Polishing equipment applicable to the inner wall of a circle

Abstract

The present invention discloses a polishing device applicable to a circular inner wall. The external fan blades are polished by the fan blades with double internal and external rotations. The internal fan blades rotate reversely to absorb heat and exhaust heat, and further adsorb and remove debris through the rotational speed difference. Through the variable first fan blades, the polishing device can be applicable to circles with various inner diameters. Through the hinged rods, the first pressure sensor and the second pressure sensor, the forces on each blade unit forming the first fan blades are consistent, and through the preset pressure value, the first fan blades can always maintain a certain pressure during the polishing process. The automatic unfolding of the first fan blades and the automatic matching of circles with different inner diameters can also be achieved through the preset pressure value. It has a simple structure, is convenient to use, has high operating efficiency, is safe, has good polishing effect, and has strong practicability and wide applicability.

Description

Technical Field

[0001] The present invention relates to a polishing device, and more particularly to a polishing device suitable for circular inner walls. Background Art

[0002] Polishing refers to a processing method that uses mechanical, chemical, or electrochemical actions to reduce the surface roughness of a workpiece to obtain a bright and flat surface; it is a finishing process that uses a polishing tool and abrasive particles or other polishing media to modify the surface of the workpiece.

[0003] Polishing cannot improve the dimensional accuracy or geometric shape accuracy of the workpiece, but aims to obtain a smooth surface or mirror gloss, and sometimes is also used to eliminate gloss (matting).

[0004] In practical applications, polishing of the exterior is relatively intuitive and visible. Usually, a polishing wheel can be directly used as the polishing tool. However, for some components with special applications, such as polishing of circular inner walls, specific tools are required. Further, for circles with different diameters, the tools need to be frequently replaced, which is troublesome to use and indirectly increases the cost. Summary of the Invention

[0005] To solve the deficiencies of the prior art, the purpose of the present invention is to provide a polishing device suitable for circular inner walls.

[0006] To achieve the above objective, the present invention adopts the following technical solutions:

[0007] A polishing device suitable for circular inner walls includes an outer sliding ring with a first fan blade group provided outside the ring and an inner sliding ring with a second fan blade group provided outside the ring;

[0008] The inner sliding ring is coaxially arranged inside the outer sliding ring, and the inner sliding ring is linked by a rotating shaft inside its ring;

[0009] A first inner ring gear is provided at the bottom of the outer sliding ring, a second outer ring gear is provided at the bottom of the inner sliding ring, and a third gear that is respectively engaged with the first inner ring gear and the second outer ring gear is provided between the outer sliding ring and the inner sliding ring; the inner sliding ring drives the outer sliding ring to rotate along the inner wall of the outer guide ring through the third gear; the outer guide ring is provided with a guide ring groove, and the first fan blade group is placed outside the outer guide ring through the guide ring groove;

[0010] The outer sliding ring is provided with a number of through air guide holes, the outer end of the air guide holes communicates with a first ring groove, and the inner end communicates with the second fan blade group;

[0011] The ends of several fan blades of the first fan blade group are wrapped with polishing materials.

[0012] A liquid storage cavity is arranged inside the ends of the fan blades of the above first fan blade group, the liquid storage cavity communicates with a liquid outlet pipe arranged inside the fan blade, and the pipe orifice of the liquid outlet pipe is arranged on the end back surface of the fan blade in contact with the circular to be polished.

[0013] Furthermore, the liquid outlet tube is a capillary tube.

[0014] Furthermore, the outlet of the liquid outlet pipe is provided with a sealing device;

[0015] The sealing device comprises a sealing cavity, in which a ball is built-in, the diameter of the ball is larger than the diameter of the cavity opening of the sealing cavity, and the other end of the ball is supported by a spring, and the other end of the spring is supported by the connection end between the sealing cavity and the liquid outlet pipe.

[0016] The blades of the first blade group are made of a tough material, including elastic steel.

[0017] The blades of the first blade group are formed by hingedly connecting a plurality of blade units in sequence through hinge rods;

[0018] The hinge rod comprises a rod body, a first rod leaf is fixedly arranged on one side of the rod body, and the first rod leaf is fixedly connected to the leaf unit on one side; an arc-shaped open groove facing the bending direction of the first fan blade is arranged on the other side of the rod body;

[0019] The rod body has a built-in micro motor, the shaft of the micro motor is fixedly connected to one end of the second rod leaf, and the other end of the second rod leaf is fixedly connected to the leaf unit on the other side through the open groove;

[0020] The micro motor is driven and powered by a control device.

[0021] Furthermore, a first pressure sensor is provided between the other end of the second rod leaf and the extrusion surface of the leaf unit on the other side.

[0022] The control device adjusts the deflection angle of the shaft of the micromotor according to the feedback from the first pressure sensor.

[0023] Furthermore, the control device adjusts the deflection angle of the axis of the micro motor in each articulated rod according to the feedback of the first pressure sensors.

[0024] Furthermore, the deflection angles of the axes of the micro motors in the above-mentioned hinged rods are equal.

[0025] Furthermore, a second pressure sensor is provided on the back side of the fan blade that contacts the circle to be polished. The control device determines the difference between the pressure feedback from the second pressure sensor and the pressure feedback from the first pressure sensor based on the feedback from the second pressure sensor, and adjusts the deflection angle of the shaft of the micromotor in the hinged rod.

[0026] The blades of the second blade group are tilted, with an inclination angle of 30-60° downwardly facing the rotation direction.

[0027] The present invention is beneficial in that:

[0028] The polishing device applicable to the inner wall of a circle according to the present invention realizes the grinding of the outer fan blades through the fan blades with double internal and external rotations. The inner fan blades rotate reversely to absorb and exhaust heat, and further adsorb and remove debris through the rotational speed difference. Through the variable first fan blades, the polishing device can be applicable to circles with various inner diameters. Through the articulated rods, the first pressure sensors and the second pressure sensors, the forces on each blade unit forming the first fan blades are made consistent, and through the preset pressure value, the first fan blades can always maintain a certain pressure during the polishing process. The automatic unfolding of the first fan blades and the automatic matching of circles with different inner diameters can also be realized through the preset pressure value.

[0029] The polishing device applicable to the inner wall of a circle according to the present invention has a simple structure, is convenient to use, has high operating efficiency, is safe, has good polishing effect, and has strong practicability and wide applicability. Brief Description of the Drawings

[0030] Figure 1 It is a schematic structural view of the outer sliding ring and the inner sliding ring of the present invention.

[0031] Figure 2 It is a schematic view of the linkage structure of the outer sliding ring and the inner sliding ring of the present invention.

[0032] Figure 3 It is a schematic structural view of the sealing device of the present invention.

[0033] Figure 4 It is a schematic structural view of the articulated rod of the present invention.

[0034] The meanings of the marks in the drawings are as follows: 1. First fan blade group, 2. Outer sliding ring, 3. Second fan blade group, 4. Inner sliding ring, 5. Third gear, 6. Liquid storage cavity, 7. Liquid outlet pipe, 8. Spring, 9. Ball, 10. Rod body, 11. First rod blade, 12. Micro motor, 13. Second rod blade, 14. First pressure sensor. Detailed Embodiment

[0035] The following specifically introduces the present invention in combination with the drawings and specific embodiments.

[0036] The polishing device applicable to the inner wall of a circle is composed of an outer sliding ring 2 and an inner sliding ring 4.

[0037] A first fan blade group 1 composed of a plurality of first fan blade groups 1 is fixedly connected to the outside of the outer sliding ring 2, and a second fan blade group 3 composed of a plurality of second fan blades is fixedly connected to the outside of the inner sliding ring 4.

[0038] The motor shaft end of the main motor is fixed inside the inner slip ring 4, and the inner slip ring 4 is rotated by the motor shaft of the main motor. The outer slip ring 2 is coaxially arranged outside the inner slip ring 4, and a coaxial outer guide ring is arranged outside the outer slip ring 2. The two ends of the outer guide ring are fixed by a base, and the outer guide ring is provided with a guide ring groove. The first fan blade group 1 is placed outside the outer guide ring through the guide ring groove; the outer wall of the outer slip ring 2 is attached to the inner wall of the outer guide ring. In addition, the bottom of the outer slip ring 2 is provided with a first inner ring tooth, and the bottom of the inner slip ring 4 is provided with a second outer ring tooth. A third gear 5 is provided between the outer slip ring 2 and the inner slip ring 4, which is respectively connected with the first inner ring tooth and the second outer ring tooth; that is, the inner slip ring 4 is linked to the outer slip ring 2 by the third gear 5 to rotate along the inner wall of the outer guide ring, and the guide ring groove provides a limit.

[0039] During rotation, the first blade group 1 and the second blade group 3 rotate in opposite directions. The polishing material wrapped in the ends of the first blades of the first blade group 1 contacts the inner wall of the circle to be polished for polishing. According to usage requirements, the polishing material can be selected from multiple layers of canvas, felt or leather, etc.

[0040] The outer sliding ring 2 is also provided with a plurality of transparent air guide holes, and the two ends of the air guide holes are respectively connected to the first ring groove and the second blade group 3. When the second blade group 3 rotates in the opposite direction relative to the first blade group 1, and the rotation speed of the second blade group 3 is greater than that of the first blade group 1, the rotating second blade group 3 can form a reverse back-suction wind inside the first blade group 1, and absorb the heat generated by the high-speed rotation of the first blade group 1 and the inner wall of the circular surface to be polished, which has a cooling effect. At the same time, the debris generated by friction during the polishing process can also be effectively adsorbed, and after passing through the air guide holes, it is discharged after being carried by the second blade group 3 with the blades tilted. The inclination angle of the plurality of second blades of the second blade group 3 is preferably set downward by 30-60° in the direction of rotation.

[0041] A liquid storage cavity 6 is provided in the end of the first blades of the first blade group 1. The liquid storage cavity 6 is connected to a liquid outlet pipe 7 provided in the blade, and the outlet of the liquid outlet pipe 7 is provided on the back side of the blade that contacts the circle to be polished.

[0042] In scheme 1, the liquid outlet pipe 7 is a capillary tube. The polishing liquid in the liquid storage chamber 6 is thrown out through the capillary tube by the first fan blade rotating at a high speed to the contact surface between the first fan blade and the circular inner wall to be polished.

[0043] In the second solution, a sealing device is provided at the outlet of the liquid outlet pipe 7. The sealing device is composed of a sealing cavity, a ball 9 and a spring 8. The ball 9 is placed in the sealing cavity, the diameter of the ball 9 is larger than the diameter of the cavity of the sealing cavity, the other end of the ball 9 is supported by the spring 8, and the other end of the spring 8 is supported by the connection end between the sealing cavity and the liquid outlet pipe 7.

[0044] When the first blade contacts the circular inner wall to be polished, the ball 9 is compressed to press the spring 8, and after moving along the sealing cavity, the cavity of the sealing cavity is no longer sealed; the first blade rotates at high speed, and the polishing liquid in the liquid storage cavity 6 is thrown out through the liquid outlet pipe 7 to the contact surface between the first blade and the circular inner wall to be polished. After polishing is completed, the ball 9 is no longer compressed, and the cavity of the sealing cavity is closed by the spring 8.

[0045] In order to facilitate the first blade set 1 to be applicable to various inner diameters of the round shapes to be polished, the first blade of the first blade set 1 can be elastically arranged.

[0046] Option three, the material of the blades of the first blade group 1 is selected to be a tough material including elastic steel, so that after the end of the first blade is compressed, the blade body of the first blade can bend and deform, thereby adapting to the changing inner diameter of the circle to be polished.

[0047] Solution 4: The blades of the first blade group 1 are formed by a plurality of blade units being hinged in sequence through hinge rods.

[0048] Among them, the hinged rod is the main component, and the hinged rod is composed of a rod body 10, a first rod blade 11, a second rod blade 13 and a micro motor 12; the first rod blade 11 is fixedly arranged on one side of the rod body 10 and is fixedly connected to the leaf unit on this side; symmetrically, on the other side of the rod body 10, there is an open groove in an arc shape facing the bending direction of the first fan blade, the rod body 10 has a built-in micro motor 12, the axis of the micro motor 12 is fixedly connected to one end of the second rod blade 13, and the other end of the second rod blade 13 is fixedly connected to the leaf unit on the other side through the open groove; the second rod blade 13 swings along the arc of the open groove with the axis of the micro motor 12.

[0049] The micro motor 12 is driven and powered by the control device. The control device controls the angle of the shaft of each micro motor 12 to control the curvature of the entire first blade, so that the first blade can match the circular shape to be polished with various inner diameters.

[0050] In order to achieve precise control and automatic operation, a first pressure sensor 14 may be provided between the other end of the second blade 13 and the extrusion surface of the leaf unit on the other side, and the control device adjusts the deflection angle of the shaft of the micro motor 12 according to the feedback of the first pressure sensor 14. A second pressure sensor is provided on the back side of the end of the first blade that contacts the circle to be polished, and the control device determines the difference between the pressure feedback from the first pressure sensor 14 and the pressure feedback from the second pressure sensor, and adjusts the deflection angle of the shaft of the micro motor 12 in the hinged rod.

[0051] Even make the pressures fed back by a number of first pressure sensors 14 and the pressure fed back by the second pressure sensor consistent, so that the forces on each blade unit are consistent. During use, the working pressure of the second pressure sensor can be preset. Through the preset working pressure, by adjusting the pressures of the first pressure sensors 14, the deflection angle and deflection force of the shaft of the micro motor 12 are further adjusted, thereby realizing the bending radian of the entire first fan blade, and further realizing that the entire first fan blade can be applicable to circular shapes to be polished with various inner diameters.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

Claims

1. A polishing device applicable to the inner wall of a circle, characterized in that, It comprises an outer sliding ring with a first blade group outside the ring and an inner sliding ring with a second blade group outside the ring; The inner slip ring is coaxially arranged inside the outer slip ring, and the inner slip ring is linked by a rotating shaft inside the ring; The outer sliding ring is provided with a first inner ring tooth at the bottom, the inner sliding ring is provided with a second outer ring tooth at the bottom, and a third gear is provided between the outer sliding ring and the inner sliding ring, which is respectively connected with the first inner ring tooth and the second outer ring tooth; the inner sliding ring is linked with the outer sliding ring by the third gear to rotate along the inner wall of the outer guide ring; the outer guide ring is provided with a guide ring groove, and the first fan blade group is placed outside the outer guide ring through the guide ring groove; The outer sliding ring is provided with a plurality of transparent air guide holes, the outer ends of the air guide holes are connected to the first ring groove, and the inner ends of the air guide holes are connected to the second fan blade group; Ends of the plurality of blades of the first blade group are wrapped with polishing material.

2. The polishing apparatus according to claim 1, wherein A liquid storage cavity is arranged in the end of the blade of the first blade group, the liquid storage cavity is connected to a liquid outlet pipe arranged in the blade, and the pipe mouth of the liquid outlet pipe is arranged on the back side of the end of the blade that contacts the circle to be polished.

3. The polishing device according to claim 2, characterized in that, The liquid outlet tube is a capillary tube.

4. The polishing device according to claim 2, wherein The pipe opening of the liquid outlet pipe is provided with a sealing device; The sealing device comprises a sealing cavity, in which a ball is built-in, the diameter of the ball is larger than the diameter of the cavity opening of the sealing cavity, and the other end of the ball is supported by a spring, and the other end of the spring is supported by the connection end between the sealing cavity and the liquid outlet pipe.

5. The polishing apparatus according to claim 1, characterized in that The blades of the first blade group are made of a tough material, including elastic steel.

6. The polishing device according to claim 1, wherein, The blades of the first blade group are formed by a plurality of blade units being hinged in sequence through hinge rods; The hinge rod comprises a rod body, a first rod leaf is fixedly arranged on one side of the rod body, and the first rod leaf is fixedly connected to the leaf unit on one side; an arc-shaped open groove facing the bending direction of the first fan blade is arranged on the other side of the rod body; The rod body has a built-in micro motor, the shaft of the micro motor is fixedly connected to one end of the second rod leaf, and the other end of the second rod leaf is fixedly connected to the leaf unit on the other side through the open groove; The micro motor is driven and powered by a control device.

7. The polishing apparatus according to claim 6, wherein A first pressure sensor is provided between the other end of the second rod leaf and the pressing surface of the leaf unit on the other side. The control device adjusts the deflection angle of the shaft of the micromotor according to the feedback from the first pressure sensor.

8. The polishing apparatus according to claim 7, wherein The control device adjusts the deflection angle of the shaft of the micro motor in each articulated rod according to the feedback of a plurality of first pressure sensors.

9. The polishing apparatus according to claim 8, wherein The deflection angles of the axes of the micro motors in the articulated rods are equal.

10. The polishing apparatus according to claim 7, wherein A second pressure sensor is provided on the back side of the fan blade that contacts the circle to be polished. The control device determines the difference between the pressure feedback from the second pressure sensor and the pressure feedback from the first pressure sensor based on the feedback from the second pressure sensor, and adjusts the deflection angle of the shaft of the micro motor in the hinged rod.

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