CN218796673U

CN218796673U - Color changing mechanism and spraying device

Info

Publication number: CN218796673U
Application number: CN202222759720.9U
Authority: CN
Inventors: 舒淦; 陈文彬; 林国正
Original assignee: Guangzhou Zeheng Industrial Co ltd
Current assignee: Guangzhou Zeheng Industrial Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-04-07
Anticipated expiration: 2032-10-19

Abstract

The utility model provides a trade look mechanism and spraying device, it includes concentrator and a plurality of first control valve, the concentrator includes the body and sets up exit channel and a plurality of inlet channel on the body, every inlet channel's first end all with the exit channel is linked together, every inlet channel's second end connects one the first control valve, inlet channel is used for inserting coating, and first control valve is used for controlling rather than the coating supply of inlet channel relative to, outlet channel is used for connecting external equipment; still include the spray gun with trade the exit channel of look mechanism and be connected, perhaps, the spray gun is connected this trade look mechanism and spraying device with the fourth control valve has rational in infrastructure, convenient to use's advantage.

Description

Color changing mechanism and spraying device

Technical Field

The utility model belongs to a spraying equipment technical field, concretely relates to trade look mechanism and spraying device.

Background

The powder spraying is that a high-voltage negative electrode is connected to a metal flow guide mark at the head of the spray gun by utilizing the principle of a high-voltage electrostatic corona electric field, and a sprayed workpiece is grounded to form a positive electrode, so that a stronger electrostatic electric field is formed between the spray gun and the workpiece. When compressed air as carrier gas is used to deliver powder paint from powder supply barrel to guide rod of spray gun through powder tube, the corona discharge generated by high-voltage negative electrode is connected to guide rod to generate dense negative charge, so that the powder paint is charged with negative charge and enters into electrostatic field with very high electric field strength. The spraying effect of the powder spraying is superior to that of the paint spraying process in the aspects of mechanical strength, adhesive force, corrosion resistance, aging resistance and the like, so the powder spraying is widely applied to the production and processing fields such as automobile spraying, furniture spraying and the like.

Further, in order to meet different use requirements, different colors of coatings are often used for spraying the same workpiece, so that a spraying device is required to perform color changing treatment at any time; however, the color changing mechanism in the prior art has a problem of complex structure and easy color mixing or inconvenient use after color changing in the using process, such as a sheet metal surface quick color changing spraying system disclosed in application No. 202010387874.2; specifically, as can be known from the description in the specification, when the color changing mechanism performs color changing, the sliding block drives the connecting port to move to be communicated with the corresponding feeding terminal, so that the switching spraying operation between paints of different colors is realized, that is, more moving parts are arranged in the color changing mechanism, and the structure of the color changing mechanism is relatively complex; that is, the color changing mechanism is made inconvenient to use as described above.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a rational in infrastructure, convenient to use's trade look mechanism and spraying device.

In order to solve the technical problem, the utility model discloses the technical scheme who uses is:

the utility model provides a trade look mechanism, its includes concentrator and a plurality of first control valve, the concentrator includes the body and sets up outlet channel and a plurality of inlet channel on the body, every inlet channel's first end all with outlet channel is linked together, every inlet channel's second end connects one first control valve, inlet channel is used for inserting coating, just first control valve is used for controlling rather than the coating supply of inlet channel, outlet channel is used for connecting external equipment.

As a further improvement of the color changing mechanism, the color changing mechanism further comprises a plurality of three-way connectors, the first end of each three-way connector is correspondingly communicated with one first control valve, the second end of each three-way connector is used for being connected with a compressed air source, and the third end of each three-way connector is connected with the inlet channel.

As a further improvement of the color changing mechanism, a second control valve is connected to the third end of each three-way connector and used for controlling the on-off of a paint passage.

As a further improvement of the color changing mechanism, a third control valve is connected to the second end of each three-way connector and used for controlling the on-off of an air source passage.

As a further improvement of the color changing mechanism, a fourth control valve is connected to the outlet channel and used for controlling the on-off of the paint passage.

As a further improvement of the color changing mechanism, the fourth control valve, the second control valve and the first control valve are all pneumatic squeeze valves.

As a further improvement of the color changing mechanism, the third control valve is an electromagnetic valve.

As a further improvement of the color changing mechanism, an air inlet channel is further arranged on the concentrator, the air inlet channel is communicated with the outlet channel and/or the inlet channel, and the air inlet channel is used for being connected with a compressed air source.

As a further improvement of the color changing mechanism, the air inlet channel is also connected with a third control valve, and the third control valve is used for controlling the on-off of the air source channel.

A spraying device comprises a spray gun and the color changing mechanism, wherein the spray gun is connected with an outlet channel of the color changing mechanism, or the spray gun is connected with a fourth control valve.

Compared with the prior art the beneficial effects of the utility model mainly appear: the device is characterized in that a plurality of inlet channels communicated with the outlet channels are arranged, namely, coatings with different colors are respectively connected to each inlet channel, and a first control valve is arranged on each inlet channel; further, in the process of spraying operation of work, when the paints with different colors need to be switched, the inlet channel of the paint which is not needed to be used temporarily is closed through the corresponding first control valve, and meanwhile, the first control valve on the corresponding inlet channel is opened to enable the paint with the corresponding color to participate in the spraying operation link, namely, the color changing operation of the paint is completed; that is to say, the use of the color changing mechanism effectively simplifies the composition structure, thereby improving the convenience of the use of the color changing mechanism.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. The same reference numerals are used throughout the drawings to denote the same parts, and the drawings are not intended to be drawn to scale in actual size, with emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic view of an overall structure of a color changing mechanism of the present invention;

FIG. 2 is a schematic view of the structure of the concentrator of the present invention;

fig. 3 is a perspective structure schematic diagram of the concentrator of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the illustrated embodiments are not intended to limit the present invention, and in the present embodiments, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and the present invention is described only, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as limited to the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like as used herein are for illustrative purposes only.

As shown in fig. 1 to 3, the present embodiment provides a color changing mechanism, which includes a concentrator 1 and a plurality of first control valves 2, the concentrator 1 includes a body 3, and an outlet channel 4 and a plurality of inlet channels 5 provided on the body 3, a first end of each inlet channel 5 is communicated with the outlet channel 4, a second end of each inlet channel 5 is connected to one first control valve 2, the inlet channel 5 is used for receiving paint, the first control valve 2 is used for controlling paint supply to the inlet channel 5 opposite to the first control valve, and the outlet channel 4 is used for connecting external equipment. Further, each inlet channel 5 is connected to a color of paint, in the present embodiment, eight inlet channels 5 are provided, and the inlet channels 5 are arranged in a radial manner with the center of the body 3 as a base point, that is, eight inlet channels 5 can be connected to eight different colors of paint. Further, in the process of spraying operation of the work, when the paints with different colors need to be switched, the corresponding first control valve 2 is used for closing the inlet channel 5 of the paint which is not needed to be used temporarily, and meanwhile, the first control valve 2 on the corresponding inlet channel 5 is opened, so that the paint with the corresponding color can participate in the spraying operation link, namely, the color changing operation of the paint is completed; that is to say, the use of the color changing mechanism effectively simplifies the composition structure, thereby improving the convenience of the use of the color changing mechanism.

As shown in fig. 1, in a preferred embodiment, the color changing mechanism further comprises a plurality of three-way connectors 6, a first end of each three-way connector 6 is correspondingly communicated with one first control valve 2, a second end of each three-way connector 6 is used for connecting a compressed air source, and a third end of each three-way connector 6 is connected with the inlet channel 5. Specifically, after the paints of different colors are switched, some residual paints inevitably exist in the concentrator 1, and the discharging of the original residual paints through the paints in other connected paint passages requires a relatively long time, and after the compressed air source is connected through the three-way connector 6, the residual paints in the passages can be quickly cleaned through high-speed air flow, so that the color changing preparation time of the color changing mechanism is further shortened. Of course, when the compressed air is used to clean the residual paint in the channel, the first control valve 2 is closed to avoid the compressed air from blowing back to the paint supply end.

In the preferred embodiment, as shown in fig. 1, a second control valve 7 is further connected to the third end of each three-way connector 6, or a second control valve 7 is connected between the three-way connector 6 and the inlet channel 5 of the concentrator 1, and the second control valve 7 is used for controlling the on-off of the paint passage. Because each inlet channel 5 is communicated with the outlet channel 4, each inlet channel 5 can be connected with the other inlet channel, when the compressed air source finishes cleaning and blowing the residual paint in the channels and is connected with the paint with the corresponding color, the paint can move towards the outlet channel 4 and reversely flow towards other inlet channels 5 under the action of pumping pressure, namely the paint flows towards the three-way connector 6, at the moment, the arranged second control valve 7 is in a closed state, the paint can not flow towards the three-way connector 6, and meanwhile, the retention amount of the paint in a color changing mechanism in a non-use state during color changing is reduced, or unnecessary paint waste is reduced.

In a preferred embodiment, as shown in fig. 1, a third control valve 8 is further connected to the second end of each three-way connector 6, the third control valve 8 is used for controlling the on-off of the air source passage, and when the blowing function of the color changing mechanism is not used, the third control valve 8 is arranged to prevent paint from entering the air passage; further, the third control valve 8 in this embodiment is an electromagnetic valve, and the color changing mechanism can be opened or closed quickly in the color changing process by using the electromagnetic valve, so that purging of a corresponding channel in the color changing mechanism is realized. For example, during the color changing preparation, the third control valves 8 in the eight passages are opened simultaneously, that is, compressed air is injected into the inlet channel 5 simultaneously (at this time, the first control valve 2 is in a closed state, and the second control valve 7 is in an open state), so that residual paint in the concentrator 1 and in a spray gun connected with the concentrator 1 can be cleaned and blown, thereby reducing the residual paint in the concentrator 1 and/or the spray gun in an unused state during the color changing process, and compared with other blowing modes, the high-speed blowing of the concentrator 1 by using compressed air can also keep higher cleanliness in the concentrator.

In the preferred embodiment, as shown in fig. 1, a fourth control valve 9 is further connected to the outlet channel 4, and the fourth control valve 9 is used for controlling the on-off of the paint passage; when the lance needs to be replaced or maintained, the fourth control valve 9 can then be used to place the concentrator 1 in a relatively closed environment, i.e. to avoid impurities or foreign bodies entering the concentrator 1. Further, the fourth control valve 9, the second control valve 7 and the first control valve 2 in this embodiment are all pneumatic squeeze valves, and the working principle thereof is as follows: when the control medium is not input, the cavity between the rubber sleeve and the valve body is communicated with the atmosphere, and the rubber sleeve is in an outward tensioning state under the action of fluid pressure. Because the reinforcing cord layers are arranged in the pipe sleeve at a certain angle, the axial pressure and the radial pressure of the pipe sleeve are mutually balanced, and the length and the diameter of the pipe sleeve cannot be changed due to the fluid pressure. When a control medium (air) enters a cavity between the pipe sleeve and the valve body, the pipe sleeve deforms under the pressure of the medium, and therefore closing of the valve is achieved or the flow of the medium passing through is adjusted. Further, the pneumatic squeeze valve is a prior art, and thus, the constituent structure of the pneumatic squeeze valve will not be described herein.

In another embodiment, the concentrator 1 is further provided with an air inlet channel (not shown), the air inlet channel is communicated with the outlet channel 4 and/or the inlet channel 5, and the air inlet channel is used for connecting a compressed air source. Furthermore, the air inlet channel is also connected with a third control valve 8, and the third control valve 8 is used for controlling the on-off of the air source passage. In this embodiment, the intake passage is connected to the convergence point of the plurality of inlet passages 5, that is, when color change is performed by compressed air sweeping, all the inlet passages 5 can be purged only at the same time; after a compressed air source is respectively connected into each inlet channel 5 through the three-way connector 6, one or more inlet channels can be purged as required.

The embodiment also provides a spraying device which comprises a spray gun and the color changing mechanism, wherein the spray gun is connected with the outlet channel 4 of the color changing mechanism, or the spray gun is connected with the fourth control valve 9. Further, during the spraying operation of the spraying device, one inlet channel 5 is in a use state, for example, the black paint is connected to the channel, and at this time, the first control valve 2 and the second control valve 7 connected to the inlet channel 5 are in an open state, and the third control valve 8 is in a closed state; while the second control valve 7 and the third control valve 8 in the other respective inlet channels 5 are in a closed state, of course, the first control valve 2 may also be in a closed state. Further, when it is necessary to switch and use the white paint in the other passage after the use of the black paint is ended (color change), at this time, the first control valve 2 in the black paint passage is closed to cut off the supply of the black paint; next, the third control valve 8 is opened to receive the compressed air, and the residual black paint in the concentrator 1 and the spray gun is purged, but the second control valve 7 located in the passage is opened at this time. Further, the second control valve 7 and the third control valve 8 in the other passages may be both in the closed state at this time; or, the second control valve 7 and the third control valve 8 in the other passages may be both in an open state at this time, that is, at this time, all the passages are connected with compressed air to perform purge on the concentrator 1 together; of course, only some of the eight passages may be opened to purge the concentrator 1. Further, after the cleaning and blowing are completed, that is, after the color changing is completed, the first control valve 2 and the second control valve 7 in the white paint passage are opened, and of course, the third control valve 8 is in a closed state at this time; meanwhile, the second control valve 7 and the third control valve 8 in the other passages are both in the closed state.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. A trade look mechanism which characterized in that: the concentrator comprises a concentrator and a plurality of first control valves, wherein the concentrator comprises a body, an outlet channel and a plurality of inlet channels, the outlet channel and the inlet channels are arranged on the body, the first end of each inlet channel is communicated with the outlet channel, the second end of each inlet channel is connected with one first control valve, the inlet channels are used for being connected with coating, the first control valves are used for controlling the coating supply of the inlet channels relative to the first control valves, and the outlet channels are used for being connected with external equipment.

2. The color changing mechanism of claim 1, wherein: the three-way valve is characterized by further comprising a plurality of three-way connectors, the first end of each three-way connector is correspondingly communicated with one first control valve, the second end of each three-way connector is used for being connected with a compressed air source, and the third end of each three-way connector is connected with the inlet channel.

3. The color changing mechanism of claim 2, wherein: and the third end of each three-way connector is also connected with a second control valve, and the second control valve is used for controlling the on-off of the coating passage.

4. The color-changing mechanism of claim 3, wherein: and the second end of each three-way connector is also connected with a third control valve, and the third control valve is used for controlling the on-off of the air source passage.

5. The color changing mechanism of claim 4, wherein: and the outlet channel is also connected with a fourth control valve, and the fourth control valve is used for controlling the on-off of the coating passage.

6. The color changing mechanism of claim 5, wherein: the fourth control valve, the second control valve and the first control valve are all pneumatic squeeze valves.

7. The color changing mechanism of claim 4, wherein: the third control valve is a solenoid valve.

8. The color changing mechanism of claim 1, wherein: the concentrator is also provided with an air inlet channel, the air inlet channel is communicated with the outlet channel and/or the inlet channel, and the air inlet channel is used for being connected with a compressed air source.

9. The color-changing mechanism of claim 8, wherein: and the air inlet channel is also connected with a third control valve, and the third control valve is used for controlling the on-off of the air source passage.

10. A spray coating device characterized in that: comprising a spray gun and a colour change mechanism according to any one of claims 1-9, the spray gun being connected to the outlet channel of the colour change mechanism or the spray gun being connected to a fourth control valve.