Robot spraying device

Abstract

The utility model belongs to the technical field of intelligent metal furniture spraying, and discloses a robot spraying device which comprises two cantilever assemblies which are symmetrically arranged and used for double-side suspension and simultaneous spraying, and further comprises a feeding assembly used for continuously and circularly conveying suspended workpieces, and a machine box assembly used for closed spraying and dust suction is arranged in the middle of the feeding assembly. The cantilever assembly is mounted at the top in the case assembly; the feeding assembly comprises two bearing frames which are symmetrically arranged, chain wheels are rotationally installed at the top ends of the bearing frames, a conveying chain is installed between the chain wheels, a plurality of lifting hooks are evenly installed on the conveying chain, and a driving mechanism used for providing rotating power is arranged below one chain wheel. According to the robot spraying device, the conveying chain drives a workpiece on the lifting hook to move circularly, and the mechanical arm driven by the linear motor reciprocates, so that spraying and conveying are carried out synchronously, and uninterrupted assembly line work is formed; and the conveying chain moves stably, and uneven spraying caused by workpiece shaking is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent metal furniture spraying technology, and in particular relates to a robotic spraying device. Background Technology

[0002] Currently, the furniture industry widely uses electrostatic powder coating. The main problems with this process are coating quality issues (uneven particle size, impurities, bubbles, orange peel texture, color difference), production efficiency, and worker health. To address these issues, the industry has adopted a reciprocating powder coating machine. However, this machine can only move up and down, which cannot solve most quality problems and cannot provide targeted treatment for the edges and corners of some parts. These areas still require workers to perform focused powder coating, which can negatively impact worker health.

[0003] Comparing this to Chinese patent CN212856320U, a robotic spraying device is disclosed, comprising a worktable and a robot body. The worktable includes a mounting base, a rotating frame, and two spraying frames. The mounting base is equipped with a first selector motor, the center of the rotating frame is located at the first selector motor, and second rotating motors are located at both ends of the rotating frame. The two spraying frames are respectively located at the second rotating motors, and each spraying frame has a plurality of fixtures for mounting workpieces. The robot body is equipped with an automatic spray gun, which has a spray pipe. The robot body drives the automatic spray gun to spray the workpieces on the fixtures. This not only improves work efficiency but also, since the spraying process is performed by a robot instead of manually, it will not affect the health of workers.

[0004] Although the aforementioned patent allows for rotating and changing spraying stations, it cannot form an uninterrupted production line operation and only sprays from one side, which severely reduces the spraying speed and greatly affects the spraying efficiency. Therefore, a new type of equipment needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a robotic spraying device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A robotic spraying device includes two symmetrically arranged cantilever assemblies for simultaneous spraying while suspended on both sides, and a feeding assembly for continuous cyclic conveying of suspended workpieces. A housing assembly for enclosing and suctioning dust during spraying is located in the middle of the feeding assembly. The cantilever assemblies are installed at the top of the housing assembly. The feeding assembly includes two symmetrically arranged support frames, with sprockets rotatably mounted on the top of each support frame. A conveyor chain is installed between the sprockets, and several hooks are evenly installed on the conveyor chain. A drive mechanism for providing rotational power is located below one of the sprockets. The housing assembly includes a housing body with four baffles evenly distributed on both sides. An inlet and outlet are located between two baffles on the same side. A dust suction mechanism is located at the top of the housing body.

[0008] Furthermore: the cantilever assembly includes a robotic arm, the top of which is provided with a translation mechanism for longitudinal reciprocating movement, the bottom of which is equipped with a swing frame, and the middle of which is equipped with a nozzle.

[0009] Furthermore: the translation mechanism includes a translation platform mounted on the top of the robotic arm, two linear motors are symmetrically mounted on the translation platform, a linear guide rail is provided between the linear motors, and the linear guide rail is fixedly installed on the top surface of the machine housing.

[0010] Furthermore: the drive mechanism includes a passive gear ring fixedly mounted below the sprocket, a drive gear meshing on one side of the passive gear ring, a servo motor disposed below the drive gear, and the servo motor fixedly mounted on the support frame.

[0011] Furthermore: the two hooks form a set, and the hooks and the conveyor chain are bolted together.

[0012] Furthermore: the flow guiding mechanism includes a manifold, which is frustoconical in shape, and a connecting pipe is provided at the top of the manifold. The manifold, the connecting pipe, and the chassis are welded together.

[0013] Furthermore, a waste trough is provided at the bottom of the chassis.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] 1. The conveyor chain drives the workpiece on the hook to move in a cycle. Combined with the reciprocating motion of the robotic arm driven by the linear motor, the spraying and conveying are synchronized to form an uninterrupted production line operation. The servo motor drives the gear ring to drive the sprocket, and the conveyor chain moves smoothly, avoiding uneven spraying caused by workpiece vibration. The hook bolt connection makes it easy to adjust the spacing and adapt to workpieces of different sizes.

[0016] 2. The symmetrically arranged robotic arms, together with the swing frame and spray head, can spray the workpiece from both sides simultaneously, eliminating the waiting time of single-sided spraying and doubling the spraying efficiency; the robotic arms achieve precise longitudinal movement through the translation mechanism (linear motor + guide rail), and the swing frame drives the spray head to rotate at multiple angles, adapting to complex workpiece curved surfaces and covering all dead angles.

[0017] 3. The side panels of the chassis form a semi-enclosed space, effectively blocking dust from overflowing. The inlet and outlet only allow the workpiece to pass through, reducing the diffusion of particulate matter in the working environment. The manifold is connected to the external purification equipment to actively suck up suspended dust. The waste tank collects settled dust, and the dual treatment reduces pollution. Workers do not need to come into contact with the spraying area, avoiding the inhalation of harmful substances or contact with the paint. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the robot spraying device described in this utility model;

[0019] Figure 2 This is a front view of the feeding component of the robot spraying device described in this utility model;

[0020] Figure 3 This is a bottom-view axonometric view of the feeding component of the robot spraying device described in this utility model;

[0021] Figure 4 This is a schematic diagram of the chassis assembly of the robot spraying device described in this utility model;

[0022] Figure 5 This is a front perspective view of the chassis assembly of the robot spraying device described in this utility model;

[0023] Figure 6 This is a schematic diagram of the cantilever assembly of a robot spraying device according to the present invention.

[0024] In the attached diagram, the following are the reference numerals: 101, support frame; 102, sprocket; 103, driven gear ring; 104, drive gear; 105, servo motor; 106, conveyor chain; 107, hook; 201, chassis; 202, waste trough; 203, baffle; 204, inlet / outlet; 205, manifold; 206, connecting pipe; 301, linear guide rail; 302, linear motor; 303, translation stage; 304, robotic arm; 305, swing frame; 306, nozzle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-6 A robotic spraying device includes two symmetrically arranged cantilever assemblies for simultaneous spraying while suspended on both sides, and a feeding assembly for continuously conveying suspended workpieces. A housing assembly for enclosing and sucking up dust during spraying is disposed in the middle of the feeding assembly, and the cantilever assemblies are installed on the top inside the housing assembly.

[0027] In this embodiment: the feeding assembly includes two symmetrically arranged support frames 101, with sprockets 102 rotatably mounted on the top of each support frame 101. A conveyor chain 106 is installed between the sprockets 102, and several hooks 107 are evenly installed on the conveyor chain 106. A drive mechanism for providing rotational power is provided below one of the sprockets 102. The drive mechanism includes a driven gear ring 103 fixedly mounted below the sprocket 102, with a drive gear 104 meshing on one side of the driven gear ring 103. A servo motor 105 is provided on the surface and is fixedly mounted on the support frame 101. Two hooks 107 are a group and are bolted to the conveyor chain 106. The workpiece is hooked and suspended on the conveyor chain 106 by the hooks 107. The support frame 101 supports the servo motor 105 to drive the drive gear 104 to mesh with the passive gear ring 103 to drive the sprocket 102 to rotate. The sprocket 102 rotates under the support of the support frame 101 and pushes the conveyor chain 106 to drive the workpiece to move cyclically through the hooks 107.

[0028] In this embodiment: the chassis assembly includes a chassis body 201, a waste trough 202 is provided at the bottom of the chassis body 201, four baffles 203 are evenly distributed on both sides of the chassis body 201, an inlet and outlet 204 are provided between two baffles 203 on the same side, and a flow guiding mechanism for sucking up dust is provided at the top of the chassis body 201; the flow guiding mechanism includes a converging hood 205, which is frustoconical in shape, and a connecting pipe 206 is provided at the top of the converging hood 205; the converging hood 205, the connecting pipe 206 and the chassis body 201 are welded together; the baffles 203 prevent dust inside the chassis body 201 from flying outward, the inlet and outlet 204 are used for workpieces to enter and exit the chassis body 201 for spraying, and the external purification equipment sucks up the dust flying inside the chassis body 201 through the connecting pipe 206 under the convergence and guidance of the converging hood 205; the heavier dust falls into the waste trough 202 under the action of gravity;

[0029] In this embodiment: the cantilever assembly includes a robotic arm 304, with a translation mechanism for longitudinal reciprocating movement at the top of the robotic arm 304, and a swing frame 305 installed at the bottom of the robotic arm 304, with a spray nozzle 306 installed in the middle of the swing frame 305; the translation mechanism includes a translation stage 303 installed at the top of the robotic arm 304, with two linear motors 302 symmetrically installed on the translation stage 303, and a linear guide rail 301 installed in the middle of the linear motors 302, which is fixedly installed on the top surface inside the housing 201; the linear motors 302 drive the robotic arm 304 to reciprocate along the linear guide rail 301 through the translation stage 303, and the robotic arm 304 itself bends and drives the spray nozzle 306 to rotate through the swing frame 305, so as to spray both sides of the workpiece simultaneously from both sides.

[0030] Working principle: The workpiece is suspended on the conveyor chain 106 by hook 107. The support frame 101 supports the servo motor 105 to drive the active gear 104 to mesh with the passive gear ring 103, which drives the sprocket 102 to rotate. The sprocket 102 rotates under the support of the support frame 101, which pushes the conveyor chain 106 to drive the workpiece to move in a cycle through the hook 107. The workpiece passes through the inlet and outlet 204 between the baffles 203 and the machine housing 201. At the same time, the linear motor 302 in the machine housing 201 drives the robotic arm 304 to move back and forth along the linear guide rail 301 through the translation table 303. The robotic arm 304 itself bends and drives the spray head 306 to rotate through the swing frame 305, spraying the workpiece from both sides at the same time. The external purification equipment sucks up the dust scattered in the machine housing 201 through the connecting pipe 206 and the convergence and diversion of the manifold 205. The heavier dust falls into the waste tank 202 under the action of gravity.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A robotic spraying device, comprising two symmetrically arranged cantilever assemblies for simultaneous spraying from both sides, characterized in that: It also includes a feeding assembly for continuous cyclic conveying of suspended workpieces, wherein a housing assembly for enclosing and sucking up dust during spraying is provided in the middle of the feeding assembly, and the cantilever assembly is installed at the top inside the housing assembly; The feeding assembly includes two symmetrically arranged support frames (101), a sprocket (102) is rotatably mounted on the top of the support frame (101), a conveyor chain (106) is installed between the sprockets (102), and a number of hooks (107) are evenly installed on the conveyor chain (106). A drive mechanism for providing rotational power is provided below one of the sprockets (102). The chassis assembly includes a chassis body (201), four baffles (203) are evenly distributed on both sides of the chassis body (201), an inlet and outlet (204) are provided between two baffles (203) on the same side, and a flow guiding mechanism for suctioning dust is provided on the top of the chassis body (201).

2. The robotic spraying device according to claim 1, characterized in that: The cantilever assembly includes a robotic arm (304), the top of which is provided with a translation mechanism for longitudinal reciprocating movement, and the bottom of which is mounted with a swing frame (305), and the middle of which is mounted with a nozzle (306).

3. The robotic spraying device according to claim 2, characterized in that: The translation mechanism includes a translation stage (303) mounted on the top of the robotic arm (304), two linear motors (302) are symmetrically mounted on the translation stage (303), and a linear guide rail (301) is provided in the middle of the linear motors (302). The linear guide rail (301) is fixedly installed on the top surface inside the housing (201).

4. The robotic spraying device according to claim 1, characterized in that: The drive mechanism includes a passive gear ring (103) fixedly mounted under the sprocket (102), a drive gear (104) meshing on one side of the passive gear ring (103), a servo motor (105) disposed under the drive gear (104), and the servo motor (105) fixedly mounted on the support frame (101).

5. The robotic spraying device according to claim 4, characterized in that: The two hooks (107) form a set, and the hooks (107) and the conveyor chain (106) are bolted together.

6. The robotic spraying device according to claim 1, characterized in that: The flow guiding mechanism includes a manifold (205), which is frustoconical in shape. A connecting pipe (206) is provided at the top of the manifold (205). The manifold (205), the connecting pipe (206), and the chassis (201) are welded together.

7. The robotic spraying device according to claim 6, characterized in that: The bottom of the chassis (201) is provided with a waste trough (202).

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