A plastic product injection molding machine

Abstract

The utility model discloses a kind of plastic product injection molding machines, relate to the processing technical field of plastics.A kind of plastic product injection molding machine, including injection molding material conveying structure and feed tank, feed tank is fixedly installed on the feed end of injection molding material conveying structure, the inside of feed tank is provided with plastic crushing structure, plastic screening structure, plastic screening structure is located on feed tank, plastic screening structure includes two conveying rollers, conveying screen, rotating motor, conveying cylinder, discharge hopper and feed pipe, two conveying rollers are rotatably connected in the inside of feed tank, by the screening structure that conveying screen and guide frame are formed, can dynamically transport raw material, unqualified raw material is transported to discharge hopper in time, avoid raw material accumulation to hinder screening process, and screened qualified raw material can directly enter injection molding material conveying structure, entire process is smooth and efficient, need not to interrupt production due to cleaning filter screen, greatly improve the coherence and overall efficiency of plastic product production, meet efficient production demand.

Description

Technical Field

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

[0002] Polyethylene foam, also known as EPE pearl cotton, is a non-crosslinked closed-cell structure and a new type of environmentally friendly packaging material. It is composed of countless independent air bubbles generated through the physical foaming of low-density polyethylene resin. It overcomes the shortcomings of ordinary foam, such as fragility, deformation, and poor resilience. Chinese utility model patent, authorization announcement number "CN220784672U," discloses a plastic product injection molding machine. In operation, the plastic granules to be processed are conveyed into the feeding hopper. Then, a rotary motor drives the crushing rollers to rotate. With the help of two functional gears, the two crushing rollers rotate synchronously, enabling them to crush the plastic granules and prevent the granules from affecting subsequent melting due to size differences, thus avoiding impacts on the quality of the final plastic product.

[0003] The aforementioned technical solution uses a filter screen to filter plastic raw materials. Its working principle is to intercept larger plastic materials, allowing only normally sized materials to pass through. However, during filtration, some incompletely crushed plastic materials are intercepted and accumulate on the filter screen surface. This accumulation not only directly obstructs the path of normally sized materials through the filter screen, significantly reducing filtration efficiency, but also requires operators to frequently clean the larger materials from the filter screen surface to maintain filtration function. Frequent cleaning leads to equipment downtime. As the filtration process is a critical step, its reduced efficiency directly affects the smoothness of the entire production line, ultimately resulting in low production efficiency of plastic products, making it difficult to meet the demands of high-efficiency production. Therefore, we propose a plastic product injection molding machine. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a plastic product injection molding machine that can solve the problem of using a filter screen to filter plastic raw materials. The working principle of the device is to use the filter screen to intercept larger plastic raw materials, allowing only normal-sized raw materials to pass through. However, during the filtration process, some plastic raw materials that are not completely crushed will be intercepted by the filter screen and continuously accumulate on the filter screen surface. This accumulation not only directly hinders the path of normal-sized raw materials through the filter screen, causing a significant decrease in filtration efficiency, but also, as the accumulation increases, the operator needs to frequently clean the larger raw materials on the filter screen surface to maintain the filtration function. Frequent cleaning will cause equipment operation interruption. As the filtration process is a key process, the reduction in its efficiency directly affects the smoothness of the entire production line, ultimately leading to low production efficiency of plastic products and difficulty in meeting the needs of high-efficiency production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic product injection molding machine, comprising:

[0006] The injection molding material conveying structure and the feeding box are fixedly installed on the feeding end of the injection molding material conveying structure. The inside of the feeding box is equipped with a plastic crushing structure.

[0007] A plastic screening structure is located on the feed hopper.

[0008] The plastic screening structure includes two conveying rollers, a conveying screen, a rotating motor, a conveying cylinder, a discharge hopper, and a feed pipe. The two conveying rollers are rotatably connected inside the feed box. The rotating motor is fixedly installed on one side of the feed box, and its output end extends rotatably into the feed box and is fixedly connected to the corresponding conveying roller. The conveying screen is driven and sleeved on the outer surface of the two conveying rollers. The discharge hopper and feed pipe are both fixedly connected to the outer surface of the conveying cylinder and to one side of the feed box. The discharge hopper and feed pipe are both connected to the inside of the feed box. A conveying screw is rotatably connected inside the conveying cylinder, and a conveying motor is fixedly connected to the bottom of the conveying cylinder. The output end of the conveying motor extends rotatably into the inside of the conveying cylinder and is fixedly connected to the conveying screw.

[0009] Preferably, the plastic screening structure further includes a guide hopper and a guide frame, both of which are fixedly connected inside the feed box. The guide hopper is located above the conveying screen, and the guide frame is located inside the conveying screen.

[0010] Preferably, the plastic crushing structure includes two crushing rollers, two gears, and a drive motor. The two crushing rollers are rotatably connected inside the feed box. The drive motor is fixedly installed on the side of the feed box away from the conveying cylinder. The output end of the drive motor rotatably extends into the feed box and is fixedly connected to the corresponding crushing roller. The ends of the two crushing rollers away from the drive motor rotatably extend to the outside of the feed box and are fixedly connected to the corresponding gears. The two gears mesh with each other.

[0011] Preferably, the feed box has two guide plates fixedly connected inside, and both guide plates are located above the corresponding crushing rollers.

[0012] Preferably, the guide frame is arranged at an angle inside the conveying screen.

[0013] Preferably, the lowest end of the guide hopper is located above the guide frame.

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

[0015] 1. This plastic product injection molding machine, through a screening structure composed of a conveying screen and a guide frame, can dynamically convey raw materials and promptly transport unqualified raw materials to the discharge hopper, avoiding the accumulation of raw materials that hinders the screening process. Qualified raw materials can directly enter the injection molding conveying structure. The entire process is smooth and efficient, and there is no need to interrupt production due to cleaning the filter screen, which greatly improves the continuity and overall efficiency of plastic product production and meets the needs of high-efficiency production. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the feed box structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the guide hopper structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the conveying screen of this utility model.

[0021] Reference numerals in the attached drawings: 1. Injection molding material conveying structure; 2. Feed box; 3. Drive motor; 4. Rotary motor; 5. Conveying cylinder; 6. Crushing roller; 7. Conveying screw; 8. Conveying motor; 9. Gear; 10. Guide hopper; 11. Guide frame; 12. Conveying screen; 13. Conveying roller; 14. Discharge hopper; 15. Feed pipe; 16. Guide plate. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a plastic product injection molding machine, comprising:

[0027] Injection molding material conveying structure 1 and feeding box 2, the feeding box 2 is fixedly installed on the feeding end of injection molding material conveying structure 1, and the inside of the feeding box 2 is equipped with a plastic crushing structure;

[0028] A plastic screening structure is located on the feed box 2;

[0029] The plastic screening structure includes two conveying rollers 13, a conveying screen 12, a rotating motor 4, a conveying cylinder 5, a discharge hopper 14, and a feed pipe 15. The two conveying rollers 13 are rotatably connected inside the feed box 2. The rotating motor 4 is fixedly installed on one side of the feed box 2. The output end of the rotating motor 4 extends rotatably into the interior of the feed box 2 and is fixedly connected to the corresponding conveying roller 13. The conveying screen 12 is driven and sleeved on the outer surface of the two conveying rollers 13. The discharge hopper 14 and the feed pipe 15 are both fixedly connected to the outer surface of the conveying cylinder 5 and to one side of the feed box 2. The discharge hopper 14 and the feed pipe 15 are both connected to the interior of the feed box 2. A conveying screw 7 is rotatably connected inside the conveying cylinder 5. A conveying motor 8 is fixedly connected to the bottom of the conveying cylinder 5. The output end of the conveying motor 8 extends rotatably into the interior of the conveying cylinder 5 and is fixedly connected to the conveying screw 7.

[0030] The plastic screening structure also includes a guide hopper 10 and a guide frame 11. Both the guide hopper 10 and the guide frame 11 are fixedly connected inside the feed box 2. The guide hopper 10 is located above the conveying screen 12, and the guide frame 11 is located inside the conveying screen 12. The guide frame 11 is set in an inclined position inside the conveying screen 12, and the lowest end of the guide hopper 10 is located above the guide frame 11.

[0031] The plastic crushing structure includes two crushing rollers 6, two gears 9, and a drive motor 3. Both crushing rollers 6 are rotatably connected inside the feed box 2. The drive motor 3 is fixedly installed on the side of the feed box 2 away from the conveying cylinder 5. The output end of the drive motor 3 rotatably extends into the interior of the feed box 2 and is fixedly connected to the corresponding crushing roller 6. The ends of the two crushing rollers 6 away from the drive motor 3 rotatably extend to the outside of the feed box 2 and are fixedly connected to the corresponding gears 9. The two gears 9 mesh with each other.

[0032] The inside of the feed box 2 is fixedly connected to two guide plates 16, both of which are located above the corresponding crushing roller 6.

[0033] Furthermore, when using this device, when using the plastic product injection molding machine, the plastic raw material enters the feed box 2. At this time, the drive motor 3 starts, and the output end of the drive motor 3 drives the crushing roller 6 connected to it to rotate. The two crushing rollers 6 rotate in opposite directions through the gears 9 that mesh with each other at their ends, and squeeze, shear and crush the plastic raw material entering the feed box 2. Under the guidance of the two guide plates 16, the raw material enters evenly between the two crushing rollers 6 to complete the preliminary crushing process.

[0034] After initial crushing, the raw material falls into the guide hopper 10 and is guided by the guide hopper 10 to the conveying screen 12. Subsequently, the rotating motor 4 drives the corresponding conveying roller 13 to rotate. With the rotation of the two conveying rollers 13, the conveying screen 12 is driven to move. Since the guide frame 11 is inclined inside the conveying screen 12, during the operation of the conveying screen 12, small particles of raw material that meet the size requirements pass through the screen gaps and fall into the lower channel under the guidance of the guide frame 11, entering the feed end of the injection molding feeding structure 1. Larger particles of raw material are intercepted by the conveying screen 12 and are conveyed to the discharge hopper 14 and discharged into the conveying cylinder 5 as the conveying screen 12 moves. The conveying motor 8 starts, and its output end drives the conveying screw 7 to rotate in the conveying cylinder 5. The rotation of the conveying screw 7 pushes the unqualified raw material along the conveying cylinder 5 from the feed pipe 15 into the feed box 2 for secondary crushing.

[0035] The screening structure composed of the conveying screen 12 and the guide frame 11 can dynamically convey raw materials and promptly transport unqualified raw materials to the discharge hopper 14, avoiding the accumulation of raw materials that hinders the screening process. Qualified raw materials can directly enter the injection molding conveying structure 1. The whole process is smooth and efficient, and there is no need to interrupt production due to cleaning the filter screen. This greatly improves the continuity and overall efficiency of plastic product production and meets the needs of high-efficiency production.

[0036] Structural Description: Injection Molding Material Feeding Structure 1: Used to receive qualified plastic raw materials and transport them to the subsequent processing parts of the injection molding machine. It is the channel for the raw materials to enter the injection molding process. For specific details of existing equipment, please refer to the patent: CN220784668U.

[0037] Feed box 2: It is fixedly installed at the feeding end of the injection molding conveying structure 1, providing installation space for the plastic crushing structure and the plastic screening structure, and is the main place for raw material pretreatment;

[0038] Conveying cylinder 5: Externally connected to discharge hopper 14 and feed pipe 15, internally equipped with conveying screw 7, used to transport unqualified raw materials and return them to feed box 2 for secondary crushing;

[0039] Crushing roller 6: Rotatably connected inside the feed box 2, driven by the drive motor 3, it rotates in the opposite direction through the meshing gears 9 to squeeze, shear and crush the plastic raw material;

[0040] Conveying screw 7: Rotatably connected inside the conveying cylinder 5, it rotates under the drive of the conveying motor 8, pushing the unqualified raw materials to move inside the conveying cylinder 5;

[0041] Gear 9: Fixed to the ends of the two crushing rollers 6 respectively, and through mutual meshing, the two crushing rollers 6 can rotate in opposite directions to ensure the crushing effect;

[0042] The guide hopper 10 is fixed inside the feed box 2 and located above the conveying screen 12. It guides the pre-crushed raw materials to the conveying screen 12 and distributes them evenly on the screen.

[0043] Material guide frame 11: It is tilted and fixed inside the conveying screen 12 to guide the raw materials that meet the size requirements through the screen gaps and fall into the lower channel to enter the injection molding material conveying structure 1;

[0044] Conveying screen 12: The transmission sleeve is connected to the outer surface of the two conveying rollers 13 to screen the raw materials after preliminary crushing, intercept larger-sized raw materials, and allow qualified raw materials to pass through;

[0045] Conveyor roller 13: Rotatably connected inside the feed box 2, it rotates under the drive of the rotating motor 4, driving the conveyor screen 12 to run, realizing the conveying and screening of raw materials;

[0046] Discharge hopper 14: Fixed on the outer surface of the conveying cylinder 5 and connected to the feed box 2, it collects larger raw materials intercepted by the conveying screen 12 and guides them into the conveying cylinder 5;

[0047] Feed pipe 15: Fixed on the outer surface of conveying cylinder 5 and connected to feed box 2, it sends unqualified raw materials in conveying cylinder 5 back to feed box 2 for secondary crushing;

[0048] Guide plate 16: Fixed inside the feed box 2, located above the crushing roller 6, guides the plastic raw material to enter evenly between the two crushing rollers 6, ensuring uniform crushing.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A plastic product injection molding machine, characterized in that, include: The injection molding material conveying structure (1) and the feeding box (2) are fixedly installed on the feeding end of the injection molding material conveying structure (1). The inside of the feeding box (2) is equipped with a plastic crushing structure. A plastic screening structure is located on the feed box (2); The plastic screening structure includes two conveying rollers (13), a conveying screen (12), a rotating motor (4), a conveying cylinder (5), a discharge hopper (14), and a feed pipe (15). The two conveying rollers (13) are rotatably connected inside the feed box (2). The rotating motor (4) is fixedly installed on one side of the feed box (2). The output end of the rotating motor (4) extends rotatably into the inside of the feed box (2) and is fixedly connected to the corresponding conveying roller (13). Among them, the conveying screen (12) is driven sleeved on the outer surface of the two conveying rollers (13), the discharge hopper (14) and the feed pipe (15) are both fixedly connected to the outer surface of the conveying cylinder (5), and the discharge hopper (14) and the feed pipe (15) are both fixedly connected to one side of the feed box (2). The discharge hopper (14) and the feed pipe (15) are both connected to the inside of the feed box (2). The inside of the conveying cylinder (5) is rotatably connected to the conveying screw (7). The bottom of the conveying cylinder (5) is fixedly connected to the conveying motor (8). The output end of the conveying motor (8) rotatably extends into the inside of the conveying cylinder (5) and is fixedly connected to the conveying screw (7).

2. The injection molding machine for plastic products according to claim 1, characterized in that: The plastic screening structure also includes a guide hopper (10) and a guide frame (11). The guide hopper (10) and the guide frame (11) are both fixedly connected inside the feed box (2). The guide hopper (10) is located above the conveying screen (12), and the guide frame (11) is located inside the conveying screen (12).

3. The injection molding machine for plastic products according to claim 1, characterized in that: The plastic crushing structure includes two crushing rollers (6), two gears (9) and a drive motor (3). The two crushing rollers (6) are rotatably connected inside the feed box (2). The drive motor (3) is fixedly installed on the side of the feed box (2) away from the conveying cylinder (5). The output end of the drive motor (3) rotates and extends into the inside of the feed box (2) and is fixedly connected to the corresponding crushing roller (6). The ends of the two crushing rollers (6) away from the drive motor (3) rotate and extend to the outside of the feed box (2) and are fixedly connected to the corresponding gears (9). The two gears (9) mesh with each other.

4. A plastic product injection molding machine according to claim 3, characterized in that: The feed box (2) has two guide plates (16) fixedly connected inside, and both guide plates (16) are located above the corresponding crushing roller (6).

5. A plastic product injection molding machine according to claim 2, characterized in that: The guide frame (11) is inclined and installed inside the conveying screen (12).

6. A plastic product injection molding machine according to claim 2, characterized in that: The lowest end of the guide hopper (10) is located above the guide frame (11).

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