Batch paint spraying equipment for automatic production and working method thereof

Abstract

The invention relates to the technical field of paint spraying, and discloses batch paint spraying equipment for automatic production, which comprises a U-shaped bottom frame, a conveyor is mounted at the top of the U-shaped bottom frame, and a U-shaped bracket is mounted in the middle of the top of the conveyor. Workpiece bearing assemblies are installed on the conveying face of the conveyor at equal intervals. According to the batch paint spraying equipment for automatic production, when a workpiece bearing assembly enters a connecting plate, a rack can be engaged with a transmission gear, so that a workpiece located on a bearing disc rotates, the workpiece is in an autorotation state when paint spraying is conducted on the workpiece, the paint spraying area of the workpiece is enlarged, and the paint spraying efficiency is improved. And meanwhile, when the workpiece is subjected to comprehensive paint spraying, the workpiece is in a moving state all the time, but not in a stopped state, the workpiece is subjected to paint spraying operation, and the work efficiency of workpiece paint spraying is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spray painting, and particularly to a batch spray painting device for automated production. Background Art

[0002] The existing spray painting devices on the market can be classified into three types according to the degree of automation: manual spray painting devices, semi-automatic spray painting devices, and fully automatic spray painting devices. An automatic spray painting machine is actually an automatic spray painting machine, and its working principle is a semi-automatic or fully automatic painting device that replaces a person holding a spray gun to disperse the paint into a mist and spray it on the surface of the object to be painted.

[0003] The prior art such as the publication number: CN220514488U discloses a batch spray painting device for automated production, including a spray painting device main body and a device mechanism. The device mechanism includes an intelligent control box, a conveyor belt, a slide rail, a carriage guide rail, and a carriage. The device mechanism is arranged inside the spray painting device main body. This device mechanism controls the carriage to move left and right on the carriage guide rail for spray painting, and at the same time sets the carriage guide rail to move back and forth on the slide rail and sets the interval time for the steel pipe to rotate, so as to achieve uniform spray painting of the product, thereby completing the use of the spray painting device main body.

[0004] In view of the above-mentioned and existing related technologies, the inventor believes that there are often the following defects: when spraying the workpiece, the workpiece is sprayed when passing through the inside of the outer shell. At this time, the workpiece needs to pause and then the movement of the spray head is controlled to achieve uniform spraying of the workpiece, and the efficiency is relatively low. Summary of the Invention

[0005] In view of the above-mentioned problem that when spraying the workpiece, the workpiece is sprayed when passing through the inside of the outer shell. At this time, the workpiece needs to pause and then the movement of the spray head is controlled to achieve uniform spraying of the workpiece, and the efficiency is relatively low, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a batch spray painting device for automated production, and its purpose is: when the workpiece passes through the inside of the spray painting chamber, uniform spray painting operation can be carried out without stopping.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: An automated production batch painting device, including a conveyor, a U-shaped bracket is installed at the middle of the top of the conveyor, and workpiece carrying components are installed at equal intervals on the conveying surface of the conveyor. A painting component is installed at the rear side inside the U-shaped bracket; the workpiece carrying component includes a connecting plate, a rotating column is rotatably installed at the top of the connecting plate through a bearing seat, a bearing plate is arranged at the top of the rotating column, a transmission gear is sleeved on the outer wall of the rotating column near the upper side, and at least two convex strips are arranged at equal intervals at the bottom of the rear side of the inner wall of the U-shaped bracket, and a rack meshing with the transmission gear is arranged between the convex strips.

[0008] As a preferred solution of the automated production batch painting device of the present invention, wherein: a positioning rod is detachably installed at the center of the top of the bearing plate, a threaded hole is opened at the center of the top of the bearing plate, and an external threaded rod adapted to the threaded hole is arranged at the bottom of the positioning rod.

[0009] As a preferred solution of the automated production batch painting device of the present invention, wherein: the painting component includes a flow equalizing pipe, a discharge port is opened at the bottom of the flow equalizing pipe, a painting pipe is arranged at the discharge port, and a spray head is installed at the discharge port on the front surface of the painting pipe.

[0010] As a preferred solution of the automated production batch painting device of the present invention, wherein: guide columns are arranged on both sides of the top of the inner wall of the U-shaped bracket, sliders are arranged on both sides of the flow equalizing pipe, and sliding holes adapted to the guide columns are opened at the tops of the sliders. Springs are sleeved on the outer wall surfaces of the guide columns and below the sliders.

[0011] As a preferred solution of the automated production batch painting device of the present invention, wherein: motor brackets are arranged on both sides of the top of the inner wall of the U-shaped bracket, a driving motor is installed inside the motor brackets, and a cam block is installed at the driving end of the driving motor.

[0012] As a preferred solution of the automated production batch painting device of the present invention, wherein: a paint inlet pipe is inserted and installed at the rear side of the middle of the top of the U-shaped bracket, and a metal hose is installed between the outlet at the bottom of the paint inlet pipe and the inlet of the flow equalizing pipe.

[0013] As a preferred solution of the automated production batch painting device of the present invention, wherein: a door panel is hingedly installed at the rear side of the U-shaped chassis, and a storage rack is installed inside the U-shaped chassis.

[0014] On the other hand, the present invention also provides a working method for an automated production batch painting device, including: When the workpiece bearing assembly enters the interior of the connecting plate, the rack will engage with the transmission gear. Since the rack is in a fixed state, the rotating column is driven to rotate through the transmission gear, and then the workpiece located on the bearing plate is driven to rotate. When spraying the workpiece, the workpiece is in a state of self-rotation to expand the spraying area of the workpiece.

[0015] Furthermore, a cam block is installed at the driving end of the driving motor within the U-shaped bracket; the rotation of the cam block causes the flow equalizing pipe to first move downward and then reset. When the nozzle is spraying, the driving motor drives the cam block to continuously rotate, and then the nozzle is driven to continuously move up and down reciprocally through the flow equalizing pipe, further expanding the spraying surface on the outer wall surface of the workpiece, and further improving the spraying effect on the workpiece.

[0016] Advantages of the present invention: 1. When the workpiece bearing assembly enters the interior of the connecting plate in the present invention, the rack will engage with the transmission gear. Since the rack is in a fixed state, the rotating column is driven to rotate through the transmission gear, and then the workpiece located on the bearing plate is driven to rotate. When spraying the workpiece, the workpiece is in a state of self-rotation to expand the spraying area of the workpiece, ensuring the comprehensiveness and uniformity of spraying on the workpiece. At the same time, when comprehensively spraying the workpiece, the workpiece is always in a moving state, rather than spraying the workpiece when it is in a stationary state, effectively improving the working efficiency of spraying the workpiece.

[0017] 2. One rotation of the cam block in the present invention causes the flow equalizing pipe to first move downward and then reset. When the nozzle is spraying, the driving motor drives the cam block to continuously rotate, and then the nozzle is driven to continuously move up and down reciprocally through the flow equalizing pipe, further expanding the spraying surface on the outer wall surface of the workpiece, and further improving the spraying effect on the workpiece. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them: Figure 1 is a schematic diagram of the overall structure of an automatic production batch spraying device of the present invention.

[0019] Figure 2 is a schematic diagram of the structure of the workpiece bearing assembly of an automatic production batch spraying device of the present invention.

[0020] Figure 3Schematic cross-sectional structure diagram of the U-shaped bracket of a batch painting device for automated production of the present invention.

[0021] Figure 4 Schematic structure diagram of the painting component of a batch painting device for automated production of the present invention.

[0022] Explanation of reference numerals: 1, U-shaped chassis; 2, conveyor; 3, U-shaped bracket; 4, workpiece carrying component; 41, connecting plate; 42, rotating column; 43, transmission gear; 44, carrying plate; 45, positioning rod; 46, rib; 47, rack; 5, painting component; 51, flow equalizing pipe; 52, slider; 53, spring; 54, guide column; 55, painting pipe; 56, spray head; 57, metal hose; 58, paint inlet pipe; 59, motor frame; 510, cam block; 511, drive motor. Detailed implementation manners

[0023] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0024] As described in the background art, when the existing spraying equipment sprays paint on a workpiece, the workpiece is sprayed when passing through the interior of the outer housing. At this time, the workpiece needs to pause moving, and then the movement of the spray head is controlled to achieve uniform spraying of the workpiece.

[0025] In the prior art, there is also a motor assembled in the workpiece carrying component to drive the workpiece to rotate. However, in the actual operation process, it is very difficult to make the synchronization of each workpiece carrying component consistent in this control method, and a motor needs to be installed on each workpiece carrying component, resulting in high costs. And during the actual use by the inventor, it is not desired that the motor still drives the workpiece to rotate after the painting is completed, which will affect the adhesion effect of the paint. At this time, corresponding control needs to be added to make the workpiece carrying component stop rotating after leaving the painting component, and this method makes the control very complex.

[0026] Based on the above analysis, it is expected to design a batch painting device for automated production mainly based on mechanical actions and with simple electronic control, which can ensure the consistency of spraying a large number of workpieces.

[0027] Referring to Figure 1 , as an embodiment of the present invention, it provides a batch painting device for automated production. Such a batch painting device for automated production includes a U-shaped chassis 1. A conveyor 2 is installed on the top of the U-shaped chassis 1. A U-shaped bracket 3 is installed at the middle part of the top of the conveyor 2. Workpiece carrying components 4 are installed at equal intervals on the conveying surface of the conveyor 2. A painting component 5 is installed at the rear side inside the U-shaped bracket 3; Please refer to Figure 2, the workpiece bearing assembly 4 includes a connecting plate 41. The top of the connecting plate 41 is rotatably installed with a rotating column 42 through a bearing seat. The top of the rotating column 42 is provided with a bearing plate 44. A transmission gear 43 is sleeved on the upper side of the outer wall of the rotating column 42. At least two convex strips 46 are equidistantly arranged at the bottom of the rear side of the inner wall of the U-shaped bracket 3. A rack 47 meshing with the transmission gear 43 is arranged between at least two convex strips 46. When the workpiece bearing assembly 4 enters the inside of the connecting plate 41, the rack 47 will mesh with the transmission gear 43. Since the rack 47 is in a fixed state, the rotating column 42 is driven to rotate through the transmission gear 43, and then the workpiece located on the bearing plate 44 is driven to rotate, realizing that when the workpiece is being painted, the workpiece is in a self-rotating state, so as to expand the painting area of the workpiece and ensure the comprehensiveness and uniformity of painting the workpiece. At the same time, when the workpiece is painted comprehensively, the workpiece is always in a moving state, rather than painting the workpiece when the workpiece is in a stationary state, effectively improving the working efficiency of painting the workpiece.

[0028] Continue to refer to Figure 2 , a positioning rod 45 is detachably installed at the center of the top of the bearing plate 44. A threaded hole is opened at the center of the top of the bearing plate 44, and an external threaded rod adapted to the threaded hole is provided at the bottom of the positioning rod 45. If there is a concave hole at the bottom of the workpiece, the positioning rod 45 is installed on the top of the bearing plate 44 by screwing the external threaded rod into the threaded hole on the bearing plate 44, so that the positioning rod 45 enters the concave hole at the bottom of the workpiece, improving the limiting effect on the workpiece.

[0029] The painting assembly 5 includes a flow equalizing pipe 51. The middle of the top of the flow equalizing pipe 51 is provided with a feed port. A discharge port is opened at the bottom of the flow equalizing pipe 51, and a painting pipe 55 is arranged at the discharge port. A spray head 56 is installed at the discharge port on the front of the painting pipe 55.

[0030] During use, the workpiece is placed on the top of the bearing plate 44. The conveyor 2 drives the workpiece bearing assembly 4 to move, so that the workpiece on the workpiece bearing assembly 4 is driven to pass through the inside of the U-shaped bracket 3. The paint enters the inside of the flow equalizing pipe 51 through the paint inlet pipe 58 and the metal hose 57, and then flows into the inside of each painting pipe 55. The paint is sprayed out through the spray head 56, and the paint will be directly sprayed onto the outer wall surface of the workpiece.

[0031] Refer to Figures 1 to 4 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is: Guide columns 54 are arranged on both sides of the top of the inner wall of the U-shaped bracket 3, and the bottom ends of the guide columns 54 are arranged on the tops of the convex strips 46. Sliders 52 are arranged on both sides of the flow equalizing pipe 51, and sliding holes adapted to the guide columns 54 are opened at the tops of the sliders 52. A spring 53 is sleeved on the outer wall surface of the guide column 54 and below the slider 52.

[0032] On both sides of the top of the inner wall of the U-shaped bracket 3, there are motor brackets 59 installed. Inside the motor bracket 59, a driving motor 511 is installed. At the driving end of the driving motor 511, a cam block 510 is installed, and the driving motor 511 and the cam block 510 are eccentrically connected.

[0033] The driving motor 511 drives the cam block 510 to rotate. When the cam block 510 rotates, when the cam block 510 rotates in the first half turn, its top presses the flow equalizing pipe 51 to move downward. At this time, the slider 52 compresses the spring 53. When the cam block 510 rotates in the second half turn, its top gradually releases the downward pressure on the flow equalizing pipe 51. Under the elastic reset action of the spring 53, the flow equalizing pipe 51 moves upward. Then, one rotation of the cam block 510 causes the flow equalizing pipe 51 to move downward first and then reset. When the spray head 56 sprays, the driving motor 511 drives the cam block 510 to rotate continuously, and it will drive the spray head 56 to move up and down reciprocally continuously through the flow equalizing pipe 51, further expanding the spraying surface of the spray head 56 on the outer wall surface of the workpiece, and further improving the spraying effect on the workpiece. Although the above process requires controlling the driving motor, it is only limited to starting or closing, and does not involve sensors detecting the workpiece, so the structure is very simple and the possibility of failure is also reduced.

[0034] At the middle and rear side of the top of the U-shaped bracket 3, a paint inlet pipe 58 is inserted and installed. A metal hose 57 is installed between the outlet at the bottom of the paint inlet pipe 58 and the inlet of the flow equalizing pipe 51.

[0035] A door panel is hingedly installed at the rear side of the U-shaped bottom frame 1, and a storage rack is installed inside the U-shaped bottom frame 1.

[0036] During the use process, when the spray head 56 sprays the workpiece, the driving motor 511 drives the cam block 510 to rotate. When the cam block 510 rotates, when the cam block 510 rotates in the first half turn, its top presses the flow equalizing pipe 51 to move downward. At this time, the slider 52 compresses the spring 53. When the cam block 510 rotates in the second half turn, its top gradually releases the downward pressure on the flow equalizing pipe 51. Under the elastic reset action of the spring 53, the flow equalizing pipe 51 moves upward. Then, one rotation of the cam block 510 causes the flow equalizing pipe 51 to move downward first and then reset.

[0037] The remaining structure is the same as that of Embodiment 1.

[0038] The present embodiment also provides a working method of the batch painting equipment for automated production, including: when the workpiece carrying assembly enters the interior of the connecting plate, the rack will mesh with the transmission gear, and the rack will be in a fixed state, and the transmission gear will drive the rotating column to rotate, thereby driving the workpiece located on the carrying plate to rotate, so that when the workpiece is being painted, the workpiece is in a state of self-rotation to expand the painting area of ​​the workpiece.

[0039] In some embodiments, a cam block (510) is installed at the driving end of the driving motor (511) in the U-shaped bracket (3); the rotation of the cam block causes the flow equalizing tube to move downward first and then reset. When the nozzle is spraying, the driving motor drives the cam block to rotate continuously, which drives the nozzle to move up and down continuously through the flow equalizing tube, thereby further expanding the spraying surface of the nozzle on the outer wall of the workpiece, thereby further improving the spraying effect on the workpiece.

[0040] This batch painting equipment can realize automatic spraying for large quantities of workpieces. As long as the workpieces are transported by the conveyor, the overall process can realize automatic continuous spraying without adding the electronic control part, and the consistency of spraying is very high. This equipment reduces the complexity of spraying as much as possible and adopts a simple structure to realize automatic and continuous spraying operations. Such a simple and ingenious structure is currently impossible to achieve automatic spraying by relying on electronic control, and the service life and cost of this equipment are obviously due to electronic control spraying, which can fully meet the needs of batch spraying. After comparative experiments, this equipment was used to spray paint 100 cylindrical workpieces, the conveyor speed was 0.5m / s, and the paint uniformity test showed that the standard deviation of the paint film thickness was 4.2μm, while the standard deviation of the traditional pause spraying was 16.8μm; the average spraying time of a single piece was reduced from 12 seconds of the traditional method to 7 seconds, and the efficiency was increased by 41.7%.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A batch painting equipment for automated production, comprising a conveyor (2), wherein a U-shaped bracket (3) is installed at the middle of the top of the conveyor (2), characterized in that: The conveying surface of the conveyor (2) is provided with workpiece bearing assemblies (4) at equal intervals, and a paint spraying assembly (5) is installed on the rear side of the U-shaped bracket (3); the workpiece bearing assembly (4) comprises a connecting plate (41), a rotating column (42) is rotatably mounted on the top of the connecting plate (41) through a bearing seat, a bearing plate (44) is arranged on the top of the rotating column (42), a transmission gear (43) is sleeved on the upper side of the outer wall of the rotating column (42), and at least two convex strips (46) are arranged at equal intervals on the bottom of the rear side of the inner wall of the U-shaped bracket (3), and a rack (47) meshing with the transmission gear (43) is arranged between each of the convex strips (46).

2. The batch painting equipment for automated production according to claim 1 is characterized in that: A positioning rod (45) is detachably mounted at the center of the top of the carrier plate (44), a threaded hole is provided at the center of the top of the carrier plate (44), and an external threaded rod matching the threaded hole is provided at the bottom of the positioning rod (45).

3. The batch painting equipment for automated production according to claim 2 is characterized in that: The paint spraying assembly (5) comprises a flow balancing tube (51), a discharge port is provided at the bottom of the flow balancing tube (51), a paint spraying tube (55) is provided at the discharge port, and a spray head (56) is installed at the discharge port on the front of the paint spraying tube (55).

4. The batch painting equipment for automated production according to claim 3 is characterized in that: Guide columns (54) are provided on both sides of the top of the inner wall of the U-shaped bracket (3), and sliders (52) are provided on both sides of the flow equalizing tube (51), and a sliding hole matching the guide columns (54) is provided on the top of the slider (52), and a spring (53) is sleeved on the outer wall surface of the guide column (54) and located below the slider (52).

5. The batch painting equipment for automated production according to claim 4 is characterized in that: Motor frames (59) are provided on both sides of the top of the inner wall of the U-shaped bracket (3), a driving motor (511) is installed inside the motor frame (59), and a cam block (510) is installed at the driving end of the driving motor (511).

6. The batch painting equipment for automated production according to claim 5 is characterized in that: A paint inlet pipe (58) is inserted and installed at the rear side of the middle of the top of the U-shaped bracket (3), and a metal hose (57) is installed between the outlet at the bottom of the paint inlet pipe (58) and the feed port of the flow equalizing pipe (51).

7. The batch painting equipment for automated production according to claim 6 is characterized in that: A door panel is hingedly mounted on the rear side of the U-shaped base frame (1), and a storage rack is mounted inside the U-shaped base frame (1).

8. A method for operating the batch painting equipment for automated production as claimed in claim 1, characterized in that: include: When the workpiece carrying assembly enters the interior of the connecting plate, the rack will mesh with the transmission gear. When the rack is in a fixed state, the transmission gear will drive the rotating column to rotate, and then drive the workpiece on the carrying plate to rotate. When the workpiece is painted, the workpiece is in a state of self-rotation to expand the paint area of ​​the workpiece.

9. The working method according to claim 8, characterized in that: A cam block (510) is installed at the driving end of the driving motor (511) in the U-shaped bracket (3); the rotation of the cam block causes the flow equalizing tube to move downward first and then reset. When the nozzle is spraying, the driving motor drives the cam block to rotate continuously, which drives the nozzle to continuously move up and down reciprocatingly through the flow equalizing tube, thereby expanding the spraying surface of the nozzle on the outer wall of the workpiece.

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