Bumper beam flange shaping device and method

Abstract

The present application belongs to the technical field of flanging and shaping die, in particular to a bumper framework flanging and shaping device and method. The device comprises an upper die and a lower die. A material ejecting core is arranged on the lower die. A side wall flanging part for flanging the side wall of the bumper framework is arranged on the lower die. The side wall flanging part is vertically movably arranged on the lower die. A headlamp hole flanging part is integrally arranged on the side wall flanging part. A fog lamp hole flanging part for flanging the fog lamp hole of the bumper framework is arranged on the material ejecting core. The fog lamp hole flanging part is vertically movably arranged relative to the lower die and the material ejecting core. A first driving mechanism for driving the material ejecting core to move up and down is arranged on the lower part of the lower die. A second driving mechanism for driving the side wall flanging part to move up and down is arranged on the lower part of the lower die. The flanging and shaping device of the bumper framework has the material ejecting mode. The side wall flanging part and the fog lamp hole flanging part are retracted first. Compared with directly lifting the bumper framework, the flanging is not easy to be damaged and deformed during the retracting process, especially the flanging at the headlamp hole and the fog lamp hole is not easy to be damaged and deformed, thereby ensuring the flanging and shaping quality.

Description

Technical Field

[0001] This invention belongs to the field of flanging and shaping mold technology, and particularly relates to a flanging and shaping device and method for bumper frames. Background Technology

[0002] The front bumper of a car typically uses a flat, plate-like main crossbeam running through the front of the vehicle. For ease of forming and improved efficiency, it is often a one-piece stamped design. To facilitate the installation of the bumper, headlights, and other components, the bumper frame needs to be flanged and shaped. This flanging and shaping of the bumper frame is accomplished using flanging dies.

[0003] Existing flanging dies eject the bumper frame after it has been flanged using an ejector core. However, this method has the problem that the flanged part of the bumper frame is narrow and thin, and the flanged part is essentially stuck in the flanging section of the die. Ejecting the bumper frame directly can easily deform the flanged part of the bumper frame, affecting the flanging quality. Summary of the Invention

[0004] This invention addresses the problems existing in the current bumper frame flanging forming mold, and proposes the following technical solution:

[0005] A bumper frame flanging and shaping device includes an upper mold and a lower mold. A top core is provided on the lower mold, and the top core is vertically and movably mounted on the lower mold. Side flanging portions for flanging the bumper frame are provided at both ends of the top core, and these side flanging portions are vertically and movably mounted on the lower mold. The upper surface of the top core and the upper surface of the side flanging portions form a bumper frame flanging model. A headlight hole flanging portion for flanging the headlight holes of the bumper frame is integrally provided on the side flanging portions, and a fog light hole flanging portion for flanging the fog light holes of the bumper frame is provided on the top core. The fog light hole flanging portions are vertically and movably mounted relative to the lower mold and the top core. Its characteristic is that:

[0006] The lower part of the lower mold is provided with a first drive mechanism for raising and lowering the top core and a second drive mechanism for raising and lowering the side flange.

[0007] The material discharge method of the bumper frame flanging and shaping device of the present invention involves the side flanging and fog light flanging parts retracting first. Compared with directly lifting the bumper frame, the flanging is less likely to be damaged or deformed, especially reducing the damage and deformation of the flanging at the headlight hole and fog light hole, thus ensuring the quality of flanging and shaping.

[0008] As an improvement to the above technical solution, the bumper frame flanging and shaping device has a base frame at the lower part of the lower mold, and a cylinder is installed on the base frame, with the cylinder being vertically arranged.

[0009] The first driving mechanism includes a first crossbeam, which is located below the top material core, and the projection of the top material core in the vertical direction covers the projection of the first crossbeam in the vertical direction. The top end of the cylinder is connected to the first crossbeam, driving the first crossbeam to move in the vertical direction.

[0010] The second drive mechanism includes a second crossbeam located between the first crossbeam and the base frame. A first connecting block is provided between the second crossbeam and the side flange portion, and the second crossbeam and the side flange portion are fixedly connected by the first connecting block. A first through hole for a cylinder to pass through is provided on the second crossbeam. The top end of the cylinder passes through the first through hole and is connected to the first crossbeam. A first retaining ring is fixed to the part of the cylinder located between the first and second crossbeams. The outer diameter of the first retaining ring is larger than the diameter of the first through hole. A return spring is provided between the second crossbeam and the base frame. The cylinder has an initial state. When the cylinder is in the initial state, the upper surface of the top core and the upper surface of the side flange portion are joined to form a bumper frame flange model, which flanges the bumper frame. At this time, the spring is in a free extension and contraction state.

[0011] The raising of the first drive mechanism and the lowering of the second drive mechanism can be achieved by a single cylinder, simplifying the equipment structure and reducing costs.

[0012] As an improvement to the above technical solution, the bumper frame flanging shaping device has a second connecting block between the second cross frame and the fog light hole flanging part, and the second cross frame and the fog light hole flanging part are fixedly connected by the second connecting block.

[0013] The synchronous lifting and lowering of the side panel flange and the fog light hole flange avoids flange deformation caused by time errors in the retraction of the side panel flange and the fog light hole flange. Furthermore, the fog light hole flange does not require other mechanisms to drive it, simplifying the structure.

[0014] As an improvement to the above technical solution, the bumper frame flanging shaping device has a limiting member on the base frame. The limiting member has a horizontal part, and the horizontal part of the limiting member is located on the upper part of the second cross frame. When the upper end face of the second cross frame contacts the horizontal part of the limiting member, the upper surface of the top core and the upper surface of the side flanging part are joined to form a bumper frame flanging model.

[0015] By setting the limiting component, the rising height of the side flange is limited, so that when the side flange is at its highest position, it is exactly engaged with the top core, ensuring normal flange shaping operation.

[0016] As an improvement to the above technical solution, the bumper frame flanging and shaping device has a guide rod provided between the first cross frame and the base frame, and the guide rod is a free telescopic rod.

[0017] The guide rods improve the stability of the first crossbeam during lifting and reduce the possibility of edge deformation when the top material core pushes out the bumper frame.

[0018] As an improvement to the above technical solution, the bumper frame flanging and shaping device has a second through hole on the second crossbar for the guide rod to pass through. The top end of the guide rod passes through the second through hole and is fixedly connected to the first crossbar. A second retaining ring is provided on the part of the guide rod located between the first crossbar and the second crossbar. The first retaining ring and the second retaining ring have the same height, and the outer diameter of the second retaining ring is larger than the diameter of the second through hole.

[0019] When the cylinder drives the second crossbeam to descend through the first retaining ring, the second retaining ring also applies a downward force to the second crossbeam, improving the stability of the descent of the second crossbeam.

[0020] As an improvement to the above technical solution, the outer wall of the guide rod and the inner wall of the second through hole are seamlessly fitted in the bumper frame flanging and shaping device.

[0021] The cooperation between the guide rod and the second through hole serves to guide and position the lifting and lowering of both the first and second crossbeams, ensuring the accuracy of the positions of the top core, the side flange, and the fog light hole flange, thereby ensuring the flange shaping effect.

[0022] The above-mentioned bumper frame flanging shaping device includes the following steps:

[0023] S1 cylinder is in the initial position, and the side flange block and top material core fit together to form a bumper frame flange shaping model;

[0024] The S2 mold is placed on the lower mold, and the upper mold presses down to fold and shape the bumper frame.

[0025] After the S3 flanging is completed, the cylinder descends, which in turn causes the side flanging block and the fog light hole flanging block to descend, thus separating the side flanging block and the fog light hole flanging block.

[0026] The S4 cylinder rises, causing the top core to rise and pushing out the bumper frame after it has been shaped and flanged.

[0027] The S5 cylinder is reset to its initial position to begin the next bumper frame flanging and shaping process.

[0028] The beneficial effects of this invention are as follows:

[0029] (1) The discharge method of the bumper frame flanging and shaping device of the present invention is that the side flanging part and the fog light flanging part retract first. Compared with directly lifting the bumper frame, the flanging is not easily damaged or deformed. In particular, it reduces the damage and deformation of the flanging at the headlight hole and fog light hole, and ensures the flanging shaping quality.

[0030] (2) The synchronous lifting of the side flange 22 and the fog light hole flange 211 avoids the flange deformation problem caused by the time error of the side flange 22 and the fog light hole flange 211 retraction, and the fog light hole flange 211 does not need to be driven by other mechanisms, simplifying the structure.

[0031] (3) The cooperation of the guide rod and the second through hole not only guides and positions the lifting of the first cross frame, but also guides and positions the lifting of the second cross frame, ensuring the accuracy of the position of the top core, the side flange and the fog light hole flange, thereby ensuring the flange shaping effect. Attached Figure Description

[0032] Figure 1 The diagram shown is a structural schematic of the upper mold as a specific embodiment of the present invention;

[0033] Figure 2 The diagram shown is a structural schematic of the lower mold as a specific embodiment of the present invention;

[0034] Figure 3 The diagram shown is a structural schematic of the top material mechanism as a specific embodiment of the present invention;

[0035] Figure 4 The diagram shown is a schematic representation of the structure of the retaining ring according to a specific embodiment of the present invention.

[0036] Figure 5 The diagram shown is a schematic diagram of the connection between the second cross frame, the side flange, and the fog light hole flange, as a specific embodiment of the present invention.

[0037] Figure 6 The diagram shown is a schematic representation of the engagement between the guide rod 32 and the second through hole 412, which is a specific embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0039] Example 1

[0040] Figure 1 The diagram shown is a structural schematic of the upper mold as a specific embodiment of the present invention; Figure 2 The diagram shown is a structural schematic of the lower mold as a specific embodiment of the present invention; Figure 3 The diagram shown is a structural schematic of the top material mechanism as a specific embodiment of the present invention. Figure 1-3The bumper frame flanging and shaping device includes an upper mold 1 and a lower mold 2. The lower mold 2 is provided with a top core 21, which is vertically and movably mounted on the lower mold 2. The lower mold 2 is provided with side flanging portions 22 for flanging the side walls of the bumper frame at both ends of the top core 21. The side flanging portions 22 are vertically and movably mounted on the lower mold 2. The upper surface of the top core 21 and the upper surface of the side flanging portions 22 form a bumper frame flanging model. The side flanging portions 22 are integrally provided with headlight hole flanging portions 221 for flanging the headlight holes of the bumper frame. The top core 21 is provided with fog light hole flanging portions 211 for flanging the fog light holes of the bumper frame. The fog light hole flanging portions 211 are vertically and movably mounted relative to the lower mold 2 and the top core 21.

[0041] The lower part of the lower mold 2 is provided with a first drive mechanism 3 that drives the top core 21 to rise and fall, and a second drive mechanism 4 that drives the side flange part 22 to rise and fall.

[0042] The aforementioned device for shaping the flanging of a bumper frame allows the top core 21, side flanging portion 22, and fog light flanging portion 211 to all move vertically, whereas in traditional bumper frame shaping devices, only the top core 21 can move vertically. The advantage of this improvement in the present invention is that:

[0043] After the bumper frame is folded and shaped, the side flanging part 22 and the fog light flanging part 211 can move downwards to detach them from the bumper frame. Then, the top core 21 moves upwards to push the bumper frame out, thus unloading the bumper frame. In this unloading method, the side flanging part 22 and the fog light flanging part 211 first retract. Compared to directly lifting the bumper frame, the flanging is less prone to damage and deformation, especially reducing damage and deformation at the headlight and fog light holes, ensuring the quality of the flanging shaping.

[0044] As an improvement to the above technical solution, Figure 4 The diagram shown is a schematic representation of the retaining ring structure as a specific embodiment of the present invention. Figure 3 , 4 In the middle, a base frame 5 is provided at the lower part of the lower mold 2, and a cylinder 304 is provided on the base frame 5. The cylinder 304 is vertically arranged.

[0045] The first driving mechanism 3 includes a first crossbeam 31, which is located below the top material core 21. The projection of the top material core 21 in the vertical direction covers the projection of the first crossbeam 31 in the vertical direction. The top end of the cylinder 304 is connected to the first crossbeam 31, driving the first crossbeam 31 to move in the vertical direction.

[0046] The second drive mechanism 4 includes a second crossbeam 41, which is located between the first crossbeam 31 and the base frame 5. A first connecting block 42 is provided between the second crossbeam 41 and the side flange portion 22, and the second crossbeam 41 and the side flange portion 22 are fixedly connected by the first connecting block 42. The second crossbeam 41 is provided with a first through hole 411 through which a cylinder 304 passes. The top end of the cylinder 304 passes through the first through hole 411 and is connected to the first crossbeam 31. The cylinder 304 is located in the first... A first retaining ring 3041 is fixed between the cross frame 31 and the second cross frame 41. The outer diameter of the first retaining ring 3041 is larger than the diameter of the first through hole 411. A return spring 43 is provided between the second cross frame 41 and the base frame 5. The cylinder 304 has an initial state. When the cylinder 304 is in the initial state, the upper surface of the top core 21 and the upper surface of the side flange part 22 are joined to form a bumper frame flange model to flange the bumper frame. At this time, the spring 43 is in a free extension and retraction state.

[0047] The raising of the first drive mechanism 3 and the lowering of the second drive mechanism 4 can be achieved by a single cylinder 304, simplifying the equipment structure and reducing costs. Specifically, when the cylinder 304 lowers, it continues to lower when the first retaining ring 3041 contacts the upper surface of the second crossbeam 41, causing the second crossbeam 41 to lower and the side flange 22 to lower, thus disengaging the side flange 22 from the bumper frame. Then, the cylinder 304 rises, and when the upper surface of the first crossbeam 31 contacts the top material core 21, it continues to rise, causing the top material core 21 to rise and push out the bumper frame.

[0048] As an improvement to the above technical solution, Figure 5 The diagram shown is a schematic diagram of the connection between the second cross frame, the side flange, and the fog light hole flange, as a specific embodiment of the present invention. Figure 3 and Figure 5 In the middle, a second connecting block 44 is provided between the second cross frame 41 and the fog light hole flange 211, and the second cross frame 41 and the fog light hole flange 211 are fixedly connected by the second connecting block 44.

[0049] The second crossbeam 41 is fixedly connected to the fog light hole flange 211, so that the raising and lowering of the second crossbeam 41 can simultaneously drive the raising and lowering of the side flange 22 and the fog light hole flange 211, realizing the synchronous raising and lowering of the side flange 22 and the fog light hole flange 211. This avoids the flange deformation problem caused by the time error of the retraction of the side flange 22 and the fog light hole flange 211, and the fog light hole flange 211 does not require other mechanisms to drive it, simplifying the structure.

[0050] As an improvement to the above technical solution, see [link to relevant documentation]. Figure 3The base frame 5 is provided with a limiting member 45. The limiting member 45 has a horizontal part, and the horizontal part of the limiting member 45 is located above the second cross frame 41. When the upper end face of the second cross frame 41 and the horizontal part of the limiting member 45 are in contact, the upper surface of the top core 21 and the upper surface of the side flange part 22 are joined to form a bumper frame flange model.

[0051] By setting the limiting member 45, the rising height of the side flange 22 is limited, so that when the side flange 22 is at its highest position, it is just in contact with the top core 21, ensuring normal flange shaping operation.

[0052] As an improvement to the above technical solution, see [link to relevant documentation]. Figure 3 A guide rod 32 is provided between the first cross frame 31 and the base frame 5. The guide rod 32 is a free telescopic rod.

[0053] The guide rod 32 improves the stability of the first crossbeam 31 during lifting and lowering, and reduces the possibility of flange deformation when the top core 21 pushes out the bumper frame.

[0054] As an improvement to the above technical solution, see [link to relevant documentation]. Figure 4 The second crossbeam 41 is provided with a second through hole 412 for the guide rod 32 to pass through. The top end of the guide rod 32 passes through the second through hole 412 and is fixedly connected to the first crossbeam 31. The part of the guide rod 32 located between the first crossbeam 31 and the second crossbeam 41 is provided with a second retaining ring 321. The first retaining ring 3041 and the second retaining ring 321 have the same height. The outer diameter of the second retaining ring 321 is larger than the diameter of the second through hole 412.

[0055] When the cylinder 304 drives the second crossbeam 41 to descend via the first retaining ring 3041, the second retaining ring 321 also applies a downward force to the second crossbeam 41, improving the stability of the descent of the second crossbeam 41.

[0056] As an improvement to the above technical solution, Figure 6 The diagram shown is a schematic representation of the engagement between the guide rod 32 and the second through hole 412, which is a specific embodiment of the present invention. Figure 6 In this configuration, the outer wall of the guide rod 32 and the inner wall of the second through hole 412 fit together seamlessly.

[0057] The outer wall of the guide rod 32 and the inner wall of the second through hole 412 fit together seamlessly, so that the cooperation between the guide rod 32 and the second through hole 412 can guide and position the lifting and lowering of the first cross frame 31 and the second cross frame 41, ensuring the accuracy of the position of the top core 21, the side flange 22 and the fog light hole flange 211, thereby ensuring the flange shaping effect.

[0058] The bumper frame is easy to fold and reshape, and includes the following steps:

[0059] S1 cylinder 304 is in the initial position, and the side flange block 22 and the top material core 21 are fitted together to form a bumper frame flange shaping model.

[0060] S2 mold is placed on lower mold 2, and upper mold 1 is pressed down to fold and shape the bumper frame;

[0061] After the S3 flanging is completed, the cylinder 304 descends, which drives the side flanging block 22 and the fog light hole flanging block 211 to descend, so that the side flanging block 22 and the fog light hole flanging block 211 are disengaged.

[0062] S4 cylinder 304 rises, driving the top material core 21 to rise, pushing out the bumper frame after the edge is turned and shaped;

[0063] S5 cylinder 304 is reset to its initial position to proceed with the next bumper frame flanging and shaping.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A flanging and shaping method for a bumper frame flanging and shaping device, the bumper frame flanging and shaping device comprising an upper mold (1) and a lower mold (2), wherein a top core (21) is provided on the lower mold (2), the top core (21) is vertically and movably disposed on the lower mold (2), and side flanging portions (22) for flanging the side of the bumper frame are provided at both ends of the top core (21), the side flanging portions (22) being vertically and movably disposed on the lower mold (2). The upper surface of the top core (21) and the upper surface of the side flange (22) form a bumper frame flange model; the side flange (22) is integrally provided with a headlight hole flange (221) for flanged bumper frame headlight holes, and the top core (21) is provided with a fog light hole flange (211) for flanged bumper frame fog light holes, and the fog light hole flange (211) is vertically movable relative to the lower mold (2) and the top core (21); its characteristic is: The lower part of the lower mold (2) is provided with a first drive mechanism (3) for driving the top core (21) to rise and fall, and a second drive mechanism (4) for driving the side flange (22) to rise and fall. The lower mold (2) is provided with a base frame (5) at its lower part, and a cylinder (304) is provided on the base frame (5). The cylinder (304) is vertically arranged. The first drive mechanism (3) includes a first crossbeam (31), which is located at the lower part of the top material core (21), and the projection of the top material core (21) in the vertical direction covers the projection of the first crossbeam (31) in the vertical direction. The top end of the cylinder (304) is connected to the first crossbeam (31) to drive the first crossbeam (31) to move in the vertical direction. The second drive mechanism (4) includes a second crossbeam (41), which is located between the first crossbeam (31) and the base frame (5). A first connecting block (42) is provided between the second crossbeam (41) and the side flange (22), and the second crossbeam (41) and the side flange (22) are fixedly connected by the first connecting block (42). A first through hole (411) for the cylinder (304) to pass through is provided on the second crossbeam (411), and the top end of the cylinder (304) passes through the first through hole (411) and is connected to the first crossbeam (31). A first retaining ring (3041) is fixed between the first cross frame (31) and the second cross frame (41). The outer diameter of the first retaining ring (3041) is larger than the diameter of the first through hole (411). A reset spring (43) is provided between the second cross frame (41) and the base frame (5). The cylinder (304) has an initial state. When the cylinder (304) is in the initial state, the upper surface of the top core (21) and the upper surface of the side flange (22) are joined to form a bumper frame flange model to flange the bumper frame. At this time, the spring (43) is in a free extension and retraction state. The flanging and shaping method includes the following steps: S1: The cylinder (304) is in the initial position, and the side flange (22) and the top core (21) fit together to form a bumper frame flange shaping model; S2: The mold is placed on the lower mold (2), and the upper mold (1) is pressed down to fold and shape the bumper frame; S3: After the flanging is completed, the cylinder (304) descends, causing the side flanging part (22) and the fog light hole flanging part (211) to descend, so that the side flanging part (22) and the fog light hole flanging part (211) are separated; S4: The cylinder (304) rises, driving the top material core (21) to rise, pushing out the bumper frame after the flanging and shaping; S5: The cylinder (304) is reset to its initial position to perform the next bumper frame flanging and shaping.

2. The flanging and shaping method of the bumper frame flanging and shaping device according to claim 1, characterized in that: A second connecting block (44) is provided between the second cross frame (41) and the fog light hole flange (211), and the second cross frame (41) and the fog light hole flange (211) are fixedly connected by the second connecting block (44).

3. The flanging and shaping method of the bumper frame flanging and shaping device according to claim 2, characterized in that: The base frame (5) is provided with a limiting member (45), the limiting member (45) has a horizontal part, and the horizontal part of the limiting member (45) is located on the upper part of the second cross frame (41). When the upper end face of the second cross frame (41) and the horizontal part of the limiting member (45) are in contact, the upper surface of the top core (21) and the upper surface of the side flange part (22) are joined to form a bumper frame flange model.

4. The flanging and shaping method of the bumper frame flanging and shaping device according to claim 3, characterized in that: A guide rod (32) is provided between the first cross frame (31) and the base frame (5), and the guide rod (32) is a free telescopic rod.

5. The flanging and shaping method of the bumper frame flanging and shaping device according to claim 4, characterized in that: The second crossbar (41) is provided with a second through hole (412) through which the guide rod (32) passes. The top end of the guide rod (32) passes through the second through hole (412) and is fixedly connected to the first crossbar (31). The part of the guide rod (32) located between the first crossbar (31) and the second crossbar (41) is provided with a second retaining ring (321). The first retaining ring (3041) and the second retaining ring (321) have the same height. The outer diameter of the second retaining ring (321) is larger than the diameter of the second through hole (412).

6. The flanging and shaping method of the bumper frame flanging and shaping device according to claim 5, characterized in that: The outer wall of the guide rod (32) and the inner wall of the second through hole (412) fit together seamlessly.

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