阅读说明：本技术 一种小型手持式抛光机 (Small-size hand-held type burnishing machine ) 是由 常康 于 2021-09-18 设计创作，主要内容包括：本发明涉及抛光设备技术领域,且公开了一种小型手持式抛光机,包括主体,主体的底部活动套接有主轴,主轴的中部活动套接有壳体,主轴的底部固定连接有转动盘。通过第一滑块、活动管、滤网的设置,由于壳体旋转,会使第二滑块在离心力作用向外侧移动,不仅能够使活动管与转动盘之间存在间隙,同时还会使得滤网与出风口重合,同时旋转叶轮旋转将套管内部空气从出风口排出,而活动管则从抛光轮周围吸入空气,实现空气流动,能够将打磨抛光过程中产生的粉尘吸入套管内部,再通过滤网的过滤截留,完成粉尘的收集,当抛光结束后,活动管会在支撑弹簧的回弹下重新与转动盘接触,从而避免套管内部粉尘泄露,并可以在工作完成后从出风口排出。(The invention relates to the technical field of polishing equipment and discloses a small handheld polishing machine which comprises a main body, wherein a main shaft is movably sleeved at the bottom of the main body, a shell is movably sleeved at the middle part of the main shaft, and a rotating disc is fixedly connected to the bottom of the main shaft. Through first slider, the movable tube, the setting of filter screen, because the casing is rotatory, can make the second slider remove to the outside at centrifugal force effect, not only can make and have the clearance between movable tube and the rolling disc, still can make filter screen and air outlet coincidence simultaneously, rotatory impeller is rotatory to be discharged the intraductal air of cover from the air outlet, and the movable tube then inhales the air around the throwing aureola from throwing aureola, realize the air flow, can inhale the intraductal portion of cover with the dust that produces among the burnishing and polishing process, the filtration of rethread filter screen is held back, accomplish the collection of dust, after the polishing, the movable tube can be under supporting spring's resilience again with the rolling disc contact, thereby avoid the inside dust of cover to reveal, and can discharge from the air outlet after work is accomplished.)

1. The utility model provides a small-size hand-held type burnishing machine, includes main part (1), main shaft (2) have been cup jointed in the bottom activity of main part (1), casing (3) have been cup jointed in the middle part activity of main shaft (2), the bottom fixedly connected with rolling disc (4) of main shaft (2), its characterized in that: four groups of fixed rods (17) which are arranged in an equal circumference manner are movably sleeved on the side surface of the middle part of the rotating disc (4), the bottom of each fixed rod (17) is fixedly connected with a polishing wheel (5), the upper end of each fixed rod (17) is movably sleeved with a fixed pipe (18), the upper end of each fixed pipe (18) is fixedly connected with the shell (3), a screw (19) in threaded connection with the shell (3) is arranged above each fixed pipe (18), a second sliding chute (20) which is arranged on the upper surface of the shell (3) is arranged on one side, away from the main shaft (2), of each screw (19), a second sliding block (21) is movably sleeved in the second sliding chute (20), one end of each second sliding block (21) is fixedly connected with a return spring (22), and one end, facing the screw (19), of each second sliding block (21) is fixedly connected with a second connecting rope (23), the bottom of the screw (19) is movably sleeved with a sealing plate (24) which is movably sleeved with the fixed pipe (18), the bottom of the sealing plate (24) is movably sleeved with a movable plate (25), and the other end of the second connecting rope (23) sequentially penetrates through the middle parts of the screw (19) and the sealing plate (24) and is fixedly connected with the middle part of the upper end of the movable plate (25).

2. The small hand-held polishing machine of claim 1, wherein: an impeller (6) fixedly connected with the main shaft (2) is arranged above the rotating disc (4), a dust cover (7) is fixedly connected with the edge of the bottom end of the shell (3), a sleeve (8) is fixedly connected with the bottom of the shell (3), a movable pipe (9) is movably sleeved on the outer side of the sleeve (8), a plurality of groups of supporting springs (10) fixedly connected with the other ends of the movable pipe (9) and the shell (3) are fixedly connected with the inner side of the upper end of the movable pipe (9), four groups of first connecting ropes (11) which are arranged in an equal circumference manner are fixedly connected with the outer side of the upper end of the movable pipe (9), four groups of first sliding chutes (12) which are arranged in an equal circumference manner and are arranged at the bottom of the shell (3) are arranged on the outer side of the sleeve (8), a first sliding block (13) is movably sleeved on the inner side of the first sliding chute (12), and a connecting rod (14) which is movably sleeved with the shell (3) is fixedly connected with the middle of the first sliding block (13) towards one end of the main shaft (2), and first slider (13) are towards the bottom and first connecting rope (11) fixed connection of main shaft (2) one end, air outlet (15) of four groups and first spout (12) looks adaptation are seted up in the outside at casing (3) middle part, the bottom of air outlet (15) is provided with filter screen (16) that cup joints with casing (3) activity, the other end and filter screen (16) fixed connection of connecting rod (14).

3. The small hand-held polishing machine of claim 1, wherein: the bottom of the screw (19) is provided with an inverted cone, and a gap exists between the sealing plate (24) and the movable plate (25).

4. The small hand-held polishing machine of claim 1, wherein: the middle part of the movable plate (25) is provided with a one-way valve with an opening facing the sealing plate (24).

5. The small hand-held polishing machine of claim 1, wherein: the air outlet (15) and the main shaft (2) are both positioned on the extension line of the first sliding groove (12).

6. The small hand-held polishing machine of claim 1, wherein: the first connecting rope (11) and the second connecting rope (23) are made of inelastic materials.

Technical Field

The invention relates to the technical field of polishing equipment, in particular to a small handheld polishing machine.

Background

The polishing machine is also called as a grinding machine and is often used for mechanical grinding, polishing and waxing, the polishing wheel is driven to rotate by the motor to polish and polish a workpiece, the roughness of the surface of the workpiece is reduced, the surface of the workpiece becomes bright and flat, and the handheld polishing machine is a small portable device, is small in size, can be operated by a single person and is convenient to carry.

However, the existing hand-held small polishing machine has the following defects in the actual use process: firstly, most polishing disks on the existing hand-held small polishing machines are fixed in a threaded connection mode through parts such as nuts and screws, and when the polishing disks are replaced, the small polishing machines are smaller in structural size, so that the parts such as the screws are relatively smaller, a large amount of time is needed for replacement, the polishing wheels are inconvenient to replace quickly, and the progress of polishing work is seriously influenced; secondly, current hand-held type burnishing machine is in the use, because the buffing wheel takes place friction, polishing with the machined part surface, can produce a large amount of dust inevitably, and these dust can disperse in the air, serious staff's operational environment, because still produce the spark easily among the burnishing and polishing process in addition, in case the spark meets the dust, still there is the hidden danger that takes place dust explosion, can influence staff's healthy after the human body inhales the dust simultaneously.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides a small-sized handheld polishing machine which has the advantages of being capable of quickly replacing a polishing wheel, preventing the polishing wheel from falling off and removing dust generated by polishing, and solves the problems in the background technology.

The invention provides the following technical scheme: a small-sized hand-held polishing machine comprises a main body, wherein a main shaft is movably sleeved at the bottom of the main body, a shell is movably sleeved at the middle part of the main shaft, a rotating disc is fixedly connected at the bottom of the main shaft, four groups of fixed rods which are arranged in an equal circumference manner are movably sleeved at the side surface of the middle part of the rotating disc, polishing wheels are fixedly connected at the bottoms of the fixed rods, a fixed pipe is movably sleeved at the upper end of each fixed rod, the upper end of the fixed pipe is fixedly connected with the shell, a screw which is in threaded connection with the shell is arranged above the fixed pipe, a second sliding groove which is arranged on the upper surface of the shell is arranged at one side of the screw, which is far away from the main shaft, a second sliding block is movably sleeved in the second sliding groove, one end of the second sliding block is fixedly connected with a reset spring, one end of the second sliding block, which faces the screw, is fixedly connected with a second connecting rope, and a sealing plate which is movably sleeved at the bottom of the screw, the bottom of the sealing plate is movably sleeved with a movable plate, and the other end of the second connecting rope sequentially penetrates through the middle of the screw and the sealing plate and is fixedly connected with the middle of the upper end of the movable plate.

Preferably, an impeller fixedly connected with the main shaft is arranged above the rotating disc, a dust cover is fixedly connected with the edge of the bottom end of the shell, a sleeve is fixedly connected with the bottom of the shell, a movable pipe is movably sleeved on the outer side of the sleeve, a plurality of groups of supporting springs fixedly connected with the other end of the movable pipe and the shell are fixedly connected on the inner side of the upper end of the movable pipe, four groups of first connecting ropes which are arranged in an equal circumference manner are fixedly connected on the outer side of the upper end of the movable pipe, four groups of first sliding chutes which are arranged in an equal circumference manner and are arranged at the bottom of the shell are arranged on the outer side of the sleeve, a first sliding block is movably sleeved inside the second sliding chute, connecting rods which are movably sleeved with the shell are fixedly connected at the middle part of the first sliding block facing one end of the main shaft, the bottom of the first sliding block facing one end of the main shaft is fixedly connected with the first connecting ropes, and four groups of air outlets matched with the first sliding chutes are arranged at the outer side of the middle part of the shell, the bottom of air outlet is provided with the filter screen that cup joints with the casing activity, the other end and the filter screen fixed connection of connecting rod.

Preferably, the bottom of the screw is provided with an inverted cone, a gap exists between the sealing plate and the movable plate,

preferably, the movable plate is provided at a middle portion thereof with a check valve opening toward the sealing plate.

Preferably, the air outlet and the main shaft are both positioned on an extension line of the first sliding chute.

Preferably, the first connecting rope and the second connecting rope are made of inelastic materials.

The invention has the following beneficial effects:

1. through the screw, the fly leaf, the setting of dead lever, through inserting the dead lever inside the fixed tube, then outside screw out, thereby drive the fly leaf and shift up and produce the negative pressure, can fix the polishing wheel in the bottom of rolling disc under the effect of negative pressure and polish, and when the change polishing wheel is taken off to needs, can make the middle part of closing plate bottom move down the time extrusion check valve stem through the precession screw, make the air can get into by the fly leaf, the fixed pipe, in the sealed chamber that the dead lever is constituteed, eliminate the negative pressure effect, make people can directly take off the polishing wheel and change, can accomplish the change to the polishing wheel fast, and the work efficiency is improved.

2. Through the arrangement of the first slider, the movable pipe and the filter screen, because the shell rotates synchronously along with the main shaft, the second slider can move outwards under the action of centrifugal force, not only can the movable pipe be pulled to rise through the second connecting rope, so that a gap exists between the movable pipe and the rotating disc, but also the filter screen can be pulled through the connecting rod, so that the filter screen is superposed with the air outlet, simultaneously, because the main shaft drives the movable impeller to rotate synchronously, the rotary impeller rotates to discharge air in the sleeve from the air outlet, the movable pipe sucks air from the periphery of the polishing wheel, air flow is realized, dust and debris generated in the polishing process of the polishing wheel can be sucked into the sleeve, the dust and debris are collected through the filtering and intercepting of the filter screen, after polishing is finished, the movable pipe can be newly contacted with the rotating disc under the resilience of the supporting spring, and dust leakage in the sleeve is avoided, and can be discharged from the air outlet after the work is finished.

3. Through the setting of second slider, the rope is connected to the second, the fly leaf, because the casing is along with main shaft synchronous revolution, the second slider can move to the outside under the centrifugal force effect, thereby make the second slider overcome reset spring's elasticity pulling fly leaf and shift up, can produce bigger negative pressure at fixed pipe, make the dead lever can not be when the high-speed rotation of throwing aureola, produce the removal along the axis direction of main shaft and lead to connecting pipe and rolling disc separation, ensure that this throwing aureola can normal work.

Drawings

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

FIG. 2 is a schematic cross-sectional view of a structural shell according to the present invention;

FIG. 3 is an enlarged view of the structure B of the present invention;

FIG. 4 is an enlarged schematic view of structure C of the present invention;

FIG. 5 is a schematic cross-sectional view of structure A-A of the present invention;

FIG. 6 is an enlarged view of structure D of the present invention;

fig. 7 is a schematic view of the structural screw of the present invention.

In the figure: 1. a main body; 2. a main shaft; 3. a housing; 4. rotating the disc; 5. a polishing wheel; 6. an impeller; 7. a dust cover; 8. a sleeve; 9. a movable tube; 10. a support spring; 11. a first connecting rope; 12. a first chute; 13. a first slider; 14. a connecting rod; 15. an air outlet; 16. filtering with a screen; 17. fixing the rod; 18. a fixed tube; 19. a screw; 20. a second chute; 21. a second slider; 22. a return spring; 23. a second connecting rope; 24. a sealing plate; 25. a movable plate.

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.

Referring to fig. 1-2 and 4, a small-sized hand-held polishing machine comprises a main body 1, a main shaft 2 is movably sleeved at the bottom of the main body 1, a shell 3 is movably sleeved at the middle part of the main shaft 2, a rotating disc 4 is fixedly connected at the bottom of the main shaft 2, four groups of fixed rods 17 which are arranged in an equal circumference manner are movably sleeved at the side surface of the middle part of the rotating disc 4, a polishing wheel 5 is fixedly connected at the bottom of the fixed rods 17, a fixed pipe 18 is movably sleeved at the upper end of the fixed rods 17, a rubber sealing ring is arranged at the side surface of the upper end of the fixed pipe 18 and forms movable sealing with the side wall of the fixed pipe 18 to ensure that air leakage cannot be caused, the upper end of the fixed pipe 18 is fixedly connected with the shell 3 to enable the shell 3 to rotate along with the rotation of the rotating disc 4, a screw 19 which is in threaded connection with the shell 3 is arranged above the fixed pipe 18, a second chute 20 which is arranged at the side of the screw 19 far away from the main shaft 2 and is arranged at the upper surface of the shell 3, wherein the extension line of one group of the second sliding grooves 20 still passes through the screw 19 and the main shaft 2 on the corresponding side, the second sliding block 21 is movably sleeved in the second sliding groove 20, the second sliding block 21 is made of iron material with larger mass to ensure that enough centrifugal force can be improved, one end of the second sliding block 21 is fixedly connected with a return spring 22, one end of the second sliding block 21 facing the screw 19 is fixedly connected with a second connecting rope 23, the second connecting rope 23 is made of inelastic material, the bottom of the screw 19 is movably sleeved with a sealing plate 24 movably sleeved with the fixed pipe 18, the bottom of the sealing plate 24 is movably sleeved with a movable plate 25 and a sealing plate 24, the movable plates 25 are movably and hermetically connected with the inner wall of the fixed pipe 18, a one-way valve with an opening facing the sealing plate 24 is arranged in the middle of the movable plates 25, and the other end of the second connecting rope 23 sequentially penetrates through the screw 19 and the middle of the sealing plate 24 to be fixedly connected with the middle of the upper end of the movable plates 25;

referring to fig. 2 and 3, an impeller 6 fixedly connected with a spindle 2 is arranged above a rotating disc 4, a dust cover 7 is fixedly connected with the edge of the bottom end of a shell 3, the outer edge of the dust cover 7 is larger than the outer edge of a polishing wheel 5, a sleeve 8 is fixedly connected with the bottom of the shell 3, a movable pipe 9 is movably sleeved on the outer side of the sleeve 8, a plurality of groups of supporting springs 10 with the other ends fixedly connected with the shell 3 are fixedly connected with the inner side of the upper end of the movable pipe 9, four groups of first connecting ropes 11 which are arranged in an equal circumference manner are fixedly connected with the outer side of the upper end of the movable pipe 9, four groups of first chutes 12 which are arranged at the bottom of the shell 3 in an equal circumference manner are arranged on the outer side of the sleeve 8, the first chutes 12 are positioned at the bottom of the shell 3 and are convenient to process, first sliders 13 are movably sleeved inside the first chutes 12, connecting rods 14 which are movably sleeved with the shell 3 are fixedly connected with the first sliders 13 towards the middle part of one end of the spindle 2, first connecting rope 11 is made for no elastic material, and first slider 13 towards the bottom and first connecting rope 11 fixed connection of 2 one ends of main shaft, and four sets of air outlets 15 with first spout 12 looks adaptation are seted up in the outside at casing 3 middle part, and the bottom of air outlet 15 is provided with the filter screen 16 that cup joints with casing 3 activity, the other end and the filter screen 16 fixed connection of connecting rod 14.

Referring to fig. 4 and 7, the bottom of the screw 19 is provided with an inverted cone, so that the sealing plate 24 does not rotate along with the rotation of the screw 19 in the process of rotating the screw 19, and a gap exists between the sealing plate 24 and the movable plate 25, so that the second slider 21 moves outward under the action of centrifugal force in the process of driving the polishing wheel 5 and the housing 3 to rotate by the spindle 2, and the second slider 21 pulls the movable plate 25 to move upward against the elastic force of the return spring 22, and a greater negative pressure can be generated in the fixed tube 18, so that the fixed rod 17 does not move along the axial direction of the spindle 2 to separate the fixed rod 17 from the rotating disc 4 when the polishing wheel 5 rotates at a high speed.

Referring to fig. 3, 5 and 6, the air outlet 15 and the spindle 2 are both located on an extension line of the first chute 12, the first connecting rope 11 is inelastic, when the spindle 2 rotates to polish a workpiece, the housing 3 rotates to cause the second slider 21 to move outward under the action of centrifugal force, not only the movable tube 9 is pulled upward by the second connecting rope 23 to form a gap between the movable tube 9 and the rotating disc 4, but also the filter screen 16 is pulled by the connecting rod 14 to coincide the filter screen 16 with the air outlet 15, meanwhile, the spindle 2 drives the impeller 6 to rotate synchronously, the rotary impeller 6 rotates to discharge air inside the sleeve 8 from the air outlet 15, the movable tube 9 sucks air from the periphery of the polishing wheel 5 to realize air flow, dust and debris generated in the polishing process of the polishing wheel 5 are sucked into the sleeve 8 and then are filtered and trapped by the filter screen 16, accomplish dust, clastic collection, after the polishing, movable tube 9 can contact with rolling disc 4 again under supporting spring 10's resilience to avoid the inside dust of sleeve pipe 8 to reveal, and can discharge from air outlet 15 after the work is accomplished.

Before polishing, a fixed rod 17 fixedly connected with the polishing wheel 5 is inserted into a fixed pipe 18, and then a screw 19 is screwed outwards, so that a sealing plate 24 and a movable plate 25 are driven to move upwards to generate negative pressure, the polishing wheel 5 can be fixed at the bottom of a rotating disc 4 under the action of the negative pressure, and then polishing work can be carried out;

in the polishing process, as the housing 3 synchronously rotates along with the spindle 2, the second slider 21 moves outwards under the action of centrifugal force, so that the second slider 21 overcomes the elastic force of the return spring 22 to pull the movable plate 25 to move upwards, a larger negative pressure can be generated in the fixed pipe 18, the fixed rod 17 cannot move along the axial direction of the spindle 2 to separate the fixed rod 17 from the rotating disc 4 when the polishing wheel 5 rotates at a high speed, and the polishing wheel can normally work; meanwhile, the second slider 21 can move outwards under the action of centrifugal force, the movable tube 9 can be pulled to rise through the second connecting rope 23, a gap exists between the movable tube 9 and the rotating disc 4, the filter screen 16 can be pulled through the connecting rod 14, the filter screen 16 is overlapped with the air outlet 15, meanwhile, the impeller 6 is driven by the spindle 2 to rotate synchronously, the rotary impeller 6 rotates to discharge air in the sleeve 8 from the air outlet 15, the movable tube 9 sucks air from the periphery of the polishing wheel 5, air flowing is achieved, dust and debris generated in the polishing process of the polishing wheel 5 can be sucked into the sleeve 8, and the dust and debris are collected through filtering and intercepting of the filter screen 16;

after the polishing, movable tube 9 can contact with rolling disc 4 again under supporting spring 10's resilience, thereby avoid 8 inside dust of sleeve pipe to reveal, and can discharge from air outlet 15 after work is accomplished, and can make the middle part of closing plate 24 bottom move down through precession screw 19 extrusion check valve pole, make the air can get into by fly leaf 25, fixed pipe 18, in the seal chamber that dead lever 17 constitutes, eliminate the negative pressure effect, make people can directly take off polishing wheel 5 and change, can accomplish the change to polishing wheel 5 fast, and the work efficiency is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.