Fender forming die

Abstract

The application provides a fender and a forming die thereof. The fender is located between a headlamp and a cowl cover. The upper front end of the fender is an angular panel surface. The upper edge and / or the lower edge of the angular panel surface is provided with a flange located in the cowl. The forming die of the fender comprises a male die for forming the inner side panel surface of the angular panel surface. The top surface edge of the male die is in abutment with the inner side surface of the lower flange and the upper flange respectively. The bottom of the male die is connected with a sliding wedge. The first segment movement of the male die is divided into a first sub-movement towards the rear end of the fender and a second sub-movement away from the back surface of the fender. The flanges are formed at the upper and lower edges of the angular panel surface to improve the strength of the part. The forming die forms the flanges by using the male die. The first segment movement of the male die allows the male die to avoid the flanges at the upper and lower edges of the angular panel surface. Then the fender can be conveniently taken out. The forming die can be smoothly demoulded without additional processes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile die, in particular to a fender forming die. BACKGROUND

[0002] The fender of an automobile is the outer panel above the wheels, and is named as bird wing due to its shape and position. The front fender above the front wheels of some vehicles is designed as a long and narrow shape, and cooperates with the hawk-eye headlamp group on the front side to form an appearance effect with strong visual impact. However, the front end of the fender is reserved with a U-shaped or V-shaped missing part A' for accommodating the corner part of the headlamp, that is, the corner of the headlamp extends to the side of the vehicle body to meet the requirements of modeling or arranging the turn signal lamp. The upper edge contour A1 of the missing part A' and the upper edge A2 of the fender enclose an angular panel A3.

[0003] Since the sharp corner part of the fender near the upper side of the headlamp is arranged in suspension in the whole vehicle, the long and narrow shape of the fender will cause insufficient strength at this part, and the overall rigidity cannot meet the requirements. To solve this problem, the following solutions are generally used in the prior art: a reinforcing part is additionally arranged inside the sharp corner part of the fender, and the two are fixed by adhesive connection to enhance the rigidity of the sharp corner part of the fender. However, this solution increases the manufacturing cost, and the temperature expansion coefficients of the adhesive and the sheet metal part are different. The strength of the reinforcing part is also much greater than that of the sharp corner part of the fender. These factors will increase the matching gap between the fender and the headlamp and the outer panel of the hood, and affect the aesthetic appearance of the whole vehicle. SUMMARY

[0004] The purpose of the present application is to provide a fender forming die to improve the strength of the sharp corner part at the upper front end of the fender, and the workpiece can be smoothly ejected during the flanging of the sharp corner part of the fender.

[0005] To achieve the above purpose, the technical solution adopted by the present application is as follows:

[0006] A fender forming die, comprising a male die for forming an inner side panel of an angular panel, the top surface of the male die abuts against the back surface of the angular panel and the top surface of the male die is consistent with the design surface type of the angular panel, the top surface edges of the male die abut against the inner side surfaces of the lower flange and the upper flange respectively, the bottom of the male die is connected with a sliding wedge, the movement of the male die relative to the first section of the fender includes a first partial movement towards the rear end of the fender and a second partial movement away from the back surface of the fender, and the combined movement of the first partial movement and the second partial movement constitutes the movement displacement path of the male die relative to the fender;

[0007] The movement of the male die relative to the fender is a first section movement and a second section movement which are connected in sequence, the second section movement of the male die is towards the lower end of the fender, and the end point of the first section movement path constitutes the starting point of the second section movement path;

[0008] The sliding wedge is arranged on a wedge seat, the wedge seat is installed on the base, the sliding fit between the sliding wedge and the wedge seat constitutes the first section movement of the punch, and the sliding fit between the wedge seat and the base constitutes the second section movement of the punch;

[0009] The upper end of the fender upper portion between the headlamp and the engine hood cover is an angular plate surface extending in the direction of the vehicle head with an angular tip, and the upper edge and / or the lower edge of the angular plate surface has a turn-up located in the engine compartment;

[0010] The included angle between the upper turn-up at the upper edge of the angular plate surface and the lower turn-up at the lower edge and the angular plate surface is an acute angle;

[0011] The front ends of the upper turn-up and the lower turn-up are arranged in a discontinuous manner;

[0012] The lower turn-up is arranged on the upper edge of the angular profile missing part of the fender accommodating the headlamp.

[0013] The present application mainly forms turn-ups at the upper and lower edges of the angular plate surface of the upper end of the fender to improve the strength of the angular plate surface part. The forming die forms the turn-ups through a punch, the first section movement of the punch relative to the fender enables the punch to avoid the turn-ups at the upper and lower edges of the angular plate surface, and then a mechanical hand can be used to take away the fender, which can be smoothly demoulded without additional processes and is simple to operate. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 、 2 are respectively a schematic view and a bottom view of the fender;

[0015] Figure 3 is Figure 2 a sectional view at B-B;

[0016] Figure 4 is Figure 2 a partial enlarged view of the section at B-B;

[0017] Figure 5 、 6 are respectively a schematic view of the fender and the forming die in cooperation;

[0018] Figure 7 、 9 are respectively a schematic view of the punch and the fender in cooperation;

[0019] Figure 8 is an isometric view of the punch;

[0020] Figure 10 、 11 , 12 are respectively an isometric view of the forming die when the punch is at the start point, the end point of the first section movement and the end point of the second section movement;

[0021] Figure 13 Figure 10

[0022] Figure 14

[0023] Figure 15 Figure 14

[0024] Figure 16 DETAILED DESCRIPTION

[0025] Referring to the fender shown in the drawings, the upper end of the upper edge A2 and / or the lower edge A1 of the angular panel surface A3 between the headlamp and the cowl cover is provided with a flange inside the engine compartment. The above-mentioned solution can also be understood as follows: the panel surface of the fender facing the outside of the vehicle body and the inside of the engine compartment is referred to as the back surface, and therefore the flange is arranged at the edge of the back surface of the angular panel surface A3. In the prior art, the angular panel surface A3 of the fender A is arranged in a suspended manner, and the long and narrow shape of the angular panel surface A3 can cause insufficient strength at this part. In the present solution, the flanges inside the engine compartment at the upper edge A2 and the lower edge A1 increase the mounting points between the angular panel surface A3 of the fender A and the headlamp and the cowl cover, thereby enhancing the strength of the angular panel surface A3 and keeping the profile of the angular panel surface A3 stable. Figures 1-4 Preferably, the included angle between the upper flange A21 at the upper edge A2 of the angular panel surface A3 and the lower flange A11 at the lower edge A1 and the angular panel surface A3 is an acute angle. The angular panel surface A3 of the fender A is an arc surface, and the included angle in the above-mentioned solution refers to the included angle between the tangent plane of the arc-shaped angular panel surface A3 at the upper edge A2 and the lower edge A1 and the plane on which the upper flange A21 and the lower flange A11 are located. Since the space where the angular panel surface A3 is located is relatively narrow, in order to reserve the mounting positions of the headlamp and the cowl cover, the above-mentioned included angle is designed to be an acute angle.

[0026] Preferably, the lower flange A11 is arranged on the upper edge of the lower edge A1 of the angular profile missing part A' of the fender A accommodating the headlamp. It should be noted that the up-down position in the above-mentioned description refers to the positional relationship on the fender in the state of the actual vehicle. When mounted, the lower flange A11 is connected to the top of the headlamp, and the above-mentioned arrangement is more convenient for selecting the mounting points between the two.

[0027]

[0028] ​​​​​​​As another embodiment, in order to reduce the difficulty of forming the flanging, the front ends of the upper flanging A21 and the lower flanging A11 are discontinuously arranged, and the phenomenon of the continuous flanging inevitably causing the flanging to be bent and the decorative surface of the corner panel A3 to be warped is solved.

[0029] Without affecting the forming of the fender A, the length of the upper flanging A21 and the lower flanging A11 of the corner panel A3 is increased, and a mounting point is added at the flanging. The dimensional accuracy between the fender A and the surrounding sheet metal parts is easy to control, the investment is less, the lower flanging A11 can be connected with the shell of the vehicle lamp, and the surface difference accuracy between the corner panel A3 and the vehicle lamp is improved, and a uniform gap between the lower flanging A11 and the vehicle lamp can be obtained.

[0030] As shown in Figure 2 , 3 , due to the existence of the upper flanging A21 and the lower flanging A11, the stripping path of the working punch in the traditional mold structure is blocked by the continuously or intermittently arranged upper flanging A21 and lower flanging A11, and the workpiece cannot be normally stripped, so the corresponding new mold structure is indispensable.

[0031] Referring to Figures 5-16 , the fender forming mold includes a punch 10 for forming the inner side panel of the corner panel A3. The top surface of the punch 10 abuts against the back surface of the corner panel A3, and the top surface of the punch 10 is consistent with the design surface type of the corner panel A3. The top surface edges of the punch 10 respectively abut against the inner side surfaces of the lower flanging A11 and the upper flanging A21. The bottom of the punch 10 is connected with a sliding wedge 20. The sliding wedge 20 defines the first segment movement of the punch 10 relative to the fender A, which includes a first partial movement towards the rear end of the fender A and a second partial movement away from the back surface of the fender A. The combined movement of the first partial movement and the second partial movement constitutes the movement displacement path of the punch 10. In the above scheme, regarding the movement direction of the sliding wedge 20, the punch is arranged below and the recess is arranged above when the fender A is formed, and the fender A is placed in a flat posture between the punch and the recess during forming. The side where the missing part A' of the fender A is located is defined as the front end of the fender A, and the side close to the engine compartment when the fender A is installed is defined as the upper end of the fender A. The first segment movement of the punch 10 relative to the fender A causes the punch 10 to avoid the flanging at the upper edge A2 and the lower edge A1 of the corner panel A3. Since the included angle between the upper flanging A21 at the upper edge A2 and the lower flanging A11 at the lower edge A1 and the intersection of the corner panel A3 is an acute angle, the angle and distance of the first segment movement of the punch 10 need to be set according to the flanging included angle and length. After the above movement is completed, the fender A can be taken away by a robot, and no additional process is needed for smooth stripping.

[0032] In order to make it more convenient for the fender A to be stripped, as shown in Figure 6 ,Figure 10 As shown in the figure, the movement of the punch 10 relative to the fender A is a first segment movement and a second segment movement, the second segment movement of the punch 10 is towards the lower end of the fender A, and the end point of the first segment movement path constitutes the starting point of the second segment movement path. In actual production process, the first segment movement of the punch 10 relative to the fender A is at an acute angle with the horizontal plane, that is, the first segment movement of the punch 10 towards the rear end of the fender A is in the horizontal direction, and the second segment movement away from the back surface of the fender A is in the vertical downward direction. The second segment movement of the punch 10 relative to the fender A is in the horizontal direction and perpendicular to the first segment movement direction. The two segment movements of the punch 10 are consecutive and connected, and the second segment movement path avoids the lower flange A11 and the upper flange A21.

[0033] More specifically, the sliding wedge 20 is arranged on the inclined wedge seat 30, the inclined wedge seat 30 is installed on the base 40, and the sliding fit between the sliding wedge 20 and the inclined wedge seat 30 constitutes the first segment movement of the punch 10, and the sliding fit between the inclined wedge seat 30 and the base 40 constitutes the second segment movement of the punch 10. In the above-mentioned scheme, the sliding wedge 20 is installed on the inclined surface of the inclined wedge seat 30, the inclined surface is parallel to the first segment movement direction of the punch 10, and the sliding wedge 20 is fixedly connected with the punch 10, so the movement direction of the punch 10 is consistent with that of the sliding wedge 20. The inclined wedge seat 30 moves in the horizontal direction on the base 40, and when the inclined wedge seat 30 moves, the position of the sliding wedge 20 relative to the inclined wedge seat 30 remains unchanged, so the movement direction of the inclined wedge seat 30 is also consistent with that of the punch 10. In actual application, the base 40 is installed on the lower die for producing the fender A, and the punch 10 and the fender A are located between the upper die and the lower die. The upper die and the lower die of the present application are not shown in the figure.

[0034] Preferably, the inclined wedge seat 30 is in the shape of a wedge block, and a groove 31 for installing the sliding wedge 20 is arranged on the wedge surface of the inclined wedge seat 30, and the groove bottom surface 312 of the groove 31 constitutes the support surface for the sliding of the sliding wedge 20 relative to the inclined wedge seat 30.

[0035] The groove bottom surface of the groove 31 of the inclined wedge seat 30 is provided with a guide rail 32 in the shape of a trapezoidal or angular cross section, and the bottom of the sliding wedge 20 is provided with a sliding seat 21 matched with the trapezoidal or angular inclined surface of the guide rail 32, and the extension direction of the limiting surface of the guide rail 32 constitutes the movement displacement path of the first segment movement of the punch 10. The trapezoidal or angular guide rail 32 limits the movement direction of the sliding wedge 20 to be consistent with the length direction of the guide rail 32.

[0036] To reduce the motion friction between the sliding wedge 20 and the inclined wedge seat 30, support plates 34 are provided on both sides of the guide rail 32 on the bottom surface 312 of the groove 31 to support the sliding of the sliding wedge 20. The length direction of the support plate 34 is consistent with the direction of the first segment of the punch 10's movement. A first limiting block 35 is installed on the groove end wall at the top of the groove 31. The position where the first limiting block 35 abuts against the sliding wedge 20 is the starting position of the sliding wedge 20's movement path. In the above scheme, the first limiting block 35 can easily determine the starting point of the sliding wedge 20's movement and improve the positional accuracy of the sliding wedge 20.

[0037] In order to restrict the sliding wedge 20 from sliding along the guide rail 32, the upper wall of the two sides of the groove 31 is provided with a limiting plate 33 extending from the edge of the plate to the groove opening. The limiting plate 33 and the sliding wedge 20 form a limiting fit perpendicular to the wedge surface of the inclined wedge seat 30.

[0038] Preferably, the base 40 has a cavity 41 for mounting the wedge seat 30. The bottom surface 411 of the cavity 41 has a guide rail 42 that slides with the wedge seat 30 and a pad 44 that avoids the guide rail 42. The length direction of the guide rail 42 is consistent with the direction of the second movement of the punch 10. The cross-section of the guide rail 42 is trapezoidal or angular. The bottom of the wedge seat 30 has a guide seat 46 that matches the trapezoidal or angular inclined surface of the guide rail 42. The top 412 of the inner walls on both sides of the cavity 41 along the direction of the second movement has a second limiting plate 43 that extends from the edge of the plate towards the cavity opening of the cavity 41. The second limiting plate 43 and the wedge seat 30 form a limiting fit perpendicular to the bottom surface 411 of the cavity 41. The limiting plate 33, the second limiting plate 43 and the base 40 are all detachably connected. The cavity 41 and the second limiting plate 43 together define the movement path of the wedge seat 30.

[0039] like Figure 16 As shown, a cylinder 50 for driving the wedge seat 30 is provided on the base 40. The extension and retraction direction of the cylinder 50 is consistent with the direction of the second movement of the punch 10. Second limiting blocks 45 are installed on the inner walls of the cavity 41 at both ends of the movement path of the wedge seat 30. The second limiting blocks 45 limit the starting point and ending point of the movement of the wedge seat 30 on the base 40.

[0040] The overall working process of the fender forming mold is as follows: After the fender A is placed in the mold and the preparation stage is completed, the upper mold moves downward, the air circuit starts to work, the cylinder 50 pushes the inclined wedge seat 30 to move, causing the punch 10 to move to the starting position of the second stage of movement. The upper mold continues to move downward under the drive of the press, driving the sliding wedge block 20 to move, causing the punch 10 to move to the starting position of the first stage of movement. At this time, the punch 10 and the fender A plate are reshaped. The upper mold continues to move downward, and the pressure plate installed on the upper mold applies pressure to the punch 10. Then the forming cutter block of the mold completes the forming work of the upper flange A21 and the lower flange A11.

[0041] After the above forming process is finished, the pressure plate of the upper die is separated from the stamping part, the press drives the upper die to continue to go up, the sliding wedge 20 is driven to displace by the nitrogen spring, the punch 10 is driven to move, the punch 10 is displaced from the starting point of the first section movement to the end point of the first section movement, at this time, the forming surface at the top of the punch 10 avoids the upper turning edge A21 and the lower turning edge A11. The die continues to go up, is affected by the electronic cam, the gas circuit starts to work, the inclined wedge seat 30 is driven to move along the guide rail 42 by the cylinder 50, the punch 10 is displaced from the starting point of the second section movement to the end point of the second section movement, so that the punch 10 avoids the plate edge A4 of the wing panel A which extends towards the back surface direction of the top end of the wing panel A. At this time, the punch 10 completely avoids the wing panel A, the wing panel A can be directly taken away by the mechanical hand, and the whole process is finished.

Claims

1. A fender forming die characterized by: The punch (10) for forming the inner side panel of the angular panel (A3) abuts against the back of the angular panel (A3) and its top surface is consistent with the design surface of the angular panel (A3), the top surface edge of the punch (10) abuts against the inner side surface of the lower flange (A11) and the upper flange (A21) respectively, the bottom of the punch (10) is connected with the sliding wedge block (20), the first segment movement of the punch (10) relative to the fender (A) is limited by the sliding wedge block (20) and includes the first partial movement towards the rear end of the fender (A) and the second partial movement away from the back surface of the fender (A), the combined movement of the first partial movement and the second partial movement constitutes the movement displacement path of the punch (10); The movement of the punch (10) relative to the fender (A) is the first segment movement and the second segment movement which are connected in sequence, the second segment movement of the punch (10) is towards the lower end of the fender (A), the end point of the first segment movement path constitutes the starting point of the second segment movement path; The sliding wedge block (20) is arranged on the inclined wedge seat (30), the inclined wedge seat (30) is installed on the base (40), the sliding fit between the sliding wedge block (20) and the inclined wedge seat (30) constitutes the first segment movement of the punch (10), the sliding fit between the inclined wedge seat (30) and the base (40) constitutes the second segment movement of the punch (10); The upper front end of the fender (A) between the headlamp and the engine cover is the angular panel (A3) extending towards the vehicle head direction with an angular tip, the upper flange (A21) at the upper edge (A2) of the angular panel (A3) and / or the lower flange (A11) at the lower edge (A1) is located in the engine compartment; The included angle between the upper flange (A21) at the upper edge (A2) of the angular panel (A3) and the lower flange (A11) at the lower edge (A1) and the angular panel (A3) is an acute angle; The front ends of the upper flange (A21) and the lower flange (A11) are arranged in an intermittent manner; The lower flange (A11) is arranged on the upper edge of the lower edge (A1) of the fender (A) which constitutes the angular profile missing part A' containing the headlamp.

2. The fender forming die according to claim 1, characterized by: The inclined wedge seat (30) is in the shape of a wedge block, the wedge surface of the inclined wedge seat (30) is provided with a recess (31) for installing the sliding wedge block (20), the groove bottom surface (312) of the recess (31) constitutes the support surface of the sliding wedge block (20) relative to the inclined wedge seat (30).

3. The fender forming die according to claim 2, characterized by: The groove bottom surface of the recess (31) of the inclined wedge seat (30) is provided with a guide rail (32) in the shape of a trapezoidal or angular cross section, the bottom of the sliding wedge block (20) is provided with a sliding seat (21) which is matched with the trapezoidal or angular inclined surface of the guide rail (32), the extension direction of the limiting surface of the guide rail (32) constitutes the movement displacement path of the first segment movement of the punch (10).

4. The fender forming die according to claim 2, characterized by: The upper wall of the two side groove walls of the recess (31) is provided with a limiting plate (33) extending from the slot opening of the plate edge to the slot cavity, the limiting plate (33) and the sliding wedge block (20) constitute the limiting fit which is perpendicular to the direction of the wedge surface of the inclined wedge seat (30).

5. The fender forming die of claim 3, wherein: The two sides of the guide rail (32) of the groove bottom surface (312) of the groove (31) are provided with support plates (34) for supporting the sliding wedge (20) to slide, the length direction of the support plate (34) is consistent with the direction of the first section movement of the punch (10), the first limiting block (35) is installed on the groove end wall of the top of the groove (31), and the first limiting block (35) is in abutment with the sliding wedge (20) to be the starting position of the movement path of the sliding wedge (20).

6. The fender forming die of claim 1, wherein: The base (40) is provided with a recess cavity (41) for installing the inclined wedge seat (30), the bottom surface (411) of the recess cavity (41) is provided with a guide rail (42) in sliding cooperation with the inclined wedge seat (30) and a backing plate (44) arranged away from the guide rail (42), the length direction of the guide rail (42) is consistent with the direction of the second section movement of the punch (10), the cross section of the guide rail (42) is trapezoidal or angular, the bottom of the inclined wedge seat (30) is provided with a guide seat (46) matched with the trapezoidal or angular inclined surface of the guide rail (42), the top (412) of the two side inner walls of the recess cavity (41) in the second section movement direction is provided with a second limiting plate (43) extending to the recess cavity opening of the recess cavity (41), and the second limiting plate (43) is in limiting cooperation with the inclined wedge seat (30) in a direction perpendicular to the bottom surface (411) of the recess cavity (41).

7. The fender forming die of claim 6, wherein: The base (40) is provided with a gas cylinder (50) for driving the inclined wedge seat (30), the extension direction of the gas cylinder (50) is consistent with the direction of the second section movement of the punch (10), and the second limiting block (45) is installed on the inner wall of the recess cavity (41) at both ends of the movement path of the inclined wedge seat (30).

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