A mechanical arm clamp for picking and placing a rod member

Abstract

The utility model relates to the technical field of bar clamps, disclose a kind of mechanical arm clamp for taking and placing bar, including mounting plate, a plurality of sliding grooves are set in one side, two clamping plates for clamping bar are slidably installed in the inner cavity of a plurality of sliding grooves, and a plurality of air cylinders for the movement of clamping plate are fixedly installed on the other side of mounting plate;Clamping piece is arranged at the outside of clamping plate, and clamping piece can deform to different degrees according to the different diameters of bar, and different diameters of bar can be compatible by clamping piece, so as to increase the stability when bar is transferred.The utility model, clamping piece can deform to different degrees according to the different diameters of bar, and clamping piece can be compatible with different diameters of bar, so as to increase the stability when bar is transferred, without replacing clamping plate according to the duration of bar, reduce the time and energy required for bar production, improve the efficiency of bar production.

Description

Technical Field

[0001] This utility model relates to the field of rod clamping technology, and in particular to a robotic arm clamp for picking up and placing rods. Background Technology

[0002] Rods can be classified by material into metal rods, plastic / composite material rods, and brittle rods, and are commonly used in automobile manufacturing, electronic assembly, and construction industries.

[0003] The robotic arm gripper used for picking up and placing rods is a core execution component in an automation system for grasping, handling, positioning, and assembling rods. Its function is not limited to simple clamping, but also directly affects production efficiency, operational accuracy, and safety.

[0004] Currently, after the rods are die-cast, they need to be transferred to a stress-relieving device to eliminate their internal stress and improve their strength during use. After stress relief, they are neatly placed in a transfer rack for centralized storage and transfer. In order to reduce the manpower and material resources consumed in transferring the rods from the die-casting equipment to the stress-relieving equipment, existing technologies generally install a robotic arm between the die-casting equipment and the stress-relieving equipment to transfer the rods. The robotic arm can clamp the outer wall of the rod through the clamp at its end. After the rod is clamped by the clamp, it can be quickly transferred to the stress-relieving equipment by the robotic arm.

[0005] When existing clamps hold rods, the robotic arm first controls the clamp to be directly above the rod until it is positioned between two rows of clamping plates. Then, a cylinder pushes the two rows of clamping plates towards the rod simultaneously until they clamp the outer wall of the rod, thus gripping it. However, due to different uses, the required rod diameter varies (rod diameter is proportional to load-bearing capacity). To prevent the rod from falling out of the clamping plates during transfer, the contact area between the clamping plates and the outer surface of the rod needs to be increased (thus increasing the friction between the outer surface of the rod and the outer wall of the clamping plates, or by having the clamping plates wrap around the contact surface of the rod's outer wall). Currently, to ensure the clamping plates are compatible with rods of different diameters, they need to be manually replaced when the dimensions of the rods produced change, allowing the clamping plates to be compatible with the rods over time. However, replacing the clamping plates requires stopping the robotic arm and die-casting equipment, thus reducing the efficiency of rod production and increasing the time and effort required for production. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a robotic arm gripper for picking up and placing rods, aiming to improve the problems in the prior art.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a robotic arm gripper for picking up and placing rods, comprising:

[0008] The mounting plate has multiple sliding grooves on one side, and two clamping plates for holding the rods are slidably installed in the inner cavity of each sliding groove. Multiple cylinders for moving the clamping plates are fixedly installed on the other side of the mounting plate.

[0009] The clamping component is located on the outside of the clamping plate. The clamping component can deform to different degrees according to the diameter of the rod. The clamping component can accommodate rods of different diameters, thereby increasing the stability of the rod during transfer.

[0010] As a further description of the above technical solution:

[0011] The clamping component includes an elastic plate and a slider. Two guide grooves are provided on one side of the clamping plate. A slider is slidably installed in the inner cavity of the guide groove. An elastic plate is provided between two adjacent sliders. The two ends of the elastic plate are fixedly connected to the ends of the two adjacent sliders that extend outside the sliding groove.

[0012] As a further description of the above technical solution:

[0013] A top pressure spring is fixedly installed in the inner cavity of the guide groove, and one end of the top pressure spring is fixedly connected to one end of the slider.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the clamp is curved, and the curved part of the clamp is located between two sliding grooves.

[0016] As a further description of the above technical solution:

[0017] A return spring is fixedly installed on the side of the elastic plate near the clamping plate, and the other end of the return spring is fixedly connected to the bent part of the clamping plate.

[0018] As a further description of the above technical solution:

[0019] Two sliding blocks are slidably installed in the inner cavity of multiple sliding grooves. The end of the sliding block extending outside the sliding groove is fixedly connected to one end of the clamping plate. A brake rod is fixedly installed on one side of each of the multiple sliding blocks. The power output end of multiple cylinders is fixedly connected to the end of the multiple brake rods extending outside the sliding groove.

[0020] This utility model has the following beneficial effects:

[0021] In this invention, the clamping component can deform to different degrees depending on the diameter of the rod, and it is compatible with rods of different diameters, thereby increasing the stability of the rod during transfer. There is no need to replace the clamping plate continuously according to the rod, which reduces the time and effort required for rod production and improves the efficiency of rod production. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is an assembly drawing of the cylinder and mounting plate of this utility model;

[0024] Figure 3 This is an assembly drawing of the clamping plate and slider of this utility model;

[0025] Figure 4 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0026] Figure 5 This utility model Figure 3 Enlarged view of the structure at point B.

[0027] Legend:

[0028] 1. Mounting plate; 2. Brake lever; 3. Slider; 4. Clamping plate; 5. Elastic plate; 6. Return spring; 7. Top pressure spring. Detailed Implementation

[0029] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1-5 One embodiment of this utility model provides: a robotic arm gripper for picking up and placing rods, comprising:

[0031] Mounting plate 1 has multiple sliding grooves on one side. Two clamping plates 4 for holding the rod are slidably installed in the inner cavity of each sliding groove. The side of mounting plate 1 away from the sliding groove is detachably connected to the end of the robotic arm. Under the action of the robotic arm, the position of mounting plate 1 can be changed at will, so that the clamping plates 4 can be moved to the top of the rod, which is beneficial for holding the rod through the clamping plates 4.

[0032] Two sliding blocks are slidably installed in the inner cavity of multiple sliding grooves. One end of the sliding block extends to the outside of the sliding groove and is fixedly connected to one end of the clamping plate 4. The sliding groove can limit the sliding trajectory of the sliding block, thereby changing the sliding trajectory of the clamping plate 4 in the inner cavity of the same sliding groove, which is beneficial to changing the distance between two adjacent clamping plates 4.

[0033] Both the sliding groove and the sliding block are designed with a T-shaped structure. The sliding groove can limit the sliding trajectory of the sliding block, preventing the sliding block from falling out of the sliding groove and improving the sliding stability of the clamping plate 4.

[0034] Brake levers 2 are fixedly installed on one side of multiple sliding blocks. The power output ends of multiple cylinders are fixedly connected to the ends of multiple brake levers 2 extending to the outside of the sliding groove. The number of cylinders installed on one side of the mounting plate 1 is the same as the number of brake levers 2, and there is a one-to-one correspondence between multiple brake levers 2 and multiple cylinders. The ends of brake levers 2 extending to the outside of the sliding groove are fixedly connected to the power output ends of the cylinders. When multiple cylinders are activated at the same time, the two clamping plates 4 located in the inner cavity of the sliding groove can be brought closer to each other or moved away from each other. When two adjacent clamping plates 4 are brought closer to each other, the outer surface of the rod can be clamped. Otherwise, the clamping of the outer surface of the rod is released (this is the prior art and will not be described in detail here).

[0035] Two guide grooves are provided on one side of the clamping plate 4. A slider 3 is slidably installed in the inner cavity of the guide groove. An elastic plate 5 is provided between two adjacent sliders 3. The two ends of the elastic plate 5 are fixedly connected to the ends of the two adjacent sliders 3 that extend to the outside of the sliding groove. When the two rows of clamping plates 4 are located between the rods, multiple cylinders are activated at the same time to move multiple brake levers 2 simultaneously. At this time, the two adjacent clamping plates 4 move towards the rods at the same time until the outer wall of the elastic plate 5 and the outer wall of the rods are in contact. As the power output ends of the multiple cylinders continue to move, the elastic plate 5 compresses the outer wall of the rods. After being compressed, the elastic plate 5 continues to deform (the outer wall of the elastic plate 5 continues to bend towards the clamping plate 4). At this time, the contact area between the outer wall of the elastic plate 5 and the outer surface of the rods increases. At the same time, the elastic plate 5 wraps the outer surface of the rods, which improves the stability of the rods during transfer and prevents the rods from falling between the two clamping plates 4.

[0036] The movement distance of the cylinder's power output end is adjusted according to the diameter of the rod, thereby adjusting the distance between the two elastic plates 5. When the rod diameter is large, the straight-line distance between the outer wall of the rod and the elastic plate 5 is small, so the movement distance of the two clamping plates 4 when they approach each other needs to be reduced. This ensures that the elastic plate 5 wraps around the outer surface of the rod while preventing the stress on the elastic plate 5 from exceeding its yield strength, which could lead to irreversible slippage of the crystal structure of the elastic plate 5. When the rod diameter is small, the straight-line distance between the outer wall of the rod and the elastic plate 5 is large, so the movement distance of the two clamping plates 4 when they approach each other needs to be increased until the elastic plate 5 completely wraps around the outer surface of the rod, thus protecting the elastic plate 5, extending its service life, and enabling the elastic plate 5 to continuously clamp rods of different sizes without the need to replace the clamping plates 4 continuously. This reduces the time and effort required for rod production and improves the efficiency of rod production.

[0037] The elastic plate 5 and the slider 3 constitute a clamping device for holding rods of different sizes. The clamping device can deform to different degrees according to the diameter of the rod. At the same time, the clamping device can be compatible with rods of different diameters, thereby increasing the stability of the rod during transfer.

[0038] The elastic plate 5 is made of alloy spring steel, which has high yield strength and excellent elastic recovery rate, which can increase the number of rebounds of the elastic plate 5 and extend the service life of the elastic plate 5.

[0039] A top-pressure spring 7 is fixedly installed in the inner cavity of the guide groove. One end of the top-pressure spring 7 is fixedly connected to one end of the slider 3. When the elastic plate 5 clamps the rod and deforms, the two sliders 3 connected to both ends of the elastic plate 5 are pulled closer to each other by the tension at both ends of the elastic plate 5 until the clamping plate 4 stops moving. When two adjacent sliders 3 are close to each other, the end of the top-pressure spring 7 connected to the slider 3 is continuously stretched. When the top-pressure spring 7 is in the stretched state, it applies a pulling force to the slider 3 to move away from the rod, thereby applying a restoring pulling force to both ends of the elastic plate 5, increasing the pressure applied by the outer wall of the elastic plate 5 to the outer surface of the rod, and further increasing the friction between the outer wall of the elastic plate 5 and the outer surface of the rod, making the rod more stable between two adjacent elastic plates 5.

[0040] When the elastic plate 5 disengages from the rod, the elastic plate 5 quickly returns to its original position. At the same time, the top spring 7 converts the elastic potential energy into the kinetic energy for the slider 3 to return to its original position, allowing the slider 3 to return to its original position quickly and continuously stretching both ends of the elastic plate 5, further preventing the outer surface of the elastic plate 5 from failing to recover due to frequent bending.

[0041] The outer wall of the clamping plate 4 is bent, and the bent part of the clamping plate 4 is located between two sliding grooves. When the elastic plate 5 clamps the rod and bends, the bent part on one side of the clamping plate 4 can provide a bendable space for the elastic plate 5, so as to prevent the elastic plate 5 from contacting the outer wall of the clamping plate 4 and becoming unable to bend when the degree of bending is too large, allowing the elastic plate 5 to bend to different degrees.

[0042] A return spring 6 is fixedly installed on the side of the elastic plate 5 near the clamping plate 4. The other end of the return spring 6 is fixedly connected to the bent part of the clamping plate 4. When the elastic plate 5 clamps the rod and deforms, the return spring 6 is compressed. The compressed return spring 6 continues to apply pressure to the outer wall of the elastic plate 5 and to the bent surface of the elastic plate 5, further increasing the pressure exerted by the outer wall of the elastic plate 5 on the outer surface of the rod, and further increasing the squeezing force of the elastic plate 5 on the outer wall of the rod.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A robotic arm gripper for picking up and placing rods, characterized in that: include The mounting plate (1) has multiple sliding grooves on one side, and two clamping plates (4) for clamping the rods are slidably installed in the inner cavity of each sliding groove. Multiple cylinders for moving the clamping plates (4) are fixedly installed on the other side of the mounting plate (1). The clamping component is set outside the clamping plate (4). The clamping component can deform to different degrees according to the different diameters of the rod. The clamping component can accommodate rods of different diameters, thereby increasing the stability of the rod during transfer.

2. The robotic arm gripper for picking up and placing rods according to claim 1, characterized in that: The clamping member includes an elastic plate (5) and a slider (3). Two guide grooves are provided on one side of the clamping plate (4). A slider (3) is slidably installed in the inner cavity of the guide groove. An elastic plate (5) is provided between two adjacent sliders (3). The two ends of the elastic plate (5) are respectively fixedly connected to one end of the two adjacent sliders (3) extending to the outside of the sliding groove.

3. A robotic arm gripper for picking up and placing rods according to claim 2, characterized in that: A top pressure spring (7) is fixedly installed in the inner cavity of the guide groove, and one end of the top pressure spring (7) is fixedly connected to one end of the slider (3).

4. A robotic arm gripper for picking up and placing rods according to claim 1, characterized in that: The outer wall of the clamp (4) is bent, and the bent part of the clamp (4) is located between two sliding grooves.

5. A robotic arm gripper for picking up and placing rods according to claim 2, characterized in that: A reset spring (6) is fixedly installed on the side of the elastic plate (5) near the clamping plate (4), and the other end of the reset spring (6) is fixedly connected to the bent part of the clamping plate (4).

6. A robotic arm gripper for picking up and placing rods according to claim 1, characterized in that: Two sliding blocks are slidably installed in the inner cavity of multiple sliding grooves. The end of the sliding block extending to the outside of the sliding groove is fixedly connected to one end of the clamp (4). A brake rod (2) is fixedly installed on one side of each of the multiple sliding blocks. The power output end of multiple cylinders is fixedly connected to the end of the brake rod (2) extending to the outside of the sliding groove.

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