Raw material mixing device for rotational molding box

Abstract

The utility model relates to the technical field of rotational molding box raw material mixing, and discloses a rotational molding box raw material mixing device which comprises a mixing bin and an upper cover, the bottom wall of the mixing bin is a conical surface, the upper cover is arranged at an opening in the upper portion of the mixing bin, and a rapid mixing assembly is arranged on the upper cover. The rapid mixing assembly is used for evenly mixing raw materials used before production of the rotational molding box, by reversely starting the motor, an output shaft of the motor can drive the spiral blade to reversely rotate through a series of mechanisms, and when the spiral blade rotates, acting force close to a discharging valve is applied to plastic powder in the mixing bin; the plastic powder can be effectively discharged from the mixing bin, and the problem that in a traditional mode, after being mixed, the plastic powder is fine in particles, has certain viscosity, can be attached into the mixing bin and is not prone to being completely leaked out, so that discharging of the mixed plastic powder is not smooth, and follow-up machining of a rotational molding box is affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of raw material mixing technology for rotomolding boxes, specifically to a raw material mixing device for rotomolding boxes. Background Technology

[0002] There are many reasons why mixing devices are needed for raw materials in the production of rotomolded boxes, including improving product quality, optimizing material properties, reducing costs, meeting specific needs, and improving production efficiency. These reasons together make mixing devices play an important role in the production of rotomolded boxes.

[0003] In traditional methods, plastic powder, due to its fine particles, high moisture content, and stickiness, tends to adhere to the mixing chamber after mixing, making it difficult to remove completely. This results in uneven discharge of the plastic powder after mixing, which reduces the processing efficiency of subsequent rotational molding boxes and is detrimental to the production of rotational molding boxes. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a raw material mixing device for rotational molding boxes. This device solves the problem that in traditional methods, plastic powder, due to its fine particle size, high moisture content, and stickiness, tends to adhere to the mixing chamber after mixing, making it difficult to remove completely. This results in uneven discharge of the plastic powder after mixing, which reduces the processing efficiency of subsequent rotational molding boxes and is detrimental to rotational molding box production.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rotomolding box raw material mixing device, comprising a mixing chamber and a top cover, wherein the bottom wall of the mixing chamber is a conical surface, the top cover is disposed at the upper opening of the mixing chamber, and a rapid mixing component is disposed on the top cover;

[0008] The rapid mixing assembly is used to uniformly mix the raw materials used before the production of the rotational molding box. The rapid mixing assembly includes a rotating cylinder, a first fixed frame, a rotating shaft, a first helical gear, a central column, a large gear, and a motor.

[0009] The rotating drum in the rapid mixing assembly is rotatably connected to the center of the upper cover. The lower end of the rotating drum is provided with multiple lifting and stirring components for stirring plastic raw material powder. The lifting and stirring components include a first fixed frame, which is fixedly connected to the lower outer surface of the rotating drum.

[0010] Preferably, the rotating shaft is rotatably connected to the lower end of the first fixed frame, and a fixed sleeve is fixedly sleeved on the outer surface of the rotating shaft. A spiral blade is fixedly sleeved on the outer surface of the fixed sleeve, and the spiral blade is adapted to the bottom wall of the mixing chamber.

[0011] Preferably, the central column is rotatably connected inside the rotating cylinder, and a helical gear is fixedly sleeved at the lower end of the central column, while a large gear is fixedly sleeved on the outer surface of the upper end of the rotating cylinder.

[0012] Preferably, the first helical gear is fixedly sleeved on the end of the rotating shaft near the helical gear, the first helical gear meshes with the helical gear, and a second fixing frame is fixedly connected to the upper cover, the second fixing frame being fixedly connected to the upper end of the central column.

[0013] Preferably, the motor is fixedly connected to the upper cover, and a motor gear is fixedly sleeved on the outer surface of the output shaft of the upper cover, and the motor gear meshes with the large gear.

[0014] Preferably, a fixed base is fixedly connected to the lower end of the mixing chamber, a discharge valve is fixedly connected to the middle position of the lower end of the mixing chamber, and a feed inlet is fixedly connected to the upper cover.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a raw material mixing device for rotational molding boxes, which has the following beneficial effects:

[0017] 1. The raw material mixing device of this rotomolding box uses a reverse-start motor. The output shaft of the motor drives the spiral blades to rotate in the opposite direction through a series of mechanisms. When the spiral blades rotate, they apply a force to the plastic powder in the mixing chamber, close to the discharge valve, so that the plastic powder can be effectively discharged from the mixing chamber. This avoids the problem in the traditional method where the plastic powder, due to its fine particles, high moisture content, and certain stickiness, adheres to the mixing chamber after mixing and is not easy to remove completely. This results in uneven discharge of the plastic powder after mixing, which reduces the processing efficiency of the subsequent rotomolding box and is not conducive to the production of rotomolding boxes.

[0018] 2. The rotomolding box raw material mixing device uses a rotating helical gear to drive the spiral blades to rotate via a rotating shaft and a fixed sleeve. The rotating spiral blades can apply an upward force to the plastic powder on the bottom wall of the mixing chamber, which can drive the plastic powder in the mixing chamber obliquely upward, so that the plastic powder can be uniformly mixed in the vertical space of the mixing chamber. Furthermore, since the spiral blades also rotate around the helical gear when they rotate, the plastic powder in the radial direction in the mixing chamber can also be uniformly mixed. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the central column structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the helical gear structure of this utility model.

[0022] In the diagram: 1. Mixing chamber; 2. Top cover; 3. Rotating cylinder; 4. First fixed frame; 5. Rotating shaft; 6. Fixed sleeve; 7. Spiral blade; 8. First helical gear; 9. Central column; 10. Helical gear; 11. Large gear; 12. Second fixed frame; 13. Motor; 14. Motor gear; 15. Feed inlet; 16. Fixed base; 17. Discharge valve. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, greater than, less than, and more than are understood to exclude the number itself, while above, below, and within are understood to include the number itself. If the first and second are mentioned, they are only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Please see Figure 1-3 This utility model provides a new technical solution: a rotomolding box raw material mixing device, including a mixing chamber 1 and an upper cover 2. The bottom wall of the mixing chamber 1 is a conical surface, and the upper cover 2 is set at the upper opening of the mixing chamber 1. A rapid mixing component is provided on the upper cover 2.

[0028] The rapid mixing assembly is used to uniformly mix the raw materials used before the production of the rotational molding box. The rapid mixing assembly includes a rotating cylinder 3, a first fixed frame 4, a rotating shaft 5, a first helical gear 8, a central column 9, a large gear 11, and a motor 13.

[0029] The rotating cylinder 3 in the rapid mixing assembly is rotatably connected to the center of the upper cover 2. The lower end of the rotating cylinder 3 is provided with multiple lifting and stirring components for stirring plastic raw material powder. The lifting and stirring components include a first fixing frame 4, which is fixedly connected to the lower outer surface of the rotating cylinder 3.

[0030] Furthermore, the rotating shaft 5 is rotatably connected to the lower end of the first fixed frame 4, and a fixed sleeve 6 is fixedly sleeved on the outer surface of the rotating shaft 5. A spiral blade 7 is fixedly sleeved on the outer surface of the fixed sleeve 6, and the spiral blade 7 is adapted to the bottom wall of the mixing chamber 1.

[0031] Furthermore, the central column 9 is rotatably connected inside the rotating cylinder 3, and a helical gear 10 is fixedly sleeved at the lower end of the central column 9, while a large gear 11 is fixedly sleeved on the upper outer surface of the rotating cylinder 3.

[0032] Furthermore, the first helical gear 8 is fixedly sleeved on the end of the rotating shaft 5 near the helical gear 10, and the first helical gear 8 is meshed with the helical gear 10. The upper cover 2 is fixedly connected to the second fixing bracket 12, and the second fixing bracket 12 is fixedly connected to the upper end of the central column 9.

[0033] Furthermore, the motor 13 is fixedly connected to the upper cover 2, and the output shaft of the upper cover 2 is fixedly sleeved with a motor gear 14, which meshes with the large gear 11.

[0034] Furthermore, a fixed base 16 is fixedly connected to the lower end of the mixing chamber 1, a discharge valve 17 is fixedly connected to the middle position of the lower end of the mixing chamber 1, and a feed inlet 15 is fixedly connected to the upper cover 2.

[0035] Furthermore, during use, the output shaft of the motor 13 drives the motor gear 14 to rotate. The rotating motor gear 14 drives the rotating cylinder 3 to rotate via the large gear 11. The rotating cylinder 3 drives the first fixed frame 4 on it to rotate together. When the first fixed frame 4 rotates, it drives the rotating shaft 5 and the spiral blades 7 on the fixed sleeve 6 to rotate around in the mixing chamber 1. Since the first helical gear 8 meshes with the helical gear 10, the first helical gear 8 can be driven to rotate by the helical gear 10 when the lifting stirring component rotates around the helical gear 10. The rotating first helical gear 8 can drive the spiral blades 7 to rotate via the rotating shaft 5 and the fixed sleeve 6. The rotating spiral blades 7 can apply an upward force to the plastic powder on the bottom wall of the mixing chamber 1. This allows the plastic powder in the mixing chamber 1 to be driven obliquely upward, so that the plastic powder can be evenly mixed in the vertical space of the mixing chamber 1. Furthermore, since the spiral blades 7 also rotate around the helical gear 10 when they rotate, the plastic powder in the radial direction in the mixing chamber 1 can also be evenly mixed.

[0036] Furthermore, after mixing is complete, the motor 13 is started in reverse. The output shaft of the motor 13 drives the spiral blade 7 to rotate in the opposite direction through a series of mechanisms. When the spiral blade 7 rotates, it applies a force close to the discharge valve 17 to the plastic powder in the mixing chamber 1, so that the plastic powder can be effectively discharged from the mixing chamber 1. This avoids the problem in the traditional method where the plastic powder, due to its fine particles, high moisture content, and certain stickiness, will adhere to the mixing chamber after mixing and is not easy to remove completely. This makes the discharge of plastic powder after mixing not smooth, which will reduce the processing efficiency of the subsequent rotational molding box and is not conducive to the production of rotational molding boxes.

[0037] Working principle: During use, the output shaft of the motor 13 drives the motor gear 14 to rotate. The rotating motor gear 14 drives the rotating cylinder 3 to rotate through the large gear 11. The rotating cylinder 3 drives the first fixed frame 4 on it to rotate together. When the first fixed frame 4 rotates, it drives the rotating shaft 5 and the spiral blades 7 on the fixed sleeve 6 to rotate around in the mixing chamber 1. Since the first helical gear 8 meshes with the helical gear 10, the first helical gear 8 can be driven to rotate by the helical gear 10 when the lifting and stirring components rotate around the helical gear 10. The rotating first helical gear 8 can drive the spiral blades 7 to rotate through the rotating shaft 5 and the fixed sleeve 6. The rotating spiral blades 7 can apply an upward force to the plastic powder on the bottom wall of the mixing chamber 1. This allows the plastic powder in the mixing chamber 1 to be driven obliquely upward, so that the plastic powder can be evenly mixed in the vertical space of the mixing chamber 1. Furthermore, since the spiral blades 7 also rotate around the helical gear 10 when they rotate, the plastic powder in the radial direction in the mixing chamber 1 can also be evenly mixed.

[0038] Furthermore, after mixing is complete, the motor 13 is started in reverse. The output shaft of the motor 13 can drive the spiral blade 7 to rotate in the opposite direction through a series of mechanisms. When the spiral blade 7 rotates, it will apply a force close to the discharge valve 17 to the plastic powder in the mixing chamber 1, so that the plastic powder can be effectively discharged from the mixing chamber 1.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material mixing device for rotational molding, characterized in that: It includes a mixing chamber (1) and a top cover (2). The bottom wall of the mixing chamber (1) is a conical surface, and the top cover (2) is located at the opening above the mixing chamber (1). A rapid mixing component is provided on the top cover (2). The rapid mixing assembly is used to uniformly mix the raw materials used before the production of the rotational molding box. The rapid mixing assembly includes a rotating cylinder (3), a first fixed frame (4), a rotating shaft (5), a first helical gear (8), a central column (9), a large gear (11), and a motor (13). The rotating cylinder (3) in the rapid mixing assembly is rotatably connected to the center of the upper cover (2). The lower end of the rotating cylinder (3) is provided with multiple lifting and stirring components for stirring plastic raw material powder. The lifting and stirring components include a first fixed frame (4), which is fixedly connected to the lower outer surface of the rotating cylinder (3).

2. The raw material mixing device for rotational molding box according to claim 1, characterized in that: The rotating shaft (5) is rotatably connected to the lower end of the first fixed frame (4). A fixed sleeve (6) is fixedly sleeved on the outer surface of the rotating shaft (5). A spiral blade (7) is fixedly sleeved on the outer surface of the fixed sleeve (6). The spiral blade (7) is adapted to the bottom wall of the mixing chamber (1).

3. The raw material mixing device for rotational molding box according to claim 1, characterized in that: The central column (9) is rotatably connected inside the rotating cylinder (3). The lower end of the central column (9) is fixedly sleeved with a helical gear (10), and the large gear (11) is fixedly sleeved on the upper outer surface of the rotating cylinder (3).

4. The raw material mixing device for roto-molding box according to claim 1, characterized in that: The first helical gear (8) is fixedly sleeved on the end of the rotating shaft (5) near the helical gear (10). The first helical gear (8) meshes with the helical gear (10). A second fixing bracket (12) is fixedly connected to the upper cover (2). The second fixing bracket (12) is fixedly connected to the upper end of the central column (9).

5. The raw material mixing device for rotational molding box according to claim 4, characterized in that: The motor (13) is fixedly connected to the upper cover (2), and the output shaft of the upper cover (2) is fixedly sleeved with a motor gear (14), which meshes with the large gear (11).

6. The raw material mixing device for roto-molding box according to claim 1, wherein: The lower end of the mixing chamber (1) is fixedly connected to a fixed seat (16), the middle part of the lower end of the mixing chamber (1) is fixedly connected to a discharge valve (17), and the upper cover (2) is fixedly connected to a feed inlet (15).

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