Automatic slitting and rewinding machine for plastic film

Abstract

The utility model discloses an automatic slitting rewinding machine for plastic film relates to slitting machine technical field. The automatic slitting rewinding machine for plastic film, including base, the base is fixedly installed with unwinding seat, the base is fixedly installed with the prop, the prop upper end is fixedly installed with the top plate, the top plate is fixedly installed with the hydraulic rod, the output of hydraulic rod is fixedly installed with the support, a plurality of tool holders are fixedly installed on the support, and the cutter is threadedly connected in the tool holder, in the slitting link, the top plate supported by the prop provides the stable mounting point for the hydraulic rod, and the hydraulic rod drives the support to slide along the guide rail on the prop and the sliding slot of support itself stably, and the limiting plate on cooperation guide rail can accurate control cutter downstroke stroke, and simultaneously, the threaded connection mode of tool holder and cutter makes the installation, replacement and position adjustment of cutter more convenient, can flexible adaptation different width's slitting demand, has improved the versatility of device.

Description

Technical Field

[0001] This utility model relates to the field of slitting machine technology, and in particular to an automatic slitting and rewinding machine for plastic film. Background Technology

[0002] In many industries such as packaging, printing, and electronics, the slitting and rewinding of plastic film is a key pre-processing step. Its core requirement is to process wide rolls of plastic film into narrow rolls that meet the requirements of subsequent production. As the core equipment for realizing this process, the automatic slitting and rewinding machine directly affects the production efficiency and product quality of enterprises.

[0003] As the industry's demand for plastic film processing continues to diversify, the market has placed higher demands on the adaptability and debugging efficiency of slitting and rewinding machines. In particular, when dealing with slitting tasks of plastic films of different widths and thicknesses, the equipment needs to be able to quickly complete the replacement of blades and the adjustment of spacing to meet the needs of multi-specification production. However, existing plastic film slitting and rewinding machines suffer from numerous inconveniences in blade adjustment and replacement, becoming a major bottleneck restricting the improvement of equipment operating efficiency and versatility. Specifically, existing slitting machines mostly use fixed installation structures for their blades, with multiple fastening components connecting and fixing the blades to the mounting base. When it is necessary to replace different models of blades to adapt to plastic films of different thicknesses, operators need to use special tools to disassemble the fastening components one by one. This is not only cumbersome but also time-consuming, leading to increased equipment downtime and severely impacting continuous production efficiency. Regarding blade spacing adjustment, existing equipment's adjustment mechanism lacks precise guidance and positioning structures. Adjustment requires repeated manual measurement and trial cutting to determine the blade position, which is not only difficult to operate but also makes it hard to ensure the consistency of the spacing between multiple blades. This can easily lead to excessive width deviations in the narrow plastic film after slitting, increasing the defect rate. For multi-specification, small-batch production tasks, the high downtime costs and low operating efficiency caused by frequent blade adjustments and replacements further reduce the economic efficiency of enterprises. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an automatic slitting and rewinding machine for plastic film, which can solve the problem that it is inconvenient to adjust and replace the blades in the existing slitting machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic slitting and rewinding machine for plastic film, including a base, wherein a roll unwinding seat is fixedly installed on the base, a rotating rod is rotatably installed on the roll unwinding seat, and a roll unwinding roller is fixedly installed on the rotating rod; A guide seat is fixedly installed on the base, a lower guide roller is rotatably installed on the guide seat, an upper guide roller is rotatably installed on the guide seat above the lower guide roller, a support column is fixedly installed on the base, a top plate is fixedly installed on the upper end of the support column, a hydraulic rod is fixedly installed on the top plate, a support is fixedly installed on the output end of the hydraulic rod, and several tool holders are fixedly installed on the support, with cutting blades connected to the internal threads of the tool holders. The support column is fixedly installed with a guide rail, and the two ends of the support are provided with sliding grooves. The two ends of the support are slidably connected to the guide rail through the two sliding grooves, and a limit plate is fixedly installed on the guide rail. Several take-up seats are fixedly installed on the base. A rotating shaft is rotatably installed on the take-up seats. Several take-up rollers are fixedly installed on the rotating shaft. A stepper motor is fixedly installed on the base. A drive pulley is fixedly installed on the output shaft of the stepper motor. A driven pulley is fixedly installed at one end of the rotating shaft. A belt is used to drive the drive pulley and the driven pulley.

[0006] Preferably, the unwinding roller is provided with annular retaining edges at both ends, the annular retaining edges are integrally formed with the unwinding roller, and the inner diameter of the annular retaining edges is adapted to the outer diameter of the unwinding roller.

[0007] Preferably, the surfaces of both the upper and lower guide rollers are provided with an anti-slip and wear-resistant layer, which is a polyurethane coating.

[0008] Preferably, the support has several threaded holes, and the bottom of the tool holder is provided with a connecting screw that matches the threaded holes. The tool holder is threadedly fixed to the support by the connecting screw, and the distance between adjacent tool holders can be adjusted or disassembled.

[0009] Preferably, the guide rail is a rectangular guide rail, the inner wall of the slide groove is provided with a lubrication layer, the lubrication layer is a graphite coating, and the limiting plate is fixedly connected to the guide rail by adjusting bolts.

[0010] Preferably, the number of take-up rollers matches the number of cutter holders, and the outer surface of the take-up rollers is provided with an elastic wrapping layer, which is made of silicone.

[0011] Preferably, both the driving pulley and the driven pulley are synchronous pulleys, the belt is a synchronous belt, and the inner surface of the synchronous belt is provided with tooth grooves that are adapted to the teeth of the pulleys.

[0012] Preferably, the unwinding seat is provided with a bearing seat, and the rotating rod is rotatably connected to the bearing seat through a deep groove ball bearing. The outer ring of the deep groove ball bearing is interference-fitted with the bearing seat, and the inner ring is interference-fitted with the rotating rod.

[0013] Preferably, there are two support columns, symmetrically arranged on both sides of the base, and the two ends of the top plate are welded and fixed to the upper ends of the two support columns respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This automatic slitting and rewinding machine for plastic film uses a top plate supported by a column to provide a stable mounting point for the hydraulic rod during the slitting process. The hydraulic rod drives the support to slide smoothly along the guide rail on the column and the slide groove on the support itself, ensuring the stability of the cutter's downward movement. With the help of the limit plate on the guide rail, the downward stroke of the cutter can be precisely controlled to avoid damage or incomplete slitting caused by excessive downward movement of the cutter. At the same time, the threaded connection between the cutter holder and the cutter makes the installation, replacement and position adjustment of the cutter more convenient, and can flexibly adapt to the slitting requirements of different widths, improving the versatility of the device.

[0015] 2. This plastic film uses an automatic slitting and rewinding machine. In the winding process, the winding seat provides reliable support for the rotating shaft. The stepper motor drives the rotating shaft and winding roller to rotate synchronously through the transmission cooperation of the active pulley, belt, and driven pulley. This allows the slit narrow-width plastic film to be wound onto the winding roller accordingly. The stability of the transmission process ensures that the winding speed matches the unwinding and slitting speed, avoiding film stretching or accumulation. This results in a flat and tight end face of the wound plastic film, improving the quality of the finished product. In addition, multiple winding rollers can simultaneously wind multiple sets of narrow-width film after slitting, significantly improving work efficiency compared to single-set processing. At the same time, the entire operation process is completed automatically through the mechanical structure, reducing human error caused by manual operation, resulting in stronger consistency in the size of the finished product and reducing the defect rate. Moreover, each machine only requires a small number of personnel for monitoring and auxiliary operation, effectively reducing labor costs and balancing efficiency and economy. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of an automatic slitting and rewinding machine for plastic film according to the present invention; Figure 2 This is a schematic diagram of an automatic slitting and rewinding machine for plastic film according to the present invention; Figure 3 This is a schematic diagram of an automatic slitting and rewinding machine for plastic film according to the present invention; Figure 4 This utility model Figure 4 Enlarged view at point A; Figure 5 This is a cross-sectional schematic diagram of an automatic slitting and rewinding machine for plastic film according to this utility model; Figure 6 This is a cross-sectional schematic diagram of an automatic slitting and rewinding machine for plastic film according to this utility model; Figure 7 This is a cross-sectional schematic diagram of an automatic slitting and rewinding machine for plastic film according to this utility model; Figure 8 This is a cross-sectional schematic diagram of an automatic slitting and rewinding machine for plastic film according to this utility model.

[0017] Reference numerals in the attached diagram: 1. Base; 2. Unwinding seat; 3. Rotating rod; 4. Unwinding roller; 5. Guide seat; 6. Lower guide roller; 7. Upper guide roller; 8. Support column; 9. Top plate; 10. Rewinding seat; 11. Rotating shaft; 12. Rewinding roller; 13. Stepper motor; 14. Belt; 15. Driving pulley; 16. Driven pulley; 17. Hydraulic rod; 18. Support; 19. Knife holder; 20. Cutting knife; 21. Guide rail; 22. Slide groove; 23. Limiting plate. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0020] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Please see Figure 1-8 This utility model provides a technical solution: an automatic slitting and rewinding machine for plastic film, including a base 1, a roll unwinding seat 2 fixedly installed on the base 1, a rotating rod 3 rotatably installed on the roll unwinding seat 2, and a roll unwinding roller 4 fixedly installed on the rotating rod 3; The base 1 provides stable support for the entire device and serves as the installation basis for all components. The unwinding seat 2 is fixed on the base 1 and serves to support the unwinding mechanism. The rotating rod 3 is rotatably mounted on the unwinding seat 2 and provides rotational support for the unwinding roller 4. The unwinding roller 4 is fixed on the rotating rod 3 and is used to mount the original roll of plastic film to be cut. The continuous release of the plastic film is achieved through rotation. A guide seat 5 is fixedly installed on the base 1, a lower guide roller 6 is rotatably installed on the guide seat 5, and an upper guide roller 7 is rotatably installed on the guide seat 5 above the lower guide roller 6. The guide seat 5 is fixed on the base 1 and serves as the mounting carrier for the guide rollers. The lower guide roller 6 and the upper guide roller 7 are rotated and mounted on the guide seat 5 in a corresponding manner. The two form a clamping and guiding channel. When the original roll of plastic film passes through the middle, it can be combed flat to avoid wrinkles and deviations, ensuring that the plastic film enters the subsequent slitting process in a stable posture. A support column 8 is fixedly installed on the base 1. A top plate 9 is fixedly installed on the upper end of the support column 8. A hydraulic rod 17 is fixedly installed on the top plate 9. A support 18 is fixedly installed on the output end of the hydraulic rod 17. Several tool holders 19 are fixedly installed on the support 18. A cutting blade 20 is internally threaded onto the tool holder 19. The support column 8 is fixed on the base 1 to support the top plate 9. The top plate 9 provides an installation and fixing point for the hydraulic rod 17. The hydraulic rod 17 serves as a power source and can drive the support 18 to move up and down. The support 18 is used to install the blade holder 19 to achieve the integrated fixing of multiple cutters 20. The blade holder 19 and the cutter 20 are connected by threads, which facilitates the installation, replacement and position adjustment of the cutter 20. Finally, the cutting action is completed by the downward movement of the cutter 20 and its contact with the plastic film. A guide rail 21 is fixedly installed on the support column 8. Slide grooves 22 are provided at both ends of the support 18. The two ends of the support 18 are slidably connected to the guide rail 21 through the two slide grooves 22. A limit plate 23 is fixedly installed on the guide rail 21. The guide rail 21 is fixed on the support column 8. The support 18 slides with the guide rail 21 through the sliding grooves 22 at both ends, providing precise guidance for the up and down movement of the support 18 and preventing the cutter 20 from deviating during slitting. The limiting plate 23 is fixed on the guide rail 21, which can limit the downward stroke of the support 18 and prevent the cutter 20 from moving too far downward, causing equipment damage or over-slitting. Several take-up seats 10 are fixedly installed on the base 1. A rotating shaft 11 is rotatably installed on the take-up seat 10. Several take-up rollers 12 are fixedly installed on the rotating shaft 11. A stepper motor 13 is fixedly installed on the base 1. A drive pulley 15 is fixedly installed on the output shaft of the stepper motor 13. A driven pulley 16 is fixedly installed at one end of the rotating shaft 11. A belt 14 is connected between the drive pulley 15 and the driven pulley 16. The take-up seat 10 is fixed on the base 1, providing rotational support for the rotating shaft 11. The take-up rollers 12 fixed on the rotating shaft 11 correspond one-to-one with the slit plastic film and are used to wind and roll up the narrow plastic film after slit. The stepper motor 13 serves as the power source for winding. Through the transmission mechanism composed of the driving pulley 15, belt 14 and driven pulley 16, the power is transmitted to the rotating shaft 11, which drives the take-up rollers 12 to rotate synchronously, thereby realizing the orderly winding of the slit plastic film. Working principle: First, load the original roll of plastic film onto the unwinding roller 4. Adjust the positions of the knife holder 19 and the cutter 20 according to the slitting width. Then, manually guide the film through the upper guide roller 7 and the lower guide roller 6 on the guide seat 5. Fix the film end to the take-up roller 12 on the take-up seat 10. After starting the equipment, the stepper motor 13 drives the rotating shaft 11 and the take-up roller 12 to rotate through the driving pulley 15, belt 14, and driven pulley 16. The winding tension causes the unwinding roller 4 to rotate with the rotating rod 3 to unwind the film. After the film is combed by the guide roller, the hydraulic rod 17 on the top plate 9 drives the support 18 to move down along the guide rail 21 of the support column 8. The cutter 20 completes the slitting. The limit plate 23 controls the stroke. After slitting, the narrow film is synchronously wound up by the take-up roller 12. After reaching the standard, stop the machine and remove the finished product to complete the operation.

[0023] During the slitting process, the top plate 9 supported by the support column 8 provides a stable mounting point for the hydraulic rod 17. The hydraulic rod 17 drives the support 18 to slide smoothly along the guide rail 21 on the support column 8 and the slide groove 22 of the support 18 itself, ensuring the stability of the cutter 20 during the downward movement. With the help of the limit plate 23 on the guide rail 21, the downward movement of the cutter 20 can be precisely controlled, avoiding damage or incomplete slitting caused by excessive downward movement of the cutter 20. At the same time, the threaded connection between the cutter holder 19 and the cutter 20 makes the installation, replacement and position adjustment of the cutter 20 more convenient, and can flexibly adapt to the slitting requirements of different widths, improving the versatility of the device. In the winding process, the winding base 10 provides reliable support for the rotating shaft 11. The stepper motor 13 drives the rotating shaft 11 and the winding roller 12 to rotate synchronously through the transmission cooperation of the driving pulley 15, belt 14 and driven pulley 16. This allows the slit narrow plastic film to be wound onto the winding roller 12. The stability of the transmission process ensures that the winding speed matches the unwinding and slitting speed, avoiding film stretching or accumulation. This results in a flat and tight end face of the wound plastic film, improving the quality of the finished product. In addition, multiple winding rollers 12 can simultaneously wind up multiple sets of slit narrow film, significantly improving work efficiency compared to single-set processing. The entire process is completed automatically through mechanical structure, reducing human error caused by manual operation, resulting in stronger consistency in finished product dimensions and a lower defect rate. Furthermore, each machine requires only a small number of personnel for monitoring and auxiliary operation, effectively reducing labor costs and balancing efficiency and economy.

[0024] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An automatic slitting and rewinding machine for plastic film, comprising a base (1), characterized in that: A winding unwinding seat (2) is fixedly installed on the base (1), a rotating rod (3) is rotatably installed on the winding unwinding seat (2), and a winding unwinding roller (4) is fixedly installed on the rotating rod (3). A guide seat (5) is fixedly installed on the base (1), a lower guide roller (6) is rotatably installed on the guide seat (5), an upper guide roller (7) is rotatably installed on the guide seat (5) above the lower guide roller (6), a support column (8) is fixedly installed on the base (1), a top plate (9) is fixedly installed on the upper end of the support column (8), a hydraulic rod (17) is fixedly installed on the top plate (9), a support (18) is fixedly installed on the output end of the hydraulic rod (17), a knife holder (19) is fixedly installed on the support (18), and a cutter (20) is internally threaded onto the knife holder (19). A guide rail (21) is fixedly installed on the support (8), and a sliding groove (22) is provided at both ends of the support (18). The two ends of the support (18) are slidably connected to the guide rail (21) through the two sliding grooves (22). A limit plate (23) is fixedly installed on the guide rail (21). A take-up seat (10) is fixedly installed on the base (1). A rotating shaft (11) is rotatably installed on the take-up seat (10). A take-up roller (12) is fixedly installed on the rotating shaft (11). A stepper motor (13) is fixedly installed on the base (1). A drive pulley (15) is fixedly installed on the output shaft of the stepper motor (13). A driven pulley (16) is fixedly installed at one end of the rotating shaft (11). A belt (14) is connected between the drive pulley (15) and the driven pulley (16).

2. The automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: The unwinding roller (4) has annular retaining edges at both ends. The annular retaining edges are integrally formed with the unwinding roller (4), and the inner diameter of the annular retaining edges is adapted to the outer diameter of the unwinding roller (4).

3. The automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: The surfaces of the upper guide roller (7) and the lower guide roller (6) are both provided with anti-slip and wear-resistant layers.

4. The automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: The support (18) has a threaded hole, and the bottom of the tool holder (19) is provided with a connecting screw that is adapted to the threaded hole. The tool holder (19) is threadedly fixed to the support (18) by the connecting screw. The distance between adjacent tool holders (19) can be adjusted or disassembled.

5. An automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: The guide rail (21) is a rectangular guide rail, the inner wall of the slide groove (22) is provided with a lubrication layer, and the limiting plate (23) is fixedly connected to the guide rail (21) by adjusting bolts.

6. The automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: The number of take-up rollers (12) matches the number of cutter holders (19), and the outer surface of the take-up rollers (12) is provided with an elastic wrapping layer, which is made of silicone.

7. An automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: Both the driving pulley (15) and the driven pulley (16) are synchronous pulleys, and the belt (14) is a synchronous belt. The inner surface of the synchronous belt is provided with tooth grooves that are adapted to the teeth of the pulleys.

8. An automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: The unwinding seat (2) is provided with a bearing seat, and the rotating rod (3) is rotatably connected to the bearing seat through a deep groove ball bearing. The outer ring of the deep groove ball bearing is interference-fitted with the bearing seat, and the inner ring is interference-fitted with the rotating rod (3).

9. An automatic slitting and rewinding machine for plastic film according to claim 1, characterized in that: The support column (8) consists of two columns, which are symmetrically arranged on both sides of the base (1). The two ends of the top plate (9) are welded and fixed to the upper ends of the two support columns (8) respectively.

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