Preheating treatment equipment convenient for plastic packaging

Abstract

The utility model discloses preheating treatment equipment facilitating plastic packaging, and relates to the technical field of preheating equipment, the preheating treatment equipment comprises an unwinding assembly used for feeding products to a preheating assembly, the unwinding assembly comprises an unwinding frame, and an unwinding roller used for containing coiled products is rotationally arranged on the unwinding frame; the preheating assembly comprises a preheating frame, a preheating barrel capable of being heated is arranged on the preheating frame, the preheating barrel is driven by a third power unit arranged on the preheating frame to rotate, a plurality of cloth guide rollers are arranged on the preheating frame in the circumferential direction of the preheating barrel at intervals, and pressing cloth is wound around the cloth guide rollers. The pressing cloth is used for extruding a product on the preheating cylinder; the winding assembly comprises a winding frame, and a winding roller used for winding the preheated product is rotationally arranged on the winding frame. Therefore, the problems existing in solid waste treatment bag packaging are solved, the packaging efficiency of solid waste treatment bag products is improved, the packaging fitting degree is improved, packaging space waste is reduced, and the packaging cost is reduced.

Description

Technical Field

[0001] This application relates to the field of preheating equipment technology, and in particular to a preheating treatment device for easy plastic packaging. Background Technology

[0002] Solid waste treatment bags are chemical and dust resistant waste treatment products, generally used for the treatment of solid waste (such as abandoned pipes), and are usually made of tough PE material.

[0003] After solid waste treatment bags (referred to as products) are manufactured, they are usually rolled up and packaged into boxes for easy transportation and sales. At room temperature, PE plastic rolls are round and relatively tough, while packaging boxes are often rectangular. The rolled products cannot be placed well inside the packaging box and cannot be fully filled, making packaging inconvenient and wasting packaging space.

[0004] PE material has good thermoplasticity, which can be preheated before being rolled up. This reduces its toughness, making it easier to put into the packaging box. Appropriate pressure can also be applied to shape it well, allowing it to fill the entire packaging box, thus improving packaging efficiency, packaging fit, reducing packaging space waste, and lowering packaging costs. Therefore, a preheating device is needed to preheat solid waste treatment bags before packaging them into boxes. Utility Model Content

[0005] To address the aforementioned problems, improve the packaging efficiency of solid waste treatment bags, enhance packaging fit, reduce packaging space waste, and lower packaging costs, this application provides a preheating treatment device for easy plastic packaging.

[0006] The technical solution provided in this application for a preheating treatment device for easy plastic packaging adopts the following technical solution.

[0007] A preheating treatment device for easy plastic packaging includes:

[0008] An unwinding assembly is used to feed products to a preheating assembly. The unwinding assembly includes an unwinding frame, on which an unwinding roller for placing rolled products is rotatably disposed.

[0009] A preheating assembly includes a preheating frame with a heatable preheating cylinder mounted on it. The preheating cylinder is rotated by a third power unit mounted on the preheating frame. Several guide rollers are spaced apart along the circumference of the preheating cylinder on the preheating frame, and a pressure cloth is wound around the guide rollers to press the product onto the preheating cylinder.

[0010] A winding assembly, the winding assembly including a winding frame, on which a winding roller for winding a preheated product is rotatably mounted.

[0011] By adopting the above technical solution, the unwinding component enables the unwinding of rolled products for feeding into the preheating equipment; the preheating component allows the product to be evenly pressed onto the preheating cylinder by the pressure cloth, and as the preheating cylinder rotates, the product is continuously conveyed and heated by the preheating cylinder, thus completing the preheating of the product; the winding component allows the preheated product to be wound into a roll, facilitating product packaging and transportation.

[0012] Optionally, the unwinding frame is provided with an unwinding block, the unwinding block is provided with an unwinding groove, the unwinding roller is disposed in the unwinding groove, and the unwinding roller is driven to rotate by a first power unit disposed on the unwinding frame.

[0013] By adopting the above technical solution, the unwinding groove on the unwinding block can be used to place the unwinding roller, which is driven to rotate by the first power unit. In conjunction with the rotation of the preheating cylinder, the unwinding roller is driven to rotate, releasing the rolled product.

[0014] Optionally, the preheating equipment for easy plastic packaging also includes an intermediate conveying assembly, which includes an intermediate conveying frame with a plurality of guide rollers spaced apart on the intermediate conveying frame.

[0015] By adopting the above technical solution and setting up an intermediate conveying component for product guidance, it can play a guiding and conveying role between the unwinding component and the preheating component.

[0016] Optionally, a pressure roller assembly is provided at the rear end of the intermediate conveyor frame. The pressure roller assembly includes two pressure rollers, which are rotatably mounted on a pressure roller rotating seat. The pressure roller rotating seat is slidably mounted on a pressure roller slide block, which is mounted on the intermediate conveyor frame. An adjusting screw is provided on the pressure roller slide block along the sliding direction of the pressure roller rotating seat. The adjusting screw is threadedly engaged with the pressure roller slide block. One end of the adjusting screw is axially fixed and circumferentially rotated with the pressure roller rotating seat on one of the pressure rollers. The other end of the adjusting screw is provided with a rotating disk. The other pressure roller is driven to rotate by a second power unit mounted on the intermediate conveyor frame.

[0017] By adopting the above technical solution and setting the pressure roller assembly, the product can be pre-flattened, making the product surface more uniform and flat, ensuring that the product can be heated more evenly during preheating, which is conducive to ensuring the quality of the preheated product; by adjusting the screw setting, rotating the rotating disk can adjust the distance between the two pressure rollers, which facilitates the passage of the product during feeding and the adjustment of the product extrusion pressure during operation.

[0018] Optionally, the intermediate conveying assembly further includes an extended conveyor frame, which is disposed between the intermediate conveyor frame and the preheating frame, and a plurality of extended guide rollers are spaced apart on the extended conveyor frame.

[0019] By adopting the above technical solution and extending the conveyor frame, a certain distance can be maintained between the preheating component and the intermediate conveyor frame 5, which is beneficial for guiding the product when it is wrapped around the preheating cylinder.

[0020] Optionally, the intermediate conveyor is equipped with an encoder for measuring the length of the product.

[0021] Optionally, a pressing roller is provided below the preheating cylinder, and the bottom end of the pressing cloth is wrapped around the pressing roller. The pressing roller is driven to rotate by a fifth power unit provided on the preheating frame.

[0022] By adopting the above technical solution, the fifth power unit drives the active roller of the pressing cloth to rotate, which in turn drives the pressing cloth to rotate, and thus can match and rotate synchronously with the preheating cylinder to ensure good pressing of the product.

[0023] Optionally, the guide roller is rotatably mounted on the guide roller rotating seat, and a guide roller slide seat corresponding to the number of guide rollers is provided on the preheating frame. The guide roller rotating seat is slidably mounted on the guide roller slide seat along the direction of approaching or moving away from the preheating cylinder. A fourth power unit is provided on the guide roller slide seat to drive the guide roller rotating seat to slide.

[0024] By adopting the above technical solution, through the setting of the guide roller slide, the fourth power unit can drive the guide roller to move in the direction of approaching or moving away from the preheating cylinder, which can drive the outer ring of the pressing cloth to expand outward, avoid contact with the inner ring of the pressing cloth, and at the same time adjust the tightness of the pressing cloth.

[0025] Optionally, the preheating frame is provided with a tensioning assembly, which includes a tensioning fixed roller disposed on the preheating frame and located above one side of the preheating cylinder. The preheating frame is also provided with a tensioning moving roller, which is driven and slidably disposed by a sixth power unit disposed on the preheating frame.

[0026] By adopting the above technical solution, the tensioning fixed roller can play a supporting and tensioning role for the pressing cloth through the setting of the tensioning component. The sixth power unit drives the tensioning moving roller to move, which can move closer to or away from the tensioning fixed roller, or closer to or away from the preheating cylinder, thereby realizing the adjustment of the tension of the pressing cloth and ensuring the effective pressing of the pressing cloth on the product.

[0027] Optionally, the take-up roller includes an active take-up roller and a driven take-up roller. The active take-up roller includes an active roller shaft with a hand crank at its outer end and a plurality of connecting cylinders at its inner end. The driven take-up roller includes a driven roller shaft with a number of connecting rods at its inner end equal to the number of connecting cylinders. The connecting rods are inserted into the connecting cylinders. The active roller shaft and the driven roller shaft are rotatably mounted on the take-up frame.

[0028] By adopting the above technical solution, after the connecting rod is inserted into the connecting cylinder, the active winding roller and the driven winding roller can be assembled together. After assembly, the winding operation can be carried out by manually rotating the hand crank. After the product is wound up, the active winding roller and the driven winding roller can be separated, making it easy to unload the rolled product from the winding roller.

[0029] In summary, this application includes at least the following beneficial effects:

[0030] 1. This application, through the setting of the unwinding component, enables the unwinding of rolled products for feeding into the preheating equipment; through the setting of the preheating component, the product can be evenly pressed onto the preheating cylinder by the pressure cloth, and as the preheating cylinder rotates, the product is continuously conveyed and heated by the preheating cylinder, thus completing the preheating of the product; through the setting of the winding component, the preheated product can be wound into a roll. After preheating, the product is conducive to shaping, improving the packaging fit, reducing packaging space waste, and reducing packaging costs.

[0031] 2. By setting up the pressure roller assembly, this application can pre-flatten the product, making the product surface more uniform and flat, ensuring that the product can be heated more evenly during preheating, which is conducive to ensuring the quality of the preheated product; by adjusting the screw, rotating the rotating disk can adjust the distance between the two pressure rollers, which facilitates the passage of the product during feeding and the adjustment of the product extrusion pressure during operation.

[0032] 3. Through the setting of the tensioning component, the tensioning fixed roller can play a supporting and tensioning role for the pressing cloth. The sixth power unit drives the tensioning moving roller to move closer to or further away from the tensioning fixed roller, and also closer to or further away from the preheating cylinder, thereby realizing the adjustment of the tension of the pressing cloth and ensuring the effective pressing of the pressing cloth on the product.

[0033] 4. The winding roller of this application includes an active winding roller and a driven winding roller. After the connecting rod is inserted into the connecting cylinder, the active winding roller and the driven winding roller can be assembled together. After assembly, the winding operation can be carried out by manually rotating the hand crank. After the product is wound up, the active winding roller and the driven winding roller can be separated to facilitate the unloading of the rolled product from the winding roller. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a preheating treatment device for easy plastic packaging.

[0036] Figure 2 This is a schematic diagram of a preheating treatment device for easy plastic packaging from another perspective.

[0037] Figure 3 This is a cross-sectional side view diagram of a preheating treatment equipment for easy plastic packaging.

[0038] Figure 4 This is a cross-sectional top view schematic diagram of a preheating treatment equipment for easy plastic packaging.

[0039] Figure 5 yes Figure 4 Schematic diagram of the structure in cross section AA along the middle section line.

[0040] Figure 6 This is a schematic diagram of the winding assembly structure.

[0041] Figure 7 This is a schematic diagram of the winding roller structure.

[0042] Explanation of reference numerals in the attached drawings: 1. Unwinding frame; 2. Unwinding block; 3. Unwinding roller; 4. First power unit; 5. Intermediate conveyor frame; 6. Guide roller; 7. Pressure roller; 8. Pressure roller slide; 9. Adjusting screw; 10. Rotary disc; 11. Second power unit; 12. Extended conveyor frame; 13. Extended guide roller; 14. Encoder; 15. Preheating frame; 16. Preheating cylinder; 17. Control cabinet; 18. Third power unit; 19. Guide roller; 20. Pressing cloth; 21. Fourth power unit; 22. Pressing cloth drive roller; 23. Fifth power unit; 24. Tensioning frame; 25. Tensioning stationary roller; 26. Tensioning moving roller; 27. Tensioning slide plate; 28. Sixth power unit; 29. ​​Rewinding frame; 30. Driven roller shaft; 31. Hand crank; 32. Connecting cylinder; 33. Driven roller shaft; 34. Connecting rod; 35. Nut. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] The following is in conjunction with the appendix Figures 1 to 7 This application will be described in further detail.

[0045] This application discloses a preheating treatment device for easy plastic packaging.

[0046] Reference Figures 1 to 7 A preheating treatment device for easy plastic packaging includes: an unwinding assembly, an intermediate conveying assembly, a preheating assembly, and a rewinding assembly.

[0047] The unwinding assembly is used to feed the product to be preheated into the preheating assembly. The unwinding assembly includes an unwinding frame 1, an unwinding roller 3, and a first power unit 4. The unwinding frame 1 has an unwinding block 2 with an unwinding groove. The unwinding roller 3 is disposed within the unwinding groove. The first power unit 4 is mounted on the unwinding frame 1, located below the unwinding roller 3. The first power unit 4 can be a motor-reducer unit, which drives the unwinding roller 3 to rotate via a sprocket and chain transmission. The unwinding groove on the unwinding block 2 allows the unwinding roller 3 to be placed and rotated by the first power unit 4. In conjunction with the rotation of the preheating cylinder 16, the unwinding roller 3 rotates, releasing the rolled product and providing it for preheating.

[0048] The intermediate conveying assembly includes an intermediate conveyor frame 5, on which several guide rollers 6 are spaced apart. This intermediate conveying assembly guides the product and serves as a guide for transporting it between the unwinding assembly and the preheating assembly.

[0049] A pressure roller assembly is provided at the rear end of the intermediate conveyor frame 5. The pressure roller assembly includes two pressure rollers 7. The pressure rollers 7 are rotatably mounted on the pressure roller rotating seat, and the pressure roller rotating seat is slidably mounted on the pressure roller slide seat 8. The two can adopt a sliding cooperation form of slide rail and slider. The pressure roller slide seat 8 is set on the intermediate conveyor frame 5. An adjusting screw 9 is provided on the pressure roller slide seat 8 along the sliding direction of the pressure roller rotating seat. The adjusting screw 9 is threadedly engaged with the pressure roller slide seat 8. One end of the adjusting screw 9 is axially fixed and circumferentially rotated with the pressure roller rotating seat on one of the pressure rollers 7. The other end of the adjusting screw 9 is provided with a rotating disk 10. The other pressure roller 7 is driven to rotate by a second power unit 11 set on the intermediate conveyor frame 5. The second power unit 11 can be a motor reducer unit, driven by a sprocket and chain drive. By setting up the pressure roller assembly, the product can be pre-flattened, making the product surface more uniform and flat, ensuring that the product can be heated more evenly during preheating, which is conducive to ensuring the quality of the preheated product; by adjusting the setting of the screw 9, rotating the rotating disk 10 can adjust the distance between the two pressure rollers 7, which facilitates the passage of the product during feeding and the adjustment of the product extrusion pressure during operation.

[0050] The intermediate conveying assembly also includes an extended conveyor frame 12, with its two ends respectively mounted on the intermediate conveyor frame 5 and the preheating frame 15. Several extended guide rollers 13 are spaced apart on the extended conveyor frame 12. The extended conveyor frame 12 ensures a certain distance is maintained between the preheating assembly and the intermediate conveyor frame 5, and facilitates guidance when the product is wound onto the preheating cylinder 16.

[0051] An encoder 14 for measuring product length is installed on the intermediate conveyor frame 5, which facilitates the measurement of product length.

[0052] The preheating assembly includes a preheating frame 15, a preheating cylinder 16, a third power unit 18, a pressing cloth 20, and several guide rollers 19.

[0053] The preheating frame 15 is the support frame for the preheating component. The preheating cylinder 16 is mounted on the preheating frame 15. The preheating cylinder 16 is heated by electric heating. A control cabinet 17 is installed on the preheating frame 15 on one side of the preheating cylinder 16 to control the electric heating. Heating can be achieved by increasing the temperature of the rotating cylinder by electric heating. The third power unit 18 is installed on the preheating frame 15 and located below the preheating cylinder 16. The third power unit 18 can be a motor reducer unit that drives the preheating cylinder 16 to rotate through a sprocket and chain drive.

[0054] A plurality of guide rollers 19 are spaced apart circumferentially along the preheating cylinder 16 on the preheating frame 15. Pressure cloth 20 is wound around the guide rollers 19, pressing the product against the surface of the preheating cylinder 16. The guide rollers 19 are rotatably mounted on guide roller rotating seats. Guide roller slide seats 20, corresponding in number to the number of guide rollers 19, are provided on the preheating frame 15. The guide roller rotating seats are slidably mounted on the guide roller slide seats 20 in a direction approaching or away from the preheating cylinder 16. The two can be in a sliding engagement form using a slide rail and slider. A fourth power unit 21, which can be a cylinder, is provided on the guide roller slide seats 20 to drive the guide roller rotating seats to slide. Through the arrangement of the guide roller slide seats 20, the fourth power unit 21 can drive the guide rollers 19 to move in a direction approaching or away from the preheating cylinder 16, causing the outer ring of the pressure cloth 20 to expand outward, avoiding contact with the inner ring of the pressure cloth 20, and simultaneously adjusting the tension of the pressure cloth 20.

[0055] A pressing roller 22 is provided below the preheating cylinder 16. The bottom end of the pressing cloth 20 is wrapped around the pressing roller 22. The pressing roller 22 is driven to rotate by the fifth power unit 23 set on the preheating frame 15. The fifth power unit 23 can be a motor reducer unit. It drives the pressing roller 22 to rotate through a sprocket and chain drive. It can be matched with the preheating cylinder 16 to rotate synchronously, ensuring good pressing of the product.

[0056] A tensioning assembly is provided on the preheating frame 15, which includes a tensioning frame 24, a tensioning fixed roller 25, a tensioning moving roller 26, and a sixth power unit 28. The tensioning frame 24 is horizontally positioned on top of the preheating frame 15. The tensioning fixed roller 25 is positioned on the tensioning frame 24, located above one side of the preheating cylinder 16. The tensioning fixed roller 25 can provide support and tension for the pressing cloth 20. There are two tensioning moving rollers 26, spaced apart on the tensioning slide plate 27. A slide rail is provided on the tensioning frame 24, and a slider is provided on the tensioning slide plate 27. The tensioning slide plate 27 is slidably positioned on the tensioning frame 24 via the slide rail and slider. The two tensioning moving rollers 26 are located on the side of the tensioning fixed roller 25 closer to the preheating cylinder 16. The sixth power unit 28 can be a cylinder, which is hinged to the tensioning frame 24. The cylinder extension rod is connected to the tensioning slide plate 27, and the tensioning slide plate 27 is slidably positioned by the sixth power unit 28. By setting up the tensioning assembly, the sixth power unit 28 drives the tensioning moving roller 26 to move closer to or further away from the tensioning fixed roller 25, or closer to or further away from the preheating cylinder 16, thereby realizing the tension adjustment of the pressing cloth 20 and ensuring that the pressing cloth 20 effectively presses the product.

[0057] The winding assembly includes a winding frame 29 and winding rollers. The winding rollers include an active winding roller and a passive winding roller. The active winding roller includes an active roller shaft 30, with a hand crank 31 at its outer end and several connecting cylinders 32 at its inner end. The passive winding roller includes a passive roller shaft 33, with the same number of connecting rods 34 as the connecting cylinders 32 at its inner end. The connecting rods 34 are inserted into the connecting cylinders 32. The active roller shaft 30 and the passive roller shaft 33 are rotatably mounted on the winding frame 29. A nut 35 is screwed into the outer end of the passive winding roller. After the connecting rod 34 is inserted into the connecting cylinder 32, the active winding roller and the driven winding roller can be assembled. After assembly, the winding operation can be carried out by manually rotating the hand crank 31. After the product is wound up, the nut 35 on the driven winding roller can be unscrewed to remove the driven winding roller. In this way, the active winding roller and the driven winding roller can be separated, making it easy to unload the rolled product from the winding roller.

[0058] This application enables the unwinding of rolled products through the setting of the unwinding component, which is then fed into the preheating equipment. Through the setting of the preheating component, the product can be evenly pressed onto the preheating cylinder 16 by the pressure cloth 20. As the preheating cylinder 16 rotates, the product is continuously conveyed and heated by the preheating cylinder 16, thus completing the preheating of the product. Through the setting of the winding component, the preheated product can be wound into a roll, which facilitates the packaging and transportation of the product.

[0059] In the description of this utility model, it should be understood that the terms "below," "rear end," "both ends," "one side," "top," "outer end," "inner side," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In the description of this utility model, unless otherwise specified and limited, it should be noted that the term "connection" should be interpreted broadly. For example, it can refer to a mechanical connection or an electrical connection, or the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0060] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A preheating treatment device for easy plastic packaging, characterized in that, include: An unwinding assembly is used to feed products to a preheating assembly. The unwinding assembly includes an unwinding frame, on which an unwinding roller for placing rolled products is rotatably disposed. A preheating assembly includes a preheating frame with a heatable preheating cylinder mounted on it. The preheating cylinder is rotated by a third power unit mounted on the preheating frame. Several guide rollers are spaced apart along the circumference of the preheating cylinder on the preheating frame, and a pressure cloth is wound around the guide rollers to press the product onto the preheating cylinder. A winding assembly, the winding assembly including a winding frame, on which a winding roller for winding a preheated product is rotatably mounted.

2. The preheating equipment for easy plastic packaging according to claim 1, characterized in that, The unwinding frame is provided with an unwinding block, the unwinding block is provided with an unwinding groove, the unwinding roller is provided in the unwinding groove, and the unwinding roller is driven to rotate by a first power unit provided on the unwinding frame.

3. The preheating equipment for easy plastic packaging according to claim 1, characterized in that, The preheating equipment for easy plastic packaging also includes an intermediate conveying assembly, which includes an intermediate conveying frame with a number of guide rollers spaced apart on the frame.

4. The preheating equipment for easy plastic packaging according to claim 3, characterized in that, A pressure roller assembly is provided at the rear end of the intermediate conveyor frame. The pressure roller assembly includes two pressure rollers, which are rotatably mounted on a pressure roller rotating seat. The pressure roller rotating seat is slidably mounted on a pressure roller slide block, which is mounted on the intermediate conveyor frame. An adjusting screw is provided on the pressure roller slide block along the sliding direction of the pressure roller rotating seat. The adjusting screw is threadedly engaged with the pressure roller slide block. One end of the adjusting screw is axially fixed and circumferentially rotated with the pressure roller rotating seat on one of the pressure rollers. The other end of the adjusting screw is provided with a rotating disk. The other pressure roller is driven to rotate by a second power unit mounted on the intermediate conveyor frame.

5. The preheating equipment for easy plastic packaging according to claim 3, characterized in that, The intermediate conveying assembly also includes an extended conveyor frame, which is disposed between the intermediate conveyor frame and the preheating frame, and a plurality of extended guide rollers are spaced apart on the extended conveyor frame.

6. The preheating equipment for easy plastic packaging according to claim 3, characterized in that, The intermediate conveyor is equipped with an encoder for measuring the length of the product.

7. The preheating equipment for easy plastic packaging according to claim 1, characterized in that, A pressing roller is provided below the preheating cylinder. The bottom end of the pressing cloth is wrapped around the pressing roller. The pressing roller is driven to rotate by a fifth power unit provided on the preheating frame.

8. The preheating equipment for easy plastic packaging according to claim 1, characterized in that, The guide roller is rotatably mounted on the guide roller rotating seat. The preheating frame is provided with guide roller slides corresponding to the number of guide rollers. The guide roller rotating seat is slidably mounted on the guide roller slides along the direction of approaching or moving away from the preheating cylinder. A fourth power unit is provided on the guide roller slides to drive the guide roller rotating seat to slide.

9. The preheating equipment for easy plastic packaging according to claim 1, characterized in that, The preheating frame is equipped with a tensioning assembly, which includes a tensioning fixed roller on the preheating frame. The tensioning fixed roller is located above one side of the preheating cylinder. The preheating frame is also equipped with a tensioning moving roller, which is driven and slidably set by a sixth power unit on the preheating frame.

10. A preheating treatment device for easy plastic packaging according to claim 1, characterized in that, The take-up roller includes an active take-up roller and a driven take-up roller. The active take-up roller includes an active roller shaft with a hand crank at its outer end and a plurality of connecting cylinders at its inner end. The driven take-up roller includes a driven roller shaft with a number of connecting rods at its inner end, the same number as the connecting cylinders. The connecting rods are inserted into the connecting cylinders. The active roller shaft and the driven roller shaft are rotatably mounted on the take-up frame.

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