Mechanical arm structure for welding

Abstract

The utility model discloses a mechanical arm structure for welding, and relates to the technical field of mechanical arms. The device comprises a replacement mechanism and a mechanical arm, a protection mechanism is arranged at the bottom of the replacement mechanism, a connecting block is fixedly connected to the bottom of the mechanical arm, a sliding groove is formed in the connecting block, and a first air pressure pipe is fixedly connected to the top of the front face of the connecting block. Through the arrangement of the extrusion block, the ball can slightly move towards the interior of the clamping groove to push the extrusion block upwards, the extrusion block is clamped into the V-shaped groove to prevent the butt joint block from falling off, the extrusion block moves upwards to drive the sliding plate to move upwards, the sliding plate is made to be higher than the second air pressure pipe, and then the second air pressure pipe is started to inject air pressure. And air pressure is located at the bottom of the sliding plate and then jacks the sliding plate, the sliding plate moves upwards to drive the extrusion block to move upwards, the extrusion block is completely separated from the balls, the butt joint block is separated from the connecting block for replacement, operation is easy, and replacement is rapid.

Description

Technical Field

[0001] The utility model belongs to the technical field of robotic arms, and particularly relates to a robotic arm structure for welding. Background Art

[0002] A robotic arm is a mechanical device that can simulate the movement of a human arm. It usually consists of multiple movable joints and actuators and is used to perform various tasks such as material handling, assembly, welding, spraying, etc. Robotic arms are widely used in industrial production lines, medical equipment, warehousing and logistics, military, and space exploration;

[0003] When installing and disassembling, tools such as screwdrivers are required for assistance, which causes the staff to spend a certain amount of time during installation and disassembly work. Also, it is difficult to operate in some narrow spaces, and it also increases the work difficulty to a certain extent. For this reason, we provide a robotic arm structure for welding. Content of the Utility Model

[0004] The purpose of the utility model is to provide a robotic arm structure for welding. By pushing the ball downward with the extrusion block to move outward and contact the inner wall of the docking block, a fast connection method is realized, which solves the problems that when installing and disassembling, tools such as screwdrivers are required for assistance, resulting in the staff spending a certain amount of time during installation and disassembly work, being difficult to operate in some narrow spaces, and increasing the work difficulty to a certain extent.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a robotic arm structure for welding, including a replacement mechanism and a robotic arm. A protection mechanism is arranged at the bottom of the replacement mechanism. The bottom of the robotic arm is fixedly connected with a connection block. A sliding groove is opened inside the connection block. A first air pressure pipe is fixedly connected to the top of the front surface of the connection block, and a second air pressure pipe is fixedly connected to the bottom of the front surface of the connection block. A sliding plate is slidably connected to the inner wall of the sliding groove. An extrusion block is fixedly connected to the bottom of the sliding plate. A plugging ring is fixedly connected to the bottom of the connection block;

[0007] A clamping groove is opened inside the plugging ring. There are several clamping grooves, and several clamping grooves are annularly arranged around the extrusion block. A ball is slidably connected to each of the several clamping grooves. Moving the sliding plate upward will drive the extrusion block to move upward, causing the extrusion block to completely disengage from the ball and enabling the docking block to disengage from the connection block for replacement. The operation is simple and the replacement is rapid.

[0008] Further, the outer surface of the skateboard is adapted to the inner wall of the sliding groove. The bottom of the extrusion block penetrates through the connecting block and extends to the outside. A docking block is in contact with the bottom of the connecting block. The outer surface of the ball is in contact with the inner wall of the docking block. The ball is pushed out of the plugging ring downward by the extrusion block and is extruded, so that it is in contact with the inner wall of the docking block.

[0009] Further, the sides of the balls close to each other are in contact with the outer surface of the extrusion block. A V-shaped groove is formed on the outer surface of the extrusion block. A first rotating motor is fixedly connected to the bottom of the docking block. The outer surface of the plugging ring is in contact with the inner wall of the docking block. The welding device is driven to move by the rotation of the first rotating motor.

[0010] Further, the protection mechanism includes a connecting rod. The bottom output end of the first rotating motor is fixedly connected to the connecting rod. A welding device is fixedly connected inside the end of the connecting rod away from the first rotating motor. The bottom of the welding device penetrates through the connecting rod and extends to the outside. A protective cover is fixedly connected to the outer surface of the welding device. By overflowing the water flow through the flow groove, the flowing range of the water flow can be increased.

[0011] Further, a flow groove is formed inside the protective cover. A water inlet pipe is fixedly connected to the front of the protective cover, and it can be adjusted according to the height of the welding device.

[0012] Further, the bottom of the water inlet pipe is fixedly connected to the bottom inner wall of the flow groove. A sliding groove one is formed inside the protective cover. A movable plate is slidably connected to the inner wall of the sliding groove one. The bottom of the movable plate penetrates through the protective cover and extends to the outside. The water flow will flow downward along the inner wall of the protective cover, blocking and cooling the debris generated during welding, preventing other positions of the workpiece from being damaged, and protecting the workpiece.

[0013] The utility model has the following beneficial effects:

[0014] 1. By setting the extrusion block in the utility model, when the first air pressure pipe stops, the extrusion on the skateboard will be cancelled, and the ball will move slightly into the card slot to push the extrusion block upward and snap into the V-shaped groove to prevent the docking block from falling. The upward movement of the extrusion block drives the skateboard to move upward, making the skateboard higher than the second air pressure pipe. Then, the second air pressure pipe is started to inject air pressure, and the air pressure is located at the bottom of the skateboard and then jacks it up. By moving the skateboard upward, the extrusion block will be driven to move upward, so that the extrusion block is completely separated from the ball, and the docking block is separated from the connecting block for replacement. The operation is simple and the replacement is rapid.

[0015] 2. The utility model is provided with a protective cover. The welding device is driven to move by the rotation of the robotic arm, so that the welding device contacts the workpiece. The rotation motor 1 is started to adjust the welding position. When the welding device contacts the workpiece, the movable plate will be pushed into the sliding groove 1, and the bottom will contact the surface of the workpiece. Water flows into the flow groove through the water inlet pipe. When there is too much water in the flow groove, the water will flow downward along the inner wall of the protective cover, blocking and cooling the debris generated during welding, avoiding damage to other positions of the workpiece, and protecting the workpiece.

[0016] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

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

[0019] Figure 2 It is a schematic cross-sectional structure diagram of the right side of the docking block of the present utility model;

[0020] Figure 3 For the present utility model Figure 2 It is an enlarged structure diagram of A in the present utility model;

[0021] Figure 4 It is a schematic diagram of the right side structure of the protective cover of the present utility model;

[0022] Figure 5 It is a schematic diagram of the overall structure of the connection block of the present utility model.

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Replacement mechanism; 101. Robotic arm; 102. Connection block; 103. Pneumatic tube 1; 104. Pneumatic tube 2; 105. Sliding groove; 106. Slide plate; 107. Extrusion block; 108. Insertion ring; 109. Ball; 110. Rotation motor 1; 111. V-shaped groove; 112. Docking block; 113. Card slot; 2. Protection mechanism; 206. Connecting rod; 207. Welding device; 208. Protective cover; 209. Movable plate; 210. Water inlet pipe; 211. Flow groove; 212. Sliding groove 1. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model.

[0026] Please refer to Figures 1-5 As shown, the present utility model is a robotic arm structure for welding, including a replacement mechanism 1 and a robotic arm 101. A protection mechanism 2 is provided at the bottom of the replacement mechanism 1. A connection block 102 is fixedly connected to the bottom of the robotic arm 101. A sliding groove 105 is formed inside the connection block 102. A first pneumatic tube 103 is fixedly connected to the top of the front surface of the connection block 102, and a second pneumatic tube 104 is fixedly connected to the bottom of the front surface of the connection block 102. A sliding plate 106 is slidably connected to the inner wall of the sliding groove 105. An extrusion block 107 is fixedly connected to the bottom of the sliding plate 106. A plug-in ring 108 is fixedly connected to the bottom of the connection block 102;

[0027] A card slot 113 is formed inside the plug-in ring 108. There are several card slots 113, and several card slots 113 are annularly arranged around the extrusion block 107. A ball 109 is slidably connected to each of the several card slots 113. When the first pneumatic tube 103 stops, the extrusion of the sliding plate 106 will be cancelled, and the ball 109 will slightly move into the card slot 113 to push the extrusion block 107 upward and lock it into the V-shaped groove 111 to prevent the docking block 112 from falling off. The upward movement of the extrusion block 107 drives the sliding plate 106 to move upward, making the sliding plate 106 higher than the second pneumatic tube 104. Then, the second pneumatic tube 104 is started to inject air pressure, and the air pressure is located at the bottom of the sliding plate 106 to lift it. By moving the sliding plate 106 upward, the extrusion block 107 will be driven to move upward, causing the extrusion block 107 to completely disengage from the ball 109, and the docking block 112 to disengage from the connection block 102 for replacement. The operation is simple and the replacement is rapid.

[0028] The outer surface of the sliding plate 106 is adapted to the inner wall of the sliding groove 105. The bottom of the extrusion block 107 penetrates through the connection block 102 and extends to the outside. A docking block 112 is in contact with the bottom of the connection block 102. The outer surface of the ball 109 is in contact with the inner wall of the docking block 112.

[0029] The mutually adjacent sides of the balls 109 are in contact with the outer surface of the extrusion block 107. A V-shaped groove 111 is formed on the outer surface of the extrusion block 107. A first rotating motor 110 is fixedly connected to the bottom of the docking block 112. The outer surface of the plug-in ring 108 is in contact with the inner wall of the docking block 112.

[0030] The protection mechanism 2 includes a connecting rod 206. The bottom output end of the first rotating motor 110 is fixedly connected to the connecting rod 206. Inside the end of the connecting rod 206 away from the first rotating motor 110, a welding device 207 is fixedly connected.

[0031] The bottom of the welding device 207 penetrates through the connecting rod 206 and extends to the outside. A protective cover 208 is fixedly connected to the outer surface of the welding device 207.

[0032] A flow channel 211 is opened inside the protective cover 208. A water inlet pipe 210 is fixedly connected to the front of the protective cover 208.

[0033] The bottom of the water inlet pipe 210 is fixedly connected to the bottom inner wall of the flow channel 211. A first sliding groove 212 is opened inside the protective cover 208. The mechanical arm 101 rotates to drive the welding device 207 to move, so that the welding device 207 contacts the workpiece. By starting the first rotating motor 110, the welding position is adjusted. When the welding device 207 contacts the workpiece, the movable plate 209 will be pushed into the first sliding groove 212, and the bottom will contact the surface of the workpiece. Water flows into the flow channel 211 through the water inlet pipe 210. When there is too much water inside the flow channel 211, the water will flow downward along the inner wall of the protective cover 208, blocking and cooling the debris generated during welding, preventing other positions of the workpiece from being damaged, and protecting the workpiece.

[0034] A movable plate 209 is slidably connected to the inner wall of the first sliding groove 212. The bottom of the movable plate 209 penetrates through the protective cover 208 and extends to the outside.

[0035] A specific application of this embodiment is as follows: After the staff installs the device at the designated position, the robotic arm 101 rotates to drive the welder 207 to move, so that the welder 207 contacts the workpiece, and the rotation motor 110 is started to adjust the welding position. When the welder 207 contacts the workpiece, the movable plate 209 will be pushed into the first sliding groove 212, and the bottom will contact the surface of the workpiece. Water flows into the flow groove 211 through the water inlet pipe 210. When there is too much water flow inside the flow groove 211, the water will flow downward along the inner wall of the protective cover 208 to block and cool the debris generated during welding, avoiding damage to other positions of the workpiece and protecting the workpiece. When the welder 207 needs to be replaced, first stop the first air pressure pipe 103. When the first air pressure pipe 103 stops, the extrusion on the slide plate 106 will be cancelled. At the same time, the docking block 112 will fall downward, and the ball 109 will move slightly into the card slot 113 to push the extrusion block 107 upward, and at the same time, it will be stuck into the V-shaped groove 111. The left side of the ball 109 is not completely separated from the inner side of the docking block 112 and is still in contact, preventing the docking block 112 from falling. The extrusion block 107 moves upward to drive the slide plate 106 to move upward, so that the slide plate 106 is higher than the second air pressure pipe 104. Then start the second air pressure pipe 104 to inject air pressure, and the air pressure is located at the bottom of the slide plate 106 and then jacks it up. By moving the slide plate 106 upward, the extrusion block 107 will be driven to move upward, so that the extrusion block 107 is completely separated from the ball 109, and the docking block 112 is separated from the connecting block 102 for replacement. The operation is simple and the replacement is rapid.

[0036] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A welding robot arm structure, comprising a replacement mechanism (1) and a robot arm (101), wherein a protection mechanism (2) is provided at the bottom of the replacement mechanism (1), and a connection block (102) is fixedly connected to the bottom of the robot arm (101), characterized in that: The connecting block (102) is provided with a sliding groove (105) inside, the top of the front side of the connecting block (102) is fixedly connected to a first air pressure tube (103), the bottom of the front side of the connecting block (102) is fixedly connected to a second air pressure tube (104), the inner wall of the sliding groove (105) is slidably connected to a slide plate (106), the bottom of the slide plate (106) is fixedly connected to an extrusion block (107), and the bottom of the connecting block (102) is fixedly connected to a plug-in ring (108); A slot (113) is provided inside the plug-in ring (108), and a plurality of the slots (113) are provided. The plurality of slots (113) are arranged in a circular array with the extrusion block (107) as the center, and a ball (109) is slidably connected inside the plurality of slots (113).

2. A welding robot arm structure according to claim 1, characterized in that: The outer surface of the slide plate (106) is matched with the inner wall of the sliding groove (105); the bottom of the extrusion block (107) passes through the connecting block (102) and extends to the outside; the bottom of the connecting block (102) contacts with a docking block (112); and the outer surface of the ball (109) contacts with the inner wall of the docking block (112).

3. A welding robot arm structure according to claim 2, characterized in that: The side of the balls (109) close to each other is in contact with the outer surface of the extrusion block (107), the outer surface of the extrusion block (107) is provided with a V-shaped groove (111), the bottom of the docking block (112) is fixedly connected to a rotating motor (110), and the outer surface of the plug-in ring (108) is in contact with the inner wall of the docking block (112).

4. A welding robot arm structure according to claim 3, characterized in that: The protection mechanism (2) comprises a connecting rod (206), the bottom output end of the rotating motor (110) is fixedly connected to the connecting rod (206), and the end of the connecting rod (206) away from the rotating motor (110) is fixedly connected to a welder (207) inside.

5. A welding robot arm structure according to claim 4, characterized in that: The bottom of the welder (207) passes through the connecting rod (206) and extends to the outside, and a protective cover (208) is fixedly connected to the outer surface of the welder (207).

6. A welding robot arm structure according to claim 5, characterized in that: A flow groove (211) is provided inside the protective cover (208), and a water inlet pipe (210) is fixedly connected to the front of the protective cover (208).

7. A welding robot arm structure according to claim 6, characterized in that: The bottom of the water inlet pipe (210) is fixedly connected to the bottom of the inner wall of the flow groove (211), and a sliding groove (212) is provided inside the protective cover (208).

8. A welding robot arm structure according to claim 7, characterized in that: The inner wall of the sliding groove 1 (212) is slidably connected with a movable plate (209), and the bottom of the movable plate (209) passes through the protective cover (208) and extends to the outside.

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