An environmentally friendly paint spraying production line

Abstract

The present invention discloses an environmentally friendly paint spraying production line, comprising a cleaning device, a paint spraying device, a detection device, a dehumidifying device, a microwave drying device, and a dehumidifying device which are sequentially distributed along the production line; the cleaning device, the paint spraying device, the detection device, the dehumidifying device, the microwave drying device, and the dehumidifying device are all provided with a conveying device, and are sequentially connected with the conveying device; the cleaning device is used to clean the surface of the workpiece; the paint spraying device is used to spray paint on the workpiece; the detection device is used to detect the paint spraying condition of the workpiece; the dehumidifying device is used to remove moisture from the surface of the workpiece; and the microwave drying device is used to perform microwave drying on the surface of the workpiece. The environmentally friendly paint spraying production line of the present invention can perform a series of processes including cleaning, painting, detection, dehumidifying, drying, and dehumidifying on the workpiece, thereby improving the quality of paint spraying.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece processing, and in particular to an environmentally friendly paint spraying production line. Background Art

[0002] At present, in order to form a protective layer or decorative layer on the surface of the workpiece during production, it is generally necessary to spray paint on the surface of the workpiece. The traditional spray painting production line mainly uses a conveyor to transport the workpiece to the spray painting station for spray painting, and then the workpiece is transported by a conveyor mechanism and dried after spraying. However, the quality of spray painting in the traditional spray painting production line is poor. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an environmentally friendly paint spraying production line, which can perform a series of processes including cleaning, painting, testing, dehumidifying, drying and dehumidifying on workpieces to improve the quality of paint spraying.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] An environmentally friendly paint spraying production line comprises a cleaning device, a paint spraying device, a detection device, a dehumidifying device, a microwave drying device and a dehumidifying device which are sequentially distributed along the production line; the cleaning device, the paint spraying device, the detection device, the dehumidifying device, the microwave drying device and the dehumidifying device are all provided with a conveying device, and are sequentially connected with the conveying device; the cleaning device is used for cleaning the surface of a workpiece; the paint spraying device is used for spraying paint on the workpiece; the detection device is used for detecting the paint spraying condition of the workpiece; the dehumidifying device is used for removing moisture from the surface of the workpiece; the microwave drying device is used for microwave drying the surface of the workpiece.

[0006] Further, the cleaning device comprises a cleaning chamber, a plurality of cleaning mechanisms and the conveying device, wherein the cleaning mechanism is arranged at the top of the cleaning chamber and is used to clean the workpiece on the conveying device; the plurality of cleaning mechanisms are distributed at intervals in the conveying direction of the conveying device;

[0007] The cleaning mechanism includes a cleaning roller, an anti-static rod and an air blowing port. The cleaning roller is pivotally connected to the cleaning chamber and is used for frictional contact with the surface of the workpiece; the anti-static rod is arranged on one side of the cleaning roller and is used for removing static electricity from the surface of the workpiece; the air blowing port faces the conveying end face of the conveying device.

[0008] Furthermore, the paint spraying device includes a paint spraying room, a paint spraying mechanism and the conveying device. The paint spraying mechanism includes a paint spraying gun and a paint spraying gun driving assembly. The paint spraying gun is installed in the paint spraying room and is located above the conveying end surface of the conveying device; the paint spraying gun driving assembly is used to drive the paint spraying gun to move in a paint spraying direction, and the paint spraying direction is perpendicular to the conveying direction of the workpiece; the paint spraying gun driving assembly is also used to drive the paint spraying gun to move in the height direction of the paint spraying room.

[0009] Furthermore, the paint spraying device also includes a cleaning and recycling system, which is arranged at the conveying end of the conveying mechanism; the cleaning and recycling system is used to scrape off the residual paint at the conveying end of the conveying mechanism for recycling; the cleaning and recycling system includes a first scraper assembly and a second scraper assembly, the first scraper assembly includes a first mounting frame, a first cleaning roller, a first scraper and a first collecting trough, the first mounting frame is provided with a first water trough, the first cleaning roller is pivotally connected to the first water trough; the first cleaning roller is used to contact with the conveying end of the conveying mechanism; the first scraper is fixed to one side of the first cleaning roller side and in contact with the first cleaning roller; the first collecting trough is fixedly connected to the first mounting frame and is used to receive the residual paint scraped off by the first scraper; the second scraper assembly includes a second mounting frame, a second cleaning roller and a second collecting trough, and the second mounting frame is arranged below the conveying device; the second mounting frame is provided with a second water trough, and the second cleaning roller is pivotally connected to the second water trough; the second cleaning roller is used to contact with the bottom end surface of the conveying device; the second scraper is fixed to one side of the second cleaning roller and in contact with the second cleaning roller; the second collecting trough is fixedly connected to the second mounting frame and is used to receive the residual paint scraped off by the second scraper.

[0010] Furthermore, the detection device includes a detection chamber and the conveying device, and the top cover of the detection chamber is made of a transparent material; and a plurality of detection cameras are provided on the top of the detection chamber.

[0011] Furthermore, the dehumidification device includes a dehumidification tunnel and a leveling tunnel, and the dehumidification tunnel includes a first drying chamber, a first wind chamber and a heat exchange chamber; a first air outlet and a first air inlet are provided at the top of the first drying chamber, and the first wind chamber and the heat exchange chamber are both installed at the top of the first drying chamber, one end of the first wind chamber is connected to the first air outlet, and the other end of the first wind chamber is connected to one end of the heat exchange chamber; the other end of the heat exchange chamber is connected to the first air inlet; a first fan is provided in the first wind chamber; a heat exchanger is provided in the heat exchange chamber; an air plate is provided at the top of the first drying chamber, and an air cavity is formed between the air plate and the top wall of the first drying chamber; the first air outlet and the first air inlet are both connected to the top of the air cavity; and a plurality of air outlet holes are provided on the air plate.

[0012] Furthermore, the microwave drying device includes a second drying chamber, a conveying device and a heat circulation mechanism, a microwave generating mechanism is provided at the top of the second drying chamber, the microwave generating mechanism is used to generate microwaves to heat the second drying chamber; a second air inlet is provided at the top of the second drying chamber; the heat circulation mechanism includes a second air inlet chamber, a second fan and a water pipe, the second air inlet chamber is installed at the top of the second drying chamber; the second fan is installed in the second air inlet chamber, the inlet of the second fan is connected to the outside of the second air inlet chamber; the outlet of the second fan is connected to the second air inlet; the water pipe is fixed to the top of the second drying chamber, the water pipe is used to introduce water for cooling the microwave generating mechanism; the water in the water pipe is used to absorb heat after cooling the microwave generating mechanism, and heat the air at the second air inlet.

[0013] Furthermore, the microwave generating mechanism includes a microwave generator and a microwave guide tube, both of which are fixedly connected to the top of the second drying chamber; the microwave generator is arranged at the end of the microwave guide tube; the extension direction of the microwave guide tube is perpendicular to the workpiece conveying direction; the microwave guide tube is used to conduct the microwaves generated by the microwave generator; and a plurality of cracks are arranged at the bottom end of the microwave guide tube.

[0014] Furthermore, the second drying chamber is also provided with a water loading mechanism and a microwave unloading mechanism, the water loading mechanism is used to absorb microwaves; the water loading mechanism is provided at the starting end and the end end of the conveying device; and a plurality of microwave unloading mechanisms are provided below the conveying end surface of the conveying device.

[0015] Furthermore, the environmentally friendly paint spraying production line also includes a curing device, a cleaning device, a paint spraying device, a detection device, a dehumidification device, a microwave drying device, a dehumidification device, and a curing device, which are distributed in sequence along the production line.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the workpiece can be transported to the cleaning device, the painting device, the detection device, the dehumidification device, the microwave drying device, and the dehumidification device in sequence via the conveying device; the workpiece is subjected to a series of processes including cleaning, painting, detection, dehumidification, drying, and dehumidification, that is, the workpiece is painted after the surface is cleaned, and the surface of the workpiece is detected after the painting is completed, and then it is dehumidified and preliminarily air-dried, and then reaches the microwave drying device for microwave drying, and then reaches the dehumidification device for further air drying and dehumidification, thereby improving the quality of painting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The environmentally friendly paint spraying production line of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the cleaning device of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the paint spraying device of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the first scraper assembly of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the second scraper assembly of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the dehumidification device of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the microwave drying device of the present invention;

[0024] Figure 8 It is a schematic structural diagram of the curing device of the present invention.

[0025] In the figure: 10, paint spraying device; 11, paint spraying room; 12, paint spraying mechanism; 13, first scraper assembly; 131, first mounting frame; 132, first cleaning roller; 133, first scraper; 134, first collecting trough; 14, second scraper assembly; 141, second mounting frame; 142, second cleaning roller; 143, second scraper; 144, second collecting trough; 20, cleaning device; 21, cleaning room; 22, blowing pipe; 30, detection device; 40, dehumidification device; 41, first drying room; 411, first air outlet; 412 , first air inlet; 413, wind plate; 4131, air outlet; 42, first air chamber; 43, first fan; 44, heat exchange chamber; 45, heat exchanger; 50, microwave drying device; 51, second drying chamber; 511, second air inlet; 512, water load pipe; 513, microwave unloading pipe; 514, second air outlet; 52, microwave generating mechanism; 53, second air chamber; 531, second fan; 532, water pipe; 54, exhaust device; 60, curing device; 61, curing chamber; 62, curing lamp; 70, conveying device. DETAILED DESCRIPTION

[0026] Below, the present invention is further described in conjunction with the accompanying drawings and specific embodiments:

[0027] like Figure 1-8An environmentally friendly paint spraying production line shown in the figure includes a cleaning device 20, a paint spraying device 10, a detection device 30, a dehumidifying device 40, a microwave drying device 50, and a dehumidifying device 40 which are sequentially distributed along the production line. The cleaning device 20, the paint spraying device 10, the detection device 30, the dehumidifying device 40, the microwave drying device 50, and the dehumidifying device 40 are all provided with a conveying device 70, and on the production line, the cleaning device 20, the paint spraying device 10, the detection device 30, the dehumidifying device 40, the microwave drying device 50, and the dehumidifying device 40 can be sequentially connected with the conveying device 70, that is, the workpiece can sequentially reach the cleaning device 20, the paint spraying device 10, the detection device 30, the dehumidifying device 40, the microwave drying device 50, and the dehumidifying device 40 through the conveying device 70. Specifically, the cleaning device 20 can clean the surface of the workpiece, and the paint spraying device 10 is used to spray paint on the workpiece. And the detection device 30 can detect the painting condition of the workpiece. The dehumidification device 40 is used to remove moisture from the surface of the workpiece; the microwave drying device 50 is used to perform microwave drying on the surface of the workpiece.

[0028] On the basis of the above structure, when the environmentally friendly paint spraying production line of the present invention is used, the workpiece can be placed on the conveying device 70, and the conveying device 70 can convey the workpiece to the cleaning device 20. Under the action of the cleaning device 20, the surface of the workpiece on the conveying device 70 can be cleaned. Thereafter, the conveying device 70 conveys the workpiece to the paint spraying device 10, and the workpiece is received and conveyed to the paint spraying station by the conveying device 70 of the paint spraying device 10. The paint spraying device 10 can spray paint on the cleaned surface of the workpiece, which can avoid dust sticking on the surface of the workpiece and affecting the quality of the paint spraying. After the paint spraying is completed, the conveying device 70 can convey the workpiece to the detection device 30, and the detection device 30 is used to detect whether the paint spraying is uneven or there is residual paint. After the detection is qualified, the conveying device 70 conveys the workpiece to the dehumidification device 40 for dehumidification and air drying, and the paint surface of the workpiece is preliminarily dried. Thereafter, the conveying device 70 conveys the workpiece to the microwave drying place for microwave drying. The microwave drying is fast and uniform, so that the paint surface of the workpiece is dried better. After the drying is completed, the conveying device 70 conveys the workpiece to the next dehumidifying device 40 for another dehumidification and drying process, which has a better effect.

[0029] In this way, the workpiece can be transported to the cleaning device 20, the painting device 10, the detection device 30, the dehumidification device 40, the microwave drying device 50, and the dehumidification device 40 in sequence through the conveying device 70; the workpiece can be cleaned, painted, detected, dehumidified, dried and dehumidified to improve the quality and efficiency of painting.

[0030] It should be noted that the above-mentioned conveying device 70 can select the belt conveying mechanism, chain conveying mechanism or roller conveying mechanism in the prior art. Taking the belt conveying mechanism as an example, the belt conveying mechanism passes through the cleaning device 20, the paint spraying device 10, the detection device 30, the dehumidification device 40, the microwave drying device 50, and the partial conveying section of the dehumidification device 40 in sequence to form the corresponding conveying device 70. Of course, the conveying device 70 can also be a belt conveying mechanism set in the corresponding device respectively. When using the production line, each belt conveying mechanism can be connected.

[0031] Furthermore, in the present embodiment, the cleaning device 20 includes a cleaning chamber 21, a plurality of cleaning mechanisms and the conveying device 70. The conveying device 70 is arranged at the bottom end of the cleaning chamber 21, and the cleaning mechanism is arranged at the top end of the cleaning chamber 21. The cleaning mechanism can clean the workpiece on the conveying device 70, and the plurality of cleaning mechanisms are distributed at intervals in the conveying direction of the conveying device 70.

[0032] Specifically, the cleaning mechanism includes a cleaning roller, an antistatic rod, and an air blowing port. The cleaning roller is pivotally connected to the cleaning chamber 21 and is used for friction contact with the surface of the workpiece. The antistatic rod is provided on one side of the cleaning roller and is used for removing static electricity from the surface of the workpiece. The air blowing port faces the conveying end surface of the conveying device 70. The air blowing port can introduce air into the cleaning chamber 21 through the air blowing pipe 22 provided at the top of the cleaning chamber 21.

[0033] On the basis of this structure, during the cleaning operation, the conveying device 70 conveys the workpiece to the cleaning chamber 21, and the cleaning roller at the top of the cleaning chamber 21 can clean and remove dust from the surface of the workpiece during the rotation process. After that, the anti-static rod arranged on one side of the cleaning roller can contact the workpiece to prevent static electricity from being generated during the cleaning process of the cleaning roller. Of course, a blowing pipe 22 is arranged at the top of the cleaning chamber 21 to communicate with the blowing port, and introduces blowing air to the surface of the workpiece for dust removal. In this way, with the cleaning roller and blowing dust removal, the cleaning effect is better.

[0034] It should be noted that the cleaning roller can be realized by using a cleaning brush in the prior art.

[0035] Furthermore, the paint spraying device 10 includes a paint spraying room 11, a paint spraying mechanism 12 and the above-mentioned conveying device 70. The conveying device 70 is provided at the bottom end of the paint spraying room 11. Specifically, the paint spraying mechanism 12 includes a paint spraying gun and a paint spraying gun driving assembly. The paint spraying gun is installed in the paint spraying room 11 and is located above the conveying end surface of the conveying device 70. The paint spraying gun driving assembly is used to drive the paint spraying gun to move in a paint spraying direction, which is perpendicular to the conveying direction of the workpiece conveying direction. The paint spraying gun driving assembly is also used to drive the paint spraying gun to move in the height direction of the paint spraying room 11.

[0036] It should be noted that, in the present embodiment, the conveying direction of the conveying device 70 may be the length direction of the workpiece itself, and the painting direction perpendicular to the conveying direction of the conveying device 70 may be the width direction of the workpiece itself.

[0037] On the basis of the above structure, the conveying device 70 at the bottom of the paint spraying room 11 can receive the cleaned workpiece sent from the cleaning room 21. Driven by the conveying device 70, the workpiece can be transported to the paint spraying room 11, and the paint gun in the paint spraying room can spray paint on the workpiece on the conveying device 70. The paint gun can move up and down to adjust the paint spraying distance between the paint gun and the workpiece, and the paint gun can move in the paint spraying direction, that is, reciprocate in the width direction of the workpiece, and the workpiece is continuously transported in the conveying direction of the conveying device 70, that is, the paint gun can spray paint in sequence in the length direction of the workpiece. In this way, the painting operation of different positions of the workpiece is completed, with a high degree of automation and high painting efficiency.

[0038] Of course, the above-mentioned paint spray gun driving assembly can be realized by using an electric slide combination in the prior art, that is, electric slides are arranged in the paint spraying direction and the height direction of the paint spraying room 11, and the combination realizes the movement of the paint spray gun in the paint spraying direction and the height direction.

[0039] Furthermore, the paint spraying device 10 also includes a cleaning and recycling system, which is arranged at the conveying end of the conveying mechanism and is used to scrape off the residual paint at the conveying end of the conveying mechanism for recycling. The cleaning and recycling system includes a first scraper assembly 13 and a second scraper assembly 14. Specifically, the first scraper assembly 13 includes a first mounting frame 131, a first cleaning roller 132, a first scraper 133 and a first collecting trough 134. Specifically, the first mounting frame 131 is fixedly connected to the conveying end of the conveying mechanism, and a first water tank is provided at the top of the first mounting frame 131. The first cleaning roller 132 is pivotally connected to the first water tank, and the first cleaning roller 132 is used to contact the conveying end of the conveying mechanism. In addition, the first scraper 133 is fixed to one side of the first cleaning roller 132 and contacts the first cleaning roller 132, and the first collecting trough 134 is fixedly connected to the first mounting frame 131. The first collecting trough 134 is used to receive the residual paint scraped off by the first scraper 133.

[0040] In addition, the second scraper assembly 14 includes a second mounting frame 141, a second cleaning roller 142 and a second collecting trough 144. The second mounting frame 141 is arranged below the conveying device 70. A second water trough is arranged at the top of the second mounting frame 141, and the second cleaning roller 142 is pivotally connected to the second water trough. Of course, the second cleaning roller 142 is used to contact the bottom end surface of the conveying device 70; the second collecting trough 144 is fixed to the second mounting frame 141 and is used to receive the residual paint scraped off by the second scraper 143.

[0041] On the basis of this structure, when scraping off the residual paint, water can be introduced into the first water tank, and the first cleaning roller 132 can be driven to rotate by a motor. A cleaning cloth can be set on the surface of the first cleaning roller 132, and the cleaning cloth can be dipped in water when the first cleaning roller 132 rotates. During the rotation, the cleaning cloth dipped in water contacts the surface of the first cleaning roller 132 to clean the conveying end of the conveying mechanism. The first scraper 133 can scrape off the residual paint on the surface of the first cleaning roller 132, and the scraped residual paint can fall into the first collecting trough 134 for recovery.

[0042] Furthermore, the first scraper assembly 13 further includes a first recovery roller and a second scraper. The first recovery roller is used to contact the bottom end surface of the conveying mechanism 70 and recover the residual water stains of the conveying mechanism during the rotation process. The second scraper is fixed to one side of the first recovery roller and is in contact with the first recovery roller. In this way, after the conveying end of the conveying mechanism is cleaned by the first cleaning roller, water stains will remain on the conveying mechanism. In order not to affect the workpiece, after the conveying end of the conveying mechanism is cleaned, the first recovery roller can be rotated to contact the bottom end surface of the conveying mechanism to remove the water stains, and the second scraper can scrape off the water stains on the outer surface of the first recovery roller.

[0043] In addition, since the existing conveying device 70 is mainly a conveying mechanism that performs rotating motion, such as a belt conveying mechanism, a chain conveying mechanism or a roller conveying mechanism, that is, it will rotate after the workpiece is conveyed to the end, that is, after the first scraper assembly 13 can scrape off the residual paint at the conveying end of the conveying mechanism, the conveyor belt passing through the conveying roller can continue to be transmitted to the bottom of the conveying frame. At this time, the motor can drive the second cleaning roller 142 to rotate, and the rotating second cleaning roller 142 can contact the lower surface of the conveyor belt to further clean the conveyor belt, and the second scraper 143 can scrape off the residual paint or dust on the surface of the second cleaning roller 142, and the second collecting trough 144 can further recover the residual paint or dust, and the cleaning and recovery effect is better.

[0044] The second scraper assembly 14 also includes a second recovery roller 143 and a third scraper 144. The second recovery roller 143 is pivotally connected in the water tank and is used to contact the bottom end surface of the conveying device 70. The second recovery roller 143 can recover water stains from the conveying device 70. The third scraper 144 is fixed to one side of the second recovery roller 143 and is used to contact the second recovery roller 143.

[0045] In this way, after the second cleaning roller 142 performs further cleaning, water stains will still remain on the conveying mechanism 70. In order not to affect the workpiece, after the second cleaning roller 142 performs cleaning, the second recovery roller 143 can rotate to contact the bottom end surface of the conveying mechanism 70 to remove the water stains, and the third scraper 144 can scrape off the water stains on the outer surface of the second recovery roller 142.

[0046] Furthermore, the detection device 30 in this embodiment includes a detection chamber and a conveying device 70. The conveying device 70 is connected to the bottom of the detection chamber. The top cover of the detection chamber is made of transparent material. A plurality of detection cameras are arranged at the top of the detection chamber. In this way, when the conveying device 70 of the detection device 30 receives the workpiece conveyed by the paint spraying device 10, the plurality of detection cameras can detect the workpiece in the detection chamber, and detect the uniformity of the paint spraying and the residual paint. Since the top cover of the detection chamber is made of transparent material, the operator can also observe the paint spraying of the workpiece with the naked eye from the top of the detection chamber, and the detection is more comprehensive.

[0047] Furthermore, the dehumidification device 40 includes a dehumidification tunnel and a leveling tunnel, and the dehumidification tunnel includes a first drying chamber 41, a first air chamber 42 and a heat exchange chamber 44. The above-mentioned conveying device 70 can be arranged at the bottom end of the first drying chamber 41, and a first air outlet 411 and a first air inlet 412 are arranged at the top end of the first drying chamber 41. The first air chamber 42 and the heat exchange chamber 44 are both installed at the top end of the first drying chamber 41, so that one end of the first air chamber 42 is connected to the first air outlet 411, and the other end of the first air chamber 42 is connected to one end of the heat exchange chamber 44. In addition, the other end of the heat exchange chamber 44 is connected to the first air inlet 412. Specifically, a first fan 43 is arranged in the first air chamber 42, and a heat exchanger 45 is arranged in the heat exchange chamber 44.

[0048] On the basis of the above structure, the conveying device 70 of the drying chamber receives the workpiece conveyed by the detection device 30 and conveys it to the first drying chamber 41. The first drying chamber 41 can be heated by the heating device, and the first fan 43 is started. The hot steam generated by drying can flow to the first wind chamber 42 through the exhaust action of the first fan 43, and flow to the heat exchange chamber 44 through the first wind chamber 42. During the exhaust process, the heat of the hot steam may have been partially dissipated. Therefore, when it reaches the heat exchange chamber 44, it can exchange heat with the heat exchanger 45, and be reheated after heat exchange through the heat exchanger 45. The reheated hot air can then enter the first drying chamber 41, and the heat is recycled for drying, thereby reducing the waste of resources.

[0049] Of course, a wind plate 413 may be provided at the top of the first drying chamber 41, and a wind cavity is formed between the wind plate 413 and the top wall of the first drying chamber 41, and the first air outlet 411 and the first air inlet 412 are both connected to the top of the air cavity; a plurality of air outlet holes 4131 are provided on the wind plate 413. In this way, when exhausting, the air in the first drying chamber 41 can be guided to the air cavity through the plurality of air outlets, and then drawn out through the first air outlet 411. When intake, the air can be introduced into the air cavity through the first air inlet 412, and evenly guided to the surface of the workpiece through the plurality of air outlet holes 4131, so that the drying effect is more uniform.

[0050] It should be noted that the above-mentioned leveling tunnel and dehumidification tunnel can be arranged in sequence between the detection device 30 and the microwave drying device 50. The leveling tunnel is arranged close to the detection device, and the conveying device 70 can convey the workpiece to the leveling tunnel, so that the paint on the surface of the workpiece after spraying is evenly distributed and leveled, and then enters the dehumidification tunnel for drying.

[0051] The conveying device 70 in the second dehumidification tunnel then conveys the workpiece to the first drying chamber 41 of the dehumidification tunnel for hot air circulation dehumidification.

[0052] Furthermore, the microwave drying device 50 in this embodiment includes a second drying chamber 51 and a heat circulation mechanism, the conveying device 70 is arranged in the second drying chamber 51, and a microwave generating mechanism 52 is arranged at the top of the second drying chamber 51, the microwave generating mechanism 52 is used to generate microwaves to heat the second drying chamber 51, so as to heat the workpiece conveyed by the workpiece conveying mechanism. In addition, a second air inlet 511 is arranged at the top of the second drying chamber 51.

[0053] Specifically, the heat circulation mechanism includes a second air chamber 53, a second fan 531 and a water pipe 532. The second air chamber 53 is installed at the top of the second drying chamber 51. The second fan 531 is installed in the second air chamber 53. The inlet of the second fan 531 is connected to the outside of the second air chamber 53, and the outlet of the second fan 531 is connected to the second air inlet 511. The water pipe 532 can be fixed at the top of the second drying chamber 51. Specifically, the water pipe 532 can be arranged around the microwave generating mechanism 52 and the outer periphery of the second air inlet 511. Water can be introduced into the water pipe 532 to cool the microwave generating mechanism 52. The water in the water pipe 532 can absorb heat after cooling the microwave generating mechanism 52, and the water after absorbing heat can heat the air of the second air inlet 511.

[0054] Based on the above structure, the conveying device 70 of the second drying chamber 51 can receive the workpiece conveyed by the dehumidification tunnel and can convey the workpiece to the second drying chamber 51. At the same time, the microwave generating mechanism 52 can generate microwaves to heat the second drying chamber 51, thereby heating the workpiece conveyed by the workpiece conveying mechanism.

[0055] At the same time, the water pipe 532 in the second drying chamber 51 can introduce cooling water to cool the microwave generating mechanism 52. The cooled water absorbs heat to reheat the air from the second air inlet 511, and the hot air enters the second drying chamber 51 to assist in drying. The auxiliary drying reduces the energy consumption of the microwave generating mechanism 52, and the microwave generating mechanism 52 can be cooled in time to extend its service life.

[0056] During the actual drying process, water vapor may also be generated in the second drying chamber 51 and needs to be discharged to the outside. Therefore, a second air outlet 514 can be opened at the top of the second drying chamber 51. The second air outlet 514 can be connected to the exhaust device 54, and the exhaust device 54 can exhaust the hot and humid gas in the second drying chamber 51 through the second air outlet 514.

[0057] Furthermore, in this embodiment, the microwave generating mechanism 52 includes a microwave generator and a microwave conduit, which are both fixed to the top of the second drying chamber 51, and the microwave generator is arranged at the end of the microwave conduit, and the extension direction of the microwave conduit is perpendicular to the workpiece conveying direction; the microwave conduit is used to conduct the microwave generated by the microwave generator. Specifically, a plurality of cracks are arranged at the bottom end of the microwave conduit.

[0058] In this way, when microwave heating is performed, the microwave generator can be started, and the microwaves generated by the microwave generator can be guided through the microwave duct. Since a plurality of cracks are provided at the bottom end of the microwave duct, the microwaves can be transmitted through the cracks of the microwave duct to the second drying chamber 51 to dry the surface of the workpiece. Since the microwaves are first transmitted through the microwave duct in a direction perpendicular to the workpiece conveying direction and then guided out through each crack, the emission of the microwaves changes from a point to a line or a surface, and microwave heating and drying are performed on each surface of the workpiece. The microwaves are evenly distributed, and the drying effect is better.

[0059] Furthermore, a water loading mechanism and a microwave unloading mechanism are also provided in the second drying chamber 51. The water loading mechanism is used to absorb microwaves. The starting end and the end of the conveying device 70 are both provided with water loading mechanisms. A plurality of microwave unloading mechanisms are provided below the conveying end surface of the conveying device 70. Specifically, the water loading mechanism may include a plurality of water loading tubes 512. Similarly, the microwave unloading mechanism may also include a microwave unloading tube 513. A water medium used for microwave absorption may be introduced into the water loading tube 512 and the microwave unloading tube 513.

[0060] Specifically, multiple water-loading tubes 512 are distributed at intervals in the workpiece conveying direction, and the extension direction of the water-loading tubes 512 is perpendicular to the workpiece conveying direction. Water is introduced into the multiple water-loading tubes 512, and water media that can be used for microwave absorption can be distributed in the workpiece conveying direction and in the direction perpendicular to the workpiece conveying direction. The absorption surface formed by the multiple water-loading tubes 512 is larger, and the microwave absorption effect is better. In addition, multiple water-loading tubes 512 are provided above and below the conveying end surface of the conveying device 70, and water is used to absorb microwaves above and below the conveying device 70, and the radiation protection effect is better.

[0061] The microwave unloading mechanism distributed below the conveying end surface of the conveying device 70 can also absorb microwaves. When the workpiece is placed on the conveying device 70 and the workpiece is small in size, the conveying end surface of the conveying device 70 will not be completely covered. When the microwave enters the drying chamber, the microwaves on both sides of the workpiece will not be absorbed by the workpiece, but will be concentrated on the conveying end surface of the conveying device 70, resulting in uneven microwave distribution. Therefore, a plurality of microwave unloading mechanisms are arranged below the conveying end surface of the conveying device 70 to absorb microwaves not absorbed by the workpiece. On the one hand, this prevents microwaves from leaking from the bottom of the conveying device 70 and causing radiation. On the other hand, it can also make the microwave distribution in the drying chamber uniform and the microwave density consistent, thereby improving the drying and molding quality.

[0062] It should be noted that the water loading tube 512 and the microwave unloading tube 513 can both be non-metallic tubes (such as plastic water pipes) in the prior art.

[0063] Furthermore, the environmentally friendly paint spraying production line also includes a curing device 60. A cleaning device 20, a paint spraying device 10, a detection device 30, a dehumidification device 40, a microwave drying device 50, a dehumidification device 40, and a curing device 60 are distributed in sequence along the production line. In this way, after the workpiece has undergone a series of processes of cleaning, painting, detection, dehumidification, drying and dehumidification in sequence, it can finally be transported by the conveying device 70 to the curing device 60 for curing, so that the paint surface is cured.

[0064] The curing device 60 in this embodiment includes a curing chamber 61 and a curing lamp 62. The curing lamp 62 can be a UV lamp in the prior art. The curing lamp 62 is installed at the top of the curing chamber 61. The above-mentioned conveying device 70 is set at the bottom of the curing chamber 61. The conveying device 70 receives the workpiece sent by the dehumidification device 40, and the curing lamp 62 cures the workpiece on the conveying device 70.

[0065] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. An environmentally friendly paint spraying production line, characterized in that: It includes a cleaning device, a paint spraying device, a detection device, a dehumidifying device, a microwave drying device, and a dehumidifying device which are sequentially distributed along the production line; the cleaning device, the paint spraying device, the detection device, the dehumidifying device, the microwave drying device, and the dehumidifying device are all provided with a conveying device, and are sequentially connected with the conveying device; the cleaning device is used to clean the surface of the workpiece; the paint spraying device is used to spray paint on the workpiece; the detection device is used to detect the paint spraying condition of the workpiece; the dehumidifying device is used to remove moisture from the surface of the workpiece; the microwave drying device is used to perform microwave drying on the surface of the workpiece; The paint spraying device also includes a cleaning and recycling system, which is arranged at the conveying end of the conveying mechanism; the cleaning and recycling system is used to scrape off the residual paint at the conveying end of the conveying mechanism for recycling; the cleaning and recycling system includes a first scraper assembly and a second scraper assembly, the first scraper assembly includes a first mounting frame, a first cleaning roller, a first scraper and a first collecting trough, the first mounting frame is provided with a first water trough, and the first cleaning roller is pivotally connected to the first water trough; the first cleaning roller is used to contact with the conveying end of the conveying mechanism; the first scraper is fixed to one side of the first cleaning roller and contacts with the first cleaning roller; the first collecting trough is fixed to the first mounting frame and is used to receive the residual paint scraped off by the first scraper; the second scraper assembly includes a second mounting frame, a second cleaning roller and a second collecting trough, the second mounting frame is arranged below the conveying device; the second mounting frame is provided with a second water trough, and the second cleaning roller is pivotally connected to the second water trough; the second cleaning roller is used to contact with the bottom end surface of the conveying device; the second scraper is fixed to one side of the second cleaning roller and contacts with the second cleaning roller; the second collecting trough is fixed to the second mounting frame and is used to receive the residual paint scraped off by the second scraper; The dehumidification device includes a dehumidification tunnel and a leveling tunnel, and the dehumidification tunnel includes a first drying chamber, a first wind chamber and a heat exchange chamber; a first air outlet and a first air inlet are provided at the top of the first drying chamber, and the first wind chamber and the heat exchange chamber are both installed at the top of the first drying chamber, one end of the first wind chamber is connected with the first air outlet, and the other end of the first wind chamber is connected with one end of the heat exchange chamber; the other end of the heat exchange chamber is connected with the first air inlet; a first fan is provided in the first wind chamber; a heat exchanger is provided in the heat exchange chamber; an air plate is provided at the top of the first drying chamber, and an air cavity is formed between the air plate and the top wall of the first drying chamber; the first air outlet and the first air inlet are both connected with the top of the air cavity; a plurality of air outlet holes are provided on the air plate; The microwave drying device includes a second drying chamber, a conveying device and a heat circulation mechanism. A microwave generating mechanism is provided at the top of the second drying chamber, and the microwave generating mechanism is used to generate microwaves to heat the second drying chamber; a second air inlet is provided at the top of the second drying chamber; the heat circulation mechanism includes a second air inlet chamber, a second fan and a water pipe, and the second air inlet chamber is installed at the top of the second drying chamber; the second fan is installed in the second air inlet chamber, and the inlet of the second fan is connected to the outside of the second air inlet chamber; the outlet of the second fan is connected to the second air inlet; the water pipe is fixed to the top of the second drying chamber, and the water pipe is used to introduce water for cooling the microwave generating mechanism; the water in the water pipe is used to absorb heat after cooling the microwave generating mechanism, and heat the air at the second air inlet.

2. The environmentally friendly paint spraying production line according to claim 1, characterized in that: The cleaning device comprises a cleaning chamber, a plurality of cleaning mechanisms and the conveying device, wherein the cleaning mechanism is arranged at the top of the cleaning chamber and is used to clean the workpiece on the conveying device; the plurality of cleaning mechanisms are distributed at intervals in the conveying direction of the conveying device; The cleaning mechanism includes a cleaning roller, an anti-static rod and an air blowing port. The cleaning roller is pivotally connected to the cleaning chamber and is used for frictional contact with the surface of the workpiece; the anti-static rod is arranged on one side of the cleaning roller and is used for removing static electricity from the surface of the workpiece; the air blowing port faces the conveying end face of the conveying device.

3. The environmentally friendly paint spraying production line according to claim 1, characterized in that: The paint spraying device includes a paint spraying room, a paint spraying mechanism and the conveying device. The paint spraying mechanism includes a paint spraying gun and a paint spraying gun driving assembly. The paint spraying gun is installed in the paint spraying room and is located above the conveying end surface of the conveying device; the paint spraying gun driving assembly is used to drive the paint spraying gun to move in a paint spraying direction, and the paint spraying direction is perpendicular to the conveying direction of the workpiece conveying direction; the paint spraying gun driving assembly is also used to drive the paint spraying gun to move in the height direction of the paint spraying room.

4. The environmentally friendly paint spraying production line according to claim 1, characterized in that: The detection device comprises a detection chamber and the conveying device. The top cover of the detection chamber is made of a transparent material. A plurality of detection cameras are arranged on the top of the detection chamber.

5. The environmentally friendly paint spraying production line according to claim 1, characterized in that: The microwave generating mechanism comprises a microwave generator and a microwave guide tube, both of which are fixedly connected to the top of the second drying chamber; the microwave generator is arranged at the end of the microwave guide tube; the extension direction of the microwave guide tube is perpendicular to the workpiece conveying direction; the microwave guide tube is used to conduct the microwaves generated by the microwave generator; and a plurality of cracks are arranged at the bottom end of the microwave guide tube.

6. The environmentally friendly paint spraying production line according to claim 5, characterized in that: The second drying chamber is also provided with a water loading mechanism and a microwave unloading mechanism, the water loading mechanism is used to absorb microwaves; the water loading mechanism is provided at the starting end and the end end of the conveying device; and a plurality of microwave unloading mechanisms are provided below the conveying end surface of the conveying device.

7. The environmentally friendly paint spraying production line according to claim 1, characterized in that: The environmentally friendly paint spraying production line also includes a curing device, a cleaning device, a paint spraying device, a detection device, a dehumidification device, a microwave drying device, a dehumidification device, and a curing device, which are distributed in sequence along the production line.

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