Inner edge covering mechanism for door frame of vehicle door
By combining the pre-flipped inserts and the combined dead inserts into an integrated insert, the upper mold pre-flipped drive and the closed top rod can achieve the inner and outer plate edge wrapping of the car door frame, solving the problem that traditional molds cannot close the edges in the narrow door frame, and achieving the edge wrapping operation of the narrow door frame.
Patent Information
- Application Number
- CN202422404395.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The traditional edge wrapping mold has insufficient space in the door frame of the car, and the standard pre-turning mechanism cannot be arranged, resulting in the narrow door frame being unable to perform edge closing operation.
A vehicle door frame inner edge-covering mechanism is designed, and the pre-flip insert and the combined insert are combined into an integrated insert. The pre-flip integrated insert is driven by the upper mold pre-flip drive to pre-flip the flip surface of the outer plate, and the upper mold clamping rod is used to crush it to achieve the edge wrapping of the inner and outer plates.
Save mold installation space and can perform edge closure operations in narrow door frames. The structure is simple, which solves the problem that traditional molds cannot install edge closure mechanisms in narrow door frames.
Smart Images
Figure CN223129153U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of automobile molds, and particularly relates to an inner hemming mechanism for a car door frame. Background Technique
[0002] In the process of automobile body manufacturing, the hemming process for opening and closing parts such as four doors and two hoods is essential. Currently, the commonly used hemming forms include stamping die hemming, robot rolling hemming, and special hemming machines. Due to its high hemming quality and fast efficiency, the hemming die is widely used by major vehicle manufacturers.
[0003] With the continuous improvement of people's aesthetic vision, the shape of automobiles is becoming more and more beautiful. As an essential main exterior part of an automobile, the shape of the car door is also becoming more and more special, which makes the manufacturing difficulty greater and greater. The hemming form at the position of the car door frame has always been a manufacturing difficulty. The present invention solves the manufacturing difficulty of hemming the car door frame by applying an innovative hemming mechanism on the hemming die.
[0004] The working principle of the traditional hemming die is to drive the pre - flipping insert to pre - flip the outer panel to a certain angle (generally about 40 degrees) through a standard pre - flipping mechanism, and then use the pressing insert of the upper die to press the pre - flipped surface of the outer panel in place, and finally achieve the effect of hemming the inner and outer panels.
[0005] The traditional hemming form occupies a large space. Most car doors have door frames, resulting in insufficient space at the door frame position and unable to arrange a standard pre - flipping mechanism, as shown in Figure 4 shown.
[0006] If the inner panel of the car door blocks the hemming area of the outer panel in the Z - direction under the stamping direction of hemming, the traditional hemming form cannot be closed, as shown in Figure 5 shown. Content of the Utility Model
[0007] In view of this, the present utility model aims to provide an inner hemming mechanism for a car door frame to solve at least one technical problem in the background technique.
[0008] To achieve the above object, the technical solution of the present utility model is realized as follows:
[0009] The inner hemming mechanism for a car door frame includes a pre - flipping driver, an upper die closing ejector rod, a first pre - flipping assembly, a second pre - flipping assembly, and a connecting assembly; the pre - flipping driver and the upper die closing ejector rod are arranged on the upper die and can move up and down with the upper die; the connecting assembly is arranged on the lower die, and the first pre - flipping assembly and the second pre - flipping assembly are arranged on both sides of the connecting assembly; the first pre - flipping assembly, the connecting assembly, and the second pre - flipping assembly are arranged between the lower dies; the pre - flipping driver can move downward with the upper die and can make the first pre - flipping assembly and the second pre - flipping assembly move outward.
[0010] Further, both the first pre - turning assembly and the second pre - turning assembly include a pre - turning body, a first driving wedge guide plate, and a guide block; the first driving wedge guide plate is arranged on one side of the pre - turning body close to the connecting assembly, and a groove is provided on the other side, and a guide block is arranged in the groove; a pre - turning pressing integrated insert is arranged on the guide block; the bottom of the pre - turning pressing integrated insert corresponds to the corresponding lower die.
[0011] Further, a second driving wedge guide plate corresponding to the first pre - turning assembly or the second pre - turning assembly respectively is provided at the bottom of the pre - turning driver.
[0012] Further, a guide post is provided in the groove; a guide sleeve corresponding to the guide post is provided at the bottom of the guide block, and the guide block can move up and down along the guide sleeve.
[0013] Further, a guide sleeve is provided in the groove; a first flat guide plate corresponding to one side of the guide block is provided in the groove of the pre - turning body, and the guide block can move up and down along the first flat guide plate.
[0014] Further, the connecting assembly includes a connecting base and a nitrogen spring.
[0015] Both sides of the connecting base are connected to the first pre - turning assembly and the second pre - turning assembly respectively through nitrogen springs, and the connecting base is arranged on the lower die.
[0016] Further, second flat guide plates and third flat guide plates are provided on both sides of the connecting base.
[0017] The second flat guide plate corresponds to the bottom of the first pre - turning assembly.
[0018] The third flat guide plate corresponds to the bottom of the second pre - turning assembly.
[0019] Compared with the prior art, the door frame inner hemming mechanism of the present utility model has the following advantages: in this application, the pre - turning insert and the hemming insert are combined into an integrated insert. The pre - turning driver on the upper die drives the non - standard mechanism to pre - turn the outer panel flanging surface with the pre - turning hemming integrated insert. After the pre - turning is completed, the hemming ejector rod on the upper die presses on the upper surface of the pre - turning hemming integrated insert, so that the pre - turning pressing integrated insert presses the pre - turned outer panel to death, and finally the effect of hemming the inner and outer panels is achieved.
[0020] This application saves the die installation space, solves the problem that the hemming mechanism cannot be installed inside the ultra - narrow door frame, can hem the narrow door frame, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0022] Figure 1 Schematic diagram of the initial state of the inner edge wrapping mechanism of the car door frame according to an embodiment of the present invention;
[0023] Figure 2 Schematic diagram of the working state of the inner edge wrapping mechanism of the car door frame according to an embodiment of the present invention;
[0024] Figure 3 Schematic diagram of a water cut in the prior art;
[0025] Figure 4 Schematic diagram of the situation where the standard pre-flipping mechanism cannot be arranged due to the too small door frame;
[0026] Figure 5 Schematic diagram of the situation where the water cut edge wrapping area is blocked by the inner panel in the edge wrapping stamping direction;
[0027] Explanation of reference numerals:
[0028] 1. Pre-flipping body; 2. First driving wedge guide plate; 3. Guide block; 4. Pre-flipping and pressing integrated insert; 5. Lower die; 6. Second driving wedge guide plate; 7. Guide sleeve; 8. Guide pillar; 9. Groove; 10. First flat guide plate; 11. Connection base; 12. Nitrogen spring; 13. Second flat guide plate; 14. Third flat guide plate; 15. Outer panel; 16. Inner panel; 16. Pre-flipping driver; 17. Upper die closing ejector rod. Detailed implementation manners
[0029] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.
[0030] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.
[0031] As Figures 1 to 2 shown, the inner edge wrapping mechanism of the car door frame includes a pre-flipping driver 16, an upper die closing ejector rod 17, a first pre-flipping assembly, a second pre-flipping assembly, and a connection assembly; the pre-flipping driver 16 and the upper die closing ejector rod 17 are arranged on the upper die and can move up and down with the upper die; the connection assembly is arranged on the lower die 5, and the first pre-flipping assembly and the second pre-flipping assembly are arranged on both sides of the connection assembly; the first pre-flipping assembly, the connection assembly, and the second pre-flipping assembly are arranged between the lower dies 5; the pre-flipping driver 16 can move downward with the upper die and can make the first pre-flipping assembly and the second pre-flipping assembly move outward.
[0032] Either the first pre - turning component or the second pre - turning component includes a pre - turning body 1, a first driving wedge guide plate 2, and a guide block 3. The first driving wedge guide plate 2 is arranged on one side of the pre - turning body 1 close to the connecting component, and a groove 9 is provided on the other side. A guide block 3 is arranged in the groove 9. A pre - turning pressing integrated insert 4 is arranged on the guide block 3. The bottom of the pre - turning pressing integrated insert 4 corresponds to the corresponding lower die 5.
[0033] The bottom of the pre - turning driver 16 is provided with a second driving wedge guide plate 6 corresponding to the first pre - turning component or the second pre - turning component respectively. A guide post 8 is arranged in the groove 9. The bottom of the guide block 3 is provided with a guide sleeve 7 corresponding to the guide post 8, and the guide block 3 can move up and down along the guide sleeve 7.
[0034] A guide sleeve 7 is arranged in the groove 9. A first flat guide plate 10 corresponding to one side of the guide block 3 is arranged in the groove 9 of the pre - turning body 1, and the guide block 3 can move up and down along the first flat guide plate 10.
[0035] The connecting component includes a connecting base 11 and a nitrogen spring 12. Both sides of the connecting base 11 are connected to the first pre - turning component and the second pre - turning component respectively through the nitrogen spring 12, and the connecting base 11 is arranged on the lower die 5.
[0036] Second flat guide plates 13 and third flat guide plates 14 are arranged on both sides of the connecting base 11. The second flat guide plate 13 corresponds to the bottom of the first pre - turning component; the third flat guide plate 14 corresponds to the bottom of the second pre - turning component.
[0037] In a specific implementation, the upper die closing ejector rod 17 includes a first upper die closing ejector rod 17 and a second upper die closing ejector rod 17. The height of the first upper die closing ejector rod 17 corresponds to the pre - turning pressing integrated insert 4 on the first pre - turning component, and the height of the second upper die closing ejector rod 17 corresponds to the pre - turning pressing integrated insert 4 on the second pre - turning component.
[0038] In a specific implementation, when the upper die drives the pre - turning driver 16 and the upper die closing ejector rod 17 to move downward, the first pre - turning component and the second pre - turning component move outward. At this time, the position of the first upper die closing ejector rod 17 is above the pre - turning pressing integrated insert 4 on the first pre - turning component, and the position of the second upper die closing ejector rod 17 is above the pre - turning pressing integrated insert 4 on the second pre - turning component.
[0039] In a specific implementation, one side of the nitrogen spring 12 is movably connected to the connecting base 11, and the other side is movably connected to the pre - turning body 1.
[0040] In a specific implementation, when the upper die drives the pre - turning driver 16 and the upper die closing ejector rod 17 to move downward, the first pre - turning component and the second pre - turning component move outward and cooperate with the lower die 5 to make the hemming of the outer panel 15 form a 40° angle. At this time, the second driving wedge guide plate 6 moves downward along the first driving wedge guide plate 2.
[0041] The first pre-flipping component and the second pre-flipping component move along the second flat guide plate 13 and the third flat guide plate 14 respectively; the nitrogen spring 12 is in a stretched state;
[0042] The pre-flipping driver 16 continues to move downward, and the first upper die closing and dead stop rod 17 abuts against the pre-flipping and press-fitting integrated insert 4 of the first pre-flipping component, and the second upper die closing and dead stop rod 17 abuts against the pre-flipping and press-fitting integrated insert 4 of the second pre-flipping component. At this time, hemming can be achieved.
[0043] This project is the output of the project of the central government guiding local science and technology development funds, and the project number is 246Z1010G.
[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
Claims
1. Inner edge wrapping mechanism for vehicle door frame, characterized in that: It includes a pre-flipping driver, an upper die clamping dead rod, a first pre-flipping component, a second pre-flipping component, and a connecting component; The pre-flipping driver and the upper die clamping dead rod are arranged on the upper die and can move up and down with the upper die; The connecting component is arranged on the lower die, and the first pre-flipping component and the second pre-flipping component are arranged on both sides of the connecting component; the first pre-flipping component, the connecting component, and the second pre-flipping component are arranged between the lower dies; The pre-flipping driver can move downward with the upper die and can make the first pre-flipping component and the second pre-flipping component move outward.
2. The inner edge wrapping mechanism of the car door frame according to claim 1, characterized in that: Both the first pre-flipping component and the second pre-flipping component include a pre-flipping body, a first driving wedge guide plate, and a guide block; the first driving wedge guide plate is arranged on one side of the pre-flipping body close to the connecting component, and a groove is provided on the other side, and a guide block is arranged in the groove; a pre-flipping press-fitting integral insert is arranged on the guide block; the bottom of the pre-flipping press-fitting integral insert corresponds to the corresponding lower die.
3. The inner hemming mechanism of the vehicle door frame according to claim 1, wherein: The bottom of the pre-flipping driver is provided with second driving wedge guide plates corresponding to the first pre-flipping component and the second pre-flipping component respectively.
4. The inner edge wrapping mechanism of the car door frame according to claim 2, characterized in that: A guide post is arranged in the groove; a guide sleeve corresponding to the guide post is arranged at the bottom of the guide block, and the guide block can move up and down along the guide sleeve.
5. The inner edge wrapping mechanism of the car door frame according to claim 2, characterized in that: A guide sleeve is arranged in the groove; a first flat guide plate corresponding to one side of the guide block is arranged in the groove of the pre-flipping body, and the guide block can move up and down along the first flat guide plate.
6. The inner edge wrapping mechanism of the car door frame according to claim 1, characterized in that: The connecting component includes a connecting base and a nitrogen spring; Both sides of the connecting base are connected to the first pre-flipping component and the second pre-flipping component through nitrogen springs respectively, and the connecting base is arranged on the lower die.
7. The inner edge wrapping mechanism of the vehicle door frame according to claim 6, wherein: Second flat guide plates and third flat guide plates are arranged on both sides of the connecting base, The second flat guide plate corresponds to the bottom of the first pre-flipping component; The third flat guide plate corresponds to the bottom of the second pre-flipping component.