Multi-stroke multi-moment six-point riveting mechanism

Abstract

The utility model discloses a kind of six-point riveting pressure mechanisms of multi-stroke multi-moment, belong to riveting equipment technical field, including rotating assembly, mounting base, riveting head, rotary connecting component and driving component, and riveting workpiece is placed in mounting base inside, rotating assembly is overturned and connected in mounting base upper end, the one end of several riveting heads is installed in rotating assembly, the other end of riveting head is set in mounting base, riveting head horizontal transmission is in mounting base, and rotary connecting component one part is installed in driving component output end side, and rotary connecting component other part is installed in rotating assembly. Solve the problem that the riveting force is small, the stroke is difficult to control in the prior art, and multiple-point riveting cannot be carried out. Improve riveting efficiency and yield.

Description

Technical Field

[0001] This utility model relates to the field of riveting equipment technology, specifically to a six-point riveting mechanism with multiple strokes and multiple torques. Background Technology

[0002] Riveting is a permanent mechanical joining process, primarily used to fasten two or more parts (usually sheet metal, profiles, or structural components) together. Its core principle is to utilize the plastic deformation of the rivet to create a secure locking structure at the connection holes of the parts.

[0003] Most existing multi-point riveting mechanisms are similar to the principle of multi-claw cylinders, and are mostly driven by pneumatic or hydraulic power. The disadvantages are that the output riveting force is too small, the stroke is difficult to adjust, and the mechanism is unstable, which leads to its limited application in multi-point riveting.

[0004] Therefore, how to provide a six-point riveting mechanism with multiple strokes and multiple torques to solve the defects of existing riveting mechanisms is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides a six-point riveting mechanism with multiple strokes and multiple torques to solve the problem that multi-point riveting cannot be performed in the prior art due to small riveting force and difficulty in controlling the stroke.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a six-point riveting mechanism with multiple strokes and multiple torques, comprising:

[0008] Mounting base, with a press-fitted workpiece placed inside;

[0009] The rotating component is flipped and connected to the upper end of the mounting base;

[0010] A plurality of riveting heads are mounted at one end in the rotating assembly, and at the other end in the mounting base. The riveting heads are horizontally driven in the mounting base.

[0011] The drive component has a portion of a rotary connecting component mounted on its output end side, and the other portion of the rotary connecting component is mounted in the rotary assembly.

[0012] In one possible implementation, the mounting base includes:

[0013] A placement plate with a connector mounted on top, the connector having a circular hole in the center, and the placement plate having several threaded holes;

[0014] A workpiece mounting base is installed in the annular hole, and the press-fit workpiece is mounted on the workpiece mounting base. A rectangular displacement groove is formed on the upper surface of the workpiece mounting base.

[0015] An annular plate is installed on top of the connector. A displacement hole is opened in the annular plate. A rotation space is formed between the annular plate and the connector. The rotating assembly is rotatably connected in the rotation space. The other end of the rotating assembly is placed in the displacement hole. The top of the annular plate is slightly higher than the top of the workpiece mounting base.

[0016] In one possible implementation, the rotating component includes:

[0017] A rotating plate has a circular hole in the middle, which is fitted onto the outside of the workpiece mounting base, and the rotating plate is locked inside the annular plate.

[0018] Several grooves are formed on the rotating plate, and one end of the riveting head is inserted into the groove.

[0019] A toggle plate is installed on the outside of the rotating plate, one end of the toggle plate is connected to the displacement hole, and a part of the rotating connecting member is installed in the toggle plate.

[0020] In one possible implementation, the crimping head includes:

[0021] A displacement block has a top block connected to one end surface and a rectangular insertion block provided at the bottom of the other end, which is inserted into the groove.

[0022] The displacement block is driven and connected in the rectangular displacement groove.

[0023] In one possible implementation, the rotary connecting member includes:

[0024] A floating thrust bearing is installed in the actuating plate;

[0025] A rotating shaft is rotatably connected in the floating thrust bearing, and both ends of the rotating shaft are connected to the driving component.

[0026] In one possible implementation, the driving component includes:

[0027] Servo motor, with an internal drive rod for transmission;

[0028] A connector is installed at the end of the drive rod. The connector has a socket, which is arranged in pairs. Both ends of the rotating shaft are inserted into the socket.

[0029] This invention uses a driving component as the driving source, and the driving component adopts an electric drive. The advantage of electric drive is that the driving force is large and the stroke can be stably controlled. When the driving component adopts horizontal drive, but in combination with the rotating connecting component, the horizontal driving force is converted into rotational force, which causes the rotating component to deflect. During the deflection of the rotating component, it drives the internal riveting head to move towards the riveting workpiece. During the gradual translation, one end of the riveting head will squeeze the rivet, and all the riveting heads can squeeze the rivet synchronously, thereby completing the riveting operation. While improving the riveting efficiency, by controlling the stroke, the workpiece can be prevented from being crushed during the riveting process, thus improving the yield. Attached Figure Description

[0030] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0031] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0032] Figure 1 A perspective view of the six-point riveting mechanism with multiple strokes and multiple torques provided by this utility model;

[0033] Figure 2 Exploded view of the mounting base provided by this utility model;

[0034] Figure 3 Exploded view of the rotating component and the riveting head provided by this utility model;

[0035] Figure 4 A perspective view of the rotary connecting component and the driving component provided by this utility model;

[0036] In the diagram: 1. Rotating component; 11. Circular hole; 12. Rotating plate; 13. Slide groove; 14. Actuating plate; 2. Mounting base; 21. Annular plate; 22. Connector; 23. Placement plate; 24. Threaded hole; 25. Circular hole; 26. Workpiece mounting seat; 27. Displacement hole; 28. Rectangular displacement groove; 3. Press head; 31. Rectangular insert; 32. Displacement block; 33. Top block; 4. Rotating connecting component; 41. Rotating shaft; 42. Floating thrust bearing; 5. Drive component; 51. Servo motor; 52. Drive rod; 53. Connector. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] Please refer to Figures 1-4 The present invention discloses a six-point riveting mechanism with multiple strokes and multiple torques, as follows: Figure 1 It includes a rotating component 1, a mounting base 2, a riveting head 3, a rotating connecting component 4, and a driving component 5. The riveting workpiece is placed inside the mounting base 2. The rotating component 1 is flipped and connected to the upper end of the mounting base 2. One end of several riveting heads 3 is installed in the rotating component 1, and the other end of the riveting heads 3 is set in the mounting base 2. The riveting heads 3 are horizontally driven in the mounting base 2. A part of the rotating connecting component 4 is installed on the output end side of the driving component 5, and the other part of the rotating connecting component 4 is installed in the rotating component 1.

[0039] In a specific embodiment, such as Figure 2The mounting base 2 includes an annular plate 21, a connector 22, a placement plate 23, threaded holes 24, annular holes 25, a workpiece mounting seat 26, a displacement hole 27, and a rectangular displacement groove 28. The connector 22 is mounted on the top of the placement plate 23. The connector 22 has an annular hole 25 in its center. The placement plate 23 has several threaded holes 24. The workpiece mounting seat 26 is installed in the annular hole 25. A press-fit workpiece is mounted on the workpiece mounting seat 26. A rectangular displacement groove 28 is opened on the upper surface of the workpiece mounting seat 26. The annular plate 21 is mounted on the top of the connector 22. The annular plate 21 has a displacement hole 27. A rotation space is formed between the annular plate 21 and the connector 22. A rotating assembly 1 is rotatably connected in the rotation space. The other end of the rotating assembly 1 is placed in the displacement hole 27. The top of the annular plate 21 is slightly higher than the top of the workpiece mounting seat 26. The purpose of setting the annular plate 21 is twofold. First, it raises the connector 22, creating a rotational space between the connector 22 and the workpiece mounting base 26, thereby preventing the rotating assembly 1 from slipping off. The inner ring diameter of the annular plate 21 can be smaller than the outer ring diameter of the rotating plate 12 to prevent the rotating plate 12 from slipping off. However, this has a drawback: the rotating plate 12 must be installed first, and then the annular plate 21 can be installed. Nevertheless, it effectively avoids the slippage problem. The second advantage is that it provides a displacement hole 27, which limits the rotation of the rotating plate 12, thereby preventing the workpiece from being damaged during riveting. Moreover, the annular plate 21 is installed by screw connection, so the annular plate 21 can be replaced at any time to adjust the rotation of the rotating plate 12.

[0040] In this embodiment, the connector 22 is used to place the workpiece mounting base 26, and the placement plate 23 is used to fix the entire mechanism. The fixing method is to use the threaded hole 24 to correspond with the threaded holes in other positions and then fix it with bolts. The annular hole 25 is used to install the workpiece mounting base 26, which is a connector with a central circular hole. It is fixed to the connector 22 by screws. An air pump is also installed in the annular hole 25 to fix the position of the workpiece and prevent it from leaving its original position during riveting. The rectangular displacement groove 28 is set to make the riveting head 3 translate, and at the same time, it can also ensure that the riveting head 3 does not rotate with the rotating component 1.

[0041] In a specific embodiment, such as Figure 3The rotating assembly 1 includes a circular hole 11, a rotating plate 12, a sliding groove 13, and a deflecting plate 14. The rotating plate 12 has a circular hole 11 in the middle, which is sleeved on the outside of the workpiece mounting base 26. The rotating plate 12 is clamped on the inside of the annular plate 21. Several sliding grooves 13 are formed on the rotating plate 12. One end of the riveting head 3 is inserted into the sliding groove 13. The deflecting plate 14 is installed on the outside of the rotating plate 12. One end of the deflecting plate 14 is connected to the displacement hole 27. A part of the rotating connecting component 4 is installed in the deflecting plate 14. The circular hole 11 is designed to expose the workpiece, while the rotating plate 12 is used to drive the riveting head 3 to move horizontally. The horizontal movement is achieved by utilizing the characteristics of the sliding groove 13. The sliding groove 13 has an arc-shaped structure, and one end of the sliding groove 13 is positioned close to the circular hole 11. Furthermore, the rotating plate 12 also has a push groove with the same direction as the sliding groove 13. When the rotating plate 12 rotates, the inner wall of the push groove pushes the riveting head 3 towards the workpiece. At the same time, the rotation of the sliding groove 13 during rotation will position the rectangular insert 31 at the end close to the circular hole 11. When the riveting head 3 cannot rotate, it can only move towards the workpiece. When the rotating plate 12 rotates in the opposite direction, the sliding groove 13 will carry the riveting head 3 away from the workpiece. The actuating plate 14 is an indispensable part of driving the rotation of the rotating plate 12. The circular hole 11 also works with the workpiece mounting base 26 to ensure stable rotation.

[0042] In a specific embodiment, such as Figure 3 The rivet head 3 includes a rectangular insert 31, a displacement block 32, and a top block 33. The top block 33 is connected to one end of the displacement block 32, and the rectangular insert 31 is located at the bottom of the other end of the displacement block 32. The rectangular insert 31 is inserted into the slide groove 13, and the displacement block 32 is connected to the rectangular displacement groove 28. The top block 33 is used to push the rivet, while the rectangular insert 31 is designed to drive the displacement block 32 to translate. The displacement block 32 slides in the rectangular displacement groove 28, preventing the rivet head 3 from rotating. During the riveting process, a cover (not shown in the figure) is placed on the mounting base 2 to prevent the rivet head 3 from detaching.

[0043] In a specific embodiment, such as Figure 4 The rotating connecting component 4 includes a rotating shaft 41 and a floating thrust bearing 42. The floating thrust bearing 42 is installed in the actuating plate 14, and the rotating shaft 41 is rotatably connected in the floating thrust bearing 42. Both ends of the rotating shaft 41 are connected to the driving component 5. The rotating shaft 41 and the floating thrust bearing 42 are common bearings and rotating rods.

[0044] In a specific embodiment, such as Figure 4The driving component 5 includes a servo motor 51, a drive rod 52, and a connector 53. The drive rod 52 is internally connected to the servo motor 51. The connector 53 is installed at the end of the drive rod 52 and has insertion holes arranged in pairs. The two ends of the rotating shaft 41 are inserted into the insertion holes. The servo motor 51 is a rotary motor that drives the drive rod 52 to rotate. The drive rod 52 is a lead screw and is screwed to the output end of the servo motor 51, so that rotation is converted into translation. The electronic control used in the servo motor 51 provides better control over the drive quantity.

[0045] In use, the rivet is installed in the insertion hole, preferably to a depth such that after the workpiece is placed in, the pressing head 3 can be pushed back to its initial position. The workpiece being pressed in the mechanism is sheet metal, and generally the diameter of the rivet hole is smaller than the rivet head. During the pressing process, the rivet head is pressed into the sheet metal, and as the rivet enters, it squeezes out a portion of the metal at the rivet hole location to complete the riveting operation. Before the pressing operation, the workpiece with the rivet is placed on the workpiece mounting base 26. Figure 2 As shown, a suction component is installed in the workpiece mounting base 26. The suction component is generally an air pump. After the workpiece is placed on the workpiece mounting base 26, the air pump is started to draw a vacuum between the air pump and the workpiece. The pressure on the upper surface of the workpiece is greater than that on the lower surface, so that the workpiece is adsorbed on the workpiece mounting base 26 to complete the positioning.

[0046] The servo motor 51 is started, causing the drive rod 52 to move outward. During the translation, the connector 53 carries the rotating shaft 41 and moves it. Utilizing the bearing characteristics of the floating thrust bearing 42, the actuating plate 14 is driven to deflect. During the deflection of the actuating plate 14, the rotating plate 12 rotates clockwise. As the rotating plate 12 rotates clockwise, it pushes all the riveting heads 3 toward the workpiece. In this gradual rotation, the riveting heads 3 squeeze the rivets, completing the riveting operation. After the riveting is completed, the servo motor 51 drives the drive rod 52 to retract, the actuating plate 14 rotates in the opposite direction, and the rotating plate 12 rotates counterclockwise. Utilizing the design of the slide groove 13, the riveting heads 3 are pulled back, i.e., away from the workpiece. Then, the air pump supplies air, allowing air to pass through the gap, making the air pressure on the upper and lower surfaces of the workpiece the same. The limit is then removed, and the workpiece can be removed.

[0047] The advantage of this mechanism is that the advance of the riveting head 3 is controllable, resulting in a wide range of movement for the riveting head 3. This wide range of movement facilitates the installation of various workpiece models. As long as the outer diameter of the workpiece does not exactly abut against the end of the riveting head 3 in its initial state, that is, after the workpiece is installed, a certain amount of leeway should be left for the movement of the riveting head 3. In addition to riveting, the riveting head 3 can also adjust the placement position of the workpiece. Although the workpiece is fixed by negative pressure, it can still be moved to a certain extent. Thus, before riveting, the workpiece can be initially corrected by the synchronous movement of all the riveting heads 3. Another placement method is to install a cylinder at the center of the bottom of the workpiece. The diameter of the cylinder should be exactly equal to the diameter of the circular hole at the center of the workpiece mounting base 26. In this case, the initial correction using the riveting head 3 is not required.

[0048] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A six-point riveting mechanism with multiple strokes and multiple torques, characterized in that, include: Mounting base (2), inside which a press-fit workpiece is placed; The rotating component (1) is flipped and connected to the upper end of the mounting base (2); A plurality of riveting heads (3) are installed at one end in the rotating assembly (1), and at the other end in the mounting base (2). The riveting heads (3) are horizontally driven in the mounting base (2). The drive component (5) has a part of a rotary connecting component (4) installed on its output end side, and the other part of the rotary connecting component (4) is installed in the rotary assembly (1).

2. The six-point riveting mechanism with multiple strokes and multiple torques as described in claim 1, characterized in that, The mounting base (2) includes: The placement plate (23) has a connector (22) installed on the top. The connector (22) has a circular hole (25) in the center. The placement plate (23) has several threaded holes (24). A workpiece mounting base (26) is installed in the annular hole (25). The workpiece mounting base (26) is on which the press-fit workpiece is mounted. A rectangular displacement groove (28) is opened on the upper surface of the workpiece mounting base (26). An annular plate (21) is installed on top of the connector (22). A displacement hole (27) is opened in the annular plate (21). A rotation space is formed between the annular plate (21) and the connector (22). The rotating component (1) is rotatably connected in the rotation space. The other end of the rotating component (1) is placed in the displacement hole (27). The top of the annular plate (21) is slightly higher than the top of the workpiece mounting base (26).

3. The six-point riveting mechanism with multiple strokes and multiple torques as described in claim 2, characterized in that, The rotating component (1) includes: The rotating plate (12) has a round hole (11) in the middle. The round hole (11) is sleeved on the outside of the workpiece mounting base (26). The rotating plate (12) is stuck on the inside of the annular plate (21). Several grooves (13) are formed on the rotating plate (12), and one end of the riveting head (3) is inserted into the groove (13); A toggle plate (14) is installed on the outside of the rotating plate (12). One end of the toggle plate (14) is connected to the displacement hole (27). A portion of the rotating connecting member (4) is installed in the toggle plate (14).

4. The six-point riveting mechanism with multiple strokes and multiple torques as described in claim 3, characterized in that, The riveting head (3) includes: The displacement block (32) has a top block (33) connected to one end surface, and a rectangular insert (31) is provided at the bottom of the other end of the displacement block (32). The rectangular insert (31) is inserted into the slide groove (13). The displacement block (32) is drivenly connected in the rectangular displacement groove (28).

5. The six-point riveting mechanism with multiple strokes and multiple torques as described in claim 3, characterized in that, The rotary connecting member (4) includes: A floating thrust bearing (42) is installed in the actuating plate (14); A rotating shaft (41) is rotatably connected in the floating thrust bearing (42), and both ends of the rotating shaft (41) are connected to the driving component (5).

6. The six-point riveting mechanism with multiple strokes and multiple torques as described in claim 5, characterized in that, The driving component (5) includes: The servo motor (51) has a drive rod (52) internally connected to the transmission. A connector (53) is installed at the end of the drive rod (52). The connector (53) has a socket, which is arranged in pairs. Both ends of the rotating shaft (41) are inserted into the socket.

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