Rivet flanging device for fuel tank cap

Abstract

The utility model discloses an oil tank cap rivet flanging device which comprises an L-shaped control cabinet, a lifting air cylinder arranged on the L-shaped control cabinet, a flanging ejector pin driven by the lifting air cylinder in a lifting mode, a tool base arranged on the L-shaped control cabinet and a positioning tool arranged on the tool base. The front end of the L-shaped control cabinet is further provided with a rotary driver which ascends and descends through the lifting air cylinder, and the flanging ejector pin is arranged on the rotary driver. The problems that an upper cover rotating rivet of an existing fuel tank cover with a lock cylinder is difficult to position during flanging and is prone to being damaged in the flanging process can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive fuel tank caps, specifically to a fuel tank cap rivet flange device. Background Technology

[0002] Currently, fuel tank caps with lock cylinders do not have an openable cover. Adding a cover to a fuel tank cap with a lock cylinder requires a rotating rivet. This rivet is a semi-hollow rivet structure, with one end being a hollow tube. After the rivet is inserted into the positioning hole, the hollow tube end needs to be flanged. The fuel tank cap to be flanged is as follows: Figure 3 As shown. However, existing flanging equipment lacks corresponding tooling for fixation, resulting in poor stability of the rivets on the fuel tank cap with lock cylinder during flanging, leading to severe flanging damage. Furthermore, the existing flanging equipment typically uses a cylinder to drive the rivet flanging needle, which presses the needle against the rivet end to create an outward-expanding flanging. However, this direct-impact method easily exacerbates rivet flanging damage. Therefore, it is necessary to modify the drive mechanism and tooling of the existing rivet flanging device to enable flanging of rivets on fuel tank caps with lock cylinders. Summary of the Invention

[0003] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide a fuel tank cap rivet flanging device, which can solve the problems of difficulty in positioning the rotating rivet of the fuel tank cap with lock core during flanging and easy damage during the flanging process.

[0004] To address the aforementioned technical problems, the objective of this application is achieved through the following technical solution:

[0005] A fuel tank cap rivet flanging device, characterized in that: it includes an L-shaped control cabinet, a lifting cylinder mounted on the L-shaped control cabinet, a flanging ejector pin driven by the lifting cylinder, a tooling base mounted on the L-shaped control cabinet, and a positioning tooling mounted on the tooling base, wherein the positioning tooling is provided with a positioning groove, and the front end of the L-shaped control cabinet is also provided with a rotary driver that is lifted by the lifting cylinder, wherein the flanging ejector pin is mounted on the rotary driver.

[0006] Preferably, the rotary driver is a servo motor, and the flange pin is mounted on the rotating shaft of the servo motor.

[0007] Preferably, the L-shaped control cabinet is provided with a guide mechanism for limiting the rotation drive. The rotation drive is connected to the front end of the L-shaped control cabinet through the guide mechanism, and the rotation drive is controlled to move up and down along the guide mechanism.

[0008] Preferably, the guiding mechanism includes two vertically arranged guide rods, a slide seat sleeved on the guide rods, the rotary drive fixed on the slide seat, and the piston rod of the lifting cylinder connected to the slide seat.

[0009] Preferably, a linkage shaft is provided between the flanged ejector pin and the rotary driver.

[0010] Preferably, the linkage shaft and the flanged ejector pin are connected by a thread.

[0011] Preferably, the positioning groove includes an L-shaped slot, a support block disposed in the L-shaped slot, and an arc-shaped limiting groove disposed on the support block. The L-shaped slot forms a stepped groove structure after the support block is installed.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] Compared to existing flanging equipment, targeted adjustments to the positioning fixture enable more precise positioning of the lock cylinder oil tank cap during the flanging process. During flanging, rotating the flanging pin ensures more even force distribution on the hollow end of the rivet. Furthermore, since the rivet is a metal structure, the rotational contact softens the metal, effectively reducing the risk of tearing and breakage during flanging. This results in higher integrity and better uniformity of the flanged rivets. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the flanged state of the flanged ejector pin, oil tank cover, and positioning fixture in this utility model.

[0016] Figure 3 This is an exploded view of the flanged ejector pin, oil tank cover, and positioning fixture in this utility model;

[0017] In the diagram: 1. Tooling base; 2. Positioning tooling; 3. Flanged ejector pin; 4. Linkage shaft; 5. Rotary drive; 6. Lifting cylinder; 7. Slide; 8. Guide rod; 9. Guide mechanism; 10. L-shaped control cabinet; 11. Positioning groove; 12. L-shaped slot; 13. Arc-shaped limit groove; 14. Support block; 20. Top cover; 30. Cover; 40. Rivet. Detailed Implementation

[0018] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] like Figures 1-3 As shown, a fuel tank cap rivet flanging device includes an L-shaped control cabinet 10, a lifting cylinder 6 mounted on the L-shaped control cabinet 10, a flanging ejector pin 3 driven by the lifting cylinder 6, a tooling base 1 mounted on the L-shaped control cabinet 10, and a positioning tooling 2 mounted on the tooling base 1. The positioning tooling 2 is provided with a positioning groove 11. The front end of the L-shaped control cabinet 10 is also provided with a rotary driver 5 that is lifted by the lifting cylinder 6, and the flanging ejector pin 3 is mounted on the rotary driver 5.

[0022] In actual operation, when it is necessary to fold the oil tank cap with rivets 40 installed, the rivets 40 on the oil tank cap with rivets 40 are fixed and positioned by the positioning groove 11. Then, the lifting cylinder 6 controls the rotary driver 5 with the folding top to move downwards. At the same time, the rotary driver 5 is started, so that the folding pin 3 presses and rotates while folding the end of the rivet 40. The folding pin 3 performs the folding action on the rivet 40 during the rotation. Compared with the existing folding equipment, the positioning fixture 2 has been specifically adjusted to make the positioning of the oil tank cap with rivets 40 more accurate during the folding process. During the folding, the rotation of the folding pin 3 can make the force on the hollow end of the rivet 40 more uniform. Since the rivet 40 is a metal structure, the rotation contact can also make the metal soften to a certain extent, thereby effectively reducing the problem of easy tearing and breakage of the rivet 40 during the folding, making the integrity of the folded rivet 40 higher and the uniformity better.

[0023] A further improvement is that the rotary driver 5 is a servo motor, and the flange pin 3 is mounted on the rotating shaft of the servo motor.

[0024] The rotary driver 5 adopts a servo motor structure, which makes it simpler and more convenient to control its speed and start / stop. This facilitates the control of the heating speed at the end of the rivet 40, avoiding problems such as insufficient heat to soften the rivet due to excessively slow speed or excessive heat to cause local melting of the oil tank cap due to excessively fast speed.

[0025] A further improvement is that the L-shaped control cabinet 10 is provided with a guide mechanism 9 for limiting the rotation drive 5. The rotation drive 5 is connected to the front end of the L-shaped control cabinet 10 through the guide mechanism 9, and the rotation drive 5 is controlled to move up and down along the guide mechanism 9.

[0026] Since the rotary drive 5 uses a servo motor and has a large overall weight, directly controlling the lifting and flanging through the lifting cylinder 6 can easily cause axial position deviation, resulting in the inability to guarantee the flanging accuracy. Therefore, a guide mechanism 9 for fixing the rotary drive 5 is installed on the front side of the L-shaped control cabinet 10. The rotary drive 5 can be connected to the L-shaped control cabinet 10 through the guide mechanism 9, so that the rotary drive 5 can be lifted and lowered along the guide mechanism 9 during the lifting and lowering process, further ensuring the running trajectory of the rotary drive 5 and avoiding radial swaying of the rotary drive 5.

[0027] A further improvement is made to the guide mechanism 9, which includes two vertically arranged guide rods 8, a slide block 7 sleeved on the guide rods 8, a rotary drive 5 fixed on the slide block 7, and a piston rod of the lifting cylinder 6 connected to the slide block 7.

[0028] When the rotary drive 5 is raised and lowered, it moves up and down along the two guide rods 8 via the slide 7, which effectively ensures the running trajectory and prevents the rotary drive 5 from swaying radially.

[0029] A further improvement is that a linkage shaft 4 is provided between the flange ejector pin 3 and the rotary driver 5; the linkage shaft 4 and the flange ejector pin 3 are connected by a thread.

[0030] To avoid increasing the operational difficulty by placing the servo motor too close to the oil tank cover during flanging using the flanging ejector pin 3, a linkage shaft 4 is added between the flanging ejector pin 3 and the rotary driver 5. The flanging ejector pin 3 is mounted on the linkage shaft 4, thus providing sufficient operating and visual space for the servo motor and the oil tank cover during operation. The linkage shaft 4 and the flanging ejector pin 3 are connected by a thread, making disassembly and replacement of the flanging ejector pin 3 easier.

[0031] A further improvement is that the positioning groove 11 includes an L-shaped slot 12, a support block 14 disposed in the L-shaped slot 12, and an arc-shaped limiting groove 13 disposed on the support block 14. The L-shaped slot 12 forms a stepped groove structure after the support block 14 is installed.

[0032] In actual operation, one end of the rivet 40 on the fuel tank cap 20 is limited by being embedded in the arc-shaped limiting groove 13. Simultaneously, the mounting base of the rivet 40 is fixed by the bottom support block 14, while the top surface of the cover 30 is limited by the side wall of the L-shaped slot 12. This ensures precise fixation of the fuel tank cap's relative position when the rivet 40 is flanged. The L-shaped slot 12, after the installation of the support block 14, forms a stepped groove structure. The bottom of the L-shaped slot 12, raised by the support block 14, prevents contact with the fuel tank cap.

[0033] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A fuel tank cap rivet flange device, characterized in that: The device includes an L-shaped control cabinet (10), a lifting cylinder (6) mounted on the L-shaped control cabinet (10), a flanged ejector pin (3) driven by the lifting cylinder (6), a tooling base (1) mounted on the L-shaped control cabinet (10), and a positioning tooling (2) mounted on the tooling base (1). The positioning tooling (2) is provided with a positioning groove (11). The front end of the L-shaped control cabinet (10) is also provided with a rotary driver (5) that is lifted by the lifting cylinder (6). The flanged ejector pin (3) is mounted on the rotary driver (5).

2. The fuel tank cap rivet flange device according to claim 1, characterized in that: The rotary driver (5) is a servo motor, and the flange pin (3) is located on the rotating shaft of the servo motor.

3. A fuel tank cap rivet flange device according to claim 1 or 2, characterized in that: The L-shaped control cabinet (10) is provided with a guide mechanism (9) for limiting the rotation drive (5). The rotation drive (5) is connected to the front end of the L-shaped control cabinet (10) through the guide mechanism (9). The rotation drive (5) is lifted and lowered along the guide mechanism (9).

4. The fuel tank cap rivet flange device according to claim 3, characterized in that: The guide mechanism (9) includes two vertically arranged guide rods (8), a slide (7) sleeved on the guide rods (8), the rotary drive (5) is fixed on the slide (7), and the piston rod of the lifting cylinder (6) is connected to the slide (7).

5. The fuel tank cap rivet flange device according to claim 4, characterized in that: A linkage shaft (4) is provided between the flange ejector pin (3) and the rotary driver (5).

6. The fuel tank cap rivet flange device according to claim 5, characterized in that: The linkage shaft (4) and the flange pin (3) are connected by a thread.

7. The fuel tank cap rivet flange device according to claim 1, characterized in that: The positioning groove (11) includes an L-shaped slot (12), a support block (14) disposed in the L-shaped slot (12), and an arc-shaped limiting groove (13) disposed on the support block (14). The L-shaped slot (12) forms a stepped groove structure after the support block (14) is installed.

Images