Coating production line

Abstract

The invention relates to the technical field of coating processing, and discloses a coating production line, the coating production line is used for coating a workpiece needing to be coated for multiple times, and the coating production line comprises a feeding station used for feeding the workpiece for the first time; the unloading station is arranged at the downstream of the loading station and is used for unloading the workpiece which is coated for the last time; the coating mechanism is arranged between the feeding station and the discharging station and is used for coating the workpieces; the workpiece identification device is used for acquiring coating processing information of the workpiece; the branch processing station is arranged between the coating mechanism and the discharging station, a discharging line is formed between the branch processing station and the discharging station, and a secondary feeding line is formed between the branch processing station and the coating mechanism; the workpieces located on the branch machining stations can be transferred to the discharging line or the re-feeding line according to the coating machining information of the workpieces. According to the coating production line, the coating processing efficiency of the thread sleeve can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of coating processing, and specifically relates to a coating production line. Background Art

[0002] The threaded sleeve is a high-strength fastening component used to connect the wind turbine generator and the blade. The spraying process of the threaded sleeve mainly involves multiple processes such as cleaning and drying, inner hole spraying, workpiece baking and air cooling, and the inner hole needs to be sprayed multiple times, which has low processing efficiency. Summary of the invention

[0003] The purpose of this application is to provide a coating production line, which is conducive to improving the coating processing efficiency of workpieces.

[0004] In order to achieve the above object, the present application provides a coating production line, which is used to coat a workpiece that requires multiple coatings, and the coating production line includes:

[0005] A loading station, used for loading the workpiece for the first time;

[0006] A material unloading station is arranged downstream of the material loading station and is used to unload the workpiece after the last coating is completed;

[0007] A coating mechanism, disposed between the loading station and the unloading station, and used for coating the workpiece;

[0008] A workpiece identification device, used for obtaining coating processing information of the workpiece;

[0009] A branch processing station is arranged between the coating mechanism and the unloading station, a unloading line for conveying the workpiece toward the unloading station is formed between the branch processing station and the unloading station, and a re-loading line for conveying the workpiece toward the coating mechanism is formed between the branch processing station and the coating mechanism. The workpiece located at the branch processing station can be transferred to the unloading line or the re-loading line according to the coating processing information of the workpiece.

[0010] In some specific embodiments, the workpiece identification device is a visual device and can obtain the coating process information of the workpiece by scanning a code mark on the workpiece.

[0011] In some specific embodiments, the coating production line further comprises:

[0012] The branch transfer device is arranged adjacent to the branch processing station and is used to transfer the workpiece located at the branch processing station to the unloading line or the re-loading line according to the coating processing information of the workpiece.

[0013] In some specific embodiments, the branch transfer device is a truss manipulator, and can move along three directions of X-axis, Y-axis and Z-axis;

[0014] And / or, the workpiece identification device is arranged on the branch transfer device.

[0015] In some specific embodiments, the coating production line further comprises:

[0016] A loop conveying device is arranged on the re-feeding line and is used to convey the workpiece toward the coating mechanism.

[0017] In some specific embodiments, a first loading line for conveying the workpiece toward the coating mechanism is formed between the loading station and the coating mechanism, and the coating production line further includes:

[0018] The first transfer device is arranged adjacent to the coating mechanism and is used to load the workpieces on the first loading line or the second loading line to the coating mechanism.

[0019] In some specific embodiments, the first transfer device is a six-axis manipulator;

[0020] And / or, the coating production line also includes a cleaning unit, which is arranged on the first loading line and is used to clean the workpiece after the first loading. The cleaning unit includes a cleaning line loading station, a cleaning oil removal tank, a cleaning rust removal tank, a cleaning pure water tank, a cleaning blow-drying tank and a cleaning unloading station arranged in sequence along the processing direction.

[0021] In some specific embodiments, the coating production line further comprises:

[0022] A double-layer conveying device is arranged downstream of the coating mechanism and includes a first conveying layer and a second conveying layer arranged in the up-down direction. The first conveying layer is used to convey the workpiece after the current coating process to the branch processing station. The second conveying layer is located on the unloading line and is used to convey the workpiece after the current coating process to the unloading station.

[0023] In some specific embodiments, the coating production line further comprises:

[0024] A baking line is arranged in parallel with the double-layer conveying device;

[0025] The second transfer device is arranged between the baking line and the double-layer conveying device, and is used for transferring the workpiece after drying to the first conveying layer.

[0026] In some specific embodiments, the coating production line further comprises:

[0027] A front conveying device, disposed between the loading station and the coating mechanism, and used to convey the workpiece toward the coating mechanism;

[0028] A rear conveying device, disposed between the coating mechanism and the baking line, and used to convey the workpiece from the coating mechanism toward a downstream direction;

[0029] The third transfer device is disposed between the rear conveying device and the baking line and is used to transfer the workpiece from the rear conveying device to the baking line.

[0030] In some specific embodiments, the workpiece on the loading station is loaded through a hanger, the front conveying device is a roller conveyor line, and can convey the hanger with the workpiece mounted on it, and the rear conveying device is a pallet conveyor line, and the pallet on the rear conveying device can convey the coated workpiece.

[0031] In some specific embodiments, the double-layer conveying device further includes a cooling device for cooling the workpiece.

[0032] Through the above technical solution, the workpiece identification device can obtain the coating processing information of the workpiece that needs to be coated multiple times, so as to determine the next processing route of the workpiece located at the branch processing station. When the workpiece is determined to still need to be coated again, the workpiece can be transported to the coating mechanism through the re-feeding route, so that the workpiece can be coated again. In this way, one coating production line can process workpieces with multiple different coating states at the same time, greatly improving the coating processing efficiency of the workpiece. In addition, workpieces with multiple different coating states can be processed simultaneously on one coating production line, without the need to increase the number of equipment and site space by multiples, greatly reducing the processing and manufacturing costs.

[0033] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0035] Figure 1 It is a structural schematic diagram of a coating production line according to a specific embodiment of the present application.

[0036] Description of Reference Numerals

[0037] 1 Hanger 2 Washing line feeding station

[0038] 3. Clean the degreasing tank 4. Clean the derusting tank

[0039] 5 Clean the pure water tank 6 Clean the blow dry tank

[0040] 7 Cleaning and discharging station 8 Front conveying device

[0041] 9 first transfer device 10 coating mechanism

[0042] 11 rear conveying device 12 third transfer device

[0043] 13 Baking line 14 Second transfer device

[0044] 15 Double-layer conveyor device 16 Branch transfer device

[0045] 17 Loop conveyor 18 Discharge channel DETAILED DESCRIPTION

[0046] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0047] In the prior art, during the processes of cleaning and drying the inner hole, spraying and drying the inner hole, and cooling the screw sleeve, the current production method is scattered between the concentrated processes of a single process, that is, the cleaning and drying process, the inner hole spraying process, and the cooling and drying process are respectively concentrated in production, and the workpieces are transported between the processes by forklifts with pallets. Since there are two processes of primer coating and top coating in the inner hole spraying process of the screw sleeve production, only the primer workpiece processing or the top coating workpiece processing can be performed in the same time period, and mixing cannot occur, resulting in low production efficiency. In addition, if different orders of coating processes are to be carried out simultaneously, multiple production lines need to be set up for processing separately, which multiplies the number of equipment and site space, making the processing cost too high.

[0048] In view of this, the present application provides a coating production line, which is used to coat workpieces that require multiple coatings. Figure 1As shown, the coating production line includes a loading station, a branch processing station, a discharge station, a coating mechanism 10 and a workpiece identification device. The loading station is used for the first loading of the workpiece, and the discharge station is arranged downstream of the loading station, and is used to discharge the workpiece after the last coating is completed. The coating mechanism 10 is arranged between the loading station and the discharge station, and is used to coat the workpiece. The workpiece identification device is used to obtain the coating processing information of the workpiece, and the branch processing station is arranged between the coating mechanism 10 and the discharge station. A discharge line for conveying the workpiece toward the discharge station is formed between the branch processing station and the discharge station, and a re-feeding line for conveying the workpiece toward the coating mechanism is formed between the branch processing station and the coating mechanism 10. The workpiece located at the branch processing station can be transferred to the discharge line or the re-feeding line according to the coating processing information of the workpiece. It can be seen that the branch processing station is a fork in the road between the unloading route and the reloading route. The workpiece located at the branch processing station can choose the next process route according to its actual coating processing information.

[0049] It should be noted that the structures of the workpiece identification device and the coating mechanism 10 can be varied. The coating mechanism 10 can be adaptively designed according to the actual production and processing needs. For example, when the workpiece to be coated is a screw sleeve, the coating mechanism 10 can be correspondingly set as a vertical inner hole sprayer; or according to different power, the coating mechanism 10 can be a sprayer, a dip coater or a roller coater, etc., and these structural forms should also belong to the protection scope of this application. The workpiece identification device can also be set according to the actual production and processing needs. For example, when a code mark is provided on the workpiece to be coated, the workpiece identification device can be a code mark identification device, and the workpiece identification device can obtain the coating processing information of the workpiece by scanning the code mark on the workpiece. According to different types of code marks, the code mark identification device can be a two-dimensional code recognition device, a bar code recognition device or other code mark recognition devices, etc.; and when the position or color of the workstation to be coated needs to be coated multiple times is different, the workpiece identification device can also be an image recognition device, etc., and these structural forms should also belong to the protection scope of this application. Furthermore, corresponding to different types of workpiece recognition devices, the coating processing information of the recognized workpiece is also different. The coating processing information of the workpiece may include the coating times information of the workpiece, the coating position information of the workpiece, the coating color information of the workpiece, etc.

[0050] In addition, the devices on the unloading line or the reloading line can be designed according to actual production needs. For example, one or more transfer devices and conveying devices of different structures can be set on the unloading line or the reloading line. Correspondingly, the location of the branch processing station can also be varied and can be designed according to actual production needs and post-coating processes. For example, if there are multiple cooling conveyor lines after the baking line 13, the branch processing station can be set on any cooling conveyor line, or, as Figure 1As shown, the branch processing station can be set at the unloading end or the middle end of the first conveying layer of the double-layer conveying device 15, and these structural forms should also fall within the protection scope of the present application.

[0051] Specifically, the workpiece located at the branch processing station can be transferred to the unloading line or the reloading line according to the coating processing information of the workpiece, that is, when the workpiece located at the branch processing station is confirmed to not need to be re-coated, the workpiece can be transported toward the unloading position through the unloading line; and when the workpiece located at the branch processing station is confirmed to still need to be re-coated, the workpiece can be transported toward the coating mechanism through the re-loading line. In this way, the coating production line of the present application can process workpieces in a variety of different coating states at the same time, greatly improving the coating processing efficiency of the workpiece, meeting the requirements of multiple automatic coating of the inner hole of the screw sleeve twice or more, and realizing mixed-line processing of the inner hole coating of the screw sleeve and automated production of the inner hole coating of the screw sleeve. In addition, compared with the method in the prior art that requires doubling the number of equipment and site space to improve processing efficiency, the coating production line of the present application can realize the simultaneous processing of workpieces in a variety of different coating states with only one, without the need to increase the number of equipment and site space additionally, greatly reducing the processing and manufacturing costs.

[0052] In addition, there are many cleaning procedures for the workpiece. For example, the cutting oil, thread rolling oil and surface impurities on the surface and inner hole of the screw sleeve need to be cleaned to ensure that the surface and inner hole of the screw sleeve are clean and free of foreign matter before coating. For the workpiece that needs to be coated again, it can be reloaded to the coating mechanism 10 for coating without going through the cleaning and drying procedures again, which can shorten the processing and conveying time of the re-coating, and further improve the coating processing efficiency of the workpiece.

[0053] Among them, the workpieces located at the branch processing stations can be sorted through manual operation to enter different subsequent processing lines, but manual operation has high labor intensity and low production efficiency.

[0054] To this end, in order to further improve the multiple coating automatic processing capabilities of the coating production line, in some specific embodiments, the coating production line may also include a branch transfer device 16, and the branch transfer device 16 is arranged adjacent to the branch processing station. The branch transfer device 16 is communicatively connected to the workpiece identification device, and can automatically transfer the workpiece located at the branch processing station to the unloading line or the re-loading line according to the coating processing information of the workpiece. Among them, the branch transfer device 16 can be a truss manipulator, and can move along three directions of the X-axis, Y-axis, and Z-axis. Of course, the branch transfer device 16 can also be a multi-axis manipulator or a lifting and transfer conveyor line, etc., and these structural forms should also fall within the protection scope of this application.

[0055] Optionally, the coating production line may further include a loop conveying device 17, which is arranged on the re-feeding line and is used to convey the workpiece toward the coating mechanism 10. Specifically, Figure 1 As shown, the loop conveying device 17 may include a first re-feeding conveying line and a second re-feeding conveying line arranged in an L shape. The loading end of the first re-feeding conveying line is arranged adjacent to the shunt processing station, the unloading end of the first re-feeding conveying line is arranged adjacent to the loading end of the second re-feeding conveying line, and the unloading end of the second re-feeding conveying line is arranged adjacent to the coating mechanism 10. When the workpiece located at the shunt processing station is confirmed to still need to be re-coated, the shunt transfer device 16 transfers the workpiece located at the shunt processing station to the loop conveying device 17, so that the workpiece can be transported along the re-feeding line toward the coating mechanism 10.

[0056] Furthermore, if Figure 1 As shown, a first loading line for conveying the workpiece toward the coating mechanism 10 is formed between the loading station and the coating mechanism 10. The coating production line also includes a first transfer device 9, which is disposed adjacent to the coating mechanism 10, and the first transfer device 9 is used to load the workpiece on the first loading line or the second loading line to the coating mechanism 10. In this way, only one transfer device can be provided to realize the loading action at two different positions, so that the structure of the coating production line is more compact and reasonable, and the production cost is lower. Among them, the first transfer device 9 can be a six-axis manipulator. Of course, the branch transfer device 16 can also be a truss manipulator, a multi-axis manipulator or a lifting and transfer conveyor line, etc. These structural forms should also fall within the protection scope of the present application.

[0057] Furthermore, the coating production line may further include a cleaning unit, which is arranged on the first feeding line and is used to clean the workpiece after the first feeding. Figure 1 As shown, the cleaning unit may include a cleaning line feeding station 2, a cleaning degreasing tank 3, a cleaning derusting tank 4, a cleaning pure water tank 5, a cleaning blow-drying tank 6 and a cleaning discharging station 7 arranged in sequence along the processing direction. The cleaning line feeding station 2 is arranged adjacent to the loading station, and the cleaning discharging station 7 is arranged adjacent to the coating mechanism 10. The cleaning unit is provided with a loading station induction switch, which can identify that the hanger 1 has arrived at the cleaning line feeding station 2. The cleaning unit also includes a cleaning line truss manipulator, which can grab the hanger or the workpiece and transfer it to the cleaning degreasing tank 3, the cleaning derusting tank 4, the cleaning pure water tank 5, the cleaning blow-drying tank 6 and the cleaning discharging station 7 in sequence. The cleaning degreasing tank 3, the cleaning derusting tank 4 and the cleaning pure water tank 5 can clean and remove the cutting oil, rolling oil and surface impurity adsorbents on the surface and inner hole of the screw sleeve to ensure that the surface and inner hole of the screw sleeve are clean and free of foreign matter. The cleaning and drying tank 6 can blow away the water stains on the surface of the cleaned screw sleeve through compressed air to ensure that the surface and inner hole of the screw sleeve are dry and free of moisture.

[0058] Optionally, the coating production line may further include a baking line 13, which is disposed between the coating mechanism 10 and the branch processing station, and is used to heat and bake the coated workpiece to solidify the coating. An in-position sensor is provided at the tail end of the baking line 13, and the in-position sensor can identify that the workpiece has reached the tail end of the baking line 13.

[0059] In some specific embodiments, in order to make the structure of the coating production line more compact and reasonable, the coating production line may also include a double-layer conveying device 15, which is located downstream of the coating mechanism 10 and is arranged between the baking line 13 and the unloading position. The double-layer conveying device 15 may include a first conveying layer and a second conveying layer arranged in the up-down direction, the first conveying layer is used to convey the workpiece after the current coating process to the branch processing station, the second conveying layer is located on the unloading line and below the first conveying layer, and the second conveying layer is used to convey the workpiece after the current coating process to the unloading station. The unloading end of the first conveying layer is provided with an in-position sensor, which can identify that the screw sleeve workpiece has arrived at the unloading end of the first conveying layer.

[0060] Among them, the first conveying layer and the second conveying layer can be arranged in parallel, and the second conveying layer can be located directly below the first conveying layer. In this case, the loading end and the unloading end of the second conveying layer respectively extend to the outside of the first conveying layer; or, the second conveying layer can be staggered with the first conveying layer in the horizontal direction, that is, the second conveying layer can be located obliquely below the first conveying layer. In this way, interference can be avoided during the transfer of workpieces.

[0061] Optionally, in order to further make the structure of the coating production line more compact and reasonable, as Figure 1 As shown, the baking line 13 and the double-layer conveying device 15 can be arranged in parallel. At this time, the coating production line can also include a second transfer device 14, which is arranged between the unloading end of the baking line 13 and the loading end of the first conveying layer of the double-layer conveying device 15. The second transfer device 14 is used to transfer the dried workpiece to the first conveying layer. Among them, the second transfer device 14 is a truss manipulator, and can move along the three directions of the X-axis, Y-axis, and Z-axis. Of course, the second transfer device 14 can also be a multi-axis manipulator or a lifting and transfer conveyor line, etc. These structural forms should also fall within the protection scope of this application.

[0062] Specifically, Figure 1As shown, the shunt processing station can be arranged on the unloading end of the first conveying layer, and the unloading end of the first conveying layer is arranged adjacent to the loading end of the loop conveying device 17. The loading end of the second conveying layer is located below the unloading end of the first conveying layer, and the unloading end of the second conveying layer is provided with a discharge channel 18, and the discharge channel 18 is arranged adjacent to the unloading station. When the workpiece located at the shunt processing station is confirmed to not need to be re-coated, the shunt transfer device 16 transfers the workpiece located at the shunt processing station to the loading end of the second conveying layer, so that the workpiece can be transported along the unloading line toward the unloading station.

[0063] Optionally, the double-layer conveying device 15 further includes a cooling device for cooling the workpiece. The cooling device can cool the workpieces on the first conveying layer and the second conveying layer at the same time, which can make the structure of the coating production line more compact and reasonable, and the manufacturing cost is also lower. The cooling device can be a blowing device such as a blower.

[0064] In some specific embodiments, the coating production line may further include a front conveying device 8, which is disposed between the loading station and the coating mechanism 10 and is used to convey the workpiece toward the coating mechanism 10. The front conveying device 8 may be provided with an induction switch and an in-place sensor, wherein the induction switch can identify the workpiece that has been cleaned together with the hanger 1 on the cleaning and unloading station 7, and the in-place sensor can identify that the hanger 1 has arrived at the coating loading station at the unloading end of the front conveying device 8. Specifically, as Figure 1 As shown, the front conveying device 8 is arranged between the cleaning and discharging station 7 and the coating mechanism 10, and the first transfer device 9 can grasp the workpiece on the cleaning and discharging station 7 through visual assistance, and transfer the workpiece to the coating mechanism 10 for coating.

[0065] Optionally, the coating production line may further include a rear conveying device 11 and a third transfer device 12. The rear conveying device 11 is disposed between the coating mechanism 10 and the baking line 13, and is used to convey the workpiece from the coating mechanism 10 toward the downstream direction. The third transfer device 12 is disposed between the rear conveying device 11 and the baking line 13, and is used to transfer the workpiece from the rear conveying device 11 to the baking line 13. The third transfer device 12 may be a six-axis robot or a truss manipulator, etc., which can grasp the screw sleeve workpiece that has been currently coated with visual assistance, and transfer the workpiece to the rear conveying device 11.

[0066] Optionally, in order to make the structure of the coating production line more reasonable and lower the cost, the workpiece identification device can be set on the branch transfer device 16, so that the workpiece identification device can be moved by the action mechanism in the branch transfer device 16, without the need to set up an additional driving mechanism. In addition, the branch transfer device 16 can be equipped with a camera visual aid to facilitate accurate grasping of the workpiece, and the workpiece identification device can share a camera with the branch transfer device 16, that is, the workpiece identification device can obtain the completed process information of the workpiece by scanning the QR code on the outer end surface of the workpiece through the camera, and the branch transfer device 16 can recognize the position of the workpiece through the camera to grasp it, and then transfer it to the next process device. Of course, in addition to being set on the branch transfer device 16, the workpiece identification device can also be set on other devices of the coating production line, such as the front conveying device 8, the first transfer device 9, the coating mechanism 10, the rear conveying device 11, the third transfer device 12, the second transfer device 14 and the double-layer conveying device 15, etc. These structural forms should also fall within the scope of protection of this application.

[0067] In some specific embodiments, Figure 1 As shown, the workpiece on the loading station can be loaded through the hanger 1, and the front conveying device 8 is a roller conveyor line, and can convey the hanger with the workpiece mounted. The rear conveying device 11 is a tray conveyor line, and the tray on the rear conveying device 11 can convey the coated workpiece.

[0068] The following will take the threaded sleeve as an example to illustrate the processing process of the coating production line of the present application.

[0069] When the screw sleeve needs to be cleaned, a stand-on forklift or a ground forklift delivers the hanger 1 together with the screw sleeve to be cleaned to the feeding station 2 of the cleaning line. After the loading station induction switch of the cleaning unit recognizes that the hanger 1 is on the line, the cleaning line truss robot grabs the hanger 1 together with the workpiece and places them in the first cleaning station of the cleaning line in the cleaning and degreasing tank 3 to complete cleaning and degreasing, the second cleaning station in the cleaning and rust removal tank 4 to complete cleaning and rust removal, the third cleaning station in the cleaning pure water tank 5 to complete pure water cleaning, and then placed in the cleaning and drying tank 6 for wind cutting and drying of the workpiece. After drying, the workpiece together with the hanger 1 is grabbed by the cleaning line truss robot and placed in the cleaning and discharging station 7, and the cleaning and drying process is completed.

[0070] After the induction switch of the front conveyor 8 recognizes the cleaned workpiece together with the hanger 1, the front conveyor 8 starts to operate, driving the hanger 1 and the workpiece to move to the coating loading station at the unloading end of the front conveyor 8. After the in-position sensor recognizes that the hanger 1 is in position, the first transfer device 9 grabs the screw sleeves from the hanger 1 in sequence with visual assistance and places them on the coating mechanism 10 for the first inner hole coating. After the coating is completed, it is placed in the V-shaped slot of the tray on the rear conveyor 11 for transportation. After running to the tail end of the rear conveyor, the third transfer device 12 grabs the screw sleeve and places it on the mesh belt on the baking line 13. The workpiece moves forward on the mesh belt to complete the coating and then the inner hole is baked. The workpiece that has completed baking moves to the tail end of the baking line. After the in-place sensor recognizes the screw sleeve workpiece, the second transfer device 14 assists in visual positioning to grab the workpiece, and places the workpiece on the tray of the first conveying layer of the double-layer conveying device 15. The workpiece moves backward on the tray, and the blower sends air to cool the workpiece, and moves to the unloading end of the first conveying layer of the double-layer conveying device 15. After the in-place sensor at the unloading end of the first conveying layer recognizes the screw sleeve workpiece, the branch transfer device 16 assists in visual positioning, and the workpiece recognition device recognizes the QR code on the outer end surface of the screw sleeve and determines it as the first coating. Then the workpiece is grabbed and placed on the loop conveying device 17. The workpiece moves backward to the unloading end of the loop conveying device 17, and the first transfer device 9 grabs the screw sleeve workpiece and places it on the coating mechanism 10 for the second inner hole coating. After the second coating is completed, it passes through the rear conveying device 11, the baking line 13 and the first conveying layer of the double-layer conveying device 15 repeatedly. When the workpiece reaches the unloading end of the first conveying layer of the double-layer conveying device 15 again, the branch transfer device 16 recognizes the QR code on the outer end surface of the screw sleeve and determines it as the second coating. The workpiece is grabbed and placed on the first conveying layer of the double-layer conveying device. The workpiece moves forward to the unloading end on the first conveying layer, thereby completing the unloading and collection of the screw sleeve workpiece.

[0071] Optionally, the coating production line also includes a controller, which is respectively communicated with the robot arm of the cleaning unit, the workpiece identification device, the front conveying device 8, the first transfer device 9, the coating mechanism 10, the rear conveying device 11, the third transfer device 12, the baking line 13, the second transfer device 14, the branch transfer device 16, the loop conveying device 17, the induction switch and various in-place sensors and other components to automatically control the various devices of the entire production line for automatic production and processing, with a high degree of automation.

[0072] It should be noted that the structural principles of components such as the hanger 1, the workpiece identification device, the cleaning unit, the front conveying device 8, the first transfer device 9, the coating mechanism 10, the rear conveying device 11, the third transfer device 12, the baking line 13, the second transfer device 14, the branch transfer device 16 and the loop conveying device 17 are well known to those skilled in the art, and do not belong to the core improvement part of the present application, so they will not be repeated here.

[0073] In summary, the branch transfer device of the coating production line of the present application is a robot, which can move in three directions of X, Y, and Z. At the same time, it is equipped with a camera as a workpiece identification device to identify the QR code on the outer end face of the screw sleeve, so as to judge whether the screw sleeve workpiece is coated for the first time or the second time. The screw sleeve workpiece coated for the first time is placed in the loop conveying device and transported to the coating mechanism again to continue the second coating. The screw sleeve workpiece that has completed the second coating is placed on the second conveying layer of the double-layer conveying device for direct unloading. In this way, the requirements for multiple automatic coating of the inner hole of the screw sleeve twice or more can be met, and the automatic processing of multiple coating of the inner hole of the workpiece, the mixed line processing of the coating of the inner hole of the screw sleeve, and the automated production of the coating of the inner hole of the screw sleeve can be realized.

[0074] The coating production line of the present application does not need to be completed manually in the production process of loading and unloading workpieces, transferring workpieces between processes, and transferring workpieces to secondary coating after the completion of one coating, that is, there is no need to manually use a forklift to transfer materials during the transfer between processes, and the degree of automation is high, which is conducive to reducing the labor intensity of employees. In the process of process flow, the process completion status of cleaning, inner hole coating, drying, cooling, etc. does not need to use paper process cards anymore, and automatic identification, grabbing and conveying are performed by intelligent transfer devices and conveying devices, which greatly reduces the difficulty of production management. In addition, in the same time period during normal production, more than two workpieces with different states can be produced in the same line at the same time, that is, the two processes of primer and topcoat in the inner hole coating of the screw sleeve can be completed in the same line, and the inner hole primer and topcoat workpiece will not be mixed, and the flexibility is high. In addition, workpieces with multiple different coating states can be processed simultaneously in a coating production line, without the need to increase the number of equipment and site space by multiples, which greatly reduces the processing and manufacturing costs.

[0075] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0076] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0078] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A coating production line, characterized in that: Used for coating workpieces that require multiple coatings, the coating production line includes: A loading station, used for loading the workpiece for the first time; A material unloading station is arranged downstream of the material loading station and is used to unload the workpiece after the last coating is completed; A coating mechanism (10) is arranged between the loading station and the unloading station and is used to coat the workpiece; A workpiece identification device, used for obtaining coating processing information of the workpiece; A branch processing station is arranged between the coating mechanism (10) and the unloading station, and a unloading line for conveying the workpiece toward the unloading station is formed between the branch processing station and the unloading station, and a reloading line for conveying the workpiece toward the coating mechanism is formed between the branch processing station and the coating mechanism (10). The workpiece located at the branch processing station can be transferred to the unloading line or the reloading line according to the coating processing information of the workpiece.

2. The coating production line according to claim 1, characterized in that: The workpiece identification device is a visual device and can obtain the coating processing information of the workpiece by scanning the code mark on the workpiece.

3. The coating production line according to claim 1, characterized in that: The coating production line also includes: The branch transfer device (16) is arranged adjacent to the branch processing station and is used to transfer the workpiece located at the branch processing station to the unloading line or the reloading line according to the coating processing information of the workpiece.

4. The coating production line according to claim 3, characterized in that: The branch transfer device (16) is a truss manipulator and can move along three directions: X-axis, Y-axis and Z-axis; And / or, the workpiece identification device is arranged on the branch transfer device (16).

5. The coating production line according to claim 1, characterized in that: The coating production line also includes: A loop conveying device (17) is arranged on the re-feeding line and is used to convey the workpiece toward the coating mechanism (10).

6. The coating production line according to claim 1, characterized in that: A first loading line for conveying the workpiece toward the coating mechanism (10) is formed between the loading station and the coating mechanism (10), and the coating production line further comprises: The first transfer device (9) is arranged adjacent to the coating mechanism (10) and is used to load the workpiece on the first loading line or the second loading line to the coating mechanism (10).

7. The coating production line according to claim 6, characterized in that: The first transfer device (9) is a six-axis manipulator; And / or, the coating production line further comprises a cleaning unit, which is arranged on the first loading line and is used to clean the workpiece after the first loading, and the cleaning unit comprises a cleaning line feeding station (2), a cleaning oil removal tank (3), a cleaning rust removal tank (4), a cleaning pure water tank (5), a cleaning blow-drying tank (6) and a cleaning discharge station (7) which are arranged in sequence along the processing direction.

8. The coating production line according to claim 1, characterized in that: The coating production line also includes: A double-layer conveying device (15) is arranged downstream of the coating mechanism (10), and includes a first conveying layer and a second conveying layer arranged in the up-down direction, wherein the first conveying layer is used to convey the workpiece after the current coating process to the branch processing station, and the second conveying layer is located on the unloading line, and is used to convey the workpiece after the current coating process to the unloading station.

9. The coating production line according to claim 8, characterized in that: The coating production line also includes: A baking line (13) is arranged in parallel with the double-layer conveying device (15); The second transfer device (14) is arranged between the baking line (13) and the double-layer conveying device (15), and is used to transfer the workpiece after drying to the first conveying layer.

10. The coating production line according to claim 9, characterized in that: The coating production line also includes: A front conveying device (8) is arranged between the loading station and the coating mechanism (10) and is used to convey the workpiece toward the coating mechanism (10); A rear conveying device (11) is arranged between the coating mechanism (10) and the baking line (13) and is used to convey the workpiece from the coating mechanism (10) toward a downstream direction; The third transfer device (12) is arranged between the rear conveying device (11) and the baking line (13), and is used to transfer the workpiece from the rear conveying device (11) to the baking line (13).

11. The coating production line according to claim 10, characterized in that: The workpiece on the loading station is loaded via a hanger, the front conveying device (8) is a roller conveyor line and is capable of conveying the hanger on which the workpiece is mounted, and the rear conveying device (11) is a pallet conveyor line, and the pallet on the rear conveying device (11) is capable of conveying the coated workpiece.

12. The coating production line according to claim 8, characterized in that: The double-layer conveying device (15) also includes a cooling device for cooling the workpiece.

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