CN116899776A

CN116899776A - Spraying device and method for operating the same

Info

Publication number: CN116899776A
Application number: CN202311007228.9A
Authority: CN
Inventors: 曾庆恒
Original assignee: Guangzhou Huachuang Precision Technology Co ltd
Current assignee: Guangzhou Huachuang Precision Technology Co ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2023-10-20

Abstract

The invention relates to a spraying device and a working method thereof, comprising a spray head device and a liquid supply device; the spray head device comprises a supporting piece and a row of nozzles arranged on the supporting piece, wherein the row of nozzles are arranged along a first direction, and the row of nozzles are connected with the liquid supply device; the liquid supply device comprises a first liquid supply mechanism and a second liquid supply mechanism; the first liquid supply mechanism is used for providing first liquid spraying to the nozzle; the second liquid supply mechanism is used for providing second liquid spraying to the nozzle. The spray nozzle device is provided with a row of spray nozzles, so that a spray mode taking a line as a unit and forming a surface by the line is formed, the spray nozzle device can continuously spray workpieces, the working efficiency is improved, the spray nozzles on the spray nozzle device are arranged in a straight line, the structure of the spray nozzle device is more compact, the required installation space is small, the spray nozzle device is convenient to directly fix on a production line of the workpieces, the existing production line is not required to be modified or other supporting structures are additionally arranged, and the application range of spray equipment is enlarged.

Description

Spraying device and method for operating the same

Technical Field

The invention belongs to the technical field of injection devices, and particularly relates to injection equipment and a working method thereof.

Background

Currently, the injection process is a common process in the field of production and processing. Accordingly, the spray apparatus is widely applied to various fields. The existing spraying equipment mostly comprises a moving mechanism and a nozzle, and the nozzle is driven to move by the moving mechanism to spray a workpiece. However, the mode can only realize the injection of forming lines by points and forming surfaces by lines, the injection efficiency is low, the single-process time is long, and the mass production and the online non-stop production cannot be satisfied.

Disclosure of Invention

The invention provides an injection device and a working method thereof, which are used for improving injection efficiency.

The embodiment of the invention provides a spraying device, which comprises a spray head device and a liquid supply device;

the spray head device comprises a supporting piece and a row of spray nozzles arranged on the supporting piece, wherein the spray nozzles are arranged along a first direction, and the spray nozzles are connected with the liquid supply device;

the liquid supply device comprises a first liquid supply mechanism and a second liquid supply mechanism; the first liquid supply mechanism is connected with a row of the nozzles and is used for supplying first liquid spray to the nozzles; the second liquid supply mechanism is connected with a row of the nozzles and is used for supplying second liquid spray to the nozzles.

Optionally, the liquid supply device further comprises a second liquid supply mechanism; the second liquid supply mechanism is connected with a row of the nozzles and is used for supplying second liquid spray to the nozzles.

Optionally, the spray head device further comprises a spray head pipeline, and the spray head pipeline is respectively connected with the first liquid supply mechanism and the second liquid supply mechanism;

each nozzle comprises a nozzle body, a nozzle pipeline and a nozzle electronic valve; one end of the nozzle pipeline is connected with the nozzle pipeline, and the other end of the nozzle pipeline is connected with the nozzle main body; the nozzle electronic valve is arranged on the nozzle pipeline and used for controlling the flow rate of the nozzle pipeline.

Optionally, the spray head device is provided with a plurality of spray nozzles, and all spray nozzles in the plurality of spray head devices are arranged on the same straight line.

Optionally, the spray head device is provided with a plurality of spray heads, projections of the spray head device along the second direction at least partially overlap, all the spray nozzles on the spray head device are staggered, and the first direction is perpendicular to the second direction.

Optionally, the spray head device is provided with a plurality of spray heads, the projections of the spray head device along the first direction are not overlapped, the projections of the spray head device along the second direction are not overlapped, and the first direction is perpendicular to the second direction.

Optionally, the first liquid supply mechanism comprises a first liquid storage tank, a fluid pressurization stabilizing system, a first electromagnetic valve and a first connecting pipeline;

the first liquid storage tank, the fluid pressurization stabilizing system, the first electromagnetic valve and the spray nozzle pipeline are sequentially connected through the first connecting pipeline;

the fluid pressurizing and stabilizing system is used for conveying the first liquid spray in the first liquid storage tank to the nozzle and adjusting the pressure for conveying the first liquid spray.

Optionally, the fluid boost stabilization system includes a first fluid pump, a first filter, and a pressure sensor; the first fluid pump is connected between the first liquid storage tank and the first electromagnetic valve, and the pressure sensor is connected between the first fluid pump and the first electromagnetic valve; the first filter is connected between the first liquid storage tank and the first electromagnetic valve.

Optionally, the first liquid supply mechanism further comprises a second electromagnetic valve and a second connecting pipeline, and the first liquid storage tank, the second electromagnetic valve and the spray nozzle pipeline are sequentially connected through the second connecting pipeline.

Optionally, the second liquid supply mechanism comprises a second liquid storage tank, a second fluid pump and a third connecting pipeline; the second liquid storage tank, the second fluid pump and the spray head pipeline are sequentially connected through the third connecting pipeline;

the second fluid pump is used for conveying second liquid spraying in the second liquid storage tank to the nozzle.

The invention also provides a working method of the spraying equipment, which comprises the following steps:

acquiring a region to be sprayed on a workpiece;

analyzing the region to be sprayed to obtain spraying data;

acquiring a real-time distance between a workpiece and the nozzle device and a real-time speed of the workpiece relative to the nozzle device;

controlling the first liquid supply mechanism to provide the first liquid spray to the nozzle and/or controlling the second liquid supply mechanism to provide the second liquid spray to the nozzle; and controlling the spray head device to spray the workpiece according to the spray data, the real-time distance and the real-time speed.

In the spraying equipment and the working method thereof provided by the embodiment of the invention, the spray head device is provided with the row of nozzles, so that a spraying mode which takes a line as a unit and is formed by the line is formed, the spray head device can continuously spray the workpiece, the working efficiency is improved, the nozzles on the spray head device are arranged in a straight line, the structure of the spray head device is more compact, the required installation space is small, the spray head device is conveniently and directly fixed on a production line of the workpiece, the existing production line is not required to be modified or other supporting structures are additionally arranged, and the application range of the spraying equipment is enlarged.

Drawings

FIG. 1 is a schematic view of an injection apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a mounting structure of a plurality of shower head devices according to an embodiment of the present invention;

FIG. 3 is a schematic view of a mounting structure of a plurality of spray head devices according to another embodiment of the present invention;

FIG. 4 is a schematic view of a mounting structure of a plurality of spray head devices according to another embodiment of the present invention;

FIG. 5 is a schematic view of a mounting structure of a spray head device according to another embodiment of the present invention;

fig. 6 is a schematic diagram of a region to be sprayed of a workpiece according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of directional unit area data for ejecting the area to be ejected in FIG. 6;

fig. 8 is a flowchart of an operation method of the spraying apparatus according to an embodiment of the present invention.

Reference numerals in the specification are as follows:

1. a spray head device; 11. a support; 12. a nozzle; 121. a nozzle body; 122. a nozzle pipe; 123. a nozzle electronic valve; 13. a shower nozzle pipe; 14. a nozzle cover; 2. a first liquid supply mechanism; 21. a first liquid storage tank; 22. a first fluid pump; 23. a first filter; 24. a pressure sensor; 25. a first electromagnetic valve; 26. a first connecting pipe; 27. a second electromagnetic valve; 28. a second connecting pipe; 29. a back pressure device; 210. a fourth connecting pipe; 211. a first one-way valve; 3. a second liquid supply mechanism; 31. a second liquid storage tank; 32. a second fluid pump; 33. a third connecting pipe; 34. a second filter; 35. a second one-way valve; 4. a first spray; 5. a second spray; 6. a region to be ejected; 7. square cell regions.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1, the spraying device provided by the embodiment of the invention comprises a spray head device 1 and a liquid supply device; the spray head device 1 comprises a support 11 and a row of spray nozzles 12 arranged on the support 11, wherein the row of spray nozzles 12 are arranged along a first direction, and the row of spray nozzles 12 are connected with a liquid supply device; the liquid supply device comprises a first liquid supply mechanism 2 and a second liquid supply mechanism 3; the first liquid supply mechanism 2 is connected with a row of nozzles 12 and is used for supplying first liquid spraying 4 to the nozzles 12; the second liquid supply mechanism 3 is connected to a row of nozzles 12 for supplying the second liquid spray 5 to the nozzles 12.

As an example, the first liquid supply mechanism 2 is a component part that functions as a liquid supply in the ejection apparatus. The first liquid supply mechanism 2 stores first liquid spray 4, and when the first liquid spray 4 needs to be sprayed on a workpiece, the first liquid supply mechanism 2 conveys the stored first liquid spray 4 to the nozzle 12 so that the first liquid spray 4 is sprayed on the workpiece through the nozzle 12; when the first liquid ejection 4 is not required to be ejected, the first liquid supply mechanism 2 stops the feeding of the first liquid ejection 4 to the nozzle 12.

As an example, the second liquid supply mechanism 3 is a component part that functions as a liquid supply in the ejection apparatus. The second liquid supply mechanism 3 stores second liquid spray 5, and when the second liquid spray 5 needs to be sprayed on a workpiece, the second liquid supply mechanism 3 conveys the stored second liquid spray 5 to the nozzle 12 so that the second liquid spray 5 is sprayed on the workpiece through the nozzle 12; when the second liquid ejection 5 is not required to be ejected, the second liquid supply mechanism 3 stops the conveyance of the second liquid ejection 5 to the nozzle 12. By such design, the nozzle 12 is connected with two liquid supply mechanisms, and can meet more spraying requirements.

As an example, the head device 1 is a component part functioning to spray liquid in a spray apparatus. The spray head device 1 comprises a support 11 and a plurality of spray nozzles 12, wherein the spray nozzles 12 are distributed on the support 11 at intervals along a first direction to form a row of spray nozzles 12; that is, when the spraying is performed, the spraying mode of spraying the workpiece by forming the line into the surface by the line is formed by the line of the nozzles 12, so that the spray head device 1 and the workpiece can be always in a state of relative movement in the spraying process, the spray head device 1 can continuously spray the workpiece, and the spraying efficiency is improved. Wherein, the nozzle device 1 can be fixed and the workpiece can be moved; if on the production line of work piece, fix shower nozzle device 1 on the production line, when the work piece was conveyed by the production line through shower nozzle device 1, shower nozzle device 1 sprayed the work piece, need not to stop conveying the work piece simultaneously, does not influence the conveying of work piece, realizes spraying the work piece when conveying the work piece. The workpiece can be fixed, and the nozzle device 1 can be moved; such as an operator holding the spray head device 1 to spray the workpiece.

As shown in fig. 2, 6 and 7, during spraying, the area 6 to be sprayed on the workpiece is decomposed into a plurality of square unit areas 7 distributed in an array, wherein the square unit areas 7 distributed along the first direction are a row of square unit areas 7, the square unit areas 7 distributed along the second direction are a row of square unit areas 7, and the first direction is perpendicular to the second direction; the workpiece moves relative to the spray head device 1 along the second direction, when the workpiece moves to the position that the first row of square unit areas 7 is opposite to the first row of nozzles 12, each nozzle 12 in the first row of nozzles 12 corresponds to each square unit area 7 in the first row of square unit areas 7, namely, each nozzle 12 corresponds to one square unit area 7, the first row of square unit areas 7 are sprayed, when the workpiece moves to the position that the second row of square unit areas 7 is opposite to the first row of nozzles 12, each nozzle 12 corresponds to one square unit area 7, the second row of square unit areas 7 are sprayed, and so on until the workpiece moves to the position that the last row of square unit areas 7 are opposite to the first row of nozzles 12, each nozzle 12 corresponds to one square unit area 7, the spraying of the last row of square unit areas 7 is realized, and the spraying of the area 6 to be sprayed of the workpiece is completed.

In the spraying equipment provided by the embodiment of the invention, the spray head device 1 is provided with the row of nozzles 12, so that a spraying mode which takes a line as a unit and forms a surface by the line is formed, the spray head device 1 can continuously spray workpieces, the working efficiency is improved, the nozzles 12 on the spray head device 1 are arranged in a straight line, the structure of the spray head device 1 is more compact, the required installation space is small, the spray head device 1 is conveniently and directly fixed on a production line of the workpieces, the existing production line is not required to be modified or other supporting structures are additionally arranged, and the application range of the spraying equipment is enlarged.

As an example, the second liquid spraying 5 is the same as the first liquid spraying 4, so that the first liquid spraying 4 in the first liquid supplying mechanism 2 is insufficient, the second liquid supplying mechanism 3 can timely convey the second liquid spraying 5 to the nozzle 12, normal spraying is guaranteed, time is provided for supplementing the first liquid spraying 4 for the first liquid supplying mechanism 2, and the influence on spraying efficiency is avoided.

As another example, the second spray 5 is two different sprays from the first spray 4, the second spray 5 being a dilution of the first spray 4; by such design, the first spray liquid 4 can be diluted to different degrees according to different requirements.

As another example, the second liquid spray 5 and the first liquid spray 4 are two different liquid sprays, and the second liquid spray 5 is a self-cleaning liquid; in this way, before or after the nozzle 12 ejects the first liquid spray 4, the second liquid supply mechanism 3 delivers the self-cleaning liquid to the nozzle 12, so that the self-cleaning liquid can clean the nozzle 12, and the cleanliness of the nozzle 12 is ensured.

In one embodiment, as shown in fig. 1, the spray head device 1 further includes a spray head pipe 13, and the spray head pipe 13 is connected to the first liquid supply mechanism 2 and the second liquid supply mechanism 3, respectively; each nozzle 12 includes a nozzle body 121, a nozzle pipe 122, and a nozzle electronic valve 123; one end of the nozzle pipe 122 is connected to the head pipe 13, and the other end is connected to the nozzle body 121; a nozzle electronic valve 123 is provided on the nozzle pipe 122 for controlling the flow rate of the nozzle pipe 122.

In this example, the nozzle pipes 13 are respectively connected to the first liquid supply mechanism 2 and the second liquid supply mechanism 3, the nozzle pipes 13, the nozzle pipes 122 and the nozzle body 121 are sequentially connected, and each nozzle pipe 122 is provided with a nozzle electronic valve 123 to control the flow of the nozzle pipe 122, that is, the opening and closing of the corresponding nozzle body 121 and the flow of the ejected fluid are controlled by the nozzle electronic valve 123. That is, when each row of square unit regions 7 passes through one row of nozzles 12, the nozzle body 121 corresponding to the square unit region 7 to be ejected in the row of square unit regions 7 is in an open state so that the nozzle body 121 can eject; the nozzle body 121 corresponding to the square cell region 7 which does not need to be ejected in the row of square cell regions 7 is in a closed state so that the nozzle body 121 cannot be ejected. This design facilitates precise control of each nozzle 12 to meet different spray requirements for the workpiece.

As a preferred embodiment, as shown in fig. 2, the head device 1 is provided with a plurality of nozzles 12 all of which are arranged on the same line in the plurality of head devices 1. That is, the projections of the plurality of spray head devices 1 along the first direction overlap, so that the number of the spray head devices 1 is increased to adjust the length of the whole spray head devices 1 along the first direction, so that the length of the whole spray head devices 1 along the first direction is matched with the length of the workpiece along the first direction, the spray head devices 1 and the workpiece can be sprayed only by relative movement in one direction, the relative movement of the spray head devices 1 and the workpiece along the first direction is avoided, and the spray efficiency is improved.

Wherein, the distance between two adjacent nozzles 12 in the first direction is D, the effective distance between two adjacent nozzles 12 spraying on the workpiece is D, and the distance between two adjacent square unit areas 7 in each row of square unit areas 7 is equal to the effective distance between two adjacent nozzles 12 spraying on the workpiece. As an example, as shown in fig. 2, d=d when the moving direction of the workpiece relative to the head device 1 is perpendicular to the first direction. As another example, as shown in fig. 5, the angle between the moving direction of the workpiece relative to the head device 1 and the first direction is a, d=dsina. That is, by adjusting the included angle between the moving direction of the workpiece relative to the head device 1 and the first direction, the effective distance between the two adjacent nozzles 12 spraying on the workpiece can be adjusted, so that the spraying device can be suitable for spraying with different precision, and the application range of the spraying device is enlarged

As another preferred embodiment, as shown in fig. 3, the spray head device 1 is provided with a plurality of spray heads, the projections of the plurality of spray head devices 1 along the second direction are at least partially overlapped, all the spray nozzles 12 on the plurality of spray head devices 1 are staggered, and the first direction is perpendicular to the second direction. That is, the plurality of head devices 1 are arranged at intervals in the second direction, that is, the nozzles 12 in the plurality of head devices 1 are located on different straight lines; and all the nozzles 12 on the plurality of head devices 1 are staggered. By the design, the distance between the nozzles 12 and 12 along the first direction can be adjusted, so that the spraying equipment can meet more precise spraying requirements, the spraying precision is improved, and the application range of the spraying equipment is enlarged.

As an example, as shown in fig. 3, two head devices 1 are provided, and the two head devices 1 are a first head device 1 and a second head device 1, respectively; the workpiece moves along the second direction relative to the nozzle device 1, each row of square unit areas 7 on the workpiece sequentially passes through the first nozzle device 1 and the second nozzle device 1, the first nozzle device 1 sprays a single row of square unit areas 7 in each row of square unit areas 7, and the second nozzle device 1 sprays double rows of square unit areas 7 in each row of square unit areas 7, so that the spraying of each row of square unit areas 7 is completed.

As another preferred embodiment, as shown in fig. 4, the head device 1 is provided in plurality, projections of the plurality of head devices 1 in the first direction do not overlap, and projections of the plurality of head devices 1 in the second direction do not overlap, the first direction being perpendicular to the second direction. That is, the plurality of head devices 1 are distributed in the first direction, and the plurality of head devices 1 are arranged at intervals in the second direction, that is, the nozzles 12 in the plurality of head devices 1 are located on different straight lines. By means of the design, the length of the whole spray head device 1 in the first direction is matched with the length of the workpiece in the first direction, the problem that a plurality of spray head devices 1 cannot be installed due to insufficient installation space on the same straight line along the first direction can be solved, the whole spray head device 1 is installed more flexibly and changeable, and the application range of spray equipment is enlarged.

As an example, as shown in fig. 4, two head devices 1 are provided, and the two head devices 1 are a first head device 1 and a second head device 1, respectively; the workpiece moves relative to the nozzle device 1 along the second direction, and each row of square unit areas 7 on the workpiece sequentially passes through the first nozzle device 1 and the second nozzle device 1; wherein each row of square unit areas 7 is divided into a first part square unit area 7 and a second part square unit area 7, when passing through the first nozzle device 1, the first part square unit area 7 is opposite to the first nozzle device 1, and the nozzle 12 in the first nozzle device 1 sprays the first part square unit area 7; when passing through the second nozzle device 1, the second part square unit area 7 is arranged opposite to the second nozzle device 1, and the nozzles 12 in the second nozzle device 1 spray the second part square unit area 7, so that the spraying of each row of square unit areas 7 is completed.

In the present embodiment, as shown in fig. 1, the head device 1 further includes a head cover 14, and the head cover 14 is detachably mounted on the support 11 to shield the nozzle 12. That is, the support 11 is detachably connected to the head cover 14, and when the head device 1 ejects the workpiece, the support 11 and the head cover 14 are separated so that the nozzle 12 can eject the first liquid ejection 4 or the second liquid ejection 5 onto the workpiece; when the spray head device 1 carries out self-cleaning, the spray head cover 14 is arranged on the supporting piece 11, a sealing space is formed between the supporting piece 11 and the spray head cover 14, the spray nozzle 12 is positioned in the sealing space, so that self-cleaning liquid sprayed out of the spray nozzle 12 is accumulated in the sealing space, and the self-cleaning liquid in the sealing space can be recovered, thereby being beneficial to recycling.

In one embodiment, as shown in fig. 1, the first liquid supply mechanism 2 includes a first liquid storage tank 21, a fluid pressurization stabilization system, a first solenoid valve 25, and a first connection pipe 26; the first liquid storage tank 21, the fluid pressurization stabilizing system, the first electromagnetic valve 25 and the nozzle pipeline 13 are sequentially connected through a first connecting pipeline 26; the fluid pressure-increasing stabilization system is used to deliver the first spray 4 in the first reservoir 21 to the nozzle 12 and regulate the pressure at which the first spray 4 is delivered.

In this example, the first liquid storage tank 21, the fluid pressurization stabilization system, the first solenoid valve 25, and the head pipe 13 are connected in sequence by a first connection pipe 26; when the injection is started, the fluid pressurization stabilizing system provides power to convey the first liquid spray 4 from the first liquid storage tank 21 to the nozzle 12 and spray the first liquid spray onto a workpiece through the nozzle 12; after the injection is completed, the fluid-pressurizing stabilization system is stopped, thereby stopping the delivery of the first spray 4. The first liquid supply mechanism 2 has a simple structure and is convenient to control and operate.

In one embodiment, as shown in fig. 1 and 2, the fluid boost stabilization system includes a first fluid pump 22, a first filter 23, and a pressure sensor 24; the first fluid pump 22 is connected between the first reservoir 21 and the first solenoid valve 25, and the pressure sensor 24 is connected between the first fluid pump 22 and the first solenoid valve 25; the first filter 23 is connected between the first reservoir 21 and the first solenoid valve 25.

In this example, a pressure sensor 24 is located between the first fluid pump 22 and the first solenoid valve 25 for sensing a pressure value of the first spray 4 thereat; the first fluid pump 22 adjusts the pressure value of the first spray 4 outputted from the first fluid pump 22 according to the pressure value of the first spray 4 sensed by the pressure sensor 24 to maintain the stability of the pressure of the first spray 4 in the first connection pipe 26, so that the nozzle 12 stably ejects the first spray 4.

Preferably, the first filter 23 is disposed between the first reservoir 21 and the first fluid pump 22; and/or the first filter 23 is disposed between the first fluid pump 22 and the first solenoid valve 25. By such design, the installation position of the first filter 23 can be selected according to the property of the first spray 4, so that the first filter 23 is installed at a proper position, and smooth conveying of the first spray 4 is ensured.

In one embodiment, as shown in FIG. 1, the fluid-pressurized stabilization system further includes a back pressure device 29 and a fourth connecting conduit 210; one end of the fourth connecting pipe 210 is connected to the first reservoir 21, and the other end of the fourth connecting pipe 210 is connected to the first connecting pipe 26 between the pressure sensor 24 and the first solenoid valve 25; the back pressure device 29 is arranged on the fourth connecting conduit 210. This design is advantageous for better stabilization of the pressure of the first spray 4 in the first connecting conduit 26, ensuring that each nozzle 12 of the spray head device 1 is capable of stably spraying the first spray 4.

Preferably, the back pressure device 29 is a throttle valve or a relief valve.

In one embodiment, as shown in fig. 1, the first liquid supply mechanism 2 further includes a first check valve 211, and the first solenoid valve 25, the first check valve 211, and the nozzle pipe 13 are sequentially connected through a first connection pipe 26.

In this example, the first liquid storage tank 21, the fluid pressurization stabilization system, the first solenoid valve 25, the first check valve 211, and the head pipe 13 are sequentially connected through the first connection pipe 26 to form a supply passage; a first one-way valve 211 is provided between the first solenoid valve 25 and the spray head pipe 13 so that the first spray liquid 4 can only flow from the first solenoid valve 25 to the spray head pipe 13, cannot flow from the spray head pipe 13 to the first solenoid valve 25, and also prevents the second spray liquid 5 in the spray head pipe 13 from flowing back into the first liquid storage tank 21 through the supply passage.

In one embodiment, as shown in fig. 1, the first liquid supply mechanism 2 further includes a second solenoid valve 27 and a second connecting pipe 28, and the first liquid storage tank 21, the second solenoid valve 27 and the head pipe 13 are sequentially connected through the second connecting pipe 28.

In this example, the nozzle pipe 13, the second electromagnetic valve 27 and the first liquid storage tank 21 are connected in sequence through a second connecting pipe 28 to form a return flow channel; so that the supply passage and the return passage are combined to form a circulation passage; that is, the first liquid storage tank 21, the fluid pressurizing stabilization system, the first solenoid valve 25, the first check valve 211, the head pipe 13, the second solenoid valve 27, and the first liquid storage tank 21 are sequentially connected by the first connecting pipe 26 and the second connecting pipe 28 to form a circulation passage; when the first liquid supply mechanism 2 is restarted, the first liquid spray 4 in the first liquid storage tank 21 can be stirred, so that the residual first liquid spray 4 in the first liquid storage tank 21 and the newly added first liquid spray 4 can be uniformly mixed, the concentration of the first liquid spray 4 sprayed each time is consistent, and the performance of the sprayed first liquid spray 4 is ensured to be the same; it is also convenient to carry out impurities retained in the head pipe 13 and the nozzle pipe 122 at the time of maintenance or test of the first liquid supply mechanism 2, avoiding the clogging of the nozzle 12 by the impurities.

In the present embodiment, one end of the fourth connecting pipe 210 is connected to the second connecting pipe 28 located between the first reservoir 21 and the second solenoid valve 27; that is, one end of the fourth connecting pipe 210 is connected to the first reservoir 21 through the second connecting pipe 28.

In one embodiment, as shown in fig. 1, the second liquid supply mechanism 3 includes a second liquid storage tank 31, a second fluid pump 32, and a third connection pipe 33; the second liquid storage tank 31, the second fluid pump 32 and the nozzle pipe 13 are connected in sequence through a third connecting pipe 33; the second fluid pump 32 is used to deliver the second spray 5 in the second reservoir 31 to the nozzle 12.

In this example, the second liquid storage tank 31, the second fluid pump 32 and the head pipe 13 are connected in sequence through a third connecting pipe 33 to form an auxiliary channel; when the second liquid spray 5 is required to be sprayed, the second fluid pump 32 provides power to convey the second liquid spray 5 in the second liquid storage tank 31 to the nozzle 12 through the auxiliary channel; when the second liquid ejection 5 is not required to be ejected, the second fluid pump 32 stops operating, thereby stopping the conveyance of the second liquid ejection 5. The second liquid supply mechanism 3 has simple structure and is convenient to control and operate.

In one embodiment, as shown in fig. 1, the second liquid supply mechanism 3 further includes a second filter 34, and the second liquid storage tank 31, the second filter 34, and the second fluid pump 32 are sequentially connected through a third connection pipe 33. That is, the second filter 34 is disposed on the auxiliary channel, which is favorable for filtering impurities in the second spray 5, and ensures smooth spraying of the nozzle 12.

In the present embodiment, the third connection pipe 33 is communicated to the head pipe 13 through the first connection pipe 26 located between the first check valve 211 and the head pipe 13.

In an embodiment, the second liquid supply mechanism 3 further comprises a second one-way valve 35, and the second fluid pump 32, the second one-way valve 35 and the nozzle pipe 13 are sequentially connected through a third connecting pipe 33; the design is such that the second spray 5 can only flow from the second fluid pump 32 to the spray head pipe 13 and cannot flow from the spray head pipe 13 to the second fluid pump 32, and that the first spray 4 in the spray head device 1 is prevented from flowing into the second reservoir 31 via the second fluid pump 32.

As shown in fig. 8, the present invention further provides a working method of the spraying device according to any one of the foregoing embodiments, including the following steps:

s801: acquiring a region 6 to be sprayed on a workpiece;

s802: analyzing and processing the region 6 to be sprayed to obtain spraying data;

s803: acquiring a real-time distance between a workpiece and the nozzle device 1 and a real-time speed of the workpiece relative to the nozzle device 1;

s804: control the first liquid supply mechanism 2 to supply the first liquid spray 4 to the nozzle 12 and/or control the second liquid supply mechanism 3 to supply the second liquid spray 5 to the nozzle 12; the head device 1 is controlled to spray the workpiece according to the spray data, the real-time distance and the real-time speed.

The region 6 to be sprayed refers to a region on the workpiece to be sprayed. The ejection data refers to the on-off state and on-off time of each nozzle 12 in the head device 1. The real-time distance is the distance between the workpiece detected at the present moment and the head device 1. The real-time speed is the speed at which the workpiece detected at the present moment moves relative to the head device 1.

As an example, as shown in fig. 6 to 8, a controller is used to acquire a region 6 to be ejected on a workpiece; specifically, the pattern of the area 6 to be sprayed is led into a controller, the controller forms a square area containing the area 6 to be sprayed according to the area 6 to be sprayed, and divides the square area into a plurality of square unit areas 7, wherein the square unit areas 7 distributed along the first direction are a row of square unit areas 7, the square unit areas 7 distributed along the second direction are a row of square unit areas 7, each square unit area 7 in each row of square unit areas 7 is arranged in one-to-one correspondence with each nozzle 12 in a row of nozzles 12, when the nth row of square unit areas 7 are moved to be arranged opposite to the row of nozzles 12 of the spray head device 1, the nozzles 12 opposite to the square unit areas 7 in the nth row of square unit areas 7 are switched to an open state, so that spraying is performed on the square unit areas 7, the nozzles 12 opposite to the square unit areas 7 outside the area 6 to be sprayed in the nth row of square unit areas 7 are switched to a closed state, and error spraying is avoided, and thus spraying data opposite to the area 6 to be sprayed is obtained; acquiring a real-time distance between a workpiece and the nozzle device 1 and a real-time speed of the workpiece relative to the nozzle device 1 by adopting a sensing device, and transmitting the real-time distance and the real-time speed to a controller; when the workpiece approaches the spray head device 1, the controller controls the first liquid supply mechanism 2 to provide the first liquid spray 4 to the spray nozzle 12 and/or controls the second liquid supply mechanism 3 to provide the second liquid spray 5 to the spray nozzle 12; and the controller controls each nozzle 12 to switch according to the spraying data, the real-time distance and the real-time speed, and when the to-be-sprayed area 6 of the workpiece passes through the nozzle device 1, the to-be-sprayed area 7 of the first row of square unit areas to the last row of square unit areas 7 sequentially pass through the nozzle device 1, so that the spraying of the workpiece is completed.

In such a design, the pattern of the area 6 to be sprayed is led into the controller before spraying to obtain spraying data, so that the controller can control each nozzle 12 to be opened or closed at corresponding time according to the spraying data, and the spraying mode of taking a line as a unit and forming a surface by the line is adopted to effectively perform accurate spraying on the area 6 to be sprayed of the workpiece, thereby improving the spraying efficiency and the spraying precision. In addition, for different spraying demands, only different patterns of the areas 6 to be sprayed are needed to be imported, and the operation is simpler and more convenient.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. A spraying device is characterized by comprising a spray head device and a liquid supply device;

2. The spraying apparatus of claim 1, wherein the spray head device further comprises a spray head pipe connected to the first liquid supply mechanism and the second liquid supply mechanism, respectively;

3. The spraying apparatus according to claim 1, wherein a plurality of said spray head devices are provided, all of the spray nozzles in a plurality of said spray head devices being disposed on a same line.

4. The spraying apparatus according to claim 1, wherein a plurality of said spray head devices are provided, projections of a plurality of said spray head devices in a second direction at least partially overlap, and all of the nozzles on a plurality of said spray head devices are staggered, said first direction being perpendicular to said second direction.

5. The spraying apparatus according to claim 1, wherein the spray head device is provided in plural, projections of the spray head device in the first direction do not overlap, and projections of the spray head device in the second direction do not overlap, the first direction being perpendicular to the second direction.

6. The spray apparatus of claim 2 wherein said first liquid supply mechanism comprises a first liquid reservoir, a fluid pressurization stabilization system, a first solenoid valve, and a first connecting conduit;

7. The injection apparatus of claim 6 wherein the fluid boost stabilization system comprises a first fluid pump, a first filter, and a pressure sensor; the first fluid pump is connected between the first liquid storage tank and the first electromagnetic valve, and the pressure sensor is connected between the first fluid pump and the first electromagnetic valve; the first filter is connected between the first liquid storage tank and the first electromagnetic valve.

8. The spray apparatus of claim 6 wherein said first liquid supply mechanism further comprises a second solenoid valve and a second connecting conduit, said first liquid reservoir, said second solenoid valve and said spray head conduit being connected in sequence by said second connecting conduit.

9. The spray apparatus of claim 2 wherein said second fluid supply means comprises a second fluid reservoir, a second fluid pump and a third connecting conduit; the second liquid storage tank, the second fluid pump and the spray head pipeline are sequentially connected through the third connecting pipeline;

10. A method of operation for a spraying device as claimed in any one of claims 1 to 9, comprising the steps of:

acquiring a region to be sprayed on a workpiece;

analyzing the region to be sprayed to obtain spraying data;