Opposite spraying type powder spraying room

Abstract

An opposite spraying type powder spraying room comprises a powder spraying main frame, a cleaning mechanism, a V-shaped powder spraying device and a workpiece conveying mechanism. The pair of middle inclined plates is mounted at the left and right positions of the frame base; the middle inclined plates extend obliquely, and the two middle inclined plates are close to the center of the two middle inclined plates; the side frames are respectively arranged on the left and right sides of the center frame; the surface of the outer inclined plate is close to the surface of the middle inclined plate and is separated from the middle inclined plate to form a powder spraying channel; the ends, close to each other, of the two middle inclined plates of the powder spraying channel are each provided with a channel hollowed-out opening. Powder spraying guns are respectively mounted on the middle inclined plate and the outer inclined plate; the output end of the powder spraying gun faces the powder spraying channel and is used for outputting powder to the powder spraying channel; the conveying end of the workpiece conveying mechanism is used for conveying workpieces to pass through the two powder spraying channels and the channel hollowed-out openings of the two powder spraying channels. The powder spraying gun is used for outputting powder to the workpieces passing through the powder spraying channel. According to the scheme, the problem of low efficiency caused by long-time waiting for switching among powder spraying, conveying and steering of the opposite spraying type powder spraying room is solved.

Description

Technical Field

[0001] The invention relates to the field of powder spraying devices, in particular to a counter-spraying powder spraying room. Background Art

[0002] Powder spraying is the process of spraying powder coating onto the surface of a workpiece using a powder spraying device. Under the action of static electricity, the powder will be evenly adsorbed on the surface of the workpiece to form a powdery coating. However, the spraying angle of existing powder spraying is limited. For example, single-sided spraying can easily cause the electrostatic field to be concentrated on the side near the gun, and the electric field in the workpiece area away from the spray gun is weakened. After the powder is charged, it cannot be effectively adsorbed to the entire surface, resulting in poor adsorption effect after the powder is output. Even if double-sided spraying is used, the angle between the powder spray guns on both sides and the workpiece is too limited, and the workpiece still has the problem of poor powder coating effect. Especially for workpieces with complex structures, its dead corners, grooves and other areas are difficult to adsorb powder due to the electrostatic shielding effect. The existing spraying technology cannot cover multiple angles, and multiple sprayings are required, resulting in increased powder consumption. Summary of the Invention

[0003] The present invention aims to provide a double-spray powder spraying booth, wherein a V-shaped powder spraying device forms powder spraying channels on the left and right sides of the outer inclined plate on the center frame, and powder spraying guns are installed on the middle and outer inclined plates. The V-shaped powder spraying device has four groups of powder spraying guns. A workpiece conveying mechanism conveys the workpiece between the two powder spraying channels. The four groups of powder spraying guns can perform multi-angle powder spraying during the workpiece conveyance, and the powder spraying, conveyance and steering of the workpiece can be seamlessly connected.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A double-spray powder spraying room, comprising: a powder spraying main frame, a cleaning mechanism, a V-shaped powder spraying device and a workpiece conveying mechanism;

[0006] A powder spraying room is provided inside the powder spraying main frame; a cleaning mechanism is provided in the powder spraying room for cleaning the powder spraying room; a V-shaped powder spraying device is provided in the powder spraying room;

[0007] The V-shaped powder spraying device includes: a center frame, a side frame and a powder spraying gun; the center frame is provided with a frame base and a middle inclined plate, a pair of middle inclined plates are installed at the left and right positions of the frame base; the middle inclined plates extend obliquely, and the two middle inclined plates approach each other toward the center;

[0008] The side frames are respectively arranged on the left and right sides of the center frame, and the side frames are provided with outer inclined plates; the surface of the outer inclined plates is close to the surface of the middle inclined plates, and the two are separated to form a powder spraying channel; the powder spraying channel is provided with a channel hollow opening at the end where the two middle inclined plates are close to each other;

[0009] The middle inclined plate and the outer inclined plate are respectively equipped with powder spray guns; the output end of the powder spray gun faces the powder spray channel and is used to output powder to the powder spray channel;

[0010] The conveying end of the workpiece conveying mechanism is used to convey the workpiece to pass through the two powder spraying channels and the channel hollow openings; the powder spraying gun is used to output powder to the workpiece passing through the powder spraying channels.

[0011] Optimally, powder outlet holes are respectively provided on the facing surfaces of the middle inclined plate and the outer inclined plate; part of the powder spraying gun is located outside the powder spraying channel, the output end of the powder spraying gun is installed at the powder outlet hole, and the powder spraying channel exposes the output end of the powder spraying gun at the powder outlet hole; in the powder spraying channel, the middle inclined plate and the outer inclined plate are parallel on the facing surfaces, and in the powder spraying channel, the powder outlet holes of the middle inclined plate and the powder outlet holes of the outer inclined plate are respectively coaxially aligned.

[0012] Optimally, the V-shaped powder spraying device also includes: a powder spraying lifting mechanism; the powder spraying lifting mechanism includes: a powder spraying synchronization frame and a powder spraying moving driver; the center frame and the side frame are installed on the powder spraying synchronization frame; the output end of the powder spraying moving driver is connected to the powder spraying synchronization frame, which is used to drive the powder spraying synchronization frame to move, and drive the powder spraying channel and the powder spraying gun to move in the powder spraying chamber.

[0013] Optimally, the inner diameter of the powder spraying chamber decreases from front to back, a frame air inlet is provided in the front of the powder spraying chamber, and a frame air outlet is provided at the rear of the powder spraying chamber; the cleaning mechanism includes: an exhaust cylinder and an exhaust device; the exhaust cylinder is provided with an exhaust inner cavity along the height extension direction; the side of the exhaust cylinder is provided with multiple sections of cylinder exhaust ports from low to high, the exhaust cylinder is installed on the powder spraying main frame, and multiple cylinder exhaust ports are connected with the frame air outlet, and the cleaning position of some cleaning mechanisms is horizontally aligned with the cylinder exhaust ports; multiple cylinder exhaust ports are arranged in a straight line in sequence, and the cylinder exhaust ports are the input end of the exhaust cylinder; a cylinder air outlet is provided on the side of the exhaust cylinder, and the cylinder air outlet is the output end of the exhaust cylinder; the cylinder exhaust port, the exhaust inner cavity and the cylinder air outlet are connected, and the input end of the exhaust device is connected to the cylinder air outlet.

[0014] It can be optimized that two upper and lower distributed cylinder exhaust vents are separated to form an air-proof side surface; a cylinder air outlet is provided on the side of the exhaust cylinder, and the cylinder air outlet is located outside the air-proof side surface, and the cylinder air outlet is horizontally aligned with the air-proof side surface; for some adjacent sections of cylinder exhaust vents, the inner diameter of the relatively lower cylinder exhaust vent is larger than the inner diameter of the relatively upper cylinder exhaust vent.

[0015] The cleaning mechanism can be optimized to include: a side cleaning assembly; the side cleaning assembly includes: a side baffle and a side cleaning nozzle; the side baffle is arranged in the powder spraying chamber in a manner that can be raised and lowered; the side baffle extends from the frame air inlet to the frame air outlet, and the side baffle extends parallel to the inner side wall of the powder spraying chamber, and the side baffle exposes a side panel gap at the frame air outlet, and the side panel gap is horizontally aligned with the frame air outlet; a plurality of side cleaning nozzles are connected to the side baffle in an angle-adjustable manner and are arranged along the length direction of the side baffle; the side cleaning nozzle is used to output gas to the powder spraying chamber.

[0016] Optimally, the side cleaning assembly also includes: a side connecting plate, a side panel lifting guide rail, a side panel lifting block and a side panel lifting drive mechanism; a pair of side baffles are distributed on the left and right sides of the air outlet, one end of the side connecting plate is connected to one of the side baffles, and the other end of the side connecting plate is connected to the other side baffle; the two side panel cleaning parts are separated by the side connecting plate, and a side panel gap is formed at the separation; the side panel lifting guide rail is vertically installed in the powder spraying chamber; the side panel lifting block is movably installed on the side panel lifting guide rail, the side panel lifting block is connected to one of the side baffles, and the side baffle is lifted and lowered along the side panel lifting guide rail; the side panel lifting drive mechanism includes: a side panel connecting seat, a side panel synchronization rod and a side lifting driver; the side baffles at the left and right positions are respectively equipped with side panel connecting seats; the side panel synchronization rod connects the side panel connecting seats at the left and right positions into one; the output end of the side lifting driver is connected to the side panel synchronization rod or the side panel connecting seat, used to drive the side panel connecting seat to rise and fall, and drive the side baffle to rise and fall along the side panel lifting guide rail.

[0017] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0018] This solution provides a double-spray powder spraying booth, whose V-shaped powder spraying device forms powder spraying channels on the left and right positions of the outer inclined plate on the center frame, and powder spraying guns are installed on the middle inclined plate and the outer inclined plate. The V-shaped powder spraying device has four groups of powder spraying guns. The workpiece conveying mechanism conveys the workpiece between the two powder spraying channels. The four groups of powder spraying guns can perform multi-angle powder spraying during the workpiece conveying. The powder spraying, conveying and steering of the workpiece can be seamlessly connected, solving the problem of low efficiency caused by long waiting time when switching between powder spraying, conveying and steering in the double-spray powder spraying booth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the top view of one embodiment of the spray powder spraying room;

[0020] Figure 2 This is a schematic diagram of the top view of one embodiment of a V-shaped powder spraying device;

[0021] Figure 3 This is a schematic diagram of the top view of one embodiment of the powder spraying channel;

[0022] Figure 4 This is a schematic diagram of the main structure of one embodiment of the exhaust tube;

[0023] Figure 5 It is a side view of the structure of one embodiment of the exhaust tube;

[0024] Figure 6 This is a schematic diagram of the top view of one embodiment of the exhaust tube;

[0025] Figure 7is a schematic top view of one embodiment of a side cleaning assembly;

[0026] Figure 8 yes Figure 7 A partial enlarged view of C1 in the middle;

[0027] Figure 9 This is a schematic diagram of the top view of one embodiment of the side baffle;

[0028] Figure 10 It is a side view of the structure of one embodiment of the powder spraying main frame at the bottom plate cleaning mechanism;

[0029] Figure 11 This is a schematic top view of the structure of one embodiment of the powder spraying main frame at the bottom plate cleaning mechanism;

[0030] Figure 12 yes Figure 11 A partial enlarged view of D1 in the middle;

[0031] Figure 13 It is a side view schematic diagram of one embodiment of the bottom plate cleaning mechanism;

[0032] Figure 14 This is a schematic side view of the structure of one embodiment of the powder spraying main frame at the top cleaning assembly;

[0033] Figure 15 is a schematic side view of one embodiment of a top cleaning assembly;

[0034] Figure 16 It is a schematic top view of the structure of one embodiment of the powder spraying main frame at the top cleaning component. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "inner end", "outer end", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish the described features, without distinction of order or importance. In the description of the present invention, unless otherwise specified, "multiple" means more than two.

[0037] like Figure 1-16 , a double-spray powder spraying room, comprising: a powder spraying main frame 1, a cleaning mechanism, a V-shaped powder spraying device 5 and a workpiece conveying mechanism 6;

[0038] A powder spraying chamber 11 is provided on the inner side of the powder spraying main frame 1; a cleaning mechanism is provided in the powder spraying chamber 11 for cleaning the powder spraying chamber 11; a V-shaped powder spraying device 5 is provided in the powder spraying chamber 11;

[0039] V-shaped powder spraying device 5, including: a center frame 51, a side frame 52 and a powder spraying gun 53;

[0040] The center frame 51 includes a frame base 511 and a middle oblique plate 512 . A pair of middle oblique plates 512 are installed at left and right positions of the frame base 511 . The middle oblique plates 512 extend obliquely, and the two middle oblique plates 512 approach each other toward their center.

[0041] The side frames 52 are respectively provided on the left and right sides of the center frame 51. The side frames 52 are provided with outer inclined plates 521. The surface of the outer inclined plates 521 is close to the surface of the middle inclined plates 512. The two are separated to form a powder spraying channel 50. The powder spraying channel 50 is provided with a channel hollow opening 501 at the end where the two middle inclined plates 512 are close to each other.

[0042] The middle inclined plate 512 and the outer inclined plate 521 are respectively installed with a powder spray gun 53; the output end of the powder spray gun 53 faces the powder spray channel 50, and is used to output powder to the powder spray channel 50;

[0043] The conveying end of the workpiece conveying mechanism 6 is used to convey the workpiece to pass through the two powder spraying channels 50 and the channel hollow openings 501 ; the powder spraying gun 53 is used to output powder to the workpiece passing through the powder spraying channels 50 .

[0044] The present solution provides a double-spray powder spraying room, in which a V-shaped powder spraying device 5 forms powder spraying channels 50 on the left and right positions of the outer inclined plate 521 on the center frame 51, and powder spraying guns 53 are installed on the middle inclined plate 512 and the outer inclined plate 521. The V-shaped powder spraying device 5 has four groups of powder spraying guns 53. The workpiece conveying mechanism 6 conveys the workpiece between the two powder spraying channels 50. The four groups of powder spraying guns 53 can perform multi-angle powder spraying during the workpiece conveying. The powder spraying, conveying and turning of the workpiece can be seamlessly connected, solving the problem of low efficiency caused by the long waiting time required to switch between powder spraying, conveying and turning in the double-spray powder spraying room.

[0045] Specifically, a powder spraying chamber 11 is provided on the inner side of the powder spraying main frame 1 as the main powder spraying area; a cleaning mechanism is provided in the powder spraying chamber 11 for cleaning the interior of the powder spraying chamber 11 to prevent residual impurities from affecting subsequent powder spraying; in the V-shaped powder spraying device 5, middle oblique plates 512 are provided on both sides of the center frame 51, and the middle oblique plates 512 are fixed to the frame base 511; and the space between the two middle oblique plates 512 is inclined and extends toward the middle of the two, for example Figure 2The two middle oblique plates 512 gradually lean against each other in the direction away from the frame base 511; the side frames 52 are located on both sides of the center frame 51, and the side frames 52 are provided with outer oblique plates 521, one outer oblique plate 521 faces one middle oblique plate 512, and the outer oblique plates 521 are close to the middle oblique plates 512, and the space between the two forms a powder spraying channel 50; thus, based on the inclination angle of the middle oblique plate 512 on the center frame 51, the number of powder spraying channels 50 at the left and right positions is 2, and they are distributed in a V shape; the middle oblique plate 512 and the outer oblique plate 521 are respectively provided with powder spraying guns 53, that is, the left and right positions of the powder spraying channel 50 are provided with output ends of the powder spraying guns 53, which is equivalent to the V-shaped powder spraying device 5 having four groups of powder spraying guns 53; due to the angle of the middle oblique plate 512 forming the powder spraying channel 50 The powder spraying guns 53 on both sides are different, so the powder discharge angles of the powder spraying guns 53 on both sides are different. After the workpiece passes through one of the powder spraying channels 50, it can continue to be transported to the other powder spraying channel 50. The four groups of powder spraying guns 53 can spray powder to the workpiece at multiple angles. Especially when the powder spraying guns 53 on both sides of the powder spraying channel 50 are arranged relative to each other, the electrostatic field generated by the powder spraying guns 53 forms a superposition effect in the central area of the workpiece. The electric field strength in this area is significantly higher than that in the single-gun operation area. Under the drive of the strong electric field, the charged powder gathers more quickly and more densely toward the center, greatly improving the powder adsorption efficiency. In this way, when the powder spraying guns 53 are working, the powder with static electricity sprayed by the powder spraying guns 53 gathers in the middle, and the powder adsorption effect on the workpiece is better, the powder wrapping property of the workpiece is better, the powder loading rate is higher, and the powder consumption is reduced. The conveying end of the workpiece conveying mechanism 6 can be provided with a workpiece clamp, which has a clamping function and is used to clamp the workpiece. The conveying end of the workpiece conveying mechanism 6 drives the workpiece to be conveyed between the two powder spraying channels 50 through the workpiece clamp. Alternatively, the workpiece is directly placed at the conveying end of the workpiece conveying mechanism 6. The workpiece conveying mechanism 6 drives the workpiece to be conveyed between the two powder spraying channels 50 and pass through the channel hollow opening 501; the channel hollow opening 501 can hollow out the end of the powder spraying channel 50, and the channel hollow opening 501 is located at the position where the middle inclined plate 512 is leaning against. If the workpiece needs to be transferred from one of the powder spraying channels 50 to another powder spraying channel 50, it can pass through the channel hollow opening 501 of one of the powder spraying channels 50, turn a certain angle (for example, 180 degrees), and enter the other powder spraying channel 50 from the channel hollow opening 501 of the other powder spraying channel 50; in this way, the workpiece can seamlessly perform the powder spraying processing of four groups of powder spraying guns 53, and the opening of the channel hollow opening 501 can make the angle switching of the powder spraying faster and more convenient.

[0046] The workpiece conveying mechanism 6 is a well-known mechanism with a driving and conveying function, such as one or a combination of a conveyor belt device, a conveyor chain device, a mobile car, etc., as long as it can drive the workpiece or the workpiece fixture to move between the powder spraying channels 50; for example, in one embodiment, the workpiece conveying mechanism 6 is a conveyor belt device, and the conveyor belt synchronously connects multiple conveying wheels, and the conveying wheels are distributed at different positions inside and outside the powder spraying channel 50, guiding the conveyor belt to pass through the two powder spraying channels 50 and the hollow openings 501 of the channels, and the workpiece fixture is connected to the conveyor belt, and a motor is used to drive one of the conveying wheels to rotate, driving the conveyor The rotation of the conveyor belt drives the workpiece held by the workpiece fixture to move through the two powder spraying channels 50 and their hollow openings 501. In one embodiment, the workpiece conveying mechanism 6 is a conveyor chain device, the chain being meshed and connected with a plurality of gears, which are distributed at different positions inside and outside the powder spraying channels 50, guiding the chain to pass through the two powder spraying channels 50 and their hollow openings 501. The workpiece fixture is connected to the chain, and a motor is used to drive one of the gears to rotate, driving the chain to rotate, thereby driving the workpiece held by the workpiece fixture to move through the two powder spraying channels 50 and their hollow openings 501. The remaining known structures of the workpiece conveying mechanism 6 are not further described here.

[0047] Optimally, the facing surfaces of the middle inclined plate 512 and the outer inclined plate 521 are respectively provided with powder outlet holes 513; part of the powder spraying gun 53 is located outside the powder spraying channel 50, and the output end of the powder spraying gun 53 is installed at the powder outlet hole 513, and the powder spraying channel 50 exposes the output end of the powder spraying gun 53 at the powder outlet hole 513; in the powder spraying channel 50, the middle inclined plate 512 and the outer inclined plate 521 are parallel on the facing surfaces, and in the powder spraying channel 50, the powder outlet hole 513 of the middle inclined plate 512 and the powder outlet hole 513 of the outer inclined plate 521 are respectively coaxially aligned.

[0048] In this embodiment, some of the powder spray guns 53 are preferably integrally arranged on the side of the middle inclined plate 512 away from the powder spray channel 50, and on the side of the outer inclined plate 521 away from the powder spray channel 50; that is, the main body of the powder spray gun 53 is away from the powder spray channel 50, which can prevent the powder from adhering to the other powder spray gun 53 when the powder spray guns 53 are spraying powder in opposite directions, thereby effectively preventing the powder spray guns 53 from sticking to the powder spray guns 53 and protecting the powder spray guns 53; at the same time, within the same inner diameter of the powder spray channel 50, the powder spray guns 53 are moved away from the powder spray channel 50 to save the overall space of the powder spray channel 50. When the two middle inclined plates 512 and the outer inclined plates 521 are arranged in parallel, they serve as the side walls of the powder spray channel 50, and the side walls of the powder spray channel 50 are parallel, so that the powder outlets 513 of the two can be arranged in the same direction. Therefore, the output ends of the powder spray guns 53 with the powder outlets 513 on both sides of the powder spray channel 50 face in opposite directions, which can make the powder evenly adhere to the workpiece surface and further improve the powder adsorption efficiency. When the powder outlet hole 513 on one side of the powder spraying channel 50 is coaxially aligned with the powder outlet hole 513 on the other side, combined with the middle inclined plate 512 and the outer inclined plate 521 being parallel on opposite sides, the electrostatic field formed by the powder spraying gun 53 is evenly superimposed in the central area of the workpiece, forming a high-intensity electric field focusing area. Driven by the uniform electric field, the charged powder is more stably gathered to the middle of the workpiece, thereby improving the adsorption efficiency and avoiding the mutual cancellation or interference of the electric fields on both sides, ensuring that the powder moves in a directed manner to the surface of the workpiece under the action of the electric field force.

[0049] Optimally, the V-shaped powder spraying device 5 further includes: a powder spraying lifting mechanism 54;

[0050] The powder spraying lifting mechanism 54 includes: a powder spraying synchronous frame 541 and a powder spraying moving driver 542;

[0051] The center frame 51 and the side frame 52 are installed on the powder spraying synchronous frame 541; the output end of the powder spraying mobile driver 542 is connected to the powder spraying synchronous frame 541, which is used to drive the powder spraying synchronous frame 541 to move, driving the powder spraying channel 50 and the powder spraying gun 53 to move in the powder spraying chamber 11.

[0052] The powder spraying synchronous frame 541 is used to integrally fix the center frame 51 and the side frames 52 on both sides. The output end of the powder spraying moving driver 542 is connected to the powder spraying synchronous frame 541. The powder spraying moving driver 542 can drive the powder spraying synchronous frame 541 to move, thereby driving the center frame 51 and the side frames 52 of the powder spraying synchronous frame 541 to move, and then driving the powder spraying channel 50 and the powder spraying gun 53 to move, that is, the V-shaped powder spraying device 5 has a moving function; this embodiment can make the powder spraying channel 50 and its powder spraying gun 53 move back and forth at different positions of the workpiece; combined with the workpiece conveying mechanism 6 moving through the powder spraying channels 50 on both sides, the movement of the powder spraying channel 50 can be linked with the conveying end of the workpiece conveying mechanism 6, so that the V-shaped powder spraying device 5 has the characteristics of multi-angle powder spraying, and also has the advantages of fast loading, fast conversion of powder spraying angles and fast unloading.

[0053] The powder spraying moving driver 542 is a well-known mechanism for driving movement, such as a combination of an air cylinder, an oil cylinder, a motor and a screw rod, and one or more combinations of a robot.

[0054] Optimally, the inner diameter of the powder spraying chamber 11 decreases from the front to the back, and an air inlet 111 is provided in the front of the powder spraying chamber 11, and an air outlet 112 is provided in the back of the powder spraying chamber 11;

[0055] The cleaning mechanism includes: an exhaust cylinder 02 and an exhaust device 28;

[0056] The exhaust cylinder 02 is provided with an exhaust cavity 21 along the height extension direction; the side of the exhaust cylinder 02 is provided with multiple sections of cylinder exhaust ports 22 from low to high, and the exhaust cylinder 02 is installed on the powder spraying main frame 1, and multiple cylinder exhaust ports 22 are connected with the frame air outlet 112, and the cleaning position of some cleaning mechanisms is horizontally aligned with the cylinder exhaust ports 22; multiple cylinder exhaust ports 22 are arranged in a straight line in sequence, and the cylinder exhaust ports 22 are the input end of the exhaust cylinder 02; the side position of the exhaust cylinder 02 is provided with a cylinder air outlet 24, and the cylinder air outlet 24 is the output end of the exhaust cylinder 02; the cylinder exhaust ports 22, the exhaust cavity 21 and the cylinder air outlet 24 are connected, and the input end of the exhaust device 28 is connected to the cylinder air outlet 24.

[0057] During the lifting and spraying of the powder spray gun, the powder output by the powder spray gun tends to float at different heights in the powder spraying room. To this end, the exhaust port 22 of the exhaust cylinder 02 is multi-segmented, and the multi-segment exhaust ports 22 are arranged in a straight line. Each exhaust port 22 corresponds to a certain horizontal area of the powder spraying room. Therefore, the exhaust ports 22 are distributed from low to high, and can inhale powder from different height areas of the powder spraying room. The exhaust ports 22 are connected to the exhaust cavity 21, so the powder inhaled by the exhaust ports 22 can be discharged. To the exhaust cavity 21; the exhaust cylinder 02 is also provided with a cylinder air outlet 24, which is connected to the exhaust cavity 21. The cylinder air outlet 24 can be connected to a conventional exhaust device 28, and the gas in the cylinder air outlet 24 is extracted through the exhaust device 28, so that a negative pressure is formed in the exhaust cavity 21. Under the action of the negative pressure, the exhaust cavity 21 inhales the air of the powder spraying chamber through the multi-stage cylinder exhaust port 22, and the powder is transferred from the powder spraying chamber to the exhaust cavity 21 with the air, and then discharged through the cylinder air outlet 24.

[0058] It can be optimized that two upper and lower distributed cylinder air exhaust vents 22 are separated to form an air-proof side surface 23; a cylinder air outlet 24 is provided on the side of the exhaust cylinder 02, and the cylinder air outlet 24 is located outside the air-proof side surface 23, and the cylinder air outlet 24 is horizontally aligned with the air-proof side surface 23; for some adjacent sections of cylinder air exhaust vents 22, the inner diameter of the relatively lower cylinder air exhaust vent 22 is larger than the inner diameter of the relatively upper cylinder air exhaust vent 22.

[0059] This solution cleverly provides an air-avoiding side surface 23 between two of the upper and lower cylinder exhaust ports 22, that is, the two cylinder exhaust ports 22 are separated by the air-avoiding side surface 23, and cylinder air outlets 24 are provided at the horizontal alignment of the air-avoiding side surfaces 23, but the cylinder air outlets 24 are horizontally away from the air-avoiding side surfaces 23, that is, the cylinder air outlets 24 are away from the straight line of arrangement of the cylinder exhaust ports 22, and powder can be sucked into the exhaust cavity 21 at the cylinder exhaust ports 22 above or below the air-avoiding side surfaces 23; thus, a certain cylinder exhaust port is prevented from being sucked into the exhaust cavity 21. 22 and the cylinder air outlet 24 are connected in a horizontal straight line, thereby preventing the powder from being discharged directly after passing through the cylinder exhaust port 22, the exhaust cavity 21 and the cylinder air outlet 24 horizontally, thereby avoiding the exhaust cylinder 02 needing a larger air volume to inhale powder at other positions, and the air volume of the exhaust cylinder 02 at the input end can be dispersed to the cylinder exhaust port 22 above and below the air-avoiding side 23; thus, the air-avoiding design of the cylinder air outlet 24 can prevent the local air volume from being too large, making it difficult for the cylinder exhaust port 22 far away from the cylinder air outlet 24 to inhale powder.

[0060] The cylinder air outlet 24 is located between the middle and top of the exhaust cylinder 02. The cylinder air outlet 24 can be located anywhere between the middle and top of the exhaust cylinder 02. Because the cylinder air outlet 24 is located above the exhaust cylinder 02, when the cylinder air outlet 24 is connected to the exhaust device 28, the exhaust device 28 creates a negative pressure within the exhaust cavity 21. Because the cylinder air outlet 24 is closer to the top exhaust port 25, powder at the top of the powder spraying chamber can quickly enter the top exhaust port 25 and then be discharged through the cylinder air outlet 24, further accelerating the discharge efficiency of the powder at the top of the powder spraying chamber. Furthermore, the distance from the powder between the middle and top of the exhaust cavity 21 to the cylinder air outlet 24 is shorter, making powder located between the middle and top of the exhaust cavity 21 easier to discharge.

[0061] The side of the exhaust cylinder 02 is provided with multiple sections of exhaust ports 22 from low to high, and for the two adjacent sections of exhaust ports 22 at the upper and lower positions, the inner diameter of the exhaust port 22 at the lower position is larger than the inner diameter of the exhaust port 22 at the upper position, so that the multiple sections of exhaust ports 22 are arranged in the height direction from the small inner diameter to the large inner diameter, with the exhaust port 22 having a larger inner diameter at the lower part of the exhaust cylinder 02 and the exhaust port 22 having a larger inner diameter at the upper part of the exhaust cylinder 02; since the powder generally falls into the powder spraying chamber by its own weight, the powder floating in the powder spraying chamber enters the exhaust cavity 2 1 is easier to fall to the bottom of the powder spraying chamber, so the inner diameter of the barrel exhaust port 22 at the relatively lower part is designed to be larger, so that more powder can be sucked in from the lower part of the exhaust cavity 21 and less powder can be sucked in from the upper part of the exhaust cavity 21. The air volume can be reduced under the premise of sucking in the same amount of powder, so that the suction force of the exhaust can be distributed at different height positions of the exhaust cavity 21. The lower the barrel exhaust port 22 is, the more powder can be sucked in. This solves the problem that the existing powder spraying chamber needs a higher power exhaust device 28 to recover powder, which leads to a large exhaust volume and higher power consumption.

[0062] The inner diameter of the cylinder exhaust port 22 is 10 to 90 mm. The inner diameter of the top exhaust port 25 is 50 to 70 mm. This embodiment further limits the inner diameter of the cylinder exhaust port 22 to 10 to 90 mm. For example, a group of adjacent cylinder exhaust ports 22 arranged from bottom to top have inner diameters of 80 mm, 30 mm, and 20 mm, respectively. The inner diameter of the cylinder exhaust port 22 arranged at the bottom is 4 times the inner diameter of the cylinder exhaust port 22 arranged above. Therefore, the cylinder exhaust port 22 at the bottom can inhale 4 times the amount of powder, thereby inhaling more powder at the bottom. The inner diameter of the top exhaust port 25 is 50 to 70 mm, which can be selected as 50 mm, 55 mm, 60 mm, 65 mm, etc. as needed; since the top exhaust port 25 is located at the top of the exhaust cylinder 02, its inner diameter is larger than the inner diameter of the multiple cylinder exhaust ports 22 relative to the bottom, and the powder at the top of the powder spraying chamber can be concentratedly extracted to avoid the problem of powder accumulation at the top and making it difficult to clean.

[0063] The exhaust cylinder 02 is provided with a powder suction port 26 at the input end of both the top exhaust port 25 and the barrel exhaust port 22. The inner diameter of the powder suction port 26 gradually narrows from the outside to the inside. The output end of the powder suction port 26 is connected to the top exhaust port 25 or the barrel exhaust port 22. The input end of the powder suction port 26 can be located at different heights of the powder spraying chamber 11. The inner diameter of the powder suction port 26 gradually narrows from the outside to the inside. The powder suction port 26 can have a larger inner diameter at the outermost end to more conveniently suck in powder. The powder can be introduced into the exhaust cavity 21 along the inclined surface formed inside.

[0064] The exhaust cavity 21 is provided with a cylindrical oblique inner wall 27 at the top, and the cylindrical oblique inner wall 27 is horizontally oriented to the top cleaning assembly 8. The cylindrical oblique inner wall 27 extends obliquely from the top of the exhaust cavity 21 toward the middle, and the cylindrical oblique inner wall 27 transitions from the top wall of the exhaust cavity 21 to the side wall of the exhaust cavity 21. The exhaust cavity 21 can be provided with a cylindrical oblique inner wall 27 at the top and bottom walls as needed, such as Figure 5 The inclined inner wall 27 of the cylinder is inclined in the direction of extending from the end of the exhaust cavity 21 toward the middle, and the inclined inner wall 27 transitions from the bottom wall or top wall of the exhaust cavity 21 to the side wall of the inclined inner wall 27. Therefore, the inclined inner wall 27 can shorten the horizontal distance between the top and bottom walls of the exhaust cavity 21, making the wind direction smoother and more convenient for guiding the powder to the cylinder air outlet 24 through the inclined inner wall 27. At the same time, the inclined inner wall 27 replaces the corner position between the bottom wall and the side wall of the exhaust cavity 21, which can avoid the powder from being hidden in the corner position of the exhaust cavity 21 when a large amount of powder in the top cleaning component 8 is inhaled.

[0065] Optimally, the cleaning mechanism includes: a side cleaning component 3;

[0066] The side cleaning assembly 3 includes: a side baffle 31 and a side cleaning nozzle 32;

[0067] The side baffle 31 is arranged in the powder spraying chamber 11 in a manner that can be raised and lowered; the side baffle 31 extends from the frame air inlet 111 to the frame air outlet 112, and the side baffle 31 extends parallel to the inner side wall of the powder spraying chamber 11, and the side baffle 31 exposes a side panel notch 310 at the frame air outlet 112, and the side panel notch 310 is horizontally aligned with the frame air outlet 112; multiple side cleaning nozzles 32 are connected to the side baffle 31 in an angle-adjustable manner and are arranged along the length direction of the side baffle 31; the side cleaning nozzles 32 are used to output gas to the powder spraying chamber 11.

[0068] The powder spraying chamber 11 is used for spraying powder, the workpiece is located in the powder spraying chamber 11, and a conventional powder spraying gun is used to spray the workpiece; the side baffle 31 can be raised and lowered to the powder spraying chamber 11, and the side baffle 31 extends parallel to the inner side wall of the powder spraying chamber 11, and the side baffle 31 extends from the frame air inlet 111 to the frame air outlet 112, so that the side cleaning nozzles 32 of the side baffle 31 are arranged in sequence from the frame air inlet 111 to the frame air outlet 112; in this way, the output ends of the side cleaning nozzles 32 are arranged along the contour of the powder spraying chamber 11, and the angles of the side cleaning nozzles 32 are rotatable and adjustable, and the side cleaning nozzles 32 can be adjusted to face the inner wall of the powder spraying chamber 11, and the side cleaning nozzles 32 can be adjusted to face away from the inner wall of the powder spraying chamber 11 and toward the powder spraying gun; start When the side cleaning nozzle 32 is moved, the side cleaning nozzle 32 can output high-pressure gas to the powder spraying chamber 11. The high-pressure gas is, for example, air, nitrogen, etc.; when the high-pressure gas is output to the inner wall of the powder spraying chamber 11, it takes away the dust and other colored powders on the inner wall of the powder spraying chamber 11 and in the air; in particular, the inner diameter of the powder spraying chamber 11 of the present application decreases from front to back, the inner diameter of the frame air inlet 111 is larger than the inner diameter of the frame air outlet 112, and the side baffle of this scheme exposes the side panel notch 310 at the frame air outlet 112, and the side panel notch 310 is horizontally aligned with the frame air outlet 112. The blown dust and powder can be guided to the outside of the frame air outlet 112 through the side panel notch 310 under the action of the inclined surface of the powder spraying chamber 11, and the internal contour of the powder spraying chamber 11 makes it easier to discharge impurities. During spraying, the powder gun may need to be replaced with other powders. To this end, the present application mobilizes the side cleaning assembly 3, and the side baffle 31 is driven to rise and fall, driving the side cleaning nozzle 32 of the side baffle 31 to rise and fall, starting the side cleaning nozzle 32, and the side cleaning nozzle 32 outputs gas to the inner wall of the powder spraying chamber 11. During this process, the angle of the side cleaning nozzle 32 can be adjusted manually or automatically as needed. The side cleaning nozzle 32 is adjusted to face toward and away from the inner wall of the powder spraying chamber 11 in turn. The side cleaning nozzle 32 cleans the mechanism inside the powder spraying chamber 11 (including the inner wall and the powder spray gun), blowing impurities in the powder spray gun and / or mid-air toward the rack air outlet 112. In this way, the present solution can automatically clean the powder spraying room during the processing process and before and after color change, which can improve color change efficiency and solve the problem of low color change efficiency caused by excessive cleaning time before and after color change in existing powder spraying rooms.

[0069] Optimally, the side cleaning assembly 3 further includes: a side connecting plate 34, a side plate lifting guide rail 35, a side plate lifting block 36 and a side plate lifting drive mechanism 37;

[0070] A pair of side baffles 31 are located on the left and right sides of the air outlet 112. One end of a side connecting plate 34 is connected to one of the side baffles 31, and the other end of the side connecting plate 34 is connected to the other side baffle 31. The two side plate cleaning portions 312 are separated by the side connecting plate 34, and a side plate notch 310 is formed at the separation point.

[0071] The side panel lifting guide rail 35 is vertically mounted on the powder spraying chamber 11; the side panel lifting block 36 is movably mounted on the side panel lifting guide rail 35, and the side panel lifting block 36 is connected to one of the side baffles 31, and the side baffle 31 is lifted and lowered along the side panel lifting guide rail 35;

[0072] The side panel lifting drive mechanism 37 includes: a side panel connecting seat 371, a side panel synchronization rod 372 and a side lifting driver 373;

[0073] The side panels 31 at the left and right positions are respectively installed with side panel connecting seats 371; the side panel synchronization rod 372 connects the side panel connecting seats 371 at the left and right positions into one; the output end of the side lifting driver 373 is connected to the side panel synchronization rod 372 or the side panel connecting seat 371, which is used to drive the side panel connecting seat 371 to rise and fall, and drive the side panel 31 to rise and fall along the side panel lifting guide rail 35.

[0074] The side connecting plates 34 connect the side baffles 31 on both sides, and the side baffles 31 can be installed separately; compared with the embodiment in which the powder spraying chamber 11 has only one integral side baffle 31, the side connecting plates 34 can facilitate the processing of the side baffles 31, and it is only necessary to use the side connecting plates 34 to connect the two side baffles 31, which reduces the processing difficulty and installation difficulty of the side baffles 31 and facilitates daily maintenance; at the same time, the side connecting plates 34 are located at the connection position of the two side baffles 31, and the side connecting plates 34 can separate the two side connecting plates 34, thereby forming a side panel gap 310, and the side panel gap 310 is horizontally aligned with the frame air outlet 112, and a side panel gap 310 for guiding air can be formed between the side baffles 31. The side panel lifting guide rail 35 is vertically installed in the powder spraying chamber 11, and the side panel lifting block 36 is lifted and lowered along the length direction of the side panel lifting guide rail 35, which can provide guidance for the lifting and lowering movement of the side baffle 31, thereby ensuring the lifting and lowering smoothness of the side baffle 31, avoiding the side baffle 31 from deviating from the preset position during lifting, and improving the stability of the side cleaning nozzle 32 during lifting and cleaning. The side panel 371 is connected to the upper and lower parts of the frame 371, and the side panel 371 of the left and right side panel 31 is connected by the side panel synchronization rod 372. During the processing of the powder spraying room and the color changing stage, the side lifting driver 373 can be called, and the side lifting driver 373 drives the side panel connecting seat 371 to move. The side panel synchronization rod 372 connects the two side panel connecting seats 371 together, so that a single side lifting driver 373 can drive the left and right side panel 31 to move up and down. Since the left and right side panel 31 are respectively connected to the side panel lifting guide rails 35 through the side panel lifting blocks 36, the side panel 31 can be lifted and lowered along the length direction of the side panel lifting guide rails 35, driving the side cleaning nozzle 32 of the side panel 31 to be lifted and lowered in the powder spraying room 11 and blowing air into the internal environment of the powder spraying room 11, thereby removing impurities from the powder spraying room before and after ventilation.

[0075] The side panel lifting drive mechanism 37 is a well-known mechanism with a driving and lifting function, such as a pneumatic cylinder, an oil cylinder, a combination of a motor and a screw rod, a combination of a gear and a rack, a combination of a gear and a toothed chain, a manipulator, a conveyor belt structure, etc., as long as it can drive the side panel connecting seat 371 to rise and fall.

[0076] The side cleaning assembly 3 also includes: a side connecting pipe 33; the side connecting pipe 33 is installed on the side baffle 31, and multiple side cleaning nozzles 32 are installed at the output end of the same side connecting pipe 33. In this solution, the side connecting pipe 33 is preferably installed on the side baffle 31. Different positions of the side baffle 31 can share a side connecting pipe 33, or the side baffle 31 can be provided with multiple side connecting pipes 33 connected in sequence at different positions; multiple side cleaning nozzles 32 can be connected to one side connecting pipe 33; when the side connecting pipe 33 is connected to the gas source, the gas source outputs gas to the side connecting pipe 33, and the side connecting pipe 33 then outputs gas to the side cleaning nozzles 32 at different positions, which can accommodate a larger number of side cleaning nozzles 32 on the side baffle 31 without the need to set up multiple gas paths, thereby simplifying the arrangement of the side baffle 31 in the gas path, thereby avoiding the complicated gas path structure on the side baffle 31 that hinders lifting.

[0077] The side baffle 31 is provided with a side panel connecting portion 311 and a side panel cleaning portion 312; the side panel connecting portion 311 is located outside the powder spraying chamber 11 and on both sides of the frame air inlet 111; the side panel cleaning portion 312 is located in the powder spraying chamber 11; the same side connecting pipe 33 is respectively installed on the side panel connecting portion 311 and the side panel cleaning portion 312, the input end of the side connecting pipe 33 is located at the side panel connecting portion 311, and the output end of the side connecting pipe 33 is located at the side panel cleaning portion 312. The side baffle 31 can be divided into different positions according to its function: a side panel connecting portion 311 and a side panel cleaning portion 312; the side panel cleaning portion 312 is mainly used to install the side connecting pipe 33, which is the main cleaning area; the side panel connecting portion 311 can be used to connect to the air source externally, and can also be used to connect a driver outside the powder spraying chamber 11, so that the side baffle 31 can be raised and lowered as a whole; the side connecting pipe 33 is respectively installed at the side panel connecting portion 311 and the side panel cleaning portion 312, and the side connecting pipe 33 can input the air source at the side panel connecting portion 311, and the gas is transmitted along the length direction of the side connecting pipe 33, and is output through the side cleaning nozzle 32 at the output end at different positions, so that the gas is output to the powder spraying chamber 11 to clean the powder spraying chamber 11, which can avoid arranging too many air paths in the powder spraying chamber 11 and avoiding the air paths affecting the raising and lowering of the side baffle 31.

[0078] The side cleaning nozzle 32 is rotatably mounted on the output end of the side connecting pipe 33. This solution allows the side cleaning nozzle 32 to be oriented at an adjustable angle within the side connecting pipe 33, depending on the desired cleaning effect. The side cleaning nozzle 32 can be oriented toward or away from the inner wall of the powder spraying chamber 11 to clean the powder spray gun.

[0079] Optimally, the cleaning mechanism further comprises: a bottom plate cleaning mechanism 4;

[0080] The bottom plate cleaning mechanism 4 is installed at the bottom of the powder spraying room 11;

[0081] The bottom plate cleaning mechanism 4 includes: a bottom inclined plate 41 and a bottom plate horizontal nozzle 42;

[0082] The bottom inclined plate 41 is installed at an angle at the bottom of the powder spraying chamber 11, with the lower end of the bottom inclined plate 41 in the inclined direction close to the frame air outlet 112, and the upper end of the bottom inclined plate 41 in the inclined direction close to the frame air inlet 111; the bottom plate horizontal nozzle 42 is installed on the bottom inclined plate 41, and the bottom plate horizontal nozzle 42 is used to output gas toward the frame air outlet 112.

[0083] During the spraying process, the powder will fall to the bottom of the powder spraying chamber 11 by its own gravity; for this purpose, the present invention provides an inclined bottom inclined plate 41 at the bottom of the powder spraying chamber 11, and the bottom inclined plate 41 is inclined and extended, which can guide the airflow in the powder spraying chamber 11 to flow along the inclined extension direction of the bottom inclined plate 41; especially in the inclined extension direction of the bottom inclined plate 41, its two ends have a height difference, and the bottom inclined plate 41 is inclined and extended to form an inclined upper end and an inclined lower end; the inclined upper end of the bottom inclined plate 41 is close to the frame air inlet 111, and the inclined lower end of the bottom inclined plate 41 is close to the frame air outlet 112, and the internal contour of the powder spraying chamber 11 is that the inner diameter of the powder spraying chamber 11 decreases from front to back, so the gas flow rate at the frame air outlet 112 will be greater than that at the frame air inlet 111; when the bottom plate horizontal nozzle 42 is started, the bottom plate horizontal nozzle 42 outputs gas in the direction of the frame air outlet 112 The gas in the powder spraying chamber 11 is discharged through the frame air outlet 112, thereby forming a negative pressure in the powder spraying chamber 11; and the frame air inlet 111 can inhale the external gas through the negative pressure of the powder spraying chamber 11, so that more gas is sucked into the powder spraying chamber 11 and then discharged through the frame air outlet 112; in this way, the external gas inhaled by the frame air inlet 111 and the gas sprayed by the horizontal nozzle 42 of the bottom plate are guided by the bottom inclined plate 41 to be discharged at the frame air outlet 112, and the gas flows obliquely from top to bottom, which can form an inclined wind curtain at the bottom of the powder spraying chamber 11, and the powder falls in front of the bottom plate. The inclined wind curtain will cause the powder to be discharged from the frame air outlet 112, ensuring the cleanliness of the powder spraying chamber 11 at the bottom, and solving the problem that powder accumulates at the bottom of the existing powder spraying room after long-term use and is difficult to clean; at the same time, the present application can uniformly receive the falling powder at the frame air outlet 112 to avoid powder waste.

[0084] Multiple outer edges of the bottom inclined plate 41 are close to the inner wall of the powder spraying chamber 11 , and some bottom plate horizontal nozzles 42 are distributed on the outer edge of the bottom inclined plate 41 , and the output ends of the multiple bottom plate horizontal nozzles 42 face the rear of the powder spraying chamber 11 . The multiple outer edges of the bottom inclined plate 41 in this embodiment are close to the inner wall of the powder spraying chamber 11, which can minimize the gap between the bottom inclined plate 41 and the inner wall of the powder spraying chamber 11, and the probability of powder falling into the gap between the two is minimized; at the same time, the bottom plate horizontal nozzles 42 of this embodiment are distributed on the outer edge of the bottom inclined plate 41, and the multiple bottom plate horizontal nozzles 42 can be unified to output to the horizontal center line direction toward the bottom, and the multiple bottom plate horizontal nozzles 42 blow air to the rear position together. Combined with the internal contour of the powder spraying chamber 11, the gas can be output from the frame air outlet 112. The bottom plate horizontal nozzles 42 only need to be roughly toward the rear of the powder spraying chamber 11 and output gas to the frame air outlet 112 as a whole. The minimization of the gap can eliminate the need to set bottom plate horizontal nozzles 42 at multiple angles on the bottom inclined plate 41 to adjust the wind direction, thereby simplifying the installation difficulty of the bottom plate horizontal nozzles 42.

[0085] The bottom plate horizontal nozzle 42 is installed on the bottom inclined plate 41 in an angle-adjustable manner; part of the bottom plate horizontal nozzle 42 faces the extension direction of the outer edge of the bottom inclined plate 41. In this solution, part of the bottom plate horizontal nozzle 42 faces the rear of the powder spraying room 11, such as Figure 12 Some of the bottom plate horizontal nozzles 42 are directed toward the extension direction of the outer edge of the bottom inclined plate 41. Since there is still a gap between the bottom inclined plate 41 and the inner side wall of the powder spraying chamber 11, a small part of the bottom plate horizontal nozzles 42 can be used to blow air toward the extension direction of the outer edge of the bottom inclined plate 41, so that an inclined air curtain is also formed on the gap surface to prevent powder from accumulating in the gap.

[0086] In some embodiments, each bottom-plate horizontal sprinkler head 42 can be independently connected to a different air source. In some embodiments, the bottom-plate horizontal sprinkler heads 42 are connected to the interior of the bottom-sloped plate 41, which in turn is connected to the air source. In a preferred embodiment, an edge air duct 43 is provided along a portion of the outer edge of the bottom-sloped plate 41. Multiple bottom-plate horizontal sprinkler heads 42 are mounted on the same edge air duct 43, with the input end of the bottom-plate horizontal sprinkler heads 42 connected to the output end of the edge air duct 43. The present solution preferably provides edge air ducts 43 on multiple outer edges of the bottom inclined plate 41. Multiple outer edges may share one edge air duct 43, or one outer edge may correspond to one edge air duct 43; multiple bottom plate horizontal nozzles 42 may be connected to one edge air duct 43; when the air source is connected to the edge air duct 43, the air source outputs the gas to the edge air duct 43, and the edge air duct 43 then outputs the gas to the bottom plate horizontal nozzles 42 at different positions respectively. This structure can be used to accommodate more bottom plate horizontal nozzles 42, so as to simplify the number of air paths in the powder spraying chamber 11 and make the structure simpler.

[0087] The bottom plate cleaning mechanism 4 also includes: a bottom plate vertical nozzle 44; the bottom plate vertical nozzle 44 is installed on the bottom inclined plate 41 and is located within the surrounding area of multiple outer edges of the bottom inclined plate 41; the bottom plate vertical nozzle 44 faces the top of the powder spraying chamber 11 and is used to output gas from bottom to top. In addition to using the bottom plate horizontal nozzle 42 to output gas to the frame air outlet 112 to form an inclined wind curtain, this solution also uses the bottom plate vertical nozzle 44 to output gas from bottom to top; since the bottom plate vertical nozzle 44 is located within the surrounding area of multiple outer edges, the bottom plate vertical nozzle 44 can be called as needed, and the gas is blown out from the middle of the bottom inclined plate 41 toward the top of the powder spraying chamber 11, which can form a vertical wind curtain in the middle of the bottom inclined plate 41, thereby blowing up the powder when it falls to the middle of the bottom inclined plate 41, providing a deceleration effect for the falling of the powder, making it difficult for the powder to fall to the surface of the bottom inclined plate 41, so that the powder is transported to the frame air outlet 112 by the inclined wind curtain when it reaches the inclined wind curtain.

[0088] The floor cleaning mechanism 4 also includes a floor central tube 45, which is mounted on the bottom inclined plate 41. Multiple floor vertical nozzles 44 are installed at different output ends of the same floor central tube 45. This solution uses a single floor central tube 45 to connect multiple floor vertical nozzles 44. Gas is directly input to the input end of the floor central tube 45, and then discharged through the floor vertical nozzles 44 at different output ends, simplifying the gas circuit and increasing efficiency.

[0089] The ring-shaped bottom plate middle tube 45 can be disconnected at both ends or connected at both ends. The ring-shaped structure can make the distribution range of the bottom plate middle tube 45 on the bottom inclined plate 41 larger, the distribution number and distribution range of the bottom plate vertical nozzles 44 are larger, and the formation of the vertical air curtain is more stable and reliable.

[0090] The bottom plate cleaning mechanism 4 includes a bottom air pump 46 and a bottom vent pipe 47. The output end of the bottom vent pipe 47 is connected to the bottom plate horizontal nozzle 42 and / or the bottom plate vertical nozzle 44. The bottom air pump 46 is mounted on the bottom vent pipe 47. The bottom vent pipe 47 can be directly or indirectly connected to the bottom plate horizontal nozzle 42 and / or the bottom plate vertical nozzle 44. For example, it can be connected to multiple bottom plate horizontal nozzles 42 through a connection with the edge air guide 43, and connected to the bottom plate vertical nozzle 44 through a connection with the bottom plate middle pipe 45. In this embodiment, the bottom air pump 46 is connected to the bottom vent pipe 47. The bottom air pump 46 draws gas from a compressed gas source (e.g., compressed air) or gas outside the powder spray booth (normal pressure air). The bottom air pump 46 can pressurize the gas and output the pressurized gas to the bottom plate horizontal nozzle 42 and / or the bottom plate vertical nozzle 44. The air curtain formed by the pressurized gas is more effective in removing powder.

[0091] Optimally, the cleaning mechanism further comprises: a top cleaning component 8;

[0092] The top cleaning assembly 8 includes: a top frame 81 and a top blowing air nozzle 82;

[0093] The top frame 81 is fixed to the top plate 7; the top blowing nozzle 82 is connected to the top frame 81 and is located below the top plate 7. The output end of the top blowing nozzle 82 is directed toward the frame air outlet 112 for outputting gas toward the frame air outlet 112.

[0094] The top plate 7 is separated from the top blowing nozzle 82 to form a top hollow area 71 .

[0095] During the lifting and lowering of the powder spraying gun, when the powder spraying gun rises to the top of the powder spraying chamber 11, the powder rises with the air flow and easily accumulates on the top of the powder spraying chamber 11; in this regard, the present invention provides a top plate 7 on the top of the powder spraying chamber 11, and the top plate 7 can block the top of the powder spraying chamber 11 and can replace the top contact of the powder spraying chamber 11; the top frame 81 can be connected to the top plate 7, and the top frame 81 is used to fix the top blowing nozzle 82; the inner diameter of the powder spraying chamber 11 is reduced from front to back, the largest inner diameter is the frame air inlet 111, and the smallest inner diameter is the frame air outlet 112, and the top blowing nozzle 82 is facing the frame air outlet 112; when the top blowing air When the nozzle 82 outputs gas to the frame air outlet 112, the gas is output to the powder spraying chamber 11, and the gas drives the air in the powder spraying chamber 11 to be output to the frame air outlet 112. Due to the shape of the powder spraying chamber 11, the powder spraying chamber 11 forms a negative pressure below the top plate 7. The powder spraying chamber 11 then inhales the air outside the powder spraying chamber 11 through the frame air inlet 111, and the air is then output to the frame air outlet 112 through the gas output by the top-blowing air nozzle 82. In this way, the air and the gas output by the top-blowing air nozzle 82 form an air curtain together. The air curtain is located below the top plate 7, and the bottom surface of the top plate 7 can guide the air curtain to be output laterally to the frame air outlet 112. When the floating powder is output below the top plate 7, the air curtain can drive the powder to be transported in the direction of the frame air outlet 112, thereby preventing the powder in the powder spraying chamber 11 from adhering to the top plate 7, thereby solving the problem that the powder in the existing powder spraying chamber 11 is easily accumulated at the top position during powder spraying, making it difficult to recover and clean the powder.

[0096] The top frame 81 is separated from the top air blowing nozzle 82 to form a top hollow area 71. The top hollow area 71 can extend the vertical distance between the top air blowing nozzle 82 and the top wall of the powder spraying chamber 11, so that there is more space above the top air blowing nozzle 82 to accommodate powder; a small amount of powder is sprayed out when it is close to the top, and may have a large flow rate at the moment of spraying. Therefore, when this part of the powder passes through the top air blowing nozzle 82 upward, it will not immediately reach the top wall of the powder spraying chamber 11, but needs to pass through the top hollow area 71; and when the powder passes through the top hollow area 71, when the air curtain flows toward the frame air outlet 112, a negative pressure is formed at the frame air outlet 112, and the negative pressure can be used to slow down part of the powder in the top hollow area 71 and transfer it to the frame air outlet 112.

[0097] The top cleaning assembly 8 includes: a top panel 83; a plurality of top panels 83 respectively connected to the top frame 81, with adjacent top panels 83 spaced apart; and a plurality of top air nozzles 82 respectively installed on the same top panel 83. This solution preferably uses the top panel 83 to install the top air nozzles 82, and the top air nozzles 82 can be set on the top panels 83 at different positions as needed. The separation of the top panels 83 can avoid the spraying ranges of the top air nozzles 82 from blocking each other, ensuring that the airflow forms a continuous coverage surface; combined with the internal contour of the powder spraying chamber 11, the top air nozzles 82 can be concentrated and distributed at the horizontal alignment position of the frame air outlet 112, for example, the middle top panel 83 is aligned with the frame air outlet 112, and the middle top panel 83 can be provided with more top air nozzles 82 than other top panels 83, so that the airflow can be concentrated toward the frame air outlet 112.

[0098] The top cleaning assembly 8 also includes: a top pipe 84; the top pipe 84 is mounted on the top frame 81, and the top sub-plate 83 is provided with a top air blowing channel 831; the top pipe 84 has multiple output ends, which are respectively connected to the top air blowing channels 831 of multiple top sub-plates 83, and the top pipe 84 is used to output gas to the top air blowing channels 831; the multiple output ends of the top air blowing channels 831 are respectively installed with top air blowing nozzles 82. Each top sub-plate 83 is respectively provided with a top air blowing channel 831, which is used to serve as a conversion area for multiple top air blowing nozzles 82; this solution uses a single top pipe 84 to simultaneously connect multiple top air blowing channels 831, directly inputting gas into the input end of the top pipe 84, and the gas passes through the top air blowing channels 831. The top air blowing channels 831 are then output to the powder spraying chamber 11 from different output ends through the top air blowing nozzles 82. In this way, the gas path structure at the top of the powder spraying chamber 11 is simpler and more efficient.

[0099] Optimally, the exhaust cylinder 02 is provided with a top exhaust port 25 on the side of the top; the top exhaust port 25 is one of the input ends of the exhaust cylinder 02 and is connected to the frame air outlet 112, and the top exhaust port 25 is located at a horizontal position of the top cleaning component 8; the output end of the top air blowing nozzle 82 faces the top exhaust port 25; the top exhaust port 25 is linearly aligned with the cylinder exhaust ports 22 arranged below; the inner diameter of the top exhaust port 25 is larger than the inner diameters of the multiple cylinder exhaust ports 22 below it.

[0100] The exhaust port 22 of the exhaust cylinder 02 is multi-segmented, and the multi-segment exhaust port 22 is arranged in a straight line. Each exhaust port 22 corresponds to a certain horizontal area of the powder spraying chamber 11, so the exhaust ports 22 are distributed from low to high, and can inhale powder in different height areas of the powder spraying chamber 11; the exhaust port 22 is connected to the exhaust cavity 21, so the powder inhaled by the exhaust port 22 can be output to the exhaust cavity 21; the exhaust cylinder 02 is also provided with an air outlet 24, which is connected to the exhaust cavity 21. The inner cavity 21 and the barrel air outlet 24 can be connected to a conventional exhaust device 28. When the exhaust device 28 is started, the input end of the exhaust device 28 sucks away the gas from the barrel air outlet 24; the gas from the barrel air outlet 24 is sucked away by the exhaust device 28, so that a negative pressure is formed in the exhaust cavity 21. Under the action of the negative pressure, the exhaust cavity 21 sucks in the air from the powder spraying chamber 11 through the multi-stage barrel air outlet 22, and the powder is transferred from the powder spraying chamber 11 to the exhaust cavity 21 along with the air, and then discharged through the barrel air outlet 24. In this solution, a top exhaust port 25 is provided above a plurality of linearly arranged tube exhaust ports 22, and the top exhaust port 25 is located at the top of the exhaust cylinder 02; the inner diameter of the top exhaust port 25 is larger than the inner diameter of the plurality of tube exhaust ports 22 below it, that is, the top exhaust port 25 can inhale more powder than the tube exhaust ports 22 below it, and the exhaust cylinder 02 is vertically installed in the powder spraying chamber 11, and the powder inhaled at different height positions of the powder spraying chamber 11 can be increased to inhale the powder output by the powder spraying gun near the top of the powder spraying chamber 11, thereby avoiding the accumulation of more powder on the top of the powder spraying chamber 11, thereby avoiding the problem of difficulty in cleaning the residual powder on the top and increased powder consumption.

[0101] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A spray-on powder spraying room, characterized in that: include: Powder spraying main frame, cleaning mechanism, V-shaped powder spraying device and workpiece conveying mechanism; A powder spraying chamber is provided on the inner side of the powder spraying main frame; the cleaning mechanism is provided in the powder spraying chamber for cleaning the powder spraying chamber; The V-shaped powder spraying device is arranged in the powder spraying room; The V-shaped powder spraying device includes: a center frame, a side frame and a powder spraying gun; The central frame is provided with a frame base and a middle oblique plate, a pair of the middle oblique plates being installed at left and right positions of the frame base; the middle oblique plates are inclined and extended, and the two middle oblique plates are close to each other in the center direction thereof; The side frames are respectively arranged on the left and right sides of the center frame, and the side frames are provided with outer inclined plates; the surface of the outer inclined plates is close to the surface of the middle inclined plates, and the two are separated to form a powder spraying channel; the powder spraying channel is respectively provided with a channel hollow opening at one end of the two middle inclined plates that are close to each other; The powder spray gun is installed on the middle inclined plate and the outer inclined plate respectively; the output end of the powder spray gun faces the powder spray channel, and is used to output powder to the powder spray channel; The conveying end of the workpiece conveying mechanism is used to convey the workpiece to pass through the two powder spraying channels and the hollow openings of the channels; the powder spraying gun is used to output powder to the workpiece passing through the powder spraying channels.

2. A spray-on powder spraying room according to claim 1, characterized in that: The facing surfaces of the middle inclined plate and the outer inclined plate are respectively provided with powder outlet holes; part of the powder spray gun is located outside the powder spray channel, the output end of the powder spray gun is installed at the powder outlet hole, and the powder spray channel exposes the output end of the powder spray gun at the powder outlet hole; in the powder spray channel, the middle inclined plate and the outer inclined plate are parallel on the facing surfaces, and in the powder spray channel, the powder outlet hole of the middle inclined plate and the powder outlet hole of the outer inclined plate are respectively coaxially aligned.

3. The spray powder booth according to claim 1, characterized in that: The V-shaped powder spraying device further comprises: a powder spraying lifting mechanism; The powder spray lifting mechanism includes: a powder spray synchronization frame and a powder spray moving driver; The center frame and the side frame are installed on the powder spraying synchronous frame; the output end of the powder spraying mobile driver is connected to the powder spraying synchronous frame, which is used to drive the powder spraying synchronous frame to move, and drive the powder spraying channel and the powder spraying gun to move in the powder spraying chamber.

4. The spray powder booth according to claim 1, characterized in that: The inner diameter of the powder spraying chamber decreases from front to back, an air inlet is provided at the front of the powder spraying chamber, and an air outlet is provided at the rear of the powder spraying chamber; The cleaning mechanism includes: an exhaust cylinder and an exhaust device; The exhaust cylinder is provided with an exhaust cavity along the height extension direction; a plurality of sections of cylinder exhaust ports are respectively provided on the side of the exhaust cylinder from low to high, the exhaust cylinder is installed on the powder spraying main frame, a plurality of the cylinder exhaust ports are connected with the frame air outlet, and the cleaning positions of some of the cleaning mechanisms are horizontally aligned with the cylinder exhaust ports; a plurality of the cylinder exhaust ports are arranged in a straight line in sequence, and the cylinder exhaust ports are the input end of the exhaust cylinder; a cylinder air outlet is provided on the side of the exhaust cylinder, and the cylinder air outlet is the output end of the exhaust cylinder; the cylinder exhaust port, the exhaust cavity and the cylinder air outlet are connected, and the input end of the exhaust device is connected with the cylinder air outlet.

5. The spray powder booth according to claim 4, characterized in that: Two of the upper and lower distributed tube exhaust vents are separated to form an air-proof side surface; a tube air outlet is provided on the side of the exhaust tube, and the tube air outlet is located outside the air-proof side surface, and the tube air outlet is horizontally aligned with the air-proof side surface; for some adjacent sections of the tube exhaust vents, the inner diameter of the relatively lower tube exhaust vent is larger than the inner diameter of the relatively upper tube exhaust vent.

6. The spray powder booth according to claim 4, characterized in that: The cleaning mechanism includes: a side cleaning assembly; The side cleaning assembly includes: a side baffle and a side cleaning nozzle; The side baffle is arranged in the powder spraying chamber in a manner that can be raised and lowered and adjusted; the side baffle extends from the frame air inlet to the frame air outlet, and the side baffle extends parallel to the inner side wall of the powder spraying chamber, and the side baffle exposes a side panel gap at the frame air outlet, and the side panel gap is horizontally aligned with the frame air outlet; a plurality of side cleaning nozzles are connected to the side baffle in an angle-adjustable manner and are arranged along the length direction of the side baffle; the side cleaning nozzles are used to output gas to the powder spraying chamber.

7. The spray powder booth according to claim 6, characterized in that: The side cleaning assembly further comprises: a side connecting plate, a side plate lifting guide rail, a side plate lifting block and a side plate lifting drive mechanism; A pair of side baffles are distributed on the left and right sides of the rack air outlet, one end of the side connecting plate is connected to one of the side baffles, and the other end of the side connecting plate is connected to the other side baffle; the two side plate cleaning portions are separated by the side connecting plate, and the side plate notch is formed at the separation; The side panel lifting guide rail is vertically mounted on the powder spraying chamber; the side panel lifting block is movably mounted on the side panel lifting guide rail, the side panel lifting block is connected to one of the side baffles, and the side baffle is lifted and lowered along the side panel lifting guide rail; The side panel lifting drive mechanism includes: a side panel connecting seat, a side panel synchronization rod and a side lifting driver; The side panels at the left and right positions are respectively installed with the side panel connecting seats; the side panel synchronization rod connects the side panel connecting seats at the left and right positions together; the output end of the side lifting driver is connected to the side panel synchronization rod or the side panel connecting seat, which is used to drive the side panel connecting seat to rise and fall, and drive the side panel to rise and fall along the side panel lifting guide rail.

8. The spray powder booth according to claim 4, characterized in that: The cleaning mechanism further comprises: a bottom plate cleaning mechanism; The bottom plate cleaning mechanism is installed at the bottom of the powder spraying room; The bottom plate cleaning mechanism includes: a bottom inclined plate and a bottom plate horizontal nozzle; The bottom inclined plate is installed obliquely at the bottom of the powder spraying chamber, the lower end of the bottom inclined plate in the inclined direction is close to the frame air outlet, and the upper end of the bottom inclined plate in the inclined direction is close to the frame air inlet; the bottom plate horizontal nozzle is installed on the bottom inclined plate, and the bottom plate horizontal nozzle is used to output gas toward the frame air outlet.

9. The spray powder booth according to claim 4, characterized in that: The cleaning mechanism further comprises: a top cleaning assembly; The top cleaning assembly includes: a top frame and a top blowing air nozzle; The top frame is fixed to the top plate; the top blowing air nozzle is connected to the top frame and is located below the top plate, and the output end of the top blowing air nozzle is oriented toward the frame air outlet, for outputting gas toward the frame air outlet; The top plate is separated from the top blowing air nozzle to form a top hollow area.

10. The spray powder booth according to claim 9, characterized in that: The exhaust cylinder is provided with a top exhaust port on the side of the top; the top exhaust port is one of the input ends of the exhaust cylinder and is connected to the frame air outlet, and the top exhaust port is located at a horizontal position of the top cleaning component; the output end of the top air blowing nozzle faces the top exhaust port; the top exhaust port is linearly aligned with the cylinder exhaust ports arranged below; the inner diameter of the top exhaust port is larger than the inner diameters of the multiple cylinder exhaust ports below it.

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