Side body outer plate small-included-angle one-time side flanging forming die

Abstract

The invention discloses a small-included-angle one-time side flanging forming die for a side wall outer plate. The side flanging die comprises an upper die base, a lower die base and a fixed male die arranged between the upper die base and the lower die base, the fixed male die is fixed to the lower die base, and a rigid driving type side flanging male die wedge sliding block mechanism and an up-down double-driving type side flanging female die wedge mechanism which are matched with each other are arranged between the upper die base and the lower die base. The method is used for one-time forming of the small-included-angle flanging of the automobile side wall outer plate with the sharp modeling design in the tail lamp area, and the quality problems that the small-included-angle flanging is wrinkled, the outline is uneven, and the flanging fillet size is large are synchronously solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy automobile molds, and in particular relates to a small-angle one-time side flanging forming mold for a side outer panel. Background Art

[0002] The characteristic lines of a car's exterior are undoubtedly a crucial part of the car design process, shaping the main form of the car. Exquisite and elegant contour lines can not only fully demonstrate the style and model positioning of the car, but also enhance the recognition of the car brand. With the improvement of living standards, customers have a special liking for the unique car exterior that is full of power and sportiness. One of the key techniques to create this unique exterior is the sharp treatment of the waistline on the side of the car body. This sharp waistline design not only makes the whole car shape more three-dimensional and rich in layers, but also brings a strong visual shock to consumers.

[0003] Entering the era of new energy vehicles, the sharp design of the waistline of the side of the car body has become a trend and fashion. The so-called sharp design is to use a small radius fillet when designing the characteristic edge of the car body, generally R5 and below. This small radius fillet design has high requirements for the design and manufacturing of the mold. Especially for the sharp features of the rear of the side outer panel of the car, when the profile angles on both sides of the characteristic edge are small, and the flange flange is a negative angle structure, the quality of the flange forming is usually difficult to guarantee, and it is easy to produce defects such as wrinkling of the flange, uneven contours, and different sizes of flange fillets. In order to solve these problems, the traditional approach is to use multiple processes in batches, that is, first use a set of molds for pre-flange forming, and then use another set of molds for side flanging forming. Although this solution can ultimately guarantee the forming quality of the small angle flange in the rear area of ​​the side outer panel, it lengthens the processing process, increases the manufacturing cost, and has poor economic efficiency.

[0004] For example, patent 202022458617.1 provides a pressing and flanging die for the taillights of the side outer panel of a car. By using the double-active structure of the upper and lower pressing plates, the flanging flange at the taillight of the side outer panel is always in a clamping state under double-sided pressure during the entire deformation process, so as to suppress the material instability tendency of the flanging flange at the taillight of the side outer panel, thereby solving the problem of flanging wrinkling at the taillight of the side outer panel of the car. Although the problem of flanging wrinkling at the taillight of the side outer panel of the car can be solved, this structure is only applicable to flanging of straight segments, and is not applicable to flanging in corner areas. In addition, this technical solution is relatively easy to implement for vertical flanging, but when the flanging flange at the taillight of the side outer panel is a negative angle structure and side flanging forming is required, this technical solution is no longer applicable.

[0005] Another example is patent 202311764500.8, which provides a flanging method and flanging mold for the taillight area of ​​the vehicle's side outer panel, and designs a convex and concave flanging forming edge that matches the shape of the flanging flange, so as to ensure the flatness of the flanging radii in the taillight area of ​​the vehicle's side outer panel. Although it can solve the problem of different sizes of flanging radii in the taillight area of ​​the vehicle's side outer panel, it needs to match the wavy flanging flange structure, that is, it is necessary to cut the flanging flange of the vehicle's side outer panel into a process notch, and the scope of application is also relatively limited. At the same time, this invention method and flanging mold can only be applied to flanging of straight line segments, and is not applicable to flanging of corner areas. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology and provide a small angle one-time side flanging forming die for the side outer panel. It is used for the one-time forming of small angle flanging of the side outer panel of the automobile with sharp shape design in the taillight area, and simultaneously solves the quality problems such as wrinkling of small angle flanging, uneven contour, and size of flanging radius. While ensuring the quality, the flanging forming process is shortened and the mold manufacturing cost is saved.

[0007] The technical solution adopted by the present invention is: a small-angle one-time side flanging forming die for a side outer panel, comprising an upper die base, a lower die base and a fixed punch arranged between the upper die base and the lower die base, wherein the fixed punch is fixed on the lower die base, and a rigidly driven side flanging punch wedge slider mechanism and an upper and lower double-driven side flanging die wedge mechanism that cooperate with each other are arranged between the upper die base and the lower die base.

[0008] A further preferred structure is that the four corner areas of the lower mold base are fixed with a first guide plate and a guide column, the first guide plate forms a sliding fit relationship with the main body guide surface of the four corner areas of the upper mold base, and the four corner areas of the upper mold base are fixed with a guide sleeve, and the guide sleeve forms a sliding fit relationship with the guide column.

[0009] A further preferred structure is that the rigid-driven side flanging punch oblique wedge slider mechanism includes a side flanging punch slider, a first angle guide plate, an oblique wedge lower drive block, a movable punch, a second guide plate, an oblique wedge side guide plate, and a first nitrogen spring, the first angle guide plate being obliquely fixed to the top side of the side flanging punch slider, the oblique wedge lower drive block being fixed in the middle of the side flanging punch slider, and the movable punch being fixed to one side of the side flanging punch slider, the top body guide surface of the movable punch and the bottom body guide surface of the fixed punch form a sliding fit relationship, the movable punch contacts the lower surface of the part, the oblique wedge side guide plate is fixed on the side flanging punch slider and arranged on two opposite sides of the side flanging punch slider, the oblique wedge side guide plate forms a sliding fit relationship with the lower die seat, the second guide plate is fixed on the side flanging punch slider and forms a sliding fit relationship with the lower die seat, the first nitrogen spring is fixed on the side flanging punch slider, and the piston rod of the first nitrogen spring contacts the upper support surface of the lower die seat.

[0010] A further preferred structure also includes a buffering polyurethane, which is fixed on the side flanging punch slider and arranged on the other two opposite sides of the side flanging punch slider.

[0011] A further preferred structure, the upper and lower dual-drive side flanging die inclined wedge mechanism includes an inclined wedge upper drive block, a side flanging inclined wedge slider, a fourth guide plate, a fifth guide plate, an anti-lateral force support seat, a flanging die insert, and a third nitrogen spring, the flanging inclined wedge slider and the inclined wedge upper drive block form a sliding fit relationship, the inclined wedge upper drive block is fixed on the upper die seat, the flanging die insert is fixed on the side flanging inclined wedge slider, the fourth guide plate is fixed on the flanging die insert and forms a sliding fit relationship with the guide surface of the lower die seat body, the fifth guide plate is fixed on the flanging die insert and always forms a sliding fit relationship with the anti-lateral force support seat, the anti-lateral force support seat is fixed on the upper die seat, and the third nitrogen spring is fixed on the flanging die insert.

[0012] A further preferred structure is that a second angle guide plate is obliquely fixed to the top side of the oblique wedge drive seat, and the oblique wedge drive seat is fixed on the upper die seat, and the first angle guide plate and the second angle guide plate form a sliding fit relationship. Driven by the upper die seat, the relative sliding movement between the first angle guide plate and the second angle guide plate drives the side flanging punch slider to move horizontally, and the side flanging oblique wedge slider forms a sliding fit relationship with the oblique wedge lower driving block, and the fourth guide plate engages with the main body guide surface in the corresponding area of ​​the side flanging punch slider.

[0013] In a further preferred structure, the flanging die insert is provided with a flanging forming cutting edge for contacting the upper surface of the part.

[0014] In a further preferred structure, a third guide plate is fixed on the inclined wedge drive seat and meshes with the main body guide surface of the corresponding area of ​​the side flanging punch slider to prevent lateral force.

[0015] A further preferred structure is that a wedge pressure plate is fixed on the lower die seat, which is used to limit the vertical direction of the rigidly driven side flanging punch wedge slider mechanism, and the bottom guide sliding surface of the wedge pressure plate and the top guide sliding surface of the wedge side guide plate always form a sliding fit relationship.

[0016] A further preferred structure is that a second nitrogen spring is fixed on the upper die base, the second nitrogen spring is connected to the main pressure plate to provide a pressure source therefor, the main pressure plate is embedded in the upper die base and contacts the upper surface of the part, an insert pressure plate is fixed on the main pressure plate, and the third nitrogen spring piston rod is pressed against the insert pressure plate.

[0017] The present invention realizes one-time stamping of the negative angle flange of the automobile side outer panel with sharp features in the taillight area and the sharp edge being a small angle shape, and can effectively solve the quality defects of the sharp small angle negative angle flange such as wrinkling, uneven contour and different flange radius.

[0018] The present invention designs a side flanging female die wedge mechanism with upper and lower dual drives, and integrates it into a rigidly driven side flanging male die wedge mechanism, supplemented by a guide structure for offsetting lateral forces, so as to achieve a one-time stamping forming of a negative angle flanging of a side outer panel of an automobile with a sharp feature in the taillight area and a sharp edge with a small angle shape.

[0019] The present invention uses a small-angle one-time side flanging forming die for a side outer panel of the present invention, which can complete the one-time stamping forming of the negative-angle flanging flange under the sharp shape of the taillight area in one process, thereby reducing one pair of automobile side outer panel pre-flanging forming dies. The cost of one pair of automobile side outer panel flanging forming dies is about 2 million yuan. The application of the technical solution and the side flanging forming die provided by the present invention can save 4 million yuan in stamping die costs for each vehicle model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an axial view of a small-angle one-time side flanging forming die for a side enclosure outer panel of the present invention;

[0021] Figure 2 A top view of a small-angle one-step side flanging forming die for a side outer panel of the present invention;

[0022] Figure 3 It is an axial side view of an upper die seat of a small-angle one-step side flanging forming die for a side enclosure outer panel of the present invention;

[0023] Figure 4 A bottom view of an upper die base of a small-angle one-step side flanging forming die for a side enclosure outer panel of the present invention;

[0024] Figure 5 It is an axial side view of a lower die seat of a small-angle one-step side flanging forming die for a side enclosure outer panel of the present invention;

[0025] Figure 6 It is a top view of a lower die base of a small-angle one-step side flanging forming die for a side enclosure outer panel of the present invention;

[0026] Figure 7 for Figure 2 Sectional view at AA;

[0027] Figure 8 for Figure 2 Sectional view at the middle BB;

[0028] Fig. 9 for Figure 2 Cross-section at mid-CC;

[0029] Fig.10 for Figure 2 Sectional view at DD;

[0030] Fig.11 It is the axial view of the rigid driven side flanging punch wedge slider mechanism;

[0031] Fig.12 It is the axial view of the upper and lower double-driven side flanging die wedge mechanism;

[0032] Fig.13 It is a top view of the upper and lower double-driven side flanging die wedge mechanism;

[0033] Fig.14 It is a front view of the upper and lower double-driven side flanging die wedge mechanism;

[0034] Fig.15 for Fig.13 Sectional view at EE;

[0035] Fig.16 for Fig.13 Cross-section at FF;

[0036] Fig.17 It is a left view of a side outer panel of a car with a small angle feature at the rear;

[0037] Fig.18 It is an enlarged view of the rear part of a side outer panel of a car having a small angle feature at the rear part;

[0038] Fig.19 for Fig.17 Cross-section at GG in the middle;

[0039] Fig. 20 for Fig.17 Sectional view at HH;

[0040] Fig.21 It is an axonometric view of a side outer panel of a vehicle having a small angle feature at the rear.

[0041] In the figure, 101-lower die seat, 102-fixed punch, 103-guide column, 104-first angle guide plate, 105-side flanging punch slider, 106-first guide plate, 107-bevel lower drive block, 108-bevel pressure plate, 109-movable punch, 110-second guide plate, 111-first nitrogen spring, 112-buffer polyurethane, 113-bevel side guide plate, 201-upper die seat, 202 -guide sleeve, 203-bevel upper driving block, 204-side flanging bevel slider, 205-second angle guide plate, 206-bevel driving seat, 207-third guide plate, 208-fourth guide plate, 209-insert pressing plate, 210-main pressing plate, 211-second nitrogen spring, 212-anti-lateral force support seat, 213-fifth guide plate, 214-flanging die insert, 215-third nitrogen spring. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0043] like Fig.17 , 18 As shown, the automobile side outer panel used in the mold of the present invention has a characteristic edge line fillet radius of R5 at the rear end, and the angle between the profiles on both sides of the characteristic edge line is 80°; Fig.19 , 20 As shown in 21, the automobile side panel outer panel used by the mold of the present invention has a negative angle structure of the flange.

[0044] like Figure 1 , Figure 2 As shown, a small-angle one-time side flanging forming die for a side outer panel of the present invention comprises an upper die base 201 , a lower die base 101 , and a fixed punch 102 and a movable punch 109 arranged between the upper die base 201 and the lower die base 101 .

[0045] like Figure 3 , Figure 5 As shown, the fixed punch 102 is fixed to the lower die base 101 by bolt locking, flat key pre-positioning and pin pin fine positioning, the first guide plate 106 is fixed to the four corners of the lower die base 101 by bolt locking, and forms a sliding fit relationship with the body guide surface of the four corners of the upper die base 201 during the working process. The guide column 103 is fixed to the four corners of the lower die base 101 by interference fit, and the guide sleeve 202 is fixed to the four corners of the upper die base 201 by bolt locking, and forms a sliding fit relationship with the guide column 103 during the working process.

[0046] like Fig. 9 As shown, the first angle guide plate 104 and the second angle guide plate 205 are respectively fixed to the side flanging punch slider 105 and the inclined wedge drive seat 206 by bolt locking, and the two form a sliding fit relationship during the working process. Driven by the upper die seat 201, the first angle guide plate 104 drives the side flanging punch slider 105 to move horizontally through relative sliding movement with the second angle guide plate 205, and the inclined wedge drive seat 206 is fixed on the upper die seat 201.

[0047] like Figure 3 As shown, the third guide plate 207 fixed on the inclined wedge driving seat 206 is engaged with the main body guide surface of the corresponding area of ​​the side flanging punch slider 105.

[0048] like Figure 6 , Figure 7 , 10 As shown, the lower driving block 107 of the inclined wedge is fixed on the side flanging punch slider 105 by bolt locking and pin positioning, and forms a sliding fit relationship with the side flanging inclined wedge slider 204 during operation; the movable punch 109 is fixed on the side flanging punch slider 105 by bolt locking and pin positioning, and its top body guide surface forms a sliding fit relationship with the bottom body guide surface of the fixed punch 102 during operation, and the movable punch 109 contacts the lower surface of the part; Fig.11 As shown, the side guide plates 113 of the inclined wedge are fixed to the side flanging punch slider 105 by bolts, arranged on both sides of the side flanging punch slider 105, and always form a sliding fit relationship with the lower die seat 101; the buffer polyurethane 112 is fixed to the side flanging punch slider 105 by bolts, and its function is to reduce the impact force of the side flanging punch slider 105 on the fixed punch 102 when the side flanging punch slider 105 is formed and returns to the initial state. The second guide plate 110 is fixed to the side flanging punch slider 105 to form a sliding fit relationship with the lower die seat 101, and the first nitrogen spring 111 is fixed to the side flanging punch slider 105, and the piston rod of the first nitrogen spring 111 contacts the upper support surface of the lower die seat 101. The side flanging punch slider 105, the first angle guide plate 104, the inclined wedge lower driving block 107, the movable punch 109, the second guide plate 110, the inclined wedge side guide plate 113, the buffering polyurethane 112, and the first nitrogen spring 111 together constitute a rigidly driven side flanging punch inclined wedge slider mechanism.

[0049] like Figure 3 , Figure 7 , Figure 8 , Fig.12As shown, the side flanging inclined wedge slider 204 is suspended on the upper die base 201 and always forms a sliding fit relationship with the inclined wedge upper driving block 203; the inclined wedge upper driving block 203 is fixed to the upper die base 201 by bolt locking, flat key pre-positioning and pin precision positioning; the flanging die insert 214 is fixed to the side flanging inclined wedge slider 204 by bolt locking and pin positioning, and the fourth guide plate 208 is bolted to the flanging die insert 214 and forms a sliding fit relationship with the guide surface of the lower die base 101 body during operation; as shown Figure 4 As shown, the fifth guide plate 213 is fixed to the flanging die insert 214 by bolt locking, and always forms a sliding fit relationship with the lateral force protection support seat 212; the lateral force protection support seat 212 is fixed to the upper die seat 201 by bolt locking and pin positioning; Figure 13 to Figure 16 As shown, the third nitrogen spring 215 is fixed to the flanging die insert 214 by means of a clamping plate and bolts; the upper driving block 203 of the slanted wedge, the side flanging slanted wedge slider 204, the fourth guide plate 208, the fifth guide plate 213, the anti-lateral force support seat 212, the flanging die insert 214, and the third nitrogen spring 215 together constitute an upper and lower double-driven side flanging die slanted wedge mechanism. This upper and lower double-driven side flanging die slanted wedge mechanism does not require additional design of slanted wedge side guide plates and slanted wedge pressure plates to limit and prevent the slanted wedge slider from loosening, requires a smaller layout space, and has a more stable and reliable structure.

[0050] The second nitrogen spring 211 is fixed to the upper die base 201 by means of a clamping plate and bolts, providing a pressure source for the main pressing plate 210; the insert pressing plate 209 is fixed to the main pressing plate 210 by means of bolts and pins; in order to ensure the strength of the pressing plate for the sharp-shaped small-angle side flange in the rear area of ​​the automobile side outer panel, the pressing plate is split into inserts, that is, the main pressing plate 210 is made of ordinary ductile iron, while the insert pressing plate 209 is made of forged steel with higher strength.

[0051] The wedge pressing plate 108 is fixed to the lower die seat 101 by bolts, and is used to limit the vertical direction of the wedge sliding block mechanism of the rigid drive side flanging punch. The bottom guide sliding surface of the wedge pressing plate 108 and the top guide sliding surface of the wedge side guide plate 113 always form a sliding fit relationship.

[0052] Working process of the present invention:

[0053] The upper mold base 201 and other components fixed thereon continue to move downward to 200 mm from the bottom dead center, and the body guide surfaces of the four corners of the upper mold base 201 begin to engage with the first guide plates 106 fixed to the four corners of the lower mold base 101, and the upper and lower mold clamping action begins.

[0054] The upper die base 201 and other components fixed thereon continue to move downward to 170 mm from the bottom dead center, and the guide sleeves 202 fixed at the four corners of the upper die base 201 begin to engage with the guide pillars 103 fixed at the four corners of the lower die base 101 .

[0055] The upper die seat 201 and other parts fixed thereon continue to move downward to 90 mm from the bottom dead center, and the third guide plate 207 fixed on the cam drive seat 206 begins to engage with the body guide surface of the corresponding area of ​​the side flanging punch slider 105. At the same time, the second angle guide plate 205 fixed on the cam drive seat 206 begins to engage with the first angle guide plate 104 fixed on the side flanging punch slider 105. The third guide plate 207 plays a role in preventing lateral force, and the second angle guide plate 205 plays a driving role on the side flanging punch slider 105 by engaging with the angle guide plate 104. As the upper die seat 201 and other parts fixed thereon continue to move downward, the rigid-driven side flanging punch cam slider mechanism continues to slide backward under the drive of the cam drive seat 206 until it runs to the working state. That is, the working surface of the movable punch 109 and the working surface of the fixed punch 102 are completely flush in the parting line area. During this process, the piston rod of the first nitrogen spring 111 is gradually compressed, and the elastic potential energy required for the return stroke of the rigid-driven side flanging punch wedge slider mechanism is continuously accumulated.

[0056] The upper die base 201 and other components fixed thereon continue to move downward to 60 mm from the bottom dead center, and the lower end face of the piston rod of the second nitrogen spring 211 begins to contact the supporting surfaces of the corresponding areas of the main pressure plate 210 and the insert pressure plate 209, and begins to provide pressing force for the main pressure plate 210 and the insert pressure plate 209. The working surfaces of the main pressure plate 210 and the insert pressure plate 209 begin to contact the upper surface of the part and press the part. After that, the main pressure plate 210 and the insert pressure plate 209 remain relatively still with the part and no longer move downward.

[0057] The upper die base 201 and other components fixed thereon continue to move downward to 45 mm from the bottom dead center, and the side flanging wedge slider 204 begins to engage with the wedge lower driving block 107. Then, driven by the wedge upper driving block 203, the side flanging wedge slider 204 and the flanging die insert 214 fixed thereon begin to slide forward (horizontally).

[0058] The upper die base 201 and other components fixed thereon continue to move downward to 40 mm away from the bottom dead center, and the fourth guide plate 208 begins to engage with the main body guide surface of the corresponding area of ​​the side flanging punch slider 105. Under the sliding cooperation between the fourth guide plate 208 and the side flanging punch slider 105, the flanging die insert 214 obtains upward support, thereby ensuring the force balance of subsequent side flanging forming.

[0059] The upper die base 201 and other components fixed thereon continue to move downward to 30 mm from the bottom dead center, and the piston rod of the third nitrogen spring 215 begins to contact the supporting surface of the corresponding area of ​​the insert pressing plate 209. Then, as the upper die continues to descend, the piston rod of the third nitrogen spring 215 is gradually compressed and provides corresponding pressing material to offset the lateral force generated by the inclined pressing material of the insert pressing plate 209.

[0060] The upper die seat 201 and other components fixed thereon continue to move downward to 15 mm from the bottom dead center, and the flanging forming edge of the flanging die insert 214 begins to contact the upper surface of the part, and the side flanging forming starts.

[0061] The upper die base 201 and other components fixed thereon continue to move downward to a distance of 0 mm from the bottom dead center, and under the joint action of the flanging die insert 214 and the movable punch 109, the side flanging of the part is completed.

[0062] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A side outer panel small angle primary side flanging forming die, comprising an upper die base (201), a lower die base (101) and a fixed punch (102) arranged between the upper die base (201) and the lower die base (101), wherein the fixed punch (102) is fixed on the lower die base (101), characterized in that: A rigidly driven side flanging punch wedge slider mechanism and an upper and lower dual-driven side flanging die wedge mechanism that cooperate with each other are provided between the upper die seat (201) and the lower die seat (101).

2. A small angle primary side flanging forming die for side outer panel according to claim 1, characterized in that: The four corner regions of the lower die base (101) are fixed with a first guide plate (106) and a guide column (103); the first guide plate (106) forms a sliding fit relationship with the main body guide surfaces of the four corner regions of the upper die base (201); the four corner regions of the upper die base (201) are fixed with a guide sleeve (202); the guide sleeve (202) forms a sliding fit relationship with the guide column (103).

3. The small angle primary side flanging forming die for side outer panel according to claim 1, characterized in that: The rigid driven side flanging punch oblique wedge slider mechanism comprises a side flanging punch slider (105), a first angle guide plate (104), an oblique wedge lower driving block (107), a movable punch (109), a second guide plate (110), an oblique wedge side guide plate (113), and a first nitrogen spring (111); the first angle guide plate (104) is obliquely fixed to the top side of the side flanging punch slider (105); the oblique wedge lower driving block (107) is fixed to the middle of the side flanging punch slider (105); the movable punch (109) is fixed to one side of the side flanging punch slider (105); the top body guide surface of the movable punch (109) is in contact with the fixed punch (102); The guide surface of the bottom body forms a sliding fit relationship, the movable punch (109) contacts the lower surface of the part, the inclined wedge side guide plate (113) is fixed on the side flanging punch slider (105) and arranged on two opposite sides of the side flanging punch slider (105), the inclined wedge side guide plate (113) forms a sliding fit relationship with the lower die seat (101), the second guide plate (110) is fixed on the side flanging punch slider (105) and forms a sliding fit relationship with the lower die seat (101), the first nitrogen spring (111) is fixed on the side flanging punch slider (105), and the piston rod of the first nitrogen spring (111) contacts the upper support surface of the lower die seat (101).

4. The small angle primary side flanging forming die for the side outer panel according to claim 3, characterized in that: It also includes a buffer polyurethane (112), wherein the buffer polyurethane (112) is fixed on the side flanging punch slider (105) and arranged on the other two opposite sides of the side flanging punch slider (105).

5. The small angle primary side flanging forming die for side outer panel according to claim 3, characterized in that: The upper and lower double-driven side flanging die inclined wedge mechanism comprises an inclined wedge upper driving block (203), a side flanging inclined wedge slider (204), a fourth guide plate (208), a fifth guide plate (213), an anti-lateral force support seat (212), a flanging die insert (214), and a third nitrogen spring (215); the flanging inclined wedge slider (204) and the inclined wedge upper driving block (203) form a sliding fit relationship; the inclined wedge upper driving block (203) is fixed on the upper die seat (201); and the flanging die insert (214) is fixed to the upper die seat (201). The fourth guide plate (208) is fixed on the side flanging oblique wedge slider (204), the fourth guide plate (208) is fixed on the flanging die insert (214), and forms a sliding fit relationship with the guide surface of the lower die seat (101) body, the fifth guide plate (213) is fixed on the flanging die insert (214), and always forms a sliding fit relationship with the anti-lateral force support seat (212), the anti-lateral force support seat (212) is fixed on the upper die seat (201), and the third nitrogen spring (215) is fixed on the flanging die insert (214).

6. The small angle primary side flanging forming die for the side outer panel according to claim 5, characterized in that: A second angle guide plate (205) is obliquely fixed on the top side of the oblique wedge drive seat (206), and the oblique wedge drive seat (206) is fixed on the upper die seat (201). The first angle guide plate (104) and the second angle guide plate (205) form a sliding fit relationship. Driven by the upper die seat (201), the relative sliding movement between the first angle guide plate (104) and the second angle guide plate (205) drives the side flanging punch slider (105) to move horizontally. The side flanging oblique wedge slider (204) forms a sliding fit relationship with the oblique wedge lower driving block (107), and the fourth guide plate (208) engages with the main body guide surface of the corresponding area of ​​the side flanging punch slider (105).

7. The small angle primary side flanging forming die for side outer panel according to claim 5, characterized in that: The flanging die insert (214) is provided with a flanging forming cutting edge for contacting the upper surface of the part.

8. The small angle primary side flanging forming die for side outer panel according to claim 6, characterized in that: A third guide plate (207) is fixed on the wedge drive seat (206) and meshes with the body guide surface of the corresponding area of ​​the side flanging punch slider (105) to prevent lateral force.

9. The small angle primary side flanging forming die for side outer panel according to claim 3, characterized in that: A wedge pressure plate (108) is fixed on the lower die seat (101) for limiting the vertical position of the wedge slider mechanism of the rigid-driven side flanging punch, and the bottom guide surface of the wedge pressure plate (108) and the top guide surface of the wedge side guide plate (113) always form a sliding fit relationship.

10. The small angle primary side flanging forming die for side outer panel according to claim 5, characterized in that: A second nitrogen spring (211) is fixed on the upper die base (201), and the second nitrogen spring (211) is connected to the main pressing plate (210) to provide a pressure source for it. The main pressing plate (210) is embedded in the upper die base (201) and contacts the upper surface of the part. An insert pressing plate (209) is fixed on the main pressing plate (210), and the piston rod of the third nitrogen spring (215) is pressed against the insert pressing plate (209).

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