Flanging die for vehicle door edge

Abstract

The utility model provides a flanging die for an automobile door edge, and relates to the technical field of automobile manufacturing equipment. The telescopic rods are fixedly connected to the upper end of the lower die base; the limiting plates are fixedly connected to the output ends of the telescopic rods; the first convex blocks are fixedly connected to the upper ends of the limiting plates; the first springs are connected to the circumferential surfaces of the output ends of the telescopic rods in a sleeving manner; through the arrangement of matched connection structures of the first cross-shaped block and the first cross-shaped groove, the second cross-shaped block and the second cross-shaped groove, the fourth convex block and the first notch and the like, rapid positioning and stable connection between the vehicle door flanging male die and the lower die base and between the vehicle door flanging female die and the upper die base are achieved. And meanwhile, the assembling efficiency is further improved through cooperation of the third protruding block and the fourth notch.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing equipment technology, and in particular to a flanging mold for the edge of a car door. Background Technology

[0002] In modern automobile manufacturing, the quality of the edge treatment of car doors, as an important component of the vehicle body, directly affects the overall aesthetics and assembly precision of the vehicle. To enhance the structural strength and sealing performance of the door edges, a flanging process is typically required. Therefore, flanging dies, as key process equipment, play a crucial role in the production process.

[0003] Currently, there are various devices and technologies available on the market for flanging forming of car door edges. Traditionally, this type of work may have been accomplished using simple machine tools or basic stamping equipment. While these methods can meet certain production needs, the automotive industry's ever-increasing demands for product quality have created higher requirements for improved processing efficiency, guaranteed processing accuracy, and increased operational flexibility.

[0004] For example, traditional flanging dies often rely on bolts or other fixing methods to connect the upper and lower dies. While this method provides a certain degree of stability, frequent die changes become cumbersome and time-consuming when dealing with different vehicle models and flanging profile requirements. Furthermore, the positioning and guiding accuracy during the flanging process directly affects the quality of the final product. Inaccurate guidance or significant positioning deviations can lead to unstable flanging dimensions, decreased surface quality, and even die damage.

[0005] To address the aforementioned issues, a flanging mold for the edge of a car door is now designed. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a flanging mold for the edge of a car door, thereby solving the above-mentioned technical problems.

[0007] This utility model provides a flanging mold for the edge of a car door, comprising:

[0008] Lower mold base;

[0009] At least one set of telescopic rods, the telescopic rods being fixedly connected to the upper end of the lower mold base;

[0010] At least one set of limiting plates, wherein the limiting plates are fixedly connected to the output end of the telescopic rod;

[0011] At least one set of first protrusions, the first protrusions being fixedly connected to the upper end of the limiting plate;

[0012] At least one set of first springs, wherein the first springs are sleeved and connected to the circumferential surface of the output end of the telescopic rod;

[0013] A door flanging punch, wherein the door flanging punch is connected to the upper end of the lower die base;

[0014] An upper mold base, wherein the upper mold base is disposed at the upper end of the lower mold base;

[0015] At least one set of third recesses, the third recesses being opened at the lower end of the upper mold base, the third recesses matching the first protrusion;

[0016] A door flanging die, wherein the door flanging die is connected to the lower end of the upper die holder.

[0017] Preferably, the lower mold base has a first cross groove at its upper end, and the lower end of the door flanging punch is fixedly connected to a first cross block, which matches the first cross groove; the upper mold base has a second cross groove at its lower end, and the upper end of the door flanging die is fixedly connected to a second cross block, which matches the second cross groove.

[0018] Preferably, a second protrusion is fixedly connected to the upper end of the lower mold base, and a second recess is provided at the lower end of the door flanging punch. The second recess matches the second protrusion, and a second spring is sleeved and connected inside the second recess.

[0019] Preferably, a third protrusion is fixedly connected to the upper end of the upper mold base, and a fourth recess is provided at the lower end of the door flange die, the fourth recess matching the third protrusion.

[0020] Preferably, the side end of the door flanging punch is provided with a slot and a limiting opening, and the side end of the door flanging die is connected to a limiting block, which matches the slot and the limiting opening.

[0021] Preferably, the upper end of the door flanging punch has a first recess, and the upper end of the door flanging die is fixedly connected to a fourth protrusion, which matches the first recess; the upper end of the door flanging punch has a flanging convex surface feature, and the upper end of the door flanging die has a flanging concave surface feature, which matches the flanging convex surface feature.

[0022] Compared with related technologies, the flanging mold for car door edges provided by this utility model has the following beneficial effects:

[0023] 1. This utility model achieves rapid positioning and stable connection between the door flanging punch and the lower die base, and between the door flanging die and the upper die base, by setting matching connection structures such as the first cross block and the first cross groove, the second cross block and the second cross groove, and the fourth protrusion and the first recess. Meanwhile, the cooperation between the third protrusion and the fourth recess further improves assembly efficiency. The above structural design not only simplifies the mold installation steps but also facilitates the rapid replacement of punch and die components of different specifications according to different processing requirements, thereby significantly improving the equipment's adaptability in multi-variety production environments.

[0024] 2. This utility model incorporates a guiding structure within the mold, featuring a limiting block that engages with a bayonet and a limiting opening. This ensures accurate alignment of the upper and lower molds before closing, preventing workpiece deformation or mold damage due to misalignment. Furthermore, the matching structure of the first protrusion and the third recess provides auxiliary positioning during mold closure, while the precise fit between the flanged convex and concave features guarantees the consistency of the flanged contour and surface quality. Combined with the buffer design of the telescopic rod and the first spring, the impact force during stamping is effectively absorbed, improving the stability and service life of the mold. Attached Figure Description

[0025] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this application;

[0026] Figure 2 An exploded view diagram provided for an embodiment of this application;

[0027] Figure 3 Provided for the embodiments of this application Figure 2 Exploded 3D view of the upper and middle mold base;

[0028] Figure 4 Provided for the embodiments of this application Figure 2 Exploded 3D view of the flange die of the CRRC door;

[0029] Figure 5 Provided for the embodiments of this application Figure 4 Enlarged view of the flange punch at the CRRC door;

[0030] Figure 6 Provided for the embodiments of this application Figure 3 Enlarged view of the flange die of the CRRC door.

[0031] In the diagram: 1. Lower mold base; 101. Telescopic rod; 102. Limiting plate; 103. First protrusion; 104. First spring; 105. First cross groove; 106. Second protrusion; 107. Door flanging punch; 108. First recess; 109. Flanging convex surface feature; 110. Bayonet; 111. Limiting opening; 112. Second recess; 113. Second spring; 114. First cross block; 2. Upper mold base; 201. Third recess; 202. Third protrusion; 203. Second cross groove; 204. Door flanging concave die; 205. Fourth protrusion; 206. Flanging concave surface feature; 207. Bayonet; 208. Limiting block; 209. Fourth recess; 210. Second cross block. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Please refer to the following: Figures 1 to 6 A flanging die for car door edges, comprising:

[0034] Lower mold base 1;

[0035] At least one set of telescopic rods 101 are fixedly connected to the upper end of the lower mold base 1;

[0036] At least one set of limiting plates 102, the limiting plates 102 being fixedly connected to the output end of the telescopic rod 101;

[0037] At least one set of first protrusions 103, the first protrusions 103 being fixedly connected to the upper end of the limiting plate 102;

[0038] At least one set of first springs 104 are sleeved and connected to the circumferential surface of the output end of the telescopic rod 101;

[0039] Door flanging punch 107 is connected to the upper end of the lower die base 1;

[0040] Upper mold base 2 is located at the upper end of lower mold base 1;

[0041] At least one set of third recesses 201 are provided at the lower end of the upper mold base 2, and the third recesses 201 are matched with the first protrusion 103.

[0042] The door flanging die 204 is connected to the lower end of the upper die base 2.

[0043] In the specific implementation process, when it is necessary to perform flanging processing on the edge of the car door, the car door panel material to be processed is first placed on the car door flanging punch 107 on the lower mold base 1; at this time, the car door flanging die 204 is located at the lower end of the upper mold base 2 and forms a relative position with the car door flanging punch 107.

[0044] In this way, the upper mold base 2 moves downward, causing the door flanging die 204 to gradually approach and contact the door panel material, and begin to apply pressure to achieve the flanging forming operation.

[0045] As the upper mold base 2 continues to descend, the third notch 201 at its lower end matches and gradually engages with the first protrusion 103 fixed at the upper end of the limiting plate 102; at the same time, the telescopic rod 101 is compressed by the pressure from the upper mold base 2, causing the limiting plate 102 to move downward.

[0046] In this way, the first spring 104 is compressed and stores elastic potential energy, providing restoring force for the subsequent reset action; at the same time, the movement of the limiting plate 102 also plays an auxiliary positioning and buffering role, ensuring that the force is uniform and stable during the flanging process.

[0047] After the door flanging die 204 and the door flanging punch 107 are closed, the edge of the door is subjected to precisely controlled extrusion pressure between the two, thereby achieving high-quality flanging. During this process, the mating surfaces between the door flanging die 204 and the door flanging punch 107, such as the flanging concave feature 206 and the flanging convex feature 109, fit tightly together, ensuring the consistency and precision of the flanging shape.

[0048] Thus, after the flanging process is completed, the upper mold base 2 begins to return and rise. Under the action of the first spring 104, the telescopic rod 101 pushes the limiting plate 102 and the first protrusion 103 to reset upwards. The third notch 201 then disengages from the first protrusion 103, preparing for the next processing.

[0049] Once the entire mold system completes a full work cycle, the finished car door parts can be quickly removed and new workpieces to be processed can be installed. Repeating the above steps can achieve continuous production.

[0050] Thus, when this flanging die is applied in the actual automobile manufacturing process, it not only improves the efficiency and consistency of door flanging processing, but also enhances the adaptability and stability of the die, meeting the needs of modern industrialized mass production.

[0051] refer to Figures 1 to 6 As shown, the lower mold base 1 has a first cross groove 105 at its upper end, and the lower end of the door flanging punch 107 is fixedly connected to a first cross block 114, which matches the first cross groove 105; the upper mold base 2 has a second cross groove 203 at its lower end, and the upper end of the door flanging die 204 is fixedly connected to a second cross block 210, which matches the second cross groove 203.

[0052] It should be noted that when the door flange punch 107 needs to be installed, the operator aligns the first cross block 114 fixedly connected at its lower end with the first cross groove 105 opened at the upper end of the lower die base 1, and inserts the first cross block 114 into the first cross groove 105 to complete the initial positioning and assembly.

[0053] In this way, the mating structure between the first cross block 114 and the first cross groove 105 can achieve rapid and accurate positioning, and ensure that the door flange punch 107 remains stable during processing, and is not prone to displacement or rotation, thereby improving the overall assembly accuracy and operational reliability of the mold.

[0054] When it is necessary to replace the door flanging punch 107 of different specifications to meet different production needs, the existing punch can be quickly disassembled by simply pulling it out along the direction of the first cross groove 105, which facilitates subsequent replacement or maintenance.

[0055] In this way, when the new door flange punch 107 is reinstalled, it can still be quickly positioned and fixed through the matching structure of the first cross block 114 and the first cross groove 105, ensuring processing consistency.

[0056] When installing or replacing the door flange die 204, the operator aligns the second cross block 210 fixedly connected to the upper end of the die with it and inserts it into the second cross groove 203 opened at the lower end of the upper die base 2, thereby achieving a stable connection of the die.

[0057] In this way, the cooperation between the second cross block 210 and the second cross groove 203 not only improves the installation efficiency of the door flanging die 204, but also enhances its stability during the processing, avoiding misalignment or deformation caused by uneven force.

[0058] Once the entire mold system is assembled and put into use, the connection between the punch and die via the aforementioned cross block and cross groove enables rapid assembly and disassembly as well as high-precision fitting, providing a reliable guarantee for efficient and stable door flanging processing.

[0059] Thus, when this structure is applied to actual automobile manufacturing processes, it not only enhances the versatility and flexibility of molds, but also significantly improves equipment maintenance efficiency and production adaptability, meeting the diverse needs of multi-variety, small-batch, and standardized production.

[0060] refer to Figures 1 to 6 As shown, a second protrusion 106 is fixedly connected to the upper end of the lower mold base 1, and a second recess 112 is provided at the lower end of the door flange punch 107. The second recess 112 matches the second protrusion 106, and a second spring 113 is sleeved and connected inside the second recess 112.

[0061] It should be noted that when the door flanging punch 107 needs to be installed on the lower die base 1, the operator should align the second notch 112 at the lower end of the door flanging punch 107 with the second protrusion 106 fixedly connected at the upper end of the lower die base 1, and then mate the two together.

[0062] In this way, the matching structure between the second notch 112 and the second protrusion 106 can achieve rapid positioning and initial fixation, ensuring the installation stability and repeatability of the door flange punch 107 on the lower die base 1.

[0063] When the door flange punch 107 is subjected to pressure from the upper die direction, the pressure is transmitted through the second notch 112 to the second spring 113 connected inside. At this time, the second spring 113 is compressed and absorbs part of the impact force.

[0064] In this way, when instantaneous overload or uneven force occurs during processing, the second spring 113 can play a buffering and shock-absorbing role, avoiding mold damage or poor workpiece forming caused by rigid contact.

[0065] When the pressure is released, under the elastic restoring force of the second spring 113, the second notch 112 and the second protrusion 106 automatically return to their initial mating state, preparing for the next processing cycle.

[0066] Thus, when this structure is applied in actual production, it not only improves the connection stability between the door flanging punch 107 and the lower die base 1, but also enhances the impact resistance and service life of the die system, and improves the reliability and safety of equipment operation.

[0067] refer to Figures 1 to 6 As shown, the upper end of the upper mold base 2 is fixedly connected to the third protrusion 202, and the lower end of the door flange die 204 is provided with a fourth recess 209, which matches the third protrusion 202.

[0068] It should be noted that when installing the door flanging die 204 to the upper die base 2, the operator should first align the fourth notch 209 at the lower end of the door flanging die 204 with the third protrusion 202 fixedly connected to the upper end of the upper die base 2, and then mate the two together.

[0069] In this way, the matching structure between the fourth notch 209 and the third protrusion 202 enables rapid and precise positioning, ensuring the stable installation and repeatability of the door flange die 204 on the upper die holder 2. This design simplifies the assembly process, improves work efficiency, and guarantees consistency in each installation.

[0070] After the door flanging die 204 is assembled with the upper die base 2, during the actual processing, the upper die base 2 drives the door flanging die 204 to move downward and close with the door flanging punch 107 on the lower die base 1 to perform flanging forming operation on the door panel material.

[0071] In this way, due to the tight fit between the third protrusion 202 and the fourth recess 209, the door flanging die 204 remains stable throughout the entire processing and will not shift or rotate, thus ensuring the quality and consistency of the flanging forming.

[0072] When it is necessary to replace the door flanging die 204 with different specifications or types to meet different production needs, the existing die can be easily disassembled by simply pulling it out along the direction of the third protrusion 202, which facilitates subsequent replacement or maintenance.

[0073] In this way, the new door flanging die 204 can be quickly installed and positioned through the matching structure of the fourth notch 209 and the third protrusion 202, ensuring that the equipment can be quickly switched to new production tasks, thereby improving production flexibility and response speed.

[0074] Once the entire mold system is assembled and put into use, the precise fit between the third protrusion 202 and the fourth recess 209 not only improves the connection stability between the door flanging die 204 and the upper die base 2, but also enhances the overall reliability and service life of the equipment, meeting the requirements of modern industry for efficient and high-quality production.

[0075] refer to Figures 1 to 6 As shown, the side end of the door flanging punch 107 is provided with a bayonet 110 and a limiting port 111, and the side end of the door flanging die 204 is connected to a limiting block 208, which matches the bayonet 110 and the limiting port 111.

[0076] It should be noted that when the door flanging die 204 moves downward with the upper die base 2 and approaches the door flanging punch 107, the limiting block 208 connected to the side end of the door flanging die 204 gradually approaches the bayonet 110 and the limiting port 111 area on the door flanging punch 107.

[0077] In this way, the cooperation between the limit block 208 and the bayonet 110 provides a preliminary guiding effect for the mold closure, ensuring that the upper and lower molds are in the correct alignment state before contact, and avoiding workpiece deformation or mold damage caused by misalignment.

[0078] When the door flanging die 204 continues to press down and begins to apply pressure to the door panel material, the limiting block 208 slides into the limiting port 111 to achieve a limiting engagement with the door flanging punch 107. At this time, the limiting block 208 and the limiting port 111 work together to limit the final closed position of the die, ensuring the stability of the force direction and contact area during the processing.

[0079] In this way, the matching design of the limiting block 208 and the limiting port 111 can effectively control the stroke accuracy during the flanging process and improve the consistency of the flanging shape and the dimensional accuracy.

[0080] After the mold completes one flanging operation and opens, the limiting block 208 disengages from the limiting port 111, preparing for the next processing cycle. During this process, due to the good guiding and self-centering capabilities of the limiting structure, high repeatability positioning accuracy is maintained for each closure.

[0081] Thus, when this structure is applied to actual automobile manufacturing processes, it not only improves the stability and safety of mold operation, but also enhances the reliability of equipment in continuous production, which helps to improve product quality and production efficiency.

[0082] refer to Figures 1 to 6 As shown, the upper end of the door flanging punch 107 is provided with a first recess 108, and the upper end of the door flanging die 204 is fixedly connected with a fourth protrusion 205, which matches the first recess 108; the upper end of the door flanging punch 107 is provided with a flanging convex feature 109, and the upper end of the door flanging die 204 is provided with a flanging concave feature 206, which matches the flanging convex feature 109.

[0083] It should be noted that when the door flanging die 204 moves downward with the upper die base 2 and approaches the closed position, the fourth protrusion 205 fixedly connected to its upper end gradually aligns with the first notch 108 opened at the upper end of the door flanging die 107, and is inserted into it during the continued pressing process to achieve auxiliary positioning between the upper and lower dies.

[0084] In this way, the matching structure between the fourth protrusion 205 and the first recess 108 can provide precise guidance and pre-positioning functions before the mold closes, effectively preventing processing deviations or mold damage caused by misalignment, and improving the stability of mold operation and repeatability accuracy.

[0085] When the mold is fully closed, the flanging convex feature 109 set on the upper end of the door flanging punch 107 and the flanging concave feature 206 set on the upper end of the door flanging die 204 fit tightly together to form a precise flanging forming cavity; at this time, the door panel material to be processed is clamped between these two mating surfaces and the flanging forming operation is completed under pressure.

[0086] In this way, the high-precision matching between the convex flange feature 109 and the concave flange feature 206 ensures the consistency of the flange contour and surface quality, which can meet the high standards of different vehicle models for door appearance and assembly performance.

[0087] After processing is completed, the upper mold base 2 drives the door flanging die 204 to rise, the fourth protrusion 205 disengages from the first notch 108, and at the same time the flanging concave feature 206 separates from the flanging convex feature 109, preparing for the next processing cycle.

[0088] Thus, when this structure is applied to actual automobile manufacturing processes, it not only improves the precision and consistency of door flanging forming, but also enhances the interchangeability and maintenance convenience of molds, which helps to improve the quality control level and production efficiency of the whole vehicle manufacturing.

[0089] The working principle of the flange mold for car door edges provided by this utility model is as follows:

[0090] First, fix the lower die base 1 onto the worktable of the stamping equipment; check whether the door flanging punch 107 is securely connected to the upper end of the lower die base 1, confirm that the first cross block 114 matches and engages with the first cross groove 105, and that the second spring 113 is provided in the second recess 112 and fits well with the second protrusion 106; install the upper die base 2 onto the slider of the stamping equipment; confirm that the door flanging die 204 is connected to the second cross groove 203 through the second cross block 210, and check whether the fourth protrusion 205 is aligned with the first recess 108, check whether the limiting block 208 is securely connected, and check the bayonet 110 and the limiting port 1. 11. Check if it matches the limiting block 208; ensure there are no foreign objects between the flanged convex feature 109 and the flanged concave feature 206, the surfaces are smooth, and they have good fit. Place the door panel material to be processed stably on top of the door flanged punch 107, ensuring that the edge position is accurately aligned with the flanged area. The upper die base 2 begins to descend, and the fourth punch 205 is inserted into the first recess 108 to achieve auxiliary positioning between the upper and lower dies. At the same time, the limiting block 208 enters the bayonet 110 to prepare for subsequent limiting actions. The upper die base 2 continues to descend, and the door flanged concave die 204 gradually presses the door panel material. The fourth punch 205 is fully embedded. The first notch 108, the limiting block 208 slides into the limiting opening 111 from the bayonet 110, defining the final closed position; the flanged concave feature 206 and the flanged convex feature 109 fit tightly together to form a precise flanged cavity. Under pressure, the edge of the door panel material is precisely pressed into the cavity to complete the flange forming; during this process, the telescopic rod 101 drives the limiting plate 102 to compress the first spring 104 downward, absorbing the impact force and maintaining stable pressure. After stamping, the upper die base 2 rises, and the door flanged die 204 is raised accordingly; the fourth protrusion 205 disengages from the first notch 108, and the limiting block 208 disengages from the limiting opening 111. Exit from port 111; the first spring 104 pushes the limit plate 102 to reset, restoring the initial state, and removes the completed flanging door part from the door flanging punch 107; check the flanging quality to ensure there are no burrs, deformation or misalignment. If it is necessary to process doors of different models, the current door flanging punch 107 and door flanging die 204 can be disassembled; use the quick replacement structure such as the first cross block 114 and the first cross groove 105, the second cross block 210 and the second cross groove 203 to install the new mold assembly; adjust the structure such as the limit block 208, the bayonet 110, and the limit port 111 to adapt to the new mold.

[0091] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A flanging die for a vehicle door edge, characterized by, include: Lower mold base (1); At least one set of telescopic rods (101) are fixedly connected to the upper end of the lower mold base (1); At least one set of limiting plates (102) are fixedly connected to the output end of the telescopic rod (101); At least one set of first protrusions (103) are fixedly connected to the upper end of the limiting plate (102); At least one set of first springs (104) are sleeved and connected to the circumferential surface of the output end of the telescopic rod (101); Door flanging punch (107), the door flanging punch (107) is connected to the upper end of the lower die base (1); Upper mold base (2), which is disposed at the upper end of lower mold base (1); At least one set of third recesses (201) are provided at the lower end of the upper mold base (2), and the third recesses (201) are matched with the first protrusion (103); Door flanging die (204), which is connected to the lower end of the upper die base (2).

2. The flanging mold for the edge of a car door as described in claim 1, characterized in that: The lower mold base (1) has a first cross groove (105) at its upper end, and the lower end of the door flanging punch (107) is fixedly connected to a first cross block (114), which matches the first cross block (114) with the first cross groove (105); the upper mold base (2) has a second cross groove (203) at its lower end, and the upper end of the door flanging die (204) is fixedly connected to a second cross block (210), which matches the second cross block (210) with the second cross groove (203).

3. The flanging mold for the edge of a car door as described in claim 2, characterized in that: The upper end of the lower mold base (1) is fixedly connected to a second protrusion (106), and the lower end of the door flange punch (107) is provided with a second recess (112). The second recess (112) matches the second protrusion (106), and a second spring (113) is sleeved and connected inside the second recess (112).

4. The flanging mold for the edge of a car door as described in claim 1, characterized in that: The upper end of the upper mold base (2) is fixedly connected to a third protrusion (202), and the lower end of the door flange die (204) is provided with a fourth recess (209), which matches the third protrusion (202).

5. The flanging mold for the edge of a car door as described in claim 1, characterized in that: The side end of the door flanging punch (107) is provided with a slot (110) and a limiting port (111), and the side end of the door flanging die (204) is connected to a limiting block (208), which matches the slot (110) and the limiting port (111).

6. The flanging die for the edge of a car door as described in claim 1, characterized in that: The upper end of the door flanging punch (107) is provided with a first recess (108), and the upper end of the door flanging die (204) is fixedly connected with a fourth protrusion (205), which matches the first recess (108); the upper end of the door flanging punch (107) is provided with a flanging convex feature (109), and the upper end of the door flanging die (204) is provided with a flanging concave feature (206), which matches the flanging convex feature (109) and the flanging concave feature (206).

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