A plastic particle stirring and mixing machine

Abstract

The utility model relates to a kind of plastic particle stirring color mixer, including stirring shaft, cylinder and motor, the top opening of the cylinder is equipped with upper cover, the lower part side of this cylinder is equipped with discharge port, the discharge port is equipped with relevant material board, the bottom of the cylinder is equipped with motor, the output shaft of this motor is connected with the stirring shaft placed in cylinder, the outer periphery of the stirring shaft is arranged with helical lifting blade.The utility model stirring shaft outer periphery helical blade pushes the plastic particle in cylinder middle part to move upward, realizes the plastic particle in cylinder middle part to gush upward, then gushing plastic particle diffuses to the edge of cylinder four around, and under the action of gravity, it falls back downward, forms the up and down mixing motion of the diffusion circulation of middle part to four around;The design of helical lifting blade makes the plastic particle form strong up and down circulation flow in cylinder, cooperate the shearing action of blade, and the mixing uniformity is greatly improved, effectively avoid the color difference or performance uneven of finished product.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing equipment technology, specifically a special equipment for stirring and mixing plastic granules. It is suitable for raw material pretreatment processes before plastic processing such as injection molding and extrusion, and can achieve uniform mixing of plastic granules of different colors and grades. Background Technology

[0002] In the plastics processing industry, to obtain plastic products with specific colors or properties, it is usually necessary to uniformly mix various plastic granules (such as base granules of different colors, masterbatches, functional additive granules, etc.). Plastic granule mixing and color blending machines are key equipment for this process, and their mixing effect directly affects the quality stability of the final product.

[0003] Existing plastic granule mixing and coloring machines have the following drawbacks: 1. Traditional mixing shafts mostly use straight blade designs, which can only achieve horizontal mixing. The vertical circulation of plastic granules within the cylinder is insufficient, easily leading to uneven mixing in certain areas, resulting in color differences or performance fluctuations in the finished product. 2. Traditional motors are generally installed at the top of the cylinder, with material added through a window at the bottom and discharged through a discharge port at the bottom. This feeding process is cumbersome. Furthermore, a mixing sleeve is required around the mixing shaft, with both ends of the shaft rotatably connected to the bottom and top cover of the cylinder, making the structure complex and cumbersome. Issues such as connection structure, equipment mobility, and sealing also need to be considered.

[0004] To address the aforementioned issues, it is necessary to design a plastic granule mixing and color blending machine that can achieve uniform mixing, stable operation, and convenient operation. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a plastic granule mixing and coloring machine. The spiral blades on the outer periphery of the mixing shaft push the plastic granules in the middle of the cylinder upward, so that the plastic granules in the middle of the cylinder surge upward. Then the surged plastic granules diffuse to the edges of the cylinder and fall back downward under the action of gravity, forming a vertical mixing motion that diffuses from the middle to the edges. The design of the spiral lifting blades makes the plastic granules form a strong vertical circulation flow in the cylinder. Combined with the shearing action of the blades, the mixing uniformity is greatly improved, effectively avoiding color difference or uneven performance of the finished product.

[0006] The technical solution adopted by this utility model to solve its technical problem is: to provide a plastic granule mixing and coloring machine, including a mixing shaft, a cylinder and a motor. The top opening of the cylinder is equipped with a top cover, and a discharge port is opened on the lower side of the cylinder. A material plate is provided at the discharge port. A motor is installed at the bottom of the cylinder. The output shaft of the motor is connected to the mixing shaft placed in the cylinder. Spiral lifting blades are arranged on the outer periphery of the mixing shaft.

[0007] As a supplement to the technical solution described in this utility model, a limiting groove is provided at the bottom of the stirring shaft, and a limiting part that cooperates with the limiting groove is provided at the end of the motor output shaft.

[0008] As a supplement to the technical solution described in this utility model, the limiting groove is a square groove, and the limiting part has a square block structure.

[0009] As a supplement to the technical solution described in this utility model, a movable frame is also included, and the cylinder is mounted on the movable frame.

[0010] As a supplement to the technical solution described in this utility model, the mobile frame includes a chassis and two columns. Multiple casters are evenly arranged on the bottom of the chassis, and two columns are symmetrically arranged on the upper end of the chassis. The cylinder is fixedly installed between the two columns.

[0011] As a supplement to the technical solution described in this utility model, the top of the stirring shaft is provided with a spherical surface.

[0012] As a supplement to the technical solution described in this utility model, the cylinder and the top cover are connected by a hinge, and multiple flaps are arranged around the circumference of the edge of the upper port of the cylinder, which are used to press down the edge of the top cover.

[0013] As a supplement to the technical solution described in this utility model, the corner at the top of the blade is rounded, and the bottom of the blade is flat.

[0014] Beneficial effects: This utility model relates to a plastic granule mixing and coloring machine, which has the following advantages:

[0015] 1. Significantly improved mixing uniformity: The spiral blades on the outer periphery of the stirring shaft propel the plastic particles in the middle of the cylinder upwards, causing them to surge upwards. The surging plastic particles then diffuse towards the edges of the cylinder and fall back downwards under gravity, forming a circulating mixing motion from the center outwards. The spiral lifting blade design creates a strong upward and downward circulation of plastic particles within the cylinder. Combined with the shearing action of the blades, the mixing uniformity is greatly improved, effectively preventing color differences or uneven performance in the finished product.

[0016] 2. Stable and reliable operation: The stirring shaft and the motor output shaft are connected by a square limiting groove and a limiting part, which ensures stable torque transmission and no relative slippage. After long-term operation, the vibration amplitude is relatively small, which can reduce abnormal noise and component wear and extend the service life of the equipment.

[0017] 3. Convenient and flexible to move. The design of the mobile frame and casters makes the equipment easy to move within the workshop (it can be pushed by a single person) without the need for forklifts or other tools, adapting to the needs of switching between multiple production lines;

[0018] 4. The top cover and the cylinder are secured with multiple snap fasteners to reduce the splashing of particles during mixing, thereby reducing raw material waste and workshop pollution;

[0019] 5. The top of the stirring shaft is spherical. The spherical structure can prevent plastic particles from accumulating on the top of the stirring shaft and reduce dead zones in the stirring process.

[0020] 6. The motor is installed at the bottom of the cylinder, which does not affect the opening or closing of the top cover. The material is added from the top opening of the cylinder and then discharged from the discharge port at the bottom of the cylinder, simplifying the feeding and discharging process. Attached Figure Description

[0021] Figure 1 This is a sectional view of the present invention from the main viewing direction;

[0022] Figure 2 This is the left view of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the stirring shaft described in this utility model;

[0024] Figure 4 This is a schematic diagram of the stirring shaft at different angles described in this utility model.

[0025] Illustration: 1. Stirring shaft, 2. Cylinder, 3. Discharge port, 4. Motor, 5. Top cover, 6. Moving frame, 7. Material closing plate, 8. Limiting part, 9. Blade, 10. Spherical surface, 11. Limiting groove, 12. Chassis, 13. Column, 14. Casters, 15. Hinge, 16. Flip latch, 17. Rounded corner. Detailed Implementation

[0026] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0027] The embodiments of this utility model relate to a plastic granule mixing and coloring machine, such as... Figure 1-4 As shown, it includes a stirring shaft 1, a cylinder 2 and a motor 4. A top cover 5 is installed at the top opening of the cylinder 2. A discharge port 3 is opened on the lower side of the cylinder 2. A material plate 7 is provided at the discharge port 3. A motor 4 is installed at the bottom of the cylinder 2. The output shaft of the motor 4 is connected to the stirring shaft 1 placed inside the cylinder 2. Spiral lifting blades 9 are arranged on the outer periphery of the stirring shaft 1.

[0028] The bottom of the discharge port 3 is a downward sloping surface, which facilitates the sliding out of plastic particles. The closing plate 7 is installed inside the discharge port 3 and can slide up and down to realize the opening and closing of the discharge port 3.

[0029] This plastic granule mixing and coloring machine is a small machine, and the plastic granules it processes are generally less than 300 kg. Therefore, the lower part of the mixing shaft 1 is rotated and supported, while the upper part is suspended, which can ensure the stability of the rotation of the mixing shaft 1.

[0030] The stirring shaft 1 is a solid shaft, and spiral lifting blades 9 are arranged on the outer periphery of the stirring shaft 1. The blades 9 are welded to the stirring shaft 1. The spiral lift angle of the blades 9 is 30°-45° and the pitch is 100-200mm.

[0031] The blade 9 has a rounded corner 17 at the top corner to prevent hand injury, and the bottom of the blade 9 is flat to ensure effective material scooping.

[0032] The bottom of the stirring shaft 1 is provided with a limiting groove 11, and the end of the output shaft of the motor 4 is provided with a limiting part 8 that cooperates with the limiting groove 11. The limiting groove 11 is a square groove, and the limiting part 8 is a square block structure. This square cooperation structure can effectively transmit torque, avoid relative sliding between the stirring shaft 1 and the output shaft of the motor 4, and ensure stable connection.

[0033] It also includes a movable frame 6, on which the cylinder 2 is mounted. The movable frame 6 is made of welded steel pipes and its surface is treated with a spray coating for corrosion protection.

[0034] The mobile frame 6 includes a chassis 12 and two columns 13. The chassis 12 has a rectangular structure and multiple casters 14 are evenly arranged on the bottom of the chassis 12. The casters 14 are universal casters with brakes to facilitate the movement and fixation of the equipment. Two columns 13 are symmetrically arranged on the upper end of the chassis 12. The cylinder 2 is fixedly installed between the two columns 13. The columns 13 are welded to the chassis 12. The cylinder 2 is fixedly installed between the two columns 13 by clamps or bolts to ensure the stability of the mixing process.

[0035] The top of the stirring shaft 1 is provided with a spherical surface 10. The structure of the spherical surface 10 can prevent plastic particles from accumulating on the top of the stirring shaft 1 and reduce the dead corners of the stirring.

[0036] The cylinder 2 and the upper cover 5 are connected by a hinge 15, which allows the upper cover 5 to be flipped up and opened (flipping angle ≥110°) to facilitate feeding and cleaning. A rubber sealing gasket can also be set between the cylinder 2 and the upper cover 5 for sealing. Multiple flip buckles 16 are arranged around the circumference of the upper port edge of the cylinder 2. These flip buckles 16 are used to press down the edge of the upper cover 5.

[0037] The working process of this plastic granule mixing and color blending machine is as follows:

[0038] Feeding stage: Open the flip-top 16, flip the top cover 5 upwards through the hinge 15, pour the plastic granules to be mixed into the cylinder 2 through the top opening according to the ratio, close the top cover 5, rotate the flip-top 16 to press the edge of the top cover to ensure a seal;

[0039] Mixing and coloring stage: Start motor 4, which drives the stirring shaft 1 to rotate. The spiral blades 9 on the outer periphery of the stirring shaft 1 push the plastic particles in the middle of the cylinder 2 upward, causing the plastic particles in the middle of the cylinder 2 to surge upward. Then, the surged plastic particles diffuse to the edges of the cylinder 2 and fall back downward under the action of gravity, forming a circular up-and-down mixing motion that diffuses from the center to the surroundings. The shearing action of the blades 9 and the mutual collision between particles further promote mixing, making different particles evenly dispersed. During the coloring stage, materials can be added as needed.

[0040] Discharge stage: After mixing is completed, the mixing time is usually 1-3 minutes, depending on the type of granules and mixing requirements. Then, turn off the motor 4, open the material closing plate 7 at the discharge port 3, and the uniformly mixed plastic granules are discharged from the discharge port 3 and collected for subsequent processing.

[0041] Moving and cleaning: If the equipment needs to be moved, release the brakes on the casters 14, push the moving frame 6 to move the equipment to the target position, and then lock the brakes; when cleaning is required, open the top cover 5 and clean the inner wall of the cylinder 2 and the stirring shaft 1. The spherical surface 10 at the top of the stirring shaft is designed to reduce material accumulation and facilitate cleaning.

[0042] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0043] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0045] The above provides a detailed description of a plastic granule mixing and coloring machine provided in this application. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A plastic granule mixing and coloring machine, comprising a mixing shaft (1), a cylinder (2), and a motor (4), characterized in that: The top opening of the cylinder (2) is fitted with a top cover (5). The lower side of the cylinder (2) is provided with a discharge port (3). A material plate (7) is provided at the discharge port (3). A motor (4) is installed at the bottom of the cylinder (2). The output shaft of the motor (4) is connected to a stirring shaft (1) placed inside the cylinder (2). Spiral lifting blades (9) are arranged on the outer periphery of the stirring shaft (1). The cylinder (2) is also provided with a moving frame (6). The moving frame (6) includes a chassis (12) and two columns (13). Multiple casters (14) are evenly arranged at the bottom of the chassis (12). Two columns (13) are symmetrically arranged at the top of the chassis (12). The cylinder (2) is fixedly installed between the two columns (13). A spherical surface (10) is arranged at the top of the stirring shaft (1).

2. The plastic granule mixing and coloring machine according to claim 1, characterized in that: The bottom of the stirring shaft (1) is provided with a limiting groove (11), and the end of the output shaft of the motor (4) is provided with a limiting part (8) that cooperates with the limiting groove (11).

3. The plastic granule mixing and coloring machine according to claim 2, characterized in that: The limiting groove (11) is a square groove, and the limiting part (8) has a square block structure.

4. The plastic granule mixing and coloring machine according to claim 1, characterized in that: The cylinder (2) and the top cover (5) are connected by a hinge (15). Multiple flaps (16) are arranged around the circumference of the edge of the upper port of the cylinder (2). The flaps (16) are used to press the edge of the top cover (5).

5. A plastic granule mixing and coloring machine according to claim 1, characterized in that: The blade (9) has a rounded corner (17) at the top corner and the bottom of the blade (9) is flat.

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