Chain type force control wiping equipment for body-in-white

Abstract

The invention discloses a body-in-white chain type force control wiping device which comprises an annular brush and a driving assembly driving the brush to rotate, the brush comprises an annular chain connected with the driving assembly in a meshed mode and a brush assembly arranged on the chain, and the driving assembly comprises a driving chain wheel meshed with the chain; a force control floating device controlled by a force control motor is arranged in the working area in the annular area of the brush and used for adjusting pressure according to a real-time pressure monitoring signal of the sensor, so that the pressure between the workpiece and the brush is kept constant. The chain is matched with the brush assembly, so that the defects of secondary pollution, speed loss and the like caused by scrap falling due to abrasion of a belt-type brush are overcome; and the wiping effect of the workpiece can be effectively improved through the force control floating device.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, and in particular to a body-in-white chain-type force-controlled cleaning equipment. Background Art

[0002] The existing brush used for cleaning the body of the automobile in the production of automobile enterprises is a belt-type brush, which is mostly used in many industrial cleaning fields. For example, in the production of new energy vehicles, it is combined with an industrial robot to achieve precise wiping of the car before painting. It is an industrial automation equipment with a relatively high degree of integration. Compared with other cleaning equipment (such as ostrich feathers, ion wind, manual cleaning, etc.), it is a relatively advanced equipment.

[0003] The above-mentioned cleaning equipment under the prior art uses a belt brush, the belt of which is prone to wear and tear, and is prone to chipping over time, affecting production; the cleaning equipment under the prior art uses an airbag mechanism to make the brush contact with the workpiece for cleaning, and the airbag clamping is a one-way open-loop clamping measure. There is no compensation when the distance between the brush and the car body changes, the effect is poor, and the cleaning quality is affected. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and defects of the prior art and to provide a body-in-white chain-type force-controlled cleaning device.

[0005] A chain-type force-controlled cleaning device for a body in white comprises an annular brush and a driving assembly for driving the brush to rotate, the brush comprises an annular chain meshingly connected to the driving assembly and a brush assembly arranged on the chain, the driving assembly comprises a driving sprocket meshing with the chain; a force-controlled floating device controlled by a force-controlled motor is arranged in a working area within the annular area of ​​the brush, and is used to adjust the pressure according to the real-time pressure monitoring signal of the sensor, so that the pressure between the workpiece and the brush remains constant.

[0006] Wherein, the brush assembly is composed of multiple brush units, each brush unit includes a brush panel with nylon bristles planted on one side surface, and a support plate that cooperates with the quick-slot slot on the other side surface of the brush panel to achieve a quick-plug connection, and the support plate is connected to the chain through the chain connecting hole thereon.

[0007] Wherein, the support plate includes a panel connecting plate connected to the brush panel and a chain connecting plate connected to the chain. There are two chain connecting plates, which are arranged opposite to each other and each is perpendicular to the panel connecting plate and located on one side surface of the panel connecting plate. Each of the chain connecting plates has two chain connecting holes arranged apart from each other; the chain is arranged between the two chain connecting plates, and the chain is connected to the chain connecting plates through a chain connecting pin.

[0008] Wherein, the lower part of each chain connecting plate is provided with a circular hanger, which is connected to the chain connecting plate in an L shape.

[0009] Among them, the force-controlled floating device includes a floating groove, and the middle part of the upper end of the floating groove is connected to a sensor for monitoring pressure and a force-controlled motor; the floating groove is formed by a plurality of unit floating grooves connected in sequence and is an integrated structure; the connection structure of adjacent unit floating grooves is thinned to form a joint that facilitates the floating groove to perform floating bending.

[0010] The main body of the floating groove is a rectangular groove with an opening facing downward. Two bosses cooperating with the circular hanger are formed on the opening side by vertical inward bending. When the brush is running, the chain passes through the floating groove and the bosses cooperate with the circular hanger.

[0011] Wherein, floating guide mechanisms are arranged on both sides of the force control motor, the lower end of the floating guide mechanism is connected to the floating groove, and the upper end of the floating guide mechanism is connected to the upper plate of the bracket located in the annular area.

[0012] The driving sprocket adopts a sprocket integrated driving component, the motor housing and the sprocket are made in an integrated manner, and the driving motor is integrated inside the sprocket.

[0013] Among them, a micro-liquid nozzle is arranged in the non-working area to evenly distribute the cleaning liquid in the width direction of the nylon bristles of the brush. Under the action of negative pressure, the micro-needle valve assembled in the multiple cleaning liquid holes connected to the main liquid hole cooperates to achieve the cleaning liquid being evenly sprayed onto the surface of the nylon bristles through its multiple liquid separation holes by the micro-needle valve.

[0014] Wherein, a suction separation device for blowing away dust on the brush is arranged at a position in front of the micro-liquid nozzle when rotating counterclockwise from the working area to the non-working area; wherein, the driving component includes a tensioning wheel, and the tensioning wheel is connected to the tensioning cylinder.

[0015] The chain-type force-controlled cleaning device for the body of the present invention adopts a chain and a brush assembly to make the brush structure a chain-type brush. Compared with the belt-type brush, such a chain brush device also achieves a continuous cleaning effect, but avoids the disadvantages of secondary pollution and loss of speed caused by wear and tear of the belt-type brush.

[0016] The chain-type force-controlled wiping equipment for the body of the present invention adjusts the pressure according to the real-time pressure monitoring signal of the sensor through the setting of the force-controlled floating device, so that the pressure between the workpiece and the brush is kept constant, the compensation effect is good, and the wiping effect of the workpiece can be effectively improved. It solves the problem that in the prior art, the brush is brought into contact with the workpiece for wiping treatment through the airbag mechanism, and the airbag clamping is a one-way open-loop clamping measure. There is no compensation when the distance between the brush and the body changes, the effect is poor, and the cleaning quality is affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a chain-type force-controlled cleaning device for a body in white according to an embodiment of the present invention.

[0018] Figure 2 It is a cross-sectional schematic diagram of a brush assembly of a chain-type force-controlled cleaning device for a body-in-white according to an embodiment of the present invention.

[0019] Figure 3 It is a three-dimensional schematic diagram of a brush assembly of a chain-type force-controlled cleaning device for a body-in-white according to an embodiment of the present invention.

[0020] Figure 4 It is a schematic front view of a driving sprocket of a chain-type force-controlled cleaning device for a body-in-white according to an embodiment of the present invention.

[0021] Figure 5 It is a side view schematic diagram of a driving sprocket of a chain-type force-controlled cleaning device for a body in white according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of the coordination of a floating tank, a force-controlled motor and a brush of a micro-liquid spraying device of a chain-type force-controlled cleaning device for a body-in-white according to an embodiment of the present invention.

[0023] Figure 7 Schematic diagram of a floating tank according to an embodiment of the present invention.

[0024] Figure 8 It is a partially enlarged schematic diagram of the chain-type force-controlled cleaning device for the body-in-white according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Please refer to the attached drawings. The body-in-white chain-type force-controlled cleaning device of the present invention comprises an annular brush 2 and a driving assembly for driving the brush to rotate. The brush 2 comprises an annular chain 7 meshingly connected with the driving assembly and a brush assembly arranged on the chain. The driving assembly comprises a driving sprocket 5 meshing with the chain. A force-controlled floating device controlled by a force-controlled motor 3 is arranged in the working area within the annular area of ​​the brush. The device is used to adjust the pressure according to the real-time pressure monitoring signal of the sensor so that the pressure between the workpiece and the brush remains constant. The force-controlled floating device actively and adaptively adjusts the contact force by monitoring the contact force between the brush and the workpiece, so that the contact force can always be maintained at a preset pressure value or a range.

[0027] Compared with the belt-type friction-type drive structure, the chain-type drive structure adopted in the embodiment of the present application does not wear, does not drop slag, does not cause secondary pollution, does not drop speed, and runs more reliably.

[0028] In some embodiments, the brush assembly is composed of a plurality of brush units, each brush unit includes a brush panel 20 having nylon bristles 21 planted on one surface, and a support plate that cooperates with a quick-slot slot on the other surface of the brush panel to achieve a quick-plug connection, and the support plate is connected to the chain 7 via a chain connecting hole 24 thereon. In particular, each brush unit is independently connected to the chain, which can facilitate local replacement and maintenance.

[0029] The structure of the brush assembly and the chain connection in the embodiment of the present application realizes that the transmission can be realized by chain, and the brush assembly and the chain are connected by the support plate. The quick plug connection between the brush panel and the support plate is convenient for replacement, maintenance and assembly. The present application adopts a plate chain brush structure, which has a quick plug installation function and the advantages of flexible and fast installation, saving on-site replacement time and improving use efficiency.

[0030] In some embodiments, the support plate includes a panel connecting plate 22 connected to the brush panel and a chain connecting plate 23 connected to the chain. There are two chain connecting plates 23, which are arranged opposite to each other and each is perpendicular to the panel connecting plate 22 and located on one side surface of the panel connecting plate 22. Each of the chain connecting plates 23 has two chain connecting holes 24 arranged apart from each other; the chain 7 is arranged between the two chain connecting plates, and the chain is connected to the chain connecting plates through a chain connecting pin.

[0031] In some embodiments, each of the chain connecting plates 23 has a circular hanger 25 at the bottom, which is connected to the chain connecting plate 23 in an L shape. The force-controlled floating device includes a floating groove 8, and the brush assembly cooperates with the floating groove 8 of the force-controlled floating device through the chain connecting plate 23 of the support plate and the circular hanger 25.

[0032] In some embodiments, the middle part of the upper end of the floating groove 8 is connected to a sensor 30 for monitoring pressure and a force control motor 3; the floating groove 8 is formed by a plurality of unit floating grooves 81 connected in sequence and is an integrally formed structure; the connection structure of adjacent unit floating grooves is thinned to form a joint 82 that is convenient for the floating groove to float and bend, so that the floating groove can bend and float up and down like the joint body of a snake bone joint during the contact process between the brush and the workpiece, and always maintain contact with the surface of the workpiece to be wiped without the possibility of being unable to contact.

[0033] In the embodiment of the present application, the force control motor 3 includes a linear moving part, and the linear moving rod 31 connected to it is connected to the top surface of the floating groove 8 through a driving plate 33, and a pressure sensor 30 is fixed on the driving plate 33. The linear moving part is connected to the rotating shaft 32 of the motor rotation driving part. When the motor inside the motor rotation driving part rotates, the linear moving part moves linearly up and down, and drives the linear moving rod 31 to move. The rotating shaft 32 of the motor rotation driving part is connected to the horizontal extension plate at the bottom of the L-shaped guide groove 34 connected to the top of the pressure sensor 30, wherein the L-shaped guide groove is slidably connected to the slide rail mechanism on the side of the motor rotation driving part. Specifically, the L-shaped guide groove and the linear moving part are connected to the mounting bracket 13.

[0034] In some embodiments, the main body of the floating groove 8 is a rectangular groove with an opening facing downward. In addition, its opening side is formed with two bosses 82 that cooperate with the circular hanger 25 by vertical inward bending. When the brush is running, the chain 7 passes through the floating groove, and the boss 82 cooperates with the circular hanger 25. In the working area, when the chain is running, the chain and the circular hanger 25 will enter the groove body of the floating groove, and the floating groove is connected to the force control motor. In this way, when the force control motor needs to adjust the contact force between the brush and the workpiece-the white body, the downward force is directly applied to the floating groove or the floating groove is driven to move away from the workpiece, thereby adjusting the contact force between the brush and the workpiece, realizing active floating adjustment of the contact force, and maintaining it at a stable pressure value.

[0035] In some embodiments, in the non-working area, a non-floating limit guide groove 10 is arranged above the position of the floating groove, and is arranged on the top plate or the top of the upper plate of the mounting bracket. When the annular brush is running, when passing through the non-working area, the chain passes through the non-floating limit guide groove 10. The cross-sectional shape of the non-floating limit guide groove 10 is consistent with that of the floating groove, except that it cannot bend and always maintains a horizontal arrangement during operation to achieve guidance and limitation of the upper end part of the brush operation.

[0036] In some embodiments, floating guide mechanisms 11 are arranged on both sides of the force control motor 3, the bottom of the moving part of the floating guide mechanism 11 is connected to the floating groove 8, and the guide groove of the moving part of the floating guide mechanism 11 is connected to the mounting bracket 13 located in the annular area. The floating guide mechanism 11 is arranged in this way, so that the floating groove 8 can bend and float like a snake bone joint within a preset stroke range. The floating guide mechanism can be realized by a mechanism similar to a slide rail, such as a guide groove and a moving part (such as a slide rod) slidingly connected.

[0037] In some embodiments, the driving sprocket 5 adopts a sprocket integrated driving component, the motor housing 51 and the sprocket 52 are made in an integrated manner, and the driving motor is integrated inside the sprocket. The driving motor adopts DC servo technology, constant speed control, large torque output, the driving sprocket and the motor housing are made in an integrated manner, saving equipment space and reducing motor weight. The temperature and operating characteristic signals of the driving motor are connected to the PLC through communication, and remote judgment is made on whether the driving motor is normal.

[0038] In particular, the innovative integration of motor and sprocket is an important technical indicator that the chain brush can achieve. The integration of motor and sprocket can reduce the space occupied by the motor part, reduce the weight of the motor part, and optimize the load of the industrial robot, thus laying a good foundation for the continuous and successful operation of the chain brush.

[0039] In some embodiments, a micro-liquid nozzle 4 is arranged in the non-working area of ​​the brush to evenly distribute the cleaning liquid in the width direction of the nylon bristles of the brush, that is, to evenly distribute the cleaning liquid in the width direction of the nylon bristles of the brush. The micro-liquid nozzle 4 can cooperate with the micro-needle valves installed in multiple cleaning liquid holes connected to the main liquid hole under the action of negative pressure to achieve the cleaning liquid being evenly sprayed onto the surface of the nylon bristles through its multiple liquid separation holes by the micro-needle valve. The micro-liquid nozzle 4 can be arranged with multiple nozzle units to achieve uniform micro-spraying of the brush. Each nozzle unit can control the flow rate separately through a separately configured micro-needle valve to achieve a constant total flow rate, evenly distribute the cleaning liquid on the brush surface, and achieve uniform liquid distribution on the brush surface.

[0040] In some embodiments, a suction separation device 6 for blowing away dust on the brush is arranged in a position that rotates counterclockwise from the working area to the non-working area and passes in front of the micro-liquid nozzle 4. The suction separation device can use negative pressure suction to suck away the dust on the brush. A brush beating mechanism that cooperates with the brush is provided at the bottom. When the brush runs to this position, the brush is beaten, and then the dust is sucked away by negative pressure to achieve cleaning.

[0041] In some embodiments, the driving assembly further includes a tensioning wheel 1, which is connected to a tensioning cylinder 12, and the tensioning cylinder 12 is connected to a mounting bracket 13 arranged in the annular area of ​​the brush. In some embodiments, the mounting bracket 13 is fixedly connected to the link entry side of the floating groove 8 by an L-shaped piece, so that the chain entry end of the floating groove remains stationary during the operation of the equipment to facilitate the chain entry.

[0042] In the chain-type force-controlled cleaning device for the body-in-white of the embodiment of the present invention, when working, the brush is driven by the driving component to rotate at a constant speed in the direction of Figure 1As shown by the arrow in the figure, the nylon bristles of the brush are evenly sprayed with antistatic cleaning liquid through the micro-liquid nozzle. The micro-flow control system accurately controls the flow and uniformity of the micro-liquid nozzle, so that the antistatic cleaning liquid can be evenly distributed on the tip of the nylon bristles. The brush moves forward and turns to the bottom of the tensioner wheel. The working surface is the contact area between the nylon bristles with a trace amount of antistatic cleaning liquid and the workpiece. The force control motor controls the contact pressure, that is, adjusts the pressure according to the sensor signal to ensure that the pressure between the workpiece and the brush is constant. The dust is taken away from the workpiece by the nylon bristles, and the nylon bristles turn back to the drive motor area and enter the separation chamber. Under the action of collision and strong suction, the dust is discharged, so that the nylon bristles are restored to a clean state and then enter the micro-liquid spraying area for a new cycle to form an efficient and reliable cleaning system, thereby realizing continuous and uninterrupted surface cleaning in industrial production.

[0043] The chain-type force-controlled cleaning device for the body of the invention in an embodiment of the present invention adopts a chain and a brush assembly to make the brush structure a chain-type brush. Compared with the belt-type brush in the prior art, such a chain brush device also achieves a continuous cleaning effect, but avoids the disadvantages of the belt-type brush wearing and shedding, causing no secondary pollution, and losing speed.

[0044] The chain-type force-controlled wiping equipment for the body of the invention adjusts the pressure according to the real-time pressure monitoring signal of the sensor through the setting of the force-controlled floating device, so that the pressure between the workpiece and the brush is kept constant, the compensation effect is good, and the wiping effect of the workpiece can be effectively improved. This solves the problem that the cleaning equipment in the prior art uses an airbag mechanism to bring the brush into contact with the workpiece for wiping treatment, and the airbag clamping is a one-way open-loop clamping measure. There is no compensation when the distance between the brush and the body changes, the effect is poor, and the cleaning quality is affected.

[0045] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0046] Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that all changes falling within the meaning and range of equivalent elements of the claims are included in the present invention.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A chain-type force-controlled cleaning device for a body in white, comprising a ring-shaped brush and a driving assembly for driving the brush to rotate, characterized in that: The brush includes an annular chain meshed with the driving assembly and a brush assembly arranged on the chain, and the driving assembly includes a driving sprocket meshed with the chain; a force-controlled floating device controlled by a force-controlled motor is arranged in the working area within the annular area of ​​the brush, which is used to adjust the pressure according to the real-time pressure monitoring signal of the sensor to keep the pressure between the workpiece and the brush constant.

2. The body-in-white chain-type force-controlled cleaning device according to claim 1 is characterized in that: The brush assembly is composed of multiple brush units, each brush unit includes a brush panel with nylon bristles planted on one side surface, and a support plate that cooperates with the quick-slot slot on the other side surface of the brush panel to achieve a quick-plug connection, and the support plate is connected to the chain through the chain connecting hole thereon.

3. The body-in-white chain-type force-controlled cleaning device according to claim 2 is characterized in that: The support plate includes a panel connecting plate connected to the brush panel and a chain connecting plate connected to the chain. There are two chain connecting plates, which are arranged opposite to each other and each is perpendicular to the panel connecting plate and located on one side surface of the panel connecting plate. Each of the chain connecting plates has two chain connecting holes arranged apart from each other. The chain is arranged between the two chain connecting plates, and the chain is connected to the chain connecting plates through a chain connecting pin.

4. The body-in-white chain-type force-controlled cleaning device according to claim 3 is characterized in that: The lower part of each chain connecting plate is provided with a circular hanger, which is connected with the chain connecting plate to form an L shape.

5. The body-in-white chain-type force-controlled cleaning device according to claim 4 is characterized in that: The force-controlled floating device includes a floating groove, and the middle part of the upper end of the floating groove is connected to a sensor for monitoring pressure and a force-controlled motor; the floating groove is formed by connecting a plurality of unit floating grooves in sequence and is an integrally formed structure; the connection structure of adjacent unit floating grooves is thinned to form a joint that facilitates the floating groove to perform floating bending.

6. The body-in-white chain-type force-controlled cleaning device according to claim 5, characterized in that: The main body of the floating groove is a rectangular groove with an opening downward. Two bosses cooperating with the circular hanger are formed on the opening side by vertical inward bending. When the brush is running, the chain passes through the floating groove, and the bosses cooperate with the circular hanger.

7. The body-in-white chain-type force-controlled cleaning device according to claim 5, characterized in that: Floating guide mechanisms are arranged on both sides of the force control motor, the lower end of the floating guide mechanism is connected to the floating groove, and the upper end of the floating guide mechanism is connected to the upper plate of the bracket located in the annular area.

8. The body-in-white chain-type force-controlled cleaning device according to claim 1, characterized in that: The driving sprocket adopts a sprocket integrated driving component, the motor housing and the sprocket are made in an integrated manner, and the driving motor is integrated inside the sprocket.

9. The body-in-white chain-type force-controlled cleaning device according to claim 1, characterized in that: A micro-liquid nozzle is arranged in the non-working area to evenly distribute the cleaning liquid in the width direction of the nylon bristles of the brush. Under the action of negative pressure, the micro-needle valve assembled in the multiple cleaning liquid holes connected to the main liquid hole cooperates to achieve the cleaning liquid being evenly sprayed onto the surface of the nylon bristles through its multiple liquid separation holes by the micro-needle valve.

10. The body-in-white chain-type force-controlled cleaning device according to claim 9, characterized in that: A suction separation device for blowing away dust on the brush is arranged in a position that rotates counterclockwise from the working area to the non-working area and passes in front of the micro-liquid nozzle; the driving component includes a tensioning wheel, which is connected to the tensioning cylinder.

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