Automobile ornament spraying device, spraying production line and spraying method of automobile ornament spraying production line

Abstract

The invention discloses an automobile ornament spraying device, a spraying production line and a spraying method thereof, relates to the technical field of automobile ornament production, and solves the problems of high paint consumption and poor spraying uniformity of an existing automobile ornament spraying mode. The spraying device comprises a cross beam, wherein two ends of the cross beam are respectively provided with a spraying position; a transposition rotation driving mechanism; two positioning seats; two spraying rotation driving mechanisms; and a nozzle. The spraying production line comprises an automobile ornament spraying device and further comprises a conveying area, a material waiting area, a spraying area, a transferring area and a drying area. A conveying belt is arranged in the conveying area; the material waiting area is provided with a material receiving platform; a multi-axis robot is arranged in the spraying area; and a transfer robot is arranged in the transfer area. According to the production line, the automobile ornaments can be sprayed in multiple times and at multiple angles, and due to spraying in a small range, the paint consumption is small, the uniformity can be guaranteed, the feeding and discharging time is saved, and the production efficiency of the automobile ornaments is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive trim manufacturing technology, and in particular to an automotive trim painting device, a painting production line, and a painting method thereof. Background Technology

[0002] Automotive trim serves to decorate and beautify vehicles, and its quality directly impacts the car's interior and exterior image. Trim components should be selected strategically based on the vehicle's specific needs, adhering to principles of aesthetics, harmony, practicality, and safety to ensure optimal decorative effects. The production and processing of automotive trim components involves using spray painting equipment to apply paint to their surfaces to enhance their appearance.

[0003] In existing technology, multiple automotive trim parts are arranged in a row on a conveyor belt. The conveyor belt has multiple support rods, and the trim parts are inserted into the tops of the support rods. The middle of the support rods is rotatably connected to a fixed plate via bearings. The conveyor belt, via a chain or belt, drives the fixed plate backward, thus conveying multiple trim parts backward together. Gears are installed at the lower ends of the support rods, and a rack is installed at the bottom of the conveyor belt. The gears mesh with each other, and as the trim parts are conveyed backward, the gears drive the support rods to rotate, thereby rotating the trim parts. Multiple painting devices are distributed along the conveyor belt on both sides along the conveying direction. As the trim parts are conveyed backward and rotated, all the painting devices simultaneously spray paint onto the trim parts.

[0004] This spraying method has the following drawbacks: First, the spraying device uses a large-area spraying method, which consumes a large amount of paint, thereby increasing the production cost of automotive trim parts; second, there is a certain distance between two adjacent spraying devices, and when the automotive trim parts pass through the area of ​​this distance, the trim parts themselves are still rotating, but the trim parts cannot be sprayed with paint when they reach this area, or the amount of paint sprayed is too small, which will result in the paint being sprayed unevenly on the surface of the automotive trim parts. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems by designing an automotive trim spraying device, a spraying production line, and a spraying method, which solves the problems of high paint consumption and poor spraying uniformity in existing automotive trim spraying methods.

[0006] The technical solution of the present invention to achieve the above objectives is an automotive trim spraying device, comprising: A crossbeam, each end of which has a spraying position; The rotating drive mechanism is used to drive the crossbeam to rotate and switch the positions of the two spraying positions; Two positioning seats are respectively set on two spraying positions and rotatably connected to the crossbeam. The positioning seats are provided with at least three first support columns for stabilizing and supporting the positioning fixture. The support seats are inserted into the bottom of the positioning fixture. The upper part of the positioning fixture has at least two positioning rods for supporting automotive trim parts. The bottom of the automotive trim parts has slots that are adapted to the top cross-sectional shape of the positioning rods. The positioning rods are inserted into the slots and cannot rotate relative to each other. The bottom of the positioning fixture is provided with at least three first plug-in members. The first plug-in members have insertion holes, and the first support columns are inserted into the insertion holes. Two spraying rotary drive mechanisms are respectively located at the bottom of both ends of the crossbeam, and are used to drive the two positioning seats to rotate. The nozzle is capable of moving to multiple positions and angles, and is configured to stop at multiple positions and switch between multiple positions. When the nozzle is stopped at one of the positions, it is configured to perform at least one round of spraying on selected positions of all automotive trim surfaces on a rotating locating seat.

[0007] In one implementation scheme, motor mounting bases are provided at both ends of the bottom of the crossbeam, a motor is mounted on the motor mounting base, a first gear is provided on the output shaft of the motor, a rotating shaft is provided at the bottom of the positioning base, and the output shaft of the motor and the rotating shaft are connected by a transmission mechanism.

[0008] In one embodiment, the output shaft of the motor is provided with a first gear, and the lower end of the rotating shaft is provided with a second gear, wherein the first gear and the second gear mesh.

[0009] In one implementation scheme, the output shaft of the motor is provided with a first synchronous pulley, and the lower end of the rotating shaft is provided with a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by a synchronous pulley drive.

[0010] In one embodiment, a multi-axis robot is provided on one side of the crossbeam, the spray nozzle is mounted on the multi-axis robot, and the multi-axis robot is close to one of the spraying positions.

[0011] The present invention also proposes an automotive trim painting production line, including the automotive trim painting device as described above, and further including a conveying area, a waiting area, a painting area, a transfer area and a drying area; The conveying area is equipped with a conveyor belt, which passes through the transfer area and the drying area in sequence. The conveyor belt is equipped with a support device for carrying the positioning fixture. The waiting area is equipped with a receiving platform, which has at least two workstations for placing positioning fixtures. Each workstation is equipped with at least three second support columns for interlocking and positioning with the bottom of the positioning fixture. The spraying area is equipped with a multi-axis robot, and the spraying positions at both ends of the crossbeam can rotate and switch between the waiting area and the spraying area; The transfer area is equipped with a transfer robot, which is used to transfer positioning fixtures containing finished or unfinished automotive trim parts between painting positions away from the multi-axis robot on the conveyor belt, receiving platform and crossbeam. The drying area is equipped with a drying room.

[0012] As one implementation, the conveyor belt is provided with a blocking mechanism in the conveying direction for intercepting positioning fixtures containing unfinished automotive trim parts.

[0013] In one embodiment, the bottom of the positioning fixture is provided with at least three second connectors, each having a socket, and the second support post is inserted into the socket.

[0014] This invention also proposes a method for spraying automotive trim parts, comprising: S1. Arrange multiple automotive trim pieces evenly in a ring shape; S2. Control multiple automotive trim pieces to rotate around the center of a ring, and spray at least one round of paint on selected areas of all automotive trim piece surfaces during the rotation process; S3. Switch the spraying position and spray at least one round of paint on selected different parts of all automotive trim surfaces.

[0015] Its advantages over existing technologies are: This invention improves upon existing automotive trim spraying methods by arranging multiple automotive trim parts evenly in a ring and then controlling the multiple automotive trim parts to rotate around the center of the ring. The spray head can stop at multiple positions and switch between multiple positions. When the spray head stops at one position, it can spray at least one round on a selected position on the surface of all automotive trim parts on the rotating positioning seat. After completing the spraying of one position, the spray head is switched to spray other positions, and the above operation is repeated to spray other selected parts on the surface of the automotive trim parts. The automotive trim parts are sprayed multiple times and from multiple angles. Because the spraying is done in a small area, the paint consumption is small.

[0016] The two spraying positions of the spraying device can be switched by a rotating drive mechanism. When one spraying position is loading and unloading materials, the other spraying position is performing spraying operations, thereby saving loading time and improving the production efficiency of automotive trim parts.

[0017] A positioning fixture can simultaneously position at least two automotive trim pieces. The bottom of each trim piece has a corresponding slot for a positioning rod on the fixture. The trim piece is inserted into the positioning rod, and there is no relative rotation between them. A positioning seat is provided at each painting position. The positioning fixture is inserted into the first support column of the positioning seat. The first support column provides stable support and positioning for the positioning fixture. During painting, the nozzle is brought close to the trim piece. Then, the painting rotation drive mechanism at the bottom of the crossbeam controls the positioning seat to rotate. The positioning fixture rotates along with the positioning seat, and the trim piece on the positioning fixture rotates around the center of the fixture. The nozzle then approaches the trim piece and stops at a corresponding position in a certain direction. During the rotation, at least one round of painting is performed on the trim piece. The nozzle stops at different positions in multiple directions on the trim piece, spraying it from multiple angles. This significantly reduces paint consumption. Furthermore, because the nozzle sprays the trim piece multiple times from multiple angles, uniformity is ensured.

[0018] This painting production line can automatically complete the loading, unloading, painting, and baking of automotive trim parts, greatly improving the production efficiency of automotive trim parts. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the automotive trim spraying device in Example 1; Figure 2 This is a structural schematic diagram of the crossbeam and other structures installed on the crossbeam in Example 1; Figure 3 This is a cross-sectional structural diagram of the beam in Example 1; Figure 4 This is a schematic diagram of the positioning fixture in Example 1; Figure 5 This is a structural schematic diagram of the positioning fixture from another perspective in Example 1; Figure 6 This is a schematic diagram of the automotive trim painting production line in Example 2; Figure 7 This is a schematic diagram of the material receiving platform in Example 2; Figure 8 This is a schematic diagram of the automotive trim painting production line in Example 3; Figure 9 This is a schematic diagram of the material receiving platform in Example 3.

[0020] In the diagram, 1. Crossbeam; 2. Servo motor; 3. Positioning seat; 31. First support column; 4. Motor; 5. First gear; 6. Positioning fixture; 61. Rectangular frame; 62. Ring; 63. Positioning rod; 64. First connector; 65. Second connector; 66. Connecting rod; 7. Automotive trim; 8. Multi-axis robot; 81. Nozzle; 9. Transfer robot; 10. Conveyor belt; 11. Baking oven; 12. Receiving platform; 121. Second support column; 122. Support leg; 13. Connecting plate; 14. Surface bearing; 15. Positioning base; 16. Rotating shaft. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Example 1 See Figure 1 The present invention provides an automotive trim spraying device, which mainly includes a crossbeam 1, a shifting rotary drive mechanism, a spraying rotary drive mechanism, a multi-axis robot 8, a spray nozzle 81, a positioning seat 3 and other components. The crossbeam 1 is horizontally arranged, and there is a spraying position at each end of the crossbeam 1, one of which is used for spraying and the other is used for waiting for loading and unloading.

[0023] See Figure 2 The rotation drive mechanism mainly uses a high-power servo motor 2, which can be mounted on a motor base (not shown in the figure). The output shaft of the servo motor 2 can be connected to the middle part of the bottom of the crossbeam 1 through a connecting structure. The servo motor 2 outputs sufficient power to control the rotation of the crossbeam 1 to switch the positions of the two spraying positions.

[0024] like Figure 1 As shown, the multi-axis robot 8 is located on one side of one of the spraying positions on the crossbeam 1, and the nozzle 81 is mounted on the multi-axis robot 8. The multi-axis robot 8 controls the nozzle 81 to move in multiple positions and at multiple angles.

[0025] See Figure 3 Each spraying area is equipped with a positioning seat 3 for positioning the positioning fixture 6. The bottom of the positioning seat 3 is equipped with a rotating shaft 16, which is rotatably connected to the crossbeam 1 via a bearing. A flat bearing 14 can be installed between the positioning seat 3 and the crossbeam 1 to ensure stable rotation of the positioning seat 3.

[0026] The spraying rotary drive mechanism uses a high-speed motor 4. There are two motors 4, which correspond to two positioning seats 3 respectively, and are used to control the rotation of the positioning seats 3.

[0027] See also Figure 3 In this embodiment, the motor 4 is fixedly mounted on a motor mounting base at the bottom of the crossbeam 1. The crossbeam 1 has mounting spaces at both ends, and the output shaft of the motor 4 passes through these mounting spaces. A first gear 5 is mounted on the output shaft of the motor 4, and a second gear is mounted at the lower end of the rotating shaft 16. The first gear 5 and the second gear mesh with each other. When the motor 4 operates, it drives the first gear 5 to rotate, which in turn drives the second gear to rotate, thereby causing the rotating shaft 16 and the positioning base 3 to rotate.

[0028] In other embodiments, gear transmission may not be used between the motor 4 and the rotating shaft 16; instead, synchronous belt transmission may be used. A second synchronous pulley is provided at the lower end of the rotating shaft 16, and a first synchronous pulley is provided on the output shaft of the motor 4. The first and second synchronous pulleys are connected by a synchronous belt. When the motor 4 is working, it drives the first synchronous pulley to rotate, and then drives the second synchronous pulley to rotate via the synchronous belt, which in turn drives the rotating shaft 16 and the positioning seat 3 to rotate.

[0029] It is not limited to the two transmission methods mentioned above; other transmission mechanisms can also be used.

[0030] like Figure 2 As shown, in this embodiment, four first support columns 31 are provided on the positioning base 3. The four first support columns 31 are vertically welded to the positioning base 3 and are used to support and position the positioning fixture 6. The four first support columns 31 are respectively distributed at the four corner points of the rectangle.

[0031] See Figure 4 , Figure 5 The positioning fixture 6 is specially designed according to the shape of the product and the convenience of spraying. The positioning fixture 6 consists of two layers: an upper ring 62 and a lower rectangular frame 61. The ring 62 and the rectangular frame 61 are connected by connectors, which are welded to both. The ring 62 is used to support the automotive trim part 7, and the rectangular frame 61 facilitates the robot's gripping of the positioning fixture 6.

[0032] In this embodiment, four first connectors 64 are welded to the bottom of the rectangular frame 61, generally at least three, to provide stable support. The positions of the four first connectors 64 correspond to the four first support columns 31. Each first connector 64 has a blind hole at its bottom. The first support columns 31 can be inserted into these holes.

[0033] When the positioning fixture 6 is placed on the positioning seat 3, the four first support columns 31 will be inserted into the four first connectors 64 at the bottom of the positioning fixture 6 respectively. This can be done in two ways: firstly, to position the positioning fixture 6, and secondly, to provide stable support for the positioning fixture 6, preventing the positioning fixture 6 from being thrown off during the rotation of the positioning seat 3.

[0034] Two intersecting connecting rods 66 are welded to the hollowed-out area in the middle of the rectangular frame 61, and four first connectors 64 are welded to the two connecting rods 66 respectively.

[0035] Four positioning rods 63 are welded onto the ring 62 of the positioning fixture 6. The positioning rods 63 are vertically positioned and evenly distributed along the circumference of the ring 62. During production, a connecting sleeve is formed at the bottom of the automotive trim piece 7. The bottom of the connecting sleeve has a slot, the cross-sectional shape of which matches the cross-sectional shape of the top of the positioning rod 63. Therefore, four automotive trim pieces 7 can be placed on one positioning fixture 6.

[0036] The number of positioning rods 63 can be adjusted according to the volume and size of the automotive trim 7. To improve painting efficiency, at least two are generally required.

[0037] See Figure 4 In this embodiment, the top of the positioning rod 63 is prismatic, so its cross-sectional shape is polygonal. The slot also has a polygonal cross-sectional shape. This prevents the car trim 7 from rotating when inserted into the positioning rod 63. The portion of the positioning rod 63 below the prismatic shape is cylindrical. Therefore, when the car trim 7 is inserted into the top of the positioning rod 63, the portion below the prismatic shape provides support for the car trim 7.

[0038] During the painting operation, four unpainted automotive trim pieces 7 are inserted into the positioning rod 63, and then the positioning fixture 6 is placed on the positioning seat 3 and inserted into the first support column 31. The multi-axis robot 8 controls the nozzle 81 to face the automotive trim piece 7 and approach a specific position on the automotive trim piece 7 to be painted. Simultaneously, it is important to ensure that the nozzle of the positioning fixture 6 does not touch the automotive trim piece 7 as it rotates with the positioning seat 3.

[0039] Motor 4 controls the positioning seat 3 to rotate at high speed, and the four car trim pieces 7 will rotate along the circumference.

[0040] During the rotation of the positioning seat 3, the multi-axis robot 8 can control the nozzle 81 to stop at multiple different positions in the annular area formed by multiple car trim parts rotating around the center. The direction and angle between the nozzle and the car trim part are different at each position, and the spraying area on the car trim part that the nozzle is aimed at is also different at each position. The multi-axis robot 8 can control the nozzle 81 to switch between multiple different positions.

[0041] When the multi-axis robot 8 controls the nozzle 81 to stop at one of the positions of the automotive trim 7, at least one round of spraying can be performed on all the automotive trim 7 during the rotation process. Multiple rounds of spraying can also be performed depending on the spraying requirements. The nozzle 81 atomizes the paint and sprays it onto the surface of the automotive trim 7. After spraying at one position is completed, the multi-axis robot 8 controls the nozzle 81 to switch and stop at another position to continue spraying other areas of the automotive trim 7. This process is repeated, spraying the automotive trim 7 from multiple directions and positions until the paint covers the surface of the automotive trim 7 to be sprayed.

[0042] Another painting position on the crossbeam 1 will hold a positioning fixture 6 containing unpainted automotive trim parts 7. After painting is completed, the servo motor 2 controls the crossbeam 1 to rotate 180°, switching the positions of the positioning fixtures 6 containing the painted and unpainted automotive trim parts 7. The positioning fixture 6 containing the painted automotive trim parts 7 is unloaded and replaced with a new one; the positioning fixture 6 containing the unpainted automotive trim parts 7 continues to repeat the above operation for painting.

[0043] The device can spray paint four automotive trim parts 7 at once. After spraying, it can be rotated and switched to facilitate loading and unloading, thereby improving the spraying efficiency of automotive trim parts 7 and saving paint usage.

[0044] Example 2 like Figure 6 As shown, Embodiment 2 of the present invention proposes an automotive trim painting production line, which mainly includes the following areas: a conveying area, a waiting area, a painting area, a transfer area, and a drying area.

[0045] A conveyor belt 10 is provided in the conveying area for conveying positioning fixtures 6. The positioning fixtures 6 are fully loaded with unpainted or painted automotive trim parts 7. The other end of the conveyor belt 10 extends to the drying area, where an oven 11 is provided. The painted automotive trim parts 7 are conveyed by the conveyor belt 10 into the oven 11 to dry the paint on the surface of the automotive trim parts 7.

[0046] The conveyor belt 10 has multiple positioning bases 15 for supporting the positioning fixture 6, and the positioning method is the same as that of the positioning seat 3.

[0047] The transfer area is located on one side of the conveyor area, and a transfer robot is installed in the transfer area. This transfer robot has multiple moving axes and can transfer the positioning fixture 6, which is fully loaded with unpainted automotive trim parts 7, from the conveyor belt 10 to the waiting area. The specific structure of the transfer robot 9 will not be described in detail here.

[0048] A receiving platform 12 is set up in the waiting area.

[0049] See Figure 7The receiving platform 12 is a frame structure consisting of two parallel square rods connected by a connecting strip in the middle, thus both ends of the receiving platform 12 are open. The receiving platform 12 is mounted on the transfer robot 9 via a connecting plate 13, and the transfer robot 9 controls its axial movement and rotation.

[0050] Two workstations are provided on the receiving platform 12 for placing the positioning fixture 6. The two workstations are located near the two ends of the receiving platform 12. Four second support columns 121 are provided at each workstation and are welded to the receiving platform 12. The four support columns are located at the four corner points of the rectangle. At the same time, four second connectors 65 are also welded to the bottom of the rectangular frame 61 of the positioning fixture 6, and the four second connectors 65 correspond to the four second support columns 121 respectively.

[0051] Each second connector 65 has a blind hole at its bottom. When the positioning fixture 6 is placed on the receiving platform 12, the second support column 121 will engage with the second connector 65 to position and stably support the positioning fixture 6.

[0052] The top of the second support post 121 is tapered so that it can be quickly inserted into the second connector 65.

[0053] like Figure 6 As shown, the automotive trim painting device is located in the painting area. A multi-axis robot 8 is positioned in the painting area, while a crossbeam 1 is located between the painting area and the waiting area. The two painting positions on the crossbeam 1 can rotate and switch positions between the painting area and the waiting area. Loading and unloading are performed in the waiting area, painting is performed in the painting area, and then the positions of the two painting positions are switched by rotation, repeating this process.

[0054] Four second connectors 65 are located around the four first connectors 64. The four first connectors 64 are located in the hollow area of ​​the receiving platform 12.

[0055] Initially, the transfer robot 9 controls the receiving platform 12 to move above the conveyor belt 10. Then, it controls the receiving platform 12 to move laterally below the positioning fixture 6, which is fully loaded with unpainted automotive trim parts 7. Next, it controls the receiving platform 12 to move upwards, causing the four second support columns 121 at one of its stations to engage with the four second connectors 65 at the bottom of the positioning fixture 6, thus mounting the positioning fixture 6 on the receiving platform 12. This process is repeated to pick up another positioning fixture 6 fully loaded with unpainted automotive trim parts 7.

[0056] Next, the transfer robot 9 controls the receiving platform 12 to move above the spraying position of the crossbeam 1 in the waiting area, and rotates the receiving platform 12 so that one of the positioning fixtures 6, fully loaded with unpainted automotive trim parts 7, moves directly above the spraying position. Then, the transfer robot 9 controls the waiting area to move downwards, and the end of the crossbeam 1 passes through the receiving platform 12. During the downward movement of the receiving platform 12, the first support column 31 on the crossbeam 1 will engage with the first connector 64 at the bottom of the positioning fixture 6, and the positioning fixture 6, fully loaded with unpainted automotive trim parts 7, will sit and hang on the crossbeam 1. This step completes the loading process.

[0057] The crossbeam 1 rotates 180°, and the positioning fixture 6, fully loaded with unpainted automotive trim parts 7, arrives at the painting area for painting. The transfer robot 9 repeats the above operation to place another positioning fixture 6, fully loaded with unpainted automotive trim parts 7, from the receiving platform 12 to another painting position on the crossbeam 1 located in the waiting area.

[0058] After the painting is completed, the crossbeam 1 rotates 180°, the two painting positions switch positions, the painted car trim 7 arrives at the waiting area, and the unpainted car trim 7 arrives at the painting area.

[0059] The transfer robot 9 controls the receiving platform 12 to move directly below the positioning fixture 6, which is fully loaded with painted automotive trim parts 7. Then, it controls the receiving platform 12 to move upwards, causing the second support column 121 on the receiving platform 12 to engage with the second connector 65 at the bottom of the positioning fixture 6, thus mounting the positioning fixture 6 onto the receiving platform 12. The above operation is then repeated to transfer the positioning fixture 6, fully loaded with painted automotive trim parts 7, onto the conveyor belt 10.

[0060] A blocking mechanism (not shown in the figure) is provided between the positioning fixture 6 fully loaded with painted automotive trim parts 7 and the positioning fixture 6 fully loaded with unpainted automotive trim parts 7 on the conveyor belt 10. The positioning fixture 6 fully loaded with unpainted automotive trim parts 7 will be blocked by the blocking mechanism to prevent it from being conveyed backward, while the positioning fixture 6 fully loaded with painted automotive trim parts 7 will be conveyed to the drying chamber 11 via the conveyor belt 10 to dry the automotive trim parts 7.

[0061] This production line integrates processes such as loading, unloading, spraying, and drying of automotive trim parts 7. It can spray four automotive trim parts 7 at a time, which can meet the production needs of large quantities of automotive trim parts 7 and greatly improve production efficiency.

[0062] Example 3 like Figure 8 As shown, the difference between Embodiment 3 and Embodiment 2 lies in the installation method of the receiving platform 12. In this embodiment, the receiving platform 12 is fixed in the waiting area, and its structure is the same as that in Embodiment 2. However, in Embodiment 2, the receiving platform 12 can be moved and rotated.

[0063] See Figure 9 In this embodiment, the receiving platform 12 has support legs 122 at its bottom to stably support it. A transfer mechanism (not shown in the figure) for gripping and positioning the fixture 6 is installed on the transfer robot 9; its specific structure will not be described in detail here.

[0064] Initially, the transfer robot 9 controls the transplanting mechanism to move. The transplanting mechanism grabs the positioning fixture 6 and first moves the positioning fixture 6, which is fully loaded with unpainted automotive trim parts 7 on the conveyor belt 10, to two stations on the receiving platform 12. Then, one of the positioning fixtures 6 is transferred to one of the painting positions on the crossbeam 1, at which point one of the stations on the receiving platform 12 becomes empty.

[0065] Servo motor 2 controls the crossbeam 1 to rotate 180°, rotating and shifting the positioning fixture 6, fully loaded with unpainted automotive trim parts 7, to the painting area. Multi-axis robot 8 then paints the automotive trim parts 7; for details on how the painting is performed, please refer to Example 1. During this process, transfer robot 9 moves another positioning fixture 6, fully loaded with unpainted automotive trim parts 7, from receiving platform 12 to another painting position on crossbeam 1. At this time, there are no positioning fixtures 6 at either of the two workstations on receiving platform 12. Transfer robot 9 then moves a positioning fixture 6 fully loaded with unpainted automotive trim parts 7 from conveyor belt 10 to one of the workstations on receiving platform 12.

[0066] After the painting is completed, the servo motor 2 will control the crossbeam 1 to rotate 180° again, switching the positions of the painted and unpainted automotive trim parts 7. The unpainted automotive trim parts 7 will repeat the above operation for painting. The painted automotive trim parts 7 will be transferred from the crossbeam 1 to another station on the receiving platform 12 by the transfer robot 9. Then, the transfer robot 9 will transfer the positioning fixture 6, which is full of unpainted automotive trim parts 7, on the receiving platform 12 to the painting position on the crossbeam 1 where the unloading has just been completed, thus completing the unloading and loading.

[0067] Finally, the transfer robot 9 will move the positioning fixture 6, which is fully loaded with painted automotive trim parts 7, from the receiving platform 12 to the conveyor belt 10. Then, it will grab a positioning fixture 6, which is fully loaded with unpainted automotive trim parts 7, from the conveyor belt 10 and move it to the receiving platform 12. The above operation will then be repeated.

[0068] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. An automotive trim spraying device, characterized in that, include: A crossbeam (1), each end of which has a spraying position; A rotating drive mechanism is used to drive the crossbeam (1) to rotate to switch the positions of the two spraying positions; Two positioning seats (3) are respectively set on two spraying positions and are rotatably connected to the crossbeam (1). The positioning seats (3) are provided with at least three first support columns (31) for stabilizing and supporting the positioning fixture (6). The support seats are inserted into the bottom of the positioning fixture (6). The upper part of the positioning fixture (6) has at least two positioning rods (63) for supporting the automotive trim (7). The bottom of the automotive trim (7) has a slot that matches the top cross-sectional shape of the positioning rod (63). The positioning rod (63) is inserted into the slot and cannot rotate relative to it. The bottom of the positioning fixture (6) is provided with at least three first plug-in pieces (64). The first plug-in pieces (64) have insertion holes. The first support columns (31) are inserted into the insertion holes. Two spraying rotary drive mechanisms are respectively set at the bottom of both ends of the crossbeam (1) and are used to drive the two positioning seats (3) to rotate. The nozzle (81) is capable of moving in multiple positions and at multiple angles. The nozzle (81) is configured to be able to stop at multiple positions and switch between multiple positions. When the nozzle (81) is stopped at one of the positions, it is configured to perform at least one round of spraying on selected positions on the surfaces of all automotive trim (7) on the rotating locating seat (3).

2. The automotive trim spraying device according to claim 1, characterized in that, The bottom ends of the crossbeam (1) are provided with motor mounting bases, and a motor (4) is mounted on the motor mounting base. A first gear (5) is provided on the output shaft of the motor (4). A rotating shaft (16) is provided at the bottom of the positioning seat (3). The output shaft of the motor (4) and the rotating shaft (16) are connected by a transmission mechanism.

3. The automotive trim spraying device according to claim 2, characterized in that, The output shaft of the motor (4) is provided with a first gear (5), and the lower end of the rotating shaft (16) is provided with a second gear, the first gear (5) meshing with the second gear.

4. The automotive trim spraying device according to claim 2, characterized in that, The output shaft of the motor (4) is provided with a first synchronous pulley, and the lower end of the rotating shaft (16) is provided with a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by synchronous pulley transmission.

5. The automotive trim spraying device according to claim 1, characterized in that, A multi-axis robot (8) is provided on one side of the crossbeam (1), and the nozzle (81) is mounted on the multi-axis robot (8). The multi-axis robot (8) is close to one of the spraying positions.

6. A production line for painting automotive trim parts, characterized in that, The automotive trim painting apparatus as described in any one of claims 1-6 further includes a conveying area, a waiting area, a painting area, a transfer area, and a drying area; The conveying area is provided with a conveyor belt (10), which passes through the transfer area and the drying area in sequence. The conveyor belt (10) is provided with a support device for carrying the positioning fixture (6). The waiting area is provided with a receiving platform (12), which has at least two workstations for placing positioning fixtures (6), and each workstation is provided with at least three second support columns (121) for interlocking and positioning with the bottom of the positioning fixtures (6). The spraying area is equipped with a multi-axis robot (8), and the spraying positions at both ends of the crossbeam (1) can rotate and switch between the waiting area and the spraying area; The transfer area is equipped with a transfer robot (9), which is used to transfer the positioning fixture (6) containing the automotive trim parts (7) that have been painted or have not been painted between the painting positions away from the multi-axis robot (8) on the conveyor belt (10), the receiving platform (12) and the crossbeam (1). The drying area is equipped with a drying room (11).

7. The automotive trim painting production line according to claim 6, characterized in that, The conveyor belt (10) is provided with a blocking mechanism in the conveying direction for intercepting the positioning fixture (6) containing the unfinished painted automotive trim (7).

8. The automotive trim painting production line according to claim 6, characterized in that, The bottom of the positioning fixture (6) is provided with at least three second plug-in members (65), each second plug-in member (65) having a plug hole, and the second support column (121) is plugged into the plug hole.

9. A method for spraying automotive trim parts, characterized in that, include: S1. Arrange multiple automotive trim pieces (7) evenly in a ring shape; S2. Control multiple automotive trim pieces (7) to rotate around the center of the ring, and spray at least one round of paint on selected parts of the surface of all automotive trim pieces (7) during the rotation process; S3. Switch the spraying position and spray at least once on the selected different parts of the surface of all automotive trim parts (7).

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