Injection molding device for plastic box body

Abstract

The utility model provides an injection molding device for a plastic box body, which relates to the field of plastic injection molding and comprises a working platform, the top of the working platform is fixedly connected with a first support, and the top of the first support is fixedly connected with a heating and pushing assembly; raw materials are conveyed through the heat conduction packing auger, the heating module is combined for deep heating from inside to outside, uniform and efficient heating of the plastic raw materials is achieved, and the fluidity of the raw materials is improved. The stable conveying structure guarantees timely and stable raw material conveying, avoids blockage, improves production efficiency, solves the problem of uneven raw material heating and conveying in the prior art, uses a second motor to drive a threaded rod, and through synchronous transmission of a belt pulley and a transmission belt, a compression block and a material injection frame are matched to extrude the raw materials, so that uniform and stable extrusion is guaranteed, and the plastic raw materials are uniformly stressed; the density, strength and appearance precision of the formed plastic box are improved, the higher quality standard is achieved, and the problem that in the prior art, the extrusion forming effect is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of plastic injection molding technology, and in particular to a plastic box injection molding device. Background Technology

[0002] In the field of plastic box injection molding, traditional injection molding equipment plays a crucial role in processing plastic raw materials into boxes of specific shapes. However, as industrial production demands increasingly higher product quality and production efficiency, some existing injection molding equipment has gradually revealed numerous problems, making it difficult to meet the needs of modern production.

[0003] The existing technology has the following shortcomings:

[0004] 1) Insufficient and uneven heating of plastic raw materials leads to poor flowability of the raw materials during injection molding, affecting the quality of the molded products. In addition, the raw material transportation process lacks stability, which can easily cause blockages or untimely transportation, reducing production efficiency.

[0005] 2) The extrusion structure is not designed properly, which makes the plastic raw material unevenly stressed during the extrusion process. This results in differences in density, strength and appearance precision of the molded plastic box, making it difficult to meet high quality standards. Utility Model Content

[0006] This invention uses a first motor to drive a heat-conducting auger to rotate via gears and a gear ring, conveying plastic raw materials from the inlet to one end of the conveying shell for heating. Once the raw materials reach a suitable temperature, an electric push rod pushes a push column to deliver them to the injection frame. Finally, a second motor is started, driving a threaded rod to cause the compression block to cooperate with the injection frame to extrude and form a plastic box, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a plastic box injection molding device structure, including a working platform, a first bracket fixedly connected to the top of the working platform, and a heating and pushing assembly fixedly connected to the top of the first bracket; the heating and pushing assembly includes an electric push rod, a transmission rod fixedly connected to the output end of the electric push rod, an internal column fixedly connected to one end of the transmission rod, a set of heating modules provided on the outer wall of the heating module, and a pushing column fixedly connected to one end of the internal column.

[0008] Preferably, a second support is fixedly connected to the top of the working platform, and a conveying assembly is fixedly connected to the top of the second support; the conveying assembly includes a first motor, a gear is fixedly connected to the output end of the first motor, a gear ring meshes with the outer wall of the gear, a heat-conducting auger is fixedly connected inside the gear ring, a conveying shell is sleeved on the outer wall of the heat-conducting auger, and an inlet is connected to the outer wall of the conveying shell.

[0009] Preferably, a third support is fixedly connected to the top of the work platform, and an extrusion structure is fixedly connected to the top of the third support; the extrusion structure includes a second motor, the output end of the second motor is connected to a set of threaded rods, the outer wall of each threaded rod is fixedly connected to a pulley, the outer wall of each pulley is fitted with a transmission belt, the transmission belt is a transmission assembly of the set of threaded rods, and the bottom of the second motor is fixedly connected to the top of the work platform.

[0010] Preferably, a set of first rotating blocks is rotatably connected to the outer wall of the threaded rod, and a compression block is fixedly connected to the outer surface of the set of first rotating blocks.

[0011] Preferably, the outer wall of the threaded rod is rotatably connected to a second rotating block, and the outer surface of the second rotating block is fixedly connected to an injection frame. The two parts of the injection frame and the interior of the third bracket are rotatably connected to the second rotating block.

[0012] Preferably, one end of the conveying shell is fixedly connected to the injection frame via a flange, and the built-in column is movably inserted into the interior of the heat-conducting auger.

[0013] Preferably, one end of the push column cooperates with the injection frame, and the bottom of the injection frame is rotatably connected to the top of the third bracket.

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

[0015] 1. In this utility model, the raw material is conveyed by a heat-conducting auger and combined with a heating module for deep heating from the inside out, achieving uniform and efficient heating of the plastic raw material. This effectively improves the flowability of the raw material, and the stable conveying structure ensures the timeliness and stability of the material conveying, avoiding blockage problems and greatly improving production efficiency. It solves the problem of uneven heating and conveying of raw materials in the prior art. This device uses a second motor to drive the threaded rod, and achieves synchronous transmission through pulleys and transmission belts, so that the compression block and the injection frame cooperate to extrude the raw material. This design ensures the uniformity and stability of the extrusion action, so that the plastic raw material is subjected to uniform force during the extrusion process, thereby improving the density, strength and appearance accuracy of the molded plastic box, achieving higher quality standards, and solving the problem of poor extrusion molding effect in the prior art.

[0016] 2. In this utility model, the structural design is more reasonable, and the connection method and layout of each component make the internal parts easy to access and operate. Key components such as the conveying shell and the injection frame are easy to disassemble and install, which facilitates daily maintenance and cleaning, effectively reduces maintenance and time costs, ensures the continuity of production, and solves the problem of difficult maintenance and cleaning of existing devices. Attached Figure Description

[0017] Figure 1 This is a perspective view of the main structure of a plastic box injection molding device proposed in this utility model;

[0018] Figure 2 This is a front view perspective view of a plastic box injection molding device proposed in this utility model;

[0019] Figure 3 This is a perspective view of the heating structure of a plastic box injection molding device proposed in this utility model;

[0020] Figure 4 This is a perspective view of the conveying structure of a plastic box injection molding device proposed in this utility model;

[0021] Figure 5 This is a perspective view of the compression structure of a plastic box injection molding device proposed in this utility model;

[0022] Figure 6 This is a perspective view of the compression structure of a plastic box injection molding device proposed in this utility model.

[0023] Legend: 1. Working platform; 11. First support; 12. Second support; 13. Third support; 2. Heating and pushing assembly; 201. Electric push rod; 202. Transmission rod; 203. Built-in column; 204. Heating module; 205. Push column; 3. Conveying assembly; 301. First motor; 302. Gear; 303. Gear ring; 304. Heat-conducting auger; 305. Conveying shell; 306. Feed port; 4. Extrusion structure; 401. Second motor; 402. Threaded rod; 403. Pulley; 404. First rotating block; 405. Compression block; 407. Injection frame; 409. Second rotating block, transmission belt. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] 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. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Please see attached Figure 1 -Appendix Figure 6 As shown, Figure 1As shown, the plastic box injection molding device structure of this embodiment includes a working platform 1, a first support 11 fixedly connected to the top of the working platform 1, and a heating push assembly 2 fixedly connected to the top of the first support 11. The heating push assembly 2 includes an electric push rod 201, a transmission rod 202 fixedly connected to the output end of the electric push rod 201, an internal column 203 fixedly connected to one end of the transmission rod 202, a set of heating modules 204 provided on the outer wall of the internal column 203, and a push column 205 fixedly connected to one end of the internal column 203. Using the electric push rod 201 as a power source has the advantages of precise control and fast response speed, and can accurately push the transmission rod 202 and the subsequent internal column 203 and push column 205 to move. The heating module 204 can efficiently heat the plastic raw material, so that it can quickly reach the appropriate injection temperature, thereby improving production efficiency and product quality.

[0027] Please see attached Figure 1 -Appendix Figure 6 As shown, a second support 12 is fixedly connected to the top of the working platform 1, and a conveying assembly 3 is fixedly connected to the top of the second support 12. The conveying assembly 3 includes a first motor 301, a gear 302 is fixedly connected to the output end of the first motor 301, a gear ring 303 meshes with the outer wall of the gear 302, a heat-conducting auger 304 is fixedly connected inside the gear ring 303, a conveying shell 305 is sleeved on the outer wall of the heat-conducting auger 304, and a feed inlet 306 is connected to the outer wall of the conveying shell 305. The second support 12 provides stable support for the conveying assembly 3, ensuring that the conveying assembly 3 remains stable during operation, reducing problems such as poor material conveying caused by vibration or shaking, and ensuring the continuity and stability of the entire injection molding process. The transmission method of the first motor 301 driving the gear 302 and the gear ring 303 can achieve stable power transmission, making the heat-conducting auger 304 rotate at a uniform speed. The heat-conducting auger 304 can heat the raw material while conveying it, improving the fluidity of the raw material, which is beneficial to subsequent injection molding. The design of the feed inlet 306 facilitates the addition of raw materials and ensures timely supply.

[0028] Please see attached Figure 1 -Appendix Figure 6As shown, a third support 13 is fixedly connected to the top of the work platform 1, and an extrusion structure 4 is fixedly connected to the top of the third support 13. The extrusion structure 4 includes a second motor 401, the output end of which is connected to a set of threaded rods 402. Each threaded rod 402 has a pulley 403 fixedly connected to its outer wall, and each pulley 403 has a transmission belt 410 fitted on its outer wall. The transmission belt 410 is a transmission component for the set of threaded rods 402. The bottom of the second motor 401 is fixedly connected to the top of the work platform 1. The third support 13 provides a solid support foundation for the extrusion structure 4, enabling the extrusion structure 4 to withstand greater pressure without deformation during operation, ensuring the stability and reliability of the extrusion process, and helping to improve the molding quality of the plastic box.

[0029] Please see attached Figure 1 -Appendix Figure 6 As shown, a set of first rotating blocks 404 are rotatably connected to the outer wall of the threaded rod 402. A compression block 405 is fixedly connected to the outer surface of the set of first rotating blocks 404. The set of threaded rods 402 are driven to rotate by a second motor 401. Synchronous transmission is achieved through a pulley 403 and a transmission belt 410. This transmission method can ensure the consistency of rotation of each threaded rod 402, thereby making the extrusion action more uniform and stable, which is conducive to uniformly extruding and molding plastic raw materials.

[0030] Please see attached Figure 1 -Appendix Figure 6 As shown, a second rotating block 409 is rotatably connected to the outer wall of the threaded rod 402. Two of the injection frames 407 are rotatably connected to the interior of the third bracket 13. The second rotating block 409 allows the injection frames 407 to rotate under the drive of the threaded rod 402. The rotatable connection between the injection frames 407 and the third bracket 13 further enhances their rotational flexibility. This rotational design allows the injection frames 407 to better cooperate with the extrusion action of the compression block 405, making the raw material more evenly distributed within the injection frames 407, which helps to improve the molding quality and appearance precision of the plastic box.

[0031] Please see attached Figure 1 -Appendix Figure 6 As shown, one end of the inlet 306 is fixedly connected to the filling frame 407 via a flange. The built-in column 203 is movably inserted into the interior of the heat-conducting auger 304. The conveying housing 305 is fixedly connected to the filling frame 407 via a flange, ensuring the sealing and stability of the connection, preventing leakage of raw materials during conveying, and ensuring that the raw materials can smoothly enter the filling frame 407 from the inlet 306. The built-in column 203 is movably inserted into the interior of the heat-conducting auger 304, which facilitates the heating module 204 to heat the raw materials in the heat-conducting auger 304. At the same time, the pushing column 205 can accurately push the heated raw materials into the filling frame 407, improving the efficiency of raw material processing and conveying.

[0032] Please see attached Figure 1 -Appendix Figure 6 As shown, one end of the push column 205 cooperates with the injection frame 407, and the bottom of the injection frame 407 is rotatably connected to the top of the third support 13. The cooperation between the push column 205 and the injection frame 407 can accurately push the heated raw material into the injection frame 407, avoiding waste and residue of raw material. The rotatable connection between the bottom of the injection frame 407 and the top of the third support 13 allows the injection frame 407 to rotate flexibly when compressed, working in conjunction with the compression block 405 to better complete the molding process of the plastic box, improving the molding effect and quality stability of the product.

[0033] Working Principle: During raw material feeding and initial conveying, the operator starts the first motor 301, whose output drives the connected gear 302 to rotate. Since gear 302 and gear ring 303 are meshed, the rotation of gear 302 causes gear ring 303 to rotate synchronously. A heat-conducting auger 304 is fixedly connected inside the auger conveying and preheating gear ring 303. When gear ring 303 rotates, it drives heat-conducting auger 304 to rotate within the conveying housing 305. After the plastic raw material enters the conveying housing 305 through the inlet 306, the rotating heat-conducting auger 304 uses its spiral structure to convey the raw material towards one end of the conveying housing 305. During this process, heat-conducting auger 304 uses its thermal conductivity to initially heat the raw material, improving its performance. As the conveying process continues, the raw material gradually accumulates at one end of the conveyor housing 305. Simultaneously with the material conveying, the heating module deeply heats the material. At the same time, the electric push rod 201 is activated, and its output pushes the transmission rod 202. The transmission rod 202 drives the component 203 towards the interior of the heat-conducting auger 304 until the entire component 203 is inside. The outer wall of the component 203 is equipped with the heating module 204. Once the component 203 enters the heat-conducting auger 304, the heating module 204 begins operation, deeply heating the accumulated raw material to quickly reach a suitable injection molding temperature. After the raw material is heated to a suitable temperature, considering the poor fluidity of the plastic liquid and the accumulation... The material accumulates at one end of the conveying housing 305. The electric push rod 201 continues to push the transmission rod 202, causing the push column 205, which is fixedly connected to the component 203, to move forward. The push column 205 pushes the heated raw material from one end of the conveying housing 305 into the filling frame 407. Since the inlet 306 is fixedly connected to the filling frame 407 through a flange, the smooth conveying of the raw material is ensured. The second motor 401 is started, and its output end drives a set of threaded rods 402 to rotate. Each threaded rod 402 has a pulley 403 fixedly connected to its outer wall. The pulley 403 is driven by the transmission belt 410 to ensure that a set of threaded rods 402 can rotate synchronously. The compression block extrudes and cooperates with the filling frame to form the material. The threaded rods 402 rotate. At the same time, the first rotating block 404, which is rotatably connected to the outer wall of the threaded rod 402, will move linearly along the threaded rod 402. Since the compression block 405 is fixedly connected to the outer surface of the first rotating block 404, the compression block 405 will move with the movement of the first rotating block 404, squeezing the raw material in the injection frame 407. At the same time, the second rotating block 409, which is rotatably connected to the outer wall of the threaded rod 402, will also move along the threaded rod 402. The injection frame 407, which is fixedly connected to the outer surface of the second rotating block 409, will rotate inside the third bracket 13. The rotation of the injection frame 407 and the squeezing action of the compression block 405 cooperate with each other to uniformly squeeze the raw material into a plastic box, and finally complete the entire injection molding process.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A plastic box injection molding device, characterized in that: Includes a work platform (1), the top of which is fixedly connected to a first support (11), and the top of the first support (11) is fixedly connected to a heating push assembly (2). The heating push assembly (2) includes an electric push rod (201), the output end of which is fixedly connected to a transmission rod (202), one end of which is fixedly connected to a built-in column (203), a set of heating modules (204) is provided on the outer wall of the built-in column (203), and one end of the built-in column (203) is fixedly connected to a push column (205).

2. The plastic box injection molding device according to claim 1, characterized in that: The top of the work platform (1) is fixedly connected to a second support (12), and the top of the second support (12) is fixedly connected to a conveying assembly (3). The conveying assembly (3) includes a first motor (301), the output end of the first motor (301) is fixedly connected to a gear (302), the outer wall of the gear (302) is meshed with a gear ring (303), the inside of the gear ring (303) is fixedly connected to a heat-conducting auger (304), the outer wall of the heat-conducting auger (304) is fitted with a conveying shell (305), and the outer wall of the conveying shell (305) is connected to an inlet (306).

3. The plastic box injection molding device according to claim 2, characterized in that: The top of the work platform (1) is fixedly connected to a third support (13), and the top of the third support (13) is fixedly connected to an extrusion structure (4). The extrusion structure (4) includes a second motor (401), the output end of which is connected to a set of threaded rods (402). The outer walls of the threaded rods (402) are all fixedly connected to pulleys (403), and the outer walls of the pulleys (403) are all fitted with transmission belts (410). The transmission belts (410) are transmission components of the set of threaded rods (402). The bottom of the second motor (401) is fixedly connected to the top of the working platform (1).

4. The plastic box injection molding device according to claim 3, characterized in that: The outer wall of the threaded rod (402) is rotatably connected to a set of first rotating blocks (404), and a compression block (405) is fixedly connected to the outer surface of the set of first rotating blocks (404).

5. The plastic box injection molding device according to claim 3, characterized in that: The outer wall of the threaded rod (402) is rotatably connected to a second rotating block (409), and the outer surface of the second rotating block (409) is fixedly connected to an injection frame (407). Two of the injection frames (407) are rotatably connected to the interior of the third bracket (13).

6. The plastic box injection molding apparatus according to claim 5, characterized in that: One end of the conveying housing (305) is fixedly connected to the injection frame (407) via a flange, and the built-in column (203) is movably inserted into the interior of the heat-conducting auger (304).

7. The plastic box injection molding device according to claim 1, characterized in that: One end of the push column (205) cooperates with the injection frame (407), and the bottom of the injection frame (407) is rotatably connected to the top of the third bracket (13).

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