Five-bar linkage device

Abstract

This utility model relates to the field of linkage drive equipment technology, and in particular to a five-bar linkage device, which includes a first link, a second link, a third link, a fourth link, and a fifth link of different lengths. One end of the first link is hinged to a ladle, and the other end of the first link is fixedly connected to one end of the third link. The other end of the third link is hinged to one end of the fifth link, and the other end of the fifth link is hinged to one end of the second link. The other end of the second link is fixedly connected to the first link, and the other end of the second link is located between the ends of the third link. One end of the fourth link is hinged to the second link, and the other end of the fourth link is fixed to the output shaft of a drive motor. One drive motor drives multiple links to rotate, thereby realizing the reciprocating motion of the ladle between the soup-pouring station and the soup-retrieving station. The swinging motion between each link can achieve different motion trajectories. The structure is compact, easier to install and debug, and more compatible.

Description

Technical Field

[0001] This utility model relates to the field of linkage drive equipment technology, and in particular to a five-bar linkage device. Background Technology

[0002] In squeeze casting, the casting equipment and the crucible furnace are separate. A molten metal (aluminum alloy molten metal) needs to be injected from the crucible furnace into the casting equipment via a ladle. The specific steps are: the ladle's robotic arm moves, carrying a ladle to the surface of the molten aluminum alloy; the ladle then rotates to scoop up a spoonful of molten aluminum alloy. However, the trajectory of a conventional ladle at the scooping and pouring positions is often affected by various obstacles on the die-casting equipment. This often requires horizontal and vertical adjustments of the ladle to overcome these obstacles, resulting in cumbersome installation and debugging, and poor compatibility. Utility Model Content

[0003] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide a five-bar linkage device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A five-bar linkage includes a first link, a second link, a third link, a fourth link, and a fifth link of different lengths. One end of the first link is hinged to a ladle, and the other end of the first link is fixedly connected to one end of the third link. The other end of the third link is hinged to one end of the fifth link, and the other end of the fifth link is hinged to one end of the second link. The other end of the second link is fixedly connected to the first link and is located between the ends of the third link. One end of the fourth link is hinged to the second link, and the other end of the fourth link is fixed to the output shaft of a drive motor. The drive motor drives the fourth link to rotate forward and backward around its other end, thereby causing the first link, the second link, the third link, and the fifth link to swing, so that the ladle reciprocates between the soup-pouring station and the soup-retrieving station.

[0006] By adopting the above technical solution, a single drive motor rotates multiple connecting rods to achieve the reciprocating motion of the ladle between the soup-pouring and soup-retrieving stations. This results in a compact structure and lower cost. The first, second, third, fourth, and fifth connecting rods are all of different lengths, and the joint positions connecting each rod are different, allowing for different motion trajectories. This makes installation and debugging more convenient, suitable for various environments and die-casting machines of different specifications, offering greater compatibility and lower cost.

[0007] Furthermore, a first pivot and a second pivot protrude from the side of the first connecting rod, and the other end of the second connecting rod is fitted and fixed to the circumference of the first pivot. One end of the third connecting rod is fitted and fixed to the circumference of the second pivot. A third pivot and a fourth pivot protrude from one side of the second connecting rod, and the third pivot is positioned between the fourth pivot and the first pivot. One end of the fourth connecting rod is fitted and fixed to the circumference of the third pivot, and the other end of the fifth connecting rod is fitted and fixed to the circumference of the fourth pivot. The other end of the third connecting rod protrudes from the fifth pivot, and the other end of the fifth connecting rod is fitted to the circumference of the fifth pivot. This design avoids interaction between the operating links and makes installation and disassembly more convenient.

[0008] Furthermore, the second link and the third link are connected to one side of the first link and are coplanar. The first link, the fourth link, and the fifth link are all located on the same side of the second link and are staggered, which effectively saves space.

[0009] Furthermore, the distance between the third and fourth rotating shafts is smaller than the distance between the third and first rotating shafts, which reduces the space required for the fourth link to swing and improves compatibility.

[0010] Furthermore, the distance between the first rotating shaft and the second rotating shaft is smaller than the distance between the first rotating shaft and the ladle, which reduces the swing range of the third link and the second link, thereby adapting to more complex working spaces and having higher compatibility.

[0011] Furthermore, the length of the fifth link is less than the distance between the other end of the second link and the end of the third link, thus extending the length of the third link driven by the second link as a fulcrum, thereby reducing the driving force required to swing the first link and making it easier to use.

[0012] Furthermore, the other end of the third link protrudes from the fifth link, and a counterweight is provided at the other end of the third link, which can improve the balance and stability of the overall swing process and effectively prevent the soup from spilling out of the ladle due to shaking.

[0013] Furthermore, the fourth link has a concave groove on the side facing the fifth link. The groove is an arc-shaped concave structure, which is designed to avoid misalignment, making the structure more compact and improving space utilization.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] This invention uses a single drive motor to rotate multiple connecting rods, enabling the ladle to reciprocate between the soup-pouring and soup-retrieving stations. The structure is compact and cost-effective. The first, second, third, fourth, and fifth connecting rods are all of different lengths, and the joint positions connecting each rod are different, allowing for different motion trajectories. Installation and debugging are more convenient, and it is suitable for various environments and die-casting machines of different specifications, offering greater compatibility and lower cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of one embodiment of the five-bar linkage of this utility model.

[0017] Figure 2 This is a schematic diagram of the trajectory structure before and after operation of an embodiment of the five-bar linkage device of this utility model.

[0018] Explanation of the reference numerals in the figure:

[0019] 1. Five-bar linkage; 2. First link; 21. First pivot; 22. Second pivot; 3. Second link; 31. Third pivot; 32. Fourth pivot; 4. Third link; 41. Fifth pivot; 42. Counterweight; 5. Fourth link; 51. Groove; 52. Fulcrum; 6. Fifth link; 7. Ladle; 8. Soup pouring station; 9. Soup retrieval station; 10. Motion trajectory. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0021] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 utility model 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, the above terms should not be construed as limitations on this utility model.

[0022] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0023] The following is in conjunction with the appendix Figure 1-2 The embodiments of this utility model will be described in further detail below.

[0024] A five-bar linkage 1, such as Figure 1 , Figure 2 As shown, it includes a first link 2, a second link 3, a third link 4, a fourth link 5, and a fifth link 6 of different lengths. One end of the first link 2 is hinged to the ladle 7, and the other end of the first link 2 is fixedly connected to one end of the third link 4. The other end of the third link 4 is hinged to one end of the fifth link 6, and the other end of the fifth link 6 is hinged to one end of the second link 3. The other end of the second link 3 is fixedly connected to the first link 2, and the other end of the second link 3 is located between the ends of the third link 4 and the first link 5. One end of the fourth link 5 is hinged to the second link 3, and the other end of the fourth link 5 is fixed to the output shaft of the drive motor. The drive motor is used to drive the fourth link 5 to rotate forward and backward based on the other end of the fourth link 5 as the axis, so as to drive the first link 2, the second link 3, the third link 4, and the fifth link 6 to swing, so that the ladle 7 reciprocates between the soup pouring station 8 and the soup scooping station 9. The drive motor is not shown in the figure.

[0025] The five-bar linkage 1 uses a drive motor to rotate multiple links, enabling the ladle 7 to reciprocate between the soup pouring station 8 and the soup scooping station 9. It features a compact structure and lower cost. The first link 2, second link 3, third link 4, fourth link 5, and fifth link 6 are all of different lengths, and the joint positions connecting each link are different, allowing for different motion trajectories 10. This makes installation and debugging easier, suitable for various environments and die-casting machines of different specifications, offering greater compatibility and lower cost.

[0026] In some embodiments, such as Figure 1As shown, the first connecting rod 2 has a first rotating shaft 21 and a second rotating shaft 22 protruding from its side. The other end of the second connecting rod 3 is fitted and fixed to the circumference of the first rotating shaft 21. One end of the third connecting rod 4 is fitted and fixed to the circumference of the second rotating shaft 22. The second connecting rod 3 has a third rotating shaft 31 and a fourth rotating shaft 32 protruding from its side. The third rotating shaft 31 is located between the fourth rotating shaft 32 and the first rotating shaft 21. One end of the fourth connecting rod 5 is fitted and hinged to the circumference of the third rotating shaft 31, and the other end of the fifth connecting rod 6 is fitted and hinged to the circumference of the fourth rotating shaft 32. The other end of the third connecting rod 4 has a fifth rotating shaft 41 protruding from its side, and the other end of the fifth connecting rod 6 is fitted and hinged to the circumference of the fifth rotating shaft 41. This design avoids interaction between the operating links and makes installation and disassembly more convenient.

[0027] In some embodiments, please refer to Figure 1 , Figure 2 The second link 3 and the third link 4 are connected to the first link 2 on the same side and are coplanar. The first link 2, the fourth link 5, and the fifth link 6 are all located on the same side of the second link 3, and are staggered, which effectively saves space. When swinging, the second link 3 and the third link 4 can avoid interfering with the operation of the first link 2, and the operating space can be further reduced.

[0028] Preferably, the distance between the third rotating shaft 31 and the fourth rotating shaft 32 is smaller than the distance between the third rotating shaft 31 and the first rotating shaft 21, which reduces the space required for the fourth link 5 to swing and improves compatibility.

[0029] In some embodiments, the distance between the first rotating shaft 21 and the second rotating shaft 22 is smaller than the distance between the first rotating shaft 21 and the ladle 7, which reduces the swing range of the third link 4 and the second link 3, thereby adapting to more complex working spaces and having higher compatibility.

[0030] In some embodiments, the length of the fifth link 6 is less than the distance between the other end of the second link 3 and the end of the third link 4. This extends the length of the force driving the third link 4 through the second link 3 as a fulcrum 52, thereby reducing the driving force that drives the first link 2 to swing, making it easier to use.

[0031] In some embodiments, the other end of the third link 4 protrudes from the fifth link 6, and the other end of the third link 4 is provided with a counterweight 42, which can improve the balance and stability of the movement during the overall swing process and effectively prevent the soup from spilling out of the ladle 7 due to shaking.

[0032] In some embodiments, please refer to Figure 1 The fourth link 5 has a recessed groove 51 on the side facing the fifth link 6. The groove 51 is designed with an arc-shaped concave surface structure, which avoids misalignment, makes the structure more compact, and improves space utilization.

[0033] In this five-bar linkage 1, the first link 2 has the longest length, the second link 3 is longer than the third link 4, and the third link 4 is longer than the fourth link 5 and the fifth link 6. The forward and reverse rotation of the drive motor can be achieved by using the other end of the fourth link 5 as a pivot point 52 to drive the five-bar linkage 1 to swing forward and backward, thus realizing the reciprocating motion of the ladle 7 between the soup-pouring station 8 and the soup-retrieving station 9. The fourth link 5 acts as the driving shaft, and the fifth link 6 acts as the driven shaft. The fourth link 5 drives the fifth link 6 to rotate, and the fifth link 6 drives the third link 4, the second link 3, and the first link 2 to swing. Since the first link 2, the second link 3, and the third link 4 are fixedly connected, the overall relative position remains unchanged during the swinging process. The ladle 7 is hinged to the end of the first link 2. Under the weight of the ladle 7, the opening of the ladle 7 always faces upward, preventing the ladle 7 from flipping and spilling soup during the reciprocating motion, making it more convenient to use. The running trajectory of the first connecting rod 2, the second connecting rod 3, the third connecting rod 4, the fourth connecting rod 5, and the fifth connecting rod 6 can be adjusted based on the actual positions of the soup-pouring station 8 and the soup-retrieving station 9 by setting the positions of the first rotating shaft 21, the second rotating shaft 22, the third rotating shaft 31, the fourth rotating shaft 32, and the fifth rotating shaft 41. Alternatively, the initial height of the soup ladle 7 can be adjusted by adjusting the relative fixed angle between the first connecting rod 2, the second connecting rod 3, and the third connecting rod 4, thereby adjusting the running trajectory of the soup ladle 7.

[0034] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A five-bar linkage device, characterized by The system includes a first link (2), a second link (3), a third link (4), a fourth link (5), and a fifth link (6) of different lengths. One end of the first link (2) is hinged to a ladle (7), and the other end of the first link (2) is fixedly connected to one end of the third link (4). The other end of the third link (4) is hinged to one end of the fifth link (6), and the other end of the fifth link (6) is hinged to one end of the second link (3). The other end of the second link (3) is fixedly connected to the first link (2). The other end of the connecting rod (3) is located between one end of the third connecting rod (4); one end of the fourth connecting rod (5) is hinged to the second connecting rod (3), and the other end of the fourth connecting rod (5) is fixed to the output shaft of the drive motor; the drive motor is used to drive the fourth connecting rod (5) to rotate forward and backward based on the end of the other end of the fourth connecting rod (5) as the axis, so as to drive the first connecting rod (2), the second connecting rod (3), the third connecting rod (4), and the fifth connecting rod (6) to swing, so that the soup ladle (7) reciprocates between the soup pouring station (8) and the soup taking station (9).

2. The five-bar linkage device of claim 1, wherein, The first connecting rod (2) has a first rotating shaft (21) and a second rotating shaft (22) protruding from its side. The other end of the second connecting rod (3) is fitted and fixed to the periphery of the first rotating shaft (21). One end of the third connecting rod (4) is fitted and fixed to the periphery of the second rotating shaft (22). The second connecting rod (3) has a third rotating shaft (31) and a fourth rotating shaft (32) protruding from its side. The third rotating shaft (31) is located between the fourth rotating shaft (32) and the first rotating shaft (21). One end of the fourth connecting rod (5) is fitted and hinged to the periphery of the third rotating shaft (31). The other end of the fifth connecting rod (6) is fitted and hinged to the periphery of the fourth rotating shaft (32). The other end of the third connecting rod (4) has a fifth rotating shaft (41) protruding from its side. The other end of the fifth connecting rod (6) is fitted and hinged to the periphery of the fifth rotating shaft (41).

3. The five-bar linkage device of claim 2, wherein, The second link (3) and the third link (4) are connected to one side of the first link (2) and are arranged on the same plane. The first link (2), the fourth link (5) and the fifth link (6) are all located on the same side of the second link (3).

4. The five-bar linkage of claim 2, wherein, The distance between the third rotating shaft (31) and the fourth rotating shaft (32) is less than the distance between the third rotating shaft (31) and the first rotating shaft (21).

5. The five-bar linkage device of claim 2, wherein, The distance between the first rotating shaft (21) and the second rotating shaft (22) is less than the distance between the first rotating shaft (21) and the spoon (7).

6. The five-bar linkage of claim 1, wherein, The length of the fifth link (6) is less than the distance between the end of the other end of the second link (3) and the end of one end of the third link (4).

7. The five-bar linkage of claim 1, wherein, The other end of the third link (4) protrudes from the fifth link (6), and a counterweight (42) is provided at the other end of the third link (4).

8. The five-bar linkage according to claim 1, characterized in that, The fourth link (5) has a recessed groove (51) on the side facing the fifth link (6), and the groove (51) is configured as an arc-shaped concave surface structure.

Images