Injection molding device for plastic product production

Abstract

This utility model discloses an injection molding device for producing plastic products, relating to the field of injection molding technology. The utility model includes an injection molding machine, and further includes: a feeding section mounted on the injection molding machine; a crushing section mounted on the feeding section; the feeding section includes a screening component mounted on the injection molding machine; and a hinged component disposed on the injection molding machine; the screening component includes a feeding hopper fixedly connected to the top of the injection molding machine, the bottom of which is connected to a feeding pipe. This utility model, by setting up a feeding section, solves the problem that existing injection molding devices often fail to ensure uniformity of raw material particles entering the injection molding machine, leading to uneven heating and insufficient melting of the raw material during subsequent plasticizing, ultimately causing defects such as bubbles, shrinkage cavities, and dimensional deviations in the injection molded products, significantly reducing product molding quality.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding technology, and in particular relates to an injection molding device for the production of plastic products. Background Technology

[0002] In the plastic products manufacturing industry, injection molding equipment is the core molding equipment. Its operating efficiency and raw material processing accuracy directly determine product quality and production efficiency. With the continuous growth of demand for plastic products from industries such as automobiles, electronics, and home appliances, as well as the continuous improvement of requirements for product dimensional accuracy and appearance integrity, traditional injection molding equipment has gradually exposed many technical shortcomings and is unable to meet the needs of modern production.

[0003] However, existing injection molding equipment cannot guarantee that the raw material particles entering the injection molding machine are uniform during use. This leads to uneven heating and insufficient melting of the raw material during the subsequent plasticizing process, ultimately causing defects such as bubbles, shrinkage cavities, and dimensional deviations in the injection molded products, which significantly reduces the quality of the product molding. Utility Model Content

[0004] The purpose of this utility model is to provide an injection molding device for the production of plastic products. By setting up a feeding section, it solves the problem that existing injection molding devices are unable to ensure that the raw material particles entering the injection molding machine are uniform during use, which leads to uneven heating and insufficient melting of the raw material during the subsequent plasticizing process. This ultimately causes defects such as bubbles, shrinkage cavities, and dimensional deviations in the injection molded products, significantly reducing the quality of the molded products.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to an injection molding device for producing plastic products, comprising an injection molding machine, and further comprising: a feeding section mounted on the injection molding machine; a crushing section mounted on the feeding section; the feeding section includes a screening assembly mounted on the injection molding machine; and a hinge assembly mounted on the injection molding machine; the screening assembly includes a feeding hopper fixedly connected to the top of the injection molding machine, a feeding pipe connected to the bottom of the feeding hopper, a filter plate slidably connected to the feeding hopper, a fixed frame fixedly connected to the front side of the feeding hopper, a motor fixedly connected to the inner wall of the fixed frame, and a rotating shaft fixedly connected to the output shaft of the motor via a coupling; the end of the feeding pipe is connected to the feed inlet of the injection molding machine, and the motor is fixedly connected to the feeding hopper via the fixed frame.

[0006] Furthermore, the crushing section includes a roller assembly mounted on the screening assembly; and a transmission assembly disposed on the roller assembly; the roller assembly is linked to the screening assembly via the transmission assembly.

[0007] Furthermore, the hinge assembly includes a transmission rod fixedly connected to the outer wall of the rotating shaft. A hinge rod is hinged to the side of the transmission rod away from the rotating shaft. A hinge block is hinged to the side of the hinge rod away from the transmission rod. A connecting rod is fixedly connected to the side of the hinge block away from the hinge rod. A fixing member is provided on the fixing frame. The connecting rod is fixedly connected to the filter plate. The fixing member includes a bracket fixedly connected to the top of the fixing frame. The connecting rod passes through the bracket. The bracket is J-shaped.

[0008] Furthermore, the roller assembly includes two rotating shafts disposed inside the feeding hopper. The rotating shaft on the right side passes through the feeding hopper, and the rotating shaft on the left side extends to the outside of the feeding hopper from its rear side. Crushing rollers are fixedly connected to the outer walls of both rotating shafts, and transmission components are provided on both rotating shafts. Both rotating shafts are rotatably connected to the feeding hopper, and the transmission components include two gears fixedly connected to the outer walls of the two rotating shafts respectively. The two gears mesh with each other.

[0009] Furthermore, the transmission assembly includes two synchronous pulleys fixedly connected to the outer walls of the second and first rotating shafts located on the right side, respectively, and a synchronous belt is sleeved on the outer walls of the two synchronous pulleys; the synchronous belt meshes with the two synchronous pulleys.

[0010] This utility model has the following beneficial effects: 1. By setting up a feeding section and starting the motor on the fixed frame, the transmission rod on the rotating shaft is driven to rotate, causing the hinge rod to swing and slide left and right under the transmission action. This, in turn, links the hinge block, connecting rod, and filter plate to move left and right synchronously. The bracket plays an auxiliary role in sliding and stabilizing the connecting rod during its movement, allowing the filter plate to continuously reciprocate above the feeding hopper. At this time, the plastic raw material poured into the filter plate is dynamically screened as the filter plate moves. Smaller particles fall through the filter plate into the feeding hopper and are transported to the injection molding machine through the feeding pipe, while larger particles are conveyed by the filter plate to the roller assembly. The reciprocating motion of the filter plate efficiently separates raw materials of different particle sizes, ensuring that the raw material particles entering the injection molding machine are uniform. This reduces injection molding defects caused by differences in raw material particle size from the source and improves the product molding quality. 2. By incorporating a crushing section, when shaft one rotates, its outer synchronous wheel drives the outer synchronous wheel of shaft two to rotate synchronously via a synchronous belt, causing shaft two to rotate accordingly. When shaft two rotates, gears on its outer wall drive the two shafts to rotate relative to each other, thereby causing the crushing rollers to rotate synchronously in opposite directions. At this time, larger pieces of plastic raw material screened by the filter plate enter between the two crushing rollers and are crushed under the relative rotation of the rollers. This process uniformly breaks down large pieces of raw material, ensuring that the particle size of the crushed material remains consistent and matches the specifications of the smaller particles screened earlier, further improving the uniformity of the raw material entering the injection molding machine.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the overall structure of this utility model; Figure 3 This is a partial cross-sectional view of the gear of this utility model; Figure 4 This is a partial cross-sectional view of the hinge assembly of this utility model; Figure 5 This utility model Figure 3 A magnified structural diagram of A in the middle.

[0014] The attached diagram lists the components represented by each number as follows: 111. Injection molding machine; 2. Feeding section; 21. Screening assembly; 211. Feeding bucket; 212. Feeding pipe; 213. Filter plate; 214. Fixing frame; 215. Motor; 216. Shaft one; 22. Hinge assembly; 221. Transmission rod; 222. Hinge rod; 223. Hinge block; 224. Connecting rod; 225. Support; 3. Crushing section; 31. Roller assembly; 311. Shaft two; 312. Crushing roller; 313. Gear; 32. Transmission assembly; 321. Synchronous pulley; 322. Synchronous belt. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 As shown, this utility model is an injection molding device for producing plastic products, including an injection molding machine 111, and further including: a feeding section 2, which is installed on the injection molding machine 111; and a crushing section 3, which is installed on the feeding section 2. The feeding section 2 includes a screening assembly 21, which is mounted on the injection molding machine 111; and a hinge assembly 22, which is also mounted on the injection molding machine 111. The screening assembly 21 includes a feeding hopper 211 fixedly connected to the top of the injection molding machine 111. A feeding pipe 212 is connected to the bottom of the feeding hopper 211. A filter plate 213 is slidably connected to the feeding hopper 211. A fixing frame 214 is fixedly connected to the front side of the feeding hopper 211. A motor 215 is fixedly connected to the inner wall of the fixing frame 214. The output shaft of the motor 215 is fixedly connected to a rotating shaft 216 via a coupling. The end of the feeding pipe 212 is connected to the feed inlet of the injection molding machine 111. The motor 215 is fixedly connected to the feeding hopper 211 via the fixing frame 214. The hinge assembly 22 includes a filter plate 213 slidably connected to the rotating shaft 216. The transmission rod 221 on the outer wall of the 16 has a hinge rod 222 hinged to the side of the transmission rod 221 away from the rotating shaft 216. A hinge block 223 is hinged to the side of the hinge rod 222 away from the transmission rod 221. A connecting rod 224 is fixedly connected to the side of the hinge block 223 away from the hinge rod 222. A fixing component is provided on the fixing frame 214. The connecting rod 224 is fixedly connected to the filter plate 213. The fixing component includes a bracket 225 fixedly connected to the top of the fixing frame 214. The connecting rod 224 passes through the bracket 225. The bracket 225 is J-shaped. By setting the feeding part 2, the reciprocating motion of the filter plate efficiently separates raw materials of different particle sizes, ensuring that the raw material particles entering the injection molding machine are uniform, reducing injection molding defects caused by differences in raw material particle size from the source, and improving the product molding quality.

[0017] The crushing section 3 includes a roller assembly 31 mounted on the screening assembly 21; and a transmission assembly 32 mounted on the roller assembly 31. The roller assembly 31 is linked to the screening assembly 21 via the transmission assembly 32. The roller assembly 31 includes two rotating shafts 311 disposed inside the feeding hopper 211. The rotating shaft 311 on the right side passes through the feeding hopper 211, and the rotating shaft 311 on the left side extends to the outside of the feeding hopper 211 from its rear side. Crushing rollers 312 are fixedly connected to the outer walls of both rotating shafts 311, and transmission components are provided on the two rotating shafts 311. 1. Both are rotatably connected to the feeding hopper 211. The transmission component includes two gears 313 that are fixedly connected to the outer walls of the two rotating shafts 211 respectively. The two gears 313 mesh with each other. The transmission assembly 32 includes two synchronous pulleys 321 that are fixedly connected to the outer walls of the rotating shaft 211 and the rotating shaft 1 216 located on the right side respectively. The outer walls of the two synchronous pulleys 321 are fitted with synchronous belts 322. The synchronous belts 322 mesh with the two synchronous pulleys 321. By setting the crushing part 3, it is ensured that the particle size of the crushed raw material is consistent and matches the specifications of the small particle raw material screened in the early stage, which further improves the uniformity of the raw material entering the injection molding machine.

[0018] A specific application of this embodiment is as follows: In use, first start the motor 215 on the fixed frame 214. The motor 215 will then rotate the transmission rod 221 on the rotating shaft 216. As the transmission rod 221 rotates, it will cause the hinge rod 222 to swing significantly and slide left and right. During the movement of the hinge rod 222, the hinge block 223, connecting rod 224, and filter plate 213 will also move left and right. When the connecting rod 224 moves, the bracket 225 will assist in its sliding stability. At this time, the filter plate 213 will move back and forth on the feeding bucket 211. Plastic raw materials are then poured onto the filter plate 213. As the filter plate 213 moves, smaller particles will fall off. The material enters the feeding hopper 211 and is conveyed to the injection molding machine 111 through the feeding pipe 212. Larger pieces are conveyed to the roller assembly 31 by the filter plate 213. When the first rotating shaft 216 rotates, the synchronous wheel 321 on its outer wall will drive the synchronous wheel 321 on the outer wall of the second rotating shaft 311 to rotate through the synchronous belt 322. At this time, the second rotating shaft 311 will rotate. When the second rotating shaft 311 rotates, the gear 313 on its outer wall will drive the two rotating shafts 311 to rotate relative to each other. As the second rotating shaft 311 rotates, the crushing roller 312 will also rotate. When the two crushing rollers 312 rotate relative to each other, the larger plastic materials will be crushed, thereby ensuring that the size of the plastic materials is as consistent as possible.

[0019] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0020] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An injection molding apparatus for producing plastic products, comprising an injection molding machine (111), characterized in that, Also includes: The material feeding section (2) is installed on the injection molding machine (111); Crushing section (3), which is installed on feeding section (2); The feeding section (2) includes a screening assembly (21), which is mounted on the injection molding machine (111); and A hinge assembly (22) is mounted on the injection molding machine (111); The screening assembly (21) includes a feeding hopper (211) fixedly connected to the top of the injection molding machine (111). A feeding pipe (212) is connected to the bottom of the feeding hopper (211). A filter plate (213) is slidably connected to the feeding hopper (211). A fixing frame (214) is fixedly connected to the front side of the feeding hopper (211). A motor (215) is fixedly connected to the inner wall of the fixing frame (214). The output shaft of the motor (215) is fixedly connected to a rotating shaft (216) through a coupling. The end of the feeding pipe (212) is connected to the feed port of the injection molding machine (111), and the motor (215) is fixedly connected to the feeding barrel (211) through the fixing frame (214).

2. The injection molding device for producing plastic products according to claim 1, characterized in that, The crushing section (3) includes a roller assembly (31) mounted on the screening assembly (21); and A transmission assembly (32) is disposed on the roller assembly (31); The roller assembly (31) is linked with the screening assembly (21) through the transmission assembly (32).

3. The injection molding device for producing plastic products according to claim 2, characterized in that, The hinge assembly (22) includes a transmission rod (221) fixedly connected to the outer wall of the first rotating shaft (216). A hinge rod (222) is hinged to the side of the transmission rod (221) away from the first rotating shaft (216). A hinge block (223) is hinged to the side of the hinge rod (222) away from the transmission rod (221). A connecting rod (224) is fixedly connected to the side of the hinge block (223) away from the hinge rod (222). A fixing member is provided on the fixing frame (214). The connecting rod (224) is fixedly connected to the filter plate (213).

4. The injection molding apparatus for producing plastic products according to claim 3, characterized in that, The roller assembly (31) includes two rotating shafts (311) disposed inside the feeding hopper (211). The rotating shaft (311) on the right side passes through the feeding hopper (211), and the rotating shaft (311) on the left side extends to the outside of the feeding hopper (211) from the rear side. Crushing rollers (312) are fixedly connected to the outer walls of both rotating shafts (311), and transmission components are provided on the two rotating shafts (311). Both of the two rotating shafts (311) are rotatably connected to the feeding bucket (211).

5. The injection molding apparatus for producing plastic products according to claim 4, characterized in that, The transmission assembly (32) includes two synchronous pulleys (321) that are fixedly connected to the outer walls of the second rotating shaft (311) and the first rotating shaft (216) located on the right side, respectively, and the outer walls of the two synchronous pulleys (321) are fitted with synchronous belts (322). The synchronous belt (322) meshes with two synchronous pulleys (321).

6. The injection molding apparatus for producing plastic products according to claim 5, characterized in that, The fastener includes a bracket (225) fixedly connected to the top of the fixing frame (214), and the connecting rod (224) passes through the bracket (225). Among them, the support (225) is J-shaped.

7. The injection molding apparatus for producing plastic products according to claim 6, characterized in that, The transmission component includes two gears (313) that are respectively fixedly connected to the outer walls of the two rotating shafts (311). Two gears (313) mesh with each other.

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