CN113352190A

CN113352190A - Self-adaptive expansion mechanism and self-adaptive expansion polishing mechanism thereof

Info

Publication number: CN113352190A
Application number: CN202110664908.2A
Authority: CN
Inventors: 韩立光; 杨彤; 刘立; 纪翔镜
Original assignee: Shandong Zhongke Advanced Technology Research Institute Co ltd
Current assignee: Shandong Zhongke Advanced Technology Research Institute Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-09-07

Abstract

The invention discloses a self-adaptive expansion mechanism and a self-adaptive expansion polishing mechanism thereof, wherein the self-adaptive expansion mechanism comprises a rotating wheel and an elastic leather cavity connected to the outer ring of the rotating wheel, a plurality of piston cavities are uniformly arranged in the rotating wheel along the radial direction, the outer diameter side opening of each piston cavity is communicated with the elastic leather cavity, the inner diameter side opening of each piston cavity is communicated with the atmosphere, a limiting structure is arranged at the inner diameter side opening, a piston capable of centrifugally sliding is arranged in each piston cavity, and gas can be supplemented into the elastic leather cavity and can be enabled to reach an expansion state when the piston centrifugally slides; according to the invention, the elastic leather cavity is arranged on the outer ring of the rotating wheel, the piston is arranged in the rotating wheel in the radial direction, the piston can move centrifugally through the rotation of the rotating wheel, and gas is supplemented into the elastic leather cavity, so that the centrifugal force of the piston can be adjusted through adjusting the rotating speed, the expansion state of the elastic leather cavity can be adjusted, and finally a self-adaptive state is achieved.

Description

Self-adaptive expansion mechanism and self-adaptive expansion polishing mechanism thereof

Technical Field

The invention relates to the technical field of polishing tools, in particular to a self-adaptive expansion mechanism and a self-adaptive expansion polishing mechanism thereof.

Background

A runner spare surface spiral arrangement has many "U" type grooves for moulding plastics trade, and this "U" type groove processing back still needs to polish the groove surface to reach the smooth finish of industry requirement. Most of the traditional methods are manual polishing, and workers manually polish the interior of the U-shaped groove by using tools such as a polishing head wound with sand paper or a grinding wheel disc. In order to realize all-round grinding in the groove, the outer diameter of the grinding tool must be smaller than the inner diameter of the groove, and the angle and position of the grinding tool need to be changed continuously, so that the efficiency is low, and uneven grinding is easy to cause.

The ideal state of polishing is that the appearance of the polishing tool is completely matched with the size of the U-shaped groove, and then the polishing can be completed once along the trend of the groove. However, the grinding tool is not easy to be completely fit with the inner wall of the groove, the size is slightly larger, the grinding tool cannot be placed into the groove, the size is smaller, and all positions of the groove cannot be ground; in addition, the grinding tool can be abraded in the process of being in contact with a ground piece for grinding, and even if slight abrasion occurs, the grinding tool cannot be completely matched with the groove any more; at this time, the surface which cannot be polished needs to be polished again for many times by adjusting the angle and position of the polishing tool, and the polishing efficiency is also greatly reduced.

Chinese patent with publication number CN 2363833Y discloses an air drum type polishing roller, which is provided with an air chamber on a central shaft, and the air is injected into the air chamber through an air nozzle to cause the expansion of an air drum rubber container, so that a polishing roller disc is fastened on the air drum rubber container.

The application publication No. CN 111331458 discloses a 3D printing finished product polishing assembly and a polishing device, wherein a plurality of bulges are arranged outside an air bag at intervals, the air bag is placed on the inner side of a printing finished product, one end of the air bag is connected with an air pump, the air pump intermittently charges air into the air bag, the pressure or/and the flow of the air can be adjusted, and the air in the air bag can be vibrated by controlling the air inflow of the air pump; in the gasbag trembles the in-process, when gasbag one department atmospheric pressure increased, make gasbag itself take place the arch, gasbag outer wall and printing finished product inner wall laminating friction, that is to say, this scheme is through setting up the air pump to change the protruding size of control gasbag of air pump pressure and/or flow and realize the laminating friction to the face of being polished, however, this scheme must set up the air pump, and requirement pressure and flow are adjustable moreover, and consequently, this scheme structure is complicated, uses loaded down with trivial details.

Disclosure of Invention

The invention aims to provide a self-adaptive expansion mechanism and a self-adaptive expansion polishing mechanism thereof, which are used for solving the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a self-adaptive expansion mechanism which comprises a rotating wheel and an elastic leather cavity connected to the outer ring of the rotating wheel, wherein a plurality of piston cavities are uniformly arranged in the rotating wheel in the radial direction, an outer diameter side opening of each piston cavity is communicated with the elastic leather cavity, an inner diameter side opening of each piston cavity is communicated with the atmosphere, a limiting structure is arranged at the inner diameter side opening of each piston cavity, a piston capable of centrifugally sliding is arranged in each piston cavity, and when the piston centrifugally slides, gas can be supplemented into the elastic leather cavity and the elastic leather cavity can be expanded.

Preferably, the rotating wheel is provided with a central through hole in the axial direction, and the central through hole is communicated with the inner diameter side opening.

Preferably, the diameter of the outer diameter side opening is equal to the diameter of the piston, a hollowed-out blocking piece is arranged on the outer side of the outer diameter side opening, the diameter of the inner diameter side opening is smaller than the diameter of the piston, and the inner diameter side opening forms the limiting structure.

Preferably, both end portions of the piston are provided with a seal ring on an outer diameter.

Preferably, a plurality of lightening holes are axially formed around the central through hole.

Preferably, the lightening holes are waist-shaped holes, and the inflating valve of the elastic leather cavity is arranged in one of the waist-shaped holes.

Preferably, the kidney-shaped holes and the piston cavity are circumferentially arranged at intervals, and four kidney-shaped holes are respectively arranged.

Preferably, the rotating wheel is connected with a clamping rod, the end part of the clamping rod is connected with a flange plate, and the flange plate is connected to the end face of the central through hole.

The invention also provides a self-adaptive expansion polishing mechanism which comprises the self-adaptive expansion mechanism recorded in the foregoing, wherein the outer ring of the elastic leather cavity is connected with side abrasive paper.

Preferably, the two end faces of the elastic leather cavity are respectively connected with bottom sand paper.

Compared with the prior art, the invention has the following technical effects:

(1) the outer ring of the rotating wheel is provided with the elastic leather cavity, the piston cavity and the piston which is arranged in the piston cavity in a sliding mode are arranged in the rotating wheel in the radial direction, the piston cavity is communicated with the elastic leather cavity, the centrifugal force of the piston can be adjusted through adjusting the rotating speed, when the rotating speed is high, the centrifugal force is high, the pressure of the piston moving towards the elastic leather cavity is increased, the expansion state of the elastic leather cavity can be further improved, otherwise, the expansion state of the elastic leather cavity can be reduced, when the elastic leather cavity leaks, the pressure of the elastic leather cavity can be reduced, at the moment, the piston can move towards the elastic leather cavity until the centrifugal force of the piston is balanced with the pressure of gas in the elastic leather cavity, the piston is stable, and therefore, the whole device can achieve a self-adaptive state according to the conditions of the rotating speed, the leakage of the elastic leather cavity and the like;

(2) the hollow blocking piece is arranged on the outer side of the outer side opening of the piston cavity and can ensure the communication between the piston cavity and the elastic leather cavity and limit the movement of the piston, so that the damage to the elastic leather cavity caused by throwing out the rotating wheel when the centrifugal force is too large is avoided, and the personal safety of an operator is ensured;

(3) in addition, an air valve mounting hole communicated with the elastic leather cavity can be further arranged in the lightening hole, so that an air valve of the elastic leather cavity can be arranged in the lightening hole, and the air valve is convenient to mount and arrange;

(4) according to the invention, the side abrasive paper is arranged on the outer ring of the elastic leather cavity, the bottom abrasive paper is arranged on two end surfaces, the U-shaped notch and other structures can be polished, the expansion state of the elastic leather cavity can be adjusted by adjusting the rotating speed according to the polishing depth, the abrasion condition and the like, the shape of the polished surface can be further fitted, the polishing precision is ensured, the condition that polishing is carried out again for multiple times by adjusting the angle and the position of a polishing tool is avoided, and the polishing efficiency can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an exploded view of the leather chamber, side sandpaper and bottom sandpaper hidden in FIG. 1;

wherein, 1, a clamping rod; 2. a rotating wheel; 21. air holes are formed; 22. a piston cavity; 23. a valve mounting hole; 24. lightening holes; 25. a central through hole; 3. a piston; 31. a seal ring; 4. hollowing out the baffle plate; 5. an elastic leather chamber; 6. side sand paper; 7. bottom sand paper; 8. an air valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 3, the invention provides a self-adaptive expansion mechanism, which comprises a rotating wheel 2 and an elastic leather cavity 5 connected to the outer ring of the rotating wheel 2, wherein the rotating wheel 2 is of a circular structure, has uniform mass distribution, and can be connected to a rotating mechanism through a clamping rod 1 or installed on a rotating shaft through a central through hole 25 in the middle to realize rotation; the elastic leather cavity 5 can be made of rubber, has certain elasticity, is connected with the rotating wheel 2 in a sealing way, can expand after being inflated, and can contract after being deflated; and is provided with an air valve 8, and air inflation and deflation are carried out through the air valve 8. The diameter of the rotor 2 and the diameter of the elastic bellows 5 can be selected as needed, and the rotor can be inflated to a limit state after inflation, and can be inflated to compensate for the deformation of the elastic bellows 5 when a part of gas leaks. The interior of the rotating wheel 2 is uniformly provided with a plurality of piston cavities 22 along the radial direction, the outer diameter side opening of each piston cavity 22 is communicated with an elastic leather cavity 5, and the inner diameter side opening is communicated with the atmosphere, namely, the elastic leather cavities 5 are communicated with the atmosphere through the piston cavities 22 except for being inflated and deflated through the inflating valves 8. For the position where the piston chamber 22 communicates with the atmosphere, an opening communicating with the inner diameter side opening of the piston chamber 22 may be provided on the end surface of the rotation wheel 2, or a central through hole 25 may be provided at the center of the rotation wheel 2 and an air hole 21 may be provided on the inner wall of the central through hole 25 so that the air hole 21 communicates with the piston chamber 22. The number of the piston chambers 22 may be two, three or more and uniformly dispersed to ensure stability of the rotation state. The piston cavity 22 is internally provided with a piston 3 which can centrifugally slide, and the piston 3 and the inner wall of the piston cavity 22 are in sliding seal, so that the elastic leather cavity 5 is isolated from the outside atmosphere through the piston 3. It should be noted that the piston 3 should have a certain mass, so that a sufficient centrifugal force can be generated during rotation to resist the pressure transmitted by the elastic bellows 5, and the mass is not too large, otherwise a large centrifugal force may be generated to excessively expand the elastic bellows 5 when a predetermined rotation speed is not reached. The relationship between the material selection of the piston 3, the rotation speed of the rotating wheel 2 and the magnitude of the elastic force of the elastic bellows 5 is reasonably selected and set by the person skilled in the art according to the technical solution concept of the present invention, and is not the inventive feature of the present invention, and will not be described herein again. Be provided with limit structure in the internal diameter side opening department of piston chamber 22, after being full of gas in elasticity leather chamber 5, because piston chamber 22 and elasticity leather chamber 5 intercommunication, gas can promote piston 3 and move centripetally, stops after touchhing limit structure, and then reaches the equilibrium state of piston chamber 22 and elasticity leather chamber 5 before the rotation when initial condition. In the working state, the piston 3 is centrifugally slid towards the elastic leather chamber 5 under the action of centrifugal force, and at the moment, under the extrusion action of the piston 3, gas is extruded from the piston chamber 22 into the elastic leather chamber 5, so that the gas is supplemented into the elastic leather chamber 5 and is enabled to reach another expansion state. The invention is characterized in that an elastic leather cavity 5 is arranged on the outer ring of a rotating wheel 2, a piston cavity 22 and a piston 3 which is arranged in the piston cavity 22 in a sliding way are arranged in the rotating wheel 2 along the radial direction, the piston cavity 22 is communicated with the elastic leather cavity 5, the centrifugal force of the piston 3 can be adjusted by adjusting the rotating speed, when the rotating speed is high, the centrifugal force is high, the pressure of the piston 3 moving towards the elastic leather cavity 5 is increased, thereby increasing the expansion state of the elastic bellows 5, and conversely decreasing the expansion state of the elastic bellows 5, so that when there is a leak in the elastic bellows 5, the pressure will decrease, at this time, the piston 3 will move towards the elastic bellows 5 until the centrifugal force of the piston 3 is balanced with the pressure applied to the piston 3 by the gas in the elastic bellows 5, therefore, the invention can lead the whole device to achieve a self-adaptive state according to the rotating speed, the leakage of the elastic bellows 5 and other conditions.

As shown in fig. 2 to 3, the rotor 2 may be provided with a central through hole 25 in the axial direction, the central through hole 25 may be provided at the center of the rotor 2, and the central through hole 25 may communicate with all the inner diameter side openings of the piston chambers 22 through the air holes 21. Therefore, all the piston cavities 22 are arranged centripetally, and can be communicated with all the piston cavities 22 only by arranging one central through hole 25, so that the method of arranging a plurality of communicated atmosphere holes on the rotating wheel 2 is omitted, and the air holes 21 are the same as the piston cavities 22 in the axial direction, so that the piston 3 can be favorably supplemented with external air inwards when moving, namely, the piston 3 can be favorably moved centrifugally under the action of centrifugal force.

As shown in fig. 2, the diameter of the outer diameter side opening of the piston chamber 22 is equal to the diameter of the piston 3, and the piston 3 can be smoothly fitted into the piston chamber 22 through the outer diameter side opening. The outside of the outer diameter side opening is provided with a hollow separation blade 4, and the hollow separation blade 4 can form a limit at the opening at the outer diameter side after the piston 3 is installed, so that the piston 3 is prevented from being separated from the piston cavity 22. The hollow separation blade 4 can have a certain radian, can be attached to the outer diameter side radian of the rotating wheel 2, is provided with through holes in two sides of the hollow separation blade 4, and can be installed on the rotating wheel 2 after a screw passes through the through holes. Therefore, the hollow separation blade 4 can ensure the communication between the piston cavity 22 and the elastic leather cavity 5, can limit the movement of the piston 3, avoids the damage to the elastic leather cavity 5 caused by throwing the rotating wheel 2 when the centrifugal force is too large, and ensures the personal safety of an operator. The diameter of the side opening of the inner diameter side of the piston cavity 22 is smaller than that of the piston 3, so that a limiting structure for the centripetal motion of the piston 3 can be formed at the opening of the inner diameter side, and the phenomenon that the piston 3 is separated from the piston cavity 22 due to the increase of the pressure in the elastic leather cavity 5 is avoided.

As shown in fig. 3, the two end portions of the piston 3 may further be provided with a sealing ring 31 on the outer diameter, and the sealing ring 31 may further ensure the sealing property between the piston 3 and the inner wall of the piston cavity 22, so as to prevent the gas in the elastic bellows 5 from leaking outwards through the piston cavity 22. The number of the seal rings 31 may be plural, preferably two, in the longitudinal direction of the piston 3, that is, one seal ring 31 is provided near each of both end portions.

As shown in fig. 1 and 3, a plurality of lightening holes 24 are formed in the rotor 2 along the circumference of the central through hole 25, the lightening holes 24 are formed in the axial direction of the rotor 2, and the lightening holes 24 are uniformly distributed, and the size is set according to the size and the moment of inertia of the rotor 2. In addition, the lightening holes 24 can be through holes or blind holes, and are reasonably designed according to a machining scheme and lightening requirements, preferably are through holes, so that the machining and the forming are convenient. The weight of the rotor 2 itself can be reduced by providing the lightening holes 24 in the rotor 2, and the moment of inertia of the rotor 2 can be reduced, thereby reducing energy loss when the rotor 2 idles.

The lightening holes 24 may be kidney-shaped holes, which may be formed in a larger area in the annular space of the rotating wheel 2 than circular holes on the premise of the same number. The inflating valve 8 of the elastic leather cavity 5 can be arranged in one waist-shaped hole, specifically, an inflating valve mounting hole 23 is formed in the side wall of the waist-shaped hole, the inflating valve 8 penetrates through the inflating valve mounting hole 23 and then is communicated with the elastic leather cavity 5, and it needs to be noted that the inflating valve 8 is sealed with the inflating valve mounting hole 23, so that gas leakage is avoided. The valve 8 of the elastic leather cavity 5 is arranged in the lightening hole 24, and a position can be reserved for the arrangement of the valve 8, so that the installation and the arrangement of the valve 8 are convenient.

Since the lightening holes 24 occupy part of the axial space of the rotary wheel 2, the piston cavities 22 should be arranged to avoid the lightening holes 24, and the lightening holes 24 and the piston cavities 22 may be arranged at intervals in order to make the whole rotary wheel 2 uniformly distributed. The number of the lightening holes 24 and the number of the piston cavities 22 can be set reasonably according to the weight, the moment of inertia, the size of the opening and the like, and the number of the lightening holes 24 and the number of the piston cavities 22 are kept equal when the lightening holes are arranged at intervals, namely, the number of the lightening holes 24 is equal to the number of the piston cavities 22. For example, four may be provided, respectively.

As shown in FIGS. 1 to 3, in order to avoid the blocking of the air holes 21 or the difficulty of the rotation shaft setting, which may be caused by the rotation shaft arranged in the central through hole 25, the rotation wheel 2 may be connected through the clamping rod 1, the clamping rod 1 includes a straight rod and a flange connected to the end of the straight rod, the straight rod and the flange may be connected together by welding, or may be integrally forged or turned. The other end face of the flange plate is connected to the end face of the central through hole 25, specifically, a plurality of screw holes are arranged around the end face of the central through hole 25, and the clamping rod 1 is arranged on the rotating wheel 2 after a plurality of screws are arranged on the flange plate in a penetrating mode.

Referring to fig. 1 to 3 again, the present invention further provides a self-adaptive expansion polishing mechanism, which may include the self-adaptive expansion mechanism described above, wherein the outer ring of the elastic leather cavity 5 is connected with the side abrasive paper 6, during the connection, a hook layer may be disposed on the surface of the elastic leather cavity 5, and a flocking layer is disposed on one side of the side abrasive paper 6, so that the side abrasive paper 6 may be directly attached to the surface of the elastic leather cavity 5. Can change at any time after 6 wearing and tearing of side abrasive paper, and it is comparatively convenient to change.

Because the side sand paper 6 is arranged on the elastic leather cavity 5, the polishing surface is elastic, and after certain pressure gas is filled into the elastic leather cavity 5, the U-shaped polished surface can be well attached. When the piston 3 is not rotated, the piston is pressed to the inner diameter side position of the piston cavity 22 by pressure gas, the whole polishing mechanism rotates during polishing, the piston 3 is far away from the central position of the rotating wheel 2 due to the action of centrifugal force, and when the centrifugal force and the pressure in the elastic leather cavity 5 reach balance, the piston 3 is in a balance position. When the rotational speed improves, centrifugal force increases, and 3 outside through the side removal of piston, the increase of 5 internal pressure in elasticity leather chamber, and the side abrasive paper 6 that 5 surface subsides in elasticity leather chamber applied increases to the pressure that "U" type slot surface produced to increase the degree of depth of polishing, and then improved the efficiency of polishing. In addition, when a certain amount of gas in the elastic bellows 5 or the piston cavity 22 leaks, the pressure in the elastic bellows 5 decreases, and the piston 3 can further move towards the elastic bellows 5, so as to ensure the balance between the pressure in the elastic bellows 5 and the centrifugal force. Finally, the whole system can reach an adaptive state.

In order to better protect the elastic leather chamber 5 and further improve the polishing contact area and polishing effect, the two end surfaces of the elastic leather chamber 5 can be respectively connected with bottom sand paper 7.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. An adaptive expansion mechanism, characterized by: including swiveling wheel and connection the elasticity leather chamber of swiveling wheel outer lane, the inside a plurality of piston chambeies that evenly are provided with along the radial of swiveling wheel, the external diameter side opening intercommunication in piston chamber elasticity leather chamber, internal diameter side opening intercommunication atmosphere, just internal diameter side opening part is provided with limit structure, but install the gliding piston of centrifugation in the piston intracavity, during the piston centrifugation slides can to elasticity leather intracavity make-up gas makes it reach the inflation state.

2. The adaptive expansion mechanism of claim 1, wherein: the rotating wheel is provided with a central through hole along the axial direction, and the central through hole is communicated with the inner diameter side opening.

3. The adaptive expansion mechanism of claim 2, wherein: the diameter of the outer diameter side opening is equal to the diameter of the piston, the outer diameter side opening is provided with a hollowed-out blocking piece, the diameter of the inner diameter side opening is smaller than the diameter of the piston, and the inner diameter side opening is formed in the limiting structure.

4. The adaptive expansion mechanism of claim 3, wherein: and sealing rings are arranged on the outer diameters of the two end parts of the piston.

5. An adaptive expansion mechanism according to any one of claims 2-4, wherein: and a plurality of lightening holes are axially formed around the central through hole.

6. The adaptive expansion mechanism of claim 5, wherein: the lightening holes are waist-shaped holes, and the inflating valve of the elastic leather cavity is arranged in one waist-shaped hole.

7. The adaptive expansion mechanism of claim 6, wherein: the waist-shaped holes and the piston cavities are arranged at intervals along the circumferential direction and are respectively provided with four.

8. The adaptive expansion mechanism of claim 5, wherein: the rotating wheel is connected with a clamping rod, the end part of the clamping rod is connected with a flange plate, and the flange plate is connected to the end face of the central through hole.

9. The utility model provides a self-adaptation inflation grinding machanism which characterized in that: comprising an adaptive expansion mechanism according to any of claims 1-8, wherein a side sandpaper is attached to the outer circumference of the elastic bellows.

10. The adaptive expansion sanding mechanism of claim 9, wherein: and two end faces of the elastic leather cavity are respectively connected with bottom sand paper.