Positioning mechanism for spin riveter

Abstract

The utility model relates to the field of spin riveter, disclose a positioning mechanism for spin riveter, including base, the top fixedly connected with mounting bracket of base, be provided with spin riveter body on the mounting bracket, the top sliding of base is provided with the sliding seat, be provided with accurate positioning mechanism between sliding seat, mounting bracket and base, the top of sliding seat is provided with fixed platform and rotates, be provided with comprehensive clamping mechanism on the fixed platform, be provided with rotation switching mechanism and locking mechanism between sliding seat and mounting bracket, the front side fixedly connected with controller of mounting bracket, accurate positioning mechanism includes the recess that opens in the top of base with fixedly connected drive motor on the side of base. The utility model has the following advantages and effect: can be to the several riveting points that is the circumference equidistant distribution and carry out the positioning of quick convenient, make the positioning more efficient, improve the efficiency of spin riveting, can accurate positioning simultaneously, guarantee the quality of riveting.

Description

Technical Field

[0001] This utility model relates to the field of riveting machine technology, and in particular to a positioning mechanism for riveting machines. Background Technology

[0002] A riveting machine, also known as a rivet machine, riveting assembly machine, or riveting roll machine, is a new type of riveting equipment developed based on the principle of cold rolling. It is a mechanical device that can rivet items together. In order to facilitate the riveting process of the riveting machine on the workpiece, a positioning mechanism is often installed on the riveting machine to position the workpiece.

[0003] A search revealed a positioning mechanism for a riveting machine with authorization announcement number CN220073167U. The mechanism includes a base, a mounting bracket fixedly mounted on the base, a movable seat located on the right side of the mounting bracket on the base, a connecting seat at the top of the movable seat, a positioning seat fixedly mounted at the top of the connecting seat, two positioning frames on the positioning seat, and sliding plates fixedly mounted at the bottom of each positioning frame. A third threaded rod is rotatably connected inside the positioning seat, and both sliding plates are fitted onto the third threaded rod. A top plate is provided on the upper part of the mounting bracket, and the riveting machine body is fixedly mounted on the top plate.

[0004] However, the positioning mechanism for riveting machines mentioned above still has shortcomings. When riveting round workpieces, it is generally necessary to rivet several rivets at equal intervals around the circumference to securely rivet the items together. However, positioning several rivet points at equal intervals around the circumference is difficult and troublesome, and inaccurate positioning is likely to occur, reducing the quality of riveting. Therefore, we propose a positioning mechanism for riveting machines to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning mechanism for a riveting machine, which can quickly and conveniently position several riveting points distributed at equal intervals around the circumference, making the positioning more efficient and improving the efficiency of riveting. At the same time, it can accurately position and ensure the quality of riveting.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a positioning mechanism for a riveting machine, including a base, a mounting bracket fixedly connected to the top of the base, a riveting machine body disposed on the mounting bracket, a slide block slidably disposed on the top of the base, a precision positioning mechanism disposed between the slide block, the mounting bracket and the base, a fixed platform rotatably disposed on the top of the slide block, a full clamping mechanism disposed on the fixed platform, a rotation switching mechanism and a locking mechanism disposed between the slide block and the mounting bracket, and a controller fixedly connected to the front side of the mounting bracket.

[0007] A further feature of this invention is that the precise positioning mechanism includes a groove formed on the top of the base and a drive motor fixedly connected to one side of the base, as well as a displacement sensor fixedly connected to the inner wall of one side of the mounting bracket. A threaded rod is fixedly connected to the output shaft of the drive motor, and a movable plate is threadedly fitted on the outer side of the threaded rod. The movable plate is fixedly connected to the bottom of the slide. Both the drive motor and the displacement sensor are electrically connected to the controller.

[0008] By adopting the above technical solution, the drive motor is started according to the distance from the riveting position to the workpiece axis. The drive motor drives the rotation of the threaded rod, which in turn drives the lateral movement of the moving plate, slide, and workpiece. This allows for adjustment of the lateral position of the slide and workpiece. The displacement sensor can measure the displacement of the fixed table and workpiece, thereby determining the distance from the riveting position to the workpiece axis. When the required distance is reached, the displacement sensor sends a signal to the controller, which then shuts off the drive motor, thus achieving precise positioning of the riveting point.

[0009] A further feature of this invention is that the full clamping mechanism includes four connecting slots on the top of the fixed platform. The two connecting slots on the left and right sides are rotatably connected to the two connecting slots on the front and rear sides by the same bidirectional lead screw. Two connecting plates are threaded on the outer side of the bidirectional lead screw, and a clamping plate is fixedly connected to the top of the connecting plate.

[0010] By adopting the above technical solution, the workpiece to be riveted is placed on the top of the fixed table, and the two handwheels are rotated. The two handwheels drive the two double-acting screws to rotate, and the double-acting screws drive the two connecting plates and the clamping plates to move closer to each other, thereby clamping and fixing the workpiece in a comprehensive manner and improving the firmness of the fixation.

[0011] A further feature of this invention is that one end of the bidirectional lead screw extends to the outside of the fixed platform and is fixedly connected to a handwheel.

[0012] By adopting the above technical solution, it is convenient to rotate the bidirectional lead screw.

[0013] A further feature of this invention is as follows: the rotation switching mechanism includes a servo motor fixedly connected to the inner wall of the bottom of the slide and a rotating shaft rotatably connected to the top of the slide. A rotating shaft is fixedly connected to the output shaft of the servo motor. An upper plate and a lower plate are fixedly fitted on the outer side of the rotating shaft from top to bottom. A toggle rod is fixedly connected to the top of the lower plate. A grooved wheel is fixedly connected to the lower end of the rotating shaft. The grooved wheel cooperates with the toggle rod. The top of the rotating shaft is fixedly connected to the bottom of the fixed platform. The locking mechanism includes a cylinder fixedly connected to the top of the slide and four slots formed at the bottom of the fixed platform. A tension spring is fixedly connected to the inner wall of the bottom of the cylinder. A lifting plate is fixedly connected to the top of the tension spring. An iron ring is fixedly connected to the top of the lifting plate. An electromagnet is fixedly connected inside the cylinder. The electromagnet and the iron ring abut against each other and attract each other. A locking pin is fixedly connected to the top of the lifting plate. The locking pin is movably engaged in the corresponding slot.

[0014] By adopting the above technical solution, when the next riveting point needs to be riveted, the controller de-energizes the electromagnet, causing it to lose its magnetism. Under the elastic force of the tension spring, the lifting plate and the locking pin move downwards and disengage from the slot, thus preventing the fixed table from locking. Then, the controller activates the servo motor, which drives the rotating shaft, upper and lower plates, and the actuating lever. Because the actuating lever cooperates with the grooved wheel, each rotation of the actuating lever actuates the grooved wheel once, causing the grooved wheel to rotate 90 degrees, thereby allowing the workpiece to be riveted to the next point. The position is rotated to directly below the riveting machine body, and the lever is not aligned with the gap when the groove wheel is turned. Then, the controller shuts off the servo motor and energizes the electromagnet. Under the attraction of the electromagnet, the locking pin moves upward and resets, locking into the moving slot. This locks the fixed table, ensuring stability during riveting and making the riveting more precise. Following the above steps, the riveting points of the workpiece can be riveted one by one. Because the lever turns the groove wheel 90 degrees each time, the four riveting points are distributed in a circumferentially evenly spaced manner, thereby improving the quality of riveting.

[0015] A further feature of this invention is that the upper plate is movably abutted against the outside of the grooved wheel, the lower plate is movably abutted against the bottom of the grooved wheel, and the lower plate, upper plate, and grooved wheel are all disposed within the slide block.

[0016] By adopting the above technical solution, it is convenient to limit the position of the grooved wheel, making its rotation more stable, while protecting the lower plate, upper plate and grooved wheel.

[0017] A further feature of this invention is that the lifting plate is slidably sleeved within the cylinder.

[0018] By adopting the above technical solution, it is convenient to guide the lifting platform.

[0019] The beneficial effects of this utility model are:

[0020] 1. This utility model places the workpiece to be riveted on the top of the fixed table, rotates two handwheels, and the two handwheels drive the rotation of two bidirectional lead screws. The bidirectional lead screws drive the two connecting plates and clamping plates to move closer to each other, thereby clamping and fixing the workpiece in a comprehensive manner and improving the firmness of the fixation.

[0021] 2. This utility model requires the distance from the riveting position to the workpiece axis to be determined. The drive motor is started, which drives the rotation of the threaded rod. The threaded rod drives the lateral movement of the moving plate, slide, and workpiece, thereby adjusting the lateral position of the slide and workpiece. The displacement sensor can measure the displacement of the fixed table and workpiece, thereby measuring the distance from the riveting position to the workpiece axis. When the requirement is met, the displacement sensor sends a signal to the controller, which shuts off the drive motor, thus achieving the purpose of precise positioning of the riveting point.

[0022] 3. When the next riveting point needs to be riveted, the controller de-energizes the electromagnet, causing it to lose its magnetism. Under the elastic force of the tension spring, the lifting plate and the locking pin move downwards and disengage from the slot, thus preventing the fixed platform from locking. Then, the controller activates the servo motor, which drives the rotating shaft, upper and lower plates, and the actuating lever. Because the actuating lever cooperates with the grooved wheel, each rotation of the actuating lever actuates the grooved wheel once, causing the grooved wheel to rotate 90 degrees, thereby positioning the workpiece at the next riveting point. Rotate the lever to directly below the riveting machine body, ensuring the lever is not aligned with the gap created by the grooved wheel. Then, the controller shuts off the servo motor and energizes the electromagnet. Under the electromagnet's attraction, the locking pin moves upward and resets, locking into the movable slot. This locks the fixed platform, ensuring stability during riveting and improving accuracy. Following these steps, each workpiece's riveting point can be riveted. Because the lever rotates the grooved wheel 90 degrees each time, the four riveting points are evenly spaced in a circle, thus improving the quality of the riveting. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0024] Figure 1 A first-view perspective perspective view of a positioning mechanism for a riveting machine proposed in this utility model;

[0025] Figure 2 This is a second-view perspective perspective view of a positioning mechanism for a riveting machine proposed in this utility model;

[0026] Figure 3 This is a perspective view of the rotation switching mechanism of a positioning mechanism for a riveting machine proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the locking mechanism of a positioning mechanism for a riveting machine proposed in this utility model.

[0028] In the diagram, 1. Base; 2. Slide; 3. Mounting bracket; 4. Riveting machine body; 5. Controller; 6. Precision positioning mechanism; 7. Fixed platform; 8. Locking mechanism; 9. Rotation switching mechanism; 10. Handwheel; 11. Two-way lead screw; 12. Connecting plate; 13. Clamping plate; 14. Connecting groove; 61. Displacement sensor; 62. Moving plate; 63. Groove; 64. Threaded rod; 65. Drive motor; 81. Slot; 82. Electromagnet; 83. Locking post; 84. Iron ring; 85. Lifting plate; 86. Tension spring; 87. Cylinder; 91. Servo motor; 92. Rotating shaft; 93. Lower plate; 94. Upper plate; 95. Actuating lever; 96. Grooved wheel; 97. Rotating shaft. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described 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. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] See Figure 1 — Figure 4 This utility model provides a positioning mechanism for a riveting machine, including a base 1, a mounting bracket 3 fixedly connected to the top of the base 1, a riveting machine body 4 mounted on the mounting bracket 3, a slide block 2 slidably mounted on the top of the base 1, a precision positioning mechanism 6 between the slide block 2, the mounting bracket 3 and the base 1, a fixed platform 7 rotatably mounted on the top of the slide block 2, a full clamping mechanism mounted on the fixed platform 7, a rotation switching mechanism 9 and a locking mechanism 8 between the slide block 2 and the mounting bracket 3, and a controller 5 fixedly connected to the front side of the mounting bracket 3.

[0031] Specifically, the precision positioning mechanism 6 includes a groove 63 on the top of the base 1 and a drive motor 65 fixedly connected to one side of the base 1, as well as a displacement sensor 61 fixedly connected to the inner wall of one side of the mounting bracket 3. A threaded rod 64 is fixedly connected to the output shaft of the drive motor 65, and a movable plate 62 is threaded on the outer side of the threaded rod 64. The movable plate 62 is fixedly connected to the bottom of the slide block 2.

[0032] Specifically, both the drive motor 65 and the displacement sensor 61 are electrically connected to the controller 5.

[0033] Specifically, the full clamping mechanism includes four connecting slots 14 on the top of the fixed platform 7. The two connecting slots 14 on the left and right sides and the two connecting slots 14 on the front and rear sides are rotatably connected to the same bidirectional lead screw 11. Two connecting plates 12 are threaded on the outer side of the bidirectional lead screw 11, and a clamping plate 13 is fixedly connected to the top of the connecting plate 12.

[0034] Specifically, one end of the bidirectional lead screw 11 extends to the outside of the fixed platform 7 and is fixedly connected to a handwheel 10.

[0035] Specifically, the rotation switching mechanism 9 includes a servo motor 91 fixedly connected to the inner wall of the bottom of the slide 2 and a rotating shaft 97 rotatably connected to the top of the slide 2. A rotating shaft 92 is fixedly connected to the output shaft of the servo motor 91. An upper plate 94 and a lower plate 93 are fixedly fitted on the outer side of the rotating shaft 92 from top to bottom. A toggle lever 95 is fixedly connected to the top of the lower plate 93. A grooved wheel 96 is fixedly connected to the lower end of the rotating shaft 97. The grooved wheel 96 cooperates with the toggle lever 95. The top end of the rotating shaft 97 is fixedly connected to the bottom of the fixed platform 7.

[0036] Specifically, the upper plate 94 is movably abutted against the outside of the grooved wheel 96, and the lower plate 93 is movably abutted against the bottom of the grooved wheel 96.

[0037] Specifically, the lower plate 93, the upper plate 94, and the grooved wheel 96 are all located inside the slide block 2.

[0038] Specifically, the locking mechanism 8 includes a cylinder 87 fixedly connected to the top of the slide block 2 and four slots 81 opened at the bottom of the fixed platform 7. A tension spring 86 is fixedly connected to the bottom inner wall of the cylinder 87. A lifting plate 85 is fixedly connected to the top of the tension spring 86. An iron ring 84 is fixedly connected to the top of the lifting plate 85. An electromagnet 82 is fixedly connected inside the cylinder 87. The electromagnet 82 and the iron ring 84 abut against each other and attract each other. A locking post 83 is fixedly connected to the top of the lifting plate 85. The locking post 83 is movably locked in the corresponding slot 81.

[0039] Specifically, the lifting plate 85 is slidably sleeved inside the cylinder 87.

[0040] In the initial state of use, the fixed platform 7 and the riveting machine body 4 are coaxially arranged. The workpiece to be riveted is placed on the top of the fixed platform 7. The two handwheels 10 are rotated, which drive the two bidirectional lead screws 11 to rotate. The bidirectional lead screws 11 drive the two connecting plates 12 and the clamping plate 13 to move closer to each other, thereby clamping and fixing the workpiece in a comprehensive manner and improving the firmness of the fixation. The drive motor 65 is started according to the distance from the riveting position to the workpiece axis. The drive motor 65 drives the threaded rod 64 to rotate, which drives the moving plate 62, the slide 2 and the workpiece to move laterally, thereby adjusting the lateral position of the slide 2 and the workpiece. The displacement sensor 61 can measure the displacement of the fixed platform 7 and the workpiece, thereby measuring the distance from the riveting position to the workpiece axis. When the requirement is met, the displacement sensor 61 sends a signal to the controller 5, and the controller 5 shuts off the drive motor 65, thereby achieving the purpose of precise positioning of the riveting point. Then, the riveting machine body 4 performs the riveting operation on the workpiece.

[0041] When the next riveting point needs to be riveted, the controller 5 de-energizes the electromagnet 82, causing it to lose its magnetism. Under the elastic force of the tension spring 86, the lifting plate 85 and the locking pin 83 move downwards and disengage from the locking slot 81, thus preventing the fixed platform 7 from locking. Then, the controller 5 activates the servo motor 91, which drives the rotating shaft 92, the upper and lower plates, and the actuating lever 95. Because the actuating lever 95 cooperates with the grooved wheel 96, each rotation of the actuating lever 95 actuates the grooved wheel 96 once, causing the grooved wheel 96 to rotate 90 degrees, thereby moving the workpiece to the next riveting point. The device is rotated to be directly below the riveting machine body 4, and the lever 95 is not aligned with the gap when the groove wheel 96 is turned. Then, the controller 5 shuts off the servo motor 91 and energizes the electromagnet 82. Under the attraction of the electromagnet 82, the locking pin 83 moves upward and resets, locking into the movable slot 81, thereby locking the fixed table 7 to ensure stability during riveting and improve riveting precision. Following the above steps, the riveting points of the workpiece can be riveted one by one. Because the lever 95 turns the groove wheel 96 90 degrees each time, the four riveting points are distributed in a circumferentially evenly spaced manner, thereby improving the quality of riveting.

Claims

1. A positioning mechanism for a riveting machine, characterized in that, Includes a base (1), a mounting bracket (3) is fixedly connected to the top of the base (1), a riveting machine body (4) is provided on the mounting bracket (3), a slide (2) is slidably provided on the top of the base (1), a precision positioning mechanism (6) is provided between the slide (2), the mounting bracket (3) and the base (1), a fixed platform (7) is rotatably provided on the top of the slide (2), a full clamping mechanism is provided on the fixed platform (7), a rotation switching mechanism (9) and a locking mechanism (8) are provided between the slide (2) and the mounting bracket (3), and a controller (5) is fixedly connected to the front side of the mounting bracket (3).

2. The positioning mechanism for a riveting machine according to claim 1, characterized in that: The precision positioning mechanism (6) includes a groove (63) on the top of the base (1) and a drive motor (65) fixedly connected to one side of the base (1), and a displacement sensor (61) fixedly connected to the inner wall of one side of the mounting bracket (3). A threaded rod (64) is fixedly connected to the output shaft of the drive motor (65). A movable plate (62) is threaded on the outer side of the threaded rod (64). The movable plate (62) is fixedly connected to the bottom of the slide (2).

3. The positioning mechanism for a riveting machine according to claim 2, characterized in that: The drive motor (65) and displacement sensor (61) are both electrically connected to the controller (5).

4. The positioning mechanism for a riveting machine according to claim 1, characterized in that: The full clamping mechanism includes four connecting slots (14) on the top of the fixed platform (7). The two connecting slots (14) on the left and right sides and the two connecting slots (14) on the front and rear sides are rotatably connected to the same bidirectional lead screw (11). The outer side of the bidirectional lead screw (11) is threaded with two connecting plates (12). The top of the connecting plate (12) is fixedly connected with a clamping plate (13).

5. A positioning mechanism for a riveting machine according to claim 4, characterized in that: One end of the bidirectional lead screw (11) extends to the outside of the fixed platform (7) and is fixedly connected to a handwheel (10).

6. A positioning mechanism for a riveting machine according to claim 1, characterized in that: The rotation switching mechanism (9) includes a servo motor (91) fixedly connected to the inner wall of the bottom of the slide (2) and a rotating shaft (97) rotatably connected to the top of the slide (2). A rotating shaft (92) is fixedly connected to the output shaft of the servo motor (91). An upper plate (94) and a lower plate (93) are fixedly fitted on the outer side of the rotating shaft (92) from top to bottom. A toggle rod (95) is fixedly connected to the top of the lower plate (93). A grooved wheel (96) is fixedly connected to the lower end of the rotating shaft (97). The grooved wheel (96) cooperates with the toggle rod (95). The top end of the rotating shaft (97) is fixedly connected to the bottom of the fixed platform (7).

7. A positioning mechanism for a riveting machine according to claim 6, characterized in that: The upper plate (94) is movably abutted against the outside of the grooved wheel (96), and the lower plate (93) is movably abutted against the bottom of the grooved wheel (96).

8. A positioning mechanism for a riveting machine according to claim 6, characterized in that: The lower plate (93), upper plate (94) and groove wheel (96) are all located inside the slide (2).

9. A positioning mechanism for a riveting machine according to claim 1, characterized in that: The locking mechanism (8) includes a cylinder (87) fixedly connected to the top of the slide (2) and four slots (81) opened at the bottom of the fixed platform (7). A tension spring (86) is fixedly connected to the inner wall of the bottom of the cylinder (87). A lifting plate (85) is fixedly connected to the top of the tension spring (86). An iron ring (84) is fixedly connected to the top of the lifting plate (85). An electromagnet (82) is fixedly connected inside the cylinder (87). The electromagnet (82) and the iron ring (84) abut against each other and attract each other. A locking post (83) is fixedly connected to the top of the lifting plate (85). The locking post (83) is movably locked in the corresponding slot (81).

10. A positioning mechanism for a riveting machine according to claim 9, characterized in that: The lifting plate (85) is slidably sleeved inside the cylinder (87).

Images