Injection molding machine for plastic products

Abstract

The utility model discloses an injection molding machine for plastic products, and particularly relates to the technical field of injection molding machines, the injection molding machine comprises an injection molding machine body and a feeding box, the feeding box is located at the right part of the injection molding machine body, the upper part of the right end of the feeding box is fixedly connected with a feeding plate, and the lower end of the feeding box is fixedly connected with supporting legs; four air suction fans are fixedly connected to the lower end of the feeding box, a filtering mechanism is fixedly connected to the inner surface of the feeding box, and a conveying device is fixedly connected to the left portion of the feeding box. According to the injection molding machine for the plastic products disclosed by the utility model, through the designed filtering mechanism, plastic raw materials are subjected to impurity removal treatment, so that the molecular structure of plastic is prevented from being damaged by impurities, and the condition that the performance of the plastic products is reduced due to the impurities is reduced; and the problem that appearance defects are formed on the surfaces of the plastic products due to the existence of impurities can be effectively avoided, the attractiveness of the products is improved, and the processing quality of the plastic products is ensured.

Description

Technical Field

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

[0002] An injection molding machine is a primary molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds.

[0003] During the production, storage and transportation of plastic raw materials, various impurities, such as dust and fibers, inevitably get mixed in. The presence of impurities can cause serious quality problems to plastic products, such as forming obvious defects on the surface of plastic products, such as black spots, pits, streaks, etc., which seriously affect the appearance of the products and reduce their market competitiveness.

[0004] Impurities can also damage the molecular structure and uniformity of plastics, causing a significant decrease in the physical and chemical properties of plastic products. This can lead to a reduction in the strength and toughness of plastic products, making them prone to cracking and deformation during use.

[0005] Therefore, an injection molding machine for plastic products is needed. Utility Model Content

[0006] The main objective of this invention is to provide an injection molding machine for plastic products, which can effectively solve the problems mentioned above.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An injection molding machine for plastic products includes an injection molding machine body and a feeding box. The feeding box is located on the right side of the injection molding machine body. A feed plate is fixedly connected to the upper right end of the feeding box. Support legs are fixedly connected to the four corners of the lower end of the feeding box. Four suction fans are fixedly connected to the lower end of the feeding box. A filter mechanism is fixedly connected to the lower inner surface of the feeding box. A material conveying device is fixedly connected to the left side of the feeding box.

[0009] Preferably, the filtering mechanism includes a filter plate, which is slidably connected to the lower part of the inner surface of the feeding box. Each of the four corners of the lower end of the filter plate is fixedly connected to an elastic mechanism, and the middle part of the lower end of the filter plate is fixedly connected to a shaking mechanism. A feeding port is fixedly connected to the lower left end of the feeding box.

[0010] Preferably, the four elastic mechanisms are fixedly connected to the four lower corners of the inner surface of the feeding box.

[0011] Preferably, the shaking mechanism includes a stepper motor, which is fixedly connected to the lower middle part of the front end of the feeding box. A transmission rod is fixedly connected to the output end of the stepper motor. Cams are fixedly connected to the front and rear parts of the transmission rod. A drive rod is rotatably connected to the upper part of the inner cavity of each of the two cams. A connecting rod is rotatably connected to the upper part of each of the two drive rods.

[0012] Preferably, the upper ends of both connecting rods are fixedly connected to the lower end of the filter plate.

[0013] Preferably, the elastic mechanism includes a fixed plate, which is fixedly connected to the lower part of the inner surface of the feeding box. A fixed rod is slidably connected to the middle of the upper end of the fixed plate. A rebound spring is sleeved on the outer surface of the fixed rod. The upper end of the fixed rod is fixedly connected to the lower end of the filter plate.

[0014] Preferably, the material conveying device includes a material conveying cylinder, which is fixedly connected to the feeding port and the discharge port. A servo motor is fixedly connected to the middle of the upper end of the material conveying cylinder. A rotating shaft is fixedly connected to the output end of the servo motor. Screw blades are fixedly connected to the outer surface of the rotating shaft. A material transfer box is fixedly connected to the upper part of the outer surface of the material conveying cylinder. The lower end of the rotating shaft is rotatably connected to the bottom wall of the material conveying cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This device, through its designed filtration mechanism, can remove impurities from plastic raw materials, preventing impurities from damaging the molecular structure of the plastic and reducing the decline in the strength, toughness, corrosion resistance, insulation, and other properties of plastic products caused by impurities. This ensures that the products can meet the stringent performance requirements in different application scenarios. Its impurity removal can also effectively avoid appearance defects such as spots, blemishes, unevenness, etc. on the surface of plastic products caused by impurities, making the product surface smoother, flatter, and with uniform color, improving the product's aesthetics and visual effect, thereby ensuring the processing quality of plastic products.

[0017] 2. This device, through its designed material conveying system, can convey raw materials. When dealing with injection molding machines of different specifications, especially those with greater height, the material conveying system can directly transport the raw materials into the injection molding machine. It can automatically complete the material conveying work without manual intervention, effectively avoiding the inconvenience and efficiency loss caused by the height of the equipment in traditional material feeding methods, and greatly improving the convenience and continuity of material conveying. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the filter mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the shaking mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the elastic mechanism structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the explosion effect of the shaking mechanism of this utility model;

[0024] Figure 7 This is a schematic diagram of the material conveying device of this utility model.

[0025] In the diagram: 1. Injection molding machine body; 2. Material conveying device; 3. Feed box; 4. Feed plate; 5. Support leg; 6. Filtering mechanism; 7. Suction fan; 61. Filter plate; 62. Elastic mechanism; 63. Shaking mechanism; 64. Feed port; 631. Stepper motor; 632. Connecting rod; 633. Transmission rod; 634. Drive rod; 635. Cam; 621. Fixed rod; 622. Rebound spring; 623. Fixed plate; 21. Servo motor; 22. Material conveying cylinder; 23. Material transfer box; 24. Screwdriver blades; 25. Rotating shaft. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Example 1, as Figure 1 and Figure 2 As shown, an injection molding machine for plastic products includes an injection molding machine body 1 and a feeding box 3. The feeding box 3 is located on the right side of the injection molding machine body 1. A feed plate 4 is fixedly connected to the upper right end of the feeding box 3. Support legs 5 are fixedly connected to the four corners of the lower end of the feeding box 3. Four suction fans 7 are fixedly connected to the lower end of the feeding box 3. A filter mechanism 6 is fixedly connected to the lower part of the inner surface of the feeding box 3. A material conveying device 2 is fixedly connected to the left side of the feeding box 3.

[0028] The injection molding machine body 1 in this device is an injection molding machine, which is a main molding equipment for making various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molding molds;

[0029] It consists of an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system, a lubrication system, a heating and cooling system, and a safety monitoring system.

[0030] Before implementing this device, firstly:

[0031] Power on the device, and then start the filter mechanism 6, the suction fan 7 and the material conveying device 2 in sequence.

[0032] After starting, the raw materials are poured from the feed plate 4 into the feeding box 3. After the raw materials enter the feeding box 3, they will fall onto the filter mechanism 6. At this time, the filter mechanism 6 will drive the raw materials to vibrate, and the impurities and dust in the raw materials will be removed by vibration. At this time, the suction fan 7 will suck the impurities and dust out of the raw materials.

[0033] As described above, a screen frame is slidably connected to the lower part of the inner surface of the feeding box 3. Before implementing this device, the screen frame can be pulled out from the feeding box 3, and then the screen can be fixed on the screen frame. When the suction fan 7 sucks the dust out from the filter mechanism 6, the dust will be isolated on the screen installed on the screen frame, causing the dust to accumulate on the screen and collect the dust, thus preventing the dust from adhering to the suction fan 7 and affecting the working efficiency of the suction fan 7.

[0034] By designing the slope of the filter mechanism 6, the raw material enters the conveying device 2, and then the conveying device 2 transports the raw material from bottom to top to the feed port of the injection molding machine body 1 for injection molding.

[0035] As mentioned above, impurities in the raw materials may cause problems such as spots, unevenness, and uneven color on the surface of the plastic basin. By filtering the raw materials through the filtration mechanism 6, the purity of the raw materials can be ensured, making the surface of the plastic basin smooth and the color uniform, thus improving the appearance quality of the product.

[0036] The design of the feeding device 2 described above makes feeding more convenient when using the injection molding machine body 1, reduces the labor intensity of workers, and improves work efficiency.

[0037] In Example 2, furthermore, in order to achieve the purpose of the filtering mechanism 6 screening and removing impurities from the raw material when it enters the feeding box 3 from the feeding plate 4 and falls onto the filtering mechanism 6, please refer to... Figure 3 - Figure 6 The filtering mechanism 6 includes a filter plate 61, which is slidably connected to the lower part of the inner surface of the feeding box 3. The four corners of the lower end of the filter plate 61 are fixedly connected to an elastic mechanism 62, and the middle part of the lower end of the filter plate 61 is fixedly connected to a shaking mechanism 63. The lower left end of the feeding box 3 is fixedly connected to a feeding port 64.

[0038] Furthermore, four elastic mechanisms 62 are respectively fixedly connected to the four corners of the lower part of the inner surface of the feeding box 3;

[0039] Furthermore, the shaking mechanism 63 includes a stepper motor 631, which is fixedly connected to the lower middle part of the front end of the feeding box 3. A transmission rod 633 is fixedly connected to the output end of the stepper motor 631. Cams 635 are fixedly connected to the front and rear parts of the transmission rod 633. Drive rods 634 are rotatably connected to the upper part of the inner cavity of the two cams 635. Connecting rods 632 are rotatably connected to the upper part of the two drive rods 634.

[0040] Furthermore, the upper ends of both connecting rods 632 are fixedly connected to the lower end of the filter plate 61;

[0041] Furthermore, the elastic mechanism 62 includes a fixed plate 623, which is fixedly connected to the lower part of the inner surface of the feeding box 3. A fixed rod 621 is slidably connected to the middle of the upper end of the fixed plate 623. A rebound spring 622 is sleeved on the outer surface of the fixed rod 621. The upper end of the fixed rod 621 is fixedly connected to the lower end of the filter plate 61.

[0042] In the above process, when the raw material is poured into the feeding box 3, the stepper motor 631 is started first to move, so that the output end of the stepper motor 631 rotates, and the output end of the stepper motor 631 drives the transmission rod 633 to rotate together through the coupling.

[0043] In the above description, after the stepper motor 631 starts, the raw material is poured from the feed plate 4 into the feeding box 3, so that the raw material falls on the upper part of the filter plate 61. At this time, the stepper motor 631 drives the transmission rod 633 to rotate, which in turn drives the cam 635 to rotate. When the cam 635 rotates, it will drive the drive rod 634 to move up and down reciprocally through its rotational connection with the drive rod 634. After the drive rod 634 moves up and down reciprocally, it will drive the connecting rod 632 to move up and down reciprocally. At this time, the connecting rod 632 will drive the filter plate 61 to move up and down reciprocally through its fixed connection with the filter plate 61, thereby achieving the purpose of causing the filter plate 61 to vibrate.

[0044] In the above process, the vibration of the filter plate 61 causes the raw material to initially move downwards due to inertia and mass. As the filter plate 61 moves downwards, the raw material will not move downwards directly due to inertia. Then, because the mass of the raw material is greater than the mass of the impurities and dust, the raw material will fall downwards first due to gravity. Afterwards, the filter plate 61 will be pushed back to its original position by the connecting rod 632, causing the filter plate 61 to collide with the falling raw material. This achieves the purpose of making the raw material vibrate along with the filter plate 61, thereby screening out the impurities and dust in the raw material.

[0045] In the above process, after impurities and dust are screened out, the design of the suction fan 7 allows the suction fan 7 to draw the impurities and dust through the filter plate 61 to the surface of the screen installed on the screen frame, thereby achieving the purpose of removing impurities, ensuring that the raw materials are cleaner, and improving the appearance quality of the product.

[0046] In the above, by designing the inclined surface of the filter plate 61, the filter plate 61 conveys the raw material into the feed port 64, and then conveys it into the conveying device 2 through the feed port 64, so that the conveying device 2 conveys the raw material into the injection molding machine body 1 for processing.

[0047] In the above, when the connecting rod 632 moves the filter plate 61 downward, it will also move the fixing rod 621 downward, causing the fixing rod 621 to slide on the upper end of the fixing plate 623. At this time, the filter plate 61 will compress the rebound spring 622 to generate pressure for buffering. When the connecting rod 632 moves the filter plate 61 upward, the rebound spring 622 will release the pressure to prepare for the next buffering and improve the stability of the filter plate 61 when it vibrates.

[0048] Furthermore, in order to achieve the purpose of conveying the raw material into the feeding port of the injection molding machine body 1 after it enters the feeding device 2, refer to... Figure 7 The material conveying device 2 includes a material conveying cylinder 22, which is fixedly connected to the material outlet 64. A servo motor 21 is fixedly connected to the middle of the upper end of the material conveying cylinder 22. A rotating shaft 25 is fixedly connected to the output end of the servo motor 21. An auger blade 24 is fixedly connected to the outer surface of the rotating shaft 25. A material transfer box 23 is fixedly connected to the upper part of the outer surface of the material conveying cylinder 22. The lower end of the rotating shaft 25 is rotatably connected to the bottom wall of the material conveying cylinder 22.

[0049] In the above process, the servo motor 21 is started to work, and the output end of the servo motor 21 rotates. The output end then drives the rotating shaft 25 to rotate together through the coupling, and the rotating shaft 25 drives the auger blades 24 to rotate together. When the raw material enters the conveying cylinder 22 from the feed plate 4, it will be conveyed upward by the auger blades 24 and conveyed into the transfer box 23. Then, it is conveyed from the transfer box 23 into the feed port of the injection molding machine body 1.

[0050] As described above, when the auger blades 24 rotate, the raw materials are conveyed into the feed box 23 via the screw conveyor.

[0051] As described above, the spiral conveyor can achieve continuous and stable material delivery, ensuring that the injection molding machine body 1 will not experience material interruption during the production process, thereby improving production efficiency and product quality stability.

[0052] It should be noted that the specific installation method, circuit connection method and control method of the stepper motor 631 and servo motor 21 used in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine for plastic articles, comprising an injection molding machine body (1) and a hopper (3), characterized in that: The feeding box (3) is located on the right side of the injection molding machine body (1). The upper right end of the feeding box (3) is fixedly connected to the feeding plate (4). The four corners of the lower end of the feeding box (3) are fixedly connected to the support legs (5). The lower end of the feeding box (3) is fixedly connected to four suction fans (7). The lower inner surface of the feeding box (3) is fixedly connected to the filter mechanism (6). The left side of the feeding box (3) is fixedly connected to the conveying device (2).

2. An injection molding machine for plastic articles as claimed in claim 1, characterized in that: The filtering mechanism (6) includes a filter plate (61), which is slidably connected to the lower part of the inner surface of the feeding box (3). The four corners of the lower end of the filter plate (61) are fixedly connected to elastic mechanisms (62), and the middle part of the lower end of the filter plate (61) is fixedly connected to a shaking mechanism (63). The lower part of the left end of the feeding box (3) is fixedly connected to a feeding port (64).

3. An injection molding machine for plastic articles as claimed in claim 2, characterized in that: The four elastic mechanisms (62) are respectively fixedly connected to the four corners of the lower part of the inner surface of the feeding box (3).

4. An injection molding machine for plastic articles as defined in claim 2, characterized in that: The shaking mechanism (63) includes a stepper motor (631), which is fixedly connected to the lower middle part of the front end of the feeding box (3). A transmission rod (633) is fixedly connected to the output end of the stepper motor (631). Cams (635) are fixedly connected to the front and rear parts of the transmission rod (633). A drive rod (634) is rotatably connected to the upper part of the inner cavity of the two cams (635). A connecting rod (632) is rotatably connected to the upper part of the two drive rods (634).

5. An injection molding machine for plastic articles as claimed in claim 4, characterized in that: The upper ends of both connecting rods (632) are fixedly connected to the lower end of the filter plate (61).

6. An injection molding machine for plastic articles as defined in claim 2, characterized in that: The elastic mechanism (62) includes a fixed plate (623), which is fixedly connected to the lower part of the inner surface of the feeding box (3). A fixed rod (621) is slidably connected to the middle of the upper end of the fixed plate (623). A rebound spring (622) is sleeved on the outer surface of the fixed rod (621). The upper end of the fixed rod (621) is fixedly connected to the lower end of the filter plate (61).

7. An injection molding machine for plastic articles as defined in claim 2, characterized in that: The feeding device (2) includes a feeding cylinder (22), which is fixedly connected to the feeding port (64) and the discharge port. A servo motor (21) is fixedly connected to the middle of the upper end of the feeding cylinder (22). A rotating shaft (25) is fixedly connected to the output end of the servo motor (21). A screw conveyor blade (24) is fixedly connected to the outer surface of the rotating shaft (25). A material transfer box (23) is fixedly connected to the upper part of the outer surface of the feeding cylinder (22). The lower end of the rotating shaft (25) is rotatably connected to the bottom wall of the feeding cylinder (22).

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