Side paper feeding apparatus for feeding raw side paper for paper cup manufacturing
A side paper feeding device includes a shuttle cam rotating in conjunction with a drive shaft and driving a shuttle plate. The device further includes a driving cam module, and a side paper transporting arm module. The shuttle cam, the driving cam module, and the side paper transporting arm module are operatively coupled to enable the shuttle plate to feed side paper to a paper cup forming device.
1. A side paper feeding device for feeding side paper to manufacture paper cups, comprising:
a shuttle cam rotating in conjunction with a drive shaft and driving a shuttle plate capable of transporting the side paper located on an upper part thereof to a paper cup forming device in a horizontal reciprocating direction;
a driving cam module, formed on a lower part of the shuttle cam, including a rotary cam, an oscillator cam and links arms, wherein the rotary cam formed on a rotation shaft fixedly coupled to the shuttle cam intermittently rotates a first turret, wherein the oscillator cam formed on the rotation shaft oscillates a second turret, and wherein the link arms whose respective one side ends are coupled to a first end of a first shaft of the first turret and to a first end of a second shaft of the second turret are rotatably coupled to each other at respective other side ends thereof; and
a side paper transporting arm module including an arm plate, rotating arms, sub-arms and a track cam, wherein the arm plate is coupled to one end of the first turret, wherein the rotating arms are rotatably coupled at equal intervals to an outer circumferential surface of the arm plate at respective one side ends thereof, wherein the sub-arms, where suction pads for holding and releasing the side paper by vacuum are formed, are fixedly coupled to respective other side ends of the rotating arms in a direction perpendicular to the rotating arms, and wherein the track cam coupled to a second end of the first shaft of the first turret allows the sub-arms to move reciprocally, on a plane of the outer circumferential surface of the arm plate, in a section between a first point where a specific suction pad among the suction pads holds the side paper from a magazine and a second point where the side paper is released on the upper part of the shuttle plate;
wherein, a groove, corresponding to a pitch curve, is formed on one side of a track cam plate of the track cam, and cam followers being engaged with the groove,
wherein the shuttle plate has a form of a fork in an area located on a moving path of the suction pads,
wherein the specific suction pad holding the side paper is moved linearly without rotation from a first point where the shuttle plate is positioned at a lower area of the specific suction pad to a second point where the specific suction pad is positioned at a lower part of the shuttle plate, wherein the specific suction pad is moved through the fork of the shuttle plate and stopped at the second point to thereby release the side paper on a side-paper-gripping part of the shuttle plate.
2. The side paper feeding device of claim 1 , wherein a body of the shuttle cam is formed in a shape of a plate, wherein a circumferential gear, for engaging a driving gear coupled to the drive shaft, is formed on an exterior circumferential side of the body, and wherein a plate-shaped cam is formed on the body.
3. The side paper feeding device of claim 1 , further comprising a lift, formed on a lower area of the driving cam module, for adjusting a position of the shuttle plate, corresponding to the paper cup forming device, by adjusting a vertical position and a horizontal position of the driving cam module.
4. The side paper feeding device of claim 1 , wherein a cam profile, for changing positions of cam followers formed on said other side ends of the rotating arms or on the sub-arms, is formed on an area of the track cam wherein the area of the track cam corresponds to the section where the specific suction pad holds and releases the side paper.