Plastic lunch box injection molding processing feeding equipment

Abstract

The utility model discloses a kind of plastic meal box injection molding processing feeding equipment, including feed bin, the bottom of the feed bin is fixedly connected with feed pipe, the end of the feed pipe is fixedly connected with distribution bin, the center of distribution bin is provided with hemispheroid, the bottom edge of distribution bin is equipped with a plurality of discharge holes, a plurality of discharge holes are annularly and evenly distributed about the central axis of distribution bin, the inside of the feed pipe is provided with rotatable central shaft, the outside of the central shaft is fixedly connected with helical fin. The utility model utilizes the rotation of helical fin, material can be transported into distribution bin, through the hemispheroid inside distribution bin, can make conveying material flow into the edge of distribution bin, utilize a plurality of discharge holes, can make material flow from the edge of distribution bin, prevent the situation of accumulation when feeding, facilitate the uniform feeding of the device, to improve the quality of feeding.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding material feeding technology, specifically a plastic lunch box injection molding material feeding device. Background Technology

[0002] Plastic lunch boxes are catering utensils made from plastics that meet food contact safety standards. Their core purpose is to hold, store, or transport food. They are commonly found in everyday household use, takeout packaging, and disposable catering scenarios. Their key features are portability and good sealing. Different materials determine their microwaveability, temperature resistance range, and other usage attributes. Injection molding of plastic lunch boxes is the core manufacturing process that involves injecting molten plastic raw materials into a mold cavity, cooling and solidifying them to obtain the finished lunch box. It is characterized by high efficiency, low cost, and the ability to mass-produce complex-shaped products. During the injection molding process of plastic lunch boxes, feeding equipment is often required to input the raw materials into the equipment for processing.

[0003] In the prior art, Chinese patent CN222223314U discloses a feeding mechanism for injection molding of plastic lunch boxes, including a base, a hopper and a feeding pipe fixed at the upper end of the base, a discharge port on the side wall of the hopper, an inlet on the side wall near the lower end of the feeding pipe connected to the discharge port, an outlet on the side wall near the upper end of the feeding pipe, a lifting mechanism inside the feeding pipe, a feeding hopper below the outlet, an inlet on the upper end of the feeding hopper connected to the outlet, an outlet at the lower end of the feeding hopper, and a screening mechanism inside the feeding hopper.

[0004] However, the injection molding feeding mechanism provided in the above technical solution still has many shortcomings in actual use. For example, there is no material distribution mechanism at the outlet of the injection molding feeding mechanism, which makes it easy for the material to accumulate when it is poured in, and it cannot be poured into the processing equipment evenly, affecting the quality of feeding and thus resulting in poor practicality. 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 injection molding feeding mechanism lacks a material distribution mechanism at the outlet, causing material to easily accumulate and be unevenly poured into the processing equipment, thus affecting the quality of feeding and resulting in poor practicality, this utility model adopts the following technical solution.

[0007] A feeding device for injection molding of plastic lunch boxes includes a feeding hopper, a conveying pipe fixedly connected to the bottom of the feeding hopper, a distributing hopper fixedly connected to the end of the conveying pipe, a hemisphere disposed at the center of the distributing hopper, and multiple discharge holes provided at the bottom edge of the distributing hopper, the multiple discharge holes being evenly distributed in a ring about the central axis of the distributing hopper, a rotatable central shaft disposed inside the conveying pipe, and a spiral blade fixedly connected to the outer side of the central shaft.

[0008] Preferably, the central axis of the spiral blade coincides with the central axis of the central shaft, the outer side of the spiral blade is in contact with the inner wall of the conveying pipe, and the central axis of the conveying pipe coincides with the central axis of the central shaft.

[0009] Preferably, the top of the feeding hopper is threaded with a hopper cover, the central shaft passes through the hopper cover, and multiple connecting pipes are fixedly connected to the outer top of the hopper cover. The connecting pipes communicate with the inside of the feeding hopper through the hopper cover, and the multiple connecting pipes are evenly distributed in a ring about the vertical center line of the feeding hopper.

[0010] Preferably, a motor is fixedly connected to the top center of the compartment cover, and the output end of the motor is fixedly connected to the central shaft.

[0011] Preferably, a connecting frame is fixedly connected to the middle of the outer side of the conveying pipe, and an mounting frame is provided on the outer side of the connecting frame. The mounting frame and the connecting frame are rotatably connected by a threaded shaft, and locking rings are threaded to both ends of the threaded shaft.

[0012] Preferably, the outer side of the locking ring has a "plum blossom" structure, and the central axis of the locking ring coincides with the central axis of the threaded shaft. Tightening the locking ring can restrict the rotation between the mounting bracket and the connecting bracket. Threaded holes are provided at all four corners of the mounting bracket, and the threaded holes are symmetrical about the horizontal center line of the mounting bracket.

[0013] Preferably, a heating tube is fixedly connected to the outside of the conveying pipe, and the heating tube is located on the outside of the conveying pipe in a spiral pattern.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a motor to rotate the central shaft, which in turn drives the spiral blades to rotate. The rotation of the spiral blades allows the material to be conveyed into the distribution bin. The hemisphere inside the distribution bin allows the conveyed material to flow to the edge of the bin. Multiple discharge holes allow the material to flow out from the edge of the distribution bin, preventing accumulation during feeding and facilitating uniform feeding, thereby improving the quality of feeding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the heating tube of this utility model; Figure 3 This is a schematic diagram of the three-dimensional structure of the spiral blade of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the material distribution bin of this utility model; Figure 5 This is a cross-sectional view of the material conveying pipe of this utility model.

[0016] The correspondence between the labels and component names in the attached figures is as follows: 1. Feed hopper; 2. Conveying pipe; 3. Distributing hopper; 4. Hemisphere; 5. Discharge hole; 6. Central shaft; 7. Spiral blade; 8. Hopper cover; 9. Connecting pipe; 10. Motor; 11. Connecting frame; 12. Mounting frame; 13. Threaded shaft; 14. Locking ring; 15. Heating tube. Detailed Implementation

[0017] 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.

[0018] 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.

[0019] 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.

[0020] Please see Figures 1-5This utility model provides an embodiment of a plastic lunchbox injection molding feeding device, including a feeding hopper 1. A conveying pipe 2 is fixedly connected to the bottom of the feeding hopper 1. A connecting frame 11 is fixedly connected to the middle of the outer side of the conveying pipe 2. A mounting frame 12 is provided on the outer side of the connecting frame 11. The mounting frame 12 and the connecting frame 11 are rotatably connected via a threaded shaft 13. Both ends of the threaded shaft 13 are threadedly connected to locking rings 14. The outer side of the locking ring 14 has a "plum blossom" structure. The central axis of the locking ring 14 coincides with the central axis of the threaded shaft 13. Tightening the locking ring 14 can restrict the mounting frame 12 from moving away from the connecting frame 11. The connecting frame 11 can rotate. The four corners of the mounting frame 12 are provided with threaded holes. The threaded holes are symmetrical about the horizontal center line of the mounting frame 12. Through the threaded holes on the mounting frame 12, and with the use of external bolts, the mounting frame 12 can be connected to the external equipment to complete the installation of this device. The threaded shaft 13 can be used to make the connecting frame 11 rotate slightly, which is convenient for adjusting the tilt angle of the conveying pipe 2 and feeding materials in different places, thereby improving the applicability of this device. Tightening the locking ring 14 can fix the connecting frame 11 and make it easy to fix the conveying pipe 2 at a certain tilt angle.

[0021] In this embodiment, a cover 8 is threadedly connected to the top of the feeding hopper 1. A central shaft 6 passes through the cover 8. Multiple connecting pipes 9 are fixedly connected to the outer top of the cover 8. The connecting pipes 9 communicate with the inside of the feeding hopper 1 through the cover 8. The multiple connecting pipes 9 are evenly distributed in a ring about the vertical center line of the feeding hopper 1. A motor 10 is fixedly connected to the center of the top of the cover 8. The output end of the motor 10 is fixedly connected to the central shaft 6. A distribution hopper 3 is fixedly connected to the end of the conveying pipe 2. The connecting pipes 9 on the cover 8 can connect this device to external conveying equipment, facilitating the conveying of various materials into the feeding hopper 1 through the connecting pipes 9. Starting the motor 10 causes the central shaft 6 to rotate, which drives the spiral blade 7 to rotate. The rotation of the spiral blade 7 can convey materials into the distribution hopper 3. In this embodiment, a hemisphere 4 is provided at the center of the material distribution bin 3, and multiple discharge holes 5 are provided at the bottom edge of the material distribution bin 3. The multiple discharge holes 5 are evenly distributed in a ring about the central axis of the material distribution bin 3. A rotatable central shaft 6 is provided inside the conveying pipe 2, and a spiral blade 7 is fixedly connected to the outside of the central shaft 6. The central axis of the spiral blade 7 coincides with the central axis of the central shaft 6, and the outside of the spiral blade 7 is in contact with the inner wall of the conveying pipe 2. The central axis of the conveying pipe 2 coincides with the central axis of the central shaft 6. Through the hemisphere 4 inside the material distribution bin 3, the conveyed material can flow into the edge of the material distribution bin 3. The multiple discharge holes 5 can make the material flow out from the edge of the material distribution bin 3, preventing accumulation during feeding, facilitating uniform feeding of the device, thereby improving the feeding quality. In addition, the rotation of the spiral blade 7 can play a role in preventing blockage during feeding.

[0022] In this embodiment, a heating pipe 15 is fixedly connected to the outside of the conveying pipe 2. The heating pipe 15 is located on the outside of the conveying pipe 2 and is distributed in a spiral pattern. The heating pipe 15 can heat the conveying pipe 2 and prevent the material in the conveying pipe 2 from being affected by cooling.

[0023] Working principle: When using this device, firstly, the mounting bracket 12 can be connected to the external equipment through the threaded hole on the mounting bracket 12 and the use of external bolts to complete the installation of this device. Using the threaded shaft 13, the connecting bracket 11 can be rotated slightly to facilitate the adjustment of the tilt angle of the conveying pipe 2, allowing for material feeding in different locations, thereby improving the applicability of this device. Tightening the locking ring 14 can fix the connecting bracket 11, making it easy to fix the conveying pipe 2 at a certain tilt angle.

[0024] The device can be connected to external material conveying equipment via the connecting pipe 9 on the cover 8, facilitating the conveying of various materials into the feed hopper 1. Starting the motor 10 causes the central shaft 6 to rotate, driving the spiral blade 7 to rotate. The rotation of the spiral blade 7 conveys the material into the distribution hopper 3. Through the hemisphere 4 inside the distribution hopper 3, the conveyed material flows to the edge of the distribution hopper 3. Multiple discharge holes 5 allow the material to flow out from the edge of the distribution hopper 3, preventing accumulation during feeding and ensuring uniform feeding, thus improving feeding quality. The rotation of the spiral blade 7 also prevents blockage during conveying. The heating pipe 2 heats the conveying pipe 15, preventing the material inside the conveying pipe 2 from cooling and affecting feeding.

[0025] 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 plastic meal box injection molding processing feeding equipment, comprising a feeding bin (1), characterized in that: The bottom of the feeding hopper (1) is fixedly connected to a conveying pipe (2), and the end of the conveying pipe (2) is fixedly connected to a distributing hopper (3). A hemisphere (4) is set in the center of the distributing hopper (3). Multiple discharge holes (5) are opened at the bottom edge of the distributing hopper (3). The multiple discharge holes (5) are evenly distributed in a ring about the central axis of the distributing hopper (3). A rotatable central shaft (6) is set inside the conveying pipe (2), and a spiral blade (7) is fixedly connected to the outside of the central shaft (6).

2. The plastic meal box injection molding feeding equipment according to claim 1, characterized in that: The central axis of the spiral blade (7) coincides with the central axis of the central shaft (6), the outer side of the spiral blade (7) is in contact with the inner wall of the conveying pipe (2), and the central axis of the conveying pipe (2) coincides with the central axis of the central shaft (6).

3. The plastic meal box injection molding feeding equipment according to claim 2, characterized in that: The top of the feed hopper (1) is threaded with a hopper cover (8), the central shaft (6) passes through the hopper cover (8), and multiple connecting pipes (9) are fixedly connected to the outer side of the top of the hopper cover (8). The connecting pipes (9) communicate with the inside of the feed hopper (1) through the hopper cover (8), and the multiple connecting pipes (9) are evenly distributed in a ring about the vertical center line of the feed hopper (1).

4. The plastic meal box injection molding feeding equipment according to claim 3, characterized in that: A motor (10) is fixedly connected to the top center of the cover (8), and the output end of the motor (10) is fixedly connected to the central shaft (6).

5. The plastic meal box injection molding feeding equipment according to claim 4, characterized in that: A connecting frame (11) is fixedly connected to the middle of the outer side of the conveying pipe (2). An installation frame (12) is provided on the outer side of the connecting frame (11). The installation frame (12) and the connecting frame (11) are rotatably connected by a threaded shaft (13). Both ends of the threaded shaft (13) are threaded with locking rings (14).

6. The plastic meal box injection molding feeding equipment according to claim 5, characterized in that: The outer side of the locking ring (14) has a "plum blossom" structure. The central axis of the locking ring (14) coincides with the central axis of the threaded shaft (13). Tightening the locking ring (14) can restrict the rotation between the mounting bracket (12) and the connecting bracket (11). The four corners of the mounting bracket (12) are provided with threaded holes, which are symmetrical about the horizontal center line of the mounting bracket (12).

7. The plastic meal box injection molding feeding equipment according to claim 6, characterized in that: A heating tube (15) is fixedly connected to the outside of the conveying pipe (2), and the heating tube (15) is located on the outside of the conveying pipe (2) in a spiral distribution.

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