Pressing rivet transmission mechanism

Abstract

A pressing rivet transmission mechanism comprises a driving unit provided with a motor and a guide wheel connected with the motor, the guide wheel is provided with a guide channel, and the top of the guide wheel is provided with a cam; the transmission unit is provided with a swing assembly movably matched with the cam and a rotary disc connected with the swing assembly; and the pressing rivet carrier is provided with a base body which is coaxially configured with the turntable, a rivet head is arranged on the base body, and a short shaft matched with the guide channel is arranged on the side surface of the base body. According to the pressing rivet transmission mechanism, the whole transmission mechanism is driven by the single motor to operate so as to control the riveting head to rotate, ascend and descend, the structure is simple, transmission is stable, the whole mechanism is exquisite in design and small in occupied space, the riveting head can be rapidly and accurately controlled to complete the pressing rivet action, and rapid resetting can be achieved.

Description

Technical Field

[0001] This application belongs to the technical field of riveting drive, and in particular relates to a riveting drive mechanism. Background Art

[0002] In existing riveting drive mechanisms, generally two sets of motors are provided, one for controlling the lifting of the riveting head and one for controlling the rotation of the riveting head. When the riveting head works, there will be action delays, which will directly lead to riveting jams or inability to brake. At the same time, for installation areas with limited space, the two sets of motors will increase the height and width of the overall structure, directly making the entire device relatively bulky. Moreover, the design of the two sets of motors also requires a large number of other components that cooperate with them, resulting in higher maintenance and installation costs. Summary of the Invention

[0003] This application provides a riveting drive mechanism, which solves the technical problems of complex structure, unstable transmission and high maintenance cost caused by the existing drive mechanism controlled by two motors.

[0004] To solve at least one of the above technical problems, the technical solution adopted in this application is:

[0005] A riveting drive mechanism includes:

[0006] A driving unit, which is provided with a motor and a guide wheel connected to the motor. A guide track is formed on the guide wheel, and a cam is provided at the top of the guide wheel;

[0007] A transmission unit, which is provided with a swing assembly that is movably matched with the cam and a turntable connected to the swing assembly;

[0008] A riveting carrier, which is provided with a base body coaxially arranged with the turntable. The riveting head is configured on the base body, and a short shaft that cooperates with the guide track is provided on the side of the base body;

[0009] The motor can drive the guide wheel to rotate unidirectionally, drive the swing assembly to drive the turntable to rotate through the cam, so as to drive the base body to drive the riveting head to rotate towards the side close to the guide wheel, and make the short shaft engage in the guide track. The short shaft slides along the guide track, which can drive the riveting head to rise first and then fall, and return after riveting is completed.

[0010] Further, a gear that meshes with the output end of the motor is provided at the lower end of the guide wheel; the guide track is arranged above the gear.

[0011] Further, the guide track is configured as a circular curved surface slideway arranged along the height direction of the guide wheel;

[0012] The lowest point and the highest point of the guiding track are located on both axial sides of the guiding wheel and face away from each other.

[0013] Furthermore, the highest point of the guiding track is configured as a semi-circular curved surface that is wound around the axis of the guiding wheel and is interconnected with the curved surface of the lowest point.

[0014] Furthermore, a cam is provided above the guiding track, which is configured as an annular surface with an arc-shaped notch, and the notch is arranged on the same side as the highest point of the guiding track.

[0015] Furthermore, the swing assembly is arranged on the base and includes:

[0016] The first rocker is suspended above the guiding wheel. A guide wheel that is movably matched with the notch is provided below one end of the first rocker, and a curved surface groove is provided on the side surface of the other end.

[0017] The second rocker is provided with an arc surface that is matched with the groove and is pivotally connected to the frame body.

[0018] The lever is pivotally connected to the vertically arranged upright rod. One end is pivotally connected to the second rocker through a pull rod, and the other end is connected to the turntable through a steel wire rope.

[0019] When the cam rotates, it drives the first rocker to swing, and then drives the second rocker to pull the lever to swing through the pull rod. The lever drives the turntable to rotate through the steel wire rope to drive the base body to rotate.

[0020] Furthermore, the upright rod is arranged on the side of the base away from the guiding wheel; the lever is horizontally arranged transversely and its two ends are respectively arranged on both sides of the upright rod; in the lever, the length of the swing arm connected to the pull rod is less than the length of the swing arm connected to the steel wire rope.

[0021] Furthermore, on the base, two elastic members for controlling the reset of the lever and the turntable are also provided. One ends of the two elastic members are jointly fixed on the positioning column;

[0022] On the base, a guide wheel shaft for adjusting the direction of the steel wire rope is also provided. The guide wheel shaft is located between the positioning column and the turntable and is close to the side where the lever is located.

[0023] Furthermore, the other end of the elastic member for controlling the lever is connected to the end of the lever connected to the steel wire rope and is located below the connection point of the steel wire rope; the other end of the elastic member for controlling the turntable is connected to a non-central point in the radius surface of the turntable, and this connection point is located on the side of the turntable close to the motor.

[0024] Further, the turntable is arranged on the side close to the motor; a main shaft located at the central position and a thin shaft located at an eccentric position are provided on the turntable, and both the main shaft and the thin shaft are matched with the base body; the thin shaft is arranged between the riveting head and the main shaft;

[0025] At the end of the suspended section of the base body, a guiding bearing is provided and arranged horizontally outward;

[0026] A vertical lifting guide groove is provided on the side of the positioning column away from the turntable. After the guiding bearing is rotated to its lower side, it can be embedded into the guide groove when rising along its height direction, so as to perform lifting guidance on the base body.

[0027] Adopting a riveting transmission mechanism designed by the present application, a single motor is used to drive the entire transmission mechanism to operate, so as to control the rotation and lifting of the riveting head. The structure is simple and the transmission is stable. The whole mechanism is exquisitely designed and occupies a small space. It can quickly and accurately control the riveting head to complete the riveting action and can also quickly reset. Description of the Drawings

[0028] Figure 1 is a perspective view of the riveting transmission mechanism in the present application;

[0029] Figure 2 is a perspective view of the riveting transmission mechanism from another angle in the present application;

[0030] Figure 3 is a perspective view of the riveting transmission mechanism from another angle in the present application;

[0031] Figure 4 is a side view of the riveting transmission mechanism in the present application;

[0032] Figure 5 is a side view of the riveting transmission mechanism from another angle in the present application;

[0033] Figure 6 is a top view of part of the riveting transmission mechanism before riveting in the present application;

[0034] Figure 7 is a top view of part of the riveting transmission mechanism during riveting in the present application;

[0035] Figure 8 is a bottom perspective view of the structure of the transmission unit in the present application.

[0036] In the figure: Detailed Description of the Embodiment

[0037] The present application will be described in detail below with reference to the drawings and specific embodiments.

[0038] This embodiment provides a riveting transmission mechanism, asFigure 1 As shown in the figure, it includes a base 10, a frame 20, a driving unit 30, a transmission unit 40, and a riveting carrier 50. The driving unit 30, the transmission unit 40, and the riveting carrier 50 are all fixed on the base 10. Among them, the driving unit 30 is provided with a motor 31 and a guide wheel 32 connected to the motor 31. The guide wheel 32 is configured with a loop-shaped curved surface guide path 33 and a cam 34 for driving the swing of the transmission unit 40; the transmission unit 40 is provided with a swing assembly that is movably matched with the cam 34 and a turntable 41 connected to the swing assembly; the riveting carrier 50 is provided with a base body 51 coaxially arranged with the turntable 41. The riveting head 57 is configured at one end of the top surface of the base body 51 away from the turntable 41, and on the side surface of the base body 51 close to the motor 31, a short shaft 52 that cooperates with the guide path 33 is provided. In this application, only one set of motor 31 is provided, which can drive the guide wheel 32 to rotate unidirectionally, drive the swing assembly to drive the turntable 41 to rotate, so as to drive the base body 51 to drive the riveting head 57 to rotate towards the side close to the guide wheel 32, and make the short shaft 52 be stuck in the guide path 33. The guide wheel 32 rotates and drives the short shaft 52 to slide along the guide path 33, which can drive the riveting head 57 to rise first and then fall. After completing the riveting, it moves downward along the guide path 33 and returns to its initial position.

[0039] As shown in FIG. 2, the motor 31 and the guide wheel 32 are fixedly arranged side by side vertically at one end of the base 10. The motor 31 is vertically arranged, and its output end is arranged downward. A gear meshing with the output end of the motor 31 is provided at the lower end of the guide wheel 32; the guide path 33 is configured between the cam 34 and the gear and is arranged around the axial direction of the guide wheel 32. From Figure 1-3 As shown in FIGS. 5, the guide path 33 is configured as a curved surface slideway with a loop-shaped structure arranged along the height direction of the guide wheel 32. That is, the entire slideway is a closed track, and its opening is always arranged outward; its lowest point and highest point are respectively located on both sides of its central axis and are arranged in opposite directions.

[0040] The highest point of the guide path 33 is configured as a semi-circular curved surface structure arranged around the axis of the guide wheel 32. Its two sides are respectively interconnected with the curved surface of the lowest point through downward sliding tracks, thus forming a loop-shaped curved surface guide track. Therefore, while rotating itself, it can move up and down by controlling the short shaft 52, so as to drive the riveting head 57 to perform the riveting action when rising and the separation action when falling. By using a single motor 31 and rotating the guide wheel 32 with a curved surface, not only can the entire transmission mechanism be driven to operate, but also the riveting carrier 50 can be driven to move up and down to control the rotation and lifting of the riveting head 57. The structure is simple and the transmission is stable. The entire mechanism is exquisitely designed and occupies a small space. It can quickly and accurately control the riveting head 57 to complete the riveting action, and can also make it quickly reset through the elastic member 410 in the transmission unit 40.

[0041] As Figure 3, 6 As shown in FIG. -7, the cam 34 is arranged above the guide track 33. It is constructed as an annular surface with an arc-shaped notch, and can be driven by the rotating shaft of the guide wheel 32 to rotate unidirectionally and continuously. Its rotation direction is the same as that of the guide track 33, and the transmission direction is as shown by the black arrow in Figure 6 . It can be seen from Figure 6 that when the riveting is not performed, the riveting carrier 50 and the guide wheel 32 are separated, that is, the riveting carrier 50 is still in a straight line with the motor 31; at this time, the notch is located on the right side of the guide wheel 32, and the guide wheel 411 is embedded in the notch. As shown in Figure 7 , when the riveting operation is performed, the riveting carrier 50 is controlled by the transmission unit 30, and it rotates 90° clockwise from the horizontal state and is in a vertical relationship with the position of the motor. At this time, the notch position has been separated from the guide wheel 411, and the guide wheel 411 is driven by the outer wall surface of the cam 34 to swing. This structure enables the vertically rotating guide wheel 32 to directly transfer the kinetic energy to the rocker 42 arranged horizontally through the cam 34, causing the rocker 42 to swing left and right in the horizontal direction.

[0042] As shown in Figure 3 , the swing assembly is arranged on the base 10 and includes a rocker 32, a rocker 43, a pull rod 44, a lever 45, a steel wire rope 47, an elastic member 410 and a turntable 41. Among them, the rocker 32 is pivotally suspended on the workbench (omitted in the drawing) and is arranged downward above the position of the guide wheel 32 close to the base 10, so that both ends are movably suspended. A guide wheel 411 that is movably matched with the notch is provided on the lower bottom surface of the end of the rocker 32 close to the guide wheel 32, and a curved surface groove 412 is provided on the side surface of the other end of the rocker 32. The cam 34 rotates while contacting the guide wheel 411. When the guide wheel 411 rolls to the notch position, the matching structure is as shown in Figure 6 ; when the guide wheel 411 leaves the notch position, the matching structure is as shown in Figure 7 .

[0043] The rocker 43 is vertically pivotally connected to the frame 20, and its upper end is suspended. An arc surface that is matched with the groove 412 is provided at this end. This arc surface structure is conducive to being driven by the rocker 42, driving the rocker 43 to reciprocate in the vertical direction with its connection point with the frame 20 as the center; that is, the swing kinetic energy in the horizontal direction is transferred to the rocker 43, causing it to swing in the vertical direction.

[0044] The lever 45 is pivotally connected to the vertically arranged upright rod 46. One end of the lever 45 is pivotally connected to the lower end of the second rocker 43 through a pull rod 44 located outside the machine body 20, and the other end is connected to the turntable 41 through a steel wire rope 47. The upright rod 46 is arranged on one side of the base 10 away from the guide wheel 32. The lever 45 is horizontally arranged on the base 10, and its two ends are respectively arranged on both sides of the upright rod 46. The length of the swing arm of the lever 45 connected to the pull rod 44 is less than the length of the swing arm connected to the steel wire rope 47, so that the lever 45 can pull the steel wire rope 47 with a smaller force, and the steel wire rope 47 drives the turntable 41 to rotate, achieving the purpose of pulling the turntable 41 to rotate with a small force. The cam 34 rotates, driving the first rocker 42 to swing, and then driving the second rocker 43 to pull the lever 45 to swing through the pull rod 44. The lever 45 drives the turntable 41 to rotate through the steel wire rope 47, so as to drive the base body 41 to drive the riveting head 57 to rotate.

[0045] As Figure 6 shown, on the base 10, there are also two elastic members 410 for controlling the reset of the lever 45 and the turntable 41. One ends of the two elastic members 410 are jointly fixed on the positioning column 49. The positioning column 49, the central axis of the turntable 41, and the lifting guide groove 56 in the riveting carrier 50 are arranged in the same column in the width direction of the base 10. On the base 10, there is also an idler wheel shaft 48 for adjusting the direction of the steel wire rope 47. The idler wheel shaft 48 is located between the positioning column 49 and the turntable 41 and is arranged close to the side where the lever 45 is located. At the same time, the idler wheel shaft 48 can also be used to adjust the tension of the steel wire rope 47 to ensure that the steel wire rope 47 does not shake when reciprocatingly pulled.

[0046] As Figure 8 shown, the other end of the elastic member 410 for controlling the lever 45 is connected to the end of the lever 45 connected to the steel wire rope 47 and is located below the connection point of the steel wire rope 47. The other end of the elastic member 410 for controlling the turntable 41 is connected to a non - center point on the radius surface in the turntable 41, and this connection point is arranged on the side of the turntable 41 close to the motor 31; the steel wire rope 47 is wound in the card slot in the turntable 41.

[0047] The turntable 41 is arranged on the side close to the motor 31; on the upper end surface of the turntable 41, there is a main shaft 53 placed at its center position and a thin shaft 54 placed at an eccentric position. Both the main shaft 53 and the thin shaft 54 are matched with the through holes on the base body 51; the thin shaft 54 is placed between the riveting head 57 and the main shaft 53; the thin shaft 54 can ensure that the base body 51 does not slide or misalign during rotation driven by the transmission unit 40.

[0048] As Figure 4-5As shown in the figure, at the end of the suspended section of the base body 51, a guiding bearing 55 is provided horizontally and outwardly; at the same time, a vertical lifting guide groove 56 is provided on the side of the positioning column 49 away from the turntable 41. After the guiding bearing 55 is rotated to its lower side, when it rises along its height direction, it can be embedded into its guide groove to horizontally position and lift-guide the base body 51.

[0049] During operation, the motor 31 rotates, and it controls the guiding wheel 32 to rotate clockwise through gear meshing; the cam 34 in the guiding wheel 32 rotates to cause the position of the guide wheel 411 cooperating with it to swing, thereby driving the first rocker 42 to swing horizontally. The first rocker 42 then drives the second rocker 43 to swing vertically, and drives the lever 45 to swing through the pull rod 44 to drive the steel wire rope 47 to pull the turntable 41 to rotate. The turntable 41 rotates to drive the base body 51 to drive the riveting head 54 to rotate 90° from its initial state towards the side close to the guiding wheel 32; at this time, the lowest point in the guiding track 33 is exactly located at the position close to the short shaft 52, the short shaft 52 is embedded in the lowest point of the guiding track 33, and at the same time the guiding bearing 55 is exactly corresponding to the lifting guide groove 56. The guiding wheel 32 continues to rotate, and the guiding track 33 drives the short shaft 52 to rise while rotating; the rise of the short shaft 52 also drives the base body 51 and the riveting head 57 to rise synchronously. Correspondingly, the guiding bearing 55 moves upward along the lifting guide groove 56 to stabilize the safety and stability of the rise of the base body 51. The guiding wheel 32 rotates one week to complete the riveting action, and the short shaft 52 descends to the lowest point along the guiding track 33, and the guiding bearing 55 is separated from the lifting guide groove 56; at this time, the steel wire rope 47 is in a relaxed state, while the elastic members 410 are all in a tensioned state, and the elastic members 410 contract to quickly control the base body 51 to return from the state in contact with the guiding wheel 32 to its initial state. Thus, a riveting process is completed.

[0050] Adopting a riveting transmission mechanism designed by the present application, a single motor is used to drive the entire transmission mechanism to operate to control the rotation and lifting of the riveting head. The structure is simple and the transmission is stable. The entire mechanism is exquisitely designed and occupies a small space. It can quickly and accurately control the riveting head to complete the riveting action and can also quickly reset.

[0051] The above has described the embodiments of the present application in detail. The above content is only the preferred embodiments of the present application and cannot be considered as limiting the implementation scope of the present application. All equivalent changes and improvements made according to the scope of the present application should still fall within the patent coverage scope of the present application.

Claims

1. A riveting transmission mechanism, characterized in that, include: A driving unit, which is provided with a motor and a guide wheel connected to the motor, a guide track is constructed on the guide wheel, and a cam is provided on the top of the guide wheel; A transmission unit, which is provided with a swing assembly movably matched with the cam and a rotating disk connected to the swing assembly; A pressure riveting carrier, which is provided with a base body coaxially arranged with the rotating disk, a rivet head is arranged on the base body, and a short shaft cooperating with the guide path is provided on the side of the base body; The motor can drive the guide wheel to rotate in one direction, and the cam drives the swing assembly to drive the turntable to rotate, so as to drive the base body to drive the rivet head to rotate toward the side close to the guide wheel, and make the short shaft embedded in the guide path. The short shaft slides along the guide path, which can drive the rivet head to rise first and then fall, and return after completing the riveting.

2. The riveting transmission mechanism according to claim 1, characterized in that, The lower end of the guide wheel is provided with a gear meshing with the output end of the motor; the guide path is arranged above the gear and is arranged around the axial direction of the guide wheel.

3. A riveting transmission mechanism according to claim 1 or 2, characterized in that, The guide path is constructed as a meandering curved surface slideway arranged along the height direction of the guide wheel; The lowest point and the highest point of the guide path are located on both sides of the guide wheel axial direction and are arranged opposite to each other.

4. The riveting transmission mechanism according to claim 3, characterized in that, The highest point of the guide path is constructed as a semicircular curved surface arranged around the axis of the guide wheel, which is interconnected with the curved surface at the lowest point.

5. A riveting transmission mechanism according to any one of claims 1-2 and 4, characterized in that, A cam is also arranged above the guide path and is constructed as an annular surface with an arc-shaped notch.

6. The riveting transmission mechanism according to claim 5, wherein, The swing assembly is arranged on a base and comprises: A rocker arm 1 is suspended above the guide wheel, with a guide wheel movably matched with the notch provided below one end thereof and a curved groove provided on the side of the other end; A second rocker, which is provided with an arc surface matching the groove and is pivotally connected to the frame; A lever, which is pivotally connected to a vertically arranged upright pole, one end of which is pivotally connected to the second rocker arm through a pull rod, and the other end of which is connected to the turntable through a steel wire rope; The cam rotates to drive the first rocker arm to swing, and then drives the second rocker arm to swing by pulling the lever through the pull rod. The lever drives the turntable to rotate through the wire rope to drive the base body to rotate.

7. A riveting transmission mechanism according to claim 6, characterized in that, The vertical pole is arranged on a side of the base away from the guide wheel; the lever is arranged horizontally and its two ends are respectively arranged on both sides of the vertical pole; in the lever, the length of the swing arm connected to the pull rod is shorter than the length of the swing arm connected to the wire rope.

8. A riveting drive mechanism according to claim 6 or 7, characterized in that, The base is also provided with two elastic members for controlling the lever and the turntable to reset, and one end of the two elastic members is fixed on the positioning column; An intermediate wheel shaft for adjusting the direction of the steel wire rope is also provided on the base. The intermediate wheel shaft is located between the positioning column and the turntable and close to the side where the lever is located.

9. The riveting drive mechanism according to claim 8, characterized in that, The other end of the elastic member for controlling the lever is connected to one end of the lever connected to the wire rope, and is located below the connection point of the wire rope; the other end of the elastic member for controlling the turntable is connected to a non-center point in the radial surface of the turntable, and the connection point is located on the side of the turntable close to the motor.

10. A riveting transmission mechanism according to claim 9, characterized in that, The turntable is arranged on the side close to the motor; a main shaft placed at the central position and a thin shaft placed at the eccentric position are provided on the turntable, and both the main shaft and the thin shaft are matched with the base body; the thin shaft is placed between the riveting head and the main shaft; At the end of the suspended section of the base body, a guiding bearing arranged horizontally outward is provided; A vertical lifting guide groove is provided on the side of the positioning column away from the turntable. After the guiding bearing is rotated to its lower side, it can be embedded into the guide groove when rising along its height direction to perform lifting guidance on the base body.

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