JPS6019079Y2 - Normal feed, reverse feed, exchangeable sheet feeding device - Google Patents

Description

[Detailed description of the invention] In order to prevent sheets that are easily curled during storage, especially papers, to prevent the warping of sheets, in particular paper, when storing sheets that are turned over and sheets that are not turned over alternately and stored, this The present invention relates to a normal feed, reverse feed, and exchange type sheet feeding device used in stacking operations.

Normally, paper has different surface properties on the front and back sides. For example, if cardboard with printing paper pasted on the front side is stacked face up, it will warp to the front side and become difficult to use during secondary processing. It will not be a defective product.

Therefore, in the past, this type of paper had to be stored by hand, turning each dozens of sheets upside down and stacking them.

It is an object of the present invention to provide a sheet feeding device that can freely change the front and back sides of sheets and stack them without requiring such troublesome manual work.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In Fig. 1, 1 is a normal feeding roll, which has a normal feeding course e on the top of the roll through which sheets fed from sheet feeding conveyor A pass, and a sheet discharge course d following both courses e. The normal feeding roll 1 is in rolling contact with the discharge course 2.

Reference numeral 3 denotes a turning roll, and a small gap S is placed between it and the normal feeding roll 1 at an upper level sufficient to allow the small roll 4 to be placed, and between it and the discharge course 2 to the extent that the lower part of the sheet turning chamber B can be placed. It will be established.

The small roll 4 rolls into contact with the turning roll 3 at the front position of the small gap S (the left side is referred to as front in FIG. 1) to form a turning course b, and rolls into contact with the discharge roll 2 to form a turning corner course. form C.

Each roll 1. 2. 3. 4 rotates at the same circumferential speed in the direction of the arrow, and as shown in FIG.
......, among which rolls 1, 2゜3
is forced to drive.

The turning chamber B has a plate-like gap between the upper crosspiece 5 and the bottom plate 6 for inserting the sheet, and is configured to escape obliquely upward with respect to the common tangent between the turning roll 3 and the small roll 4. The lower end of the upper crosspiece 5 is provided with a circumferential groove 3 of the reversing roll 3.
a, and the lower part of the bottom surface 6 enters the circumferential groove 2a of the discharge course 2 and runs along the tangent to the roll 2.

In this case, the lower part of the bottom surface 6 is curved to match the circumferential surface of the discharge roll 2, and the surface of the bottom surface 6, that is, the lower bottom surface of the turning chamber B, is slightly submerged from the circumferential surface of the roll, and the surface of the bottom surface 6 is turned over by the discharge roll 2. To facilitate the introduction of a sheet to a corner course d.

Numeral 7 is a stopper that adjusts the insertion depth of the sheet into the reversing chamber B. A bolt nut 8 with a washer is placed between the upper crosspiece 5 and the bottom surface 6, with a washer placed between the pillars. is fixed.

The sheet supply conveyor A consists of an upper belt 9 and a lower belt 10 provided on the same frame 11, and the facing portions of both belts move in the same direction at the same speed to form a sheet supply path a. .

The front end pulley 12 of the lower belt 10 is located at the front end of the crosspiece frame.
The shaft is pivotally connected to the entire device main body 13 as a fulcrum shaft 12a,
The inner side of the shaft 12a is connected to a vertical shift mechanism 14 made up of a hydraulic cylinder, and this mechanism connects the rear end of the sheet supply path a to the normal feeding course e and the turning course b alternately.

15 is a sheet discharge conveyor.

When using the above-mentioned device to change the sides of sheets and stack them, first turn them over using the vertical shift mechanism.
As shown in FIG. 1, the sheet supply conveyor A is positioned above.

In this way, when a sheet is fed through the opening 16 of the belt 9.10, the sheet passes through the sheet supply path a, enters the turning course b, hits the bottom of the turning chamber B obliquely, and starts from the leading edge of the sheet. It is inserted into B.

The stopper 7 is positioned so that the insertion of the sheet stops at the position where the rear end of the sheet comes off the circumferential surface of the small roll 4, so the rear end of the sheet bent along the turning roll 3 is turned over. After inserting the sheet into chamber B,
It bounces toward the discharge roll 2 side, follows the bottom surface of the turning chamber B, is pulled into the turning corner course C by the discharge roll 2 and the small roll 4, and then is sent to the discharge conveyor 15 through the discharge course d, and is then sent to a predetermined position. It is piled up on.

When the number of sheets turned over reaches a certain number, the vertical shift mechanism 14
Then lower the sheet supply conveyor A.

By doing this, the sheet supply path a is changed to the normal feeding course e.
Therefore, the sheet passes from the normal feeding course e to the discharge course d, with the upper surface as it is when inserted into the conveyor A facing up, and is stacked by the discharge conveyor 15 on top of the sheet that has been turned over as described above.

By repeating the above operations, a predetermined number of sheets can be stacked by exchanging the front and back sides.

Incidentally, photoelectric detectors 17 and 18 may be provided in each of the reversing course b and the normal feeding course e, and the sheet passing signal may be counted by a counter, and this signal may be used to control the vertical movement of the vertical shift mechanism. .

The present invention is as described above, and by shifting the sheet supply conveyor using the vertical shift mechanism, it is possible to freely select either the courses at b, c, and d, in which the sheets are turned over, or the courses e, d, in which the sheets are normally fed without turning them over. By doing so, it is possible to efficiently exchange the front and back sides of the sheets and stack them without manual work, and to prevent the sheets from warping and store them.

[Brief explanation of the drawing]

Figure 1 is a side view of one embodiment of the present invention, Figure 2 is the same
- It is an X-ray sectional view. In the figure, A...Sheet supply conveyor, B----
--Sheet reversing chamber, S...Small gap, a...
...Sheet supply path, b...Flip course, C
...Flip corner course, d...Discharge course, e...Normal feed course, 1...
Normal feeding roll, 2...Discharge roll, 3...
...Roll for turning over, 4...Small roll, 5
... Upper crosspiece, 6 ... Lower crosspiece, 7...
... Stopper, 9 ... Upper belt, 10.
...Lower belt, 11...Machine frame, 12a
......Fully shaft, 13...All device main bodies, 1
4... Vertical shift mechanism, 15... Discharge conveyor.

Claims (1)

[Scope of utility model registration request] The normal feed roll and the discharge course are brought into contact so that the normal feed course e on the upper part of the normal feed roll is followed by the discharge course d, and the normal feed roll and the discharge course are placed in contact with each other at a small distance S from the discharge course and are turned over above the normal feed roll. A roll is provided, and the small roll is rolled into contact with the turning roll at a position in front of the small interval to form a turning course b toward the small interval S, and the small roll is rolled into contact with the discharge course to connect to the discharge course d. A sheet-flipping corner course C is formed, and a sheet-flipping chamber is provided with a plate-like gap extending rearward after the small interval, and the sheet-flipping chamber can receive the sheet steered from the flipping course B diagonally at a constant source. The lower end of the bottom of the turning chamber is arranged along the tangential direction of the discharge roll, and a sheet supply conveyor is provided in front of the normal feed roll and the turning feed roll, and the front end of the machine frame of the conveyor is arranged so that the front end of the machine frame of the conveyor is connected to the main body of the entire apparatus. The conveyor is connected to the up-and-down shift mechanism at the inner side of the pivot shaft, and when the conveyor is shifted upward, it turns over and moves to course B.
A normal feed reverse feed exchange type sheet feeding device connected to the -downward shifted position and connected to the normal feeding course e.