Polishing components

Abstract

The present invention relates to a polishing assembly. A polishing assembly comprises a fixed frame, a driving motor and a telescopic mechanism are fixed on the fixed frame, a driving wheel is fixed on the output end of the driving motor, the driving wheel is linked with a driven wheel, the outer shells of the driving wheel and the driven wheel are provided with a polishing belt in an enclosed shape, the telescopic mechanism comprises a fixed part, a movable part and a self-rotating part, one end of the movable part is located in the fixed part, the other end of the movable part extends outside the fixed part and is linked and fixed with the movable frame, the driven wheel can be rotatably fixed on the movable frame, the self-rotating part can rotate and be connected and fixed to the movable part or the fixed part, the rotation axis of the self-rotating part is arranged along the telescopic direction of the movable part, the movable frame drives the driven wheel to move under the action of the telescopic mechanism, and the polishing belt is tightened and fixed outside the driving wheel and the driven wheel. The present invention has the advantages of being able to improve the polishing effect and improve the polishing efficiency.

Description

Technical Field

[0001] The invention relates to a parts processing equipment, in particular to a polishing component. Background Art

[0002] A general polishing assembly includes a motor and a grinding wheel. The surface of a workpiece is polished by a rotating grinding wheel. Usually, the workpiece is first fixed on a rotating mechanism, and then the polishing assembly is moved to make the grinding wheel contact the surface of the workpiece. Then the workpiece is rotated and the motor is started to perform the polishing operation. However, the polishing efficiency of the grinding wheel is low. For this reason, some polishing assemblies are a combination of a motor and a polishing belt.

[0003] In order to ensure effective contact between the polishing belt and the workpiece surface, the polishing belt at the driven wheel will be in contact with the workpiece surface, rather than the polishing belt between the driving wheel and the driven wheel. In order to avoid contact between the driven wheel and the polishing belt, an annular groove cannot be set on the axial surface of the driven wheel to limit the movement of the polishing belt along the axial direction of the driven wheel. The outer diameter of the existing driven wheel is the same at all places, and the polishing belt is easy to move along the axial direction of the driven wheel.

[0004] Some workpieces have protrusions on their surfaces, and the side of the protrusions is an inclined surface that is inclined relative to the workpiece surface. Whether it is a grinding wheel or a polishing belt, the polishing effect on the protruding inclined surface of the workpiece is poor. A longer polishing operation is required to make the polishing effect at the inclined surface reach the specified standard, but the surface of the workpiece deviates from the inclined surface and is over-polished.

[0005] Some workpieces are welded together with multiple parts, and the welds between the two parts need to be ground and polished. However, the welds are uneven, and the contact area between the polishing belt and the welds is small. It is necessary to grind for a long time to grind the welds flat before polishing. Summary of the invention

[0006] The purpose of the invention is to provide a polishing assembly which can prevent the polishing belt from deviating and improve the polishing efficiency.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a polishing component, including a fixed frame, a driving motor and a telescopic mechanism are fixed on the fixed frame, a driving wheel is fixed on the output end of the driving motor, the driving wheel is linked with the driven wheel, the outer shells of the driving wheel and the driven wheel are provided with a polishing belt in an enclosed shape, the telescopic mechanism includes a fixed part, a movable part and a rotating part, one end of the movable part is located in the fixed part, the other end of the movable part extends to the outside of the fixed part and is linked and fixed with the movable frame, the driven wheel can be rotatably fixed on the movable frame, the rotating part can rotate and is connected and fixed to the movable part or the fixed part, the rotation axis of the rotating part is arranged along the telescopic direction of the movable part, the movable frame drives the driven wheel to move under the action of the telescopic mechanism, and makes the polishing belt tightened and fixed outside the driving wheel and the driven wheel.

[0008] The present invention sets a telescopic mechanism so that the polishing belt can be stretched and the tension of the polishing belt can be adjusted to prevent the polishing belt from detaching from the driven wheel, so as to ensure the polishing effect. And due to the setting of the self-rotating part, the driven wheel can rotate with the unevenness of the workpiece surface, so that the driven wheel can automatically adjust the angle, so that the contact area between the polishing belt at the driven wheel and the welding part is larger, so as to shorten the grinding time and improve the polishing efficiency. Among them, due to the setting of the self-rotating part, the present invention can perform better polishing on workpieces with inclined surfaces without worrying about over-polishing.

[0009] Preferably, the telescopic mechanism is a cylinder, and one end of the movable part located in the fixed part is connected and fixed to the rotating part. The telescopic mechanism adopts a cylinder to avoid excessive contact between the polishing belt and the workpiece; wherein, the elastic force formed by the gas inside the cylinder is constant and will not change due to the amount of retraction of the telescopic part of the cylinder, which can make the polishing process more stable and the polishing effect better. The air pressure can be adjusted by the precision pressure regulating valve of the cylinder to control the size of the elastic force formed by the cylinder. The cylinder stroke can be adjusted by a center-sealed three-position five-way valve to achieve the adjustment of the movable frame and the driven wheel stroke, so as to achieve the adjustment of the tension force of the polishing belt. Among them, the telescopic mechanism can be a standard double-acting cylinder.

[0010] Preferably, the self-rotating part is coaxially arranged with the movable part, the self-rotating part can be rotatably fixed to one end of the movable part outside the fixed part and fixed to the movable frame, and a rotating structure is formed between the end of the movable part outside the fixed part and the end of the self-rotating part away from the movable frame, and the rotating structure includes an annular groove and an annular protrusion in the annular groove. The setting of the rotating structure can limit the circumferential movement of the self-rotating part relative to the fixed part, and can ensure the polishing effect.

[0011] Preferably, a fixed block is fixed to one end of the movable part outside the fixed part, the rotating structure is provided between the circumferential side wall of the fixed block and the circumferential side wall of the rotating part, a plane bearing is fixed inside the fixed block, the plane bearing is in contact with the rotating part, and the plane bearing is located between the movable part and the rotating part. The setting of the fixed block makes the assembly of the telescopic mechanism more convenient, wherein the fixed block can be connected and fixed to the movable part by riveting or other means. And the setting of the plane bearing can reduce the friction force when the rotating part rotates, so as to ensure the reporting effect.

[0012] Preferably, the fixing block is provided with a through hole for the rotating part to pass through, the inner wall of the through hole extends circumferentially outward to form the annular groove, and the plane bearing is located in the through hole, and the part of the rotating part located in the through hole is provided with the annular protrusion.

[0013] Preferably, the middle part of the surface of the driven wheel and / or the driving wheel for contacting the polishing belt extends outward in the circumferential direction, so that the cross section of the surface of the driven wheel and / or the driving wheel for contacting the polishing belt is V-shaped or arc-shaped. When the polishing belt is stretched, the left and right movement of the polishing belt will be restricted because the middle part of the surface of the driven wheel or the driving wheel is convex outward, so as to further prevent the polishing belt from detaching from the driven wheel.

[0014] The present invention has the advantages of improving the polishing effect and the polishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of the present invention;

[0016] Figure 2 A cross-sectional view of a driven wheel of the present invention;

[0017] Figure 3 Another telescopic mechanism of the present invention;

[0018] Figure 4 for Figure 3 A magnified view of the rotating structure. DETAILED DESCRIPTION

[0019] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] Depend on Figure 1 , Figure 2As shown, a polishing assembly of the present invention includes a fixed frame, which is composed of a fixed frame body 1 and a connecting frame 2 extending downward, a driving motor 3 is fixed on the fixed frame body 1, a telescopic mechanism 4 is fixed at the lower end of the connecting frame 2, a driving wheel 31 is fixed at the output end of the driving motor 3, the driving wheel 31 is linked with a driven wheel 32, and the outer sleeves of the driving wheel 31 and the driven wheel 32 are provided with a polishing belt 33 in an enclosed shape, the telescopic mechanism 4 includes a fixed portion 41, a movable portion 42 and a rotating portion, one end of the movable portion 42 is located in the fixed portion 41, and the other end of the movable portion 42 extends to the outside of the fixed portion 41 and is linked and fixed with a movable frame 5, the movable frame 5 is an N-shaped structure, the driven wheel 32 can be rotatably fixed on the movable frame 5, the rotating portion can rotate relative to the fixed portion 41 and is connected and fixed to the movable portion 42, the rotation axis of the rotating portion is arranged along the telescopic direction of the movable portion 42, the movable frame 5 drives the driven wheel 32 to move in a straight line under the action of the telescopic mechanism 4, and the polishing belt 33 is tightened and fixed outside the driving wheel 31 and the driven wheel 32.

[0022] The middle part of the surface of the driven wheel 32 for contacting the polishing belt 33 extends outward in the circumferential direction, so that the cross section of the surface of the driven wheel 32 for contacting the polishing belt 33 is arranged in a V shape. The telescopic mechanism 4 of this embodiment is a cylinder, and one end of the movable part 42 located in the fixed part is connected and fixed to the rotating part, and the movable part of the cylinder can rotate relative to the fixed part.

[0023] Example 2

[0024] Depend on Figure 3 and Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the telescopic mechanism is different. The telescopic mechanism of this embodiment can adopt an electric push rod.

[0025] The rotating part 43 is coaxially arranged with the movable part 42 (the top tube of the electric push rod). The rotating part 43 can be rotatably fixed to one end of the movable part 42 located outside the fixed part 41 (the top tube of the electric push rod) and fixed to the movable frame 5. The rotating structure that cooperates with each other between the end of the movable part 42 located outside the fixed part 41 and the end of the rotating part 43 away from the movable frame 5 includes an annular groove 61 and an annular protrusion 62 located in the annular groove 61.

[0026] A fixed block 6 is fixed to one end of the movable part 42 located outside the fixed part 41, and the rotating structure is provided between the circumferential side wall of the fixed block 6 and the circumferential side wall of the rotating part 43. A plane bearing 63 is fixed inside the fixed block 6, and the plane bearing 63 contacts the rotating part 43. The plane bearing 63 is located between the movable part 42 and the rotating part 43. The fixed block 6 is provided with a through hole for the rotating part 43 to pass through, and the inner wall of the through hole extends outward in the circumferential direction to form the annular groove 61, and the plane bearing 63 is located in the through hole, and the portion of the rotating part 43 located in the through hole is provided with the annular protrusion 62.

[0027] The present invention can be used for polishing the welding point between the head and the cylinder of a pressure vessel. The connecting frame is extended into the pressure vessel so that the polishing belt at the driven wheel contacts the part to be polished on the inner wall of the pressure vessel. Then the driving motor is started and the pressure vessel is rotated under the action of other equipment. Due to the setting of the telescopic mechanism, the polishing belt is always in contact with the inner wall of the pressure vessel. The driven wheel can adjust the angle accordingly according to the different concave and convex parts to be polished with the rotation of the pressure vessel, so that the contact area between the polishing belt and the part to be polished is larger, the polishing effect is better, and the efficiency is higher.

[0028] The present invention has the advantages of improving the polishing effect and the polishing efficiency.

Claims

1. A polishing assembly, characterized in that: The invention relates to a fixing frame, wherein a driving motor and a telescopic mechanism are fixed on the fixing frame, a driving wheel is fixed on the output end of the driving motor, the driving wheel is linked with a driven wheel, and the outer shells of the driving wheel and the driven wheel are provided with a polishing belt in an enclosed shape, the telescopic mechanism comprises a fixing part, a movable part and a self-rotating part, one end of the movable part is located in the fixing part, the other end of the movable part extends to the outside of the fixing part and is connected to the self-rotating part, the self-rotating part can rotate and is connected and fixed to the movable frame, the driven wheel can be rotatably fixed on the movable frame, the rotation axis of the self-rotating part is arranged along the telescopic direction of the movable part, the movable frame drives the driven wheel to move under the action of the telescopic mechanism, and makes the polishing belt tightened and fixed outside the driving wheel and the driven wheel; the telescopic mechanism is a cylinder; the self-rotating part is coaxially arranged with the movable part, the self-rotating part can be rotatably connected to one end of the movable part located outside the fixing part, a rotating structure cooperating with each other is provided between one end of the movable part located outside the fixing part and one end of the self-rotating part away from the movable frame, the rotating structure comprises an annular groove and an annular protrusion located in the annular groove; A fixed block is fixed to one end of the movable part outside the fixed part, the rotating structure is arranged between the circumferential side wall of the fixed block and the circumferential side wall of the rotating part, a plane bearing is fixed inside the fixed block, the plane bearing is in contact with the rotating part, and the plane bearing is located between the movable part and the rotating part; The fixing block is provided with a through hole for the rotation part to pass through, the inner wall of the through hole extends circumferentially outward to form the annular groove, and the plane bearing is located in the through hole, and the part of the rotation part located in the through hole is provided with the annular protrusion.

2. The polishing assembly according to claim 1, characterized in that: The middle part of the surface of the driven wheel and / or driving wheel for contacting the polishing belt extends circumferentially outward, so that the cross section of the surface of the driven wheel and / or driving wheel for contacting the polishing belt is V-shaped or arc-shaped.

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