A mold structure for controlling the surface quality of fender wheel eyebrow

Abstract

The present invention discloses a mold structure for controlling the surface quality of fender wheel brows, comprising an upper mold body, a lower mold body, a pressing core, a punch structure, a side flanging insert and a positive flanging insert, wherein the pressing core is arranged at the lower part of the upper mold body, the punch structure is arranged on the lower mold body, a groove is arranged at the edge of the punch body corresponding to the side flanging insert, the side flanging insert is arranged on the upper mold body, and the positive flanging insert is arranged above the side flanging insert. The mold structure for controlling the surface quality of fender wheel brows is reasonably designed, can well control the surface quality of fender wheel brows, has a simple and compact structure, has a simple arrangement scheme, is easy to implement in the mold structure, and reduces manufacturing costs.

Description

Technical Field

[0001] The invention relates to the technical field of automobile mold structures, and in particular to a mold structure for controlling the surface quality of a fender wheel arch. Background Art

[0002] As one of the most important exterior covering parts of a car, the car fender is installed in a very important position on the car body. It is connected with many other parts such as the hood, front bumper, wheel arch, and side panel. It is the starting point of the side ridge line of the car body and is also the part that consumers pay attention to first when they see the car.

[0003] Due to the position matching characteristics of the fender parts on the car body and the complex shape of the parts, the fender parts have very high requirements for the A-surface accuracy and flute smoothness. If the surface accuracy of the fender wheel arch is poor and the flute line is not smooth, it is likely to affect the car assembly accuracy and even reduce the aesthetics of the whole vehicle.

[0004] For example, patent CN204603071U discloses a synchronous flanging device for the front and side of an automobile fender, which includes an upper die base and a lower die base, wherein the lower die base is provided with a lower die punch core, and the upper die base is provided with an upper die pressing core, and also includes a positive flanging device and a side flanging device; the positive flanging device includes a positive flanging knife block; the side flanging device includes a side driving block, a side sliding block, a side flanging knife block and a side sliding block base; the side driving block is connected to the upper die base; the side sliding block base is connected to the lower die base; one end of the side sliding block is provided with a side flanging knife block, and its structure is complex. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a mold structure for controlling the surface quality of a fender wheel arch, which can well control the surface quality of a fender wheel arch and has a simple and compact structure.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The mold structure for controlling the surface quality of the fender wheel eyebrow comprises an upper mold body, a lower mold body, a pressing core, a punch structure, a side flanging insert and a positive flanging insert, wherein the pressing core is arranged at the lower part of the upper mold body, the punch structure is arranged on the lower mold body, a groove is arranged at the edge of the punch body corresponding to the side flanging insert, the side flanging insert is arranged on the upper mold body, and the positive flanging insert is arranged above the side flanging insert.

[0008] Further:

[0009] The punch structure comprises a fixed punch and a movable punch, the movable punch is located outside the fixed punch, and the groove is arranged on the movable punch.

[0010] A nitrogen spring is arranged between the positive flanging insert and the upper die body.

[0011] The positive flange insert is located directly above the inner side of the inner edge of the side flange insert.

[0012] A driving structure is provided on the lower die body corresponding to the movable punch.

[0013] The side flanging insert is arranged at the lower part of the upper mold body through an inclined wedge structure.

[0014] The driving structure is a driving plate, one end of which cooperates with the inclined surface of the movable punch, and the other end of which corresponds to the inserting knife block arranged on the upper die body.

[0015] The lower die body is provided with a reset spring for resetting the movable punch.

[0016] The side flange insert is an L-shaped structure, one end of the side flange insert is fixed to the inclined wedge structure by a fastener, and a matching groove is provided on the upper part of the other end of the side flange insert, and the lower end of the positive flange insert matches the matching groove.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The mold structure for controlling the surface quality of the fender wheel eyebrow is reasonably designed, can well control the surface quality of the fender wheel eyebrow, has a simple and compact structure, has a simple arrangement scheme, is easy to implement, and reduces manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 Schematic diagram of the fender wheel arch area.

[0021] Figure 2 It is a schematic diagram of the cross section of the workpiece before and after flanging.

[0022] Figure 3 It is a schematic diagram of the mold structure of the present invention.

[0023] Figure 4 It is a partially enlarged schematic diagram of the mold structure of the present invention.

[0024] Figure 5 and Figure 6 It is a schematic diagram of a specific mold structure of the invention.

[0025] In the figure:

[0026] 1. Pressing core, 2. Fender component, 3. Side flanging insert, 4. Front flanging insert, 5. Support, 6. Upper die body, 7. Lower die body, 8. Driving structure, 9. Fixed punch, 10. Movable punch. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0028] like Figures 1 to 6 As shown, the mold structure for controlling the surface quality of the fender wheel eyebrow includes an upper mold body 6, a lower mold body 7, a pressing core 1, a punch structure, a side flanging insert 3 and a positive flanging insert 5; the pressing core 1 is arranged at the lower part of the upper mold body, the punch structure is arranged on the lower mold body, a groove is arranged on the edge of the punch body corresponding to the side flanging insert, the side flanging insert is arranged on the upper mold body, and the positive flanging insert is arranged above the side flanging insert.

[0029] The punch structure comprises a fixed punch 9 and a movable punch 10. The movable punch is located outside the fixed punch, the groove is arranged on the movable punch, and a driving structure 8 is arranged on the lower die body corresponding to the movable punch.

[0030] Furthermore, the driving structure is a driving plate, one end of which cooperates with the inclined surface of the movable punch, and the other end of the driving plate is arranged corresponding to the inserting knife block arranged on the upper mold body; a reset spring for resetting the movable punch is arranged on the lower mold body.

[0031] A slide plate is arranged on the lower die body corresponding to the driving plate, a transverse through hole is arranged at the lower part of the fixed punch, and the driving plate is arranged through the through hole, so the structure is compact.

[0032] The positive flanging insert is located just above the inner side of the inner edge of the side flanging insert; a nitrogen spring is arranged between the positive flanging insert and the upper die body.

[0033] The side flange insert is arranged on the inclined wedge structure, and the inclined wedge structure is arranged at the lower part of the upper mold body through the support 5; further, the side flange insert is an L-shaped structure, one end of the side flange insert is fixed to the inclined wedge structure by a fastener, and a matching groove is provided on the upper part of the other end of the side flange insert, and the lower end of the positive flange insert cooperates with the matching groove, and the integrated arrangement has a compact structure.

[0034] The product forming steps at the fender wheel arch generally go through four steps: drawing, trimming, positive flanging, and side flanging. For the side flanging process in the fourth step, the conventional results are prone to surface quality problems such as partial bulging deformation of the A surface and uneven ridges. This new process scheme is a composite flanging structure that combines the side flanging with the positive flanging in the side flanging process. After the side flanging at the wheel arch is completed, the ridge line and A surface defects are eliminated by the positive flanging. During the working process, the pressing core contacts the fender part 2 to provide a pressing force, and further the side flanging insert contacts the fender part and completes the side flanging work. During the side flanging process, the positive flanging insert contacts the fender part to start working, eliminating the ridge line and A surface defects at the fender wheel arch.

[0035] The present invention has a reasonable design of the mold structure for controlling the surface quality of the fender wheel eyebrow, and aims to solve the problem that if the surface quality of the fender wheel eyebrow is poor and the ridge line is not smooth, it is likely to affect the automobile assembly accuracy and even reduce the aesthetics of the whole vehicle. It can well control the surface quality of the fender wheel eyebrow, has a simple and compact structure, has a simple arrangement scheme, is easy to implement the mold structure, and reduces the manufacturing cost.

[0036] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0037] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A mold structure for controlling the surface quality of a fender wheel eyebrow, comprising an upper mold body, a lower mold body, a pressing core, a punch structure, a side flanging insert and a front flanging insert, wherein the pressing core is arranged at the lower part of the upper mold body, and the punch structure is arranged on the lower mold body, characterized in that: The edge of the male mold body is provided with a groove corresponding to the side flanging insert, the side flanging insert is arranged on the upper mold body, and the positive flanging insert is arranged above the side flanging insert.

2. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 1, characterized in that: The punch structure comprises a fixed punch and a movable punch, the movable punch is located outside the fixed punch, and the groove is arranged on the movable punch.

3. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 1, characterized in that: A nitrogen spring is arranged between the positive flanging insert and the upper die body.

4. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 1, characterized in that: The positive flange insert is located directly above the inner side of the inner edge of the side flange insert.

5. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 2, characterized in that: A driving structure is provided on the lower die body corresponding to the movable punch.

6. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 4, characterized in that: The side flanging insert is arranged at the lower part of the upper mold body through an inclined wedge structure.

7. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 5, characterized in that: The driving structure is a driving plate, one end of which cooperates with the inclined surface of the movable punch, and the other end of which corresponds to the inserting knife block arranged on the upper die body.

8. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 7, characterized in that: The lower die body is provided with a reset spring for resetting the movable punch.

9. The mold structure for controlling the surface quality of the fender wheel eyebrow according to claim 6, characterized in that: The side flange insert is an L-shaped structure, one end of the side flange insert is fixed to the inclined wedge structure by a fastener, and a matching groove is provided on the upper part of the other end of the side flange insert, and the lower end of the positive flange insert matches the matching groove.

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