A polishing device for the inner peripheral surface of a stamping middle frame of a handheld device

Abstract

The present invention discloses a polishing device for the inner peripheral surface of a stamping middle frame of a handheld device, which includes a main housing. Polishing blades are evenly installed on the other side of the main housing. It also includes a pumping and suction pump installed at the rear side of the main housing. A first motor is installed on one inner wall of the main housing, and the output shaft of the first motor is connected to the pumping and suction pump. A polishing motor is arranged inside the main housing, and the output shaft of the polishing motor is connected to a polishing blade shaft. The polishing blades are installed outside the polishing blade shaft. An inlet pipe and a drain pipe are respectively arranged at two places inside the main housing. An inlet hole is opened at the bottom surface of the front part of the main housing close to it, and a drain hole is opened at the bottom surface of the rear part of the main housing close to it. The inlet hole is adjacent to the opening of the inlet pipe, and the drain hole is adjacent to the opening of the drain pipe. The output end of the pumping and suction pump is connected to the inlet pipe and the drain pipe in a through connection. The present invention has the characteristics of being adjustable, time-saving and labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing equipment, and particularly to a polishing device for the inner peripheral surface of a stamping middle frame of a handheld device. Background Art

[0002] A handheld polishing device is a common workpiece processing equipment, which has the functions of being portable and easy to use. During the processing of a stamping middle frame, it is necessary to polish its inner wall to a certain extent to maintain the smoothness and flatness of its surface.

[0003] The existing handheld polishing devices cannot adjust the size of the polishing blades according to the actual situation. In the actual use process, due to the various models of stamping middle frames, polishing blades of different sizes are required, which results in high production costs and is rather troublesome, time-consuming and laborious to replace. Therefore, it is necessary to design a polishing device for the inner peripheral surface of a stamping middle frame of a handheld device that can be adjusted and is time-saving and labor-saving. Summary of the Invention

[0004] The purpose of the present invention is to provide a polishing device for the inner peripheral surface of a stamping middle frame of a handheld device to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A polishing device for the inner peripheral surface of a stamping middle frame of a handheld device, including a main housing, on the other side of which polishing blades are evenly installed. It also includes a pumping and suction pump installed at the rear of the main housing, and a first motor is installed on one inner wall of the main housing, and the output shaft of the first motor is connected to the pumping and suction pump.

[0006] Further, a polishing motor is arranged inside the main housing, the output shaft of the polishing motor is connected to a polishing blade shaft, and the polishing blades are installed outside the polishing blade shaft.

[0007] Further, a liquid inlet pipe and a liquid discharge pipe are respectively arranged at two places inside the main housing. An inlet hole is opened at the front bottom surface of the main housing close to it, and a discharge hole is opened at the bottom surface of the main housing close to the rear. The inlet hole is adjacent to the opening of the liquid inlet pipe, and the discharge hole is adjacent to the opening of the liquid discharge pipe. The output end of the pumping and suction pump is connected to the liquid inlet pipe and the liquid discharge pipe in a through manner, and the pumping and suction pump is a two-way Roots pump.

[0008] Further, an intermittent liquid discharging device is arranged inside the main housing. The intermittent liquid discharging device includes a second motor installed inside the main housing. The output shaft of the second motor is connected to a rotating shaft. A parallelogram block is sleeved outside the rotating shaft. A sliding contact part is arranged on the outer peripheral surface of the parallelogram block. A connecting arm is slidably hinged to the inner wall of the sliding contact part. One end of the connecting arm is hinged with a small blocking block. The small blocking block is in sliding contact and sealing with the inner wall of the liquid discharging hole. A hinge shaft is correspondingly installed on the inner wall of the main housing. A square hole is formed through one side of the hinge shaft, and the connecting arm slidably passes through the square hole.

[0009] Further, a crank connecting rod is arranged at one end of the rotating shaft. A mounting seat is installed on the inner wall of the main housing. The mounting seat is rotatably connected to the rotating shaft. The bottom end of the rod part of the crank connecting rod is hinged with a slider. A large blocking block is connected to the bottom of the slider. The large blocking block is in sliding contact and sealing with the inner wall of the liquid inlet hole. Screening plates are correspondingly installed on both sides of the large blocking block. Screening holes are evenly formed on one side of the screening plates. Filter meshes are rotatably arranged on the inner walls of the screening holes.

[0010] Further, a polishing assembly is arranged outside the polishing blade shaft. The polishing assembly includes a protection housing fixedly installed at the end of the polishing blade shaft. A third motor is installed on the inner wall of the protection housing. A power meshing wheel is sleeved outside the output shaft of the third motor. A fixing frame is installed on one side of the protection housing. Mounting rods are evenly rotatably arranged inside the fixing frame. A first worm gear is sleeved inside the mounting rods. The mounting rods are fixedly connected to the polishing blades by welding. Worms are evenly rotatably installed on one side of the fixing frame. One end of a worm is sleeved with a meshing wheel one. The meshing wheel one meshes with the power meshing wheel. The first worm gear meshes with the worm.

[0011] Further, the polishing assembly further includes a second worm gear sleeved on the mounting rod. The number of the worms is two, and the two worms respectively mesh with the second worm gear and the first worm gear. A meshing wheel two is sleeved on one end of the other worm. The meshing wheel two meshes with the meshing wheel one. An angle adjusting device is arranged at one end of the mounting rod.

[0012] Further, a hand-held part is arranged on one side of the main housing.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention,

[0014] (1) By arranging a polishing assembly between the polishing blade and its mounting rod, the three polishing blades are retracted or unfolded when the sizes of the middle frames are different, which is applicable to different sizes of middle frames;

[0015] (2) By setting components such as worm wheels and worm shafts, anti-backlash self-locking can be achieved after the polishing blade is deployed or retracted. At this time, the motor load is close to zero, and the shape of the polishing blade can be stably maintained after deployment or retraction, reducing motor energy consumption and having a compact structure;

[0016] (5) Through the redundant design of driving one polishing blade by two sets of worm wheels and worm shafts, after one set of worm wheels and worm shafts fails, rotating the worm wheel by a certain angle can avoid the failed teeth on the worm wheel, and a complete multi-group mechanism can be formed again without replacing the worm wheel, having a long service life;

[0017] (6) By opening holes in the front part of the main housing, the coolant inside the middle frame can be sucked out for filtration, and by opening holes in the rear part, the coolant can be discharged into the middle frame to reduce the temperature during polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the main housing of the present invention;

[0021] Figure 3 is a schematic diagram of the overall structure of the polishing assembly of the present invention;

[0022] Figure 4 is a schematic diagram of the internal structure of the polishing assembly of the present invention;

[0023] Figure 5 is a schematic diagram of the installation of the second set of worm wheels and worm shafts of the present invention;

[0024] Figure 6 is a schematic diagram of the internal structure of the main housing of the present invention;

[0025] Figure 7 is of the present invention Figure 6 enlarged schematic diagram of area A;

[0026] Figure 8 is of the present invention Figure 6 enlarged schematic diagram of area B;

[0027] In the figure: 1, main housing; 2, polishing assembly; 3, intermittent liquid discharging device; 11, handheld part; 13, liquid inlet hole; 14, liquid discharge hole; 21, polishing blade; 22, polishing blade shaft; 23, abutting and positioning part; 24, protective housing; 241, third motor; 242, first meshing wheel; 2421, second meshing wheel; 243, power meshing wheel; 244, worm; 25, fixing frame; 251, mounting rod; 26, first worm gear; 261, second worm gear; 31, large blocking block; 32, small blocking block; 321, connecting arm; 3211, hinge shaft; 33, parallelogram block; 331, sliding contact part; 34, mounting seat; 35, screening plate; 351, screening hole; 36, crank connecting rod; 37, slider; 38, second motor; 381, rotating shaft. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1-8 , the present invention provides a technical solution: a polishing device for the inner peripheral surface of a stamping middle frame of a handheld device, including a main housing 1, polishing blades 21 are uniformly installed on the other side of the main housing 1, and a pumping pump 411 is installed at the rear side of the main housing. A first motor 41 is installed on one inner wall of the main housing 1, and the output shaft of the first motor 41 is connected to the pumping pump 411. The polishing blades 21 are used to polish the inner peripheral surface of the middle frame when the main housing 1 moves forward. The pumping pump 411 is used to allow coolant to enter and exit the main housing 1, and the polishing blade 12 is used to polish the workpiece by rotation;

[0030] A polishing motor is arranged inside the main housing 1, the output shaft of the polishing motor is connected to a polishing blade shaft 22, and the polishing blade 21 is installed outside the polishing blade shaft 22. The polishing motor is started to drive the polishing blade shaft 22 to rotate for polishing;

[0031] Inside the main housing 1, a liquid inlet pipe and a liquid discharge pipe are respectively arranged at two places. An inlet hole 13 is opened on the bottom surface of the front part of the main housing 1 close to it, and a discharge hole 14 is opened on the bottom surface of the rear part of the main housing 1 close to it. The inlet hole 13 is adjacent to the opening of the liquid inlet pipe, and the discharge hole 14 is adjacent to the opening of the liquid discharge pipe. The output end of the pumping pump 411 is connected to the liquid inlet pipe and the liquid discharge pipe in a through connection. The pumping pump 411 is a two-way Roots pump. When the pumping pump 411 in the main housing 1 works in the reverse direction, the coolant enters the inlet hole 13 from the outside of the main housing 1, and the coolant in the main housing 1 passes through the discharge pipe 422 and exits from the discharge hole 14, which is convenient for realizing the access and filtered discharge of the coolant of the engine;

[0032] An intermittent liquid discharge device 3 is arranged inside the main housing 1. The intermittent liquid discharge device 3 includes a second motor 38 installed inside the main housing 1. The output shaft of the second motor 38 is connected with a rotating shaft 381. A parallelogram block 33 is sleeved outside the rotating shaft 381. A sliding contact part 331 is opened on the outer peripheral surface of the parallelogram block 33. A connecting arm 321 is slidably hinged to the inner wall of the sliding contact part 331. One end of the connecting arm 321 is hinged with a small blocking block 32. The small blocking block 32 is in sliding contact and sealing with the inner wall of the discharge hole 14. A hinge shaft 3211 is correspondingly installed on the inner wall of the main housing 1. A square hole is opened through one side of the hinge shaft 3211, and the connecting arm 321 slides through the square hole. When the coolant is introduced, the second motor 38 drives the parallelogram block 33 to rotate. When the parallelogram block 33 rotates to the horizontal position, it pushes the connecting arm 321 and the small blocking block 32 to seal the discharge hole 14. When the parallelogram block 33 rotates to the vertical position, the connecting arm 321 makes the small blocking block 32 unblock the discharge hole 14, so that the second motor 38 can regularly discharge the liquid and adapt to the polishing working condition;

[0033] One end of the rotating shaft 381 is provided with a crank connecting rod 36. A mounting seat 34 is installed on the inner wall of the main housing 1. The mounting seat 34 is rotatably connected with the rotating shaft 381. The bottom end of the rod part of the crank connecting rod 36 is hinged with a slider 37. The bottom of the slider 37 is connected with a large blocking block 31. The large blocking block 31 is in sliding contact and sealing with the inner wall of the inlet hole 13. Screening plates 35 are correspondingly installed on both sides of the large blocking block 31. Screening holes 351 are evenly opened on one side of the screening plate 35. A filter net is rotatably arranged on the inner wall of the screening hole 351. When the coolant is introduced, the rotating shaft 381 drives the crank connecting rod 36 to move, so that the slider 37 drives the large blocking block 31 to move up and down. When moving to the upper part, the inlet hole 13 can be opened to realize liquid inlet. When moving to the lower part, the inlet hole 13 can be sealed, so that the main housing 1 is in a sealed state during operation. When rotating, the up and down movement of the screening plate 35 can form a coolant convection in the main housing. The coolant passes through the filter net of the screening hole 351, and the waste liquid passes through the screening hole 241 and enters the lower part of the screening plate 35. When the main coolant is introduced, the coolant inside the main housing can circulate, which is convenient for discharging the waste liquid inside the main housing and has a good heat dissipation effect;

[0034] A polishing assembly 2 is provided outside the polishing blade shaft 22. The polishing assembly 2 includes a protective housing 24 fixedly installed at the end of the polishing blade shaft 22. A third motor 241 is installed on the inner wall of the protective housing 24. A power meshing wheel 243 is sleeved outside the output shaft of the third motor 241. A fixed frame 25 is installed on one side of the protective housing 24. Mounting rods 251 are evenly and rotatably arranged inside the fixed frame 25. A first worm gear 26 is sleeved inside the mounting rod 251. The mounting rod 251 and the polishing blade 21 are fixed by welding. Worms 244 are evenly and rotatably installed on one side of the fixed frame 25. One end of the worm 244 is sleeved with a first meshing wheel 242. The first meshing wheel 242 meshes with the power meshing wheel 243. The first worm gear 26 meshes with the worm 244. When the polishing blade 21 is unfolded or retracted, the third motor 241 drives the power meshing wheel 243 and the first meshing wheel 242 to rotate. The rotation of the worm 244 drives the mounting rod 251 and the first worm gear 26 to rotate. When the middle frame sizes are different, the three polishing blades 21 are unfolded or retracted. When polishing, the polishing blade 21 is opened to the working state. By rotating the polishing blade 12, the polishing speed is increased. It is possible to achieve anti-travel self-locking after the polishing blade 21 is unfolded or retracted. At this time, the load of the third motor 241 is close to zero. After unfolding or retracting, the shape of the polishing blade 12 can be stably maintained, reducing the motor energy consumption, and the structure is compact;

[0035] The polishing assembly 2 further includes a second worm gear 261 sleeved on the mounting rod 251. The number of worms 244 is two, and the two worms 244 mesh with the second worm gear 261 and the first worm gear 26 respectively. One end of the other worm 244 is sleeved with a second meshing wheel 2421. The second meshing wheel 2421 meshes with the first meshing wheel 242. An angle adjustment device is provided at one end of the mounting rod 251. By adding a pair of second worm gears 261, the first meshing wheel 242 drives the second meshing wheel 2421 to rotate, thereby driving the second worm gear 261 to rotate. The redundant design of two sets of worm gears driving one polishing blade 21 ensures that the equipment can still operate continuously after one set of worm gears fails, with good safety performance. And after one set of worm gears fails, rotating the worm gear by a certain angle can avoid the failed teeth on the worm gear, and a complete multi-group mechanism is formed again without replacing the worm gear, with a long service life;

[0036] As Figure 1 , a hand-held part 11 is provided on one side of the main housing 1, and manual position adjustment is carried out by holding the hand-held part 11 with the hand.

[0037] Embodiment: When using this polishing device, the intermittent liquid discharging device 3 blocks the liquid discharging hole 14 and the liquid inlet hole 13 to prevent moisture from entering, and the polishing blade 21 of the polishing assembly 2 is retracted. Then, the power device 4 drives the pumping pump 411 to rotate. When ready to rotate, the power device 4 drives the polishing blade 21 to rotate, cooperating with the rotation of the polishing blade 12. The intermittent liquid discharging device 3 is used to keep the liquid from leaking into the main housing 1 underwater and can supply the coolant during processing.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A polishing device for the inner peripheral surface of a stamping middle frame of a handheld device, comprising a main housing (1), characterized in that: On the other side of the main housing (1), polishing blades (21) are evenly installed. A pumping pump (411) is also included and installed at the rear side of the main housing. On one inner wall of the main housing (1), a first motor (41) is installed, and the output shaft of the first motor (41) is connected to the pumping pump (411); Inside the main housing (1), a polishing motor is provided. The output shaft of the polishing motor is connected to a polishing blade shaft (22), and the polishing blades (21) are installed outside the polishing blade shaft (22); Inside the main housing (1), an intermittent liquid discharging device (3) is provided. The intermittent liquid discharging device (3) includes a second motor (38) installed inside the main housing (1). The output shaft of the second motor (38) is connected to a rotating shaft (381). An outer periphery of the rotating shaft (381) is sleeved with a parallelogram block (33). A sliding contact part (331) is provided on an outer peripheral surface of the parallelogram block (33). A connecting arm (321) is slidably hinged to an inner wall of the sliding contact part (331). One end of the connecting arm (321) is hinged to a small blocking block (32). The small blocking block (32) is in sliding contact and sealing with an inner wall of a liquid discharging hole (14). A hinge shaft (3211) is correspondingly installed on an inner wall of the main housing (1). A square hole is provided through one side of the hinge shaft (3211), and the connecting arm (321) slidably passes through the square hole; One end of the rotating shaft (381) is provided with a crank connecting rod (36). A mounting seat (34) is installed on an inner wall of the main housing (1). The mounting seat (34) is rotatably connected to the rotating shaft (381). A bottom end of a rod part of the crank connecting rod (36) is hinged to a slider (37). A bottom of the slider (37) is connected to a large blocking block (31). The large blocking block (31) is in sliding contact and sealing with an inner wall of a liquid inlet hole (13). Screening plates (35) are correspondingly installed on both sides of the large blocking block (31). Screening holes (351) are evenly provided on one side of the screening plates (35). A filter screen is rotatably provided on an inner wall of the screening holes (351); An outer part of the polishing blade shaft (22) is provided with a polishing assembly (2). The polishing assembly (2) includes a protective housing (24) fixedly installed at an end of the polishing blade shaft (22). A third motor (241) is installed on an inner wall of the protective housing (24). A power meshing wheel (243) is sleeved on an output shaft of the third motor (241). A fixing frame (25) is installed on one side of the protective housing (24). Inside the fixing frame (25), mounting rods (251) are evenly rotatably provided. A first worm gear (26) is sleeved inside the mounting rods (251). The mounting rods (251) are fixedly connected to the polishing blades (21) by welding. Worms (244) are evenly rotatably installed on one side of the fixing frame (25). A meshing wheel one (242) is sleeved on one end of the worm (244). The meshing wheel one (242) is meshed with the power meshing wheel (243). The first worm gear (26) is meshed with the worm (244).

2. The polishing device for the inner peripheral surface of the stamping middle frame of a handheld device according to claim 1, wherein: Inside the main housing (1), a liquid inlet pipe and a liquid discharge pipe are respectively arranged at two places. An inlet hole (13) is formed in the bottom surface of the front part of the main housing (1) close to [a certain part], and a discharge hole (14) is formed in the bottom surface of the rear part of the main housing (1). The inlet hole (13) is adjacent to the opening of the liquid inlet pipe, and the discharge hole (14) is adjacent to the opening of the liquid discharge pipe. The output end of the pumping pump (411) is connected to the liquid inlet pipe and the liquid discharge pipe in a through manner, and the pumping pump (411) is a two-way Roots pump.

3. The polishing device for the inner peripheral surface of the stamping middle frame of a handheld device according to claim 1, wherein: The polishing assembly (2) further includes a second worm gear (261) sleeved on the mounting rod (251). The number of the worm shafts (244) is two, and the two worm shafts (244) are respectively meshed with the second worm gear (261) and the first worm gear (26). One end of the other worm shaft (244) is sleeved with a second meshing wheel (2421), and the second meshing wheel (2421) is meshed with the first meshing wheel (242). An angle adjusting device is arranged at one end of the mounting rod (251).

4. A polishing device for the inner peripheral surface of a stamping middle frame of a handheld device according to claim 1, characterized in that: A hand-held part (11) is arranged on one side of the main housing (1).

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