Hardware product surface spraying and drying device

Abstract

The utility model relates to the technical field of hardware product processing, in particular to a hardware product surface spraying and drying device which comprises an operation box, a rotating shaft is arranged in the middle of the operation box through a bearing, a rotating motor matched with the rotating shaft is arranged on the top of the operation box, multiple sets of hanging rods are arranged on the rotating shaft, and hanging shafts are arranged at the tail ends of the hanging rods through bearings. A hanging frame is arranged at the bottom end of the hanging shaft, a plurality of partition plates capable of being lifted and folded are arranged in the operation box, a folding driving structure is arranged in cooperation with the partition plates, the operation box is divided into a feeding area, a spraying area, a drying area and a discharging area through the partition plates, a spraying pipe is arranged in the spraying area, and an adjusting assembly is arranged in cooperation with the spraying pipe. Two groups of blowpipes are arranged in the drying area, are respectively arranged on the outer side of the rotating shaft and the inner wall of the drying area, and are connected with an external hot air source. The utility model has the beneficial effects that the continuous operation in a small space can be realized, and the use convenience and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of hardware product processing technology, and more specifically, it relates to a hardware product surface spraying and drying device. Background Technology

[0002] Hardware products are a general term for various tools, accessories, and daily necessities made from metal materials, including metal brackets, angle brackets, saws, files, steel structure connectors, and so on. They are mostly made of steel, copper, aluminum, and alloys, and are characterized by durability, rust resistance, and strong load-bearing capacity. They are widely used in building decoration, furniture manufacturing, machinery and equipment, and daily life.

[0003] In the production and processing of hardware products, surface coating is one of the key processes, directly affecting the product's corrosion resistance, wear resistance, and appearance quality. Currently, two main methods are used in the coating of small and medium-sized hardware products:

[0004] The first method is manual hanging spraying, where operators suspend the hardware parts one by one in the spraying box, hold a spray gun to spray them, and then transfer them to the drying process. This method has a simple equipment structure, small footprint, and low investment cost, making it suitable for small-batch production. However, its production efficiency is low because each product must complete the entire process of loading, spraying, drying, and unloading before the next one can be processed. This involves high manual intervention, high labor intensity, and the spraying quality is greatly affected by the worker's skill level, making it difficult to guarantee consistency.

[0005] The second method is a circulating chain suspension conveyor spraying system. This system uses a conveyor chain to continuously transport hardware parts, creating a streamlined process for loading, spraying, drying, and unloading. This method offers a high degree of automation and significantly improves production efficiency, making it suitable for mass production. However, the system's conveyor tracks, spray booths, and drying ovens require considerable installation space, and the initial investment is high. This makes it less suitable for small workshops or companies with limited space, potentially leading to low space utilization or excessively high modification costs. Utility Model Content

[0006] The purpose of this utility model is to provide a surface coating and drying device for hardware products to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a surface spraying and drying device for hardware products, comprising an operation box, a rotating shaft mounted on the middle of the operation box via a bearing, a rotating motor mounted on the top of the operation box in conjunction with the rotating shaft, multiple sets of hanging rods mounted on the rotating shaft, a hanging shaft mounted on the tail end of each hanging rod via a bearing, a hanging bracket mounted on the bottom end of each hanging shaft, multiple liftable and foldable partitions inside the operation box, and a folding drive structure mounted in conjunction with the partitions, the partitions dividing the operation box into a feeding area, a spraying area, a drying area, and a discharging area, a spraying pipe mounted in the spraying area, and an adjustment component mounted in conjunction with the spraying pipe, two sets of air blowers mounted in the drying area, the two sets of air blowers respectively mounted on the outer side of the rotating shaft and on the inner wall of the drying area, and the air blowers connected to an external hot air source.

[0008] The present invention is further configured such that the adjustment component includes a mounting frame, the outer side of which is provided with a lifting adjustment structure, and the inner side is provided with a spray frame through the cooperation of a shaft and a bearing. An adjustment motor is provided in conjunction with the spray frame. The spray pipe is set on the spray frame and is connected to a paint source through a hose structure. When the adjustment motor is started, the rotation of the spray frame can be controlled by the adjustment motor, and the rotation of the spray pipe can be controlled by the spray frame, thereby realizing flexible adjustment of the spraying angle of the spray pipe. The spray pipe is provided with a nozzle for spraying paint.

[0009] The present invention is further configured such that the lifting and adjusting structure includes a linear motor, the linear motor is disposed on the inner wall of the spraying area, a slide table is mounted on the linear motor, the mounting bracket is disposed on the slide table, and a telescopic protective cover is provided between the slide table and the linear motor. The linear motor controls the lifting and lowering of the slide table, and the slide table controls the lifting and lowering of the mounting bracket, thereby realizing the lifting and lowering adjustment of the spraying pipe, so as to perform spraying operations on hardware parts at different heights. The telescopic protective cover can improve the protection of the electric slide rail and avoid the influence of dust generated during spraying on the slide rail structure of the linear motor.

[0010] The present invention is further configured such that the adjustment component is provided in two sets on the inner wall of the spraying area, forming a front spraying group and a back spraying group respectively, and the top of the operation box is provided with an automatic flipping structure in conjunction with the back spraying group and the hanging shaft.

[0011] The present invention is further configured such that the automatic flipping structure includes a gear, the gear is located at the top of the hanging shaft, and the top of the operation box is provided with an arc-shaped rack. The arc-shaped rack is coaxial with the rotating shaft and meshes with the gear. After the front of the hardware is painted, the rotating shaft is controlled to rotate by rotating the motor, thereby causing the hanging rod to carry the hanging shaft to rotate. When the hanging shaft rotates, it will drive the gear to rotate around the axis of the rotating shaft. When the gear rotates to the position of the arc-shaped rack, it will automatically mesh with the teeth on the arc-shaped rack. Thus, in the subsequent rotation process, while the gear revolves relative to the rotating shaft, it will also drive the hanging shaft to rotate on its own axis, thereby realizing the rotation of the hanging shaft. This allows the hanging shaft to cooperate with the hanging bracket to realize the automatic flipping of the hardware for the back painting operation.

[0012] The present invention is further configured such that the partition includes multiple partitions that can be folded and connected to each other, and a hanging rope is slidably threaded between the partitions. The bottom end of the hanging rope is fixedly connected to the bottommost partition, and the top end slides to the top of the control box. Through the cooperation of multiple sets of partitions and hanging ropes, the partition can be conveniently, flexibly and quickly folded, stored and unfolded in the control box.

[0013] The present invention is further configured such that the folding drive structure includes a winding shaft, which is mounted on the top of the operation box via a bearing seat and is connected to a drive motor. Each set of lifting ropes is equipped with a winding wheel on the winding shaft, and a guide wheel is mounted on the operation box in conjunction with the lifting ropes. A synchronous belt drive structure is provided between two adjacent sets of winding shafts. When the drive motor is started, it controls the winding shaft to drive the winding wheel to rotate, thereby winding the lifting ropes. When the lifting ropes are wound up, the partitions can be folded and stored on the top of the operation box. This facilitates the movement of the rotating shaft to the next processing area by means of the hanging rod, hanging shaft, and hanging frame. Then, the drive motor is controlled in reverse to unwind the lifting ropes, thereby allowing the partitions to reopen and separating different operation areas, especially between the spraying area and the drying area, the loading area and the spraying area, and the drying area and the unloading area. The loading area and the unloading area can be separated without partitions.

[0014] The present invention is further configured such that a suction hood is provided on the top of the spraying area, a suction pipe is provided on the suction hood, and a negative pressure dust collection device is connected to the suction pipe. During spraying, the excess paint can be sucked away by the cooperation of the suction hood and the suction pipe, thereby reducing the amount of waste left in the spraying area.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model utilizes a rotating shaft to drive multiple sets of hanging rods, enabling automated flow of hardware parts across four processes: loading, spraying, drying, and unloading, forming a continuous production line. Compared to traditional manual step-by-step operation, this device can perform different processes simultaneously, significantly improving production efficiency. The unique liftable and foldable partition design allows for temporary folding during workpiece rotation and re-unfolding to separate functional areas after rotation. This avoids the large space occupation problem of traditional chain conveyor lines and resolves the contradiction of fixed partitions hindering flow. The device has a compact overall structure, making it particularly suitable for small and medium-sized workshops, achieving automated production line functionality within limited space.

[0017] 2. In this utility model, the spraying area employs a front spraying group and a back spraying group to form a dual-set adjustable assembly with an automatic flipping mechanism. Through gear-arc rack meshing, the workpiece can rotate 180°, ensuring double-sided spraying without dead angles. The spraying pipe is equipped with a multi-degree-of-freedom adjustment system, with a linear motor controlling vertical lifting and an adjusting motor driving the spraying frame rotation, allowing for flexible adjustment of nozzle angle and height to adapt to complex hardware contours. The drying area adopts a dual-path circumferential airflow layout, forming cross-flow hot air convection. This, combined with the temperature control system in existing technologies, improves the drying effect of hardware, resulting in higher efficiency than traditional single-sided drying. The addition of a suction hood and negative pressure dust collection equipment effectively recovers overspray paint, reducing environmental pollution.

[0018] 3. This utility model has a compact structure, which avoids the low operating efficiency of small spraying equipment in the prior art, which requires manual operation to complete the feeding, spraying, drying and unloading procedures step by step, and also avoids the large space occupied by large chain conveyor equipment in the prior art. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a surface coating and drying device for hardware products according to this utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of a surface coating and drying device for hardware products according to this utility model. Figure 2 ;

[0021] Figure 3 This is a top view of the overall structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the cooperation structure between the front spraying group, the back spraying group and the hanging bracket in this utility model;

[0023] Figure 5 This is a schematic diagram of the installation structure of the spray pipe in this utility model;

[0024] Figure 6This is a schematic diagram of the overall structure of the partition plate of this utility model;

[0025] Figure 7 This is a schematic diagram of the fit between the gear and the arc-shaped rack in this utility model.

[0026] The components represented by each number in the attached diagram are listed below: 1. Control box; 2. Rotating shaft; 3. Rotating motor; 4. Hanging rod; 5. Hanging shaft; 6. Hanging bracket; 7. Partition; 8. Loading area; 9. Spraying area; 10. Drying area; 11. Unloading area; 12. Spraying pipe; 13. Air blower; 14. Mounting bracket; 15. Spraying frame; 16. Adjusting motor; 17. Linear motor; 18. Slide table; 19. Telescopic protective cover; 20. Front spraying assembly; 21. Back spraying assembly; 22. Gear; 23. Arc rack; 24. Partition; 25. Suspension rope; 26. Rewinding shaft; 27. Drive motor; 28. Rewinding wheel; 29. ​​Guide wheel; 30. Synchronous belt drive structure; 31. Suction hood; 32. Suction pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides a technical solution: such as Figures 1-7 The device shown is a surface coating and drying device for hardware products. It includes an operation box 1. A rotating shaft 2 is mounted on the middle of the operation box 1 via a bearing. A rotating motor 3 is mounted on the top of the operation box 1 in conjunction with the rotating shaft 2. Multiple hanging rods 4 are mounted on the rotating shaft 2. A hanging shaft 5 is mounted on the tail end of the hanging rod 4 via a bearing. A hanging bracket 6 is mounted on the bottom end of the hanging shaft 5. Multiple liftable and foldable partitions 7 are provided inside the operation box 1. A folding drive structure is provided in conjunction with the partitions 7. The partitions 7 divide the operation box 1 into a feeding area 8, a spraying area 9, a drying area 10, and a discharging area 11. A spraying pipe 12 is provided in the spraying area 9. An adjustment component is provided in conjunction with the spraying pipe 12. Two sets of air blowers 13 are provided in the drying area 10. The two sets of air blowers 13 are respectively located on the outside of the rotating shaft 2 and on the inner wall of the drying area 10. The air blowers 13 are connected to an external hot air source.

[0029] Please see Figures 1-7As one implementation of the adjustment component: the adjustment component includes a mounting frame 14, a lifting adjustment structure is provided on the outer side of the mounting frame 14, and a spray frame 15 is provided on the inner side through the cooperation of a shaft and a bearing. An adjustment motor 16 is provided in cooperation with the spray frame 15. The spray pipe 12 is provided on the spray frame 15 and is connected to the paint source through a hose structure.

[0030] Start the adjusting motor 16. The adjusting motor 16 can control the rotation of the spray frame 15. The spray frame 15 can control the rotation of the spray pipe 12, thereby realizing the flexible adjustment of the spraying angle of the spray pipe 12. The spray pipe 12 is equipped with nozzles for spraying paint.

[0031] Please see Figures 1-7 As one implementation of the lifting adjustment structure: the lifting adjustment structure includes a linear motor 17, which is installed on the inner wall of the spraying area 9. A slide table 18 is mounted on the linear motor 17, and a mounting bracket 14 is installed on the slide table 18. A telescopic protective cover 19 is provided between the slide table 18 and the linear motor 17.

[0032] The linear motor 17 controls the lifting and lowering of the slide table 18, which in turn controls the lifting and lowering of the mounting bracket 14, thereby adjusting the lifting and lowering of the spray pipe 12 to perform spraying operations on hardware parts at different heights. The telescopic protective cover 19 can improve the protection of the slide rail structure on the linear motor 17 and prevent dust generated during spraying from affecting the linear motor 17.

[0033] Please see Figures 1-7 As one implementation of the adjustment component: the adjustment component is provided with two sets on the inner wall of the spraying area 9, forming a front spraying group 20 and a back spraying group 21 respectively. The top of the operation box 1 is equipped with an automatic flipping structure in conjunction with the back spraying group 21 and the hanging shaft 5.

[0034] Please see Figures 1-7 As one implementation of the automatic flipping structure: the automatic flipping structure includes a gear 22, which is set at the top of the hanging shaft 5. An arc-shaped rack 23 is set at the top of the operation box 1. The arc-shaped rack 23 is coaxial with the rotating shaft 2 and meshes with the gear 22.

[0035] After the front of the hardware is painted, the rotating shaft 2 is rotated by the rotating motor 3, which causes the hanging rod 4 to carry the hanging shaft 5 to rotate. When the hanging shaft 5 rotates, it will drive the gear 22 to rotate around the axis of the rotating shaft 2. When the gear 22 rotates and moves to the position of the arc rack 23, it will automatically mesh with the teeth on the arc rack 23. In the subsequent rotation process, while the gear 22 revolves relative to the rotating shaft 2, it will also drive the hanging shaft 5 to rotate on its own axis, thereby realizing the rotation of the hanging shaft 5. This allows the hanging shaft 5 to cooperate with the hanging bracket 6 to realize the automatic flipping of the hardware for the back painting operation.

[0036] This structure can also be set in the drying zone 10 to achieve multi-angle air blowing drying, thereby improving the uniformity and thoroughness of drying.

[0037] Please see Figures 1-7 As one embodiment of the partition 7: the partition 7 includes partitions 24, multiple partitions 24 are provided and can be folded and connected to each other, and a hanging rope 25 is slidably passed through the partitions 24. The bottom end of the hanging rope 25 is fixedly connected to the bottommost partition 24, and the top end slides to the top of the operation box 1. Through the cooperation of multiple sets of partitions 24 and hanging ropes 25, the partition 7 can be conveniently, flexibly and quickly folded, stored and unfolded in the operation box 1.

[0038] The folding drive structure includes a winding shaft 26, which is mounted on the top of the operation box 1 via a bearing seat and is connected to a drive motor 27. Each set of lifting ropes 25 is equipped with a winding wheel 28 on the winding shaft 26. The operation box 1 is equipped with a guide wheel 29 in conjunction with the lifting ropes 25. A synchronous belt drive structure 30 is provided between two adjacent sets of winding shafts 26.

[0039] Start the drive motor 27, which controls the winding shaft 26 to drive the winding wheel 28 to rotate, and the winding wheel 28 can be used to wind up the suspension rope 25.

[0040] When the sling 25 is wound up, the partitions 24 can be folded together and stored on the top of the control box 1. This makes it easy for the rotating shaft 2 to carry the hardware to the next processing area through the cooperation of the hanging rod 4, the hanging shaft 5 and the hanging bracket 6.

[0041] Then, the drive motor 27 is controlled to run in reverse, so that the lifting rope 25 is unwound, thereby allowing the partition 7 to reopen and realize the separation of different operating areas, especially the separation between the spraying area 9 and the drying area 10, the loading area 8 and the spraying area 9, and the drying area 10 and the unloading area 11. Among them, the loading area 8 and the unloading area 11 can be separated without partition 7.

[0042] Here, the synchronous belt drive structure 30 uses a transmission method in which the synchronous pulley and the synchronous belt are driven by tooth meshing. The synchronous belt drive has the characteristics of constant transmission ratio and stable transmission. It is widely used in multi-axis synchronous drive, as should be known by those skilled in the art. This utility model will not elaborate on this aspect.

[0043] Please see Figures 1-7 As one implementation of the spraying area 9: A suction hood 31 is provided on the top of the spraying area 9, and a suction pipe 32 is provided on the suction hood 31. The suction pipe 32 is connected to a negative pressure dust collection device. During spraying, the excess paint can be sucked away by the cooperation of the suction hood 31 and the suction pipe 32, reducing the retention of waste in the spraying area 9.

[0044] In this invention, an air outlet can be provided in the drying zone 10, and a dust filter can be installed at the air outlet.

[0045] In summary, the specific workflow and working principle of this utility model are as follows:

[0046] This utility model uses a rotating shaft 2, and a hanging rod 4, a hanging shaft 5, and a hanging bracket 6 to install hardware parts on the rotating shaft 2. In use, the rotating motor 3 is started, and the rotating shaft 2 is rotated by the rotating motor 3. This causes the hanging rod 4 to carry the hanging shaft 5 to rotate with the rotating shaft 2. The hardware parts are rotated in the operating box 1 by the cooperation of the hanging shaft 5 and the hanging bracket 6. This allows the hardware parts to pass through the feeding area 8 for feeding, the spraying area 9 for spraying, the drying area 10 for drying, and finally the unloading area 11 for unloading. In this way, the work can be carried out in sections, and the feeding, spraying, drying and unloading of hardware parts can be completed simultaneously, reducing the interval between operations.

[0047] To avoid mutual interference between different work areas, this utility model sets a partition 7 between two adjacent work areas to separate them and make the partition 7 liftable and foldable. In this way, when a set of work is completed and the rotating shaft 2 needs to be rotated to move the workpiece of the upper process to the next set, the partition 7 is controlled to fold and store above the gear 22. After the hanging rod 4 carries the hardware over, the partition 7 is controlled to unfold, thus separating the two work areas and reducing mutual interference.

[0048] Furthermore, this utility model has a compact structure, which avoids the situation where small spraying equipment requires manual operation to complete the feeding, spraying, drying and unloading procedures step by step, resulting in low operating efficiency, and also avoids the situation where large chain conveyor equipment in the prior art occupies a large space.

[0049] When in use, this utility model can automatically suspend hardware parts on the hanger 6 using the existing robotic arm structure to achieve automated production. Alternatively, a manual position can be set between the loading area 8 and the unloading area 11 to reduce manual intervention and equipment costs. The choice can be made flexibly according to the needs.

[0050] Afterwards, after the hardware is controlled to enter the spraying area 9, the partition 7 is lowered to separate different operating areas, so that the hardware stops rotating when the front side is located in the front spraying group 20, and spraying of the hardware at different heights and angles is achieved through the corresponding spraying pipe 12.

[0051] After the front spraying is completed, control the hardware to continue running to the back spraying group 21 and stop. Then, control the corresponding spraying pipe 12 to spray the back of the hardware at different heights and angles.

[0052] Afterwards, the partition 7 is opened, allowing the rotating shaft 2 to carry the hanging rod 4, hanging shaft 5, hanging parts and hardware to the next operating area. Then, the partition 7 is closed again, so that the next batch of hardware enters the spraying area 9 for a new round of spraying. The hardware that has been sprayed in the previous round enters the drying area 10 for drying.

[0053] During this process, external drying airflow is delivered to the blower pipe 13, which is equipped with a blower head, so that the drying airflow is evenly blown onto the surface of the hardware parts to achieve drying of the hardware parts after spraying.

[0054] Then, the partition 7 is opened again to achieve a new round of rotation, so that the dried hardware parts can be unloaded in the unloading area 11, while the previously painted parts enter the drying area 10 for a new round of drying. This cycle is repeated to achieve continuous operation of hardware parts during the painting process and improve production efficiency.

[0055] In this utility model, the operation of related electrical components such as motors can be controlled by a controller according to a set program. The specific working process and working principle of this utility model have been described in detail. Based on the above working process and working principle, those skilled in the art should know its specific circuit connection structure. The circuit connection structure between related electrical components and the specific driver program are not within the scope of protection of this utility model, and this utility model will not elaborate on them.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface coating and drying device for hardware products, comprising an operation box (1), characterized in that: The operating box (1) has a rotating shaft (2) mounted on the middle via a bearing. A rotating motor (3) is mounted on the top of the operating box (1) in conjunction with the rotating shaft (2). Multiple sets of hanging rods (4) are mounted on the rotating shaft (2). A hanging shaft (5) is mounted on the tail end of each hanging rod (4) via a bearing. A hanging bracket (6) is mounted on the bottom end of each hanging shaft (5). The operating box (1) contains multiple liftable and foldable partitions (7), and a folding drive structure is provided in conjunction with each partition (7). (7) The operation box (1) is divided into a feeding area (8), a spraying area (9), a drying area (10) and a discharging area (11). The spraying area (9) is equipped with a spraying pipe (12) and an adjustment component is provided in conjunction with the spraying pipe (12). The drying area (10) is equipped with two sets of air blowers (13). The two sets of air blowers (13) are respectively located on the outside of the rotating shaft (2) and on the inner wall of the drying area (10). The air blowers (13) are connected to an external hot air source.

2. The surface coating and drying device for hardware products according to claim 1, characterized in that: The adjustment assembly includes a mounting frame (14), which has a lifting adjustment structure on its outer side and a spray frame (15) on its inner side through the cooperation of a shaft and a bearing. An adjustment motor (16) is also provided in cooperation with the spray frame (15). The spray pipe (12) is set on the spray frame (15) and is connected to the paint source through a flexible hose structure.

3. The surface coating and drying device for hardware products according to claim 2, characterized in that: The lifting and adjusting structure includes a linear motor (17), which is installed on the inner wall of the spraying area (9). A slide (18) is mounted on the linear motor (17), and the mounting bracket (14) is installed on the slide (18). A telescopic protective cover (19) is provided between the slide (18) and the linear motor (17).

4. The surface coating and drying device for hardware products according to claim 3, characterized in that: The adjustment components are provided in two sets on the inner wall of the spraying area (9), forming a front spraying group (20) and a back spraying group (21) respectively. The top of the operation box (1) is equipped with an automatic flipping structure in conjunction with the back spraying group (21) and the hanging shaft (5).

5. The surface coating and drying device for hardware products according to claim 4, characterized in that: The automatic flipping structure includes a gear (22), which is located at the top of the hanging shaft (5). The top of the operation box (1) is provided with an arc-shaped rack (23), which is coaxial with the rotating shaft (2) and meshes with the gear (22).

6. The surface coating and drying device for hardware products according to claim 1, characterized in that: The partition (7) includes partitions (24), and multiple partitions (24) are provided and can be folded and connected to each other. A hanging rope (25) is slidably threaded between the partitions (24). The bottom end of the hanging rope (25) is fixedly connected to the bottommost partition (24), and the top end slides to the top of the operation box (1).

7. The surface coating and drying device for hardware products according to claim 6, characterized in that: The folding drive structure includes a winding shaft (26), which is mounted on the top of the operation box (1) via a bearing seat and is connected to a drive motor (27). Each winding shaft (26) is equipped with a winding wheel (28) to cooperate with each set of lifting ropes (25). The operation box (1) is equipped with a guide wheel (29) to cooperate with the lifting ropes (25). A synchronous belt drive structure (30) is provided between two adjacent sets of winding shafts (26).

8. The surface coating and drying device for hardware products according to claim 1, characterized in that: The top of the spraying area (9) is provided with a suction hood (31), and a suction pipe (32) is provided on the suction hood (31). The suction pipe (32) is connected to a negative pressure dust collection device.

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