Plastic meal box injection molding raw material mixing and stirring equipment

Abstract

This utility model discloses a mixing and stirring device for injection molding raw materials of plastic lunch boxes, including a mixing tank. A rotatable stirring assembly is installed inside the mixing tank. A tank cover is threaded to the top of the mixing tank, and a circular hole is opened in the center of the tank cover. A rotatable water distribution box is installed inside the circular hole. Multiple nozzles are fixedly connected to the bottom of the water distribution box, and an infusion pipe is fixedly connected to the top of the water distribution box. This utility model allows external cleaning fluid to be injected into the water distribution box through the infusion pipe, and the cleaning fluid can be sprayed out using the nozzles to clean the inside of the mixing tank, making the device easy to clean. An electric push rod inserts a pin into a slot, and starting the motor rotates the stirring shaft, which in turn rotates the water distribution box and scraper, facilitating spraying of different areas inside the mixing tank and improving the cleaning effect of the device.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding raw material mixing and stirring technology, specifically a mixing and stirring device for injection molding raw materials of plastic lunch boxes. Background Technology

[0002] Plastic lunch boxes are portable containers made of food-grade plastic, primarily used for takeout or food storage. They are characterized by strong sealing, high temperature resistance, and a variety of styles. The most common material is PP, which can withstand boiling water sterilization and short-term microwave heating, but attention should be paid to the upper temperature limit and high-oil, high-sugar foods should be avoided. Plastic lunch boxes are also available in various styles and sizes. Square plastic lunch boxes can be used to store various condiments. Rectangular plastic lunch boxes are easy to store foods with moisture, such as fruits, vegetables, and seafood. Round plastic lunch boxes are suitable for storing sauces, gravy, and various side dishes. During production, plastic lunch boxes are usually injection molded using molds. Before injection molding, the raw materials are usually mixed using mixing equipment to ensure the quality of the injection molding.

[0003] In the prior art, Chinese patent CN221985493U discloses a mixing device for injection molding raw materials, including a mixing tank. A mixing motor is provided on the bottom surface of the mixing tank, and a mixing rod is fixedly connected to the output end of the mixing motor through the bottom of the mixing tank. In this utility model, by setting a mixing motor and using a control panel to control the mixing motor to drive the mixing rod to rotate, the first mixing component and the second mixing component can mix the injection molding raw materials in the mixing tank. The first mixing component consists of three sets of blades with gradually decreasing lengths, and the second mixing component consists of a first arc-shaped rod, a second arc-shaped rod, and a material-pushing plate. There is a gap between the first arc-shaped rod and the second arc-shaped rod, and one end of the material-pushing plate is pointed.

[0004] However, the raw material mixing and stirring device provided in the above technical solution still has many shortcomings in actual use. For example, the complex internal structure makes it difficult to clean the inside of the device after mixing and stirring the injection molding raw materials, which makes cleaning very troublesome and thus makes it less practical. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To address the problem mentioned in the background art that the internal structure of the raw material mixing and stirring device is complex, making it difficult to clean the inside of the device after mixing and stirring the injection molding raw materials, resulting in very troublesome cleaning and poor practicality, the present invention adopts the following technical solution.

[0007] A mixing and stirring device for injection molding raw materials of plastic lunch boxes includes a mixing tank. The mixing tank is equipped with a rotatable stirring component inside. The top of the mixing tank is threadedly connected to a tank cover. A circular hole is opened in the middle of the tank cover. A rotatable water distribution box is installed inside the circular hole. Multiple nozzles are fixedly connected to the bottom of the water distribution box. An infusion pipe is fixedly connected to the top of the water distribution box.

[0008] Preferably, the vertical centerline of the mixing tank coincides with the vertical centerline of the water distribution box, the multiple nozzles are evenly distributed in a ring about the vertical centerline of the water distribution box, and the inner diameter of the circular hole of the tank cover matches the outer diameter of the water distribution box.

[0009] Preferably, the stirring assembly includes a stirring shaft, stirring blades, and a motor. The stirring shaft is installed inside the mixing tank, and the bottom end of the stirring shaft is rotatably connected to the bottom of the mixing tank through a sealed bearing. The stirring blades are fixedly connected to the outside of the stirring shaft, and the motor is fixedly connected to the bottom of the mixing tank. The output end of the motor is fixedly connected to the stirring shaft.

[0010] Preferably, the stirring blade has multiple evenly distributed through holes, and a scraper is fixedly connected to the end of the stirring blade. The end of the scraper contacts the inner wall of the mixing tank, and the multiple stirring blades are evenly distributed in a ring about the central axis of the stirring shaft.

[0011] Preferably, a slot is fixedly connected to the top end of the stirring shaft, an electric push rod is fixedly connected to the bottom center line of the water distribution box, and a pin is fixedly connected to the end of the electric push rod. The outer dimensions of the pin match the inner dimensions of the slot, and the pin has a prism structure.

[0012] Preferably, the top of the can lid is provided with an annular groove, and multiple connecting brackets are fixedly connected to the outside of the water distribution box. The connecting brackets are slidably connected to the annular groove, and the multiple connecting brackets are evenly distributed in a ring about the vertical center line of the water distribution box.

[0013] Preferably, an insulation sleeve is fixedly connected to the outside of the mixing tank, a discharge valve is fixedly connected to the bottom of the mixing tank, and a support frame is fixedly connected to the outside of the bottom of the mixing tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention allows external cleaning fluid to be injected into the water distribution box via an infusion tube. The cleaning fluid is then sprayed out using nozzles to clean the inside of the mixing tank, making the device easy to clean. An electric push rod inserts a pin into a slot, and starting the motor rotates the stirring shaft, which in turn rotates the water distribution box and the scraper. This facilitates spraying different areas inside the mixing tank, thereby improving the cleaning effect of the device. Furthermore, the scraper can scrape off residual raw materials from the inner wall of the mixing tank while rotating, further enhancing the cleaning capability of the device. The use of the annular groove and connecting frame ensures the stability of the water distribution box rotation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the stirring blade of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the water distribution box of this utility model;

[0020] Figure 5 This is a schematic diagram of the overall front view of the present invention.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] 1. Mixing tank; 2. Tank lid; 3. Water distribution box; 4. Nozzle; 5. Infusion pipe; 6. Stirring shaft; 7. Stirring blade; 8. Motor; 9. Through hole; 10. Scraper; 11. Slot; 12. Electric push rod; 13. Pin; 14. Annular groove; 15. Connecting frame; 16. Insulation sleeve; 17. Discharge valve; 18. Support frame. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0026] Please see Figure 1-5 One embodiment of this utility model is a mixing and stirring device for injection molding raw materials of plastic lunch boxes, including a mixing tank 1. The top of the mixing tank 1 is threadedly connected to a tank cover 2. An insulation sleeve 16 is fixedly connected to the outside of the mixing tank 1. A discharge valve 17 is fixedly connected to the bottom of the mixing tank 1. A support frame 18 is fixedly connected to the outside of the bottom of the mixing tank 1. The support frame 18 can support the device on the external horizontal surface to prevent wear between the bottom of the mixing tank 1 and the external horizontal surface. The mixing tank 1 is opened by rotating the tank cover 2, and the injection molding raw materials are poured into the mixing tank 1.

[0027] In this embodiment, a stirring shaft 6 is installed inside the mixing tank 1. The bottom end of the stirring shaft 6 is rotatably connected to the bottom of the mixing tank 1 through a sealed bearing. A stirring blade 7 is fixedly connected to the outside of the stirring shaft 6. A motor 8 is fixedly connected to the bottom of the mixing tank 1. The output end of the motor 8 is fixedly connected to the stirring shaft 6. Multiple evenly distributed through holes 9 are opened on the stirring blade 7. A scraper 10 is fixedly connected to the end of the stirring blade 7. The end of the scraper 10 contacts the inner wall of the mixing tank 1. Multiple stirring blades 7 are evenly distributed in a ring about the central axis of the stirring shaft 6. When the motor 8 is started, the stirring shaft 6 rotates, which drives the stirring blade 7 and the scraper 10 to rotate. The rotation of the stirring blade 7 stirs and mixes the raw materials inside the mixing tank 1. The through holes 9 are designed to allow some material to pass through the stirring blade 7, thereby reducing the resistance during stirring. After stirring is completed, the discharge valve 17 is opened. With the use of an external discharge pipe, the material in the mixing tank 1 can be discharged, completing the mixing of the injection molding raw materials. The heat insulation sleeve 16 is designed to keep the raw materials warm during mixing.

[0028] In this embodiment, a circular hole is provided in the middle of the tank cover 2, and a rotatable water distribution box 3 is provided inside the circular hole. Multiple nozzles 4 are fixedly connected to the bottom of the water distribution box 3, and an infusion pipe 5 is fixedly connected to the top of the water distribution box 3. The vertical center line of the mixing tank 1 coincides with the vertical center line of the water distribution box 3. The multiple nozzles 4 are evenly distributed in a ring about the vertical center line of the water distribution box 3. The inner diameter of the circular hole of the tank cover 2 matches the outer diameter of the water distribution box 3. External cleaning liquid can be injected into the water distribution box 3 through the infusion pipe 5, and the cleaning liquid can be sprayed out by the nozzles 4 to clean the inside of the mixing tank 1, making this device easy to clean.

[0029] In this embodiment, a slot 11 is fixedly connected to the top of the stirring shaft 6, and an electric push rod 12 is fixedly connected to the bottom center line of the water distribution box 3. A pin 13 is fixedly connected to the end of the electric push rod 12. The outer dimensions of the pin 13 match the inner dimensions of the slot 11. The pin 13 has a "prism" structure. The electric push rod 12 is used to insert the pin 13 into the slot 11. Starting the motor 8 can make the stirring shaft 6 rotate, which drives the water distribution box 3 and the scraper 10 to rotate, thereby facilitating spraying at different positions in the mixing tank 1, thereby improving the cleaning effect of the device. When the scraper 10 rotates, it can scrape off the raw materials remaining on the inner wall of the mixing tank 1, further improving the cleaning ability of the device.

[0030] In this embodiment, the top of the can lid 2 is provided with an annular groove 14, and multiple connecting brackets 15 are fixedly connected to the outside of the water distribution box 3. The connecting brackets 15 and the annular groove 14 are slidably connected. The multiple connecting brackets 15 are evenly distributed in a ring about the vertical center line of the water distribution box 3. Through the cooperation of the annular groove 14 and the connecting brackets 15, the stability of the rotation of the water distribution box 3 can be guaranteed.

[0031] Working principle: When using this device, the support frame 18 first supports the device on the external horizontal surface to prevent wear between the bottom of the mixing tank 1 and the external horizontal surface. Rotate the tank cover 2 to open the mixing tank 1 and pour the injection molding raw material into the mixing tank 1. Start the motor 8 to make the stirring shaft 6 rotate, which drives the stirring blade 7 and scraper 10 to rotate. The stirring blade 7 rotates to stir and mix the raw material inside the mixing tank 1. The through hole 9 is set to allow some material to pass through the stirring blade 7, thereby reducing the resistance during stirring. After stirring is completed, open the discharge valve 17. With the use of the external discharge pipe, the material in the mixing tank 1 can be discharged, completing the mixing of the injection molding raw material. The heat insulation sleeve 16 can play a role in heat preservation during the mixing of the raw material.

[0032] After mixing, external cleaning solution can be injected into the water distribution box 3 through the infusion pipe 5. The cleaning solution can be sprayed out using the nozzle 4 to clean the inside of the mixing tank 1, making the device easy to clean. The electric push rod 12 is used to insert the pin 13 into the slot 11. Starting the motor 8 can make the stirring shaft 6 rotate, which drives the water distribution box 3 and the scraper 10 to rotate, thereby facilitating spraying of different positions inside the mixing tank 1, thereby improving the cleaning effect of the device. When the scraper 10 rotates, it can scrape off the raw materials remaining on the inner wall of the mixing tank 1, further improving the cleaning ability of the device. The use of the annular groove 14 and the connecting frame 15 can ensure the stability of the rotation of the water distribution box 3.

[0033] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A mixing and stirring device for injection molding raw materials of plastic lunch boxes, comprising a mixing tank (1), characterized in that: The mixing tank (1) is equipped with a rotatable stirring assembly inside. The top of the mixing tank (1) is threaded with a tank cover (2). A round hole is opened in the middle of the tank cover (2). A rotatable water distribution box (3) is installed inside the round hole. Multiple nozzles (4) are fixedly connected to the bottom of the water distribution box (3). An infusion tube (5) is fixedly connected to the top of the water distribution box (3).

2. The mixing and stirring equipment for plastic lunch box injection molding raw materials according to claim 1, characterized in that: The vertical center line of the mixing tank (1) coincides with the vertical center line of the water distribution box (3), and multiple nozzles (4) are evenly distributed in a ring about the vertical center line of the water distribution box (3). The inner diameter of the round hole of the tank cover (2) matches the outer diameter of the water distribution box (3).

3. The mixing and stirring equipment for plastic lunch box injection molding raw materials according to claim 2, characterized in that: The stirring assembly includes a stirring shaft (6), stirring blades (7) and a motor (8). The stirring shaft (6) is installed inside the mixing tank (1). The bottom end of the stirring shaft (6) is rotatably connected to the bottom of the mixing tank (1) through a sealed bearing. The stirring blades (7) are fixedly connected to the outside of the stirring shaft (6). The motor (8) is fixedly connected to the bottom of the mixing tank (1). The output end of the motor (8) is fixedly connected to the stirring shaft (6).

4. The mixing and stirring equipment for plastic lunch box injection molding raw materials according to claim 3, characterized in that: The stirring blade (7) has multiple evenly distributed through holes (9), and a scraper (10) is fixedly connected to the end of the stirring blade (7). The end of the scraper (10) is in contact with the inner wall of the mixing tank (1), and the multiple stirring blades (7) are evenly distributed in a ring about the central axis of the stirring shaft (6).

5. The mixing and stirring equipment for plastic lunch box injection molding raw materials according to claim 4, characterized in that: The top end of the stirring shaft (6) is fixedly connected to a slot (11), the bottom center line of the water distribution box (3) is fixedly connected to an electric push rod (12), the end of the electric push rod (12) is fixedly connected to a pin (13), the outer dimension of the pin (13) matches the inner dimension of the slot (11), and the structure of the pin (13) is a "prism" structure.

6. The mixing and stirring equipment for plastic lunch box injection molding raw materials according to claim 5, characterized in that: The top of the can lid (2) is provided with an annular groove (14), and multiple connecting brackets (15) are fixedly connected to the outside of the water distribution box (3). The connecting brackets (15) and the annular groove (14) are slidably connected. The multiple connecting brackets (15) are evenly distributed in a ring about the vertical center line of the water distribution box (3).

7. The mixing and stirring equipment for plastic lunch box injection molding raw materials according to claim 6, characterized in that: An insulation sleeve (16) is fixedly connected to the outside of the mixing tank (1), a discharge valve (17) is fixedly connected to the bottom of the mixing tank (1), and a support frame (18) is fixedly connected to the bottom outside of the mixing tank (1).

Images