An outer trim part surface large-size special-shaped hole forming device

Abstract

This utility model relates to the technical field of automotive exterior parts processing equipment, and discloses a device for forming irregular holes with large surface dimensions on exterior parts. It includes a bracket, a worktable on the bracket, a longitudinal guide rail, a cylinder mounted on the longitudinal guide rail, a stamping mechanism cooperating with the cylinder, and a support seat on the worktable. A waste collection hopper for collecting waste generated during punching is provided on the worktable. The stamping mechanism includes a transmission end, a connecting block, a concave frame, a pressure block, mounting pins, a limiting plate, a buffer, an upper die, and a punch. The transmission end is connected to the cylinder drive end, and the connecting block adapts to connect the transmission end and the concave frame. This utility model, by designing an irregular punching device, solves the forming requirements of irregular holes in automotive exterior parts, achieving automation, low cost, and high efficiency, avoiding low-dimensional high-investment issues, ensuring good gap surface differences, and greatly improving industrial production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive exterior parts processing equipment, and in particular to a device for forming irregular holes with large surface dimensions on exterior parts. Background Technology

[0002] With the accelerated development of automotive intelligence and electrification, automotive exterior components are evolving from single-function protective parts to multi-dimensional composite systems. This trend of functional integration places higher demands on appearance, requiring a precise balance between aesthetic design, structural strength, and electronic compatibility. To meet the installation design requirements of the rear door AR light and shadow controller, an automated punching machine is used to create larger irregularly shaped holes, ensuring proper assembly of the installer, a beautiful appearance, and high efficiency, while also meeting the required gap and surface finish after assembly. Compared to existing laser cutting designs, this reduces costs and improves assembly efficiency.

[0003] To address the aforementioned issues, a device for forming irregularly shaped holes with large surface dimensions on exterior trim parts is proposed. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a device for forming irregular holes with large surface dimensions on exterior parts, aiming to improve the problem that some existing devices are difficult to form large irregular holes accurately and efficiently.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for forming irregular holes with large surface dimensions on exterior parts includes a bracket, a worktable on the bracket, a longitudinal guide rail frame mounted on the top of the worktable, a cylinder mounted on the longitudinal guide rail frame, a stamping mechanism with a heating gun and the cylinder mounted on the back side of the longitudinal guide rail frame, and a support seat on the worktable. A waste recycling hopper for collecting waste generated during punching is provided on the worktable.

[0007] The stamping mechanism includes a transmission end, a docking block, a concave frame, a pressure block, a mounting pin, a limiting plate, a buffer, an upper die, and a punch. The transmission end is connected to the cylinder drive end. The docking block is adapted to connect the transmission end and the concave frame. The pressure block is installed below the concave frame. The mounting pin passes through the pressure block and is connected to the concave frame. The buffer is located between the limiting plate and the concave frame. The punch is fixed to the bottom of the upper die.

[0008] As a further description of the above technical solution:

[0009] The mounting pin includes a fixing ring, inside which is a threaded pin. The threaded pin is divided into a top threaded end and a bottom locking section. A drive rod is slidably connected inside the threaded pin. A rough-surfaced column is fixedly connected to the end of the drive rod. A conical pressure plate is fixedly connected to the middle of the drive rod. Multiple wedge blocks are slidably connected inside the locking section of the threaded pin. Multiple wedge blocks are slidably connected inside the fixing ring. Multiple return springs are fixedly connected inside the fixing ring, and the other end of the return spring is connected to an insert block.

[0010] As a further description of the above technical solution:

[0011] The threaded pin has a transmission cavity inside to support the movement of the roughened column. The inner wall of the transmission cavity is divided into an upper friction surface and a lower smooth surface. The upper friction surface is adapted to the outer rough surface of the roughened column.

[0012] As a further description of the above technical solution:

[0013] Both the threaded nail and the fixing ring have movable cavities inside, and the wedge block one, the wedge block two and the insert block all move inside the movable cavities;

[0014] As a further description of the above technical solution:

[0015] The outer end of the first wedge block is in contact with the bottom end of the second wedge block, and the top end of the second wedge block is in contact with the outer end of the insert block;

[0016] As a further description of the above technical solution:

[0017] A slot is provided at the junction of the fixing ring and the top of the threaded nail, and the slot is adapted to the shape of the insert block;

[0018] As a further description of the above technical solution:

[0019] The buffer component includes a fixed rod and a buffer spring. The bottom end of the fixed rod is installed on the top of the limiting plate by a nut, and the outside of the fixed rod is slidably connected to the inside of the concave frame. A buffer spring is provided between the limiting plate and the concave frame, and the buffer spring is sleeved on the outside of the fixed rod.

[0020] As a further description of the above technical solution:

[0021] The support base is provided with a lower die, an anti-deviation block, and an anti-deviation block. The punch matches the contour of the irregular hole of the outer trim part, and the pressure block suppresses the material rebound. The position and size of the lower die, anti-deviation block, and anti-deviation block of the support base can be adapted and adjusted according to the specific shape of the outer trim part.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by designing a special-shaped punching device, the forming requirements of special-shaped holes in the exterior trim of the car body are solved, achieving automation, low cost and high efficiency, avoiding low-dimensional high investment, ensuring gap surface difference and other problems, greatly improving industrial production efficiency, shortening cycle time, providing valuable experience for flexible automated production, and providing experience support for exterior trim suppliers to adapt to the assembly production of complex shapes.

[0024] 2. In this utility model, the rapid disassembly and assembly of the punch is achieved through the linkage of the drive column, the rough surface column, and the conical pressure plate, without the need for additional tools, thus improving the replacement efficiency. The wedge block, the return spring, the insertion block and the slot are used to automatically lock after installation, effectively resisting vibration, ensuring the stable connection of the punch during the operation of the device, and reducing the risk of failure. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a device for forming irregular holes with large surface dimensions on exterior trim parts, as proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the longitudinal guide rail frame of a device for forming irregular holes with large surface dimensions on exterior parts, as proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the stamping mechanism of a device for forming irregular holes with large surface dimensions on exterior trim parts, as proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the mounting pin structure of a device for forming irregular holes with large surface dimensions on exterior trim parts, as proposed in this utility model.

[0029] Legend:

[0030] 1. Bracket; 2. Worktable; 3. Longitudinal guide rail; 4. Cylinder; 5. Heating gun; 6. Stamping mechanism; 61. Transmission end; 62. Connecting block; 63. Concave frame; 64. Pressure block; 65. Mounting pin; 651. Fixing ring; 652. Threaded pin; 653. Drive rod; 654. Rough-surfaced column; 655. Conical pressure plate; 656. Wedge block one; 657. Wedge block two; 658. Return spring; 659. Insert block; 66. Limiting plate; 67. Buffer; 68. Upper die; 69. Punch; 7. Support base; 71. Lower die one; 72. Anti-deviation block one; 73. Anti-deviation block two; 8. Scrap recycling hopper. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1 to 4 This utility model provides an embodiment of a device for forming irregular holes with large surface dimensions on exterior parts. The device includes a support 1, serving as the basic support structure for the entire device and providing a stable mounting carrier for subsequent components; a worktable 2 mounted on the support 1, used to support the exterior parts to be processed and install related components, providing a working platform; a longitudinal guide rail 3, providing a mounting base and motion guide for the cylinder 4, ensuring the movement accuracy of the cylinder 4; the cylinder 4 mounted on the longitudinal guide rail 3, serving as a power source to output driving force; a heating gun 5 mounted on the back side of the longitudinal guide rail 3, which sprays high-temperature gas onto the exterior parts during the punching process to prevent paint cracking due to low temperatures; a stamping mechanism 6 cooperating with the cylinder 4 to complete the irregular hole punching and forming operation; and a support seat 7 mounted on the worktable 2 for positioning the exterior parts. A waste collection hopper 8 is provided on the worktable 2 to collect waste generated during punching, centrally collecting waste and maintaining a clean environment.

[0033] The stamping mechanism 6 includes a transmission end 61, which receives and transmits the driving force from the cylinder 4; a docking block 62, which connects the transmission end 61 to the concave frame 63 to ensure power transmission; the concave frame 63, which drives related components to stamp under power; a pressure block 64, which moves with the concave frame 63 to work with the punch 69 to suppress material springback; mounting pins 65, which enable quick assembly and disassembly and stable connection of the punch 69 and other components for easy maintenance; a limit plate 66, which helps ensure the working stability and motion accuracy of the stamping mechanism 6; and a buffer 67, which affects the stamping process. The force is buffered to avoid damage to the parts. The upper mold 68 serves as the mounting carrier for the punch 69, driving the punch 69 to move. The punch 69 matches the contour of the irregular hole of the outer trim part and directly punches the irregular hole. The transmission end 61 is connected to the drive end of the cylinder 4. The mating block 62 is adapted to connect the transmission end 61 and the concave frame 63. The pressure block 64 is installed below the concave frame 63. The mounting nail 65 passes through the pressure block 64 and is connected to the concave frame 63. The buffer 67 is located between the limiting plate 66 and the concave frame 63. The punch 69 is fixed to the bottom of the upper mold 68.

[0034] The mounting pin 65 includes a retaining ring 651, which provides installation space and movement constraints for internal components. The retaining ring 651 has a threaded pin 652 inside, which connects and fixes to the concave frame 63 through rotation. A bottom locking section cooperates with other components to achieve locking. The threaded pin 652 is divided into a top threaded end and a bottom locking section. The top threaded end connects to the concave frame 63, and the bottom locking section provides the locking function. A drive rod 653 is slidably connected inside the threaded pin 652, which drives related components through its own movement to lock and unlock the mounting pin 65. A roughened column 654 is fixedly connected to the end of the drive rod 653, cooperating with the inner wall of the transmission cavity to achieve power transmission or disconnection. The threaded pin 652 has a transmission cavity inside to support the movement of the roughened column 654, providing space for its movement and enabling power conversion. The inner wall of the transmission cavity is divided into an upper friction surface and a lower smooth surface, cooperating with the roughened column 654 to switch power transmission states. The upper friction surface is adapted to the outer roughened surface of the roughened column 654. A conical pressure plate 655 is fixedly connected to the middle of the drive rod 653. The movement of the drive rod 653 controls the extension and retraction of the wedge block 656, thereby locking and unlocking the mounting nail 65. Multiple wedge blocks 656 are slidably connected inside the locking section of the threaded nail 652. Controlled by the conical pressure plate 655, they participate in the transmission of locking and unlocking actions. Multiple wedge blocks 657 are slidably connected inside the fixing ring 651. Driven by the wedge blocks 656, they push the insert block 659 to move. Multiple return springs 658 are fixedly connected inside the fixing ring 651. When the deformation is restored, the insert block 659 is disengaged from the slot, which helps to unlock. The other end of the return spring 658 is connected to the insert block 659. Inserting into the slot locks the nail, and disengaging unlocks it. A slot is provided at the junction of the fixing ring 651 and the top of the threaded nail 652 to provide insertion space for the insert block 659, ensuring that the mounting nail 65 is locked securely. The slot and the insert block 659 are matched in shape. Both the threaded pin 652 and the retaining ring 651 have movable cavities inside, providing space for the wedge block 656, the second wedge block 657, and the insert block 659 to move, ensuring the realization of mechanical movement. The wedge block 656, the second wedge block 657, and the insert block 659 all move inside the movable cavities. The outer end of the first wedge block 656 contacts the bottom end of the second wedge block 657, and the top end of the second wedge block 657 contacts the outer end of the insert block 659, transmitting the action to realize locking and unlocking.

[0035] The buffer component 67 includes a fixed rod and a buffer spring. The bottom end of the fixed rod is installed on the top of the limiting plate 66 by a nut, and the outside of the fixed rod is slidably connected to the inside of the concave frame 63. A buffer spring is provided between the limiting plate 66 and the concave frame 63, and the buffer spring is sleeved on the outside of the fixed rod to buffer the stamping pressure, avoid damage to the components, and ensure stamping stability and accuracy.

[0036] The support base 7 is equipped with a lower die 71, which works with the punch 69 to provide a basic forming hole for the lower die, an anti-offset block 72 to position the outer trim to prevent processing offset, and an anti-offset block 73, which works with the anti-offset block 72 to adapt and adjust according to the shape of the outer trim to enhance the positioning effect. The punch 69 matches the contour of the outer trim hole and works with the pressure block 64 to suppress material springback. The position and size of the lower die 71, anti-offset block 72 and anti-offset block 73 of the support base 7 can be adapted and adjusted according to the specific shape of the outer trim to ensure accurate positioning of the outer trim and improve the forming quality of the irregular hole.

[0037] Working Principle: The working process of this device for forming irregular holes with large surface dimensions on exterior parts is as follows: First, the exterior part to be processed is placed on the support seat 7 on the worktable 2. Using the lower die 71, anti-deviation block 72, and anti-deviation block 73 on the support seat 7, the position and size are adjusted according to the specific shape of the exterior part to locate the punching position and prevent it from shifting during subsequent processing. Then, the device is started, and the cylinder 4 installed on the longitudinal guide rail 3 begins to work. The transmission end 61 connected to the drive end of the cylinder 4 moves accordingly. Through the mating block 62, the power is transmitted to the concave frame 63, causing the concave frame 63 to move downward.

[0038] During the downward movement of the concave frame 63, the buffer 67 located between the limiting plate 66 and the concave frame 63 plays a role. The bottom end of the fixing rod of the buffer 67 is installed on the top of the limiting plate 66 by a nut and is slidably connected to the inside of the concave frame 63 on the outside. The buffer spring between the limiting plate 66 and the concave frame 63 is sleeved on the outside of the fixing rod to buffer the punching pressure. As the concave frame 63 continues to move downward, the punch 69 fixed to the bottom of the upper die 68 gradually approaches the outer part. The punch 69 matches the contour of the irregular hole of the outer part and finally cooperates with the pressure block 64 to punch the punching part, pressing out the irregular hole. The waste generated during the punching process falls into the waste recycling hopper 8 set on the worktable 2, completing one irregular hole forming process. Afterward, the cylinder 4 drives the punching mechanism 6 to reset, and the next outer part to be processed can be placed, repeating the above process to achieve continuous processing.

[0039] When the punch 69 needs to be replaced, press the drive column upward. The drive column moves upward, causing the rough surface column 654 to move upward and contact the upper layer of the inner side wall of the transmission cavity. This allows the movement of the drive column to be transmitted to the entire threaded nail 652. When the drive column moves upward, it causes the conical pressure plate 655 to move upward, so that the wedge block 656 is not under pressure. Then, the gravity of the second wedge block 657 automatically moves downward, pushing the first wedge block 656 to retract into the threaded nail 652. At the same time, the return spring 658 deforms and restores its shape, causing the insert block 659 to disengage from the slot. Then, rotate the drive column to remove the entire mounting nail 65, so that the pressure block 64 and the punch 69 can be removed from the concave frame 63.

[0040] When installation is required, the mounting pin 65 is inserted, and the drive column is rotated so that the threaded section of the threaded pin 652 rotates into the bottom of the concave frame 63. Then, the drive column is pulled outward so that the rough-surfaced column 654 contacts the lower smooth surface of the transmission cavity, thereby disconnecting the movement of the drive column from the movement of the entire threaded pin 652. When the drive column moves downward, it drives the conical pressure plate 655 to move downward, thereby generating lateral pressure on the first wedge block 656, pushing the first wedge block 656 to move outward, which in turn drives the second wedge block 657 to move upward. As the second wedge block 657 moves upward, it pushes the insert block 659 to move towards the slot until it is fully inserted into the slot, thereby preventing the vibration generated during the operation of the entire device from causing the threaded pin 652 to loosen.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for forming irregularly shaped holes with large surface dimensions on exterior trim parts, characterized in that, Includes a bracket (1), a worktable (2) on the bracket (1), a longitudinal guide rail (3) on the top of the worktable (2), a cylinder (4) on the longitudinal guide rail (3), a heating gun (5) on the back of the longitudinal guide rail (3) and a stamping mechanism (6) cooperating with the cylinder (4), and a support base (7) on the worktable (2). The worktable (2) is provided with a waste recycling hopper (8) for collecting waste generated by punching. The stamping mechanism (6) includes a transmission end (61), a docking block (62), a concave frame (63), a pressure block (64), a mounting pin (65), a limiting plate (66), a buffer (67), an upper die (68), and a punch (69). The transmission end (61) is connected to the driving end of the cylinder (4). The docking block (62) is adapted to connect the transmission end (61) and the concave frame (63). The pressure block (64) is installed below the concave frame (63). The mounting pin (65) passes through the pressure block (64) and is connected to the concave frame (63). The buffer (67) is located between the limiting plate (66) and the concave frame (63). The punch (69) is fixed to the bottom of the upper die (68).

2. The device for forming irregular holes with large surface dimensions on exterior trim parts according to claim 1, characterized in that: The mounting pin (65) includes a retaining ring (651), and a threaded pin (652) is provided inside the retaining ring (651). The threaded pin (652) is divided into a top threaded end and a bottom locking section. A drive rod (653) is slidably connected inside the threaded pin (652). A rough-surfaced column (654) is fixedly connected to the end of the drive rod (653). A conical pressure plate (655) is fixedly connected to the middle of the drive rod (653). Multiple wedge blocks (656) are slidably connected inside the locking section of the threaded pin (652). Multiple wedge blocks (657) are slidably connected inside the retaining ring (651). Multiple return springs (658) are fixedly connected inside the retaining ring (651), and an insert (659) is connected to the other end of the return spring (658).

3. The device for forming irregular holes with large surface dimensions on exterior trim parts according to claim 2, characterized in that: The threaded pin (652) has a transmission cavity inside for supporting the movement of the roughened column (654). The inner wall of the transmission cavity is divided into an upper friction surface and a lower smooth surface. The upper friction surface is adapted to the outer rough surface of the roughened column (654).

4. The device for forming irregular holes with large surface dimensions on exterior trim parts according to claim 2, characterized in that: The threaded nail (652) and the fixing ring (651) are both provided with movable cavities, and the first wedge block (656), the second wedge block (657) and the insert block (659) are all movable inside the movable cavities.

5. The device for forming irregular holes with large surface dimensions on exterior trim parts according to claim 2, characterized in that: The outer end of the first wedge (656) is in contact with the bottom end of the second wedge (657), and the top end of the second wedge (657) is in contact with the outer end of the insert (659).

6. The device for forming irregular holes with large surface dimensions on exterior trim parts according to claim 2, characterized in that: The fixing ring (651) has a slot at the top where it meets the threaded nail (652), and the slot is adapted to the shape of the insert (659).

7. The device for forming irregular holes with large surface dimensions on exterior trim parts according to claim 1, characterized in that: The buffer (67) includes a fixed rod and a buffer spring. The bottom end of the fixed rod is installed on the top of the limiting plate (66) by a nut and the outside of the fixed rod is slidably connected to the inside of the concave frame (63). A buffer spring is provided between the limiting plate (66) and the concave frame (63) and the buffer spring is sleeved on the outside of the fixed rod.

8. The device for forming irregular holes with large surface dimensions on exterior trim parts according to claim 1, characterized in that: The support base (7) is provided with a lower die (71), an anti-offset block (72) and an anti-offset block (73). The punch (69) matches the profile of the irregular hole of the outer trim and works with the pressure block (64) to suppress material rebound. The position and size of the lower die (71), anti-offset block (72) and anti-offset block (73) of the support base (7) can be adapted and adjusted according to the specific shape of the outer trim.

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