Injection molding device for plastic meal box processing

Abstract

The utility model relates to the technical field of plastic meal box processing, and discloses an injection molding device for plastic meal box processing, which comprises a working table, an injection molding machine is fixedly mounted at the top of the working table, a supporting pipe is fixedly mounted at the top of the injection molding machine, and a mounting plate is movably mounted in the supporting pipe. And a stock bin is fixedly mounted at the top of the mounting plate. Compared with a traditional device, through cooperation of the positioning block, the spring and the pull rod, the stock bin can be conveniently installed at the bottom of the supporting pipe, and the production efficiency can be remarkably improved through the design of facilitating installation of the stock bin; in the injection molding production process, the stock bin serves as a key component for storing and conveying raw materials, and the downtime and the production rhythm of equipment are directly influenced by the convenience of mounting and dismounting of the stock bin; the design of the stock bin is convenient to install, operators can quickly complete the disassembly and installation processes, the downtime of equipment is shortened, and therefore the production rhythm is accelerated, and the overall production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic lunch box processing technology, and more specifically, to an injection molding device for processing plastic lunch boxes. Background Technology

[0002] Plastic lunch boxes are food-grade plastic containers made from raw materials, designed for convenient food delivery. They are common household plastic products and indispensable for picnics and hikes. Manufactured using injection molding machines, the raw materials are molded into various shapes. However, existing plastic lunch box injection molding machines have significant design flaws in the feeding and hopper installation processes. During feeding, operators pour plastic granules or powder into the hopper. Traditional hoppers, when overfilled, easily accumulate material at the feed inlet due to gravity, causing blockages in the discharge channel. This blockage not only interrupts production but also requires manual intervention, severely impacting processing efficiency. Furthermore, the hopper's connection to the main body uses a multi-bolt fixing structure, requiring individual bolt removal for maintenance—a cumbersome and time-consuming process. This flaw further reduces maintainability, especially in production scenarios requiring frequent maintenance. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an injection molding device for processing plastic lunch boxes, which has the advantage of convenient material hopper installation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an injection molding device for processing plastic lunch boxes, comprising a workbench, an injection molding machine fixedly mounted on the top of the workbench, a support tube fixedly mounted on the top of the injection molding machine, an installation plate movably mounted inside the support tube, a material hopper fixedly mounted on the top of the installation plate, a fixed frame fixedly mounted inside the material hopper, a rotating shaft movably mounted inside the fixed frame, a first bevel gear fixedly mounted on the top of the rotating shaft, a fixed rod movably mounted inside the fixed frame, a second bevel gear fixedly mounted on one end of the fixed rod, with the first bevel gear and the second bevel gear meshing, a rotating handle fixedly mounted on the other end of the fixed rod, and a stirring rod fixedly mounted on the outer surface of the rotating shaft;

[0005] A housing is fixedly installed at the bottom of the support tube. A positioning block is movably installed inside the mounting plate. A pull rod is fixedly installed at the bottom of the positioning block, and one end of the pull rod passes through the inside of the housing. A spring is fixedly installed between the positioning block and the housing. A push rod is fixedly installed on the front of the mounting plate.

[0006] As a preferred embodiment of this utility model, a rotating rod is movably installed inside the injection molding machine, and one end of the rotating rod passes through the inside of the injection molding machine. A first gear is fixedly installed at one end of the rotating rod. A motor is fixedly installed on the right side of the injection molding machine. A second gear is fixedly installed at the output end of the motor, and the second gear meshes with the first gear. A auger is fixedly installed on the outer surface of the rotating rod. A lunch box mold is fixedly installed on the left side of the injection molding machine.

[0007] As a preferred embodiment of this utility model, a support plate is fixedly installed at the bottom of the workbench, and a fixing plate is fixedly installed between the two support plates.

[0008] As a preferred embodiment of this utility model, a reinforcing rib is fixedly installed at the angle between the support plate and the fixing plate, and the reinforcing rib is triangular in shape.

[0009] As a preferred embodiment of this utility model, a fixing seat is fixedly installed on the outer side of the support plate, a fixing block is movably installed inside the fixing seat, and a toolbox is fixedly installed on the back of the fixing block.

[0010] As a preferred embodiment of this utility model, a support base is fixedly installed on the right side of the injection molding machine, and the interior of the support base has a U-shaped form.

[0011] As a preferred embodiment of this utility model, the inner diameter of the fixing seat is equal to the outer diameter of the fixing block, and the interior of the fixing seat has a smooth surface design.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. Compared with traditional devices, this utility model, through the cooperation of positioning blocks, springs, and pull rods, facilitates the installation of the hopper at the bottom of the support tube. This convenient hopper installation design significantly improves production efficiency. In injection molding, the hopper, as a key component for storing and transporting raw materials, directly affects equipment downtime and production rhythm due to the ease of its installation and disassembly. The hopper design facilitates installation, allowing operators to quickly complete the disassembly and installation process, reducing equipment downtime, thereby accelerating production and improving overall efficiency. Furthermore, the cooperation between the rotating shaft and the stirring rod facilitates the unblocking of raw materials in the hopper, particularly at the bottom of the worktable in the injection molding device for lunchbox processing, significantly improving production efficiency. Blockage at the bottom of the hopper can lead to interruptions in raw material supply, forcing the production line to stop for cleaning. The convenient cooperation of the rotating shaft and stirring rod allows for rapid resumption of production, reducing downtime and ensuring the continuity of the production process. Secondly, it helps ensure product quality. Blockage can lead to unstable raw material supply, resulting in material shortages and air bubble defects. Timely unblocking maintains a uniform supply of raw materials, improving the dimensional accuracy and surface quality of the lunchboxes. In addition, this design can reduce equipment maintenance costs.

[0014] 2. Compared with traditional devices, this invention uses the cooperation between the first and second gears to slowly rotate the auger inside the injection molding machine. This low-speed rotation achieves precise plasticization control: the raw material is gradually pushed into the injection molding machine, extending the heating time to complete a smooth transition from solid to molten state, avoiding uneven plasticization caused by local overheating, ensuring that the melt fully fills the mold cavity, and significantly reducing defects such as short shots and flow marks. At the same time, the slow extrusion maintains the uniformity of the temperature field within the worktable, preventing temperature fluctuations caused by material flow and protecting the stability of the plastic molecular chain structure. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional appearance structural diagram of the present utility model;

[0016] Figure 2 This is a side perspective view of the present invention.

[0017] Figure 3 This is a schematic diagram of the injection molding cross-sectional structure of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the silo of this utility model;

[0020] Figure 6 This is a top-view three-dimensional structural diagram of the silo of this utility model;

[0021] Figure 7 This utility model Figure 6 Enlarged structural diagram at point B;

[0022] Figure 8 This is a partial cross-sectional view of the support tube structure of this utility model.

[0023] Figure 9 This utility model Figure 8 Enlarged structural diagram at point C.

[0024] In the diagram: 1. Workbench; 2. Injection molding machine; 3. Lunch box mold; 4. Material hopper; 5. Motor; 6. Support base; 7. Support plate; 8. Fixing plate; 9. Reinforcing rib; 10. Support tube; 11. First gear; 12. Second gear; 13. Rotating rod; 14. Fixing base; 15. Fixing block; 16. Toolbox; 17. Screwdriver; 18. Mounting plate; 19. Fixing frame; 20. Rotating shaft; 21. Stirring rod; 22. First bevel gear; 23. Second bevel gear; 24. Fixing rod; 25. Rotating handle; 26. Push rod; 27. Positioning block; 28. Pull rod; 29. ​​Spring; 30. Box body. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 9 As shown, this utility model provides an injection molding device for processing plastic lunch boxes, including a workbench 1, an injection molding machine 2 fixedly installed on the top of the workbench 1, a support tube 10 fixedly installed on the top of the injection molding machine 2, an installation plate 18 movably installed inside the support tube 10, a material hopper 4 fixedly installed on the top of the installation plate 18, a fixing frame 19 fixedly installed inside the material hopper 4, a rotating shaft 20 movably installed inside the fixing frame 19, a first bevel gear 22 fixedly installed on the top of the rotating shaft 20, a fixing rod 24 movably installed inside the fixing frame 19, a second bevel gear 23 fixedly installed at one end of the fixing rod 24, and the first bevel gear 22 and the second bevel gear 23 mesh with each other, a rotating handle 25 fixedly installed at the other end of the fixing rod 24, and a stirring rod 21 fixedly installed on the outer surface of the rotating shaft 20;

[0027] A housing 30 is fixedly installed at the bottom of the support tube 10. A positioning block 27 is movably installed inside the mounting plate 18. A pull rod 28 is fixedly installed at the bottom of the positioning block 27, and one end of the pull rod 28 passes through the inside of the housing 30. A spring 29 is fixedly installed between the positioning block 27 and the housing 30. A push rod 26 is fixedly installed on the front of the mounting plate 18.

[0028] When using the hopper 4, the operator needs to install the hopper 4 inside the support tube 10. By holding the pull rod 28, the operator pulls the positioning block 27 against the spring 29 inside the box 30, causing the positioning block 27 to pass through the support tube 10 and enter the box 30. Then, by holding the push rod 26, the operator slowly pushes the mounting plate 18 into the support tube 10, causing the hopper 4 to move synchronously. When the mounting plate 18 is fully inside the hopper 4, the operator releases the pull rod 28, and the spring 29 presses the positioning block 27 inside the box 30, causing the positioning block 27 to pass through the support tube 10 and enter the mounting plate 18. The positioning block 27 limits the mounting plate 18, completing the installation of the mounting plate 18 and the hopper 4 on the support tube 10.

[0029] When the material is pushed to the bottom of the hopper 4 and causes the support pipe 10 to become blocked, the handle 25 is now rotated. The handle 25 rotates the fixed rod 24, which in turn rotates the second bevel gear 23. The second bevel gear 23 meshes with the first bevel gear 22, which in turn rotates the first bevel gear 22. The first bevel gear 22 then rotates the rotating shaft 20 inside the fixed frame 19. The rotating shaft 20 rotates the raw material at the bottom of the hopper 4 via the stirring rod 21, thus clearing the bottom of the hopper 4.

[0030] When using an injection molding machine to process plastic lunch boxes, the equipment assembly and operation must be completed according to specifications. First, install the hopper 4 into the support tube 10. The operator holds the pull rod 28 and pulls the positioning block 27 to move directionally within the box 30, so that the end of the positioning block 27 passes through the support tube 10 and the box 30 in sequence to form a connection. Then, the operator holds the push handle 26 and slowly pushes the mounting plate 18 into the hopper support tube 10. This process drives the synchronous displacement of the hopper 4 through the mounting plate 18. After the mounting plate 18 is fully embedded in the component hopper 4, release the operating lever 28. The spring component 29 quickly enters the interior of the mounting plate 18 within the guide sleeve box 30 using the spring component 29. The mounting plate 18 is limited and fixed by the positioning block 27.

[0031] When material is pushed to the bottom of the hopper 4, causing blockage of the support tube 10, the handle 25 is now rotated. Rotating the handle 25 rotates the fixed rod 24, which in turn rotates the second bevel gear 23. The second bevel gear 23 meshes with the first bevel gear 22, causing the first bevel gear 22 to rotate. The first bevel gear 22 then rotates the rotating shaft 20 inside the fixed frame 19. The rotating shaft 20, along with the stirring rod 21, rotates the raw material at the bottom of the hopper 4. Compared to traditional devices, this device, through the cooperation of the positioning block 27, spring 29, and pull rod 28, facilitates the installation of the hopper 4 at the bottom of the support tube 10. This convenient installation design significantly improves production efficiency. In the injection molding process, the hopper 4, as a key component for storing and transporting raw materials, is crucial for its safety. The ease of installation and disassembly directly impacts equipment downtime and production rhythm. The design of hopper 4 facilitates installation, allowing operators to quickly complete the disassembly and installation process, reducing equipment downtime, thereby accelerating production and improving overall efficiency. The cooperation between the rotating shaft 20 and the stirring rod 21 facilitates the unblocking of raw materials in hopper 4, and in the injection molding device for lunchbox processing, it facilitates the unblocking of raw materials at the bottom of the workbench 1, significantly improving production efficiency. Blockage at the bottom of the hopper can lead to interruptions in raw material supply, forcing the production line to stop for cleaning. The convenient cooperation between the rotating shaft 20 and the stirring rod 21 allows for rapid resumption of production, reducing downtime and ensuring the continuity of the production process. Secondly, it helps ensure product quality. Blockage can lead to unstable raw material supply, resulting in material shortages and air bubble defects. Timely unblocking maintains a uniform supply of raw materials, improving the dimensional accuracy and surface quality of the lunchboxes. Furthermore, this design reduces equipment maintenance costs.

[0032] The injection molding machine 2 has a rotating rod 13 installed inside, with one end of the rotating rod 13 penetrating through the interior of the injection molding machine 2. A first gear 11 is fixedly installed at one end of the rotating rod 13. A motor 5 is fixedly installed on the right side of the injection molding machine 2. A second gear 12 is fixedly installed at the output end of the motor 5, and the second gear 12 meshes with the first gear 11. A auger 17 is fixedly installed on the outer surface of the rotating rod 13. A lunch box mold 3 is fixedly installed on the left side of the injection molding machine 2.

[0033] The staff pours the raw materials into the injection molding machine 2 through the hopper 4 and support tube 10, then turns on the motor 5 and the injection molding machine 2. The injection molding machine 2 heats the raw materials inside. The motor 5 drives the second gear 12 to rotate. Through the meshing of the teeth between the second gear 12 and the first gear 11, the second gear 12 drives the first gear 11 to rotate. The first gear 11 drives the rotating rod 13 to rotate inside the injection molding machine 2. Then, the rotating rod 13 drives the auger 17 inside the injection molding machine 2. The auger 17 heats the heated raw materials and slowly squeezes them into the lunch box mold 3.

[0034] Raw materials are injected into the injection molding machine 2 through the hopper 4 and support pipe 10. The motor 5 and injection molding machine 2 are started, and the injection molding machine 2 heats and melts the raw materials inside. The motor 5 drives the second gear 12 to rotate. Through gear meshing, the second gear 12 drives the first gear 11 to rotate synchronously, which in turn drives the rotating rod 13 to rotate inside the injection molding machine 2. Then, the rotating auger 17 mixes the molten raw materials and generates a pushing force, uniformly and slowly extruding the molten plastic into the cavity of the lunch box mold 3 to complete the injection molding. Compared with traditional devices, this device... Through the cooperation between the first gear 11 and the second gear 12, the auger 17 is slowly driven to rotate inside the injection molding machine 2. Precise plasticization control is achieved through low-speed rotation: the raw material is gradually pushed into the injection molding machine 2, extending the heating time to complete a smooth transition from solid to molten state, avoiding uneven plasticization caused by local overheating, ensuring that the melt fully fills the mold cavity, and significantly reducing defects such as short shots and flow marks; at the same time, slow extrusion maintains the uniformity of the temperature field in the worktable 1, prevents temperature fluctuations caused by material crossflow, and protects the stability of the plastic molecular chain structure.

[0035] Among them, a support plate 7 is fixedly installed at the bottom of the workbench 1, and a fixing plate 8 is fixedly installed between the two support plates 7.

[0036] Because a fixing plate 8 is fixedly installed between the two support plates 7, the cooperation between the support plates 7 and the fixing plate 8 provides stable support for the workbench 1 and the injection molding machine 2, ensuring the stability of the workbench 1 and the injection molding machine 2 during use and improving the processing efficiency of the injection molding machine 2 for plastic lunch boxes.

[0037] Among them, a reinforcing rib 9 is fixedly installed at the angle between the support plate 7 and the fixing plate 8, and the reinforcing rib 9 is triangular in shape.

[0038] Since the reinforcing rib 9 is triangular in shape at the angle between the support plate 7 and the fixed plate 8, and triangles have the characteristic of stability, this reduces the shaking of the support plate 7 and the fixed plate 8 during use, and improves the stability of the support plate 7 and the fixed plate 8 during use.

[0039] Among them, a fixing seat 14 is fixedly installed on the outer side of the support plate 7, a fixing block 15 is movably installed inside the fixing seat 14, and a toolbox 16 is fixedly installed on the back of the fixing block 15.

[0040] By holding the toolbox 16, the fixing block 15 is slowly inserted into the fixing seat 14. The fixing seat 14 limits and fixes the fixing block 15. By adding the toolbox 16, it is convenient for staff to take out and place maintenance tools inside the toolbox 16, and it is convenient to adjust and maintain the centrifuge device in a timely manner.

[0041] The injection molding machine 2 has a support base 6 fixedly installed on its right side, and the inside of the support base 6 has a U-shaped form.

[0042] Because the support base 6 is U-shaped and fixed on the left side of the injection molding machine 2, it provides stable support for the motor 5, ensuring the stability of the motor 5 during use and extending the service life of the motor 5.

[0043] The inner diameter of the fixing seat 14 is equal to the outer diameter of the fixing block 15, and the interior of the fixing seat 14 has a smooth surface design.

[0044] Since the inner diameter of the fixing base 14 is equal to the outer diameter of the fixing block 15, and the interior of the fixing base 14 has a smooth surface design, it is convenient for the staff to hold the toolbox 16 and slowly insert the fixing block 15 into the interior of the fixing base 14, thus ensuring the installation efficiency of the toolbox 16.

[0045] Working principle and usage process of this utility model:

[0046] When using the hopper 4, the operator needs to install the hopper 4 inside the support tube 10. By holding the pull rod 28, the operator pulls the positioning block 27 against the spring 29 inside the box 30, causing the positioning block 27 to pass through the support tube 10 and enter the box 30. Then, by holding the push rod 26, the operator slowly pushes the mounting plate 18 into the support tube 10, causing the hopper 4 to move synchronously. When the mounting plate 18 is fully inside the hopper 4, the operator releases the pull rod 28, and the spring 29 presses the positioning block 27 inside the box 30, causing the positioning block 27 to pass through the support tube 10 and enter the mounting plate 18. The positioning block 27 limits the mounting plate 18, completing the installation of the mounting plate 18 and the hopper 4 on the support tube 10.

[0047] When the material is pushed to the bottom of the hopper 4 and causes the support pipe 10 to become blocked, the handle 25 is now rotated. The handle 25 rotates the fixed rod 24, which in turn rotates the second bevel gear 23. The second bevel gear 23 meshes with the first bevel gear 22, which in turn rotates the first bevel gear 22. The first bevel gear 22 then rotates the rotating shaft 20 inside the fixed frame 19. The rotating shaft 20 rotates the raw material at the bottom of the hopper 4 via the stirring rod 21, thus clearing the bottom of the hopper 4.

[0048] The staff pours the raw materials into the injection molding machine 2 through the hopper 4 and support tube 10, then turns on the motor 5 and the injection molding machine 2. The injection molding machine 2 heats the raw materials inside. The motor 5 drives the second gear 12 to rotate. Through the meshing of the teeth between the second gear 12 and the first gear 11, the second gear 12 drives the first gear 11 to rotate. The first gear 11 drives the rotating rod 13 to rotate inside the injection molding machine 2. Then, the rotating rod 13 drives the auger 17 inside the injection molding machine 2. The auger 17 heats the heated raw materials and slowly squeezes them into the lunch box mold 3.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] 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 plastic meal box processing injection molding device comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly installed with an injection molding machine (2), the top of the injection molding machine (2) is fixedly installed with a support pipe (10), the inside of the support pipe (10) is movably installed with a mounting plate (18), the top of the mounting plate (18) is fixedly installed with a hopper (4), the inside of the hopper (4) is fixedly installed with a fixing frame (19), the inside of the fixing frame (19) is movably installed with a rotating shaft (20), the top of the rotating shaft (20) is fixedly installed with a first bevel gear (22), the inside of the fixing frame (19) is movably installed with a fixed rod (24), one end of the fixed rod (24) is fixedly installed with a second bevel gear (23), and the teeth of the first bevel gear (22) and the second bevel gear (23) are engaged, the other end of the fixed rod (24) is fixedly installed with a rotating handle (25), and the outer surface of the rotating shaft (20) is fixedly installed with a stirring rod (21). The bottom of the support pipe (10) is fixedly installed with a box body (30), the inside of the mounting plate (18) is movably installed with a positioning block (27), the bottom of the positioning block (27) is fixedly installed with a pull rod (28), one end of the pull rod (28) penetrates the inside of the box body (30), the positioning block (27) and the box body (30) are fixedly installed with a spring (29), and the front of the mounting plate (18) is fixedly installed with a push rod (26).

2. The injection molding device for processing plastic meal boxes according to claim 1, characterized in that: The inside of the injection molding machine (2) is movably installed with a rotating rod (13), one end of the rotating rod (13) penetrates the inside of the injection molding machine (2), one end of the rotating rod (13) is fixedly installed with a first gear (11), the right side of the injection molding machine (2) is fixedly installed with a motor (5), the output end of the motor (5) is fixedly installed with a second gear (12), the teeth of the second gear (12) and the first gear (11) are engaged, the outer surface of the rotating rod (13) is fixedly installed with a dragon (17), and the left side of the injection molding machine (2) is fixedly installed with a meal box mold (3).

3. The injection molding device for processing plastic meal boxes according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly installed with a support plate (7), and two support plates (7) are fixedly installed with a fixed plate (8).

4. The injection molding device for processing plastic meal boxes according to claim 3, characterized in that: The angle between the support plate (7) and the fixed plate (8) is fixedly installed with a reinforcing rib (9), and the reinforcing rib (9) is triangular in shape.

5. The injection molding device for processing plastic meal boxes according to claim 3, characterized in that: The outer side of the support plate (7) is fixedly installed with a fixed seat (14), the inside of the fixed seat (14) is movably installed with a fixed block (15), and the back of the fixed block (15) is fixedly installed with a tool box (16).

6. The injection molding device for processing plastic meal boxes according to claim 1, characterized in that: The right side of the injection molding machine (2) is fixedly installed with a support seat (6), and the inside of the support seat (6) is U-shaped in shape.

7. The injection molding device for processing plastic meal boxes according to claim 5, characterized in that: The inner diameter of the fixed seat (14) is equal to the outer diameter of the fixed block (15), and the inside of the fixed seat (14) has a smooth design.

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