A metal mesh hot air drying oven

Abstract

This application discloses a hot air drying oven for metal mesh, belonging to the field of hot air drying technology. It mainly includes a box body; the box body includes a hot air box and a conveying assembly; the conveying assembly includes several conveying rollers for conveying the metal mesh. The key feature is that each of the several conveying rollers is equipped with a guide wheel assembly, which includes a first guide wheel and a second guide wheel; both the first and second guide wheels are provided with a bearing portion and a limiting portion, and the diameter of the bearing portion is larger than the diameter of the conveying roller, while the diameter of the bearing portion is smaller than the diameter of the limiting portion; the bearing portions on the first and second guide wheels are close to each other; by providing the guide wheel assembly, the metal frame in the metal mesh can be placed on the guide wheels, thereby increasing the distance between the metal mesh and the conveying rollers, thus reducing the obstruction and interference of the conveying rollers on the hot air flowing down the metal mesh, thereby improving the uniformity of drying on both sides of the metal mesh.

Description

Technical Field

[0001] This application relates to the field of hot air drying technology, specifically a metal mesh hot air drying oven. Background Technology

[0002] Metal screen printing is a printing screen made of metal material through a specific process. It is mainly composed of metal frames and metal mesh between them. It is one of the core components of screen printing. It combines the strength and durability of metal with the fine printing capabilities of screen printing and is widely used in printing scenarios with high precision and high durability requirements.

[0003] Metal screen printing typically requires hot air drying during production, especially in critical processes such as coating photosensitive emulsion and post-development cleaning, where hot air drying is a crucial step in ensuring screen quality.

[0004] Currently, existing hot air drying equipment typically places the metal mesh on a conveyor belt, which then carries it into the hot air drying chamber. While this method allows the upward-facing side of the mesh to make good contact with the hot air in the drying chamber, the thickness of the metal frame limits the distance between the downward-facing side (the side facing the conveyor belt) and the belt, thus affecting the contact between this side and the hot air. Therefore, it is necessary to provide a hot air drying oven for metal mesh to address this issue.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a hot air drying oven for metal mesh that can increase the distance between the metal mesh and the conveyor belt, thereby making the overall drying more uniform.

[0007] The technical solution adopted by this application to solve its technical problem is: a metal mesh hot air drying oven, including a box body;

[0008] The enclosure includes a hot air box and a conveying assembly;

[0009] The conveying assembly includes a plurality of conveying rollers for conveying metal mesh, characterized in that: each of the plurality of conveying rollers is provided with a guide wheel assembly, the guide wheel assembly including a first guide wheel and a second guide wheel;

[0010] Both the first guide wheel and the second guide wheel are provided with a bearing part and a limiting part, and the diameter of the bearing part is larger than the diameter of the conveying roller, while the diameter of the bearing part is smaller than the diameter of the limiting part;

[0011] The bearing portions on the first guide wheel and the second guide wheel are close to each other.

[0012] Furthermore, the housing is also provided with an adjustment assembly, which includes an adjustment plate. The adjustment plate is disposed on one side of the limiting part of the second guide wheel and is connected to the second guide wheel.

[0013] Furthermore, the second guide wheel is provided with a rotating groove, and the rotating groove has an opening on the side away from the bearing part. The adjusting plate is provided with an adjusting screw, and the adjusting screw is provided with a protrusion.

[0014] Furthermore, the cross-sectional width of the protrusion is smaller than the cross-sectional width of the rotating groove, and the cross-sectional width of the opening is smaller than the cross-sectional width of the protrusion.

[0015] Furthermore, the second guide wheel has a mounting hole that communicates with the rotating groove.

[0016] Furthermore, the number of adjusting screws is at least two.

[0017] The beneficial effects of this application are: the hot air drying box for metal mesh provided by this application, by setting a guide roller group, allows the metal frame in the metal mesh to be placed on the guide roller, thereby increasing the distance between the metal mesh and the conveying roller, thereby reducing the obstruction and interference of the conveying roller on the hot air of the downward-facing metal mesh, thereby improving the uniformity of drying on both sides of the metal mesh.

[0018] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is an overall schematic diagram of a metal mesh hot air drying oven according to this application;

[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle box;

[0022] Figure 3This is a schematic diagram of the conveying and regulating components.

[0023] Figure 4 This is a schematic diagram of the local structural combination state of region A;

[0024] Figure 5 This is a schematic diagram of a partial structural explosion in area A.

[0025] The following are the labeling elements in the figure:

[0026] 1. Chamber; 11. Preheating chamber; 12. Hot air chamber; 121. Heating element; 122. Distributor fan; 13. Cooling chamber; 14. Fan;

[0027] 2. Conveying assembly; 21. Conveying roller; 22. Conveying motor; 23. First guide roller; 24. Second guide roller; 241. Mounting hole; 242. Rotating groove; 243. Adjusting screw; 244. Bearing part; 245. Limiting part;

[0028] 3. Adjustment assembly; 31. Adjustment cylinder; 32. Adjustment plate; 321. Upper plate; 322. Lower plate; 323. Slot; 324. Locking bolt; 33. Guide post. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0031] like Figures 1-5 As shown, this application provides a hot air drying oven for metal mesh, including a box body 1, with a conveying assembly 2 arranged below the box body 1. The box body 1 is divided into a preheating box 11, a hot air box 12, and a cooling box 13. The conveying direction of the conveying assembly 2 is from one side of the preheating box 11 to one side of the cooling box 13.

[0032] like Figure 2 As shown, the hot air box 12 is provided with multiple sets of heating pipes 121 inside. The heating pipes 121 are distributed on the upper and lower sides of the conveying assembly 2. Fans 14 are provided on the top and bottom of the hot air box 12 and the top of the cooling box 13. A split fan 122 is provided on the side wall of the hot air box 12 near the preheating box 11.

[0033] When the hot air drying oven is working, the heating tube 121 inside the hot air box 12 generates heat, and each fan 14 blows this heat to the conveying assembly 2. Then, the metal mesh plate to be dried is placed on the conveying assembly 2, and the conveying assembly 2 carries the metal mesh plate into the preheating box 11. At the same time, due to the presence of the split fan 122, it will introduce some of the hot air in the hot air box 12 into the preheating box 11, so that the preheating box 11 can preheat the metal mesh plate that has just entered the box 1 to a certain extent, avoiding direct contact between the metal mesh plate and the high-temperature hot air box 12.

[0034] As the conveying component 2 continues to convey the metal mesh, it will pass through the preheating box 11 and the hot air box 12 in sequence. After it enters the cooling box 13, the fan 14 on the cooling box 13 will cool the metal mesh with air, so that it can cool down to room temperature more quickly.

[0035] like Figures 3-5 The conveying assembly 2 includes a conveying roller 21 and a conveying motor 22. The conveying roller 21 is provided with multiple rollers and is driven to rotate by the conveying motor 22. After the metal mesh is placed on the conveying roller 21, the conveying roller can drive the metal mesh to move forward.

[0036] Each conveyor roller 21 is equipped with a pair of guide wheels. The set of guide wheels is divided into a first guide wheel 23 and a second guide wheel 24. These guide wheels are all fitted onto the conveyor roller 21, and the first guide wheel 23 can be temporarily fixed to the conveyor roller 21 by bolts, fittings, etc.

[0037] Each guide roller consists of a support part 244 and a limiting part 245. The support parts 244 of each pair of guide rollers are close to each other, and the diameter of the support part 244 is larger than the diameter of the conveying roller 21, but smaller than the diameter of the limiting part 245. When placing the metal mesh, the distance between the two guide rollers needs to be adjusted in advance according to the width of the metal frame of the metal mesh, so that the distance between the limiting parts 245 of each set of guide rollers is approximately the same as the width of the metal frame of the metal mesh. This way, the metal frame of the metal mesh can be placed on the support parts 244 of each guide roller.

[0038] Since the diameter of the support portion 244 is larger than the diameter of the conveyor roller 21, placing the metal mesh on the support portion 244 can increase the distance between the metal mesh and the conveyor roller 21 compared to placing the metal frame of the metal mesh directly on the conveyor roller 21. Also, since there are only two guide rollers per pair, only the metal frame of the metal mesh will be placed on the support portion 244, and the metal mesh inside the metal frame will not come into contact with the guide rollers or the conveyor roller 21.

[0039] On the side of the housing 1 near the second guide wheel 24, there is an adjustment component 3. The adjustment component 3 is used to adjust the position of the second guide wheel 24, thereby adjusting the distance between the first guide wheel 23 and the second guide wheel 24 to accommodate metal mesh of different widths.

[0040] like Figures 4-5 As shown, the adjustment assembly 3 mainly includes an adjustment cylinder 31, which is installed on the housing 1. Its output shaft passes through the side wall of the housing 1 and is connected to an adjustment plate 32. The adjustment plate 32 is provided with multiple guide posts 33. The adjustment plate 32 is divided into an upper plate 321 and a lower plate 322. The upper plate 321 and the lower plate 322 are provided with slots 323 near the conveying roller 21. The slots 323 are respectively provided on the upper plate 321 and the lower plate 322 and are combined to form a cavity that can accommodate the conveying roller 21. The upper plate 321 and the lower plate 322 are locked and fixed by locking bolts 324.

[0041] On the side of the limiting part 245 of the second guide wheel 24 away from the bearing part 244, an annular rotating groove 242 is provided. The rotating groove 242 has an opening on the outward side, and the size of the opening is smaller than the size of the rotating groove 242. On the position of the limiting part 245 of the second guide wheel 24 facing the bearing part 244 and corresponding to the rotating groove 242, a mounting hole 241 is provided.

[0042] At least two adjusting screws 243 are bolted to the adjusting plate 32. The ends of the adjusting screws 243 are provided with protrusions, the shape of which is consistent with the cross-sectional shape of the rotating groove 242.

[0043] like Figure 3 , Figure 5 As shown, before the hot air drying oven starts working, the operator needs to install the adjustment component 3 onto the box body 1. During this process, the upper plate 321 and the lower plate 322 of the adjustment plate 32 should be installed first. At this time, the slot 323 on the adjustment plate 32 will be locked onto the conveyor roller 21, but it will not affect the normal rotation of the conveyor roller 21. Then, the upper plate 321 and the lower plate 322 are locked and fixed by the locking bolt 324.

[0044] The staff then rotated the mounting hole 241 on the second guide wheel 24 to the corresponding position on the adjusting plate 32, and inserted one threaded end of the adjusting screw 243 into the mounting hole 241. After the adjusting screw 243 extends out of the limiting part 245, a nut was first screwed on it. After it passed through the adjusting plate 32, another nut was screwed on it. The two nuts can fix the adjusting screw 243 on the adjusting plate 32, and it is necessary to ensure that the protrusion of the adjusting screw 243 is located inside the rotating groove 242. At this time, the second guide wheel 24 can rotate normally.

[0045] When the position of the second guide wheel 24 needs to be adjusted, the adjusting plate 32 can be moved by the adjusting cylinder 31. When the adjusting plate 32 moves toward the second guide wheel 24, each adjusting screw 243 will push the inner wall of the rotating groove 242 and push the second guide wheel 24 toward the first guide wheel 23, thereby reducing the gap between the two guide wheels to accommodate the narrower metal mesh. Conversely, the adjusting screw 243 will pull the side wall of the rotating groove 242, thereby increasing the gap between the two guide wheels. Since the size of the opening is smaller than the size of the rotating groove 242, there is no need to worry about the protrusion detaching from the rotating groove 242, so as to accommodate the wider metal mesh.

[0046] During the adjustment of the second guide wheel 24 by adjusting screw 243, there is a very small possibility that adjusting screw 243 may be perfectly aligned with the mounting hole 241. If the driving adjustment plate 32 moves towards the second guide wheel 24 at this time, the adjusting screw 243 will pass through the mounting hole 241, resulting in adjustment failure. Therefore, after the first adjusting screw 243 is installed, the second guide wheel 24 can be rotated to rotate the mounting hole 241 to the position of the second adjusting screw 243 (e.g., after the first adjusting screw 243 is installed). Figure 5 As shown), the second adjusting screw 243 is installed in the same way. After installation, there is no need to consider the situation where the adjusting screw 243 is disengaged from the rotating groove 242.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A metal mesh hot air drying oven, comprising a box body (1); The housing (1) includes a hot air box (12) and a conveying assembly (2); The conveying assembly (2) includes a plurality of conveying rollers (21) for conveying the metal mesh, characterized in that: Each of the aforementioned conveying rollers (21) is provided with a guide roller assembly, which includes a first guide roller (23) and a second guide roller (24). Both the first guide wheel (23) and the second guide wheel (24) are provided with a bearing part (244) and a limiting part (245), and the diameter of the bearing part (244) is larger than the diameter of the conveying roller (21), while the diameter of the bearing part (244) is smaller than the diameter of the limiting part (245). The first guide wheel (23) and the support portion (244) on the second guide wheel (24) are close to each other.

2. The hot air drying oven for metal mesh printing according to claim 1, characterized in that: The housing (1) is also provided with an adjustment component (3), which includes an adjustment plate (32). The adjustment plate (32) is located on one side of the limiting part (245) of the second guide wheel (24), and the adjustment plate (32) is connected to the second guide wheel (24).

3. A hot air drying oven for metal mesh printing according to claim 2, characterized in that: The second guide wheel (24) has a rotating groove (242) and an opening on the side of the rotating groove (242) away from the bearing part (244). The adjusting plate (32) has an adjusting screw (243) and a protrusion.

4. A hot air drying oven for metal mesh printing according to claim 3, characterized in that: The cross-sectional width of the protrusion is smaller than the cross-sectional width of the rotating groove (242), and the cross-sectional width of the opening is smaller than the cross-sectional width of the protrusion.

5. A hot air drying oven for metal mesh printing according to claim 3, characterized in that: The second guide wheel (24) has a mounting hole (241) which is connected to the rotating groove (242).

6. A hot air drying oven for metal mesh printing according to claim 5, characterized in that: The number of the adjusting screws (243) is at least two.

Images