An injection molding equipment for processing plastic buckets

Abstract

This utility model discloses an injection molding equipment for processing plastic buckets, including a frame, an injection molding machine mounted on top of the frame, a rotating frame rotatably connected to the frame, a control motor at one end of the frame cooperating with the rotating frame, inner molds at both the upper and lower ends of the rotating frame, a lifting push rod on the frame, a lifting frame at the movable end of the lifting push rod, an outer mold at the lower end of the lifting frame, the injection molding machine mounted on the lifting frame and cooperating with the outer mold, the outer mold cooperating with the inner mold, an air pump on the rotating frame, an air chamber inside the inner mold, an air hole at the outer end of the inner mold communicating with the air chamber, the air pump cooperating with the air chamber, a control push rod on the inner mold, a movable plate at the movable end of the control push rod cooperating with the air hole. This equipment has better production efficiency and better quality.

Description

Technical Field

[0001] This utility model relates to the field of plastic bucket production technology, and more specifically, it relates to an injection molding equipment for processing plastic buckets. Background Technology

[0002] Plastic buckets are a common type of container with widespread market demand. They are typically formed using injection molding equipment.

[0003] In most common injection molding machines, the molds are one-to-one. During injection molding, the raw material injected into the mold needs to cool to solidify and solidify. Complete shaping requires a certain cooling time before the plastic bucket can be unloaded. This waiting period is time-consuming and affects production efficiency. Furthermore, in existing injection molding machines, after shaping, the mold separates, leaving the plastic bucket on the mold. The bucket needs to be manually removed, which is cumbersome, has low automation, and low production efficiency. Additionally, the structure of the plastic bucket is not uniform; the bottom, body, and opening have different structures. Ordinary injection molding machines rely on simple water channels within the mold to cool the bucket at a uniform temperature. Due to structural differences, areas near the gate cool quickly and shrink, while areas further away cool slowly and deform, affecting the quality of the plastic bucket. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides an injection molding equipment for processing plastic buckets, so as to solve the technical problems mentioned in the background art of simple structure and poor working effect of injection molding equipment.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an injection molding equipment for processing plastic buckets, comprising a frame, an injection molding machine mounted on top of the frame, a rotating frame rotatably connected to the frame, a control motor mounted at one end of the frame, the control motor cooperating with the rotating frame, inner molds mounted at both the upper and lower ends of the rotating frame, a lifting push rod mounted on the frame, a lifting frame mounted at the movable end of the lifting push rod, an outer mold mounted at the lower end of the lifting frame, the injection molding machine mounted on the lifting frame and cooperating with the outer mold, and the outer mold cooperating with the inner mold; The rotating frame is equipped with an air pump, the inner mold has an air cavity, the outer end of the inner mold has an air hole, the air hole communicates with the air cavity, the air pump cooperates with the air cavity, the inner mold is equipped with a control push rod, the movable end of the control push rod is equipped with a movable plate, and the movable plate cooperates with the air hole.

[0006] The present invention is further configured such that a first cooling cavity, a second cooling cavity, and a third cooling cavity are provided in both the inner mold and the outer mold. The first cooling cavity is located near the bottom of the barrel, the second cooling cavity is located near the body of the barrel, and the third cooling cavity is located near the opening of the barrel. The first cooling cavity, the second cooling cavity, and the third cooling cavity are independently configured and independently perform cooling to provide cooling quality.

[0007] The present invention is further configured such that both the inner mold and the outer mold are provided with water guide pipes, and the water guide pipes on both the inner mold and the outer mold are provided in three sets, which respectively cooperate with the first cooling cavity, the second cooling cavity and the third cooling cavity. The water guide pipes include inlet pipes and outlet pipes for easy cooperation.

[0008] The present invention is further provided that a collection box is provided below the rotating frame, and the lower end of the collection box is provided with a moving wheel to facilitate the collection of plastic buckets.

[0009] The present invention is further configured such that a limiting frame is fixedly connected to one end of the frame, and a shielding frame is rotatably connected to the other end. Both the limiting frame and the shielding frame cooperate with the collection box to stabilize the plastic bucket.

[0010] The present invention is further configured such that a guide ring is provided on the inner side of the frame, and a guide rod is provided at the lower end of the lifting frame. The guide rod and the guide ring are slidably engaged to make the mold fit stably.

[0011] The present invention is further configured such that a sealing ring is provided at the side end of the movable plate, the radius of the sealing ring being smaller than the radius of the air cavity but larger than the radius of the air hole, thereby improving the sealing effect of the air hole.

[0012] The present invention is further configured such that the inner side of the air hole and the lower side of the movable plate are both inclined, thereby further improving the sealing capability.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides an injection molding equipment for processing plastic buckets, which has the following beneficial effects: 1. The injection molding machine provides injection capacity, and works with the outer and inner molds to produce plastic buckets. The frame, rotating frame and control motor work together to provide a drive structure, so that the two inner molds alternately work with the outer mold. During injection molding, the inner mold can cool and solidify the plastic bucket produced previously, reducing the time required for cooling and improving the working efficiency of the injection molding equipment.

[0014] 2. The adsorption capacity is provided by the cooperation of air pump, air chamber and air hole. By controlling the cooperation of push rod and moving plate, the air hole is folded. When the mold is separated, the air pressure is used to adsorb the plastic bucket on the inner mold to maintain the temperature. When demolding, the plastic bucket is blown away to demold. No manual operation is required, which is convenient for workers and improves the working efficiency of the equipment.

[0015] 3. By cooperating with the first, second, and third cooling chambers, three independent cooling structures are provided, which provide different cooling temperatures for different positions of the plastic bucket, making the cooling and shaping of the plastic bucket more stable, reducing deviations in roundness, and improving the production quality of the plastic bucket. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of an injection molding equipment for processing plastic buckets according to this utility model; Figure 2 This is a schematic diagram of the interaction structure between the injection molding machine and the frame when the lifting frame rises in this utility model; Figure 3 This is a schematic diagram of the disassembled and assembled structure of the inner and outer molds in this utility model; Figure 4 This is a cross-sectional view of the internal mating structure of the inner and outer molds in this utility model; Figure 5 This is a cross-sectional view of the internal structure of the inner mold and the movable plate in this utility model.

[0017] In the diagram: 1. Frame; 2. Injection molding machine; 3. Rotating frame; 4. Control motor; 5. Inner mold; 6. Lifting push rod; 7. Lifting frame; 8. Outer mold; 9. Air pump; 10. Air chamber; 11. Air hole; 12. Control push rod; 13. Movable plate; 14. First cooling chamber; 15. Second cooling chamber; 16. Third cooling chamber; 17. Water guide pipe; 18. Water inlet pipe; 19. Water outlet pipe; 20. Collection box; 21. Moving wheels; 22. Limiting frame; 23. Blocking frame; 24. Guide ring; 25. Guide rod; 26. Closing ring. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] Please see Figure 1-5 A plastic bucket injection molding equipment includes a frame 1, an injection molding machine 2 mounted on top of the frame 1, a rotating frame 3 rotatably connected to the frame 1, a control motor 4 mounted at one end of the frame 1, the control motor 4 cooperating with the rotating frame 3, inner molds 5 mounted at both the upper and lower ends of the rotating frame 3, a lifting push rod 6 mounted on the frame 1, a lifting frame 7 mounted at the movable end of the lifting push rod 6, an outer mold 8 mounted at the lower end of the lifting frame 7, the injection molding machine 2 mounted on the lifting frame 7 and cooperating with the outer mold 8, and the outer mold 8 cooperating with the inner mold 5; The rotating frame 3 is equipped with an air pump 9, the inner mold 5 has an air cavity 10, the outer end of the inner mold 5 has an air hole 11, the air hole 11 is connected to the air cavity 10, the air pump 9 is in cooperation with the air cavity 10, the inner mold 5 is equipped with a control push rod 12, the movable end of the control push rod 12 is equipped with a movable plate 13, the movable plate 13 is in cooperation with the air hole 11.

[0022] In this embodiment, the frame 1 provides support, connecting the equipment to an external power source for operation. The lifting push rod 6 is controlled to move the lifting frame 7, which in turn lowers the outer mold 8 to engage with the inner mold 5. After the outer mold 8 and inner mold 5 are in contact, the injection molding machine 2 is operated to inject plastic material into the mold and cool it to form a plastic bucket. Then, the lifting frame 7 is controlled to raise the outer mold 8, separating it from the inner mold 5, leaving the plastic bucket on the inner mold 5. After the outer mold 8 is completely separated from the inner mold 5, the control motor 4 is operated to rotate, causing the rotating frame 3 to rotate, so that the inner mold 5 with the plastic bucket faces downwards, while the other inner mold 5 rotates upwards, aligning with the outer mold 8, allowing for the next injection molding. During this process, the lower inner mold 5 continues to cool the plastic bucket. After cooling and solidification, the bucket is demolded and removed, shortening the time interval between the unloading of the molded plastic bucket and the injection molding operation.

[0023] More specifically, the air chamber 10 provides space and controls the operation of the air pump 9. During injection molding, the air pump 9 absorbs gas, drawing the gas remaining between the molds into the air chamber 10 through the air hole 11. Then, the control push rod 12 is operated to move the movable plate 13, blocking the air hole 11 for injection molding and forming. After the plastic bucket cools down, the control push rod 12 retracts the movable plate 13 into the air chamber 10, allowing the air chamber 10 to connect with the inner mold 5 through the air hole 11. The negative pressure provided by the air pump 9 sucks up the plastic bucket, and combined with the weight of the plastic bucket itself, the plastic bucket remains stably on the inner mold 5. After the rotating frame 3 flips, the plastic bucket remains in contact with the inner mold 5 for cooling. During demolding, the air pump 9 releases gas to provide air pressure, pushing the plastic bucket away and demolding it.

[0024] Please see Figure 1-4 As one implementation of gradient cooling: the inner mold 5 and the outer mold 8 are each provided with a first cooling cavity 14, a second cooling cavity 15 and a third cooling cavity 16. The first cooling cavity 14 is located near the bottom of the barrel, the second cooling cavity 15 is located near the body of the barrel and the third cooling cavity 16 is located near the mouth of the barrel. The first cooling cavity 14, the second cooling cavity 15 and the third cooling cavity 16 are independently provided.

[0025] Specifically, the first cooling chamber 14, the second cooling chamber 15, and the third cooling chamber 16 work together to provide three independent cooling structures, controlling the temperature of the cooling water in each chamber and cooling independently. The first cooling chamber 14 is close to the bottom of the barrel, i.e., close to the gate, and uses lower-temperature cooling water of 15-25℃ for delayed cooling to avoid shrinkage and sinking. The second cooling chamber 15 is close to the barrel body and uses warmer cooling water of 25-35℃ for uniform cooling to ensure uniform wall thickness. The third cooling chamber 16 is close to the barrel opening and uses higher-temperature cooling water of 35-45℃ for delayed cooling to reduce warping and deformation.

[0026] Please see Figure 4 As a further embodiment of the cooling chamber: both the inner mold 5 and the outer mold 8 are provided with water guide pipes 17. There are three sets of water guide pipes 17, which are respectively matched with the first cooling chamber 14, the second cooling chamber 15 and the third cooling chamber 16. The water guide pipes 17 include inlet pipes 18 and outlet pipes 19.

[0027] Specifically, the water supply equipment corresponding to the different water pipes 17 is connected, cooling water is introduced through the inlet pipe 18, and flows out from the cooling chamber through the outlet pipe 19.

[0028] Please see Figure 1 and Figure 2 As a further implementation of the inner mold: a collection box 20 is provided below the rotating frame 3, and a moving wheel 21 is provided at the lower end of the collection box 20.

[0029] Specifically, the collection box 20 provides a collection structure to collect the demolded plastic buckets under the frame 1, and the collection box 20 is in contact with the ground through the moving wheels 21, making it easy to move the collection box 20 to collect the plastic buckets.

[0030] Please see Figure 1 and Figure 2 As a further embodiment of the frame: a limiting frame 22 is fixedly connected to one end of the frame 1, and a shielding frame 23 is rotatably connected to the other end. Both the limiting frame 22 and the shielding frame 23 are in cooperation with the collection box 20.

[0031] Specifically, the frame 1 provides support, allowing the limiting frame 22 and the shielding frame 23 to work together to restrict the collection box 20, keeping the collection box 20 stable. By rotating the shielding frame 23, the shielding of the collection box 20 can be released, making it easy to move the collection box 20 out.

[0032] Please see Figure 1 and Figure 2 As a further embodiment of the frame: a guide ring 24 is provided on the inner side of the frame 1, and a guide rod 25 is provided at the lower end of the lifting frame 7. The guide rod 25 and the guide ring 24 are slidably engaged.

[0033] Specifically, when the lifting frame 7 moves, it will move along with the guide rod 25. Through the cooperation of the guide rod 25 and the guide ring 24, the movement of the lifting frame 7 remains stable.

[0034] Please see Figure 4 and Figure 5 As a further embodiment of the movable plate: a closing ring 26 is provided on the side end of the movable plate 13. The radius of the closing ring 26 is smaller than the radius of the air cavity 10, but larger than the radius of the air hole 11.

[0035] Specifically, when the movable plate 13 moves, it will move along with the sealing ring 26. The sealing ring 26 will contact the bottom of the air chamber 10, blocking the air hole 11 and maintaining stable air pressure.

[0036] Please see Figure 4 and Figure 5 As a further implementation of the vent: the inner side of the vent 11 and the lower side of the movable plate 13 are both sloped.

[0037] Specifically, when the movable plate 13 is in contact with the air hole 11, they will make contact through the inclined surface, which will improve the airtightness.

[0038] In summary, during the use or operation of the overall equipment: Supported by frame 1, the equipment is connected to an external power source. The collection box 20 is moved between frames 1. The shielding frame 23 is rotated to block and restrict the collection box 20. The restricting frame 22 and the shielding frame 23 work together to restrain the collection box 20, ensuring its stability and facilitating its removal. The equipment then begins operation. Controlling the lifting push rod 6 moves the lifting frame 7, which in turn moves the guide rod 25. The guide rod 25, in conjunction with the guide ring 24, ensures the lifting frame 7 remains stable. The lifting frame 7 lowers the outer mold 8 to engage with the inner mold 5. After the outer mold 8 and inner mold 5 are in contact, the injection molding machine 2 is activated to inject plastic material into the mold. The plastic bucket is cooled and formed. Then, the lifting frame 7 is controlled to lift the outer mold 8 and separate it from the inner mold 5. The plastic bucket remains on the inner mold 5. After the outer mold 8 is completely separated from the inner mold 5, the control motor 4 is operated to rotate, causing the control motor 4 to rotate the rotating frame 3, so that the inner mold 5 with the plastic bucket faces downward, while the other inner mold 5 rotates to the top and aligns with the outer mold 8, so that the next injection molding can be performed. During this period, the lower inner mold 5 continues to cool the plastic bucket. After cooling and solidification, it is demolded and removed, which shortens the time interval between the unloading of the molded plastic bucket and the injection molding operation. The collection box 20 provides a collection structure to collect the demolded plastic bucket under the frame 1. The collection box 20 is in contact with the ground through the moving wheels 21, which facilitates the movement of the collection box 20 to collect the collected plastic bucket.

[0039] The air chamber 10 provides space and controls the operation of the air pump 9. During injection molding, the air pump 9 absorbs gas, drawing the gas remaining between mold plates into the air chamber 10 through the air hole 11. Then, the control push rod 12 is operated, causing it to move the movable plate 13, blocking the air hole 11. As the movable plate 13 moves, it also moves the sealing ring 26, which contacts the bottom of the air chamber 10, blocking the air hole 11 and maintaining stable air pressure. Furthermore, when the movable plate 13 engages with the air hole 11, they make contact through an inclined surface, ensuring... With better airtightness, during injection molding and forming, after the plastic bucket has cooled, the control push rod 12 retracts into the air chamber 10 along with the movable plate 13, so that the air chamber 10 is connected to the inner mold 5 through the air hole 11. The negative pressure provided by the air pump 9 sucks up the plastic bucket, and with the weight of the plastic bucket itself, the plastic bucket remains stably on the inner mold 5. After the rotating frame 3 flips, the plastic bucket is still in contact with the inner mold 5 for cooling. During demolding, the air pump 9 releases gas to provide air pressure, pushing the plastic bucket away and demolding it.

[0040] During cooling, the water pipe 17 is connected to an external water supply device. The water pipes 17 connected to the first cooling chamber 14, the second cooling chamber 15, and the third cooling chamber 16 are respectively connected to different water supply devices. Each independent device provides cooling water at a specific temperature, so that the cooling water in the first cooling chamber 14, the second cooling chamber 15, and the third cooling chamber 16 can maintain a stable cooling capacity. Through the cooperation of the first cooling chamber 14, the second cooling chamber 15, and the third cooling chamber 16, three independent cooling structures are provided to control the temperature of the cooling water in different cooling chambers and perform cooling independently. The first cooling chamber 14 is close to the bottom of the barrel, that is, close to the pouring gate, and uses lower temperature cooling water of 15-25℃ for delayed cooling to avoid shrinkage and sinking. The second cooling chamber 15 is close to the barrel body and uses warmer cooling water of 25-35℃ for uniform cooling to ensure uniform wall thickness. The third cooling chamber 16 is close to the barrel mouth and uses higher temperature cooling water of 35-45℃ for delayed cooling to reduce warping and deformation.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic barrel processing injection molding equipment, comprising a rack (1), the rack (1) is provided with an injection molding machine (2) above, characterized in that: A rotating frame (3) is rotatably connected to the frame (1). A control motor (4) is provided at one end of the frame (1). The control motor (4) cooperates with the rotating frame (3). Inner molds (5) are provided at both the upper and lower ends of the rotating frame (3). A lifting push rod (6) is provided on the frame (1). A lifting frame (7) is provided at the movable end of the lifting push rod (6). An outer mold (8) is provided at the lower end of the lifting frame (7). The injection molding machine (2) is set on the lifting frame (7) and cooperates with the outer mold (8). The outer mold (8) cooperates with the inner mold (5). The rotating frame (3) is equipped with an air pump (9), the inner mold (5) has an air cavity (10) inside, the outer end of the inner mold (5) has an air hole (11) connected to the air cavity (10), the air pump (9) cooperates with the air cavity (10), the inner mold (5) is equipped with a control push rod (12), the movable end of the control push rod (12) is equipped with a movable plate (13), and the movable plate (13) cooperates with the air hole (11).

2. The injection molding apparatus for processing plastic drums according to claim 1, characterized in that: The inner mold (5) and the outer mold (8) are each provided with a first cooling chamber (14), a second cooling chamber (15) and a third cooling chamber (16). The first cooling chamber (14) is located near the bottom of the barrel, the second cooling chamber (15) is located near the body of the barrel, and the third cooling chamber (16) is located near the mouth of the barrel. The first cooling chamber (14), the second cooling chamber (15) and the third cooling chamber (16) are independently provided.

3. The injection molding apparatus for processing plastic drums according to claim 2, characterized in that: Both the inner mold (5) and the outer mold (8) are provided with water guide pipes (17), and the water guide pipes (17) on the inner mold (5) and the outer mold (8) are provided with three sets, which are respectively matched with the first cooling chamber (14), the second cooling chamber (15) and the third cooling chamber (16). The water guide pipe (17) includes an inlet pipe (18) and an outlet pipe (19).

4. The injection molding apparatus for processing plastic drums according to claim 1, characterized in that: A collection box (20) is provided below the rotating frame (3), and a moving wheel (21) is provided at the lower end of the collection box (20).

5. The injection molding apparatus for processing plastic drums according to claim 4, characterized in that: The frame (1) is fixedly connected to a limiting frame (22) at one end and rotatably connected to a shielding frame (23) at the other end. Both the limiting frame (22) and the shielding frame (23) are in conjunction with the collection box (20).

6. The injection molding apparatus for processing plastic drums according to claim 1, characterized in that: The inner side of the frame (1) is provided with a guide ring (24), and the lower end of the lifting frame (7) is provided with a guide rod (25). The guide rod (25) and the guide ring (24) are in sliding cooperation.

7. The injection molding apparatus for processing plastic drums according to claim 1, wherein: The movable plate (13) has a closed ring (26) on its side. The radius of the closed ring (26) is smaller than the radius of the air cavity (10), but larger than the radius of the air hole (11).

8. The injection molding apparatus for processing plastic drums according to claim 7, characterized in that: The inner side of the air hole (11) and the lower side of the movable plate (13) are both sloped.

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