Container bag film shredding and stretching device

Abstract

The utility model provides a flexible freight bag film shredding and stretching device which comprises a machining base, a stretching assembly is arranged at the top of the machining base, and an adjusting assembly is arranged at the position, on the inner side of the stretching assembly, of the top of the machining base. The stretching assembly comprises a guide roller arranged on the right side of the top of the machining base, and a fixing frame is arranged on the top of the machining base. According to the flexible freight bag film shredding and stretching device, the output end of the driving motor rotates to drive the rotating lead screw to rotate, then two threaded blocks are driven to move, a rotating plate at the bottom of the threaded blocks rotates, a sliding plate is lifted or lowered, the distance between two pressing rollers is adjusted, and therefore the flexible freight bag film shredding and stretching device is convenient to use. And therefore, the two pressing rollers press the thin film to prevent the thin film from being transversely pressed, and the pressing requirements of the thin films with different thicknesses can be met.

Description

Technical Field

[0001] This utility model relates to the field of film cutting and stretching, and in particular to a device for cutting and stretching film for bulk bags. Background Technology

[0002] FIBCs, also known as flexible intermediary bags, ton bags, or space bags, are flexible transport packaging containers, typically made primarily of polypropylene (PP) with the addition of small amounts of stabilizing agents. Some FIBCs are also made from polyester fibers such as polyethylene.

[0003] First, the raw materials are melted and extruded into plastic film using an extruder, then cut into filaments, stretched and heat-set to produce high-strength, low-elongation raw yarn, which is then woven and coated to form a base fabric, and finally sewn with accessories such as straps to form a container bag.

[0004] Cutting and stretching the film for FIBCs (Flexible Intermediate Bulk Containers) is a crucial step in FIBC production. The plastic film raw material is processed into filaments with specific strengths and properties, preparing it for subsequent weaving into the base fabric. Stretching aligns the polymer chains in the plastic film along the stretching direction, improving the filaments' strength, toughness, and abrasion resistance. Application number CN202420445349.5 discloses a cutting and stretching device for extruded plastic film in FIBC production. This device uses a stretching mechanism where the cut film passes between two rotating rollers, which hold it in place. Magnetic attraction through magnetic and iron rings increases the difficulty of roller rotation, thus stretching the film during winding. However, the distance between the two rollers is not adjustable, resulting in poor adaptability when pressing films of different thicknesses. This directly affects the subsequent stretching length, negatively impacting the quality of the finished FIBC.

[0005] Therefore, it is necessary to provide a film cutting and stretching device for bulk bags to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a film cutting and stretching device for FIBCs (Flexible Intermediate Bulk Containers), which solves the problem that some existing film cutting and stretching devices for FIBCs are not easy to adjust the spacing between the rollers during use, resulting in poor adaptability when pressing and stretching films of different thicknesses.

[0007] To solve the above-mentioned technical problems, this utility model provides a film cutting and stretching device for container bags, comprising: a processing base, a stretching component disposed on the top of the processing base, and an adjusting component disposed on the top of the processing base and inside the stretching component;

[0008] The stretching assembly includes a guide roller disposed on the top right side of the processing base, a fixed frame disposed on the top of the processing base, and a first pressing roller disposed longitudinally and rotatably on the bottom inner side of the fixed frame.

[0009] The adjustment assembly includes a sliding bar disposed inside the fixed frame, a sliding plate disposed inside the sliding bar that can slide up and down along its height direction, and a second pressing roller disposed inside the sliding plate that can be rotatably mounted longitudinally.

[0010] Preferably, a rotating screw is rotatably provided on the top of the inner side of the fixing frame, and two threaded blocks are provided on the circumferential side of the rotating screw that can move back and forth along its length. A rotating plate is provided on the bottom of each of the two threaded blocks, and the bottom of each of the two rotating plates is rotatably connected to the top of the sliding plate.

[0011] Preferably, a constant speed motor is provided on the inner side of the sliding plate, and the output end of the constant speed motor is fixedly connected to the front end of the second pressing roller.

[0012] Preferably, the front end of the rotating lead screw passes through the inner side of the fixed frame and extends to its front side. A drive motor for driving the rotating lead screw to rotate is provided on the front side of the fixed frame, and the output end of the drive motor is fixedly connected to the front end of the rotating lead screw.

[0013] Preferably, the stretching assembly further includes a heating chamber disposed on the top left side of the processing seat and located on the left side of the fixing frame. Two rotating rods are longitudinally rotatably disposed on the left side of the heating chamber. Pulleys are arranged in an array on the peripheral side of the two rotating rods. A shredding mechanism is disposed on the top of the processing seat and on the side opposite to the guide roller and the fixing frame.

[0014] Preferably, a winding mechanism is provided on the left side of the top of the processing seat and on the left side of the heating chamber.

[0015] Compared with related technologies, the FIBC film cutting and stretching device provided by this utility model has the following advantages:

[0016] This utility model provides a film cutting and stretching device for container bags. The rotation of the output end of the drive motor drives the rotation of the rotating screw, which in turn drives the movement of two threaded blocks, thereby causing the rotating plate at the bottom to rotate and the sliding plate to be raised or lowered. This allows the distance between the two pressing rollers to be adjusted, so that the two pressing rollers can press the film to prevent lateral movement. It can be used to meet the pressing needs of films of different thicknesses. Attached Figure Description

[0017] Figure 1A schematic diagram of a preferred embodiment of a film shredding and stretching device for container bags provided by this utility model;

[0018] Figure 2 for Figure 1 A structural schematic diagram of the left view of the fixing frame shown;

[0019] Figure 3 for Figure 1 The diagram shows the structure of the heating chamber from the left side.

[0020] The following components are labeled in the diagram: 1. Processing seat; 2. Stretching assembly; 21. Guide roller; 22. Fixing frame; 23. First pressing roller; 24. Heating chamber; 25. Rotating rod; 26. Pulley; 27. Shredding mechanism; 28. Winding mechanism; 3. Adjusting assembly; 31. Sliding bar; 32. Sliding plate; 33. Second pressing roller; 34. Rotating screw; 35. Threaded block; 36. Rotating plate; 37. Uniform speed motor; 38. Drive motor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in Figure 1 A schematic diagram of a preferred embodiment of a film shredding and stretching device for container bags provided by this utility model; Figure 2 for Figure 1 A structural schematic diagram of the left view of the fixing frame shown; Figure 3 for Figure 1 The schematic diagram of the left view of the heating chamber shown shows a film cutting and stretching device for bulk bags, including: a processing base 1, a stretching component 2 disposed on the top of the processing base 1, and an adjusting component 3 disposed on the top of the processing base 1 and inside the stretching component 2.

[0023] The stretching assembly 2 includes a guide roller 21 disposed on the top right side of the processing base 1, a fixed frame 22 disposed on the top of the processing base 1, and a first pressing roller 23 disposed longitudinally and rotatably on the bottom of the inner side of the fixed frame 22.

[0024] The first pressing roller 23 is fixed on the inner side of the fixed frame 22. Together with the second pressing roller 33 which can move up and down, it can be adjusted to meet the pressing requirements of films of different thicknesses.

[0025] The adjustment assembly 3 includes a sliding bar 31 disposed inside the fixed frame 22, a sliding plate 32 disposed inside the sliding bar 31 that can slide up and down along its height direction, and a second pressing roller 33 disposed inside the sliding plate 32 that can rotate longitudinally.

[0026] A rotating screw 34 is rotatably mounted on the top of the inner side of the fixed frame 22. Two threaded blocks 35 are mounted on the circumferential side of the rotating screw 34, which can move back and forth along its length. A rotating plate 36 is mounted on the bottom of both threaded blocks 35, and the bottom of both rotating plates 36 is rotatably connected to the top of the sliding plate 32.

[0027] The rotation of the output end of the drive motor 38 drives the rotation of the lead screw 34, which in turn drives the movement of the two threaded blocks 35, thereby causing the rotating plate 36 at its bottom to rotate, raising or lowering the sliding plate 32, thus adjusting the distance between the two pressing rollers.

[0028] A constant speed motor 37 is provided on the inner side of the sliding plate 32, and the output end of the back of the constant speed motor 37 is fixedly connected to the front end of the second pressing roller 33.

[0029] The film is pressed and fixed by two pressing rollers, and the film can be transported to the left at a certain speed by the rotation of the uniform speed motor 37. With the subsequent winding mechanism 28, the film can be stretched.

[0030] The front end of the rotating lead screw 34 passes through the inner side of the fixed frame 22 and extends to its front side. The front side of the fixed frame 22 is provided with a drive motor 38 for driving the rotating lead screw 34 to rotate. The output end of the drive motor 38 is fixedly connected to the front end of the rotating lead screw 34.

[0031] The stretching assembly 2 also includes a heating chamber 24 located on the top left side of the processing seat 1 and on the left side of the fixing frame 22. Two rotating rods 25 are rotatably arranged on the left side of the heating chamber 24. Pulleys 26 are arranged in an array on the circumferential side of the two rotating rods 25. A shredding mechanism 27 is provided on the top of the processing seat 1 and on the side opposite to the guide roller 21 and the fixing frame 22.

[0032] The heating chamber 24 enables better stretching operations, and the rotating rod 25 and pulley 26 allow for the separation of individual shredded films, preventing them from tangling together during winding.

[0033] A winding mechanism 28 is provided on the top left side of the processing base 1 and on the left side of the heating chamber 24.

[0034] The working principle of the FIBC film cutting and stretching device provided by this utility model is as follows:

[0035] Step 1: In use, the film is guided in the forward direction by the guide roller 21, the film is cut into shreds by the shredding mechanism 27, and then the shredded film is passed between the two pressing rollers, inside the heating chamber 24 and inside the pulley 26, and finally fixed on the surface of the winding mechanism 28.

[0036] Step 2: The rotation of the output end of the drive motor 38 drives the rotation of the rotating screw 34, which in turn drives the movement of the two threaded blocks 35, thereby causing the rotating plate 36 at its bottom to rotate, raising or lowering the sliding plate 32, thereby adjusting the distance between the two pressing rollers, and thus causing the two pressing rollers to press the film to prevent slippage.

[0037] Step 3: By starting the rotation of the constant speed motor 37, the film can be transported uniformly to the left at a certain speed. In conjunction with the subsequent winding mechanism 28, the film can be stretched.

[0038] Compared with related technologies, the FIBC film cutting and stretching device provided by this utility model has the following advantages:

[0039] The rotation of the output end of the drive motor 38 drives the rotation of the lead screw 34, which in turn drives the movement of the two threaded blocks 35, thereby causing the rotating plate 36 at its bottom to rotate, raising or lowering the sliding plate 32, thus adjusting the distance between the two pressing rollers. This allows the two pressing rollers to press the film to prevent it from lateral movement, making it suitable for pressing films of different thicknesses.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A film cutting and stretching device for bulk bags, characterized in that, include: A processing base (1) is provided with a tensioning component (2) on its top and an adjusting component (3) is provided on the top of the processing base (1) and inside the tensioning component (2). The stretching assembly (2) includes a guide roller (21) disposed on the top right side of the processing seat (1), a fixing frame (22) is disposed on the top of the processing seat (1), and a first pressing roller (23) is longitudinally rotatably disposed on the bottom of the inner side of the fixing frame (22). The adjustment component (3) includes a sliding bar (31) disposed inside the fixed frame (22), and a sliding plate (32) is disposed inside the sliding bar (31) so that it can slide up and down along its height direction. A second pressing roller (33) is disposed inside the sliding plate (32) so that it can rotate longitudinally.

2. The container bag film cutting and stretching device according to claim 1, characterized in that, A rotating screw (34) is rotatably provided on the top of the inner side of the fixed frame (22). Two threaded blocks (35) are provided on the circumferential side of the rotating screw (34) and can move back and forth along its length. A rotating plate (36) is rotatably provided on the bottom of the two threaded blocks (35). The bottom of the two rotating plates (36) is rotatably connected to the top of the sliding plate (32).

3. The container bag film cutting and stretching device according to claim 1, characterized in that, A constant speed motor (37) is provided on the inner side of the sliding plate (32), and the output end of the constant speed motor (37) is fixedly connected to the front end of the second pressing roller (33).

4. The container bag film cutting and stretching device according to claim 2, characterized in that, The front end of the rotating lead screw (34) passes through the inner side of the fixed frame (22) and extends to its front side. The front side of the fixed frame (22) is provided with a drive motor (38) for driving the rotating lead screw (34) to rotate. The output end of the back of the drive motor (38) is fixedly connected to the front end of the rotating lead screw (34).

5. The container bag film cutting and stretching device according to claim 1, characterized in that, The stretching assembly (2) also includes a heating chamber (24) located on the top left side of the processing seat (1) and on the left side of the fixing frame (22). Two rotating rods (25) are rotatably arranged on the left side of the heating chamber (24). Pulleys (26) are arranged in an array on the circumferential side of the two rotating rods (25). A slicing mechanism (27) is provided on the top of the processing seat (1) and on the side opposite to the guide roller (21) and the fixing frame (22).

6. The container bag film cutting and stretching device according to claim 5, characterized in that, A winding mechanism (28) is provided on the left side of the top of the processing seat (1) and on the left side of the heating chamber (24).

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