An aluminum rod feeding mechanism

Abstract

This utility model discloses an aluminum rod feeding mechanism, including a hydraulic pump, a hydraulic synchronization valve, and two feeding units. Each feeding unit includes a hydraulic cylinder, a transfer plate, a balance linkage mechanism, a first base, and a second base. The hydraulic pump is connected to the hydraulic synchronization valve, and the hydraulic synchronization valve is connected to the hydraulic cylinder. This utility model arranges two feeding units on both sides of an aluminum rod storage rack. The hydraulic pump, through the hydraulic synchronization valve, synchronously drives the hydraulic cylinder, which in turn drives the balance linkage mechanism to transfer the aluminum rod from the storage rack to the feeding rack. The dual-sided layout design applies symmetrical balancing forces to the aluminum rod during the transfer process, improving the stability of the feeding. The feeding unit of this utility model is reasonably designed and has a simple structure. The transmission efficiency of the hydraulic cylinder driving the balance linkage mechanism is high and stable, offering advantages such as convenient maintenance and low manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of aluminum profile processing technology, and more specifically, to an aluminum rod feeding mechanism. Background Technology

[0002] Aluminum bars are an important raw material in the production of aluminum profiles. They are aluminum alloy bars produced through specific processes, and can be further processed into aluminum profiles of various specifications through extrusion and other processes. During the production of aluminum profiles, it is often necessary to transfer aluminum bars from storage racks to feeding racks. Currently, the transfer of aluminum bars is mainly achieved using lifting and transferring racks. Lifting and transferring racks are automated or semi-automatic equipment used for material handling, lifting, and transfer. Their structure is relatively complex, their transmission efficiency is low, and their cost is high. Utility Model Content

[0003] This utility model provides an aluminum rod feeding mechanism to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: an aluminum rod feeding mechanism, comprising a hydraulic pump, a hydraulic synchronization valve, and two parallel feeding units; each feeding unit includes a hydraulic cylinder, a transfer plate, a balance linkage mechanism, a first base, and a second base; the cylinder body of the hydraulic cylinder is rotatably connected to the first base, and its piston rod is rotatably connected to the balance linkage mechanism; the bottom of the balance linkage mechanism is rotatably connected to the second base, and the transfer plate is rotatably connected to the top of the balance linkage mechanism; the hydraulic pump is connected to the hydraulic synchronization valve, and the hydraulic synchronization valve is connected to the hydraulic cylinder.

[0004] Preferably, the balance linkage mechanism includes a first link and a second link, wherein the length direction of the first link is parallel to the length direction of the second link; the piston rod of the hydraulic cylinder is rotatably connected to the first link; the top of the first link is rotatably connected to the transfer plate and the bottom is rotatably connected to the second base; the top of the second link is rotatably connected to the transfer plate and the bottom is rotatably connected to the second base.

[0005] Preferably, the first connecting rod includes two first side plates, which are parallel to each other and arranged opposite to each other. The first side plates are rotatably connected to the transfer plate and the second base, respectively. A rotating seat is provided on the side of the first side plate, and the rotating seats of the two first side plates are connected by a rotating shaft. The piston rod of the hydraulic cylinder is rotatably connected to the rotating shaft.

[0006] Preferably, the second connecting rod includes two second side plates, which are parallel to each other and arranged opposite to each other. The second side plates are rotatably connected to the transfer plate and the second base, respectively.

[0007] Preferably, the top of the transfer plate is provided with a receiving groove, the cross-section of the receiving groove is an arc-shaped structure, the receiving groove includes a feeding side and a discharging side, the feeding side is close to the direction of the aluminum rod coming in, and the discharging side is away from the direction of the aluminum rod coming in; the height of the feeding side is less than the height of the discharging side.

[0008] Preferably, the outer side of the feed side is provided with a guide slope to facilitate the entry of aluminum rods.

[0009] Preferably, it also includes an angle sensor, which is used to measure the rotation angle of the first link or the second link.

[0010] Preferably, the angle sensor is a Hall effect angle sensor or a photoelectric angle sensor.

[0011] Preferably, a first limiting block is provided on one side of the second base, and a second limiting block is provided on the other side; the first limiting block is configured to cooperate with the first connecting rod and is used to limit the rotation angle of the first connecting rod; the second limiting block is configured to cooperate with the second connecting rod and is used to limit the rotation angle of the second connecting rod.

[0012] Preferably, a reinforcing rib is provided between the first connecting rod and the second connecting rod, and the two ends of the reinforcing rib are rotatably connected to the first connecting rod and the second connecting rod, respectively.

[0013] Compared with existing technologies, the advantages of this invention are as follows: The aluminum rod feeding mechanism of this invention, by setting two sets of feeding units on both sides of the aluminum rod storage rack, uses a hydraulic pump to synchronously drive a hydraulic cylinder after being diverted by a hydraulic synchronization valve, thereby driving a balance linkage mechanism to transfer the aluminum rod from the storage rack to the feeding rack. The double-sided layout design can apply symmetrical balancing forces to the aluminum rod during the transfer process, improving the stability of the feeding. The feeding unit of this invention is reasonably designed and has a simple structure. The transmission efficiency of the hydraulic cylinder driving the balance linkage mechanism is high and stable and reliable, and it has the advantages of convenient maintenance and low manufacturing cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the installation effect of the aluminum rod feeding mechanism according to an embodiment of the present utility model;

[0015] Figure 2 This is a cross-sectional view showing the installation effect of the aluminum rod feeding mechanism according to an embodiment of the present utility model.

[0016] Figure 3 This is a structural diagram of the aluminum rod feeding mechanism in the feeding state according to an embodiment of the present utility model;

[0017] Figure 4 This is a structural diagram of the aluminum rod feeding mechanism in the receiving state according to an embodiment of the present utility model;

[0018] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0019] exist Figures 1 to 5 In the diagram, the correspondence between the component names and the drawing numbers is as follows:

[0020] 1--Bar feeding unit, 11--Hydraulic cylinder, 12--Transfer plate, 121--Receiving trough, 1211--Feeding side, 1212--Discharge side, 1213--Guide slope, 13--Balance linkage mechanism, 131--First connecting rod, 1311--First side plate, 1312--Rotating seat, 132--Second connecting rod, 1321--Second side plate, 14--First base, 15--Second base, 2--Storage rack, 3--Feeding rack, 4--Aluminum bar. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please refer to Figures 1 to 5This utility model provides an aluminum rod feeding mechanism, including a hydraulic pump, a hydraulic synchronization valve, and two parallel feeding units 1; each feeding unit 1 includes a hydraulic cylinder 11, a transfer plate 12, a balance linkage mechanism 13, a first base 14, and a second base 15; the cylinder body of the hydraulic cylinder 11 is rotatably connected to the first base 14, and its piston rod is rotatably connected to the balance linkage mechanism 13; the bottom of the balance linkage mechanism 13 is rotatably connected to the second base 15, and the transfer plate 12 is rotatably connected to the top of the balance linkage mechanism 13; the hydraulic pump is connected to the hydraulic synchronization valve, and the hydraulic synchronization valve is connected to the hydraulic cylinder 11.

[0025] In this embodiment of the invention, the storage rack 2 is used to store aluminum rods. The storage rack 2 is equipped with a transmission belt device to move the aluminum rods 4 towards the feeding rack 3. The feeding rack 3 is also used to transport the aluminum rods 4 along their length. The feeding rack 3 is equipped with a feeding groove that cooperates with the feeding unit 1. The feeding groove allows the transfer plate 12 and the balance linkage mechanism 13 to pass through, so that when the transfer plate 12 enters the feeding groove downwards, the aluminum rods 4 can stay on the feeding rack 3. The aluminum rod 4 feeding mechanism is used for transferring the aluminum rods 4 between the storage rack 2 and the feeding rack 3. The aluminum rod 4 feeding mechanism consists of two sets of feeding units 1, which are respectively set on both sides of the storage rack 2. They can simultaneously apply force to different positions of the aluminum rods 4, avoiding the tilting and displacement of the aluminum rods 4 caused by single-end pushing. Especially for long aluminum rods 4, it can effectively prevent bending or jamming caused by the center of gravity shift. To ensure that the actions of the two bar-feeding units 1 are synchronized, the hydraulic pump in this embodiment is connected to the two hydraulic cylinders 11 through a synchronization valve. This ensures that the flow rate and pressure of the two cylinders are consistent, thus keeping the actions of the two bar-feeding units 1 synchronized. Compared with mechanical linkage or individual control, this significantly reduces uneven force on the aluminum rod 4 caused by differences in the actions on both sides, improving feeding accuracy. In this embodiment, a balance linkage mechanism 13 is used to improve load-bearing capacity and motion stability. As a transmission component between the hydraulic cylinder 11 and the transfer plate 12, the balance linkage mechanism 13 can distribute the thrust or pull force of the hydraulic cylinder 11 to the transfer plate 12 through multiple links, avoiding deformation of the transfer plate 12 due to excessive force at a single point. At the same time, the rigid support of the balance linkage mechanism 13 can buffer the gravitational impact when the aluminum rod 4 is placed, reducing wear on the hydraulic cylinder 11. The balance linkage mechanism 13 has multiple hinge points for rotation, thereby achieving the lifting or translation of the transfer plate 12. Its movement trajectory is stable and controllable under the control of the hydraulic cylinder 11 and the rod length, ensuring that the transfer plate 12 remains stationary during the pushing process and preventing the aluminum rod 4 from slipping during transfer. Compared to directly driving the transfer plate 12 by the hydraulic cylinder 11, which is prone to tilting of the aluminum rod 4 due to cylinder wobbling, the transmission method in this embodiment has higher stability. The hydraulic cylinder 11 has a large output force and can adapt to aluminum rods 4 of different diameters and weights. Only the hydraulic pump pressure needs to be adjusted to match the load, and the hydraulic transmission has a buffering characteristic, which can adaptively adjust the pressure when the aluminum rod 4 is not placed in an irregular manner, avoiding rigid impact damage to the equipment or the aluminum rod 4. The rotating connection structure in the balance linkage mechanism 13 can compensate for minor coaxiality errors during installation, while allowing slight angular offsets of each component during movement, reducing wear caused by mechanical hard friction and extending the equipment life.

[0026] Furthermore, in this embodiment, the hydraulic cylinder 11, the balance linkage mechanism 13, and the base structure in the bar feeding unit 1 are all independent modules. The two units have the same structure, which facilitates mass production, installation, and replacement of parts. If it is necessary to adjust the feeding length or load-bearing capacity, it can be achieved by increasing or decreasing the number of units (such as expanding to multiple units in parallel) or by replacing hydraulic cylinders 11 and linkages of different specifications, which is highly flexible.

[0027] The working process of this embodiment can be divided into three stages: startup preparation, synchronous transfer, and reset standby, as detailed below:

[0028] Start-up preparation phase: The hydraulic pump is in standby mode, the piston rod of hydraulic cylinder 11 retracts, and the balance linkage mechanism 13 drives the material transfer plate 12 to the initial low position or the ready-to-feed position, ensuring stable load-bearing of the aluminum rod 4. Please refer to... Figure 4 The storage rack 2 conveys the aluminum rods 4 to the transfer plate 12 placed on the two parallel rod feeding units 1.

[0029] Synchronous transfer stage: The hydraulic pump starts, and the output pressure oil is diverted through the hydraulic synchronization valve, entering the hydraulic cylinders 11 of the two bar-feeding units 1 in equal quantity and pressure, ensuring strict synchronization of the two cylinders' movements. The piston rod of the hydraulic cylinder 11 extends, pushing the balance linkage mechanism 13 to move: the balance linkage mechanism 13 rotates around the hinge point with the second base 15 as the fulcrum, and the top drives the transfer plate 12 to move smoothly along the preset trajectory. Please refer to... Figure 3 As the piston rod continues to extend, the balance linkage mechanism 13 drives the transfer plate 12 to move the aluminum rod 4 to the feeding rack 3. Throughout the process, the synchronous action of the two units ensures that the aluminum rod 4 is subjected to balanced force and is not tilted.

[0030] Reset and standby stage: After the transfer is completed, the hydraulic pump supplies oil in reverse, the piston rod of the hydraulic cylinder 11 retracts, and the transfer plate 12 moves in reverse through the balance linkage mechanism 13, returning to the initial low position, waiting for the next aluminum rod 4 to be placed, and entering the next working cycle.

[0031] Preferably, the balance linkage mechanism 13 includes a first link 131 and a second link 132, the length direction of the first link 131 being parallel to the length direction of the second link 132; the piston rod of the hydraulic cylinder 11 is rotatably connected to the first link 131; the top of the first link 131 is rotatably connected to the transfer plate 12, and the bottom is rotatably connected to the second base 15; the top of the second link 132 is rotatably connected to the transfer plate 12, and the bottom is rotatably connected to the second base 15.

[0032] In this embodiment, the balance linkage mechanism 13 consists of a first link 131 and a second link 132 that are parallel in length. The first link 131 and the second link 132 are parallel in length and symmetrically arranged, forming the core structure of a parallelogram linkage mechanism. When the piston rod pushes the first link 131, the two links rotate synchronously about the hinge point with the second base 15 as the axis, and always remain parallel. This feature can strictly ensure that the transfer plate 12 remains horizontal during lifting or conveying, avoiding tilting of the transfer plate 12 due to the force offset of a single link, and preventing the aluminum rod 4 from slipping. The fixed length and synchronous movement of the parallel links make the movement trajectory of the transfer plate 12 (such as the rising height and translation distance) completely determined by the link length and the hinge point position, unaffected by slight changes in load (such as small differences in the diameter of the aluminum rod 4), ensuring the consistency of the endpoint position of each conveying and improving the feeding accuracy. The weight of the aluminum rod 4 is transferred to the first connecting rod 131 and the second connecting rod 132 via the transfer plate 12, and then to the frame through their respective hinge points with the second base 15. This avoids excessive stress on a single point, preventing connecting rod bending or hinge point wear, and increases the load-bearing capacity of the mechanism, making it particularly suitable for large-diameter, heavy aluminum rods 4. Compared to a single-link structure, the parallel arrangement of the double connecting rods reduces local stress concentration at the connection points between the transfer plate 12 and the connecting rods. For example, when the center of gravity of the aluminum rod 4 shifts slightly, the two connecting rods can automatically compensate through the force difference, preventing damage to a certain connection hinge point due to overload and extending the service life of the equipment. The first connecting rod 131 and the second connecting rod 132 have the same structure and length, enabling standardized production and reducing processing and assembly costs. At the same time, the symmetrical layout simplifies the force analysis of the mechanism and facilitates later debugging and maintenance.

[0033] Preferably, the first connecting rod 131 includes two first side plates 1311, which are parallel to each other and arranged opposite to each other. The first side plates 1311 are rotatably connected to the transfer plate 12 and the second base 15, respectively. A rotating seat 1312 is provided on the side of the first side plate 1311, and the rotating seats 1312 of the two first side plates 1311 are connected by a rotating shaft. The piston rod of the hydraulic cylinder 11 is rotatably connected to the rotating shaft. In this embodiment, the two parallel and opposite first side plates 1311 form a clamp-type structure, which has a larger moment of inertia than a single plate-shaped connecting rod, and significantly improves its resistance to bending and torsion. When bearing the weight of the aluminum rod 4 or subjected to the thrust of the hydraulic cylinder 11, it can effectively prevent the connecting rod from deforming due to excessive force, ensuring transmission accuracy. The connection points of the two first side plates 1311 with the transfer plate 12 and the second base 15 are all double hinge points (the two side plates are hinged respectively). This can distribute the weight of the aluminum rod 4 and the thrust of the hydraulic cylinder 11 to the two side plates, avoiding wear or breakage caused by stress concentration due to single-point connection, and extending the service life of hinge points (such as bearings and pins).

[0034] Preferably, the second connecting rod 132 includes two second side plates 1321, which are parallel to each other and arranged opposite to each other. The second side plates 1321 are rotatably connected to the transfer plate 12 and the second base 15, respectively.

[0035] Preferably, the top of the transfer plate 12 is provided with a receiving groove 121. The receiving groove 121 has an arc-shaped cross-section and includes an infeed side 1211 and an outlet side 1212. The infeed side 1211 is close to the incoming direction of the aluminum rod 4, and the outlet side 1212 is away from the incoming direction of the aluminum rod 4. The height of the infeed side 1211 is less than the height of the outlet side 1212. In this embodiment, the receiving groove 121 has an arc-shaped cross-section, and the aluminum rod 4 has a cylindrical structure. The curved surface of the arc-shaped receiving groove 121 can naturally fit with the outer circle of the aluminum rod 4, forming a ring-shaped support structure. Compared with a flat or V-shaped groove, the arc-shaped groove has a larger contact area with the aluminum rod 4, which can effectively limit the radial displacement of the aluminum rod 4 during the transfer process and prevent the aluminum rod 4 from slipping due to mechanical vibration or speed changes. Furthermore, the arc-shaped contact surface can evenly distribute the weight of the aluminum rod 4 on the surface of the tank, avoiding stress concentration caused by local point contact and reducing the risk of the aluminum rod 4 being crushed or the receiving tank 121 being worn. This is especially suitable for aluminum rod 4 processing scenarios with high surface quality requirements. In this embodiment, the receiving tank 121 adopts a structure with a low inlet side 1211 and a high outlet side 1212, which can effectively optimize the transfer guidance and prevent backflow. The lower height of the inlet side 1211 reduces the collision and impact between the aluminum rod 4 and the tank when the aluminum rod 4 is fed from the storage rack 2 and enters the receiving tank 121. At the same time, the height difference naturally guides the aluminum rod 4 to slide into the tank, reducing the feeding resistance. The higher height of the outlet side 1212 compared to the inlet side 1211 makes the receiving tank 121 slightly inclined. When the aluminum rod 4 is pushed forward by the transfer plate 12, this height difference can form a slope resistance, preventing the aluminum rod 4 from sliding backward due to inertia or the reverse clearance of the mechanism. Especially when the feeding mechanism starts, stops or changes direction, it can enhance the positional stability of the aluminum rod 4.

[0036] Preferably, the outer surface of the feed side 1211 is provided with a guide slope 1213 to facilitate the entry of the aluminum rod 4. When the aluminum rod 4 arrives, it may be slightly misaligned with the feed side 1211 of the receiving trough due to conveying accuracy errors, inertial offset, or other reasons. The guide slope 1213 can gradually guide the aluminum rod 4 into the arc-shaped area of ​​the receiving trough 121 through the slope, avoiding the aluminum rod 4 from getting stuck at the edge of the feed side 1211 or directly impacting the trough, thus reducing the frequency of manual adjustment or machine shutdown.

[0037] Preferably, an angle sensor is also included, which is used to measure the rotation angle of the first link 131 or the second link 132. In this embodiment, since there is a strict geometric correspondence between the rotation angle of the first link 131 and the second link 132 and the lifting height and conveying distance of the transfer plate 12, by setting the angle sensor to collect the rotation angle of one of the links in real time, the current position (such as height and horizontal displacement) of the transfer plate 12 can be accurately calculated, replacing the traditional limit switch or limit block, and achieving precise positioning. When the aluminum rod 4 is transferred to the feeding rack 3, the angle sensor can provide high-precision position feedback to ensure that the endpoint position of each feeding is consistent, avoiding position deviations caused by mechanical wear, hydraulic oil leakage, etc., which is especially suitable for precision machining scenarios with strict requirements on the feeding position of the aluminum rod 4. Furthermore, an alarm device can be set and connected to the angle sensor. Once a deviation is detected between the angle and the setting, an alarm can be issued through the alarm device to remind the staff to check the equipment in time.

[0038] Preferably, the angle sensor is a Hall effect angle sensor or a photoelectric angle sensor.

[0039] Preferably, a first limiting block is provided on one side of the second base 15, and a second limiting block is provided on the other side; the first limiting block is configured to cooperate with the first connecting rod 131 and is used to limit the rotation angle of the first connecting rod 131; the second limiting block is configured to cooperate with the second connecting rod 132 and is used to limit the rotation angle of the second connecting rod 132. In this embodiment, the first limiting block and the second limiting block directly limit the maximum rotation angle of the first connecting rod 131 and the second connecting rod 132 through mechanical contact, ensuring that the lifting or conveying range of the transfer plate 12 is strictly controlled within a preset safety range. For example, when the connecting rod is out of control due to hydraulic system failure, such as oil pump failure, synchronization valve failure, or oil leakage in the cylinder, the limiting block can forcibly prevent the connecting rod from continuing to rotate, avoiding excessive lifting or lowering of the transfer plate 12, which could cause it to collide with the equipment or the aluminum rod 4 to fall beyond the target station.

[0040] Preferably, a reinforcing rib is provided between the first connecting rod 131 and the second connecting rod 132, and the two ends of the reinforcing rib are rotatably connected to the first connecting rod 131 and the second connecting rod 132, respectively. During the feeding process of the aluminum rod 4, the first connecting rod 131 and the second connecting rod 132 need to bear the weight of the aluminum rod 4 and the inertial force during movement, which can easily lead to bending of the connecting rod or deformation of the hinge point due to excessive load. The reinforcing rib rigidly connects the two connecting rods into a whole, so that the force is distributed from a single connecting rod to the structure composed of the rib and the two connecting rods, which helps to improve the bending and torsional resistance of the balanced linkage mechanism 13, and can adapt to the transfer requirements of larger diameter or longer aluminum rods 4.

[0041] Compared with existing technologies, the advantages of this invention are as follows: The aluminum rod feeding mechanism of this invention, by setting two sets of feeding units on both sides of the aluminum rod storage rack, uses a hydraulic pump to synchronously drive a hydraulic cylinder after being diverted by a hydraulic synchronization valve, thereby driving a balance linkage mechanism to transfer the aluminum rod from the storage rack to the feeding rack. The double-sided layout design can apply symmetrical balancing forces to the aluminum rod during the transfer process, improving the stability of the feeding. The feeding unit of this invention is reasonably designed and has a simple structure. The transmission efficiency of the hydraulic cylinder driving the balance linkage mechanism is high and stable and reliable, and it has the advantages of convenient maintenance and low manufacturing cost.

[0042] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An aluminum rod feeding mechanism, characterized in that, It includes a hydraulic pump, a hydraulic synchronizing valve, and two parallel bar feeding units (1); each bar feeding unit includes a hydraulic cylinder (11), a transfer plate (12), a balance linkage mechanism (13), a first base (14), and a second base (15); the cylinder body of the hydraulic cylinder is rotatably connected to the first base, and its piston rod is rotatably connected to the balance linkage mechanism; the bottom of the balance linkage mechanism is rotatably connected to the second base, and the transfer plate is rotatably connected to the top of the balance linkage mechanism; the hydraulic pump is connected to the hydraulic synchronizing valve, and the hydraulic synchronizing valve is connected to the hydraulic cylinder.

2. The aluminum rod feeding mechanism according to claim 1, characterized in that, The balance linkage mechanism includes a first link (131) and a second link (132), the length direction of the first link is parallel to the length direction of the second link; the piston rod of the hydraulic cylinder is rotatably connected to the first link; the top of the first link is rotatably connected to the transfer plate and the bottom is rotatably connected to the second base; the top of the second link is rotatably connected to the transfer plate and the bottom is rotatably connected to the second base.

3. The aluminum rod feeding mechanism according to claim 2, characterized in that, The first connecting rod includes two first side plates (1311), which are parallel to each other and arranged opposite each other. The first side plates are rotatably connected to the transfer plate and the second base, respectively. A rotating seat (1312) is provided on the side of the first side plate, and the rotating seats of the two first side plates are connected by a rotating shaft. The piston rod of the hydraulic cylinder is rotatably connected to the rotating shaft.

4. The aluminum rod feeding mechanism according to claim 2, characterized in that, The second connecting rod includes two second side plates (1321), which are parallel to each other and arranged opposite each other. The second side plates are rotatably connected to the transfer plate and the second base, respectively.

5. The aluminum rod feeding mechanism according to claim 1, characterized in that, The top of the transfer plate is provided with a receiving groove (121), the cross-section of the receiving groove is an arc structure, the receiving groove includes a feeding side (1211) and a discharging side (1212), the feeding side is close to the direction of aluminum rod feeding, and the discharging side is far away from the direction of aluminum rod feeding; the height of the feeding side is less than the height of the discharging side.

6. The aluminum rod feeding mechanism according to claim 5, characterized in that, The outer side of the feed side is provided with a guide slope (1213) to facilitate the entry of aluminum rods.

7. The aluminum rod feeding mechanism according to claim 2, characterized in that, It also includes an angle sensor, which is used to measure the rotation angle of the first link or the second link.

8. The aluminum rod feeding mechanism according to claim 7, characterized in that, The angle sensor is a Hall effect angle sensor or a photoelectric angle sensor.

9. The aluminum rod feeding mechanism according to claim 2, characterized in that, The second base has a first limiting block on one side and a second limiting block on the other side; the first limiting block is configured to cooperate with the first connecting rod and is used to limit the rotation angle of the first connecting rod; the second limiting block is configured to cooperate with the second connecting rod and is used to limit the rotation angle of the second connecting rod.

10. The aluminum rod feeding mechanism according to claim 2, characterized in that, A reinforcing rib is provided between the first connecting rod and the second connecting rod, and the two ends of the reinforcing rib are rotatably connected to the first connecting rod and the second connecting rod, respectively.

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