Processing equipment capable of removing moisture in injection molding material
By designing a connected structure between the melting chamber and the drying chamber in the injection molding equipment, the high-temperature gas in the melting chamber is used to dry the plastic granules, solving the problem of moisture absorption by the plastic granules during storage and transportation, achieving a highly efficient drying process, and saving energy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-03-13
AI Technical Summary
In the prior art, plastic granules absorb moisture during storage and transportation, which leads to bubbles, voids or surface defects during injection molding. The technical problem that needs to be solved in the prior art is how to efficiently remove moisture from plastic granules and save energy.
A processing device comprising a melting chamber and a drying chamber is designed. High-temperature gas in the melting chamber is used to dry plastic particles in the drying chamber through a connecting pipe. The high-temperature gas is used to dry the plastic particles in the drying chamber to achieve the desired plastic application. The design and implementation of the technical means are described to achieve the desired effect or result.
This technology enables the direct feeding of plastic granules from the drying chamber into the melting chamber without requiring additional heat energy during the drying process, thus improving feeding efficiency and saving energy.
Smart Images

Figure CN223989661U_ABST
Abstract
Description
Technical Field
[0001] This utility model provides a processing device that can remove moisture from injection-molded plastics, belonging to the technical field of plastic product processing equipment. Background Technology
[0002] In injection molding, plastic granules serve as the raw material, and their quality directly affects the performance and appearance of the final injection-molded product. However, plastic granules inevitably absorb moisture from the environment during storage, transportation, and production, which can cause a series of problems during the injection molding process. When the plastic granules melt and are then injection molded, water vapor may form bubbles, voids, or surface defects inside the product, severely affecting its appearance and quality.
[0003] Existing technologies often use external drying equipment to remove most of the moisture from plastic granules before transferring them to a melting tank. This process is inefficient and requires additional heat energy during drying, resulting in energy waste. To address these issues, a processing device is needed that can remove moisture from injection molding granules directly, saving energy and enabling faster feeding. Utility Model Content
[0004] The technical problem this invention aims to solve is that the efficiency of transferring dried plastic granules into the melting box is low, and additional heat energy is wasted during drying, which is not conducive to resource conservation.
[0005] To solve the above problems, the proposed technical solution is as follows: a processing device for removing moisture from injection-molded plastic, comprising a processing body, a melting tank fixedly mounted above the processing body, and a heating block mounted on the inner wall of the melting tank; a drying tank fixedly connected above the melting tank and communicating with the melting tank; a connecting pipe connected to the side wall of the melting tank and communicating with the drying tank; a fixed plate fixedly mounted inside the drying tank, with a drain hole on the fixed plate; a slot located below the fixed plate inside the drying tank, with a sliding plate slidably mounted in the slot and a connecting hole on the sliding plate; a stirring structure inside the drying tank; a fixed box fixedly connected to one side of the drying tank, with a moving mechanism inside the fixed box capable of controlling the sliding of the sliding plate; a humidity sensor mounted on the inner wall of the drying tank, and a controller electrically connected to the humidity sensor mounted on the side wall of the drying tank, with the controller electrically connected to the moving mechanism.
[0006] As an improvement, the stirring structure includes a rotating motor, a rotating shaft, stirring blades, and a scraper; the rotating motor is mounted on the drying chamber, and the rotating shaft is fixedly connected to the output shaft of the rotating motor; the rotating shaft is located inside the drying chamber, and the stirring blades and scraper are fixedly connected to the rotating shaft, with the scraper and the upper surface of the fixed plate in contact with each other.
[0007] As an improvement, the diameter and number of the connecting holes and the leaking holes are the same, and the connecting holes and the leaking holes are staggered.
[0008] As an improvement, the moving mechanism includes a moving motor, a lead screw, a moving plate, and a connecting plate; the moving motor is mounted on a fixed box, the lead screw is rotatably mounted inside the fixed box, and the output shaft of the moving motor is fixedly connected to the lead screw; the moving plate is slidably mounted inside the fixed box, and the moving plate is threadedly connected to the lead screw; the connecting plate is mounted inside the fixed box, and one end of the connecting plate is fixedly connected to the sliding plate, and the other end is fixedly connected to the moving plate.
[0009] As an improvement, the inner wall of the fixed box and the moving plate are corresponding cuboid structures, and the moving plate and the inner wall of the fixed box are in close contact with each other; the moving motor is connected to the controller circuit.
[0010] As an improvement, the drying box is provided with a feed hole and a vent hole.
[0011] As an improvement, a blocking net is provided at one end of the connecting pipe that is inserted into the drying box.
[0012] The beneficial effects of this utility model are:
[0013] 1. A drying box is fixedly connected above the melting box. The fixed plate has a drain hole and the sliding plate has a connection hole. By setting up the drying box, plastic granules can be dried. At the same time, the sliding plate can connect the connection hole and the drain hole. After drying, the stirring structure can be used to send the plastic granules into the melting box through the drain hole and the connection hole for convenient feeding.
[0014] 2. The side wall of the melting chamber is connected to a connecting pipe, which is connected to the drying chamber. The high-temperature gas generated in the melting chamber can enter the drying chamber through the connecting pipe, thereby drying the plastic granules in the drying chamber. The high-temperature gas discharged from the melting chamber is reused, eliminating the need for additional heat energy and saving resources. Attached Figure Description
[0015] Figure 1 This is a perspective view of a processing device for removing moisture from injection-molded plastic, according to the present invention.
[0016] Figure 2 This is a perspective view of another aspect of the processing equipment for removing moisture from injection molding materials according to this utility model.
[0017] Figure 3 This is a cross-sectional view of the melting tank of a processing device for removing moisture from injection molding materials according to this utility model.
[0018] Figure 4 This is a cross-sectional view of the drying box of a processing equipment for removing moisture from injection-molded plastic, according to this utility model.
[0019] Figure 5 This is a cross-sectional view of the fixing box of a processing equipment for removing moisture from injection-molded plastic, according to this utility model.
[0020] 1. Processing body; 2. Melting tank; 3. Connecting pipe; 4. Drying oven; 5. Controller; 6. Feed port; 7. Fixed box; 8. Ventilation hole; 9. Heating block; 10. Slot; 11. Sliding plate; 12. Fixed plate; 13. Scraper; 14. Rotating shaft; 15. Rotating motor; 16. Leakage hole; 17. Connecting hole; 18. Connecting plate; 19. Moving plate; 20. Lead screw; 21. Moving motor; 22. Humidity sensor. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] according to Figure 1-5 As shown: This utility model provides a processing device for removing moisture from injection molding plastic: it includes a processing body 1, a melting tank 2 fixedly installed above the processing body 1, and a heating block 9 installed on the inner wall of the melting tank 2; a pipe with a valve is installed at the bottom of the melting tank 2, and the melting tank 2 is connected to the processing body 1 through the pipe; the molten plastic particles can enter the processing body 1 through the pipe to complete the injection molding process.
[0023] like Figure 1 , 2 As shown, a drying box 4 is fixedly connected above the melting box 2, and the drying box 4 is connected to the melting box 2; the drying box 4 is provided with a feed hole 6 and a vent hole 8; a connecting pipe 3 is connected to the side wall of the melting box 2, and the connecting pipe 3 is connected to the drying box 4; a blocking net is provided at one end of the connecting pipe 3 inserted into the drying box 4, which can prevent plastic particles in the drying box 4 from entering the connecting pipe 3.
[0024] A fixed plate 12 is fixedly installed inside the drying oven 4, and a drain hole 16 is provided on the fixed plate 12. A slot 10 is provided inside the drying oven 4 below the fixed plate 12, and a sliding plate 11 is slidably installed in the slot 10, and a connecting hole 17 is provided on the sliding plate 11. The diameter and number of the connecting hole 17 and the drain hole 16 are the same, and the connecting hole 17 and the drain hole 16 are staggered to prevent plastic particles from falling directly into the melting box 2. A stirring structure is provided inside the drying oven 4. A fixed box 7 is fixedly connected to one side of the drying oven 4, and a moving mechanism that can control the sliding plate 11 is provided inside the fixed box 7. A humidity sensor 22 is provided on the inner wall of the drying oven 4, and a controller 5 that is electrically connected to the humidity sensor 22 is provided on the side wall of the drying oven 4, and the controller 5 is electrically connected to the moving mechanism.
[0025] like Figure 4As shown, the stirring structure includes a rotary motor 15, a rotating shaft 14, stirring blades, and a scraper 13. The rotary motor 15 is mounted on the drying chamber 4, and the rotating shaft 14 is fixedly connected to the output shaft of the rotary motor 15. The rotating shaft 14 is located inside the drying chamber 4, and the stirring blades and scraper 13 are fixedly connected to the rotating shaft 14, with the scraper 13 in contact with the upper surface of the fixed plate 12. The stirring structure can stir the plastic granules inside the drying chamber 4, thereby accelerating the drying process. At the same time, the scraper 13 can continuously scrape the plastic granules at the bottom. When feeding, the scraper 13 can push the plastic granules from the drain hole 16 and the connecting hole 17 into the melting chamber 2.
[0026] like Figure 5 As shown, the moving mechanism includes a moving motor 21, a lead screw 20, a moving plate 19, and a connecting plate 18. The moving motor 21 is mounted on the fixed box 7, the lead screw 20 is rotatably mounted inside the fixed box 7, and the output shaft of the moving motor 21 is fixedly connected to the lead screw 20. The moving plate 19 is slidably mounted inside the fixed box 7 and is threadedly connected to the lead screw 20. The connecting plate 18 is mounted inside the fixed box 7, with one end fixedly connected to the sliding plate 11 and the other end fixedly connected to the moving plate 19. The inner wall of the fixed box 7 and the moving plate 19 are corresponding cuboid structures, and the moving plate 19 fits snugly against the inner wall of the fixed box 7, which can restrict the rotation of the moving plate 19, thereby converting the rotation of the lead screw 20 into the movement of the moving plate 19, and driving the sliding plate 11 to slide through the connecting plate 18. The moving motor 21 is electrically connected to the controller 5, facilitating the controller 5's control of the moving motor 21.
[0027] The principle of this utility model
[0028] like Figure 1 , 2 As shown, in this application, plastic granules are added to the drying chamber 4 through the feed port 6. At this time, the drying chamber 4 and the melting chamber 2 are separated by the fixed plate 12 and the sliding plate 11, and the two are not connected. The rotating motor 15 is started, and the plastic granules in the drying chamber 4 are stirred by the stirring blades and scraper 13. At the same time, the melting chamber 2 is already in working condition, and the high-temperature gas in the melting chamber 2 can enter the drying chamber 4 through the connecting pipe 3 to dry the plastic granules without the need for additional heat energy.
[0029] like Figure 4 , 5As shown, the humidity sensor 22 can monitor the humidity inside the drying chamber 4. When the humidity inside the drying chamber 4 reaches the set value, the controller 5 controls the moving motor 21 to start. Under the action of the moving motor 21, the moving plate 19 and the connecting plate 18 drive the sliding plate 11 to slide, so that the connecting hole 17 on the sliding plate 11 is aligned with the drain hole 16 on the fixed plate 12. At this time, under the continuous movement of the stirring structure, the plastic particles in the drying chamber 4 enter the melting chamber 2 through the drain hole 16 and the connecting hole 17, which can complete the rapid feeding.
[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A processing device for removing moisture in a removable injection molding material, comprising a processing body (1), a melting box (2) fixedly arranged above the processing body (1), and a heating block (9) arranged on the inner wall of the melting box (2); characterized in that: a drying box (4) is fixedly connected above the melting box (2), and the drying box (4) is in communication with the melting box (2); a communication pipe (3) is connected to the side wall of the melting box (2), and the communication pipe (3) is in communication with the drying box (4); a fixed plate (12) is fixedly arranged in the drying box (4), and a leakage hole (16) is formed in the fixed plate (12); a slot (10) is formed below the fixed plate (12) in the drying box (4), a sliding plate (11) is slidably arranged in the slot (10), and a connecting hole (17) is formed in the sliding plate (11); a stirring structure is arranged in the drying box (4); a fixed box (7) is fixedly connected to one side of the drying box (4), a moving mechanism capable of controlling the sliding of the sliding plate (11) is arranged in the fixed box (7); a humidity sensor (22) is arranged on the inner wall of the drying box (4), a controller (5) in circuit connection with the humidity sensor (22) is arranged on the side wall of the drying box (4), and the controller (5) is in circuit connection with the moving mechanism. The stirring structure comprises a rotating motor (15), a rotating shaft (14), stirring blades, and a scraper (13); the rotating motor (15) is arranged on the drying box (4), and the rotating shaft (14) is fixedly connected to the output shaft of the rotating motor (15); the rotating shaft (14) is located in the drying box (4), the stirring blades and the scraper (13) are fixedly connected to the rotating shaft (14), and the scraper (13) is in close contact with the upper surface of the fixed plate (12).
2. The processing apparatus for removing moisture from a plastic injection molding according to claim 1, wherein: The diameter and number of the connecting hole (17) and the leakage hole (16) are the same, and the connecting hole (17) and the leakage hole (16) are arranged in a staggered manner.
3. The apparatus for removing moisture from a plastic injection molding according to claim 1, wherein: The moving mechanism comprises a moving motor (21), a lead screw (20), a moving plate (19), and a connecting plate (18); the moving motor (21) is arranged on the fixed box (7), the lead screw (20) is rotatably arranged in the fixed box (7), and the output shaft of the moving motor (21) is fixedly connected to the lead screw (20); the moving plate (19) is slidably arranged in the fixed box (7), and the moving plate (19) is threadedly connected to the lead screw (20); the connecting plate (18) is arranged in the fixed box (7), one end of the connecting plate (18) is fixedly connected to the sliding plate (11), and the other end of the connecting plate (18) is fixedly connected to the moving plate (19).
4. The apparatus for removing moisture from a plastic injection molding according to claim 1, wherein: The inner wall of the fixed box (7) and the moving plate (19) are rectangular parallelepiped structures corresponding to each other, and the moving plate (19) is in close contact with the inner wall of the fixed box (7); the moving motor (21) is in circuit connection with the controller (5).
5. The apparatus for removing moisture from a plastic injection molding according to claim 4, wherein: The drying box (4) is provided with an inlet hole (6) and a ventilation hole (8).
6. The apparatus for removing moisture from a plastic injection molding according to claim 1, wherein: The end of the communication pipe (3) inserted into the drying box (4) is provided with a blocking net.
7. The apparatus for removing moisture from a plastic injection molding according to claim 1, wherein: