纸张调头机构

Abstract

本申请提供了一种纸张调头机构，包括承料台、带输送构件和限位构件；承料台上转动设置有搓纸轮，该搓纸轮传动连接有转动驱动构件；带输送构件倾斜设置在上层输送面和承料台之间，用于承接上层输送面输出的纸张，并带动纸张向承料台上移动；限位构件设置在带输送构件输送面朝向的一侧，用于配合带输送构件夹紧纸张，且具有沿带输送构件输送面移动的自由度，以避免撕扯纸张。在带输送构件和限位构件的协同作用下，纸张被送至搓纸轮处；随着搓纸轮反向旋转，可改变纸张移动方向，使纸张调头向下层输送面运动。本申请提供的纸张调头机构，通过带输送构件和限位构件的夹紧作用来控制纸张下落速度，以灵活控制其调头时机，确保调头过程的流畅性。

Claims

1. A paper reversing mechanism, characterized by, include: A material receiving platform is used to be arranged side by side on the outer side of the lower conveying surface; a paper-feeding roller is rotatably mounted on the material receiving platform, the rotation axis of which is parallel to the horizontal plane and perpendicular to the direction of the material receiving platform toward the lower conveying surface; the paper-feeding roller is driven by a rotation drive component for driving its forward and reverse rotation. A conveyor belt is inclinedly positioned between the upper conveyor surface and the receiving platform; the conveyor surface of the conveyor belt receives the paper output from the upper conveyor surface and contacts the back of the paper to move the paper onto the upper side of the receiving platform, and to bring the back of the paper into contact with the paper feed rollers; and A limiting member is disposed on the side facing the conveyor surface of the belt conveyor, for contacting the front of the paper to clamp the paper in coordination with the conveyor surface of the belt conveyor; and the limiting member has a degree of freedom to move along the conveyor surface of the belt conveyor at the point of contact with the paper. When the rotation drive member drives the paper feed roller to rotate forward or backward, the paper feed roller can drive the paper to leave the clamping space of the conveyor and the limiting member, or drive the paper to move to the lower conveyor surface.

2. The paper reversing mechanism of claim 1 wherein, The belt conveyor component includes: Two drive shafts are rotatably mounted above the material receiving platform and are parallel to the axial direction of the paper feeding rollers; one of the drive shafts is connected to a first rotating motor; and Multiple conveyor belts are all fitted around the outer periphery of the two drive shafts; The paper output from the upper conveyor surface can be connected to at least one of the conveyor belts to move downward with the conveyor belts.

3. The paper reversing mechanism of claim 2 wherein, The limiting component includes: Multiple parallel rotating rollers are rotatably mounted above the material receiving platform; one of the rotating rollers is connected to the drive shaft via a synchronous belt, so that the rotating roller rotates synchronously in the opposite direction with the drive shaft; and Multiple limiting bands are all sleeved on the outer periphery of the multiple rotating rollers; During the movement of the paper on the surface of the conveyor belt, at least one of the limiting belts can engage with the paper to cooperate with the conveyor belt to clamp the paper and allow the paper to move under the combined action of the limiting belt and the conveyor belt.

4. The paper reversing mechanism of claim 1 wherein, The material receiving platform is also equipped with a paper pressing roller; the paper pressing roller is rotatably arranged above the paper feeding roller and parallel to the paper feeding roller, so as to cooperate with the paper feeding roller to clamp the paper; The paper pressing roller is connected to the material receiving platform through an elastic pre-tightening structure, so that the paper pressing roller has an elastic degree of freedom to move closer to or away from the paper feeding roller.

5. The paper reversing mechanism of claim 4 wherein, The elastic preload structure includes: A positioning seat is fixedly mounted above the material receiving platform; a swing arm is hinged to the positioning seat, and the hinge axis of the swing arm is parallel to the axis of the paper pressing wheel, the paper pressing wheel being rotatably mounted at the swing end of the swing arm; and An elastic element is disposed between the positioning seat and the swing arm, with its two ends respectively connected to the positioning seat and the swing arm to form an elastic degree of freedom for the swing arm to swing relative to the positioning seat; When the elastic element drives the swing arm to swing, the elastic element returns to its original shape, and the pressure roller moves closer to the paper feed roller.

6. The paper reversing mechanism of claim 5 wherein, The positioning seat also has a stop arm; the stop arm is used to abut the end of the swing arm away from the pressure roller to limit the swing of the swing arm and limit the degree of the elastic element to recover its deformation, thereby forming the minimum paper passage gap between the pressure roller and the paper feed roller.

7. The paper reversing mechanism of claim 6 wherein, The positioning seat has a threaded hole; the axial direction of the threaded hole is parallel to the axial direction of the elastic element, and the stop arm adopts a screw structure that is threaded to the threaded hole; By rotating the stop arm, the stop arm can be moved closer to or further away from the swing arm to increase or decrease the minimum paper feed gap.

8. A paper reversing mechanism according to any one of claims 4-7, characterized in that The paper pressing rollers are multiple and arranged side by side in a horizontal direction; an installation beam is fixedly installed above the material receiving platform, and each paper pressing roller is connected to the installation beam through the elastic pre-tightening structure.

9. The paper reversing mechanism of claim 1 wherein, A monitoring component is also provided on the side of the conveying surface of the conveying component; the monitoring component is used to monitor the length of the paper passing through, so as to provide feedback to the rotation drive component on the timing of adjustment.

10. The paper reversing mechanism of claim 1 wherein, A recessed groove is provided on the upper side of the material receiving platform; the paper feeding roller is rotatably disposed in the recessed groove and partially extends to the upper side of the material receiving platform.

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