CN109395903B - Pneumatic cup rotating structure - Google Patents
Pneumatic cup rotating structure Download PDFInfo
- Publication number
- CN109395903B CN109395903B CN201811197224.0A CN201811197224A CN109395903B CN 109395903 B CN109395903 B CN 109395903B CN 201811197224 A CN201811197224 A CN 201811197224A CN 109395903 B CN109395903 B CN 109395903B
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- rotary cup
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- air
- rotary
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- 239000003973 paint Substances 0.000 claims abstract description 74
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000000889 atomisation Methods 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 30
- 239000007921 spray Substances 0.000 description 16
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006049 ring expansion reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/08—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements in association with stationary outlet or deflecting elements
- B05B3/082—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements in association with stationary outlet or deflecting elements the spraying being effected by centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a pneumatic rotary cup structure, which comprises a rotary cup body and a rotary cup atomizer arranged in the rotary cup body, wherein a power mechanism driven by external air supply is arranged in the rotary cup body, and the power mechanism drives the rotary cup atomizer to rotate and atomize paint liquid input into the rotary cup atomizer; the outside of cup atomizer soon is equipped with and forms annular crack with the opening of cup body soon and supply the interior high-pressure gas of cup body soon to spout from annular crack and retrain the annular piece that paint gathered. According to the invention, the annular gap formed by matching the annular piece with the opening of the pneumatic rotary cup shell can restrict the high-pressure air injection direction in the pneumatic rotary cup, meanwhile, the gap between the pneumatic rotary cup shell and the rotary cup atomizer is skillfully utilized, no additional holes are needed, and meanwhile, no separate air chamber and air channel are needed to be designed in the pneumatic rotary cup, so that the design is optimized, the atomization efficiency is improved, the manufacturing process is reduced, and the cost is reduced.
Description
Technical Field
The invention belongs to the technical field of paint spraying equipment, and particularly relates to a pneumatic rotary cup structure.
Background
The spraying is a coating method in which uniform and fine droplets are dispersed by a spray gun or a disk atomizer by pressure or centrifugal force and applied to the surface of an object to be coated. Various derivatives of the basic spray forms described above, such as high-flow low-pressure atomized spray, thermal spray, automatic spray, multiple-unit spray, and the like, can be categorized as air spray, airless spray, electrostatic spray, and the like. Air spraying is one of the most commonly used methods, in which compressed air is used to atomize the coating material for spraying. Parameters such as paint spraying amount, paint beam shape, paint beam diameter, paint particle size, air pressure and the like must be properly adjusted according to the type and viscosity of the paint. The advantages are that: the paint spraying conditions can be selected at will, the operation is easy, and the method is suitable for workpieces with important spraying quality. The air spraying can produce even paint, and the coating is fine and smooth; the coating can also be uniformly sprayed on more concealed parts (such as gaps and concave-convex parts) of parts.
The disc atomizer is a centrifugal atomizer, the paint is atomized into fine mist drops by utilizing the centrifugal force generated by high-speed rotation of a spray head, and the rotating disc is a disc with a certain number of half-angle saw teeth at the circumferential edge. When the disc rotates rapidly, paint moves to the edge of the disc and finally breaks away from the disc under the action of centrifugal force to be thrown into the air around people to form fog drops. The phenomenon is like that an umbrella is rotated rapidly in rain, and rainwater on the umbrella is thrown out from the edge of the umbrella to form water drops. The fineness of the droplets formed by centrifugal force atomization depends on the rotation speed of the rotating disc, the surface tension and viscosity of the paint and the acceleration of the paint droplets. The higher the rotational speed, the finer the atomization. The rotation speed and the drop acceleration can be manually controlled, so that the atomization fineness can be manually controlled.
The existing centrifugal paint atomizer adopts a rotary cup atomizer structure driven by a power mechanism to rotate at a high speed, and the paint liquid entering the centrifugal paint atomizer is thrown to the periphery through an oil distributing cap arranged in the rotary cup atomizer. The power mechanism is usually a turbine driven by high-pressure gas, and the turbine drives the rotary cup atomizer to rotate. However, paint atomized by the rotary cup atomizer can be diffused all around, and cannot be gathered and uniformly distributed towards one direction, so that the spraying effect is poor easily.
In order to restrict the spraying direction and range of paint, the gas outlet for spraying high-pressure gas towards the spraying position of the atomized paint is arranged around the rotary cup atomizer, so that the atomized paint diffused around can move towards the axis direction of the rotary cup atomizer under the drive of high-speed gas, and the effect of restricting aggregation is achieved.
In the prior art, the air outlet is used for spraying air obliquely towards the outer wall of the cup tray, when the high-pressure air contacts the outer wall of the cup tray, part of the air can directly rebound and move outwards, and turbulence is formed around the position where the air contacts the outer wall of the cup tray, so that part of the air is lost; and partial gas moves towards the opening of the cup plate along the outer wall of the cup plate, and partial kinetic energy loss is caused by the partial gas striking the outer wall of the cup plate, so that although the high-speed movement state is still maintained and the paint thrown out from the opening of the cup plate is guided to be converged and sprayed towards the front, the atomization effect is poor, the constraint effect is poor, and the problem that paint spots or uneven paint spraying appear on the surface of a painted workpiece is caused.
Disclosure of Invention
In order to solve the problems of flow velocity and flow loss of high-pressure gas in the prior art, the invention provides a pneumatic control rotary cup structure capable of achieving a better atomization effect by changing the flow direction of the high-pressure gas and restraining an air outlet.
The technical scheme adopted by the invention is as follows:
the pneumatic rotary cup structure comprises a rotary cup body and a rotary cup atomizer arranged in the rotary cup body, wherein a power mechanism driven by external air supply is arranged in the rotary cup body, and the power mechanism drives the rotary cup atomizer to rotate and atomize paint liquid input into the rotary cup atomizer; the outside of cup atomizer soon is provided with the air feed structure that is used for converging the paint liquid after the atomizing.
The air supply structure is a plurality of annular air holes which are arranged on the rotary cup body and provide high-pressure air flow towards the inclined plane of the outer wall of the rotary cup atomizer, and the air holes are communicated with the high-pressure air chamber in the rotary cup body. The high-pressure air flow provided by the air hole directly flows to the rotary cup atomizer quickly, and the air flow contacts with the inclined plane of the outer wall of the rotary cup atomizer and flows along the inclined plane of the outer wall of the rotary cup atomizer at a high speed to be intersected with the centrifugally atomized paint in the inner wall of the rotary cup atomizer, so that atomized paint jet is formed. The direction of the air hole is intersected with the inclined plane obtuse angle of the outer wall of the rotary cup atomizer, so that smooth transition guiding can be realized, the influence of the air flow speed is small, the interference degree is low, turbulent flow is effectively avoided, and a good paint atomization convergence effect can be obtained. The high-pressure air chamber is a chamber which is arranged in the rotary cup body and is communicated with an air source of external air supply respectively and outputs high-pressure air through the air holes, so that the air flow speed attenuation caused by the narrow air source channel can be effectively prevented, and the paint spraying effect is reduced.
The air supply structure specifically adopts an annular gap formed by the outer part of the rotary cup atomizer and the opening of the rotary cup body for jetting high-pressure air in the rotary cup body from the annular gap and restraining paint aggregation.
Wherein, the pneumatic rotary cup structure is a structure which is arranged at the front part of the whole paint spraying device for spraying paint. The paint liquid is injected into the rotary cup atomizer to pass through and is driven by the power mechanism to rotate at a high speed, so that the paint liquid is thrown out at a high speed to achieve an atomization effect. And high-pressure gas is injected into the rotary cup body through an external gas supply mechanism and is sprayed out of the annular crack. The high-pressure gas ejection port of the existing rotary cup structure is right opposite to the outer wall of the rotary cup structure, and gas is impacted on the outer wall of the rotary cup structure at a high speed to generate gas turbulence, so that the gas speed and the gas quantity along the outer wall of the rotary cup structure and cutting the edge of a paint spraying port of the rotary cup atomizer are reduced. The annular gap can uniformly distribute gas, and the gas sprayed from the annular gap moves upwards directly along the outer wall of the rotary cup atomizer, so that the conditions of turbulence loss speed and gas quantity caused by impact are avoided, and the gap between the rotary cup body and the paint spraying end of the rotary cup atomizer is skillfully utilized for gas outlet.
Further, the rotary cup body is provided with an air pressure compensation structure for performing air pressure compensation towards the outer wall of the rotary cup atomizer.
It should be noted that, the air pressure compensating structure in the present invention can spray high pressure air into the annular area outside the rotary cup atomizer at the upper part of the annular gap, and those skilled in the art should understand that the air pressure compensating structure includes an injection hole, an injection pipe, a through slot or a structure of independent injection separately communicated with a high pressure air source.
Further, the rotary cup body is provided with an air hole which faces the outer wall of the rotary cup atomizer and guides high-pressure air in the rotary cup body to be sprayed out for air pressure compensation. The annular region outside the annular nip adjacent the rotor body forms a low pressure zone B due to the high velocity of the gas flowing therethrough, which causes a portion of the gas to flow toward the region, thereby affecting the effect of the gas cutting the rim of the cup. Therefore, the circular end face of the air cap provided with the opening is provided with a plurality of air holes, the air holes are communicated with the inner side of the air cap, and high-pressure air in the rotary cup body is sprayed out through the air holes and is sprayed towards the low-pressure area B of the upper cone, so that the air in the area is effectively supplemented, the normal pressure is recovered, excessive air waste is avoided, and the atomization effect is improved.
Further, the rotary cup body comprises a shell and a rotary cup connecting seat which are mutually buckled to form an inner cavity, and a bearing seat is arranged in the inner cavity; the rotary cup atomizer is inserted into the bearing seat and is rotationally connected with the bearing seat through a bearing arranged in the bearing seat, and the rotary cup atomizer and an opening of the shell form an annular crack.
Further, a channel for the rotary cup atomizer to pass through is arranged on the bearing seat, one end of the channel expands to form an annular expanding cavity A which is contacted with the shell, and the other end expands to form an annular expanding cavity B which is contacted with the rotary cup connecting seat; the rotary cup atomizer is far away from the oil injection end, is inserted into the channel from the annular expanding cavity A and penetrates through the channel to be in transmission connection with a power mechanism arranged in the annular expanding cavity B.
Further, the rotary cup atomizer comprises cup discs connected with each other and a rotating shaft in transmission connection with a power mechanism in the pneumatic rotary cup, and the annular piece is arranged on the cup discs; an annular mounting groove is formed in the cup disc and close to the joint of the cup disc and the rotating shaft, and an oil distributing cap is arranged in the annular mounting groove.
Further, the rotary cup connecting seat is provided with an oil injection rod inserted into the rotary cup atomizer from one end of the rotating shaft.
Further, a rotary air inlet channel and a rotary air outlet channel which are communicated with the annular expansion cavity B are also arranged on the rotary cup connecting seat; the high-pressure gas enters the annular expansion cavity B through the rotary air inlet channel and pushes the power mechanism to drive the rotary cup atomizer to rotate; the power mechanism is a pneumatic impeller.
Further, the rotary cup connecting seat is also provided with a jet air inlet channel communicated with the cavity between the outer side of the bearing seat and the shell; the high-pressure gas enters the shell through the injection air inlet passage and is sprayed out of the annular crack.
Further, the shell is an air cap which is connected with the rotary cup connecting seat and supports the bearing seat on the rotary cup connecting seat, and one side of the air cap, which is far away from the bearing seat, is provided with an opening which forms an annular crack with the annular piece.
It is worth noting that the lower edge of the bearing seat is propped against the end face of the rotary cup connecting seat to form a seal, and the upper edge of the bearing seat is propped against the inner wall of the shell to form a seal. And the annular clamping groove is formed in the opening of the upper side of the bearing seat, and the slit precision is ensured by the locating ring of the rotary cup body and the locating ring in the air cap, so that the processing difficulty is reduced. Three independent spaces are formed between the annular expansion cavity B and the rotary cup connecting seat, between the shell and the bearing seat and between the annular expansion cavity A and the air cap. And the annular expanding cavity B forms a seal with the space between the shell and the bearing seat, and high-pressure gas entering the space between the shell and the bearing seat moves upwards and enters the annular expanding cavity A through the vent hole arranged on the bearing seat and is sprayed out from the annular crack.
Further, at least two O-shaped ring mounting grooves are formed in the outer wall of the rotating shaft, and O-shaped rings are arranged on the O-shaped ring mounting grooves and matched with bearings in the pneumatic rotary cup.
Further, a B bump is arranged on the outer wall of the bearing seat, an A bump is arranged on the rotary cup connecting seat, and the bearing seat is limited to rotate relatively through the A bump and the B bump when being arranged on the rotary cup connecting seat.
The beneficial effects of the invention are as follows:
(1) According to the invention, the annular gap formed by matching the annular piece with the opening of the pneumatic rotary cup shell can restrict the high-pressure air injection direction in the pneumatic rotary cup, meanwhile, the gap between the pneumatic rotary cup shell and the rotary cup atomizer is skillfully utilized, no additional holes are needed, and meanwhile, no separate air chamber and air channel are needed to be designed in the pneumatic rotary cup, so that the design is optimized, the atomization efficiency is improved, the manufacturing process is reduced, and the cost is reduced;
according to the invention, the air pressure compensation structure is arranged at the position of the air cap close to the cup tray, so that a low-pressure area is effectively prevented from being formed in the area between the cup tray and the annular slit after high-speed air is sprayed out of the annular slit, and the atomization effect is improved;
(3) The annular groove is arranged, so that the weight of the whole rotary cup atomizer can be reduced, and the rotary cup atomizer made of plastic or other light materials can be adopted through the structural design, so that the weight of the whole pneumatic rotary cup is reduced, and the handheld operation is convenient;
(4) The structure of the rotary cup atomizer consists of a cup disc and a rotating shaft which are connected with each other to form an integrated structure; compared with a detachable connection mode, the structure not only improves the structural strength, but also can not cause the situation that the cup disc and the rotating shaft are not concentric due to the problem of an assembly process, because the rotary cup atomizer can rotate at a high speed, the axes of the two detachable connection structures are required to be positioned on the same straight line in a connection state, and if the error is large, vibration is generated between the two parts, so that the parts are worn, and the service life is shortened;
(5) According to the invention, the annular O-shaped ring mounting groove is formed in the outer wall of the rotating shaft corresponding to each bearing, the O-shaped ring is arranged in the O-shaped ring mounting groove, and the O-shaped ring is arranged on the bearing, so that the processing precision requirement of the rotating shaft can be reduced, and meanwhile, the noise generated during high-speed rotation is reduced;
(6) The annular mounting groove for fixing the oil distributing cap is arranged on the inner wall of the cup tray, and the oil distributing cap is clamped in the annular mounting groove to realize detachable connection, so that the oil distributing cap is convenient to clean and detach;
(7) The shape of the whole bearing seat is convenient for the installation and maintenance of the bearing, and meanwhile, the outer part of the annular expanding cavity A formed by extending the bearing seat is used as a positioning structure of the air cap, so that the processing is easy to control the precision, the production is simplified, and the annular crack is more uniform in precision and easy to control;
(8) The shell of the invention is designed as a single shell, the performance of the shell is unchanged, but the structure is simpler, the weight is lighter, and the operation is convenient.
Drawings
Wherein: the device comprises a 1-rotary cup atomizer, a 101-cup disc, a 102-rotating shaft, a 2-annular piece, a 3-annular groove, a 4-annular mounting groove, a 5-oil distributing cap, a 6-O-shaped ring mounting groove, a 7-annular flange, an 8-rotary cup connecting seat, a 9-bearing seat, a 10-bearing, an 11-A annular expansion cavity, a 12-B annular expansion cavity, a 13-oil injection rod, a 14-rotary air inlet channel, a 15-rotary air outlet channel, a 16-injection air inlet channel, a 17-pneumatic impeller, a 18-rotating handle, a 19-feed valve, a 20-handle, a 21-gun shell, a 22-connecting rod, a 23-air cap, 24-air holes and a B-low pressure area.
FIG. 1 is a schematic view of the structure of a hand-held spray gun of the present invention;
FIG. 2 is a schematic view of the explosive construction of the hand-held spray gun of the present invention;
FIG. 3 is a schematic diagram of the explosion relationship of the present invention with a wind driven impeller, bearing housing and rotating cup connection base;
FIG. 4 is a schematic illustration of a prior art bell cup subjected to gas impingement;
FIG. 5 is a schematic view of the structure of the spin cup body of the present invention;
FIG. 6 is a schematic view of the cross-section of FIG. 5 along B-B, with the gas flow direction labeled, in accordance with the present invention;
FIG. 7 is a schematic view of the structure of the bearing housing of the present invention;
FIG. 8 is a schematic view of the sectional structure of FIG. 7 taken along line B-B in accordance with the present invention;
FIG. 9 is a schematic view of the structure of the rotary cup atomizer of the present invention;
FIG. 10 is a schematic view of the sectional structure of FIG. 9 taken along E-E in accordance with the present invention;
FIG. 11 is a schematic view of the structure of the oil separating cap of the present invention;
FIG. 12 is a schematic view of the back structure of a swivel cup attachment base of the present invention with two swivel air inlets;
FIG. 13 is a schematic view of the structure of the present invention taken along line C-C in FIG. 12;
FIG. 14 is a schematic view of the structure of the present invention taken along line D-D in FIG. 12;
FIG. 15 is a schematic axial side view of a swivel cup attachment mount with a bearing mount according to the present invention;
FIG. 16 is a schematic view of the cut-away structure of FIG. 15 in accordance with the present invention;
FIG. 17 is a schematic view of the axial structure of the screw cup attachment base of the present invention;
FIG. 18 is a schematic view of the structure of the invention for reducing the volume of the internal components of the spin cup body;
FIG. 19 is a rear view of the swivel cup attachment mount of the present invention;
FIG. 20 is a front isometric view of a swivel cup attachment mount of the invention;
FIG. 21 is a cross-sectional view of the hand-held cup gun of the present invention;
FIG. 22 is a schematic view of the cut-away structure of a spin cup body with a single layer air cap of the present invention;
FIG. 23 is a schematic view of the reduced internal volume spin cup body of the present invention in cross-section;
FIG. 24 is a schematic view of a cutaway structure of another spin cup body of the present invention;
FIG. 25 is an enlarged view of part A of FIG. 6 in accordance with the present invention;
fig. 26 is a schematic view of the structure of the air cap of the present invention.
FIG. 27 is a schematic diagram showing the structure of an embodiment 7 of the present invention, which uses air holes to converge atomized paint.
Detailed Description
The invention is further illustrated by the following description of specific embodiments in conjunction with the accompanying drawings.
Example 1:
the embodiment discloses a pneumatic cup structure, as shown in fig. 22, 6 and 9, including cup atomizer 1, cup connecting seat 8, bearing frame 9 and air cap 23 soon, cup atomizer 1 rotates with bearing frame 9 through the bearing 10 that is equipped with and is connected. The bearing seat 9 is arranged on the rotary cup connecting seat 8, and the bearing seat 9 is covered and pressed on the rotary cup connecting seat 8 through an air cap 23 connected with the rotary cup connecting seat 8. The rotary cup atomizer 1 is internally provided with an oil injection rod 13 and an oil distribution cap 5, and the oil distribution cap 5 is arranged at a paint emission end close to the oil injection rod 13. The rotary cup atomizer 1 is also connected with a power mechanism, and is driven by the power mechanism to rotate at a high speed, so that paint sprayed out of the oil injection rod 13 is thrown out at a high speed under the action of centrifugal force through the oil separating cap 5, and the effect of preliminary atomization is achieved.
The air cap 23 is provided with an opening at one side far away from the rotary cup connecting seat 8, and a circle of annular piece 2 with a smooth cylindrical outer wall is arranged on the outer wall close to the opening of the cup plate 101. The annular piece 2 can be matched with the shell structure of the pneumatic rotary cup to guide high-pressure gas in the pneumatic rotary cup to be sprayed out. The shell structure is an air cap 23, the rotary cup atomizer 1 is arranged in the air cap 23, the cup 101 is ejected from an upper opening of the air cap 23, and an annular crack is formed between the outer wall of the annular piece 2 and the corresponding opening of the air cap 23. While the high-pressure gas can fill the space between the gas cap 23 and the cup atomizer 1 and rapidly eject from the formed annular slit. At this time, the gas is restrained by the annular gap so as to move along the outer wall of the annular member 2, thereby reducing turbulence, and more gas flow can be generated at the opening edge of the cup plate 101 under the same gas pressure condition, and meanwhile, the flow velocity loss is smaller, so that the atomization and restraint effects are improved.
As shown in fig. 6, the high-pressure gas is supplied from an external air compressor, is fed into the cavity between the air cap 23 and the bearing seat 9, and is ejected from the annular slit and moves upward along the outer wall of the cup 101. The rotary cup connecting seat 8 is used for fixing the air cap 23 and the bearing seat 9 and is connected with other fixing equipment. The fixing device comprises a fixed structure or a movable structure, and can be suitable for various paint spraying processes. The device is a head machine head for spraying paint on workpieces, and further comprises a feeding mechanism and an air supply mechanism, and the pneumatic rotary cup in the embodiment can be applied to handheld equipment and also can be applied to fixed equipment, wherein the fixed equipment comprises a mechanical arm or a fixed position, and the workpieces on a production line are sprayed with paint at fixed time and fixed quantity according to the control of a preset PLC program.
Example 2:
this embodiment is optimally defined based on embodiment 1 described above.
As shown in fig. 5, the rotary cup atomizer 1 has a T-like pipe structure, and a channel is reserved in the rotary cup atomizer for accommodating the oil injection rod 13. The oil injection rod 13 is inserted into the channel of the rotary cup atomizer 1 from an opening at one side, but is not contacted with the rotary cup atomizer 1, so that the influence of the high-speed rotation of the rotary cup atomizer 1 on the oil injection of the oil injection rod 13 is avoided. The rotating shaft 102 is provided with an annular flange 7 which is matched and sealed with the pneumatic rotary cup.
As shown in fig. 9 and 10, both ends of the rotary cup atomizer 1 are provided with openings, one side of the oil supplying rod 13 is connected with an external supplying mechanism, paint can be injected into the oil supplying rod 13, and the other side of the opening is used for spraying atomized paint.
The rotary cup atomizer 1 comprises a cup disc 101 and a rotating shaft 102 which are connected with each other, wherein the inner side of an opening on one side of the cup disc 101, which is close to the connection, is provided with internal threads, and the outer side of the rotating shaft 102, which is close to the connection, is provided with external threads, and the detachable connection is realized through threaded fit. The main body structure of the cup 101 is a cone structure, the end face of the opening is circular, and the opening extends inwards to form a smooth annular curved surface with gradually contracted radius, so that paint thrown out at high speed slides outwards along the annular curved surface and is thrown out from the opening edge along the axis parallel to the opening plane, and the whole atomized paint can be diffused quickly and cannot be gathered.
The inner wall of the cup disc 101 is provided with an annular mounting groove 4 for fixing the oil distributing cap 5, and the oil distributing cap 5 is clamped in the annular mounting groove 4 to realize detachable connection, so that the oil distributing cap is convenient to clean and detach. The outer wall of the side, far away from the cup plate 101, of the rotating shaft 102 is provided with a connecting structure with a power mechanism. Preferably, the connection structure is a screw thread, and the power mechanism is a pneumatic impeller 17 driven by high-pressure gas. The pneumatic impeller 17 is sleeved at the tail part of the rotating shaft 102 and is detachably connected through threaded fit, so that the pneumatic impeller is convenient to detach and replace.
As shown in fig. 11, the oil separating cap 5 includes a circular bottom plate and a plurality of clamping columns with equal central angles on the bottom plate, wherein clamping grooves are formed on the clamping columns near the middle part, and the clamping grooves of all the clamping columns form discontinuous annular clamping grooves. The plurality of clamping columns have certain elasticity, and can shrink to a certain extent towards the center when the oil distributing cap 5 is inserted into the cup plate 101, so that the oil distributing cap slides into the annular mounting groove 4 of the cup plate 101 to realize clamping. The paint ejected from the oil ejecting rod 13 moves upward and contacts the bottom plate, and wants to diffuse around and contact the high-speed rotating clamping column, so that the paint is thrown to the periphery at a high speed by the clamping column. Because the space between the bottom plate and the inner wall of the cup tray 101 is smaller when the oil distributing cap 5 is installed, the paint only contacts with a part of the uppermost part of the clamping column and is thrown out from the gap between the bottom plate and the cup tray 101 to fall onto the outer inner wall of the cup tray 101.
In order to restrict the spraying direction and range of paint, an air outlet for spraying high-pressure air towards the spraying position of the atomized paint is arranged around the cup disc 101, so that the atomized paint diffused to the periphery can move towards the axial direction of the cup disc 101 under the driving of the high-speed air, and the effect of restricting aggregation is achieved.
In the prior art, the air outlet is inclined towards the outer wall of the cup disc 101 to jet air, as shown in fig. 4, when the high-pressure air contacts the outer wall of the cup disc 101, part of the air directly bounces and moves outwards, and at the moment, turbulence is formed around the position where the air contacts the outer wall of the cup disc 101, so that part of the air is lost; part of the gas moves towards the opening of the cup disc 101 along the outer wall of the cup disc 101, and part of the gas is lost due to the kinetic energy loss caused by the collision of the part of the gas with the outer wall of the cup disc 101, so that although the high-speed movement state is maintained and the paint thrown out from the opening of the cup disc 101 is guided to be converged and sprayed towards the front, the atomization effect is poor, the constraint effect is poor, and the problem of paint spots or uneven paint spraying on the surface of a painted workpiece is caused.
The cup 101 is divided into an upper cone and a lower cone by the annular piece 2, and high-pressure gas can be sprayed out from the annular crack and move upwards along the outer wall of the upper cone, so that the opening edge of the cup 101 is cut, atomized paint is assisted, and the atomized paint control efficiency is improved. As shown in fig. 25, the cross section of the upper cone is an inclined plane, and the included angle between the upper cone and the outer wall of the ring member 2 is an obtuse angle, that is, the air flow is originally ejected along the annular gap, and the air flow direction in the annular gap is parallel to the axial direction of the cup 101. However, if the upper conical structure is provided, the direction of the sprayed gas is not changed, and a better effect of cutting the edge of the cup tray cannot be achieved. Therefore, by arranging the outer wall of the cup tray into a conical structure, the gas sprayed from the annular crack can move upwards along the annular piece and be guided to change direction through the upper cone, and when the gas reaches the opening plane of the cup tray, the gas can change direction again according to the aerodynamic principle and move towards the axial direction of the cup tray. And the upper cone structure can compress a certain amount of flowing gas, so that the gas density of the cutting cup disc is increased, and the atomization effect is improved.
However, the annular region outside the annular gap, adjacent to the upper cone, forms a low pressure zone B due to the high velocity of the gas flowing, which low pressure zone B causes part of the gas to flow towards this region, which affects the effect of the gas cutting the edge of the cup. In fig. 25, the circle in the figure is the marked low-voltage region B. Therefore, in this embodiment, the circular end surface of the air cap 23 with the opening is further provided with a plurality of air holes 24, the air holes 24 are communicated with the inner side of the air cap 23, and the high-pressure air in the cup body is ejected through the air holes 24 and is ejected towards the low-pressure area B of the upper cone, so that the air in the area is effectively supplemented, the normal pressure is recovered, excessive air waste is avoided, and the atomization effect is improved.
Preferably, the outer wall of the lower cone is recessed inwards to form an annular groove 3, so that the weight of the whole rotary cup atomizer 1 can be reduced, and the power requirement for rotation is reduced.
An annular O-shaped ring mounting groove 6 is formed in the outer wall of the rotating shaft 102 corresponding to each bearing 10, and an O-shaped ring is mounted in the O-shaped ring mounting groove 6. By providing the bearing 10 with an O-ring, the machining accuracy requirement of the rotating shaft 102 can be reduced, and the noise generated during high-speed rotation can be reduced. Because the entire rotary cup atomizer 1 is rotated at a high speed, if the processing accuracy of the rotation shaft 102 is poor, or if the assembly process is poor, the rotation shaft 102 swings when rotated, thereby generating noise and affecting the service life. By arranging the O-shaped ring between the rotating shaft 102 and the bearing 10, the swinging is reduced, the machining precision requirement of the rotating shaft 102 is reduced, and even if the distances between the two bearings 10 and the rotating shaft 102 are unequal, the two bearings can be connected through the O-shaped ring, the swinging is reduced, and meanwhile, the bearing 10 is convenient to detach.
The bearing seat 9 is of a cylindrical structure, a channel is formed in the center of the bearing seat along the axial direction, annular bearing 10 mounting sinking grooves with diameters larger than the diameters of the cross sections of the channel are formed in the openings at the two ends of the channel, and the bearing 10 can be directly in the bearing 10 mounting sinking grooves through interference fit. And then one end of the bearing 10 of the rotary cup atomizer 1 is inserted from an opening at one side, so that the two bearings 10 are sleeved on the bearing 10.
As shown in fig. 3, 7 and 8, a sinking groove is arranged on the bearing 10 on one side, close to the cup disc 101, of the passage of the bearing seat 9, and extends outwards to form an annular expanding cavity 11, a section of the annular expanding cavity 11, which is cut in the axial direction, is of a conical structure, and one end with a larger opening is close to the cup disc 101. And an annular groove A which is in contact with the air cap 23 to form annular seal is formed on the outer wall of the opening at the larger side of the annular expansion cavity A11, and when the air cap 23 covers the bearing seat 9 on the rotary cup connecting seat 8 and is in contact with the annular groove A of the bearing seat 9 to form seal. The positioning ring matched with the annular groove A is arranged on the air cap, so that the positioning ring is in contact with the annular groove A to achieve a sealing effect, and the installation connection position of the air cap can be limited, thereby ensuring the precision of the annular crack and reducing the processing difficulty. The annular gap is a gap with uniform width when gas is sprayed, so that the gas sprayed by the annular gap is more uniform.
The end face of the bearing seat 9, which is far away from the opening of the annular expanding cavity 11, also extends outwards to form an annular expanding cavity 12B, the pneumatic impeller 17 is placed in the annular expanding cavity 12B, and one end of the rotating shaft 102, which is far away from the cup disc 101, penetrates through a channel of the bearing seat 9 and is in transmission connection with the pneumatic impeller 17 arranged in the annular expanding cavity 12B. The opening end surface of the B-ring expansion cavity 12 is propped against the end surface of one side of the rotary cup connecting seat 8 to form a seal due to the fact that the bearing seat 9 is pressed down by the air cap 23. The high-pressure gas existing between the bearing seat 9 and the air cap 23 is ejected through the plurality of vent holes provided on the a annular expansion chamber 11 into the annular nip formed by the cup 101 and the air cap 23. The shape of the whole bearing seat 9 is convenient for the installation and maintenance of the bearing 10, and meanwhile, the outer part of the annular expanding cavity A11 formed by extending the bearing seat 9 is used as a positioning structure of the air cap 23, so that the processing is easy to control the precision, the production is simplified, and the annular crack is more uniform in precision and easy to control.
As shown in fig. 12-17 and fig. 19-20, the rotary cup connecting seat 8 is also in a cylindrical structure, the circular end faces of the rotary cup connecting seat 8 are all inwards recessed to form a circular connecting seat sinking groove, and a plurality of A bumps protruding towards the circle center of the connecting seat sinking groove are uniformly arranged on the inner wall of the connecting seat sinking groove on one side. The spacing between the adjacent A convex blocks is equal, so that an annular toothed belt structure is formed on the inner wall of the connecting seat sink. And a plurality of B protruding blocks protruding outwards and being matched with the A protruding blocks to limit are uniformly arranged on the outer wall of the B annular expansion cavity 12 close to the opening at equal central angles, and the diameter of the outer ring of the annular toothed belt formed by the B protruding blocks is equal to the inner diameter of the groove of the connecting seat provided with the A protruding blocks. When the bearing seat 9 is sunk into the connecting seat sink, the A lug and the B lug are contacted with each other to achieve the effect of limiting rotation.
It should be noted that the number of the adjacent a bumps is the same as that of the adjacent B bumps, as shown in fig. 15, it can be seen that all the a bumps and all the B bumps are in one-to-one contact in the figure, so as to improve the structural strength. But in order to reserve the air passage, the gap between the adjacent A bumps is larger than the thickness of the B bump.
As shown in fig. 12, 19 and 20, the rotating cup connecting seat 8 is further provided with a plurality of air passages, including a rotating intake passage 14, a rotating exhaust passage 15 and an injection intake passage 16. When the bearing seat 9 is propped against the connecting seat sinking groove of the rotary cup connecting seat 8, the annular expanding cavity 12 of the B forms a closed space. And the rotary air inlet 14 and the rotary air outlet 15 are communicated with the annular expanding cavity 12, the rotary air inlet 14 is arranged on a concentric circle close to the outer side, and the rotary air outlet 15 is arranged on a concentric circle close to the inner side. And the axial position of the rotary cup connecting seat 8 is provided with an independent feeding channel, and one end of the oil injection rod 13 is arranged in the feeding channel and is fed by an externally connected oil pipe. And annular fan blades are arranged along the outer part of the end face of one side of the pneumatic impeller 17, and the width of each fan blade is smaller than the radius of the pneumatic impeller 17. The rotary air inlet 14 corresponds to the fan blades, and the rotary air inlet 14 is provided in two stages, wherein the inner diameter of the part near one side of the air impeller 17 is reduced and the axis is arranged towards the direction of pushing the fan blades to move to one side, so that one section near the air impeller 17 is a passage obliquely arranged, so that the high-pressure air entering the annular expansion cavity 12 of the B is firstly contacted with the fan blades and pushes the air impeller 17 to rotate. And the contacted air moves toward the center of the wind impeller 17 and is discharged from the rotary exhaust duct 15.
And the injection air inlet 16 is arranged on the concentric circle of the outermost rotary cup connecting seat 8, and the injection air inlet 16 is communicated with the space between the bearing seat 9 and the air cap 23. As shown in the figure, the jet air inlet channel 16 is just communicated with the gap between the A lug and the B lug at any joint and is separated from the B annular expansion cavity 12, so that an air channel is not required to be independently arranged on the bearing seat 9, and the production process is simplified. In this embodiment, only one preferable arrangement scheme of defining multiple air passages is provided, and the injection air inlet 16 and the rotary air inlet 14 can adopt the same air passage structure without an air outlet, so that the air driving the air impeller 17 to rotate can continue to move towards the annular gap, but the effect is poor, and compared with the scheme in this embodiment, the flow rate of the air sprayed from the annular gap is obviously reduced, although the effect of guiding the paint liquid drops can be achieved.
It should be noted that, as shown in fig. 6, 22 and 26, the air cap 23 of the present embodiment includes an outer air cap and an inner air cap, where an opening on one side of the inner air cap is connected to the rotary cup connecting seat 8, and an annular gap is formed between an opening on the other side of the inner air cap and the outer wall of the cup plate 101. The outer air cap covers the outer side of the inner air cap, a plurality of through grooves parallel to the axis of the inner air cap are arranged on the inner air cap, and the through grooves are communicated with the air holes 24. As can be clearly seen in fig. 26, the outer air cap and the inner air cap cover the outer side of the inner air cap so as to abut against the side edge of each through groove, so that each through groove forms an independent air passage, and the air in the rotary cup body enters from the port on one side of the through groove close to the rotary cup connecting seat 8 and finally is discharged from the air hole 24.
And one rotary air inlet passage 14 is arranged, and two rotary air outlet passages 15 are arranged. The number of the injection air inlets 16 is two, the circle centers of the injection air inlets 16 are arranged on the same circular ring and symmetrically arranged relative to the circle centers, so that the air inlet efficiency is improved, and the gas distribution is more uniform.
The installation method of the embodiment comprises the following steps: firstly, two bearings 10 are respectively arranged in two bearing 10 installation sinking grooves of a bearing seat 9, and then one end of a rotating shaft 102 of the rotary cup atomizer 1 is inserted into a channel of the bearing seat 9 from one side of an annular expanding cavity 11. And then the oil inlet end with external threads of the oil injection rod 13 is fixed on the central channel of the rotary cup connecting seat 8, so that the oil injection rod 13 is fixedly connected with the rotary cup connecting seat 8. And penetrate oil stick 13 and insert and revolve and be equipped with the seal groove on the cup connecting seat 8 one end outer wall, penetrate oil stick 13 and revolve cup connecting seat 8 fixed connection the oil feed end and the central channel inner wall that revolves cup connecting seat 8 of oil stick 13 and form sealedly to prevent the paint seepage.
Then the pneumatic impeller 17 is arranged in the annular expanding cavity 12B and is fixedly connected with the end part of the rotating shaft 102 penetrating through the channel through threads, the whole bearing seat 9 is arranged on the rotating cup connecting seat 8, one side with the protruding block B is sunk into the connecting seat sinking groove provided with the protruding block A, the connecting seat sinking groove is inserted and placed in the hollow space, and the oil injection rod 13 fixed on the rotating cup connecting seat 8 is inserted into the whole rotating cup atomizer 1 from one end of the rotating shaft 102. And then the oil distributing cap 5 is clamped in the cup plate 101.
At this time, the wind-driven impeller 17 is in threaded fit connection with the rotating shaft 102, and the wind-driven impeller 17 is provided with a blocking ring protruding outwards around the center on the opposite circular surface provided with the fan blades. An annular flange 7 is provided on one side of the shaft 102 against the upper bearing 10, and the air impeller 17 is fixed to the shaft 102 and holds the blocking ring against the lower bearing 10, thereby fixing the shaft 102 between the two bearings 10. The thickness of the annular expansion cavity 12 is slightly larger than that of the pneumatic impeller 17, so that a certain interval is reserved between the pneumatic impeller 17 and the rotary cup connecting seat 8 when the bearing seat 9 is propped against the rotary cup connecting seat 8, namely the pneumatic impeller 17 cannot contact with the rotary cup connecting seat 8 when rotating.
Finally, an inner air cap is installed, the bearing seat 9 is tightly pressed and completely covered, the cup plate 101 penetrates out of the opening at the upper end of the inner air cap 23, the annular piece 2 is matched with the circular opening at the upper end of the air cap 23 to form an annular crack, and then the outer air cap is sleeved on the outer side of the inner air cap, so that all parts are assembled. As shown in the figure, external high-pressure air enters from the rotary air inlet channel 14 and moves towards the fan blade at a high speed through a channel which is obliquely arranged to push the air impeller 17 to rotate, so that the whole rotary cup atomizer 1 is driven to rotate at a high speed. Then high-pressure gas enters the space between the bearing seat 9 and the air cap 23 from the injection air inlet channel 16 at the same time, enters the space between the bearing seat 9 and the rotary cup atomizer 1 through the vent holes, and finally is ejected out of the annular crack along the outer wall of the cup tray 101, compared with the prior art, the loss of air pressure and air quantity can be reduced, and therefore the atomization effect is improved.
Example 3:
the present embodiment is optimized and limited based on the above embodiment 2, as shown in fig. 21 and 24, in which the air cap 23 is optimized to have a single-layer structure, and the original inner air cap and outer air cap structures are eliminated, thereby reducing the cost and the installation process. Meanwhile, a plurality of through grooves are formed in the outer wall of the bearing seat 9, so that the weight is reduced, and the die is easy to open. And the space of the annular expanding cavity 11A is reduced, and the distance between the two bearings 10 is increased, so that the distance between the cup plate 101 and the bearings 10 is reduced, the stress of the bearings 10 is reduced, the service life of the bearings 10 is prolonged, and the bearings are more stable in operation.
Meanwhile, the air holes 24 are directly arranged on the annular end surface of the air cap 23, which is close to one side of the cup plate 101, and are uniformly arranged with the center of the opening of the air cap 23 at the side as the center of a circle.
Example 4:
the present embodiment is optimized and limited based on the above embodiment 3, and as shown in fig. 18 and 23, the air cap 23, the rotary cup connecting seat 8, the annular expansion chamber a 11, the annular expansion chamber B12 and the air impeller 17 are further reduced, so that the weight is lighter and the operation is convenient. Wherein the rotary exhaust passage 15 and the injection inlet passage 16 on the rotary cup connecting seat 8 are reduced to one, thereby facilitating the control of the volume.
Example 5:
the embodiment discloses a handheld cup rotating spray gun, as shown in fig. 1 and fig. 2, the pneumatic cup rotating structure of cup rotating of embodiment 4 is adopted, the cup rotating spray gun comprises a handheld gun body and a cup rotating body, the cup rotating body comprises a cup rotating atomizer 1, a cup rotating connecting seat 8, a bearing seat 9 and an air cap 23, and the cup rotating atomizer 1 is rotationally connected with the bearing seat 9 through a bearing 10. The bearing seat 9 is arranged on the rotary cup connecting seat 8, and the bearing seat 9 is covered and pressed on the rotary cup connecting seat 8 through an air cap 23 connected with the rotary cup connecting seat 8. The rotary cup atomizer 1 is internally provided with an oil injection rod 13 and an oil distribution cap 5, and the oil distribution cap 5 is arranged at a paint emission end close to the oil injection rod 13. The rotary cup atomizer 1 is also connected with a power mechanism, and is driven by the power mechanism to rotate at a high speed, so that paint sprayed out of the oil injection rod 13 is thrown out at a high speed under the action of centrifugal force through the oil separating cap 5, and the effect of preliminary atomization is achieved. The air cap 23 is provided with an opening at one side far away from the rotary cup connecting seat 8, and a circle of annular piece 2 with a smooth cylindrical outer wall is arranged on the outer wall close to the opening of the cup plate 101. The annular piece 2 can be matched with the shell structure of the pneumatic rotary cup to guide high-pressure gas in the pneumatic rotary cup to be sprayed out. The shell structure is an air cap 23, the rotary cup atomizer 1 is arranged in the air cap 23, the cup 101 is ejected from an upper opening of the air cap 23, and an annular crack is formed between the outer wall of the annular piece 2 and the corresponding opening of the air cap 23. While the high-pressure gas can fill the space between the gas cap 23 and the cup atomizer 1 and rapidly eject from the formed annular slit. At this time, the gas is restrained by the annular gap so as to move along the outer wall of the annular member 2, thereby reducing turbulence, and more gas flow can be generated at the opening edge of the cup plate 101 under the same gas pressure condition, and meanwhile, the flow velocity loss is smaller, so that the atomization and restraint effects are improved. The high-pressure gas is supplied by an external air compressor, is fed into the cavity between the air cap 23 and the bearing seat 9, and is ejected from the annular slit and moves upwards along the outer wall of the cup 101. The rotary cup connecting seat 8 is a structure for fixing the air cap 23 and the bearing seat 9, is connected with the hand-held gun body and is fixed on the hand-held gun body. The hand gun body is internally provided with an oil supply pipeline and an air supply pipeline which are respectively connected with the rotary cup connecting seat 8 and used for providing paint and high-pressure air for the pneumatic rotary cup. The handheld structure is convenient to operate, and meanwhile, the pneumatic rotary cup structure has a good atomization effect.
Example 6:
the embodiment is optimized and limited based on the embodiment 9, the hand-held gun body comprises a handle 20 and a gun shell 21, the gun shell 21 and the handle 20 are connected to form an integrated structure, the gun shell 21 is of a hollow structure, a gun chamber is arranged in the gun shell 21, a feed valve 19 is arranged in the gun chamber, a rotating handle 18 hinged with the gun shell 21 is arranged outside the gun shell 21, and the rotating handle 18 is connected with the feed valve 19 and controls the opening and closing of the feed valve 19 by rotating the rotating handle 18.
As shown in fig. 21, the feeding valve 19 has a cylindrical structure with an upper nozzle and a lower nozzle, which are hollow structures and are internally provided with a piston, wherein the lower nozzle is communicated with the interior of the handle 20, and is connected to an external oil pipe from an opening provided at the bottom of the handle 20, and the oil pipe penetrates into the handle 20 and is communicated with the lower nozzle. And the upper pipe orifice is communicated with a feeding channel arranged on the rotary cup connecting seat 8 to provide paint for the rotary cup atomizer 1. And a connecting rod 22 is arranged on the piston, and the connecting rod 22 penetrates out of the gun shell 21 and is hinged with the rotary handle 18. And a return spring is further arranged in the feed valve 19, and a thrust force always facing the outer side of the gun shell 21 is provided for the connecting rod 22 through the return spring, so that the rotary handle 18 keeps moving towards the side far away from the handle 20 and is blocked at one end far away from the handle 20 when no external force is received. At this time, the piston is in a closed state, the upper and lower nozzles of the feed valve 19 are not communicated, and the handle 20 is held by the handle 18 to rotate towards one side of the handle, so that the connecting rod 22 is pushed to move inwards, and the piston is pushed to open, so that the upper and lower nozzles form a passage. A hook is also arranged on the upper part of the gun shell 21, so that the gun shell can be hung at a fixed position when the device is not used, and is convenient to operate and take.
Preferably, in order to facilitate disassembly and assembly and later maintenance, the handle 20 and the gun housing 21 are two parts which are mutually buckled and fixedly connected through bolts, the rotary cup connecting seat 8 is provided with a connecting groove, the rotary cup connecting seat 8 is firstly arranged on one part during installation, the connecting groove is clamped with a corresponding protrusion arranged on the inside of the gun housing 21, and the other part is aligned and buckled and fixed through bolts, so that a complete handheld rotary cup spray gun is formed.
Example 7:
the present invention also provides another embodiment, as shown in fig. 27 and 1. The pneumatic rotary cup structure comprises a rotary cup body and a rotary cup atomizer 1 arranged in the rotary cup body, wherein a power mechanism driven by external air supply is arranged in the rotary cup body, and the power mechanism drives the rotary cup atomizer 1 to rotate and atomize paint liquid input into the rotary cup atomizer 1; the outside of cup atomizer 1 is provided with the air feed structure that is used for converging the paint liquid after atomizing soon.
The air supply structure is a plurality of annular air holes 24 which are arranged on the rotary cup body and provide high-pressure air flow towards the inclined plane of the outer wall of the rotary cup atomizer 1, and the air holes 24 are communicated with a high-pressure air chamber in the rotary cup body. The high-pressure air flow provided by the air hole 24 directly flows to the rotary cup atomizer 1 quickly, and the air flow contacts with the inclined surface of the outer wall of the rotary cup atomizer 1 and flows along the inclined surface of the outer wall of the rotary cup atomizer 1 at a high speed to be intersected with the centrifugally atomized paint in the inner wall of the rotary cup atomizer 1, so that atomized paint jet is formed. The direction of the air hole 24 is intersected with the inclined plane obtuse angle of the outer wall of the rotary cup atomizer 1, so that smooth transition guiding can be realized, the influence of the air flow speed is small, the interference degree is low, turbulent flow is effectively avoided, and a good paint atomization convergence effect can be obtained. The high-pressure air chamber is a chamber which is arranged in the rotary cup body and is communicated with an air source of external air supply respectively and outputs high-pressure air through the air holes, so that the air flow speed attenuation caused by the narrow air source channel can be effectively prevented, and the paint spraying effect is reduced.
The invention is not limited to the alternative embodiments described above, but any person may derive other various forms of products in the light of the present invention. The above detailed description should not be construed as limiting the scope of the invention, which is defined in the claims and the description may be used to interpret the claims.
Claims (4)
1. The utility model provides a pneumatic cup structure that revolves which characterized in that: the paint spraying device comprises a rotary cup body and a rotary cup atomizer (1) arranged in the rotary cup body, wherein a power mechanism driven by external air supply is arranged in the rotary cup body, and the power mechanism drives the rotary cup atomizer (1) to rotate and atomize paint liquid input into the rotary cup atomizer (1); the outer side of the rotary cup atomizer (1) is provided with an air supply structure for converging and atomizing paint liquid;
the gas supply structure specifically adopts an annular gap formed by the outer part of the rotary cup atomizer (1) and the opening of the rotary cup body for high-pressure gas in the rotary cup body to be sprayed out of the annular gap and to restrain paint from gathering;
the rotary cup body comprises a shell and a rotary cup connecting seat (8), wherein the shell and the rotary cup connecting seat are mutually buckled to form an inner cavity, and a bearing seat (9) is arranged in the inner cavity; the rotary cup atomizer (1) is inserted into the bearing seat (9) and is rotationally connected with the bearing seat (9) through a bearing (10) arranged in the bearing seat (9), and the rotary cup atomizer (1) and an opening of the shell form an annular crack;
A channel for the rotary cup atomizer (1) to pass through is arranged on the bearing seat (9), one end of the channel expands to form an annular expanding cavity A (11) contacted with the shell, and the other end expands to form an annular expanding cavity B (12) contacted with the rotary cup connecting seat (8); one end, far away from oil injection, of the rotary cup atomizer (1) is inserted into the channel from the annular expanding cavity (11) of the A, penetrates through the channel and is in transmission connection with a power mechanism arranged in the annular expanding cavity (12) of the B;
the rotary cup atomizer (1) comprises cup discs (101) which are connected with each other and a rotating shaft (102) which is in transmission connection with a power mechanism in the pneumatic rotary cup, and the annular piece (2) is arranged on the cup discs (101); an annular mounting groove (4) is formed in the cup disc (101) near the joint with the rotating shaft (102), and an oil distributing cap (5) is arranged in the annular mounting groove (4);
the cup disc (101) is divided into an upper cone and a lower cone by the annular piece (2), and the included angle between the outer wall of the upper cone and the annular piece (2) is an obtuse angle;
a rotary air inlet channel (14) and a rotary air outlet channel (15) which are communicated with the annular expansion cavity (12) are also arranged on the rotary cup connecting seat (8); the high-pressure gas enters the annular expansion cavity (12) B through the rotary air inlet channel (14) and pushes the power mechanism to drive the rotary cup atomizer (1) to rotate; the power mechanism is a pneumatic impeller (17); the rotary cup connecting seat (8) is also provided with a jet air inlet channel (16) communicated with a cavity between the outer side of the bearing seat (9) and the shell; the high-pressure gas enters the shell through the injection air inlet channel (16) and is sprayed out of the annular crack; the shell is an air cap (23) which is connected with the rotary cup connecting seat (8) and supports the bearing seat (9) on the rotary cup connecting seat (8), and an opening which forms an annular crack with the annular piece is arranged on one side, away from the bearing seat (9), of the air cap (23).
2. A pneumatic cup structure according to claim 1, wherein: the rotary cup body is provided with an air pressure compensation structure which performs air pressure compensation towards the outer wall of the rotary cup atomizer (1).
3. A pneumatic cup structure according to claim 2, wherein: the air pressure compensation structure is an air hole (24) which is arranged on the rotary cup body and guides high-pressure air in the rotary cup body to be sprayed out for air pressure compensation.
4. A pneumatic cup structure according to claim 1, wherein: the rotary cup connecting seat (8) is provided with an oil injection rod (13) inserted into the rotary cup atomizer (1) from one end of the rotating shaft (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197224.0A CN109395903B (en) | 2018-10-15 | 2018-10-15 | Pneumatic cup rotating structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197224.0A CN109395903B (en) | 2018-10-15 | 2018-10-15 | Pneumatic cup rotating structure |
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| CN109395903A CN109395903A (en) | 2019-03-01 |
| CN109395903B true CN109395903B (en) | 2024-03-08 |
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| CN201811197224.0A Active CN109395903B (en) | 2018-10-15 | 2018-10-15 | Pneumatic cup rotating structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110293012B (en) * | 2019-06-26 | 2020-10-30 | 浙江瑞丰五福气动工具有限公司 | Synchronous feeding type paint spray gun |
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| JPH09285742A (en) * | 1996-04-19 | 1997-11-04 | Abb Ind Kk | Rotary-atomizer head type coater |
| JPH10216567A (en) * | 1996-12-03 | 1998-08-18 | Abb Ind Kk | Rotary atomization head type coater |
| CN1539557A (en) * | 2003-04-21 | 2004-10-27 | 日本兰氏公司 | Rotary atomizing coating machine |
| WO2005115636A1 (en) * | 2004-05-27 | 2005-12-08 | Abb K.K. | Method for controlling spray pattern of rotary atomizing head type coating device and rotary atomizing head type coating device |
| CN105073269A (en) * | 2013-07-12 | 2015-11-18 | Abb株式会社 | Rotating atomizer head coater |
| CN108144757A (en) * | 2018-03-13 | 2018-06-12 | 东莞市飞吻涂装设备科技有限公司 | A kind of electrostatic rotating cup spray gun |
| CN209334000U (en) * | 2018-10-15 | 2019-09-03 | 杨建林 | A kind of pneumatic rotation cup structure |
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2018
- 2018-10-15 CN CN201811197224.0A patent/CN109395903B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09285742A (en) * | 1996-04-19 | 1997-11-04 | Abb Ind Kk | Rotary-atomizer head type coater |
| JPH10216567A (en) * | 1996-12-03 | 1998-08-18 | Abb Ind Kk | Rotary atomization head type coater |
| CN1539557A (en) * | 2003-04-21 | 2004-10-27 | 日本兰氏公司 | Rotary atomizing coating machine |
| WO2005115636A1 (en) * | 2004-05-27 | 2005-12-08 | Abb K.K. | Method for controlling spray pattern of rotary atomizing head type coating device and rotary atomizing head type coating device |
| CN105073269A (en) * | 2013-07-12 | 2015-11-18 | Abb株式会社 | Rotating atomizer head coater |
| CN108144757A (en) * | 2018-03-13 | 2018-06-12 | 东莞市飞吻涂装设备科技有限公司 | A kind of electrostatic rotating cup spray gun |
| CN209334000U (en) * | 2018-10-15 | 2019-09-03 | 杨建林 | A kind of pneumatic rotation cup structure |
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| CN109395903A (en) | 2019-03-01 |
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