Polypropylene extruder for flexible freight bag preparation

Abstract

The utility model relates to a polypropylene extruder for preparing flexible freight bags, which comprises a working table, an extruder main body, a feed hopper and a lifting mechanism, a feeding mechanism is arranged on one side of the lifting mechanism, the feeding mechanism comprises mounting frames, a rotating plate and a discharging box, a rotating shaft is rotatably arranged between the mounting frames, two connecting plates are fixedly arranged on the lower side of the rotating plate, and the discharging box is arranged on the rotating shaft. The connecting plate is fixedly connected with the rotating shaft, a gear is fixedly mounted in the middle of the rotating shaft, an electric telescopic rod is fixedly mounted at the bottom of the inner wall of the mounting frame, and a toothed plate is fixedly mounted at the output end of the electric telescopic rod and meshed with the gear. According to the utility model, through the lifting mechanism and the feeding mechanism, raw materials can be automatically fed into the feed hopper when being fed, so that the extruder is more convenient to feed, the occupied space is smaller, the space occupation of a production workshop is reduced, and the practicability and the convenience of the extruder in use are improved.

Description

Technical Field

[0001] This utility model relates to the field of container bag manufacturing technology, and in particular to a polypropylene extruder for container bag manufacturing. Background Technology

[0002] FIBCs, also known as bulk bags, are flexible transport packaging containers with advantages such as moisture resistance, dust protection, radiation resistance, and robust safety. They also possess sufficient structural strength. Because FIBCs are easy to load, unload, and handle, significantly improving efficiency, their development has been rapid in recent years. FIBCs are generally made of polyester fibers such as polypropylene and polyethylene.

[0003] Currently, the typical production process for FIBCs (Flexible Intermediate Bulk Containers) is as follows: raw materials → plastic drawing machine → winding machine → circular loom → laminating machine → printing machine → bag cutting machine → bag placing frame → sewing machine → packing machine → leaving the factory. After the raw materials enter the extruder, they are heated externally at 190-250°C and sheared by the screw and barrel. Under almost complete plasticization, the material is extruded quantitatively and under constant pressure through the mold to form a molten film. After cooling, it enters the drawing equipment to finally form flat filaments.

[0004] Existing extruders have the following drawbacks in practical use:

[0005] Existing extruders require manual addition of raw materials. However, since extruders are usually quite tall and the feed port is typically located at the top, manual addition is time-consuming, labor-intensive, and poses certain safety risks. Using a conveyor belt, on the other hand, requires a large amount of space and is not conducive to the layout of the production workshop. Utility Model Content

[0006] In view of the existing technology, the addition of raw materials to the existing extruders requires manual addition. However, since the extruder is usually quite tall and the feeding port is usually located at the top of the extruder, manual addition is time-consuming, labor-intensive, and poses certain safety risks. On the other hand, using a conveyor belt takes up a lot of space, which is not conducive to the layout of the production workshop. Therefore, this utility model provides a polypropylene extruder for the preparation of bulk bags.

[0007] The technical solution adopted by this utility model is: a polypropylene extruder for preparing bulk bags, including a worktable, an extruder body, a feeding hopper and a lifting mechanism. A feeding mechanism is provided on one side of the lifting mechanism. The feeding mechanism includes a mounting frame, a rotating plate and a discharge box. A rotating shaft is rotatably installed between the mounting frames. Two connecting plates are fixedly installed on the lower side of the rotating plate. The connecting plates are fixedly connected to the rotating shaft. A gear is fixedly installed in the middle of the rotating shaft. An electric telescopic rod is fixedly installed at the bottom of the inner wall of the mounting frame. A toothed plate is fixedly installed at the output end of the electric telescopic rod. The toothed plate meshes with the gear. The discharge box is fixedly installed on the upper side of the rotating plate.

[0008] Furthermore, two support pads are fixedly installed on the lower side of the rotating plate, and both support pads are in contact with the upper side of the mounting frame.

[0009] Furthermore, the lifting mechanism includes a U-shaped support frame, a threaded rod, and a drive motor. The U-shaped support frame is fixedly installed on one side of the workbench. Slide grooves are provided on both sides of the inner wall of the U-shaped support frame. The threaded rod is rotatably installed in one of the slide grooves. The drive motor is fixedly installed on the upper side of the U-shaped support frame. The output end of the drive motor is fixedly connected to one end of the threaded rod. A threaded slider is threadedly installed on the periphery of the threaded rod.

[0010] Furthermore, a guide slide rod is fixedly installed in another of the slide grooves, and a guide slider is slidably installed in the slide grooves, with the guide slider slidably connected to the guide slide rod.

[0011] Furthermore, the mounting frame is located between the U-shaped support frames, and the threaded slider and the guide slider are respectively fixedly connected to both sides of the mounting frame.

[0012] Furthermore, the extruder body is located on the upper side of the worktable, the feed hopper is located on the upper side of the extruder body, and a guide plate is provided on the upper side of the feed hopper, the guide plate corresponding to the discharge box.

[0013] Furthermore, a discharge port is provided on one side of the feeding box, and an extrusion mold is provided on the other side of the discharge port. A fixing bolt is provided between the extrusion mold and the discharge port.

[0014] The beneficial effects of this utility model are:

[0015] This invention, through its lifting and feeding mechanisms, can automatically feed raw materials into the hopper, making the feeding operation of the extruder more convenient and requiring less space, thus reducing the space occupied in the production workshop and improving the practicality and convenience of the extruder.

[0016] Secondly, this invention, through the extrusion die and discharge port, allows for easy replacement of the extrusion die when producing different types of bulk bags with varying film sizes, enabling the extruder to be adapted to different size requirements and thus improving its applicability. Attached Figure Description

[0017] Figure 1 This is a front perspective view of the present invention;

[0018] Figure 2 This is a rear-view perspective view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the U-shaped support frame of this utility model;

[0020] Figure 4 This is a three-dimensional view of the feeding mechanism of this utility model.

[0021] The following are labeled in the diagram: 1. Workbench; 2. Extruder body; 3. Feed hopper; 4. Lifting mechanism; 5. Feeding mechanism; 6. U-shaped support frame; 7. Slide groove; 8. Threaded rod; 9. Drive motor; 10. Guide slide rod; 11. Threaded slider; 12. Mounting frame; 13. Electric telescopic rod; 14. Toothed plate; 15. Rotating shaft; 16. Gear; 17. Connecting plate; 18. Rotating plate; 19. Support pad; 20. Discharge box; 21. Discharge port; 22. Extrusion die; 23. Fixing bolt; 24. Guide slider; 25. Guide plate. Detailed Implementation

[0022] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation 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.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following is in conjunction with the appendix Figures 1-4 The present invention will be further described below.

[0025] To address the problems existing in the background art, this application proposes the following technical solution: a polypropylene extruder for preparing container bags.

[0026] The specific technical solution includes a workbench 1, an extruder body 2, a feed hopper 3, and a lifting mechanism 4. A feeding mechanism 5 is provided on one side of the lifting mechanism 4. The feeding mechanism 5 includes a mounting frame 12, a rotating plate 18, and a discharge box 20. A rotating shaft 15 is rotatably mounted between the mounting frames 12. Two connecting plates 17 are fixedly mounted on the lower side of the rotating plate 18. The connecting plates 17 are fixedly connected to the rotating shaft 15. A gear 16 is fixedly mounted in the middle of the rotating shaft 15. An electric telescopic rod 13 is fixedly mounted on the bottom of the inner wall of the mounting frame 12. A toothed plate 14 is fixedly mounted on the output end of the electric telescopic rod 13. The toothed plate 14 meshes with the gear 16. The discharge box 20 is fixedly mounted on the upper side of the rotating plate 18. Two support pads 19 are fixedly mounted on the lower side of the rotating plate 18. The support pads 19 are rubber pads. When the rotating plate 18 drives the discharge box 20 to reset, it can improve the buffer and improve the service life of the rotating plate 18 and the discharge box 20. Both support pads 19 are in contact with the upper side of the mounting frame 12.

[0027] Reference Figure 3 and Figure 4 As shown, the lifting mechanism 4 includes a U-shaped support frame 6, a threaded rod 8, and a drive motor 9. The U-shaped support frame 6 is fixedly installed on one side of the workbench 1. Slide grooves 7 are provided on both sides of the inner wall of the U-shaped support frame 6. The threaded rod 8 is rotatably installed in one of the slide grooves 7. The drive motor 9 is fixedly installed on the upper side of the U-shaped support frame 6. The output end of the drive motor 9 is fixedly connected to one end of the threaded rod 8. A threaded slider 11 is threadedly installed on the periphery of the threaded rod 8. A guide rod 10 is fixedly installed in the other slide groove 7. A guide slider 24 is slidably installed in the slide groove 7. Through the guide slider 24 and the guide rod 10, the mounting frame 12 can be guided when it moves up and down, so that the mounting frame 12 can move up and down stably. The guide slider 24 is slidably connected to the guide rod 10. The mounting frame 12 is located between the U-shaped support frames 6. The threaded slider 11 and the guide slider 24 are fixedly connected to both sides of the mounting frame 12, respectively.

[0028] Reference Figure 1 As shown, the extruder body 2 is located on the upper side of the worktable 1, and the feed hopper 3 is located on the upper side of the extruder body 2. A guide plate 25 is provided on the upper side of the feed hopper 3, and the guide plate 25 corresponds to the discharge box 20. A discharge port 21 is provided on one side of the discharge box 20, and an extrusion die 22 is provided on one side of the discharge port 21. A fixing bolt 23 is provided between the extrusion die 22 and the discharge port 21. By removing the fixing bolt 23, the extrusion die 22 can be removed. After installing a new extrusion die 22, it can be fixed with the fixing bolt 23 to complete the replacement of the appropriate die. A sealing gasket is provided between the extrusion die 22 and the discharge port 21.

[0029] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview:

[0030] In use, when adding raw materials, place the raw materials into the feeding box 20, and then start the drive motor 9. The drive motor 9 can drive the threaded rod 8 to rotate, and the rotation of the threaded rod 8 can drive the threaded slider 11 to move up and down. The movement of the threaded slider 11 can drive the mounting frame 12 to move up and down along the U-shaped support frame 6. The movement of the mounting frame 12 can drive the rotating plate 18 and the feeding box 20 to move up and down. When the feeding box 20 moves to the top, start the electric telescopic rod 13, which will drive the toothed plate 14 to move upward. The upward movement of the toothed plate 14 can drive the rotating plate 18 and the feeding box 20 to move up and down. The rotating gear 16 rotates, which drives the rotating shaft 15 to rotate. The rotating shaft 15 rotates, which in turn drives the rotating plate 18 to rotate. The rotating plate 18 rotates axially with the rotating shaft 15, causing the feeding box 20 to rotate with the rotating plate 18. The feeding box 20 gradually tilts, and when the feeding box 20 flips over, it can pour the raw material onto the guide plate 25. The guide plate 25 guides the raw material into the feed hopper 3, and then into the extruder body 2. Then, the above steps are reversed to reset the feeding box 20, and the feeding operation can be carried out again.

[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A polypropylene extruder for preparing bulk bags, characterized in that, The device includes a workbench (1), an extruder body (2), a feed hopper (3), and a lifting mechanism (4). A feeding mechanism (5) is provided on one side of the lifting mechanism (4). The feeding mechanism (5) includes a mounting frame (12), a rotating plate (18), and a discharge box (20). A rotating shaft (15) is rotatably installed between the mounting frames (12). Two connecting plates (17) are fixedly installed on the lower side of the rotating plate (18). The connecting plates (17) are fixedly connected to the rotating shaft (15). A gear (16) is fixedly installed in the middle of the rotating shaft (15). An electric telescopic rod (13) is fixedly installed at the bottom of the inner wall of the mounting frame (12). A toothed plate (14) is fixedly installed at the output end of the electric telescopic rod (13). The toothed plate (14) meshes with the gear (16). The discharge box (20) is fixedly installed on the upper side of the rotating plate (18).

2. The polypropylene extruder for preparing FIBCs according to claim 1, characterized in that, Two support pads (19) are fixedly installed on the lower side of the rotating plate (18), and both support pads (19) are in contact with the upper side of the mounting frame (12).

3. The polypropylene extruder for preparing container bags according to claim 1, characterized in that, The lifting mechanism (4) includes a U-shaped support frame (6), a threaded rod (8), and a drive motor (9). The U-shaped support frame (6) is fixedly installed on one side of the workbench (1). Slide grooves (7) are provided on both sides of the inner wall of the U-shaped support frame (6). The threaded rod (8) is rotatably installed in one of the slide grooves (7). The drive motor (9) is fixedly installed on the upper side of the U-shaped support frame (6). The output end of the drive motor (9) is fixedly connected to one end of the threaded rod (8). A threaded slider (11) is threadedly installed on the periphery of the threaded rod (8).

4. The polypropylene extruder for preparing container bags according to claim 3, characterized in that, Another guide slide rod (10) is fixedly installed in the groove (7), and a guide slider (24) is slidably installed in the groove (7), and the guide slider (24) is slidably connected to the guide slide rod (10).

5. A polypropylene extruder for preparing FIBCs according to claim 4, characterized in that, The mounting frame (12) is located between the U-shaped support frame (6), and the threaded slider (11) and the guide slider (24) are fixedly connected to both sides of the mounting frame (12).

6. The polypropylene extruder for preparing FIBCs according to claim 1, characterized in that, The extruder body (2) is located on the upper side of the worktable (1), the feed hopper (3) is located on the upper side of the extruder body (2), and a guide plate (25) is provided on the upper side of the feed hopper (3). The guide plate (25) corresponds to the discharge box (20).

7. A polypropylene extruder for preparing container bags according to claim 6, characterized in that, The feeding box (20) has a discharge port (21) on one side, and an extrusion mold (22) is provided on one side of the discharge port (21). A fixing bolt (23) is provided between the extrusion mold (22) and the discharge port (21).

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