Positioning device for mounting mechanical arm

Abstract

The utility model provides a positioning device for mounting a mechanical arm, and belongs to the field of mechanical engineering. Comprising a fixing assembly installed on a mechanical arm support; a sliding groove is formed in the sliding assembly, and a part of the fixing assembly is located in the sliding groove; the mounting hole is formed in the sliding assembly in a penetrating mode, and a limiting hole corresponding to the mounting hole is formed in the part, located in the sliding groove, of the fixing assembly; the spring assembly is sequentially arranged in the mounting hole and the limiting hole in a penetrating manner; the positioning hole is formed in the sliding assembly; and the positioning pin is mounted on the positioning hole. And through the combination of the sliding assembly and the spring assembly, the positioning pin has the self-adaptive adjusting capacity. The limiting block of the fixing assembly limits the sliding channel, the sliding assembly slides along the channel when pressed and compresses the spring assembly, and after external force is released, the spring resets to complete accurate positioning. According to the mechanism, the dependence on the machining precision is remarkably reduced, the problem of jamming or overload is avoided, and the integrated design is suitable for various industrial scenes.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of mechanical engineering, and particularly relates to a positioning device for mechanical arm installation. BACKGROUND

[0002] In the prior art robot gripper installation scheme, two positioning pins are usually designed on the gripper support, and cooperation is performed between the two positioning pins and corresponding two positioning holes on the gripper. However, this traditional positioning mode is relatively rigid in actual field application and highly depends on the machining precision of each component. In actual operation, due to the hole distance precision problem, many robots often encounter difficulties in placing the gripper, such as incorrect alignment, jamming or impact leading to robot overload and the like. Although some schemes adjust the distance through metal shims, the inherent defects of the rigid structure cannot be solved.

[0003] Therefore, there is an urgent need for a positioning mechanism with buffering capacity to reduce the dependence on precision and improve assembly flexibility. CONTENT OF THE UTILITY MODEL

[0004] The application aims to at least solve one of the technical problems in the prior art or related art.

[0005] To this end, the application provides a positioning device for mechanical arm installation, which provides buffering and automatic adjustment functions for the robot gripper during assembly by integrating a spring and a sliding device. This design effectively solves the problem of inaccurate positioning, avoids the phenomenon of jamming or impact caused by forced assembly, and ensures smooth and safe operation.

[0006] The positioning device for mechanical arm installation provided by the application comprises a fixed component installed on a mechanical arm support, a sliding component, a sliding groove is formed in the sliding component, a part of the fixed component is located in the sliding groove, and the outer wall of the part of the fixed component located in the sliding groove has a preset distance from the inner wall of the sliding groove, so that the sliding component can slide relative to the fixed component, an installation hole is arranged through the sliding component, a limiting hole corresponding to the installation hole is arranged on the part of the fixed component located in the sliding groove, a spring component is sequentially arranged in the installation hole and the limiting hole, the spring component provides extension tension for the sliding component, a positioning hole is arranged on the sliding component, and a positioning pin is installed on the positioning hole, the positioning pin has an assembly space with the sliding component, and the assembly space is used for installing a mechanical arm.

[0007] Compared with the prior art, the above technical solutions provided by the application at least have the following beneficial effects:

[0008] The application provides a positioning device for mechanical arm installation, comprising: a fixed component installed on a mechanical arm support; a sliding component, a sliding groove being formed on the sliding component, a part of the fixed component being located in the sliding groove; a mounting hole being provided on the sliding component; a limiting hole being provided on the part of the fixed component located in the sliding groove; a spring component being sequentially provided in the mounting hole and the limiting hole; a positioning hole being provided on the sliding component; and a positioning pin being installed on the positioning hole. Through the combination of the sliding component and the spring component, the positioning pin has self-adaptive adjustment capability. The limiting block of the fixed component limits the sliding channel, and the sliding component slides along the channel and compresses the spring component when being pressed, and the spring resets to complete accurate positioning after the external force is released. The mechanism significantly reduces the dependence on processing precision, avoids the problems of jamming or overloading, and is suitable for various industrial scenes through integrated design.

[0009] In some embodiments, the fixed component comprises: a base plate; limiting blocks symmetrically arranged on both sides of the base plate; and a spring base provided on the base plate and extending from one side of the base plate into the sliding groove.

[0010] In this scheme, the base plate provides a stable installation foundation, the symmetrically arranged limiting blocks accurately limit the sliding channel, and the sliding component is ensured to move along the preset path; the spring mounting hole of the spring base simplifies the installation and fixation of the spring component, and enhances the overall stability of the structure.

[0011] In some embodiments, a plurality of bolt holes are arranged on the base plate.

[0012] In this scheme, a plurality of bolt holes are arranged on the base plate, supporting flexible installation of the mechanism at multiple positions on different gripper supports, and expanding application scenarios.

[0013] In some embodiments, the sliding component comprises: a sliding plate, the shapes of both ends of the sliding plate being matched with the shapes of the limiting blocks; and a sliding groove being provided in the middle of the sliding plate.

[0014] A protection plate is provided on the surface of the sliding plate and covers the sliding groove.

[0015] In this scheme, the shapes of both ends of the sliding plate are matched with the shapes of the limiting blocks, ensuring sliding accuracy; the protection plate covers the surface of the sliding plate, preventing the spring base from loosening and falling off due to vibration or external force, improving the safety of the mechanism and reducing maintenance requirements.

[0016] In some embodiments, a lubricating coating is provided between the limiting blocks and the sliding plate.

[0017] In this scheme, by adding a lubricating coating between the limiting blocks and the sliding plate, the frictional resistance of the sliding contact surface is significantly reduced, and the sliding component moves more smoothly during positioning.

[0018] In some embodiments, the protection plate comprises: an inner plate arranged on the side close to the sliding groove; and an outer plate arranged on the side away from the sliding groove.

[0019] In this scheme, the layered design of the inner plate and the outer plate not only ensures the fixing effect on the elastic base, but also provides additional protection through the outer plate to prolong the service life of the mechanism.

[0020] In some embodiments, the thickness of the inner plate is less than the thickness of the outer plate.

[0021] In this scheme, the thinner inner plate reduces the weight of the sliding assembly and reduces the motion inertia, while the outer plate maintains sufficient strength to resist external impact, balancing the lightweight and durability requirements.

[0022] In some embodiments, the spring assembly comprises: a spring body, one end of the spring body is installed in the limiting hole; and a tightness adjuster, one end of the tightness adjuster is connected with the sliding plate, and the other end is connected with the spring body.

[0023] In this scheme, the spring tightness adjustment port adjusts the pre-tightening force of the spring body to adapt to the buffering requirements under different working conditions, enhances the applicability of the mechanism and simplifies the maintenance operation.

[0024] In some embodiments, the tightness adjuster is provided with a tightness adjustment scale.

[0025] In this scheme, the scale provided on the tightness adjuster quantitatively displays the adjustment amount of the spring pre-tightening force, so that the operator can accurately and intuitively adjust the spring tension.

[0026] In some embodiments, the mechanism further comprises: a preliminary positioning member arranged on the surface of the sliding plate.

[0027] In this scheme, the preliminary positioning member provides a preliminary alignment function, reduces the initial positioning error of the robot gripper, shortens the time required for precise cooperation, and improves the assembly efficiency.

[0028] Additional aspects and advantages of the present application will become apparent from the following description section, or can be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of embodiments, combined with the accompanying drawings, in which:

[0030] Fig. 1 is an assembly schematic diagram of a positioning device for mechanical arm installation according to some embodiments of the present application;

[0031] Fig. 2is an exploded schematic view of a positioning device for mechanical arm installation according to some embodiments of the present application;

[0032] Reference signs:

[0033] 100, fixing assembly; 110, base plate; 120, limiting block; 130, elastic base;

[0034] 200, sliding assembly; 210, sliding groove; 220, sliding plate; 230, protection plate; 231, inner plate; 232, outer plate;

[0035] 300, mounting hole;

[0036] 400, spring assembly; 410, spring body; 420, tightness adjuster;

[0037] 500, positioning hole;

[0038] 600, positioning pin;

[0039] 700, preliminary positioning member; DETAILED DESCRIPTION

[0040] In order to enable a more complete understanding of the above-mentioned objects, features and advantages of the present application, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and therefore the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0042] The following refers to Figs. 1-2 a positioning device for mechanical arm installation according to some embodiments of the present application.

[0043] As Fig. 1 and Fig. 2 shown, the positioning device for mechanical arm installation according to some embodiments of the present application,

[0044] The application provides a positioning device for a mechanical arm installation, comprising: a fixed assembly 100 installed on a mechanical arm support; a sliding assembly 200, a sliding groove 210 being formed on the sliding assembly 200, a part of the fixed assembly 100 being located in the sliding groove 210, and an outer wall of the part of the fixed assembly 100 located in the sliding groove 210 having a preset distance from an inner wall of the sliding groove 210, so that the sliding assembly 200 can slide relative to the fixed assembly 100; a mounting hole 300 being provided through the sliding assembly 200, the part of the fixed assembly 100 located in the sliding groove 210 being provided with a limiting hole corresponding to the mounting hole 300; a spring assembly 400 being sequentially provided through the mounting hole 300 and the limiting hole, the spring assembly 400 providing an extension and contraction tension for the sliding assembly 200; a positioning hole 500 being provided on the sliding assembly 200; and a positioning pin 600 being installed on the positioning hole 500, the positioning pin 600 having an assembly space with the sliding assembly 200, and the assembly space being used for installing the mechanical arm.

[0045] In the embodiment, the fixed assembly 100 comprises a base plate 110 and symmetrically arranged limiting blocks 120. The base plate 110 can be casted by high-strength aluminum alloy, and is fixed on the mechanical arm support through bolt holes to ensure the installation stability. The limiting blocks 120 can be fixed on both sides of the base plate 110 by bolts or welding to form a sliding channel, and both ends of a sliding plate 220 of the sliding assembly 200 are embedded in the channel to accurately guide the sliding path. The elastic base 130 is a square steel structure, is vertically welded to the middle part of the base plate 110, and has a limiting hole formed at the top thereof and used for fixing a spring body 410. The sliding groove 210 of the sliding assembly 200 has a width greater than the diameter of the elastic base 130, so that the sliding plate 220 can be horizontally adjusted slightly under pressure. One end of the spring assembly 400 is inserted into the limiting hole of the elastic base 130 through a spring, and the other end is connected with the sliding plate 220 through a tension adjuster 420. The positioning pin 600 is conically designed, is installed in the positioning hole 500 of the sliding plate 220, and is self-centered matched with the mounting hole 300 of the mechanical arm through a conical surface.

[0046] In some embodiments that can be implemented, the fixed assembly 100 comprises: a base plate 110; limiting blocks 120 symmetrically arranged on both sides of the base plate 110; and an elastic base 130 arranged on the base plate 110 and extending from one side of the base plate 110 into the sliding groove 210; and the elastic base 130 is provided with a limiting hole.

[0047] In the embodiment, the base plate 110 provides a stable installation basis, the symmetrically arranged limiting blocks 120 accurately limit the sliding channel, and the elastic base 130 is provided with the spring mounting hole 300 to simplify the installation and fixation of the spring assembly 400 and enhance the overall stability of the structure.

[0048] In some embodiments, a plurality of bolt holes are arranged on the substrate 110.

[0049] In this embodiment, a plurality of bolt holes are arranged on the substrate 110, and the support mechanism is flexibly installed at multiple positions on different gripper supports, thereby expanding the application scenarios. For example, the substrate 110 is connected to different types of mechanical arm supports through the plurality of bolt holes. During installation, an operator selects the corresponding bolt holes according to the support hole positions and fixes the substrate 110 using bolts. For example, on a light support, four hole positions at the edges of the substrate are diagonally fixed, and on a heavy support, all six hole positions are used to enhance stability. The reinforcing rib structure of the substrate 110 disperses stress when the mechanical arm is loaded, preventing deformation of the substrate. After installation is complete, the sliding channel of the sliding assembly 200 remains perpendicular to the substrate 110, ensuring that the movement trajectory of the sliding plate 220 is not affected by the installation position.

[0050] In some embodiments, the sliding assembly 200 includes a sliding plate 220, the shapes of both ends of the sliding plate 220 matching the shapes of the limiting blocks 120; and a sliding groove 210 arranged in the middle of the sliding plate 220.

[0051] A protective plate 230 is arranged on the surface of the sliding plate 220 and covers the sliding groove 210.

[0052] In this embodiment, the shapes of both ends of the sliding plate 220 match the shapes of the limiting blocks 120, ensuring sliding accuracy; and the protective plate 230 covers the surface of the sliding plate 220, preventing the elastic base 130 from loosening and falling off due to vibration or external force, thereby improving the safety of the mechanism and reducing maintenance requirements.

[0053] In some embodiments, a lubricating coating is arranged between the limiting blocks 120 and the sliding plate 220.

[0054] In this embodiment, by adding a lubricating coating between the limiting blocks 120 and the sliding plate 220, the response speed of the sliding assembly 200 can be improved, and the sliding assembly 200 can move more smoothly during positioning. For example, a thick polytetrafluoroethylene coating is sprayed on the contact surface of the limiting blocks 120 and the sliding plate 220. This coating can reduce the friction coefficient and thus reduce the sliding resistance, while also having high-temperature resistance and corrosion resistance. This improvement not only reduces energy loss and component wear caused by friction, but also improves the overall response speed and positioning accuracy of the device. The introduction of the lubricating coating effectively avoids the common sticking phenomenon in traditional rigid contact, especially in frequently used scenarios, which can significantly extend the service life of the limiting blocks and the sliding plate and reduce maintenance costs. In addition, the lubricating coating can also suppress friction noise and improve the quietness of equipment operation, making it suitable for industrial environments sensitive to noise.

[0055] In some embodiments, the protection plate 230 includes an inner plate 231 arranged on one side close to the sliding groove 210 and an outer plate 232 arranged on the other side away from the sliding groove 210.

[0056] In this embodiment, the inner plate 231 and the outer plate 232 are square-shaped metal plates that are overlapped together to cover the sliding groove 210. The layered design of the inner plate 231 and the outer plate 232 not only ensures the fixation of the elastic base 130 but also provides additional protection through the outer plate 232 to prolong the service life of the mechanism.

[0057] In some embodiments, the thickness of the inner plate 231 is less than that of the outer plate 232.

[0058] In this embodiment, the thinner inner plate 231 reduces the weight of the sliding assembly 200 and the motion inertia, while the outer plate 232 maintains sufficient strength to resist external impact, balancing the lightweight and durability requirements.

[0059] In some embodiments, the spring assembly 400 includes a spring body 410 installed at one end in the limiting hole and a tension adjuster 420 connected at one end to the sliding plate 220 and at the other end to the spring body 410.

[0060] In this embodiment, the tension adjuster 420 adjusts the pre-tightening force of the spring body 410 to adapt to the buffering requirements under different working conditions, enhancing the applicability of the mechanism and simplifying the maintenance operation. The spring body 410 can adopt a disc spring set to expand the pre-tightening force adjustment range.

[0061] In some embodiments, the tension adjuster 420 is provided with a tension adjustment scale.

[0062] In this embodiment, the scale disc provided on the tension adjuster 420 quantitatively displays the adjustment amount of the spring pre-tightening force, enabling the operator to accurately and intuitively adjust the spring tension. For example, the tension adjuster 420 can be a threaded adjusting screw with a scale disc connected at the end, corresponding to a pre-tightening force change of 50 N per rotation. The scale disc surface is laser engraved with 0-360° scale lines, and marked with "light load", "medium load" and "heavy load" three preset positions, and the operator can quickly switch to the target position. This design solves the error problem caused by relying on experience or tools in the traditional adjustment method, ensuring the consistency of the spring assembly 400 buffering effect under different working conditions. The scale disc not only improves the repeatability and reliability of the adjustment, but also simplifies the maintenance process and shortens the debugging time. For example, in the scene where the load needs to be frequently switched or adapted to different grippers, the user can quickly adjust the spring to the preset value according to the scale, significantly improving the adaptability and operation efficiency of the device. In addition, the introduction of the scale disc reduces the risk of human error, further enhancing the stability and safety of the positioning device.

[0063] In some embodiments that can be implemented, the mechanism further comprises: a preliminary positioning member 700 provided on the surface of the sliding plate 220.

[0064] In this embodiment, the coarse positioning member provides a preliminary positioning function, reduces the initial positioning error of the robot gripper, shortens the time required for accurate cooperation, and improves the assembly efficiency. For example, the preliminary positioning member 700 can be a magnetic material protrusion with a magnet embedded at the top. When the mechanical arm approaches, the magnet is attracted to the metal surface of the workpiece, achieving rapid coarse positioning and reducing the positioning error. The bottom of the protrusion can be provided with a buffer rubber pad to avoid damage to the surface of the workpiece caused by magnetic impact.

[0065] In this application, it should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting this application.

[0066] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", should be construed broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium. The term "a plurality of" refers to two or more, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood in specific circumstances.

[0068] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0069] In the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like, means 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning device for a robotic arm installation, characterized by, The utility model relates to a mechanical arm fixing device, including: A fixed component is installed on a mechanical arm support; A sliding component is provided with a sliding groove, and a part of the fixed component is located in the sliding groove; the outer wall of the fixed component in the sliding groove has a preset distance from the inner wall of the sliding groove, so that the sliding component can slide relative to the fixed component; An installation hole is provided through the sliding component, and the fixed component in the sliding groove is provided with a limiting hole corresponding to the installation hole; A spring component is sequentially provided in the installation hole and the limiting hole, and the spring component provides extension and contraction tension for the sliding component; A positioning hole is provided on the sliding component; A positioning pin is installed on the positioning hole, and the positioning pin has an assembly space with the sliding component, which is used for installing the mechanical arm.

2. A positioning device for mounting a robotic arm according to claim 1, characterized in that, The fixed component includes: A base plate; Limiting blocks are symmetrically arranged on both sides of the base plate; An elastic base is arranged on the base plate and extends from one side of the base plate into the sliding groove; the elastic base is provided with the limiting hole.

3. A positioning device for mounting to a robotic arm according to claim 2, wherein, The base plate is provided with a plurality of bolt holes.

4. The positioning device for a robotic arm installation of claim 2, wherein, The sliding component includes: The sliding plate is provided with the sliding groove in the middle; A protective plate is arranged on the surface of the sliding plate and covers the sliding groove.

5. A positioning device for a robotic arm installation according to claim 4, characterized in that A lubricating coating is arranged between the limiting blocks and the sliding plate.

6. A positioning device for a robotic arm installation according to claim 4, characterized in that The protective plate includes: An inner plate is arranged on one side close to the sliding groove; An outer plate is arranged on one side away from the sliding groove.

7. A positioning device for a robotic arm installation according to claim 6, characterized in that The thickness of the inner plate is less than that of the outer plate.

8. The positioning device for a robotic arm installation of claim 4, wherein, The spring component includes: The spring body is installed at one end of the limiting hole; The tightness adjuster is connected to the sliding plate at one end and connected to the spring body at the other end.

9. A positioning device for a robotic arm installation according to claim 8, characterized in that The tightness adjuster is provided with a tightness adjustment scale.

10. The positioning device for a robotic arm installation of claim 4, wherein The utility model further includes: A preliminary positioning member is arranged on the surface of the sliding plate.

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