CN220941472U - Coating drying equipment - Google Patents

Abstract

The application provides coating and drying equipment, and relates to the technical field of coating. The coating and drying equipment is used for coating and drying the inner wall of the cavity of the piece to be coated, which is provided with the cavity, the cavity is provided with an opening, and the coating and drying equipment comprises a bearing device, a coating area and a drying area. The drying area is arranged at the downstream of the coating area, the bearing device is used for bearing the piece to be coated, and the bearing device is configured to: and sequentially passing through the coating area and the drying area so as to sequentially carry out coating and drying procedures on the piece to be coated. The bearing device comprises a fixing component and a rotating component, the fixing component is used for fixing a piece to be coated, the rotating component is connected with the fixing component, and the rotating component is used for driving the fixing component to rotate so as to drive the piece to be coated, which is fixed by the fixing component, to rotate around the axis direction of the opening. When the coating and drying equipment provided by the application is used for coating the inner wall of the cavity of the piece to be coated, which is provided with the cavity, the binding force between the coating and the inner wall of the cavity and the thickness uniformity of the coating can be improved.

Description

Coating drying equipment

Technical Field

The application relates to the technical field of coating, in particular to a coating and drying device.

Background

It is a common production process to coat the inner walls of the cavities of the pieces to be coated (e.g. pipes etc.), such as to coat the inner walls of the pipes with a corrosion protection paint for corrosion protection, or to coat the inner peripheral walls and bottom walls of the trough structure pieces with a water-proof coating, etc.

In the prior art, the inner wall of a cavity of a piece to be coated, which is provided with a cavity, is coated in a spraying manner, and then the piece to be coated is vertically hung so that the paint on the inner wall of the cavity is automatically distributed under the action of gravity. However, the above-mentioned method not only results in poor bonding force between the coating and the inner wall of the cavity, but also results in poor uniformity of thickness of the coating on the inner wall of the cavity.

Disclosure of utility model

The application aims to provide a coating and drying device which aims to simultaneously improve the binding force between a coating and the inner wall of a cavity and the thickness uniformity of the coating when the inner wall of the cavity of a piece to be coated with the cavity is coated.

The application provides a coating and drying device, which is used for coating and drying the inner wall of a cavity of a piece to be coated, wherein the cavity is provided with an opening, and the coating and drying device comprises: a carrying device, a coating area and a drying area. The drying area is arranged at the downstream of the coating area, the bearing device is used for bearing the piece to be coated, and the bearing device is configured to: and sequentially passing through the coating area and the drying area so as to sequentially carry out coating and drying procedures on the piece to be coated. The bearing device comprises a fixing component and a rotating component, the fixing component is used for fixing a piece to be coated, the rotating component is connected with the fixing component, and the rotating component is used for driving the fixing component to rotate, so that the piece to be coated, which is fixed by the fixing component, is driven to rotate around the axis direction of the opening.

In the equipment, the bearing device is used for bearing the piece to be coated, and the bearing device is configured to sequentially pass through the coating area and the drying area, so that the procedures of coating and drying the inner wall of the cavity can form a continuous production process; in addition, the rotating assembly arranged on the bearing device can drive the piece to be coated to rotate around the axis direction of the opening of the bearing device, so that the piece to be coated is in a state of rotating around the axis direction of the opening of the bearing device in the coating and drying processes, the coating coated on the inner wall of the cavity of the piece to be coated is subjected to the action of centrifugal force in the rotating process of the piece to be coated, the binding force between the coating and the inner wall of the cavity of the piece to be coated can be improved, and the thickness uniformity of the coating in the rotating direction of the piece to be coated is improved; in the rotation process of the to-be-coated piece, the phenomenon of obvious downward flow of the coating due to the action of gravity can be effectively restrained, and the thickness uniformity of the coating in the height direction of the to-be-coated piece can be improved.

In an alternative embodiment of the application, the piece to be coated is a pipe fitting, and the coating and drying equipment further comprises a negative pressure air draft assembly; the negative pressure suction assembly is configured to: negative pressure air suction is carried out on the pipe orifice at one end of the pipe fitting reaching the drying area. The negative pressure air draft assembly is arranged in the drying area; or, the negative pressure air draft assembly is arranged on the bearing device.

Among the above-mentioned technical scheme, wait to coat the piece and reach the stoving region and get into stoving process, the temperature in stoving region can make the coating viscosity of pipe fitting inner wall grow gradually, and the mobility of coating reduces gradually, carries out negative pressure convulsions through setting up negative pressure convulsions subassembly to the one end mouth of pipe department of pipe fitting, is favorable to realizing effectively avoiding under the too big circumstances of coating mobility, takes away unnecessary coating on the pipe fitting inner wall through the negative pressure, and then is favorable to realizing that the pipe fitting inner wall forms the thinner coating as far as under the circumstances of effectively guaranteeing the thickness homogeneity of coating along the convulsions direction. In addition, when negative pressure exhaust component is used for carrying out negative pressure air exhaust to the pipe fitting, local 'turbulent flow of wind' phenomenon can appear in the pipe fitting inside, because rotate the axis direction rotation of component drive pipe fitting around the pipe fitting at negative pressure exhaust in-process, be favorable to avoiding because 'the inside turbulent flow of wind' phenomenon that appears of pipe fitting, and the condition that leads to causing the influence to the surface appearance of the coating of pipe fitting inner wall is favorable to guaranteeing the surface quality of coating under the condition of effectively reducing the thickness of the coating of pipe fitting inner wall.

In an alternative embodiment of the application, the carrying device further comprises a bracket, which is rotatably connected with the fixing component and/or the rotating component; the negative pressure air draft assembly is fixedly connected with the support, and an air draft opening of the negative pressure air draft assembly is used for communicating with a lumen of the pipe fitting.

Among the above-mentioned technical scheme, through setting up the support to set up negative pressure convulsions subassembly and support fixed connection, and set up the support and rotate with fixed subassembly and/or rotating the subassembly and be connected, realize that fixed subassembly, rotating subassembly and negative pressure convulsions subassembly are connected as a whole, be convenient for improve the convenience of negative pressure convulsions operation.

In an alternative embodiment of the application, the pipe fitting is a straight pipe, and the fixing component is used for fixing the pipe fitting and enabling the pipe fitting to be vertically arranged; the negative pressure air draft assembly is positioned below the fixed assembly and the rotating assembly.

In the technical scheme, the negative pressure air suction component is positioned below the fixed component and the rotating component, namely the negative pressure air suction component performs negative pressure air suction on the lower port of the pipe fitting, hot air in the drying area enters the pipe fitting through the upper port of the pipe fitting and then flows out of the lower port of the pipe fitting, so that the air flow at the position, close to the upper port, of the inner wall of the pipe fitting is higher in temperature, concentrated and higher in air flow velocity, and the air flow at the position, close to the lower port, of the inner wall of the pipe fitting is lower in temperature, more turbulent and slower in air flow velocity; under the condition, the fluidity of the coating on the inner wall of the pipe fitting close to the upper port area can be reduced rapidly, and the situation that the thickness of the upper area of the inner wall of the straight pipe is obviously reduced and the thickness uniformity of the coating on the inner wall of the straight pipe is poor in the height direction due to the fact that the coating on the inner wall of the straight pipe close to the upper port area flows obviously under the action of gravity can be avoided; the paint on the inner wall of the pipe fitting near the lower port area can have certain fluidity, so that the superfluous paint on the inner wall of the pipe fitting can flow out from the lower port of the pipe fitting under the dual actions of negative pressure air suction and gravity.

In an alternative embodiment of the application, the rotating assembly is arranged below the fixed assembly, the rotating assembly is provided with a vent hole penetrating through the rotating assembly along the vertical direction, and the suction opening of the negative pressure suction assembly is used for communicating with the lumen of the pipe fitting through the vent hole.

Among the above-mentioned technical scheme, through set up the air vent that runs through the rotation subassembly along vertical direction on rotating the subassembly, through the air vent intercommunication negative pressure extraction component's exhaust port and the lumen of pipe fitting, and then realize carrying out negative pressure convulsions operation to the lower port department of pipe fitting through the negative pressure extraction component.

In an alternative embodiment of the present application, the coating and drying apparatus further comprises a coating material collection cartridge; the coating material collecting box is arranged below the rotating assembly, and the coating material collecting box is arranged between the rotating assembly and the negative pressure air draft assembly. The negative pressure exhaust assembly comprises a gas pipeline and an exhaust fan positioned on the gas pipeline; the paint collection cartridge communicates with the vent and the gas conduit communicates with the upper end of the top wall or side wall of the paint collection cartridge.

According to the technical scheme, the paint collecting box is arranged between the rotating assembly and the negative pressure exhaust assembly and is communicated with the vent hole, so that the excessive paint extracted from the lower port of the pipe fitting enters the paint collecting box; through setting up the gas pipeline of negative pressure convulsions subassembly and the upper end intercommunication of roof or lateral wall of coating collection box, be favorable to avoiding entering the coating of coating collection box and get into the gas pipeline of negative pressure convulsions subassembly and block up the gas pipeline.

In an alternative embodiment of the application, the fixing component is a clamping piece; and/or the rotating assembly comprises a driving piece and a connecting piece which are connected with each other, the connecting piece is connected with the fixing assembly, the driving piece is used for driving the connecting piece to rotate so as to drive the fixing assembly to rotate, and the driving piece is a rotating motor.

In the technical scheme, the fixing component is a clamping piece, so that the bearing device can stably bear and fix the piece to be coated; the rotating assembly comprises a driving piece and a connecting piece which are connected with each other, and the rotating assembly can drive the fixing assembly to rotate, so that the to-be-coated piece fixed by the fixing assembly is driven to rotate.

In an alternative embodiment of the application, the carrying device further comprises a bracket and a telescopic member; the bracket is rotationally connected with the fixed component or the rotating component through the telescopic piece.

In the above technical scheme, through setting up the extensible member, but the distance between adjustable support and the fixed subassembly (or the rotating assembly), and then can realize adjusting the distance between waiting to coat piece and the support to make wait to coat the piece and can align with the nozzle of coating region, in order to carry out accurate spraying.

In an alternative embodiment of the application, the bearing device further comprises a bracket, one end of the bracket is rotationally connected with the fixing component and/or the rotating component, the other end of the bracket is provided with a limiting piece, and the limiting piece is used for limiting the to-be-coated piece to deviate in the rotating process.

According to the technical scheme, the limiting piece is arranged to limit the to-be-coated piece to deviate in the rotation process, so that the stability of the to-be-coated piece in the rotation process can be improved.

In an alternative embodiment of the application, the coating and drying device is further provided with an annular guide rail, a feeding area and a discharging area; the feeding area, the coating area, the drying area and the discharging area are sequentially arranged along the annular guide rail; and the bearing device is in sliding connection with the annular guide rail.

Among the above-mentioned technical scheme, through setting up annular guide rail and along annular guide rail material loading region, coating region, stoving region and unloading region that set gradually, and bear device and annular guide rail sliding connection, realize bearing device and pass through material loading region, coating region, stoving region and unloading region on annular guide rail in proper order for material loading, coating, stoving and unloading process are serialization production process, are favorable to improving production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a coating and drying apparatus according to an embodiment of the present application.

Fig. 2 is a front view of a coating and drying apparatus according to an embodiment of the present application.

Fig. 3 is a right side view of a coating and drying apparatus according to an embodiment of the present application.

Fig. 4 is a schematic structural view of a carrying device, a negative pressure suction assembly and a paint collecting box according to an embodiment of the present application.

Fig. 5 is an enlarged view at a in fig. 4.

Icon: 10-a piece to be coated; 11-opening; 20-an annular guide rail; 30-a feeding area; 40-coating area; 50-a drying area; 51-a drying chamber; 60-blanking area; 70-carrying device; 71-a fixed assembly; 72-rotating the assembly; 721-driving member; 722-a connector; 73-a bracket; 74-limiting piece; 80-negative pressure air draft assembly; 81-gas piping; 82-exhaust fan; 90-paint collection cartridge.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and in the description of the drawings above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "upper", "lower", "inner", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "connected," "fixed" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Fig. 1 is a schematic structural view of a coating and drying apparatus according to an embodiment of the present application, fig. 2 is a front view of the coating and drying apparatus according to an embodiment of the present application, fig. 3 is a right side view of the coating and drying apparatus according to an embodiment of the present application, and referring to fig. 1 to 3, the embodiment of the present application provides a coating and drying apparatus suitable for coating and drying a cavity inner wall of a member to be coated 10 having a cavity to form a coating layer on the inner wall of the member to be coated 10.

In the present application, the member to be coated 10 having the cavity needs to have the opening 11 communicating with the cavity itself, so that the coating can be applied from the opening 11 to the inner wall of the cavity of the member to be coated 10.

As an example, the application is not limited to the piece 10 to be coated; the member to be coated 10 may also be a pipe (for example, a straight pipe, an elbow pipe, a horseshoe pipe, or a U-shaped pipe), and if the member to be coated 10 is a pipe, the opening 11 of the member to be coated 10 is the pipe orifice of the pipe; alternatively, the member to be coated 10 may be a member having a groove structure (the groove structure having an inner peripheral wall and a bottom wall), and if the member to be coated 10 is a member having a groove structure, the opening 11 of the member to be coated 10 is a notch of the member having a groove structure.

Referring to fig. 1 to 3, the coating and drying apparatus includes an endless guide rail 20, a loading area 30, a coating area 40, a drying area 50, a discharging area 60, and a carrying device 70; the feeding area 30, the coating area 40, the drying area 50 and the blanking area 60 are sequentially arranged along the annular guide rail 20, and the bearing device 70 is in sliding connection with the annular guide rail 20; the loading device 70 is used for loading the to-be-coated piece 10, the loading area 30 is used for loading the to-be-coated piece 10 onto the loading device 70, the coating area 40 is used for coating paint on the inner wall of the cavity of the to-be-coated piece 10 from the opening 11 of the to-be-coated piece 10, the drying area 50 is used for drying the paint on the inner wall of the cavity of the to-be-coated piece 10, and the unloading area 60 is used for unloading the to-be-coated piece 10 from the loading device 70.

The carrier 70 is configured to: sequentially passing through the feeding area 30, the coating area 40, the drying area 50, the discharging area 60 and the feeding area 30; the loading device 70 can sequentially pass through the loading area 30, the coating area 40, the drying area 50 and the unloading area 60 on the annular guide rail 20 and then returns to the loading area 30, so that the loading, coating, drying and unloading processes are continuous production processes, and the production efficiency is improved.

In the embodiment of the present application, the drying area 50 is provided with a drying chamber 51, and the carrying device 70 may slide along the circular guide rail 20 and enter into the drying chamber 51 to perform a drying process. A heating element (not shown) is provided on an inner wall of the drying chamber 51; the heating element is arranged, so that the drying process can be realized in a thermal radiation mode, the temperature of the whole drying chamber 51 is more uniform, and the drying effect on the paint is improved.

In the embodiment of the present application, the coating and drying device is a full-automatic coating and drying device, the feeding area 30 is provided with an automatic feeding system (not shown in the figure), the coating area 40 is provided with an automatic identification spraying system (not shown in the figure), and the discharging area 60 is provided with an automatic discharging system (not shown in the figure); the coating and drying device is a full-automatic coating and drying device by matching an automatic electric control system (not shown in the figure) for sending out control signals, a wireless transmission system (not shown in the figure) for transmitting the control signals and a control module (not shown in the figure) for receiving the control signals and implementing control operations.

It should be noted that, the above-mentioned "automatic feeding system", "automatic identification spraying system" and "automatic discharging system" all adopt systems known in the prior art, and the present application is not limited.

Further, in some possible embodiments, the plurality of carrying devices 70 are disposed on the annular rail 20, so that different carrying devices 70 located on the annular rail 20 can carry different pieces 10 to be coated respectively, so as to perform sequential coating and drying processes on different pieces 10 to be coated respectively, which is beneficial to improving production efficiency and performing coating and drying processes with different control parameters on different pieces 10 to be coated respectively.

The number of the carrying devices 70 provided on the circular rail 20 is not limited, and the number of the carrying devices 70 provided on the circular rail 20 can be flexibly increased or decreased as needed.

Furthermore, in other possible embodiments, the coating and drying apparatus may also have only a carrying device 70, a coating region 40 and a drying region 50, the drying region 50 being arranged downstream of the coating region 40, and the carrying device 70 for carrying the items 10 to be coated being configured to: the workpiece 10 to be coated is sequentially subjected to the coating and drying processes through the coating area 40 and the drying area 50, so long as the process of coating and drying the inner wall of the cavity of the workpiece 10 to be coated is satisfied to form a continuous production process.

Referring to fig. 4, a carrying device 70, a negative pressure suction assembly 80 and a paint collecting box 90 provided in an embodiment of the present application, the carrying device 70 includes a fixing assembly 71 and a rotating assembly 72, the fixing assembly is used for fixing a to-be-coated member 10, the rotating assembly 72 is connected with the fixing assembly 71, and the rotating assembly 72 is used for driving the fixing assembly 71 to rotate, so as to drive the to-be-coated member 10 fixed by the fixing assembly 71 to rotate around an axis direction of an opening 11 thereof.

The above arrangement manner can make the member to be coated 10 in a state of rotating around the axis direction of the opening 11 thereof in the coating and drying processes, and the coating coated on the inner wall of the cavity of the member to be coated 10 is subjected to centrifugal force in the rotating process of the member to be coated 10, so that the binding force between the coating and the inner wall of the cavity of the member to be coated 10 can be improved, and the thickness uniformity of the coating in the rotating direction of the member to be coated 10 can be improved; in the rotation process of the member to be coated 10, the phenomenon of "the coating material significantly flowing down due to the action of gravity" can be effectively suppressed, and the thickness uniformity of the coating layer in the height direction of the member to be coated 10 can be improved.

In the case where the piece 10 to be coated is a pipe (for example, a straight pipe, a bent pipe, a horseshoe pipe, a U-shaped pipe, or the like), in order to form a coating layer as thin as possible on the inner wall of the pipe; in an embodiment of the present application, the coating and drying apparatus further includes a negative pressure suction assembly 80; the negative pressure suction assembly 80 is configured to: negative pressure suction is applied to the pipe orifice at one end of the pipe reaching the drying zone 50. The negative pressure suction assembly 80 may be disposed within the drying area 50, or the negative pressure suction assembly 80 may be disposed on the carrying device 70.

Above-mentioned setting means, pipe fitting (wait to coat piece 10 promptly) reach stoving region 50 and get into stoving process, the temperature in stoving region 50 can make the coating viscosity of pipe fitting inner wall grow gradually, the mobility of coating reduces gradually, carry out negative pressure convulsions to the one end mouth of pipe department of pipe fitting through setting up negative pressure convulsions subassembly 80, be favorable to realizing effectively avoiding under the too big circumstances of coating mobility, take away unnecessary coating on the pipe fitting inner wall through the negative pressure, and then be favorable to realizing that the pipe fitting inner wall forms the thinner coating as far as possible under the circumstances of effectively guaranteeing the thickness homogeneity of coating along the convulsions direction. In addition, when the negative pressure air suction assembly 80 is used for carrying out negative pressure air suction on the pipe fitting, local turbulence phenomenon of wind can occur in the pipe fitting, and the rotating assembly 72 drives the pipe fitting to rotate around the axis direction of the pipe fitting opening 11 in the negative pressure air suction process, so that the condition that the surface appearance of the coating on the inner wall of the pipe fitting is influenced due to the phenomenon of turbulence of wind occurring in the pipe fitting is avoided, and the surface quality of the coating is guaranteed under the condition that the thickness of the coating on the inner wall of the pipe fitting is effectively reduced.

Further, as shown in fig. 4, the carrying device 70 further includes a bracket 73, and the bracket 73 is rotatably connected with the rotating assembly 72; the negative pressure suction assembly 80 is fixedly connected with the bracket 73, and a suction port of the negative pressure suction assembly 80 is used for communicating with a lumen of a pipe fitting (i.e., the member to be coated 10).

The above-mentioned setting mode is through setting up support 73 to set up negative pressure convulsions subassembly 80 and support 73 fixed connection, and set up support 73 and rotate subassembly 72 rotation and be connected, realize that fixed subassembly 71, rotate subassembly 72 and negative pressure convulsions subassembly 80 connect as a whole, be convenient for improve the convenience of negative pressure convulsions operation.

In the example shown in fig. 4, the tube (i.e. the piece to be coated 10) is a straight tube; it should be noted that, in other possible embodiments, for the coating and drying apparatus provided with the negative pressure air suction assembly 80, the pipe fitting is not limited to a straight pipe, for example, the pipe fitting may also be a bent pipe, a horseshoe pipe, a U-shaped pipe, or the like, so long as it is satisfied that the fixing assembly 71 can fix the pipe fitting, the rotating assembly 72 can drive the pipe fitting to rotate around the axial direction of the opening 11 thereof, and the negative pressure air suction assembly 80 can also perform negative pressure air suction on the pipe opening at one end of the pipe fitting.

It should be noted that, in other possible embodiments, the bracket 73 may be rotationally connected to the fixing component 71, or the bracket 73 may be rotationally connected to both the fixing component 71 and the rotating component 72, so long as the requirement "the rotating component 72 can drive the fixing component 71 to rotate and further drive the part to be coated 10 fixed by the fixing component 71 to rotate around the axis direction of the opening 11 thereof" is satisfied.

Furthermore, in the case where the pipe member (i.e., the member to be coated 10) is a straight pipe; as shown in fig. 4, the fixing assembly 71 is used for fixing the pipe fitting and vertically arranging the pipe fitting; the negative pressure suction assembly 80 is located below the stationary assembly 71 and the rotating assembly 72.

In the above arrangement, the negative pressure air suction assembly 80 is located below the fixed assembly 71 and the rotating assembly 72, so that the negative pressure air suction assembly 80 performs negative pressure air suction on the lower port of the straight pipe, hot air in the drying area 50 enters the inside of the straight pipe through the upper port of the straight pipe and then flows out of the lower port of the straight pipe, so that the air flow at the position, close to the upper port, of the inner wall of the straight pipe has higher temperature, concentrated air flow and higher flow velocity, and the air flow at the position, close to the lower port, of the inner wall of the straight pipe has lower temperature, more turbulent air flow and lower flow velocity; under the condition, the fluidity of the paint on the inner wall of the straight pipe close to the upper port area can be reduced rapidly, and the situation that the thickness of the upper area of the inner wall of the straight pipe is obviously reduced and the thickness uniformity of the paint on the inner wall of the straight pipe in the height direction is poor due to the fact that the paint on the inner wall of the straight pipe close to the upper port area flows obviously under the action of gravity can be avoided; in addition, under the condition, the paint on the inner wall of the straight pipe close to the lower port area has certain fluidity, so that the redundant paint on the inner wall of the straight pipe can flow out from the lower port of the straight pipe effectively under the dual actions of negative pressure air suction and gravity.

Further, in the case where the pipe member (i.e., the member to be coated 10) is a straight pipe, in the embodiment of the present application, the rotation member 72 is disposed below the fixing member 71, the negative pressure suction member 80 is disposed below the rotation member 72, and the rotation member 72 is provided with a ventilation hole (not shown) penetrating the rotation member 72 in the vertical direction, and a suction port of the negative pressure suction member 80 is used for communicating with a lumen of the pipe member through the ventilation hole.

In the above arrangement, the vent hole penetrating the rotating assembly 72 along the vertical direction is formed in the rotating assembly 72, and the vent hole is communicated with the suction port of the negative pressure suction assembly 80 and the lumen of the pipe fitting, so that the negative pressure suction operation is performed on the lower port of the pipe fitting through the negative pressure suction assembly 80.

It should be noted that, in other possible embodiments, for the case that the pipe fitting is a straight pipe, the fixing assembly 71 may be located below the rotating assembly 72, and the fixing assembly 71 may be located above the negative pressure air suction assembly 80; as long as the requirement that the fixing component 71 can enable the straight pipe to be arranged and fixed in the vertical direction is met, the rotating component 72 can also drive the straight pipe to rotate around the axial direction of the opening 11 (namely the pipe axis direction of the straight pipe), and the negative pressure air draft component 80 can perform negative pressure air draft on the pipe orifice of the lower end of the straight pipe.

In the embodiment of the present application, the fixing component 71 is a clamping component, so that the carrying device 70 can stably carry and fix the to-be-coated piece 10. It should be noted that, in other possible embodiments, the fixing component 71 may be a rubber sleeve with a certain elasticity, and the rubber sleeve is used for being sleeved outside the to-be-coated member 10 to fix the to-be-coated member 10, so long as the requirement that the fixing component 71 can fix the to-be-coated member 10 is satisfied.

In the embodiment of the present application, the rotating assembly 72 includes a driving member 721 and a connecting member 722 connected to each other, and the connecting member 722 is connected to the fixing assembly 71, wherein the driving member 721 is used for driving the connecting member 722 to rotate so as to drive the fixing assembly 71 to rotate, and further drive the to-be-coated member 10 fixed by the fixing assembly 71 to rotate. Illustratively, the driving member is a rotary motor and the connecting member is a connecting rod; it should be noted that, in other possible embodiments, the rotating assembly 72 may have other structures, so long as it is able to satisfy "the rotating assembly 72 can drive the fixed assembly 71 to rotate".

In an embodiment of the present application, the carrying device 70 further comprises a telescopic member (not shown in the drawings), by which the bracket 73 is rotatably connected to the fixing assembly 71. In the above arrangement, the distance between the bracket 73 and the fixing component 71 can be adjusted, so that the distance between the to-be-coated member 10 and the bracket 73 can be adjusted, so that the to-be-coated member 10 can be aligned with the nozzle of the spraying device of the coating area 40 for precise spraying.

It should be noted that, in other possible embodiments, the bracket 73 is also rotatably connected to the rotating assembly 72 through a telescopic member, so as to realize the adjustable distance between the bracket 73 and the fixed assembly 71; in other possible embodiments, no telescoping members may be provided.

In addition, as shown in fig. 4, in the embodiment of the present application, one end of a bracket 73 is rotatably connected to the rotating assembly 72, and a stopper 74 is provided on the other end of the bracket, and the stopper 74 is used to restrict the deviation of the member to be coated 10 during rotation. The above arrangement can improve the stability of the member to be coated 10 during rotation.

Illustratively, the limiting member 74 may be a limiting ring, which is sleeved on the outer circumference of the member to be coated 10 to limit the member to be coated 10 from being deviated during rotation; it should be noted that the present application is not limited to the structure of the limiting member, as long as the "limiting member 74 can be used to limit the deviation of the member to be coated 10 during rotation" can be satisfied.

Fig. 5 is an enlarged view of fig. 4 a, referring to fig. 4 and 5, the coating and drying apparatus further includes a coating material collecting cartridge 90; the paint collection cartridge 90 is disposed below the rotating assembly 72, the rotating assembly 72 is disposed below the stationary assembly 71, and the paint collection cartridge 90 is disposed between the rotating assembly 72 and the negative pressure suction assembly 80. The negative pressure suction assembly 80 includes a gas conduit 81 and a suction fan 82 located on the gas conduit 81; the paint collection cartridge 90 communicates with the vent hole, and the gas duct 81 communicates with the upper end portion of the top wall or side wall of the paint collection cartridge 90.

The above arrangement allows the excess paint drawn out through the lower port of the pipe (i.e., the member to be coated 10) to enter the paint collection box 90; by providing the air duct 81 of the negative pressure suction assembly 80 in communication with the upper end of the top wall or side wall of the paint collection cartridge 90, it is advantageous to prevent paint entering the paint collection cartridge 90 from entering the air duct 81 of the negative pressure suction assembly 80 and clogging the air duct 81.

Further, in the embodiment of the present application, the negative pressure exhaust assembly 80 further includes an exhaust gas collecting device (not shown in the figure), which is disposed downstream of the exhaust fan 82, so as to collect the exhaust gas entering the exhaust fan 82, which is beneficial to environmental protection.

The application is not limited to the structure of the tail gas collecting device, and the tail gas collecting device is a conventional device with a tail gas collecting function in the prior art.

In summary, the coating and drying device provided by the application can simultaneously improve the bonding force between the coating and the inner wall of the cavity and the thickness uniformity of the coating when coating the inner wall of the cavity of the to-be-coated piece 10 with the cavity.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A coating and drying apparatus for coating and drying an inner wall of a cavity of a member to be coated having a cavity, the cavity having an opening, the coating and drying apparatus comprising: the device comprises a bearing device, a coating area and a drying area;

The drying area is arranged at the downstream of the coating area, the bearing device is used for bearing the piece to be coated, and the bearing device is configured to: sequentially passing through the coating area and the drying area so as to sequentially coat and dry the to-be-coated piece;

The bearing device comprises a fixing assembly and a rotating assembly, wherein the fixing assembly is used for fixing a piece to be coated, the rotating assembly is connected with the fixing assembly, and the rotating assembly is used for driving the fixing assembly to rotate so as to drive the fixing assembly to fix the piece to be coated to rotate around the axis direction of the opening.

2. The coating and drying apparatus of claim 1, wherein the article to be coated is a pipe, the coating and drying apparatus further comprising a negative pressure suction assembly; the negative pressure suction assembly is configured to: negative pressure air suction is carried out on a pipe orifice at one end of the pipe fitting reaching the drying area;

The negative pressure exhaust component is arranged in the drying area; or, the negative pressure exhaust component is arranged on the bearing device.

3. The coating and drying apparatus according to claim 2, wherein the carrying means further comprises a bracket rotatably connected to the stationary assembly and/or the rotating assembly; the negative pressure exhaust component is fixedly connected with the support, and an exhaust port of the negative pressure exhaust component is used for communicating with a lumen of the pipe fitting.

4. The coating and drying apparatus according to claim 3, wherein the pipe is a straight pipe, and the fixing assembly is used for fixing the pipe and vertically arranging the pipe; the negative pressure air draft assembly is located below the fixed assembly and the rotating assembly.

5. The coating and drying apparatus according to claim 4, wherein the rotating assembly is provided below the fixed assembly, the rotating assembly is provided with a vent hole penetrating through the rotating assembly in a vertical direction, and the suction opening of the negative pressure suction assembly is used for communicating with a lumen of the pipe member through the vent hole.

6. The coating and drying apparatus of claim 5, further comprising a coating collection cartridge; the paint collecting box is arranged below the rotating assembly, and is arranged between the rotating assembly and the negative pressure air suction assembly;

The negative pressure exhaust assembly comprises a gas pipeline and an exhaust fan positioned on the gas pipeline; the paint collection cartridge communicates with the vent and the gas conduit communicates with an upper end of a top wall or side wall of the paint collection cartridge.

7. The coating and drying apparatus of claim 1, wherein the stationary component is a clamp;

And/or, the rotating assembly comprises a driving piece and a connecting piece which are connected with each other, the connecting piece is connected with the fixing assembly, the driving piece is used for driving the connecting piece to rotate so as to drive the fixing assembly to rotate, and the driving piece is a rotating motor.

8. The coating and drying apparatus of claim 1, wherein the carrier means further comprises a bracket and a telescoping member;

The support is in rotary connection with the fixed assembly or the rotary assembly through the telescopic piece.

9. The coating and drying apparatus according to claim 1, wherein the carrying device further comprises a bracket, one end of the bracket is rotatably connected with the fixing assembly and/or the rotating assembly, a limiting member is disposed at the other end of the bracket, and the limiting member is used for limiting the to-be-coated member to deviate in the rotating process.

10. The coating and drying apparatus according to any one of claims 1 to 9, further provided with an annular guide rail, a loading area and a unloading area; the feeding area, the coating area, the drying area and the discharging area are sequentially arranged along the annular guide rail; and the bearing device is in sliding connection with the annular guide rail.