A car door frame edge-wrapping device

Abstract

This utility model relates to the field of automotive door frame manufacturing technology, and more particularly to an automotive door frame edging device, including a support frame, a mold top for fixing the door frame to be edged, and a rear side for fixing the support frame; a pressure arm with its lower end rotatably mounted on the bottom of the support frame via an eccentric shaft, and its upper end extending into the inner window area of ​​the door frame to be edged, and hinged to the front end of a hinge mechanism, with a pressure knife fixed to the front side of the upper end of the pressure arm; a cylinder hinged to the rear side of the support frame, with its output end hinged to the rear end of the hinge mechanism, the cylinder driving the hinge mechanism to move the pressure arm forward, so that the pressure knife performs a horizontal bending action; a motor fixed to the bottom of the support frame, used to drive the eccentric shaft to move the pressure arm downward, so that the pressure knife performs a vertical compaction action. This utility model provides an automotive door frame edging device, whose pressure knife part can extend into the window of the door frame for edging operations, solving the problem that existing edging devices cannot effectively bend the upper edge of the outer door panel from the inner side of the door frame window.

Description

Technical Field

[0001] This utility model relates to the field of automotive door frame manufacturing technology, and in particular to an automotive door frame edge-wrapping device. Background Technology

[0002] As a fundamental component of the car door structure, the car door frame plays a crucial role in the entire vehicle manufacturing process. Especially in the edge-sealing process, the quality of the edge-sealing not only directly affects the overall structural strength and sealing performance of the car door, but also has a significant impact on production efficiency and product consistency.

[0003] In existing manufacturing processes, the edge-wrapping operation of automotive door frames typically relies on large edge-wrapping equipment. For example, a door edge-wrapping device disclosed in utility model patent number CN206632172U can perform edge-wrapping operations on conventional door frame structures.

[0004] However, for such Figure 1 The car door frame with this specific structural form shown has its edging section located inside the window of the door frame. Existing edging equipment, due to its large structural dimensions and significant space constraints, cannot effectively bend the outer door panel by extending the actuator inside the window. Therefore, it cannot meet the edging requirements of this type of door frame. Utility Model Content

[0005] In view of this, the present invention proposes an automotive door frame edge-wrapping device, whose pressing part can extend into the window of the door frame to perform edge-wrapping operations, solving the problem that existing edge-wrapping devices cannot effectively bend the upper edge of the outer door panel from the inside of the door frame window.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides an automotive door frame edge-wrapping device, including a support frame, a mold, a motor, a pressure arm, a hinge mechanism, and a cylinder. The top of the mold is used to fix the door frame to be edged, and the rear side is used to fix the support frame. The lower end of the pressure arm is rotatably mounted on the bottom of the support frame via an eccentric shaft, and the upper end can extend into the inner area of ​​the window of the door frame to be edged and is hinged to the front end of the hinge mechanism. A pressure knife is fixed on the front side of the upper end of the pressure arm. The cylinder is hinged to the rear side of the support frame, and its output end is hinged to the rear end of the hinge mechanism. The cylinder drives the hinge mechanism to move the pressure arm forward so that the pressure knife performs a horizontal bending action. The motor is fixed to the bottom of the support frame and is used to drive the eccentric shaft to move the pressure arm downward so that the pressure knife performs a vertical compaction action.

[0007] Based on the above technical solutions, preferably, the mold is fixed relative to the ground, and an electromagnet is fixed on its inner side.

[0008] Based on the above technical solutions, preferably, a tool holder is fixed to the front side of the top of the mold, wherein... The tool holder and the pressure tool are fitted together vertically.

[0009] Based on the above technical solution, preferably, the eccentric shaft is horizontally arranged left and right, with a support plate at each end. The support plate is fixed on the support frame; The two ends of the eccentric shaft pass through the support plate at corresponding positions and are rotatably connected; The eccentric shaft has an eccentric part in the middle, and the eccentric part is located between the two support plates; The lower end of the pressure arm extends between the two support plates and is rotatably connected to the eccentric part.

[0010] Based on the above technical solutions, preferably, the lower end of the pressure arm is provided with a horizontal mounting groove, wherein... A bushing is fixed inside the mounting groove by a pressure plate; The bushing is fitted onto the eccentric part and rotatably connected.

[0011] Based on the above technical solutions, preferably, the pressure plate and the pressure arm are connected by bolts.

[0012] Based on the above technical solution, preferably, the pressure plate is provided with a first oil injection hole, and the bushing is provided with a second oil injection hole, wherein... The first oil injection hole is connected to the second oil injection hole.

[0013] Based on the above technical solutions, preferably, the bushing is divided into two half-shells along the axis.

[0014] Based on the above technical solutions, preferably, the output end of the motor is fixedly connected to one end of the eccentric shaft via a coupling.

[0015] Based on the above technical solutions, preferably, the hinge mechanism includes a first hinge plate, a second hinge plate, and a third hinge plate, wherein, The front two sides of the first hinge plate are hinged to the upper end of the pressure arm via rotating shafts, and the rear two sides are hinged to the front end of the second hinge plate via rotating shafts; The rear ends of the second hinge plate are hinged to the top of the support frame via pivots on both sides; One end of the third hinge plate is fixed to the bottom of the rear end of the second hinge plate, and the other end is hinged to the output end of the cylinder via a rotating shaft; The cylinder body is hinged to the rear side of the support frame via a rotating shaft on both sides.

[0016] The automotive door frame edge-wrapping device of this utility model has the following advantages over the prior art: (1) By setting the upper end of the pressure arm to extend into the inner area of ​​the car door frame window, the pressure knife can perform edge wrapping operation on the outer door panel inside the window, which solves the problem that the existing equipment cannot effectively bend inside the door frame window due to structural limitations, and improves the equipment's adaptability to complex door frames and edge wrapping accuracy.

[0017] (2) By setting an electromagnet inside the mold, the metal door frame can be quickly adsorbed and fixed, which improves the clamping efficiency and stability of the door frame, avoids the processing error caused by the offset of the door frame during the edge wrapping process, and further improves the production efficiency and product quality.

[0018] (3) By setting up a structure that matches the eccentric shaft and the support plate, a stable rotation fulcrum is provided for the pressure arm. At the same time, the eccentric part enables the eccentric drive for the up and down movement of the pressure arm, enhancing the clamping capacity of the equipment in the vertical direction and improving the edge compaction effect. In addition, the pressure plate is detachable, and the bushing is divided into two half-shells along the axis, which facilitates assembly and replacement and improves the ease of maintenance of the equipment. At the same time, oil injection holes are set and connected on the pressure plate and the bushing respectively, which facilitates the lubrication of the rotating parts, reduces wear, extends service life, and ensures the smoothness and reliability of the pressure arm movement. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional view of an existing car door frame; Figure 2 A perspective view of the automotive door frame edging device of this utility model after installation on an automotive door frame; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a perspective view of an automotive door frame edging device according to the present invention; Figure 5 for Figure 4 A partial 3D view; Figure 6 for Figure 4A stereoscopic view from another perspective; Figure 7 This is a schematic diagram of a partial cross-sectional structure of the eccentric shaft section; Figure 8 This is a partial exploded view of the eccentric shaft area; Figure 9 This is a 3D view of the pressure arm section; Figure 10 A three-dimensional view of the support frame; Figure 11 This is a diagram demonstrating the bending process; In the diagram: 1. Support frame; 2. Mold; 3. Pressure arm; 4. Hinge mechanism; 5. Cylinder; 6. Motor; 11. Support plate; 21. Electromagnet; 22. Tool holder; 31. Eccentric shaft; 32. Pressure tool; 33. Pressure plate; 34. Bushing; 41. First hinge plate; 42. Second hinge plate; 43. Third hinge plate; 61. Outer door panel; 62. Door frame; 301. Mounting groove; 311. Eccentric part; 341. Half shell; 611. Upper edge of outer door panel; 3301. First oil injection hole; 3401. Second oil injection hole. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] like Figure 1-11 As shown, this utility model discloses an automotive door frame edge-wrapping device, suitable for... Figure 1 The edging operation of this specific structure of a car door frame shown in the figure includes an outer door panel 61 and a door frame 62, with the edging part being the upper edge 611 of the outer door panel.

[0023] like Figure 2 As shown, the automotive door frame edging device of this utility model includes a support frame 1, a mold 2, a motor 6, a pressure arm 3, a hinge mechanism 4, and a cylinder 5.

[0024] The top of the mold 2 is used to fix the door frame to be edged, and the rear side is used to fix the support frame 1 to ensure the structural stability between the mold 2 and the main body of the equipment. The lower end of the pressure arm 3 is rotatably set at the bottom of the support frame 1 through the eccentric shaft 31, and the upper end can extend into the inner area of ​​the window of the door frame to be edged and is hinged to the front end of the hinge mechanism 4. A pressure knife 32 is fixed on the front side of the upper end of the pressure arm 3 for performing the edge-sealing action.

[0025] Cylinder 5 is hinged to the rear side of support frame 1, and its output end is hinged to the rear end of hinge mechanism 4. Cylinder 5 drives hinge mechanism 4 to move pressure arm 3 forward, so that pressure knife 32 performs a horizontal bending action. Motor 6 is fixed to the bottom of support frame 1 and is used to drive eccentric shaft 31 to move pressure arm 3 downward, so that pressure knife 32 performs a vertical compaction action.

[0026] During actual edge-sealing operations, the upper end of the pressure arm 3 can smoothly extend into the inner area of ​​the car door frame window, allowing the pressure knife 32 to precisely act on the upper edge 611 of the outer door panel, achieving bending and compaction of the inner edge of the window. This structure effectively solves the technical problem that existing edge-sealing equipment cannot effectively bend inside the door frame window due to structural size limitations, significantly improving the equipment's adaptability to complex door frame structures and edge-sealing accuracy.

[0027] In this embodiment, the mold 2 is fixedly positioned relative to the ground, and an electromagnet 21 is fixed to its inner side. The electromagnet 21 is used to attract the metal door frame to be edged, achieving rapid clamping and positioning, thus improving clamping efficiency and stability. Simultaneously, it ensures the door frame's position is fixed during the edge-wrapping process, preventing displacement or offset due to external forces and avoiding processing errors caused by door frame offset during edge-wrapping.

[0028] In addition, a pneumatic suction cup mechanism can also be set on the mold 2 to fix the car door frame to be edged, thereby expanding the applicability of the equipment.

[0029] In addition, a blade support table 22 is fixed to the front top of the mold 2. During the edge-sealing operation, the blade support table 22 and the pressure knife 32 form an upper and lower cooperation structure, providing a stable support platform for the pressure knife 32. This structure enhances the stability and consistency of the bending action, thereby effectively improving the edge-sealing quality.

[0030] In this embodiment, the eccentric shaft 31 is horizontally arranged, with a support plate 11 at each end. The support plate 11 is welded and fixed to the support frame 1. The two ends of the eccentric shaft 31 pass through the corresponding support plates 11 and are rotatably connected. An eccentric part 311 is provided in the middle of the eccentric shaft 31, which is located between the two support plates 11. The lower end of the pressure arm 3 extends between the two support plates 11 and is rotatably connected to the eccentric part 311.

[0031] Through the above structure, the support frame 1 provides a stable rotation fulcrum for the pressure arm 3, and at the same time, the eccentric part 311 of the eccentric shaft 31 enhances the pressing ability of the pressure arm 3 in the vertical direction, thereby further improving the compaction effect and quality stability of the edge wrapping operation.

[0032] In this structure, a mounting groove 301 is laterally formed at the lower end of the pressure arm 3, and a bushing 34 is fixed inside the mounting groove 301 by a pressure plate 33. The bushing 34 is fitted onto the eccentric part 311 and rotatably connected. The pressure plate 33 and the pressure arm 3 are connected by bolts. This facilitates disassembly and replacement, improving the maintainability and assembly convenience of the equipment.

[0033] Furthermore, the bushing 34 is divided into two half-shells 341 along the axis. This structure facilitates the installation and disassembly of the bushing 34, reduces assembly difficulty, improves maintenance efficiency, and ensures a tight fit between the bushing 34 and the eccentric part 311.

[0034] In addition, the pressure plate 33 is provided with a first oil injection hole 3301, and the bushing 34 is provided with a second oil injection hole 3401, and the two oil injection holes are interconnected. This design facilitates lubrication of rotating parts, effectively reduces wear, extends the service life of components, and ensures the smoothness and reliability of the movement of the pressure arm 3.

[0035] In terms of the drive structure, the output end of the motor 6 is fixedly connected to one end of the eccentric shaft 31 via a coupling. When the motor 6 drives the eccentric shaft 31 to rotate, the eccentric part 311 rotates eccentrically, causing the pressure arm 3 to swing around the eccentric part 311, thereby enabling the pressure knife 32 at the upper end of the pressure arm 3 to move closer to or further away from the pad table 22, thus completing the compaction operation on the edge of the door frame.

[0036] In this embodiment, the hinge mechanism 4 includes a first hinge plate 41, a second hinge plate 42, and a third hinge plate 43. The front ends of the first hinge plate 41 are hinged to the upper end of the pressure arm 3 via pivots, and the rear ends of the first hinge plate 41 are hinged to the front end of the second hinge plate 42 via pivots. The rear ends of the second hinge plate 42 are hinged to the top of the support frame 1 via pivots. One end of the third hinge plate 43 is fixed to the bottom rear end of the second hinge plate 42, and the other end is hinged to the output end of the cylinder 5 via a pivot. The cylinder body of the cylinder 5 is hinged to the rear side of the support frame 1 via pivots.

[0037] In this structure, the extension and retraction of cylinder 5 drives the third hinge plate 43 to move, which in turn causes the second hinge plate 42 to swing around its hinge point with the support frame 1. The swing of the second hinge plate 42 transmits force to the first hinge plate 41, and finally acts on the pressure arm 3, pushing it forward to perform a horizontal bending action.

[0038] It should be noted that the control method of cylinder 5 and motor 6 in this embodiment is a common automation control technology in the field, and the relevant control principles and implementation methods have been widely disclosed and maturely applied in the prior art. For example, the actions of cylinder 5 and motor 6 can be precisely timed by a programmable logic controller (PLC) combined with a position sensor to achieve coordinated linkage between the bending and compaction actions of the pressure arm 3. Since this part is not an improvement of this utility model, it will not be described in detail here.

[0039] In actual use, the aforementioned automotive door frame edge-wrapping equipment first fixes the mold 2 on the edge-wrapping station, then places the automotive door frame to be edge-wrapped on top of the mold 2, and uses the electromagnet 21 to achieve rapid adsorption and fixation. For example... Figure 11 As shown, before the edging, the upper edge 611 of the outer door panel and the outer door panel 61 form an L-shaped structure, and the upper edge of the door frame 62 is located in front of the upper edge 611 of the outer door panel. In addition, the eccentric part 311 is located above the central axis of the eccentric shaft 31.

[0040] Combination Figure 5 and Figure 9 During the bending process, the output end of cylinder 5 extends, pushing the lower end of the third hinge plate 43 forward, and the upper end of the third hinge plate 43 drives the front end of the second hinge plate 42 to tilt upward. During this process, the front end of the second hinge plate 42 pushes the first hinge plate 41 forward, and the first hinge plate 41 in turn pushes the upper end of the pressure arm 3 forward. Figure 11 As shown, the pressure knife 32 moves forward with the upper end of the pressure arm 3, pressing against the upper edge 611 of the outer door panel to achieve its bending action. During this process, the motor 6 does not work, and its output end is in a free rotation state. Therefore, the eccentric shaft 31 can also rotate freely, thereby allowing the pressure arm 3 to swing back and forth around the eccentric shaft 31 as the center, ensuring smooth horizontal bending motion.

[0041] After the output end of cylinder 5 is fully extended, the initial bending of the upper edge 611 of the outer door panel is completed. Subsequently, motor 6 starts and drives eccentric shaft 31 to rotate, causing the eccentric part 311 to move from above the central axis of eccentric shaft 31 to below. As the eccentric part 311 moves, it gradually pulls the pressure arm 3 downward, causing the pressure blade 32 at the upper end of the pressure arm 3 to press downward against the top of the bent upper edge 611 of the outer door panel. When the eccentric part 311 moves to directly below the central axis of eccentric shaft 31, as... Figure 11 As shown, the pressure knife 32 firmly presses the upper edge 611 of the outer door panel onto the top of the upper edge of the door frame 62, completing the final edge-wrapping operation. During this process, the upper end of the pressure arm 3 rotates relative to the front end of the first hinge plate 41, and the rear end of the first hinge plate 41 rotates relative to the front end of the second hinge plate 42, ensuring that the pressure arm 3 can move down smoothly.

[0042] After the edging is completed, motor 6 drives eccentric shaft 31 to rotate in the opposite direction, causing pressure knife 32 to move upward and reset. At the same time, the output end of cylinder 5 retracts, driving pressure knife 32 to move backward and return to its initial position. Through the coordinated operation of the above components, efficient edging of the automotive door frame is achieved.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 car door frame hemming apparatus comprising a support frame (1), characterized in that: It also includes a mold (2), a motor (6), a pressure arm (3), a hinge mechanism (4), and a cylinder (5), among which, The top of the mold (2) is used to fix the door frame to be wrapped, and the rear side is used to fix the support frame (1). The lower end of the pressure arm (3) is rotatably mounted on the bottom of the support frame (1) via an eccentric shaft (31), and the upper end can extend into the inner area of ​​the window of the door frame to be edged and is hinged to the front end of the hinge mechanism (4). A pressure knife (32) is fixed on the front side of the upper end of the pressure arm (3). The cylinder (5) is hinged to the rear side of the support frame (1), and its output end is hinged to the rear end of the hinge mechanism (4). The cylinder (5) drives the hinge mechanism (4) to move the pressure arm (3) forward so that the pressure knife (32) performs a horizontal bending action. The motor (6) is fixed to the bottom of the support frame (1) and is used to drive the eccentric shaft (31) to drive the pressure arm (3) to move downward so that the pressure knife (32) performs a vertical compaction action.

2. An automotive door frame hemming apparatus as defined in claim 1, wherein: The mold (2) is fixed relative to the ground, and an electromagnet (21) is fixed on its inner side.

3. An automotive door frame hemming apparatus as defined in claim 1, wherein: A tool holder (22) is fixed to the front top of the mold (2), wherein, The padding table (22) and the pressing knife (32) are fitted together vertically.

4. An automotive door frame hemming apparatus as defined in claim 1 wherein: The eccentric shaft (31) is horizontally arranged on the left and right sides, and a support plate (11) is provided at each of its two ends. The support plate (11) is fixed on the support frame (1); The eccentric shaft (31) passes through the support plate (11) at corresponding positions at both ends and is rotatably connected; The eccentric shaft (31) has an eccentric part (311) in the middle, and the eccentric part (311) is located between the two support plates (11). The lower end of the pressure arm (3) extends between the two support plates (11) and is rotatably connected to the eccentric part (311).

5. An automotive door frame hemming apparatus as defined in claim 4, wherein: The lower end of the pressure arm (3) is provided with a horizontal mounting groove (301), wherein, The bushing (34) is fixed inside the mounting groove (301) by a pressure plate (33); The bushing (34) is fitted onto the eccentric part (311) and rotatably connected.

6. An automotive door frame hemming apparatus as defined in claim 5 wherein: The pressure plate (33) and the pressure arm (3) are connected by bolts.

7. An automotive door frame hemming apparatus as defined in claim 5 wherein: The pressure plate (33) is provided with a first oil injection hole (3301), and the bushing (34) is provided with a second oil injection hole (3401). The first oil injection hole (3301) is connected to the second oil injection hole (3401).

8. An automotive door frame hemming apparatus as defined in claim 5 wherein: The bushing (34) is divided into two half-shells (341) along the axis.

9. An automotive door frame hemming apparatus as defined in claim 1 wherein: The output end of the motor (6) is fixedly connected to one end of the eccentric shaft (31) via a coupling.

10. An automotive door frame hemming apparatus as defined in claim 1, wherein: The hinge mechanism (4) includes a first hinge plate (41), a second hinge plate (42), and a third hinge plate (43), wherein, The front sides of the first hinge plate (41) are hinged to the upper end of the pressure arm (3) via rotating shafts, and the rear sides are hinged to the front end of the second hinge plate (42) via rotating shafts. The rear ends of the second hinge plate (42) are hinged to the top of the support frame (1) via pivots; One end of the third hinged plate (43) is fixed to the bottom of the rear end of the second hinged plate (42), and the other end is hinged with the output end of the air cylinder (5) through a rotating shaft; The cylinder body of the air cylinder (5) is hinged with the rear side of the support frame (1) through a rotating shaft.

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