Suspension type electrostatic spraying device

Abstract

The utility model relates to the technical field of electrostatic spraying, in particular to a suspension type electrostatic spraying device which comprises a spraying box, and a purification mechanism is mounted at one corner of the upper end of the spraying box. According to the electrostatic spraying device, the purification mechanism is installed in the spraying box, redundant coating powder in the spraying process can be blocked through the spraying box during electrostatic spraying of workpieces, the redundant coating powder is prevented from escaping all around, meanwhile, the redundant coating powder in the spraying box is pumped into a dust filtering box through cooperation with a dust suction fan and a dust suction cover, and the spraying efficiency is improved. Dust-containing gas entering the dust filtering box is filtered by the dust filtering screen plate, so that the environment of a workpiece electrostatic spraying place is ensured to be clean; the two-way material changing mechanism is installed at the feeding position of the spraying box, after spraying of the workpiece on one hanging frame is completed, the device can continue to machine another workpiece which is not sprayed, the downtime of the device is shortened, and therefore the electrostatic spraying efficiency of the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrostatic spraying, in particular to a hanging type electrostatic spraying device. BACKGROUND

[0002] Electrostatic spraying is a method of uniformly spraying paint onto the surface of an object using the principle of electric field. This technology is widely used in the fields of automobile manufacturing, home appliances, metal processing, etc., because it can achieve efficient and uniform coating effect, and the utilization rate of paint is high.

[0003] Currently, there are mainly two ways to electrostatically spray workpieces. One is to manually hold an electrostatic spray gun to electrostatically spray the surface of the workpiece, and the other is to use a lifting type spray cover to automatically spray paint on the surface of the workpiece. The manual spraying method is mainly suitable for the spraying of the surface of small workpieces, while the automatic spraying method is mainly suitable for the spraying of large workpieces.

[0004] However, whether it is manual spraying with a spray gun or automatic spraying with a spray cover, there are problems of the escape of excess powder everywhere during the spraying process and a long downtime of the device during the material changing process. The former will result in a dirty environment around the workpiece during electrostatic spraying, while the latter will make the entire electrostatic spraying process of the workpiece not continuous, and the electrostatic spraying efficiency is relatively low. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a hanging type electrostatic spraying device which can not only realize the suction and purification of excess paint powder during electrostatic spraying, ensuring the cleanliness of the electrostatic spraying environment of the workpiece, but also reduce the downtime of the device during material changing by alternating material changing.

[0006] The above application purpose of the present application is realized by the following technical scheme:

[0007] A hanging type electrostatic spraying device, comprising a spraying box, a purification mechanism is installed at one corner of the upper end of the spraying box, and a bidirectional material changing mechanism is installed on the feeding side of the spraying box, wherein the purification mechanism comprises a dust filtering box, a dust suction fan, a dust suction cover and a dust filtering net plate, the dust filtering box is located at one side of the top end of the spraying box, the dust filtering net plate is slidingly installed on the dust filtering box, the dust suction fan is located at one side of the dust filtering box and connected to the dust suction cover through a pipeline, the dust suction cover is embedded in one side wall of the spraying box, the bidirectional material changing mechanism comprises a motor, a toothed strip, a hanging frame, a hanging rod and a drive gear, there are two hanging frames, the toothed strip is located on the upper part of the opposite side walls of each hanging frame, the drive gear is located between the two toothed strips, the motor is located at the top end of the spraying box and connected to the drive gear, and the hanging rod is located at the top end of each hanging frame.

[0008] Optionally, the dust suction cover is a porous structure facing the side wall in the spraying box, and the side wall of the dust suction cover facing the spraying box is flush with the inner wall of the spraying box.

[0009] Optionally, the air inlet of the dust filter box is connected with the air outlet of the dust suction fan through a pipeline, and the air outlet of the dust filter box is located below the dust filter screen plate.

[0010] Optionally, the top end of the dust filter box and the two matching parts of the hanging frame are groove structures, and the hanging frame is slidingly matched with the groove structure.

[0011] Optionally, the driving gear is engaged with the toothed strips of the two hanging frames, each of the hanging frames is provided with two hanging rods, and the two hanging rods are symmetrically distributed on the same hanging frame.

[0012] Optionally, an electrostatic spraying mechanism is further installed on one side of the hanging frame in the spraying box, and the electrostatic spraying mechanism comprises an electric telescopic rod, an electric sliding rail, an electrostatic spraying cover, an air pump, a material pump and a material box.

[0013] Optionally, the electric sliding rail is installed on one side of the top end of the spraying box, the fixed part of the electric telescopic rod is connected with a sliding block provided on the electric sliding rail, and the telescopic part of the electric telescopic rod is connected with the electrostatic spraying cover.

[0014] Optionally, the air pump is located on the side wall of the electrostatic spraying cover away from the hanging frame, and the air outlet of the air pump is in communication with the inside of the electrostatic spraying cover.

[0015] Optionally, the material box is located on the side wall adjacent to the hanging frame outside the spraying box, and the material pump is installed on the top end of the material box and connected with the electrostatic spraying cover through a pipeline.

[0016] Optionally, a supporting table is further welded on the bottom end of the spraying box.

[0017] In summary, the present application has at least one of the following beneficial technical effects:

[0018] The purification mechanism comprising the dust suction fan, the dust filter box, the dust suction cover and the dust filter screen plate is installed on the spraying box, so that the excess coating powder in the spraying process can be blocked by the spraying box during electrostatic spraying of the workpiece, the excess coating powder is prevented from escaping everywhere, the dust suction fan and the dust suction cover are used to suck and send the excess coating powder in the spraying box to the dust filter box, the dust filter screen plate is used to filter the dust-containing gas entering the dust filter box, and the environment of the electrostatic spraying site of the workpiece is ensured to be clean.

[0019] The utility model discloses a two -way material changing mechanism, the workpiece of the other hanging is taken out to the inside of the spraying box and carries out electrostatic spraying processing through the rotation of the driving gear driven by the motor after the workpiece on one hanging frame is sprayed, ensures when the workpiece after spraying is removed and is collected, can make the device to another un -sprayed workpiece continues processing, reduces the downtime of device, thereby makes the electrostatic spraying efficiency of workpiece improve. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the main sectional view provided by the embodiment of the application.

[0021] Figure 2 It is the structural schematic view provided by the embodiment of the application.

[0022] Figure 3 It is the structural schematic view of two -way material changing mechanism provided by the embodiment of the application.

[0023] Figure 4 It is the structural schematic view of electrostatic spraying cover provided by the embodiment of the application.

[0024] The drawings are explained: 1, spraying box;2, support table;3, purification mechanism;31, filter dust box;32, dust suction fan;33, dust suction cover;34, filter dust net board;4, electrostatic spraying mechanism;41, electric telescopic rod;42, electric slide rail;43, electrostatic spraying cover;44, air pump;45, material pump;46, material box;5, two -way material changing mechanism;51, motor;52, toothed strip;53, hanging frame;54, boom;55, driving gear. DETAILED DESCRIPTION

[0025] The application is further described in detail below in combination with the drawings.

[0026] In order to more clearly understand the technical scheme shown in the embodiment of the application, first, the working principle of the suspension type electrostatic spraying device in the prior art is introduced.

[0027] The current suspension type electrostatic spraying device mainly has two ways when electrostatic spraying workpieces, one is that the workpiece is hung on the hanger on the device, and then the surface of the workpiece is electrostatically sprayed by manually holding the electrostatic spraying gun, and the other is that the workpiece is hung on the hanger on the device, and then the automatic spraying of the coating on the surface of the workpiece is realized by the lifting type spraying cover. The manual spraying mode is mainly suitable for the spraying of the surface of some small workpieces, and the automatic spraying mode is mainly suitable for the spraying of some large workpieces.

[0028] Please refer to Figures 1-4The hanging electrostatic spraying device disclosed by the embodiment of the application comprises a spraying box 1, a purification mechanism 3 is installed at a corner of the upper end of the spraying box 1, and a bidirectional material changing mechanism 5 is installed on the feeding side of the spraying box 1, wherein the purification mechanism 3 comprises a dust filtering box 31, a dust suction fan 32, a dust suction hood 33 and a dust filtering screen plate 34, the dust filtering box 31 is located at one side of the top end of the spraying box 1, the dust filtering screen plate 34 is slidingly installed on the dust filtering box 31, the dust suction fan 32 is located at one side of the dust filtering box 31 and is connected with the dust suction hood 33 through a pipeline, the dust suction hood 33 is embedded on one side wall in the spraying box 1, and the bidirectional material changing mechanism 5 comprises a motor 51, a toothed strip 52, two hanging frames 53, a hanging rod 54 and a driving gear 55, the toothed strip 52 is located on the upper part of the opposite side walls of each hanging frame 53, the driving gear 55 is located between the two toothed strips 52, the motor 51 is located at the top end of the spraying box 1 and is connected with the driving gear 55, and the hanging rod 54 is located at the top end in each hanging frame 53.

[0029] Specifically, when the workpiece hung on one hanging frame 53 is sprayed, the excess coating powder after spraying is concentrated and diffused in the spraying box 1 under the shielding effect of the spraying box 1, meanwhile, the dust suction fan 32 and the dust suction hood 33 are used to suck the coating powder diffused in the spraying box 1, and the dust filtering screen plate 34 in the dust filtering box 31 is used to filter the dust-containing gas after suction, so that the coating powder after diffusion is collected and reused, the environment of the electrostatic spraying place is purified, the spraying environment is ensured to be clean, and when the workpiece after spraying is replaced, the driving gear 55 is driven to rotate by the motor 51, so that the hanging frame 53 after spraying is moved out of the spraying box 1, and the other hanging frame 53 with the workpiece to be sprayed is slid into the spraying box 1, thereby ensuring that the other workpiece not sprayed can be continuously sprayed when the workpiece after spraying is replaced, reducing the downtime of the device and ensuring the continuity of the electrostatic spraying process of the workpiece.

[0030] Please refer to Figure 1 , the side wall of the dust suction hood 33 facing the spraying box 1 is of a porous structure, and the side wall of the dust suction hood 33 facing the spraying box 1 is flush with the inner wall of the spraying box 1.

[0031] As an embodiment, the dust suction surface of the dust suction hood 33 is of a porous structure, which can ensure that the dust suction hood 33 has sufficient suction area to fully suck the excess coating powder in the spraying box 1, and the dust suction surface of the dust suction hood 33 is flush with the inner wall of the spraying box 1, which can avoid excessive powder coating from adhering to the inner wall of the spraying box 1.

[0032] Please refer to Figure 1 and Figure 2 , the air inlet of the dust filtering box 31 is connected with the air outlet of the dust suction fan 32 through a pipeline, and the air outlet of the dust filtering box 31 is located at the lower side of the dust filtering screen plate 34.

[0033] As an implementation form, the dust-containing gas sucked and delivered by the dust suction fan 32 is filtered under the action of the dust filtering screen plate 34 after entering the dust filtering box 31, and the filtered gas is discharged through the exhaust port of the dust filtering box 31.

[0034] Please refer to Figures 1-3 , the top end of the dust filtering box 31 and the two hanging frames 53 are matched with a groove structure, and the hanging frame 53 is slidingly matched with the groove structure.

[0035] As an implementation form, the groove formed at the top end of the dust filtering box 31 can realize the convenient sliding of the hanging frame 53 relative to the spraying box 1, and ensure the stability of the sliding of the hanging frame 53.

[0036] Please refer to Figure 1 and Figure 3 , the driving gear 55 is engaged with the toothed strips 52 of the two hanging frames 53, and each of the two hanging frames 53 is provided with two hangers 54, and the two hangers 54 are symmetrically distributed on the same hanging frame 53.

[0037] As an implementation form, the driving gear 55 is rotated to slide one of the hanging frames 53 in the spraying box 1, and the other of the hanging frames 53 is slid out of the spraying box 1, so as to realize the alternate feeding of the workpiece.

[0038] Please refer to Figure 1 , the spraying box 1 is further provided with an electrostatic spraying mechanism 4 on one side of the hanging frame 53, and the electrostatic spraying mechanism 4 comprises an electric telescopic rod 41, an electric sliding rail 42, an electrostatic spraying cover 43, an air pump 44, a material pump 45 and a material box 46.

[0039] As an implementation form, when the workpiece is located in the spraying box 1, the distance between the electrostatic spraying cover 43 and the workpiece is adjusted under the action of the electric sliding rail 42, and then the spraying of the coating powder to the surface of the workpiece is realized under the actions of the air pump 44 and the material pump 45, and the electrostatic spraying cover 43 is lifted up and down under the action of the electric telescopic rod 41, so as to realize the full spraying of the surface of the workpiece.

[0040] Please refer to Figures 1-3 , the electric sliding rail 42 is installed on one side of the top end of the spraying box 1, the fixed part of the electric telescopic rod 41 is connected with the sliding block of the electric sliding rail 42, and the telescopic part of the electric telescopic rod 41 is connected with the electrostatic spraying cover 43.

[0041] As an implementation form, the electric telescopic rod 41 is moved after the electric sliding rail 42 is started, so that the synchronous movement adjustment of the electrostatic spraying cover 43 is realized by means of the electric telescopic rod 41, and the electric telescopic rod 41 is mainly used for realizing the up-down lifting adjustment of the electrostatic spraying cover 43 relative to the surface of the workpiece.

[0042] Please refer to Figure 1The air pump 44 is arranged on the side wall of the hanging frame 53 opposite to the electrostatic spraying cover 43, and the exhaust port of the air pump 44 is communicated with the inside of the electrostatic spraying cover 43.

[0043] As an embodiment, the air pump 44 can atomize the paint powder in the electrostatic spraying cover 43 into high-pressure mist and spray it out.

[0044] Please refer to Figure 1 The paint tank 46 is arranged on the side wall of the spraying box 1 adjacent to the hanging frame 53, and the paint pump 45 is arranged at the top of the paint tank 46 and connected to the electrostatic spraying cover 43 through a pipeline.

[0045] As an embodiment, the paint tank 46 is mainly used for storing the paint to be sprayed, and the paint pump 45 is mainly used for pumping the paint powder for spraying into the electrostatic spraying cover 43.

[0046] Please refer to Figure 1 and Figure 2 The spraying box 1 is further welded with a support table 2 at the bottom end.

[0047] As an embodiment, the support table 2 can stably place the spraying box 1 in the workpiece spraying place.

[0048] Specific working principle is that, when the workpiece is sprayed, first, the workpiece to be sprayed is hung on the two hanging frames 53 by means of the corresponding hangers 54, and one of the hanging frames 53 is located in the spraying box 1, then the distance between the electrostatic spraying cover 43 and the workpiece is adjusted under the action of the electric sliding rail 42, then the paint powder is pumped into the electrostatic spraying cover 43 under the action of the paint pump 45, and at the same time, the paint powder in the electrostatic spraying cover 43 is atomized and sprayed to the surface of the workpiece under the action of the air pump 44, and at the same time, the electrostatic spraying cover 43 is lifted up and down along the surface of the workpiece by means of the electric telescopic rod 41, so as to realize the full spraying of the surface of the workpiece. During the spraying process, the spraying box 1 is used to block the excess paint powder during the spraying process, so as to avoid the escape of the excess paint powder everywhere, and at the same time, the dust suction fan 32 and the dust suction cover 33 are used to pump the excess paint powder in the spraying box 1 into the dust filtering box 31, and the dust filtering screen 34 is used to filter the dust-containing gas entering the dust filtering box 31, so as to ensure the cleanliness of the environment of the workpiece electrostatic spraying place. When the workpiece spraying is completed and replaced, the driving gear 55 is driven to rotate by the motor 51 to realize the removal of the spraying hanging frame 53, and at the same time, the other hanging frame 53 with the workpiece is extended into the spraying box 1 for electrostatic spraying processing, so as to ensure that the device can continue to process another un-sprayed workpiece when the sprayed workpiece is removed and collected, thereby reducing the downtime of the device, and improving the efficiency of the workpiece electrostatic spraying.

[0049] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A suspended electrostatic spraying device, characterized in that: The system includes a spray box (1), a purification mechanism (3) installed at one corner of the upper end of the spray box (1), and a bidirectional material changing mechanism (5) installed on the feeding side of the spray box (1). The purification mechanism (3) includes a dust filter box (31), a dust collector (32), a dust hood (33), and a dust filter screen (34). The dust filter box (31) is located on one side of the top of the spray box (1). The dust filter screen (34) is slidably installed on the dust filter box (31). The dust collector (32) is located on one side of the dust filter box (31) and is connected to the dust hood (33) through a pipe. The dust cover (33) is embedded in one side wall of the spray box (1). The bidirectional material changing mechanism (5) includes a motor (51), toothed strips (52), a hanging frame (53), a hanging rod (54), and a drive gear (55). There are two hanging frames (53). The toothed strips (52) are located on the upper part of the opposite side wall of each hanging frame (53). The drive gear (55) is located between the two toothed strips (52). The motor (51) is located at the top of the spray box (1) and connected to the drive gear (55). The hanging rod (54) is located at the top of each hanging frame (53).

2. The suspended electrostatic spraying device according to claim 1, characterized in that: The dust collection hood (33) facing the inner wall of the spray box (1) has a porous structure, and the side wall of the dust collection hood (33) facing the inner wall of the spray box (1) is flush with the inner wall of the spray box (1).

3. The suspended electrostatic spraying device according to claim 1, characterized in that: The air inlet of the dust filter box (31) is connected to the exhaust port of the dust collector (32) through a pipe, and the exhaust port of the dust filter box (31) is located on the lower side of the dust filter screen (34).

4. The suspended electrostatic spraying device according to claim 1, characterized in that: The top part of the dust filter box (31) that mates with the two hanging frames (53) is a groove structure, and the hanging frame (53) slides in conjunction with the groove structure.

5. A suspended electrostatic spraying device according to claim 1, characterized in that: The drive gear (55) meshes with the toothed strips (52) of the two hanging frames (53), and each hanging frame (53) has two hanging rods (54), and the two hanging rods (54) are symmetrically distributed on the same hanging frame (53).

6. A suspended electrostatic spraying device according to claim 1, characterized in that: An electrostatic spraying mechanism (4) is also installed inside the spraying box (1) on one side of the hanging frame (53). The electrostatic spraying mechanism (4) includes an electric telescopic rod (41), an electric slide rail (42), an electrostatic spray hood (43), an air pump (44), a material pump (45), and a material box (46).

7. A suspended electrostatic spraying device according to claim 6, characterized in that: The electric slide rail (42) is installed on one side of the top of the spray box (1). The fixed part of the electric telescopic rod (41) is connected to the sliding block on the electric slide rail (42). The telescopic part of the electric telescopic rod (41) is connected to the electrostatic spray cover (43).

8. A suspended electrostatic spraying device according to claim 6, characterized in that: The air pump (44) is located on the side wall of the electrostatic spray hood (43) facing away from the hanging frame (53), and the exhaust port of the air pump (44) is connected to the interior of the electrostatic spray hood (43).

9. A suspended electrostatic spraying device according to claim 6, characterized in that: The material box (46) is located on the side wall adjacent to the hanging frame (53) outside the spray box (1), and the material pump (45) is installed at the top of the material box (46) and connected to the electrostatic spray hood (43) through a pipe.

10. A suspended electrostatic spraying device according to claim 1, characterized in that: A support platform (2) is also welded to the bottom of the spray box (1).

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