Automatic rivet pressing mechanism

Abstract

The utility model provides an automatic rivet pressing mechanism, and belongs to the technical field of automobile part manufacturing. Comprising a connecting frame fixedly installed on a rivet pressing machine frame, a tool base is arranged above the connecting frame, a mounting groove allowing a workpiece to be placed is formed in the top wall of the tool base, a receding groove allowing a rivet to be embedded is formed in the mounting groove, and a limiting assembly used for fixing the workpiece is arranged on the tool base; the limiting assembly comprises elastic pieces, limiting parts protruding and extending into the mounting groove are integrally formed on the elastic pieces, the limiting parts on the elastic pieces are used for abutting against the edge of the top wall of the workpiece in the mounting groove, and the elastic pieces are symmetrically arranged on the two sides of the mounting groove. Workpieces are aligned and placed in the mounting grooves, and the limiting parts on the elastic pieces elastically abut against the edges of the upper surfaces of the workpieces, so that the workpieces are prevented from being disengaged from the mounting grooves, and the effect of improving the mounting stability of the workpieces on the tool base is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to an automatic riveting mechanism. Background Technology

[0002] Riveting is a common fastening process in industrial production, often used to connect materials that cannot be welded. In the field of machining, especially in the assembly of large equipment such as automobiles and aircraft, rivets are frequently used. During the riveting process, parts must be correctly and reliably positioned.

[0003] Patent CN218855523U discloses an automatic positioning riveting machine, including a frame and a riveting mechanism. A first riveting mechanism and a second riveting mechanism are arranged at left and right intervals on the frame. The first and second riveting mechanisms are identical. The first riveting mechanism includes: a riveting frame supported on the frame, a riveting seat set on the riveting frame and adapted to a first workpiece, a rivet groove opened in the riveting seat, a first telescopic drive member set on the riveting frame, and a pressure head connected to the first telescopic drive member and located above the rivet groove. The driving positioning mechanism includes: a guide rail, a positioning seat slidably connected to the guide rail, and a drive component set on the frame for driving the positioning seat to move. The first riveting mechanism is set on the positioning seat.

[0004] By driving the riveting mechanism to move to the rivet installation position on the workpiece, the rivets on the workpiece are pressed and fixed onto the workpiece. In order to keep the workpiece stable during the riveting process, a riveting mechanism that can stably position and install the workpiece is needed. Utility Model Content

[0005] In view of the above problems, this utility model provides an automatic riveting mechanism.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] An automatic riveting mechanism is provided, including a connecting frame fixedly installed on a riveting machine frame, a tooling seat provided above the connecting frame, a workpiece placement and mounting groove provided on the top wall of the tooling seat, a clearance groove for rivet embedding provided in the mounting groove, and a limiting component for fixing the workpiece provided on the tooling seat.

[0008] The limiting component includes an elastic sheet. One end of the elastic sheet is fixedly mounted on the tooling base at the edge of the relief groove. An integrally formed limiting part protrudes into the mounting groove on the elastic sheet. The limiting part on the elastic sheet is used to abut against the top wall edge of the workpiece in the mounting groove. Elastic sheets are symmetrically arranged on both sides of the mounting groove.

[0009] Furthermore, a lifting frame is provided above the connecting frame, and a tooling seat is fixedly installed on the lifting seat. The connecting frame is provided with a driving component for driving the lifting seat to move vertically. Several limiting rods are fixedly installed on the bottom wall of the lifting frame, and the bottom end of the limiting rods is used to abut against the top wall of the connecting frame.

[0010] Furthermore, a push rod is vertically provided on the connecting frame, and clearance holes are vertically provided on both sides of the lifting frame located on the tooling seat. A pushing part is integrally formed on the side of the elastic sheet away from the mounting groove. The push rod is vertically and movably inserted into the through hole. When the lifting frame descends, the push rod abuts against the pushing part to push the limiting part into the mounting groove.

[0011] Furthermore, the lifting frame is horizontally spaced with multiple tooling seats for placing different workpieces.

[0012] Furthermore, a sensor is installed in the relief groove inside the tooling base. The sensor identifies the riveting by sensing the depth of the riveting insertion into the relief groove.

[0013] The beneficial effects of this utility model are as follows: When installing press-fit rivets on automotive workpieces, the workpiece is aligned and placed in the mounting groove. The limiting part on the elastic sheet elastically abuts against the upper surface edge of the workpiece, thereby preventing the workpiece from coming out of the mounting groove. Then, the rivet is embedded in the workpiece and the clearance groove. After the press-fit structure on the press-fit machine frame moves to the upper part of the tooling seat, the rivet and the workpiece are squeezed together into one, realizing automatic and stable press-fit installation of the workpiece. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the automatic riveting mechanism according to an embodiment of this application.

[0015] Figure 2 for Figure 1 A magnified view of part A in the diagram.

[0016] Figure 3 This is a partial cross-sectional view of the automatic riveting mechanism according to an embodiment of this application.

[0017] Among them, 1. connecting frame; 2. tooling base; 21. mounting groove; 22. clearance groove; 23. sensor; 3. limiting component; 31. elastic sheet; 32. limiting part; 33. push rod; 34. pushing part; 4. lifting frame; 41. limiting rod; 42. driving cylinder. Detailed Implementation

[0018] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0019] This application discloses an automatic riveting mechanism, referring to... Figure 1 , Figure 2 and Figure 3 The device includes a connecting frame 1 fixedly installed on the riveting machine frame, a tooling base 2 above the connecting frame 1, a workpiece placement and mounting groove 21 on the tooling base 2, the workpiece can be inserted into the mounting groove 21, a clearance groove 22 for rivet insertion is opened on the mounting groove 21, the clearance groove 22 corresponds to the rivet mounting hole on the workpiece, and a limiting component 3 for fixing the workpiece is provided on the tooling base 2, the workpiece is stably fixed on the tooling base 2 by the limiting component 3.

[0020] A riveting structure is slidably mounted on the riveting machine frame. By moving the riveting structure above the tooling base 2, the riveting mechanism fixes the rivet to the workpiece. Specifically, the riveting mechanism includes a hydraulic cylinder, which presses the workpiece and the rivet downwards to connect and fix them. In this embodiment, the limiting component 3 can be an elastic sheet 31. A notch is provided on the tooling base 2 at the edge of the mounting groove 21. The elastic sheet 31 is installed in the notch, with one end connected to the bottom wall of the notch. The movable end of the elastic sheet 31 has an integrally formed limiting part 32 that protrudes into the mounting groove 21. The limiting part 32 on the elastic sheet 31 is used to abut against the top edge of the workpiece in the mounting groove 21. Elastic sheets 31 are symmetrically arranged on both sides of the mounting groove 21. When the workpiece is embedded in the mounting groove 21, it is pressed against the upper edge of the workpiece by the limiting part 32 on the elastic sheet 31, which can effectively prevent the workpiece from shifting or dislodging during the riveting process.

[0021] Furthermore, a lifting frame 4 is provided above the connecting frame 1. The tooling seat 2 is fixedly installed on the lifting seat. The connecting frame 1 is equipped with a driving component for vertically raising and lowering the lifting seat. By vertically raising and lowering the lifting seat, operators or intelligent robotic arms can pick up and place workpieces from the tooling seat 2. The driving component can be a driving cylinder 42, which is fixedly installed on the connecting frame 1. Guide rods are vertically fixedly installed at the four corners of the lifting frame 4, and the guide rods slide through the connecting frame 1. The piston rod of the driving cylinder 42 is connected to the lifting frame 4. Several limiting rods 41 are vertically fixedly installed on the bottom wall of the lifting frame 4. The bottom end of the limiting rod 41 is used to abut against the top wall of the connecting frame 1. The limiting rods 41 can effectively support the lifting frame 4 when it moves to the lowest position, avoiding damage to the driving cylinder 42 during the riveting operation.

[0022] Furthermore, in its normal state, the limiting part 32 of the elastic sheet 31 is retracted into the notch of the tooling seat 2. A linkage component is provided on the connecting frame 1. This linkage component ensures that the lifting frame 4 descends to the state where the limiting rod 41 abuts against the connecting frame 1, at which point the limiting part 32 of the elastic sheet 31 extends into the mounting groove 21 to fix the workpiece. Specifically, the linkage component is a push rod 33, which is vertically fixedly connected to the connecting frame 1. Vertical clearance holes are provided on both sides of the lifting frame 4 located on the tooling seat 2, and the push rod 33 is vertically movably inserted into these holes. A pushing part 34 is integrally formed on the side of the elastic sheet 31 away from the mounting groove 21, and the pushing part 34 extends into the through hole in the projection of the lifting frame 4. When the lifting frame 4 descends, the push rod 33 abuts against the pushing part 34 to push the limiting part 32 into the mounting groove 21, thereby automatically clamping the workpiece using the elastic plate 31. When the lifting frame 4 rises, the push rod 33 moves away from the side of the elastic plate 31, and the elastic plate 31 recovers and retracts into the notch under the action of elastic force, thus releasing the limitation on the workpiece and making it convenient for the staff to remove the workpiece.

[0023] Furthermore, the lifting frame 4 is horizontally spaced with multiple tooling seats 2 for placing different workpieces. Multiple tooling seats 2 can install workpieces of different models, and the riveting processing of multiple workpieces of the car battery box can be integrated on a set of tooling seats 2.

[0024] Furthermore, a sensor 23 is provided in the relief groove 22 inside the tooling base 2. The sensor 23 can sense the distance between the bottom end of the rivet embedded in the relief groove 22 and the sensor 23. The sensor 23 is connected to a computer. The computer identifies the rivet based on the depth of the rivet inserted into the relief groove 22 sensed by the sensor 23, thereby achieving the purpose of error-proof identification of the rivets installed on the tooling base 2.

[0025] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and modifications.

Claims

1. An automatic riveting mechanism, characterized in that: The device includes a connecting frame (1) fixedly installed on the riveting machine frame, a tooling seat (2) is provided above the connecting frame (1), an installation groove (21) for placing workpieces is provided on the top wall of the tooling seat (2), a clearance groove (22) for embedding rivets is provided in the installation groove (21), and a limiting component (3) for fixing workpieces is provided on the tooling seat (2). The limiting component (3) includes an elastic sheet (31). One end of the elastic sheet (31) is fixedly mounted on the tooling base (2) at the edge of the relief groove (22). An integrally formed limiting part (32) protrudes into the mounting groove (21) on the elastic sheet (31). The limiting part (32) on the elastic sheet (31) is used to abut against the top wall edge of the workpiece in the mounting groove (21). Elastic sheets (31) are symmetrically arranged on both sides of the mounting groove (21).

2. The automatic riveting mechanism according to claim 1, characterized in that, A lifting frame (4) is provided above the connecting frame (1). The tooling seat (2) is fixedly installed on the lifting seat. A driving component for driving the lifting seat to rise and fall vertically is provided on the connecting frame (1). Several limiting rods (41) are fixedly installed on the bottom wall of the lifting frame (4). The bottom end of the limiting rod (41) is used to abut against the top wall of the connecting frame (1).

3. The automatic riveting mechanism according to claim 2, characterized in that, A push rod (33) is vertically fixed on the connecting frame (1). The lifting frame (4) has vertical clearance holes on both sides of the tooling seat (2). The elastic sheet (31) has a push part (34) integrally formed on the side away from the mounting groove (21). The push rod (33) is vertically and movably inserted into the through hole. When the lifting frame (4) descends, the push rod (33) abuts against the push part (34) to push the limiting part (32) into the mounting groove (21).

4. An automatic riveting mechanism according to claim 2, characterized in that, The lifting frame (4) is horizontally spaced with multiple tooling seats (2) for placing different workpieces.

5. An automatic riveting mechanism according to claim 4, characterized in that, A sensor (23) is provided in the relief groove (22) inside the tooling base (2). The sensor (23) identifies the riveting by sensing the depth of the riveting extending into the relief groove (22).

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