Pneumatic cap dismounting mechanism

Abstract

The utility model discloses a pneumatic cap dismounting mechanism which comprises an installation plate main plate, an air cylinder is installed on one side of the installation plate main plate, a lower cover is installed on the other side of the installation plate main plate, the end of a piston rod of the air cylinder is fixedly connected with a rack penetrating through the installation plate main plate, and the bottom of the rack is connected with the upper surface of the lower cover in a sliding mode. A support is arranged at the end of the lower cover, a sensor is installed on the support, and a first rotating bottom plate is installed on the upper surface, located on one side of the rack, of the lower cover. The novel cap disassembling claw is small and light in structure, convenient to disassemble and replace, easy to maintain, simple in core structure, high in cap disassembling and replacing success rate and reliable in functionality, improves the cap disassembling success rate and prolongs the service life through the novel cap disassembling claw structure design, and adapts to various use working conditions such as fixed support and mechanical arm grabbing.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding machine application components, and in particular relates to a pneumatic cap removal mechanism. Background Technology

[0002] Currently, the mainstream design applications of automatic cap removal structures in the industry can be divided into two main categories based on power drive: electric and pneumatic. Based on the specific cap removal method, they can be divided into screw-type and pry-type. Most electric cap removal machines use grippers to clamp and twist the cap for removal. Pneumatic machines, due to the motion characteristics of the cylinder, can better adapt to both screw-type and pry-type working modes. Screw-type cap removal mainly achieves cap removal through the contraction and clamping of the grippers within the power mechanism combined with rotation. Pry-type cap removal uses a wedge mechanism to convert the cylinder's power into a pulling or pushing force for cap removal.

[0003] The existing electrode cap replacement mechanism has the following shortcomings:

[0004] 1. Driven by a motor, it rotates continuously, which poses a risk of damaging the electrode rod;

[0005] 2. The gripper clamping structure is poorly designed, resulting in low reliability of cap removal;

[0006] 3. The cap removal mechanism is prone to cap sticking, affecting the cap removal sequence;

[0007] 4. Uneven force applied to the electrode cap by the prying mechanism can easily damage the electrode rod. Utility Model Content

[0008] The purpose of this utility model is to provide a pneumatic cap removal mechanism to solve the technical problems mentioned in the background art.

[0009] To achieve the above objectives, the specific technical solution of this utility model is as follows: A pneumatic cap removal mechanism includes a mounting plate main board, a cylinder mounted on one side of the mounting plate main board, and a lower cover mounted on the other side. A rack penetrating the mounting plate main board is fixedly connected to the piston rod end of the cylinder. The bottom of the rack is slidably connected to the upper surface of the lower cover. A bracket is provided at the end of the lower cover, and a sensor is mounted on the bracket. A first rotating base plate is mounted on the upper surface of the lower cover, located on one side of the rack. A gear is rotatably connected to the middle part of the upper surface of the first rotating base plate. The gear is rotatably connected to the rack, and the gear and rack mesh with each other. A second rotating base plate corresponding to the first rotating base plate is rotatably connected to the upper surface of the gear. An upper cover corresponding to the lower cover is mounted on the second rotating base plate. A pressure cap connected to the second rotating base plate is provided on the surface of the upper cover. Three cap removal claws arranged in a circumferential array are provided inside the gear.

[0010] Preferably, the surface of the mounting plate main board is provided with a sliding opening, the size of which matches the size of the rack, and the rack is slidably connected to the sliding opening.

[0011] Preferably, the upper and lower surfaces of the rack are provided with grooves along their length, and the upper surface of the lower cover and the inner wall of the top of the sliding opening are provided with anti-wear guide strips, and the grooves are slidably connected to the anti-wear guide strips.

[0012] Preferably, the gear has a boss on both the upper and lower surfaces. The boss is fitted into the inner circular hole of the first rotating base plate and the second rotating base plate. A through hole is provided in the middle part of the surface of the boss. The side wall of the through hole has three movable openings arranged in a circumferential array. The cap removal claw is located inside the movable opening.

[0013] Preferably, the length of the cap-removing claw is longer than the length of the movable opening, and a limiting opening is provided on one side of each movable opening. A limiting block is provided on the side wall of the cap-removing claw. The limiting block is located inside the limiting opening and is slidably connected to the limiting opening. The limiting block is connected to the inner wall of the limiting opening by three springs.

[0014] Preferably, the inner walls of the inner circular holes of the first rotating base plate and the second rotating base plate are provided with three asymptotic notch slots arranged in a circumferential array, and the rear end of the cap removal claw contacts the inner wall of the asymptotic notch slot.

[0015] The pneumatic cap-removing mechanism of this utility model has the following advantages:

[0016] This utility model has a compact and lightweight structure, is easy to disassemble and maintain, has a simple core structure, a high success rate in cap replacement, and reliable functionality. Through the design of a new cap removal claw structure, the success rate of cap removal and service life are improved, and it is suitable for various working conditions such as fixed brackets and robotic arm gripping. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a diagram showing the connection between the gear and the rack in this utility model;

[0020] Figure 3 This is a schematic diagram of the cap-removing claw in this utility model;

[0021] Figure 4 This is a top view of the gear in this utility model.

[0022] The markings in the diagram are as follows: 1. Cylinder; 2. Mounting plate main board; 3. Anti-wear guide strip; 4. Rack; 5. Lower cover; 6. Bracket; 7. Sensor; 8. First rotating base plate; 9. Gear; 10. Cap removal claw; 11. Second rotating base plate; 12. Upper cover; 13. Pressure cap; 14. Sliding port; 15. Sliding groove; 16. Asymptotic notch groove; 17. Through hole; 18. Movable port; 19. Limiting port; 20. Limiting block; 21. Spring. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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, they should not be construed as limitations on the embodiments of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0027] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0028] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a pneumatic cap removal mechanism of this utility model.

[0029] like Figure 1-4 As shown, this utility model discloses a pneumatic cap removal mechanism, including a mounting plate main board 2. A cylinder 1 is mounted on one side of the mounting plate main board 2, and a lower cover 5 is mounted on the other side. A rack 4, penetrating the mounting plate main board 2, is fixedly connected to the piston rod end of the cylinder 1. The bottom of the rack 4 is slidably connected to the upper surface of the lower cover 5. A sliding opening 14 is provided on the surface of the mounting plate main board 2, the size of which matches the size of the rack 4. The rack 4 is slidably connected to the sliding opening 14, allowing the rack 4 to move through the mounting plate main board 2 for reciprocating motion. Sliding grooves 15 are provided on both sides of the upper and lower surfaces of the rack 4 along its length. Anti-wear guide strips 3 are provided on both sides of the upper surface of the lower cover 5 and on both sides of the inner wall of the top of the sliding opening 14. The sliding grooves 15 are slidably connected to the anti-wear guide strips 3, and the rack 4 reciprocates under the limitation and support of the four anti-wear guide strips 3.

[0030] A bracket 6 is provided at the end of the lower cover 5, and a sensor 7 is installed on the bracket 6. A first rotating base plate 8 is installed on the upper surface of the lower cover 5 on one side of the rack 4. A gear 9 is rotatably connected to the middle part of the upper surface of the first rotating base plate 8. The gear 9 is rotatably connected to the rack 4 and the gear 9 and the rack 4 mesh with each other. A second rotating base plate 11 is rotatably connected to the upper surface of the gear 9, which is distributed correspondingly to the first rotating base plate 8. An upper cover 12 is installed on the second rotating base plate 11, which is distributed correspondingly to the lower cover 5. A pressure cap 13 connected to the second rotating base plate 11 is provided on the surface of the upper cover 12. Three cap removal claws 10 are arranged in a circumferential array inside the gear 9. Both the upper and lower surfaces of gear 9 are provided with bosses, which are fitted into the inner circular holes of the first rotating base plate 8 and the second rotating base plate 11. A through hole 17 is provided in the middle part of the surface of the boss, and three movable openings 18 arranged in a circumferential array are provided on the side wall of the through hole 17. The cap removal claw 10 is located inside the movable opening 18. Gear 9 is located between the first rotating base plate 8 and the second rotating base plate 11. The surface of the boss on gear 9 is flush with the surface of the first rotating base plate 8 and the second rotating base plate 11. The first rotating base plate 8 and the second rotating base plate 11 control the rotation and positioning of gear 9 and provide rotation support. When the cylinder 1 is activated to drive the rack 4 to reciprocate, the rack 4 drives gear 9 to rotate in the inner circular holes of the first rotating base plate 8 and the second rotating base plate 11. The length of the cap removal claw 10 is longer than the length of the movable opening 18. Each movable opening 18 has a limit opening 19 on one side. The side wall of the cap removal claw 10 has a limit block 20. The limit block 20 is located inside the limit opening 19 and is slidably connected to the limit opening 19. The limit block 20 is connected to the inner wall of the limit opening 19 by three springs 21. The cap removal claw 10 is kept in a retracted state by the three springs 21. The inner walls of the inner circular holes of the first rotating base plate 8 and the second rotating base plate 11 are provided with three asymptotic notch grooves 16 arranged in a circumferential array. The rear end of the cap removal claw 10 contacts the inner wall of the asymptotic notch groove 16. The inner circular holes of the first rotating base plate 8 and the second rotating base plate 11 have asymptotic notch grooves. 16. When cylinder 1 is in the retracted state, all three cap removal claws 10 are at the maximum radial dimension of the asymptotic notch 16. At this time, the cap removal claws 10 are in the retracted state. When gear 9 is driven and rotates within the first rotating base plate 8 and the second rotating base plate 11, it will rotate the three cap removal claws 10 together. At this time, the arc ends of the three cap removal claws 10 move on the surface of the asymptotic notch 16. When they move to the position where the radial dimension of the asymptotic notch 16 is small, the three cap removal claws 10 are squeezed towards the center and tightened. The diameter of the envelope circle of their claw tips decreases, and the claw tips will grab into the outer diameter surface of the electrode cap and rotate to loosen the electrode cap, so that the clamping fit between the electrode cap and the electrode rod is released, completing the key step of cap removal.

[0031] The working principle of this pneumatic cap removal mechanism is as follows: First, the robot's stationary arm electrode rod (with the electrode cap) is moved to the detection range of sensor 7. The sensor signal is true; if there is no signal, the entire cap removal process stops. The robot's stationary arm electrode rod (with the electrode cap) is moved to the vicinity of the corresponding electrode cap removal port, making the welding torch electrode rod coaxial with the cap removal hole, and the angle between the electrode rod and the plane of the pressure cap 13 is 90°. This position is memorized. After confirming that the electrode cap will not collide with the cap removal hole, the electrode cap is inserted along the axis of the cap removal hole, making the end face of the electrode cap 2mm-3mm away from the pressure cap 13. This position is memorized. Cylinder 1 is vented, and the cap removal claw 10 extends. The cap removal claw 10 twists the electrode cap, and twisting stops after cylinder 1 reaches its stroke limit. After cylinder 1 reaches its limit, the welding torch is moved in the opposite direction at a speed of 2mm / s to retract the welding torch electrode rod. Cylinder 1 retracts, the cap removal claw 10 releases, and the electrode cap falls freely into the cap receiving tray module. Move the electrode rod of the stationary arm (with the cap removed) to sensor 7 for detection. If the signal is false (if there is a signal, stop the entire cap removal process and the robot will report an error);

[0032] At this point, the process of removing the hat while keeping the arms still is complete.

[0033] Repeat the above steps to complete the removal of the boom electrode cap.

[0034] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A pneumatic cap-removing mechanism, characterized in that: The system includes a mounting plate main board (2), on one side of which a cylinder (1) is mounted, and on the other side a lower cover (5) is mounted. A rack (4) penetrating the mounting plate main board (2) is fixedly connected to the piston rod end of the cylinder (1). The bottom of the rack (4) is slidably connected to the upper surface of the lower cover (5). A bracket (6) is provided at the end of the lower cover (5), and a sensor (7) is mounted on the bracket (6). A first rotating base plate (8) is mounted on the upper surface of the lower cover (5) on one side of the rack (4). The upper surface of the first rotating base plate (8) contains... A gear (9) is rotatably connected to the gear (9) and a rack (4), and the gear (9) and the rack (4) mesh with each other. A second rotating base plate (11) corresponding to the first rotating base plate (8) is rotatably connected to the upper surface of the gear (9). An upper cover (12) corresponding to the lower cover (5) is installed on the second rotating base plate (11). A pressure cap (13) connected to the second rotating base plate (11) is provided on the surface of the upper cover (12). Three cap removal claws (10) arranged in a circular array are provided inside the gear (9).

2. The pneumatic cap-removing mechanism according to claim 1, characterized in that: The surface of the mounting plate main board (2) is provided with a sliding opening (14), the size of the sliding opening (14) matches the size of the rack (4), and the rack (4) is slidably connected to the sliding opening (14).

3. The pneumatic cap-removing mechanism according to claim 1, characterized in that: The upper and lower surfaces of the rack (4) are provided with grooves (15) along their length direction. The upper surface of the lower cover (5) and the inner wall of the top of the slide (14) are provided with anti-wear guide strips (3). The grooves (15) and the anti-wear guide strips (3) are slidably connected.

4. The pneumatic cap-removing mechanism according to claim 1, characterized in that: The gear (9) has bosses on both its upper and lower surfaces. The bosses are fitted into the inner circular holes of the first rotating base plate (8) and the second rotating base plate (11). A through hole (17) is provided in the middle part of the surface of the boss. Three movable openings (18) are arranged in a circular array on the side wall of the through hole (17). The cap removal claw (10) is located inside the movable opening (18).

5. A pneumatic cap-removing mechanism according to claim 4, characterized in that: The length of the cap removal claw (10) is longer than the length of the movable opening (18). Each movable opening (18) has a limiting opening (19) on one side. The side wall of the cap removal claw (10) is provided with a limiting block (20). The limiting block (20) is located inside the limiting opening (19) and is slidably connected to the limiting opening (19). The limiting block (20) and the inner wall of the limiting opening (19) are connected by three springs (21).

6. A pneumatic cap-removing mechanism according to claim 4, characterized in that: The inner walls of the inner circular holes of the first rotating base plate (8) and the second rotating base plate (11) are provided with three asymptotic notch grooves (16) arranged in a circumferential array. The rear end of the cap removal claw (10) is in contact with the inner wall of the asymptotic notch groove (16).

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