CN211051759U

CN211051759U - Spray gun assembly and powder spraying device

Info

Publication number: CN211051759U
Application number: CN201921395932.5U
Authority: CN
Inventors: 左建明
Original assignee: Guangdong Zeheng Intelligent Technology Co ltd
Current assignee: Guangdong Zeheng Intelligent Technology Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-07-21
Anticipated expiration: 2029-08-26

Abstract

The utility model provides a spray gun subassembly and powder spray device for to work piece spraying material powder, this spray gun subassembly includes first spray gun group, second spray gun group and sliding seat, first spray gun group includes a plurality of first spray guns of mutual fixed connection, second spray gun group also includes a plurality of second spray guns of mutual fixed connection, first spray gun group with the first end of second spray gun group is close to each other, and the second end is kept away from each other, the injection direction of first spray gun group with the second spray gun group deviates from each other, the second end of first spray gun group with the second spray gun group all slidable ground fixed connection in on the sliding seat; the structure of the spray gun component is more stable when the spray gun is moved in the horizontal direction, the moving distance of the spray gun is not restricted by the moment, and the occupied space of the spray gun component is relatively small.

Description

Spray gun assembly and powder spraying device

Technical Field

The utility model relates to a spraying equipment field, in particular to spray gun subassembly and powder spray device.

Background

Electrostatic spraying is a spraying method which utilizes a high-voltage electrostatic electric field to make negatively charged paint particles directionally move along the direction opposite to the electric field and adsorb the paint particles on the surface of a workpiece. The electrostatic spraying technology has wide application range because a thicker coating can be obtained by one-time coating. Along with the development of society, the degree of automation is higher and higher, and the application of spraying production line is also wider and wider to go deep into a plurality of fields of national economy. The spraying equipment on the market can be divided into the following according to the degree of automation: manual spraying equipment, semi-automatic spraying equipment and full-automatic spraying equipment. The work flow of the existing automatic spraying device is generally that a workpiece is conveyed to a spraying station, paint is sprayed on the workpiece by using spraying equipment, and then the workpiece enters a curing chamber to be cured in an illumination mode, so that a finished product is finally obtained.

When materials are sprayed on longer workpieces such as a curtain rod, the workpieces are generally hung by a hanger in the prior art, and the workpieces sequentially enter a powder spraying room under the driving of a transmission rail and move up and down through a spray gun, so that the spraying is realized. The spray gun on the existing spray gun assembly needs to move in the horizontal direction to change the distance between the spray gun and a workpiece, so that the moment of the spray gun needs to be changed, the movement of the spray gun is restrained by the moment, the movable amount of the spray gun is limited, and the structure is unstable when the spray gun moves.

SUMMERY OF THE UTILITY MODEL

Therefore, a spray gun assembly and a powder spraying device which are stable in structure and free from the restriction of torque on the horizontal movement of the spray gun are needed.

An embodiment of the utility model provides a spray gun subassembly for to work piece spraying material powder, including first spray gun group, second spray gun group and sliding seat, first spray gun group is including a plurality of first spray guns, second spray gun group also includes a plurality of second spray guns, first spray gun group with the first end of second spray gun group is close to each other, and the second end keeps away from each other, first spray gun group with the injection direction of second spray gun group deviates from each other, first spray gun group with the second end of second spray gun group all slidable ground fixed connection in on the sliding seat.

In a preferred embodiment, the angle between the first spray gun group and the second spray gun group is 30-90 °.

In a preferred embodiment, the first spray gun group comprises a first fixing member, and the first spray gun is fixed on the first fixing member; the second spray gun group comprises a second fixing piece, the second spray gun is fixed on the second fixing piece, and the first fixing piece and the second fixing piece are fixedly connected to the sliding seat in a sliding mode.

In a preferred embodiment, the spraying direction of the first spray gun and the direction of the first fixing piece extending towards the inner side of the powder spraying cavity form an acute angle; and/or the presence of a gas in the gas,

the second spray gun and the second fixing piece form an acute angle, and the spraying direction of the second spray gun and the direction of the second fixing piece extending towards the inner side of the powder spraying cavity form an acute angle. In a preferred embodiment, a first linear power device and a second linear power device are arranged on the sliding seat, the first linear power device is fixedly connected with the first spray gun group, the second linear power device is fixedly connected with the second spray gun group, and the first linear power device and the second linear power device drive the first spray gun group and the second spray gun group to approach to each other or to be away from each other.

In a preferred embodiment, the first spray gun group and the second spray gun group are located on the same horizontal plane.

In a preferred embodiment, the sum of the lengths of the first and second spray gun groups is 1.5 m to 4 m.

The utility model also provides a powder spraying device, including powder room body and any one of the aforesaid spray gun subassembly, be provided with the powder spraying chamber on the powder room body, the spray gun subassembly is located the intracavity of dusting, just the first end of first spray gun group and second spray gun group is located the inboard of powder room body.

In a preferred embodiment, the powder chamber body comprises a first side wall and a second side wall, the first ends of the first side wall and the second side wall are close to each other, the second ends of the first side wall and the second side wall are far away from each other, and the first side wall and the second side wall are provided with powder spraying cavities; the maximum included angle between the first side wall and the second side wall is 50-70 degrees.

In a preferred embodiment, a powder cleaning assembly is arranged on the inner wall of the powder chamber body, a plurality of gas injection holes are arranged on the powder cleaning assembly, and the gas injection holes spray positively charged gas onto the inner wall of the powder chamber body; and/or the presence of a gas in the gas,

the bottom wall of the powder chamber body is an inclined plane with a low inner side and a high outer side, a plurality of air knives are arranged on the outer side of the inclined plane, and the included angle between the air blowing direction of the air knives and the bottom wall is 0-30 degrees; and/or the presence of a gas in the gas,

the second side wall is further fixedly provided with a hanging tool powder cleaning assembly, the hanging tool powder cleaning assembly is provided with an air outlet, and the second side wall is provided with an air suction opening.

The utility model fixes the first spray gun group and the second spray gun group on the sliding seat, when in use, the workpiece is placed in the spraying direction of the first spray gun group and the second spray gun group, the distance between the spray gun and the workpiece can be changed under the condition of not changing the moment of the spray gun by sliding the first spray gun group and the second spray gun group, the distance variation between the spray gun and the workpiece is not restrained by the moment any more, and the structure is more stable; in addition, the first end of first spray gun group and the first end of second spray gun group are close to each other, can reduce the moment of spray gun, reduce spray gun subassembly occupation space.

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. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic top view of a powder spraying device according to a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the powder chamber body and spray gun assembly of the preferred embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is another exploded view of the powder chamber body according to the preferred embodiment of the present invention;

fig. 5 is an overall structure view of the air valve according to the preferred embodiment of the present invention;

FIG. 6 is a front view of the powder chamber body according to the preferred embodiment of the present invention;

FIG. 7 is an exploded view of the powder chamber body according to the preferred embodiment of the present invention;

FIG. 8 is an overall view of the powder cleaning assembly according to the preferred embodiment of the present invention;

FIG. 9 is an overall structure view of the powder chamber body according to the preferred embodiment of the present invention;

fig. 10 is an overall structure diagram of the powder cleaning component of the hanging tool according to the preferred embodiment of the invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings.

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 and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-3, an embodiment of the present invention provides a spray gun assembly for spraying powder onto a workpiece, where the spray gun assembly is located in a powder chamber body 3 in fig. 1. The spray gun assembly comprises a first spray gun group 21, a second spray gun group 22 and a sliding seat 20, wherein the first spray gun group 21 comprises a plurality of second spray guns fixedly connected with each other, and the second spray gun group 22 also comprises a plurality of second spray guns fixedly connected with each other. The first ends of the first spray gun group 21 and the second spray gun group 22 are close to each other, the second ends of the first spray gun group 21 and the second spray gun group 22 are far away from each other, the first spray gun group 21 and the second spray gun group 22 form a V shape, and occupied spraying space is small. The spraying directions of the first spray gun group 21 and the second spray gun group 22 are deviated from each other, so that the first spray gun group 21 and the second spray gun group 22 do not affect each other. The second ends of the first spray gun group 21 and the second spray gun group 22 are slidably and fixedly connected to the sliding base 20, and the distance between the spray guns and the workpiece is changed by sliding the first spray gun group 21 and the second spray gun group 22 on the sliding base 20.

In a preferred embodiment, the angle between the first spray gun group 21 and the second spray gun group 22 is 30-90 °, in particular, the angle between the first spray gun group 21 and the second spray gun group 22 is 40 °, 50 °, 60 °, 70 °, or 80 °.

In the preferred embodiment, the first spray gun group 21 includes a first fixing member 212, and the first spray gun is fixed to the first fixing member 212. The second spray gun group 22 includes a second fixing member 222, the second spray gun is fixed on the second fixing member 222, and the first fixing member 212 and the second fixing member 222 are slidably and fixedly connected to the sliding seat 20. Further, the first fixing member 212 and the second fixing member 222 are both strip-shaped plates; alternatively, the first fixing member 212 and the second fixing member 222 are both linear frame-shaped structures.

In a further preferred embodiment, the first spray gun is at an acute angle to the first fixed member 212, and the spray end of the first spray gun is inclined away from the sliding seat 20. The second spray gun forms an acute angle with the second fixing member 222, and the spraying end of the second spray gun is inclined in a direction away from the sliding seat 20. The torque fixed to the first spray gun and the second spray gun is reduced.

In the preferred embodiment, the sliding base 20 is provided with a first linear power device and a second linear power device, the first linear power device is fixedly connected with the first spray gun group 21, and the second linear power device is fixedly connected with the second spray gun group 22. The first linear power device 210 and the second linear power device 220 drive the first spray gun group 21 and the second spray gun group 22 to approach each other or move away from each other. When the first spray gun group 21 and the second spray gun group 22 are far away from each other, the first spray gun and the second spray gun are closer to the workpiece, and when the first spray gun group 21 and the second spray gun group 22 are close to each other, the first spray gun and the second spray gun are farther from the workpiece.

In the preferred embodiment, the first spray gun group 21 and the second spray gun group 22 are located on the same horizontal plane, and both spray on the same plane of the workpiece, so that the resistance generated between the powder flows of the first spray gun and the second spray gun during powder spraying is reduced, and the powder spraying effect is better.

In a preferred embodiment, the sum of the lengths of the first and second gun groups 21, 22 is 1.5 meters to 4 meters, and specifically, the sum of the lengths of the first and second gun groups 21, 22 is 2 meters, 2.2 meters, 2.5 meters, 3 meters, or 3.5 meters. Among the prior art, the spray distance of spray gun subassembly generally all is about 1 meter, otherwise, the volume in whitewashed chamber just must be increased, and then influence updraft ventilator to retrieve useless powder, it is serious to lead to the ease powder, and the length of first spray gun group 21 and second spray gun group 22 in this application with be greater than 2 meters, and occupation space is few when spraying, need not increase the volume in whitewashed chamber, and can reduce the biggest angle in whitewashed chamber of spouting, improve the air drafting effect, the ability waste that reduces the air exhauster, reduce the ease powder.

Referring to fig. 1-10, the present invention fixes the first spray gun set 21 and the second spray gun set 22 on the sliding seat 20, when in use, the workpiece is placed in the spraying direction of the first spray gun set 21 and the second spray gun set 22, the distance between the spray gun and the workpiece can be changed by sliding the first spray gun set 21 and the second spray gun set 22 without changing the moment of the spray gun, the structure is more stable, and the distance change between the spray gun and the workpiece is no longer constrained by the moment; in addition, the first end of the first spray gun group 21 and the first end of the second spray gun group 22 are close to each other, so that the moment of the spray gun can be reduced, and the occupied space of the spray gun assembly can be reduced.

The utility model also provides a powder spraying device, including powder room body 3 and the spray gun subassembly 2 of any of the above-mentioned, be provided with powder spraying chamber 30 on the powder room body 3, spray gun subassembly 2 is located powder spraying chamber 30, and the first end of first spray gun group 21 and second spray gun group 22 is located powder room body 3's inboard (be close to the inside of powder spraying chamber 30 promptly).

In the preferred embodiment, the powder chamber body 3 comprises a first side wall 31 and a second side wall 32, the first ends of the first side wall 31 and the second side wall 32 are close to each other, the second ends of the first side wall 31 and the second side wall 32 are far away from each other, and the first side wall 31 and the second side wall 32 are formed with a powder spraying cavity 30; the maximum included angle between the first side wall 31 and the second side wall 32 is 50-70 deg..

In the preferred embodiment, the powder cleaning assembly 7 is arranged on the inner wall of the powder chamber body 3, and the powder cleaning assembly 7 is provided with a plurality of gas injection holes which inject positively charged gas onto the inner wall of the powder chamber body 3. The bottom wall 37 of the powder chamber body 3 is an inclined plane with a low inner side and a high outer side, a plurality of air knives 8 are arranged on the outer side of the inclined plane, and the included angle between the blowing direction of the air knives 8 and the bottom wall 37 is 0-30 degrees. The second side wall 32 is further fixed with a hanging tool powder cleaning assembly 9, an air outlet 920 is arranged on the hanging tool powder cleaning assembly 9, and an air suction opening is arranged on the second side wall 32.

Referring to fig. 1-10, in another preferred embodiment, the dusting apparatus comprises a powder chamber body 3, a spray gun assembly 2 and a transfer rail 1. The powder chamber body 3 comprises a first side wall 31 and a second side wall 32, the first ends of the first side wall 31 and the second side wall 32 are close to each other, the second ends of the first side wall 31 and the second side wall 32 are far away from each other, a powder spraying cavity 30 is formed on the first side wall 31 and the second side wall 32, and the powder spraying cavity 30 is approximately in a V shape. The spray gun assembly 2 comprises a first spray gun group 21 and a second spray gun group 22, the first spray gun group 21 and the second spray gun group 22 are positioned in a powder spraying cavity 30, the powder spraying direction of the first spray gun group 21 faces to a first side wall 31, and the powder spraying direction of the second spray gun group 22 faces to the second spray gun group 22. The first ends of the first spray gun group 21 and the second spray gun group 22 are close to each other, the second ends are far away from each other (the end close to the inside of the powder spraying cavity 30 is the first end, and the other end is the second end), and the first spray gun group 21 and the second spray gun group 22 form a V shape and are matched with the shape of the powder spraying cavity 30. A first powder spray area 301 is formed between the first side wall 31 and the first gun group 21, a second powder spray area 302 is formed between the second gun group 22 and the second side wall 32, and the conveying rail 1 passes through the first powder spray area 301 and the second powder spray area 302. During spraying, the workpiece moves on the conveying track 1, and when passing through the powder spraying chamber 30, the workpiece is sprayed with negatively charged powder by the first and second gun groups 21 and 22 in the first and second

powder spraying areas

301 and 302. The utility model discloses change traditional spray gun layout mode, be two rows with the spray gun setting, and set up with the cooperation of spraying chamber, spray gun more that can the overall arrangement has increased the powder receiving distance of work piece in the chamber 30 that dusts. The included angle between the first spray gun group 21 and the second spray gun group 22 is set, so that the included angle of the powder spraying cavity 30 can be reduced, the air draft effect is improved, and the powder escape is reduced.

Referring to fig. 1, in a preferred embodiment, the maximum included angle between the first side wall 31 and the second side wall 32 is 50-70 °, in particular 55 °, 60 ° or 65 °. Further, the second ends of the first side wall 31 and the second side wall 32 are bent in a direction approaching each other, so that the second ends of the first side wall 31 and the second side wall 32 are parallel to each other. The whole powder spraying room is like an air draft cover, the air flow flows along the wall, the smaller the included angle is, the smaller the air resistance coefficient is, and the air flow to the air inlet is linear. The larger the included angle is, the wind flow is bent to the air inlet, and the wind power is blocked, so that the wind speed of the wind flow passing through the straight line is far higher than that of the bent channel type wind flow. The powder sprayed by the spray gun is in the direct current, and the powder is not easy to escape if the wind speed is high. The main reason for the escape of the powder is that the local wind speed is too low to suck the powder, and the powder moves to the outside of the powder room according to the inertia of the powder. Therefore, the smaller the angle between the first side wall 31 and the second side wall 32, the better effect of reducing the escape of the powder is achieved. The contained angle of current powder room both sides wall is with 180 more, adopts 90 or about 75 for some, and its ease powder volume is big, and the utility model discloses further reduce the biggest contained angle between the both sides wall, reduce updraft ventilator 4's energy consumption, the convulsions effect is better, solves the problem of ease powder from the root.

In the preferred embodiment, the included angle between the spraying direction of the first spray gun group 21 and the conveying track 1 in the first powder spraying area 301 is 80-90 degrees, the spray guns move up and down and spray the workpieces, the spraying direction of the powder is nearly vertical to the workpieces, and the powder coating effect is better. In the prior art, the workpiece is generally only partially kept in the powder receiving distance, and the discharging direction of the spray gun is approximately vertical to the workpiece. In the application, the spraying of the workpiece is kept vertical all the time in the whole powder receiving process, so that full positive powder spraying is realized, and the powder feeding efficiency is improved by 1 time.

In the preferred embodiment, the included angle between the spraying direction of the second spray gun group 22 and the conveying track 1 in the second powder spraying area 302 is 80-90 degrees, the spray guns spray the workpiece when moving up and down, the spraying direction of the powder is nearly vertical to the workpiece, and the powder coating effect is better. In the prior art, the workpiece is generally only partially kept in the powder receiving distance, and the discharging direction of the spray gun is approximately vertical to the workpiece. In the application, the spraying of the workpiece is kept vertical all the time in the whole powder receiving process, so that full positive powder spraying is realized, and the powder feeding efficiency is improved by 1 time.

In a preferred embodiment, the sum of the lengths of the first and second spray gun groups 21, 22 is between 1.5 and 4 meters, in particular the sum of the lengths of the first and second spray gun groups 21, 22 is 2 meters, 2.2 meters, 2.5 meters, 3 meters or 3.5 meters. Furthermore, the first spray gun group 21 and the second spray gun group 22 can spray powder, the powder receiving distance of the workpiece breaks through the limit of the conventional length of the main body and is less than 1 meter, the conventional distance is 2 times 2.2 meters, and the powder spraying efficiency is improved.

In the preferred embodiment, the spray gun assembly 2 further comprises a power device 23, a guide device 24 and a transmission device 25, the first spray gun group 21 and the second spray gun group 22 are both connected with the transmission device 25, the transmission device 25 is connected with the power device 23, and the power device 23 drives the first spray gun group 21 and the second spray gun group 22 to move along the direction of the guide device 24. Further, the guide device 24 is two vertically arranged guide rods, and the first spray gun group 21 and the second spray gun group 22 move repeatedly in the up-down direction along the guide rods.

Referring to fig. 2, in a preferred embodiment, the transmission device 25 includes a rotating shaft, a driving wheel, a driven wheel and a transmission belt, an output shaft of the power device 23 is connected with the rotating shaft, the rotating shaft is connected with the driving wheel, the transmission belt surrounds the driving wheel and the driven wheel, the transmission belt is connected with the first spray gun group 21 and the second spray gun group 22, the rotating shaft, the driving wheel, the driven wheel and the transmission belt are all fixed in the protective shell, and the rotating shaft, the driving wheel, the driven wheel, the transmission belt and the protective shell form a guide. In the prior art, a device which is generally made by adopting a linear air cylinder, a linear electric cylinder or a similar linear electric cylinder principle drives the spray gun component 2 to move up and down, but the wear of the spray gun component is fast and unstable. The utility model discloses a transmission 25 structure is more stable, difficult wearing and tearing.

Referring to fig. 4 and 5, in a preferred embodiment, the power device 23 drives the first spray gun group 21 and the second spray gun group 22 to move up and down, the powder chamber body 3 is provided with a plurality of air valves 33, the air valves 33 are arranged at different heights, when the spray gun assembly 2 slides up and down, the corresponding air valve 33 is opened, and the other air valves 33 are closed. That is, the air valve 33 is opened concomitantly with the movement of the spray gun assembly 2, the opening of the air valve 33 is close to the spray gun assembly 2, the powder pumping effect is better, and the possibility of powder escaping is smaller. The air valve 33 can be selectively opened along with the spray gun assembly 2, and is opened and closed along with the up-and-down movement of the spray gun assembly 2, so that the optimal recovery air flow layer is always processed during the operation of the spray gun, the recovery energy consumption and power are reduced, and the recovery efficiency is improved.

In another preferred embodiment, the power unit 23 moves the first and second spray gun groups 21 and 22 in the up-and-down direction, and the amount of powder sprayed when the spray gun assembly 2 is located at the upper and lower ends of the workpiece is 50% -70% of the amount of powder sprayed when the spray gun assembly is located at the middle position. In the moving process of the spray gun, the spray gun moves at the uniform speed in the middle position, and the spray gun has a turning action in the two end positions, so that the moving speed of spray painting is influenced. In a further preferred embodiment, the upper end of the workpiece occupies 0.1-0.5% of the total length of the workpiece, the lower end of the workpiece occupies 0.1-0.5% of the length of the workpiece, and the portion between the upper and lower ends of the workpiece is the middle of the workpiece. Specifically, the up-and-down movement length of the spray gun component 2 is 3-30 meters, the upper end refers to 0 and 2-1 meter at the upper end of the workpiece, and the lower end refers to 0.2-1 meter at the lower end of the workpiece. The movement mode of the spray gun assembly 2 solves many problems of the conventional spray gun assembly 2, such as the defects of incapability of sealing dust prevention, explosion prevention, shaking in operation, delay in reciprocating rotation, stroke fixing by a stroke switch and the like, and realizes the effects of dust prevention, explosion prevention, no shaking in operation, no delay in reciprocating rotation, digital input and arbitrary stroke calling.

Referring to fig. 3, in the preferred embodiment, the spray gun assembly 2 further comprises a sliding seat 20,

linear power units

210 and 220, and guide units 24, two guide units 24 being provided, the sliding seat 20 being simultaneously slidably connected to the two guide units 24; the two

linear power devices

210 and 220 are fixed on the sliding seat 20, and respectively drive the first spray gun group 21 and the second spray gun group 22 to slide along the sliding seat 20 in the horizontal direction, the first spray gun group 21 is connected with one of the

linear power devices

210 and 220 through a first sliding block 211, and the second spray gun group 22 is connected with one of the

linear power devices

210 and 220 through a second sliding block 221. The first spray gun group 21 and the second spray gun group 22 slide on the sliding seat 20 to change the distance between the spray gun and the workpiece, and can simultaneously move horizontally when the spray gun moves up and down. Among the prior art, the spray gun removes the distance that generally all can change the spray gun apart from the spray gun seat at the horizontal direction, and the spray gun can lead to the structure unstability of spray gun when the distance of spray gun apart from the spray gun seat is big, so, among the prior art, the horizontal migration distance of spraying paint is little, and it is big to realize the degree of difficulty, generally hardly realizes spray gun horizontal migration and reciprocates and go on simultaneously. And the utility model discloses a thereby first spray gun group 21 and second spray gun group 22 are through the distance that slides along sliding seat 20 and change spray gun and work piece, though changed the horizontal distance of spraying paint with the work piece, but do not change the moment between spray gun and the sliding seat 20, so, this technique realizes more the container, and the structure is also more stable, can realize that the spray gun reciprocates and horizontal migration goes on simultaneously.

Referring to fig. 3, in a preferred embodiment, the first spray gun group 21 comprises a first fixed part 212, a plurality of spray guns are fixed on the first fixed part 212, the second spray gun group 22 comprises a second fixed part 222, a plurality of spray guns are also fixed on the second fixed part 222, the first fixed part 212 is parallel to a conveying guide rail located in the first powder spraying area 301, and the second fixed part 222 is parallel to a conveying guide rail located in the second powder spraying area 302. When the first spray gun group 21 moves horizontally, the spraying directions of all spray guns of the first spray gun group 21 can be ensured to be always vertical or nearly vertical to the transmission guide rail 1 in the first powder spraying area 301; similarly, when the second spray gun group 22 moves horizontally, it can be ensured that the spraying directions of all the spray guns of the second spray gun group 22 can be always kept vertical or nearly vertical to the conveying guide rail 1 in the second powder spraying area 302; thereby ensuring that the thickness of the sprayed powder is always the same. In the prior art, the distance between the spray gun and the workpiece can not be moved horizontally and moved up and down simultaneously, and the distance between the spray gun and the workpiece can not be adjusted in the powder spraying process according to requirements.

Referring to fig. 6 and 8, in a preferred embodiment, the powder cleaning assembly 7 is arranged on the inner wall of the powder chamber body 3, and the powder cleaning assembly 7 is provided with a plurality of gas injection holes which inject positively charged gas onto the inner wall of the powder chamber body 3. The powder cleaning component 7 automatically cleans the powder adhered to the side wall in the powder spraying cavity 30 every period of time, the powder is firmly adhered to the side wall of the powder spraying cavity 30 due to the fact that the powder has negative charges, the negative charges of the powder can be neutralized by the gas with positive charges, the powder can fall off from the side wall more easily, and the powder is taken away by the air draft device 4.

In a further preferred embodiment, the powder cleaning assembly 7 comprises a first air outlet pipe 71 and a second air outlet pipe 72, the first air outlet pipe 71 and the second air outlet pipe 72 are respectively matched with the shapes of the first side wall 31 and the second side wall 32, the first air outlet pipe 71 moves up and down along the first side wall 31, and the second air outlet pipe 72 moves up and down along the second side wall 32, so that the powder on the first side wall 31 and the second side wall 32 can be cleaned. Conventional roll up curtain adhesion and scrape the powder and cause the clearance incomplete, and the wearing parts is many, the utility model discloses a static neutralization realizes not having wearing parts, and the clearance is more swift, thorough.

In a further preferred embodiment, the positively charged air is generated by the cooperation of an air compressor and a positive ion generator.

Referring to fig. 2, in the preferred embodiment, the bottom wall 37 of the powder chamber body 3 is an inclined plane with a low inner side and a high outer side (the inner side of the bottom wall 37 is a side close to the air duct 42, and the outer side of the bottom wall 37 is a side close to the opening of the powder spraying chamber 30), and a plurality of air knives 8 are arranged on the outer side of the bottom wall, and the blowing direction of the plurality of air knives 8 forms an angle of 0-30 ° with the bottom wall 37. Air knife 8 blows off the air of positive electricity, cuts diapire 37 and blows inwards, and is same, and the bottom of powder room body 3 is provided with the feed inlet, and the feed inlet is linked together with the wind channel, and in the powder room entered into the wind channel through the feed inlet, updraft ventilator 4 and air knife 8 simultaneous action will powder room bottom clout clean up. The conventional structure of turning over modes such as board, plane side suction is complicated, does not coincide the linear demand of fluid power, causes to hide defects such as powder, long-pending powder, stifled powder, the utility model discloses a structure realizes opening completely, and the air knife is regularly blowing clearly, stops completely to hide powder, long-pending powder, stifled powder.

Referring to fig. 9 and 10, in a preferred embodiment, a rack dust cleaning assembly 9 is further fixed on the second side wall 32, the rack dust cleaning assembly 9 includes a fixing seat 91 and an air outlet pipe 92, the air outlet pipe 92 is provided with an air outlet 920, and the second side wall 32 is provided with an air suction opening. The hanger powder cleaning component 9 is a fixed air duct, a plurality of air outlets 920 are arranged on the air duct, compressed air with positive electricity is blown out of the air outlets 920, the positive electricity is neutralized with negative charges on the hanger, and the material powder falls off from the hanger and is sent into an air suction pipeline under the combined action of an exhaust fan and the hanger powder cleaning component 9. Current spraying device does not set up hanger clearance subassembly, the utility model discloses before advancing solidification to do after the operation of dusting, once only clear up the secondary hanger on line at spraying in-process adhesion powder, thoroughly solve the secondary hanger clearance and suffer from admittedly.

Referring to fig. 4 and 5, in a preferred embodiment, the powder chamber body 3 further comprises an air draft device 4, the air draft device 4 comprises an air draft fan and an air duct 41, a plurality of air valves 33 are arranged between the first end of the first side wall 31 and the first end of the second side wall 32, the plurality of air valves 33 are arranged in sequence from top to bottom, and each air valve 33 is communicated with the air duct 41.

In a preferred embodiment, the air valve 33 includes an air deflector 331 and a rotary power device 332, the rotary power device 332 drives the air deflector 331 to rotate, and the rotation angle of the air deflector 331 is 0 to 40 °, specifically 10 °, 20 ° or 30 °. The air valve 33 is provided with a plurality of air deflectors 331 which are arranged in sequence from top to bottom, the rotary power device 332 drives the air deflectors 331 to rotate, so that the air valve 33 is opened or closed, and the obliquely arranged air deflectors 331 can also play a role in guiding the wind direction.

In another preferred embodiment, the air valve 33 includes an air deflector 331 and a rotary power device 332, the rotary power device 332 drives the air deflector 331 to rotate in a direction perpendicular to the horizontal plane, an upper end of the air deflector 331 is inclined away from the powder spraying chamber 30, and an angle of rotation of the air deflector 331 is 0-40 °. In particular 10 °, 20 ° or 30 °. The air valve 33 is provided with a plurality of air deflectors 331 which are arranged in sequence from top to bottom, the rotary power device 332 drives the air deflectors 331 to rotate, so that the air valve 33 is opened or closed, and the obliquely arranged air deflectors 331 can also play a role in guiding the wind direction. The air draft device 4 draws air upward, so the upper end of the air deflector 331 is inclined in a direction away from the powder spraying chamber 30.

Referring to fig. 7, in a preferred embodiment, the powder chamber body 3 includes an outer frame 35 and a connecting plate (the connecting plate includes a first side wall 31 and a second side wall 32), the outer frame 35 includes a base 351, a top cover 352 and a plurality of connecting rods 353, the base 351 is integrally disposed, the top cover 352 is also integrally disposed, the plurality of connecting rods 353 are connected between the top cover 352 and the base 351, the connecting rods 353 and the top cover 352, and the connecting rods 353 are all fixedly connected by quick-release screws, and the integral arrangement enables the powder chamber body 3 to resist ground collapse, and a small amount of ground collapse does not affect the overall structure of the powder chamber body 3. The setting of rapid disassembly structure makes things convenient for this powder room body 3 installation dismantlement and maintenance. In the prior art, the outer frame 35 generally adopts a stand column combined structure, has poor body integrity, realizes an integral cage-shaped structure, and naturally has the functions of resisting earthquake and preventing settlement on the ground.

In a preferred embodiment, the powder chamber body 3 includes an outer frame 35 and a connecting plate (the connecting plate includes the first side wall 31 and the second side wall 32), the outer frame 35 includes a base 351, a top cover 352 and a plurality of connecting rods 353, the base 351, the top cover 352 and the plurality of connecting rods 353 are all made of conductive materials, and conductive paste is coated in connecting gaps between the connecting rods 353 and the base 351, between the connecting rods 353 and the top cover 352 and between the connecting rods 353 and the connecting rods 353, so that the conductivity of the outer frame 35 is better, and the outer frame 35 is grounded through a grounding wire. In the spraying process, the powder room body 3 can be full of to the anion, and after the powder room was electrified, the inside whole space electric field volume increase in spray room caused the voltage reduction of spray gun, and the electric current rose, and spray gun subassembly 2 can adjust the reduction of electric current always, and the voltage risees. The gun body heats up and may cause damage to the electrostatic high voltage line components. Meanwhile, as the same charges repel, the positive charges and the negative charges are the same pair and can be neutralized, the negative charges are firstly attracted by the positive charges of the workpieces, and the excessive negative charges can assimilate the neutralized workpieces. The surface of the sprayed workpiece is easy to have alternate layers of powder similar to sand dunes. The part with high accumulation has more powder, and the part with less accumulation has less powder. In the prior art, only partial house body can be effectively released only by conducting wire drainage in a general conducting wire drainage mode, the whole drainage is realized through the house body cage-shaped structure and the conducting paste, and the whole powder house body 3 can effectively release charges. In the preferred embodiment, the powder chamber body 3 is further provided with a maintenance ladder 36 at the outside thereof, the rotating motor of the air valve 33 is arranged near the maintenance ladder 36, so that the air valve 33 is conveniently maintained, and the top of the powder chamber body 3 is provided with a protective guard 38 for protecting the personal safety of maintenance personnel.

Referring to fig. 6, in a preferred embodiment, the spraying device further includes an electrical cabinet 6, important electrical components are integrated in the electrical cabinet, an air outlet is formed in the electrical cabinet 6, the rotary power device 332 is a rotary cylinder, the rotary cylinder is communicated with the electrical cabinet 6, waste gas of the rotary cylinder is discharged into the electrical cabinet 6 and then discharged from the air outlet of the electrical cabinet 6, so that air pressure in the electrical cabinet 6 is greater than external atmospheric pressure, external dust is not easy to enter the electrical cabinet 6, an effect of effectively protecting electrical components is achieved, and the service life of the spraying device is prolonged. The explosion-proof design of isolated formula of air current of regulator cubicle 6 realizes that regulator cubicle 6 and cable do not have the laying dust, solves recessive safety, reduces equipment failure rate by a wide margin.

In the preferred embodiment, the bending portions in the powder spraying chamber 30 are all chamfered, and the bending angle of the first sidewall 31 is greater than 120 °, and the bending angle of the second sidewall 32 is also greater than 120 °. Conventional straight line geometry room internal chamber surface forms the difficult clear powder of contained angle crack, the utility model discloses realize the butt joint of full streamline shape curved surface, no dead angle crack, the clearance more easily.

The utility model discloses a change the structure of powder room body and spray gun subassembly, make the work piece have two sections powder distances in powder room originally internally, the work piece is at this internal powder distance lengthening of powder room, and spraying efficiency is higher, because first spray gun group and second spray gun group are the contained angle setting, the contained angle between first lateral wall and the second lateral wall needn't too big can hold first spray gun group and second spray gun group, reduces updraft ventilator's convulsions angle, improves the convulsions effect, reduces the ease powder.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above embodiments only express the specific embodiments of the utility model, and the description thereof is more specific and detailed, but not so as to limit the scope of the patent of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a spray gun subassembly for to work piece spraying material powder, its characterized in that, includes first spray gun group, second spray gun group and sliding seat, first spray gun group is including a plurality of first spray guns, second spray gun group also includes a plurality of second spray guns, first spray gun group with the first end of second spray gun group is close to each other, and the second end keeps away from each other, first spray gun group with the injection direction of second spray gun group deviates from each other, first spray gun group with the second end of second spray gun group all slidable ground fixed connection in on the sliding seat.

2. The spray gun assembly of claim 1 wherein the included angle between said first spray gun group and said second spray gun group is 30-90 °.

3. The spray gun assembly of claim 1 wherein said first spray gun assembly includes a first fixture to which said first spray gun is secured; the second spray gun group comprises a second fixing piece, the second spray gun is fixed on the second fixing piece, and the first fixing piece and the second fixing piece are fixedly connected to the sliding seat in a sliding mode.

4. A spray gun assembly according to claim 3 in which the direction of spray from the first spray gun is at an acute angle to the direction in which the first retaining member extends inwardly of the spray chamber; and/or the presence of a gas in the gas,

the second spray gun and the second fixing piece form an acute angle, and the spraying direction of the second spray gun and the direction of the second fixing piece extending towards the inner side of the powder spraying cavity form an acute angle.

5. The spray gun assembly of claim 1 wherein said carriage has a first linear power unit and a second linear power unit, said first linear power unit being fixedly connected to said first spray gun assembly and said second linear power unit being fixedly connected to said second spray gun assembly, said first linear power unit and said second linear power unit driving said first spray gun assembly and said second spray gun assembly toward or away from each other.

6. The spray gun assembly of claim 1 wherein said first spray gun group and said second spray gun group are located on the same horizontal plane.

7. The spray gun assembly according to any one of claims 1-6, wherein the sum of the lengths of the first and second spray gun groups is from 1.5 meters to 4 meters.

8. A powder spraying apparatus comprising a powder chamber body provided with a powder spraying chamber and a spray gun assembly as claimed in any one of claims 1 to 7, the spray gun assembly being located within the powder spraying chamber and the first ends of the first and second groups of spray guns being located inside the powder chamber body.

9. The powder spraying device of claim 8, wherein the powder chamber body comprises a first side wall and a second side wall, the first end of the first side wall and the second end of the second side wall are close to each other, the second end of the first side wall and the second end of the second side wall are far away from each other, and the first side wall and the second side wall are formed with the powder spraying cavity; the maximum included angle between the first side wall and the second side wall is 50-70 degrees.

10. The powder spraying device as claimed in claim 8, wherein the powder cleaning assembly is arranged on the inner wall of the powder chamber body, and a plurality of air injection holes are arranged on the powder cleaning assembly and inject air to the inner wall of the powder chamber body; and/or the presence of a gas in the gas,