A reversible paper cutter

Abstract

The utility model discloses a kind of reversible paper cutter, it is related to printer paper cutting technical field, including mounting bracket, the upper end transverse of mounting bracket is equipped with cutting platform, the upper end one side of mounting bracket is equipped with the knife rest that can be moved along cutting platform transverse reciprocating, two limiting hooks for locking main shaft are rotatably arranged on the side wall of the two sides of adjusting hole;When the knife rest moves from one end of cutting platform to the other end, it will enter the guide gap of another guide seat from the guide gap of one guide seat, while entering the guide gap, the guide inclined plane can open one limiting hook, and the limiting boss is used to push the main shaft of blade to switch from one limiting hook to another limiting hook.The utility model blade is from left to right or from right to left, and it is one-time cutting whole process when passing through cutting platform, improve paper cutting efficiency, and when cutting paper single time, the cutting path that blade can cut completely can completely cover the paper to be cut, ensure that cutting is completely cut single time.

Claims

1. A reversible paper cutter characterized in that, include: Mounting frame (1), the upper end of the mounting frame (1) is provided with a cutting platform (2) in the horizontal direction, and the upper end of the mounting frame (1) is provided with a knife holder (4) that can move back and forth in the horizontal direction along the cutting platform (2). The knife holder (4) is equipped with a spindle (44) that can switch positions in the horizontal direction, and the spindle (44) is fixedly sleeved with a blade (43) for cutting paper. The blade (43) is axially fixed with a spindle (44). The side wall of the tool holder (4) is provided with an adjustment hole. The end of the spindle (44) extends into the adjustment hole and slides into the adjustment hole. The side wall of the tool holder (4) is rotatably provided with two limiting hooks (42) located on both sides of the adjustment hole and used to lock the spindle (44). The mounting bracket (1) has guide seats (3) fixedly installed on both sides of the upper end. The guide seats (3) have guide notches. The guide notches have guide slopes (31) on the top side of the inner wall. The guide notches have limit bosses (32) extending laterally on both sides of the bottom side wall. When the blade holder (4) moves from one end of the cutting platform (2) to the other end, it will enter the guide notch of the other guide seat (3) through the guide notch of one guide seat (3). At the same time as entering the guide notch, the guide slope (31) can open one of the limiting hooks (42). The limiting boss (32) is used to push the spindle (44) of the blade (43) to switch from one of the limiting hooks (42) to the other limiting hook (42).

2. The reversible cross cutter of claim 1, wherein, The mounting frame (1) has pulleys (5) rotatably mounted at both ends of its sidewall, and a transmission belt (51) is wound between the two pulleys (5). The mounting frame (1) also has a motor fixed to provide power to one of the pulleys (5). The outer wall of the transmission belt (51) is provided with multiple protrusions. The bottom end face of the knife holder (4) extends downward with a linkage plate (411). The side wall of the linkage plate (411) is fixed with a transmission block (41). The transmission block (41) has a notch for the transmission belt (51) to pass through. The top wall of the notch is provided with multiple snap-fit ​​gaps. The protrusions snap into the snap-fit ​​gaps.

3. The reversible cross cutter of claim 1 wherein, The limiting hook (42) has an extension end at one end and a hook at the other end; The limiting hook (42) is rotatably connected to the side wall of the knife holder (4) at the position between the extension end and the hook. The inner side wall of the knife holder (4) is provided with a torsion spring (421). One end of the torsion spring (421) is fixedly inserted into the inner side wall of the knife holder (4), and the other end is fixedly inserted into the side wall of the hook. The end of the extension is provided with a rounded chamfer, which makes point contact with the guide slope (31), and the hook is used to hook the outer wall of the main shaft (44).

4. The reversible paper cutter according to claim 3, characterized in that, The angle between the extension end and the hook is 135°; The vertical distance between the axis of rotation of the limiting hook (42) and the knife holder (4) and the highest point of the circular chamfer is 7.76 mm; The angle between the guide ramp (31) and the inner top wall of the guide notch is 150°.

5. The reversible paper cutter according to claim 1, characterized in that, The blade (43) is also provided with an annular flange (431) on its axial sidewall. The annular flange (431) rolls and fits against the upper surface of the cutting platform (2) to roll and press the paper to prevent it from slipping, while providing cutting power for the blade (43) to rotate and cut the paper.

6. The reversible cross cutter of claim 5 wherein, The blade (43) is positioned opposite to the long sidewall edge of the cutting platform (2) for cutting paper.

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