Rolling cutter mechanism

Abstract

A rolling cutter mechanism comprises a frame body, a pressing roller and a rolling cutting roller, the pressing roller and the rolling cutting roller are rotationally installed on the frame body, the pressing roller is arranged above the rolling cutting roller, a gap for a film to pass through is formed between the pressing roller and the rolling cutting roller, a cutter for cutting the film is arranged on the rolling cutting roller, and the cutter is spirally and obliquely arranged along the surface of the rolling cutting roller; when the hobbing cutter mechanism works, the pressing roller presses downwards to press the film, and when the hobbing roller drives the cutter to rotate to the first position, the cutter cuts the film. According to the hobbing cutter mechanism, the cutter is spirally and obliquely arranged along the surface of the hobbing roller, so that when the cutter cuts a film, collision between the cutter and the pressing roller can be greatly reduced, collision impact on the cutter is greatly reduced, abrasion of the cutter is greatly reduced, the service life of the cutter is prolonged, the cutter does not need to be frequently replaced, and the production cost is reduced. And in addition, the cutting force of the cutter can be improved, the cutting effect is improved, and then the quality of the thin film is improved.

Description

Technical Field

[0001] This invention relates to the field of packaging machine technology, and in particular to a rotary cutting mechanism. Background Technology

[0002] Packaging machines using roll film require film cutting during packaging. The production line includes a roller cutter mechanism, which comprises a frame, pressure rollers, and a cutting roller. The cutting roller has a cutter for cutting the film, and a gap exists between the pressure roller and the cutting roller for film passage. During cutting, the cutting roller drives the cutter to rotate, the pressure roller presses down on the film, and the cutter cuts the film when it rotates to the gap position. However, the cutter is prone to colliding with the pressure roller during film cutting, and the cutter is easily worn down by the impact. Once the cutter wears down to a certain extent, it needs to be replaced, resulting in a relatively short lifespan and frequent cutter replacements, which affects production efficiency.

[0003] Therefore, further improvements are necessary. Summary of the Invention

[0004] The purpose of this invention is to provide a rolling cutter mechanism that is simple in structure, has a long service life, high production efficiency, good product quality, and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A rotary cutter mechanism designed for this purpose includes a frame, characterized in that it further includes a pressure roller and a rotary cutting roller, which are rotatably mounted on the frame. The pressure roller is positioned above the rotary cutting roller, and a gap for film passage is provided between the pressure roller and the rotary cutting roller. A cutter for cutting the film is provided on the rotary cutting roller, and the cutter is spirally inclined along the surface of the rotary cutting roller. When the rotary cutter mechanism is working, the pressure roller presses down to hold the film, and when the rotary cutting roller drives the cutter to rotate to the first position, the cutter cuts the film.

[0006] The slitting roller is provided with an installation groove, which is spirally inclined along the surface of the slitting roller, and the cutter is fitted and installed in the installation groove.

[0007] The cutter has a first spiral inclined surface on each side, and the mounting groove has a second spiral inclined surface on each side, with the first spiral inclined surface and the corresponding second spiral inclined surface fitting together.

[0008] The cutters are positioned on opposite sides of the cutting roller.

[0009] The cutter is equipped with a blade for cutting the film, which protrudes outside the mounting groove.

[0010] The cutter has a first fixing hole, and the mounting slot has a second fixing hole. The fastener passes through the first fixing hole and is then fastened to the second fixing hole to fix the cutter in the mounting slot.

[0011] It also includes a pressing device, which includes a driving component and a pressing component. The driving component drives the pressing component, and the pressure roller is located below the pressing component. The driving component drives the pressing component to move downward so that the pressing component presses down the pressure roller.

[0012] The pressing assembly includes a pressure plate, a mounting frame, and a pressure roller. The drive assembly drives the pressure plate, the mounting frame is fixed on the pressure plate, and the pressure roller is rotated and mounted on the mounting frame. The pressing assembly presses down the pressure roller through the pressure roller, and the pressure roller and the pressure roller make rolling contact.

[0013] The drive assembly includes a hydraulic cylinder and a push rod. The hydraulic cylinder drives the push rod, which is connected to the pressure plate. The hydraulic cylinder drives the pressure plate to move up and down through the push rod, which in turn drives the pressure roller to move up and down. When the pressure roller moves downward, it presses down the pressure roller.

[0014] The frame is equipped with a drive device, which includes a motor and a coupling. The two ends of the cutting roller are respectively provided with connecting shafts. The output shaft of the motor is connected to the coupling, and the coupling is connected to the connecting shaft.

[0015] The rotary cutter mechanism of the present invention arranges the cutter spirally inclined along the surface of the rotary cutter roller. This greatly reduces the collision between the cutter and the pressure roller when cutting the film, thereby greatly reducing the impact on the cutter, significantly reducing cutter wear, increasing cutter life, and eliminating the need for frequent cutter replacements, thus improving production efficiency. In addition, it can also increase the cutting force of the cutter, improve the cutting effect, and thus improve the quality of the film. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the rolling cutter mechanism in one embodiment of the present invention.

[0017] Figure 2 This is an exploded view of the cutting roller and cutter in one embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the overall structure of the pressing device in one embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the assembly structure of the cutting roller and the cutter in one embodiment of the present invention.

[0020] Figure 5 This is an exploded view of the cutting roller and cutter from another position in one embodiment of the present invention.

[0021] Figure 6 This is an exploded cross-sectional view of the cutting roller and the cutter in one embodiment of the present invention.

[0022] Figure 7 This is a partial structural cross-sectional view of the rolling cutter mechanism in one embodiment of the present invention. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See Figures 1-7 This rotary cutting mechanism, applied in a packaging machine production line, includes a frame 1, a pressure roller 2, and a rotary cutting roller 3. The pressure roller 2 and the rotary cutting roller 3 are rotatably mounted on the frame 1. The pressure roller 2 is positioned above the rotary cutting roller 3, and a gap is provided between the pressure roller 2 and the rotary cutting roller 3 for film passage. When the rotary cutting roller 3 rotates, it cooperates with the pressure roller 2 to convey the film. A cutter 4 for cutting the film is provided on the rotary cutting roller 3, and the cutter 4 is spirally inclined along the surface of the rotary cutting roller 3. When the rotary cutting mechanism is working, the pressure roller 2 presses down to hold the film, and when the rotary cutting roller 3 drives the cutter 4 to rotate to the first position A, the cutter 4 cuts the film. The first position A is the position above the rotary cutting roller 3, that is, the gap position between the pressure roller 2 and the rotary cutting roller 3.

[0025] The slitting roller 3 is provided with a mounting groove 5, which is spirally inclined along the surface of the slitting roller 3. The cutter 4 is attached to the mounting groove 5 so that the cutter 4 is spirally inclined along the surface of the slitting roller 3, so that the cutter 4 cuts the film in a scissor-like manner, which can greatly reduce the collision between the cutter 4 and the pressure roller 2, thereby greatly reducing the impact of the collision on the cutter 4.

[0026] The cutter 4 has a first spiral inclined surface 6 on each side, and the mounting groove 5 has a second spiral inclined surface 7 on each side. The first spiral inclined surface 6 and the corresponding second spiral inclined surface 7 fit together so that the cutter 4 is positioned on the mounting groove 5.

[0027] The cutters 4 are respectively set on opposite sides of the cutting roller 3. Correspondingly, the mounting grooves 5 are respectively set on opposite sides of the cutting roller 3. The two cutters 4 can improve the cutting efficiency of the film.

[0028] The cutter 4 is provided with a blade 8 for cutting the film. The blade 8 protrudes outside the mounting groove 5 to ensure that the blade 8 can cut the film. The blade 8 is located in the middle of the cutter 4.

[0029] The cutter 4 is provided with a first fixing hole 9, and the mounting groove 5 is provided with a second fixing hole 10. The fastener (screw) passes through the first fixing hole 9 and is fastened to the second fixing hole 10 so that the cutter 4 is fixed on the mounting groove 5. The first fixing hole 9 is linearly distributed on the cutter 4 along the length direction of the cutter 4, and the second fixing hole 10 is linearly distributed at the bottom of the mounting groove 5 along the length direction of the mounting groove 5.

[0030] The cutter 4 is installed as a single unit, meaning it is mounted on the mounting slot 5 as a single piece; alternatively, the cutter 4 can be divided into two parts, with both parts mounted on the same mounting slot 5 and close together. Figure 4 As shown.

[0031] It also includes a pressing device 11, which includes a driving component and a pressing component. The driving component drives the pressing component, and the pressure roller 2 is located below the pressing component. The driving component drives the pressing component to move downward so that the pressing component presses down the pressure roller 2.

[0032] The pressing assembly includes a pressure plate 12, a mounting frame 13, and a pressure roller 14. The driving assembly drives and connects to the pressure plate 12. The mounting frame 13 is fixed on the pressure plate 12. The pressure roller 14 is rotatably mounted on the mounting frame 13. The pressing assembly presses down the pressure roller 2 through the pressure roller 14, and the pressure roller 14 makes rolling contact with the pressure roller 2 to ensure that the pressure roller 2 rotates smoothly when the film is cut. A rotating shaft 20 is provided on the pressure roller 14, and a rotating hole is provided on the mounting frame 13. The rotating shaft 20 is rotatably engaged with the rotating hole.

[0033] The drive assembly includes a hydraulic cylinder 15 and a push rod 16. The hydraulic cylinder 15 drives the push rod 16, which is connected to the pressure plate 12. The hydraulic cylinder 15 drives the pressure plate 12 to move up and down through the push rod 16, which in turn drives the pressure roller 14 to move up and down. When the pressure roller 14 moves downward, it presses down the pressure roller 2. The drive assembly is an electric hydraulic push rod or a manual hydraulic push rod. The manual hydraulic push rod also includes a handwheel, which is connected to the hydraulic cylinder 12. Turning the handwheel can drive the push rod 13 to move up and down through the hydraulic cylinder 12.

[0034] The pressure plate 12 is mounted on the frame 1 and moves up and down. The frame 1 is provided with a guide block 21. The push rod 16 passes through the guide block 21 and moves up and down along the guide block 21.

[0035] The frame 1 is equipped with a drive device, which includes a motor 17 and a coupling 18. The two ends of the cutting roller 3 are respectively provided with connecting shafts 19. The output shaft of the motor 17 is connected to the coupling 18, and the coupling 18 is connected to the connecting shaft 19. The motor 17 drives the cutting roller 3 to rotate through the coupling 18.

[0036] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rolling cutter mechanism, comprising a frame (1), characterized in that: It also includes a pressure roller (2) and a cutting roller (3). The pressure roller (2) and the cutting roller (3) are rotatably mounted on the frame (1). The pressure roller (2) is positioned above the cutting roller (3). A gap is provided between the pressure roller (2) and the cutting roller (3) for the film to pass through. A cutter (4) for cutting the film is provided on the cutting roller (3). The cutter (4) is spirally inclined along the surface of the cutting roller (3). When the cutting mechanism is working, the pressure roller (2) presses down to hold the film. When the cutting roller (3) drives the cutter (4) to rotate to the first position (A), the cutter (4) cuts the film.

2. The rolling cutter mechanism according to claim 1, characterized in that: The roller (3) is provided with an installation groove (5), which is spirally inclined along the surface of the roller (3), and the cutter (4) is fitted and installed on the installation groove (5).

3. The rolling cutter mechanism according to claim 2, characterized in that: The cutter (4) has a first spiral inclined surface (6) on each side, and the mounting groove (5) has a second spiral inclined surface (7) on each side. The first spiral inclined surface (6) and the corresponding second spiral inclined surface (7) fit together.

4. The rolling cutter mechanism according to claim 2, characterized in that: The cutters (4) are respectively set on opposite sides of the rolling cutter (3).

5. The rolling cutter mechanism according to claim 2, characterized in that: The cutter (4) is provided with a blade (8) for cutting the film, and the blade (8) protrudes outside the mounting groove (5).

6. The rolling cutter mechanism according to claim 2, characterized in that: The cutter (4) is provided with a first fixing hole (9), and the mounting groove (5) is provided with a second fixing hole (10). After the fastener passes through the first fixing hole (9), it is fastened to the second fixing hole (10) so that the cutter (4) is fixed on the mounting groove (5).

7. The rolling cutter mechanism according to claim 1, characterized in that: It also includes a pressing device (11), which includes a driving component and a pressing component. The driving component drives the pressing component, and the pressure roller (2) is located below the pressing component. The driving component drives the pressing component to move downward so that the pressing component presses down the pressure roller (2).

8. The rolling cutter mechanism according to claim 7, characterized in that: The pressing assembly includes a pressure plate (12), a mounting bracket (13) and a pressure roller (14). The driving assembly drives the pressure plate (12), the mounting bracket (13) is fixed on the pressure plate (12), and the pressure roller (14) is rotatably mounted on the mounting bracket (13). The pressing assembly presses down the pressure roller (2) through the pressure roller (14), and the pressure roller (14) and the pressure roller (2) are in rolling contact.

9. The rolling cutter mechanism according to claim 8, characterized in that: The drive assembly includes a hydraulic cylinder (15) and a push rod (16). The hydraulic cylinder (15) drives the push rod (16), which is connected to the pressure plate (12). The hydraulic cylinder (15) drives the pressure plate (12) to move up and down through the push rod (16), which in turn drives the pressure roller (14) to move up and down. When the pressure roller (14) moves down, it presses down the pressure roller (2).

10. The rolling cutter mechanism according to claim 1, characterized in that: A drive device is provided on the frame (1). The drive device includes a motor (17) and a coupling (18). A connecting shaft (19) is provided at both ends of the rolling roller (3). The output shaft of the motor (17) is connected to the coupling (18), and the coupling (18) is connected to the connecting shaft (19).

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