Quick change mechanism of industrial robot

Abstract

The utility model discloses an industrial robot quick-change mechanism which comprises a bottom plate, a curved surface pressing plate, a bottom plate connecting column, a welding gun fixing groove and a welding gun pressing plate and is made of aluminum alloy light materials, the bottom plate connecting column is used for positioning and installing the mechanism on a robot flange plate or a composite tool, and the overall weight is reduced through surrounding weight reduction through holes; the curved-surface pressing plate is provided with a groove, secondary reinforcement under special conditions is facilitated, the cooperative robot band-type brake button is avoided through the avoiding through hole, and normal operation of the cooperative band-type brake button is ensured; the size of the welding gun fixing groove can be modified and replaced according to the shape requirements of different tools, and rapid locking and accurate positioning of the tools are achieved by combining the adjustable welding gun pressing plate. The modular, lightweight and universal design thought is adopted, the tool switching time is shortened to be within 10 seconds, the manufacturing cost is effectively reduced, the load of the robot is relieved, and the robot is suitable for high-frequency and multi-tool operation requirements in small and medium-sized industrial scenes.

Description

Technical Field

[0001] This utility model relates to the field of industrial robot manufacturing equipment technology, specifically to a quick-change mechanism for industrial robots. Background Technology

[0002] Existing quick-change devices for industrial robots mostly employ screw-connection structures, relying on complex pneumatic or hydraulic systems, resulting in high costs and low switching efficiency. Furthermore, traditional fixtures are heavy and poorly adaptable, making them unsuitable for miniaturized production scenarios. While existing patented quick-change devices for robots utilize modular designs, their connection structures are complex, manufacturing costs remain high, and they lack dedicated, rapid fixing solutions for tools such as welding torches. Therefore, a low-cost, lightweight, and highly adaptable quick-change fixture is needed. Utility Model Content

[0003] The purpose of this utility model is to provide a quick-change mechanism for industrial robots. By adopting a "one-face, one-pin, two-point" positioning and installation method, the mechanism can be quickly installed and removed from the robot, and tools can be quickly installed and removed from the mechanism. This solves the problems of high cost, low switching efficiency, and insufficient adaptability in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An industrial robot quick-change mechanism includes a base plate, a base plate connecting column at the center of the base plate, a threaded through hole at the center of the base plate connecting column, and four weight-reducing through holes distributed around it; a curved pressure plate is fixedly connected to the left side of the base plate, the upper part of the curved pressure plate has a groove, the center of the groove has an avoidance through hole, and the lower part of the curved pressure plate has two threaded through holes for fixed connection with the base plate; a welding gun fixing groove is fixedly connected to the right side of the base plate, each side of the welding gun fixing groove has a threaded through hole, and the bottom of the groove has two threaded through holes.

[0006] The four threaded through holes on the end face of the welding gun fixing groove are used to fix the welding gun pressure plate. The center and both sides of the welding gun pressure plate are provided with a total of six threaded through holes for fixing the welding gun and adjusting its installation position. The side of the welding gun fixing groove is designed with a chamfer. The base plate, curved pressure plate, base plate connecting column, welding gun fixing groove and welding gun pressure plate are all made of lightweight aluminum alloy material.

[0007] Preferably, the four weight-reducing through holes of the base plate connecting column are symmetrically distributed around the threaded through hole.

[0008] Preferably, the curved pressure plate is designed with a groove, the depth of which is adapted to the height of the brake button of the collaborative robot; the center of the groove is provided with an avoidance through hole to ensure the normal use of the brake button of the collaborative robot.

[0009] Preferably, the spacing of the central threaded through holes of the welding torch pressure plate is adjustable to accommodate welding torches of different sizes.

[0010] In this invention, the welding torch fixing groove can be adjusted in size according to the size and shape of the tool to accommodate the installation of different tools.

[0011] The working process of this utility model is as follows:

[0012] The "one surface, one pin, two points" positioning and installation method: "one surface" refers to the surface contact between the upper surface of the base plate and the lower surface of the robot composite tool (or robot end effector); "one pin" refers to the base plate connecting post acting as a pin shaft, inserted into the hole of the composite tool (or robot end effector); "two points" refers to the screws on the upper part of the curved pressure plate hitting the composite tool (or robot end effector) to form two fixing points.

[0013] Fixture installation process: Align the base plate connecting post at the center of the base plate with the inner hole of the robot flange or composite tool, with the lower ends of the base plate and the robot flange or composite tool facing each other. Utilize the top force of the two screws on the upper part of the curved pressure plate on the robot end effector, as well as the frictional force generated on the contact surface by the reaction force between the base plate connecting post and the inner hole of the robot flange or composite tool, to achieve the locking and fixing of the mechanism. This adopts a "one-face, one-pin, two-point" positioning and installation method. At the same time, the groove and avoidance through hole avoid the robot brake button to ensure the normal operation of the brake button when installed on the collaborative robot.

[0014] Tool fixing process: Insert the welding torch into the welding torch fixing slot, and adjust and fix the position of the welding torch by connecting the six screws on the welding torch pressure plate and the screws on both sides of the welding torch fixing slot.

[0015] Quick switching process: When a tool needs to be changed, simply loosen the adjusting screw of the welding gun pressure plate, remove the current tool, replace it with the new tool, and then tighten it again. No robot posture adjustment or reprogramming is required throughout the process, and the switching time can be completed within 10 seconds.

[0016] Job execution process:

[0017] When installing tools similar to the welding torch described in the patent, the reliable connection between the welding torch fixing groove and the fixing screws on the welding torch pressure plate, along with the "one-face-one-pin-two-point" positioning and installation method of the mechanism with the robot or composite tool, ensures convenient installation and removal of the clamped tool, as well as stability and reliability during operation. Furthermore, the groove in the curved pressure plate can, in certain situations, secure the clamp to the robot, further ensuring reliable positioning of the mechanism; the through hole in the center of the groove ensures the normal operation of the collaborative robot's brake button.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) This utility model is made of aluminum alloy material and is designed with a modular design concept. The welding gun fixing groove and welding gun pressure plate have good replacement characteristics. The manufacturing cost is significantly reduced compared with the traditional quick change device, and the application scope is further expanded to meet the economic needs of small and medium-sized production scenarios.

[0020] (2) This utility model adopts the positioning and installation form of "one side, one pin and two points". It relies on the top force of the two screws on the upper part of the curved pressure plate on the end of the robot and the friction force generated at the contact position between the bottom plate connecting column and the robot flange or the inner hole of the composite tool to achieve the quick locking and fixing of the mechanism.

[0021] (3) By adjusting the welding torch fixing groove and the mounting screws on the welding torch pressure plate, the tool can be quickly clamped and its position adjusted. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 This is a top view of the present invention;

[0024] Figure 3 This is the left view of the present invention;

[0025] Figure 4 This is a cross-sectional view of the present invention;

[0026] Figure 5 This is an overall view of the present invention;

[0027] Figure 6 This is a schematic diagram of the assembly structure of this utility model;

[0028] Figure 7 This is a left view of the assembly structure of this utility model;

[0029] Figure 8 This is a bottom view of the assembly structure of this utility model;

[0030] In the diagram: 1-base plate, 2-curved pressure plate, 3-base plate connecting column, 4-welding gun fixing groove, 5-welding gun pressure plate, 6-threaded through hole. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] like Figure 1-8The illustrated quick-change mechanism for an industrial robot includes a base plate 1. A base plate connecting post 3 is located at the center of the base plate 1. A threaded through hole 6 is formed at the center of the base plate connecting post 3, and four weight-reducing through holes are symmetrically distributed around the threaded through hole 6. A curved pressure plate 2 is fixedly connected to the left side of the base plate 1. A groove is formed on the upper part of the curved pressure plate 2, the depth of which is adapted to the height of the collaborative robot's brake button. An clearance through hole is located at the center of the groove. Two threaded through holes 6 are formed on the lower part of the curved pressure plate 2 for fixed connection with the base plate 1. A welding torch is fixedly connected to the right side of the base plate 1. The welding torch fixing groove 4 has a threaded through hole 6 on each side, two threaded through holes 6 at its bottom, and four threaded through holes 6 on its end face. The four threaded through holes 6 on the end face of the welding torch fixing groove 4 are connected by screws to the welding torch pressure plate 5. The welding torch pressure plate 5 has a total of six threaded through holes 6 at its center and on both sides. The spacing of the central threaded through hole 6 is adjustable to accommodate welding torches of different sizes, and is used to fix the welding torch and adjust its installation position. The base plate 1, curved pressure plate 2, base plate connecting column 3, welding torch fixing groove 4, and welding torch pressure plate 5 are all made of lightweight materials such as aluminum alloy.

[0033] The working process of this utility model is as follows:

[0034] Fixture installation process: The positioning installation adopts the "one face, one pin, two points" method. The bottom plate connecting column 3 is aligned with the inner hole of the robot flange or composite tool, and the bottom plate 1 and the lower end face of the robot flange or composite tool face each other. The locking and fixing of the mechanism is achieved by the frictional force formed on the contact surface by the top force of the two screws on the upper part of the curved pressure plate 2 on the end of the robot and the reaction force of the bottom plate connecting column 3 and the inner hole of the robot flange or composite tool.

[0035] Tool fixing process: Insert the welding torch into the welding torch fixing groove 4, and adjust and fix the position of the welding torch by connecting the six screws of the welding torch pressure plate 5 and the screws on both sides of the welding torch fixing groove 4.

[0036] Quick switching process: When a tool needs to be changed, simply loosen the screws on the welding gun pressure plate 5, remove the current tool, replace it with the new tool, and then tighten it again. No robot posture adjustment or reprogramming is required throughout the process, and the switching time is controlled within 10 seconds.

[0037] Operation Execution Process: When installing tools similar to the welding torch described in the patent, the reliable connection between the welding torch fixing groove and the fixing screws on the welding torch pressure plate, along with the "one-face-one-pin-two-point" positioning and installation method of this mechanism with the robot or composite tool, ensures convenient installation and removal of the clamped tool, as well as stability and reliability during operation. Furthermore, the groove in the curved pressure plate can, in certain situations, secure the clamp to the robot, further ensuring reliable positioning of the mechanism; the through hole in the center of the groove ensures the normal operation of the collaborative robot's brake button.

[0038] The fixture design adopts a modular, lightweight, and universal approach, achieving technological breakthroughs in three dimensions: cost reduction, weight reduction, and efficiency improvement, providing a cost-effective solution for rapid tool switching in industrial robots.

[0039] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field, other equivalent modifications and improvements can be made, and these should also be considered within the protection scope of this utility model.

Claims

1. A quick-change mechanism for an industrial robot, characterized in that, The base plate (1) includes a base plate connecting column (3) at its center, a threaded through hole (6) at its center, and four weight-reducing through holes around it. A curved pressure plate (2) is fixedly connected to the left side of the base plate (1). A groove is provided on the upper part of the curved pressure plate (2), and an avoidance through hole is provided in the center of the groove. Two threaded through holes (6) are provided on the lower part of the curved pressure plate (2) for fixed connection with the base plate (1). A welding gun fixing groove (4) is fixedly connected to the right side of the base plate (1). A threaded through hole (6) is provided on each side of the welding gun fixing groove (4), and two threaded through holes (6) are provided at its bottom. The four threaded through holes (6) on the end face of the welding gun fixing groove (4) are used to fix the welding gun pressure plate (5). The center and both sides of the welding gun pressure plate (5) are provided with a total of six threaded through holes (6) for fixing the welding gun and adjusting its installation position. The side of the welding gun fixing groove (4) adopts a chamfered design. The base plate (1), curved pressure plate (2), base plate connecting column (3), welding gun fixing groove (4) and welding gun pressure plate (5) are all made of lightweight aluminum alloy material.

2. The quick-change mechanism for an industrial robot according to claim 1, characterized in that: The four weight-reducing through holes of the bottom plate connecting column (3) are symmetrically distributed around the central threaded through hole (6).

3. The quick-change mechanism for an industrial robot according to claim 1, characterized in that: The curved pressure plate (2) has a groove, and the center of the groove has a clearance hole for the robot brake button.

4. The quick-change mechanism for an industrial robot according to claim 1, characterized in that: The spacing of the central threaded through hole (6) of the welding torch pressure plate (5) is adjustable to accommodate welding torches of different sizes.

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