CN117259651A - Riveting mechanism - Google Patents

Abstract

The utility model discloses a riveting mechanism, which relates to the field of riveting processing and comprises a frame and a movable seat which is connected to the frame in a sliding manner, wherein a plurality of rivet placing cylinders are arranged on the movable seat; still include handling subassembly: the carrying assembly is arranged on the movable seat and provided with a first riveting position corresponding to a second position of each rivet placing cylinder; when the movable seat moves downwards, the grabbing component is triggered, and then the carrying component is driven to carry the rivet from the second position to the first position, and then the rivet joints are enabled to move downwards to realize riveting. According to the riveting mechanism provided by the utility model, when the movable seat moves downwards, the carrying assembly moves to be mutually abutted with the stamping workbench surface of the rack, so that the carrying assembly carries the second positions of all rivets to the first position of riveting, the movable seat moves downwards continuously, and the riveting joint on the movable seat applies force to the rivets, so that the riveting is realized.

Description

Riveting mechanism

Technical Field

The utility model relates to riveting processing technology, in particular to a riveting mechanism.

Background

In bulletin number: CN213915939U, bulletin day: 2021.08.10 in the utility model of an automatic riveting mechanism of hollow rivet, the name is that it discloses including arm, riveting mechanism and the hollow rivet that is used for connecting the work piece, the riveting mechanism is the tip at the arm is installed to the straight line, the end of arm is provided with the CCD camera, riveting mechanism includes the mount pad, fixing base and riveting seat, fixing base and mount pad pass through the round pin hub connection, the lower extreme sliding connection of riveting seat and fixing base, a plurality of cylinders have been equipartition between riveting seat and the fixing base, the lower extreme of fixing base is provided with solid location cylinder, the lower extreme of riveting seat is provided with the punching boss with location cylinder matched with, the location cylinder passes from punching boss middle part, the diameter of location cylinder is less than the internal diameter of hollow rivet.

In the above-described riveting apparatus, the rivet is punched by the punching boss to complete the riveting, but before the riveting, the rivet needs to be manually or mechanically placed directly under the punching boss and then punched downward by the punching boss to complete the riveting.

Disclosure of Invention

The present utility model is directed to a riveting mechanism that overcomes the above-mentioned shortcomings of the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

the riveting mechanism comprises a frame and a movable seat which is connected to the frame in a sliding manner, wherein a plurality of rivet placing cylinders are arranged on the movable seat; and also comprises

And (3) carrying the assembly: the carrying assembly is arranged on the movable seat and provided with a first riveting position corresponding to a second position of each rivet placing cylinder;

when the movable seat moves downwards, the grabbing component is triggered, and then the carrying component is driven to carry the rivet from the second position to the first position, and then the rivet joints are enabled to move downwards to realize riveting.

Preferably, the handling assembly comprises a butt column vertically and slidably connected to the movable seat and a plurality of support seats horizontally and slidably connected to the movable seat, a first hinge rod is hinged between each support seat and the butt column, and a first spring is arranged between the movable column and the support seats.

Preferably, the support seat is rotatably connected with a plurality of first arc-shaped clamping blocks, and each first arc-shaped clamping block is fixedly connected with the support seat through a torsion spring.

Preferably, a clamping assembly is arranged at the position, corresponding to each rivet placing cylinder, on the movable seat, and comprises a driving unit and a clamping unit, and the supporting seat abuts against the driving unit in the process of carrying from the second position to the first position.

Preferably, the clamping unit comprises two second arc-shaped clamping blocks which are connected with the rivet placing cylinder in a sliding manner in the radial direction, the driving unit comprises a connecting block which is connected with the rivet placing cylinder in a sliding manner in the radial direction, each second arc-shaped clamping block is arranged on a same-meaning horizontal line, each second arc-shaped clamping block is perpendicular to the connecting block, and a first hinging rod is hinged between each connecting block and each second arc-shaped clamping block.

Preferably, a plurality of hinge seats are slidably connected in the axial direction of the abutting column, each hinge seat is connected with the abutting column through a second spring, a self-locking assembly is arranged between each hinge seat and the abutting column, and the self-locking assembly is unlocked after the second hinge rod rotates to a preset angle.

Preferably, the self-locking assembly comprises a transmission unit and a plug-in unit, and the transmission unit is triggered after the second hinge rod rotates to a preset angle, so that the transmission unit drives the plug-in unit to unlock each hinge seat.

Preferably, each of the plugging units includes fixing seats correspondingly disposed at two sides of each hinge seat, a plugging block is slidably connected on each fixing seat, a third spring is disposed between each plugging block and the fixing seat correspondingly disposed, and each plugging block is used for locking the hinge seat.

Preferably, the transmission unit comprises moving plates which are slidably connected in the radial direction, each moving plate is arranged corresponding to each hinge seat, each moving plate is provided with two second waist-shaped grooves, each fixing seat is provided with a first waist-shaped groove, each plug-in block is fixedly connected with a limit column, and each connecting column is positioned in each first waist-shaped groove and each second waist-shaped groove.

Preferably, the limiting hole is formed in the moving plate, the end portion of the second hinging rod is provided with a protrusion matched with the limiting hole, and then the moving plate is clamped when the transmission rod rotates to a preset angle, so that the moving plate moves to unlock each plug-in block.

In the technical scheme, when the movable seat moves downwards, the carrying assembly moves to be mutually abutted with the stamping workbench surface of the frame, so that the carrying assembly carries the second positions of the rivet rows to the first positions of riveting, the movable seat moves downwards continuously, and the riveting joint on the movable seat applies force to the rivet, so that the riveting is realized.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic diagram of the whole structure of a riveting mechanism according to an embodiment of the present utility model;

fig. 2-2a are schematic views of an installation structure of a support base according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an installation structure of a rivet placing cylinder, according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a mobile seat according to an embodiment of the present utility model;

fig. 5 is a schematic view of an installation structure of a second hinge rod according to an embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of the partial structure of A in FIG. 5 according to an embodiment of the present utility model;

fig. 7-10 are schematic structural views of an abutment post according to an embodiment of the present utility model;

fig. 10-11 are schematic structural diagrams of a support base according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a frame; 1.01, forming holes; 1.1, a movable seat; 1.101, a connecting cylinder; 1.102, a first spring; 1.103, a first chute; 1.10, a supporting table; 1.11, a first hydraulic rod; 1.12, a rivet joint; 1.13, abutment posts; 1.131, mounting groove; 1.132, a second spring; 1.133, hinge base; 1.1330, a clamping groove; 1.134, fixing base; 1.1340, third spring; 1.1341, plug blocks; 1.13410, limit posts; 1.1342, first waist-shaped grooves; 1.135, moving plate; 1.1350, limiting holes; 1.1351, second waist-shaped grooves; 1.4, a supporting seat; 1.140, a first arc-shaped clamping block; 1.1401, a connecting shaft; 1.1402, torsion spring; 1.151, a second arc-shaped clamping block; 1.152, a first hinge lever; 1.153, connecting blocks; 1.2, a second hydraulic rod; 1.6, a second hinging rod; 1.60, bulges; 1.3, a rivet placing cylinder; 1.30, a second chute; 1.31, a fourth spring; 1.32, third chute.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 11a, the present utility model provides a riveting mechanism, comprising a frame 1 and a movable seat 1.1 slidably connected to the frame 1, wherein a plurality of rivet placing cylinders 1.3 are arranged on the movable seat 1.1; and also comprises

And (3) carrying the assembly: the carrying assembly is arranged on the movable seat 1.1 and provided with a first riveting position corresponding to a second position of each rivet placing cylinder 1.3;

when the movable seat 1.1 moves downwards, the grabbing component is triggered, and then the carrying component is driven to carry the rivet from the second position to the first position, and then the rivet joints 1.12 are moved downwards to realize riveting.

Specifically, as shown in fig. 1, the stand 1 includes a riveting working table surface and a moving seat 1.1, the moving seat 1.1 reciprocates in a vertical direction of the stand 1, a plurality of first hydraulic rods 1.11 are fixedly connected between the moving seat 1.1 and a supporting table 1.10, a plurality of riveting heads 1.12 are slidingly connected on the moving seat 1.1, the number of the riveting heads 1.12 and the first hydraulic rods 1.11 is preferably 3, one end of each first hydraulic rod 1.11 is fixedly connected on the supporting table 1.10, the other end of each first hydraulic rod 1.11 is fixedly connected on each riveting head 1.12 corresponding to the first hydraulic rod, the riveting heads 1.12 are arranged in a triangular manner, one or more rivet placing cylinders 1.3 are fixedly connected on the moving seat 1.1, in this embodiment, three riveting heads 1.10 are connected with the stand 1 through second hydraulic rods 1.2, and a forming hole 1.01 is formed in the position of the working table surface corresponding to each riveting head 1.12.

The carrying assembly is slidably connected to the moving seat 1.1, and the carrying assembly is provided with a second position corresponding to each rivet placing cylinder and a first position corresponding to each rivet, and is used for carrying the rivet placed in each rivet placing cylinder 1.3 to the first position corresponding to each rivet joint 1.12, so that the rivet joint 1.12 is punched downwards to rivet, and the carrying assembly converts the linear motion in the vertical direction into the linear motion in the horizontal direction, so that a mechanism capable of converting the linear motion in the vertical direction into the linear motion in the horizontal direction in the prior art is provided with a connecting rod transmission mechanism, and a wedge transmission structure or other mechanisms capable of converting the linear motion in the vertical direction into the linear motion are suitable for the embodiment.

In this embodiment, each first hydraulic rod 1.11 keeps synchronous movement for driving each rivet head 1.12 to synchronously move downwards for riveting, and the second hydraulic rod 1.2 is used for driving the movable seat 1.1 to move downwards, so that in the embodiment, each first hydraulic rod 1.11 and each second hydraulic rod 1.2 are controlled by a PLC.

In the use process, when a user needs to rivet two parts together, the second hydraulic rod 1.2 drives the supporting table 1.10 to move downwards until the grabbing component abuts against the workpiece in the downward moving process, the second hydraulic rod 1.2 continues to move downwards until the carrying component carries the rivets located in the rivet placing cylinders 1.3 to positions corresponding to the rivet joints 1.12 for riveting, and at the moment, the first hydraulic rods 1.11 drive the rivet joints 1.12 to move downwards, so that the rivets rivet the workpieces.

According to the riveting mechanism provided by the utility model, when the movable seat 1.1 moves downwards, the carrying assembly moves to be mutually abutted with the stamping workbench surface of the frame 1, so that the carrying assembly carries the second positions of all rivet rows to the first riveting position, the movable seat 1.1 continuously moves downwards, and the riveting joint 1.12 on the movable seat 1.1 applies force to the rivet, so that the riveting is realized.

Referring to fig. 2-11a, in another embodiment of the present utility model, the handling assembly includes an abutment post 1.13 vertically slidably connected to the movable base 1.1 and a plurality of support bases 1.4 horizontally slidably connected to the movable base 1.1, a first hinge rod 1.152 is hinged between each support base 1.4 and the abutment post 1.13, and a first spring 1.102 is disposed between the movable post and the support base 1.4.

The supporting seat 1.4 is rotatably connected with a plurality of first arc-shaped clamping blocks 1.140, and each first arc-shaped clamping block 1.140 is fixedly connected with the supporting seat 1.4 through a torsion spring 1.1402.

Specifically, as shown in fig. 4, a connecting tube 1.101 is fixedly connected to the center position of the moving seat 1.1, a blind hole matched with the abutting column 1.13 is formed in the axial center position of the connecting tube 1.101, a first spring 1.102 is fixedly connected to the inside of the connecting tube 1.101, the other end of the first spring 1.102 is fixedly connected to the abutting column 1.13, at least three first sliding grooves 1.103 are formed around the moving seat 1.1 in the radial direction of the connecting tube 1.101, as shown in fig. 2a and 11-11a, a first sliding block matched with the first sliding grooves 1.103 is fixedly connected to each supporting seat 1.4, a through hole is formed in the position, away from the first sliding block, of each supporting seat 1.4 in a penetrating mode, a plurality of first arc clamping blocks 1.140 are rotatably connected to each through hole, two opposite sides of each first arc clamping block 1.140 are fixedly connected to a connecting shaft 1.1401, a torsion spring 1.1402 is sleeved on the outside of each connecting shaft 1.1401, one torsion spring 1.1402 is fixedly connected to one torsion spring 3723 corresponding to the other, and the support leg 3723 is fixedly connected to the other leg 374 of the torsion spring.

In the use process, when the second hydraulic rod 1.2 drives the supporting table 1.10 to move downwards, until the grabbing component makes the abutting column 1.13 abut against the workpiece in the downward moving process, and then makes the abutting column 1.13 move towards the vertical upward direction to compress the first spring 1.102, so that the abutting column 1.13 drives each supporting seat 1.4 to move in the moving process, and then the second hydraulic rod 1.2 continues to move downwards until the carrying component carries the rivet positioned in each rivet placing cylinder 1.3 to the position corresponding to each rivet joint 1.12 for riveting, and then each first hydraulic rod 1.11 drives each rivet joint 1.12 to move downwards, and further makes the first arc-shaped clamping block 1.140 turn under the action of each rivet, so that the rivet falls into the workpiece from the supporting table 1.10 for riveting.

Referring to fig. 2-5, in another embodiment, a clamping assembly is disposed on the movable seat 1.1 at a position corresponding to each rivet placing cylinder 1.3, the clamping assembly includes a driving unit and a clamping unit, and the supporting seat 1.4 abuts against the driving unit during the process of moving from the second position to the first position.

Wherein, the clamping unit includes two second arc fixture blocks 1.151 driving units that sliding connection is in rivet setting section of thick bamboo 1.3 radial direction including sliding connection at rivet setting section of thick bamboo 1.3 radial direction connecting block 1.153, each second arc fixture block 1.151 be on the same horizontal line, each second arc fixture block 1.151 sets up with connecting block 1.153 mutually perpendicular, all articulates between connecting block 1.153 and each second arc fixture block 1.151 has a first articulated lever 1.152.

Specifically, a radial direction of each rivet placing cylinder 1.3 on the moving seat 1.1 is provided with two second sliding grooves 1.30 and a third sliding groove 1.32, each second sliding groove 1.30 is located on the same straight line, the third sliding grooves 1.32 and each second sliding groove 1.30 are vertically arranged, a fourth spring 1.31 is fixedly connected in each second sliding groove 1.30, the other end of each fourth spring 1.31 is fixedly connected to a second arc clamping block 1.151, each second arc clamping block 1.151 is in sliding connection with a corresponding second sliding groove 1.30, a connecting block 1.153 is connected in the third sliding groove 1.32 in a sliding manner, a first hinging rod 1.152 is hinged between each second arc clamping block 1.151 and the connecting block 1.153, a driving rod is fixedly connected to the bottom end of the moving seat 1.1, the driving rod is abutted against the connecting block 1.153 in the moving process, and the supporting seat 1.4 is driven by the driving rod in the second rivet placing cylinder 1.3.

In the use process, when the second hydraulic rod 1.2 drives the supporting table 1.10 to move downwards, until the grabbing component makes the abutting column 1.13 abut against the workpiece in the downward moving process, and then makes the abutting column 1.13 move towards the vertical upward direction to compress the first springs 1.102, so that the abutting column 1.13 drives each supporting seat 1.4 to move in the moving process, each supporting seat 1.4 abuts against the connecting block 1.153 correspondingly arranged in the moving process, the connecting block 1.153 moves in the third sliding groove 1.32, and then each second arc-shaped clamping block 1.151 moves towards the position far away from the rivet placing cylinder 1.3 to compress the fourth springs 1.31, and then the rivets drop onto the supporting seats 1.4, until the carrying component carries the rivets positioned in each rivet placing cylinder 1.3 to the positions corresponding to the rivet joints 1.12, and then each first hydraulic rod 1.11 drives each rivet joint 1.12 to move downwards, and then the first arc-shaped clamping blocks are enabled to roll over the workpieces from the first arc-shaped clamping blocks 1.140 to the rivet placing cylinders 1.3, and the workpieces are enabled to roll over downwards from the rivet placing tables to the rivet placing positions 1.10.

Referring to fig. 5-10, in still another embodiment of the present utility model, a plurality of hinge bases 1.133 are slidably connected in an axial direction of the abutment post 1.13, each hinge base 1.133 is connected to the abutment post 1.13 through a second spring 1.132, and a self-locking assembly is disposed between each hinge base 1.133 and the abutment post 1.13, and the self-locking assembly unlocks the self-locking assembly after the second hinge rod 1.6 rotates to a preset angle.

The self-locking assembly comprises a transmission unit and an inserting unit, and the transmission unit is triggered after the second hinging rod 1.6 rotates to a preset angle, so that the transmission unit drives the inserting unit to unlock each hinging seat 1.133.

Each plug-in unit comprises fixed seats 1.134 which are correspondingly arranged on two sides of each hinge seat 1.133, a plug-in block 1.1341 is connected on each fixed seat 1.134 in a sliding manner, a third spring 1.1340 is arranged between each plug-in block 1.1341 and the fixed seat 1.134 which is correspondingly arranged, and each plug-in block 1.1341 is used for locking the hinge seat 1.133.

The transmission unit comprises moving plates 1.135 which are connected in a sliding manner in the radial direction, each moving plate 1.135 is arranged corresponding to each hinge seat 1.133, each moving plate 1.135 is provided with two second waist-shaped grooves 1.1351, each fixing seat 1.134 is provided with a first waist-shaped groove 1.1342, each plug-in block 1.1341 is fixedly connected with a limiting column 1.13410, and each connecting column is positioned in each first waist-shaped groove 1.1342 and each second waist-shaped groove 1.1351.

The limiting hole 1.1350 is formed in the moving plate 1.135, a protrusion 1.60 matched with the limiting hole 1.1350 is arranged at the end part of the second hinging rod 1.6, and then the moving plate is clamped when the transmission rod rotates to a preset angle, so that the moving plate 1.135 moves to unlock each plug-in block 1.1341.

Specifically, as shown in fig. 8, three mounting grooves 1.131 adapted to the hinge seat 1.133 are formed around the abutment column 1.13 in the axial direction, a second spring 1.132 is fixedly connected in each mounting groove 1.131, the other end of each second spring 1.132 is fixedly connected to each hinge seat 1.133 correspondingly arranged, two fixing seats 1.134 are fixedly connected to opposite side walls of each mounting groove 1.131, plug blocks 1.1341 are slidingly connected in each fixing seat 1.134, a first waist-shaped groove 1.1342 is formed in each fixing seat 1.134, limit columns 1.13410 are fixedly connected to each plug block, limit columns 1.13410 are located in the first waist-shaped grooves 1.1342, three moving plates 1.135 are slidingly connected in the radial direction of each abutment column 1.13, each moving plate 1.135 is located at the bottommost end of each mounting groove 1.131 (as shown in fig. 8 a), two second waist-shaped grooves 1.1351 are formed in mirror images on each moving plate 1.135, each second waist-shaped groove is provided with a boss 5648, as shown in fig. 1.3, each second waist-shaped groove is arranged on each second waist-shaped groove 569, a corresponding to each plug seat 1.24 has a corresponding boss 1.60, and is provided with a boss corresponding to each boss 1.60, as shown in fig. 1.60, and has a boss 1.60, and a corresponding boss is provided on each boss 1.60.

In the use process, when a user drives the supporting table 1.10 to move downwards when the second hydraulic rod 1.2 until the grabbing component enables the abutting column 1.13 to abut against a workpiece in the downward moving process, and then the abutting column 1.13 moves towards the vertical upward direction to compress the first spring 1.102, so that the abutting column 1.13 drives each supporting seat 1.4 to move in the moving process, each supporting seat 1.4 abuts against a connecting block 1.153 correspondingly arranged in the supporting seat in the moving process, the connecting block 1.153 moves in the third sliding groove 1.32, and further, each second arc-shaped clamping block 1.151 moves towards a position far away from the rivet placing cylinder 1.3 to compress the fourth spring 1.31, and then a rivet falls onto the supporting seat 1.4;

at this time, the abutting post 1.13 still performs the workpiece, each first hydraulic rod 1.11 drives each rivet joint 1.12 to reset, so that the protrusion 1.60 on each second hinging rod 1.6 rotates to the position corresponding to the bayonet on the moving block, further, the second hinging rod 1.6 is driven to move and can not move in the rotating process, the moving plate 1.135 drives each inserting block 1.1341 correspondingly arranged to move towards the position far away from the mounting groove 1.131, further, each inserting block 1.1341 moves from the clamping groove 1.1330 in the hinging seat 1.133, further, the hinging seat 1.133 moves in the axial direction of the abutting rod, the supporting seat 1.4 moves to the first position of riveting, and further, each first hydraulic rod 1.11 pushes each rivet joint 1.12 to move downwards to rivet the workpiece for riveting forming.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. A riveting mechanism comprises a frame (1) and a movable seat (1.1) which is connected to the frame (1) in a sliding way, and is characterized in that a plurality of rivet placing cylinders (1.3) are arranged on the movable seat (1.1); and also comprises

And (3) carrying the assembly: the carrying assembly is arranged on the movable seat (1.1) and provided with a first riveting position corresponding to a second position of each rivet placing cylinder (1.3);

when the movable seat (1.1) moves downwards, the grabbing component is triggered, and then the carrying component is driven to carry the rivet from the second position to the first position, and then the rivet joints (1.12) move downwards to realize riveting.

2. A riveting mechanism according to claim 1, characterized in that the handling assembly comprises an abutment post (1.13) vertically slidingly connected to the mobile seat (1.1) and a plurality of support seats (1.4) horizontally slidingly connected to the mobile seat (1.1), a first hinging rod (1.152) being hinged between each support seat (1.4) and the abutment post (1.13), a first spring (1.102) being arranged between the mobile post and the support seat (1.4).

3. A riveting mechanism according to claim 2, characterized in that the supporting seat (1.4) is rotatably connected with a plurality of first arc-shaped clamping blocks (1.140), and each first arc-shaped clamping block (1.140) is fixedly connected with the supporting seat (1.4) through a torsion spring (1.1402).

4. A riveting mechanism according to claim 3, characterized in that the moving seat (1.1) is provided with a clamping assembly at a position corresponding to each rivet placing cylinder (1.3), the clamping assembly comprises a driving unit and a clamping unit, and the supporting seat (1.4) abuts against the driving unit during the process of carrying from the second position to the first position.

5. A riveting mechanism according to claim 4, wherein the clamping unit comprises two second arc-shaped clamping blocks (1.151) which are connected in a sliding manner in the radial direction of the rivet placing cylinder (1.3), the driving unit comprises a connecting block (1.153) which is connected in the radial direction of the rivet placing cylinder (1.3), each second arc-shaped clamping block (1.151) is on a same horizontal line, each second arc-shaped clamping block (1.151) is arranged perpendicular to the connecting block (1.153), and a first hinging rod (1.152) is hinged between each connecting block (1.153) and each second arc-shaped clamping block (1.151).

6. A riveting mechanism according to claim 3, characterized in that the abutment post (1.13) is slidably connected with a plurality of hinge seats (1.133) in the axial direction, each hinge seat (1.133) is connected with the abutment post (1.13) by a second spring (1.132), a self-locking assembly is arranged between each hinge seat (1.133) and the abutment post (1.13), and the self-locking assembly is unlocked after the second hinge rod (1.6) rotates to a preset angle.

7. A riveting mechanism according to claim 6, characterized in that the self-locking assembly comprises a transmission unit and a plug-in unit, the transmission unit being triggered when the second hinge rod (1.6) is rotated to a preset angle, so that the transmission unit drives the plug-in unit to unlock each hinge seat (1.133).

8. A riveting mechanism according to claim 7, characterized in that each plugging unit comprises fixing seats (1.134) correspondingly arranged at two sides of each hinging seat (1.133), each fixing seat (1.134) is connected with a plugging block (1.1341) in a sliding manner, a third spring (1.1340) is arranged between each plugging block (1.1341) and each fixing seat (1.134) correspondingly arranged, and each plugging block (1.1341) is used for locking the hinging seat (1.133).

9. The riveting mechanism according to claim 8, wherein the transmission unit comprises moving plates (1.135) slidingly connected in a radial direction, each moving plate (1.135) is arranged corresponding to each hinge seat (1.133), each moving plate (1.135) is provided with two second waist-shaped grooves (1.1351), the fixed seat (1.134) is provided with a first waist-shaped groove (1.1342), each plug-in block (1.1341) is fixedly connected with a limiting column (1.13410), and each connecting column is located in the first waist-shaped groove (1.1342) and the second waist-shaped groove (1.1351).

10. The riveting mechanism according to claim 9, wherein the movable plate (1.135) is provided with a limiting hole (1.1350), and the end of the second hinge rod (1.6) is provided with a protrusion (1.60) adapted to the limiting hole (1.1350), so that the movable plate is clamped when the transmission rod rotates to a preset angle, and the movable plate (1.135) moves to unlock each plug-in block (1.1341).