Mechanical arm with tail end clamp convenient to replace

Abstract

The utility model discloses a mechanical arm with a clamp convenient to replace at the tail end, which belongs to the technical field of mechanical arms, and is characterized in that the mechanical arm comprises a base, a mechanical arm and a clamp, the top of the base is fixedly connected with a fixing block, and the top of the fixing block is provided with a lifting mechanism; the lifting mechanism comprises a tray, an electric telescopic rod and an inserting block, the bottom of the tray is fixedly connected with the top of the telescopic end of the electric telescopic rod, and the problems that when a clamp at the tail end of a mechanical arm is replaced in most of the prior art, the clamp needs to be held by hand to be lifted in place, then the clamp is connected with the mechanical arm through a plurality of bolts, and the clamping efficiency is high are solved. The mechanical arm clamp solves the problems that due to the fact that the mechanical arm clamp is made of metal and is heavy, the mechanical arm clamp is difficult to replace and lift, the stability of the mechanical arm clamp is inconvenient to keep, the clamp and a mechanical arm are inconvenient to connect through bolts, and the using effect is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm which is convenient for replacing a terminal clamp. Background Art

[0002] A robotic arm refers to a complex system with high precision, multiple inputs and outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in industrial assembly, safety and explosion-proof and other fields. When grasping a workpiece, a robotic arm with a clamp at the end is required. When clamping different workpieces, different clamps are required, so the clamp at the end of the robotic arm needs to be replaced.

[0003] At present, a Chinese patent with announcement number CN219255599U discloses a robot arm end clamp, including: a robot arm end clamp quick-change top seat and a robot arm end clamp quick-change base; one end of the robot arm end clamp quick-change top seat is fixedly connected to the robot arm clamping target; one end of the robot arm end clamp quick-change base is fixedly connected to the robot arm; a guide groove is arranged at the other end of the robot arm end clamp quick-change top seat, and a boss is arranged at the other end of the robot arm end clamp quick-change base, and the shape of the boss matches the guide groove to achieve sub-mouth matching. The disclosure ensures accurate positioning between the robot arm end clamp quick-change top seat and the robot arm end clamp quick-change base through the mechanical structure design of the guide groove and the guide boss, and also ensures reliable connection between the robot arm end clamp quick-change top seat and the robot arm end clamp quick-change base.

[0004] Most of the existing methods require that when replacing the end fixture of a robotic arm, the fixture must be lifted into place by a handheld fixture, and then the fixture must be connected to the robotic arm using multiple bolts. Since the robotic arm fixture is made of metal and is heavy, it is laborious to lift and replace the robotic arm fixture, and it is inconvenient to keep the robotic arm fixture stable, and it is inconvenient to use bolts to connect the fixture to the robotic arm. Utility Model Content

[0005] The utility model provides a robotic arm that is easy to replace an end clamp, aiming to solve the problem that most of the existing end clamps of the robotic arm need to be replaced by holding the clamp in place, and then use multiple bolts to connect the clamp to the robotic arm. Since the robotic arm clamp is made of metal and is heavy, it is more laborious to replace and lift the robotic arm clamp, and it is inconvenient to keep the robotic arm clamp stable and to use bolts to connect the clamp to the robotic arm, which affects the use effect.

[0006] The utility model is implemented as follows: a mechanical arm that is convenient for replacing an end fixture comprises a base, a mechanical arm and a fixture, the top of the base is fixedly connected with a fixing block, and the top of the fixing block is provided with a lifting mechanism;

[0007] The lifting mechanism comprises a tray, an electric telescopic rod and an insert block, the bottom of the tray is fixedly connected to the top of the telescopic end of the electric telescopic rod, and the bottom of the electric telescopic rod is fixedly connected to the top of the insert block.

[0008] In order to achieve the effect of stably clamping the clamp, as a preferred mechanical arm of the utility model that is convenient for replacing the end clamp, clamps are provided on both sides of the top of the tray, and anti-slip pads are fixedly connected to the opposite sides of the two clamps.

[0009] In order to facilitate the movement of the left splint, as a preferred mechanical arm for facilitating the replacement of the end clamp of the utility model, a slide groove is opened inside the tray, and a slider is slidably connected inside the slide groove, and the top of the slider is fixedly connected to the bottom of the left splint.

[0010] In order to facilitate the movement of the left clamp, as a preferred mechanical arm for facilitating the replacement of the end clamp of the utility model, a rotating rod is provided inside the slide groove, the right side of the rotating rod passes through the slider and extends to the outside of the slider, and the surface of the rotating rod is connected to the internal thread of the slider.

[0011] In order to facilitate the rotation of the rotating rod, as a preferred mechanical arm for facilitating the replacement of the end clamp of the utility model, a bearing is provided on the right side of the rotating rod, the surface of the rotating rod is fixedly connected to the inner wall of the bearing, and the right side of the outer wall of the bearing is fixedly connected to the left side of the inner wall of the slide groove.

[0012] In order to facilitate the connection of the electric telescopic rod with the base, as a preferred mechanical arm of the utility model that is convenient for replacing the end clamp, a slot is opened inside the fixed block, the plug block is movably inserted inside the slot, and a pull ring is fixedly connected to the front side of the plug block.

[0013] In order to achieve the effect of limiting the insertion block, as a preferred mechanical arm of the utility model that is convenient for replacing the end clamp, limiting pins are provided on both sides of the top of the insertion block, limiting holes are opened on both sides of the top of the fixed block, and the bottom of the limiting pin passes through the insertion block and extends to the inside of the limiting hole.

[0014] In order to facilitate the horizontal storage of the electric telescopic rod, as a preferred mechanical arm for facilitating the replacement of the end clamp of the utility model, the front and rear sides of the left side of the top of the base are fixedly connected with support blocks, and the top of the support block is fixedly connected with an elastic clamp.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The robot arm that is easy to replace the end clamp, when the end clamp of the robot arm needs to be replaced, the original end clamp of the robot arm is removed, and then the robot arm to be replaced is placed between the opposite sides of the two clamps, the rotating rod is rotated so that the two clamps clamp the clamp to be replaced, and then the robot arm is moved to the lowest position, and then the electric telescopic rod and the robot arm are controlled to align the installation position of the end clamp of the robot arm with the clamp to be replaced, and then the clamp to be replaced can be connected to the end of the robot arm with bolts, and the clamp replacement can be completed without the need By manually lifting the fixture that needs to be replaced, the fixture at the end of the robot arm can be easily replaced, which saves time and effort, improves the replacement efficiency of the fixture at the end of the robot arm, and avoids the existing problem that most of the fixtures at the end of the robot arm need to be lifted into place by hand, and then the fixture is connected to the robot arm with multiple bolts. Since the robot arm fixture is made of metal and is heavy, it is more laborious to lift and replace the robot arm fixture, and it is not convenient to keep the robot arm fixture stable, and it is not convenient to use bolts to connect the fixture to the robot arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structural diagram of the mechanical arm of the utility model which is convenient for replacing the end fixture;

[0018] Figure 2 It is a three-dimensional connection schematic diagram of the lifting mechanism in the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional connection between the tray and the rotating rod in the utility model;

[0020] Figure 4 It is a three-dimensional exploded schematic diagram of the insert block and the fixing block in the utility model;

[0021] Figure 5 It is a schematic diagram of the three-dimensional connection between the support block and the elastic clamp in the utility model.

[0022] In the figure, 1, base; 2, mechanical arm; 3, clamp; 4, lifting mechanism; 401, tray; 402, electric telescopic rod; 403, plug block; 5, fixing block; 6, anti-slip pad; 7, splint; 8, limit pin; 9, pull ring; 10, slide groove; 11, slider; 12, bearing; 13, rotating rod; 14, slot; 15, limit hole; 16, support block; 17, elastic clamp. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1-5 The utility model provides a technical solution: a mechanical arm that is convenient for replacing the end fixture, comprising a base 1, a mechanical arm 2 and a fixture 3, a fixing block 5 is fixedly connected to the top of the base 1, and a lifting mechanism 4 is arranged on the top of the fixing block 5;

[0026] The lifting mechanism 4 includes a tray 401 , an electric telescopic rod 402 and an insert block 403 . The bottom of the tray 401 is fixedly connected to the top of the telescopic end of the electric telescopic rod 402 , and the bottom of the electric telescopic rod 402 is fixedly connected to the top of the insert block 403 .

[0027] In this embodiment: when the clamp 3 at the end of the robot arm 2 needs to be replaced, the original clamp 3 at the end of the robot arm 2 is removed, and then the robot arm 2 to be replaced is placed between the opposite sides of the two clamps 7, the rotating rod 13 is rotated so that the two clamps 7 clamp the clamp 3 to be replaced, and then the robot arm 2 is moved to the lowest position, and then the electric telescopic rod 402 and the robot arm 2 are controlled to align the installation position of the clamp 3 at the end of the robot arm 2 with the clamp 3 to be replaced, and then the clamp 3 to be replaced can be connected to the end of the robot arm 2 with bolts, and the clamp 3 can be replaced without manual adjustment. By lifting the clamp 3 that needs to be replaced, the clamp 3 at the end of the robot arm 2 can be easily replaced, which saves time and effort, improves the replacement efficiency of the clamp 3 at the end of the robot arm 2, and avoids the existing problem that most of the clamps 3 at the end of the robot arm 2 need to be replaced. The clamp 3 needs to be lifted into place by hand, and then the clamp 3 is connected to the robot arm 2 with multiple bolts. Since the clamp 3 of the robot arm 2 is made of metal and is heavy, it is more laborious to lift and replace the clamp 3 of the robot arm 2, and it is inconvenient to keep the clamp 3 of the robot arm 2 stable, and it is inconvenient to use bolts to connect the clamp 3 to the robot arm 2.

[0028] As a technical optimization solution of the present invention, clamping plates 7 are provided on both sides of the top of the tray 401 , and anti-slip pads 6 are fixedly connected to opposite sides of the two clamping plates 7 .

[0029] In this embodiment: the anti-skid pads 6 on the surfaces of the two clamping plates 7 are in close contact with the surface of the clamp 3 to be replaced, so as to stably clamp the clamp 3 to be replaced, thereby achieving the effect of stably clamping the clamp 3.

[0030] As a technical optimization solution of the present invention, a slide groove 10 is provided inside the tray 401 , a slider 11 is slidably connected inside the slide groove 10 , and the top of the slider 11 is fixedly connected to the bottom of the left clamping plate 7 .

[0031] In this embodiment, the left clamping plate 7 is fixedly connected to the slider 11, and the slider 11 slides inside the slide groove 10, so that the left clamping plate 7 can be easily moved, thereby achieving the effect of facilitating the movement of the left clamping plate 7.

[0032] As a technical optimization solution of the utility model, a rotating rod 13 is arranged inside the slide groove 10 , the right side of the rotating rod 13 passes through the slider 11 and extends to the outside of the slider 11 , and the surface of the rotating rod 13 is connected to the internal thread of the slider 11 .

[0033] In this embodiment, the rotating rod 13 is connected to the inner thread of the slider 11 , and when the rotating rod 13 rotates, the slider 11 can be moved, thereby driving the left clamping plate 7 to move, thereby achieving the effect of conveniently driving the left clamping plate 7 to move.

[0034] As a technical optimization solution of the utility model, a bearing 12 is provided on the right side of the rotating rod 13, the surface of the rotating rod 13 is fixedly connected to the inner wall of the bearing 12, and the right side of the outer wall of the bearing 12 is fixedly connected to the left side of the inner wall of the slide groove 10.

[0035] In this embodiment, the rotating rod 13 is fixedly connected to the inner wall of the bearing 12, so that the rotating rod 13 can be easily rotated, thereby achieving the effect of facilitating the rotation of the rotating rod 13.

[0036] As a technical optimization solution of the utility model, a slot 14 is provided inside the fixing block 5 , and the insert block 403 is movably inserted into the slot 14 , and a pull ring 9 is fixedly connected to the front side of the insert block 403 .

[0037] In this embodiment, the electric telescopic rod 402 can be connected to the base 1 by inserting the insert block 403 into the slot 14, thereby achieving the effect of conveniently connecting the electric telescopic rod 402 to the base 1.

[0038] As a technical optimization solution of the utility model, limit pins 8 are provided on both sides of the top of the plug block 403, and limit holes 15 are opened on both sides of the top of the fixing block 5. The bottom of the limit pin 8 passes through the plug block 403 and extends to the inside of the limit hole 15.

[0039] In this embodiment, the limiting pin 8 passes through the insert block 403 and extends to the inside of the limiting hole 15 , so that the insert block 403 and the electric telescopic rod 402 can be limited, thereby achieving the effect of limiting the insert block 403 .

[0040] As a technical optimization solution of the utility model, the front side and the rear side of the left side of the top of the base 1 are fixedly connected with a support block 16 , and the top of the support block 16 is fixedly connected with an elastic clamp 17 .

[0041] In this embodiment: by pulling the plug block 403 out of the slot 14 and then pressing the electric telescopic rod 402 horizontally into the elastic clamp 17, the elastic clamp 17 can horizontally limit the electric telescopic rod 402 to prevent the vertical electric telescopic rod 402 from affecting the movement of the robotic arm 2, thereby achieving the effect of facilitating the horizontal storage of the electric telescopic rod 402.

[0042] Working principle: First, when the end fixture 3 of the robot arm 2 needs to be replaced, the original robot arm 2 is removed, and then the robot arm 2 to be replaced is placed between the opposite sides of the two clamps 7, and then the rotating rod 13 is rotated. The rotating rod 13 is fixedly connected to the inner wall of the bearing 12 so that the rotating rod 13 can rotate. The rotating rod 13 is connected to the internal thread of the slider 11. When the rotating rod 13 rotates, the slider 11 can drive the left clamp 7 to move, so that the anti-slip pads 6 on the surfaces of the two clamps 7 are in close contact with the surface of the fixture 3 to be replaced. The fixture 3 that needs to be replaced is stably clamped, and then the robot arm 2 is moved to the lowest position, and then the telescopic end of the electric telescopic rod 402 is controlled to move upward to the top of the tray 401, close to the installation position of the fixture 3 at the end of the robot arm 2. At this time, the tray 401 can stably lift the fixture 3 that needs to be replaced, and then the robot arm 2 is controlled to move to align the installation position of the fixture 3 at the end of the robot arm 2 with the fixture 3 that needs to be replaced. Then, the fixture 3 that needs to be replaced can be connected to the end of the robot arm 2 with bolts, and the fixture 3 can be replaced. After the replacement is completed, there is no need to manually lift the clamp 3 that needs to be replaced, and the clamp 3 at the end of the robot arm 2 can be conveniently replaced, which saves time and effort, improves the replacement efficiency of the clamp 3 at the end of the robot arm 2, and avoids the need to hold the clamp 3 in place when replacing the clamp 3 at the end of the robot arm 2, and then use multiple bolts to connect the clamp 3 to the robot arm 2. Since the clamp 3 of the robot arm 2 is made of metal and is heavy, it is more laborious to lift and replace the clamp 3 of the robot arm 2, and it is inconvenient to maintain The stability of the clamp 3 of the robotic arm 2 and the inconvenience of using bolts to connect the clamp 3 to the robotic arm 2 can be solved. After the clamp 3 at the end of the robotic arm 2 is replaced, the limit button is pulled upward out of the limit hole 15, and then the pull ring 9 is held to pull the plug 403 out of the slot 14, so that the electric telescopic rod 402 can be disconnected from the base 1, and then the electric telescopic rod 402 can be pressed horizontally into the elastic clamp 17, and the elastic clamp 17 can limit the electric telescopic rod 402 horizontally to prevent the vertical electric telescopic rod 402 from affecting the movement of the robotic arm 2.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical arm for facilitating replacement of an end fixture, comprising a base (1), a mechanical arm (2) and a fixture (3), characterized in that: A fixing block (5) is fixedly connected to the top of the base (1), and a lifting mechanism (4) is provided on the top of the fixing block (5); The lifting mechanism (4) comprises a tray (401), an electric telescopic rod (402) and an insert block (403); the bottom of the tray (401) is fixedly connected to the top of the telescopic end of the electric telescopic rod (402); and the bottom of the electric telescopic rod (402) is fixedly connected to the top of the insert block (403).

2. A mechanical arm for facilitating replacement of end fixtures according to claim 1, characterized in that: Clamps (7) are provided on both sides of the top of the tray (401), and anti-slip pads (6) are fixedly connected to opposite sides of the two clamps (7).

3. A mechanical arm for facilitating replacement of end fixtures according to claim 2, characterized in that: A slide groove (10) is provided inside the tray (401), and a slider (11) is slidably connected inside the slide groove (10), and the top of the slider (11) is fixedly connected to the bottom of the left clamping plate (7).

4. A mechanical arm for facilitating replacement of end fixtures according to claim 3, characterized in that: A rotating rod (13) is arranged inside the slide groove (10), the right side of the rotating rod (13) passes through the slider (11) and extends to the outside of the slider (11), and the surface of the rotating rod (13) is connected to the internal thread of the slider (11).

5. A mechanical arm for facilitating replacement of end fixtures according to claim 4, characterized in that: A bearing (12) is provided on the right side of the rotating rod (13), the surface of the rotating rod (13) is fixedly connected to the inner wall of the bearing (12), and the right side of the outer wall of the bearing (12) is fixedly connected to the left side of the inner wall of the slide groove (10).

6. The mechanical arm for facilitating replacement of end fixtures according to claim 1, characterized in that: The fixing block (5) is provided with a slot (14) inside, the insert block (403) is movably inserted into the slot (14), and the front side of the insert block (403) is fixedly connected with a pull ring (9).

7. The mechanical arm for facilitating replacement of end fixtures according to claim 1, characterized in that: Limiting pins (8) are provided on both sides of the top of the insert block (403), limiting holes (15) are provided on both sides of the top of the fixing block (5), and the bottom of the limiting pin (8) passes through the insert block (403) and extends to the inside of the limiting hole (15).

8. The mechanical arm for facilitating replacement of end fixtures according to claim 1, characterized in that: The front side and the rear side of the left side of the top of the base (1) are both fixedly connected with a support block (16), and the top of the support block (16) is fixedly connected with an elastic clamp (17).

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