A pretreatment device for plastic product drying

Abstract

The utility model relates to the field of plastic processing automation equipment especially relates to a kind of pretreatment device for the drying of plastic product, including support frame, the support frame is equipped with cleaning tunnel and drying tunnel, control cabinet is installed in the drying tunnel front side, the cleaning tunnel is separated from the drying tunnel, the support frame is provided with the conveying belt that passes through the cleaning tunnel and the drying tunnel, the conveying belt is equipped with several drive discs, the drive disc top rotary joint has placing rack, the support frame is provided with air supply component for blowing moisture, the air supply component is located between the cleaning tunnel and the drying tunnel. Through the multi-angle air outlet of air blowing pipe in air supply component and the dynamic adjustment of mounting bracket driven by linear motor, the airflow uniformly covers the product surface and realizes accurate blowing, so as to realize the quick blowing of residual hanging water droplets after cleaning, to improve the drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automated equipment for plastic processing, and in particular to a pretreatment device for drying plastic products. Background Technology

[0002] Plastic products, as an indispensable basic material in modern industry and consumer sectors, are widely used in automotive parts, electronic appliance housings, medical device components, and packaging for everyday consumer goods. Their production process typically includes key steps such as injection molding, surface treatment, cleaning, and drying. The cleaning process uses physical or chemical methods to remove residual oil, mold release agents, and dust from the molding process, ensuring the product's cleanliness meets the standards for subsequent processing or use. The drying process thoroughly removes moisture from the product's surface and internal pores, preventing product deformation, electrical performance degradation, or appearance defects caused by water residue; it is a crucial step in ensuring the quality and performance of plastic products.

[0003] Most existing plastic drying equipment adopts a continuous operation mode. A typical design involves cleaned plastic products directly entering the drying device, such as a tunnel drying oven or an infrared radiation drying box, via a conveyor belt. This design achieves physical integration of the cleaning and drying processes, forming a continuous production line, effectively improving production efficiency, reducing labor costs, and is suitable for the automated production needs of large-volume standardized plastic products.

[0004] However, after cleaning, water droplets often remain on the surface of plastic products. These droplets, under the influence of gravity, form suspended water beads or films. In the initial drying stage, these droplets absorb a large amount of heat for latent heat of vaporization, resulting in a slow temperature rise in localized areas and prolonging the overall drying time. Simultaneously, during evaporation, surface tension can cause irregular water stains on the product surface, affecting appearance quality, directly reducing drying efficiency, increasing energy consumption, and potentially lowering product yield. This has become a key bottleneck restricting the automation and quality improvement of plastic production. Utility Model Content

[0005] To overcome the drawback of residual moisture, this invention provides a pretreatment device for drying plastic products, aiming to solve the aforementioned shortcomings.

[0006] A pretreatment device for drying plastic products includes a support frame, on which a cleaning tunnel and a drying tunnel are installed. A control cabinet is installed at the front of the drying tunnel. The cleaning tunnel and the drying tunnel are separate. The support frame is provided with a conveyor belt that runs through the cleaning tunnel and the drying tunnel. The conveyor belt is equipped with a plurality of drive discs. A placement frame is rotatably connected to the top of the drive discs. The support frame is provided with an air supply assembly for drying moisture. The air supply assembly is located between the cleaning tunnel and the drying tunnel.

[0007] Furthermore, the air supply assembly includes a telescopic pipe, the support frame is equipped with a linear motor, the linear motor is slidably connected to a mounting frame on the side facing the conveyor belt, the mounting frame is equipped with a blower pipe, one end of the telescopic pipe is connected to the blower pipe, and the other end passes through the external air pump chamber of the support frame.

[0008] Furthermore, a baffle is connected between the cleaning tunnel and the drying tunnel, and a water collection tank is slidably connected to the support frame. The water collection tank is located below the baffle and is connected to a handle.

[0009] Furthermore, a transparent plate is embedded in the middle of the baffle.

[0010] Furthermore, splash guards are connected to both ends of the baffle facing the conveyor belt.

[0011] Furthermore, a protective plate is connected to the side of the support frame where the linear motor is mounted, and the telescopic tube is slidably connected to the protective plate.

[0012] Furthermore, the support frame is rotatably connected to several rollers, which are rotatably connected to the water collection tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By dynamically adjusting the multi-angle air outlets of the air supply assembly and the mounting bracket driven by the linear motor, the airflow can evenly cover the product surface and achieve precise blowing, thereby quickly blowing off the residual hanging water droplets after cleaning and improving drying efficiency.

[0014] 2. Through the arc-shaped outward expansion design of the baffle and splash guard and the inclined flow guiding structure, the blown water droplets flow into the water collection tank along the surface of the baffle, while preventing water droplets from splashing to both sides. This achieves the purpose of avoiding water droplets entering the cleaning tunnel and drying tunnel and causing secondary pollution, and ensuring a clean operating environment for the equipment.

[0015] 3. By using the rollers at the bottom of the water collection tank in conjunction with the handle, the frictional resistance when the water collection tank is moved is reduced and the operation is convenient, thereby achieving the purpose of regularly cleaning up the accumulated water, keeping the equipment clean, and reducing the cost of manual maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram showing the connection relationship between the linear motor and the mounting bracket of this utility model.

[0018] Figure 3This is a schematic diagram showing the connection relationship between the telescopic tube and the blower tube of this utility model.

[0019] Figure 4 This is a schematic diagram showing the connection relationship between the baffle and the drying tunnel of this utility model.

[0020] Figure 5 This is a schematic diagram showing the connection relationship between the water collection tank and the handle of this utility model.

[0021] Reference numerals: 1_Support frame, 2_Conveyor belt, 3_Drive disc, 4_Placement rack, 5_Washing tunnel, 6_Drying tunnel, 7_Control cabinet, 8_Linear motor, 9_Mounting frame, 10_Blower duct, 11_Telescopic tube, 12_Baffle, 13_Water collection tank, 14_Handle, 15_Transparent plate, 16_Splash guard, 17_Protective plate, 18_Roller. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example: A pretreatment device for drying plastic products, such as... Figures 1-5 As shown, the system includes a support frame 1, a conveyor belt 2, a drive disc 3, a placement rack 4, a cleaning tunnel 5, a drying tunnel 6, a control cabinet 7, and an air supply assembly. The support frame 1 is equipped with the cleaning tunnel 5 and the drying tunnel 6. The control cabinet 7 is installed on the front side of the drying tunnel 6. The cleaning tunnel 5 and the drying tunnel 6 are separate. The support frame 1 is provided with a conveyor belt 2 that runs through the cleaning tunnel 5 and the drying tunnel 6. Several drive discs 3 are installed on the conveyor belt 2. The placement rack 4 is rotatably connected to the top of the drive discs 3. The support frame 1 is provided with an air supply assembly for drying water. The air supply assembly is located between the cleaning tunnel 5 and the drying tunnel 6.

[0024] like Figure 2 and Figure 3 As shown, the air supply assembly includes a linear motor 8, a mounting frame 9, a blower pipe 10, and a telescopic pipe 11. The support frame 1 is equipped with two linear motors 8. The mounting frame 9 is slidably connected to the side of the linear motor 8 facing the conveyor belt 2. The blower pipe 10 is installed on the mounting frame 9. The blower pipe 10 is equipped with multi-angle air outlets to achieve uniform airflow coverage. Moreover, the multi-angle air outlet design ensures that residual moisture on the surface of the product is completely blown off after cleaning. One end of the telescopic pipe 11 is connected to the blower pipe 10, and the other end passes through the external air pump chamber of the support frame 1.

[0025] like Figure 1 , Figure 4 and Figure 5As shown, it also includes a baffle 12, a water collection tank 13 and a handle 14. The baffle 12 is connected between the cleaning tunnel 5 and the drying tunnel 6. The support frame 1 is slidably connected to the water collection tank 13. The water collection tank 13 is located below the baffle 12. The baffle 12 adopts an inclined flow guiding design, which, together with the bottom roller 18 of the water collection tank 13, reduces moving friction. The water collection tank 13 is connected to the handle 14.

[0026] like Figure 4 As shown, it also includes a transparent plate 15. The transparent plate 15 is embedded in the middle of the baffle 12. The transparent plate 15 is made of a high light transmittance material, which makes it easy to observe the state of water droplets on the product surface in real time.

[0027] like Figure 4 As shown, it also includes a splash guard 16. The left and right ends of the baffle 12 facing the conveyor belt 2 are connected to the splash guard 16. The splash guard 16 has an arc-shaped outward expansion design, which effectively blocks water droplets from splashing to both sides.

[0028] like Figure 2 and Figure 3 As shown, it also includes a protective plate 17. The support frame 1 has a protective plate 17 connected to the side where the linear motor 8 is installed. The telescopic tube 11 is slidably connected to the protective plate 17. The width of the protective plate 17 is greater than the thickness of the linear motor 8, forming a physical isolation barrier.

[0029] like Figure 1 and Figure 2 As shown, it also includes rollers 18. The support frame 1 is rotatably connected with several rollers 18. The rollers 18 are rotatably connected to the water collection tank 13. The rollers 18 have smooth surfaces and are closely arranged to reduce the frictional resistance when the water collection tank 13 moves.

[0030] Staff activate the device and adjust the operating parameters of each electrical component via control cabinet 7. The spray system inside cleaning tunnel 5 thoroughly washes the passing plastic products, effectively removing surface oil, mold release agent residue, and other impurities. As conveyor belt 2 moves laterally, it synchronously drives drive disc 3 to move horizontally. The top of drive disc 3 is rotatably connected to placement rack 4, ensuring that placement rack 4 rotates continuously during movement. This ensures that the plastic products receive uniform cleaning while rotating, and simultaneously prepares the subsequent drying process for uniform heating and airflow.

[0031] After the drive disc 3 moves out of the cleaning tunnel 5, the linear motor 8 starts working, driving the mounting bracket 9 to slide and adjust its position along the vertical direction of the support frame 1, adjusting the air pipe 10 to the optimal blowing position. The telescopic pipe 11 continuously introduces clean air or preheated air from the external air pump chamber. The airflow sprayed from the air pipe 10 directly acts on the surface of the plastic product, blowing off the residual moisture after cleaning, avoiding the absorption of latent heat of vaporization by hanging water droplets, which would cause slow local heating and thus affect the overall drying efficiency. The two linear motors 8 work together to ensure complete coverage of the blowing area and sufficient blowing time. After drying, the conveyor belt 2 continues to advance the drive disc 3, smoothly sending the product into the drying tunnel 6 to complete the final drying, and finally, the staff collects and stores the product.

[0032] Water droplets blown off by the blower 10 are blocked by the baffle 12 and guided along its surface into the water collection tank 13. The splash guards 16 on both sides of the baffle 12 effectively prevent water droplets from splashing into the cleaning tunnel 5 and drying tunnel 6, avoiding secondary pollution. A transparent plate 15 is embedded in the middle of the baffle 12, allowing staff to observe the water droplet residue on the plastic product surface in real time and adjust the position or airflow intensity of the blower 10 accordingly. A roller 18 is installed at the bottom of the water collection tank 13; the roller 18 reduces frictional resistance during movement. The water collection tank 13 can be easily pulled out using the handle 14 to empty accumulated water, keeping the equipment clean. During the movement of the blower 10, the protective plate 17 always isolates the telescopic tube 11 from the linear motor 8, preventing tangling of the pipes or wear on mechanical parts, ensuring stable equipment operation.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A pretreatment device for drying plastic products, characterized in that, The system includes a support frame (1), on which a cleaning tunnel (5) and a drying tunnel (6) are installed. A control cabinet (7) is installed on the front side of the drying tunnel (6). The cleaning tunnel (5) and the drying tunnel (6) are separated. The support frame (1) is provided with a conveyor belt (2) that runs through the cleaning tunnel (5) and the drying tunnel (6). The conveyor belt (2) is provided with a plurality of drive discs (3). A placement rack (4) is rotatably connected to the top of the drive discs (3). The support frame (1) is provided with an air supply assembly for drying water. The air supply assembly is located between the cleaning tunnel (5) and the drying tunnel (6).

2. The pretreatment device for drying plastic products according to claim 1, characterized in that, The air supply assembly includes a telescopic pipe (11), a linear motor (8) is installed on the support frame (1), a mounting frame (9) is slidably connected to the linear motor (8) on one side facing the conveyor belt (2), a blower pipe (10) is installed on the mounting frame (9), one end of the telescopic pipe (11) is connected to the blower pipe (10), and the other end passes through the support frame (1) and is connected to the external air pump chamber.

3. The pretreatment device for drying plastic products according to claim 2, characterized in that, A baffle (12) is connected between the cleaning tunnel (5) and the drying tunnel (6). A water collection tank (13) is slidably connected to the support frame (1). The water collection tank (13) is located below the baffle (12). A handle (14) is connected to the water collection tank (13).

4. The pretreatment device for drying plastic products according to claim 3, characterized in that, A transparent plate (15) is embedded in the middle of the baffle (12).

5. The pretreatment device for drying plastic products according to claim 4, characterized in that, The baffle (12) has splash guards (16) connected to both ends of the side facing the conveyor belt (2).

6. The pretreatment device for drying plastic products according to claim 5, characterized in that, The support frame (1) has a protective plate (17) connected to the side where the linear motor (8) is installed, and the telescopic tube (11) is slidably connected to the protective plate (17).

7. The pretreatment device for drying plastic products according to claim 6, characterized in that, The support frame (1) is rotatably connected to several rollers (18), and the rollers (18) are rotatably connected to the water collection tank (13).

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