Reverse bending device of paper cutter

Abstract

The utility model discloses a retroflexure device of a paper cutter, which is characterized by comprising a lifting seat connected with a corresponding lifting driving component and a swing frame, a first retroflexure winding roller and a second retroflexure winding roller are rotatably arranged on the swing frame, the swing frame and the first retroflexure winding roller are coaxially hinged on the lifting seat, and the second retroflexure winding roller is hinged on the lifting seat. The swing frame is connected with the swing adjusting assembly, a feeding roller is arranged at the feeding end of the swing frame, a pressing wheel base is arranged above the feeding roller correspondingly, a pressing wheel is arranged on the pressing wheel base, and paper is pressed between the feeding roller and the pressing wheel, penetrates through the second anti-bending winding roller and the first anti-bending winding roller and then sequentially winds around the second anti-bending winding roller and the first anti-bending winding roller. Compared with the prior art, the paper anti-bending device can provide different anti-bending acting forces so as to adapt to paper with different bending degrees, it is ensured that anti-bending flattening of the paper can be achieved, meanwhile, the number of the anti-bending rollers can be reduced, the structure is simpler, and the flexibility of operation and use is better.

Description

Technical Field

[0001] This utility model relates to paper cutting equipment, specifically to a recurved device for a paper cutter. Background Technology

[0002] A paper cutter is a specialized piece of equipment used for cutting paper. One type of paper cutter is used to cut rolls of paper. During operation, the roll of paper is unwound and fed to the cutting blade assembly for cutting. Since the paper curls to some extent after being rolled into a roll, a recurving device is usually installed to curl the paper in order to keep it flat and improve the cutting quality. Chinese patent document (Publication No.: CN 210456834 U; Publication Date: May 5, 2020) discloses a recurving mechanism for a paper roll slitting machine, including a support, a recurving component, and a paper guiding component. The support is fixedly connected to an external paper roll slitting machine. The recurving component is used to adjust the curling stress of individual sheets in the paper roll. The paper guiding component is used to guide the individual sheets in the paper roll. The recurving component includes three or more first rotating members, with adjacent first rotating members spaced apart, and each first rotating member is rotatably connected to the support. The paper guiding component includes two or more second rotating members, with adjacent second rotating members spaced apart, and each second rotating member is rotatably connected to the support. Each second rotating member is respectively located between two adjacent first rotating members. Individual sheets in the external paper roll sequentially pass around one first rotating member, one second rotating member, one first rotating member, one second rotating member, and one first rotating member.

[0003] The defects of the above structure are: 1. The positions of each rotating part are fixed, that is, the force of recurving is fixed. However, in actual use, the recurving force required for different types of paper or different degrees of curling is different, resulting in poor flexibility of use; 2. In order to achieve recurving, multiple sets of rotating parts are usually required for the paper to be wound, which makes the overall structure of the recurving device complex and requires a lot of layout space. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by this utility model is to provide a recurved device for a paper cutter to solve the above-mentioned problem.

[0005] Therefore, this utility model is implemented using the following solution:

[0006] A recurved device for a paper cutter, characterized in that: it includes a lifting base connected to a corresponding lifting drive assembly, and a swing frame on which a first recurved winding roller and a second recurved winding roller are rotatably mounted. The swing frame and the first recurved winding roller are coaxially hinged to the lifting base. The swing frame is connected to a swing adjustment assembly. A feeding roller is provided at the feeding end of the swing frame, and a pressure roller seat is provided above the feeding roller. A pressure roller is provided on the pressure roller seat. The paper is pressed between the feeding roller and the pressure roller, passes through, and then sequentially passes around the second recurved winding roller and the first recurved winding roller.

[0007] The lifting drive assembly includes a drive cylinder, and the piston rod of the drive cylinder is connected to the lifting seat.

[0008] The swing adjustment assembly includes an adjustment shaft rotatably mounted on a lifting seat, a worm gear connected to the adjustment shaft, the worm gear meshing with a worm wheel, the worm wheel being connected to a rotating sleeve, and the rotating sleeve being connected to a swing frame.

[0009] A spring is provided between the pressure roller seat and the swing frame, so that the pressure roller is elastically pressed against the feed roller.

[0010] The lifting platform is provided in two sets, one above the other.

[0011] The aforementioned technical solution provides a paper cutter reversing device that, by setting up a swing frame, can adjust the relative position between the first and second reversing rollers by controlling the swing of the swing frame, thereby adjusting the force applied to the paper for reversing. At the same time, by setting up a lifting seat, the lifting seat can drive the reversing rollers to repeatedly rise and fall, thereby achieving multiple reversing actions on the paper, ensuring that the paper can be reversibly flattened, and eliminating the need for an excessive number of reversing rollers, thus making the structure of the equipment simpler and the overall layout more compact. Attached Figure Description

[0012] The present invention includes the following figures:

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 A magnified view of the area pointed to by A in the middle;

[0015] Figure 3 This is a plan view of the present invention;

[0016] Figure 4 for Figure 3 A magnified view of the area pointed to by B. Detailed Implementation

[0017] As shown in the figure, the present invention discloses a recurved device for a paper cutter, including a lifting seat 10 connected to a corresponding lifting drive assembly, and a swing frame 2. A first recurved winding roller 6 and a second recurved winding roller 12 are rotatably mounted on the swing frame 2. The swing frame 2 and the first recurved winding roller 6 are coaxially hinged to the lifting seat 10. The swing frame 2 is connected to a swing adjustment assembly. A feeding roller 9 is provided at the feeding end of the swing frame 2. A pressure roller seat 7 is provided above the feeding roller 9. A pressure roller 8 is provided on the pressure roller seat 7. The paper is pressed between the feeding roller 9 and the pressure roller 8 and passes through and then sequentially passes around the second recurved winding roller 12 and the first recurved winding roller 6.

[0018] Furthermore, the lifting drive assembly includes a drive cylinder 11, the piston rod of which is connected to the lifting seat 10. By controlling the drive cylinder 11, the lifting seat 10 can be driven to perform lifting and lowering actions.

[0019] Furthermore, the swing adjustment assembly includes an adjustment shaft 5 rotatably mounted on the lifting seat 10. A worm gear 3 is connected to the adjustment shaft 5, and the worm gear 3 meshes with a worm wheel 4. The worm wheel 4 is connected to a rotating sleeve, which is connected to the swing frame 2. With the above structure, by controlling the rotation of the adjustment shaft 5 and transmitting power through the worm gear 3 and worm wheel 4, the swing frame 2 can be driven to swing, thereby adjusting the position of the second anti-curve winding roller 12 and realizing the adjustment of the anti-curve force.

[0020] Furthermore, a spring is provided between the pressure roller seat 7 and the swing frame 2, so that the pressure roller 8 is elastically pressed against the feed roller 9. This structure can accommodate papers of different thicknesses, ensuring that the pressure roller 8 and the feed roller 9 can work together to flatten the paper and avoid wrinkles.

[0021] Furthermore, the lifting seats 10 are arranged in two sets, one above the other. By adopting this structure, the structure of the two unwinding seats 1 can be correspondingly set, further improving the convenience of paper roll changing.

[0022] The working principle of this utility model is as follows: The paper is first unwound by the unwinding seat 1 and passes between the pressure roller 8 and the feed roller 9 to flatten the paper and prevent wrinkles. Then the paper passes around the second anti-curve winding roller 12 and the first anti-curve winding roller 6 in sequence. At this time, the drive cylinder 11 is controlled to drive the lifting seat 10 to perform multiple reciprocating lifting and lowering, thereby realizing multiple anti-curve actions on the paper to ensure that the paper can be anti-curved and flattened. Then the paper is pulled to the subsequent trimming and cutting components for processing.

Claims

1. A recurving device for a paper cutter, characterized in that: The device comprises a lifting seat (10) connected with a corresponding lifting driving assembly, and a swing frame (2) provided with a first reverse winding roller (6) and a second reverse winding roller (12) in rotation, the swing frame (2) being coaxially hinged on the lifting seat (10) with the first reverse winding roller (6), the swing frame (2) being connected with a swing adjusting assembly, a feeding roller (9) being arranged at a feeding end of the swing frame (2), a pressure roller seat (7) being arranged above the feeding roller (9), a pressure roller (8) being arranged on the pressure roller seat (7), paper being pressed between the feeding roller (9) and the pressure roller (8) and then winding around the second reverse winding roller (12) and the first reverse winding roller (6) in sequence.

2. In a sheeter according to claim 1, the improvement wherein: The lifting driving assembly comprises a driving cylinder (11), a piston rod of the driving cylinder (11) being connected with the lifting seat (10).

3. A counter device for a paper cutter as defined in claim 1, wherein: The swing adjusting assembly comprises an adjusting shaft (5) arranged in rotation on the lifting seat (10), the adjusting shaft (5) being connected with a worm (3), the worm (3) being engaged with a worm wheel (4), the worm wheel (4) being connected with a rotating sleeve, the rotating sleeve being connected with the swing frame (2).

4. In a sheeter according to claim 1, the improvement wherein: A spring is arranged between the pressure roller seat (7) and the swing frame (2), so that the pressure roller (8) is elastically pressed on the feeding roller (9).

5. In a sheeter according to claim 1, the improvement wherein: Two groups of the lifting seat (10) are arranged in up and down.

Images