WO2021159730A1 - Ponceuse à mastic - Google Patents

Ponceuse à mastic Download PDF

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Publication number
WO2021159730A1
WO2021159730A1 PCT/CN2020/123253 CN2020123253W WO2021159730A1 WO 2021159730 A1 WO2021159730 A1 WO 2021159730A1 CN 2020123253 W CN2020123253 W CN 2020123253W WO 2021159730 A1 WO2021159730 A1 WO 2021159730A1
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WO
WIPO (PCT)
Prior art keywords
shaft
putty
floating
floating shaft
dust cover
Prior art date
Application number
PCT/CN2020/123253
Other languages
English (en)
Chinese (zh)
Inventor
张国荣
李鑫骏腾
张鹏
郭双发
林洁纯
Original Assignee
广东博智林机器人有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东博智林机器人有限公司 filed Critical 广东博智林机器人有限公司
Publication of WO2021159730A1 publication Critical patent/WO2021159730A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
    • B24B49/165—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load for grinding tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/16—Implements for after-treatment of plaster or the like before it has hardened or dried, e.g. smoothing-tools, profile trowels

Definitions

  • This application relates to the technical field of building construction equipment, specifically, to a putty polisher.
  • Wall putty construction is an important part of the decoration process. Usually, the wall needs to be polished before scraping the putty on the wall. For the construction of indoor wall and ceiling decoration, the requirements for the flatness and smoothness of the wall are getting higher and higher, and then the performance of the grinding construction equipment is required to be higher and higher, which can better meet the requirements of the construction process.
  • Wall putty polishing machine is a common electric tool in building construction equipment technology. The existing equipment has improved the construction efficiency to a certain extent and realized manual semi-automation or machine automation. However, the existing equipment has the following defects: Dust accumulation will increase frictional resistance with use and reduce the service life of the power transmission shaft.
  • the purpose of this application is to provide a putty sander, which can avoid dust accumulation on the floating shaft, guarantee the good usability of the floating shaft, improve the performance of the sanding device, and improve the sanding quality.
  • the putty polisher includes a power output device, a main shaft, a floating shaft, a polishing execution end, a dust cover and a rotating blade; the floating shaft, rotating blades and the polishing execution end are all located in the dust cover, and the main shaft and Transmission connection of the power output device.
  • One end of the main shaft extends into the dust cover and is floating connected to one end of the floating shaft.
  • the polished execution end is installed on the other end of the floating shaft; the rotating blade is installed on the floating shaft and is used to follow the floating shaft.
  • Figure 1 is a cross-sectional view of a putty sander provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of the offset transmission layout structure of the putty sander provided by the embodiment of the application;
  • Figure 3 is a schematic partial cross-sectional view of Figure 2;
  • FIG. 4 is a front view of the protective cover body of the putty sander provided by the embodiment of the application;
  • FIG. 5 is a top view of the protective cover body of the putty sander provided by the embodiment of the application;
  • Figure 6 is a left view of the protective cover body of the putty sander provided by the embodiment of the application.
  • FIG. 7 is an isometric view of the protective cover body of the putty sander provided by the embodiment of the application.
  • Fig. 8 is a schematic structural diagram of a rotating blade of a putty sander provided by an embodiment of the application;
  • Fig. 9 is a track diagram of a rotating blade of a putty sander provided by an embodiment of the application.
  • FIG. 10 is a diagram of the positional relationship between the rotating blade and the floating shaft of the putty sander provided by the embodiment of the application;
  • FIG. 11 is a schematic diagram of the layout of the detection unit of the putty sander provided by an embodiment of the application.
  • Fig. 12 is a schematic diagram of a closed-loop control flow for the construction of a putty sander polishing construction detection provided by an embodiment of the application.
  • orientation or positional relationship indicated by the terms “inner” and “outer” are based on the orientation or positional relationship shown in the drawings, or are usually placed when the application product is used.
  • the orientation or positional relationship is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the application.
  • first”, “second”, etc. are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
  • the putty polisher 100 includes: a power output device 10, a main shaft 20, a floating shaft 30, a polishing execution end 40, a dust cover 50 and a rotating blade 60.
  • the dust cover 50 is used to cover the polishing surface to prevent the putty dust from splashing;
  • the floating shaft 30, the rotating blade 60 and the polishing execution end 40 are all located in the dust cover 50, and the main shaft 20 and the power output device 10 are transmitted Connection; one end of the main shaft 20 extends into the dust cover 50, and is connected to one end of the floating shaft 30 in a floating connection, the polishing execution end 40 is installed on the other end of the floating shaft 30, and the power output device 10 provides polishing power to drive the polishing execution end 40 Polish the walls.
  • the rotating blade 60 is installed on the floating shaft 30 and can follow the floating shaft 30 to rotate; when following the floating shaft 30 to rotate, the rotating blade 60 can generate a radial spiral airflow, thereby blowing the putty dust away from the floating shaft 30.
  • the dust cover 50 is installed on the polishing execution end 40 to prevent the dust generated by the polishing from splashing; the rotating blade 60 is arranged in the dust cover 50, and the rotating blade 60 rotates with the floating shaft 30 At the same time, the radial spiral airflow (external expansion airflow) can be formed, so that the putty dust is not easy to fall on the floating shaft 30, so that the floating shaft 30 has a good dust removal function, ensuring the good usability of the floating shaft 30, and improving the polishing device ( That is, the performance of the putty polisher 100) of the present application improves the polishing quality.
  • the power output device 10 includes a power frame 11, an offset partition 12, an inner support partition 13, and a power motor 14.
  • the power frame 11 is a rectangular frame.
  • the power frame 11 includes an upper plate 111, a lower plate 112, a front plate 116, a rear plate (not shown in the figure), a left side plate 113 and a right side plate 114, an upper plate 111 and a lower plate 112.
  • the front plate 116, the rear plate, the left side plate 113 and the right side plate 114 enclose a hollow accommodating space 18.
  • the offset partition 12 is arranged in the accommodation space 18 of the power frame 11, and the accommodation space 18 is divided into an upper space 181 and a lower space 182 (a gap is left between the left end of the offset partition 12 and the left side plate 113 ), the power motor 14 is installed in the upper space 181.
  • the inner support partition 13 is located in the accommodating space 18 and is connected to the left end of the offset partition 12.
  • the inner support partition 13 divides the output end space of the power motor 14, and the left space of the inner support partition 13 is
  • the transmission space 183 is used for setting the transmission mechanism.
  • front-rear direction refers to the direction perpendicular to the plane shown in FIG. 1.
  • a mounting flange 115 is connected to the right side plate 114 for connection with other components.
  • the main shaft 20 is arranged in parallel with the output shaft of the power output device 10 (that is, the output shaft of the power motor 14), and the output end of the power output device 10 and the main shaft 20 are drivingly connected by a belt transmission mechanism 150, thereby realizing an offset transmission structure, The vibration interference of the power output device 10 caused by the external vibration caused by the grinding operation is reduced.
  • the belt transmission mechanism 150 is located in the transmission space 183 of the power frame 11; the main shaft 20 is located in the transmission space 183, the main shaft 20 is located below the power motor 14, one end of the main shaft 20 penetrates the left side plate 113, and the main shaft 20 and the left side plate 113 pass
  • the outer bearing 23 (see FIG. 3) is rotationally matched, the other end of the main shaft 20 and the inner support partition 13 are rotationally matched through the inner bearing 24, and the main shaft 20 can rotate relative to the power frame 11.
  • the belt transmission mechanism 150 includes an upper pulley 151, a lower pulley 152 and a belt 153.
  • the upper pulley 151 is mounted on the output shaft of the power motor 14 and can follow the output shaft of the power motor 14 to rotate;
  • the pulley 152 is sleeved on the main shaft 20, and can follow the main shaft 20 to rotate relative to the power frame 11;
  • the belt 153 is sleeved on the upper pulley 151 and the lower pulley 152, and the lower pulley 152 is arranged between the inner support partition 13
  • the shaft sleeve 16 is used for supporting and positioning in a horizontal direction, that is, realizing the positioning of the lower pulley 152.
  • the transmission layout is shown in FIG. 2. After the power is transmitted to the lower pulley 152 via the upper pulley 151 and the belt 153 via the power motor 14, the lower pulley 152 positions the main shaft 20 to realize the rotation of the main shaft 20.
  • the floating shaft 30 is inserted inside the main shaft 20, and the floating shaft 30 is installed coaxially with the inner circle of the main shaft 20.
  • a stepped circular hole 21 is provided inside the main shaft 20 to limit and guide the floating shaft 30; the floating shaft 30 and the main shaft 20 are connected by a key to realize the transmission of radial torque between the main shaft 20 and the floating shaft 30, that is, to realize the power of the main shaft 20 It is transmitted to the floating shaft 30, and the floating shaft 30 drives the polishing execution end 40 to realize the polishing function.
  • a spring 22 is provided between the main shaft 20 and the floating shaft 30, the spring 22 is set in the stepped circular hole 21, the spring 22 is supported between the floating shaft 30 and the main shaft 20, and the floating shaft is realized by the spring 22
  • the floating cooperation between 30 and the main shaft 20 ensures that the floating shaft 30 and the main shaft 20 can float flexibly.
  • the spring 22 exerts a reaction force on the floating shaft 30, so that the floating shaft 30 drives the polishing execution end 40 to fit the polishing surface; at the same time, the spring 22 also acts on the floating shaft 30
  • the reset driving force is applied to drive the floating shaft 30 to reset.
  • the putty sander 100 may also include a copper sleeve 17, a copper sleeve 17 is provided in the stepped circular hole 21, and the floating shaft 30 penetrates the copper sleeve.
  • the radial vibration of the floating shaft 30 acts on the copper sleeve 17, and the copper sleeve 17 absorbs the vibration, thereby reducing the radial vibration of the main shaft 20.
  • the offset transmission structure has two structural transmission treatments for the vibration interference: first, the floating of the floating shaft 30 itself reduces the vibration; second, the pulley (the upper pulley 151 and the lower pulley 152)
  • the power is vertically misaligned to realize that the vibration cannot be transmitted in the axial direction, leaving only the radial vibration driven by the belt 153.
  • This vibration can be weakened by adjusting the pre-tensioning of the belt 153.
  • the external vibration caused by the grinding operation is transmitted to the floating shaft 30, and the floating shaft 30 passes through the transmission path, and finally, the vibration interference that reacts to the power motor 14 is extremely small, and then the problem of the impact of the grinding vibration on the power unit is solved.
  • the dust cover 50 is an important structure for suppressing dust from the grinding operation, and its main function is to restrict the ground putty dust from being collected in a fixed area space, that is, the inner cavity of the dust cover 50.
  • the dust cover 50 includes a dust cover body 51 and a dust retainer ring 52.
  • the dust retainer ring 52 is installed at the open end of the dust cover body 51 and is arranged along the circumference of the dust cover body 51.
  • the dust cover body 51 is connected to the power frame 11, and when in use, the dust cover body 51 and the power frame 11 are relatively stationary.
  • the dust retaining ring 52 facilitates close contact with the polished surface, and the dust retaining ring 52 cooperates with the dust cover body 51 to suppress dust during the polishing operation.
  • the diameter of the open end of the dust cover body 51 is smaller than the diameter of the closed end, so as to realize the collection of putty dust.
  • the dust cover body 51 is provided with a dust exhaust port 53, the dust exhaust port 53 is provided at the closed end of the dust cover body 51, and the dust exhaust port 53 protrudes toward the outside of the dust cover body 51.
  • the dust outlet 53 is provided with upper and lower edge closing contours in the front view, and the outer eight-character closing opening has a small profile section angle; as shown in Figure 5, the dust outlet 53 has left and right edge closing contours in the top view. , The outer horoscope is closed, and the angle of its profile section is too large.
  • the dust exhaust port 53 includes a coaxially arranged gradation section 531 and an equal diameter section 532. As shown in FIG.
  • the large end of the gradation section 531 is elliptical and connected to the inner end surface of the dust cover body 51
  • the large end of the transition section 531 is tangent to the lower contour boundary of the inner end surface of the dust cover body 51
  • the small end of the transition section 531 is circular and connected to the equal diameter section 532, as shown in FIG. 6, the equal diameter section
  • the cross section of 532 is circular. That is, the dust exhaust port 53 protrudes outward from the oval port 533 on the inner end surface of the dust cover body 51 and is closed by a circular port 534.
  • the area of the circular port 534 is smaller than the area of the oval port 533.
  • the elliptical opening 533 (the large end of the gradual section 531 of the dust outlet 53) is tangent to the lower contour boundary of the inner end surface of the dust cover body 51.
  • the structural feature of the dust exhaust port 53 when connected with a dust suction device, facilitates the formation of a cone-shaped flowing airflow at the bottom end of the dust cover body 51, matching the lower arc dust drop zone of the dust cover body 51, and the long side of the oval mouth 533 In the left and right directions shown in the figure, it conforms to the integrated characteristics of putty dust.
  • the lower port of the dust cover body 51 realizes the smooth dust exhaust effect of putty dust under the suction force of the air pipe of the dust suction device, which is compared with the unimproved dust exhaust port structure.
  • the dust exhaust port 53 of the present application has a great dust extraction effect and meets the characteristics of aerodynamics and dust falling.
  • the floating shaft 30, the rotating blade 60 and the polishing execution end 40 are all located in the dust cover 50, and one end of the main shaft 20 extends into the inner cavity of the dust cover body 51 and is connected to the floating shaft 30.
  • the rotating blade 60 includes a base 61 and a plurality of blades 62.
  • the base 61 is mounted on the floating shaft 30, and the multiple blades 62 are connected to the base 61.
  • the projection of each blade 62 on a plane perpendicular to the floating shaft 30 It is line-shaped.
  • the base body 61 has a triangular shape, each corner position is provided with a rod hole 612, the axis of the rod hole 612 is perpendicular to the base body 61; the middle position of the base body 61 is provided with a shaft hole 611, the floating shaft 30 passes through the shaft hole 611, and the rotating blade 60 and the floating shaft 30 are coaxially installed and positioned.
  • a plurality of blades 62 are connected to the triangular edge of the base 61.
  • the number of blades 62 can be six, and each edge of the base 61 is provided with two blades 62 (comprising a set of blades), and the three sets of blades are Circumferential array layout, that is, the angle between each group of blades is 120°, and the rotation outer circle of the six blades 62 is shown in FIG. 9.
  • the blade 62 has an arc structure, and the arcs of the plurality of blades 62 have the same direction.
  • the structure of the blade 62 is designed. When rotating counterclockwise in the direction shown in the figure, the rotating blade 60 can form an expanded air flow, so that the dust around the shaft hole 611 on the base 61 is blown up without accumulating dust in the shaft section.
  • the arc-shaped structure of the blade 62 is more conducive to the formation of a radial spiral airflow, forcing the putty dust in the inner cavity of the dust cover 50 to be difficult to move closer to the shaft end, and it is convenient to blow the putty dust away from the floating shaft 30.
  • the shape of the base 61 can also be in other geometric forms, and different shapes are selected for the base 61 according to different usage requirements; the number of blades 62 can be selected according to the shape of the base 61.
  • the grinding execution end 40 includes a grinding disc holder 41, a sandpaper fixing member 42, and a grinding sandpaper 43.
  • the middle of the grinding disc holder 41 is provided with a mounting table 411 that cooperates with the floating shaft 30.
  • the floating shaft 30 and the mounting table 411 is matched with the grinding disc holder 41 and locked by bolts; as shown in Figures 8 and 10, the rotating blade 60 may also include a connecting rod 63, and the rod hole 612 is used to install the connecting rod 63, for example, the connecting rod 63 is inserted through the rod hole 612 is connected to the grinding disc support 41, so that the rotating blade 60 and the grinding disc support 41 can be locked.
  • the sandpaper fixing member 42 is installed on the grinding disc support 41 by bolts, and is arranged on one side of the grinding disc support 41, and the floating shaft 30 and the rotating blade 60 are located on the other side of the grinding disc support 41.
  • the sanding sandpaper 43 is installed on the sandpaper fixing member 42, and when sanding, the sanding sandpaper 43 protrudes from the dust-proof retaining ring 52.
  • the installation and positioning of the rotating blade 60 and the sandpaper fixing member 42 are realized by the grinding disc holder 41, which is convenient for maintenance and replacement, and improves the maintenance efficiency.
  • the existing sanding construction is an open-loop passive type, which cannot well meet the indoor putty decoration requirements, and the construction of a closed-loop control construction can solve this problem.
  • the distance detection unit and the force detection unit are embedded in the control link to form a closed-loop implementation of the control process.
  • the putty sander 100 further includes a force detection unit 71 and a distance detection unit 72.
  • the force detection unit 71 is used to detect the force of the sanding execution end 40 acting on the sanding surface (that is, the sanding execution end 40 transmits the force to the force detection unit 71) through the floating shaft 30), and the distance detection unit 72 is used to detect the distance between the distance detection unit 72 and the polished surface.
  • the distance detection unit 72 is installed on the upper plate 111 of the power frame 11 and faces the polished surface; the force detection unit 71 is installed in the lower space 182 of the power frame 11, and the force detection unit 71 is connected to the main shaft 20.
  • the structural layout of the detection unit is shown in the figure.
  • the distance detection unit 72 detects the distance between the sensor (distance sensor) and the sanding surface as measured by d, and the inherent distance between the sensor and the sanding disc (the structure composed of sandpaper 43 installed on the sandpaper holder 42) Is d1, the distance between the disc and the wall (sanding surface) is dmeasure-d1.
  • the axial reaction force of the sanding construction is transmitted to the floating shaft 30
  • the force detection unit 71, the polishing control unit (not shown in the figure) sets the preset construction threshold of F, correspondingly reads the F measurement, controls the real-time expansion and contraction of the polishing disc, and then controls the distance to achieve the effect of controlling the polishing construction It realizes the parameter control of different wall putty, which is conducive to the precise control of rough sanding and fine sanding.
  • the schematic diagram of the closed-loop control process of the polishing construction is shown in Figure 12.
  • reasonable grinding force parameters need to be designed, that is, the preset polishing force range ⁇ F, because different types of putty are coated in different weather
  • more matching construction process parameters are required to meet the surface accuracy requirements of putty construction.
  • At the beginning of grinding there is a preset grinding feed d0.
  • the grinding construction is controlled by this parameter.
  • the force is detected to obtain the F measured value.
  • the control algorithm controls the amount of polishing and expansion, updates the d0 value, and enters the next control cycle. If the obtained value judges that the grinding construction is abrupt or singular, it means that the grinding state is not stable.
  • the working principle of the putty sander 100 according to the embodiment of the present application is:
  • the belt wheels of the power unit have an offset installation layout, and the central axis is displaced to achieve vibration isolation; the rotating blade 60 at the floating shaft 30 is structurally designed to achieve the dust removal of the power shaft layout; the lower bottom end of the dust cover 50 is provided with an oval opening 533 Dust is exhausted to improve the dust suction effect of the dust cover 50; the force detection unit 71 and the distance detection unit 72 realize the closed-loop control of the polishing construction.
  • the belt pulley offset structure transmission design solves the problem of anti-vibration.
  • the sander realizes the staggered vibration and impact caused by the sandpaper 43 during the operation, and at the same time guarantees the reliable transmission of power, and solves the problem that pure rigid sanding vibration reduces the service life of the power motor 14.
  • the belt-driven eccentric power grinding has a good use environment during putty grinding, achieving a certain degree of dynamic and static isolation, and conforming to the specification requirements of the normal use of the motor. The state of the power motor 14 under the same conditions has been obviously optimized and improved.
  • Rotating blade 60 is designed to solve the problem of shaft dust.
  • the power shaft that is, the floating shaft 30
  • a dust removal structure blade 62 that is, the rotating blade 60
  • the dust ground off by the sandpaper will diffuse in the inner cavity of the dust cover 50. If there is no protection design on the power shaft, the dust will easily fall and accumulate on the shaft.
  • the rotating design of the blade 62 can form an annular outer blowing area (spiral airflow) in the radial direction of the shaft, so that the putty dust is not easy to fall on the power shaft, and has a good dust removal function for the shaft structure .
  • the aerodynamic function design of the dust cover 50 layout structure solves the problem of dust exhaust from the air pipe.
  • the dust cover 50 is a functional structural design that realizes the putty dust crimping and dust removal.
  • the existing dust cover 50 is too simple in structure and has no pneumatic dust removal effect; the present application adopts an elliptical contraction opening at the bottom of the dust cover 50
  • the characteristic design of the (dust exhaust port 53) is connected to the air pipe structure (dust suction equipment), thereby greatly improving the discharge of dust inside the dust cover 50 under the effect of the negative pressure suction of the air pipe.
  • the existing dust-proof structure cover usually has an opening, which is used to connect the air pipe without a pneumatic fluid function structure design.
  • the dust-proof cover 50 of the present application is designed to be functionally modified for this defect, so as to meet the requirements of the suction type exhaust system. Dust demand.
  • the end is constructed with a closed-loop polishing design.
  • the testing standards for the surface of the putty required for polishing are getting higher and higher.
  • the open-loop passive polishing construction cannot achieve a good polishing quality effect. In the case of sudden changes or singularities, it is often impossible to polish the required surface of the putty. Therefore, the present application realizes the active control construction of the putty surface by the sander by constructing a closed-loop sanding design, and the sander introduces detection units (distance detection unit 72 and force detection unit 71).
  • the grinding distance is detected in the square of the grinding disc and the axial reaction force detection under the construction state of the grinding sandpaper 43 and the putty surface in contact, through real-time control of the posture of the grinding disc, the closed-loop construction effect of putty grinding is realized.
  • This method is compared with the open loop type Passive sanding has good adaptability and putty surface sanding effect.
  • the putty sander 100 of the embodiment of the present application is not only suitable for putty sanding operations, but also can be expanded to be applied to dust and vibration sanding occasions, and can effectively solve the key problems of construction equipment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

La présente invention se rapporte au domaine technique des dispositifs de construction de bâtiments et concerne une ponceuse à mastic (100). La ponceuse à mastic (100) selon l'invention comprend une prise de puissance (10), un arbre principal (20), un arbre flottant (30), une extrémité d'exécution de ponçage (40), un couvercle anti-poussière (50) et une lame rotative (60) ; l'arbre flottant (30), la lame rotative (60) et l'extrémité d'exécution de ponçage (40) sont tous situés à l'intérieur du couvercle anti-poussière (50) ; l'arbre principal (20) est relié par transmission à la prise de puissance (10) ; une extrémité de l'arbre principal (20) s'étend dans le couvercle anti-poussière (50) et est reliée flottante à une extrémité de l'arbre flottant (30), et l'extrémité d'exécution de ponçage (40) est montée sur l'autre extrémité de l'arbre flottant (30) ; et la lame rotative (60) est montée sur l'arbre flottant (30) et sert à générer un flux d'air en spirale radial lors de sa rotation avec l'arbre flottant (30).
PCT/CN2020/123253 2020-02-11 2020-10-23 Ponceuse à mastic WO2021159730A1 (fr)

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