Hobbing cutter cutting mechanism of paper bag machine

Abstract

The utility model relates to a cutting mechanism of a paper bag machine, in particular to a hobbing cutter cutting mechanism of the paper bag machine, which comprises an upper cutting roller which is rotatably arranged, a lower pressing cutter is arranged on the upper cutting roller, the hobbing cutter cutting mechanism of the paper bag machine further comprises a lower cutting roller which is arranged below the upper cutting roller, the lower cutting roller is rotatably arranged, an upper ejecting cutter is arranged on the lower cutting roller, and the upper ejecting cutter is arranged on the lower cutting roller. The rotating directions of the upper cutting roller and the lower cutting roller are opposite, the bottom end of the lower pressing knife is lower than the top end of the upper jacking knife during cutting, the upper jacking knife and the lower pressing knife are designed to be matched to complete paper bag cutting, and the paper bag cutting device can adapt to cutting of thick paper bags. The gap between the upper jacking cutter and the lower pressing cutter can be controlled through gear meshing, and fine adjustment can be conducted through the adjusting bolt.

Description

Technical Field

[0001] The utility model relates to a cutting mechanism for a paper bag machine, in particular to a rolling cutter cutting mechanism for a paper bag machine. Background Art

[0002] The Chinese utility model patent with publication number CN220198699U discloses a roller cutting mechanism for a paper bag machine, which is designed with a movable cutter and a fixed cutter. The movable cutter cooperates with the fixed cutter at a preset time interval and cuts the paper bag to obtain a specific length of the paper bag. At the moment when the movable cutter cuts the material, the blade of the movable cutter also turns away from the fixed cutter to form a passage for the subsequent continuous conveying of the material. However, for thick paper bags, the cutting force provided by the movable cutter is insufficient. Utility Model Content

[0003] In view of the technical problems existing in the background technology, the utility model aims to provide a rolling knife cutting mechanism for a paper bag machine, which is designed with an upper push knife and a lower pressure knife, and the two cooperate to complete the cutting of the paper bag.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solution: the roller cutting mechanism of the paper bag machine includes an upper cutting roller that is rotatably arranged, and a lower pressing knife is installed on the upper cutting roller, wherein the lower cutting roller is also arranged below the upper cutting roller, and the lower cutting roller is rotatably arranged, and an upper top knife is installed on the lower cutting roller. The upper cutting roller and the lower cutting roller rotate in opposite directions, and the bottom end of the lower pressing knife is lower than the top end of the upper top knife during cutting.

[0005] In this scheme, when cutting, the bottom end of the lower pressing knife exerts a downward force on the paper bag, and the top end of the upper pushing knife exerts an upward force on the paper bag. The smaller the gap between the lower pressing knife and the upper pushing knife, the greater the pressure per unit area of the paper bag. The cutting force is sufficient and can adapt to the cutting of thick paper bags. The bottom end of the lower pressing knife is lower than the top end of the upper pushing knife, the blades are staggered, and the wear is small.

[0006] Preferably, an upper gear is provided at one end of the upper cutting roller, and a lower gear is provided at a corresponding end of the lower cutting roller, and the upper gear is meshed with the lower gear.

[0007] In this solution, the upper and lower gears are meshed to make the upper and lower cutting rollers linked, so that the gap between the lower pressing knife and the upper top knife during cutting is controllable and appropriate.

[0008] Preferably, the lower pressing knife is slidably positioned and installed on the upper cutting roller, and the upper top knife is slidably positioned and installed on the lower cutting roller.

[0009] In this solution, the lower pressing knife and the upper pushing knife are slidably adjusted to fine-tune the gap between the lower pressing knife and the upper pushing knife to ensure the cutting force.

[0010] Preferably, the lower pressing knife and the upper pressing knife are both provided with clearance adjustment grooves, and positioning bolts are arranged in the clearance adjustment grooves.

[0011] In this solution, the positioning bolts can be loosened to adjust the lower pressing knife and the upper pressing knife. When the positioning bolts are tightened, the nuts of the positioning bolts can press the lower pressing knife and the upper pressing knife.

[0012] Preferably, the lower pressing knife is provided with a first adjusting bolt, the first adjusting bolt is in threaded connection with the upper cutting roller, the first adjusting bolt abuts against the lower pressing knife, the upper pressing knife is provided with a second adjusting bolt, the second adjusting bolt is in threaded connection with the lower cutting roller, the second adjusting bolt abuts against the upper pressing knife, and the cross sections of the lower pressing knife and the upper pressing knife are both right-angled trapezoids.

[0013] In this solution, turning the first adjusting bolt and the second adjusting bolt can push the lower pressing knife and the upper pressing knife to move. Since the cross sections of the lower pressing knife and the upper pressing knife are right-angled trapezoids, linearly adjusting the lower pressing knife and the upper pressing knife can effectively adjust the clearance size.

[0014] The beneficial effects of the present utility model are as follows: The upper pressing knife and the lower pressing knife are designed, and the two cooperate to complete the cutting of the paper bag, and can adapt to the cutting of thick paper bags; the clearance between the upper pressing knife and the lower pressing knife can be controlled by gear meshing, and fine adjustment can also be performed through the adjusting bolts. Therefore, the present utility model has substantial features and progress compared with the prior art. Description of the Drawings

[0015] The following describes the implementation manners of the present utility model, the relevant details and working principles of the embodiments with reference to the drawings.

[0016] Figure 1 It is a structural schematic diagram of the present utility model.

[0017] Figure 2 It is a sectional view of the present utility model.

[0018] Figure 3 It is Figure 2 The enlarged view of A in

[0019] In the figure: 1, upper cutting roller; 2, lower pressing knife; 4, lower cutting roller; 5, upper pressing knife; 6, upper gear; 7, lower gear; 8, clearance adjustment groove; 10, positioning bolt; 11, first adjusting bolt; 12, second adjusting bolt. Detailed Description of the Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the implementation manners of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0022] In the description of the present application, terms such as "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0023] See the attached Figures 1 - 3 , in the embodiment of this implementation manner, a hob cutting mechanism of a paper bag machine includes an upper cutting roller 1 rotatably arranged, and a lower pressing knife 2 is slidably and positioned on the upper cutting roller 1.

[0024] Among them, a lower cutting roller 4 is further arranged below the upper cutting roller 1, the lower cutting roller 4 is rotatably arranged, an upper pressing knife 5 is slidably and positioned on the lower cutting roller 4, the rotation directions of the upper cutting roller 1 and the lower cutting roller 4 are opposite, when cutting, the bottom end of the lower pressing knife 2 is lower than the top end of the upper pressing knife 5, an upper gear 6 is arranged at one end of the upper cutting roller 1, a lower gear 7 is arranged at the corresponding end of the lower cutting roller 4, and the upper gear 6 is meshed with the lower gear 7.

[0025] In this implementation manner, the other end of the lower cutting roller 4 is in transmission connection with a power source. During operation, due to gear meshing, the power source drives the upper cutting roller 1 and the lower cutting roller 4 to rotate synchronously and in opposite directions. When cutting, the bottom end of the lower pressing knife 2 applies a downward pressure to the paper bag, and the top end of the upper pressing knife 5 applies an upward pressing force to the paper bag. As long as the gap between the two is small enough, the pressure received by the paper bag per unit area is large enough and the cutting force is sufficient. Among them, the opposite rotation means that one cutting roller rotates clockwise and the other rotates counterclockwise. A clearance gear can also be arranged at one end of the upper cutting roller 1, and the clearance gear is also meshed with the lower gear 7, so that the meshing between the gears is closer. Adjust the clearance gear to keep the minimum gap when the gears engage, and slide and adjust the lower pressing knife 2 and the upper pressing knife 5, which can further finely adjust the gap to ensure the cutting force.

[0026] See the attached Figures 2 - 3Both the lower pressing knife 2 and the upper pressing knife 5 are provided with clearance adjustment grooves 8. Positioning bolts 10 are arranged in the clearance adjustment grooves 8. The lower pressing knife 2 is provided with a first adjustment bolt 11. The first adjustment bolt 11 is in threaded connection with the upper cutting roller 1. The first adjustment bolt 11 abuts against the lower pressing knife 2. The upper pressing knife 5 is provided with a second adjustment bolt 12. The second adjustment bolt 12 is in threaded connection with the lower cutting roller 4. The second adjustment bolt 12 abuts against the upper pressing knife 5. The cross-sections of both the lower pressing knife 2 and the upper pressing knife 5 are right trapezoids.

[0027] In this embodiment, when adjusting, loosen the positioning bolt 10, and rotate the first adjustment bolt 11 and the second adjustment screw to push the lower pressing knife 2 and the upper pressing knife 5 to move. After the adjustment is completed, tighten the positioning bolt 10.

[0028] In other alternative embodiments, a plurality of holes can be provided on the corresponding cutting roller for installing the corresponding tool to adjust the clearance.

[0029] The above is the preferred embodiment of the present invention. It should be noted that the protection scope of the present invention is not limited thereto. For those skilled in the art of this technology, without departing from the technical scope disclosed by the present invention under the premise of the same inventive concept, several improvements, refinements or equivalent replacements can also be made, which are also regarded as the protection scope of the present invention.

Claims

1. A hob cutting mechanism for a paper bag machine, comprising an upper cutting roller (1) rotatably arranged, and a lower pressing knife (2) is installed on the upper cutting roller (1), and it is characterized in that: It further includes a lower cutting roller (4) disposed below the upper cutting roller (1). The lower cutting roller (4) is rotatably arranged, and an upper pressing knife (5) is installed on the lower cutting roller (4). The rotation directions of the upper cutting roller (1) and the lower cutting roller (4) are opposite. During cutting, the bottom end of the lower pressing knife (2) is lower than the top end of the upper pressing knife (5).

2. The hob cutting mechanism of a paper bag machine according to claim 1, characterized in that: One end of the upper cutting roller (1) is provided with an upper gear (6), and a corresponding end of the lower cutting roller (4) is provided with a lower gear (7). The upper gear (6) meshes with the lower gear (7).

3. The hob cutting mechanism of a paper bag machine according to claim 1, characterized in that: The lower pressing knife (2) is slidably and positionally installed on the upper cutting roller (1), and the upper pressing knife (5) is slidably and positionally installed on the lower cutting roller (4).

4. The hob cutting mechanism of a paper bag machine according to claim 3, characterized in that: Both the lower pressing knife (2) and the upper pressing knife (5) are provided with clearance adjustment grooves (8), and positioning bolts (10) are arranged in the clearance adjustment grooves (8).

5. The hob cutting mechanism of a paper bag machine according to claim 4, characterized in that: The lower pressing knife (2) is provided with a first adjustment bolt (11). The first adjustment bolt (11) is threadedly connected to the upper cutting roller (1), and the first adjustment bolt (11) abuts against the lower pressing knife (2). The upper pressing knife (5) is provided with a second adjustment bolt (12). The second adjustment bolt (12) is threadedly connected to the lower cutting roller (4), and the second adjustment bolt (12) abuts against the upper pressing knife (5). The cross-sections of both the lower pressing knife (2) and the upper pressing knife (5) are right-angled trapezoids.

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