Automatic conveying device for electrostatic spraying of workpieces

Abstract

The invention relates to the field of automatic conveying for electrostatic spraying, and discloses an automatic conveying device for electrostatic spraying of workpieces, the automatic conveying device comprises a conveying part and a limiting part, and a plurality of hanging parts are uniformly and fixedly arranged on the side, away from the limiting part, of the conveying part; for one suspension part, the suspension part comprises a limiting frame, a transmission gear shaft is rotationally clamped to the top end of the interior of the limiting frame, a clamping plate is arranged at the top of the transmission gear shaft, and a transmission rod is rotationally clamped to the portion, located at the bottom end of the transmission gear shaft, of the upper portion of the limiting frame; the conveying component and the hanging component are arranged at the bottom of the limiting component, when the hanging component drives the workpiece to pass through a spraying area, the conveying device can control and drive the workpiece to deflect reversely by a small angle, so that the outer surface of the workpiece is subjected to small-angle reverse spraying, and meanwhile, the production quality of electrostatic spraying of the workpiece is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of automatic conveying for electrostatic spraying, and in particular to an automatic conveying device for electrostatic spraying of workpieces. Background Art

[0002] Electrostatic spraying is a coating method. Its basic principle is to use the principle of corona discharge to make the atomized paint negatively charged under the action of a high-voltage DC electric field, and adsorb on the positively charged substrate surface to discharge. The following is a detailed explanation of electrostatic spraying: Electrostatic spraying uses the grounded object to be coated as the positive electrode, and the oil atomizer (i.e., spray cup or spray plate) connected to high voltage as the negative electrode. Under the high voltage of the high-voltage power supply, an electrostatic field is formed between the end of the spray gun (or spray plate, spray cup) and the workpiece. Corona discharge is generated at the negative electrode, making the sprayed oil mist negatively charged. Under the action of the electrostatic field, the charged particles are efficiently and evenly adsorbed onto the workpiece passing through along the direction of the electric line, presenting a unique "hugging effect".

[0003] When electrostatic spraying is performed on a workpiece, a conveying device is required, and the electrostatic spraying conveying device is an indispensable part of the electrostatic spraying process. It is mainly used to convey the workpiece to be sprayed to the spraying area and convey it out of the system after the spraying is completed. However, the existing electrostatic spraying conveying device will transport the workpiece during use, and when the workpiece passes through the tooth plate, it will drive the workpiece to rotate, so that the electrostatic spray head sprays the workpiece in a circular manner;

[0004] However, when electrostatic spraying is performed on workpieces with many grooves on the outer surface, the workpiece will rotate on its own when it is conveyed through the toothed plate. If the workpiece with grooves and the workpiece with a smoother outer surface are driven by the same conveying device, the workpiece with grooves cannot be deflected in the opposite direction at a small angle so that the outer surface is sprayed in the opposite direction, which will result in the inability to evenly spray the inside of the grooves on the outer surface, thereby failing to guarantee the spraying quality of the workpiece and therefore failing to meet the production quality requirements. Summary of the invention

[0005] The purpose of the present invention is to provide an automated conveying device for electrostatic spraying of workpieces to solve the following technical problem: how to enable the automated conveying device for electrostatic spraying of workpieces to control the reverse small-angle deflection of the workpiece so that the outer surface is reversely sprayed to ensure production quality.

[0006] The object of the present invention can be achieved by the following technical solution: An automatic conveying device for electrostatic spraying of workpieces, comprising: a conveying component and a limiting component, wherein a plurality of suspension components are evenly fixedly arranged on one side of the conveying component away from the limiting component;

[0007] For one of the suspension components, the suspension component comprises:

[0008] The suspension component comprises a limit frame, the top end of the limit frame is rotatably connected to a transmission gear shaft, a clamping plate is provided on the top of the transmission gear shaft, and a transmission rod is rotatably connected to the upper part of the limit frame and located at the bottom end of the transmission gear shaft;

[0009] The bottom end of the transmission gear shaft and the middle part of the transmission rod are both provided with bevel gears, the bottom center of the transmission gear shaft is rotatably clamped with a connecting rod, the top of the connecting rod is fixedly connected to a transmission turntable, the upper surface edge of the transmission turntable is evenly provided with rotating teeth, the bottom end of the connecting rod is fixedly connected with a hook, a double-tooth transmission block is fixedly installed on the outer surface of one end of the transmission rod, and a four-tooth transmission block is provided at the other end of the transmission rod;

[0010] The limiting component includes a limiting guide rail and a rack arranged on the limiting guide rail, the transmission gear shaft is meshed with the rack, and the conveying component is slidably connected with the limiting guide rail.

[0011] As a preferred solution of the present invention: the limiting component further comprises a limiting slide groove, a cross chain clamp wheel and a cross chain connecting plate provided at the bottom of the limiting guide rail;

[0012] The limiting slide groove is arranged at the bottom of the limiting guide rail, the cross chain clamping wheel is slidably clamped in the interior of the limiting slide groove, and the cross chain connecting plate is rotatably clamped in the outer surface of the cross chain clamping wheel.

[0013] As a preferred solution of the present invention: the conveying component includes a conveying cross frame, one end face of the conveying cross frame is provided with a limiting slot, the bottom surface of the conveying cross frame is evenly provided with buckle blocks, and the outer surfaces of the two end edges of the conveying cross frame are fixedly installed with a driving motor, and one end of the driving motor is fixedly connected with a driving gear.

[0014] As a preferred solution of the present invention: the conveying cross frame is slidably engaged with the outer surface of the cross chain clamp wheel through a limiting clamping groove, the sides of the conveying cross frame are evenly connected with fastening screws, and both sides of the bottom surface of the limiting guide rail are provided with tooth grooves, and the driving motor is engaged with the tooth grooves at the bottom of the limiting guide rail through a driving gear.

[0015] As a preferred solution of the present invention: the transmission gear shaft is rotatably engaged with the bottom center of the buckle block through the top clamping plate.

[0016] As a preferred solution of the present invention: the transmission gear shaft is rotatably meshed with the middle part of the transmission rod through a bevel gear, and the transmission rod is meshed with the transmission turntable through a four-tooth transmission block and a double-tooth transmission block at both ends.

[0017] As a preferred solution of the present invention: the double-tooth transmission block and the four-tooth transmission block are arranged in opposite directions on the outer surface of the transmission rod, and the top of the limit frame is fixedly connected to the bottom surface of the conveying horizontal frame.

[0018] Beneficial effects of the present invention:

[0019] (1) The present invention sets the number of teeth of the double-tooth transmission block and the four-tooth transmission block at both ends of the transmission rod to be doubled, so as to ensure that after the workpiece is deflected in the forward direction, it can also be deflected in the reverse direction at a small angle, thereby providing a spraying angle for the electrostatic spraying of the groove on the outer surface of the workpiece, and at the same time, it can achieve the effect of overlapping spraying on the outer surface of the workpiece, so that the outer surface of the workpiece can be sprayed multiple times, thereby ensuring the spraying quality;

[0020] (2) The present invention arranges a conveying component and a hanging component at the bottom of the limiting component, so that when the hanging component drives the workpiece through the spraying area, the conveying device can control the workpiece to deflect in the reverse direction at a small angle, thereby performing reverse spraying on the outer surface of the workpiece at a small angle, while ensuring the production quality of the electrostatic spraying of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of an automated conveying device for electrostatic spraying of workpieces;

[0023] Figure 2 It is a schematic diagram of the structure of the right side of the suspension component;

[0024] Figure 3 It is a schematic diagram of the structure on the left side of the suspension component;

[0025] Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 5 It is a schematic diagram of the structure of the conveying component;

[0027] Figure 6 It is a schematic diagram of the structure of the limiting component.

[0028] Description of the drawings: 1. Suspension component; 2. Conveying component; 3. Limiting component; 11. Connecting rod; 12. Limiting frame; 13. Transmission gear shaft; 14. Rotating gear; 15. Transmission rod; 16. Double-tooth transmission block; 17. Snap-on plate; 18. Transmission turntable; 19. Hook; 110. Four-tooth transmission block; 111. Bevel gear; 21. Driving motor; 22. Limiting slot; 23. Conveying cross frame; 24. Snap-on block; 25. Driving gear; 31. Rack; 32. Cross chain clamp wheel; 33. Limiting slide groove; 34. Limiting guide rail; 35. Cross chain connecting plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 6 As shown, the present invention is an automatic conveying device for electrostatic spraying of workpieces, comprising: a conveying component 2 and a limiting component 3, wherein a plurality of suspension components 1 are evenly fixedly arranged on one side of the conveying component 2 away from the limiting component 3;

[0031] For a suspension component 1, the suspension component 1 includes:

[0032] The suspension component 1 includes a limit frame 12, the top of the limit frame 12 is rotatably connected to a transmission gear shaft 13, a clamping plate 17 is provided on the top of the transmission gear shaft 13, and a transmission rod 15 is rotatably connected to the upper part of the limit frame 12 and located at the bottom of the transmission gear shaft 13;

[0033] The bottom end of the transmission gear shaft 13 and the middle of the transmission rod 15 are both provided with a bevel gear 111, the bottom center of the transmission gear shaft 13 is rotatably connected with a connecting rod 11, the top of the connecting rod 11 is fixedly connected to a transmission turntable 18, the upper surface edge of the transmission turntable 18 is evenly provided with rotating teeth 14, the bottom end of the connecting rod 11 is fixedly connected with a hook 19, a double-tooth transmission block 16 is fixedly installed on the outer surface of one end of the transmission rod 15, and a four-tooth transmission block 110 is provided at the other end of the transmission rod 15;

[0034] The limiting component 3 includes a limiting guide rail 34 and a rack 31 arranged on the limiting guide rail 34 , the transmission gear shaft 13 is meshed with the rack 31 , and the conveying component 2 is slidably connected to the limiting guide rail 34 .

[0035] The limiting component 3 also includes a limiting sliding groove 33, a cross chain clamp wheel 32 and a cross chain connecting plate 35, which are arranged at the bottom of the limiting guide rail 34;

[0036] The limiting slide groove 33 is provided at the bottom of the limiting guide rail 34 , the cross chain clamp wheel 32 is slidably clamped in the limiting slide groove 33 , and the cross chain connecting plate 35 is rotatably clamped in the outer surface of the cross chain clamp wheel 32 .

[0037] The conveying component 2 includes a conveying cross frame 23, one end surface of which is provided with a limit slot 22, and the bottom surface of the conveying cross frame 23 is evenly provided with buckle blocks 24. The outer surfaces of the two end edges of the conveying cross frame 23 are fixedly installed with a driving motor 21, and one end of the driving motor 21 is fixedly connected to a driving gear 25.

[0038] The conveying cross frame 23 of the present invention is slidably connected to the outer surface of the cross chain card wheel 32 through the limiting card groove 22, so that the conveying cross frame 23 can slide at the bottom of the limiting guide rail 34, so that the workpiece can be conveyed. The side surfaces of the conveying cross frame 23 are evenly connected with fastening screws, which can limit the cross chain card wheel 32 to the inside of the conveying cross frame 23. Tooth grooves are provided on both sides of the bottom surface of the limiting guide rail 34. The driving motor 21 is meshed and engaged with the tooth grooves at the bottom of the limiting guide rail 34 through the driving gear 25. Therefore, when the driving motor 21 drives the driving gear 25 to rotate, it will drive the conveying component 2 to move as a whole at the bottom of the limiting component 3. The transmission gear shaft 13 is rotatably engaged with the bottom center of the buckle block 24 through the top clamping plate 17, which can limit the top of the transmission gear shaft 13 and ensure that the transmission gear shaft 13 can rotate in a circle. The transmission gear shaft 13 is movably meshed and connected with the rack 31, and can rotate synchronously when the transmission gear shaft 13 passes through the rack 31 horizontally.

[0039] The transmission gear shaft 13 of the present invention is rotatably meshed with the middle part of the transmission rod 15 through the bevel gear 111, so that the rotation of the transmission turntable 18 can be controlled by the transmission rod 15, and the rotation of the transmission turntable 18 can drive the workpiece at the bottom to rotate synchronously. The transmission rod 15 is meshed with the transmission turntable 18 through the four-tooth transmission blocks 110 and the double-tooth transmission blocks 16 at both ends, so that the workpiece can be driven to rotate intermittently, and repeated overlapping spraying is realized to ensure uniform electrostatic spraying. The double-tooth transmission block 16 and the four-tooth transmission block 110 are arranged in opposite directions on the outer surface of the transmission rod 15, and can drive the transmission turntable 18 to reciprocate when the transmission rod 15 rotates in a circle. The top of the limit frame 12 is fixedly connected to the bottom surface of the conveying cross frame 23, which can ensure the stability of the limit frame 12.

[0040] The working principle of the present invention is as follows: when the workpiece with grooves on the outer surface is subjected to electrostatic spraying, the workpiece is first hung inside the hook 19 at the bottom of the connecting rod 11, and then the driving motor 21 is started to drive the driving gear 25 at one end to rotate at the bottom of the limiting guide rail 34. Since the driving gear 25 is engaged with the tooth groove at the bottom of the limiting guide rail 34, the conveying cross frame 23 as a whole will be driven by the operation of the driving motor 21, and the cross chain card wheel 32 will move horizontally inside the limiting slide groove 33 until the workpiece hung by the hook 19 is moved to the electrostatic spraying. When the suspension component 1 follows the conveying component 2 into the electrostatic spraying area, the transmission gear shaft 13 will be meshed with the rack 31. As the suspension component 1 moves laterally as a whole, the transmission gear shaft 13 will rotate synchronously. When the transmission gear shaft 13 rotates, it will drive the transmission rod 15 synchronously through the bevel gear 111 at the bottom. When the transmission rod 15 rotates, it will drive the four-tooth transmission block 110 and the double-tooth transmission block 16 at both ends to rotate. When the four-tooth transmission block 110 rotates, it will move the rotating gear 14 meshed at the bottom through the transmission gear. The disk 18 drives the connecting rod 11 to rotate. During the circular rotation of the four-tooth transmission block 110, it will separate from the rotating tooth 14. At the same time, the double-tooth transmission block 16 at the other end of the transmission rod 15 rotates to shift the rotating tooth 14 to rotate in the opposite direction. Since the number of teeth of the four-tooth transmission block 110 is twice that of the double-tooth transmission block 16, after the transmission rod 15 is shifted forward by the four-tooth transmission block 110, the double-tooth transmission block 16 will shift the rotating tooth 14 in the opposite direction, so that after the connecting rod 11 rotates forward, it will deflect in the opposite direction at a small angle to offset half of the forward rotation. Angle, thereby driving the workpiece at the bottom to deflect forward, and then deflect half of it in the reverse direction at a small angle, so that during the spraying process, the electrostatic spraying can evenly spray both sides of the inside of the groove on the outer surface of the workpiece, thereby ensuring the quality of electrostatic spraying. Therefore, by arranging the conveying component 2 and the suspension component 1 at the bottom of the limiting component 3, the suspension component 1 can drive the workpiece through the spraying area, and the conveying device can control the workpiece to deflect in the reverse direction at a small angle, thereby performing reverse spraying on the outer surface of the workpiece at a small angle, while ensuring the production quality of the electrostatic spraying of the workpiece.

[0041] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An automatic conveying device for electrostatic spraying of workpieces, characterized in that; The utility model is composed of a conveying component (2) and a limiting component (3), wherein a plurality of suspension components (1) are evenly and fixedly arranged on a side of the conveying component (2) away from the limiting component (3). The suspension component (1) comprises a limiting frame (12), the inner top end of the limiting frame (12) is rotatably clamped with a transmission gear shaft (13), a clamping plate (17) is provided on the top of the transmission gear shaft (13), and a transmission rod (15) is rotatably clamped at the upper part of the limiting frame (12) and located at the bottom end of the transmission gear shaft (13); The bottom end of the transmission gear shaft (13) and the middle of the transmission rod (15) are both provided with a bevel gear (111); the bottom center of the transmission gear shaft (13) is rotatably clamped with a connecting rod (11); the top of the connecting rod (11) is fixedly connected to a transmission turntable (18); the upper surface edge of the transmission turntable (18) is evenly provided with rotating teeth (14); the bottom end of the connecting rod (11) is fixedly connected with a hook (19); a double-tooth transmission block (16) is fixedly installed on the outer surface of one end of the transmission rod (15); and a four-tooth transmission block (110) is provided at the other end of the transmission rod (15); The limiting component (3) comprises a limiting guide rail (34) and a rack (31) arranged on the limiting guide rail (34); the transmission gear shaft (13) is meshed with the rack (31); and the conveying component (2) is slidably connected to the limiting guide rail (34).

2. The automatic conveying device for electrostatic spraying of workpieces according to claim 1, characterized in that: The limiting component (3) further comprises a limiting sliding groove (33) and a cross chain clamping wheel (32) and a cross chain connecting plate (35) which are arranged at the bottom of the limiting guide rail (34); The limiting slide groove (33) is provided at the bottom of the limiting guide rail (34), the cross chain clamp wheel (32) is slidably clamped inside the limiting slide groove (33), and the cross chain connecting plate (35) is rotatably clamped on the outer surface of the cross chain clamp wheel (32).

3. The automatic conveying device for electrostatic spraying of workpieces according to claim 2 is characterized in that: The conveying component (2) comprises a conveying cross frame (23), one end surface of the conveying cross frame (23) is provided with a limit slot (22), the bottom surface of the conveying cross frame (23) is evenly provided with buckle blocks (24), the outer surfaces of the two end edges of the conveying cross frame (23) are fixedly mounted with a driving motor (21), and one end of the driving motor (21) is fixedly connected with a driving gear (25).

4. The automatic conveying device for electrostatic spraying of workpieces according to claim 3 is characterized in that: The conveying cross frame (23) is slidably engaged with the outer surface of the cross chain clamp wheel (32) through the limiting clamping groove (22), the side surfaces of the conveying cross frame (23) are evenly connected with fastening screws, the bottom surface of the limiting guide rail (34) is provided with tooth grooves on both sides, and the driving motor (21) is engaged with the tooth grooves at the bottom of the limiting guide rail (34) through the driving gear (25).

5. The automatic conveying device for electrostatic spraying of workpieces according to claim 4, characterized in that: The transmission gear shaft (13) is rotatably engaged with the bottom center of the buckle block (24) through a top clamping plate (17).

6. The automatic conveying device for electrostatic spraying of workpieces according to claim 5, characterized in that: The transmission gear shaft (13) is rotatably meshed with the middle of the transmission rod (15) via a bevel gear (111), and the transmission rod (15) is meshed with the transmission rotating disk (18) via a four-tooth transmission block (110) and a double-tooth transmission block (16) at both ends.

7. The automatic conveying device for electrostatic spraying of workpieces according to claim 6, characterized in that: The double-tooth transmission block (16) and the four-tooth transmission block (110) are arranged in opposite directions on the outer surface of the transmission rod (15), and the top of the limiting frame (12) is fixedly connected to the bottom surface of the conveying horizontal frame (23).

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