A side flanging forming die with multi-surface negative angle flanging of a side wall outer plate

Abstract

The application discloses a side flanging forming die for a side wall outer plate with multi-face negative angle flanging, a movable punch, a fixed punch, a first side flanging female die slider matched with the movable punch, a second side flanging female die slider matched with the fixed punch and a movable punch driving mechanism for driving the movable punch to move to a die closing position with the fixed punch are arranged in a lower die base; the movable punch matched with the first side flanging female die slider can form a first negative angle flanging machining die for machining a negative angle flanging structure of a cooperation area of the side wall outer plate and a tail lamp, and the fixed punch matched with the second side flanging female die slider can form a second negative angle flanging machining die for machining a negative angle flanging structure of a cooperation area of the side wall outer plate and a tail gate; a first side flanging female die driving block for driving the first side flanging female die slider to move to a matched position with the movable punch and a second side flanging female die driving block for driving the second side flanging female die slider to move to a matched position with the fixed punch are arranged in an upper die base.

Description

Technical Field

[0001] This invention relates to the field of vehicle processing equipment technology, specifically to a side flange forming mold for a side panel with multi-faceted negative angle flanges. Background Technology

[0002] In recent years, with the slowdown in market demand for automobiles, competition in the domestic passenger vehicle market has become increasingly fierce. How to reduce overall vehicle manufacturing costs, shorten the development and launch cycle of new models, and improve the market competitiveness of models is a common challenge faced by major automobile manufacturers in this highly competitive environment. In the vehicle manufacturing process, reducing the cost of stamping dies for body panels and shortening the die manufacturing cycle are important ways for automakers to improve the price competitiveness of their models. Compared with general body panels, side panels are characterized by their large size, complex shape, and high requirements for appearance quality. This determines the high difficulty of the stamping process and die structure for side panels. As the most difficult-to-form and most expensive body panel to manufacture, side panels typically require 1-2 more die processes than other body panels. Currently, most domestic automakers produce side panels with 4 or 5 processes, and some even require 6 processes. While the 4-6 process scheme does not pose any problems with product formability, the increased number of processes leads to an increase in the number of die sets, presses, and batch production stamping times, resulting in higher development and manufacturing costs. Therefore, how to reduce the number of mold processes for the side panel is an urgent problem to be solved.

[0003] Current research on shortening the stamping process for passenger vehicle side panel outer shell dies mainly focuses on simplifying the product structure. This includes minimizing negative angle flange structures or disassembling the product to break down some negative angle flange structures into individual small structural components. However, because the fit clearance between the side panel outer shell and the tailgate and taillights is relatively small, the flange structure in the corresponding matching area of ​​the side panel outer shell needs to be as inward as possible, i.e., designed as a negative angle flange structure, especially in the taillight area. If the flange angle is too large, it will affect the assembly of the taillights and side panel outer shell. Therefore, the negative angle flange structure in the assembly parts of the side panel outer shell with the tailgate and taillights cannot be reduced.

[0004] For side panels with negative angle flanges in multiple directions along the circumference, the flange forming process requires at least two steps. It is impossible to simultaneously form negative angle flanges in multiple directions within a single mold in the same process. Therefore, for side panels with negative angle flanges in multiple directions along the circumference, the stamping process still mainly consists of 4 to 5 steps, and there is little chance of significant breakthroughs in shortening the mold structure. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a side flanging forming mold that can effectively reduce the flanging forming process of the side panel and realize the simultaneous forming of negative angle flanging structures of the side panel in multiple directions within a set of molds.

[0006] To achieve this objective, the present invention provides a side-flanging forming mold for a side panel with multi-faceted negative angle flanges, comprising a lower mold base and an upper mold base. The lower mold base contains a movable punch, a fixed punch, a first side-flanging die slider that engages with the movable punch, a second side-flanging die slider that engages with the fixed punch, and a movable punch drive mechanism for driving the movable punch to a position where it engages with the fixed punch. The movable punch, in conjunction with the first side-flanging die slider, forms a first negative angle flange processing mold for processing the negative angle flange structure in the area where the side panel engages with the taillight. The fixed punch, in conjunction with the second side-flanging die slider, forms a second negative angle flange processing mold for processing the negative angle flange structure in the area where the side panel engages with the tailgate. The upper mold base contains a first side-flanging die drive block for driving the first side-flanging die slider to a position where it engages with the movable punch, and a second side-flanging die drive block for driving the second side-flanging die slider to a position where it engages with the fixed punch.

[0007] Furthermore, the movable punch driving mechanism includes a first movable punch driving mechanism fixedly connected to one bottom side of the movable punch for driving the movable punch to reciprocate along the X direction, and a second movable punch driving mechanism that engages with the back side of the movable punch via a wedge block to cause the movable punch to reciprocate along the Y direction.

[0008] Furthermore, the first movable punch drive mechanism includes a first movable punch drive device for providing driving force and fixed in the lower die holder, and a first synchronization block fixedly connected to the power output end of the first movable punch drive device. The first synchronization block is fixed to the bottom of one side of the movable punch, and the first movable punch drive device is arranged at an angle to the X direction.

[0009] Furthermore, the second movable punch drive mechanism includes a second movable punch drive device fixed in the lower die holder for providing driving force and a second synchronization block fixedly connected to the power output end of the second movable punch drive device. The second synchronization block is fixed with a movable punch drive slider. Mutually cooperating wedge blocks are fixed on the back surface of the movable punch and the side surface of the movable punch drive slider near the movable punch. The second movable punch drive device is arranged along the X direction.

[0010] Furthermore, an angle guide plate with a guide slope at the top is fixed between the movable punch drive slider and the second synchronization block, and an angle guide plate drive block for driving the angle guide plate to move along the X direction is fixed inside the upper die base with a drive slope at the bottom that cooperates with the guide slope of the angle guide plate.

[0011] Furthermore, the first side-flanged die slider and the movable punch are respectively provided with interlocking cutting edges.

[0012] Furthermore, a flanging insert is fixed on the second side flanging die slider, and the flanging insert and the fixed punch are respectively provided with interlocking cutting edges.

[0013] Furthermore, the surface of the first side-flanged die slider away from the movable punch is a guide slope, and the bottom of the first side-flanged die drive block is provided with a drive slope that cooperates with the guide slope of the first side-flanged die slider.

[0014] Furthermore, the surface of the second side-flanging die slider away from the movable punch is a guide slope, and the bottom of the second side-flanging die drive block is provided with a drive slope that cooperates with the guide slope of the second side-flanging die slider.

[0015] Furthermore, both the interior of the first side-flanged die slider and the interior of the second side-flanged die slider are provided with spring return structures that can cooperate with the inner surface of the lower die base.

[0016] The beneficial effects of this invention are as follows: For the negative angle flanging structure of the side panel outer shell from the tailgate mating area to the taillight mating area, this invention designs two movable punch driving mechanisms within the side flanging forming mold. These two movable punch driving mechanisms share the same movable punch, which is driven by two driving mechanisms in different directions. This solves the problem of excessive structural layout space required for different movable punch driving mechanisms, necessitating multi-process flanging forming, and the increased number of mold processes. Side panels with traditional mold structures generally require at least two sets of molds to complete the multi-faceted negative angle flanging structure. However, using the side flanging forming mold designed in this invention, the multi-faceted negative angle flanging structure of the side panel outer shell only requires one set of molds, reducing at least one stamping mold. A car model typically has two side panels (left and right). A set of side panel flanging forming molds requires an investment of approximately two million yuan. Applying this invention patent can reduce stamping mold investment for each car model by at least four million yuan. Attached Figure Description

[0017] Figure 1 A perspective view (excluding the upper mold base) of the side flange forming mold for the side outer panel with multi-faceted negative angle flange designed for this invention;

[0018] Figure 2 A top view (excluding the upper mold base) of the side flange forming mold for the side outer panel with multi-faceted negative angle flange designed for this invention;

[0019] Figure 3 A perspective view of the lower mold base of the side flange forming mold for the side outer panel with multi-faceted negative angle flange designed for this invention;

[0020] Figure 4 A top view of the lower mold base of the side flange forming mold for the side outer panel with multi-faceted negative angle flange designed in this invention;

[0021] Figure 5 This is a perspective view of the first side-flanged die slider in this invention;

[0022] Figure 6 This is a perspective view of the second side flange die slider in this invention;

[0023] Figure 7 This is a perspective view of the first movable punch driving mechanism in this invention.

[0024] Figure 8 This is a perspective view of the first movable punch driving mechanism of the second movable punch driving mechanism in this invention;

[0025] Figure 9 for Figure 2 Sectional view of AA;

[0026] Figure 10 for Figure 2 BB section view;

[0027] Figure 11 for Figure 2 CC section view;

[0028] Figure 12 for Figure 2 DD section view;

[0029] Figure 13 for Figure 2 EE section view;

[0030] Figure 14 This is a front view of the side outer panel of the vehicle body in this invention;

[0031] Figure 15 This is a front view of the area where the side outer panel of the vehicle body mates with the door and taillights in this invention;

[0032] Figure 16 for Figure 15 Middle FF cross section;

[0033] Figure 17 for Figure 15 GG cross-section diagram;

[0034] Figure 18 for Figure 15 Middle HH cross-section diagram;

[0035] Wherein, 1—lower die base, 2—movable punch, 3—fixed punch, 4—first side flanging die slider, 5—second side flanging die slider, 6—first negative angle flanging processing die, 7—second negative angle flanging processing die, 8—first side flanging die driving block, 9—second side flanging die driving block, 10—angle guide plate driving block, 11—first movable punch driving mechanism (11.1—first movable punch driving device, 11.2—first... 12—Second movable punch drive mechanism (12.1—Second movable punch drive device, 12.2—Second synchronization block, 12.3—Angle guide plate, 12.4—Modular punch drive slider), 13—Flanged insert, 14—Side outer plate, 15—Wedge pressure plate, 16—Sliding guide plate, 17—First wedge block, 18—Second wedge block, 19—Fixing block, 20—Guide pin, 21—Reset spring, 22—Shock damping block. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0037] like Figure 1 The side flanging forming mold shown in Figure 13 includes a lower mold base 1 and an upper mold base (not shown in the figure). The lower mold base 1 contains a movable punch 2, a fixed punch 3, a first side flanging die slider 4 that cooperates with the movable punch 2, a second side flanging die slider 5 that cooperates with the fixed punch 3, and a movable punch drive mechanism for driving the movable punch 2 to a position where it engages with the fixed punch 4. The movable punch 2, in cooperation with the first side flanging die slider 4, forms a first negative angle flanging processing mold 6 for processing the negative angle flanging structure of the area where the side panel 14 engages with the taillight. The fixed punch 3, in cooperation with the second side flanging die slider 5, forms a second negative angle flanging processing mold 7 for processing the negative angle flanging structure of the area where the side panel 14 engages with the tailgate. The upper mold base contains a first side flanging die drive block 8 for driving the first side flanging die slider 4 to a position where it engages with the movable punch 2, and a second side flanging die drive block 9 for driving the second side flanging die slider 5 to a position where it engages with the fixed punch 3. The movable punch drive mechanism includes a first movable punch drive mechanism 11 fixedly connected to one bottom side of the movable punch 2 for driving the movable punch 2 to reciprocate along the X direction, and a second movable punch drive mechanism 12 cooperating with the back side of the movable punch 2 through a wedge block to cause the movable punch 2 to reciprocate along the Y direction.

[0038] like Figure 1 —5、 Figure 9 and Figure 13 As shown, the first-side flanging die drive block 8 is fixed to the upper die base by bolts, pins, and a key, remaining relatively stationary with the upper die base and moving synchronously with it, providing a driving force source for the first-side flanging die slider 4. The sliding guide plate 16 is fixed to the first-side flanging die drive block 8 by bolts and forms a sliding fit with the lower die base 1 in the Z direction. The sides and bottom of the first-side flanging die slider 4 are also fixed with sliding guide plates 16 by bolts. The sliding fit movement between the first-side flanging die slider 4 and the first-side flanging die drive block 8 is achieved through the sliding guide plate 16 on the side of the first-side flanging die slider 4, and the sliding fit movement between the first-side flanging die slider 4 and the lower die base 1 is achieved through the sliding guide plate 16 at the bottom of the first-side flanging die slider 4. The first-side flanging die slider 4 is an integral slider, with the flanging working edge directly machined on the slider. The working angle of the first-side flanging die slider 4 is 7°, utilizing a smaller working angle to achieve a short stroke of the wedge slider, thereby controlling the dimensions in the mold width direction. The shock-absorbing block 22 (which can be shock-absorbing polyurethane) is fixed to the first side flange die slider 4 by bolts to reduce the impact load of the first side flange die slider 4 on the movable punch 2 during operation. Figure 5 As shown, sliding guide plates 16 are bolted to both sides of the first-side flanging die slider 4, forming a sliding fit with the lower die base 1. The wedge plate 15 is bolted to the lower die base 1 and forms a sliding fit with the top surface of the sliding guide plate 16 on the side of the first-side flanging die slider 4, thereby restricting the movement of the first-side flanging die slider 4 in the Z direction. The first-side flanging die slider 4 can only achieve reciprocating motion in the wedge direction, that is, it can only complete the reciprocating motion within the set shape of the wedge slider along a direction at a 7° angle to the horizontal plane. The first side flanging die slider 4 is provided with a spring return structure that cooperates with the lower die base 1. It includes a return spring 21 disposed in the first side flanging die slider 4, the return spring 21 is sleeved on the guide pin 20, the guide pin 20 is fixed on the fixing block 19, the fixing block 19 is fixed on the lower die base 1, the return spring 19 provides the force source required for the return stroke of the first side flanging die slider 4, and drives the first side flanging die slider 4 to quickly return to the initial state after forming is completed.

[0039] like Figure 1 —4、 Figure 6 and Figure 10As shown, the second-side flanging die drive block 9 is fixed to the upper die base by bolts, pins, and a key, remaining relatively stationary with the upper die base and moving synchronously with it, providing a driving force source for the second-side flanging die slider 5. The sliding guide plate 16 is fixed to the second-side flanging die drive block 9 by bolts and forms a sliding fit with the guide surface of the lower die base 1 in the Z direction. The side and bottom surfaces of the second-side flanging die slider 5 are both fixed with sliding guide plates 16 by bolts. The sliding fit between the second-side flanging die slider 5 and the second-side flanging die drive block 9 is achieved through the sliding guide plates 16 on the side of the second-side flanging die slider 5, and the sliding fit with the lower die base 1 is achieved through the sliding guide plates 16 at the bottom of the second-side flanging die slider 5. The second-side flanging die slider 5 is a split slider, with the flanging working edge located on the flanging insert 13, which is fixed to the second-side flanging die slider 5 by bolts and pins. The working angle of the second side flanging die slider 5 is 5°, which is used to form the taillight tip of the side outer plate 14 and the negative angle flanging structure of the taillight with different angles on the upper and lower sections. Figure 6 As shown, the sliding guide plate 16 is fixed to both sides of the second-side flanging die slider 5 by bolts, and the side of the second-side flanging die slider 5 forms a sliding fit with the lower die base 1. The wedge pressure plate 15 is fixed to the lower die base 1 by bolts and forms a sliding fit with the top surface of the sliding guide plate 16 on the side of the second-side flanging die slider 5, thereby restricting the movement of the second-side flanging die slider 5 in the Z direction. Under the constraint of the sliding guide plate 16 and the wedge pressure plate 15, the second-side flanging die slider 5 can only realize reciprocating motion in the wedge direction, that is, it can only complete the reciprocating motion within the set shape of the wedge slider along the direction at a 5° angle to the horizontal plane. The second-side flanging die slider 5 is provided with a spring return structure that cooperates with the lower die base 1. It includes a return spring 21 provided in the second-side flanging die slider 5. The return spring 21 is sleeved on the guide pin 20. The guide pin 20 is fixed on the fixing block 19. The fixing block 19 is fixed on the lower die base 1. The return spring 19 provides the force source required for the return stroke of the second-side flanging die slider 5, driving the second-side flanging die slider 5 to quickly return to the initial state after forming.

[0040] like Figure 1 —4、 Figure 7 and Figure 12 As shown, the first movable punch drive mechanism 11 includes a first movable punch drive device 11.1 (which may be a cylinder). The first movable punch drive device 11 is fixed to the lower die base 1 by bolts and pins, and is fixedly connected to the movable punch 2 as a whole by a first synchronizing block 11.2. The driving end of the first movable punch drive device 11.1 moves at a 40° angle to the X direction, such as... Figure 2 As shown. The fixed punch 3 is fixed to the lower die base 1 by bolts and pins, and forms a sliding fit with the movable punch 2 through the guide surface of the body. The parting line between the two is as shown. Figure 2 As shown, during the mold's operation, the fixed punch 3 and the lower mold base 1 remain relatively stationary, while only the movable punch 2 reciprocates in the X direction. Figure 7 As shown, the sliding guide plate 16 is fixed to the lower die base 1 by bolts and forms a sliding fit with the bottom surface of the movable punch 2. The first wedge block 17 is fixed to the side of the movable punch 2 by bolts, as shown. Figure 4 As shown, the first wedge block 17 and the second wedge block 18, which is fixed on the movable punch drive slider 12.4, form a sliding fit relationship.

[0041] like Figure 1 —4、 Figure 8 and Figure 11 As shown, the second-side flanging die drive block 9 is fixed to the upper die base by bolts, pins, and a key, remaining relatively stationary with the upper die base and moving synchronously with it, providing a driving force source for the movable punch drive slider 12.4. The angle guide plate 12.3 and the second wedge block 18 are fixed to the movable punch drive slider 12.4 by bolts. The angle guide plate 12.3 allows for multi-stage and multiple changes in the movement direction of the movable punch drive slider 12.4. The sliding engagement between the second-side flanging die drive block 9 and the movable punch drive slider 12.4 is achieved through the angle guide plate 12.3. The angle guide plate drive block 10 converts the Z-direction movement into the X-direction movement of the movable punch drive slider 12.4 via the angle guide plate 12.3. The movable punch drive slider 12.4, in turn, engages with the first wedge block 17 via the second wedge block 18, converting the X-direction movement into the Y-direction movement of the movable punch 2. The second movable punch drive device 12.1 (which may be a cylinder) is fixed to the lower die base 1 by bolts and pins, and is connected to the movable punch drive slider 12.4 as a whole by the second synchronizing block 12.2, providing a power source for the reciprocating motion of the movable punch drive slider 12.4 in the X direction. The sliding guide plate 16 is fixed to the side and bottom surfaces of the movable punch drive slider 12.4 by bolts, forming a sliding fit with the lower die base 1. The wedge pressure plate 15 is fixed to the lower die base 1 by bolts, located above the sliding guide plate 16 on the side of the movable punch drive slider 12.4, and forms a sliding fit with the top surface of the sliding guide plate 16 on the side of the movable punch drive slider 12.4. The wedge pressure plate 15 and the sliding guide plate 16 together restrict the movement of the movable punch drive slider 12.4 in the Z direction.

[0042] like Figure 14 —18 shows the side panel with a multi-faceted negative angle flange structure. The flanges from the tailgate fitting area to the taillight fitting area are all negative angle structures, and the included angles are all small. The included angle of the flange in the tailgate fitting area is 42°, the included angle of the upper section of the flange in the taillight fitting area is 56°, the included angle of the lower section of the flange in the taillight fitting area is 68°, and the included angle of the flange at the corner tip is 27°. The flanges in multiple directions are negative angle structures.

[0043] The negative angle flanging forming process of the side outer plate based on the above-mentioned side flanging forming mold is as follows: the first side flanging die driving block 8, the second side flanging die driving block 9, and the angle guide plate driving block 10 move downward along the Z direction under the drive of the upper mold base. At the same time, the first movable punch driving device 11.1 drives the movable punch 2 to move forward in a direction at 40° with the X axis, and the second movable punch driving device 12.1 drives the movable punch driving slider 12.4 to move forward along the X direction. Through the cooperation of the first wedge block 17 and the second wedge block 18, the movable punch 2 is indirectly driven to move forward along the Y direction. Under the direct drive of the first movable punch driving device 11.1 and the indirect drive of the second movable punch driving device 12.1, the movable punch 2 slides to the working position. At this time, the flanging edge contour of the movable punch 2 and the fixed punch 3 remains flush and continuous, the parting line gap becomes 0, and the movable punch 2 is driven to the working state. When the upper die reaches a distance of 210mm from the bottom dead center, the outer guide plate of the die begins to engage with the guide surface of the body; when the upper die reaches a distance of 180mm from the bottom dead center, the outer guide post of the die begins to engage with the guide sleeve; when the upper die reaches a distance of 150mm from the bottom dead center, the first side flanging die drive block 8 begins to engage with the lower die base 1, and at the same time, the second side flanging die drive block 9 begins to engage with the lower die base 1; when the upper die reaches a distance of 120mm from the bottom dead center, the angle guide plate drive block 10 begins to engage with the angle guide plate 12.3; when the upper die reaches a distance of 100mm from the bottom dead center, the first side flanging die drive block 8 begins to engage with the first side flanging die slider 4, and at the same time, the second side flanging die drive block 9 begins to engage with the second side flanging die slider 5. The first side flanging die slider 4 and the second side flanging die slider 5 are driven to continuously approach the movable punch 3 and the fixed punch 3 in the wedge working direction. The stroke of both the first side flanging die slider 4 and the second side flanging die slider 5 in the wedge working direction is 90mm. When the upper die reaches a distance of 45mm from the bottom dead center, the flanging edge of the flanging insert 13 on the second side flanging die slider 5 begins to contact the product and begins to form the negative angle structure of the tailgate mating area of ​​the side outer panel 14. When the upper die reaches a distance of 40mm from the bottom dead center, the flanging edge of the first side flanging die slider 4 begins to contact the product and begins to form the negative angle structure of the taillight mating area of ​​the side outer panel 14. The upper die continues to descend until it reaches the bottom dead center, and the side flanging is completed.

[0044] This invention addresses the negative angle flanging structure of the side panel outer shell, from the tailgate mating area to the taillight mating area. It designs two movable punch drive mechanisms within the side flanging forming mold, sharing a single movable punch 2. The movable punch 2 is driven by two drive mechanisms in different directions. This solves the problem of excessive structural layout space required for separate movable punches 2 for different movable punch drive mechanisms, necessitating multi-stage flanging forming and increasing mold processes. With traditional mold structures, the side panel outer shell 14 with its multi-faceted negative angle flanging structure typically requires at least two sets of molds. However, using the side flanging forming mold designed in this invention, the multi-faceted negative angle flanging structure of the side panel outer shell 14 can be completed with only one set of molds, reducing at least one stamping mold. A vehicle model typically has two side panels (left and right). A single side panel flanging forming mold requires an investment of approximately two million yuan. Applying this invention can reduce stamping mold investment for each vehicle model by at least four million yuan.

[0045] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the structure of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A side flange forming mold for a side panel with multi-faceted negative angle flanges, comprising a lower mold base (1) and an upper mold base; characterized in that: The lower die base (1) is provided with a movable punch (2), a fixed punch (3), a first side flange die slider (4) that cooperates with the movable punch (2), a second side flange die slider (5) that cooperates with the fixed punch (3), and a movable punch drive mechanism for driving the movable punch (2) to move to the mold closing position with the fixed punch (3). The movable punch (2) cooperates with the first side flanging die slider (4) to form a first negative angle flanging processing die (6) for processing the negative angle flanging structure of the area where the side outer panel (14) and the taillight cooperate. The fixed punch (3) cooperates with the second side flanging die slider (5) to form a second negative angle flanging processing die (7) for processing the negative angle flanging structure of the area where the side outer panel (14) and the tailgate cooperate. The upper mold base is provided with a first side-flanging die driving block (8) for driving the first side-flanging die slider (4) to move to the position of engaging with the movable punch (2) and a second side-flanging die driving block (9) for driving the second side-flanging die slider (5) to move to the position of engaging with the fixed punch (3). The movable punch driving mechanism includes a first movable punch driving mechanism (11) and a second movable punch driving mechanism (12). The first movable punch driving mechanism (11) includes a first movable punch driving device (11.1) arranged at an angle to the X direction. The first movable punch driving device (11.1) drives the movable punch (2) to reciprocate in a direction at an angle to the X direction. The second movable punch driving mechanism (12) includes a second movable punch driving device (12.1) arranged along the X direction. The second movable punch driving device (12.1) cooperates with the back of the movable punch (2) through a wedge block to drive the movable punch (2) to reciprocate in the Y direction.

2. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 1, characterized in that: The first movable punch drive mechanism (11) is fixedly connected to the bottom of one side of the movable punch (2).

3. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 2, characterized in that: The first movable punch driving device (11.1) is used to provide driving force and is fixed inside the lower die holder (1). The first movable punch drive mechanism (11) further includes a first synchronization block (11.2) fixedly connected to the power output end of the first movable punch drive device (11.1), and the first synchronization block (11.2) is fixed to the bottom of one side of the movable punch (2).

4. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 2, characterized in that: The second movable punch drive device (12.1) is used to provide driving force and is fixed inside the lower die holder (1). The second movable punch drive mechanism (12) further includes a second synchronization block (12.2) fixedly connected to the power output end of the second movable punch drive device (12.1), and the second synchronization block (12.2) is fixed with a movable punch drive slider (12.4). The wedge blocks are respectively fixed to the back of the movable punch (2) and the side surface of the movable punch drive slider (12.4) near the movable punch (2).

5. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 4, characterized in that: An angle guide plate (12.3) with a guide slope at the top is fixed between the movable punch drive slider (12.4) and the second synchronization block (12.2). An angle guide plate drive block (10) with a drive slope at the bottom that cooperates with the guide slope of the angle guide plate (12.3) and for driving the angle guide plate (12.3) to move along the X direction is fixed inside the upper die base.

6. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 1, characterized in that: The first side-flanged die slider (4) and the movable punch (2) are respectively provided with interlocking cutting edges.

7. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 1, characterized in that: A flanging insert (13) is fixed on the second side flanging die slider (5), and the flanging insert (13) and the fixed punch (3) are respectively provided with mutually meshing cutting edges.

8. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 1, characterized in that: The side surface of the first side-flanged die slider (4) away from the movable punch (2) is a guide slope, and the bottom of the first side-flanged die drive block (8) is provided with a drive slope that cooperates with the guide slope of the first side-flanged die slider (4).

9. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 1, characterized in that: The side surface of the second side-flanging die slider (5) away from the movable punch (2) is a guide slope, and the bottom of the second side-flanging die drive block (9) is provided with a drive slope that cooperates with the guide slope of the second side-flanging die slider (5).

10. The side flange forming mold for the side outer panel with multi-faceted negative angle flange as described in claim 1, characterized in that: Both the interior of the first side-flanged die slider (4) and the interior of the second side-flanged die slider (5) are provided with spring reset structures that can cooperate with the inner surface of the lower die base (1).

Images