Connecting rod type turnover mechanism

Abstract

The utility model discloses a connecting rod type turnover mechanism and aims to overcome the defects that an existing connecting rod type turnover mechanism needs to occupy a large space and is difficult to adapt to a complex working environment with a narrow space. The device comprises a driver, a rack, a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is hinged to the rack, the other end of the first connecting rod is hinged to the end of the second connecting rod, the end of the other end of the second connecting rod is hinged to the end of the third connecting rod, and the middle of the third connecting rod is hinged to the rack. The telescopic end of the driver is hinged to the middle of the first connecting rod, the driver drives the third connecting rod to swing between the first station and the second station through the first connecting rod and the second connecting rod, and a limiting movable block attached to the first connecting rod and the third connecting rod at the first station and the second station is arranged on the rack. The turnover device is small in occupied space and large in opening angle, and can be suitable for various complex and narrow working environments.

Description

Technical Field

[0001] The utility model relates to the field of workstation switching, and more specifically, to a connecting rod type turnover mechanism. Background Art

[0002] In automobile manufacturing, there is a need to switch the workstations of processing equipment and to flip the robot in XZ or YZ.

[0003] Conventional crank-connecting rod mechanisms occupy a large space and require a large lateral space, and are not suitable for narrow and complex working environments.

[0004] Chinese patent publication number CN113213113A, named a flip mechanism based on a double rocker connecting rod, discloses a flip mechanism based on a double rocker connecting rod, including a flip plate, a double rocker connecting rod assembly, a sliding limit assembly and a support seat. The double rocker connecting rod assembly includes a connecting rod, a motor for driving the connecting rod to rotate, and a double rocker 1 and a double rocker 2 symmetrically arranged on the front and rear sides of the connecting rod. The upper ends of the double rocker 1 and the double rocker 2 are respectively connected to the front and rear sides of the middle section of the flip plate, and the lower ends are respectively connected to the front and rear ends of the connecting rod. The sliding limit assembly includes a connecting rod and a sliding limit block 1 and a sliding limit block 2 respectively arranged on the left and right ends of the connecting rod. The connecting rod is matched with the connecting rod transmission through a gear. The flip plate is arranged above the support seat, the connecting rod is installed on the support seat, and the sliding limit block 1 and the sliding limit block 2 are respectively matched with the left and right ends of the support seat.

[0005] Similar to the above-mentioned connecting rod flipping structure, a large space is required and it is difficult to adapt to a narrow and complex working environment. The present application aims to provide a connecting rod flipping mechanism to improve the above-mentioned defects. Summary of the invention

[0006] The utility model provides a connecting rod type turning mechanism, which occupies a small space and has a large opening angle and can be applied to various complex and narrow working environments.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A link type flipping mechanism is used to flip a flipping device, including a driver, a frame, a first link, a second link and a third link, one end of the first link is hingedly connected to the frame, and the other end is hingedly connected to the end of the second link, the other end of the second link is hingedly connected to the end of the third link, the telescopic end of the driver is hingedly connected to the middle part of the first link, and the middle part of the third link is hingedly connected to the frame, the driver drives the third link to swing between a first station and a second station through the first link and the second link, the frame is provided with a limiting movable block that fits with the first and third links at the first and second stations, and the third link is fixedly connected to the flipping device.

[0009] The telescopic end of the driver provides a telescopic function, which is connected to the middle section of the first connecting rod so that the first connecting rod rotates around its axis. Compared with the motor-driven rotation of the first connecting rod, the telescopic drive has a certain stroke and is easier to control, while the motor driven in the rotational form requires higher precision and corresponding control programs and circuits, and is more expensive. The limit movable block is used to position the first station and the second station, and assists in stabilizing the flip device at the first station and the second station. The first connecting rod, the second connecting rod and the third connecting rod are hinged at the ends in sequence, and the first connecting rod and the third connecting rod are not connected. In this way, the angle of the first connecting rod is enlarged, so that the swing range of the third connecting rod is larger, thereby reducing the occupied space and increasing the opening angle.

[0010] Preferably, the drive and the frame are rotationally connected.

[0011] Preferably, the first connecting rod is provided with a first station movable limit block and a second station movable limit block, and the frame is provided with a first station fixed limit block and a second station fixed limit block. When the third connecting rod is located at the first station, the first station movable limit block and the first station movable limit block fit together, and when the third connecting rod is located at the second station, the second station movable limit block and the second station fixed limit block fit together. The structure is used to artificially limit the range of motion of the first connecting rod, and also limits the stroke of the telescopic end of the driver, to assist the stability of the flip device at the first station and the second station.

[0012] Preferably, a first station fixed plug block is provided on the frame, and a first station movable slot block is provided at the end of the third connecting rod, and the first station movable slot block is U-shaped. When the third connecting rod is located at the first station, the first station fixed plug block is inserted into the first station movable slot block. In addition to using the end face of the first station movable slot block to limit the stroke, the structure also uses the side wall of the first station movable slot block and the first station fixed plug block for guidance to avoid rotation.

[0013] Preferably, a first station buffer is also included, the first station buffer has a buffer rod and an elastic member, and a first station buffer contact block is provided on the third connecting rod. When the third connecting rod approaches the first station, the buffer rod contacts the first station buffer contact block and overcomes the elastic member to slow down the third connecting rod during the movement of the third connecting rod.

[0014] Preferably, a second station buffer is also included, the second station buffer has a buffer rod and an elastic member, and a second station buffer contact block is provided on the first connecting rod. When the third connecting rod approaches the second station, the buffer rod contacts the second station buffer contact block and overcomes the elastic member to slow down the third connecting rod during the movement of the third connecting rod.

[0015] Preferably, the angle between the first station and the second station is 83°. By connecting the first connecting rod, the second connecting rod and the third connecting rod, the opening angle is enlarged, thereby saving space.

[0016] Preferably, the driver is a cylinder. The cylinder has the advantages of being simple to deploy and control.

[0017] Preferably, the frame is also provided with a first station in-position sensor and a second station in-position sensor for detecting the position of the first connecting rod. The structure realizes closed-loop control, and when the first station in-position sensor and the second station in-position sensor sense that the mechanism has reached its position, the driver is controlled to stop.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The first link, the second link and the third link are hinged at the ends in sequence, wherein the first link and the third link are not connected. In this way, the angle of the first link is enlarged, so that the swing range of the third link is larger, thereby reducing the occupied space and increasing the opening angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the utility model after the frame is removed;

[0022] Figure 3 This is a front view of the utility model after the frame is removed.

[0023] Figure 4 It is a motion schematic diagram of the utility model;

[0024] In the figure:

[0025] Driver 1, frame 2, first connecting rod 3, second connecting rod 4, third connecting rod 5, second station 6, first station 7, first station movable limit block 8, first station fixed limit block 9, second station movable limit block 10, second station fixed limit block 11, first station fixed plug block 12, first station movable slot block 13, first station buffer 14, first station buffer contact block 15, second station buffer 16, second station buffer contact block 17, second station in-position sensor 18, first station in-position sensor 19, and flipping device 20. DETAILED DESCRIPTION

[0026] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] In the present disclosure, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and they cannot be understood as limitations on the present disclosure.

[0030] Example:

[0031] A connecting rod type flip mechanism, reference Figure 1 As shown, the device 20 for flipping the subject to flipping includes a driver 1, a frame 2, a first connecting rod 3, a second connecting rod 4 and a third connecting rod 5. The subject to flipping device 20 is fixedly mounted on the third connecting rod 5.

[0032] In some embodiments, the driver 1 is arranged on the left side, and the frame 2 is arranged on the right side of the driver 1. The driver 1 and the frame 2 are hingedly connected through a bearing and a bearing seat.

[0033] The frame 2 is hingedly connected to one end of the first connecting rod 3. According to the foregoing, the hinge point is located on the right side of the driver 1. The driver 1 is an air cylinder or an oil cylinder, and its telescopic rod can be telescoped along the axial direction of the cylinder seat or the oil cylinder seat. The end of the telescopic rod is fixedly connected with a Y-shaped joint to be hinged with the middle part of the first connecting rod 3. The first connecting rod 3 can swing by the extension and retraction of the telescopic rod. And due to the positional relationship between the driver 1 and the first connecting rod 3, under the premise that the extension and retraction speed of the telescopic shaft is constant, the more the first connecting rod 3 swings to the side away from the driver 1 (the left side), the slower its swinging angular velocity.

[0034] The frame 2 is also provided with a first station in-position sensor 19 and a second station in-position sensor 18 for detecting the position of the first connecting rod 3. The structure realizes closed-loop control, and when the first station in-position sensor 19 and the second station in-position sensor 18 sense that the mechanism has reached its position, the driver 1 is controlled to stop.

[0035] Ginseng Figures 2 to 4 As shown, the end of the other end of the second connecting rod 4 is hinged to the end of the third connecting rod 5, the end of the other end of the second connecting rod 4 is hinged to the end of the third connecting rod 5, and the middle part of the third connecting rod 5 is hinged to the frame 2. The hinge form includes connection through bearings, sleeves, etc., which is not limited in this application.

[0036] The driver 1 drives the third link 5 to swing between the first station 7 and the second station 6 through the first link 3 and the second link 4. The top surface or side wall of the third link 5 is fixedly connected to the receiving flip device 20. The first station 7 and the second station 6 refer to the corresponding positions of the first link 3, the second link 4 and the third link 5 when the receiving flip device 20 is at the limit position of the movement stroke.

[0037] Ginseng Figure 2 , 3 The first connecting rod 3 is provided with a first station movable limit block 8 and a second station movable limit block 10. The frame 2 is provided with a first station fixed limit block 9 and a second station fixed limit block 11. The first station movable limit block 8 and the second station movable limit block 10, the first station 7 fixed limit block and the second station fixed limit block 11 are all located in the swing direction of the first connecting rod 3. When the third connecting rod 5 is located at the first station 7, the first station movable limit block 8 and the first station movable limit block 8 fit together, and when the third connecting rod 5 is located at the second station 6, the second station movable limit block 10 and the second station fixed limit block 11 fit together. The structure is used to artificially limit the range of motion of the first connecting rod 3, and also limits the stroke of the telescopic end of the driver 1, to assist the stability of the flip device 20 at the first station 7 and the second station 6.

[0038] The frame 2 is provided with a first station fixed plug block 12, and the end of the third connecting rod 5 is provided with a first station movable slot block 13, which is U-shaped. When the third connecting rod 5 is located at the first station 7, the first station fixed plug block 12 is inserted into the first station movable slot block 13. In addition to using the end face of the first station movable slot block 13 to limit the stroke, the structure also uses the side wall of the first station movable slot block 13 and the first station fixed plug block 12 for guidance to avoid rotation.

[0039] The reason why the first station fixed plug block 12 and the first station movable slot block 13 are provided is that, during the swinging process to the first station 7, the speed of each connecting rod is the largest. By providing this structure, the positioning effect can be enhanced.

[0040] It also includes a first station buffer 14 and a second station buffer 16. The first station buffer 14 has a buffer rod and an elastic member. The third connecting rod 5 is provided with a first station buffer contact block 15. When the third connecting rod 5 approaches the first station 7, the buffer rod contacts the first station buffer contact block 15 and overcomes the elastic member during the movement of the third connecting rod 5 to decelerate the third connecting rod 5. The second station buffer 16 has a buffer rod and an elastic member. The first connecting rod 3 is provided with a second station buffer contact block 17. When the third connecting rod 5 approaches the second station 6, the buffer rod contacts the second station buffer contact block 17 and overcomes the elastic member during the movement of the third connecting rod 5 to decelerate the third connecting rod 5.

[0041] The first station buffer 14 and the second station buffer 16 buffer the first connecting rod 3 and the third connecting rod 5 in the effort lever state respectively, which is more efficient and has better buffering and vibration reduction effects.

[0042] The angle between the first station 7 and the second station 6 is 83°. By connecting the first connecting rod 3, the second connecting rod 4 and the third connecting rod 5, the opening angle is enlarged, thereby saving space.

[0043] The telescopic end of the driver 1 provides a telescopic function, which is connected to the middle section of the first connecting rod 3 so that the first connecting rod 3 rotates around its axis of rotation. Compared with the rotation of the first connecting rod 3 driven by a motor, the telescopic drive has a certain stroke and is easier to control, while the motor driven by the rotation form requires higher precision and corresponding control programs and circuits, and is more expensive. The limit movable block is used to position the first station 7 and the second station 6, and assists the stability of the flip device 20 at the first station 7 and the second station 6. The first connecting rod 3, the second connecting rod 4 and the third connecting rod 5 are hinged at the ends in turn, and the first connecting rod 3 and the third connecting rod 5 are not connected. In this way, the angle of the first connecting rod 3 is enlarged, so that the swing range of the third connecting rod 5 is larger, thereby reducing the occupied space and increasing the opening angle.

[0044] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A connecting rod type turning mechanism, used for turning over a turning device, characterized in that: The invention comprises a driver, a frame, a first connecting rod, a second connecting rod and a third connecting rod, wherein one end of the first connecting rod is hingedly connected to the frame, and the other end is hingedly connected to the end of the second connecting rod, the end of the other end of the second connecting rod is hingedly connected to the end of the third connecting rod, the middle part of the third connecting rod is hingedly connected to the frame, the telescopic end of the driver is hingedly connected to the middle part of the first connecting rod, the driver drives the third connecting rod to swing between the first station and the second station through the first connecting rod and the second connecting rod, the frame is provided with a limiting movable block which is in contact with the first station and the third connecting rod at the positions of the first station and the second station, and the third connecting rod is fixedly connected to receive the flipping device.

2. A connecting rod type turning mechanism according to claim 1, characterized in that: The drive and the frame are rotationally connected.

3. A connecting rod type turning mechanism according to claim 1, characterized in that: The first connecting rod is provided with a first station movable limit block and a second station movable limit block, and the frame is provided with a first station fixed limit block and a second station fixed limit block. When the third connecting rod is located at the first station, the first station movable limit block and the first station movable limit block are fitted together, and when the third connecting rod is located at the second station, the second station movable limit block and the second station fixed limit block are fitted together.

4. A connecting rod type turning mechanism according to claim 1 or 3, characterized in that: A first station fixed plug block is provided on the frame, and a first station movable slot block is provided at the end of the third connecting rod. The first station movable slot block is U-shaped. When the third connecting rod is located at the first station, the first station fixed plug block is inserted into the first station movable slot block.

5. The connecting rod type turning mechanism according to claim 1, characterized in that: It also includes a first station buffer, which has a buffer rod and an elastic member. A first station buffer contact block is provided on the third connecting rod. When the third connecting rod approaches the first station, the buffer rod contacts the first station buffer contact block and overcomes the elastic member to slow down the third connecting rod during its movement.

6. A connecting rod type turning mechanism according to claim 1 or 5, characterized in that: It also includes a second station buffer, which has a buffer rod and an elastic member. The first connecting rod is provided with a second station buffer contact block. When the third connecting rod approaches the second station, the buffer rod contacts the second station buffer contact block and overcomes the elastic member to slow down the third connecting rod during its movement.

7. The connecting rod type turning mechanism according to claim 1, characterized in that: The angle between the first station and the second station is 83°.

8. A connecting rod type turning mechanism according to claim 1 or 2, characterized in that: The actuator is a pneumatic cylinder.

9. The connecting rod type turning mechanism according to claim 1, characterized in that: The frame is also provided with a first station in-place sensor and a second station in-place sensor for detecting the position of the first connecting rod.

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