JPS6213249B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a form feeding mechanism that uses belts and rollers to suck in, discharge, and feed forms into new lines. Regarding the mechanism.

Conventionally, in this type of automatic form correction feeding mechanism, a belt or roller is separately provided in a direction perpendicular to the feeding direction of the form.
Just before or while sucking in the form, drive the belt or roller to press the form against the reference edge while correcting the direction of the form in the feeding direction, or simply change the mounting position of the belt or roller. The orientation of the form in relation to the feed direction was corrected by shifting it and suctioning it with one side of the belt or roller. For this reason, not only is it not possible to completely correct the orientation of the form, but the mechanism is complicated and costly, and it is not possible to miniaturize.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic document correction and feeding mechanism that can eliminate the above-mentioned drawbacks, reliably correct the orientation of a document in the feeding direction with a simple mechanism, and reduce the size and cost. It is in.

According to the present invention, in a form feeding mechanism that sucks in, discharges, and feeds forms with a new line using a belt or roller, one step motor serves as a driving source, a drive shaft connected to the step motor with a belt, two pulleys and gears each fixed to a drive shaft, two belts of different lengths mounted on these two pulleys, and two belts each having a different length;
two independent driven shafts connected and driven by two gears, two opposing pulleys fixed to each of these two driven shafts, and two opposing pulleys connected to the two opposing pulleys, respectively. two counter belts of different lengths mounted to correspond to the belt; a spring biased to press the two belts and the two counter belts; and a spring that guides the feeding of the form. Two rotatable steel balls are provided corresponding to the upper and lower guide plates, respectively, and are spaced from side to side in the direction in which the form is fed near the common edge of the upper and lower guide plates. and the long pair of belts and the short pair of belts are respectively set, and the two steel balls are respectively set at the end of the vertical guide plate on the side where the short pair of belts are set. This provides an automatic correction and feeding mechanism for forms.

Next, an embodiment of the automatic document correction and feeding mechanism according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the structure of an embodiment of the present invention. In this figure, belt 3
is applied to a pulley 2 fixed to a step motor 1 serving as a drive source and a pulley 5 fixed to a drive shaft 4. Furthermore, belts 7 of different lengths are attached to the two pulleys 6a and 6b fixed to the drive shaft 4.
8 are hung between idle pulleys 9a and 9b, respectively. Furthermore, 2 fixed to the drive shaft 4
The gears 10a and 10b are engaged with gears 13a and 13b (13a not shown) fixed to one ends of two independent driven shafts 11 and 12, respectively. At the other end of each of the driven shafts 11 and 12, there is a counter pulley 6' fixed to the drive shaft 4.
a and 6'b are fixed, and opposing belts 7' and 8' are respectively hung between the same idle pulleys 9'a and 9'b. Moreover, the two independent driven shafts 11 and 12 and the lower idle pulleys 9'a, 9'b are connected to the spring 15b via levers 14b, 14'b (14a, 14'a on one side are not shown). , 15'b, the upper belts 7, 8
is energized by This function is used to allow the belt to escape by an amount corresponding to the thickness of the inserted forms, which vary in thickness. Two steel balls 18 and 1 are installed on the upper and lower guide plates 16 and 17 that guide the feeding of the form.
8' is rotatably mounted. Note that 19 is a guide plate serving as a reference end, 20 is a side plate, and 21 is a form.

To explain the operation of the above mechanism, first,
When the step motor 1 serving as the driving source rotates in the forward or reverse direction, two sets of belts 7 and 8 having different lengths rotate via the belt 3 in the direction of suction, line feed, or discharge of the form. When the form 21 is properly set along the guide plate 19, which is the reference edge, the left end of the form 21 contacts the longer belt 7, but the right end is free, so the guide plate 19
When a certain amount is inhaled, it is also caught by the shorter belt 8 and inhaled by both belts. If the form 21 is set diagonally,
As seen by the two-dot chain line in the partial top view of FIG. 2, the left end of the form 21 contacts the longer belt 7, the right end contacts the steel balls 18, 18', but the shorter belt Do not come into contact with. Therefore,
When the step motor 1, which is the driving source, rotates, the belts 7 and 8 rotate, but since the form 21 is sucked in only by the longer belt 7 that is in contact with it, it is centered around the steel balls 18, 18'. The orientation is corrected by rotating it along the guide plate 19, which is the reference end. At the time when the orientation has been corrected, the form 21 is also held by the shorter belt 8, so that suction, ejection, and line feed are then carried out by the pairs of belts 7, 7' and 8, 8' on both sides. It is done. As seen in the partial side sectional view of FIG. 3, the steel balls 18, 18' are rotatable, and the upper steel ball 18 escapes upward when a certain amount of force is applied. Therefore, it is used only for correcting the orientation of the form 21, and does not have any adverse effect on the suction and ejection of the form.

As is clear from the above explanation, according to the present invention, when a form is set diagonally, one end of the form is held between the longer pair of belts, and the other end is brought into contact with two steel balls. As a result, the form rotates around the steel ball as the step motor rotates, and the feeding direction is corrected correctly, so there is no need to worry about orientation problems when setting the form, and the processing efficiency of the form is improved. Improvement can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the structure of an embodiment according to the present invention, FIG. 2 is a partial top view showing the set state of the form in FIG. 1, and FIG. 3 shows the set state of the form in FIG. 1. It is a partial side sectional view. In the figure, 1 is a step motor, 2 and 5 are pulleys,
3 is a belt, 4 is a drive shaft, 6a, 6b are pulleys,
6'a and 6'b are counter pulleys, 7 and 8 are belts,
7', 8' are opposing belts, 9a, 9b, 9'a,
9'b is an idle pulley, 10a, 10b, 13
a, 13b are gears, 11, 12 are driven shafts, 14
b, 14'b are levers, 15b, 15'b are springs, 16, 17 are guide plates, 18, 18' are steel balls, 19 is a guide plate, 20 is a side plate, and 21 is a form.

Claims (1)

[Claims] 1. In a form feeding mechanism that sucks in, discharges, and feeds forms by a belt or roller, there is one step motor as a driving source, a drive shaft connected to the step motor by a belt, and a drive shaft fixed to the drive shaft. two pulleys and gears, two belts of different lengths respectively mounted on these two pulleys, and two independent driven shafts connected to and driven by the two gears, respectively; two counter pulleys fixed to each of these two driven shafts, two counter belts of different lengths mounted on these two counter pulleys so as to correspond to the two belts, respectively; a spring biased to bring the two belts into pressure contact with the two opposing belts;
Two rotatable steel balls are provided correspondingly to upper and lower guide plates for guiding the feeding of the form, and a steel ball is provided near the common edge of the upper and lower guide plates in the direction of feeding of the form. The long pair of belts and the short pair of belts are respectively set at intervals on the left and right sides, and the two steel balls are placed at the end of the vertical guide plate on the side where the short pair of belts are set. An automatic correction feed mechanism for forms, which is characterized by the following settings.