CN111992349A

CN111992349A - Shower nozzle, application unit and application assembly

Info

Publication number: CN111992349A
Application number: CN202011017035.8A
Authority: CN
Inventors: 李军利; 陈晨
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2020-11-27

Abstract

The invention relates to the field of coating apparatuses, in particular to a spray head, a coating unit and a coating assembly. The spray head comprises a main body, a spray needle and a first electromagnetic valve; the first end of the main body is provided with a spraying channel, a paint spraying channel and an air spraying channel; the other end of the injection channel extends to the second end of the main body and is used for enabling the main body to be communicated; the other end of the paint spraying channel is communicated with the spraying channel, and the other end of the air spraying channel is communicated with the spraying channel; the spray needle is arranged in the spray channel in a sliding mode. The coating unit comprises a shell and the spray head, and the spray head is arranged in the shell; the shell is provided with a nozzle, and the spraying channel is arranged corresponding to the nozzle. The coating assembly comprises an industrial robot, a controller and at least one coating unit; the coating unit is connected to an industrial robot. The invention controls the coating unit with the spray nozzle through the industrial robot, realizes the automatic fine operation of coating and painting, and reduces the workload of manual operation.

Description

Shower nozzle, application unit and application assembly

Technical Field

The invention relates to the field of coating apparatuses, in particular to a spray head, a coating unit and a coating assembly.

Background

At present, multicolor coating of the surface of a vehicle body is finished by adopting an artificial monochromatic 'shielding method' to spray layer by layer for multiple times.

For example, color patterns and numbers are sprayed on the curved surface of the vehicle body, and the number of different colors is 4. The existing manual operation process comprises the following steps:

1. using newspaper or other objects to shield the window glass, front and rear windshield glass, reversing lens and the like;

2. spraying the primer of the vehicle body completely, and waiting for the primer to be completely dried (24 hours under the normal temperature windless environment);

3. carving patterns on a paperboard, attaching the paperboard to the surface of a vehicle body, replacing paints with different colors, and then spraying, wherein if the four colors exist and the patterns are different, the third step is repeated;

4. spraying varnish on the surface for the last time;

5. and (5) completely drying all the paint, tearing off the newspaper, and finishing the work.

In the whole spraying process, manual operation is adopted, and the workload is increased when the control of a spray head is insensitive.

Disclosure of Invention

The invention aims to provide a spray head, a coating unit and a coating assembly, which can make the spray head control more sensitive and reduce the work load of paint spraying through the matching of a spray needle and an electromagnetic valve.

The embodiment of the invention is realized by the following steps:

in a first aspect, the present invention provides a spray head comprising a body, a needle and a first solenoid valve;

the main body is provided with a spraying channel, a paint spraying channel and an air spraying channel;

one end of the injection channel is arranged at the first end of the main body, and the other end of the injection channel extends to the second end of the main body so as to enable the main body to be communicated;

one end of the paint spraying channel is arranged at the first end of the main body, and the other end of the paint spraying channel is communicated with the spraying channel;

one end of the air injection channel is arranged at the first end of the main body, and the other end of the air injection channel is communicated with the injection channel;

the spray needle is arranged in the spray channel in a sliding manner;

the first electromagnetic valve is used for driving the spray needle to slide in the spray channel, and is used for changing the communication state of the spray channel and changing the communication state of the air injection channel and the spray channel.

Preferably, the spray head further comprises a second electromagnetic valve and a third electromagnetic valve;

the second electromagnetic valve is used for controlling the blockage state of the paint spraying channel;

the third electromagnetic valve is used for controlling the blockage opening state of the air injection channel.

In a second aspect, the invention further provides a coating unit, which comprises a shell and the spray head, wherein the spray head is arranged in the shell;

the shell is provided with a nozzle, and the spraying channel and the nozzle are arranged correspondingly.

Preferably, the coating unit further comprises a width adjusting mechanism, and the width adjusting mechanism is arranged on one side of the nozzle and used for adjusting the discharging width of the nozzle.

Preferably, the width adjusting mechanism comprises an adjusting power device, an adjusting transmission device and an adjusting block;

the adjusting power device is arranged on the shell, the adjusting block is arranged at the nozzle in the shell in a sliding manner, and the adjusting block is used for adjusting the width of the nozzle through displacement of the adjusting block;

the adjusting power device is connected with the adjusting block through the adjusting transmission device.

Preferably, the shell is further provided with cleaning air ducts, and the cleaning air ducts are arranged on two opposite sides of the nozzle.

Preferably, a wind direction adjusting roller is arranged at the downstream of the cleaning air duct, and the wind direction adjusting roller is used for adjusting the air outlet direction of the cleaning air duct.

In a third aspect, the present invention also provides a paint assembly comprising an industrial robot, a controller and at least one paint unit as described in any one of the above;

the coating unit is connected to the industrial robot, and the industrial robot is used for driving the coating unit to move in a coating operation;

the controller is used for controlling the opening state of the coating unit.

Preferably, the controller comprises a delay control unit, and the delay control unit is used for controlling the delayed opening or delayed closing of the coating unit.

Preferably, the coating assembly further comprises a drying system, and the drying system is connected with the coating unit;

the drying system is used for drying the formed coating after the coating operation.

The embodiment of the invention has the beneficial effects that:

the first electromagnetic valve is used for controlling the sliding of the nozzle in the spraying channel, so that the control of the paint spraying channel and the air spraying channel is realized, and the accurate control of the paint spraying amount is further realized; the coating unit with the spray nozzle is controlled by the industrial robot, so that automatic fine operation of coating and painting is realized, and the workload of manual operation is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a front view of a showerhead provided in an embodiment of the present invention;

FIG. 2 is a side view of a showerhead provided in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a sectional view A-A of a main body of a showerhead according to an embodiment of the present invention;

fig. 5 is a front view of a coating unit provided in an embodiment of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a cross-sectional view C-C of FIG. 5;

fig. 8 is a schematic perspective view of a coating unit according to an embodiment of the present invention;

fig. 9 is a schematic view of a plurality of coating units provided in an embodiment of the present invention;

fig. 10 is an extension operation schematic diagram of an extension control unit according to an embodiment of the present invention.

Icon: 1-a body; 2-spraying needle; 3-a first solenoid valve; 4-a second solenoid valve; 5-a third electromagnetic valve; 6-a paint spraying channel; 7-a gas injection channel; 8-a jet channel; 9-a housing; 10-a nozzle; 11-wind direction adjusting roller; 12-a rotating electric machine; 13-a power motor; 14-air outlet; 15-cleaning the air duct; 16-lumen; 17-drying channel; 18-a conditioning block; 19-a first coating unit; 20-a second coating unit; 21-third coating unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention are described in detail below with reference to fig. 1-10. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

In a first aspect, the present invention provides a spray head comprising a body 1, a needle 2 and a first solenoid valve 3; the main body 1 is provided with a spraying channel 8, a paint spraying channel 6 and an air spraying channel 7; one end of the injection channel 8 is arranged at the first end of the main body 1, and the other end of the injection channel 8 extends to the second end of the main body 1 to enable the main body 1 to be communicated; one end of the paint spraying channel 6 is arranged at the first end of the main body 1, and the other end of the paint spraying channel 6 is communicated with the spraying channel 8; one end of the air injection channel 7 is arranged at the first end of the main body 1, and the other end of the air injection channel 7 is communicated with the injection channel 8; the spray needle 2 is arranged in the spray channel 8 in a sliding way; the first electromagnetic valve 3 is used for driving the spray needle 2 to slide in the spray channel 8, and changing the communication state of the spray channel 6 and the spray channel 8 and the communication state of the air injection channel 7 and the spray channel 8.

Specifically, in the present embodiment, by providing the injection passage 8 in the main body 1, the needle 2 is provided in the injection passage 8, and the movement of the needle 2 is controlled by the first electromagnetic valve 3.

When the spray needle 2 is inserted into the spray channel 8, the inner ends of the spray channel 6 and the air injection channel 7 are blocked, so that the spray head cannot spray paint, and when the spray needle 2 slides outwards under the control of the first electromagnetic valve 3, so that the inner ends of the spray channel 6 and the air injection channel 7 are communicated with the spray channel 8, the paint in the spray channel 6 can be sprayed outwards under the action of the air in the air injection channel 7.

At this time, in the process of injecting air, the air injection channel 7 forms negative pressure in the injection channel 8, so as to drive the paint in the paint spraying channel 6 to flow to the injection channel 8, and further to be sprayed out under the action of air.

Preferably, the spray head further comprises a second solenoid valve 4 and a third solenoid valve 5; the second electromagnetic valve 4 is used for controlling the blockage state of the paint spraying channel 6; the third electromagnetic valve 5 is used for controlling the open and close state of the air injection channel 7.

In the present embodiment, in order to facilitate the control of the paint channel 6 and the air injection channel 7, a second electromagnetic valve 4 and a third electromagnetic valve 5 may be added to the paint channel 6 and the air injection channel 7 respectively to control the open and closed states thereof.

When spraying paint, use the shower nozzle that this embodiment provided, can be fast accurate open and close the shower nozzle, realize accurate position spraying.

In a second aspect, the invention further provides a coating unit, which comprises a shell 9 and the spray head, wherein the spray head is arranged in the shell 9; the housing 9 is provided with a nozzle 10, and the injection channel 8 is arranged corresponding to the nozzle 10.

Specifically, in the present embodiment, a width adjustment mechanism is further provided on the coating unit, and the width adjustment mechanism is used to adjust the discharge width of the nozzle 10.

Through width adjusting device's setting, can adjust the width of nozzle 10, and then realize the regulation to the width of spraying paint.

Specifically, in the present embodiment, an inner cavity 16 is provided inside the housing 9, the spray head is disposed in the inner cavity 16, and the spray passage 8 is disposed corresponding to the nozzle 10, so that the paint liquid sprayed from the spray passage 8 can be sprayed from the nozzle 10.

More specifically, in the present embodiment, the paint liquid is scattered when being ejected because the gas carries the paint liquid out, and the paint liquid is ejected after being gathered into a certain shape by the arrangement of the nozzle 10, thereby ensuring the position accuracy in coating.

When the width adjusting mechanism is adjusted, the shape of the sprayed paint liquid can be adjusted when the width of the nozzle 10 is adjusted, and the optimal coating effect can be achieved.

Preferably, the width adjusting mechanism comprises an adjusting power device, an adjusting transmission device and an adjusting block 18; the adjusting power device is arranged on the shell 9, the adjusting block 18 is arranged at the nozzle 10 in the shell 9 in a sliding manner, and the width of the nozzle 10 can be adjusted by displacing the adjusting block 18; the adjusting power device is connected with the adjusting block 18 through an adjusting transmission device.

Specifically, in the present embodiment, the adjusting power device is a power motor 13, the adjusting transmission device is a transmission screw, an internal thread is provided on the adjusting block 18, the adjusting block 18 is slidably disposed in the inner cavity 16, and when the adjusting block 18 generates displacement in the inner cavity 16, the width of the nozzle 10 can be changed; the adjusting block 18 is in threaded connection with the transmission screw, and the power motor 13 is connected with the transmission screw.

After the power motor 13 is started, the power motor drives the transmission screw to rotate, under the effect of threaded connection, the adjusting block 18 is driven to make linear displacement along the axis direction of the transmission screw, the position of the adjusting block 18 is further changed, the adjusting of the shielding position of the nozzle 10 is realized, and the width which can be sprayed out of the nozzle 10 is adjusted according to different shielding widths.

Specifically, in the present embodiment, the two width adjustment mechanisms are provided, and are respectively provided on the upper and lower sides of the nozzle 10, so that the nozzle 10 can be adjusted on both sides.

When the two width adjusting mechanisms are synchronously adjusted, the paint spraying center of the nozzle 10 is not changed, and the width is changed; when one of the width adjustment mechanisms is adjusted and the other is not adjusted, the painting center of the nozzle 10 is changed following the width of the nozzle 10.

Due to the arrangement, the width of the nozzle 10 can be adjusted more flexibly, and different adjustments can be performed according to different working conditions, so that the optimal paint spraying and coating effect is achieved.

Preferably, the housing 9 is further provided with cleaning air ducts 15, and the cleaning air ducts 15 are disposed at opposite sides of the nozzle 10.

Specifically, in this embodiment, two cleaning air ducts 15 are provided, and the upstream is connected to the blower, and the downstream is respectively provided at two opposite sides of the nozzle 10, before painting, the blower is used to clean the painting surface by blowing air to ensure the painting effect.

In addition, in the process of paint spraying and coating, an air curtain can be formed through the clean air duct 15, under the action of the air curtain, paint splashing generated in the process of paint spraying is avoided, the position accuracy of paint spraying and coating is protected, the environment is effectively protected, and environmental pollution is avoided.

In the process of paint spraying, a convection air curtain is formed around the paint outlet of the valve body, most of paint mist droplets are sprayed on a vehicle body, and some of the paint mist droplets are absorbed when escaping. Thereby forming a protective layer of air curtain in the working area. The waste gas recovery and the local protection are realized.

Meanwhile, in this embodiment, the cleaning air duct 15 can also play a role of recovering the splashed paint liquid.

Preferably, a wind direction adjusting roller 11 is disposed downstream of the cleaning wind channel 15, and the wind direction adjusting roller 11 is used for adjusting the wind outlet direction of the cleaning wind channel 15.

Specifically, in this embodiment, the wind direction adjusting roller 11 is provided with an air outlet 14, and the air outlet 14 is a rectangular through hole.

More specifically, in this embodiment, there is rotation motor 12 at the end connection of wind direction adjusting roller 11, drives wind direction adjusting roller 11 through rotation motor 12 and rotates, and then realizes the regulation to the air-out direction.

In this embodiment, the two cleaning air ducts 15 are provided with the wind direction adjusting rollers 11, which can respectively adjust the wind direction of the outlet air.

In this embodiment, a synchronizing device may be provided between the two wind direction adjustment rollers 11 so that it can perform synchronous adjustment, achieving a better adjustment effect.

The synchronizing device can be a chain or a gear.

In a third aspect, the present invention also provides a paint assembly comprising an industrial robot, a controller and at least one paint unit according to any one of the preceding; the coating unit is connected to an industrial robot, and the industrial robot is used for driving the coating unit to move in a coating operation; the controller is used for controlling the opening state of the coating unit.

In this embodiment, drive the application unit through industrial robot and remove, control the spraying state of application unit through the controller to realize accurate, automatic coating operation.

Specifically, the controller can control the opening and closing of the coating unit, and control the power motor 13 and the rotating motor 12 of the coating unit, so that the optimal coating operation effect is achieved.

Preferably, the controller comprises a delay control unit, and the delay control unit is used for controlling the delay opening or delay closing of the coating unit.

In this embodiment, a plurality of coating units can be used simultaneously, the colors of the paint materials sprayed in different coating units are different, and when the colors need to be changed, the opening and closing of the coating units are delayed through the delay control unit, so as to achieve seamless connection when the colors are changed.

Specifically, in the traveling direction, as shown in fig. 10, the traveling direction of the coating units is shown by an arrow, when the color in the first coating unit 19 needs to be changed to the color of the second coating unit 20, after the first coating unit 19 closes the spray head, the second coating unit 20 is delayed to be opened under the action of the delay control unit, so that when the second coating unit 20 is opened, the coating position is the position when the first coating unit 19 is closed, so as to achieve the effect of seamless joint.

Similarly, when the color in the second coating unit 20 needs to be changed to the color in the first coating unit 19, the first coating unit 19 is turned on, and the second coating unit 20 is turned off in a delayed manner under the action of the delay control unit, wherein the position when the second coating unit is turned off is the position when the first coating unit 19 is turned on.

The number of the coating units may be two or three according to specific needs, and the coating units are respectively provided as the first coating unit 19, the second coating unit 20 and the third coating unit 21, and the three coating units are respectively fixed in series.

Preferably, the coating assembly further comprises a drying system, and the drying system is connected with the coating unit; the drying system is used for drying the formed coating after the coating operation.

And a drying channel 17 is also arranged in the coating unit and is connected with a drying system, and the coated paint surface is dried by hot air provided by the drying system so as to achieve the effect of direct forming after coating.

The robot carries the coating unit. The controller is started, the coating unit receives data, all parts are opened according to programs, and one-time sequential operations of positioning, color changing, pattern adjustment, curved surface and corner spraying, clean drying waste gas recovery and the like are completed.

The working process is briefly described by taking the coating of the automobile body as an example:

1. the vision system positions the working area, the cleaning air duct 15 and the drying channel 17 of the coating unit are opened, and the industrial robot is matched to quickly clean the area to be sprayed.

2. A starting point is located. The coating unit opens corresponding coating (paint) control electromagnetic valves according to color distribution of a human-computer interface of the industrial robot, meanwhile, the heating and drying system is started to enter a standby state, when a pre-displacement signal of the robot appears, the third electromagnetic valve is opened, high-speed airflow formed by compressed air forms vacuum in the spraying channel, the first electromagnetic valve of the spray needle is controlled to be opened, the coating in the spraying channel is sucked out, and cyclone generated by the airflow enables the coating to be dispersed and then meet air blown out from the auxiliary hole again, so that the coating is fully atomized. The tapered configuration of the nozzle causes the coating to form fine, uniform droplets. Because the nozzle of the valve body is rectangular, the final liquid drops are linearly sprayed on the surface of the vehicle body. And starting the drying and gradual heating system, and enabling the industrial robot to synchronously move at a constant speed to linearly move into a noodle.

The embodiment of the invention has the beneficial effects that:

the first electromagnetic valve 3 controls the sliding of the nozzle 10 in the spraying channel 8, so that the control of the paint spraying channel 6 and the air spraying channel 7 is realized, and the accurate control of the paint spraying amount is further realized; the coating unit with the spray nozzle is controlled by the industrial robot, so that automatic fine operation of coating and painting is realized, and the workload of manual operation is reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spray head is characterized by comprising a main body, a spray needle and a first electromagnetic valve;

the spray needle is arranged in the spray channel in a sliding manner;

2. The spray head of claim 1, further comprising a second solenoid valve and a third solenoid valve;

3. A coating unit comprising a housing and the spray head of claim 1 or 2, the spray head being disposed within the housing;

4. The coating unit of claim 3, further comprising a width adjustment mechanism disposed on one side of the nozzle for adjusting the discharge width of the nozzle.

5. The coating unit of claim 4 wherein the width adjustment mechanism includes an adjustment power device, an adjustment transmission, and an adjustment block;

6. The coating unit of claim 3, wherein the housing is further provided with cleaning air ducts disposed on opposite sides of the nozzle.

7. The coating unit of claim 6, wherein a wind direction adjusting roller is arranged downstream of the cleaning air duct and is used for adjusting the wind outlet direction of the cleaning air duct.

8. A paint assembly comprising an industrial robot, a controller and at least one paint unit as claimed in any one of claims 3 to 7;

the controller is used for controlling the opening state of the coating unit.

9. The paint assembly of claim 8 wherein the controller includes a delay control unit for controlling a delay on or delay off of the paint units.

10. The paint assembly of claim 8 further including a drying system connected to said paint unit;