Plastic drying device for injection molding machining

Abstract

The utility model belongs to the field of injection molding processing, particularly relates to a plastic drying device for injection molding processing, and provides the following scheme aiming at the problems that pungent smell is easily generated when part of existing plastic (such as PVC (Polyvinyl Chloride), PE (Poly Ethylene) and the like) is heated and dried, the surrounding working environment is easily influenced by direct emission, and the use limitation exists: the plastic drying device comprises a base, the top of the shell is rotatably connected with a shell, a discharge port is formed in one side of the shell, a feed hopper is fixedly mounted on the other side of the shell, and a sealing cover is hinged to the top of the feed hopper; the two mounting plates are fixedly arranged in the shell, a rotary drum with a through hole is rotatably mounted between the two mounting plates, and a plurality of heating pipes are further fixedly mounted between the two mounting plates; according to the plastic particle drying device, extracted moisture and pungent gas can be absorbed and filtered, it is avoided that the moisture and pungent gas are exhausted into air to affect workers, plastic particles can be driven to roll over and be stirred, and the drying quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to a plastic drying device for injection molding. Background Technology

[0002] Injection molding is a highly efficient molding technology widely used in manufacturing. Its core process involves injecting molten plastic particles into a mold, which then cools and solidifies to obtain a product of the desired shape. Before injection molding, the plastic particles need to be dried to remove any moisture.

[0003] A search revealed that patent CN218111365U discloses a drying device for processing plastic particles. However, this device has the following shortcomings in use:

[0004] 1. Some plastics (such as PVC, PE, etc.) are prone to producing a pungent odor when heated and dried. Direct discharge can easily affect the surrounding working environment, thus limiting their use.

[0005] Therefore, we propose a plastic drying device for injection molding. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies where some plastics (such as PVC and PE) easily produce pungent odors during heating and drying, and direct discharge can easily affect the surrounding working environment, thus limiting their use. Therefore, this invention proposes a plastic drying device for injection molding.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A plastic drying device for injection molding, comprising:

[0009] The base has a housing rotatably connected to its top. The housing has a discharge port on one side and a feed hopper fixedly installed on the other side. A sealing cover is hinged to the top of the feed hopper.

[0010] Two mounting plates are fixedly disposed inside the housing, and a rotating cylinder with through holes is rotatably mounted between the two mounting plates. Multiple heating tubes are also fixedly mounted between the two mounting plates.

[0011] The ventilation system includes a vent pipe fixedly installed through the side wall of the housing, a filter box fixedly installed on the top of the housing, and a fan. The vent pipe is equipped with a one-way valve. The fan is connected to the filter box through a pipe. The filter box is connected to the top and side of the housing through a first hose and a second hose, respectively.

[0012] The stirring mechanism is located inside the rotating drum;

[0013] The drive mechanism is located on the outside of the housing and is connected to the rotating drum drive.

[0014] The sealing mechanism is slidably installed at the discharge port.

[0015] In one possible design, the stirring mechanism includes a first motor and a first rotating shaft that extends laterally through the housing. The outer wall of the first rotating shaft is provided with multiple stirring racks. The first motor is fixedly installed on the outside of the housing and its output shaft is coaxially connected to the first rotating shaft.

[0016] In one possible design, the drive mechanism includes a gear ring fixedly disposed on the outer wall of the rotating drum and a second motor fixedly mounted on the outside of the housing, wherein the output end of the second motor is connected to a gear that meshes with the gear ring.

[0017] In one possible design, the sealing mechanism includes a mounting bracket located outside the discharge port, a baffle slidably disposed within the mounting bracket, and an adjusting screw threaded through the mounting bracket, the end of which is rotatably connected to the baffle.

[0018] In one possible design, the filter box has four staggered grids, with a first filter box and a second filter box inserted between adjacent grids. The first filter box is filled with silica gel desiccant, and the second filter box is filled with activated carbon blocks. The top of the filter box is hinged with a sealing cap.

[0019] In one possible design, hydraulic cylinders are hinged between the two sides of the housing and the base via mounting seats, and the telescopic ends of the hydraulic cylinders are in active contact with the bottom of the housing.

[0020] In this application, during use, plastic particles are fed into the rotating drum from the feed hopper and the feed hopper is closed. Then, the first motor is started to drive the first rotating shaft and the stirring frame to rotate, stirring the plastic particles. Then, the second motor is started, and under the action of gears and gear rings, it drives the rotating drum to rotate, causing the plastic particles to tumble. Then, the heating tube is started to heat and dry the plastic particles. Then, the fan is started, and under the action of the one-way valve, the gas enters the shell from the outside in one direction, and enters the filter box through the first hose and the second hose. Silica gel desiccant absorbs moisture, and activated carbon blocks absorb odor gases to ensure the quality of the emitted gas. After drying, the operator manually rotates the screw, which drives the baffle to disengage from the discharge port. Then, the hydraulic rod is started to drive the shell to rotate, so that the plastic particles flow along the rotating drum and out of the discharge port, falling into the pre-prepared collection device.

[0021] Beneficial effects: In this utility model, the plastic drying device for injection molding can absorb and filter the extracted moisture and pungent gases through the arrangement of multiple structures such as filter box, first filter box and second filter box, so as to avoid the emission into the air and affect the workers.

[0022] In this utility model, the plastic drying device for injection molding, through the arrangement of multiple structures such as a rotating drum, a first rotating shaft and a stirring rack, can drive the plastic particles to tumble and stir, thus ensuring the quality of drying;

[0023] In this invention, the extracted moisture and pungent gases can be absorbed and filtered to prevent them from being released into the air and affecting workers. It can also cause the plastic particles to tumble and be stirred, ensuring the quality of drying. Attached Figure Description

[0024] Figure 1 This is a first-view three-dimensional structural diagram of a plastic drying device for injection molding proposed in this utility model.

[0025] Figure 2 This is a second-view overall three-dimensional structural schematic diagram of a plastic drying device for injection molding proposed in this utility model.

[0026] Figure 3 This is a cross-sectional structural diagram of a plastic drying device for injection molding proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of the filter box of a plastic drying device for injection molding proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the sealing mechanism of a plastic drying device for injection molding proposed in this utility model.

[0029] In the diagram: 1. Base; 2. Housing; 3. Mounting seat; 4. Hydraulic cylinder; 5. Vent pipe; 6. First motor; 7. Second motor; 8. Feed hopper; 9. Filter box; 10. Fan; 11. First hose; 12. Second hose; 13. Mounting plate; 14. Rotary drum; 15. First rotating shaft; 16. Discharge port; 17. Gear ring; 18. Second rotating shaft; 19. Gear; 20. Heating tube; 21. Grid plate; 22. First filter box; 23. Second filter box; 24. Mounting bracket; 25. Baffle; 26. Screw. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example 1: Refer to Figures 1-5 A drying apparatus, comprising:

[0032] The base 1 has a housing 2 rotatably connected to its top. In the initial stage, the bottom of the housing 2 is in contact with the surface of the base 1, which can provide stable support for the housing 2. The housing 2 has a discharge port 16 on one side and a feed hopper 8 fixedly installed on the other side. The top of the feed hopper 8 is hinged with a sealing cover to close the feed port.

[0033] Two mounting plates 13 are fixedly installed inside the housing 2. A rotating cylinder 14 with through holes is rotatably installed between the two mounting plates 13. The rotating cylinder 14 has through holes distributed on its surface for hot air circulation and plastic granule flipping. Multiple heating tubes 20 are also fixedly installed between the two mounting plates 13 for heating the air inside the housing 2.

[0034] The ventilation system includes a vent pipe 5 fixedly installed through the side wall of the housing 2, a filter box 9 fixedly installed on the top of the housing 2, and a fan 10. The vent pipe 5 is equipped with a one-way valve to allow external air to enter the housing 2 and prevent gas backflow. The fan 10 is connected to the filter box 9 through a pipe. The filter box 9 is connected to the top and side of the housing 2 through a first hose 11 and a second hose 12 respectively to form a circulating air duct, which facilitates the extraction of air from the inside and outside of the rotating drum 14.

[0035] The stirring mechanism is located inside the rotating drum 14. The stirring mechanism includes a first motor 6 and a first rotating shaft 15 that runs horizontally through the housing 2. The outer wall of the first rotating shaft 15 is provided with multiple stirring racks. The first motor 6 is fixedly installed on the outside of the housing 2 and its output shaft is coaxially connected with the first rotating shaft 15 to drive the stirring racks to rotate and agitate the plastic particles.

[0036] The drive mechanism is located on the outside of the housing 2 and is connected to the rotating drum 14 for transmission. The drive mechanism includes a gear ring 17 fixedly disposed on the outer wall of the rotating drum 14 and a second motor 7 fixedly installed on the outside of the housing 2. The output end of the second motor 7 is connected to a gear 19 that meshes with the gear ring 17, thereby driving the rotating drum 14 to rotate.

[0037] A sealing mechanism is slidably disposed at the discharge port 16. The sealing mechanism includes a mounting bracket 24 disposed outside the discharge port 16, a baffle 25 slidably disposed within the mounting bracket 24, and an adjusting screw 26 threaded through the mounting bracket 24. The end of the adjusting screw 26 is rotatably connected to the baffle 25. The position of the baffle 25 can be adjusted by rotating the adjusting screw 26, thereby opening and closing the discharge port 16.

[0038] This application can be used in the field of injection molding, or in other fields applicable to this application.

[0039] Example 2: An improved plastic drying device for injection molding based on Example 1, which is applied to the field of injection molding;

[0040] In another aspect of this embodiment, the filter box 9 is provided with four staggered grid plates 21, and a first filter box 22 and a second filter box 23 are inserted between adjacent grid plates 21. The first filter box 22 is filled with silica gel desiccant for absorbing moisture, and the second filter box 23 is filled with activated carbon blocks for adsorbing odors. The top of the filter box 9 is hinged with a sealing cover to facilitate the replacement of the first filter box 22 and the second filter box 23.

[0041] In another aspect of this embodiment, hydraulic cylinders 4 are hinged between the two sides of the housing 2 and the base 1 via mounting seats 3. The telescopic ends of the hydraulic cylinders 4 are in movable contact with the bottom of the housing 2. The tilt angle of the housing 2 can be adjusted by extending and retracting the hydraulic cylinders 4, which facilitates material discharge.

[0042] However, as is well known to those skilled in the art, the working principles and wiring methods of the hydraulic cylinder 4, the first motor 6, the second motor 7, the fan 10, and the heating tube 20 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0043] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plastic drying device for injection molding, characterized in that, include: A base (1) is rotatably connected to a housing (2) on its top. The housing (2) has a discharge port (16) on one side and a feed hopper (8) fixedly installed on the other side. A sealing cover is hinged to the top of the feed hopper (8). Two mounting plates (13) are fixedly installed inside the housing (2). A rotating cylinder (14) with a through hole is rotatably installed between the two mounting plates (13). Multiple heating tubes (20) are also fixedly installed between the two mounting plates (13). The ventilation system includes a ventilation pipe (5) fixedly installed through the side wall of the housing (2), a filter box (9) fixedly installed on the top of the housing (2), and a fan (10). The ventilation pipe (5) is equipped with a one-way valve. The fan (10) is connected to the filter box (9) through a pipe. The filter box (9) is connected to the top and side of the housing (2) through a first flexible hose (11) and a second flexible hose (12), respectively. The stirring mechanism is located inside the rotating drum (14); The drive mechanism is located on the outside of the housing (2) and is connected to the rotating drum (14) for transmission. The sealing mechanism is slidably located at the discharge port (16).

2. The plastic drying device for injection molding according to claim 1, characterized in that, The stirring mechanism includes a first motor (6) and a first rotating shaft (15) that runs horizontally through the housing (2). The outer wall of the first rotating shaft (15) is provided with multiple stirring racks. The first motor (6) is fixedly installed on the outside of the housing (2) and its output shaft is coaxially connected with the first rotating shaft (15).

3. The plastic drying device for injection molding according to claim 2, characterized in that, The drive mechanism includes a gear ring (17) fixedly disposed on the outer wall of the rotating drum (14) and a second motor (7) fixedly installed on the outer side of the housing (2). The output end of the second motor (7) is connected to a gear (19) that meshes with the gear ring (17).

4. A plastic drying device for injection molding according to claim 3, characterized in that, The sealing mechanism includes a mounting bracket (24) located outside the discharge port (16), a baffle (25) slidably located inside the mounting bracket (24), and an adjusting screw (26) threaded through the mounting bracket (24), the end of which is rotatably connected to the baffle (25).

5. A plastic drying device for injection molding according to claim 4, characterized in that, The filter box (9) is provided with four staggered grid plates (21), and a first filter box (22) and a second filter box (23) are inserted between adjacent grid plates (21). The first filter box (22) is filled with silica gel desiccant, and the second filter box (23) is filled with activated carbon blocks. The top of the filter box (9) is hinged with a sealing cover.

6. A plastic drying device for injection molding according to claim 5, characterized in that, Hydraulic cylinders (4) are hinged between the two sides of the housing (2) and the base (1) via mounting seats (3), and the telescopic ends of the hydraulic cylinders (4) are in contact with the bottom of the housing (2).

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