A metal hanger dip coating processing production line

Abstract

This invention relates to the field of metal hanger processing, specifically disclosing a metal hanger dip coating processing production line. The production line includes a heating furnace, a dip coating mechanism, a transfer mechanism, a rotating mechanism, and a hanger for hanging hangers. The heating furnace has a second heating channel and a first heating channel arranged vertically. Both the first and second heating channels are equipped with conveying devices for transporting the hangers along their lengths. The first heating channel has a first inlet and a first outlet at the front and rear ends of the heating furnace, respectively. The second heating channel has a second outlet and a second inlet at the front and rear ends of the heating furnace, respectively. This metal hanger dip coating processing production line reduces the space occupied by the equipment in the factory floor, while improving the uniformity of the dip coating liquid on the hanger surface, ensuring the quality of the dip coating.

Description

Technical Field

[0001] This invention relates to the field of metal hanger processing, and more particularly to a metal hanger dip coating processing production line. Background Technology

[0002] Clothes hangers are common household items, and they come in various types, including wooden, plastic, and metal hangers. Most metal hangers are made of bent steel wire, and to prevent oxidation and rust during use, their surface is usually coated with a plastic coating. Existing hanger coating equipment typically includes a first oven, a coating tank, and a second oven. During operation, the hangers are first placed in the first oven for preheating, then dipped in the coating tank, and finally placed in the second oven for leveling and solidification. However, this type of equipment, with the first oven, coating tank, and second oven arranged along the hanger's conveying direction, occupies a significant amount of factory floor space. Furthermore, directly placing the hangers in the second oven for solidification after dipping in the coating solution can lead to uneven coating thickness, affecting the overall coating quality. Summary of the Invention

[0003] The present invention aims to solve at least one of the aforementioned technical problems by providing a metal hanger dip coating production line that can reduce the space occupied by the equipment in the factory floor, while improving the uniformity of the dip coating liquid on the hanger surface and ensuring the quality of the dip coating.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a metal hanger dip coating processing production line, comprising a heating furnace, a dip coating mechanism, a transfer mechanism, a rotating mechanism, and a hanger for hanging hangers. The heating furnace has a second heating channel and a first heating channel arranged vertically. Both the first and second heating channels are provided with conveying devices for conveying hangers along their lengths. The first heating channel is provided with a first inlet and a first outlet at the front and rear ends of the heating furnace, respectively. The second heating channel is provided with a second outlet and a second inlet at the front and rear ends of the heating furnace, respectively. The dip coating mechanism is located at the edge of the first outlet and is used to dip coats sent out from the first outlet. The transfer mechanism is used to transport the hangers at the first outlet to the dip coating mechanism and to transport the dip-coated hangers to the rotating mechanism. The rotating mechanism is located at the second inlet and is used to drive the hangers to rotate.

[0005] Preferably, the dip coating mechanism includes a dip coating tank for holding the dip coating liquid and a lifting mechanism disposed above the dip coating tank.

[0006] Preferably, the dip coating tank includes a tank body and a film scraping device disposed at an opening at the top of the tank body.

[0007] Preferably, the lifting mechanism includes a mounting frame, a bracket, and a driving device. The bracket is movably mounted on the mounting frame, and the driving device is connected to the bracket in a transmission manner, and can drive the bracket to move up and down relative to the mounting frame.

[0008] Preferably, the transfer mechanism includes a horizontal conveying mechanism and a vertical conveying mechanism. The horizontal conveying mechanism includes two horizontally arranged horizontal conveying tracks, each equipped with a pusher for pushing the hanger to move along the length of the horizontal conveying track. The vertical conveying mechanism includes a vertically arranged vertical conveying track and a lifting frame movably arranged on the vertical conveying track, which can move up and down along the vertical conveying track.

[0009] Preferably, the pusher includes a frame and a push rod, the upper end of the push rod is rotatably connected to the frame, and the frame is provided with a limiting member for limiting the rotation of the push rod.

[0010] Preferably, the rotating mechanism includes a rotating frame rotatably installed inside the heating furnace, and a drive motor for driving the rotating frame to rotate. The rotating frame has sliding grooves on both sides that are respectively slidably engaged with the sides of the hanging bracket, and clamping devices for clamping and fixing the hanging bracket are installed in the sliding grooves.

[0011] Preferably, it also includes a feeding mechanism, which includes a slide rail extending to the first feed inlet and a conveyor frame disposed on the slide rail. A support frame is movably mounted on the conveyor frame and the support frame is capable of moving up and down relative to the conveyor frame.

[0012] Preferably, it also includes a discharge mechanism, which includes a lifting frame disposed at the second discharge port and a placement frame disposed below the lifting frame, wherein a pusher frame capable of moving along its length is movably disposed on the placement frame.

[0013] Preferably, both the first heating channel and the second heating channel are equipped with pushers for pushing the hanger to move along its length.

[0014] The beneficial effects are as follows: In the metal hanger dip coating processing production line of the present invention, the hangers are preheated through the first heating channel in the lower layer of the heating furnace, and then the preheated hangers are placed into the dip coating mechanism for dip coating treatment. The dip-coated hangers are then transported to the feed port of the second heating channel, and the hangers are rotated by a rotating mechanism. Finally, the hangers are dried through the second heating channel. Compared with existing dip coating equipment, the metal hanger dip coating processing production line of the present invention shortens the length of the entire production line by arranging the second heating channel and the first heating channel vertically in the heating furnace, thereby reducing the space occupied by the production line in the factory floor. At the same time, the uniformity of the dip coating liquid on the surface of the hangers can be improved by rotating the hangers by the rotating mechanism before drying, ensuring the dip coating quality of the hangers. Attached Figure Description

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a schematic diagram of the structure of a metal hanger dip coating processing production line according to the present invention;

[0017] Figure 2 This is a schematic diagram of the dip coating mechanism;

[0018] Figure 3 This is a schematic diagram of the structure of a dip coating tank from one perspective.

[0019] Figure 4 This is a schematic diagram of the dip coating tank from another perspective.

[0020] Figure 5 This is a schematic diagram of the scraper's structure;

[0021] Figure 6 This is a structural diagram of the pusher frame;

[0022] Figure 7 This is a schematic diagram of the rotating mechanism;

[0023] Figure 8 This is a schematic diagram of the feeding mechanism. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] like Figures 1 to 8As shown, a metal hanger dip coating processing production line includes a heating furnace 1, a dip coating mechanism 2, a transfer mechanism 3, a rotating mechanism 4, and a hanger 5 for hanging hangers. Specifically, a partition is provided in the middle of the heating furnace 1 to divide the interior of the heating furnace 1 into a second heating channel 6 and a first heating channel 7 arranged vertically. Both the first heating channel 7 and the second heating channel 6 are equipped with heating devices. The heating devices can adopt existing structures, such as heating tubes installed on the inner wall of the heating furnace 1 for heating. Both the first heating channel 7 and the second heating channel 6 have a conveyor for transporting the hangers 5 arranged along their length. The conveying device 8 can adopt an existing chain conveyor structure. The first heating channel 7 is located at the front and rear ends of the heating furnace 1, respectively, and is provided with a first inlet 9 and a first outlet 10. The second heating channel 6 is located at the front and rear ends of the heating furnace 1, respectively, and is provided with a second outlet 11 and a second inlet 12. That is, the first inlet 9 is located below the second outlet 11, and the first outlet 10 is located below the second inlet 12. The first inlet 9, the first outlet 10, the second inlet 12, and the second outlet 11 are all equipped with movable doors that can be closed. The dip coating mechanism 2 is located at the edge of the first outlet 10 and is used to dip coat the hangers sent out from the first outlet 10. The transfer mechanism 3 is used to transport the hangers 5 at the first outlet 10 to the dip coating mechanism 2 and to transport the dip-coated hangers 5 to the rotating mechanism 4. The rotating mechanism 4 is located at the second inlet 12 and is used to drive the hangers 5 to rotate. The hanger 5 includes a square outer frame and a fixed rod arranged in parallel within the outer frame. Several movable blocks and a locking block are movably installed on the fixed rod. A gap for hanging the hanger is formed between two movable blocks. The locking block is threadedly connected to the fixed rod and is located at one end of the fixed rod. By tightening the locking block, the hanger can be locked and fixed in the gap between the two movable blocks.

[0028] Compared with existing dip coating equipment, the metal hanger dip coating production line of the present invention shortens the length of the entire production line by arranging the second heating channel 6 and the first heating channel 7 vertically inside the heating furnace 1, thereby reducing the space occupied by the production line in the factory floor. At the same time, by rotating the hanger through the rotating mechanism 4 before drying, the uniformity of the dip coating liquid on the surface of the hanger can be improved, thereby ensuring the dip coating quality of the hanger.

[0029] In one specific embodiment, the dip coating mechanism 2 may include a dip coating tank 13 for holding dip coating liquid, and a lifting mechanism disposed above the dip coating tank 13. The lifting mechanism drives the hanger to move downward, so that the hanger hanging on the hanger 5 can be placed into the dip coating tank 13 for dip coating treatment. After the dip coating treatment is completed, the lifting mechanism drives the hanger to move upward, so that the dip-coated hanger can be taken out of the dip coating tank 13 for further processing. The dip coating tank 13 may include a tank body 14 and a scraping device disposed at the top opening of the tank body 14. Specifically, the tank body 14 may be square, and the top of the tank body 14 has a rectangular opening. A waste liquid discharge outlet 37 is provided on one side edge of the opening. Preferably, a support frame may be fixedly installed at the bottom of the tank body 14. By providing a support frame, it is convenient to fix the tank body 14 in place. The film scraping mechanism includes a scraper 38 and a driving device. The scraper 38 is arranged along the width direction of the tank 14, that is, the length direction of the scraper 38 is parallel to the width direction of the tank 14, and the length of the scraper 38 matches the width of the tank 14, so that the scraper 38 can completely scrape off the film in the width direction of the tank 14. The driving device is connected to the scraper 38 and can drive the scraper 38 to move towards or away from the waste liquid outlet 37 along the length direction of the tank 14. By setting the scraper 38 and the driving device, the lower end of the scraper 38 can extend into the upper liquid surface of the dip coating liquid. The driving device drives the scraper 38 to move towards or away from the waste liquid outlet 37, so that the scraper 38 can uniformly scrape the film on the upper surface of the dip coating liquid to the waste liquid outlet 37 and discharge it outside the tank 14 through the waste liquid outlet 37. This effectively avoids the metal hanger from being covered with film during the dip coating process and ensures the quality of the dip coating process of the metal hanger.

[0030] In one embodiment, the scraper 38 may have connecting portions 39 at both ends that slide and engage with the two sides of the top opening of the groove 14, respectively. One connecting portion 39 extends out of the groove 14 and is connected to the drive device. Specifically, the scraper 38 includes a connecting rod, and a plate for scraping the conjunctiva is provided in the middle of the connecting rod. The portions of the connecting rod extending out of the plate form the connecting portions 39. By providing connecting portions 39 that slide and engage with the top opening edge of the groove 14, the stability of the scraper 38 during movement is improved.

[0031] In another specific embodiment, the driving device may include a motor, a driving wheel, a driven wheel, a chain, and a connecting block 44. Both the driving wheel and the driven wheel are rotatably connected to the groove 14 via shafts and are driven by a chain. The motor is driven by the driving wheel, and the connecting block 44 is fixedly mounted on the chain. The scraper 38 is fixedly connected to the connecting block 44. Specifically, both the driving wheel and the driven wheel can be rotatably mounted on the outer wall of the groove 14 via shafts. The chain is wound around the driving wheel and the driven wheel along the length of the groove 14, so that when the motor drives the driving wheel to rotate in both directions, the driving wheel can drive the chain to reciprocate along the length of the groove 14, thereby enabling the connecting block 44 fixedly mounted on the chain to drive the scraper 38 to reciprocate along the length of the groove 14. In the above embodiment of the driving device, the driving wheel and the driven wheel can also be driven by a belt, and the connecting block 44 is fixedly mounted on the belt.

[0032] Furthermore, a slide rod 40 can be fixedly installed on the outer side of the trough 14 along its length direction, and the connecting block 44 is slidably connected to the slide rod 40 to improve the stability of the movement of the connecting block 44, thereby improving the stability of the movement of the scraper 38.

[0033] In one preferred embodiment, a liquid collection tank 41 may be provided around the opening edge of the top of the tank 14, and a waste liquid outlet 37 is provided at the end of the liquid collection tank 41. By providing the liquid collection tank 41, the dip coating liquid overflowing from the tank 14 and the film scraped off by the scraper 38 can be collected uniformly through the liquid collection tank 41 and discharged into a collection container through the waste liquid outlet 37 at the end of the liquid collection tank 41. This effectively avoids the dip coating liquid and film in the tank 14 from flowing to the workshop floor and improves the environmental hygiene of the workshop.

[0034] Furthermore, the waste liquid outlet 37 can be connected to a liquid guiding channel 42. The liquid guiding channel 42 is set at an angle downward, and the width of the liquid guiding channel 42 gradually decreases from the top end to the bottom end. By setting the liquid guiding channel 42 to guide the waste liquid, it is beneficial for the waste liquid to flow through the liquid guiding channel 42 to the collection container for collection and treatment.

[0035] In another preferred embodiment, the lower end of the scraper 38 may be provided with a plurality of guide holes 43 along its length. Specifically, the guide holes 43 may be square through holes, with one end extending to the middle of the scraper 38 and the other end extending to the lower end face of the scraper 38. When the scraper 38 is installed, the part with the guide holes 43 can be inserted into the dip coating liquid, while the part without the guide holes 43 is exposed above the surface of the dip coating liquid. This reduces the resistance of the dip coating liquid to the scraper 38 during its movement and also reduces the disturbance caused by the scraper 38 to the dip coating liquid, effectively preventing large waves from appearing on the surface of the dip coating liquid and thus preventing the dip coating liquid from overflowing from the edge of the tank 14.

[0036] In a more preferred embodiment, the tank 14 is equipped with a heating device for heating the dip coating liquid to achieve heating and heat preservation of the dip coating liquid, thereby ensuring the quality of the dip coating process. Specifically, a heating pipe can be installed inside the tank wall of the tank 14 to heat the dip coating liquid. In order to accurately control the heating temperature, a temperature detection device can be set to check the temperature of the dip coating liquid, and the heating device is controlled to heat the dip coating liquid by the temperature signal detected by the dip coating liquid.

[0037] In another specific embodiment, the lifting mechanism may include a mounting frame 15, a bracket 16, and a driving device. The mounting frame 15 may be fixedly connected to the groove 14, and the bracket 16 may be movably mounted on the mounting frame 15. Specifically, the bracket 16 includes two horizontally arranged support plates and a connecting plate. The two support plates are respectively fixedly mounted on both ends of the connecting plate, and both support plates are connected to sliders. The mounting frame 15 is provided with two vertical rails, and the sliders on the two support plates are respectively slidably engaged with the two rails. The driving device is connected to the bracket 16 and can drive the bracket 16 to move up and down relative to the mounting frame 15. Specifically, the driving device may adopt an existing chain drive structure, with the slider fixedly mounted on the chain. By driving the chain to rotate, the slider is driven to move up and down along the rails.

[0038] In one embodiment, the transfer mechanism 3 may include a horizontal conveying mechanism and a vertical conveying mechanism. The horizontal conveying mechanism includes two horizontally arranged horizontal conveying tracks, each equipped with a pusher 19 for pushing the hanger 5 to move along the length of the horizontal conveying track. The vertical conveying mechanism includes a vertically arranged vertical conveying track 20 and a lifting frame 21 movably mounted on the vertical conveying track 20. The lifting frame 21 can move up and down along the vertical conveying track 20. Specifically, the vertical movement of the lifting frame 21 can be driven by an existing chain drive structure. The lower horizontal conveying track is a first horizontal conveying track 17, and the upper horizontal conveying track is a second horizontal conveying track 18. Two first horizontal conveying tracks 17 are arranged in parallel, with one end of each track extending to the first discharge port 10 and the other end extending to the side of the lifting frame 21. Two second horizontal conveying tracks 18 are also arranged in parallel, with one end of each track extending to the side of the lifting frame 21. The feed is directed to the second feed inlet 12, and extends to the side of the lifting frame 21. During processing, the pusher 19 is driven by a chain drive structure and can move along the horizontal conveying track. The two sides of the lower pusher 19 are slidably engaged with the two first horizontal conveying tracks 17, and the two sides of the upper pusher 19 are slidably engaged with the two second horizontal conveying tracks 18. The first horizontal conveying track 17 and the second horizontal conveying track 18 are both horizontally provided with guide rails 36 that can slide with the hanger 5. The pusher 19 on the first horizontal conveying track 17 can push the hanger 5 at the first discharge port 10 onto the bracket of the dip coating mechanism 2. After the dip coating process is completed, the pusher 19 on the first horizontal conveying track 17 can push the hanger 5 on the dip coating mechanism 2 onto the lower guide rail 36. Then, the lifting frame 21 lifts the hanger 5 to the same height as the upper guide rail 36. Finally, the pusher 19 on the second horizontal conveying track 18 pushes the hanger 5 along the guide rail 36 onto the rotating mechanism 4.

[0039] More specifically, the pusher 19 may include a frame 22 and a push rod 23. The frame 22 is slidably coupled to the horizontal conveying track and is connected to a drive device. The drive device can adopt an existing chain drive structure. The drive device can drive the pusher 19 to move along the horizontal conveying track. The upper end of the push rod 23 can be rotatably connected to the frame 22 through a rotating shaft. The frame 22 is provided with a limiting member 24 for limiting the rotation of the push rod 23. When the pusher 19 moves forward, the limiting member 24 limits the push rod 23, so that the lower end of the push rod 23 cannot rotate backward. This allows the push rod 23 to push the hanging frame 5 forward along the conveying direction. When the hanging frame 5 moves to the set position, the pusher 19 moves backward. At this time, the limiting member 24 does not limit the push rod 23, so that the lower end of the push rod 23 can rotate forward, thereby allowing the push rod 23 to disengage from the hanging frame 5.

[0040] In another embodiment, the rotating mechanism 4 may include a rotating frame 25 rotatably mounted inside the heating furnace 1, and a drive motor 26 for driving the rotating frame 25 to rotate. The rotating frame 25 has sliding grooves 27 on both sides that slide and engage with the sides of the hanging bracket 5, respectively. Clamping devices 28 for clamping and fixing the hanging bracket 5 are installed in the sliding grooves 27. Specifically, the rotating frame 25 encloses the main frame body, and two parallel sliding grooves 27 are provided at both ends of the main frame body. Rotating shafts that rotatably engage with the inner wall of the heating furnace 1 are provided on the sidewalls of the two sliding grooves 27 facing away from the main frame body 22, and one of the rotating shafts extends out of the heating furnace 1 and is connected to the drive motor 26 for transmission. The drive motor 26 drives the rotating frame 25 to rotate around the axis of the rotating shaft. The clamping device 28 includes a clamping plate disposed in the slide groove 27 and a cylinder that drives the clamping plate to move. The cylinder is fixed on the outer wall of the slide groove 27. The piston rod of the cylinder extends through the through hole on the side wall of the slide groove 27 into the slide groove 27 and is fixedly connected to the clamping plate. The transfer mechanism 3 pushes the hanger 5 into the slide groove 27. The cylinder drives the clamping plate to move toward the outer wall of the hanger 5, thereby clamping and fixing the hanger 5 in the slide groove 27. Then, the drive motor 26 drives the rotating frame 25 to rotate the hanger on the hanger 5, thereby improving the uniformity of the dip coating liquid on the hanger.

[0041] In one preferred embodiment, the processing line of this application may further include a feeding mechanism 34. The feeding mechanism 34 includes a slide rail 29 extending to the first feed port 9 and a conveyor frame 30 disposed on the slide rail 29. A support frame 31 is movably mounted on the conveyor frame 30. The support frame 31 can move up and down relative to the conveyor frame 30. Specifically, the bottom of the conveyor frame 30 is provided with a wheel that cooperates with the slide rail 29. The wheel is rotatably mounted on the conveyor frame 30 through an axle connected to a motor. The motor drives the wheel to rotate, so that the conveyor frame 30 moves along the slide rail 29 toward or away from the first feed port 9. The support frame 31 is connected to a chain drive structure, which can drive the support frame 31 to move in the vertical direction. During processing, a hanger 5 with a hanger can be placed on the support frame 31. The hanger is conveyed to the first feed port 9 by the conveyor frame 30, and then the hanger is lifted to the height of the first feed port 9 by the support frame 31 so as to send the hanger into the first heating channel 7.

[0042] In another preferred embodiment, a discharge mechanism 35 may be included. The discharge mechanism 35 includes a lifting frame 32 disposed at the second discharge port 11. The lifting frame 32 is movably mounted at the second discharge port 11 via a chain drive structure. A placement frame 33 is disposed below the lifting frame 32. A pusher frame 19 that can move along its length is movably disposed on the placement frame 33. The lifting frame 32 is movably mounted at the second discharge port 11 via a chain drive structure. The lifting frame 32 can lower the dried clothes hangers to a certain height, and then the pusher frame 19 pushes the clothes hangers onto the placement frame 33.

[0043] In a more preferred embodiment, both the first heating channel 7 and the second heating channel 6 are equipped with pushers 19 for pushing the hanger 5 along its length direction, so as to push the hanger onto the conveying device 8 in the first heating channel 7 and the second heating channel 6.

[0044] In use, the metal hanger dip coating production line of this application places the hanger 5, on which the hanger is fixedly hung, on the conveyor frame 30. The conveyor frame 30 transports the hanger 5 to the first feed port 9. Then, the pusher frame 19 in the first heating channel 7 pushes the hanger 5 into the first heating channel 7 for preheating. The conveyor device 8 in the first heating channel 7 drives the hanger 5 to move along the length of the first heating channel 7 to the first discharge port 10. The pusher frame 19 on the first horizontal conveyor track 17 pushes the hanger 5 at the first discharge port 10 onto the bracket 16. By driving the bracket 16 to move downward, the hanger is immersed in the dip coating liquid for dip coating treatment. After the dip coating treatment is completed, the driveer 16 moves upward, so that the hanger is removed from the dip coating liquid. Then, the pusher frame 19 on the first horizontal conveyor track 17 pushes the hanger 5 onto the bracket 16. The frame 19 pushes the hanger 5 onto the lower guide rail 36, and the lifting frame 21 lifts the hanger 5 to the height of the upper guide rail 36. Then, the pusher 19 on the second horizontal conveying track 18 pushes the hanger 5 along the guide rail 36 to the rotating mechanism 4 for rotation. Subsequently, the pusher 19 in the second heating channel 6 pushes the hanger 5 from the second feed port 12 into the second heating channel 6 for drying. The conveying device 8 in the second heating channel 6 drives the hanger 5 to move along the length of the second heating channel 6 to the second discharge port 11. Finally, the lifting frame 32 receives the hanger 5 conveyed from the second discharge port 11 and lowers the hanger 5 to a certain height so that the pusher 19 can push the hanger 5 onto the display rack 33, thus realizing the entire dip-coating process of the hanger.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the technical solutions of the present invention.

Claims

1. A metal hanger dip-coating processing production line, characterized in that, The system includes a heating furnace (1), a dip coating mechanism (2), a transfer mechanism (3), a rotating mechanism (4), and a hanging rack (5) for hanging clothes hangers. The heating furnace (1) has a second heating channel (6) and a first heating channel (7) arranged vertically. Both the first heating channel (7) and the second heating channel (6) are equipped with a conveying device (8) for conveying the hanging rack (5) along their length. Both the first heating channel (7) and the second heating channel (6) are equipped with a pusher (19) for pushing the hanging rack (5) to move along their length. The first heating channel (7) is located at the front end and the rear end of the heating furnace (1) and is provided with a first feed inlet (9) and a first discharge outlet (10) respectively. The second heating channel (6) is located at the front end of the heating furnace (1). The first outlet (11) and the second inlet (12) are respectively provided at the rear end. The dip coating mechanism (2) is located at the edge of the first outlet (10) and is used to dip coaters sent out from the first outlet (10). The transfer mechanism (3) is used to transport the hangers (5) at the first outlet (10) to the dip coating mechanism (2) and to transport the dip-coated hangers (5) to the rotating mechanism (4). The rotating mechanism (4) is located at the second inlet (12) and is used to drive the hangers (5) to rotate. The dip coating mechanism (2) includes a dip coating tank (13) for holding dip coating liquid and a lifting mechanism located above the dip coating tank (13). The dip coating tank (13) includes a tank body (14) and a lifting mechanism located above the tank body. (14) A top-opening scraping device, the tank (14) is square, and the top of the tank (14) has a rectangular opening. A waste liquid outlet (37) is provided on one side edge of the opening. The scraping device includes a scraper (38) and a driving device. The scraper (38) is arranged along the width direction of the tank (14), and the length of the scraper (38) matches the width of the tank (14). The driving device is connected to the scraper (38) and can drive the scraper (38) to move towards or away from the waste liquid outlet (37) along the length direction of the tank (14). The transfer mechanism (3) includes a horizontal conveying mechanism and a vertical conveying mechanism. The horizontal conveying mechanism includes two horizontally arranged horizontal conveying tracks. Both horizontal conveying tracks are provided with a device for... The pusher (19) that pushes the hanger (5) to move along the length of the horizontal conveying track, the vertical conveying mechanism includes a vertically set vertical conveying track (20) and a lifting frame (21) that is movably set on the vertical conveying track (20). The lifting frame (21) can move up and down along the vertical conveying track (20). The pusher (19) includes a frame (22) and a push rod (23). The upper end of the push rod (23) is rotatably connected to the frame (22), and a limiting member (24) is provided on the frame (22) to limit the rotation of the push rod (23). The rotating mechanism (4) includes a rotating frame (25) that is rotatably installed in the heating furnace (1) and a drive motor (26) that drives the rotating frame (25) to rotate.The rotating frame (25) has sliding grooves (27) on both sides that slide and engage with the sides of the hanging bracket (5), and clamping devices (28) for clamping and fixing the hanging bracket (5) are installed in the sliding grooves (27).

2. The metal hanger dip coating processing production line according to claim 1, characterized in that, The lifting mechanism includes a mounting frame (15), a bracket (16) and a driving device. The bracket (16) is movably mounted on the mounting frame (15). The driving device is connected to the bracket (16) and can drive the bracket (16) to move up and down relative to the mounting frame (15).

3. The metal hanger dip coating processing production line according to claim 1, characterized in that, It also includes a feeding mechanism (34), which includes a slide rail (29) extending to the first feed port (9) and a conveyor frame (30) disposed on the slide rail (29). A support frame (31) is movably mounted on the conveyor frame (30) and the support frame (31) is capable of moving up and down relative to the conveyor frame (30).

4. The metal hanger dip coating processing production line according to claim 1, characterized in that, It also includes a discharge mechanism (35), which includes a lifting frame (32) provided at the second discharge port (11) and a placement frame (33) provided below the lifting frame (32). A pusher frame (19) that can move along its length is movably provided on the placement frame (33).

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