Multilayer shuttle type high-efficiency hot air drying line for die castings

Abstract

The application relates to a multi-layer shuttle type high-efficiency hot air drying line for pressure castings, and relates to the technical field of pressure casting drying, which comprises a drying heating line, wherein the drying heating line comprises a drying machine and a drying heating box, the side of the drying machine is connected with the drying heating box, a shuttle type moving belt is arranged in the drying heating box, and a heat source centralized discharge assembly is slidably connected above the shuttle type moving belt. The shuttle type moving belt can drive the pressure castings to move in multiple paths, prolongs the residence time of the pressure castings in the drying heating box, and ensures that the pressure castings can be fully contacted with hot air; the fan body of the heat source centralized discharge assembly can converge air flow, adjusts the air supply angle in cooperation with a movable shaft, and makes hot air act on the surface of the pressure castings to accelerate water evaporation.

Description

Technical Field

[0001] This application relates to the field of die casting drying technology, and in particular to a multi-layer shuttle-type high-efficiency hot air drying line for die castings. Background Technology

[0002] Hot air drying of die castings is a process that uses heated air to remove residual moisture (such as after cleaning) from the surface of die castings. It is a common step in the post-processing of die castings.

[0003] An existing patent (publication number: CN118623593B) discloses a hot air drying conveyor line, including a conveying component and a drying component. The conveying component includes a power conveyor belt; the drying component includes a drying box, a blower box, a return air box, and a hot air circulation pipeline. The drying box has a laterally extending conveying channel, the power conveyor belt is arranged along the conveying channel, the blower box is located inside the conveying channel and at the bottom side of the power conveyor belt, the blower box has multiple blowouts spaced along the conveying channel, and the top side of the drying box has multiple return air inlets spaced along the conveying channel, the multiple return air inlets are connected to the return air box, and the hot air circulation pipeline is connected between the blower box and the return air box. This can improve drying efficiency and improve the quality of workpiece drying. This invention relates to the technical field of workpiece conveying and drying. In the process of realizing this application, the inventors discovered the following problems with the existing technology: Existing die-casting drying technologies primarily rely on traditional single-layer conveyor drying lines or static drying chambers. While single-layer conveyor drying lines enable continuous operation, their limited single-layer layout results in a short effective drying path, leading to low drying efficiency. Static drying chambers, although allowing for stacking trays to improve space utilization, cannot achieve continuous operation, and uneven hot air distribution can easily lead to inconsistent workpiece drying quality. With the expansion of die-casting production scale, traditional drying technologies can no longer meet the demands for high efficiency and high quality. Therefore, a multi-layer shuttle-type high-efficiency hot air drying line for die castings is proposed to address the aforementioned technical problems. Utility Model Content

[0004] To address the aforementioned issues, this application provides a multi-layer shuttle-type high-efficiency hot air drying line for die castings.

[0005] This application provides a multi-layer shuttle-type high-efficiency hot air drying line for die-casting parts, employing the following technical solution: A multi-layer shuttle-type high-efficiency hot air drying line for die castings includes a drying heating line, which includes a dryer and a drying heating box. The drying heating box is connected to the side of the dryer. A shuttle moving belt is installed inside the drying heating box, and a centralized heat source discharge component is slidably connected above the shuttle moving belt.

[0006] By adopting the above technical solution, the drying heating line is the main structure of the drying device, which is mainly composed of a dryer that provides a heat source and a drying heating box that realizes the drying treatment of die-cast parts.

[0007] Preferably, the centralized heat source emission assembly includes a first fixed plate, a fan body, a movable shaft, and a second fixed plate. The first fixed plate has a groove inside, and the fan body is connected to the groove of the first fixed plate. The top of the first fixed plate is connected to the movable shaft, and the second fixed plate is rotatably connected to the side of the movable shaft.

[0008] By adopting the above technical solution, the centralized heat source emission component can concentrate the hot air in the drying heating box and guide it to the die-cast parts on the shuttle moving belt, so that the moisture on the surface of the die-cast parts can be evaporated more efficiently. The structure of the fan body in the groove can stably accommodate the fan body and also can converge the airflow blown by the fan body, so that the airflow acts more concentratedly on the die-cast parts. Preferably, the shuttle-type moving belt includes track plates, a support frame, a protective cover, a positioning plate, and a drive motor. The track plates are connected to the support frame on all four sides, the support frame is provided with a protective cover on the side, the protective cover is connected with a positioning plate on the side, and the positioning plate is provided with a drive motor on the side.

[0009] By adopting the above technical solution, the shuttle conveyor belt can drive the die-cast parts to move along multiple paths inside the drying heating chamber, extending the residence time of the die-cast parts in the heating chamber and ensuring that the die-cast parts can fully contact the hot air to complete the drying process. Preferably, a drop guide frame is provided below the shuttle-type moving belt, and a drop groove is provided at the feeding end of the drying heating box located on the drop guide frame.

[0010] Preferably, the drop guide frame includes a rotating shaft and a drop plate, the two ends of the rotating shaft are fixed to the inner walls of the drying and heating chamber, and the drop plate is installed on the outer surface of the rotating shaft.

[0011] By adopting the above technical solution, the inclined drop plate can guide the die casting to slide along the plate surface towards the drop groove, ensuring that the die casting accurately falls into the drop groove and avoiding the die casting from scattering or collision damage during the drop process.

[0012] Preferably, a feeding conveyor belt is provided on the side of the drying and heating box, and a partition plate is placed above the feeding conveyor belt.

[0013] Preferably, a heat source conveying fan is connected above the partition plate, a guide arc plate is provided on the side of the heat source conveying fan, and an exhaust fan is provided at the top of the drying heating box.

[0014] By adopting the above technical solution, the heat source conveying fan can accelerate the airflow of the hot air delivered by the dryer through the heat source conveying pipe, improve the efficiency of the hot air entering the drying heating box, and guide the accelerated hot air to enter the drying heating box evenly and orderly, avoiding the disorderly diffusion of hot air and the resulting uneven temperature distribution in the heating box.

[0015] Compared with existing technologies, this multi-layer shuttle-type high-efficiency hot air drying line for die-cast parts utilizes a heating system constructed through the coordinated operation of a dryer and a drying heating chamber. A shuttle-type moving belt drives the die-cast parts along multiple paths, extending their residence time within the drying heating chamber and ensuring sufficient contact with hot air. The fan body of the centralized heat source exhaust component gathers airflow, and the adjustable air delivery angle, combined with a movable shaft, allows hot air to act on the surface of the die-cast parts, accelerating moisture evaporation. A heat source conveying fan accelerates hot air delivery, while a guide arc plate evenly directs the hot airflow to various areas within the chamber, preventing uneven temperature distribution. An exhaust fan promptly removes water vapor, preventing its accumulation and impacting the drying effect, thus reducing drying time and avoiding heat waste and incomplete drying. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the main body of this application; Figure 2 This is a schematic diagram of the internal structure of the drying and heating box of this application; Figure 3 This is a schematic diagram of the internal structure of the drying and heating box of this application; Figure 4 This is a first-view structural schematic diagram of the shuttle-type moving belt of this application; Figure 5 This is a schematic diagram of the structure of the centralized heat source emission assembly of this application; Figure 6 This is a schematic diagram of the drive structure of the shuttle-type moving belt in this application; Figure 7 This is a second-view structural schematic diagram of the shuttle-type moving belt of this application.

[0017] The attached figures are labeled as follows: 1. Drying heating line; 2. Dryer; 3. Heat source conveying pipe; 4. Drying heating box; 5. Exhaust fan; 6. Feeding conveyor belt; 7. Separator plate; 8. Heat source conveying fan; 9. Guide arc plate; 10. Shuttle moving belt; 11. Drop guide frame; 1101. Rotating shaft; 1102. Drop plate; 12. Drop trough; 13. Centralized heat source discharge assembly; 14. Track plate; 15. Support frame; 16. Protective cover; 17. Positioning plate; 18. Drive motor; 19. First fixed plate; 20. Fan body; 21. Movable shaft; 22. Second fixed plate; 23. First synchronous pulley; 24. Synchronous belt; 25. Second synchronous pulley; 26. Drive shaft; 27. Driven shaft. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The following is in conjunction with the appendix Figure 1 - Figure 7 This application will be described in further detail below.

[0020] A multi-layer shuttle-type high-efficiency hot air drying line for die-cast parts includes a drying heating line 1, which includes a dryer 2 and a drying heating box 4. The drying heating box 4 is connected to the side of the dryer 2. A shuttle moving belt 10 is installed inside the drying heating box 4. A heat source centralized discharge component 13 is slidably connected above the shuttle moving belt 10. The drying heating line 1 is the main structure of the drying device, mainly composed of the dryer 2 that provides the heat source and the drying heating box 4 that realizes the drying treatment of die-cast parts. The two are connected by a heat source conveying pipe 3 installed at the heat source conveying end of the dryer 2. The heat source conveying pipe 3 can guide the hot air generated by the dryer 2 into the interior of the drying heating box 4, providing continuous and stable heating conditions for the drying heating box 4, and ensuring that the heat source supply of the entire drying process is not affected by the disconnection.

[0021] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5The centralized heat source emission assembly 13 can concentrate the hot air in the drying heating box 4 and guide it to the die-casting parts on the shuttle moving belt 10, so that the moisture on the surface of the die-casting parts can be evaporated by heat. The centralized heat source emission assembly 13 includes a first fixed plate 19, a fan body 20, a movable shaft 21, and a second fixed plate 22. The first fixed plate 19 has a groove inside, and the fan body 20 is connected in the groove. The structure of the fan body 20 in the groove can stably accommodate the fan body 20 and can also concentrate the airflow blown by the fan body 20, so that the airflow acts more concentratedly on the die-casting parts. The top of the first fixed plate 19 is fixedly connected to the movable shaft 21, and the side of the movable shaft 21 is rotatably connected to the second fixed plate 22. By rotating the movable shaft 21, the angle between the first fixed plate 19 and the second fixed plate 22 can be adjusted. A rubber gasket is provided at the connection between the movable shaft 21 and the second fixed plate 22. When the angle is adjusted, preload is applied by tightening the nut at the shaft end, which generates friction between the second fixed plate 22 and the movable shaft 21, and fixes the second fixed plate 22, thereby changing the airflow direction of the fan body 20. This allows the fan airflow to be adjusted according to the position of the die-cast parts on the shuttle moving belt 10, ensuring that each die-cast part is fully heated. The first fixed plate 19 is used to slide the entire heat source centralized emission assembly 13 onto the support frame 15 on the shuttle moving belt 10. The first fixed plate 19 is inserted into the side groove of the support frame 15 of the shuttle moving belt 10 through a slider connected to the bottom. The groove and the slider have T-shaped cross sections, allowing the first fixed plate 19 to move horizontally along the support frame 15. After the position adjustment of the heat source centralized emission assembly 13 is completed, it is re-fixed to the support frame 15 with bolts, ensuring that the heat source centralized emission assembly 13 will not loosen or shift during the movement of the shuttle moving belt 10, and always maintains a stable airflow state.

[0022] Reference Figure 1 , Figure 4 , Figure 6 and Figure 7The shuttle-type moving belt 10 can drive the die-cast parts to move along a path inside the drying and heating chamber 4, extending the residence time of the die-cast parts in the heating chamber and ensuring that the die-cast parts can fully contact the hot air to complete the drying process. The shuttle-type moving belt 10 includes track plates 14, support frames 15, protective covers 16, positioning plates 17, and drive motors 18. The track plates 14 include a belt, a drive shaft 26, and a driven shaft 27. The belt is made of EPDM rubber, which has heat resistance and can be used in high-temperature environments for a long time. The drive shaft 26 and the driven shaft 27 pass through and are connected to the support frame 15 through bearings. The support frame 15 is fixed to the inner wall of the drying and heating chamber 4 by bolts, providing a stable support structure for the track plates 14 and preventing the track plates 14 from deforming or shifting during the movement of the die-cast parts. The sides of the support frame 15... A protective cover 16 is bolted on, and a positioning plate 17 is bolted on the side of the protective cover 16. Its main function is to fix the drive motor 18 and ensure that the drive motor 18 can be installed on the shuttle moving belt 10. The drive end of the drive motor 18 is fixedly connected to the first synchronous pulley 23. The outer surface of the first synchronous pulley 23 is meshed with the synchronous belt 24. The inner side of the synchronous belt 24 away from the first synchronous pulley 23 is meshed with the second synchronous pulley 25. The first synchronous pulley 23, the second synchronous pulley 25 and the synchronous belt 24 are placed in the inner cavity of the protective cover 16 to reduce the contact between the synchronous pulley structure and the external environment. The second synchronous pulley 25 is fixedly connected to the drive shaft 26. When the drive shaft 26 is driven and rotated by the transmission structure connected to the drive motor 18, the drive shaft 26 drives the driven shaft 27 to rotate through the belt, forming a belt drive structure.

[0023] Reference Figure 1 and Figure 3 A drop guide frame 11 is provided below the shuttle moving belt 10, and a drop trough 12 is provided at the feeding end of the drying heating box 4 located on the drop guide frame 11.

[0024] Reference Figure 1 , Figure 2 and Figure 3The drop guide frame 11 includes a rotating shaft 1101 and a drop plate 1102. The two ends of the rotating shaft 1101 are fixed to the inner walls of the drying heating box 4, providing installation support for the drop plate 1102. The outer surface of the rotating shaft 1101 is rotatably connected to the drop plate 1102. By adjusting the rotation angle of the rotating shaft 1101, and after completing the angle conversion, the bolt is rotated to fix the drop plate 1102. After adjusting the tilt angle of the drop plate 1102, it is restricted. When the dried die-casting part falls from the end of the shuttle moving belt 10 onto the drop plate 1102, the tilted drop plate 1102 can guide the die-casting part to slide along the plate surface towards the drop groove 12, ensuring that the die-casting part falls accurately into the drop groove 12 and avoiding the die-casting part from scattering or being damaged by collision during the falling process.

[0025] Reference Figure 1 A feeding conveyor belt 6 is provided on the side of the drying and heating box 4. A partition plate 7 is placed on top of the feeding conveyor belt 6. The two sides of the feeding conveyor belt 6 are fixed to the edge of the drying and heating box 4 by bolts. The partition plate 7 is fixed to the inner wall of the drying and heating box 4 by bolts.

[0026] Reference Figure 1 and Figure 2 A heat source conveying fan 8 is connected above the partition plate 7. The heat source conveying fan 8 can accelerate the airflow of the hot air delivered by the dryer 2 through the heat source conveying pipe 3, thereby improving the efficiency of the hot air entering the drying and heating box 4. To ensure that the accelerated hot air enters the drying and heating chamber 4 evenly and orderly, and to prevent uneven temperature distribution caused by disordered diffusion of hot air, a guide arc plate 9 is placed on the side of the heat source conveying fan 8. The guide arc plate 9 is fixed to the inner wall of the drying and heating chamber 4 on both sides by bolts. The guide arc plate 9 can guide the hot airflow from the heat source conveying fan 8 in a suitable direction according to the internal spatial structure of the drying and heating chamber 4, so that the hot air can more comprehensively cover all areas inside the drying and heating chamber 4. An exhaust fan 5 is installed at the top of the drying and heating chamber 4, located to the side of the guide arc plate 9. The exhaust fan 5 is monitored by a humidity sensor, which is fixed to the inner wall of the drying and heating chamber 4 and controlled by a controller. The exhaust fan 5 starts when the humidity reaches the threshold and performs dehumidification. When the humidity is below the threshold, the exhaust fan 5 is stopped to maintain the temperature inside the drying chamber. The exhaust fan 5 can timely discharge the water vapor generated during the drying process of the die-casting parts to the outside of the drying and heating chamber 4, preventing water vapor from accumulating inside the heating chamber and affecting the drying effect. At the same time, it maintains the air pressure balance inside the heating chamber and ensures that all components operate in a stable environment.

[0027] Reference Figure 1 and Figure 2 The dryer 2 is equipped with a heat source conveying pipe 3 at the heat source conveying end, and the dryer 2 and the drying heating box 4 are connected by the heat source conveying pipe 3.

[0028] The working process of this application is as follows: First, during use, the die-casting parts are conveyed into the drying and heating chamber 4 of the drying and heating line 1 by the feeding conveyor belt 6. The dryer 2 heats the air and conveys the heat source into the drying and heating chamber 4 through the heat source conveying pipe 3. After the die-casting parts enter the drying and heating chamber 4, they move above the shuttle moving belt 10. At this time, within the limited space, the die-casting parts move continuously inside the drying and heating chamber 4 by multiple sets of shuttle moving belts 10. During the movement, they are in continuous contact with hot air, allowing the moisture retained on the die-casting parts due to cleaning to evaporate. While the die-casting parts are moving by the shuttle moving belts 10, a centralized heat source discharge component 13 can be installed on the shuttle moving belts 10. The fan body 20, which is fixed by the first fixed plate 19 and the second fixed plate 22 in the shuttle moving belts 10, can discharge the heat source. Air inside the heating chamber 4 is concentrated around the shuttle conveyor belt 10 and continuously heats the die-cast parts, allowing the moisture on the surface of the die-cast parts to be heated more concentratedly by the heat source. The dried die-cast parts are transported to the end of the bottom shuttle conveyor belt 10 and caught by the drop guide frame 11. Then, the rotating shaft 1101 of the drop guide frame 11 is adjusted so that the drop plate 1102 connected to the rotating shaft 1101 is tilted. When the die-cast parts fall onto the drop plate 1102, they move along the drop plate 1102 to the drop groove 12 to wait for recovery. When the heat source is transported into the drying heating chamber 4 through the heat source conveyor pipe 3, the heat source is accelerated by the heat source conveyor fan 8 and impacts the top of the guide arc plate 9. The shuttle conveyor belt 10 divides the space inside the drying heating chamber 4, so that the heat source can only circulate along the space divided by the shuttle conveyor belt 10.

[0029] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-layer shuttle-type high-efficiency hot air drying line for die castings, comprising a drying heating line (1), characterized in that: The drying heating line (1) includes a dryer (2) and a drying heating box (4). The drying heating box (4) is connected to the side of the dryer (2). A shuttle moving belt (10) is installed inside the drying heating box (4). A heat source centralized discharge component (13) is slidably connected above the shuttle moving belt (10).

2. The multi-layer shuttle-type high-efficiency hot air drying line for die castings according to claim 1, characterized in that: The heat source centralized emission assembly (13) includes a first fixed plate (19), a fan body (20), a movable shaft (21), and a second fixed plate (22). The first fixed plate (19) has a groove inside, and the fan body (20) is connected to the groove of the first fixed plate (19). The top of the first fixed plate (19) is connected to the movable shaft (21), and the side of the movable shaft (21) is rotatably connected to the second fixed plate (22).

3. The multi-layer shuttle-type high-efficiency hot air drying line for die castings according to claim 1, characterized in that: The shuttle-type moving belt (10) includes a track plate (14), a support frame (15), a protective cover (16), a positioning plate (17), and a drive motor (18). The track plate (14) is connected to the support frame (15) on all four sides. The support frame (15) is provided with a protective cover (16) on the side of the support frame (15). The positioning plate (17) is connected to the side of the protective cover (16). The drive motor (18) is provided on the side of the positioning plate (17).

4. The multi-layer shuttle-type high-efficiency hot air drying line for die castings according to claim 1, characterized in that: A drop guide frame (11) is provided below the shuttle moving belt (10), and a drop groove (12) is provided at the feeding end of the drying heating box (4) located on the drop guide frame (11).

5. The multi-layer shuttle-type high-efficiency hot air drying line for die castings according to claim 4, characterized in that: The drop guide frame (11) includes a rotating shaft (1101) and a drop plate (1102). The two ends of the rotating shaft (1101) are fixed to the inner walls of the drying heating box (4), and the drop plate (1102) is installed on the outer surface of the rotating shaft (1101).

6. The multi-layer shuttle-type high-efficiency hot air drying line for die castings according to claim 1, characterized in that: The drying and heating box (4) is provided with a feeding conveyor belt (6) on its side, and a partition plate (7) is placed above the feeding conveyor belt (6).

7. The multi-layer shuttle-type high-efficiency hot air drying line for die castings according to claim 6, characterized in that: A heat source conveying fan (8) is connected above the partition plate (7), a guide arc plate (9) is provided on the side of the heat source conveying fan (8), and an exhaust fan (5) is provided at the top of the drying heating box (4).

8. The multi-layer shuttle-type high-efficiency hot air drying line for die castings according to claim 1, characterized in that: The dryer (2) is equipped with a heat source conveying pipe (3) at the heat source conveying end, and the dryer (2) and the drying heating box (4) are connected by the heat source conveying pipe (3).

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