CN111250316B

CN111250316B - Special-shaped cavity spraying device

Info

Publication number: CN111250316B
Application number: CN201911314269.6A
Authority: CN
Inventors: 卢英发; 万亮进; 翁大胜
Original assignee: Individual
Current assignee: Yangzhou Jiangdu Jiangyang Coating Engineering Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2021-03-19
Anticipated expiration: 2039-12-19
Also published as: CN111250316A

Abstract

The invention discloses a spraying device for a special-shaped cavity, which comprises a spraying table, wherein a screw rod sliding block is arranged in the middle of the spraying table in a sliding and clamping manner, a lifting screw rod penetrates through a screw hole of the screw rod sliding block, a spraying head is arranged at the top end of the lifting screw rod, an angle rotating mechanism is arranged on the spraying head, the bottom end of the lifting screw rod is rotatably penetrated and fixed in the central position of the lifting table, the lifting table is hung on the bottom surface of the spraying table in a sliding manner through a plurality of sections of telescopic rods, a wiring channel for wiring is vertically arranged in the lifting screw rod, and a spraying hole in a spraying ball is communicated with an external feeding device; the spraying head can penetrate into the special-shaped cavity to realize the spraying operation of the small-opening special-shaped cavity, the spraying head can translate and perform multi-angle and multi-direction translation operation, the problems that the spraying operation of various special-shaped cavities is inconvenient, and the universal spraying equipment cannot meet the requirement of the spraying operation of various special-shaped cavities are solved, and the spraying efficiency is greatly improved.

Description

Special-shaped cavity spraying device

Technical Field

The invention particularly relates to a spraying device, in particular to a spraying device for a special-shaped cavity.

Background

In the surface spraying treatment process of a workpiece, a plurality of workpieces with inner cavities are often sprayed, the spraying operation of the inner cavities can be completed by a conventional spray gun through a conventional circular cavity or polygonal cavity, but for some cavities with small openings and large inner cavity space, the spray gun cannot spray deeply into the inner cavities, and at present, a plurality of spray heads with small probes are also available in the market, and although the spray heads can penetrate into the inner cavities, the inner cavities cannot be sprayed in a good covering manner.

In addition, besides the special-shaped cavity with a small opening and a large inner cavity, a plurality of long and narrow or irregular inner cavities exist, for example, the cavity with an I-shaped section is long and narrow and staggered, the inner walls of the cavities are mutually isolated, the inner cavity cannot be sprayed at one time by common fixed-point spraying, the spraying needs to be repeatedly carried out along the transverse movement inside the cavity, and the operation difficulty of integrally moving the spray head inserted into the cavity is large.

Therefore, in order to solve the above problems, a cavity spraying device is needed, which can perform overall spraying on a cavity with a small opening and a large inner cavity space and can flexibly translate in a long and narrow special-shaped cavity.

Disclosure of Invention

The invention aims to provide a spraying device for a special-shaped cavity, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a spraying device for a special-shaped cavity comprises a spraying platform, wherein a movable sliding opening which is communicated up and down is formed in the middle of the spraying platform, a screw rod sliding block is arranged in the movable sliding opening in a sliding and clamping manner, a screw hole is vertically formed in the center of the screw rod sliding block, a lifting screw rod vertically penetrates through an internal thread of the screw hole, a spraying head is arranged at the top end of the lifting screw rod, a spraying ball is arranged at the top end of the spraying head in a sliding and clamping manner, an angle rotating mechanism for a spraying ball corner is arranged in the spraying head, the bottom end of the lifting screw rod is rotatably arranged at the central position of the lifting platform in a penetrating manner, a lifting device for driving the lifting screw rod to rotate is arranged on the lifting platform, two sides of the lifting platform are suspended below the bottom surface of the spraying platform through a plurality of sections of telescopic rods, the top, the lifting screw rod is vertically provided with a wiring channel for wiring, the spraying holes in the spraying balls are communicated with an external feeding device through a spraying pipe, and the spraying pipe is led out from a bottom port of the lifting screw rod through the wiring channel.

Further scheme: the left side wall and the right side wall of the interior of the movable sliding opening are provided with sliding grooves, the left side wall and the right side wall of the screw rod sliding block are respectively fixed with a movable sliding block, and the movable sliding blocks are slidably clamped in the sliding grooves.

Further scheme: be equipped with drive lead screw slider self-sliding's automatic sliding mechanism in the spraying platform, automatic sliding mechanism includes driving motor, drive gear, gear chamber and spout, gear chamber level is seted up in the inner wall of spraying platform one side spout, driving motor installs on the bottom surface of spraying platform, and driving motor's motor shaft rotates and wears to establish into gear chamber and level and is fixing drive gear, the spout is fixed on the lateral wall of gear chamber one side removal slider, drive gear links to each other with slider rack toothing, and the longitudinal length of the removal slider of drive gear relative position is greater than the longitudinal length of lead screw slider.

Further scheme: elevating gear includes elevator motor, lifting gear and lead screw gear, the cover is being established and is being fixed the lead screw gear on the wall of lift lead screw bottom pole, and the elevating platform level sets up in spraying platform bottom surface below, invert the installation elevator motor on the top surface of elevating platform, elevator motor's motor shaft rotates and wears to establish the elevating platform and fix the lifting gear at the bottom surface below level of elevating platform, the lead screw gear links to each other with the lifting gear meshing.

Further scheme: the feeding device comprises a storage box arranged on one side of the bottom of the spraying platform, a material pump is arranged on a panel of the storage box, the material pumping end of the material pump is communicated with the inner bottom of the storage box, and the discharge end of the material pump is communicated with a spraying hole of a spraying ball through a material spraying pipe.

Further scheme: the spraying device is characterized in that a clamping sliding cavity used for sliding and clamping a spraying ball is formed in the top of the spraying head, a wiring cavity used for communicating with a wiring channel is arranged below the clamping sliding cavity, a material cavity is arranged inside the spraying ball, a spraying hole is formed in the top of the material cavity, and the bottom of the material cavity is communicated with a spraying pipe through an elastic connecting pipe.

Further scheme: the angle slewing mechanism is including fixing the sphere rack at the spraying ball lateral wall, sink the lateral wall that sets up the spraying ball in the sphere rack, sphere rack outer wall can influence the rotation of spraying ball, the motor gear is being connected in the sphere rack meshing, motor gear links to each other with the motor shaft that turns to the motor is fixed, it all installs at the motor intracavity with the motor gear to turn to the motor, the motor cavity is hidden to be seted up inside the spraying head.

Further scheme: the bottom surface of spraying platform is supported by many support columns, annular platform rotation groove has been seted up to the bottom surface outer lane of spraying platform, the support column distributes with platform rotation groove central line circumference and sets up, the top of support column is established at the platform through joint slider slip card and is rotated the inslot.

Further scheme: the bottom surface of spraying platform is supported by many support columns, the controller that is used for controlling angle slewing mechanism, elevating gear and feedway is installed to support column one side, and the controller links to each other with angle slewing mechanism, elevating gear and feedway's power end and control end electricity respectively through the control power cord, the top of spraying ball is provided with distance sensor, and distance sensor's signal output part links to each other with the input electricity of controller through the control power cord.

Compared with the prior art, the invention has the beneficial effects that: the spraying head can penetrate into the inside of the special-shaped cavity body to realize the spraying operation of the small-opening special-shaped cavity body, the spraying ball on the spraying head can rotate to realize comprehensive spraying and covering on the special-shaped cavity body with a larger inner cavity, for the long and narrow special-shaped cavity body with a larger transverse distance, the spraying head can realize the horizontal translation action under the driving of the screw rod sliding block, the multi-angle and multi-direction translation operation can be realized by matching with the rotatable spraying platform, the common spraying operation of the special-shaped cavity bodies with an internal I shape and the like can be finished, the problems that the spraying operation of the inside of various special-shaped cavity bodies is inconvenient, the universal spraying equipment cannot meet the requirements of the spraying operation of various special-shaped cavity bodies are solved.

Drawings

Fig. 1 is a schematic structural diagram of a spraying device with a special-shaped cavity.

Fig. 2 is a schematic structural diagram of a top view of the spraying device with the special-shaped cavity.

Fig. 3 is a schematic structural diagram of a spray head in the spray device with the special-shaped cavity.

Fig. 4 is a schematic structural diagram of a top view of a spray head in the spray device with the special-shaped cavity.

Fig. 5 is a schematic structural diagram of a spraying ball in the special-shaped cavity spraying device during rotation.

Fig. 6 is a schematic structural diagram of the bottom surface of the spraying platform in the spraying device for the special-shaped cavity.

In the figure: the device comprises a spraying table 1, a support column 10, a movable sliding opening 11, a sliding chute 12, a gear cavity 13, a table rotating groove 14, a clamping sliding block 15, a telescopic rod sliding chute 16, a screw rod sliding block 2, a screw hole 20, a movable sliding block 21, a sliding block rack 22, a driving motor 3, a driving gear 30, a lifting screw rod 4, a wiring channel 40, a screw rod gear 41, a spraying head 5, a spraying ball 50, a spraying hole 51, a clamping sliding cavity 52, a wiring cavity 53, a motor cavity 54, a steering motor 55, a motor gear 56, a spherical rack 57, an elastic connecting pipe 58, a lifting table 6, a multi-section telescopic rod 60, a lifting motor 61, a lifting gear 62, a storage box 7, a material pump 70, a spraying pipe 71, a controller 8 and a control power.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 6, in an embodiment of the present invention, a spraying device for a special-shaped cavity includes a spraying table 1, a moving sliding opening 11 penetrating up and down is formed in a middle portion of the spraying table 1, a screw rod slider 2 is slidably clamped in the moving sliding opening 11, a screw hole 20 is vertically formed in a center of the screw rod slider 2, a lifting screw rod 4 is vertically inserted into an internal thread of the screw hole 20, a spraying head 5 is installed at a top end of the lifting screw rod 4, a spraying ball 50 is slidably clamped at a top end of the spraying head 5, an angle rotating mechanism for rotating the spraying ball 50 is arranged in the spraying head 5, a bottom end of the lifting screw rod 4 is rotatably inserted and fixed at a central position of the lifting table 6, a lifting device for driving the lifting screw rod 4 to rotate is installed on the lifting table 6, two sides of the lifting table 6 are suspended below a bottom surface of the spraying table 1 through a plurality of telescopic rods, the telescopic rod sliding chutes 16 are formed in two sides of the bottom surface of the spraying table 1, the telescopic rod sliding chutes 16 are parallel to the movable sliding port 11, the lifting screw rod 4 is vertically provided with a wiring channel 40 for wiring, the spraying holes 51 on the spraying balls 50 are communicated with an external feeding device through a spraying pipe 71, and the spraying pipe 71 is led out from a bottom port of the lifting screw rod 4 through the wiring channel 40.

Remove spout 12 has been seted up to lateral wall about 11 is inside, be fixed with respectively on the lateral wall about lead screw slider 2 and remove slider 21, it establishes in spout 12 to remove slider 21 slip card, the lead screw slider 2 that sets up is established in removing spout 11 through removing slider 21 and spout 12 slip card, lead screw slider 2 is whole can slide in removing spout 11, lead screw slider 2 drives lift lead screw 4 when removing spout 11 and slide, lift lead screw 4 is connected as an organic whole with elevating platform 6, consequently elevating platform 6 drives multistage telescopic link 60, the bottom that follows up lead screw slider 2 and slide together at spraying platform 1 in telescopic link spout 16 is passed through joint slider 15 on multistage telescopic link 60 top.

Be equipped with the automatic sliding mechanism of 2 self-sliding of drive lead screw slider in the spraying platform 1, automatic sliding mechanism includes driving motor 3, drive gear 30, gear chamber 13 and spout 12, gear chamber 13 level is seted up in the inner wall of 1 one side spout 12 of spraying platform, driving motor 3 installs on the bottom surface of spraying platform 1, and driving motor 3's motor shaft rotates and wears to establish in gear chamber 13 and the level is fixing drive gear 30, spout 12 is fixed on the lateral wall of 13 one side removal sliders 21 in gear chamber, drive gear 30 links to each other with the meshing of slider rack 22, and slider rack 22 is fixed on the lateral wall that removes slider 21, and the longitudinal length of the removal slider 21 of drive gear 30 relative position is greater than the longitudinal length of lead screw slider 2, and here mainly guarantees that slider rack 22 has sufficient length and drive gear 30 meshing camera, guarantees that lead screw slider 2 realizes a quantitative displacement through the effect of slider rack 22 with drive gear 30.

The lifting device comprises a lifting motor 61, a lifting gear 62 and a screw rod gear 41, the screw rod gear 41 is sleeved and fixed on the bottom end rod wall of the lifting screw rod 4, the lifting platform 6 is horizontally arranged below the bottom surface of the spraying platform 1, the lifting motor 61 is arranged on the top surface of the lifting platform 6 in an inverted manner, a motor shaft of the lifting motor 61 penetrates through the lifting platform 6 in a rotating manner, the lifting gear 62 is horizontally fixed below the bottom surface of the lifting platform 6, the screw rod gear 41 is meshed and connected with the lifting gear 62, therefore, the lifting motor 61 is arranged to drive the lifting screw rod 4 to rotate through the lifting gear 62 and the screw rod gear 41, when the lifting screw rod 4 rotates, as the screw rod sliding block 2 is integrally clamped in the movable sliding opening 11, the screw rod sliding block 2 cannot rotate, therefore, according to different steering directions of the lifting motor 61, the lifting screw rod 4 can slide up and down in the screw hole 20 of, in the lifting process of the lifting screw rod 4, the lifting screw rod 4 rotates, so that the lifting screw rod 4 drives the spraying head 5 at the top end of the lifting screw rod 4 to rotate together in the lifting process, and the spraying ball 50 on the spraying head 5 sprays the inner cavity of the workpiece in a spiral lifting mode during working.

The feeding device comprises a storage box 7 arranged on one side of the bottom of the spraying platform 1, a material pump 70 is arranged on the panel of the storage box 7, the material pumping end of the material pump 70 is communicated with the inner bottom of the storage box 7, and the discharge end of the material pump 70 is communicated with the spraying hole 51 of the spraying ball 50 through a material spraying pipe 71.

The smooth chamber 52 of joint that is used for sliding joint spraying ball 50 is seted up at the top of spray head 5, the smooth chamber 52 below of joint is equipped with and is used for walking the communicating line chamber 53 of line passageway 40, the inside material cavity that is equipped with of spraying ball 50, spraying hole 51 is seted up at the top of material cavity, and material cavity bottom is linked together with spray tube 71 through elasticity connecting pipe 58, and the elasticity connecting pipe 58 that sets up mainly when spraying ball 50 rotates, prevents that spray tube 71 from buckling damage, and the spraying hole 51 of this type of setting mainly is used for the flexibility of elasticity connecting pipe 58 to swing, reduces the loss of elasticity connecting pipe 58 self.

The angle slewing mechanism is including fixing the sphere rack 57 at the spraying ball 50 lateral wall, heavy lateral wall of setting spraying ball 50 in the sphere rack 57, when heavy design mainly prevents the sliding joint of spraying ball 50 and spray head 5 here, sphere rack 57 outer wall can influence the rotation of spraying ball 50, motor gear 56 is being connected in the meshing of sphere rack 57, motor gear 56 links to each other with the motor shaft of steering motor 55 is fixed, steering motor 55 and motor gear 56 are all installed in motor chamber 54, motor chamber 54 is hidden and is seted up inside spray head 5.

The working principle of the invention is as follows: when the spraying device is used, the opening of the special-shaped cavity of a workpiece faces downwards to the spraying ball 50, then the lifting device drives the lifting screw rod 4 to rotate, the lifting screw rod 4 integrally slides in the screw hole 20 of the screw rod sliding block 2 to drive the spraying ball 50 to enter the special-shaped cavity, the long and narrow lifting screw rod 4 can go deep into the special-shaped cavity with a smaller opening to be sprayed by matching with the spraying ball 50, at the moment, the feeding device is opened, the feeding device feeds the inside of the spraying ball 50 through the routing channel 40 by the material pump 70, the spraying ball 50 carries out spiral spraying along with the rotation of the lifting screw rod 4 in the lifting process, when the spraying ball 50 moves to the top position in the special-shaped cavity, the lifting motor 61 stops driving the lifting screw rod 4 to rotate, the angle rotating mechanism is driven to act, the spraying ball 50 integrally rotates, thereby realizing the spraying operation on the top in the, for example, an I-shaped or elongated cavity can slide the screw rod slide block 2 to change the position of the spraying ball 50 to realize the movement inside the cavity, wherein the automatic sliding mechanism is convenient to drive the screw rod slide block 2 to automatically move, therefore, the spraying head 5 which can go deep into the inside of the special-shaped cavity can realize the spraying operation of the small-opening special-shaped cavity, the spraying ball 50 on the spraying head 5 can rotate to realize the comprehensive spraying coverage to the special-shaped cavity with a larger inner cavity, for the special-shaped cavity with a larger transverse distance, such as a strip shape, a polygon shape or a rectangle shape, the spraying head 5 can realize the translation action in the horizontal direction under the driving of the screw rod slide block 2, the rotatable spraying platform 1 can realize the translation operation in multiple angles and multiple directions, the spraying operation of the common special-shaped cavities with the inner I shape, the rectangle shape and the like can be finished, the universal spraying equipment can not meet the requirements of spraying operation of various special-shaped cavities, the spraying efficiency is improved, and the cost of special equipment is reduced.

Example 2

This example differs from example 1 in that:

the bottom surface of the spraying platform 1 is supported by a plurality of supporting columns 10, an annular platform rotating groove 14 is formed in the outer ring of the bottom surface of the spraying platform 1, the supporting columns 10 are circumferentially distributed on the center line of the platform rotating groove 14, the top ends of the supporting columns 10 are slidably clamped in the platform rotating groove 14 through clamping sliding blocks 15, the spraying platform 1 and the supporting columns 10 are changed into a sliding connection relationship, the whole spraying platform 1 can rotate on the supporting columns 10 through the platform rotating groove 14, the overall moving direction of the screw rod sliding blocks 2 is changed, and multiple movements in a workpiece cavity are achieved.

The bottom surface of the spraying platform 1 is supported by a plurality of supporting columns 10, a controller 8 used for controlling the angle rotating mechanism, the lifting device and the feeding device is installed on one side of each supporting column 10, the controller 8 is electrically connected with the power supply ends and the control ends of the angle rotating mechanism, the lifting device and the feeding device respectively through a control power line 80, a distance sensor is arranged at the top end of the spraying ball 50, the signal output end of the distance sensor is electrically connected with the input end of the controller 8 through the control power line 80, and the distance sensor is arranged in such a way to mainly prevent the spraying ball 50 from colliding with the inner top of the special-shaped cavity.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A spraying device for a special-shaped cavity comprises a spraying table (1) and is characterized in that a movable sliding opening (11) which is communicated up and down is formed in the middle of the spraying table (1), a screw rod sliding block (2) is slidably clamped in the movable sliding opening (11), a screw hole (20) is vertically formed in the center of the screw rod sliding block (2), a lifting screw rod (4) is vertically penetrated and arranged in the screw hole (20), a spraying head (5) is installed at the top end of the lifting screw rod (4), a spraying ball (50) is slidably clamped at the top end of the spraying head (5), an angle rotating mechanism of a corner of the spraying ball (50) is arranged in the spraying head (5), the bottom end of the lifting screw rod (4) is rotatably penetrated and fixed in the central position of a lifting table (6), a lifting device used for driving the lifting screw rod (4) to rotate is installed on the lifting table (6), and two sides of the lifting table (6) are suspended below the bottom surface of, the multi-section telescopic rod (60) top is established in telescopic link spout (16) through joint slider (15) slip card, the bottom surface both sides at spraying platform (1) are seted up in telescopic link spout (16), telescopic link spout (16) with remove sliding opening (11) parallel arrangement, the inside vertical line passageway (40) of walking that are used for walking the line of offering of lift lead screw (4), spraying hole (51) on spraying ball (50) communicate with each other with outside feedway through spouting material pipe (71), spout material pipe (71) and draw forth by the bottom mouth of lift lead screw (4) through walking line passageway (40).

2. The spraying device for the special-shaped cavity according to claim 1, wherein sliding grooves (12) are formed in the left side wall and the right side wall of the interior of the movable sliding opening (11), movable sliding blocks (21) are respectively fixed on the left side wall and the right side wall of the screw rod sliding block (2), and the movable sliding blocks (21) are slidably clamped in the sliding grooves (12).

3. The special-shaped cavity spraying device as claimed in claim 2, wherein an automatic sliding mechanism for driving the screw rod sliding block (2) to automatically slide is arranged in the spraying table (1), the automatic sliding mechanism comprises a driving motor (3), a driving gear (30), a gear cavity (13) and a sliding chute (12), the gear cavity (13) is horizontally arranged in the inner wall of the sliding chute (12) on one side of the spraying table (1), the driving motor (3) is arranged on the bottom surface of the spraying table (1), a motor shaft of the driving motor (3) is rotatably arranged in the gear cavity (13) in a penetrating manner and is horizontally fixed with the driving gear (30), the sliding chute (12) is fixed on the outer side wall of the movable sliding block (21) on one side of the gear cavity (13), the driving gear (30) is meshed with the sliding block rack (22), and the sliding block rack (22) is fixed on the side wall of the movable sliding block (21), the longitudinal length of the moving slide block (21) at the relative position of the driving gear (30) is larger than that of the screw rod slide block (2).

4. The special-shaped cavity spraying device as claimed in claim 1, wherein the lifting device comprises a lifting motor (61), a lifting gear (62) and a lead screw gear (41), the lead screw gear (41) is sleeved and fixed on the wall of a bottom end rod of the lifting lead screw (4), the lifting table (6) is horizontally arranged below the bottom surface of the spraying table (1), the lifting motor (61) is inversely arranged on the top surface of the lifting table (6), a motor shaft of the lifting motor (61) rotatably penetrates through the lifting table (6) and is horizontally fixed below the bottom surface of the lifting table (6), and the lead screw gear (41) is meshed and connected with the lifting gear (62).

5. The special-shaped cavity spraying device as claimed in claim 1, wherein the feeding device comprises a storage box (7) arranged on one side of the bottom of the spraying platform (1), a material pump (70) is arranged on a panel of the storage box (7), a material pumping end of the material pump (70) is communicated with the inner bottom of the storage box (7), and a material discharging end of the material pump (70) is communicated with the spraying holes (51) of the spraying balls (50) through a material spraying pipe (71).

6. The spraying device for the special-shaped cavities according to any one of claims 1 to 5, wherein a clamping sliding cavity (52) used for sliding and clamping the spraying ball (50) is formed in the top of the spraying head (5), a routing cavity (53) used for communicating with the routing channel (40) is formed below the clamping sliding cavity (52), a material cavity is formed in the spraying ball (50), the spraying hole (51) is formed in the top of the material cavity, and the bottom of the material cavity is communicated with the spraying pipe (71) through an elastic connecting pipe (58).

7. The special-shaped cavity spraying device as claimed in any one of claims 1 to 5, wherein the angle rotating mechanism comprises a spherical rack (57) fixed on the side wall of the spraying ball (50), the spherical rack (57) is internally sunk with the side wall of the spraying ball (50), the outer wall of the spherical rack (57) can influence the rotation of the spraying ball (50), the spherical rack (57) is connected with a motor gear (56) in a meshed manner, the motor gear (56) is fixedly connected with a motor shaft of a steering motor (55), the steering motor (55) and the motor gear (56) are both arranged in a motor cavity (54), and the motor cavity (54) is hidden inside the spraying head (5).

8. The special-shaped cavity spraying device according to any one of claims 1 to 5, wherein the bottom surface of the spraying platform (1) is supported by a plurality of supporting columns (10), an annular platform rotating groove (14) is formed in the outer ring of the bottom surface of the spraying platform (1), the supporting columns (10) are circumferentially distributed on the center line of the platform rotating groove (14), and the top ends of the supporting columns (10) are slidably clamped in the platform rotating groove (14) through clamping sliding blocks (15).

9. The special-shaped cavity spraying device as claimed in any one of claims 1 to 5, wherein the bottom surface of the spraying platform (1) is supported by a plurality of supporting columns (10), a controller (8) for controlling the angle rotating mechanism, the lifting device and the feeding device is installed on one side of each supporting column (10), the controller (8) is electrically connected with the power supply ends and the control ends of the angle rotating mechanism, the lifting device and the feeding device respectively through a control power line (80), a distance sensor is arranged at the top end of the spraying ball (50), and the signal output end of the distance sensor is electrically connected with the input end of the controller (8) through the control power line (80).