A belt grinding tool for a robot

Abstract

The present invention discloses a sanding tool for a robot, which includes a sanding tool body composed of a sanding belt, a driving wheel, a driven wheel and a support base. The driving wheel and the driven wheel are both installed on the support base and are respectively located at both ends of the support base; a support member is respectively provided on the support base near the driving wheel and the driven wheel. In the present invention, support members are installed at positions on the support base near the driving wheel and the driven wheel, so that during the use of the sanding tool, both the driving end and the driven end of the sanding belt are supported by the support members, ensuring that both the driving wheel and the driven wheel can provide sufficient downward pressure during the use of the sanding tool.

Description

Technical Field

[0001] The present invention relates to a grinding tool, and particularly to a sand belt grinding tool for a robot. Background Art

[0002] When grinding products, for products with relatively high requirements for surface roughness quality, a sand belt grinding tool is usually used for grinding by manual grinding. Since different specifications, models or different grit sand belt grinding tools may need to be replaced according to different product requirements during the grinding process, and manual grinding and tool replacement are affected by operation skills, there are usually problems of slow grinding speed and low efficiency. To solve this problem, using a robot to replace manual labor is a feasible way, which can effectively improve the grinding efficiency.

[0003] However, the current grinding tool connected to the robot has a single-point support structure. Usually, the grinding force control is only implemented from one end of the driven wheel, and the driving wheel end is a suspended structure and cannot apply grinding force, which reduces the grinding efficiency and even affects the grinding quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a sand belt grinding tool for a robot in which both the driving wheel and the driven wheel at both ends of the sand belt are provided with grinding force support members, aiming at the problem of low grinding efficiency caused by only one end of the driven wheel being equipped with a force control device in the sand belt grinding tool for a robot in the prior art.

[0005] In order to achieve the above invention purpose, the present invention provides the following technical solutions:

[0006] A sand belt grinding tool for a robot includes a sand belt grinding tool main body composed of a sand belt, a driving wheel, a driven wheel and a support seat. The driving wheel and the driven wheel are both installed on the support seat and are respectively located at both ends of the support seat; a support member is respectively provided on the support seat near the driving wheel and the driven wheel.

[0007] In the present invention adopting the above technical solution, the driving wheel and the driven wheel are located at both ends of the sand belt, and the driving wheel and the driven wheel are installed on the support seat. Support members are installed at positions on the support seat near the driving wheel and the driven wheel, so that both the driving end and the driven end of the sand belt are provided with support force by the support members during the use of the grinding tool, ensuring that sufficient downward pressure can be provided at both the driving wheel and the driven wheel during the use of the sand belt grinding tool. This grinding tool is connected to the robot, improving the efficiency and quality of robot automatic grinding.

[0008] Further, it further includes a mounting bracket; the free end of the support member is connected to the mounting bracket, and a clamping member is also provided on the mounting bracket. The clamping member is located on the back of the mounting bracket opposite to the main body of the belt grinding tool, and the clamping member is located at the middle position between the two support members. The clamping member is used to connect to the robot arm, so that the grinding force applied by the robot is transmitted to the two abrasive belt wheels through the two support members basically evenly, further improving the grinding efficiency and grinding quality.

[0009] Further, mounting lugs protrude from both sides of the middle part of the mounting bracket towards the main body of the belt grinding tool; the support seat is in the shape of a concave channel steel, and the support seat is connected to the mounting bracket through the middle parts of the two side walls of the channel steel and the mounting lugs on the mounting bracket; the support member is of a telescopic structure, and the support member is hinged to the support seat. During the process of the support member being pushed out or retracted, the support seat will be driven to rotate, so that the position of the abrasive belt rises, falls or rotates, that is, the abrasive belt can be adjusted to various angular states parallel or inclined relative to the horizontal position; the middle part of the support seat is hinged to the mounting lug, so that while both ends of the support seat are connected to the support member, there is an additional connection point in the middle, making the force on the support seat more balanced and enhancing the structural stability of the support member. Among them, the telescopic structure includes a screw-nut adjustment structure, and a power cylinder or a cylinder with its own power, etc.

[0010] Further, the support member includes a cylinder, and the cylinder body of the cylinder is fixedly connected to the mounting bracket; a hinge seat is fixedly connected to the support seat, and the hinge seat is hinged to the piston rod of the cylinder. The two cylinders can drive the support seat to rise, fall or rotate through the hinge seat, and further the position of the abrasive belt can be changed synchronously. By using a self-driven member with a simple structure and mature technology, the attitude adjustment of the main body of the belt grinding tool is realized, the structure is simplified, and the cost is reduced.

[0011] Further, the driving wheel is fixedly connected to the driving shaft, and the driven wheel is arranged on the driven shaft; both the driving shaft and the driven shaft are arranged through the two side walls of the channel steel of the support seat, and the driving shaft is rotatably arranged on the support seat. To form a structure convenient for disassembly and assembly and improve the maintainability; among them, the driving wheel is connected with a driving device, and the driving device transmits the rotation to the driving wheel through the driving shaft, so the driving wheel and the driving shaft cannot rotate relative to each other. During belt grinding, the driving wheel and the driving shaft will rotate synchronously.

[0012] Further, the driving shaft is driven to rotate by a motor; the motor is arranged on the support seat. To form a simple grinding power transmission structure.

[0013] Furthermore, an angle-iron-shaped motor base is provided on the support base. One side of the angle iron of the motor base is placed on the outer end face of the bottom of the channel steel of the support base, and is fixedly connected to the support base through this overlapping side. The other side of the angle iron of the motor base abuts against the corresponding side wall of the channel steel; the motor is fixedly connected to the corresponding side of the angle iron of the motor base that abuts against the side wall. The motor base is in the shape of an angle iron, with a simple structure and convenient processing. At the same time, both sides of the motor base are overlapped on the outer end face of the support base, so that both sides of the motor base can be locked on the support base, enhancing the stability of the motor position.

[0014] Furthermore, the driven wheel is rotatably arranged on the driven shaft. So that the driven wheel is installed on the driven shaft through a bearing, which is beneficial to extending the service life; among them, the driven shaft can be fixed or rotatably arranged on the support base.

[0015] Furthermore, the support base is hinged to the mounting bracket through the same hinge shaft that supports the two side walls of the channel steel; a support wheel for supporting the sand belt is provided on the hinge shaft. In this way, there are a driving wheel and a driven wheel at both ends of the sand belt respectively, and a support wheel in the middle, so that the sand belt has more bearing parts during grinding, and the grinding efficiency is higher.

[0016] Furthermore, an air inlet interface and an air outlet interface are circumferentially connected to the clamping member; a protrusion is formed on one side surface of the mounting bracket where the clamping member is arranged, and two positioning holes are opened on the protrusion. The clamping member is used to facilitate the manipulator to pick up and use the entire sand belt grinding tool for the robot. The air inlet interface and the air outlet interface are communicated with the air passage of the cylinder, so that the cylinder can be used normally; the positioning holes can be used for positioning between the clamping member and the robot arm, and can also be used for tool storage positioning during tool replacement.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The driving wheel and the driven wheel are located at both ends of the sand belt, and the driving wheel and the driven wheel are installed on the support base. Support members are installed at positions on the support base close to the driving wheel and the driven wheel, so that during the use of the grinding tool, support forces are provided by the support members at both the driving end and the driven end of the sand belt, ensuring that sufficient downward pressure can be provided at both the driving wheel and the driven wheel during the use of the sand belt grinding tool. This grinding tool is connected to the robot, improving the efficiency and quality of robot automated grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specification drawings forming a part of this application are used to provide a further understanding of the invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 The structural schematic diagram of the present invention is shown.

[0020] Figure 2 The partial structural schematic diagram of the present invention is shown.

[0021] Figure 3 It shows a schematic structural diagram of the abrasive belt grinding tool body and the mounting bracket in an inclined state in the present invention.

[0022] Figure 4 It shows Figure 1 a top view of

[0023] Figure 5 It shows Figure 1 a side view of

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 1 abrasive belt;

[0026] 2 driving wheel; 21 driving shaft;

[0027] 3 driven wheel; 31 driven shaft;

[0028] 4 support member; 41 cylinder; 42 hinge seat;

[0029] 5 mounting bracket; 51 positioning hole;

[0030] 6 support wheel; 61 hinge shaft;

[0031] 7 motor; 71 motor base;

[0032] 8 clamping member; 81 air inlet interface; 82 air outlet interface;

[0033] 9 support base. Detailed implementation manners

[0034] It should be noted that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0035] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0036] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] Such as Figures 1 to 3 , a belt grinding tool for a robot, including a belt grinding tool body composed of a belt 1, a driving wheel 2, a driven wheel 3 and a support seat 9. The driving wheel 2 and the driven wheel 3 are both installed on the support seat 9 and are respectively located at both ends of the support seat 9; preferably, a support member 4 is provided on the support seat 9 near the driving wheel 2 and the driven wheel 3 respectively.

[0038] Preferably, it further includes a mounting bracket 5; the free end of the support member 4 is connected to the mounting bracket 5, and a clamping member 8 is further provided on the mounting bracket 5. The clamping member 8 is located on the back of the mounting bracket 5 opposite to the belt grinding tool body, and the clamping member 8 is located at the middle position between the two support members 4.

[0039] Preferably, the mounting bracket 5 protrudes from the middle of both sides towards the belt grinding tool body to form mounting lugs; the support seat 9 is in the shape of a concave channel steel, and the support seat 9 is connected to the mounting bracket 5 through the middle parts of the two side walls of the channel steel and the mounting lugs on the mounting bracket 5; the support member 4 is of a telescopic structure, and the support member 4 is hinged to the support seat 9.

[0040] Preferably, the support member 4 includes a cylinder 41, and the cylinder body of the cylinder 41 is fixedly connected to the mounting bracket 5; a hinge seat 42 is fixedly connected to the support seat 9, and the hinge seat 42 is hinged to the piston rod of the cylinder 41.

[0041] Preferably, the driving wheel 2 is fixedly connected to a driving shaft 21, and the driven wheel 3 is arranged on a driven shaft 31; both the driving shaft 21 and the driven shaft 31 are arranged through the two side walls of the channel steel of the support seat 9, and the driving shaft 21 is rotatably arranged on the support seat 9.

[0042] Preferably, the driving shaft 21 is driven to rotate by a motor 7; the motor 7 is arranged on the support seat 9.

[0043] Preferably, an angle-shaped motor base 71 is provided on the support base 9. One side of the angle of the motor base 71 is placed on the outer end surface of the bottom of the channel steel of the support base 9, and is fixedly connected to the support base 9 through this overlapping side. The other side of the angle of the motor base 71 abuts against the corresponding side wall of the channel steel; the motor 7 is fixedly connected to the corresponding side of the angle of the motor base 71 that abuts against the side wall.

[0044] Preferably, the driven wheel 3 is rotatably arranged on the driven shaft 31.

[0045] Preferably, the support base 9 is hinged to the mounting bracket 5 through the same hinge shaft 61 supported on both side walls of the channel steel; a support wheel 6 for supporting the abrasive belt 1 is provided on the hinge shaft 61.

[0046] As Figure 4 , a top view of the abrasive belt grinding tool is shown. Preferably, an air inlet interface 81 and an air outlet interface 82 are circumferentially connected to the clamping member 8; a protrusion is formed on one side surface of the mounting bracket 5 where the clamping member 8 is arranged, and two positioning holes 51 are opened on the protrusion.

[0047] As Figure 5 is a left view of the abrasive belt grinding tool. The mounting bracket 5 includes an upper mounting cross plate and two protruding mounting lugs symmetrically placed. The mounting lugs are both inverted triangles and are symmetric about themselves. The hinge shaft 61 passes through and connects the two mounting lugs; the support base 9 is connected to the two mounting lugs through the hinge shaft 61 at the same time; the motor base 71 is mounted on the support base 9 to position the motor 7, and the motor base 71 is in the shape of an angle steel (L-shaped). One plane is fixedly connected to the motor 7, and the other perpendicular plane is connected to the support base 9 and is provided with a clearance groove, and the clearance groove provides a position for the hinge seat 42 to be directly mounted on the support base 9; alternatively, the two L-shaped planes of the motor base 71 are both fixed to the support base 9. The support base 9 is in the shape of a concave channel steel, and the opening faces the driving shaft 21 and the driven shaft 31; the driving shaft 21, the driven shaft 31, and the hinge shaft 61 all pass through and are connected to both side walls of the support base 9; while the driving wheel 2, the driven wheel 3, and the support wheel 6 are all located in the groove of the channel steel, that is, the thicknesses of the three wheels are all smaller than the width of the channel steel.

[0048] In this embodiment, since the motor 7 drives the driving shaft 21 to rotate, and the driving shaft 21 drives the driving wheel 2 to rotate together, therefore, the motor 7, the driving shaft 21, and the driving wheel 2 cannot generate relative rotation.

[0049] During specific use, the telescopic lengths of the two cylinders 41 can be adjusted according to the grinding requirements. The positions of the driving wheel 2 and the driven wheel 3 are further adjusted through the support base 9, so that the position of the abrasive belt 1 and the downward pressure during grinding are adjusted. When grinding, the section of the abrasive belt 1 close to the driven wheel 3 can be used for grinding; when grinding a large flat surface, the entire section of the abrasive belt 1 between the driven wheel 3 and the support wheel 6 can also be used for grinding to improve the grinding efficiency; in order to protect the motor 7, the section of the abrasive belt 1 on the driving wheel 2 generally does not participate in grinding.

[0050] In this embodiment, one end of the support member 4 is hinged to the support base 9, and the other end of the support member 4 is fixedly connected to the mounting bracket 5; in specific use, it is also possible to adopt the method of hinging one end of the support member 4 to the mounting bracket 5 and fixedly connecting the other end of the support member 4 to the support base 9.

[0051] In this embodiment, the motor shaft of the motor 7 and the drive shaft 21 are coaxially and fixedly connected through a coupling. During specific use, it is also possible to customize a special motor with an extended motor shaft and directly use the extended motor shaft as the drive shaft 21 without additionally providing a drive shaft 21.

[0052] In this embodiment, the driven shaft 31 can be fixedly arranged on the support base 9 or rotatably arranged on the support base 9; when rotatably arranged, it is preferably provided with a sliding bearing between the two.

[0053] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A belt grinding tool for a robot, comprising a belt grinding tool body composed of a sand belt (1), a driving wheel (2), a driven wheel (3) and a support seat (9). The driving wheel (2) and the driven wheel (3) are both installed on the support seat (9) and are respectively located at both ends of the support seat (9); characterized in that, On the support base (9), there is a support member (4) respectively near the driving wheel (2) and the driven wheel (3); an installation bracket (5) is further included; the free end of the support member (4) is connected to the installation bracket (5); on both sides of the middle part of the installation bracket (5) facing the abrasive belt grinding tool body, there are protruding installation lugs; the support base (9) is in the shape of a concave channel steel, and the support base (9) is connected to the installation bracket (5) through the middle parts of the two side walls of the channel steel and the installation lugs on the installation bracket (5); the support member (4) is of a telescopic structure, and the support member (4) is hinged to the support base (9); the support base (9) is hinged to the installation bracket (5) through the same hinge shaft (61) supported on the two side walls of the channel steel; on the hinge shaft (61), there is a support wheel (6) for supporting the abrasive belt (1); on the installation bracket (5), there is also a clamping member (8), the clamping member (8) is located on the back of the installation bracket (5) opposite to the abrasive belt grinding tool body, and the clamping member (8) is located at the middle position between the two support members (4); the clamping member (8) is circumferentially connected with an air inlet interface (81) and an air outlet interface (82); on one side surface of the installation bracket (5) where the clamping member (8) is arranged, there is a protrusion, and two positioning holes (51) are opened on the protrusion.

2. The abrasive belt grinding tool for a robot according to claim 1, wherein, The support member (4) includes a cylinder (41), and the cylinder body of the cylinder (41) is fixedly connected to the installation bracket (5); on the support base (9), there is a fixedly connected hinge seat (42), and the hinge seat (42) is hinged to the piston rod of the cylinder (41).

3. The abrasive belt grinding tool for a robot according to claim 1, wherein, The driving wheel (2) is fixedly connected to a driving shaft (21), and the driven wheel (3) is arranged on a driven shaft (31); both the driving shaft (21) and the driven shaft (31) are arranged through the two side walls of the channel steel of the support base (9), and the driving shaft (21) is rotatably arranged on the support base (9).

4. The abrasive belt grinding tool for a robot according to claim 3, wherein, The driving shaft (21) is driven to rotate by a motor (7); the motor (7) is arranged on the support base (9).

5. The abrasive belt grinding tool for a robot according to claim 4, characterized in that, On the support base (9), there is an angle steel-shaped motor seat (71), one side of the angle steel of the motor seat (71) is placed on the outer end surface of the bottom of the channel steel of the support base (9), and is fixedly connected to the support base (9) through this overlapping side, and the other side of the angle steel of the motor seat (71) abuts against the corresponding side wall of the channel steel; the motor (7) is fixedly connected to the corresponding side of the angle steel of the side wall where the motor seat (71) abuts.

6. The abrasive belt grinding tool for a robot according to claim 3, characterized in that, The driven wheel (3) is rotatably arranged on the driven shaft (31).

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