JPS59158745A - Hopper device - Google Patents

Abstract

PURPOSE:To obtain a proper pusher plate pressure at all times without being bothered by the kinds of filing card forms by blowing air in a manner to float the filing card from notched grooves of a hopper base for reducing the adhesiveness between the filing card and the hopper base. CONSTITUTION:Several notched grooves 8 are provided on the upper face of a hopper base 7 on which many filing cards 1 are loaded. Also, an air box 9 to be connected through to the notched grooves 8 is provided, and by sending air from a duct 10 connected to the air box 9, the air can be jetted from the notched grooves 8. Meanwhile, the end face of the filing cards 1 is brought into contact with a pusher plate 3, which is moved by the guide of a slide 11 to push the filing cards 1 at a fixed pressure with a spring 6 provided at its end. Above the filing cards 1, nozzles 4 and 5 are provided to blow air therefrom the riffle the filing cards 1. This construction permits to obtain a proper pressure of the pusher plate 3 at all times without being bothered by the kinds of filing cards 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a form feeding device, and particularly to a hopper device equipped with a mechanism for riffling forms using wind pressure.

[Technical background of the invention]

Traditionally this kind of hot '? -In the equipment, it is loaded on the hot spring.
The key to feeding performance is how well the documents are riffled.

FIG. 1 is a configuration diagram showing an example of a conventional hopper device. A large number of forms 1 are pressed by a hexhear grating 3 on the feed belt 2 side.

Nozzles 4 and 5 are arranged near the feed belt 2 side of the form 1, and the air jetted from these nozzles riffles the form 1 near the feeding section entrance. A spring 6 is attached to the grip shear plate 3, and the elastic force of the spring 6 urges the grip shear plate 3 in the direction of feed bell)2*lJ.

Here, regarding the pressure applied to the form 1 by the grip shear plate 3, at the position a in the figure, the minimum pressure that does not cause the form 1 to topple is sufficient, and at the position a in the figure, the pressure applied to the form 1 is the minimum pressure that will not cause the form 1 to fall. Pressure is required to resist the weight and frictional force of the form 1 being held. Therefore, the suppressing force of the squeezer grating 3 against the form 1 must be set by selecting the elastic coefficient of the spring 6 or the like so that a predetermined pressure can be obtained at each position of the form 1.

[Problems with background technology]

However, due to the presence or absence of perforations in the form L and the difference in the friction coefficient ↓), it is very difficult to set the appropriate pressure to the pusher plate 3, and if the pressure is too strong, the riffle function will not work properly. If it was too weak, it would not be able to push the form 1 all the way, resulting in a feeding error.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, it is an object of the present invention to provide a screwdriver/master device that can always obtain a suitable gulp-shaft pressure without being affected by the type of document.

[Summary of the invention]

The present invention provides a popper device equipped with a mechanism for pressing the forms loaded on a hopper base with a gutsher grate and riffling a portion of the forms, in which a plurality of notched grooves are formed on the pace surface on which the forms are loaded. By blowing air into the notch groove of the paper, a force is applied to the form stacked on the pace in the direction of lifting it upwards, reducing the adhesion between the form and the pace and reducing the number of types of forms. The above object is achieved by adopting a configuration in which coefficients of friction, weight per plate, etc. having different values have almost no influence on pusher plate pressure.

[Embodiments of the invention]

An embodiment of the hopper device of the present invention will be described below with reference to the drawings, using the same reference numerals for the same parts as those of the conventional example.

FIG. 2 is a configuration diagram showing an embodiment of the hopper device of the present invention. A large number of forms 1 are loaded on a hopper page 7. Three notched grooves 8 are provided on the upper surface of this bopper pace 7, extending in the form stacking direction. Furthermore, an air box 9 is attached to the lower surface of the hopper pace 7 and communicates with the notched groove 8. When air is sent from the duct 10 connected to the air box 9 to the air box 9, (constituting means for blowing air), air is ejected from the notch groove 8.

The end face of the form 1 is brought into contact with a grit shearing plate 3, which is penetrated by a slide 11, and guided by this slide 11 so as to be movable in the form stacking direction. Further, a spring 6 is attached to the end of the squeezer plate 3, and due to the biasing force of the spring 6, the squeezer plate 3 presses the form 1 with a predetermined pressure. Further, a nozzle 4° 5 is installed above the form 1 near the entrance of the feeding section, and the form 1 is fed from the nozzles 4 and 5.
I'm blowing air on my hair to make Form 1- riffle.

That is, the nozzle 4 riffles the form 1, and the nozzle 5 prevents the form 1 from flying out.

Next, the operation of this embodiment will be explained. Due to the elastic force of the spring 6, the shear grating 3 applies a pressing force F to the form 1. This suppressing force F is F=
It acts as a minute pressure called Po, and at the position of the figure, F
It is sufficient if the pressure becomes =Po+μNw and acts. However, μ is the coefficient of friction, N is the number of forms, and W is the weight of one form.

By the way, when μNw always takes a constant value for various forms IK (considering the thickness of the form 1, in practice it is μW per unit distance), a spring 6 having a certain constant spring constant By setting the crushing rate pressure once to obtain the optimum pressing force using , the required performance can always be obtained.

However, in reality, as mentioned in the conventional example, form 1
0. There are variations in μ and W depending on the type of acetate, and the optimum pressure at the position of the seat in the figure differs. Therefore, it is extremely difficult to always set the optimal pressing force F for various forms 1.

Therefore, in this embodiment, from the notch groove 8 to the hopper pace 7,
Air is blown onto the forms 1 stacked on top to reduce the adhesion of these forms 1 to the hopper pace 7, thereby reducing the value of μNw. Then, the factor that determines the pressing force at the position of the chair in the figure is P. It is important that the majority of
For example, even if the μNw value varies among the 10 types of forms, the pressing force at the position indicated by the square in the figure remains approximately constant. Therefore, once the pressing force of the hopper grate 3 is set to an appropriate value, stable feeding and rinsing operations for the form 1 can always be obtained regardless of the type of form 1.

According to this embodiment, air is blown from the cutout groove 8 provided in the hopper pace 7 so as to lift the form so as to reduce the adhesion between the form 1 and the hopper pace 7.
By setting the pressure once, it is possible to always obtain the appropriate glucking rate pressure without being affected by the type of form 1. Therefore, good riffle can be achieved, and the hopper device can always operate stably without causing feeding errors.

In the above embodiment, the operation was described with the hopper 4'-pace 7 in a horizontal state, but the present invention can also be applied to an apparatus in which the hopper-pace is tilted by θ0 from the horizontal direction. In this case, if you set μ=-〇, theoretically μN
w becomes zero, but in reality there are variations in μ, μNw
Since this does not become zero, more stable form feeding performance can be obtained by blowing air from above the hopper base of the present invention.

〔Effect of the invention〕

As described above, according to the hopper device of the present invention, by blowing air from the hopper base surface onto the forms stacked thereon, the hopper device can
It has the effect of always obtaining the appropriate gutsher grade pressure.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of a conventional hopper device, and FIG. 2 is a block diagram showing an embodiment of the hopper device of the present invention. l...Form, 3...Pusher gray 1', 415
... Nozzle, 6... Spring, 7... Hopper pace, 8... Notch groove, 9... Air box, 10... Duct.

Claims (2)

[Claims] (1) A hora-9-pace for loading the forms, a feeding section for feeding and sending the sorted forms, a squeeze plate for pressing the forms against the feeding section, and a hole near the entrance of the feeding section. The hopper device is equipped with a nozzle for filling I-shaped forms, and is characterized by being provided with means for blowing air from the hollow/base surface to the form stacked thereon in a direction to float the form. Hola/arm device 0 (2) The hopper device according to claim 1, wherein at least one notch groove is provided on the hopper base surface, and means for feeding air is connected to the notch groove.