in a more complex mold structure and higher manufacturing costs, especially for workpieces with multiple flanges. Utility Model Content

[0005] The purpose of this invention is to provide a continuous die for forming the upper flange on all four sides that can effectively control the springback of the flange without the need for moving inserts.

[0006] To achieve the above objectives, this utility model provides a continuous die for forming a four-sided flanging edge, including an upper die, a lower die, and a feeding mechanism. The upper die is provided with a cutting punch, a flanging fixing seat, a forming punch, and a waste punch in sequence along the feeding direction.

[0007] The lower die is provided with a cutting fixing seat, a flanging punch, a shaping fixing seat and a waste fixing seat in sequence along the material feeding direction;

[0008] The cutting punch and cutting fixing seat, the flanging fixing seat and flanging punch, the shaping punch and shaping fixing seat, and the waste punch and waste fixing seat are respectively provided.

[0009] Optionally, the flanging punch is disposed around the specimen relative to the flanging fixing seat, and the flanging punch is slidably connected to the lower die seat of the lower die via a nitrogen spring.

[0010] Optionally, a flange support seat is provided between the four flange punches, and the flange punches contact the top surface of the flange support seat through an arc groove to form a groove for accommodating the specimen.

[0011] Optionally, the shaping punches are two sets arranged opposite to each other, namely a first shaping punch and a second shaping punch;

[0012] The first shaping punch and the second shaping punch are arranged sequentially along the feeding direction. The first shaping punch and the second shaping punch are set at 90° to shape the four flanges of the specimen.

[0013] Optionally, a shaping limiting seat is provided between each group of shaping punches, and the shaping limiting seat is correspondingly provided with the shaping fixing seat;

[0014] The contact surface between the shaping limiting seat and the flange of the specimen is an inwardly inclined slope one, and the end of the shaping punch away from the upper die plate is an outwardly inclined slope two.

[0015] The inclined plane one and the inclined plane two are combined.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model's four-sided flanging forming continuous die can complete the processes of punching, flanging, and forming of the test piece. It does not require moving inserts to deal with side springback, but uses a fixed forming punch to complete the forming of the four-sided flanging. It is easy to install, has a simple structure, and is inexpensive. It can effectively solve the problem of local springback and has higher work efficiency. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the upper die of the four-sided upward-flanging and shaping continuous die of this utility model;

[0020] Figure 2 for Figure 1 A magnified view of part A in the image;

[0021] Figure 3 for Figure 2 A magnified view of part C;

[0022] Figure 4 This is a schematic diagram of the lower die of the four-sided upward flanging and shaping continuous die of this utility model;

[0023] Figure 5 for Figure 4 A magnified view of part B in the image.

[0024] In the picture:

[0025] 100 - Upper die; 101 - Upper template; 110 - Cutting punch; 120 - Flanging fixing seat; 130 - Forming punch; 1301 - Bevel two; 1302 - Bevel one; 131 - First forming punch; 132 - Second forming punch; 133 - Forming limit seat; 140 - Scrap punch;

[0026] 200 - Lower die; 201 - Lower template; 210 - Cutting fixing seat; 220 - Flanging punch; 221 - Flanging support seat; 230 - Shaping fixing seat; 240 - Scrap fixing seat;

[0027] 300-test specimen. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] The specimen 300 provided in this embodiment is as follows: Figure 5 As shown, this embodiment provides a continuous die for forming the four-sided upward-flanging edge. Figure 1-5 As shown, the assembly includes an upper die 100, a lower die 200, and a feeding mechanism. The upper die 100, along the material feeding direction, is sequentially equipped with a cutting punch 110, a flanging fixing seat 120, a shaping punch 130, and a scrap punch 140. The lower die 200, along the material feeding direction, is sequentially equipped with a cutting fixing seat 210, a flanging punch 220, a shaping fixing seat 230, and a scrap fixing seat 240. The cutting punch 110 and cutting fixing seat 210, the flanging fixing seat 120 and flanging punch 220, the shaping punch 130 and shaping fixing seat 230, and the scrap punch 140 and scrap fixing seat 240 are correspondingly arranged. The feeding mechanism uses a commercially available feeder to continuously feed the rolled material between the upper and lower dies.

[0031] Specifically, such as Figure 4-5 As shown, the flanging punch 220 is slidably connected to the lower die base 201 of the lower die 200 via a nitrogen spring. During the feeding process, the flanging punch 220 retracts to the lower die base 201 to avoid obstructing the transport of the test piece. The flanging punch 220 is located around the test piece relative to the flanging fixing seat 120 to flang the four sides of the test piece.

[0032] A flange support 221 is provided in the middle of the four flange punches 220. When the flange punches 220 rise to complete the flange of the specimen, the flange punches 220 contact the top surface of the flange support 221 through the arc groove to form a groove to accommodate the specimen.

[0033] In this example, such as Figure 1-3As shown, the forming punches 130 are arranged in two sets opposite to each other, namely the first forming punch 131 and the second forming punch 132. The first forming punch 131 and the second forming punch 132 are arranged sequentially along the feeding direction, and the first forming punch 131 and the second forming punch 132 are set at 90° to shape the four flanges of the specimen. When the specimen is fed to the first forming punch 131, the first forming punch 131 shapes the two opposite flanges of the specimen. After the two flanges are shaped, feeding continues, and the specimen is delivered to the second forming punch 132, where the second forming punch 132 shapes the other two flanges, thus completing the shaping of all four flanges.

[0034] Specifically, each group of forming punches 130 is provided with a forming limit seat 133, which is correspondingly set with the forming fixing seat 230; the contact surface between the forming limit seat 133 and the flange of the specimen is an inwardly inclined slope 1302, that is, the cross-sectional view of the forming limit seat 133 is an isosceles trapezoidal structure, and the end of the forming punch 130 away from the upper die 100 and the upper die plate 101 is an outwardly inclined slope 2 1301; the slope 1302 and the slope 2 1301 cooperate with each other. As the forming punch 130 moves downward, the end of the forming punch 130 away from the upper template 101 enters the outer side of the specimen flange. Due to the presence of the second inclined surface 1301, as the forming punch 130 continues to descend, the second inclined surface presses the specimen flange onto the first inclined surface 1302. The specimen flange is pressed and shaped between the first inclined surface 1302 and the second inclined surface 1301, reducing the impact of the flange's springback on the specimen's forming accuracy. Alternatively, a first forming punch 131 and a second forming punch 132 can be placed around the same forming limit seat 133.

[0035] The working process of this utility model's four-sided upward flanging and shaping progressive die:

[0036] The upper die 100 is installed on the punch, and the lower die 200 is placed on the worktable of the punch press. After adjusting the position, the coiled material is fed onto the lower die through the feeding mechanism. The upper die punches downwards, and the material is cut by the cooperation of the cutting punch 110 and the cutting fixing seat 210. The cutting includes punching holes and trimming edges according to the requirements of the test piece. After the cutting process is completed, the upper die opens, and the feeding mechanism continues to feed material. The newly fed material completes the cutting process, while the material that has completed the cutting process is fixed at the flange. With the cooperation of seat 120 and flanging punch 220, the upper flanging process is completed. The upper die 100 is opened again, the feeding mechanism feeds the material, and the die is closed. With the cooperation of forming punch 130 and forming fixing seat 230, the flanged specimen is shaped to reduce springback. The upper die 100 is opened again, the feeding mechanism continues to feed the material, and the die is closed. With the cooperation of scrap punch 140 and scrap fixing seat 240, the strip connected between the specimens is punched to obtain the formed specimen.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous die for forming four-sided flanges, comprising an upper die (100), a lower die (200), and a feeding mechanism, characterized in that, The upper die (100) is provided with a cutting punch (110), a flanging fixing seat (120), a shaping punch (130) and a scrap punch (140) in sequence along the material feeding direction. The lower die (200) is provided with a cutting fixing seat (210), a flanging punch (220), a shaping fixing seat (230) and a waste fixing seat (240) in sequence along the material feeding direction; The cutting punch (110) and cutting fixing seat (210), the flanging fixing seat (120) and flanging punch (220), the shaping punch (130) and shaping fixing seat (230), and the waste punch (140) and waste fixing seat (240) are respectively provided.

2. The continuous die for forming and shaping four-sided flanges according to claim 1, characterized in that, The flanging punch (220) is disposed around the specimen relative to the flanging fixing seat (120), and the flanging punch (220) is slidably connected to the lower die seat (201) of the lower die (200) by a nitrogen spring.

3. The continuous die for four-sided flanging and shaping according to claim 2, characterized in that, A flange support seat (221) is provided between the four flange punches (220). The flange punches (220) contact the top surface of the flange support seat (221) through an arc groove to form a groove for accommodating the specimen.

4. The continuous die for forming the four-sided upward flange according to claim 2, characterized in that, The shaping punches (130) are two sets arranged opposite to each other, namely the first shaping punch (131) and the second shaping punch (132). The first shaping punch (131) and the second shaping punch (132) are arranged sequentially along the material feeding direction. The first shaping punch (131) and the second shaping punch (132) are set at 90° to shape the four flanges of the specimen.

5. The continuous die for four-sided flanging and shaping according to claim 4, characterized in that, A shaping limit seat (133) is provided between each group of shaping punches (130), and the shaping limit seat (133) is correspondingly provided with the shaping fixing seat (230); The contact surface between the shaping limiting seat (133) and the flange of the specimen is an inwardly inclined slope one (1302), and the end of the shaping punch (130) away from the upper mold plate (101) of the upper mold (100) is an outwardly inclined slope two (1301). The inclined plane one (1302) and the inclined plane two (1301) are matched together.

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