Double-folding movable material pressing structure for automobile trunk cover

Abstract

The utility model discloses a double-folding movable material pressing structure for an automobile trunk cover, which comprises a lower die holder, an upper die holder and a lower die holder, a female die block opposite to the male die block is elastically mounted at the bottom of the upper die base; the flanging cutter block is fixedly arranged at the bottom of the upper die base and attached to one side of the female die block, and the bottom face elevation of the flanging cutter block is higher than that of the female die block; the bearing block is elastically installed on the lower die base, the bearing block corresponds to the flanging cutter block in position, the shape of the top face of the bearing block is matched with the shape of the bottom face of the flanging cutter block, and the top face of the bearing block is flush with the top face of the male die block; the reverse edge folding cutter block is fixedly arranged on the lower die base and attached to the side, away from the male die block, of the bearing block, and the elevation of the top face of the reverse edge folding cutter block is lower than that of the top face of the bearing block. The stamping and flanging mechanism solves the problem that when an existing stamping and flanging mechanism for the rear box cover of the automobile conducts stamping and flanging on a plate, the plate is prone to wrinkling and cracking.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a double-fold movable pressing structure for a car trunk lid. Background Technology

[0002] The manufacturing process of car trunk lids involves a stamping and flanging process. Traditional stamping and flanging mechanisms directly flanging the sheet metal. Due to the deep flanging depth, the material feeding cannot be controlled, which can easily lead to problems such as wrinkling and cracking of the sheet metal. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a double-fold movable pressing structure for automobile trunk lids is provided to solve the problem that existing automobile trunk lid stamping and flanging mechanisms are prone to causing wrinkling and cracking of sheet metal during stamping and flanging.

[0004] To achieve the above objectives, a double-fold movable pressing structure for an automobile trunk lid is provided, comprising:

[0005] A lower die holder is used to install a worktable surface of a hydraulic press, and a protruding module is formed on the lower die holder;

[0006] The upper die holder is used to mount the slider of the hydraulic press. A concave module is elastically mounted on the bottom of the upper die holder. The concave module corresponds to the convex module in position. The shape of the bottom surface of the concave module is adapted to the shape of the top surface of the convex module.

[0007] A flanging blade is fixed to the bottom of the upper mold base and fits against one side of the concave module. The bottom surface elevation of the flanging blade is higher than the bottom surface elevation of the concave module.

[0008] The support block is elastically mounted on the lower mold base. The position of the support block corresponds to that of the flanging cutter block. The shape of the top surface of the support block is adapted to the shape of the bottom surface of the flanging cutter block. The top surface of the support block is flush with the top surface of the convex module.

[0009] A reverse folding blade is fixed to the lower mold base and fits against the side of the support block away from the convex module. The elevation of the top surface of the reverse folding blade is lower than the elevation of the top surface of the support block. After the sheet metal is placed on the convex module and the support block so that the side of the sheet metal extends above the reverse folding blade, the slider drives the upper mold base to press down. The convex module first presses against the sheet metal, and then the folding blade presses against the sheet metal to make the sheet metal fold downward. After the folding blade continues to press down, the reverse folding blade presses upward against the side of the sheet metal so that the side of the sheet metal retracts sequentially into the first gap between the reverse folding blade and the folding blade, the second gap between the folding blade and the support block, and the third gap between the folding blade and the convex module.

[0010] Furthermore, the concave module is elastically mounted to the upper mold base by a first spring.

[0011] Furthermore, a vertically arranged guide post is formed at the bottom of the upper mold base, and a guide hole is formed on the other side of the concave module, with the guide post sliding in the guide hole.

[0012] Furthermore, the support block is elastically mounted on the lower mold base by a second spring.

[0013] The beneficial effect of this utility model is that the double-fold movable pressing structure for automobile trunk lids uses a support block and a reverse folding blade block on the lower mold base to hold the sheet metal and slow down its rapid deformation, thus preventing the sheet metal from wrinkling and cracking during the downward folding process of the forming blade block, thereby improving the processing quality and pass rate of automobile trunk lids. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the double-fold movable pressing structure for a car trunk cover according to an embodiment of the present invention.

[0016] Figure 2 and Figure 3 This is a schematic diagram of the sheet metal flanging process according to an embodiment of the present invention. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Reference Figures 1 to 3 As shown, this utility model provides a double-fold movable pressing structure for a car trunk cover, including: a lower mold base 1, an upper mold base 2, a flanging blade block 3, a support block 4, and a reverse flanging blade block 5.

[0020] The lower die holder 1 is used to mount the hydraulic press's worktable. The upper die holder 2 is used to mount the hydraulic press's slide block. The hydraulic press's slide block drives the upper die holder to press downwards towards the lower die holder. The hydraulic press's slide block provides the driving force for the upper die holder to press downwards.

[0021] Specifically, a protruding module 11 is formed on the lower mold base 1. A recessed module 21 is elastically mounted on the bottom of the upper mold base 2. The recessed module 21 corresponds to the position of the protruding module 11.

[0022] The shape of the bottom surface 210 of the concave module 21 is adapted to the shape of the top surface 110 of the convex module 11. After the bottom surface 210 of the concave module 21 and the top surface 110 of the convex module 11 are attached, the shape of the gap formed between the bottom surface 210 of the concave module 21 and the top surface 110 of the convex module 11 is adapted to the shape of the trunk lid of the car.

[0023] See Figure 1 As shown, in a preferred embodiment, the recessed module 21 is elastically mounted on the upper mold base 2 by a first spring 211.

[0024] Continue reading Figure 1 As shown, a vertically arranged guide post 22 is formed at the bottom of the upper mold base 2. A guide hole is formed on the other side of the recessed module 21. The guide post 22 is slidably disposed in the guide hole.

[0025] The flanging cutter block 3 is fixed to the bottom of the upper mold base 2. In this embodiment, the concave module has two opposite sides. The flanging cutter block 3 is attached to one side of the concave module 21. The concave module can move vertically along the side of the flanging cutter block. The bottom surface 30 of the flanging cutter block 3 is higher than the bottom surface of the concave module 21.

[0026] The support block 4 is elastically mounted on the lower mold base 1. The support block 4 corresponds to the position of the flanging cutter block 3. The shape of the top surface 40 of the support block 4 matches the shape of the bottom surface of the flanging cutter block 3. The top surface of the support block 4 is flush with the top surface of the protruding module 11.

[0027] See Figure 1As shown, in a preferred embodiment, the support block 4 is elastically mounted on the lower mold base 1 by a second spring 41. The support block can move vertically along the side of the convex module. The top surface of the support block extends down along the top surface of the convex module.

[0028] The reverse folding blade 5 is fixed to the lower mold base 1. The reverse folding blade 5 is attached to the side of the support block 4 away from the protruding module 11. The elevation of the top surface of the reverse folding blade 5 is lower than the elevation of the top surface of the support block 4. The support block can move vertically along the side of the reverse folding blade.

[0029] Combination Figure 2 and Figure 3 As shown, when stamping and flanging the sheet metal 6 to form the trunk lid of a car, the sheet metal 6 is first placed on the punch module 11 and the support block 4 so that the side edge of the sheet metal 6 extends above the reverse flanging blade block 5. Then, the hydraulic press is started, and the slide of the hydraulic press drives the upper die base 2 to press down. The punch module 11 first presses against the sheet metal 6 (e.g., ...). Figure 2 (As shown in the figure), the flanging blade 3 presses against the sheet 6 to cause the sheet 6 to be turned downwards.

[0030] Continue pressing down on the flange blade 3 (as shown) Figure 3 After the state shown, the reverse folding blade 5 presses upward against the side of the sheet 6 so that the side of the sheet 6 is successively retracted into the first gap between the reverse folding blade 5 and the flanging blade 3, the second gap between the flanging blade 3 and the support block 4, and the third gap between the flanging blade 3 and the protruding module 11.

[0031] In this embodiment, the concave module is suspended inside the upper mold base by guide columns, a first spring is installed between the concave module and the upper mold base, an inner guide plate is installed on the side of the concave module, the upper mold base is locked to the upper slider of the hydraulic press, and the flanging blade is installed on the upper mold base.

[0032] The reverse folding blade is locked onto the lower die base. The side blocks of the lower die base are also locked onto the lower die base, closely attached to the reverse folding blade. The support block is installed on the lower die base, and the lower die base ejector spring is installed between the support block and the lower die base. When the upper slide of the hydraulic press moves downward, it drives the upper die base and the pressing material to move downward together. The concave die first contacts the lower die base, and as it continues to move downward, the folding blade presses against the support block. The side of the sheet metal is flipped up by the reverse folding blade and retracts into the first gap between the reverse folding blade, the support block, and the folding blade until the shaping action is completed. This process mainly controls the deformation speed of the sheet metal to prevent wrinkling and cracking.

[0033] The sheet metal is placed on the lower mold base, and the support block also contacts the sheet metal on the lower mold base. The concave module first presses the sheet metal on the lower mold base, and then the flanging blade contacts the sheet metal. After contacting the support block, it continues to move downward. At this time, the reverse folding blade folds the sheet metal in the opposite direction, that is, the sheet metal is sandwiched in the first gap between the reverse folding blade and the flanging blade. When it continues to move downward, the side of the sheet metal will separate from the reverse folding blade and the flanging blade, and then retract into the second gap between the flanging blade and the support block. When it continues to move downward, the sheet metal will separate from the second gap between the flanging blade and the support block and retract into the third gap between the flanging blade and the convex module, and finally the shaping of the sheet metal is completed.

[0034] This utility model discloses a double-fold movable pressing structure for automobile trunk lids. By setting a support block and a reverse folding blade block on the lower mold base to hold the sheet metal in place, it slows down the rapid deformation of the sheet metal and prevents the sheet metal from wrinkling and cracking during the downward folding process of the forming blade block. This improves the processing quality and pass rate of automobile trunk lids.

[0035] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A double-fold movable pressing structure for a car trunk lid, characterized in that, include: A lower die holder is used to install a worktable surface of a hydraulic press, and a protruding module is formed on the lower die holder; The upper die holder is used to mount the slider of the hydraulic press. A concave module is elastically mounted on the bottom of the upper die holder. The concave module corresponds to the convex module in position. The shape of the bottom surface of the concave module is adapted to the shape of the top surface of the convex module. A flanging blade is fixed to the bottom of the upper mold base and fits against one side of the concave module. The bottom surface elevation of the flanging blade is higher than the bottom surface elevation of the concave module. The support block is elastically mounted on the lower mold base. The position of the support block corresponds to that of the flanging cutter block. The shape of the top surface of the support block is adapted to the shape of the bottom surface of the flanging cutter block. The top surface of the support block is flush with the top surface of the convex module. A reverse folding blade is fixed to the lower mold base and fits against the side of the support block away from the convex module. The elevation of the top surface of the reverse folding blade is lower than the elevation of the top surface of the support block. After the sheet metal is placed on the convex module and the support block so that the side of the sheet metal extends above the reverse folding blade, the slider drives the upper mold base to press down. The convex module first presses against the sheet metal, and then the folding blade presses against the sheet metal to make the sheet metal fold downward. After the folding blade continues to press down, the reverse folding blade presses upward against the side of the sheet metal so that the side of the sheet metal retracts sequentially into the first gap between the reverse folding blade and the folding blade, the second gap between the folding blade and the support block, and the third gap between the folding blade and the convex module.

2. The double-fold movable pressing structure for a car trunk lid according to claim 1, characterized in that, The recessed module is elastically mounted to the upper mold base by a first spring.

3. The double-fold movable pressing structure for a car trunk lid according to claim 2, characterized in that, The bottom of the upper mold base has a vertically arranged guide post, and the other side of the concave module has a guide hole, in which the guide post slides.

4. The double-fold movable pressing structure for a car trunk lid according to claim 1, characterized in that, The support block is elastically mounted on the lower mold base by a second spring.

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