JPH0430206Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Field of industrial application This invention is a continuous conveying strip material (for convenience) used in the coating process of coated paper in paper manufacturing or in printing, when painting or printing on both sides of paper. This invention relates to a device for reversing the front and back sides of paper (hereinafter referred to as band paper).

B. Conventional technology When printing or painting on both sides of coated paper, one printing machine or coating machine prints on one side of the paper,
After painting, the paper is turned over and passed through another printing machine, coating machine, etc. These printing or painting process devices have many rollers arranged between the base paper supply roll and the final take-up roll, so in order to pass the beginning of the base paper between these rollers, An endless tape is provided that runs along the edge, and a paper threading rope led out from the leading edge of the paper or the cut end of the paper is tied to this endless paper threading tape, and the leading edge of the paper is pulled by the endless paper threading rope. It is designed to guide the tension rollers.

By the way, in the above-mentioned front-back reversing device, the base paper is rotated against the running direction arrow of the base paper as shown in Figure 3.
Two stages of upper and lower turn bars B1 and B2 that are perpendicular to each other in the direction of 45 degrees and a turn bar B3 for turning 180 degrees parallel to the running direction are crossed in the order of B1, B3, and B2, and the running direction between them is 90 degrees and 180 degrees. Since it is difficult to automatically pass the leading edge of the original paper through this front-back reversing device, the paper passing tape is divided into two parts before and after the front-back reversing device: a front paper passing tape T1 and a rear tape T2. Each tape was run independently as an endless tape, and the leading edge of the original paper was transported by hand at the front-back reversing device.

C. Problems to be solved by the invention The work of manually passing the leading edge of the original paper through the front-to-back reversing device requires caution, and is dangerous because the front-to-back reversing device is located at a location higher than the floor and the footing is poor. It is. The present invention attempts to automate such difficult work.

D. Means for solving the problem As shown in Fig. 1, an endless tape (paper passing tape) T, which is installed so as to be able to run along this side of the continuously conveyed band P, is placed in a front-back reversing device. At this point, the paper passes through one end of the first turn bar together with the transport band, moves straight for a short distance, then turns toward the opposite end of the first turn bar, and crosses the other end of the first turn bar together with the transport band for a 180° turn. Wind it around the turn bar B3 in the same direction as the transfer band P.
The paper was turned 180° to come to this side of the front/back reversing device, and the second turn bar B2 was turned in the same direction as the transfer paper P to run the side of the transfer paper P toward the take-up roll of the transfer paper. .

E. Effect When the paper passing tape is run along the side of the operation side of all the devices from the supply roll to the take-up roll of the paper transfer band, after passing through the front-side reversing device, the paper transport band is turned inside out. Accordingly, the paper tape also moves to the side opposite to the operation side of all the devices (the drive side where the motor etc. are located), which causes operational inconvenience, but in this invention, as mentioned above, the paper tape is moved to the side opposite to the operation side of the device (the drive side where the motor etc. At the turn bar in the ° direction, the paper straddles the transfer band and moves to the opposite side of the paper, so even after passing the face-to-face reversing device, it continues to run on the operation side of all the devices, which causes operational inconvenience. The paper passing tape can be run consistently from the paper supply roll to the take-up roll without any problems.

Embodiment FIG. 1 shows an embodiment of the present invention. B1 is the first
The turn bar is tilted at 45 degrees with respect to the direction of movement of the base paper P, which advances from the right side in the figure, and the base paper is wound around this turn bar B1 from bottom to top, and the direction of movement of the base paper is
The turned base paper P is turned 90°, and is wound from bottom to top on the side turn bar B3 for 180° turning, which is perpendicular to it, and turned 180°.
The second turn bar B2, which is located above the turn bar B1 and perpendicular to B1, is wound from bottom to top, turned 90 degrees, and sent in the same direction as before.

T is a paper passing tape, and the first tape is placed next to the base paper P.
Pass under turn bar B1 of
The base paper is turned 90 degrees, wound around the turn bar B3 from bottom to top, turned 180 degrees, turned around the end of the second turn bar B2 from bottom to top, turned 90 degrees, and leaves the front-side reversing device. It travels parallel to the side, and although it is shortened in the figure, at the take-up roll of the base paper that has passed through the back coating machine, dryer, etc., it reverses as shown in the figure and returns to the base paper supply side. go.

In this embodiment, the deflection pulley L is tilted slightly away from the vertical in the figure, and the deflected tape T moves away from the pulley slightly upward from horizontal and passes over the first turn bar B1. When first passing the leading edge of the raw paper, a paper passing rope led out from the center of the leading edge of the raw paper is tied to an appropriate location on an endless paper passing tape T driven in synchronization with the raw paper. Since the paper passing tape passes between the rollers of all devices such as the coating machine and the dryer, the leading edge of the base paper is guided by the paper passing tape and passes between each roller. The paper passing tape is not immediately turned 90 degrees at the point where it hooks on the first turn bar B1, but is turned toward the side turn bar B3 after traveling straight ahead by the width of the conveying band. When the paper passing tape is turned around at the hook of the first turn bar B1, when the paper passing rope joining point of the paper passing tape reaches the hook of the first turn bar, the center of the leading edge of the transport band is no longer hooked to the first turn bar. Therefore, the transfer band is pulled straight until the center of the leading edge of the transfer band hangs over the first turn bar. Thereafter, the paper passing tape guides the transfer band toward the side turn bar B3, turns the side turn bar B3, returns to this side again, and pulls the leading edge of the transfer band to the hook of the second turn bar B2. Then, it is turned by 90 degrees by the second turn bar B2 together with the conveying band,
In Figure 1, pull the transport strip to the left.

The leading center of the transport band is connected to the paper passing tape by a paper passing rope, but in the case of this invention, the paper passing tape is moved from one side edge to the opposite side edge with respect to the transport band paper before and after it is turned over. Therefore, if you connect the first side of the transport band near the paper passing tape to the paper passing tape before turning the front and back sides, the connection point of the paper transport band to the paper passing tape will be significantly farther away from the paper passing tape after the front side is reversed. It becomes difficult for the paper tape to properly guide the transport band. If the leading center of the transport band is connected to the paper passing tape, the distance between the leading center of the transport band and the connecting point of the paper passing tape does not change before and after the front-back reversal, so there is no strain in guiding the transport band. At the front/back reversing device, the paper passing tape temporarily leaves the side of the base paper, but since the passing distance of the paper passing tape T is longer than the distance that the leading center of the base paper passes through the front/back flipping device, the tape T There is no need to worry about the paper passing rope that connects the leading edge of the base paper becoming slack and applying tension to the base paper, causing it to break, and the paper passing tape T continues to run while the leading edge of the base paper passes through the front-back reversing device. By repeatedly stopping the drive and slowing down the advance of the original paper compared to the paper passing tape, the paper can be guided by the paper passing tape and passed through the front-back reversing device with the leading edge of the original paper.

In this embodiment, the paper-passing turning pulley L is one pulley whose axis is slightly tilted, but this is so that no force is applied to the paper-passing tape, and the paper-passing rope does not wrap around the pulley, making it easier to separate from the pulley.

As the turning pulley, two pulleys L1 and L2 as shown in FIG. 2 with their axes orthogonal to each other may be used.

G. Effects According to the present invention, the paper passing tape can be passed all the way from the base paper supply roll to the take-up roll, and the paper passing tape can also be used to pass the base paper through the face-to-face reversing device. There is no need to reconnect the leading edge of the paper and the paper passing tape at the front and back, and the difficult work of manually passing the paper through the front-back reversing device is also eliminated, improving safety.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention, FIG. 2 is a perspective view of another embodiment of the turning pulley, and FIG. 3 is a perspective view of a conventional front-back reversing device.

Claims (1)

[Scope of utility model registration request] The center of the leading edge of the transfer band is connected with a rope to an endless paper passing tape that runs along the edge of the transfer band along the side of all the devices including the front-back reversing device from the supply roll of the transfer band to the take-up roll. In the automatic paper passing device that pulls and guides the paper from the start end to the end of the above device using a paper passing tape, the above-mentioned front-side reversing device is used to flip the transport band paper in a straight line in one direction and pass it. driving direction and
first and second turn bars arranged at an angle of 45° to form an X-shape; and a conveying band running on the side of the first and second turn bars on the opposite side to the paper passing tape. and a side turn bar for 180° turning with their axes parallel to each other, and the paper passing tape is not turned immediately at the point where it hooks onto the first turn bar, but is made to move straight as it is, until it reaches the width of the conveying band. the second turn bar at the end of the second turn bar farther from the side turn bar; An automatic paper passing device characterized in that the automatic paper passing device is made to run by means of guiding means to turn the paper transfer band 90° in the transfer direction at the point where it hooks onto a turn bar.