Idle swing mechanism

Abstract

The utility model belongs to mechanical device technical field, concretely relates to a stop swing mechanism. Including: crank axle, connecting rod, rocker axle, output shaft, frame board, wherein, the crank axle carries out continuous rotary motion with A place as the center, the connecting rod is connected with the crank axle and is the rotary pair, and the connecting position is recorded as B, the connecting rod is connected with the rocker axle and is the rotary pair, and the connecting position is recorded as C, the rocker axle carries out angular continuous swing with D place as the center, the roller alpha on the rocker axle has two states of contact and separation with the groove beta on the output shaft, and the output shaft carries out angular intermittent swing with E place as the center.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical device technology, specifically relating to a stop-and-swing mechanism. Background Technology

[0002] With the rapid development of electronic control technology, sensors and servo motor technology, purely mechanical devices are gradually being replaced by mechatronic devices. However, in harsh environments, electronic equipment is prone to failure and has high maintenance costs. Therefore, in situations requiring high reliability, low cost and convenient maintenance, purely mechanical devices still have application value. Summary of the Invention

[0003] Purpose of the invention: To provide a stop-and-swing mechanism for applications requiring highly reliable purely mechanical control in harsh environments without complex electronic control, or for low-cost and easy-to-maintain applications.

[0004] Technical solution:

[0005] A stop-and-go oscillation mechanism includes: a crankshaft 1, a connecting rod 2, a rocker shaft 3, an output shaft 4, and a frame plate 5. One end of the crankshaft 1 is mounted on the frame plate 5 via a rolling bearing, and the other end of the crankshaft 1 is connected to a power source, rotating continuously around its own axis A under the drive of the power source. One end of the connecting rod 2 is connected to the middle section of the crankshaft 1 via a rolling bearing, rotating around axis B under the drive of the crankshaft 1. The distance between axis A and axis B is the crank length. The lower end of the rocker shaft 3 is mounted on the frame plate 5 via a rolling bearing with axis D, and the side of the rocker shaft 3 is connected to the other end of the connecting rod 2 via a pin with axis C. The distance between axis C and axis D is the rocker length of the crank-rocker mechanism. The middle section of the output shaft 4 is mounted on the frame plate 5 via a rolling bearing with axis E. The groove β on the side of the output shaft 4 is connected to the side of the rocker shaft 3 via a roller α, and the rocker shaft 3 drives the output shaft 4 to oscillate around axis E via the roller α and the groove β on the output shaft 4.

[0006] Furthermore, the distance between axis A and axis B is 6.1 mm.

[0007] Furthermore, the distance between axis C and axis D is 18mm.

[0008] Furthermore, the length of connecting rod 2 is 63mm.

[0009] Furthermore, the rocker axis 3 rotates 40° from the start position to the limit position.

[0010] Furthermore, the output shaft 4 rotates 29° from the start position to the limit position.

[0011] Beneficial effects:

[0012] 1. When the roller α on the rocker shaft contacts the groove β on the output shaft, the rocker shaft drives the output shaft to oscillate angularly around point E. When the roller α on the rocker shaft disengages from the groove β on the output shaft, the output shaft comes to a stop, with the stopping position maintained by the limiting arc γ on the rocker shaft and the output shaft. This motion characteristic can be applied to automated manufacturing and assembly, packaging and material handling, printing and textile machinery, medical and laboratory equipment, transportation and public facilities, agricultural and engineering machinery, as well as high-temperature / high-dust environments and low-cost solutions. Its core advantages are precise control, high reliability, and energy efficiency.

[0013] 2. By changing the relative positions of A, B, C, and D, the swing angle of the rocker shaft can be altered, thereby changing the swing duration of the output shaft; the dwell time of the output shaft can be changed by altering the relative positions of roller α and groove β. The optimal design solution can be quickly obtained using the motion simulation function of 3D design software. Attached Figure Description

[0014] Figure 1 This is a top view of the pause swing mechanism according to an embodiment of the present utility model;

[0015] Figure 2 This is a perspective view of the pause swing mechanism according to an embodiment of the present utility model.

[0016] Figure 3 This is a schematic diagram of the connection structure between the crankshaft and the connecting rod of this utility model.

[0017] Figure 4 This is a schematic diagram of the connection structure between the connecting rod and the rocker shaft of this utility model.

[0018] Figure 5 This is a schematic diagram of the connection structure between the rocker shaft and the output shaft of this utility model.

[0019] Figure 6 This is a dimensional diagram of the four-bar linkage according to an embodiment of the present invention.

[0020] Figure 7 This is a schematic diagram of the starting position of the swing.

[0021] Figure 8 This is a schematic diagram of the output shaft swing stop position / output shaft stop position.

[0022] Figure 9 This is a schematic diagram of the limit position of the joystick axis.

[0023] Explanation of the markings in the above figures:

[0024] 1-Crankshaft; 2-Connecting rod; 3-Rockshaft; 4-Output shaft; 5-Frame plate.

[0025] α-roller; β-groove; γ-limiting arc.

[0026] A - Crankshaft rotation axis; B - Crankshaft and connecting rod connection point; C - Connecting rod and rocker shaft connection point; D - Rocker shaft rotation axis; E - Output shaft rotation axis. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0028] In the description of this invention, it should be understood that the terms "center", "axial", "vertical", "upper", "lower", "upper end", "bottom end", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0029] like Figure 1 , Figure 2 As shown, the stopping and swinging mechanism of this utility model includes a crankshaft 1, a connecting rod 2, a rocker shaft 3, an output shaft 4, and a frame plate 5. The crankshaft 1 rotates continuously around point A, while simultaneously driving the connecting rod 2 to rotate around point B. The connecting rod 2 drives the rocker shaft 3 to swing continuously in an angular direction around point D. When the roller α on the rocker shaft 3 contacts the groove β on the output shaft 4, the rocker shaft 3 drives the output shaft 4 to swing in an angular direction around point E. When the roller α on the rocker shaft 3 disengages from the groove β on the output shaft 4, the output shaft 4 stops moving, and the stopping position remains unchanged due to the limiting arc γ on the rocker shaft 3 and the output shaft 4.

[0030] The connection between connecting rod 2 and crankshaft 1 is a revolute joint, and the connection position is denoted as B; the connection between connecting rod 2 and rocker shaft 3 is a revolute joint, and the connection position is denoted as C; rocker shaft 3 continuously oscillates angularly around point D; the roller α on rocker shaft 3 and the groove β on output shaft 4 have two states: contact and disengagement; output shaft 4 intermittently oscillates angularly around point E; when the positional relationship of A, B, C, and D satisfies the requirement of driving rocker shaft to continuously oscillate angularly, crankshaft 1 drives connecting rod 2 to rotate around point B, and connecting rod 2 drives rocker shaft 3 to continuously oscillate angularly around point D; when the roller α on rocker shaft 3 contacts the groove β on output shaft 4, rocker shaft 3 drives output shaft 4 to oscillate angularly around point E; when the roller α on rocker shaft 3 disengages from the groove β on output shaft 4, output shaft 4 stops moving, and the stopping position remains unchanged due to the limiting arc γ on rocker shaft 3 and output shaft 4.

[0031] The mechanical linkage of this utility model is mainly located in the following five positions:

[0032] (1) At point A, if Figure 3 As shown, the crankshaft 1 is mounted on the frame plate 5 via rolling bearings. Driven by a power source, the crankshaft 1 rotates continuously around axis A.

[0033] (2) At point B, as Figure 3 As shown, connecting rod 2 is connected to crankshaft 1 through rolling bearings, and rotates around axis B under the drive of crankshaft 1; the distance between axis A and axis B is 6.1mm, which is equivalent to the crank length of the crank-rocker mechanism;

[0034] (3) At point C, such as Figure 4 As shown, the rocker arm shaft 3 is mounted on the frame plate 5 via rolling bearings. The rocker arm shaft 3 is connected to the connecting rod 2 via a pin, and the two rotate relative to each other around axis C.

[0035] (4) At point D, such as Figure 4 As shown, the rocker shaft 3 swings angularly around axis D under the drive of connecting rod 2; the distance of 18mm between axis C and axis D is equivalent to the rocker length of the crank-rocker mechanism.

[0036] (5) At point E, such as Figure 5 As shown, the output shaft 4 is mounted on the frame plate 5 via rolling bearings. The rocker shaft 3 drives the output shaft 4 to oscillate around the axis E via the roller α and the groove β on the output shaft 4.

[0037] The swing angle of the rocker shaft is changed by altering the relative positions of A, B, C, and D, thereby changing the swing duration of the output shaft; the rest duration of the output shaft is changed by altering the relative positions of roller α and groove β.

[0038] Examples of this utility model are shown in the table below and Figures 6 to 9As shown, Table 1 shows the dimensions of the four-bar linkage, Table 2 shows the position angles of the rocker arm and output shaft at each key position, and Table 3 shows the swing angle calculated from the position angles and the ratio of the swing and rest periods of the output shaft. In this example, the swing and rest periods each account for half the time.

[0039] Table 1

[0040]

[0041] Table 2

[0042]

[0043] Table 3

[0044]

[0045] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pause-swinging mechanism, characterized in that, include: The components include a crankshaft (1), connecting rod (2), rocker shaft (3), output shaft (4), and frame plate (5). One end of the crankshaft (1) is mounted on the frame plate (5) via a rolling bearing, and the other end is connected to a power source, rotating continuously around its axis A under the drive of the power source. One end of the connecting rod (2) is connected to the middle section of the crankshaft (1) via a rolling bearing, rotating around axis B under the drive of the crankshaft (1). The distance between axis A and axis B is the crank length. The rocker shaft (3) is located below... The end is mounted on the frame plate (5) via a rolling bearing with axis D. The side of the rocker shaft (3) is connected to the other end of the connecting rod (2) via a pin with axis C. The distance between axis C and axis D is the rocker length of the crank rocker mechanism. The middle section of the output shaft (4) is mounted on the frame plate (5) via a rolling bearing with axis E. The groove β on the side of the output shaft (4) is connected to the side of the rocker shaft (3) via a roller α. The rocker shaft (3) drives the output shaft (4) to swing angularly around axis E via roller α and groove β on the output shaft (4).

2. The pause swing mechanism according to claim 1, characterized in that, The distance between axis A and axis B is 6.1 mm.

3. The pause swing mechanism according to claim 2, characterized in that, The distance between axis C and axis D is 18mm.

4. The pause swing mechanism according to claim 3, characterized in that, The length of the connecting rod (2) is 63mm.

5. The pause swing mechanism according to claim 4, characterized in that, The rocker arm axis (3) rotates 40° from the start position to the limit position.

6. The pause swing mechanism according to claim 5, characterized in that, The output shaft (4) rotates 29° from the start position to the limit position.

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